[337] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | #include "curl_setup.h"
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| 24 |
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| 25 | /*
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| 26 | * See comment in curl_memory.h for the explanation of this sanity check.
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| 27 | */
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| 28 |
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| 29 | #ifdef CURLX_NO_MEMORY_CALLBACKS
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| 30 | #error "libcurl shall not ever be built with CURLX_NO_MEMORY_CALLBACKS defined"
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| 31 | #endif
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| 32 |
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| 33 | #ifdef HAVE_NETINET_IN_H
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| 34 | #include <netinet/in.h>
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| 35 | #endif
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| 36 | #ifdef HAVE_NETDB_H
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| 37 | #include <netdb.h>
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| 38 | #endif
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| 39 | #ifdef HAVE_ARPA_INET_H
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| 40 | #include <arpa/inet.h>
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| 41 | #endif
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| 42 | #ifdef HAVE_NET_IF_H
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| 43 | #include <net/if.h>
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| 44 | #endif
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| 45 | #ifdef HAVE_SYS_IOCTL_H
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| 46 | #include <sys/ioctl.h>
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| 47 | #endif
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| 48 |
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| 49 | #ifdef HAVE_SYS_PARAM_H
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| 50 | #include <sys/param.h>
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| 51 | #endif
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| 52 |
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| 53 | #include "urldata.h"
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| 54 | #include <curl/curl.h>
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| 55 | #include "transfer.h"
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| 56 | #include "vtls/vtls.h"
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| 57 | #include "url.h"
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| 58 | #include "getinfo.h"
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| 59 | #include "hostip.h"
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| 60 | #include "share.h"
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| 61 | #include "strdup.h"
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| 62 | #include "progress.h"
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| 63 | #include "easyif.h"
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| 64 | #include "select.h"
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| 65 | #include "sendf.h" /* for failf function prototype */
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| 66 | #include "connect.h" /* for Curl_getconnectinfo */
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| 67 | #include "slist.h"
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| 68 | #include "amigaos.h"
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| 69 | #include "non-ascii.h"
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| 70 | #include "warnless.h"
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| 71 | #include "multiif.h"
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| 72 | #include "sigpipe.h"
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| 73 | #include "ssh.h"
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| 74 | #include "setopt.h"
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| 75 |
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| 76 | /* The last 3 #include files should be in this order */
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| 77 | #include "curl_printf.h"
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| 78 | #include "curl_memory.h"
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| 79 | #include "memdebug.h"
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| 80 |
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| 81 | void Curl_version_init(void);
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| 82 |
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| 83 | /* win32_cleanup() is for win32 socket cleanup functionality, the opposite
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| 84 | of win32_init() */
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| 85 | static void win32_cleanup(void)
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| 86 | {
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| 87 | #ifdef USE_WINSOCK
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| 88 | WSACleanup();
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| 89 | #endif
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| 90 | #ifdef USE_WINDOWS_SSPI
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| 91 | Curl_sspi_global_cleanup();
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| 92 | #endif
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| 93 | }
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| 94 |
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| 95 | /* win32_init() performs win32 socket initialization to properly setup the
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| 96 | stack to allow networking */
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| 97 | static CURLcode win32_init(void)
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| 98 | {
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| 99 | #ifdef USE_WINSOCK
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| 100 | WORD wVersionRequested;
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| 101 | WSADATA wsaData;
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| 102 | int res;
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| 103 |
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| 104 | #if defined(ENABLE_IPV6) && (USE_WINSOCK < 2)
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| 105 | Error IPV6_requires_winsock2
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| 106 | #endif
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| 107 |
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| 108 | wVersionRequested = MAKEWORD(USE_WINSOCK, USE_WINSOCK);
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| 109 |
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| 110 | res = WSAStartup(wVersionRequested, &wsaData);
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| 111 |
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| 112 | if(res != 0)
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| 113 | /* Tell the user that we couldn't find a useable */
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| 114 | /* winsock.dll. */
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| 115 | return CURLE_FAILED_INIT;
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| 116 |
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| 117 | /* Confirm that the Windows Sockets DLL supports what we need.*/
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| 118 | /* Note that if the DLL supports versions greater */
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| 119 | /* than wVersionRequested, it will still return */
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| 120 | /* wVersionRequested in wVersion. wHighVersion contains the */
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| 121 | /* highest supported version. */
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| 122 |
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| 123 | if(LOBYTE(wsaData.wVersion) != LOBYTE(wVersionRequested) ||
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| 124 | HIBYTE(wsaData.wVersion) != HIBYTE(wVersionRequested) ) {
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| 125 | /* Tell the user that we couldn't find a useable */
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| 126 |
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| 127 | /* winsock.dll. */
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| 128 | WSACleanup();
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| 129 | return CURLE_FAILED_INIT;
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| 130 | }
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| 131 | /* The Windows Sockets DLL is acceptable. Proceed. */
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| 132 | #elif defined(USE_LWIPSOCK)
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| 133 | lwip_init();
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| 134 | #endif
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| 135 |
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| 136 | #ifdef USE_WINDOWS_SSPI
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| 137 | {
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| 138 | CURLcode result = Curl_sspi_global_init();
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| 139 | if(result)
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| 140 | return result;
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| 141 | }
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| 142 | #endif
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| 143 |
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| 144 | return CURLE_OK;
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| 145 | }
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| 146 |
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| 147 | /* true globals -- for curl_global_init() and curl_global_cleanup() */
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| 148 | static unsigned int initialized;
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| 149 | static long init_flags;
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| 150 |
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| 151 | /*
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| 152 | * strdup (and other memory functions) is redefined in complicated
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| 153 | * ways, but at this point it must be defined as the system-supplied strdup
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| 154 | * so the callback pointer is initialized correctly.
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| 155 | */
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| 156 | #if defined(_WIN32_WCE)
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| 157 | #define system_strdup _strdup
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| 158 | #elif !defined(HAVE_STRDUP)
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| 159 | #define system_strdup curlx_strdup
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| 160 | #else
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| 161 | #define system_strdup strdup
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| 162 | #endif
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| 163 |
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| 164 | #if defined(_MSC_VER) && defined(_DLL) && !defined(__POCC__)
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| 165 | # pragma warning(disable:4232) /* MSVC extension, dllimport identity */
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| 166 | #endif
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| 167 |
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| 168 | #ifndef __SYMBIAN32__
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| 169 | /*
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| 170 | * If a memory-using function (like curl_getenv) is used before
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| 171 | * curl_global_init() is called, we need to have these pointers set already.
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| 172 | */
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| 173 | curl_malloc_callback Curl_cmalloc = (curl_malloc_callback)malloc;
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| 174 | curl_free_callback Curl_cfree = (curl_free_callback)free;
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| 175 | curl_realloc_callback Curl_crealloc = (curl_realloc_callback)realloc;
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| 176 | curl_strdup_callback Curl_cstrdup = (curl_strdup_callback)system_strdup;
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| 177 | curl_calloc_callback Curl_ccalloc = (curl_calloc_callback)calloc;
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| 178 | #if defined(WIN32) && defined(UNICODE)
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| 179 | curl_wcsdup_callback Curl_cwcsdup = (curl_wcsdup_callback)_wcsdup;
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| 180 | #endif
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| 181 | #else
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| 182 | /*
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| 183 | * Symbian OS doesn't support initialization to code in writable static data.
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| 184 | * Initialization will occur in the curl_global_init() call.
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| 185 | */
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| 186 | curl_malloc_callback Curl_cmalloc;
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| 187 | curl_free_callback Curl_cfree;
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| 188 | curl_realloc_callback Curl_crealloc;
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| 189 | curl_strdup_callback Curl_cstrdup;
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| 190 | curl_calloc_callback Curl_ccalloc;
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| 191 | #endif
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| 192 |
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| 193 | #if defined(_MSC_VER) && defined(_DLL) && !defined(__POCC__)
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| 194 | # pragma warning(default:4232) /* MSVC extension, dllimport identity */
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| 195 | #endif
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| 196 |
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| 197 | /**
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| 198 | * curl_global_init() globally initializes curl given a bitwise set of the
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| 199 | * different features of what to initialize.
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| 200 | */
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| 201 | static CURLcode global_init(long flags, bool memoryfuncs)
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| 202 | {
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| 203 | if(initialized++)
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| 204 | return CURLE_OK;
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| 205 |
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| 206 | if(memoryfuncs) {
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| 207 | /* Setup the default memory functions here (again) */
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| 208 | Curl_cmalloc = (curl_malloc_callback)malloc;
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| 209 | Curl_cfree = (curl_free_callback)free;
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| 210 | Curl_crealloc = (curl_realloc_callback)realloc;
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| 211 | Curl_cstrdup = (curl_strdup_callback)system_strdup;
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| 212 | Curl_ccalloc = (curl_calloc_callback)calloc;
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| 213 | #if defined(WIN32) && defined(UNICODE)
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| 214 | Curl_cwcsdup = (curl_wcsdup_callback)_wcsdup;
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| 215 | #endif
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| 216 | }
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| 217 |
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| 218 | if(!Curl_ssl_init()) {
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| 219 | DEBUGF(fprintf(stderr, "Error: Curl_ssl_init failed\n"));
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| 220 | return CURLE_FAILED_INIT;
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| 221 | }
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| 222 |
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| 223 | if(flags & CURL_GLOBAL_WIN32)
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| 224 | if(win32_init()) {
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| 225 | DEBUGF(fprintf(stderr, "Error: win32_init failed\n"));
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| 226 | return CURLE_FAILED_INIT;
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| 227 | }
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| 228 |
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| 229 | #ifdef __AMIGA__
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| 230 | if(!Curl_amiga_init()) {
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| 231 | DEBUGF(fprintf(stderr, "Error: Curl_amiga_init failed\n"));
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| 232 | return CURLE_FAILED_INIT;
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| 233 | }
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| 234 | #endif
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| 235 |
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| 236 | #ifdef NETWARE
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| 237 | if(netware_init()) {
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| 238 | DEBUGF(fprintf(stderr, "Warning: LONG namespace not available\n"));
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| 239 | }
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| 240 | #endif
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| 241 |
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| 242 | if(Curl_resolver_global_init()) {
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| 243 | DEBUGF(fprintf(stderr, "Error: resolver_global_init failed\n"));
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| 244 | return CURLE_FAILED_INIT;
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| 245 | }
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| 246 |
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| 247 | (void)Curl_ipv6works();
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| 248 |
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| 249 | #if defined(USE_LIBSSH2) && defined(HAVE_LIBSSH2_INIT)
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| 250 | if(libssh2_init(0)) {
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| 251 | DEBUGF(fprintf(stderr, "Error: libssh2_init failed\n"));
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| 252 | return CURLE_FAILED_INIT;
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| 253 | }
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| 254 | #endif
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| 255 |
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| 256 | if(flags & CURL_GLOBAL_ACK_EINTR)
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| 257 | Curl_ack_eintr = 1;
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| 258 |
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| 259 | init_flags = flags;
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| 260 |
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| 261 | Curl_version_init();
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| 262 |
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| 263 | return CURLE_OK;
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| 264 | }
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| 265 |
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| 266 |
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| 267 | /**
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| 268 | * curl_global_init() globally initializes curl given a bitwise set of the
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| 269 | * different features of what to initialize.
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| 270 | */
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| 271 | CURLcode curl_global_init(long flags)
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| 272 | {
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| 273 | return global_init(flags, TRUE);
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| 274 | }
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| 275 |
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| 276 | /*
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| 277 | * curl_global_init_mem() globally initializes curl and also registers the
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| 278 | * user provided callback routines.
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| 279 | */
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| 280 | CURLcode curl_global_init_mem(long flags, curl_malloc_callback m,
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| 281 | curl_free_callback f, curl_realloc_callback r,
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| 282 | curl_strdup_callback s, curl_calloc_callback c)
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| 283 | {
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| 284 | /* Invalid input, return immediately */
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| 285 | if(!m || !f || !r || !s || !c)
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| 286 | return CURLE_FAILED_INIT;
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| 287 |
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| 288 | if(initialized) {
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| 289 | /* Already initialized, don't do it again, but bump the variable anyway to
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| 290 | work like curl_global_init() and require the same amount of cleanup
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| 291 | calls. */
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| 292 | initialized++;
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| 293 | return CURLE_OK;
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| 294 | }
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| 295 |
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| 296 | /* set memory functions before global_init() in case it wants memory
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| 297 | functions */
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| 298 | Curl_cmalloc = m;
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| 299 | Curl_cfree = f;
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| 300 | Curl_cstrdup = s;
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| 301 | Curl_crealloc = r;
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| 302 | Curl_ccalloc = c;
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| 303 |
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| 304 | /* Call the actual init function, but without setting */
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| 305 | return global_init(flags, FALSE);
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| 306 | }
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| 307 |
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| 308 | /**
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| 309 | * curl_global_cleanup() globally cleanups curl, uses the value of
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| 310 | * "init_flags" to determine what needs to be cleaned up and what doesn't.
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| 311 | */
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| 312 | void curl_global_cleanup(void)
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| 313 | {
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| 314 | if(!initialized)
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| 315 | return;
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| 316 |
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| 317 | if(--initialized)
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| 318 | return;
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| 319 |
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| 320 | Curl_global_host_cache_dtor();
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| 321 | Curl_ssl_cleanup();
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| 322 | Curl_resolver_global_cleanup();
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| 323 |
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| 324 | if(init_flags & CURL_GLOBAL_WIN32)
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| 325 | win32_cleanup();
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| 326 |
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| 327 | Curl_amiga_cleanup();
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| 328 |
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| 329 | #if defined(USE_LIBSSH2) && defined(HAVE_LIBSSH2_EXIT)
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| 330 | (void)libssh2_exit();
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| 331 | #endif
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| 332 |
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| 333 | init_flags = 0;
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| 334 | }
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| 335 |
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| 336 | /*
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| 337 | * curl_easy_init() is the external interface to alloc, setup and init an
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| 338 | * easy handle that is returned. If anything goes wrong, NULL is returned.
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| 339 | */
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| 340 | struct Curl_easy *curl_easy_init(void)
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| 341 | {
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| 342 | CURLcode result;
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| 343 | struct Curl_easy *data;
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| 344 |
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| 345 | /* Make sure we inited the global SSL stuff */
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| 346 | if(!initialized) {
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| 347 | result = curl_global_init(CURL_GLOBAL_DEFAULT);
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| 348 | if(result) {
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| 349 | /* something in the global init failed, return nothing */
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| 350 | DEBUGF(fprintf(stderr, "Error: curl_global_init failed\n"));
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| 351 | return NULL;
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| 352 | }
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| 353 | }
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| 354 |
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| 355 | /* We use curl_open() with undefined URL so far */
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| 356 | result = Curl_open(&data);
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| 357 | if(result) {
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| 358 | DEBUGF(fprintf(stderr, "Error: Curl_open failed\n"));
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| 359 | return NULL;
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| 360 | }
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| 361 |
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| 362 | return data;
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| 363 | }
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| 364 |
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| 365 | #ifdef CURLDEBUG
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| 366 |
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| 367 | struct socketmonitor {
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| 368 | struct socketmonitor *next; /* the next node in the list or NULL */
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| 369 | struct pollfd socket; /* socket info of what to monitor */
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| 370 | };
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| 371 |
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| 372 | struct events {
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| 373 | long ms; /* timeout, run the timeout function when reached */
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| 374 | bool msbump; /* set TRUE when timeout is set by callback */
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| 375 | int num_sockets; /* number of nodes in the monitor list */
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| 376 | struct socketmonitor *list; /* list of sockets to monitor */
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| 377 | int running_handles; /* store the returned number */
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| 378 | };
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| 379 |
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| 380 | /* events_timer
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| 381 | *
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| 382 | * Callback that gets called with a new value when the timeout should be
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| 383 | * updated.
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| 384 | */
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| 385 |
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| 386 | static int events_timer(struct Curl_multi *multi, /* multi handle */
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| 387 | long timeout_ms, /* see above */
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| 388 | void *userp) /* private callback pointer */
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| 389 | {
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| 390 | struct events *ev = userp;
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| 391 | (void)multi;
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| 392 | if(timeout_ms == -1)
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| 393 | /* timeout removed */
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| 394 | timeout_ms = 0;
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| 395 | else if(timeout_ms == 0)
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| 396 | /* timeout is already reached! */
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| 397 | timeout_ms = 1; /* trigger asap */
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| 398 |
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| 399 | ev->ms = timeout_ms;
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| 400 | ev->msbump = TRUE;
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| 401 | return 0;
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| 402 | }
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| 403 |
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| 404 |
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| 405 | /* poll2cselect
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| 406 | *
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| 407 | * convert from poll() bit definitions to libcurl's CURL_CSELECT_* ones
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| 408 | */
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| 409 | static int poll2cselect(int pollmask)
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| 410 | {
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| 411 | int omask = 0;
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| 412 | if(pollmask & POLLIN)
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| 413 | omask |= CURL_CSELECT_IN;
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| 414 | if(pollmask & POLLOUT)
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| 415 | omask |= CURL_CSELECT_OUT;
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| 416 | if(pollmask & POLLERR)
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| 417 | omask |= CURL_CSELECT_ERR;
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| 418 | return omask;
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| 419 | }
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| 420 |
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| 421 |
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| 422 | /* socketcb2poll
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| 423 | *
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| 424 | * convert from libcurl' CURL_POLL_* bit definitions to poll()'s
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| 425 | */
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| 426 | static short socketcb2poll(int pollmask)
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| 427 | {
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| 428 | short omask = 0;
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| 429 | if(pollmask & CURL_POLL_IN)
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| 430 | omask |= POLLIN;
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| 431 | if(pollmask & CURL_POLL_OUT)
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| 432 | omask |= POLLOUT;
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| 433 | return omask;
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| 434 | }
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| 435 |
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| 436 | /* events_socket
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| 437 | *
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| 438 | * Callback that gets called with information about socket activity to
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| 439 | * monitor.
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| 440 | */
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| 441 | static int events_socket(struct Curl_easy *easy, /* easy handle */
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| 442 | curl_socket_t s, /* socket */
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| 443 | int what, /* see above */
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| 444 | void *userp, /* private callback
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| 445 | pointer */
|
---|
| 446 | void *socketp) /* private socket
|
---|
| 447 | pointer */
|
---|
| 448 | {
|
---|
| 449 | struct events *ev = userp;
|
---|
| 450 | struct socketmonitor *m;
|
---|
| 451 | struct socketmonitor *prev = NULL;
|
---|
| 452 |
|
---|
| 453 | #if defined(CURL_DISABLE_VERBOSE_STRINGS)
|
---|
| 454 | (void) easy;
|
---|
| 455 | #endif
|
---|
| 456 | (void)socketp;
|
---|
| 457 |
|
---|
| 458 | m = ev->list;
|
---|
| 459 | while(m) {
|
---|
| 460 | if(m->socket.fd == s) {
|
---|
| 461 |
|
---|
| 462 | if(what == CURL_POLL_REMOVE) {
|
---|
| 463 | struct socketmonitor *nxt = m->next;
|
---|
| 464 | /* remove this node from the list of monitored sockets */
|
---|
| 465 | if(prev)
|
---|
| 466 | prev->next = nxt;
|
---|
| 467 | else
|
---|
| 468 | ev->list = nxt;
|
---|
| 469 | free(m);
|
---|
| 470 | m = nxt;
|
---|
| 471 | infof(easy, "socket cb: socket %d REMOVED\n", s);
|
---|
| 472 | }
|
---|
| 473 | else {
|
---|
| 474 | /* The socket 's' is already being monitored, update the activity
|
---|
| 475 | mask. Convert from libcurl bitmask to the poll one. */
|
---|
| 476 | m->socket.events = socketcb2poll(what);
|
---|
| 477 | infof(easy, "socket cb: socket %d UPDATED as %s%s\n", s,
|
---|
| 478 | what&CURL_POLL_IN?"IN":"",
|
---|
| 479 | what&CURL_POLL_OUT?"OUT":"");
|
---|
| 480 | }
|
---|
| 481 | break;
|
---|
| 482 | }
|
---|
| 483 | prev = m;
|
---|
| 484 | m = m->next; /* move to next node */
|
---|
| 485 | }
|
---|
| 486 | if(!m) {
|
---|
| 487 | if(what == CURL_POLL_REMOVE) {
|
---|
| 488 | /* this happens a bit too often, libcurl fix perhaps? */
|
---|
| 489 | /* fprintf(stderr,
|
---|
| 490 | "%s: socket %d asked to be REMOVED but not present!\n",
|
---|
| 491 | __func__, s); */
|
---|
| 492 | }
|
---|
| 493 | else {
|
---|
| 494 | m = malloc(sizeof(struct socketmonitor));
|
---|
| 495 | if(m) {
|
---|
| 496 | m->next = ev->list;
|
---|
| 497 | m->socket.fd = s;
|
---|
| 498 | m->socket.events = socketcb2poll(what);
|
---|
| 499 | m->socket.revents = 0;
|
---|
| 500 | ev->list = m;
|
---|
| 501 | infof(easy, "socket cb: socket %d ADDED as %s%s\n", s,
|
---|
| 502 | what&CURL_POLL_IN?"IN":"",
|
---|
| 503 | what&CURL_POLL_OUT?"OUT":"");
|
---|
| 504 | }
|
---|
| 505 | else
|
---|
| 506 | return CURLE_OUT_OF_MEMORY;
|
---|
| 507 | }
|
---|
| 508 | }
|
---|
| 509 |
|
---|
| 510 | return 0;
|
---|
| 511 | }
|
---|
| 512 |
|
---|
| 513 |
|
---|
| 514 | /*
|
---|
| 515 | * events_setup()
|
---|
| 516 | *
|
---|
| 517 | * Do the multi handle setups that only event-based transfers need.
|
---|
| 518 | */
|
---|
| 519 | static void events_setup(struct Curl_multi *multi, struct events *ev)
|
---|
| 520 | {
|
---|
| 521 | /* timer callback */
|
---|
| 522 | curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, events_timer);
|
---|
| 523 | curl_multi_setopt(multi, CURLMOPT_TIMERDATA, ev);
|
---|
| 524 |
|
---|
| 525 | /* socket callback */
|
---|
| 526 | curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION, events_socket);
|
---|
| 527 | curl_multi_setopt(multi, CURLMOPT_SOCKETDATA, ev);
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 |
|
---|
| 531 | /* wait_or_timeout()
|
---|
| 532 | *
|
---|
| 533 | * waits for activity on any of the given sockets, or the timeout to trigger.
|
---|
| 534 | */
|
---|
| 535 |
|
---|
| 536 | static CURLcode wait_or_timeout(struct Curl_multi *multi, struct events *ev)
|
---|
| 537 | {
|
---|
| 538 | bool done = FALSE;
|
---|
| 539 | CURLMcode mcode = CURLM_OK;
|
---|
| 540 | CURLcode result = CURLE_OK;
|
---|
| 541 |
|
---|
| 542 | while(!done) {
|
---|
| 543 | CURLMsg *msg;
|
---|
| 544 | struct socketmonitor *m;
|
---|
| 545 | struct pollfd *f;
|
---|
| 546 | struct pollfd fds[4];
|
---|
| 547 | int numfds = 0;
|
---|
| 548 | int pollrc;
|
---|
| 549 | int i;
|
---|
| 550 | struct curltime before;
|
---|
| 551 | struct curltime after;
|
---|
| 552 |
|
---|
| 553 | /* populate the fds[] array */
|
---|
| 554 | for(m = ev->list, f = &fds[0]; m; m = m->next) {
|
---|
| 555 | f->fd = m->socket.fd;
|
---|
| 556 | f->events = m->socket.events;
|
---|
| 557 | f->revents = 0;
|
---|
| 558 | /* fprintf(stderr, "poll() %d check socket %d\n", numfds, f->fd); */
|
---|
| 559 | f++;
|
---|
| 560 | numfds++;
|
---|
| 561 | }
|
---|
| 562 |
|
---|
| 563 | /* get the time stamp to use to figure out how long poll takes */
|
---|
| 564 | before = Curl_now();
|
---|
| 565 |
|
---|
| 566 | /* wait for activity or timeout */
|
---|
| 567 | pollrc = Curl_poll(fds, numfds, (int)ev->ms);
|
---|
| 568 |
|
---|
| 569 | after = Curl_now();
|
---|
| 570 |
|
---|
| 571 | ev->msbump = FALSE; /* reset here */
|
---|
| 572 |
|
---|
| 573 | if(0 == pollrc) {
|
---|
| 574 | /* timeout! */
|
---|
| 575 | ev->ms = 0;
|
---|
| 576 | /* fprintf(stderr, "call curl_multi_socket_action(TIMEOUT)\n"); */
|
---|
| 577 | mcode = curl_multi_socket_action(multi, CURL_SOCKET_TIMEOUT, 0,
|
---|
| 578 | &ev->running_handles);
|
---|
| 579 | }
|
---|
| 580 | else if(pollrc > 0) {
|
---|
| 581 | /* loop over the monitored sockets to see which ones had activity */
|
---|
| 582 | for(i = 0; i< numfds; i++) {
|
---|
| 583 | if(fds[i].revents) {
|
---|
| 584 | /* socket activity, tell libcurl */
|
---|
| 585 | int act = poll2cselect(fds[i].revents); /* convert */
|
---|
| 586 | infof(multi->easyp, "call curl_multi_socket_action(socket %d)\n",
|
---|
| 587 | fds[i].fd);
|
---|
| 588 | mcode = curl_multi_socket_action(multi, fds[i].fd, act,
|
---|
| 589 | &ev->running_handles);
|
---|
| 590 | }
|
---|
| 591 | }
|
---|
| 592 |
|
---|
| 593 | if(!ev->msbump) {
|
---|
| 594 | /* If nothing updated the timeout, we decrease it by the spent time.
|
---|
| 595 | * If it was updated, it has the new timeout time stored already.
|
---|
| 596 | */
|
---|
| 597 | timediff_t timediff = Curl_timediff(after, before);
|
---|
| 598 | if(timediff > 0) {
|
---|
| 599 | if(timediff > ev->ms)
|
---|
| 600 | ev->ms = 0;
|
---|
| 601 | else
|
---|
| 602 | ev->ms -= (long)timediff;
|
---|
| 603 | }
|
---|
| 604 | }
|
---|
| 605 | }
|
---|
| 606 | else
|
---|
| 607 | return CURLE_RECV_ERROR;
|
---|
| 608 |
|
---|
| 609 | if(mcode)
|
---|
| 610 | return CURLE_URL_MALFORMAT; /* TODO: return a proper error! */
|
---|
| 611 |
|
---|
| 612 | /* we don't really care about the "msgs_in_queue" value returned in the
|
---|
| 613 | second argument */
|
---|
| 614 | msg = curl_multi_info_read(multi, &pollrc);
|
---|
| 615 | if(msg) {
|
---|
| 616 | result = msg->data.result;
|
---|
| 617 | done = TRUE;
|
---|
| 618 | }
|
---|
| 619 | }
|
---|
| 620 |
|
---|
| 621 | return result;
|
---|
| 622 | }
|
---|
| 623 |
|
---|
| 624 |
|
---|
| 625 | /* easy_events()
|
---|
| 626 | *
|
---|
| 627 | * Runs a transfer in a blocking manner using the events-based API
|
---|
| 628 | */
|
---|
| 629 | static CURLcode easy_events(struct Curl_multi *multi)
|
---|
| 630 | {
|
---|
| 631 | /* this struct is made static to allow it to be used after this function
|
---|
| 632 | returns and curl_multi_remove_handle() is called */
|
---|
| 633 | static struct events evs = {2, FALSE, 0, NULL, 0};
|
---|
| 634 |
|
---|
| 635 | /* if running event-based, do some further multi inits */
|
---|
| 636 | events_setup(multi, &evs);
|
---|
| 637 |
|
---|
| 638 | return wait_or_timeout(multi, &evs);
|
---|
| 639 | }
|
---|
| 640 | #else /* CURLDEBUG */
|
---|
| 641 | /* when not built with debug, this function doesn't exist */
|
---|
| 642 | #define easy_events(x) CURLE_NOT_BUILT_IN
|
---|
| 643 | #endif
|
---|
| 644 |
|
---|
| 645 | static CURLcode easy_transfer(struct Curl_multi *multi)
|
---|
| 646 | {
|
---|
| 647 | bool done = FALSE;
|
---|
| 648 | CURLMcode mcode = CURLM_OK;
|
---|
| 649 | CURLcode result = CURLE_OK;
|
---|
| 650 | struct curltime before;
|
---|
| 651 | int without_fds = 0; /* count number of consecutive returns from
|
---|
| 652 | curl_multi_wait() without any filedescriptors */
|
---|
| 653 |
|
---|
| 654 | while(!done && !mcode) {
|
---|
| 655 | int still_running = 0;
|
---|
| 656 | int rc;
|
---|
| 657 |
|
---|
| 658 | before = Curl_now();
|
---|
| 659 | mcode = curl_multi_wait(multi, NULL, 0, 1000, &rc);
|
---|
| 660 |
|
---|
| 661 | if(!mcode) {
|
---|
| 662 | if(!rc) {
|
---|
| 663 | struct curltime after = Curl_now();
|
---|
| 664 |
|
---|
| 665 | /* If it returns without any filedescriptor instantly, we need to
|
---|
| 666 | avoid busy-looping during periods where it has nothing particular
|
---|
| 667 | to wait for */
|
---|
| 668 | if(Curl_timediff(after, before) <= 10) {
|
---|
| 669 | without_fds++;
|
---|
| 670 | if(without_fds > 2) {
|
---|
| 671 | int sleep_ms = without_fds < 10 ? (1 << (without_fds - 1)) : 1000;
|
---|
| 672 | Curl_wait_ms(sleep_ms);
|
---|
| 673 | }
|
---|
| 674 | }
|
---|
| 675 | else
|
---|
| 676 | /* it wasn't "instant", restart counter */
|
---|
| 677 | without_fds = 0;
|
---|
| 678 | }
|
---|
| 679 | else
|
---|
| 680 | /* got file descriptor, restart counter */
|
---|
| 681 | without_fds = 0;
|
---|
| 682 |
|
---|
| 683 | mcode = curl_multi_perform(multi, &still_running);
|
---|
| 684 | }
|
---|
| 685 |
|
---|
| 686 | /* only read 'still_running' if curl_multi_perform() return OK */
|
---|
| 687 | if(!mcode && !still_running) {
|
---|
| 688 | CURLMsg *msg = curl_multi_info_read(multi, &rc);
|
---|
| 689 | if(msg) {
|
---|
| 690 | result = msg->data.result;
|
---|
| 691 | done = TRUE;
|
---|
| 692 | }
|
---|
| 693 | }
|
---|
| 694 | }
|
---|
| 695 |
|
---|
| 696 | /* Make sure to return some kind of error if there was a multi problem */
|
---|
| 697 | if(mcode) {
|
---|
| 698 | result = (mcode == CURLM_OUT_OF_MEMORY) ? CURLE_OUT_OF_MEMORY :
|
---|
| 699 | /* The other multi errors should never happen, so return
|
---|
| 700 | something suitably generic */
|
---|
| 701 | CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
| 702 | }
|
---|
| 703 |
|
---|
| 704 | return result;
|
---|
| 705 | }
|
---|
| 706 |
|
---|
| 707 |
|
---|
| 708 | /*
|
---|
| 709 | * easy_perform() is the external interface that performs a blocking
|
---|
| 710 | * transfer as previously setup.
|
---|
| 711 | *
|
---|
| 712 | * CONCEPT: This function creates a multi handle, adds the easy handle to it,
|
---|
| 713 | * runs curl_multi_perform() until the transfer is done, then detaches the
|
---|
| 714 | * easy handle, destroys the multi handle and returns the easy handle's return
|
---|
| 715 | * code.
|
---|
| 716 | *
|
---|
| 717 | * REALITY: it can't just create and destroy the multi handle that easily. It
|
---|
| 718 | * needs to keep it around since if this easy handle is used again by this
|
---|
| 719 | * function, the same multi handle must be re-used so that the same pools and
|
---|
| 720 | * caches can be used.
|
---|
| 721 | *
|
---|
| 722 | * DEBUG: if 'events' is set TRUE, this function will use a replacement engine
|
---|
| 723 | * instead of curl_multi_perform() and use curl_multi_socket_action().
|
---|
| 724 | */
|
---|
| 725 | static CURLcode easy_perform(struct Curl_easy *data, bool events)
|
---|
| 726 | {
|
---|
| 727 | struct Curl_multi *multi;
|
---|
| 728 | CURLMcode mcode;
|
---|
| 729 | CURLcode result = CURLE_OK;
|
---|
| 730 | SIGPIPE_VARIABLE(pipe_st);
|
---|
| 731 |
|
---|
| 732 | if(!data)
|
---|
| 733 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
| 734 |
|
---|
| 735 | if(data->multi) {
|
---|
| 736 | failf(data, "easy handle already used in multi handle");
|
---|
| 737 | return CURLE_FAILED_INIT;
|
---|
| 738 | }
|
---|
| 739 |
|
---|
| 740 | if(data->multi_easy)
|
---|
| 741 | multi = data->multi_easy;
|
---|
| 742 | else {
|
---|
| 743 | /* this multi handle will only ever have a single easy handled attached
|
---|
| 744 | to it, so make it use minimal hashes */
|
---|
| 745 | multi = Curl_multi_handle(1, 3);
|
---|
| 746 | if(!multi)
|
---|
| 747 | return CURLE_OUT_OF_MEMORY;
|
---|
| 748 | data->multi_easy = multi;
|
---|
| 749 | }
|
---|
| 750 |
|
---|
| 751 | /* Copy the MAXCONNECTS option to the multi handle */
|
---|
| 752 | curl_multi_setopt(multi, CURLMOPT_MAXCONNECTS, data->set.maxconnects);
|
---|
| 753 |
|
---|
| 754 | mcode = curl_multi_add_handle(multi, data);
|
---|
| 755 | if(mcode) {
|
---|
| 756 | curl_multi_cleanup(multi);
|
---|
| 757 | if(mcode == CURLM_OUT_OF_MEMORY)
|
---|
| 758 | return CURLE_OUT_OF_MEMORY;
|
---|
| 759 | return CURLE_FAILED_INIT;
|
---|
| 760 | }
|
---|
| 761 |
|
---|
| 762 | sigpipe_ignore(data, &pipe_st);
|
---|
| 763 |
|
---|
| 764 | /* assign this after curl_multi_add_handle() since that function checks for
|
---|
| 765 | it and rejects this handle otherwise */
|
---|
| 766 | data->multi = multi;
|
---|
| 767 |
|
---|
| 768 | /* run the transfer */
|
---|
| 769 | result = events ? easy_events(multi) : easy_transfer(multi);
|
---|
| 770 |
|
---|
| 771 | /* ignoring the return code isn't nice, but atm we can't really handle
|
---|
| 772 | a failure here, room for future improvement! */
|
---|
| 773 | (void)curl_multi_remove_handle(multi, data);
|
---|
| 774 |
|
---|
| 775 | sigpipe_restore(&pipe_st);
|
---|
| 776 |
|
---|
| 777 | /* The multi handle is kept alive, owned by the easy handle */
|
---|
| 778 | return result;
|
---|
| 779 | }
|
---|
| 780 |
|
---|
| 781 |
|
---|
| 782 | /*
|
---|
| 783 | * curl_easy_perform() is the external interface that performs a blocking
|
---|
| 784 | * transfer as previously setup.
|
---|
| 785 | */
|
---|
| 786 | CURLcode curl_easy_perform(struct Curl_easy *data)
|
---|
| 787 | {
|
---|
| 788 | return easy_perform(data, FALSE);
|
---|
| 789 | }
|
---|
| 790 |
|
---|
| 791 | #ifdef CURLDEBUG
|
---|
| 792 | /*
|
---|
| 793 | * curl_easy_perform_ev() is the external interface that performs a blocking
|
---|
| 794 | * transfer using the event-based API internally.
|
---|
| 795 | */
|
---|
| 796 | CURLcode curl_easy_perform_ev(struct Curl_easy *data)
|
---|
| 797 | {
|
---|
| 798 | return easy_perform(data, TRUE);
|
---|
| 799 | }
|
---|
| 800 |
|
---|
| 801 | #endif
|
---|
| 802 |
|
---|
| 803 | /*
|
---|
| 804 | * curl_easy_cleanup() is the external interface to cleaning/freeing the given
|
---|
| 805 | * easy handle.
|
---|
| 806 | */
|
---|
| 807 | void curl_easy_cleanup(struct Curl_easy *data)
|
---|
| 808 | {
|
---|
| 809 | SIGPIPE_VARIABLE(pipe_st);
|
---|
| 810 |
|
---|
| 811 | if(!data)
|
---|
| 812 | return;
|
---|
| 813 |
|
---|
| 814 | sigpipe_ignore(data, &pipe_st);
|
---|
| 815 | Curl_close(data);
|
---|
| 816 | sigpipe_restore(&pipe_st);
|
---|
| 817 | }
|
---|
| 818 |
|
---|
| 819 | /*
|
---|
| 820 | * curl_easy_getinfo() is an external interface that allows an app to retrieve
|
---|
| 821 | * information from a performed transfer and similar.
|
---|
| 822 | */
|
---|
| 823 | #undef curl_easy_getinfo
|
---|
| 824 | CURLcode curl_easy_getinfo(struct Curl_easy *data, CURLINFO info, ...)
|
---|
| 825 | {
|
---|
| 826 | va_list arg;
|
---|
| 827 | void *paramp;
|
---|
| 828 | CURLcode result;
|
---|
| 829 |
|
---|
| 830 | va_start(arg, info);
|
---|
| 831 | paramp = va_arg(arg, void *);
|
---|
| 832 |
|
---|
| 833 | result = Curl_getinfo(data, info, paramp);
|
---|
| 834 |
|
---|
| 835 | va_end(arg);
|
---|
| 836 | return result;
|
---|
| 837 | }
|
---|
| 838 |
|
---|
| 839 | static CURLcode dupset(struct Curl_easy *dst, struct Curl_easy *src)
|
---|
| 840 | {
|
---|
| 841 | CURLcode result = CURLE_OK;
|
---|
| 842 | enum dupstring i;
|
---|
| 843 |
|
---|
| 844 | /* Copy src->set into dst->set first, then deal with the strings
|
---|
| 845 | afterwards */
|
---|
| 846 | dst->set = src->set;
|
---|
| 847 |
|
---|
| 848 | /* clear all string pointers first */
|
---|
| 849 | memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
|
---|
| 850 |
|
---|
| 851 | /* duplicate all strings */
|
---|
| 852 | for(i = (enum dupstring)0; i< STRING_LASTZEROTERMINATED; i++) {
|
---|
| 853 | result = Curl_setstropt(&dst->set.str[i], src->set.str[i]);
|
---|
| 854 | if(result)
|
---|
| 855 | return result;
|
---|
| 856 | }
|
---|
| 857 |
|
---|
| 858 | /* duplicate memory areas pointed to */
|
---|
| 859 | i = STRING_COPYPOSTFIELDS;
|
---|
| 860 | if(src->set.postfieldsize && src->set.str[i]) {
|
---|
| 861 | /* postfieldsize is curl_off_t, Curl_memdup() takes a size_t ... */
|
---|
| 862 | dst->set.str[i] = Curl_memdup(src->set.str[i],
|
---|
| 863 | curlx_sotouz(src->set.postfieldsize));
|
---|
| 864 | if(!dst->set.str[i])
|
---|
| 865 | return CURLE_OUT_OF_MEMORY;
|
---|
| 866 | /* point to the new copy */
|
---|
| 867 | dst->set.postfields = dst->set.str[i];
|
---|
| 868 | }
|
---|
| 869 |
|
---|
| 870 | return CURLE_OK;
|
---|
| 871 | }
|
---|
| 872 |
|
---|
| 873 | /*
|
---|
| 874 | * curl_easy_duphandle() is an external interface to allow duplication of a
|
---|
| 875 | * given input easy handle. The returned handle will be a new working handle
|
---|
| 876 | * with all options set exactly as the input source handle.
|
---|
| 877 | */
|
---|
| 878 | struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
|
---|
| 879 | {
|
---|
| 880 | struct Curl_easy *outcurl = calloc(1, sizeof(struct Curl_easy));
|
---|
| 881 | if(NULL == outcurl)
|
---|
| 882 | goto fail;
|
---|
| 883 |
|
---|
| 884 | /*
|
---|
| 885 | * We setup a few buffers we need. We should probably make them
|
---|
| 886 | * get setup on-demand in the code, as that would probably decrease
|
---|
| 887 | * the likeliness of us forgetting to init a buffer here in the future.
|
---|
| 888 | */
|
---|
| 889 | outcurl->set.buffer_size = data->set.buffer_size;
|
---|
| 890 | outcurl->state.buffer = malloc(outcurl->set.buffer_size + 1);
|
---|
| 891 | if(!outcurl->state.buffer)
|
---|
| 892 | goto fail;
|
---|
| 893 |
|
---|
| 894 | outcurl->state.headerbuff = malloc(HEADERSIZE);
|
---|
| 895 | if(!outcurl->state.headerbuff)
|
---|
| 896 | goto fail;
|
---|
| 897 | outcurl->state.headersize = HEADERSIZE;
|
---|
| 898 |
|
---|
| 899 | /* copy all userdefined values */
|
---|
| 900 | if(dupset(outcurl, data))
|
---|
| 901 | goto fail;
|
---|
| 902 |
|
---|
| 903 | /* the connection cache is setup on demand */
|
---|
| 904 | outcurl->state.conn_cache = NULL;
|
---|
| 905 |
|
---|
| 906 | outcurl->state.lastconnect = NULL;
|
---|
| 907 |
|
---|
| 908 | outcurl->progress.flags = data->progress.flags;
|
---|
| 909 | outcurl->progress.callback = data->progress.callback;
|
---|
| 910 |
|
---|
| 911 | if(data->cookies) {
|
---|
| 912 | /* If cookies are enabled in the parent handle, we enable them
|
---|
| 913 | in the clone as well! */
|
---|
| 914 | outcurl->cookies = Curl_cookie_init(data,
|
---|
| 915 | data->cookies->filename,
|
---|
| 916 | outcurl->cookies,
|
---|
| 917 | data->set.cookiesession);
|
---|
| 918 | if(!outcurl->cookies)
|
---|
| 919 | goto fail;
|
---|
| 920 | }
|
---|
| 921 |
|
---|
| 922 | /* duplicate all values in 'change' */
|
---|
| 923 | if(data->change.cookielist) {
|
---|
| 924 | outcurl->change.cookielist =
|
---|
| 925 | Curl_slist_duplicate(data->change.cookielist);
|
---|
| 926 | if(!outcurl->change.cookielist)
|
---|
| 927 | goto fail;
|
---|
| 928 | }
|
---|
| 929 |
|
---|
| 930 | if(data->change.url) {
|
---|
| 931 | outcurl->change.url = strdup(data->change.url);
|
---|
| 932 | if(!outcurl->change.url)
|
---|
| 933 | goto fail;
|
---|
| 934 | outcurl->change.url_alloc = TRUE;
|
---|
| 935 | }
|
---|
| 936 |
|
---|
| 937 | if(data->change.referer) {
|
---|
| 938 | outcurl->change.referer = strdup(data->change.referer);
|
---|
| 939 | if(!outcurl->change.referer)
|
---|
| 940 | goto fail;
|
---|
| 941 | outcurl->change.referer_alloc = TRUE;
|
---|
| 942 | }
|
---|
| 943 |
|
---|
| 944 | /* Clone the resolver handle, if present, for the new handle */
|
---|
| 945 | if(Curl_resolver_duphandle(&outcurl->state.resolver,
|
---|
| 946 | data->state.resolver))
|
---|
| 947 | goto fail;
|
---|
| 948 |
|
---|
| 949 | Curl_convert_setup(outcurl);
|
---|
| 950 |
|
---|
| 951 | Curl_initinfo(outcurl);
|
---|
| 952 |
|
---|
| 953 | outcurl->magic = CURLEASY_MAGIC_NUMBER;
|
---|
| 954 |
|
---|
| 955 | /* we reach this point and thus we are OK */
|
---|
| 956 |
|
---|
| 957 | return outcurl;
|
---|
| 958 |
|
---|
| 959 | fail:
|
---|
| 960 |
|
---|
| 961 | if(outcurl) {
|
---|
| 962 | curl_slist_free_all(outcurl->change.cookielist);
|
---|
| 963 | outcurl->change.cookielist = NULL;
|
---|
| 964 | Curl_safefree(outcurl->state.buffer);
|
---|
| 965 | Curl_safefree(outcurl->state.headerbuff);
|
---|
| 966 | Curl_safefree(outcurl->change.url);
|
---|
| 967 | Curl_safefree(outcurl->change.referer);
|
---|
| 968 | Curl_freeset(outcurl);
|
---|
| 969 | free(outcurl);
|
---|
| 970 | }
|
---|
| 971 |
|
---|
| 972 | return NULL;
|
---|
| 973 | }
|
---|
| 974 |
|
---|
| 975 | /*
|
---|
| 976 | * curl_easy_reset() is an external interface that allows an app to re-
|
---|
| 977 | * initialize a session handle to the default values.
|
---|
| 978 | */
|
---|
| 979 | void curl_easy_reset(struct Curl_easy *data)
|
---|
| 980 | {
|
---|
| 981 | Curl_safefree(data->state.pathbuffer);
|
---|
| 982 |
|
---|
| 983 | data->state.path = NULL;
|
---|
| 984 |
|
---|
| 985 | Curl_free_request_state(data);
|
---|
| 986 |
|
---|
| 987 | /* zero out UserDefined data: */
|
---|
| 988 | Curl_freeset(data);
|
---|
| 989 | memset(&data->set, 0, sizeof(struct UserDefined));
|
---|
| 990 | (void)Curl_init_userdefined(&data->set);
|
---|
| 991 |
|
---|
| 992 | /* zero out Progress data: */
|
---|
| 993 | memset(&data->progress, 0, sizeof(struct Progress));
|
---|
| 994 |
|
---|
| 995 | /* zero out PureInfo data: */
|
---|
| 996 | Curl_initinfo(data);
|
---|
| 997 |
|
---|
| 998 | data->progress.flags |= PGRS_HIDE;
|
---|
| 999 | data->state.current_speed = -1; /* init to negative == impossible */
|
---|
| 1000 |
|
---|
| 1001 | /* zero out authentication data: */
|
---|
| 1002 | memset(&data->state.authhost, 0, sizeof(struct auth));
|
---|
| 1003 | memset(&data->state.authproxy, 0, sizeof(struct auth));
|
---|
| 1004 | }
|
---|
| 1005 |
|
---|
| 1006 | /*
|
---|
| 1007 | * curl_easy_pause() allows an application to pause or unpause a specific
|
---|
| 1008 | * transfer and direction. This function sets the full new state for the
|
---|
| 1009 | * current connection this easy handle operates on.
|
---|
| 1010 | *
|
---|
| 1011 | * NOTE: if you have the receiving paused and you call this function to remove
|
---|
| 1012 | * the pausing, you may get your write callback called at this point.
|
---|
| 1013 | *
|
---|
| 1014 | * Action is a bitmask consisting of CURLPAUSE_* bits in curl/curl.h
|
---|
| 1015 | */
|
---|
| 1016 | CURLcode curl_easy_pause(struct Curl_easy *data, int action)
|
---|
| 1017 | {
|
---|
| 1018 | struct SingleRequest *k = &data->req;
|
---|
| 1019 | CURLcode result = CURLE_OK;
|
---|
| 1020 |
|
---|
| 1021 | /* first switch off both pause bits */
|
---|
| 1022 | int newstate = k->keepon &~ (KEEP_RECV_PAUSE| KEEP_SEND_PAUSE);
|
---|
| 1023 |
|
---|
| 1024 | /* set the new desired pause bits */
|
---|
| 1025 | newstate |= ((action & CURLPAUSE_RECV)?KEEP_RECV_PAUSE:0) |
|
---|
| 1026 | ((action & CURLPAUSE_SEND)?KEEP_SEND_PAUSE:0);
|
---|
| 1027 |
|
---|
| 1028 | /* put it back in the keepon */
|
---|
| 1029 | k->keepon = newstate;
|
---|
| 1030 |
|
---|
| 1031 | if(!(newstate & KEEP_RECV_PAUSE) && data->state.tempcount) {
|
---|
| 1032 | /* there are buffers for sending that can be delivered as the receive
|
---|
| 1033 | pausing is lifted! */
|
---|
| 1034 | unsigned int i;
|
---|
| 1035 | unsigned int count = data->state.tempcount;
|
---|
| 1036 | struct tempbuf writebuf[3]; /* there can only be three */
|
---|
| 1037 |
|
---|
| 1038 | /* copy the structs to allow for immediate re-pausing */
|
---|
| 1039 | for(i = 0; i < data->state.tempcount; i++) {
|
---|
| 1040 | writebuf[i] = data->state.tempwrite[i];
|
---|
| 1041 | data->state.tempwrite[i].buf = NULL;
|
---|
| 1042 | }
|
---|
| 1043 | data->state.tempcount = 0;
|
---|
| 1044 |
|
---|
| 1045 | for(i = 0; i < count; i++) {
|
---|
| 1046 | /* even if one function returns error, this loops through and frees all
|
---|
| 1047 | buffers */
|
---|
| 1048 | if(!result)
|
---|
| 1049 | result = Curl_client_chop_write(data->easy_conn,
|
---|
| 1050 | writebuf[i].type,
|
---|
| 1051 | writebuf[i].buf,
|
---|
| 1052 | writebuf[i].len);
|
---|
| 1053 | free(writebuf[i].buf);
|
---|
| 1054 | }
|
---|
| 1055 | if(result)
|
---|
| 1056 | return result;
|
---|
| 1057 | }
|
---|
| 1058 |
|
---|
| 1059 | /* if there's no error and we're not pausing both directions, we want
|
---|
| 1060 | to have this handle checked soon */
|
---|
| 1061 | if(!result &&
|
---|
| 1062 | ((newstate&(KEEP_RECV_PAUSE|KEEP_SEND_PAUSE)) !=
|
---|
| 1063 | (KEEP_RECV_PAUSE|KEEP_SEND_PAUSE)) )
|
---|
| 1064 | Curl_expire(data, 0, EXPIRE_RUN_NOW); /* get this handle going again */
|
---|
| 1065 |
|
---|
| 1066 | return result;
|
---|
| 1067 | }
|
---|
| 1068 |
|
---|
| 1069 |
|
---|
| 1070 | static CURLcode easy_connection(struct Curl_easy *data,
|
---|
| 1071 | curl_socket_t *sfd,
|
---|
| 1072 | struct connectdata **connp)
|
---|
| 1073 | {
|
---|
| 1074 | if(data == NULL)
|
---|
| 1075 | return CURLE_BAD_FUNCTION_ARGUMENT;
|
---|
| 1076 |
|
---|
| 1077 | /* only allow these to be called on handles with CURLOPT_CONNECT_ONLY */
|
---|
| 1078 | if(!data->set.connect_only) {
|
---|
| 1079 | failf(data, "CONNECT_ONLY is required!");
|
---|
| 1080 | return CURLE_UNSUPPORTED_PROTOCOL;
|
---|
| 1081 | }
|
---|
| 1082 |
|
---|
| 1083 | *sfd = Curl_getconnectinfo(data, connp);
|
---|
| 1084 |
|
---|
| 1085 | if(*sfd == CURL_SOCKET_BAD) {
|
---|
| 1086 | failf(data, "Failed to get recent socket");
|
---|
| 1087 | return CURLE_UNSUPPORTED_PROTOCOL;
|
---|
| 1088 | }
|
---|
| 1089 |
|
---|
| 1090 | return CURLE_OK;
|
---|
| 1091 | }
|
---|
| 1092 |
|
---|
| 1093 | /*
|
---|
| 1094 | * Receives data from the connected socket. Use after successful
|
---|
| 1095 | * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
|
---|
| 1096 | * Returns CURLE_OK on success, error code on error.
|
---|
| 1097 | */
|
---|
| 1098 | CURLcode curl_easy_recv(struct Curl_easy *data, void *buffer, size_t buflen,
|
---|
| 1099 | size_t *n)
|
---|
| 1100 | {
|
---|
| 1101 | curl_socket_t sfd;
|
---|
| 1102 | CURLcode result;
|
---|
| 1103 | ssize_t n1;
|
---|
| 1104 | struct connectdata *c;
|
---|
| 1105 |
|
---|
| 1106 | result = easy_connection(data, &sfd, &c);
|
---|
| 1107 | if(result)
|
---|
| 1108 | return result;
|
---|
| 1109 |
|
---|
| 1110 | *n = 0;
|
---|
| 1111 | result = Curl_read(c, sfd, buffer, buflen, &n1);
|
---|
| 1112 |
|
---|
| 1113 | if(result)
|
---|
| 1114 | return result;
|
---|
| 1115 |
|
---|
| 1116 | *n = (size_t)n1;
|
---|
| 1117 |
|
---|
| 1118 | return CURLE_OK;
|
---|
| 1119 | }
|
---|
| 1120 |
|
---|
| 1121 | /*
|
---|
| 1122 | * Sends data over the connected socket. Use after successful
|
---|
| 1123 | * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
|
---|
| 1124 | */
|
---|
| 1125 | CURLcode curl_easy_send(struct Curl_easy *data, const void *buffer,
|
---|
| 1126 | size_t buflen, size_t *n)
|
---|
| 1127 | {
|
---|
| 1128 | curl_socket_t sfd;
|
---|
| 1129 | CURLcode result;
|
---|
| 1130 | ssize_t n1;
|
---|
| 1131 | struct connectdata *c = NULL;
|
---|
| 1132 |
|
---|
| 1133 | result = easy_connection(data, &sfd, &c);
|
---|
| 1134 | if(result)
|
---|
| 1135 | return result;
|
---|
| 1136 |
|
---|
| 1137 | *n = 0;
|
---|
| 1138 | result = Curl_write(c, sfd, buffer, buflen, &n1);
|
---|
| 1139 |
|
---|
| 1140 | if(n1 == -1)
|
---|
| 1141 | return CURLE_SEND_ERROR;
|
---|
| 1142 |
|
---|
| 1143 | /* detect EAGAIN */
|
---|
| 1144 | if(!result && !n1)
|
---|
| 1145 | return CURLE_AGAIN;
|
---|
| 1146 |
|
---|
| 1147 | *n = (size_t)n1;
|
---|
| 1148 |
|
---|
| 1149 | return result;
|
---|
| 1150 | }
|
---|