source: asp3_tinet_ecnl_rx/trunk/curl-7.57.0/CHANGES@ 337

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                                  Changelog

Version 7.57.0 (29 Nov 2017)

Daniel Stenberg (29 Nov 2017)
- RELEASE-NOTES: curl 7.57.0

- THANKS: added contributors from 7.57.0 release

- openssl: fix boringssl build again
  
  commit d3ab7c5a21e broke the boringssl build since it doesn't have
  RSA_flags(), so we disable that code block for boringssl builds.
  
  Reported-by: W. Mark Kubacki
  Fixes #2117

- curl_ntlm_core.c: use the limits.h's SIZE_T_MAX if provided

- libcurl-share.3: the connection cache is shareable now

- global_init: ignore CURL_GLOBAL_SSL's absense
  
  This bit is no longer used. It is not clear what it meant for users to
  "init the TLS" in a world with different TLS backends and since the
  introduction of multissl, libcurl didn't properly work if inited without
  this bit set.
  
  Not a single user responded to the call for users of it:
  https://curl.haxx.se/mail/lib-2017-11/0072.html
  
  Reported-by: Evgeny Grin
  Assisted-by: Jay Satiro
  
  Fixes #2089
  Fixes #2083
  Closes #2107

- ntlm: avoid integer overflow for malloc size
  
  Reported-by: Alex Nichols
  Assisted-by: Kamil Dudka and Max Dymond
  
  CVE-2017-8816
  
  Bug: https://curl.haxx.se/docs/adv_2017-11e7.html

- wildcardmatch: fix heap buffer overflow in setcharset
  
  The code would previous read beyond the end of the pattern string if the
  match pattern ends with an open bracket when the default pattern
  matching function is used.
  
  Detected by OSS-Fuzz:
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4161
  
  CVE-2017-8817
  
  Bug: https://curl.haxx.se/docs/adv_2017-ae72.html

- [Jay Satiro brought this change]

  url: fix alignment of ssl_backend_data struct
  
  - Align the array of ssl_backend_data on a max 32 byte boundary.
  
  8 is likely to be ok but I went with 32 for posterity should one of
  the ssl_backend_data structs change to contain a larger sized variable
  in the future.
  
  Prior to this change (since dev 70f1db3, release 7.56) the connectdata
  structure was undersized by 4 bytes in 32-bit builds with ssl enabled
  because long long * was mistakenly used for alignment instead of
  long long, with the intention being an 8 byte boundary. Also long long
  may not be an available type.
  
  The undersized connectdata could lead to oob read/write past the end in
  what was expected to be the last 4 bytes of the connection's secondary
  socket https proxy ssl_backend_data struct (the secondary socket in a
  connection is used by ftp, others?).
  
  Closes https://github.com/curl/curl/issues/2093
  
  CVE-2017-8818
  
  Bug: https://curl.haxx.se/docs/adv_2017-af0a.html

- ssh: remove check for a NULL pointer (!)
  
  With this check present, scan-build warns that we might dereference this
  point in other places where it isn't first checked for NULL. Thus, if it
  *can* be NULL we have a problem on a few places. However, this pointer
  should not be possible to be NULL here so I remove the check and thus
  also three different scan-build warnings.
  
  Closes #2111

- [Matthew Kerwin brought this change]

  test: add test for bad UNC/SMB path in file: URL

- [Matthew Kerwin brought this change]

  test: add tests to ensure basic file: URLs

- [Matthew Kerwin brought this change]

  URL: update "file:" URL handling
  
  * LOTS of comment updates
  * explicit error for SMB shares (e.g. "file:////share/path/file")
  * more strict handling of authority (i.e. "//localhost/")
  * now accepts dodgy old "C:|" drive letters
  * more precise handling of drive letters in and out of Windows
    (especially recognising both "file:c:/" and "file:/c:/")
  
  Closes #2110

- metalink: fix memory-leak and NULL pointer dereference
  
  Reported by scan-build
  
  Closes #2109

- [Alessandro Ghedini brought this change]

  connect: add support for new TCP Fast Open API on Linux
  
  The new API added in Linux 4.11 only requires setting a socket option
  before connecting, without the whole sento() machinery.
  
  Notably, this makes it possible to use TFO with SSL connections on Linux
  as well, without the need to mess around with OpenSSL (or whatever other
  SSL library) internals.
  
  Closes #2056

- make: fix "make distclean"
  
  Fixes #2097
  Closes #2108

- RELEASE-NOTES: synced with 31f18d272

Jay Satiro (23 Nov 2017)
- connect: improve the bind error message
  
  eg consider a non-existent interface eth8, curl --interface eth8
  
  Before: curl: (45) Could not resolve host: eth8
  After: curl: (45) Couldn't bind to 'eth8'
  
  Bug: https://github.com/curl/curl/issues/2104
  Reported-by: Alfonso Martone

Daniel Stenberg (23 Nov 2017)
- examples/rtsp: clear RANGE again after use
  
  Fixes #2106
  Reported-by: youngchopin on github

- [Michael Kaufmann brought this change]

  test1264: verify URL with space in host name being rejected

- url: reject ASCII control characters and space in host names
  
  Host names like "127.0.0.1 moo" would otherwise be accepted by some
  getaddrinfo() implementations.
  
  Updated test 1034 and 1035 accordingly.
  
  Fixes #2073
  Closes #2092

- Curl_open: fix OOM return error correctly
  
  Closes #2098

- http2: fix "Value stored to 'end' is never read" scan-build error

- http2: fix "Value stored to 'hdbuf' is never read" scan-build error

- openssl: fix "Value stored to 'rc' is never read" scan-build error

- mime: fix "Value stored to 'sz' is never read" scan-build error

- Curl_llist_remove: fix potential NULL pointer deref
  
  Fixes a scan-build warning.

- ntlm: remove unnecessary NULL-check to please scan-build

- BUGS: spellchecked

Jay Satiro (18 Nov 2017)
- [fmmedeiros brought this change]

  examples/curlx: Fix code style
  
  - Add braces around multi-line if statement.
  
  Closes https://github.com/curl/curl/pull/2096

Daniel Stenberg (17 Nov 2017)
- resolve: allow IP address within [] brackets
  
  ... so that IPv6 addresses can be passed like they can for connect-to
  and how they're used in URLs.
  
  Added test 1324 to verify
  Reported-by: Alex Malinovich
  
  Fixes #2087
  Closes #2091

- [Pavol Markovic brought this change]

  macOS: Fix missing connectx function with Xcode version older than 9.0
  
  The previous fix https://github.com/curl/curl/pull/1788 worked just for
  Xcode 9. This commit extends the fix to older Xcode versions effectively
  by not using connectx function.
  
  Fixes https://github.com/curl/curl/issues/1330
  Fixes https://github.com/curl/curl/issues/2080
  Closes https://github.com/curl/curl/pull/1336
  Closes #2082

- [Dirk Feytons brought this change]

  openssl: fix too broad use of HAVE_OPAQUE_EVP_PKEY
  
  Fixes #2079
  Closes #2081

- TODO: ignore private IP addresses in PASV response
  
  Closes #1455

- RELEASE-NOTES: synced with ae7369b6d

Michael Kaufmann (14 Nov 2017)
- URL: return error on malformed URLs with junk after IPv6 bracket
  
  Follow-up to aadb7c7. Verified by new test 1263.
  
  Closes #2072

Daniel Stenberg (14 Nov 2017)
- INTERNALS: we may use libidn2 now, not libidn

Patrick Monnerat (13 Nov 2017)
- zlib/brotli: only include header files in modules needing them
  
  There is a conflict on symbol 'free_func' between openssl/crypto.h and
  zlib.h on AIX. This is an attempt to resolve it.
  
  Bug: https://curl.haxx.se/mail/lib-2017-11/0032.html
  Reported-By: Michael Felt

Daniel Stenberg (13 Nov 2017)
- SMB: fix uninitialized local variable
  
  Reported-by: Brian Carpenter

- [Orgad Shaneh brought this change]

  connect.c: remove executable bit on file
  
  Closes #2071

- [hsiao yi brought this change]

  README.md: fixed layout
  
  Closes #2069

- setopt: split out curl_easy_setopt() to its own file
  
  ... to make url.c smaller.
  
  Closes #1944

Jay Satiro (10 Nov 2017)
- [John Starks brought this change]

  cmake: Add missing setmode check
  
  Ensure HAVE_SETMODE is set to 1 on OSes that have setmode. Without this,
  curl will corrupt binary files when writing them to stdout on Windows.
  
  Closes https://github.com/curl/curl/pull/2067

Daniel Stenberg (10 Nov 2017)
- curl_share_setopt: va_end was not called if conncache errors
  
  CID 984459, detected by Coverity

Sergei Nikulov (10 Nov 2017)
- [John Starks brought this change]

  cmake: Correctly include curl.rc in Windows builds (#2064)
  
  Update CMakeLists.txt to add curl.rc to the correct list.

Daniel Stenberg (9 Nov 2017)
- RELEASE-NOTES: synced with 32828cc4f

- [Luca Boccassi brought this change]

  --interface: add support for Linux VRF
  
  The --interface command (CURLOPT_INTERFACE option) already uses
  SO_BINDTODEVICE on Linux, but it tries to parse it as an interface or IP
  address first, which fails in case the user passes a VRF.
  
  Try to use the socket option immediately and parse it as a fallback
  instead.  Update the documentation to mention this feature, and that it
  requires the binary to be ran by root or with CAP_NET_RAW capabilities
  for this to work.
  
  Closes #2024

- curl_share_setopt.3: document CURL_LOCK_DATA_CONNECT
  
  Closes #2043

- examples: add shared-connection-cache

- test1554: verify connection cache sharing

- share: add support for sharing the connection cache

- imap: deal with commands case insensitively
  
  As documented in RFC 3501 section 9:
  https://tools.ietf.org/html/rfc3501#section-9
  
  Closes #2061

- connect: store IPv6 connection status after valid connection
  
  ... previously it would store it already in the happy eyeballs stage
  which could lead to the IPv6 bit being set for an IPv4 connection,
  leading to curl not wanting to do EPSV=>PASV for FTP transfers.
  
  Closes #2053

- curl_multi_fdset.3: emphasize curl_multi_timeout
  
  ... even when there's no socket to wait for, the timeout can still be
  very short.

Jay Satiro (9 Nov 2017)
- content_encoding: fix inflate_stream for no bytes available
  
  - Don't call zlib's inflate() when avail_in stream bytes is 0.
  
  This is a follow up to the parent commit 19e66e5. Prior to that change
  libcurl's inflate_stream could call zlib's inflate even when no bytes
  were available, causing inflate to return Z_BUF_ERROR, and then
  inflate_stream would treat that as a hard error and return
  CURLE_BAD_CONTENT_ENCODING.
  
  According to the zlib FAQ, Z_BUF_ERROR is not fatal.
  
  This bug would happen randomly since packet sizes are arbitrary. A test
  of 10,000 transfers had 55 fail (ie 0.55%).
  
  Ref: https://zlib.net/zlib_faq.html#faq05
  
  Closes https://github.com/curl/curl/pull/2060

Patrick Monnerat (7 Nov 2017)
- content_encoding: do not write 0 length data

Daniel Stenberg (6 Nov 2017)
- fnmatch: remove dead code
  
  There was a duplicate check for backslashes in the setcharset()
  function.
  
  Coverity CID 1420611

- url: remove unncessary NULL-check
  
  Since 'conn' won't be NULL in there and we also access the pointer in
  there without the check.
  
  Coverity CID 1420610

Viktor Szakats (6 Nov 2017)
- src/Makefile.m32: fix typo in brotli lib customization
  
  Ref cc1f4436099decb9d1a7034b2bb773a9f8379d31

- Makefile.m32: allow to customize brotli libs
  
  It adds the ability to link against static brotli libs.
  
  Also fix brotli include path.

Patrick Monnerat (5 Nov 2017)
- travis: add a job with brotli enabled

- [Viktor Szakats brought this change]

  Makefile.m32: add brotli support

- HTTP: implement Brotli content encoding
  
  This uses the brotli external library (https://github.com/google/brotli).
  Brotli becomes a feature: additional curl_version_info() bit and
  structure fields are provided for it and CURLVERSION_NOW bumped.
  
  Tests 314 and 315 check Brotli content unencoding with correct and
  erroneous data.
  
  Some tests are updated to accomodate with the now configuration dependent
  parameters of the Accept-Encoding header.

- HTTP: support multiple Content-Encodings
  
  This is implemented as an output streaming stack of unencoders, the last
  calling the client write procedure.
  
  New test 230 checks this feature.
  
  Bug: https://github.com/curl/curl/pull/2002
  Reported-By: Daniel Bankhead

Jay Satiro (4 Nov 2017)
- url: remove arg value check from CURLOPT_SSH_AUTH_TYPES
  
  Since CURLSSH_AUTH_ANY (aka CURLSSH_AUTH_DEFAULT) is ~0 an arg value
  check on this option is incorrect; we have to accept any value.
  
  Prior to this change since f121575 (7.56.1+) CURLOPT_SSH_AUTH_TYPES
  erroneously rejected CURLSSH_AUTH_ANY with CURLE_BAD_FUNCTION_ARGUMENT.
  
  Bug: https://github.com/curl/curl/commit/f121575#commitcomment-25347120

Daniel Stenberg (4 Nov 2017)
- ntlm: avoid malloc(0) for zero length passwords
  
  It triggers an assert() when built with memdebug since malloc(0) may
  return NULL *or* a valid pointer.
  
  Detected by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4054
  
  Assisted-by: Max Dymond
  Closes #2054

- RELEASE-NOTES: synced with ee8016b3d

- curl: speed up handling of many URLs
  
  By properly keeping track of the last entry in the list of URLs/uploads
  to handle, curl now avoids many meaningless traverses of the list which
  speeds up many-URL handling *MASSIVELY* (several magnitudes on 100K
  URLs).
  
  Added test 1291, to verify that it doesn't take ages - but we don't have
  any detection of "too slow" command in the test suite.
  
  Reported-by: arainchik on github
  Fixes #1959
  Closes #2052

- curl: pass through [] in URLs instead of calling globbing error
  
  Assisted-by: Per Lundberg
  Fixes #2044
  Closes #2046
  Closes #2048

- CURLOPT_INFILESIZE: accept -1
  
  Regression since f121575
  
  Reported-by: Petr Voytsik
  Fixes #2047

Jay Satiro (2 Nov 2017)
- url: fix CURLOPT_DNS_CACHE_TIMEOUT arg value check to allow -1
  
  Prior to this change since f121575 (7.56.1+) CURLOPT_DNS_CACHE_TIMEOUT
  erroneously rejected -1 with CURLE_BAD_FUNCTION_ARGUMENT.

Dan Fandrich (1 Nov 2017)
- http2: Fixed OOM handling in upgrade request
  
  This caused the torture tests on test 1800 to fail.

- tests: Fixed torture tests on tests 556 and 650
  
  Test cleanup after OOM wasn't being consistently performed.

Daniel Stenberg (1 Nov 2017)
- CURLOPT_MAXREDIRS: allow -1 as a value
  
  ... which is valid according to documentation. Regression since
  f121575c0b5f.
  
  Verified now in test 501.
  
  Reported-by: cbartl on github
  Fixes #2038
  Closes #2039

- include: remove conncache.h inclusion from where its not needed

Jay Satiro (1 Nov 2017)
- url: fix CURLOPT_POSTFIELDSIZE arg value check to allow -1
  
  .. also add same arg value check to CURLOPT_POSTFIELDSIZE_LARGE.
  
  Prior to this change since f121575 (7.56.1+) CURLOPT_POSTFIELDSIZE
  erroneously rejected -1 value with CURLE_BAD_FUNCTION_ARGUMENT.
  
  Bug: https://curl.haxx.se/mail/lib-2017-11/0000.html
  Reported-by: Andrew Lambert

Daniel Stenberg (31 Oct 2017)
- cookie: avoid NULL dereference
  
  ... when expiring old cookies.
  
  Reported-by: Pavel Gushchin
  Fixes #2032
  Closes #2035

Marcel Raad (30 Oct 2017)
- memdebug: use send/recv signature for curl_dosend/curl_dorecv
  
  This avoids build errors and warnings caused by implicit casts.
  
  Closes https://github.com/curl/curl/pull/2031

Daniel Stenberg (30 Oct 2017)
- [Juro Bystricky brought this change]

  mkhelp.pl: support reproducible build
  
  Do not generate line with the current date, such as:
  
  * Generation time: Tue Oct-24 18:01:41 2017
  
  This will improve reproducibility. The generated string is only
  part of a comment, so there should be no adverse consequences.
  
  Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
  
  closes #2026

Dan Fandrich (30 Oct 2017)
- runtests.pl: Fixed typo in message

Daniel Stenberg (30 Oct 2017)
- curlx: the timeval functions are no longer provided as curlx_*
  
  Pointed-out-by: Dmitri Tikhonov
  Bug: #2034

- select: update comments
  
  s/curlx_tvnow/Curl_now

- INTERNALS: remove curlx_tv* functions no longer provided

- [Dmitri Tikhonov brought this change]

  timeval: use mach time on MacOS
  
  If clock_gettime() is not supported, use mach_absolute_time() on MacOS.
  
  closes #2033

monnerat (29 Oct 2017)
- [Patrick Monnerat brought this change]

  cli tool: improve ";type=" handling in -F option arguments

- [Patrick Monnerat brought this change]

  cli tool: in -F option arg, comma is a delimiter for files only
  
  Also upgrade test 1133 to cover this case and clarify man page about
  form data quoting.
  
  Bug: https://github.com/curl/curl/issues/2022
  Reported-By: omau on github

Daniel Stenberg (29 Oct 2017)
- timeleft: made two more users of Curl_timeleft use timediff_t

Jakub Zakrzewski (28 Oct 2017)
- cmake: Export libcurl and curl targets to use by other cmake projects
  
  The config files define curl and libcurl targets as imported targets
  CURL::curl and CURL::libcurl. For backward compatibility with CMake-
  provided find-module the CURL_INCLUDE_DIRS and CURL_LIBRARIES are
  also set.
  
  Closes #1879

Daniel Stenberg (28 Oct 2017)
- RELEASE-NOTES: synced with f20cbac97

- [Florin brought this change]

  auth: Added test cases for RFC7616
  
  Updated docs to include support for RFC7616
  
  Signed-off-by: Florin <petriuc.florin@gmail.com>
  
  Closes #1934

- [Florin brought this change]

  auth: add support for RFC7616 - HTTP Digest access authentication
  
  Signed-off-by: Florin <petriuc.florin@gmail.com>

- [Daniel Bankhead brought this change]

  TODO: support multiple Content-Encodings
  
  Closes #2002

- ROADMAP: cleanup
  
  Removed done stuff. Removed entries no longer considered for the near
  term.

- [Magicansk brought this change]

  ROADMAP.md: spelling fixes
  
  Closes #2028

- Curl_timeleft: change return type to timediff_t
  
  returning 'time_t' is problematic when that type is unsigned and we
  return values less than zero to signal "already expired", used in
  several places in the code.
  
  Closes #2021

- appveyor: add a win32 build

- setopt: fix CURLOPT_SSH_AUTH_TYPES option read
  
  Regression since f121575c0b5f
  
  Reported-by: Rob Cotrone

Marcel Raad (27 Oct 2017)
- resolvers: only include anything if needed
  
  This avoids warnings about unused stuff.
  
  Closes https://github.com/curl/curl/pull/2023

Daniel Stenberg (27 Oct 2017)
- HELP-US: rename the subtitle too since the label is changed
  
  "PR-welcome" was the former name.

- curl_setup.h: oops, shorten the too long line

- [Martin Storsjo brought this change]

  curl_setup: Improve detection of CURL_WINDOWS_APP
  
  If WINAPI_FAMILY is defined, it should be safe to try to include
  winapifamily.h to check what the define evaluates to.
  
  This should fix detection of CURL_WINDOWS_APP if building with
  _WIN32_WINNT set to 0x0600.
  
  Closes #2025

Jay Satiro (26 Oct 2017)
- transfer: Fix chunked-encoding upload bug
  
  - When uploading via chunked-encoding don't compare file size to bytes
    sent to determine whether the upload has finished.
  
  Chunked-encoding adds its own overhead which why the bytes sent is not
  equal to the file size. Prior to this change if a file was uploaded in
  chunked-encoding and its size was known it was possible that the upload
  could end prematurely without sending the final few chunks. That would
  result in a server hang waiting for the remaining data, likely followed
  by a disconnect.
  
  The scope of this bug is limited to some arbitrary file sizes which have
  not been determined. One size that triggers the bug is 475020.
  
  Bug: https://github.com/curl/curl/issues/2001
  Reported-by: moohoorama@users.noreply.github.com
  
  Closes https://github.com/curl/curl/pull/2010

Daniel Stenberg (26 Oct 2017)
- timeval: make timediff_t also work on 32bit windows
  
  ... by using curl_off_t for the typedef if time_t is larger than 4
  bytes.
  
  Reported-by: Gisle Vanem
  Bug: https://github.com/curl/curl/commit/b9d25f9a6b3ca791385b80a6a3c3fa5ae113e1e0#co
  mmitcomment-25205058
  Closes #2019

- curl_fnmatch: return error on illegal wildcard pattern
  
  ... instead of doing an infinite loop!
  
  Added test 1162 to verify.
  
  Reported-by: Max Dymond
  Fixes #2015
  Closes #2017

- [Max Dymond brought this change]

  wildcards: don't use with non-supported protocols
  
  Fixes timeouts in the fuzzing tests for non-FTP protocols.
  
  Closes #2016

- [Max Dymond brought this change]

  multi: allow table handle sizes to be overridden
  
  Allow users to specify their own hash define for
  CURL_CONNECTION_HASH_SIZE so that both values can be overridden.
  
  Closes #1982

- time: rename Curl_tvnow to Curl_now
  
  ... since the 'tv' stood for timeval and this function does not return a
  timeval struct anymore.
  
  Also, cleaned up the Curl_timediff*() functions to avoid typecasts and
  clean up the descriptive comments.
  
  Closes #2011

- ftplistparser: follow-up cleanup to remove PL_ERROR()

- [Max Dymond brought this change]

  ftplistparser: free off temporary memory always
  
  When using the FTP list parser, ensure that the memory that's
  allocated is always freed.
  
  Detected by OSS-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3682
  Closes #2013

- timediff: return timediff_t from the time diff functions
  
  ... to cater for systems with unsigned time_t variables.
  
  - Renamed the functions to curlx_timediff and Curl_timediff_us.
  
  - Added overflow protection for both of them in either direction for
    both 32 bit and 64 bit time_ts
  
  - Reprefixed the curlx_time functions to use Curl_*
  
  Reported-by: Peter Piekarski
  Fixes #2004
  Closes #2005

- [Paul Howarth brought this change]

  libtest: Add required test libraries for lib1552 and lib1553
  
  They use $(TESTUTIL) and thus should use $(TESTUTIL_LIBS) too.
  
  This fixes build failures on Fedora 13.
  
  Closes #2006

- [Alessandro Ghedini brought this change]

  libcurl-tutorial.3: fix typo
  
  closes #2008

Alessandro Ghedini (23 Oct 2017)
- curl_mime_filedata.3: fix typos

Daniel Stenberg (23 Oct 2017)
- RELEASE-NOTES: clean slate towards 7.57.0

- [Max Dymond brought this change]

  travis: exit if any steps fail
  
  We don't expect any steps to fail in travis. Exit the script if they do.
  
  Closes #1966

Version 7.56.1 (23 Oct 2017)

Daniel Stenberg (23 Oct 2017)
- RELEASE-NOTES: 7.56.1

- THANKS: update at 7.56.1 release time

- [Jon DeVree brought this change]

  mk-ca-bundle: Remove URL for aurora
  
  Aurora is no longer used by Mozilla
  https://hacks.mozilla.org/2017/04/simplifying-firefox-release-channels/

- [Jon DeVree brought this change]

  mk-ca-bundle: Fix URL for NSS
  
  The 'tip' is the most recent branch committed to, this should be
  'default' like the URLs for the browser are.
  
  Closes #1998

- imap: if a FETCH response has no size, don't call write callback
  
  CVE-2017-1000257
  
  Reported-by: Brian Carpenter and 0xd34db347
  Also detected by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3586

- ftp: reject illegal IP/port in PASV 227 response
  
  ... by using range checks. Among other things, this avoids an undefined
  behavior for a left shift that could happen on negative or very large
  values.
  
  Closes #1997
  
  Detected by OSS-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3694

Patrick Monnerat (20 Oct 2017)
- test653: check reuse of easy handle after mime data change
  
  See issue #1999

- mime: do not reuse previously computed multipart size
  
  The contents might have changed: size must be recomputed.
  
  Reported-by: moteus on github
  Fixes #1999

- test308: disable if MultiSSL feature enabled
  
  Even if OpenSSL is enabled, it might not be the default backend when
  multi-ssl is enabled, causing the test to fail.

- runtests: support MultiSSL client feature

- vtls: change struct Curl_ssl `close' field name to `close_one'.
  
  On OS/400, `close' is an ASCII system macro that corrupts the code if
  not used in a context not targetting the close() system API.

- os400: add missing symbols in config file.
  
  Also adjust makefile to renamed files and warn about installation dirs mix-up.

- test652: curl_mime_data + base64 encoder with large contents

- mime: limit bas64-encoded lines length to 76 characters

Daniel Stenberg (16 Oct 2017)
- RELEASE-NOTES: synced with f121575c0

- setopt: range check most long options
  
  ... filter early instead of risking "funny values" having to be dealt
  with elsewhere.

- setopt: avoid integer overflows when setting millsecond values
  
  ... that are multiplied by 1000 when stored.
  
  For 32 bit long systems, the max value accepted (2147483 seconds) is >
  596 hours which is unlikely to ever be set by a legitimate application -
  and previously it didn't work either, it just caused undefined behavior.
  
  Also updated the man pages for these timeout options to mention the
  return code.
  
  Closes #1938

Viktor Szakats (15 Oct 2017)
- makefile.m32: allow to override gcc, ar and ranlib
  
  Allow to ovverride certain build tools, making it possible to
  use LLVM/Clang to build curl. The default behavior is unchanged.
  To build with clang (as offered by MSYS2), these settings can
  be used:
  
  CURL_CC=clang
  CURL_AR=llvm-ar
  CURL_RANLIB=llvm-ranlib
  
  Closes https://github.com/curl/curl/pull/1993

- ldap: silence clang warning
  
  Use memset() to initialize a structure to avoid LLVM/Clang warning:
  ldap.c:193:39: warning: missing field 'UserLength' initializer [-Wmissing-field-initializers]
  
  Closes https://github.com/curl/curl/pull/1992

Daniel Stenberg (14 Oct 2017)
- runtests: use valgrind for torture as well
  
  NOTE: it makes them terribly slow. I recommend only using valgrind for
  specific torture tests or using lots of patience.

- memdebug: trace send, recv and socket
  
  ... to allow them to be included in torture tests too.
  
  closes #1980

- configure: remove the C++ compiler check
  
  ... we used it only for the fuzzer, which we now have in a separate git
  repo.
  
  Closes #1990

Patrick Monnerat (13 Oct 2017)
- mime: do not call failf() if easy handle is NULL.

Daniel Stenberg (13 Oct 2017)
- test651: curl_formadd with huge COPYCONTENTS

- mime: fix the content reader to handle >16K data properly
  
  Reported-by: Jeroen Ooms
  Closes #1988

Patrick Monnerat (12 Oct 2017)
- mime: keep "text/plain" content type if user-specified.
  
  Include test cases in 554, 587, 650.
  
  Fixes https://github.com/curl/curl/issues/1986

- cli tool: use file2memory() to buffer stdin in -F option.
  
  Closes PR https://github.com/curl/curl/pull/1985

- cli tool: reimplement stdin buffering in -F option.
  
  If stdin is not a regular file, its content is memory-buffered to enable
  a possible data "rewind".
  In all cases, stdin data size is determined before real use to avoid
  having an unknown part's size.
  
  --libcurl generated code is left as an unbuffered stdin fread/fseek callback
  part with unknown data size.
  
  Buffering is not supported in deprecated curl_formadd() API.

Daniel Stenberg (12 Oct 2017)
- winbuild/BUILD.WINDOWS.txt: mention WITH_NGHTTP2

- HELP-US: the label "PR-welcome" is now renamed to "help wanted"
  
  following the new github "standard"

- RELEASE-NOTES: synced with 5505df7d2

Jay Satiro (11 Oct 2017)
- [Artak Galoyan brought this change]

  url: Update current connection SSL verify params in setopt
  
  Now VERIFYHOST, VERIFYPEER and VERIFYSTATUS options change during active
  connection updates the current connection's (i.e.'connectdata'
  structure) appropriate ssl_config (and ssl_proxy_config) structures
  variables, making these options effective for ongoing connection.
  
  This functionality was available before and was broken by the
  following change:
  "proxy: Support HTTPS proxy and SOCKS+HTTP(s)"
  CommitId: cb4e2be7c6d42ca0780f8e0a747cecf9ba45f151.
  
  Bug: https://github.com/curl/curl/issues/1941
  
  Closes https://github.com/curl/curl/pull/1951

Daniel Stenberg (11 Oct 2017)
- [David Benjamin brought this change]

  openssl: don't use old BORINGSSL_YYYYMM macros
  
  Those were temporary things we'd add and remove for our own convenience
  long ago. The last few stayed around for too long as an oversight but
  have since been removed. These days we have a running
  BORINGSSL_API_VERSION counter which is bumped when we find it
  convenient, but 2015-11-19 was quite some time ago, so just check
  OPENSSL_IS_BORINGSSL.
  
  Closes #1979

- test950; verify SMTP with custom request

- ftpserver: support case insensitive commands

- smtp_done: free data before returning (on send failure)
  
  ... as otherwise it could leak that memory.
  
  Detected by OSS-fuzz:
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3600
  
  Assisted-by: Max Dymond
  Closes #1977

- FTP: URL decode path for dir listing in nocwd mode
  
  Reported-by: Zenju on github
  
  Test 244 added to verify
  Fixes #1974
  Closes #1976

- test298: verify --ftp-method nowcwd with URL encoded path
  
  Ref: #1974

- CURLOPT_XFERINFODATA.3: fix duplicate see also

- CURLOPT_NOPROGRESS.3: also refer to xferinfofunction

- FAQ: s/CURLOPT_PROGRESSFUNCTION/CURLOPT_XFERINFOFUNCTION

- openssl: enable PKCS12 support for !BoringSSL
  
  Enable PKCS12 for all non-boringssl builds without relying on configure
  or cmake checks.
  
  Bug: https://curl.haxx.se/mail/lib-2017-10/0007.html
  Reported-by: Christian Schmitz
  Closes #1948

- [Kristiyan Tsaklev brought this change]

  curl: don't pass semicolons when parsing Content-Disposition
  
  Test 1422 updated to verify.
  
  Closes #1964

Patrick Monnerat (9 Oct 2017)
- mime: properly unbind mime structure in curl_mime_free().
  
  This allows freeing a mime structure bound to the easy handle before
  curl_easy_cleanup().
  
  Fixes #1970.

Daniel Stenberg (9 Oct 2017)
- RTSP: avoid integer overflow on funny RTSP response
  
  ... like a very large non-existing RTSP version number.
  
  Added test 577 to verify.
  
  Detected by OSS-fuzz.
  Closes #1969

Patrick Monnerat (8 Oct 2017)
- ftpserver: properly reset $ftptargetdir.

- test643: verify curl_mime_subparts() rejects cyclic additions.

- mime: refuse to add subparts to one of their own descendants.
  
  Reported-by: Alexey Melnichuk
  Fixes #1962

- mime: avoid resetting a part's encoder when part's contents change.

- mime: improve unbinding top multipart from easy handle.
  
  Also avoid dangling pointers in referencing parts.

Daniel Stenberg (8 Oct 2017)
- RELEASE-NOTES: synced with a4c1c75da30af1

- curlver.h: next expected release is 7.57.0

Patrick Monnerat (8 Oct 2017)
- mime: be tolerant about setting twice the same header list in a part.

- docs: clarify form/mime usage of non-regular data files.

Daniel Stenberg (8 Oct 2017)
- Revert "multi_done: wait for name resolve to finish if still ongoing"
  
  This reverts commit f3e03f6c0ac52a1bf396e03f7d7e9b5b3b7165fe.
  
  Caused memory leaks in the fuzzer, needs to be done differently.
  
  Disable test 1553 for now too, as it causes memory leaks without this
  commit!

- remove_handle: call multi_done() first, then clear dns cache pointer
  
  Closes #1960

- multi_done: wait for name resolve to finish if still ongoing
  
  ... as we must clean up memory.

- pingpong: return error when trying to send without connection
  
  When imap_done() got called before a connection is setup, it would try
  to "finish up" and dereffed a NULL pointer.
  
  Test case 1553 managed to reproduce. I had to actually use a host name
  to try to resolve to slow it down, as using the normal local server IP
  will make libcurl get a connection in the first curl_multi_perform()
  loop and then the bug doesn't trigger.
  
  Fixes #1953
  Assisted-by: Max Dymond

Dan Fandrich (6 Oct 2017)
- tests: added flaky keyword to tests 587 and 644
  
  These are around 5% flaky in my Linux x86 autobuilds.

Marcel Raad (6 Oct 2017)
- vtls: fix warnings with --disable-crypto-auth
  
  When CURL_DISABLE_CRYPTO_AUTH is defined, Curl_none_md5sum's parameters
  are not used.

Daniel Stenberg (6 Oct 2017)
- multi_cleanup: call DONE on handles that never got that
  
  ... fixes a memory leak with at least IMAP when remove_handle is never
  called and the transfer is abruptly just abandoned early.
  
  Test 1552 added to verify
  
  Detected by OSS-fuzz
  Assisted-by: Max Dymond
  Closes #1954

- [Benbuck Nason brought this change]

  strtoofft: Remove extraneous null check
  
  Fixes #1950: curlx_strtoofft() doesn't fully protect against null 'str'
  argument.
  
  Closes #1952

- openssl: fix build without HAVE_OPAQUE_EVP_PKEY
  
  Reported-by: Javier Sixto
  Fixes #1955
  Closes #1956

Viktor Szakats (6 Oct 2017)
- lib/config-win32.h: let SMB/SMBS be enabled with OpenSSL/NSS
  
  The source code is now prepared to handle the case when both
  Win32 Crypto and OpenSSL/NSS crypto backends are enabled
  at the same time, making it now possible to enable `USE_WIN32_CRYPTO`
  whenever the targeted Windows version supports it. Since this
  matches the minimum Windows version supported by curl
  (Windows 2000), enable it unconditionally for the Win32 platform.
  
  This in turn enables SMB (and SMBS) protocol support whenever
  Win32 Crypto is available, regardless of what other crypto backends
  are enabled.
  
  Ref: https://github.com/curl/curl/pull/1840#issuecomment-325682052
  
  Closes https://github.com/curl/curl/pull/1943

Daniel Stenberg (5 Oct 2017)
- build: fix --disable-crypto-auth
  
  Reported-by: Wyatt O'Day
  Fixes #1945
  Closes #1947

Jay Satiro (5 Oct 2017)
- [Nick Zitzmann brought this change]

  darwinssl: add support for TLSv1.3
  
  Closes https://github.com/curl/curl/pull/1794

Daniel Stenberg (4 Oct 2017)
- [Felix Kaiser brought this change]

  docs: fix typo in curl_mime_data_cb man page
  
  Closes #1946

Viktor Szakats (4 Oct 2017)
- lib/Makefile.m32: allow customizing dll suffixes
  
  - New `CURL_DLL_SUFFIX` envvar will add a suffix to the generated
    libcurl dll name. Useful to add `-x64` to 64-bit builds so that
    it can live in the same directory as the 32-bit one. By default
    this is empty.
  
  - New `CURL_DLL_A_SUFFIX` envvar to customize the suffix of the
    generated import library (implib) for libcurl .dll. It defaults
    to `dll`, and it's useful to modify that to `.dll` to have the
    standard naming scheme for mingw-built .dlls, i.e. `libcurl.dll.a`.
  
  Closes https://github.com/curl/curl/pull/1942

Daniel Stenberg (4 Oct 2017)
- [Max Dymond brought this change]

  fuzzer: move to using external curl-fuzzer
  
  Use the external curl-fuzzer repository for fuzzing.
  
  Closes #1923

- failf: skip the sprintf() if there are no consumers
  
  Closes #1936

- ftp: UBsan fixup 'pointer index expression overflowed'
  
  Closes #1939

- RELEASE-PROCEDURE: update the release schedule

Version 7.56.0 (4 Oct 2017)

Daniel Stenberg (4 Oct 2017)
- RELEASE-NOTES: curl 7.56.0

- THANKS: added new 7.56.0 contributors

Jay Satiro (4 Oct 2017)
- build-openssl.bat: Warn OpenSSL 1.1.0 not yet supported
  
  Ref: https://github.com/curl/curl/issues/1002

Michael Kaufmann (3 Oct 2017)
- idn: fix source code comment

- vtls: compare and clone ssl configs properly
  
  Compare these settings in Curl_ssl_config_matches():
  - verifystatus (CURLOPT_SSL_VERIFYSTATUS)
  - random_file (CURLOPT_RANDOM_FILE)
  - egdsocket (CURLOPT_EGDSOCKET)
  
  Also copy the setting "verifystatus" in Curl_clone_primary_ssl_config(),
  and copy the setting "sessionid" unconditionally.
  
  This means that reusing connections that are secured with a client
  certificate is now possible, and the statement "TLS session resumption
  is disabled when a client certificate is used" in the old advisory at
  https://curl.haxx.se/docs/adv_20170419.html is obsolete.
  
  Reviewed-by: Daniel Stenberg
  
  Closes #1917

- proxy: read the "no_proxy" variable only if necessary
  
  Reviewed-by: Daniel Stenberg
  
  Closes #1919

Patrick Monnerat (3 Oct 2017)
- libcurl-tutorial: add casts in example to avoid compilation warnings.

Daniel Stenberg (3 Oct 2017)
- examples: bring back curl_formadd-using examples
  
  ... now with a -formadd suffix. While the new mime API is introduced in
  7.56.0 we must acknowledge that lots of users can't upgrade their curl
  versions immediately.

- test1153: verify quoted double-qoutes in PWD response

- FTP: zero terminate the entry path even on bad input
  
  ... a single double quote could leave the entry path buffer without a zero
  terminating byte. CVE-2017-1000254
  
  Test 1152 added to verify.
  
  Reported-by: Max Dymond
  Bug: https://curl.haxx.se/docs/adv_20171004.html

Jay Satiro (2 Oct 2017)
- [Sergei Nikulov brought this change]

  cmake: disable tests and man generation if perl/nroff not found
  
  Fixes https://github.com/curl/curl/issues/1500
  Reported-by: Jay Satiro
  
  Fixes https://github.com/curl/curl/pull/1662
  Assisted-by: Tom Seddon
  Assisted-by: dpull@users.noreply.github.com
  Assisted-by: elelel@users.noreply.github.com
  
  Closes https://github.com/curl/curl/pull/1924

Patrick Monnerat (2 Oct 2017)
- libcurl-tutorial: fix two typos.

- TODO: remove deprecated form API items.

- libcurl-tutorial: describe MIME API and deprecate form API.
  
  Include a guide to form/mime API conversion.

Daniel Stenberg (30 Sep 2017)
- cookie: fix memory leak if path was set twice in header
  
  ... this will let the second occurance override the first.
  
  Added test 1161 to verify.
  
  Reported-by: Max Dymond
  Fixes #1932
  Closes #1933

Dan Fandrich (30 Sep 2017)
- test650: Use variable replacement to set the host address and port
  
  Otherwise, the test fails when the -b test option is used to set a
  different test port range.

- Set and use more necessary options when some protocols are disabled
  
  When curl and libcurl are built with some protocols disabled, they stop
  setting and receiving some options that don't make sense with those
  protocols.  In particular, when HTTP is disabled many options aren't set
  that are used only by HTTP.  However, some options that appear to be
  HTTP-only are actually used by other protocols as well (some despite
  having HTTP in the name) and should be set, but weren't. This change now
  causes some of these options to be set and used for more (or for all)
  protocols. In particular, this fixes tests 646 through 649 in an
  HTTP-disabled build, which use the MIME API in the mail protocols.

Daniel Stenberg (29 Sep 2017)
- test1160: verifies cookie leak for large cookies
  
  The fix done in 20ea22ff735

- cookie: fix memory leak on oversized rejection
  
  Regression brought by 2bc230de63b
  
  Detected by OSS-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3513
  Assisted-by: Max Dymond
  
  Closes #1930

- [Anders Bakken brought this change]

  connect: fix race condition with happy eyeballs timeout
  
  The timer should be started after conn->connecttime is set. Otherwise
  the timer could expire without this condition being true:
  
      /* should we try another protocol family? */
      if(i == 0 && conn->tempaddr[1] == NULL &&
        curlx_tvdiff(now, conn->connecttime) >= HAPPY_EYEBALLS_TIMEOUT) {
  
  Ref: #1928

Michael Kaufmann (28 Sep 2017)
- docs: link CURLOPT_CONNECTTIMEOUT and CURLOPT_CONNECTTIMEOUT_MS
  
  Closes #1922

- docs: clarify the use of environment variables for proxy
  
  Closes #1921

- http: add custom empty headers to repeated requests
  
  Closes #1920

- reuse_conn: don't copy flags that are known to be equal
  
  A connection can only be reused if the flags "conn_to_host" and
  "conn_to_port" match. Therefore it is not necessary to copy these flags
  in reuse_conn().
  
  Closes #1918

Daniel Stenberg (27 Sep 2017)
- curl.h: include <sys/select.h> on cygwin too
  
  When building with -std=c++14 on cygwin, this header won't be
  automatically included as it otherwise is.
  
  The <sys/select.h> include decision should ideally be reversed and be
  avoided where that header file doesn't exist.
  
  Reported-by: Ian Fette
  Fixes #1925

- RELEASE-NOTES: synced with d8ab5dc50

Michael Kaufmann (24 Sep 2017)
- tests: adjust .gitignore for new tests

Jay Satiro (23 Sep 2017)
- ntlm: move NTLM_NEEDS_NSS_INIT define into core NTLM header
  
  .. and include the core NTLM header in all NTLM-related source files.
  
  Follow up to 6f86022. Since then http_ntlm checks NTLM_NEEDS_NSS_INIT
  but did not include vtls.h where it was defined.
  
  Closes https://github.com/curl/curl/pull/1911

Daniel Stenberg (23 Sep 2017)
- file_range: avoid integer overflow when figuring out byte range
  
  When trying to bump the value with one and the value is already at max,
  it causes an integer overflow.
  
  Closes #1908
  Detected by oss-fuzz:
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3465
  
  Assisted-by: Max Dymond

Michael Kaufmann (23 Sep 2017)
- tests: fix a compiler warning in test 643

Jay Satiro (23 Sep 2017)
- symbols-in-versions: fix CURLSSLSET_NO_BACKENDS entry
  
  - Use spaces instead of tabs as the delimiter.
  
  Follow up to 7c52b12 which added the entry. The entry had used tabs but
  the symbol-scan parser doesn't recognize tabs and would fail the symbol.

Viktor Szakats (22 Sep 2017)
- metalink: fix NSS issue in MultiSSL builds
  
  In MultiSSL mode (i.e. when more than one SSL backend is compiled
  in), we cannot use the compile time flag `USE_NSS` as indicator that
  the NSS backend is in use. As far as Metalink is concerned, the SSL
  backend is only used for MD5, SHA-1 and SHA-256 calculations,
  therefore one of the available SSL backends is selected at compile
  time, in a strict order of preference.
  
  Let's introduce a new `HAVE_NSS_CONTEXT` constant that can be used
  to determine whether the SSL backend used for Metalink is the NSS
  backend, and use that to guard the code that wants to de-initialize
  the NSS-specific data structure.
  
  Ref: https://github.com/curl/curl/pull/1848

- ntlm: use strict order for SSL backend #if branches
  
  With the recently introduced MultiSSL support multiple SSL backends
  can be compiled into cURL That means that now the order of the SSL
  
  One option would be to use the same SSL backend as was configured
  via `curl_global_sslset()`, however, NTLMv2 support would appear
  to be available only with some SSL backends. For example, when
  eb88d778e (ntlm: Use Windows Crypt API, 2014-12-02) introduced
  support for NTLMv1 using Windows' Crypt API, it specifically did
  *not* introduce NTLMv2 support using Crypt API at the same time.
  
  So let's select one specific SSL backend for NTLM support when
  compiled with multiple SSL backends, using a priority order such
  that we support NTLMv2 even if only one compiled-in SSL backend can
  be used for that.
  
  Ref: https://github.com/curl/curl/pull/1848

Daniel Stenberg (22 Sep 2017)
- symbols-in-versions: add CURLSSLSET_NO_BACKENDS
  
  ...fixup from b8e0fe19ec

- imap: quote atoms properly when escaping characters
  
  Updates test 800 to verify
  
  Fixes #1902
  Closes #1903

- tests: make the imap server not verify user+password
  
  ... as the test cases themselves do that and it makes it easier to add
  crazy test cases.
  
  Test 800 updated to use user name + password that need quoting.
  
  Test 856 updated to trigger an auth fail differently.
  
  Ref: #1902

- vtls: provide curl_global_sslset() even in non-SSL builds
  
  ... it just returns error:
  
  Bug: https://github.com/curl/curl/commit/1328f69d53f2f2e937696ea954c480412b018451#commitcomment-24470367
  Reported-by: Marcel Raad
  
  Closes #1906

Patrick Monnerat (22 Sep 2017)
- form/mime: field names are not allowed to contain zero-valued bytes.
  
  Also suppress length argument of curl_mime_name() (names are always
  zero-terminated).

Daniel Stenberg (21 Sep 2017)
- [Dirk Feytons brought this change]

  openssl: only verify RSA private key if supported
  
  In some cases the RSA key does not support verifying it because it's
  located on a smart card, an engine wants to hide it, ...
  Check the flags on the key before trying to verify it.
  OpenSSL does the same thing internally; see ssl/ssl_rsa.c
  
  Closes #1904

Marcel Raad (21 Sep 2017)
- examples/post-callback: use long for CURLOPT_POSTFIELDSIZE
  
  Otherwise, typecheck-gcc.h warns on MinGW-w64.

Patrick Monnerat (20 Sep 2017)
- mime: rephrase the multipart output state machine (#1898) ...
  
  ... in hope coverity will like it much.

- mime: fix an explicit null dereference (#1899)

Daniel Stenberg (20 Sep 2017)
- curl: check fseek() return code and bail on error
  
  Detected by coverity. CID 1418137.

- smtp: fix memory leak in OOM
  
  Regression since ce0881edee
  
  Coverity CID 1418139 and CID 1418136 found it, but it was also seen in
  torture testing.

- RELEASE-NOTES: synced with 5fe85587c

- [Pavel P brought this change]

  cookies: use lock when using CURLINFO_COOKIELIST
  
  Closes #1896

- [Max Dymond brought this change]

  ossfuzz: changes before merging the generated corpora
  
  Before merging in the oss-fuzz corpora from Google, there are some changes
  to the fuzzer.
  - Add a read corpus script, to display corpus files nicely.
  - Change the behaviour of the fuzzer so that TLV parse failures all now
    go down the same execution paths, which should reduce the size of the
    corpora.
  - Make unknown TLVs a failure to parse, which should decrease the size
    of the corpora as well.
  
  Closes #1881

- mime:escape_string minor clarification change
  
  ... as it also removes a warning with old gcc versions.
  
  Bug: https://curl.haxx.se/mail/lib-2017-09/0049.html
  Reported-by: Ben Greear

- [Max Dymond brought this change]

  ossfuzz: don't write out to stdout
  
  Don't make the fuzzer write out to stdout - instead write some of the
  contents to a memory block so we exercise the data output code but
  quietly.
  
  Closes #1885

- cookies: reject oversized cookies
  
  ... instead of truncating them.
  
  There's no fixed limit for acceptable cookie names in RFC 6265, but the
  entire cookie is said to be less than 4096 bytes (section 6.1). This is
  also what browsers seem to implement.
  
  We now allow max 5000 bytes cookie header. Max 4095 bytes length per
  cookie name and value. Name + value together may not exceed 4096 bytes.
  
  Added test 1151 to verify
  
  Bug: https://curl.haxx.se/mail/lib-2017-09/0062.html
  Reported-by: Kevin Smith
  
  Closes #1894

- travis: on mac, don't install openssl or libidn
  
  - openssl is already installed and causes warnings when trying to
    install again
  
  - libidn isn't used these days, and homebrew doesn't seem to have a
    libidn2 package to replace with easily
  
  Closes #1895

- curl: make str2udouble not return values on error
  
  ... previously it would store a return value even when it returned
  error, which could make the value get used anyway!
  
  Reported-by: Brian Carpenter
  Closes #1893

Jay Satiro (18 Sep 2017)
- socks: fix incorrect port number in SOCKS4 error message
  
  Prior to this change it appears the SOCKS5 port parsing was erroneously
  used for the SOCKS4 error message, and as a result an incorrect port
  would be shown in the error message.
  
  Bug: https://github.com/curl/curl/issues/1892
  Reported-by: Jackarain@users.noreply.github.com

- [Marc Aldorasi brought this change]

  schannel: Support partial send for when data is too large
  
  Schannel can only encrypt a certain amount of data at once.  Instead of
  failing when too much data is to be sent at once, send as much data as
  we can and let the caller send the remaining data by calling send again.
  
  Bug: https://curl.haxx.se/mail/lib-2014-07/0033.html
  
  Closes https://github.com/curl/curl/pull/1890

- [David Benjamin brought this change]

  openssl: add missing includes
  
  lib/vtls/openssl.c uses OpenSSL APIs from BUF_MEM and BIO APIs. Include
  their headers directly rather than relying on other OpenSSL headers
  including things.
  
  Closes https://github.com/curl/curl/pull/1891

Daniel Stenberg (15 Sep 2017)
- conversions: fix several compiler warnings

- server/getpart: provide dummy function to build conversion enabled

- non-ascii: use iconv() with 'char **' argument
  
  Bug: https://curl.haxx.se/mail/lib-2017-09/0031.html

- escape.c: error: pointer targets differ in signedness

- docs: clarify the CURLOPT_INTERLEAVE* options behavior

- [Max Dymond brought this change]

  rtsp: Segfault in rtsp.c when using WRITEDATA
  
  If the INTERLEAVEFUNCTION is defined, then use that plus the
  INTERLEAVEDATA information when writing RTP. Otherwise, use
  WRITEFUNCTION and WRITEDATA.
  
  Fixes #1880
  Closes #1884

Marcel Raad (15 Sep 2017)
- [Isaac Boukris brought this change]

  tests: enable gssapi in travis-ci linux build
  
  Closes https://github.com/curl/curl/pull/1687

- [Isaac Boukris brought this change]

  tests: add initial gssapi test using stub implementation
  
  The stub implementation is pre-loaded using LD_PRELOAD
  and emulates common gssapi uses (only builds if curl is
  initially built with gssapi support).
  
  The initial tests are currently disabled for debug builds
  as LD_PRELOAD is not used then.
  
  Ref: https://github.com/curl/curl/pull/1687

Daniel Stenberg (15 Sep 2017)
- test1150: verify same host fetch using different ports over proxy
  
  Closes #1889

- URL: on connection re-use, still pick the new remote port
  
  ... as when a proxy connection is being re-used, it can still get a
  different remote port.
  
  Fixes #1887
  Reported-by: Oli Kingshott

- RELEASE-NOTES: synced with 87501e57f

- code style: remove wrong uses of multiple spaces
  
  Closes #1878

- checksrc: detect and warn for multiple spaces

- code style: use space after semicolon

- checksrc: verify space after semicolons

- code style: use spaces around pluses

- checksrc: detect and warn for lack of spaces next to plus signs

- code style: use spaces around equals signs

- checksrc: verify spaces around equals signs
  
  ... as the code style mandates.

- Curl_checkheaders: make it available for IMAP and SMTP too
  
  ... not only HTTP uses this now.
  
  Closes #1875

- travis: add build without HTTP/SMTP/IMAP

Jay Satiro (10 Sep 2017)
- mbedtls: enable CA path processing
  
  CA path processing was implemented when mbedtls.c was added to libcurl
  in fe7590f, but it was never enabled.
  
  Bug: https://github.com/curl/curl/issues/1877
  Reported-by: SBKarr@users.noreply.github.com

Daniel Stenberg (8 Sep 2017)
- rtsp: do not call fwrite() with NULL pointer FILE *
  
  If the default write callback is used and no destination has been set, a
  NULL pointer would be passed to fwrite()'s 4th argument.
  
  OSS-fuzz bug https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3327
  (not publicly open yet)
  
  Detected by OSS-fuzz
  Closes #1874

- configure: use -Wno-varargs on clang 3.9[.X] debug builds
  
  ... to avoid a clang bug

- [Max Dymond brought this change]

  ossfuzz: add some more handled CURL options
  
  Add support for HEADER, COOKIE, RANGE, CUSTOMREQUEST, MAIL_RECIPIENT,
  MAIL_FROM and uploading data.

- configure: check for C++ compiler after C, to make it non-fatal
  
  The tests for object file/executable file extensions are presumably only
  done for the first of these macros in the configure file.
  
  Bug: https://github.com/curl/curl/pull/1851#issuecomment-327597515
  Reported-by: Marcel Raad
  Closes #1873

Patrick Monnerat (7 Sep 2017)
- form API: add new test 650.
  
  Now that the form API is deprecated and not used anymore in curl tool,
  a lot of its features left untested. Test 650 attempts to check all these
  features not tested elsewhere.

Jay Satiro (7 Sep 2017)
- configure: fix curl_off_t check's include order
  
  - Prepend srcdir include path instead of append.
  
  Prior to this change it was possible that during the check for the size
  of curl_off_t the include path of a user's already installed curl could
  come before the include path of the to-be-built curl, resulting in the
  system.h of the former being incorrectly included for that check.
  
  Closes https://github.com/curl/curl/pull/1870

Daniel Stenberg (7 Sep 2017)
- [Jakub Zakrzewski brought this change]

  KNOWN_BUGS: Remove CMake symbol hiding issue
  
  It has already been fixed in 6140dfc

- http-proxy: when not doing CONNECT, that phase is done immediately
  
  `conn->connect_state` is NULL when doing a regular non-CONNECT request
  over the proxy and should therefor be considered complete at once.
  
  Fixes #1853
  Closes #1862
  Reported-by: Lawrence Wagerfield

- [Johannes Schindelin brought this change]

  OpenSSL: fix yet another mistake while encapsulating SSL backend data
  
  Another mistake in my manual fixups of the largely mechanical
  search-and-replace ("connssl->" -> "BACKEND->"), just like the previous
  commit concerning HTTPS proxies (and hence not caught during my
  earlier testing).
  
  Fixes #1855
  Closes #1871
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  OpenSSL: fix erroneous SSL backend encapsulation
  
  In d65e6cc4f (vtls: prepare the SSL backends for encapsulated private
  data, 2017-06-21), this developer prepared for a separation of the
  private data of the SSL backends from the general connection data.
  
  This conversion was partially automated (search-and-replace) and
  partially manual (e.g. proxy_ssl's backend data).
  
  Sadly, there was a crucial error in the manual part, where the wrong
  handle was used: rather than connecting ssl[sockindex]' BIO to the
  proxy_ssl[sockindex]', we reconnected proxy_ssl[sockindex]. The reason
  was an incorrect location to paste "BACKEND->"... d'oh.
  
  Reported by Jay Satiro in https://github.com/curl/curl/issues/1855.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Jay Satiro brought this change]

  vtls: fix memory corruption
  
  Ever since 70f1db321 (vtls: encapsulate SSL backend-specific data,
  2017-07-28), the code handling HTTPS proxies was broken because the
  pointer to the SSL backend data was not swapped between
  conn->ssl[sockindex] and conn->proxy_ssl[sockindex] as intended, but
  instead set to NULL (causing segmentation faults).
  
  [jes: provided the commit message, tested and verified the patch]
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- vtls: switch to CURL_SHA256_DIGEST_LENGTH define
  
  ... instead of the prefix-less version since WolfSSL 3.12 now uses an
  enum with that name that causes build failures for us.
  
  Fixes #1865
  Closes #1867
  Reported-by: Gisle Vanem

- travis: add c-ares enabled builds linux + osx
  
  Closes #1868

- HISTORY: added some recent items

Jay Satiro (6 Sep 2017)
- SSL: fix unused parameter warnings

Patrick Monnerat (6 Sep 2017)
- mime: drop internal FILE * support.
  
  - The part kind MIMEKIND_FILE and associated code are suppressed.
  - Seek data origin offset not used anymore: suppressed.
  - MIMEKIND_NAMEDFILE renamed MIMEKIND_FILE; associated fields/functions
    renamed accordingly.
  - Curl_getformdata() processes stdin via a callback.

Daniel Stenberg (6 Sep 2017)
- configure: remove --enable-soname-bump and SONAME_BUMP
  
  Back in 2008, (and commit 3f3d6ebe665f3) we changed the logic in how we
  determine the native type for `curl_off_t`. To really make sure we
  didn't break ABI without bumping SONAME, we introduced logic that
  attempted to detect that it would use a different size and thus not be
  compatible. We also provided a manual switch that allowed users to tell
  configure to bump SONAME by force.
  
  Today, we know of no one who ever got a SONAME bump auto-detected and we
  don't know of anyone who's using the manual bump feature. The auto-
  detection is also no longer working since we introduced defining
  curl_off_t in system.h (7.55.0).
  
  Finally, this bumping logic is not present in the cmake build.
  
  Closes #1861

Jay Satiro (6 Sep 2017)
- [Gisle Vanem brought this change]

  vtls: select ssl backend case-insensitive (follow-up)
  
  - Do a case-insensitive comparison of CURL_SSL_BACKEND env as well.
  
  - Change Curl_strcasecompare calls to strcasecompare
    (maps to the former but shorter).
  
  Follow-up to c290b8f.
  
  Bug: https://github.com/curl/curl/commit/c290b8f#commitcomment-24094313
  
  Co-authored-by: Jay Satiro

- openssl: Integrate Peter Wu's SSLKEYLOGFILE implementation
  
  This is an adaptation of 2 of Peter Wu's SSLKEYLOGFILE implementations.
  
  The first one, written for old OpenSSL versions:
  https://git.lekensteyn.nl/peter/wireshark-notes/tree/src/sslkeylog.c
  
  The second one, written for BoringSSL and new OpenSSL versions:
  https://github.com/curl/curl/pull/1346
  
  Note the first one is GPL licensed but the author gave permission to
  waive that license for libcurl.
  
  As of right now this feature is disabled by default, and does not have
  a configure option to enable it. To enable this feature define
  ENABLE_SSLKEYLOGFILE when building libcurl and set environment
  variable SSLKEYLOGFILE to a pathname that will receive the keys.
  
  And in Wireshark change your preferences to point to that key file:
  Edit > Preferences > Protocols > SSL > Master-Secret
  
  Co-authored-by: Peter Wu
  
  Ref: https://github.com/curl/curl/pull/1030
  Ref: https://github.com/curl/curl/pull/1346
  
  Closes https://github.com/curl/curl/pull/1866

Patrick Monnerat (5 Sep 2017)
- mime: fix a trivial warning.

- mime: replace 'struct Curl_mimepart' by 'curl_mimepart' in encoder code.
  
  mime_state is now a typedef.

- mime: implement encoders.
  
  curl_mime_encoder() is operational and documented.
  curl tool -F option is extended with ";encoder=".
  curl tool --libcurl option generates calls to curl_mime_encoder().
  New encoder tests 648 & 649.
  Test 1404 extended with an encoder specification.

- runtests.pl: support attribute "nonewline" in part verify/upload.

- [Daniel Stenberg brought this change]

  fixup data/test1135

- [Daniel Stenberg brought this change]

  mime: unified to use the typedef'd mime structs everywhere
  
  ... and slightly edited to follow our code style better.

- [Daniel Stenberg brought this change]

  curl.h: use lower case curl_mime* as for all public symbols

- [Daniel Stenberg brought this change]

  docs/curl_mime_*.3: use correct variable types in examples

Kamil Dudka (5 Sep 2017)
- openssl: use OpenSSL's default ciphers by default
  
  Up2date versions of OpenSSL maintain the default reasonably secure
  without breaking compatibility, so it is better not to override the
  default by curl.  Suggested at https://bugzilla.redhat.com/1483972
  
  Closes #1846

Viktor Szakats (5 Sep 2017)
- examples/mime: minor example code fixes

Daniel Stenberg (5 Sep 2017)
- docs/curl_mime_*.3: added examples

- configure: add MultiSSL to FEATURES when enabled
  
  ...for curl-config and its corresponding test 1014

- http-proxy: treat all 2xx as CONNECT success
  
  Added test 1904 to verify.
  
  Reported-by: Lawrence Wagerfield
  Fixes #1859
  Closes #1860

- MAIL-ETIQUETTE: added "1.9 Your emails are public"

- curl.h: fix "unused checksrc ignore", remove dangling reference
  
  ... to a README file that doesn't exist anymore

Viktor Szakats (4 Sep 2017)
- docs: Update to secure URL versions

- mime: use CURL_ZERO_TERMINATED in examples
  
  and some minor whitespace fixes

Daniel Stenberg (4 Sep 2017)
- schannel: return CURLE_SSL_CACERT on failed verification
  
  ... not *CACERT_BADFILE as it isn't really because of a bad file.
  
  Bug: https://curl.haxx.se/mail/lib-2017-09/0002.html
  Closes #1858

- test1135: fixed after bd8070085f9

- examples/post-callback: stop returning one byte at a time
  
  ... since people copy and paste code from this example and thus they get
  an inefficient POST operation without a good reason and sometimes
  without understanding why.
  
  Instead this now returns as much data as possible.

- RELEASE-NOTES: fixed the function counter script

- curl.h: make the curl_strequal() protos use the same style
  
  ... as the other functions. Makes it easier to machine-parse!

- docs: curl_mime_*.3 man page formatting edits

- RELEASE-NOTES: synced with 1ab9e9b50

Patrick Monnerat (4 Sep 2017)
- lib: bump version info (soname). Adapt and reenable test 1135.

Daniel Stenberg (3 Sep 2017)
- headers: move the global_sslset() proto from multi.h to curl.h
  
  As it was added to multi.h simply to not break test 1135, which now has
  been disabled due to the mime API addition anyway and su we can now move
  the sslset stuff to where the other curl_global_* prototypes are.

Patrick Monnerat (3 Sep 2017)
- mime: fix signed/unsigned conversions.
  
  Use and generate CURL_ZERO_TERMINATED in curl tool and tests.

Jay Satiro (3 Sep 2017)
- tool_formparse: fix some trivial warnings

Patrick Monnerat (3 Sep 2017)
- mime: use size_t instead of ssize_t in public API interface.
  
  To support telling a string is nul-terminated, symbol CURL_ZERO_TERMINATED
  has been introduced.
  
  Documentation updated accordingly.
  
  symbols in versions updated. Added form API symbols deprecation info.

- mime: remove support "-" stdin pseudo-file name in curl_mime_filedata().
  
  This feature is badly supported in Windows: as a replacement, a caller has
  to use curl_mime_data_cb() with fread, fseek and possibly fclose
  callbacks to process opened files.
  
  The cli tool and documentation are updated accordingly.
  
  The feature is however kept internally for form API compatibility, with
  the known caveats it always had.
  
  As a side effect, stdin size is not determined by the cli tool even if
  possible and this results in a chunked transfer encoding. Test 173 is
  updated accordingly.

- mime: fix some implicit curl_off_t --> size_t conversion warnings.

- mime: tests and examples.
  
  Additional mime-specific tests.
  Existing tests updated to reflect small differences (Expect: 100-continue,
  data size change due to empty lines, etc).
  Option -F headers= keyword added to tests.
  test1135 disabled until the entry point order change is resolved.
  New example smtp-mime.
  Examples postit2 and multi-post converted from form API to mime API.

- mime: use in curl cli tool instead of form API.
  
  Extended -F option syntax to support multipart mail messages.
  -F keyword headers= added to include custom headers in parts.
  Documentation upgraded.

- mime: new MIME API.
  
  Available in HTTP, SMTP and IMAP.
  Deprecates the FORM API.
  See CURLOPT_MIMEPOST.
  Lib code and associated documentation.

- test564: Add a warning comment about shell profile output.
  
  Shell profile output makes the SSH server failing and this problem reason
  is not easy to find when no hint is given.

- checksrc: disable SPACEBEFOREPAREN for case statement.
  
  The case keyword may be followed by a constant expression and thus should
  allow it to start with an open parenthesis.

- runtests.pl: allow <file[1-4]> tags in client section.
  
  This enables tests to create more than one file on the client side.

- runtests.pl: Apply strippart to upload too.
  
  This will allow substitution of boundaries in mail messages.

- Curl_base64_encode: always call with a real data handle.
  
  Some calls in different modules were setting the data handle to NULL, causing
  segmentation faults when using builds that enable character code conversions.

- non-ascii: allow conversion functions to be called with a NULL data handle.

- http: fix a memory leakage in checkrtspprefix().

Daniel Stenberg (2 Sep 2017)
- [Max Dymond brought this change]

  ossfuzz: Move to C++ for curl_fuzzer.
  
  Automake gets confused if you want to use C++ static libraries with C
  code - basically we need to involve the clang++ linker. The easiest way
  of achieving this is to rename the C code as C++ code. This gets us a
  bit further along the path and ought to be compatible with Google's
  version of clang.

- curl_global_sslset: select backend by name case insensitively
  
  Closes #1849

- [Max Dymond brought this change]

  ossfuzz: additional seed corpora
  
  Create simple seed corpora for:
  - FTP
  - telnet
  - dict
  - tftp
  - imap
  - pop3
  
  based off the tests of the same number.
  
  Closes #1842

- [Max Dymond brought this change]

  ossfuzz: moving towards the ideal integration
  
  - Start with the basic code from the ossfuzz project.
  - Rewrite fuzz corpora to be binary files full of Type-Length-Value
    data, and write a glue layer in the fuzzing function to convert
    corpora into CURL options.
  - Have supporting functions to generate corpora from existing tests
  - Integrate with Makefile.am

- strcase: corrected comment header for Curl_strcasecompare()

- unit1301: fix error message on first test

- curl_global_sslset.3: show the struct and enum too
  
  ... so that users can actually write code based on the man page alone,
  not having to read the header file.

Jay Satiro (31 Aug 2017)
- darwinssl: handle long strings in TLS certs (follow-up)
  
  - Fix handling certificate subjects that are already UTF-8 encoded.
  
  Follow-up to b3b75d1 from two days ago. Since then a copy would be
  skipped if the subject was already UTF-8, possibly resulting in a NULL
  deref later on.
  
  Ref: https://github.com/curl/curl/issues/1823
  Ref: https://github.com/curl/curl/pull/1831
  
  Closes https://github.com/curl/curl/pull/1836

Daniel Stenberg (31 Aug 2017)
- cyassl: call it the "WolfSSL" backend
  
  ... instead of cyassl, as this is the current name for it.
  
  Closes #1844

- polarssl: fix multissl breakage
  
  Reported-by: Dan Fandrich
  Bug: https://curl.haxx.se/mail/lib-2017-08/0121.html
  Closes #1843

- configure: remove the leading comma from the backends list
  
  ... when darwinssl is used.
  
  Reported-by: Viktor Szakats
  Bug: https://github.com/curl/curl/commit/b0989cd3abaff4f9a0717b4875022fa79e33b481#commitcomment-23943493
  
  Closes #1845

Kamil Dudka (30 Aug 2017)
- examples/sslbackend.c: fix failure of 'make checksrc'
  
  ./sslbackend.c:58:3: warning: else after closing brace on same line (BRACEELSE)
     } else if(isdigit(*name)) {
     ^
  ./sslbackend.c:62:3: warning: else after closing brace on same line (BRACEELSE)
     } else
     ^

Viktor Szakats (30 Aug 2017)
- makefile.m32: add multissl support
  
  Closes https://github.com/curl/curl/pull/1840

Daniel Stenberg (30 Aug 2017)
- curl.h: CURLSSLBACKEND_WOLFSSL used wrong value
  
  The CURLSSLBACKEND_WOLFSSL is supposed to be an alias for
  CURLSSLBACKEND_CYASSL, but used an erronous value. To reduce the risk
  for a similar mistake, define the backend aliases to use the enum values
  instead.
  
  Reported-by: Gisle Vanem
  Bug: https://curl.haxx.se/mail/lib-2017-08/0120.html

- curl_global_sslset.3: clarify
  
  it is a one time *set*, not necessarily a one time use... it can be
  called again if the first call failed or just listed the alternatives.
  
  clarify that the available backends are the ones this build supports
  
  plus add some formatting
  
  Reported-by: Rich Gray
  Bug: https://curl.haxx.se/mail/lib-2017-08/0119.html

- curl/multi.h: remove duplicated closing c++ brace
  
  Regression since 1328f69d53f2f2e93
  
  Fixes #1841
  Reported-by: Andrei Karas

- RELEASE-NOTES: synced with 8c33c963a

- HELP-US.md: spelling

- HELP-US.md: "How to get started helping out in the curl project"
  
  Closes #1837

Dan Fandrich (29 Aug 2017)
- asyn-thread: Fixed cleanup after OOM
  
  destroy_async_data() assumes that if the flag "done" is not set yet, the
  thread itself will clean up once the request is complete.  But if an
  error (generally OOM) occurs before the thread even has a chance to
  start, it will never get a chance to clean up and memory will be leaked.
  By clearing "done" only just before starting the thread, the correct
  cleanup sequence will happen in all cases.

Daniel Stenberg (28 Aug 2017)
- curl_global_init.3: mention curl_global_sslset(3)

Dan Fandrich (28 Aug 2017)
- unit1606: Fixed shadowed variable warning

- asyn-thread: Improved cleanup after OOM situations

- asyn-thread: Set errno to the proper value ENOMEM in OOM situation
  
  This used to be set in some configurations to EAI_MEMORY which is not a
  valid value for errno and caused Curl_strerror to fail an assertion.

Daniel Stenberg (28 Aug 2017)
- [Johannes Schindelin brought this change]

  configure: Handle "MultiSSL" specially When versioning symbols
  
  There is a mode in which libcurl is compiled with versioned symbols,
  depending on the active SSL backend.
  
  When multiple SSL backends are active, it does not make sense to favor
  one over the others, so let's not: introduce a new prefix for the case
  where multiple SSL backends are compiled into cURL.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  configure: allow setting the default SSL backend
  
  Previously, we used as default SSL backend whatever was first in the
  `available_backends` array.
  
  However, some users may want to override that default without patching
  the source code.
  
  Now they can: with the --with-default-ssl-backend=<backend> option of
  the ./configure script.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: use Curl_ssl_multi pseudo backend only when needed
  
  When only one SSL backend is configured, it is totally unnecessary to
  let multissl_init() configure the backend at runtime, we can select the
  correct backend at build time already.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  version: if built with more than one SSL backend, report all of them
  
  To discern the active one from the inactive ones, put the latter into
  parentheses.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  version: add the CURL_VERSION_MULTI_SSL feature flag
  
  This new feature flag reports When cURL was built with multiple SSL
  backends.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  metalink: allow compiling with multiple SSL backends
  
  Previously, the code assumed that at most one of the SSL backends would
  be compiled in, emulating OpenSSL's functions if the configured backend
  was not OpenSSL itself.
  
  However, now we allow building with multiple SSL backends and choosing
  one at runtime. Therefore, metalink needs to be adjusted to handle this
  scenario, too.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  docs/examples: demonstrate how to select SSL backends
  
  The newly-introduced curl_global_sslset() function deserves to be
  show-cased.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  Add a man page for curl_global_sslset()
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: introduce curl_global_sslset()
  
  Let's add a compile time safe API to select an SSL backend. This
  function needs to be called *before* curl_global_init(), and can be
  called only once.
  
  Side note: we do not explicitly test that it is called before
  curl_global_init(), but we do verify that it is not called multiple times
  (even implicitly).
  
  If SSL is used before the function was called, it will use whatever the
  CURL_SSL_BACKEND environment variable says (or default to the first
  available SSL backend), and if a subsequent call to
  curl_global_sslset() disagrees with the previous choice, it will fail
  with CURLSSLSET_TOO_LATE.
  
  The function also accepts an "avail" parameter to point to a (read-only)
  NULL-terminated list of available backends. This comes in real handy if
  an application wants to let the user choose between whatever SSL backends
  the currently available libcurl has to offer: simply call
  
          curl_global_sslset(-1, NULL, &avail);
  
  which will return CURLSSLSET_UNKNOWN_BACKEND and populate the avail
  variable to point to the relevant information to present to the user.
  
  Just like with the HTTP/2 push functions, we have to add the function
  declaration of curl_global_sslset() function to the header file
  *multi.h* because VMS and OS/400 require a stable order of functions
  declared in include/curl/*.h (where the header files are sorted
  alphabetically). This looks a bit funny, but it cannot be helped.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: refactor out essential information about the SSL backends
  
  There is information about the compiled-in SSL backends that is really
  no concern of any code other than the SSL backend itself, such as which
  function (if any) implements SHA-256 summing.
  
  And there is information that is really interesting to the user, such as
  the name, or the curl_sslbackend value.
  
  Let's factor out the latter into a publicly visible struct. This
  information will be used in the upcoming API to set the SSL backend
  globally.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: allow selecting which SSL backend to use at runtime
  
  When building software for the masses, it is sometimes not possible to
  decide for all users which SSL backend is appropriate.
  
  Git for Windows, for example,  uses cURL to perform clones, fetches and
  pushes via HTTPS, and some users strongly prefer OpenSSL, while other
  users really need to use Secure Channel because it offers
  enterprise-ready tools to manage credentials via Windows' Credential
  Store.
  
  The current Git for Windows versions use the ugly work-around of
  building libcurl once with OpenSSL support and once with Secure Channel
  support, and switching out the binaries in the installer depending on
  the user's choice.
  
  Needless to say, this is a super ugly workaround that actually only
  works in some cases: Git for Windows also comes in a portable form, and
  in a form intended for third-party applications requiring Git
  functionality, in which cases this "swap out libcurl-4.dll" simply is
  not an option.
  
  Therefore, the Git for Windows project has a vested interest in teaching
  cURL to make the SSL backend a *runtime* option.
  
  This patch makes that possible.
  
  By running ./configure with multiple --with-<backend> options, cURL will
  be built with multiple backends.
  
  For the moment, the backend can be configured using the environment
  variable CURL_SSL_BACKEND (valid values are e.g. "openssl" and
  "schannel").
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: fold the backend ID into the Curl_ssl structure
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  curl_ntlm_core: don't complain but #include OpenSSL header if needed
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: encapsulate SSL backend-specific data
  
  So far, all of the SSL backends' private data has been declared as
  part of the ssl_connect_data struct, in one big #if .. #elif .. #endif
  block.
  
  This can only work as long as the SSL backend is a compile-time option,
  something we want to change in the next commits.
  
  Therefore, let's encapsulate the exact data needed by each SSL backend
  into a private struct, and let's avoid bleeding any SSL backend-specific
  information into urldata.h. This is also necessary to allow multiple SSL
  backends to be compiled in at the same time, as e.g. OpenSSL's and
  CyaSSL's headers cannot be included in the same .c file.
  
  To avoid too many malloc() calls, we simply append the private structs
  to the connectdata struct in allocate_conn().
  
  This requires us to take extra care of alignment issues: struct fields
  often need to be aligned on certain boundaries e.g. 32-bit values need to
  be stored at addresses that divide evenly by 4 (= 32 bit / 8
  bit-per-byte).
  
  We do that by assuming that no SSL backend's private data contains any
  fields that need to be aligned on boundaries larger than `long long`
  (typically 64-bit) would need. Under this assumption, we simply add a
  dummy field of type `long long` to the `struct connectdata` struct. This
  field will never be accessed but acts as a placeholder for the four
  instances of ssl_backend_data instead. the size of each ssl_backend_data
  struct is stored in the SSL backend-specific metadata, to allow
  allocate_conn() to know how much extra space to allocate, and how to
  initialize the ssl[sockindex]->backend and proxy_ssl[sockindex]->backend
  pointers.
  
  This would appear to be a little complicated at first, but is really
  necessary to encapsulate the private data of each SSL backend correctly.
  And we need to encapsulate thusly if we ever want to allow selecting
  CyaSSL and OpenSSL at runtime, as their headers cannot be included within
  the same .c file (there are just too many conflicting definitions and
  declarations for that).
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: prepare the SSL backends for encapsulated private data
  
  At the moment, cURL's SSL backend needs to be configured at build time.
  As such, it is totally okay for them to hard-code their backend-specific
  data in the ssl_connect_data struct.
  
  In preparation for making the SSL backend a runtime option, let's make
  the access of said private data a bit more abstract so that it can be
  adjusted later in an easy manner.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  urldata.h: move SSPI-specific #include to correct location
  
  In 86b889485 (sasl_gssapi: Added GSS-API based Kerberos V5 variables,
  2014-12-03), an SSPI-specific field was added to the kerberos5data
  struct without moving the #include "curl_sspi.h" later in the same file.
  
  This broke the build when SSPI was enabled, unless Secure Channel was
  used as SSL backend, because it just so happens that Secure Channel also
  requires "curl_sspi.h" to be #included.
  
  In f4739f639 (urldata: include curl_sspi.h when Windows SSPI is enabled,
  2017-02-21), this bug was fixed incorrectly: Instead of moving the
  appropriate conditional #include, the Secure Channel-conditional part
  was now also SSPI-conditional.
  
  Fix this problem by moving the correct #include instead.
  
  This is also required for an upcoming patch that moves all the Secure
  Channel-specific stuff out of urldata.h and encapsulates it properly in
  vtls/schannel.c instead.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  urldata.h: remove support for obsolete PolarSSL version
  
  Since 5017d5ada (polarssl: now require 1.3.0+, 2014-03-17), we require
  a newer PolarSSL version. No need to keep code trying to support any
  older version.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  getinfo: access SSL internals via Curl_ssl
  
  In the ongoing endeavor to abstract out all SSL backend-specific
  functionality, this is the next step: Instead of hard-coding how the
  different SSL backends access their internal data in getinfo.c, let's
  implement backend-specific functions to do that task.
  
  This will also allow for switching SSL backends as a runtime option.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: move SSL backends' private constants out of their header files
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  axtls: use Curl_none_* versions of init() and cleanup()
  
  There are convenient no-op versions of the init/cleanup functions now,
  no need to define private ones for axTLS.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: remove obsolete declarations of SSL backend functionality
  
  These functions are all available via the Curl_ssl struct now, no need
  to declare them separately anymore.
  
  As the global declarations are removed, the corresponding function
  definitions are marked as file-local. The only two exceptions here are
  Curl_mbedtls_shutdown() and Curl_polarssl_shutdown(): only the
  declarations were removed, there are no function definitions to mark
  file-local.
  
  Please note that Curl_nss_force_init() is *still* declared globally, as
  the only SSL backend-specific function, because it was introduced
  specifically for the use case where cURL was compiled with
  `--without-ssl --with-nss`. For details, see f3b77e561 (http_ntlm: add
  support for NSS, 2010-06-27).
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  schannel: reorder functions topologically
  
  The _shutdown() function calls the _session_free() function; While this
  is not a problem now (because schannel.h declares both functions), a
  patch looming in the immediate future with make all of these functions
  file-local.
  
  So let's just move the _session_free() function's definition before it
  is called.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  axtls: reorder functions topologically
  
  The connect_finish() function (like many other functions after it) calls
  the Curl_axtls_close() function; While this is not a problem now
  (because axtls.h declares the latter function), a patch looming in the
  immediate future with make all of these functions file-local.
  
  So let's just move the Curl_axtls_close() function's definition before
  it is called.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: move the SUPPORT_HTTPS_PROXY flag into the Curl_ssl struct
  
  That will allow us to choose the SSL backend at runtime.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: convert the have_curlssl_* constants to runtime flags
  
  The entire idea of introducing the Curl_ssl struct to describe SSL
  backends is to prepare for choosing the SSL backend at runtime.
  
  To that end, convert all the #ifdef have_curlssl_* style conditionals
  to use bit flags instead.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: move sha256sum into the Curl_ssl struct
  
  The SHA-256 checksumming is also an SSL backend-specific function.
  Let's include it in the struct declaring the functionality of SSL
  backends.
  
  In contrast to MD5, there is no fall-back code. To indicate this, the
  respective entries are NULL for those backends that offer no support for
  SHA-256 checksumming.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: move md5sum into the Curl_ssl struct
  
  The MD5 summing is also an SSL backend-specific function. So let's
  include it, offering the previous fall-back code as a separate function
  now: Curl_none_md5sum(). To allow for that, the signature had to be
  changed so that an error could be returned from the implementation
  (Curl_none_md5sum() can run out of memory).
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: use the Curl_ssl struct to access all SSL backends' functionality
  
  This is the first step to unify the SSL backend handling. Now all the
  SSL backend-specific functionality is accessed via a global instance of
  the Curl_ssl struct.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: declare Curl_ssl structs for every SSL backend
  
  The idea of introducing the Curl_ssl struct was to unify how the SSL
  backends are declared and called. To this end, we now provide an
  instance of the Curl_ssl struct for each and every SSL backend.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: introduce a new struct for SSL backends
  
  This new struct is similar in nature to Curl_handler: it will define the
  functions and capabilities of all the SSL backends (where Curl_handler
  defines the functions and capabilities of protocol handlers).
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: make sure every _sha256sum()'s first arg is const
  
  This patch makes the signature of the _sha256sum() functions consistent
  among the SSL backends, in preparation for unifying the way all SSL
  backends are accessed.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: make sure all _data_pending() functions return bool
  
  This patch makes the signature of the _data_pending() functions
  consistent among the SSL backends, in preparation for unifying the way
  all SSL backends are accessed.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: make sure all _cleanup() functions return void
  
  This patch makes the signature of the _cleanup() functions consistent
  among the SSL backends, in preparation for unifying the way all SSL
  backends are accessed.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Johannes Schindelin brought this change]

  vtls: use consistent signature for _random() implementations
  
  This will make the upcoming multissl backend much easier to implement.
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- strtooff: fix build for systems with long long but no strtoll option
  
  Closes #1829
  
  Reported-by: Dan Fandrich
  Bug: https://github.com/curl/curl/pull/1758#issuecomment-324861615

- darwinssl: handle long strings in TLS certs
  
  ... as the previous fixed length 128 bytes buffer was sometimes too
  small.
  
  Fixes #1823
  Closes #1831
  
  Reported-by: Benjamin Sergeant
  Assisted-by: Bill Pyne, Ray Satiro, Nick Zitzmann

- system.h: include sys/poll.h for AIX
  
  ... to get the event/revent defines that might be used for the poll
  struct.
  
  Reported-by: Michael Smith
  Fixes #1828
  Closes #1833

Dan Fandrich (26 Aug 2017)
- tests: Make sure libtests & unittests call curl_global_cleanup()
  
  These were missed in commit c468c27b.

Jay Satiro (26 Aug 2017)
- [theantigod brought this change]

  winbuild: fix embedded manifest option
  
  Embedded manifest option didn't work due to incorrect path.
  
  Fixes https://github.com/curl/curl/issues/1832

Daniel Stenberg (25 Aug 2017)
- fuzz/Makefile.am: remove curlbuild.h leftovers

- examples/threaded-ssl: mention that this is for openssl before 1.1

- imap: use defined names for response codes
  
  When working on this code I found the previous setup a bit weird while
  using proper defines increases readability.
  
  Closes #1824

- CURLOPT_USERPWD.3: see also CURLOPT_PROXYUSERPWD

- imap: support PREAUTH
  
  It is a defined possible greeting at server startup that means the
  connection is already authenticated. See
  https://tools.ietf.org/html/rfc3501#section-7.1.4
  
  Test 846 added to verify.
  
  Fixes #1818
  Closes #1820

Jay Satiro (23 Aug 2017)
- config-tpf: define SIZEOF_LONG
  
  Recent changes that replaced CURL_SIZEOF_LONG in the source with
  SIZEOF_LONG broke builds that use the premade configuration files and
  don't have SIZEOF_LONG defined.
  
  Bug: https://github.com/curl/curl/issues/1816

Dan Fandrich (23 Aug 2017)
- test1453: Fixed <features>

Daniel Stenberg (22 Aug 2017)
- [Gisle Vanem brought this change]

  config-dos: add missing defines, SIZEOF_* and two others
  
  Bug: #1816

- curl: shorten and clean up CA cert verification error message
  
  The previous message was just too long for ordinary people and it was
  encouraging users to use `--insecure` a little too easy.
  
  Based-on-work-by: Frank Denis
  
  Closes #1810
  Closes #1817

- request-target.d: mention added in 7.55.0

Marcel Raad (22 Aug 2017)
- tool_main: turn off MinGW CRT's globbing
  
  By default, the MinGW CRT globs command-line arguments. This prevents
  getting a single asterisk into an argument as test 1299 does. Turn off
  globbing by setting the global variable _CRT_glob to 0 for MinGW.
  
  Fixes https://github.com/curl/curl/issues/1751
  Closes https://github.com/curl/curl/pull/1813

Viktor Szakats (22 Aug 2017)
- makefile.m32: add support for libidn2
  
  libidn was replaced with libidn2 last year in configure.
  Caveat: libidn2 may depend on a list of further libs.
  These can be manually specified via CURL_LDFLAG_EXTRAS.
  
  Closes https://github.com/curl/curl/pull/1815

Jay Satiro (22 Aug 2017)
- [Viktor Szakats brought this change]

  config-win32: define SIZEOF_LONG
  
  Recent changes that replaced CURL_SIZEOF_LONG in the source with
  SIZEOF_LONG broke builds that use the premade configuration files and
  don't have SIZEOF_LONG defined.
  
  Closes https://github.com/curl/curl/pull/1814

Daniel Stenberg (20 Aug 2017)
- cmake: enable picky compiler options with clang and gcc
  
  closes #1799

- curl/system.h: fix build for hppa
  
  Reported-by: John David Anglin
  Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=872502#10

- [Even Rouault brought this change]

  tftp: fix memory leak on too long filename
  
  Fixes
  
  $ valgrind --leak-check=full ~/install-curl-git/bin/curl tftp://localhost/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaz
  
  ==9752== Memcheck, a memory error detector
  ==9752== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
  ==9752== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
  ==9752== Command: /home/even/install-curl-git/bin/curl tftp://localhost/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaz
  ==9752==
  curl: (71) TFTP file name too long
  
  ==9752==
  ==9752== HEAP SUMMARY:
  ==9752== 505 bytes in 1 blocks are definitely lost in loss record 11 of 11
  ==9752==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
  ==9752==    by 0x4E61CED: Curl_urldecode (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
  ==9752==    by 0x4E75868: tftp_state_machine (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
  ==9752==    by 0x4E761B6: tftp_do (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
  ==9752==    by 0x4E711B6: multi_runsingle (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
  ==9752==    by 0x4E71D00: curl_multi_perform (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
  ==9752==    by 0x4E6950D: curl_easy_perform (in /home/even/install-curl-git/lib/libcurl.so.4.4.0)
  ==9752==    by 0x40E0B7: operate_do (in /home/even/install-curl-git/bin/curl)
  ==9752==    by 0x40E849: operate (in /home/even/install-curl-git/bin/curl)
  ==9752==    by 0x402693: main (in /home/even/install-curl-git/bin/curl)
  
  Fixes https://oss-fuzz.com/v2/testcase-detail/5232311106797568
  Credit to OSS Fuzz
  
  Closes #1808

Dan Fandrich (19 Aug 2017)
- runtests: fixed case insensitive matching of keywords
  
  Commit 5c2aac71 didn't work in the case of mixed-case keywords given on
  the command-line.

- tests: Make sure libtests call curl_global_cleanup()
  
  This ensures that global data allocations are freed so Valgrind stays
  happy. This was a problem with at least PolarSSL and mbedTLS.

Daniel Stenberg (18 Aug 2017)
- RELEASE-NOTES: synced with 8baead425

- scripts/contri*sh: use "git log --use-mailmap"

- mailmap: de-duplify some git authors

- http2_recv: return error better on fatal h2 errors
  
  Ref #1012
  Figured-out-by: Tatsuhiro Tsujikawa

- KNOWN_BUGS: HTTP test server 'connection-monitor' problems
  
  Closes #868

- curl/system.h: check for __ppc__ as well
  
  ... regression since issue #1774 (commit 10b3df10596a) since obviously
  some older gcc doesn't know __powerpc__ while some newer doesn't know
  __ppc__ ...
  
  Fixes #1797
  Closes #1798
  Reported-by: Ryan Schmidt

- [Jan Alexander Steffens (heftig) brought this change]

  http: Don't wait on CONNECT when there is no proxy
  
  Since curl 7.55.0, NetworkManager almost always failed its connectivity
  check by timeout. I bisected this to 5113ad04 (http-proxy: do the HTTP
  CONNECT process entirely non-blocking).
  
  This patch replaces !Curl_connect_complete with Curl_connect_ongoing,
  which returns false if the CONNECT state was left uninitialized and lets
  the connection continue.
  
  Closes #1803
  Fixes #1804
  
  Also-fixed-by: Gergely Nagy

- [Johannes Schindelin brought this change]

  metalink: adjust source code style
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- CURL_SIZEOF_LONG: removed, use only SIZEOF_LONG

- lib557: no longer use CURL_SIZEOF_* defines

- config-win32: define SIZEOF_CURL_OFF_T

- cmake: sizeof curl_off_t, remove unused detections

- system.h: remove all CURL_SIZEOF_* defines
  
  ... as they're not used externally and internally we check for the sizes
  already in configure etc.
  
  Closes #1767

- ftp: fix CWD when doing multicwd then nocwd on same connection
  
  Fixes #1782
  Closes #1787
  Reported-by: Peter Lamare

- CURLOPT_SSH_COMPRESSION.3: enable with 1L
  
  (leaves other values reserved for the future)

- compressed-ssh.d: "Added: 7.56.0"

- curl/system.h: checksrc compliance

Jay Satiro (17 Aug 2017)
- [Viktor Szakats brought this change]

  ssh: add the ability to enable compression (for SCP/SFTP)
  
  The required low-level logic was already available as part of
  `libssh2` (via `LIBSSH2_FLAG_COMPRESS` `libssh2_session_flag()`[1]
  option.)
  
  This patch adds the new `libcurl` option `CURLOPT_SSH_COMPRESSION`
  (boolean) and the new `curl` command-line option `--compressed-ssh`
  to request this `libssh2` feature. To have compression enabled, it
  is required that the SSH server supports a (zlib) compatible
  compression method and that `libssh2` was built with `zlib` support
  enabled.
  
  [1] https://www.libssh2.org/libssh2_session_flag.html
  
  Ref: https://github.com/curl/curl/issues/1732
  Closes https://github.com/curl/curl/pull/1735

- examples/ftpuploadresume: checksrc compliance

- [Maksim Stsepanenka brought this change]

  http_proxy: fix build error for CURL_DOES_CONVERSIONS
  
  Closes https://github.com/curl/curl/pull/1793

GitHub (16 Aug 2017)
- [Nick Zitzmann brought this change]

  configure: check for __builtin_available() availability (#1788)
  
  This change does two things:
  1. It un-breaks the build in Xcode 9.0. (Xcode 9.0 is currently
     failing trying to compile connectx() in lib/connect.c.)
  2. It finally weak-links the connectx() function, and falls back on
     connect() when run on older operating systems.

Daniel Stenberg (16 Aug 2017)
- travis: add metalink to some osx builds
  
  Closes #1790

- [Max Dymond brought this change]

  coverage: Use two coveralls commands to get lib/vtls results
  
  closes #1747

- darwinssi: fix error: variable length array used

- m4/curl-compilers.m4: use proper quotes around string, not backticks
  
  ... when setting clang version to assume 3.7
  
  Caused a lot of "integer expression expected" warnings by configure.

- [Benbuck Nason brought this change]

  cmake: remove dead code for DISABLED_THREADSAFE
  
  Closes #1786

Jay Satiro (15 Aug 2017)
- [Jakub Zakrzewski brought this change]

  curl-confopts.m4: fix --disable-threaded-resolver
  
  Closes https://github.com/curl/curl/issues/1784

Daniel Stenberg (15 Aug 2017)
- [Ryan Winograd brought this change]

  progress: Track total times following redirects
  
  Update the progress timers `t_nslookup`, `t_connect`, `t_appconnect`,
  `t_pretransfer`, and `t_starttransfer` to track the total times for
  these activities when a redirect is followed. Previously, only the times
  for the most recent request would be tracked.
  
  Related changes:
  
    - Rename `Curl_pgrsResetTimesSizes` to `Curl_pgrsResetTransferSizes`
      now that the function only resets transfer sizes and no longer
      modifies any of the progress timers.
  
    - Add a bool to the `Progress` struct that is used to prevent
      double-counting `t_starttransfer` times.
  
  Added test case 1399.
  
  Fixes #522 and Known Bug 1.8
  Closes #1602
  Reported-by: joshhe on github

- [Benbuck Nason brought this change]

  cmake: remove dead code for CURL_DISABLE_RTMP
  
  Closes #1785

Kamil Dudka (15 Aug 2017)
- zsh.pl: produce a working completion script again
  
  Commit curl-7_54_0-118-g8b2f22e changed the output format of curl --help
  to use <file> and <dir> instead of FILE and DIR, which caused zsh.pl to
  produce a broken completion script:
  
  % curl --<TAB>
  _curl:10: no such file or directory: seconds
  
  Closes #1779

Daniel Stenberg (15 Aug 2017)
- curlver: toward 7.56.0?

- RELEASE-NOTES: synced with 91c46dc44

- test1449: FTP download range with an too large size

- strtoofft: reduce integer overflow risks globally
  
  ... make sure we bail out on overflows.
  
  Reported-by: Brian Carpenter
  Closes #1758

- travis: build the examples too
  
  to make sure they keep building warning-free
  
  Closes #1777

- runtests: match keywords case insensitively

- examples/ftpuploadresume.c: use portable code
  
  ... converted from the MS specific _snscanf()

Version 7.55.1 (13 Aug 2017)

Daniel Stenberg (13 Aug 2017)
- RELEASE-NOTES/THANKS: curl 7.55.1 release time

- gitignore: ignore .xz now instead of .lzma

- [Sergei Nikulov brought this change]

  cmake: Threads detection update. ref: #1702
  
  Closes #1719

- ipv6_scope: support unique local addresses
  
  Fixes #1764
  Closes #1773
  Reported-by: James Slaughter

- [Alex Potapenko brought this change]

  curl/system.h: GCC doesn't define __ppc__ on PowerPC, uses __powerpc__
  
  Closes #1774

- test1448: verify redirect to IDN using URL
  
  Closes #1772

- [Salah-Eddin Shaban brought this change]

  redirect: skip URL encoding for host names
  
  This fixes redirects to IDN URLs
  
  Fixes #1441
  Closes #1762
  Reported by: David Lord

- test2032: mark as flaky (again)

- travis: test cmake build on tarball too
  
  Could've prevented #1755

- [Simon Warta brought this change]

  cmake: allow user to override CMAKE_DEBUG_POSTFIX
  
  Closes #1763

- connect-to.d: better language

- connect-to.d: clarified

- bagder/Curl_tvdiff_us: fix the math
  
  Regression since adef394ac5 (released in 7.55.0)
  
  Reported-by: Han Qiao
  Fixes #1769
  Closes #1771

- curl/system.h: add Oracle Solaris Studio
  
  Fixes #1752

- [Alessandro Ghedini brought this change]

  docs: fix typo funtion -> function
  
  Closes #1770

Alessandro Ghedini (12 Aug 2017)
- docs: fix grammar in CURL_SSLVERSION_MAX_DEFAULT description

- docs: fix typo stuct -> struct

Dan Fandrich (12 Aug 2017)
- test1447: require a curl with http support

Daniel Stenberg (11 Aug 2017)
- [Thomas Petazzoni brought this change]

  curl/system.h: support more architectures
  
  The long list of architectures in include/curl/system.h is annoying to
  maintain, and needs to be extended for each and every architecture to
  support.
  
  Instead, let's rely on the __SIZEOF_LONG__ define of the gcc compiler
  (we are in the GNUC condition anyway), which tells us if long is 4
  bytes or 8 bytes.
  
  This fixes the build of libcurl 7.55.0 on architectures such as
  OpenRISC or ARC.
  
  Closes #1766
  
  Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

- test2033: this went flaky again
  
  Suspicion: when we enabled the threaded resolver by default.

- test1447: verifies the parse proxy fix in 6e0e152ce5c

- [Even Rouault brought this change]

  parse_proxy(): fix memory leak in case of invalid proxy server name
  
  Fixes the below leak:
  
  $ valgrind --leak-check=full ~/install-curl-git/bin/curl --proxy "http://a:b@/x" http://127.0.0.1
  curl: (5) Couldn't resolve proxy name
  ==5048==
  ==5048== HEAP SUMMARY:
  ==5048==     in use at exit: 532 bytes in 12 blocks
  ==5048==   total heap usage: 5,288 allocs, 5,276 frees, 445,271 bytes allocated
  ==5048==
  ==5048== 2 bytes in 1 blocks are definitely lost in loss record 1 of 12
  ==5048==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
  ==5048==    by 0x4E6CB79: parse_login_details (url.c:5614)
  ==5048==    by 0x4E6BA82: parse_proxy (url.c:5091)
  ==5048==    by 0x4E6C46D: create_conn_helper_init_proxy (url.c:5346)
  ==5048==    by 0x4E6EA18: create_conn (url.c:6498)
  ==5048==    by 0x4E6F9B4: Curl_connect (url.c:6967)
  ==5048==    by 0x4E86D05: multi_runsingle (multi.c:1436)
  ==5048==    by 0x4E88432: curl_multi_perform (multi.c:2160)
  ==5048==    by 0x4E7C515: easy_transfer (easy.c:708)
  ==5048==    by 0x4E7C74A: easy_perform (easy.c:794)
  ==5048==    by 0x4E7C7B1: curl_easy_perform (easy.c:813)
  ==5048==    by 0x414025: operate_do (tool_operate.c:1563)
  ==5048==
  ==5048== 2 bytes in 1 blocks are definitely lost in loss record 2 of 12
  ==5048==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
  ==5048==    by 0x4E6CBB6: parse_login_details (url.c:5621)
  ==5048==    by 0x4E6BA82: parse_proxy (url.c:5091)
  ==5048==    by 0x4E6C46D: create_conn_helper_init_proxy (url.c:5346)
  ==5048==    by 0x4E6EA18: create_conn (url.c:6498)
  ==5048==    by 0x4E6F9B4: Curl_connect (url.c:6967)
  ==5048==    by 0x4E86D05: multi_runsingle (multi.c:1436)
  ==5048==    by 0x4E88432: curl_multi_perform (multi.c:2160)
  ==5048==    by 0x4E7C515: easy_transfer (easy.c:708)
  ==5048==    by 0x4E7C74A: easy_perform (easy.c:794)
  ==5048==    by 0x4E7C7B1: curl_easy_perform (easy.c:813)
  ==5048==    by 0x414025: operate_do (tool_operate.c:1563)
  
  Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2984
  Credit to OSS Fuzz for discovery
  
  Closes #1761

- RELEASE-NOTES: synced with 37f2195a9

- curlver: bump to 7.55.1

- openssl: fix "error: this statement may fall through"
  
  A gcc7 warning.

- [David Benjamin brought this change]

  openssl: remove CONST_ASN1_BIT_STRING.
  
  Just making the pointer as const works for the pre-1.1.0 path too.
  
  Closes #1759

- maketgz: remove old *.dist files before making the tarball
  
  To avoid "old crap" unintentionally getting shipped.
  
  Bug: https://curl.haxx.se/mail/lib-2017-08/0050.html
  Reported-by: Christian Weisgerber

Jay Satiro (10 Aug 2017)
- mkhelp.pl: allow executing this script directly
  
  - Enable execute permission (chmod +x)
  
  - Change interpreter to /usr/bin/env perl
  
  Ref: https://github.com/curl/curl/issues/1743

Daniel Stenberg (10 Aug 2017)
- configure: use the threaded resolver backend by default if possible
  
  Closes #1647

- cmake: move cmake_uninstall.cmake to CMake/
  
  Closes #1756

- metalink: fix error: ‘*’ in boolean context, suggest ‘&&’ instead

- dist: fix the cmake build by shipping cmake_uninstall.cmake.in too
  
  Fixes #1755

- travis: verify "make install"
  
  Help-by: Jay Satiro
  Closes #1753

Marcel Raad (10 Aug 2017)
- build: check out *.sln files with Windows line endings
  
  Visual Studio doesn't like LF line endings in solution files and always
  converts them to CRLF when doing changes to the solution. Notably, this
  affects the solutions in the release archive.
  
  Closes https://github.com/curl/curl/pull/1746

- gitignore: ignore top-level .vs folder
  
  This folder is generated when using the CMake build system from within
  Visual Studio.
  
  Closes https://github.com/curl/curl/pull/1746

Jay Satiro (10 Aug 2017)
- digest_sspi: Don't reuse context if the user/passwd has changed
  
  Bug: https://github.com/curl/curl/issues/1685
  Reported-by: paulharris@users.noreply.github.com
  
  Assisted-by: Isaac Boukris
  
  Closes https://github.com/curl/curl/pull/1742

Daniel Stenberg (9 Aug 2017)
- [Adam Sampson brought this change]

  dist: Add dictserver.py/negtelnetserver.py to EXTRA_DIST
  
  These weren't included in the 7.55.0 release, but are required in order
  to run the full test suite.
  
  Closes #1744

- [Adam Sampson brought this change]

  curl: do bounds check using a double comparison
  
  The fix for this in 8661a0aacc01492e0436275ff36a21734f2541bb wasn't
  complete: if the parsed number in num is larger than will fit in a long,
  the conversion is undefined behaviour (causing test1427 to fail for me
  on IA32 with GCC 7.1, although it passes on AMD64 and ARMv7).  Getting
  rid of the cast means the comparison will be done using doubles.
  
  It might make more sense for the max argument to also be a double...
  
  Fixes #1750
  Closes #1749

- make install: add 8 missing man pages to the installation

- build: fix 'make install' with configure, install docs/libcurl/* too
  
  Broken since d24838d4da9faa
  
  Reported-by: Bernard Spil

Version 7.55.0 (9 Aug 2017)

Daniel Stenberg (9 Aug 2017)
- RELEASE-NOTES: curl 7.55.0

- THANKS: 20 new contributors in 7.55.0

- [Viktor Szakats brought this change]

  docs/comments: Update to secure URL versions
  
  Closes #1741

- configure: fix recv/send/select detection on Android
  
  ... since they now provide several functions as
  __attribute__((overloadable)), the argument detection logic need
  updates.
  
  Patched-by: destman at github
  
  Fixes #1738
  Closes #1739

Marcel Raad (8 Aug 2017)
- ax_code_coverage.m4: update to latest version
  
  This updates the script to aad5ad5fedb306b39f901a899b7bd305b66c418d
  from August 01, 2017. Notably, this removes the lconv version whitelist.
  
  Closes https://github.com/curl/curl/pull/1716

Daniel Stenberg (7 Aug 2017)
- test1427: verify command line parser integer overflow detection

- curl: detect and bail out early on parameter integer overflows
  
  Make the number parser aware of the maximum limit curl accepts for a
  value and return an error immediately if larger, instead of running an
  integer overflow later.
  
  Fixes #1730
  Closes #1736

- glob: do not continue parsing after a strtoul() overflow range
  
  Added test 1289 to verify.
  
  CVE-2017-1000101
  
  Bug: https://curl.haxx.se/docs/adv_20170809A.html
  Reported-by: Brian Carpenter

- tftp: reject file name lengths that don't fit
  
  ... and thereby avoid telling send() to send off more bytes than the
  size of the buffer!
  
  CVE-2017-1000100
  
  Bug: https://curl.haxx.se/docs/adv_20170809B.html
  Reported-by: Even Rouault
  
  Credit to OSS-Fuzz for the discovery

- [Even Rouault brought this change]

  file: output the correct buffer to the user
  
  Regression brought by 7c312f84ea930d8 (April 2017)
  
  CVE-2017-1000099
  
  Bug: https://curl.haxx.se/docs/adv_20170809C.html
  
  Credit to OSS-Fuzz for the discovery

- easy_events: make event data static
  
  First: this function is only used in debug-builds and not in
  release/real builds. It is used to drive tests using the event-based
  API.
  
  A pointer to the local struct is passed to CURLMOPT_TIMERDATA, but the
  CURLMOPT_TIMERFUNCTION calback can in fact be called even after this
  funtion returns, namely when curl_multi_remove_handle() is called.
  
  Reported-by: Brian Carpenter

- getparameter: avoid returning uninitialized 'usedarg'
  
  Fixes #1728

Marcel Raad (5 Aug 2017)
- [Isaac Boukris brought this change]

  gssapi: fix memory leak of output token in multi round context
  
  When multiple rounds are needed to establish a security context
  (usually ntlm), we overwrite old token with a new one without free.
  Found by proposed gss tests using stub a gss implementation (by
  valgrind error), though I have confirmed the leak with a real
  gssapi implementation as well.
  
  Closes https://github.com/curl/curl/pull/1733

- darwinssl: fix compiler warning
  
  clang complains:
  vtls/darwinssl.c:40:8: error: extra tokens at end of #endif directive
  [-Werror,-Wextra-tokens]
  
  This breaks the darwinssl build on Travis. Fix it by making this token
  a comment.
  
  Closes https://github.com/curl/curl/pull/1734

- CMake: fix CURL_WERROR for MSVC
  
  When using CURL_WERROR in MSVC builds, the debug flags were overridden
  by the release flags and /WX got added twice in debug mode.
  
  Closes https://github.com/curl/curl/pull/1715

Daniel Stenberg (4 Aug 2017)
- RELEASE-NOTES: synced with 561e9217c

- test1010: verify that #1718 is fixed
  
  ... by doing two transfers in nocwd mode and check that there's no
  superfluous CWD command.

- FTP: skip unnecessary CWD when in nocwd mode
  
  ... when reusing a connection. If it didn't do any CWD previously.
  
  Fixes #1718

Marcel Raad (4 Aug 2017)
- travis: explicitly specify dist
  
  This makes the builds more reproducible as travis is currently rolling
  out trusty as default dist [1]. Specifically, this avoids coverage
  check failures when trusty is used as seen in [2] until we figure out
  what's wrong.
  
  [1] https://blog.travis-ci.com/2017-07-11-trusty-as-default-linux-is-coming
  [2] https://github.com/curl/curl/pull/1692
  
  Closes https://github.com/curl/curl/pull/1725

Daniel Stenberg (4 Aug 2017)
- travis: BUILD_TYPE => T
  
  (to make the full line appear nicer on travis web UI)

- travis: add osx build with darwinssl
  
  Closes #1706

- darwin: silence compiler warnings
  
  With a clang pragma and three type fixes
  
  Fixes #1722

- BUILD.WINDOWS: mention buildconf.bat for builds off git

- darwinssl: fix curlssl_sha256sum() compiler warnings on first argument

- test130: verify comments in .netrc

- [Gisle Vanem brought this change]

  netrc: skip lines starting with '#'
  
  Bug: https://curl.haxx.se/mail/lib-2017-08/0008.html

Marcel Raad (3 Aug 2017)
- CMake: set MSVC warning level to 4
  
  The MSVC warning level defaults to 3 in CMake. Change it to 4, which is
  consistent with the Visual Studio and NMake builds. Disable level 4
  warning C4127 for the library and additionally C4306 for the test
  servers to get a clean CURL_WERROR build as that warning is raised in
  some macros in older Visual Studio versions.
  
  Ref: https://github.com/curl/curl/pull/1667#issuecomment-314082794
  Closes https://github.com/curl/curl/pull/1711

Daniel Stenberg (2 Aug 2017)
- CURLOPT_NETRC.3: fix typo in 7e48aa386156f9c2
  
  Reported-by: Viktor Szakats

- CURLOPT_NETRC.3: mention the file name on windows
  
  ... and CURLOPT_NETRC_FILE(3).

- travis: build osx with libressl too

- travis: build osx with openssl too

- tests/server/util: fix curltime mistake from 4dee50b9c80f9

Marcel Raad (1 Aug 2017)
- curl_threads: fix MSVC compiler warning
  
  Use LongToHandle to convert from long to HANDLE in the Win32
  implementation.
  This should fix the following warning when compiling with
  MSVC 11 (2012) in 64-bit mode:
  lib\curl_threads.c(113): warning C4306:
  'type cast' : conversion from 'long' to 'HANDLE' of greater size
  
  Closes https://github.com/curl/curl/pull/1717

Daniel Stenberg (1 Aug 2017)
- BUGS: improved phrasing about security bugs
  
  Reported-by: Max Dymond

- BUGS: clarify how to report security related bugs

- [Brad Spencer brought this change]

  multi: fix request timer management
  
  There are some bugs in how timers are managed for a single easy handle
  that causes the wrong "next timeout" value to be reported to the
  application when a new minimum needs to be recomputed and that new
  minimum should be an existing timer that isn't currently set for the
  easy handle.  When the application drives a set of easy handles via the
  `curl_multi_socket_action()` API (for example), it gets told to wait the
  wrong amount of time before the next call, which causes requests to
  linger for a long time (or, it is my guess, possibly forever).
  
  Bug: https://curl.haxx.se/mail/lib-2017-07/0033.html

Jay Satiro (1 Aug 2017)
- curl_setup: Define CURL_NO_OLDIES for building libcurl
  
  .. to catch accidental use of deprecated error codes.
  
  Ref: https://github.com/curl/curl/issues/1688#issuecomment-316764237

Daniel Stenberg (1 Aug 2017)
- [Jeremy Tan brought this change]

  configure: fix the check for IdnToUnicode
  
  Fixes #1669
  Closes #1713

- http: fix response code parser to avoid integer overflow
  
  test 1429 and 1433 were updated to work with the stricter HTTP status line
  parser.
  
  Closes #1714
  Reported-by: Brian Carpenter

Jay Satiro (31 Jul 2017)
- [Dwarakanath Yadavalli brought this change]

  libcurl: Stop using error codes defined under CURL_NO_OLDIES
  
  Fixes https://github.com/curl/curl/issues/1688
  Closes https://github.com/curl/curl/pull/1712

- include.d: clarify --include is only for response headers
  
  Follow-up to 171f8de and de6de94.
  
  Bug: https://github.com/curl/curl/commit/de6de94#commitcomment-23370851
  Reported-by: Daniel Stenberg

Daniel Stenberg (30 Jul 2017)
- [jasjuang brought this change]

  cmake: support make uninstall
  
  Closes #1674

- RELEASE-NOTES: synced with 001701c47

Marcel Raad (29 Jul 2017)
- AppVeyor: now really use CURL_WERROR
  
  It was misspelled as CURL_ERROR in commit
  2d86e8d1286e0fbe3d811e2e87fa0b5e53722db4.
  
  Closes https://github.com/curl/curl/pull/1686

Jay Satiro (29 Jul 2017)
- tool_help: clarify --include is only for response headers
  
  Follow-up to 171f8de.
  
  Ref: https://github.com/curl/curl/issues/1704

- splay: fix signed/unsigned mismatch warning
  
  Follow-up to 4dee50b.
  
  Ref: https://github.com/curl/curl/pull/1693

Daniel Stenberg (28 Jul 2017)
- include.d: clarify that it concerns the response headers
  
  Reported-by: olesteban at github
  Fixes #1704

- [Johannes Schindelin brought this change]

  curl_rtmp: fix a compiler warning
  
  The headers of librtmp declare the socket as `int`, and on Windows, that
  disagrees with curl_socket_t.
  
  Bug: #1652
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- test1323: verify curlx_tvdiff

- timeval: struct curltime is a struct timeval replacement
  
  ... to make all libcurl internals able to use the same data types for
  the struct members. The timeval struct differs subtly on several
  platforms so it makes it cumbersome to use everywhere.
  
  Ref: #1652
  Closes #1693

- darwinssl: fix variable type mistake (regression)
  
  ... which made --tlsv1.2 not work because it would blank the max tls
  version variable.
  
  Reported-by: Nick Miyake
  Bug: #1703

- multi: mention integer overflow risk if using > 500 million sockets
  
  Reported-by: ovidiu-benea@users.noreply.github.com
  
  Closes #1675
  Closes #1683

- checksrc: escape open brace in regex
  
  ... to silence warning.

Kamil Dudka (20 Jul 2017)
- nss: fix a possible use-after-free in SelectClientCert()
  
  ... causing a SIGSEGV in showit() in case the handle used to initiate
  the connection has already been freed.
  
  This commit fixes a bug introduced in curl-7_19_5-204-g5f0cae803.
  
  Reported-by: Rob Sanders
  Bug: https://bugzilla.redhat.com/1436158

- nss: unify the coding style of nss_send() and nss_recv()
  
  No changes in behavior intended by this commit.

Marcel Raad (18 Jul 2017)
- tests/server/resolve.c: fix deprecation warning
  
  MSVC warns that gethostbyname is deprecated. Always use getaddrinfo
  instead to fix this when IPv6 is enabled, also for IPv4 resolves. This
  is also consistent with what libcurl does.
  
  Closes https://github.com/curl/curl/pull/1682

Jay Satiro (17 Jul 2017)
- darwinssl: fix pinnedpubkey build error
  
  - s/SessionHandle/Curl_easy/
  
  Bug: https://github.com/curl/curl/commit/eb16305#commitcomment-23035670
  Reported-by: Gisle Vanem

Marcel Raad (16 Jul 2017)
- rtspd: fix GCC warning after MSVC warning fix
  
  Older GCC warns:
  /tests/server/rtspd.c:1194:10: warning: missing braces around
  initializer [-Wmissing-braces]
  
  Fix this by using memset instead of an initializer.

- libtest: fix MSVC warning C4706
  
  With warning level 4, MSVC warns about assignments within conditional
  expressions. Change the while loop to a do-while loop to fix this. This
  change is also consistent with CODE_STYLE.md.

- sockfilt: suppress conversion warning with explicit cast
  
  MSVC warns when implicitly casting -1 to unsigned long.

- rtspd: fix MSVC level 4 warning
  
  warning C4701: potentially uninitialized local variable 'req' used

- winbuild: re-enable warning C4127 for curl tool
  
  Disabled in cda19a345f6970e22fe8b7a808aeb8f086a21eac. It only needs to
  be disabled for libcurl.

- winbuild: build with warning level 4
  
  This is consistent with 7bc64561a2e63ca93e4b0b31d350773ba80955c2, which
  changed the warning level from 3 to 4 for the Visual Studio project
  files. But disable the level 4 warning C4127 "conditional expression is
  constant", as that one is issued by older versions of the Windows SDK
  as well as curl itself under some circumstances.
  
  Closes https://github.com/curl/curl/pull/1667

Jay Satiro (12 Jul 2017)
- [Max Dymond brought this change]

  travis: install libidn2
  
  Install libidn2 to increase test coverage (IDN tests)
  
  Closes https://github.com/curl/curl/pull/1673

Marcel Raad (12 Jul 2017)
- travis: enable warnings also in release mode
  
  ... to get warnings also on Linux/GCC and OSX/clang.
  
  Closes https://github.com/curl/curl/pull/1666

Daniel Stenberg (12 Jul 2017)
- [Max Dymond brought this change]

  travis: install libssh2
  
  Install libssh2 to increase test coverage (SFTP, SCP)

Marcel Raad (12 Jul 2017)
- system.h: include winsock2.h before windows.h
  
  ... to avoid compiler warnings if the user doesn't want
  WIN32_LEAN_AND_MEAN.

- build: remove WIN32_LEAN_AND_MEAN from individual build systems
  
  It's defined for all build systems in curl_setup.h since commit
  beb08481d01a07a8b10938b1078a5e298b1c2912. This caused macro
  redefinition warnings in the configure builds.
  
  Closes https://github.com/curl/curl/pull/1677

Jay Satiro (11 Jul 2017)
- ISSUE_TEMPLATE: Add a comment not to file security issues on github

Marcel Raad (11 Jul 2017)
- curl_setup: always define WIN32_LEAN_AND_MEAN on Windows
  
  Make sure to always define WIN32_LEAN_AND_MEAN before including any
  Windows headers to avoid pulling in unnecessary headers. This avoids
  unnecessary macro clashes and compiler warnings.
  
  Ref: https://github.com/curl/curl/issues/1562
  Closes https://github.com/curl/curl/pull/1672

Jay Satiro (11 Jul 2017)
- strerror: Preserve Windows error code in some functions
  
  This is a follow-up to af02162 which removed (SET_)ERRNO macros. That
  commit was an earlier draft that I committed by mistake, which was then
  remedied by a5834e5 and e909de6, and now this commit. With this commit
  there is now no difference between the current code and the changes that
  were approved in the final draft.
  
  Thanks-to: Max Dymond, Marcel Raad, Daniel Stenberg, Gisle Vanem
  Ref: https://github.com/curl/curl/pull/1589

Marcel Raad (10 Jul 2017)
- [Max Dymond brought this change]

  tests: Fix up issues with errno in test files
  
  Closes https://github.com/curl/curl/pull/1671

Daniel Stenberg (10 Jul 2017)
- errno: fix non-windows builds after af0216251b94e7

- [Ryan Winograd brought this change]

  make: fix docs build on OpenBSD
  
  Ref: #1591

Marcel Raad (10 Jul 2017)
- ldap: fix MinGW compiler warning
  
  ldap_bind_s is marked as deprecated in w32api's winldap.h shipping with
  the latest original MinGW, resulting in compiler warnings since commit
  f0fe66f13c93d3d0af45d9fb1231c9164e0f9dc8. Fix this for the non-SSPI
  case by using ldap_simple_bind_s again instead of ldap_bind_s with
  LDAP_AUTH_SIMPLE.
  
  Closes https://github.com/curl/curl/pull/1664

- curl-compilers.m4: disable warning spam with Cygwin's clang
  
  When building with Cygwin or MinGW, libtool uses a wrapper executable
  instead of a wrapper script [1], which is written in C and throws
  missing-variable-declarations warnings. Don't enable these warnings on
  Cygwin and MinGW in order to avoid warnings for every executable built,
  which spams the test suite output when using Cygwin's clang.
  
  [1] https://www.gnu.org/software/libtool/manual/html_node/Wrapper-executables.html
  
  Closes https://github.com/curl/curl/pull/1665

Jay Satiro (10 Jul 2017)
- curl_setup_once: Remove ERRNO/SET_ERRNO macros
  
  Prior to this change (SET_)ERRNO mapped to GetLastError/SetLastError
  for Win32 and regular errno otherwise.
  
  I reviewed the code and found no justifiable reason for conflating errno
  on WIN32 with GetLastError/SetLastError. All Win32 CRTs support errno,
  and any Win32 multithreaded CRT supports thread-local errno.
  
  Fixes https://github.com/curl/curl/issues/895
  Closes https://github.com/curl/curl/pull/1589

- tool_getparam: fix potentially uninitialized err

Marcel Raad (9 Jul 2017)
- smb: rename variable to fix shadowing warning
  
  GCC 4.6.3 on travis complains:
  smb.c: In function ‘get_posix_time’:
  smb.c:725:13: error: declaration of ‘time’ shadows a global declaration
  [-Werror=shadow]
  
  Fix this by renaming the variable.

- tool_cb_wrt: fix variable shadowing warning
  
  GCC 4.4 complains:
  tool_cb_wrt.c:81: error: declaration of ‘isatty’ shadows a global
  declaration
  /usr/include/unistd.h:782: error: shadowed declaration is here
  
  Fix this by renaming the variable.
  
  Closes https://github.com/curl/curl/pull/1661

Daniel Stenberg (8 Jul 2017)
- RELEASE-NOTES: synced with be2c999b8

- travis: install stunnel

- valgrind.supp: supress OpenSSL false positive seen on travis

- travis: detect and use valgrind for normal builds
  
  Closes #1653

- travis: add SMB, DICT, TELNET torture to coverage test

- [Paul Harris brought this change]

  cmake: offer CMAKE_DEBUG_POSTFIX when building with MSVC
  
  Removes BUILD_RELEASE_DEBUG_DIRS since it wasn't used anywhere.
  
  Closes #1649

- CURLOPT_POSTFIELDS.3: explain the 100-continue magic better

- [Max Dymond brought this change]

  test1452: add telnet negotiation
  
  Add a basic telnet server for negotiating some telnet options before
  echoing back any data that's sent to it.
  
  Closes #1645

- travis: do more tests in the coverage run
  
  I added a selection of torture and event tests that run "fast enough"

- curl_easy_escape.3: mention the (lack of) encoding
  
  Fixes #1612
  Reported-by: Jeroen Ooms

- [Gisle Vanem brought this change]

  memdebug: don't setbuf() if the file open failed
  
  Bug: https://github.com/curl/curl/issues/828#issuecomment-313475151

- appveyor: enable CURL_WERROR on all builds

- cmake: add CURL_WERROR for enabling "warning as errors"

- [Hannes Magnusson brought this change]

  cmake: remove spurious "-l" from linker flags
  
  Fixes #1552

- test506: skip if threaded-resolver

- runtests: support "threaded-resolver" as a feature
  
  ... to let tests require it or skip if present

- asyn-thread.c: fix unused variable warnings on macOS

- http: s/TINY_INITIAL_POST_SIZE/EXPECT_100_THRESHOLD
  
  Make the name reflect its use better, and add a short comment describing
  what it's for.

- cmake: if inet_pton is used, bump _WIN32_WINNT
  
  ... and make sure inet_pton is always checked for when *not* using Windows,
  which is a regression from 4fc6ebe18.
  
  Idea-by: Sergei Nikulov

- select.h: avoid macro redefinition harder
  
  ... by checking the POLLIN define, as the header file checks don't work
  on Windows.

- inet_pton: fix include on windows to get prototype
  
  inet_pton() exists on Windows and gets used by our cmake builds. Make
  sure the correct header file is included to avoid compiler warnings.
  
  Closes #1639

- TODO: 1.10 auto-detect proxy
  
  Closes #1572

- TODO: HTTP proxy CONNECT is non-blocking now

- cmake: fix send/recv argument scanner for windows
  
  ... by simply trying the Windows argument types first.
  
  Fixes #1640

- RELEASE-NOTES: synced with 596cfb6c0

- [Gisle Vanem brought this change]

  smb: add support for CURLOPT_FILETIME
  
  Bug: https://curl.haxx.se/mail/lib-2017-07/0005.html
  
  Closes #1643

- travis: install nghttp2 on linux builds
  
  Closes #1642

- [Gisle Vanem brought this change]

  smb: fix build for djgpp/MSDOS
  
  bug: https://curl.haxx.se/mail/lib-2017-07/0005.html

- configure: try ldap/lber in reversed order first
  
  When scanning for which LDAP libraries to use, try the -lldap -llber
  combination before the reversed order since it has a greater chance of
  working when linking with libcurl statically.
  
  Fixes #1619
  Closes #1634
  Reported-by: David E. Narváez

- configure: remove checks for 5 functions never used
  
  fork, getprotobyname, inet_addr, perror, uname
  
  closes #1638

- dist: add SMB python deps into the tarball

- [Max Dymond brought this change]

  test1451: add SMB support to the testbed
  
  Add test 1451 which does some very basic SMB testing using the impacket
  SMB server.
  
  Closes #1630

- [Max Dymond brought this change]

  test: add impacket for SMB testing
  
  Import impacket 0.9.15 for use in SMB testing. This was generated by
  doing "pip2.7 install -t . impacket"
  
  Unnecessary files for current testing were deleted.

- travis.yml: use --enable-werror on debug builds
  
  ... to better detect and fault on compiler warnings/errors
  
  Closes #1637

- tool_sleep: typecast to avoid macos compiler warning
  
  tool_sleep.c:54:24: error: implicit conversion loses integer precision:
  'long' to '__darwin_suseconds_t' (aka 'int')
  [-Werror,-Wshorten-64-to-32]

- [Martin Kepplinger brought this change]

  timeval.c: Use long long constant type for timeval assignment
  
  On a 64 bit host, sparse says:
  
  timeval.c:148:15: warning: constant 0x7fffffffffffffff is so big it is long
  timeval.c:149:12: warning: constant 0x7fffffffffffffff is so big it is long
  
  so let's use long long constant types in order to prevent undesired overflow
  failures.
  
  Bug: https://curl.haxx.se/mail/lib-2017-07/0003.html
  
  Closes #1636
  
  Signed-off-by: Martin Kepplinger <martink@posteo.de>

- url: make the original string get used on subsequent transfers
  
  ... since CURLOPT_URL should follow the same rules as other options:
  they remain set until changed or cleared.
  
  Added test 1551 to verify.
  
  Fixes #1631
  Closes #1632
  Reported-by: Pavel Rochnyak

- [Johannes Schindelin brought this change]

  gtls: fix build when sizeof(long) < sizeof(void *)
  
  - Change gnutls pointer/int macros to pointer/curl_socket_t.
    Prior to this change they used long type as well.
  
  The size of the `long` data type can be shorter than that of pointer
  types. This is the case most notably on Windows.
  
  If C99 were acceptable, we could simply use `intptr_t` here. But we
  want to retain C89 compatibility.
  
  Simply use the trick of performing pointer arithmetic with the NULL
  pointer: to convert an integer `i` to a pointer, simply take the
  address of the `i`th element of a hypothetical character array
  starting at address NULL. To convert back, simply cast the pointer
  difference.
  
  Thanks to Jay Satiro for the initial modification to use curl_socket_t
  instead of int/long.
  
  Closes #1617
  
  Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

- [Ryan Winograd brought this change]

  unit1399: fix integer overflow
  
  Bug: #1616
  Closes #1633

- [Per Malmberg brought this change]

  cmake: Added compatibility options for older Windows versions
  
  CURL_STATIC_CRT and ENABLE_INET_PTON
  
  Closes #1621

- unit1399: add logging to time comparison
  
  ... to enable tracking down why autobuilds fail on this
  
  Bug: #1616

- make: build the docs subdir only from within src
  
  ... and don't build at all in include
  
  Prompted-by-work-by: Simon Warta
  Ref: #1590
  Closes #1591

- [Max Dymond brought this change]

  test1450: fix up DICT server in torture mode
  
  As per https://github.com/curl/curl/pull/1615, the DICT server is a
  little spammy in torture mode due to the sockets being torn down
  unexpectedly. Fix this by adding some error handling to the handling
  function.
  
  Closes #1629

- [Max Dymond brought this change]

  test1450: add simple testing for DICT
  
  Add a new server which provides a DICT interface. This is intended to
  begin coverage testing for lib/dict.c
  
  Closes #1615

- [Dan Fandrich brought this change]

  test1521: fix out-of-tree builds, broken with 467da3af
  
  The test.h file is no longer in the same directory as the source file,
  so that directory needs to be added to the include path.
  
  Fixes #1627
  Closes #1628

- [Max Dymond brought this change]

  http2: handle PING frames
  
  Add a connection check function to HTTP2 based off RTSP. This causes
  PINGs to be handled the next time the connection is reused.
  
  Closes #1521

- [Max Dymond brought this change]

  handler: refactor connection checking
  
  Add a new type of callback to Curl_handler which performs checks on
  the connection. Alter RTSP so that it uses this callback to do its
  own check on connection health.

- [dmitrykos brought this change]

  openssl: improve fallback seed of PRNG with a time based hash
  
  Fixes #1620

- [Ryan Winograd brought this change]

  progress: prevent resetting t_starttransfer
  
  Prevent `Curl_pgrsTime` from modifying `t_starttransfer` when invoked
  with `TIMER_STARTTRANSFER` more than once during a single request.
  
  When a redirect occurs, this is considered a new request and
  `t_starttransfer` can be updated to reflect the `t_starttransfer` time
  of the redirect request.
  
  Closes #1616
  
  Bug: https://github.com/curl/curl/pull/1602#issuecomment-310267370

- curl_strequal.3: fix typo in SYNOPSIS
  
  Reported-by: Jesse Chisholm
  
  Fixes #1623

- RELEASE-NOTES: synced with ce2c3ebda

Kamil Dudka (28 Jun 2017)
- curl --socks5-{basic,gssapi}: control socks5 auth
  
  Closes https://github.com/curl/curl/pull/1454

- CURLOPT_SOCKS5_AUTH: allowed methods for SOCKS5 proxy auth
  
  If libcurl was built with GSS-API support, it unconditionally advertised
  GSS-API authentication while connecting to a SOCKS5 proxy.  This caused
  problems in environments with improperly configured Kerberos: a stock
  libcurl failed to connect, despite libcurl built without GSS-API
  connected fine using username and password.
  
  This commit introduces the CURLOPT_SOCKS5_AUTH option to control the
  allowed methods for SOCKS5 authentication at run time.
  
  Note that a new option was preferred over reusing CURLOPT_PROXYAUTH
  for compatibility reasons because the set of authentication methods
  allowed by default was different for HTTP and SOCKS5 proxies.
  
  Bug: https://curl.haxx.se/mail/lib-2017-01/0005.html
  Closes https://github.com/curl/curl/pull/1454

- socks: deduplicate the code for auth request

- socks: use proxy_user instead of proxy_name
  
  ... to make it obvious what the data is used for

Daniel Stenberg (27 Jun 2017)
- libtest/make: generate lib1521.c
  
  ... instead of having the generated code checked in. This saves space in
  the tarball but primarily automatically adapts to newly added options.
  
  Closes #1614

Jay Satiro (26 Jun 2017)
- tool_getparam: fix memory leak on test 1147 OOM (torture tests)
  
  Bug: https://github.com/curl/curl/pull/1486#issuecomment-310926872
  Reported-by: Dan Fandrich

Dan Fandrich (25 Jun 2017)
- test1537: fixed memory leak on OOM

Marcel Raad (25 Jun 2017)
- test1521: fix compiler warnings
  
  The integer literal 3123123123 doesn't fit into a 32-bit signed
  integer, so GCC with 32-bit long warns in C90 mode:
  this decimal constant is unsigned only in ISO C90 [enabled by default]
  Fix this by using ULONG_MAX, which should fit in any curl_off_t and has
  the correct suffix to not issue any warnings.
  Also adds the missing CURLOPT_REQUEST_TARGET from commit
  9b167fd090f596eac828817d48c247eeae53407f.
  
  Closes https://github.com/curl/curl/pull/1611

Daniel Stenberg (24 Jun 2017)
- curl/system.h: add check for XTENSA for 32bit gcc
  
  Reported-by: Neil Kolban
  Fixes: 1598

- [Henrik S. Gaßmann brought this change]

  winbuild: fix boringssl build
  
  Compile with `WIN32_LEAN_AND_MEAN` which prevents `windows.h` from
  including too much clutter including `wincrypt.h` which in turn contains
  some preprocessor macros that clash with boringssl symbols.
  
  Detect boringssl by checking the existance of `is_boringssl.h` and set
  the corresponding `HAVE_BORINGSSL` for compilation which is used in
  `ldap.c` to undefine the evil macros.
  
  Closes #1610

- progress: progress.timespent needs to be us
  
  follow-up to 64ed44a815e4e to fix test 500 failures

Marcel Raad (24 Jun 2017)
- curl-compilers.m4: fix unknown-warning-option on Apple clang
  
  Since 5598b0bd63f690c151074494ce47ef872f004ab4, clang -v is used to
  detect the clang version. The version number was expected to come after
  the word "version". For Apple clang, this doesn't work as it has its
  own versioning scheme.
  The version number is now first searched after the string
  "based on LLVM". This works for Apple clang before version 7, and also
  for e.g. Ubuntu's clang up to version 3.7. If it's not found and the
  version string contains "Apple LLVM version", clang version 3.7 is
  assumed, which is the version that comes with Xcode 7. Otherwise, the
  version number is still expected after the word "version", which works
  for very old Apple clang versions.
  
  Ref: https://trac.macports.org/wiki/XcodeVersionInfo
  Fixes https://github.com/curl/curl/issues/1606
  Closes https://github.com/curl/curl/pull/1607

Daniel Stenberg (24 Jun 2017)
- progress: fix "time spent", broke in adef394ac

- CURLINFO_REDIRECT_URL.3: mention the CURLOPT_MAXREDIRS case
  
  ... supported since 7.54.1

- maketgz: switch to -6e for xz
  
  To reduce the memory requirement for decompress, and still do almost as
  good compression as with -9e.
  
  Pointed-out-by: Dan Fandrich

- libtest/Makefile: remove unused lib1541 variables

- CONTRIBUTE.md: mention the out-of-tree build test too

- maketgz: switch to xz instead of lzma
  
  The compressed output size seems to be a tad bit smaller, but generally
  xz seems more preferred these days and is used directly by for example
  gentoo instead of bz2.
  
  "Users of LZMA Utils should move to XZ Utils" =>
  https://tukaani.org/lzma/
  
  Closes #1604

- --request-target: instead of --strip-path-slash
  
  ... and CURLOPT_REQUEST_TARGET instead of CURLOPT_STRIP_PATH_SLASH.
  
  This option instead provides the full "alternative" target to use in the
  request, instead of extracting the path from the URL.
  
  Test 1298 and 1299 updated accordingly.
  
  Idea-by: Evert Pot
  Suggestion: https://daniel.haxx.se/blog/2017/06/19/options-with-curl/comment-page-1/#comment-18373
  
  Closes #1593

Marcel Raad (21 Jun 2017)
- lib1521: fix missing-variable-declarations clang warnings
  
  Declare TU-local variables static.

- travis: enable typecheck-gcc warnings
  
  - switch debug and release configurations so that we get an optimized
    build with GCC 4.3+ as required by typecheck-gcc
  - enable warnings-as-errors for release builds
    (which have warnings disabled)
  
  Closes https://github.com/curl/curl/pull/1595

- typecheck-gcc: add support for CURLINFO_OFF_T
  
  typecheck-gcc expected curl_socket_t instead of curl_off_t arguments
  for CURLINFO_OFF_T. Detected by test1521, unfortunately only when run
  locally.
  
  Closes https://github.com/curl/curl/pull/1592

Daniel Stenberg (21 Jun 2017)
- [Simon Warta brought this change]

  ci: whitelist branches to avoid testing feature branches twice

- [Gisle Vanem brought this change]

  lib: fix the djgpp build
  
  Bug: https://github.com/curl/curl/commit/73a2fcea0b4adea6ba342cd7ed1149782c214ae3#commitcomment-22655993

Marcel Raad (20 Jun 2017)
- if2ip: fix compiler warning in ISO C90 mode
  
  remote_scope_id is only used when both HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
  and ENABLE_IPV6 are defined instead of only one of them.

Daniel Stenberg (20 Jun 2017)
- travis: do the distcheck test build out-of-tree as well

- http: add --strip-path-slash and CURLOPT_STRIP_PATH_SLASH
  
  ... to enable sending "OPTIONS *" which wasn't possible previously.
  
  This option currently only works for HTTP.
  
  Added test cases 1298 + 1299 to verify
  
  Fixes #1280
  Closes #1462

- test1521: test getinfo's OFF_T types too
  
  Closes #1588

- lib1521: add curl_easy_getinfo calls to the test set
  
  Also added return value checks to make sure no unexpected return codes
  are used.

- [Simon Warta brought this change]

  automake: use $(MKHELP) variable instead if constant mkhelp.pl
  
  this improves symmetry with the rule above

- [Simon Warta brought this change]

  mkhelp.pl: fix script name in usage text

- RELEASE-NOTES: synced with 3b80d3ca4

- getinfo: return sizes as curl_off_t
  
  This change introduces new alternatives for the existing six
  curl_easy_getinfo() options that return sizes or speeds as doubles. The
  new versions are named like the old ones but with an appended '_T':
  
  CURLINFO_CONTENT_LENGTH_DOWNLOAD_T
  CURLINFO_CONTENT_LENGTH_UPLOAD_T
  CURLINFO_SIZE_DOWNLOAD_T
  CURLINFO_SIZE_UPLOAD_T
  CURLINFO_SPEED_DOWNLOAD_T
  CURLINFO_SPEED_UPLOAD_T
  
  Closes #1511

- PIPELINING_SERVER_BL: cleanup the internal list use
  
  The list was freed incorrectly since the llist refactor of
  cbae73e1dd959. Added test 1550 to verify that it works and avoid future
  regressions.
  
  Reported-by: Pascal Terjan
  
  Fixes #1584
  Closes #1585

- http2: fix OOM crash
  
  torture mode with test 1021 found it

- CURLOPT_PREQUOTE.3: spellfix man page reference

Marcel Raad (18 Jun 2017)
- http_proxy: fix build with http and proxy
  
  After deff7de0eb0e22d2d142b96b9cc84cd8db5d2a48, the build without
  CURL_DISABLE_PROXY and CURL_DISABLE_HTTP was failing because of missing
  includes.

- http_proxy: fix compiler warning
  
  With CURL_DISABLE_PROXY or CURL_DISABLE_HTTP, GCC complained about a
  missing prototype for Curl_connect_free.

Daniel Stenberg (18 Jun 2017)
- TODO: update the TOC too

- TODO: implement support for CURLOPT_PREQUOTE with SFTP
  
  ... also updated the CURLOPT_PREQUOTE.3 man page to mention the correct
  protocol support.
  
  Closes #1514

- tool_wrte_cb: remove check for config == NULL
  
  ... as it really cannot have reached this far with config being NULL,
  thus this is unnecesary and misleading.
  
  Bug: https://news.ycombinator.com/item?id=14577585 and
  https://daniel.haxx.se/blog/2017/06/17/curl-doesnt-spew-binary-anymore/comment-page-1/#comment-18356
  
  Forwarded-to-us-by: Jakub Wilk

- curl: prevent binary output spewed to terminal
  
  ... unless "--output -" is used. Binary detection is done by simply
  checking for a binary zero in early data.
  
  Added test 1425 1426 to verify.
  
  Closes #1512

Marcel Raad (16 Jun 2017)
- Makefile.m32: enable -W for MinGW32 build
  
  The configure-based build also has this in addition to -Wall.
  
  Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable comma clang warning
  
  It usually warns when using commas instead of semicolons or other
  operators by accident.
  
  Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable missing-variable-declarations clang warning
  
  It usually warns when forgetting to declare TU-local variables static.
  
  Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable double-promotion warning
  
  Enable -Wdouble-promotion for both GCC and clang. It warns on implicit
  promotion from float to double.
  
  Closes https://github.com/curl/curl/pull/1578

- curl-compilers.m4: enable vla warning for clang
  
  Previously, that warning was only implicitly active in C90 mode.
  Enable it unconditionally as already done for GCC.
  
  Closes https://github.com/curl/curl/pull/1578

Daniel Stenberg (16 Jun 2017)
- http-proxy: fix chunked-encoded CONNECT responses
  
  Regression since 5113ad0424.
  
  ... and remove 'flaky' from test 1061 again
  
  Closes #1579

- http-proxy: deal with EAGAIN
  
  ... the previous code would reset the header length wrongly (since
  5113ad0424). This makes test 1060 reliable again.
  
  Also: make sws send even smaller chunks of data to increase the
  likeliness of this happening.

- libtest/libntlmconnect: fix compiler warnings from f94fcdb

- [Jay Satiro brought this change]

  HTTPS-Proxy: don't offer h2 for https proxy connections
  
  Bug: https://github.com/curl/curl/issues/1254
  
  Closes #1546

- tests: stabilize test 2032 and 2033
  
  Both these tests run the same underlying test code: libntlmconnect.c -
  this test code made some assumptions about socket ordering when it used
  curl_easy_fdset() and when we changed timing or got accidental changes
  in libcurl the tests would fail.
  
  The tests verify that the different transfers keep using the same
  connections, which I now instead made sure by adding the number of bytes
  each transfer gets and then verifies that they always get the same
  amount as when these tests worked.
  
  Closes #1576

- test1148: verify the -# progressbar
  
  Closes #1569

- test1061: mark as flaky
  
  Fails intermittently on travis builds since a few days. Likely due to
  5113ad0424.

Jay Satiro (16 Jun 2017)
- url: refactor the check for Windows drive letter in path
  
  - Move the logic to detect a Windows drive letter prefix
    (eg c: in c:foo) into a function-like macro.
  
  Closes https://github.com/curl/curl/pull/1571

- mk-ca-bundle.pl: Check curl's exit code after certdata download
  
  - No longer allow partial downloads of certdata.
  
  Prior to this change partial downloads were (erroneously?) allowed since
  only the server code was checked to be 200.
  
  Bug: https://github.com/curl/curl/pull/1577
  Reported-by: Matteo B.

Daniel Stenberg (16 Jun 2017)
- dist: add the fuzz dir to the tarball

- configure: disable nghttp2 too if HTTP has been disabled

- http-proxy: fix build with --disable-proxy or --disable-http
  
  Reported-by: Dan Fandrich

- fuzz/README: document how to build
  
  Fixes #1476

- [Frederik B brought this change]

  fuzz: corpora file structure, initial commit

- [Frederik B brought this change]

  fuzz: bring oss-fuzz initial code converted to C89

- http-proxy: only attempt FTP over HTTP proxy
  
  ... all other non-HTTP protocol schemes are now defaulting to "tunnel
  trough" mode if a HTTP proxy is specified. In reality there are no HTTP
  proxies out there that allow those other schemes.
  
  Assisted-by: Ray Satiro, Michael Kaufmann
  
  Closes #1505

- TODO: the generated include file is gone
  
  ... since commit 73a2fcea0b

- curl_setup.h: error out on CURL_WANTS_CA_BUNDLE_ENV use
  
  ... to make it really apparent if there's any user using this on purpose.
  
  Suggested-by: Jay Satiro
  
  Closes #1542

- lib/curl_setup.h: remove CURL_WANTS_CA_BUNDLE_ENV
  
  When this define was set, libcurl would check the environment variable
  named CURL_CA_BUNDLE at run-time and use that CA cert bundle. This
  feature was only defined by the watcom and m32 makefiles and caused
  inconsistent behaviours among libcurls built on different platforms.
  
  The curl tool does already feature its own similar logic and the library
  does not really need it, and it isn't documented libcurl behavior. So
  this change removes it.
  
  Ref: #1538

- test1147: verify -H on a file

- curl: allow --header and --proxy-header read from file
  
  So many headers can be provided as @filename.
  
  Suggested-by: Timothe Litt
  
  Closes #1486

- RELEASE-NOTES: synced with 2ad80eec5

- curl/curlver.h: start working on 7.55.0

- http-proxy: do the HTTP CONNECT process entirely non-blocking
  
  Mentioned as a problem since 2007 (8f87c15bdac63) and of course it
  existed even before that.
  
  Closes #1547

- progress: let "current speed" be UL + DL speeds combined
  
  Bug #1556
  Reported-by: Paul Harris
  Closes #1559

Marcel Raad (14 Jun 2017)
- system.h: fix MinGW build
  
  CURLSYS_PULL_WS2TCPIP_H got renamed to CURL_PULL_WS2TCPIP_H in commit
  73a2fcea0b4adea6ba342cd7ed1149782c214ae3.

Daniel Stenberg (14 Jun 2017)
- timers: store internal time stamps as time_t instead of doubles
  
  This gives us accurate precision and it allows us to avoid storing "no
  time" for systems with too low timer resolution as we then bump the time
  up to 1 microsecond. Should fix test 573 on windows.
  
  Remove the now unused curlx_tvdiff_secs() function.
  
  Maintains the external getinfo() API with using doubles.
  
  Fixes #1531

- dist: make the hugehelp.c not get regenerated unnecessarily
  
  The maketgz script now makes sure the generated hugehelp.c file in the
  tarball is newer than the generated curl.1 man page, so that it doesn't
  have to get unnecessarily rebuilt first thing in a typical build. It
  thus also removes the need for perl to build off a plain release
  tarball.
  
  Fixes #1565

- includes: remove curl/curlbuild.h and curl/curlrules.h
  
  Rely entirely on curl/system.h now.
  
  Introduced in Aug 2008 with commit 14240e9e109f. Now gone.
  
  Fixes #1456

Version 7.54.1 (14 Jun 2017)

Daniel Stenberg (14 Jun 2017)
- release: 7.54.1

Dan Fandrich (13 Jun 2017)
- mk-lib1521.pl: updated to match the test changes in 916ec30a

Daniel Stenberg (13 Jun 2017)
- [Stuart Henderson brought this change]

  libressl: OCSP and intermediate certs workaround no longer needed
  
  lib/vtls/openssl.c has a workaround for a bug with OCSP responses signed
  by intermediate certs, this was fixed in LibreSSL in
  https://github.com/libressl-portable/openbsd/commit/912c64f68f7ac4f225b7d1fdc8fbd43168912ba0
  
  Bug: https://curl.haxx.se/mail/lib-2017-06/0038.html

- url: fix buffer overwrite with file protocol (CVE-2017-9502)
  
  Bug: https://github.com/curl/curl/issues/1540
  Advisory: https://curl.haxx.se/docs/adv_20170614.html
  
  Assisted-by: Ray Satiro
  Reported-by: Marcel Raad

- urlglob: fix division by zero
  
  The multiply() function that is used to avoid integer overflows, was
  itself reason for a possible division by zero error when passed a
  specially formatted glob.
  
  Reported-by: GwanYeong Kim

- configure: update the copyright year in the output

- [ygrek brought this change]

  BINDINGS: update SP-Forth and OCaml urls

Michael Kaufmann (11 Jun 2017)
- FindWin32CACert: Use a temporary buffer on the stack
  
  Don't malloc() the temporary buffer, and use the correct type:
  SearchPath() works with TCHAR, but SearchPathA() works with char.
  Set the buffer size to MAX_PATH, because the terminating null byte
  is already included in MAX_PATH.
  
  Reviewed-by: Daniel Stenberg
  Reviewed-by: Marcel Raad
  
  Closes #1548

Dan Fandrich (11 Jun 2017)
- test1521: fixed OOM handling

Daniel Stenberg (9 Jun 2017)
- RELEASE-PROCEDURE: updated future release dates

- [Paul Harris brought this change]

  gitignore: ignore all vim swap files
  
  Closes #1561

- lib1521: fix compiler warnings on the use of bad 'long' values
  
  Reported-by: Marcel Raad
  Bug: https://github.com/curl/curl/commit/cccac4fb2b20d6ed87da7978408c3ecacc464fe4#commitcomment-22453387

- setopt: check CURLOPT_ADDRESS_SCOPE option range
  
  ... and return error instead of triggering an assert() when being way
  out of range.

Jay Satiro (8 Jun 2017)
- [TheAssassin brought this change]

  cmake: Fix inconsistency regarding mbed TLS include directory
  
  Previously, one had to set MBEDTLS_INCLUDE_DIR to make CMake find the
  headers, but the system complained that mbed TLS wasn't found due to
  MBEDTLS_INCLUDE_DIRS (note the trailing s) was not set. This commit
  attempts to fix that.
  
  Closes https://github.com/curl/curl/pull/1541

Daniel Stenberg (8 Jun 2017)
- [Ryuichi KAWAMATA brought this change]

  examples/multi-uv.c: fix deprecated symbol
  
  Closes #1557

- asyn-ares: s/Curl_expire_latest/Curl_expire

- expire: remove Curl_expire_latest()
  
  With the introduction of expire IDs and the fact that existing timers
  can be removed now and thus never expire, the concept with adding a
  "latest" timer is not working anymore as it risks to not expire at all.
  
  So, to be certain the timers actually are in line and will expire, the
  plain Curl_expire() needs to be used. The _latest() function was added
  as a sort of shortcut in the past that's quite simply not necessary
  anymore.
  
  Follow-up to 31b39c40cf90
  
  Reported-by: Paul Harris
  
  Closes #1555

- [Chris Carlmar brought this change]

  configure: fix link with librtmp when specifying path
  
  Bug: https://curl.haxx.se/mail/lib-2017-06/0017.html

- file: make speedcheck use current time for checks
  
  ... as it would previously just get the "now" timestamp before the
  transfer starts and then not update it again.
  
  Closes #1550

- metalink: remove unused printf() argument

- travis: let some builds *not* use --enable-debug
  
  typecheck-gcc and other things require optimized builds
  
  Closes #1544

- README.md: show the coverall coverage on github

- lib1521: fix compiler warnings

- test1521: make the code < 80 columns wide

- test1121: use stricter types to work with typcheck-gcc

- typecheck-gcc: allow CURLOPT_STDERR to be NULL too

- test1521: test *all* curl_easy_setopt options
  
  mk-lib1521.pl generates a test program (lib1521.c) that calls
  curl_easy_setopt() for every known option with a few typical values to
  make sure they work (ignoring the return codes).
  
  Some small changes were necessary to avoid asserts and NULL accesses
  when doing this.
  
  The perl script needs to be manually rerun when we add new options.
  
  Closes #1543

Dan Fandrich (5 Jun 2017)
- test1538: added "verbose logs" keyword
  
  These error messages are not displayed with --disable-verbose

Daniel Stenberg (5 Jun 2017)
- test1262: verify ftp download with -z for "if older than this"

Marcel Raad (5 Jun 2017)
- curl_ntlm_core: use Curl_raw_toupper instead of toupper
  
  This was the only remaining use of toupper in the entire source code.
  
  Suggested-by: Daniel Stenberg

Daniel Stenberg (4 Jun 2017)
- RELEASE-NOTES: synced with 65ba92650

Marcel Raad (4 Jun 2017)
- curl_ntlm_core: pass unsigned char to toupper
  
  Otherwise, clang on Cygwin64 warns:
  curl_ntlm_core.c:525:35: error: array subscript is of type 'char'
  [-Werror,-Wchar-subscripts]
      dest[2 * i] = (unsigned char)(toupper(src[i]));
                                    ^~~~~~~~~~~~~~~
  /usr/include/ctype.h:152:25: note: expanded from macro 'toupper'
        (void) __CTYPE_PTR[__x]; (toupper) (__x);})
                          ^~~~

Jay Satiro (3 Jun 2017)
- [Mahmoud Samir Fayed brought this change]

  BINDINGS: add Ring binding
  
  Closes https://github.com/curl/curl/pull/1539

Daniel Stenberg (4 Jun 2017)
- CONTRIBUTE.md: mention tests done on pull requests

- travis: add coverage, distcheck and cmake builds
  
  Closes #1534

Marcel Raad (3 Jun 2017)
- libtest: fix int-in-bool-context warnings
  
  GCC 7 complained:
  ‘*’ in boolean context, suggest ‘&&’ instead [-Wint-in-bool-context]

- libtest: fix implicit-fallthrough warnings with GCC 7

- x509asn1: fix implicit-fallthrough warning with GCC 7

- curl_sasl: fix unused-variable warning
  
  This fixes the following warning with CURL_DISABLE_CRYPTO_AUTH,
  as seen in the autobuilds:
  
  curl_sasl.c:417:9: warning: unused variable 'serverdata'
  [-Wunused-variable]

Daniel Stenberg (3 Jun 2017)
- updatemanpages.pl: error out on too old git version

Marcel Raad (3 Jun 2017)
- cyassl: define build macros before including ssl.h
  
  cyassl/ssl.h needs the macros from cyassl/options.h, so define them
  before including cyassl/ssl.h the first time, which happens in
  urldata.h.
  This broke the build on Ubuntu Xenial, which comes with WolfSSL 3.4.8
  and therefore redefines the symbols from cyassl/options.h instead of
  including the header.
  
  Closes https://github.com/curl/curl/pull/1536

Daniel Stenberg (3 Jun 2017)
- tool_util: remove unused tvdiff_secs and remove tool_ prefix
  
  Closes #1532

- dedotdot: fixed output for ".." and "." only input
  
  Found when updating test 1395, which I did to increase test coverage of
  this source file...
  
  Closes #1535

Marcel Raad (2 Jun 2017)
- mbedtls: make TU-local variable static
  
  mbedtls_x509_crt_profile_fr is only used locally.
  This fixes a missing-variable-declarations warning with clang.

- MD(4|5): silence cast-align clang warning
  
  Unaligned access is on purpose here and the warning is harmless on
  affected architectures. GCC knows that, while clang warns on all
  architectures.

Daniel Stenberg (2 Jun 2017)
- test1538: fix typo

- test1538: verify the libcurl strerror API calls

- curl_endian: remove unused functions
  
  Closes #1529

- test1537: dedicated tests of the URL (un)escape API calls
  
  Closes #1530

- coverage: run event tests too
  
  ... the torture ones are commented out only because they are slooooow.

- build: provide easy code coverage measuring
  
  Closes #1528

- typecheck-gcc.h: check CURLINFO_CERTINFO
  
  ... and update the certinfo.c example accordingly.
  
  Fixes https://github.com/curl/curl/issues/846

- typecheck-gcc.h: check CURLINFO_TLS_SSL_PTR and CURLINFO_TLS_SESSION
  
  ... so that they get the required "struct curl_tlssessioninfo **"
  arguments.

- typecheck-gcc.h: separate getinfo slist checks from other pointers
  
  Fixes #1524

Marcel Raad (1 Jun 2017)
- curl-compilers.m4: escape square brackets in regex
  
  Otherwise, they are removed in the final configure file.
  Also changed sed to "$SED" like in most other calls in this file.

- curl-compilers.m4: fix compiler_num for clang
  
  "clang -dumpversion" always returns "4.2.1", the GCC version that clang
  was initially compatible to. Use "clang -v" instead, which returns the
  actual clang version.
  
  Fixes https://github.com/curl/curl/issues/1522
  Closes https://github.com/curl/curl/pull/1523

Daniel Stenberg (31 May 2017)
- examples/externalsocket.c: s/closesocket/closecb
  
  ... since closesocket is a function in WinSock.
  
  Reported-by: Marcel Raad
  Bug: https://github.com/curl/curl/commit/55fcb8485914700132fd1854c9509b66c955efbe#co
  mmitcomment-22347818

Marcel Raad (31 May 2017)
- lib583: fix compiler warning
  
  Use CURLMcode for variable 'res' and cast to int where necessary
  instead of the other way around. Other tests do the same.
  
  This fixes the following clang warning:
  lib583.c:68:15: warning: cast from function call of type 'CURLMcode' to
  non-matching type 'int' [-Wbad-function-cast]

Daniel Stenberg (31 May 2017)
- CURLOPT_SSH_KEY*.3: typos
  
  Reported-by: Gisle Vanem

- CURLOPT_STREAM_DEPENDS.3: typo

- CURLOPT_FNMATCH_FUNCTION.3: also modified example to avoid fcpp issues

- CURLOPT_FNMATCH_DATA.3: modified example to avoid fcpp issues

- opts: more than 100 more examples for man pages...

- libtest/lib574.c: use correct callback proto

- examples/sampleconv.c: indent changes, made callbacks static

- example/externalsocket.c: make it use CLOSESOCKETFUNCTION too

Marcel Raad (31 May 2017)
- curl-compilers.m4: enable -Wshift-sign-overflow for clang
  
  clang 2.9+ supports -Wshift-sign-overflow, which warns about undefined
  behavior on signed left shifts when shifting by too many places.
  
  Ref: https://github.com/curl/curl/issues/1516
  Closes https://github.com/curl/curl/pull/1517

Daniel Stenberg (31 May 2017)
- CURLOPT_PROXY.3: fix test 1140 breakage

Jay Satiro (31 May 2017)
- build-wolfssl: Sync config with wolfSSL 3.11
  
  wolfSSL configure script relevant changes from 3.10 to 3.11:
  
  - Async threading support added; disabled by default without async
    crypto, which continues to be disabled by default.
  
  wolfSSL configure script relevant changes from 3.11 to 3.11.1 (beta):
  
  - TLS 1.3 beta support added; disabled by default.
  
  For experimenting I put in a comment block the defines needed to enable
  TLS 1.3 support (ie the equivalent of --enable-tls13).

Daniel Stenberg (30 May 2017)
- opts: more examples added to man pages

- docs: clarify NO_PROXY further
  
  Fixes #1208

- CURLOPT_PROXY.3: describe the environment variables more

- transfer: init the infilesize from the postfields...
  
  ... with a strlen() if no size was set, and do this in the pretransfer
  function so that the info is set early. Otherwise, the default strlen()
  done on the POSTFIELDS data never sets state.infilesize.
  
  Reported-by: Vincas Razma
  Bug: #1294

Jay Satiro (29 May 2017)
- test557: fix ubsan runtime error due to int left shift
  
  - Test curl_msnprintf negative int width arg using INT_MIN instead of
    1 << 31 which is undefined behavior.
  
  Closes https://github.com/curl/curl/issues/1516

- mbedtls: fix variable shadow warning
  
  vtls/mbedtls.c:804:69: warning: declaration of 'entropy' shadows a global declaration [-Wshadow]
   CURLcode Curl_mbedtls_random(struct Curl_easy *data, unsigned char *entropy,
                                                                       ^~~~~~~

Daniel Stenberg (29 May 2017)
- RELEASE-NOTES: synced with 3aaac8c2f

Dan Fandrich (28 May 2017)
- tests: removed some redundant empty <stdout> sections

- runtests.pl: removed <precommand> feature
  
  This hasn't been used in over a decade. <precheck> can still be used to
  run commands before the main test.

Daniel Stenberg (27 May 2017)
- opts: more examples added in option man pages

Dan Fandrich (27 May 2017)
- runtests.pl: removed unused arguments to valgrindparse

Daniel Stenberg (25 May 2017)
- TODO: 6.4 is done, send telnet data in chunks

- [Phil Crump brought this change]

  docs/CURLOPT_SSLVERSION.3: Correct define name in example
  
  Closes #1509

- ssh: fix 'left' may be used uninitialized
  
  follow-up to f31760e63b4e
  
  Reported-by: Michael Kaufmann
  Bug: https://github.com/curl/curl/pull/1495#issuecomment-303982793

Michael Kaufmann (24 May 2017)
- time: fix type conversions and compiler warnings
  
  Fix bugs and compiler warnings on systems with 32-bit long and
  64-bit time_t.
  
  Reviewed-by: Daniel Stenberg
  
  Closes #1499

Marcel Raad (24 May 2017)
- examples: fix Wimplicit-fallthrough warnings
  
  This is contained in -Wextra with GCC 7.

Daniel Stenberg (24 May 2017)
- [Anatol Belski brought this change]

  winbuild: fix the nghttp2 build
  
  Closes #1321

GitHub (24 May 2017)
- [Sergei Nikulov brought this change]

  LDAP: documentation update per #878 changes (#1506)

Daniel Stenberg (23 May 2017)
- redirect: store the "would redirect to" URL when max redirs is reached
  
  Test 1261 added to verify.
  
  Reported-by: Lloyd Fournier
  
  Fixes #1489
  Closes #1497

GitHub (24 May 2017)
- [Sergei Nikulov brought this change]

  LDAP: fixed checksrc issue

- [Sergei Nikulov brought this change]

  LDAP: using ldap_bind_s on Windows with methods (#878)
  
  * LDAP: using ldap_bind_s on Windows with methods(BASIC/DIGEST/NTLM/AUTONEG)
  
  * ldap: updated per build options handling
  
  * ldap: fixed logic for auth selection

Daniel Stenberg (23 May 2017)
- [Akhil Kedia brought this change]

  cmake: fix build on Ubuntu 14.04
  
  Fixed a syntax error with setting cache variables (The type and
  docstring were missing), resulting in build errors.  Quoted the
  CURL_CA_PATH and CURL_CA_BUNDLE otherwise the path was written without
  quotes in C code, resulting in build errors.
  
  Closes #1503
  
  Signed-off-by: Akhil <akhil.kedia@samsung.com>

- url: fix declaration of 'pipe' shadows a global declaration
  
  follow-up to 4cdb1be8246c

Kamil Dudka (22 May 2017)
- memdebug: fix compilation failure
  
  .... caused by a typo in the last commit (fixing issue #1504):
  
  memdebug.c: In function ‘curl_fclose’:
  memdebug.c:444:3: error: implicit declaration of function
  ‘DEBUGDEBUGASSERT’ [-Werror=implicit-function-declaration]

Daniel Stenberg (22 May 2017)
- assert: avoid, use DEBUGASSERT instead!
  
  ... as it does extra checks to actually work.
  
  Reported-by: jonrumsey at github
  Fixes #1504

- [Simon Warta brought this change]

  cmake: remove unused variables: GNUTLS_ENABLED, NSS_ENABLED

- [Simon Warta brought this change]

  cmake: remove CURL_CA_BUNDLE from cmake TODO

- [Simon Warta brought this change]

  cmake: auto detection of CURL_CA_BUNDLE/CURL_CA_PATH
  
  Closes #1461

- [Simon Warta brought this change]

  cmake: add CURL_CA_BUNDLE/CURL_CA_FALLBACK/CURL_CA_PATH options

- [Simon Warta brought this change]

  cmake: Add CURL_CA_FALLBACK to curl_config.h.cmake
  
  This is for symmetry with the autoconf generated curl_config.h.in

- RELEASE-NOTES: synced with 052a14e3c

Michael Kaufmann (20 May 2017)
- tests: stabilize test 1034
  
  Pass the invalid domain name on stdin. On some systems, the test
  framework cannot pass invalid UTF-8 sequences on the command line.
  
  Closes #1488

Daniel Stenberg (20 May 2017)
- ssh: ignore timeouts during disconnect
  
  ... as otherwise it risks not cleaning up the libssh2 handle properly
  which leads to memory leak!
  
  Assisted-by: Joel Depooter
  
  Closes #1495
  Closes #1479
  
  Bug: https://curl.haxx.se/mail/lib-2017-04/0024.html

- ghiper.c/hiperfifo.c: add comment about missing timer functionality
  
  It takes someone to read up on the APIs of these libraries to figure out
  how to do this correctly.
  
  Reported-by: Michael Kaufmann
  
  Closes #1253

- asiohiper.cpp / evhiperfifo.c: deal with negative timerfunction input
  
  That means delete the timer.
  
  Reported-by: Michael Kaufmann
  Ref: #1253

- cmdline-opts/write-out.d: s/-L/--location
  
  Since the man page generator wants the long option name version to
  generate the proper output.

- [Bernhard M. Wiedemann brought this change]

  mkhelp.pl: do not add current time into curl binary
  
  ... as part of hugehelpgz rodata to make build reproducible.
  
  See https://reproducible-builds.org/ for why this is good
  
  Closes #1490

- oauth2-bearer.d: mention the <token> argument

Nick Zitzmann (16 May 2017)
- darwinssl: Fix exception when processing a client-side certificate file
  if no error was raised by the API but the SecIdentityRef was null
  
  Fixes #1450

Daniel Stenberg (16 May 2017)
- curl_sasl: fix build error with CURL_DISABLE_CRYPTO_AUTH + USE_NTLM
  
  Reported-by: wyattoday at github
  Fixes #1487

- docs/cmdline-opts/config.d: edit for language

- RELEASE-NOTES: synced with eb16305e6

- [moparisthebest brought this change]

  SecureTransport/DarwinSSL: Implement public key pinning
  
  Closes #1400

- man pages: fix example syntax errors
  
  follow-up to 5ddad099b42b50

- docs/libcurl/opts: added more examples in man pages

- CURLOPT_HTTPPROXYTUNNEL: clarify, add example

- curl: show the libcurl release date in --version output
  
  ... and support and additional "security patched" date for those who
  enhance older versions that way. Pass on the define CURL_PATCHSTAMP with
  a date for that.
  
  Building with non-release headers shows the date as [unreleased].
  
  Also: this changes the date format generated in the curlver.h file to be
  "YYYY-MM-DD" (no name of the day or month, no time, no time zone) to
  make it easier on the eye and easier to parse. Example (new) date
  string: 2017-05-09
  
  Suggested-by: Brian Childs
  
  Closes #1474

Dan Fandrich (13 May 2017)
- url.c: add a compile-time check that CURL_MAX_WRITE_SIZE is large enough
  
  Some code (e.g. Curl_fillreadbuffer) assumes that this buffer is not
  exceedingly tiny and will break if it is. This same check is already
  done at run time in the CURLOPT_BUFFERSIZE option.

- lib510: don't write past the end of the buffer if it's too small

- tests: added missing keywords "chunked Transfer-Encoding"

Daniel Stenberg (13 May 2017)
- THANKS: add a few missing names
  
  ... I found them in the commit logs from the early years

Dan Fandrich (13 May 2017)
- tests: made a couple of prechecks consistent with others
  
  Also removed a TODO suggesting caching the precheck results. Tests
  showed this would save about 0.1 sec on the total test run time on a
  relatively modern system, an unnoticeable gain at the cost of longer and
  more complicated code. There would also be a danger that a cached test
  result would be inappropriately returned, such as when other test
  dependencies (like environment variables) are different or when the
  precheck causes side effects (like filesystem changes).

Daniel Stenberg (12 May 2017)
- FAQ: add 7.4 to toc
  
  ... and delete trailing whitespace
  
  Fixes #1484

- multi: remove leftover debug infof() calls from e9fd794a6

- pipeline: fix mistakenly trying to pipeline POSTs
  
  The function IsPipeliningPossible() would return TRUE if either
  pipelining OR HTTP/2 were possible on a connection, which would lead to
  it returning TRUE even for POSTs on HTTP/1 connections.
  
  It now returns a bitmask so that the caller can differentiate which kind
  the connection allows.
  
  Fixes #1481
  Closes #1483
  Reported-by: stootill at github

Jay Satiro (12 May 2017)
- [Ron Eldor brought this change]

  mbedtls: Support server renegotiation request
  
  Tested with servers: IIS 7.5; OpenSSL 1.0.2.
  
  Closes https://github.com/curl/curl/pull/1475

Marcel Raad (11 May 2017)
- cookie_interface: fix -Wcomma warning
  
  clang 5.0 complains:
  possible misuse of comma operator here [-Wcomma]

- formdata: fix -Wcomma warning
  
  clang 5.0 complains:
  possible misuse of comma operator here [-Wcomma]
  
  Change the comma to a semicolon to fix that.

Daniel Stenberg (10 May 2017)
- multi: use a fixed array of timers instead of malloc
  
  ... since the total amount is low this is faster, easier and reduces
  memory overhead.
  
  Also, Curl_expire_done() can now mark an expire timeout as done so that
  it never times out.
  
  Closes #1472

- multi: assign IDs to all timers and make each timer singleton
  
   A) reduces the timeout lists drastically
  
   B) prevents a lot of superfluous loops for timers that expires "in vain"
      when it has actually already been extended to fire later on

- [Richard Hsu brought this change]

  tests: remove superfluous test 1399
  
  @MarcelRaad noted that `test1399` causes infinite loop on MinGW.
  Looking into this, seems like it is related to how Windows handles
  CRLF. See https://github.com/curl/curl/commit/9e093f by @mback2k.
  Removing `test1399` as it's identical to `test1326` then with such a
  fix.
  
  Test 1399 was broughy by commit 862b02f8947039e
  
  Closes #1478

Dan Fandrich (9 May 2017)
- tests: make test file names more unique
  
  Include the test number in the names of files written out by tests to
  reduce the chance of accidental duplication and to make it more clear
  which test is associated with which file.

- tests: removed redundant --trace-ascii arguments
  
  This is already added by the test suite; it's not clear why all these
  tests had it, unless it's cargo-culting.

Marcel Raad (9 May 2017)
- tool: fix remaining -Wcast-qual warnings
  
  Avoid casting away low-level const.

Daniel Stenberg (9 May 2017)
- formboundary: convert assert into run-time check
  
  ... to really make sure the boundary fits in the target buffer.
  
  Fixes unused parameter 'buflen' warning.
  
  Reported-by: Michael Kaufmann
  Bug: https://github.com/curl/curl/pull/1468#issuecomment-300078754

Dan Fandrich (9 May 2017)
- tests: list the primary server first in the server section

Daniel Stenberg (8 May 2017)
- curl: generate the --help output
  
  ... using the docs/cmdline-opts/gen.pl script, so that we get all the
  command line option documentation from the same source.
  
  The generation of the list has to be done manually and pasted into the
  source code.
  
  Closes #1465

- tests: updated for modified fake random

- [Jay Satiro brought this change]

  rand: treat fake entropy the same regardless of endianness
  
  When the random seed is purposely made predictable for testing purposes
  by using the CURL_ENTROPY environment variable, process that data in an
  endian agnostic way so the the initial random seed is the same
  regardless of endianness.
  
  - Change Curl_rand to write to a char array instead of int array.
  
  - Add Curl_rand_hex to write random hex characters to a buffer.
  
  Fixes #1315
  Closes #1468
  
  Co-authored-by: Daniel Stenberg
  Reported-by: Michael Kaufmann

Dan Fandrich (8 May 2017)
- tests: give each stunnel.conf file a unique name
  
  Otherwise, subsequent uses of stunnel overwrite the configuration file
  of previous invocations so they can no longer be inspected.

Marcel Raad (8 May 2017)
- tool_msgs: remove wrong cast
  
  Commit 481e0de00a9003b9c5220b120e3fc302d9b0932d changed the variable
  type from int to size_t, so don't cast the result of strlen to int
  anymore.

- tftpd: fix signed/unsigned mismatch warnings
  
  alarm's argument is unsigned.

- libtest: fix MinGW-w64 warnings
  
  long is 32 bits while size_t is 64 bits on MinGW-w64, so
  typecheck-gcc.h complains when using size_t for a long option.
  Also, curl_socket_t is unsigned long long rather than int.

Daniel Stenberg (8 May 2017)
- curl.1: depend the build on the Makefile.inc too
  
  ... to also make it update when we remove files, like we did for
  --environment in commit a8e388dd1095.

- RELEASE-NOTES: synced with e3f84efc32d6b01a

- runtests: fix "use of undefined value" warning in -R handling

Marcel Raad (8 May 2017)
- test537: use correct variable type
  
  Avoids narrowing conversion warnings because rlim_t is usually
  unsigned long.
  
  Closes https://github.com/curl/curl/pull/1469

- sendrecv: fix MinGW-w64 warning
  
  The first argument to select is an int, while curl_socket_t is
  unsigned long long when using WinSock. It's ignored anyway [1].
  
  [1] https://msdn.microsoft.com/en-us/library/windows/desktop/ms740141.aspx

- tool_parsecfg: fix -Wcast-qual warning
  
  Don't convert string literal to char * before assigning it to
  const char *.

- asyn-thread: fix unused macro warnings
  
  Don't do anything in this file if CURLRES_THREADED is not defined.

- tftp: silence bad-function-cast warning
  
  The cases this warns about are handled elsewhere, so just use an
  intermediate variable to silence the warning.

Daniel Stenberg (7 May 2017)
- [canavan at github brought this change]

  buildconf: fix hang on IRIX
  
  Apparently, /usr/bin/m4 ignores the --version parameter and waits for
  input from stdin.
  
  Fixes #1471

- opts: fix bad example formatting \n => \\n
  
  ...to render properly nroff.

- opts: examples added to 8 more libcurl option man pages

- curl: remove tool_writeenv.[ch]
  
  ... and USE_ENVIRONMENT and --environment. It was once added for RISC OS
  support and its platform specific behavior has been annoying ever
  since. Added in commit c3c8bbd3b2688da8e, mostly unchanged since
  then. Most probably not actually used for years.
  
  Closes #1463

Dan Fandrich (6 May 2017)
- runtests.pl: simplify the datacheck read section
  
  Also, document that numbered datacheck sections are possible.

Marcel Raad (5 May 2017)
- tests: fix -Wcast-qual warnings
  
  Avoid casting string literals to non-const char *.

Daniel Stenberg (5 May 2017)
- docs/opts: 24 more man pages now have examples

- docs/opts: 23 more man pages now have examples

- tests/server: run checksrc by default in debug-builds

- curl_slist_append.3: clarify a NULL input creates a new list

Marcel Raad (5 May 2017)
- unit1305: fix compiler warning
  
  calloc and ai_addrlen expect different (usually unsigned) types.

Daniel Stenberg (5 May 2017)
- runtests: use -R for random order
  
  Suggested-by: Dan Fandrich

- runtests: add -o to run test cases in scrambled order
  
  ... instead of numerical order.
  
  Closes #1466

Dan Fandrich (4 May 2017)
- sockfilt.c: shortened too long line

Marcel Raad (4 May 2017)
- tests/server: make string literals const
  
  assign string literals to const char * instead of char * in order to
  avoid a lot of these warnings:
  cast from 'const char *' to 'char *' drops const qualifier
  [-Wcast-qual]

Dan Fandrich (4 May 2017)
- schannel: return a more specific error code for SEC_E_UNTRUSTED_ROOT

- test557: set a known good numeric locale
  
  Windows does not allow setting the locale with environment variables (as
  the test attempted to do), so the test failed when run with a user
  locale that has a comma as radixchar. Changed the test to call
  setlocale() explicitly to ensure that a known working locale is set even
  on Windows.

Daniel Stenberg (4 May 2017)
- curl: fix warning "comma at end of enumerator list"

- test559: verify use of minimum CURLOPT_BUFFERSIZE

Marcel Raad (4 May 2017)
- curl_setup_once: use SEND_QUAL_ARG2 for swrite
  
  SEND_QUAL_ARG2 had to be set, but was never used. Use it in swrite to
  avoid warnings about casting away low-level const.
  
  Closes https://github.com/curl/curl/pull/1464

Daniel Stenberg (4 May 2017)
- CURLINFO_REDIRECT_URL.3: add example

- CURLINFO_EFFECTIVE_URL.3: add example

Marcel Raad (3 May 2017)
- lib: fix compiler warnings
  
  Fix the following warnings when building the tests by using the correct
  types:
  cast from 'const char *' to 'void *' drops const qualifier
  [-Wcast-qual]
  implicit conversion changes signedness [-Wsign-conversion]

- typecheck-gcc: add support for CURLINFO_SOCKET
  
  Closes https://github.com/curl/curl/pull/1452

- typecheck-gcc: add missing string options
  
  Closes https://github.com/curl/curl/pull/1452

Daniel Stenberg (3 May 2017)
- abstract-unix-socket.d: shorten the help text to fit within 79 cols

- RELEASE-NOTES: synced with 862b02f89

- [Richard Hsu brought this change]

  Telnet: Write full buffer instead of byte-by-byte
  
  Previous TODO wanting to write in chunks. We should support writing more
  at once since some TELNET servers may respond immediately upon first
  byte written such as WHOIS servers.
  
  Closes #1389

- curl: non-boolean command line args reject --no- prefixes
  
  ... and instead properly respond with an error message to the user
  instead of silently ignoring.
  
  Fixes #1453
  Closes #1458

Marcel Raad (2 May 2017)
- testpart: remove _MPRINTF_REPLACE
  
  Support for _MPRINTF_REPLACE in mprintf.h was removed in
  55452ebdff47f98bf3cc383f1dfc3623fcaefefd, replaced with curl_printf.h.

Dan Fandrich (2 May 2017)
- gtls: fixed a lingering BUFSIZE reference

Daniel Stenberg (2 May 2017)
- ssh: fix compiler warning from e40e9d7f0de

- url: let CURLOPT_BUFFERSIZE realloc to smaller sizes too
  
  Closes #1449

- BUFSIZE: rename to READBUFFER_*, make separate MASTERBUF_SIZE

- openssl: use local stack for temp storage

- sendf: remove use of BUFSIZE from debug data conversions
  
  The buffer can have other sizes.

- buffer: use data->set.buffer_size instead of BUFSIZE
  
  ... to properly use the dynamically set buffer size!

- krb5: use private buffer for temp string, not receive buffer

- upload: UPLOAD_BUFSIZE is now for the upload buffer

- unit1606: do not print/access buffer
  
  It was a wrong assumption that it could do that!

- http-proxy: use a dedicated CONNECT response buffer
  
  To make it suitably independent of the receive buffer and its flexible
  size.

- transfer: fix minor buffer_size mistake

- failf: use private buffer, don't clobber receive buffer

- pingpong: use the set buffer size

- http2: use the correct set buffer size

- http: don't clobber the receive buffer for timecond

- buffer_size: make sure it always has the correct size
  
  Removes the need for CURL_BUFSIZE

- file: use private buffer for C-L output
  
  ... instead of clobbering the download buffer.

- CURLOPT_BUFFERSIZE: 1024 bytes is now the minimum size
  
  The buffer is needed to receive FTP, HTTP CONNECT responses etc so
  already at this size things risk breaking and smaller is certainly not
  wise.

- ftp: use private buffer for temp storage, not receive buffer

- http: use private user:password output buffer
  
  Don't clobber the receive buffer.

Marcel Raad (1 May 2017)
- anyauthput: remove unused code
  
  The definition of TRUE was introduced in
  4a728747e6f8845e500910e397dfc99aaf4a7984 and is not used anymore since
  e664cd5826d43930fcc5b5dbaedbec94af33184b.
  The usage of intptr_t was removed in
  32e38b8f42477cf5ce3c3fef2fcc9db82f7fb7be.

Jay Satiro (1 May 2017)
- tool: Fix missing prototype warnings for CURL_DOES_CONVERSIONS
  
  - Include tool_convert.h where needed.
  
  Bug: https://github.com/curl/curl/issues/1460
  Reported-by: Gisle Vanem

- curl_setup: Ensure no more than one IDN lib is enabled
  
  Prior to this change it was possible for libcurl to be built with both
  Windows' native IDN lib (normaliz) and libidn2 enabled. It appears that
  doesn't offer any benefit --and could cause a bug-- since libcurl's IDN
  handling is written to use either one but not both.
  
  Bug: https://github.com/curl/curl/issues/1441#issuecomment-297689856
  Reported-by: Gisle Vanem

Marcel Raad (1 May 2017)
- getpart: use correct variable type
  
  This fixes the following clang warning:
  getpart.c:201:17: warning: cast from function call of type 'CURLcode'
  to non-matching type 'int' [-Wbad-function-cast]

- tests: declare TU-local variables static
  
  This fixes missing-variable-declarations warnings when building with
  clang.

- tool_cb_prg: fix double-promotion warning
  
  clang complains:
  tool_cb_prg.c:86:22: error: implicit conversion increases
  floating-point precision: 'float' to 'double'
  [-Werror,-Wdouble-promotion]
  
  Fix this by using a double instead of a float constant.

Dan Fandrich (1 May 2017)
- examples: fixed too long line and too long string warnings

Marcel Raad (30 Apr 2017)
- examples: declare TU-local variables static
  
  This fixes missing-variable-declarations warnings when building with
  clang.

- http2: declare TU-local variables static
  
  This fixes the following clang warnings:
  
  http2.c:184:27: error: no previous extern declaration for non-static
  variable 'Curl_handler_http2' [-Werror,-Wmissing-variable-declarations]
  http2.c:204:27: error: no previous extern declaration for non-static
  variable 'Curl_handler_http2_ssl'
  [-Werror,-Wmissing-variable-declarations]

Dan Fandrich (30 Apr 2017)
- unit1604: fixed indentation

- unit1604: fixed compilation under Windows, broken in the previous commit

- tests: fixed OOM handling of unit tests to abort test
  
  It's dangerous to continue to run the test when a memory alloc fails.

Marcel Raad (29 Apr 2017)
- curl_rtmp: fix missing-variable-declarations warnings
  
  clang complains:
  
  curl_rtmp.c:61:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmp' [-Werror,-Wmissing-variable-declarations]
  curl_rtmp.c:81:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpt' [-Werror,-Wmissing-variable-declarations]
  curl_rtmp.c:101:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpe' [-Werror,-Wmissing-variable-declarations]
  curl_rtmp.c:121:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpte' [-Werror,-Wmissing-variable-declarations]
  curl_rtmp.c:141:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmps' [-Werror,-Wmissing-variable-declarations]
  curl_rtmp.c:161:27: error: no previous extern declaration for non-static variable 'Curl_handler_rtmpts' [-Werror,-Wmissing-variable-declarations]
  
  Fix this by including the header file.

Dan Fandrich (29 Apr 2017)
- url: fixed a memory leak on OOM while setting CURLOPT_BUFFERSIZE

- tests: added --remote-time tests for remaining protocols that support it

- runtests.pl: support multiline <postcheck> commands

- tool_operate: use utimes instead of obsolescent utime when available

- test1443: test --remote-time

- http-proxy: removed unused argument in CURL_DISABLE_PROXY case
  
  Missed in commit 55c3c02e

Daniel Stenberg (27 Apr 2017)
- cookie_interface.c: changed the other domain to example.com too

- cookie_interface.c: fix cookie domain so the example works

Dan Fandrich (26 Apr 2017)
- Makefile: fix make dist
  
  Commit 80a87e8a broke 'make dist' as it can't handle installing from
  absolute target names. Rearranged the dependencies so the absolute name
  is used for building but the relative name is use for distributing.

Marcel Raad (26 Apr 2017)
- lib: remove unused code
  
  This fixes the following clang warnings:
  macro is not used [-Wunused-macros]
  will never be executed [-Wunreachable-code]
  
  Closes https://github.com/curl/curl/pull/1448

Daniel Stenberg (26 Apr 2017)
- http-proxy: remove unused argument from Curl_proxyCONNECT()

- [Martin Kepplinger brought this change]

  url: declare get_protocol_family() static
  
  get_protocol_family() is not defined static even though there is a
  static local forward declaration. Let's simply make the definition match
  it's declaration.
  
  Bug: https://curl.haxx.se/mail/lib-2017-04/0127.html

- examples: ftpuploadfrommem.c
  
  Uploads data to an FTP site, directly from memory.
  
  Closes #1451

Kamil Dudka (25 Apr 2017)
- nss: load libnssckbi.so if no other trust is specified
  
  The module contains a more comprehensive set of trust information than
  supported by nss-pem, because libnssckbi.so also includes information
  about distrusted certificates.
  
  Reviewed-by: Kai Engert
  Closes #1414

- nss: factorize out nss_{un,}load_module to separate fncs
  
  No change of behavior is intended by this commit.

- nss: do not leak PKCS #11 slot while loading a key
  
  It could prevent nss-pem from being unloaded later on.
  
  Bug: https://bugzilla.redhat.com/1444860

Marcel Raad (25 Apr 2017)
- typecheck-gcc: fix _curl_is_slist_info
  
  Info values starting with CURLINFO_SOCKET expect a curl_socket_t, not a
  curl_slist argument.
  
  This fixes the following GCC warning when building the examples with
  --enable-optimize:
  
  ../../include/curl/typecheck-gcc.h:126:42: warning: call to
  ‘_curl_easy_getinfo_err_curl_slist’ declared with attribute warning:
  curl_easy_getinfo expects a pointer to 'struct curl_slist *' for this
  info [enabled by default]
  sendrecv.c:90:11: note: in expansion of macro ‘curl_easy_getinfo’
  res = curl_easy_getinfo(curl, CURLINFO_ACTIVESOCKET, &sockfd);
  
  Closes https://github.com/curl/curl/pull/1447

Daniel Stenberg (25 Apr 2017)
- curl: set a 100K buffer size by default
  
  Test command 'time curl http://localhost/80GB -so /dev/null' on a Debian
  Linux.
  
  Before (middle performing run out 9):
  
   real    0m28.078s
   user    0m11.240s
   sys     0m12.876s
  
  After (middle performing run out 9)
  
   real    0m26.356s (93.9%)
   user    0m5.324s  (47.4%)
   sys     0m8.368s  (65.0%)
  
  Also, doing SFTP over a 200 millsecond latency link is now about 6 times
  faster.
  
  Closes #1446

- transfer: remove 'uploadbuf' pointer and cleanup readwrite_upload()
  
  The data->req.uploadbuf struct member served no good purpose, instead we
  use ->state.uploadbuffer directly. It makes it clearer in the code which
  buffer that's being used.
  
  Removed the 'SingleRequest *' argument from the readwrite_upload() proto
  as it can be derived from the Curl_easy struct. Also made the code in
  the readwrite_upload() function use the 'k->' shortcut to all references
  to struct fields in 'data->req', which previously was made with a mix of
  both.

Jay Satiro (25 Apr 2017)
- configure: stop prepending to LDFLAGS, CPPFLAGS
  
  - Change prepends to appends because user's LDFLAGS and CPPFLAGS should
    always come first so they're searched before ours.
  
  Bug: https://github.com/curl/curl/issues/1420
  Reported-by: Helmut K. C. Tessarek

Marcel Raad (25 Apr 2017)
- if2ip: fix -Wcast-align warning
  
  Follow-up to 119037325de02579f5c58256ca2ed2a0aa592c86, which fixed the
  warning in the HAVE_GETIFADDRS block, but not in the
  HAVE_IOCTL_SIOCGIFADDR block.

Dan Fandrich (24 Apr 2017)
- Makefile: avoid use of GNU-specific form of $<
  
  $< is only allowed in implicit rules in some non-GNU makes (e.g. BSD,
  AIX) so avoid use elsewhere by referencing the dependent curl.1 file
  directly instead. This is somewhat tricky because the file is supplied
  in the packaged tar ball (but not in git) but must still be able to be
  rebuilt when its dependencies change. The right thing must happen in
  both tar ball and git source trees, as well as in both in-tree and
  out-of-tree builds.

Kamil Dudka (24 Apr 2017)
- nss: adapt to the new Curl_llist API
  
  This commit fixes compilation failure caused by
  cbae73e1dd95946597ea74ccb580c30f78e3fa73.

Marcel Raad (24 Apr 2017)
- curl-compilers.m4: accept -Og and -Ofast GCC flags
  
  -Og, introduced in GCC 4.8, optimizes for debugging experience.
  -Ofast, introduced in GCC 4.7, builds on -O3 and enables further
  optimizations breaking strict standards compliance.
  When specified in CFLAGS, these were always overridden by -O0 or -O2.
  Fix this by adding them to flags_opt_all.
  
  Ref: https://gcc.gnu.org/onlinedocs/gcc-4.8.0/gcc/Optimize-Options.html
  Ref: https://github.com/curl/curl/pull/1404#issuecomment-296401570
  Closes https://github.com/curl/curl/pull/1440

Daniel Stenberg (24 Apr 2017)
- RELEASE-NOTES: synced with c68fed875

- configure: fix the -ldl check for openssl, add -lpthread check
  
  The check for if -ldl is needed to build with (a statically built)
  openssl was broken. This repairs the check, and adds a check for
  -lpthread as well since OpenSSL 1.1.0+ does in fact require -lpthread so
  only adding -ldl for a static openssl build is no longer enough.
  
  Reported-by: Jay Satiro
  Ref: #1426
  Closes #1427

- llist: fix a comment after cbae73e1dd9
  
  Pointed-it-by: Kevin Ji
  URL: https://github.com/curl/curl/commit/cbae73e1dd95946597ea74ccb580c30f78e3fa73#commitcomment-21872622

Jay Satiro (22 Apr 2017)
- schannel: Don't treat encrypted partial record as pending data
  
  - Track when the cached encrypted data contains only a partial record
    that can't be decrypted without more data (SEC_E_INCOMPLETE_MESSAGE).
  
  - Change Curl_schannel_data_pending to return false in such a case.
  
  Other SSL libraries have pending data functions that behave similarly.
  
  Ref: https://github.com/curl/curl/pull/1387
  
  Closes https://github.com/curl/curl/pull/1392

Daniel Stenberg (22 Apr 2017)
- [Alan Jenkins brought this change]

  multi: clarify condition in curl_multi_wait
  
  `if(nfds || extra_nfds) {` is followed by `malloc(nfds * ...)`.
  
  If `extra_fs` could be non-zero when `nfds` was zero, then we have
  `malloc(0)` which is allowed to return `NULL`. But, malloc returning
  NULL can be confusing. In this code, the next line would treat the NULL
  as an allocation failure.
  
  It turns out, if `nfds` is zero then `extra_nfds` must also be zero.
  The final value of `nfds` includes `extra_nfds`.  So the test for
  `extra_nfds` is redundant.  It can only confuse the reader.
  
  Closes #1439

Marcel Raad (22 Apr 2017)
- lib: fix maybe-uninitialized warnings
  
  With -Og, GCC complains:
  
  easy.c:628:7: error: ‘mcode’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  
  ../lib/strcase.h:35:29: error: ‘tok_buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  vauth/digest.c:208:9: note: ‘tok_buf’ was declared here
  
  ../lib/strcase.h:35:29: error: ‘tok_buf’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  vauth/digest.c:566:15: note: ‘tok_buf’ was declared here
  
  Fix this by initializing the variables.

Dan Fandrich (22 Apr 2017)
- gnutls: removed some code when --disable-verbose is configured
  
  This reduces the binary size and fixes a compile warning.

Daniel Stenberg (22 Apr 2017)
- llist: no longer uses malloc
  
  The 'list element' struct now has to be within the data that is being
  added to the list. Removes 16.6% (tiny) mallocs from a simple HTTP
  transfer. (96 => 80)
  
  Also removed return codes since the llist functions can't fail now.
  
  Test 1300 updated accordingly.
  
  Closes #1435

Marcel Raad (21 Apr 2017)
- typecheck-gcc: handle function pointers properly
  
  All the callbacks passed to curl_easy_setopt are defined as function
  pointers. The possibility to pass both functions and function pointers
  was handled for the callbacks that typecheck-gcc.h defined as
  compatible, but not for the public callback types themselves.
  
  This makes all compatible callback types defined in typecheck-gcc.h
  function pointers too and checks all functions uniformly with
  _curl_callback_compatible, which handles both functions and function
  pointers.
  
  A symptom of the problem was a warning in tool_operate.c with
  --disable-libcurl-option and without --enable-debug as that file
  passes the callback functions to curl_easy_setopt directly.
  
  Fixes https://github.com/curl/curl/issues/1403
  Closes https://github.com/curl/curl/pull/1404

Dan Fandrich (21 Apr 2017)
- mbedtls: enable NTLM (& SMB) even if MD4 support is unavailable
  
  In that case, use libcurl's internal MD4 routine. This fixes tests 1013
  and 1014 which were failing due to configure assuming NTLM and SMB were
  always available whenever mbed TLS was in use (which is now true).

Daniel Stenberg (21 Apr 2017)
- tests: remove the html and PDF versions from the tarball

- openssl: fix memory leak in servercert
  
  ... when failing to get the server certificate.

- Revert "src/Makefile.am: avoid explicit $<"
  
  This reverts commit 5b4cbcf11d5100ff793a8e9edbaa6fe1fc7495f5.
  
  Since it broke out-of-tree builds from tarballs. See discussion in #1432

- bump: start working on next release

- src/Makefile.am: avoid explicit $<
  
  ... since apparently "BSD make" doesn't support it.
  
  Reported-by: Thomas Klausner
  Fixes #1432

Version 7.54.0 (19 Apr 2017)

Daniel Stenberg (19 Apr 2017)
- THANKS: add contributors from 7.54.0 release notes

- RELEASE-NOTES: curl 7.54.0

Marcel Raad (18 Apr 2017)
- nss: fix MinGW compiler warnings
  
  This fixes 3 warnings issued by MinGW:
  1. PR_ImportTCPSocket actually has a paramter of type PROsfd instead of
  PRInt32, which is 64 bits on Windows. Fixed this by including the
  corresponding header file instead of redeclaring the function, which is
  supported even though it is in the private include folder. [1]
  2. In 64-bit mode, size_t is 64 bits while CK_ULONG is 32 bits, so an explicit
  narrowing cast is needed.
  3. Curl_timeleft returns time_t instead of long since commit
  21aa32d30dbf319f2d336e0cb68d3a3235869fbb.
  
  [1] https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSPR/Reference/PR_ImportTCPSocket
  
  Closes https://github.com/curl/curl/pull/1393

Daniel Stenberg (18 Apr 2017)
- [Jay Satiro brought this change]

  TLS: Fix switching off SSL session id when client cert is used
  
  Move the sessionid flag to ssl_primary_config so that ssl and proxy_ssl
  will each have their own sessionid flag.
  
  Regression since HTTPS-Proxy support was added in cb4e2be. Prior to that
  this issue had been fixed in 247d890, CVE-2016-5419.
  
  Bug: https://github.com/curl/curl/issues/1341
  Reported-by: lijian996@users.noreply.github.com
  
  The new incarnation of this bug is called CVE-2017-7468 and is documented
  here: https://curl.haxx.se/docs/adv_20170419.html

- [David Benjamin brought this change]

  openssl: don't try to print nonexistant peer private keys
  
  X.509 certificates carry public keys, not private keys. Fields
  corresponding to the private half of the key will always be NULL.
  
  Closes #1425

- [David Benjamin brought this change]

  openssl: fix thread-safety bugs in error-handling
  
  ERR_error_string with NULL parameter is not thread-safe. The library
  writes the string into some static buffer. Two threads doing this at
  once may clobber each other and run into problems. Switch to
  ERR_error_string_n which avoids this problem and is explicitly
  bounds-checked.
  
  Also clean up some remnants of OpenSSL 0.9.5 around here. A number of
  comments (fixed buffer size, explaining that ERR_error_string_n was
  added in a particular version) date to when ossl_strerror tried to
  support pre-ERR_error_string_n OpenSSLs.
  
  Closes #1424

- [David Benjamin brought this change]

  openssl: make SSL_ERROR_to_str more future-proof
  
  Rather than making assumptions about the values, use a switch-case.
  
  Closes #1424

- [Daniel Gustafsson brought this change]

  code: fix typos and style in comments
  
  A few random typos, and minor whitespace cleanups, found in comments
  while reading code.
  
  Closes #1423

Marcel Raad (17 Apr 2017)
- extern-scan.pl: strip trailing CR
  
  This makes test 1135 pass with CRLF checkouts.
  
  Ref: https://github.com/curl/curl/pull/1344#issuecomment-289243166
  Closes https://github.com/curl/curl/pull/1422

- configure.ac: ignore CR after version numbers
  
  Ignore everything after the version numbers in LIBCURL_VERSION and
  LIBCURL_VERSION_NUM to ged rid of the extra CR character.
  This makes tests 1022 and 1023 pass on Linux with a CRLF checkout.
  
  Ref: https://github.com/curl/curl/pull/1344#issuecomment-289243166
  Closes https://github.com/curl/curl/pull/1422

- .gitattributes: force shell scripts to LF
  
  Bash on Linux errors out on CR characters.
  This makes tests 1221 and 1222 pass on Linux with a CRLF checkout.
  
  Ref: https://github.com/curl/curl/pull/1344#issuecomment-289243166
  Closes https://github.com/curl/curl/pull/1422

- unit1303: fix compiler warning
  
  MinGW-w64 complains:
  warning: conversion to 'long int' from 'time_t {aka long long int}' may
  alter its value [-Wconversion]
  Fix this by using the correct type.

Daniel Stenberg (16 Apr 2017)
- RELEASE-NOTES: synced with 1451271e0

- [Larry Stefani brought this change]

  http2: fix handle leak in error path
  
  Add missing newhandle free call in push_promise().
  
  Closes #1416

- [Larry Stefani brought this change]

  mbedtls: fix memory leak in error path
  
  Add missing our_ssl_sessionid free call in mbed_connect_step3().
  
  Closes #1417

Marcel Raad (15 Apr 2017)
- curl-compilers.m4: turn implicit function declarations into errors
  
  This adds -Werror-implicit-function-declaration for GCC 2.95+ so that
  these errors are visible at the point where they occur instead of only
  at link time.
  Implicit function declarations are illegal in C99 and C++ anyway, and
  the same warning has been turned into an error for ICC in commit
  3072c5b8a127057aa922b7c51051bbb4a630b091.
  
  Ref: https://gcc.gnu.org/onlinedocs/gcc-2.95.2/gcc_2.html#SEC8
  Ref: https://curl.haxx.se/mail/lib-2017-04/0001.html
  Closes https://github.com/curl/curl/pull/1419

- test1541: also test for CURL_PULL_WS2TCPIP_H
  
  Ref: https://github.com/curl/curl/issues/1408
  Closes https://github.com/curl/curl/pull/1412

- tests/server/util: prefer <poll.h> over <sys/poll.h>
  
  Follow-up to aa573c3c55cda72ec5ef677d87f6f46a53385f0c
  
  Ref: https://github.com/curl/curl/pull/1406

Daniel Stenberg (11 Apr 2017)
- Curl_expire_latest: ignore already expired timers
  
  If the existing timer is still in there but has expired, the new timer
  should be added.
  
  Reported-by: Rainer Canavan
  Bug: https://curl.haxx.se/mail/lib-2017-04/0030.html
  Closes #1407

- system.h: fix mingw section
  
  Reported-by: Marcel Raad
  Fixes #1408
  Closes #1409

Marcel Raad (11 Apr 2017)
- polarssl: unbreak build with versions < 1.3.8
  
  ssl_session_init was only introduced in version 1.3.8, the penultimate
  version. The function only contains a memset, so replace it with that.
  
  Suggested-by: Jay Satiro
  Fixes https://github.com/curl/curl/issues/1401

- poll: prefer <poll.h> over <sys/poll.h>
  
  The POSIX standard location is <poll.h>. Using <sys/poll.h> results in
  warning spam when using the musl standard library.
  
  Closes https://github.com/curl/curl/pull/1406

Daniel Stenberg (10 Apr 2017)
- [Alexis La Goutte brought this change]

  openssl: fix this statement may fall through [-Wimplicit-fallthrough=]
  
  Closes #1402

Kamil Dudka (10 Apr 2017)
- nss: load CA certificates even with --insecure
  
  ... because they may include an intermediate certificate for a client
  certificate and the intermediate certificate needs to be presented to
  the server, no matter if we verify the peer or not.
  
  Reported-by: thraidh
  Closes #851

Daniel Stenberg (10 Apr 2017)
- RELEASE-NOTES: synced with f9d1e9a27f7e1

Dan Fandrich (10 Apr 2017)
- libcurl-thread.3: fixed a bad macro that caused test 1140 to fail

Daniel Stenberg (9 Apr 2017)
- libcurl-thread.3: also mention threaded-resolver
  
  Reported-by: Alex Bligh
  Bug: https://curl.haxx.se/mail/lib-2017-04/0044.html

- .github/stale.yml: enable the stale bot
  
  Issues and PRs with no activity for 180 days will get marked as stale,
  and if no further activity happens within 14 more days, the issue gets
  closed.
  
  This follows our established policy of not letting stalled bugs "get in
  the way": https://curl.haxx.se/docs/bugs.html#Closing_off_stalled_bugs
  
  Closes #1398

Jay Satiro (8 Apr 2017)
- CURLINFO_SCHEME.3: fix variable type
  
  - Change documented param type to char ** from incorrect long *.

Marcel Raad (8 Apr 2017)
- INSTALL.md: fix secure transport configure arguments
  
  --without-ssl is needed instead of --with-winssl.

- vtls: fix unreferenced variable warnings
  
  ... by moving the variables into the correct #ifdef block.

Daniel Stenberg (7 Apr 2017)
- BUGS: "Bugs in old versions"

- system.h: add section for tcc
  
  Closes #1397

Marcel Raad (7 Apr 2017)
- schannel: fix compiler warnings
  
  When UNICODE is not defined, the Curl_convert_UTF8_to_tchar macro maps
  directly to its argument. As it is declared as a pointer to const and
  InitializeSecurityContext expects a pointer to non-const, both MSVC and MinGW
  issue a warning about implicitly casting away the const. Fix this by declaring
  the variables as pointers to non-const.
  
  Closes https://github.com/curl/curl/pull/1394

- [Isaac Boukris brought this change]

  sspi: print out InitializeSecurityContext() error message
  
  Reported-by: Carsten (talksinmath)
  
  Fixes #1384
  Closes #1395

- gtls: fix compiler warning
  
  Curl_timeleft returns time_t instead of long since commit
  21aa32d30dbf319f2d336e0cb68d3a3235869fbb.

Daniel Stenberg (6 Apr 2017)
- test1606: verify speedcheck

- low_speed_limit: improved function for longer time periods
  
  Previously, periods of fast speed between periods of slow speed would
  not count and could still erroneously trigger a timeout.
  
  Reported-by: Paul Harris
  Fixes #1345
  Closes #1390

- system.h: set sizeof long to 4 on "default 32 bit" systems
  
  Triggered a test failure on test 1541 for the build known as
  "Linux 4.4 i686 tcc 0.9.26 glibc 2.20"

Marcel Raad (6 Apr 2017)
- nss: fix build after e60fe20fdf94e829ba5fce33f7a9d6c281149f7d
  
  Curl_llist_alloc is now Curl_llist_init.
  
  Closes https://github.com/curl/curl/pull/1391

Daniel Stenberg (6 Apr 2017)
- INSTALL.cmake: more problems
  
  and mention specific issues where they are discussed

- test1541: ignore the curl_off_t variable type name comparison
  
  ... the sizes and the formatting strings are what's really important and
  avoids problems with int64_t vs "long long".
  
  Bug: https://curl.haxx.se/mail/lib-2017-04/0019.html

- Revert "configure: prefer 'long long' to int64_t for curl_off_t"
  
  This reverts commit 81284374bf3c670d2050f8562edeb69f060b07cc.
  
  Due to mingw32 brekage.

Marcel Raad (5 Apr 2017)
- tool_operate: fix MinGW compiler warning
  
  MinGW complains:
  tool_operate.c:197:15: error: comparison is always true due to limited range
  of data type [-Werror=type-limits]
  
  Fix this by only doing the comparison if 'long' is large enough to hold the
  constant it is compared with.
  
  Closes https://github.com/curl/curl/pull/1378

- tool_operate: move filetime code to its own function
  
  Ref: https://github.com/curl/curl/pull/1378

Daniel Stenberg (5 Apr 2017)
- configure: prefer 'long long' to int64_t for curl_off_t
  
  Since it is a native type and it makes it less complicated to find a
  matching one in system.h
  
  Bug: https://curl.haxx.se/mail/lib-2017-04/0010.html
  Reported-by: Dan Fandrich
  
  Closes #1388

- [Dániel Bakai brought this change]

  tests: added test for Curl_splaygetbest to unit1309
  
  This checks the new behavior of Curl_splaygetbest, so that the smallest
  node not larger than the key is removed, and FIFO behavior is kept even
  when there are multiple nodes with the same key.
  
  Closes #1358

- [Dániel Bakai brought this change]

  multi: fix queueing of pending easy handles
  
  Multi handles repeatedly invert the queue of pending easy handles when
  used with CURLMOPT_MAX_TOTAL_CONNECTIONS. This is caused by a multistep
  process involving Curl_splaygetbest and violates the FIFO property of
  the multi handle.
  This patch fixes this issue by redefining the "best" node in the
  context of timeouts as the "smallest not larger than now", and
  implementing the necessary data structure modifications to do this
  effectively, namely:
   - splay nodes with the same key are now stored in a doubly-linked
     circular list instead of a non-circular one to enable O(1)
     insertion to the tail of the list
   - Curl_splayinsert inserts nodes with the same key to the tail of
     the same list
   - in case of multiple nodes with the same key, the one on the head of
     the list gets selected

Marcel Raad (4 Apr 2017)
- tool: fix Windows Unicode build
  
  ... by explicitly calling the ANSI versions of Windows API functions where
  required.

Daniel Stenberg (4 Apr 2017)
- [Martin Kepplinger brought this change]

  curl_sasl: declare mechtable static
  
  struct mechtable is only used locally here. It can be declared static.

Jay Satiro (4 Apr 2017)
- [Antti Hätälä brought this change]

  url: don't free postponed data on connection reuse
  
  - Don't free postponed data on a connection that will be reused since
    doing so can cause data loss when pipelining.
  
  Only Windows builds are affected by this.
  
  Closes https://github.com/curl/curl/issues/1380

Daniel Stenberg (4 Apr 2017)
- RELEASE-NOTES: synced with 4f2e348f9b42c69c480

- hash: move key into hash struct to reduce mallocs
  
  This removes one tiny malloc for each hash struct allocated. In a simple
  case like "curl localhost", this save three mallocs.
  
  Closes #1376

- llist: replace Curl_llist_alloc with Curl_llist_init
  
  No longer allocate the curl_llist head struct for lists separately.
  
  Removes 17 (15%) tiny allocations in a normal "curl localhost" invoke.
  
  closes #1381

Jay Satiro (4 Apr 2017)
- easy: silence compiler warning
  
  Safe to silence warning adding time delta of poll, which can trigger on
  Windows since sizeof time_t > sizeof long.
  
  warning C4244: '+=' : conversion from 'time_t' to 'long', possible loss
  of data

Daniel Stenberg (4 Apr 2017)
- [Richlv brought this change]

  docs: minor typo in write-out.d
  
  Closes #1382

- include: curl/system.h is a run-time version of curlbuild.h
  
  system.h is aimed to replace curlbuild.h at a later point in time when
  we feel confident system.h works sufficiently well.
  
  curl/system.h is currently used in parallel with curl/curlbuild.h
  
  curl/system.h determines a data sizes, data types and include file
  status based on available preprocessor defines instead of getting
  generated at build-time. This, in order to avoid relying on a build-time
  generated file that makes it complicated to do 32 and 64 bit bields from
  the same installed set of headers.
  
  Test 1541 verifies that system.h comes to the same conclusion that
  curlbuild.h offers.
  
  Closes #1373

- multi: make curl_multi_wait avoid malloc in the typical case
  
  When only a few additional file descriptors are used, avoid the malloc.
  
  Closes #1377