[164] | 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 - 2015, 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 | * RFC2195 CRAM-MD5 authentication
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| 22 | * RFC2595 Using TLS with IMAP, POP3 and ACAP
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| 23 | * RFC2831 DIGEST-MD5 authentication
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| 24 | * RFC3501 IMAPv4 protocol
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| 25 | * RFC4422 Simple Authentication and Security Layer (SASL)
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| 26 | * RFC4616 PLAIN authentication
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| 27 | * RFC4752 The Kerberos V5 ("GSSAPI") SASL Mechanism
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| 28 | * RFC4959 IMAP Extension for SASL Initial Client Response
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| 29 | * RFC5092 IMAP URL Scheme
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| 30 | * RFC6749 OAuth 2.0 Authorization Framework
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| 31 | * Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
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| 32 | *
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| 33 | ***************************************************************************/
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| 34 |
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| 35 | #include "curl_setup.h"
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| 36 |
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| 37 | #ifndef CURL_DISABLE_IMAP
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| 38 |
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| 39 | #ifdef HAVE_NETINET_IN_H
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| 40 | #include <netinet/in.h>
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| 41 | #endif
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| 42 | #ifdef HAVE_ARPA_INET_H
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| 43 | #include <arpa/inet.h>
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| 44 | #endif
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| 45 | #ifdef HAVE_UTSNAME_H
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| 46 | #include <sys/utsname.h>
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| 47 | #endif
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| 48 | #ifdef HAVE_NETDB_H
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| 49 | #include <netdb.h>
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| 50 | #endif
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| 51 | #ifdef __VMS
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| 52 | #include <in.h>
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| 53 | #include <inet.h>
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| 54 | #endif
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| 55 |
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| 56 | #if (defined(NETWARE) && defined(__NOVELL_LIBC__))
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| 57 | #undef in_addr_t
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| 58 | #define in_addr_t unsigned long
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| 59 | #endif
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| 60 |
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| 61 | #include <curl/curl.h>
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| 62 | #include "urldata.h"
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| 63 | #include "sendf.h"
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| 64 | #include "hostip.h"
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| 65 | #include "progress.h"
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| 66 | #include "transfer.h"
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| 67 | #include "escape.h"
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| 68 | #include "http.h" /* for HTTP proxy tunnel stuff */
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| 69 | #include "socks.h"
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| 70 | #include "imap.h"
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| 71 |
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| 72 | #include "strtoofft.h"
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| 73 | #include "strequal.h"
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| 74 | #include "vtls/vtls.h"
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| 75 | #include "connect.h"
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| 76 | #include "strerror.h"
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| 77 | #include "select.h"
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| 78 | #include "multiif.h"
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| 79 | #include "url.h"
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| 80 | #include "rawstr.h"
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| 81 | #include "curl_sasl.h"
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| 82 | #include "warnless.h"
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| 83 | #include "curl_printf.h"
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| 84 |
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| 85 | #include "curl_memory.h"
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| 86 | /* The last #include file should be: */
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| 87 | #include "memdebug.h"
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| 88 |
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| 89 | /* Local API functions */
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| 90 | static CURLcode imap_regular_transfer(struct connectdata *conn, bool *done);
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| 91 | static CURLcode imap_do(struct connectdata *conn, bool *done);
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| 92 | static CURLcode imap_done(struct connectdata *conn, CURLcode status,
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| 93 | bool premature);
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| 94 | static CURLcode imap_connect(struct connectdata *conn, bool *done);
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| 95 | static CURLcode imap_disconnect(struct connectdata *conn, bool dead);
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| 96 | static CURLcode imap_multi_statemach(struct connectdata *conn, bool *done);
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| 97 | static int imap_getsock(struct connectdata *conn, curl_socket_t *socks,
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| 98 | int numsocks);
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| 99 | static CURLcode imap_doing(struct connectdata *conn, bool *dophase_done);
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| 100 | static CURLcode imap_setup_connection(struct connectdata *conn);
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| 101 | static char *imap_atom(const char *str, bool escape_only);
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| 102 | static CURLcode imap_sendf(struct connectdata *conn, const char *fmt, ...);
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| 103 | static CURLcode imap_parse_url_options(struct connectdata *conn);
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| 104 | static CURLcode imap_parse_url_path(struct connectdata *conn);
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| 105 | static CURLcode imap_parse_custom_request(struct connectdata *conn);
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| 106 | static CURLcode imap_perform_authenticate(struct connectdata *conn,
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| 107 | const char *mech,
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| 108 | const char *initresp);
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| 109 | static CURLcode imap_continue_authenticate(struct connectdata *conn,
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| 110 | const char *resp);
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| 111 | static void imap_get_message(char *buffer, char** outptr);
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| 112 |
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| 113 | /*
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| 114 | * IMAP protocol handler.
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| 115 | */
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| 116 |
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| 117 | const struct Curl_handler Curl_handler_imap = {
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| 118 | "IMAP", /* scheme */
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| 119 | imap_setup_connection, /* setup_connection */
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| 120 | imap_do, /* do_it */
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| 121 | imap_done, /* done */
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| 122 | ZERO_NULL, /* do_more */
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| 123 | imap_connect, /* connect_it */
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| 124 | imap_multi_statemach, /* connecting */
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| 125 | imap_doing, /* doing */
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| 126 | imap_getsock, /* proto_getsock */
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| 127 | imap_getsock, /* doing_getsock */
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| 128 | ZERO_NULL, /* domore_getsock */
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| 129 | ZERO_NULL, /* perform_getsock */
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| 130 | imap_disconnect, /* disconnect */
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| 131 | ZERO_NULL, /* readwrite */
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| 132 | PORT_IMAP, /* defport */
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| 133 | CURLPROTO_IMAP, /* protocol */
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| 134 | PROTOPT_CLOSEACTION /* flags */
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| 135 | };
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| 136 |
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| 137 | #ifdef USE_SSL
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| 138 | /*
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| 139 | * IMAPS protocol handler.
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| 140 | */
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| 141 |
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| 142 | const struct Curl_handler Curl_handler_imaps = {
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| 143 | "IMAPS", /* scheme */
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| 144 | imap_setup_connection, /* setup_connection */
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| 145 | imap_do, /* do_it */
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| 146 | imap_done, /* done */
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| 147 | ZERO_NULL, /* do_more */
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| 148 | imap_connect, /* connect_it */
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| 149 | imap_multi_statemach, /* connecting */
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| 150 | imap_doing, /* doing */
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| 151 | imap_getsock, /* proto_getsock */
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| 152 | imap_getsock, /* doing_getsock */
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| 153 | ZERO_NULL, /* domore_getsock */
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| 154 | ZERO_NULL, /* perform_getsock */
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| 155 | imap_disconnect, /* disconnect */
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| 156 | ZERO_NULL, /* readwrite */
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| 157 | PORT_IMAPS, /* defport */
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| 158 | CURLPROTO_IMAPS, /* protocol */
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| 159 | PROTOPT_CLOSEACTION | PROTOPT_SSL /* flags */
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| 160 | };
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| 161 | #endif
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| 162 |
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| 163 | #ifndef CURL_DISABLE_HTTP
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| 164 | /*
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| 165 | * HTTP-proxyed IMAP protocol handler.
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| 166 | */
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| 167 |
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| 168 | static const struct Curl_handler Curl_handler_imap_proxy = {
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| 169 | "IMAP", /* scheme */
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| 170 | Curl_http_setup_conn, /* setup_connection */
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| 171 | Curl_http, /* do_it */
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| 172 | Curl_http_done, /* done */
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| 173 | ZERO_NULL, /* do_more */
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| 174 | ZERO_NULL, /* connect_it */
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| 175 | ZERO_NULL, /* connecting */
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| 176 | ZERO_NULL, /* doing */
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| 177 | ZERO_NULL, /* proto_getsock */
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| 178 | ZERO_NULL, /* doing_getsock */
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| 179 | ZERO_NULL, /* domore_getsock */
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| 180 | ZERO_NULL, /* perform_getsock */
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| 181 | ZERO_NULL, /* disconnect */
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| 182 | ZERO_NULL, /* readwrite */
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| 183 | PORT_IMAP, /* defport */
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| 184 | CURLPROTO_HTTP, /* protocol */
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| 185 | PROTOPT_NONE /* flags */
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| 186 | };
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| 187 |
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| 188 | #ifdef USE_SSL
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| 189 | /*
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| 190 | * HTTP-proxyed IMAPS protocol handler.
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| 191 | */
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| 192 |
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| 193 | static const struct Curl_handler Curl_handler_imaps_proxy = {
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| 194 | "IMAPS", /* scheme */
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| 195 | Curl_http_setup_conn, /* setup_connection */
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| 196 | Curl_http, /* do_it */
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| 197 | Curl_http_done, /* done */
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| 198 | ZERO_NULL, /* do_more */
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| 199 | ZERO_NULL, /* connect_it */
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| 200 | ZERO_NULL, /* connecting */
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| 201 | ZERO_NULL, /* doing */
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| 202 | ZERO_NULL, /* proto_getsock */
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| 203 | ZERO_NULL, /* doing_getsock */
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| 204 | ZERO_NULL, /* domore_getsock */
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| 205 | ZERO_NULL, /* perform_getsock */
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| 206 | ZERO_NULL, /* disconnect */
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| 207 | ZERO_NULL, /* readwrite */
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| 208 | PORT_IMAPS, /* defport */
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| 209 | CURLPROTO_HTTP, /* protocol */
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| 210 | PROTOPT_NONE /* flags */
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| 211 | };
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| 212 | #endif
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| 213 | #endif
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| 214 |
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| 215 | /* SASL parameters for the imap protocol */
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| 216 | static const struct SASLproto saslimap = {
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| 217 | "imap", /* The service name */
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| 218 | '+', /* Code received when continuation is expected */
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| 219 | 'O', /* Code to receive upon authentication success */
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| 220 | 0, /* Maximum initial response length (no max) */
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| 221 | imap_perform_authenticate, /* Send authentication command */
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| 222 | imap_continue_authenticate, /* Send authentication continuation */
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| 223 | imap_get_message /* Get SASL response message */
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| 224 | };
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| 225 |
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| 226 |
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| 227 | #ifdef USE_SSL
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| 228 | static void imap_to_imaps(struct connectdata *conn)
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| 229 | {
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| 230 | conn->handler = &Curl_handler_imaps;
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| 231 | }
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| 232 | #else
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| 233 | #define imap_to_imaps(x) Curl_nop_stmt
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| 234 | #endif
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| 235 |
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| 236 | /***********************************************************************
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| 237 | *
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| 238 | * imap_matchresp()
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| 239 | *
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| 240 | * Determines whether the untagged response is related to the specified
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| 241 | * command by checking if it is in format "* <command-name> ..." or
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| 242 | * "* <number> <command-name> ...".
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| 243 | *
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| 244 | * The "* " marker is assumed to have already been checked by the caller.
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| 245 | */
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| 246 | static bool imap_matchresp(const char *line, size_t len, const char *cmd)
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| 247 | {
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| 248 | const char *end = line + len;
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| 249 | size_t cmd_len = strlen(cmd);
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| 250 |
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| 251 | /* Skip the untagged response marker */
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| 252 | line += 2;
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| 253 |
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| 254 | /* Do we have a number after the marker? */
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| 255 | if(line < end && ISDIGIT(*line)) {
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| 256 | /* Skip the number */
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| 257 | do
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| 258 | line++;
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| 259 | while(line < end && ISDIGIT(*line));
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| 260 |
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| 261 | /* Do we have the space character? */
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| 262 | if(line == end || *line != ' ')
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| 263 | return FALSE;
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| 264 |
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| 265 | line++;
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| 266 | }
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| 267 |
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| 268 | /* Does the command name match and is it followed by a space character or at
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| 269 | the end of line? */
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| 270 | if(line + cmd_len <= end && Curl_raw_nequal(line, cmd, cmd_len) &&
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| 271 | (line[cmd_len] == ' ' || line + cmd_len + 2 == end))
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| 272 | return TRUE;
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| 273 |
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| 274 | return FALSE;
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| 275 | }
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| 276 |
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| 277 | /***********************************************************************
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| 278 | *
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| 279 | * imap_endofresp()
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| 280 | *
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| 281 | * Checks whether the given string is a valid tagged, untagged or continuation
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| 282 | * response which can be processed by the response handler.
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| 283 | */
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| 284 | static bool imap_endofresp(struct connectdata *conn, char *line, size_t len,
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| 285 | int *resp)
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| 286 | {
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| 287 | struct IMAP *imap = conn->data->req.protop;
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| 288 | struct imap_conn *imapc = &conn->proto.imapc;
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| 289 | const char *id = imapc->resptag;
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| 290 | size_t id_len = strlen(id);
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| 291 |
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| 292 | /* Do we have a tagged command response? */
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| 293 | if(len >= id_len + 1 && !memcmp(id, line, id_len) && line[id_len] == ' ') {
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| 294 | line += id_len + 1;
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| 295 | len -= id_len + 1;
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| 296 |
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| 297 | if(len >= 2 && !memcmp(line, "OK", 2))
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| 298 | *resp = 'O';
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| 299 | else if(len >= 2 && !memcmp(line, "NO", 2))
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| 300 | *resp = 'N';
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| 301 | else if(len >= 3 && !memcmp(line, "BAD", 3))
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| 302 | *resp = 'B';
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| 303 | else {
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| 304 | failf(conn->data, "Bad tagged response");
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| 305 | *resp = -1;
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| 306 | }
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| 307 |
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| 308 | return TRUE;
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| 309 | }
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| 310 |
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| 311 | /* Do we have an untagged command response? */
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| 312 | if(len >= 2 && !memcmp("* ", line, 2)) {
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| 313 | switch(imapc->state) {
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| 314 | /* States which are interested in untagged responses */
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| 315 | case IMAP_CAPABILITY:
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| 316 | if(!imap_matchresp(line, len, "CAPABILITY"))
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| 317 | return FALSE;
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| 318 | break;
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| 319 |
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| 320 | case IMAP_LIST:
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| 321 | if((!imap->custom && !imap_matchresp(line, len, "LIST")) ||
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| 322 | (imap->custom && !imap_matchresp(line, len, imap->custom) &&
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| 323 | (strcmp(imap->custom, "STORE") ||
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| 324 | !imap_matchresp(line, len, "FETCH")) &&
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| 325 | strcmp(imap->custom, "SELECT") &&
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| 326 | strcmp(imap->custom, "EXAMINE") &&
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| 327 | strcmp(imap->custom, "SEARCH") &&
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| 328 | strcmp(imap->custom, "EXPUNGE") &&
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| 329 | strcmp(imap->custom, "LSUB") &&
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| 330 | strcmp(imap->custom, "UID") &&
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| 331 | strcmp(imap->custom, "NOOP")))
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| 332 | return FALSE;
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| 333 | break;
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| 334 |
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| 335 | case IMAP_SELECT:
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| 336 | /* SELECT is special in that its untagged responses do not have a
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| 337 | common prefix so accept anything! */
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| 338 | break;
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| 339 |
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| 340 | case IMAP_FETCH:
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| 341 | if(!imap_matchresp(line, len, "FETCH"))
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| 342 | return FALSE;
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| 343 | break;
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| 344 |
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| 345 | case IMAP_SEARCH:
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| 346 | if(!imap_matchresp(line, len, "SEARCH"))
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| 347 | return FALSE;
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| 348 | break;
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| 349 |
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| 350 | /* Ignore other untagged responses */
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| 351 | default:
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| 352 | return FALSE;
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| 353 | }
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| 354 |
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| 355 | *resp = '*';
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| 356 | return TRUE;
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| 357 | }
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| 358 |
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| 359 | /* Do we have a continuation response? This should be a + symbol followed by
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| 360 | a space and optionally some text as per RFC-3501 for the AUTHENTICATE and
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| 361 | APPEND commands and as outlined in Section 4. Examples of RFC-4959 but
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| 362 | some e-mail servers ignore this and only send a single + instead. */
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| 363 | if(!imap->custom && ((len == 3 && !memcmp("+", line, 1)) ||
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| 364 | (len >= 2 && !memcmp("+ ", line, 2)))) {
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| 365 | switch(imapc->state) {
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| 366 | /* States which are interested in continuation responses */
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| 367 | case IMAP_AUTHENTICATE:
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| 368 | case IMAP_APPEND:
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| 369 | *resp = '+';
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| 370 | break;
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| 371 |
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| 372 | default:
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| 373 | failf(conn->data, "Unexpected continuation response");
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| 374 | *resp = -1;
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| 375 | break;
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| 376 | }
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| 377 |
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| 378 | return TRUE;
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| 379 | }
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| 380 |
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| 381 | return FALSE; /* Nothing for us */
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| 382 | }
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| 383 |
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| 384 | /***********************************************************************
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| 385 | *
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| 386 | * imap_get_message()
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| 387 | *
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| 388 | * Gets the authentication message from the response buffer.
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| 389 | */
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| 390 | static void imap_get_message(char *buffer, char** outptr)
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| 391 | {
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| 392 | size_t len = 0;
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| 393 | char* message = NULL;
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| 394 |
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| 395 | /* Find the start of the message */
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| 396 | for(message = buffer + 2; *message == ' ' || *message == '\t'; message++)
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| 397 | ;
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| 398 |
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| 399 | /* Find the end of the message */
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| 400 | for(len = strlen(message); len--;)
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| 401 | if(message[len] != '\r' && message[len] != '\n' && message[len] != ' ' &&
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| 402 | message[len] != '\t')
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| 403 | break;
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| 404 |
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| 405 | /* Terminate the message */
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| 406 | if(++len) {
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| 407 | message[len] = '\0';
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| 408 | }
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| 409 |
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| 410 | *outptr = message;
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| 411 | }
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| 412 |
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| 413 | /***********************************************************************
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| 414 | *
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| 415 | * state()
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| 416 | *
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| 417 | * This is the ONLY way to change IMAP state!
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| 418 | */
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| 419 | static void state(struct connectdata *conn, imapstate newstate)
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| 420 | {
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| 421 | struct imap_conn *imapc = &conn->proto.imapc;
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| 422 | #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
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| 423 | /* for debug purposes */
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| 424 | static const char * const names[]={
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| 425 | "STOP",
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| 426 | "SERVERGREET",
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| 427 | "CAPABILITY",
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| 428 | "STARTTLS",
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| 429 | "UPGRADETLS",
|
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| 430 | "AUTHENTICATE",
|
---|
| 431 | "LOGIN",
|
---|
| 432 | "LIST",
|
---|
| 433 | "SELECT",
|
---|
| 434 | "FETCH",
|
---|
| 435 | "FETCH_FINAL",
|
---|
| 436 | "APPEND",
|
---|
| 437 | "APPEND_FINAL",
|
---|
| 438 | "SEARCH",
|
---|
| 439 | "LOGOUT",
|
---|
| 440 | /* LAST */
|
---|
| 441 | };
|
---|
| 442 |
|
---|
| 443 | if(imapc->state != newstate)
|
---|
| 444 | infof(conn->data, "IMAP %p state change from %s to %s\n",
|
---|
| 445 | (void *)imapc, names[imapc->state], names[newstate]);
|
---|
| 446 | #endif
|
---|
| 447 |
|
---|
| 448 | imapc->state = newstate;
|
---|
| 449 | }
|
---|
| 450 |
|
---|
| 451 | /***********************************************************************
|
---|
| 452 | *
|
---|
| 453 | * imap_perform_capability()
|
---|
| 454 | *
|
---|
| 455 | * Sends the CAPABILITY command in order to obtain a list of server side
|
---|
| 456 | * supported capabilities.
|
---|
| 457 | */
|
---|
| 458 | static CURLcode imap_perform_capability(struct connectdata *conn)
|
---|
| 459 | {
|
---|
| 460 | CURLcode result = CURLE_OK;
|
---|
| 461 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 462 |
|
---|
| 463 | imapc->sasl.authmechs = SASL_AUTH_NONE; /* No known auth. mechanisms yet */
|
---|
| 464 | imapc->sasl.authused = SASL_AUTH_NONE; /* Clear the auth. mechanism used */
|
---|
| 465 | imapc->tls_supported = FALSE; /* Clear the TLS capability */
|
---|
| 466 |
|
---|
| 467 | /* Send the CAPABILITY command */
|
---|
| 468 | result = imap_sendf(conn, "CAPABILITY");
|
---|
| 469 |
|
---|
| 470 | if(!result)
|
---|
| 471 | state(conn, IMAP_CAPABILITY);
|
---|
| 472 |
|
---|
| 473 | return result;
|
---|
| 474 | }
|
---|
| 475 |
|
---|
| 476 | /***********************************************************************
|
---|
| 477 | *
|
---|
| 478 | * imap_perform_starttls()
|
---|
| 479 | *
|
---|
| 480 | * Sends the STARTTLS command to start the upgrade to TLS.
|
---|
| 481 | */
|
---|
| 482 | static CURLcode imap_perform_starttls(struct connectdata *conn)
|
---|
| 483 | {
|
---|
| 484 | CURLcode result = CURLE_OK;
|
---|
| 485 |
|
---|
| 486 | /* Send the STARTTLS command */
|
---|
| 487 | result = imap_sendf(conn, "STARTTLS");
|
---|
| 488 |
|
---|
| 489 | if(!result)
|
---|
| 490 | state(conn, IMAP_STARTTLS);
|
---|
| 491 |
|
---|
| 492 | return result;
|
---|
| 493 | }
|
---|
| 494 |
|
---|
| 495 | /***********************************************************************
|
---|
| 496 | *
|
---|
| 497 | * imap_perform_upgrade_tls()
|
---|
| 498 | *
|
---|
| 499 | * Performs the upgrade to TLS.
|
---|
| 500 | */
|
---|
| 501 | static CURLcode imap_perform_upgrade_tls(struct connectdata *conn)
|
---|
| 502 | {
|
---|
| 503 | CURLcode result = CURLE_OK;
|
---|
| 504 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 505 |
|
---|
| 506 | /* Start the SSL connection */
|
---|
| 507 | result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &imapc->ssldone);
|
---|
| 508 |
|
---|
| 509 | if(!result) {
|
---|
| 510 | if(imapc->state != IMAP_UPGRADETLS)
|
---|
| 511 | state(conn, IMAP_UPGRADETLS);
|
---|
| 512 |
|
---|
| 513 | if(imapc->ssldone) {
|
---|
| 514 | imap_to_imaps(conn);
|
---|
| 515 | result = imap_perform_capability(conn);
|
---|
| 516 | }
|
---|
| 517 | }
|
---|
| 518 |
|
---|
| 519 | return result;
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | /***********************************************************************
|
---|
| 523 | *
|
---|
| 524 | * imap_perform_login()
|
---|
| 525 | *
|
---|
| 526 | * Sends a clear text LOGIN command to authenticate with.
|
---|
| 527 | */
|
---|
| 528 | static CURLcode imap_perform_login(struct connectdata *conn)
|
---|
| 529 | {
|
---|
| 530 | CURLcode result = CURLE_OK;
|
---|
| 531 | char *user;
|
---|
| 532 | char *passwd;
|
---|
| 533 |
|
---|
| 534 | /* Check we have a username and password to authenticate with and end the
|
---|
| 535 | connect phase if we don't */
|
---|
| 536 | if(!conn->bits.user_passwd) {
|
---|
| 537 | state(conn, IMAP_STOP);
|
---|
| 538 |
|
---|
| 539 | return result;
|
---|
| 540 | }
|
---|
| 541 |
|
---|
| 542 | /* Make sure the username and password are in the correct atom format */
|
---|
| 543 | user = imap_atom(conn->user, false);
|
---|
| 544 | passwd = imap_atom(conn->passwd, false);
|
---|
| 545 |
|
---|
| 546 | /* Send the LOGIN command */
|
---|
| 547 | result = imap_sendf(conn, "LOGIN %s %s", user ? user : "",
|
---|
| 548 | passwd ? passwd : "");
|
---|
| 549 |
|
---|
| 550 | free(user);
|
---|
| 551 | free(passwd);
|
---|
| 552 |
|
---|
| 553 | if(!result)
|
---|
| 554 | state(conn, IMAP_LOGIN);
|
---|
| 555 |
|
---|
| 556 | return result;
|
---|
| 557 | }
|
---|
| 558 |
|
---|
| 559 | /***********************************************************************
|
---|
| 560 | *
|
---|
| 561 | * imap_perform_authenticate()
|
---|
| 562 | *
|
---|
| 563 | * Sends an AUTHENTICATE command allowing the client to login with the given
|
---|
| 564 | * SASL authentication mechanism.
|
---|
| 565 | */
|
---|
| 566 | static CURLcode imap_perform_authenticate(struct connectdata *conn,
|
---|
| 567 | const char *mech,
|
---|
| 568 | const char *initresp)
|
---|
| 569 | {
|
---|
| 570 | CURLcode result = CURLE_OK;
|
---|
| 571 |
|
---|
| 572 | if(initresp) {
|
---|
| 573 | /* Send the AUTHENTICATE command with the initial response */
|
---|
| 574 | result = imap_sendf(conn, "AUTHENTICATE %s %s", mech, initresp);
|
---|
| 575 | }
|
---|
| 576 | else {
|
---|
| 577 | /* Send the AUTHENTICATE command */
|
---|
| 578 | result = imap_sendf(conn, "AUTHENTICATE %s", mech);
|
---|
| 579 | }
|
---|
| 580 |
|
---|
| 581 | return result;
|
---|
| 582 | }
|
---|
| 583 |
|
---|
| 584 | /***********************************************************************
|
---|
| 585 | *
|
---|
| 586 | * imap_continue_authenticate()
|
---|
| 587 | *
|
---|
| 588 | * Sends SASL continuation data or cancellation.
|
---|
| 589 | */
|
---|
| 590 | static CURLcode imap_continue_authenticate(struct connectdata *conn,
|
---|
| 591 | const char *resp)
|
---|
| 592 | {
|
---|
| 593 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 594 |
|
---|
| 595 | return Curl_pp_sendf(&imapc->pp, "%s", resp);
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 | /***********************************************************************
|
---|
| 599 | *
|
---|
| 600 | * imap_perform_authentication()
|
---|
| 601 | *
|
---|
| 602 | * Initiates the authentication sequence, with the appropriate SASL
|
---|
| 603 | * authentication mechanism, falling back to clear text should a common
|
---|
| 604 | * mechanism not be available between the client and server.
|
---|
| 605 | */
|
---|
| 606 | static CURLcode imap_perform_authentication(struct connectdata *conn)
|
---|
| 607 | {
|
---|
| 608 | CURLcode result = CURLE_OK;
|
---|
| 609 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 610 | saslprogress progress;
|
---|
| 611 |
|
---|
| 612 | /* Check we have enough data to authenticate with and end the
|
---|
| 613 | connect phase if we don't */
|
---|
| 614 | if(!Curl_sasl_can_authenticate(&imapc->sasl, conn)) {
|
---|
| 615 | state(conn, IMAP_STOP);
|
---|
| 616 | return result;
|
---|
| 617 | }
|
---|
| 618 |
|
---|
| 619 | /* Calculate the SASL login details */
|
---|
| 620 | result = Curl_sasl_start(&imapc->sasl, conn, imapc->ir_supported, &progress);
|
---|
| 621 |
|
---|
| 622 | if(!result) {
|
---|
| 623 | if(progress == SASL_INPROGRESS)
|
---|
| 624 | state(conn, IMAP_AUTHENTICATE);
|
---|
| 625 | else if(!imapc->login_disabled && (imapc->preftype & IMAP_TYPE_CLEARTEXT))
|
---|
| 626 | /* Perform clear text authentication */
|
---|
| 627 | result = imap_perform_login(conn);
|
---|
| 628 | else {
|
---|
| 629 | /* Other mechanisms not supported */
|
---|
| 630 | infof(conn->data, "No known authentication mechanisms supported!\n");
|
---|
| 631 | result = CURLE_LOGIN_DENIED;
|
---|
| 632 | }
|
---|
| 633 | }
|
---|
| 634 |
|
---|
| 635 | return result;
|
---|
| 636 | }
|
---|
| 637 |
|
---|
| 638 | /***********************************************************************
|
---|
| 639 | *
|
---|
| 640 | * imap_perform_list()
|
---|
| 641 | *
|
---|
| 642 | * Sends a LIST command or an alternative custom request.
|
---|
| 643 | */
|
---|
| 644 | static CURLcode imap_perform_list(struct connectdata *conn)
|
---|
| 645 | {
|
---|
| 646 | CURLcode result = CURLE_OK;
|
---|
| 647 | struct SessionHandle *data = conn->data;
|
---|
| 648 | struct IMAP *imap = data->req.protop;
|
---|
| 649 | char *mailbox;
|
---|
| 650 |
|
---|
| 651 | if(imap->custom)
|
---|
| 652 | /* Send the custom request */
|
---|
| 653 | result = imap_sendf(conn, "%s%s", imap->custom,
|
---|
| 654 | imap->custom_params ? imap->custom_params : "");
|
---|
| 655 | else {
|
---|
| 656 | /* Make sure the mailbox is in the correct atom format if necessary */
|
---|
| 657 | mailbox = imap->mailbox ? imap_atom(imap->mailbox, true) : strdup("");
|
---|
| 658 | if(!mailbox)
|
---|
| 659 | return CURLE_OUT_OF_MEMORY;
|
---|
| 660 |
|
---|
| 661 | /* Send the LIST command */
|
---|
| 662 | result = imap_sendf(conn, "LIST \"%s\" *", mailbox);
|
---|
| 663 |
|
---|
| 664 | free(mailbox);
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 | if(!result)
|
---|
| 668 | state(conn, IMAP_LIST);
|
---|
| 669 |
|
---|
| 670 | return result;
|
---|
| 671 | }
|
---|
| 672 |
|
---|
| 673 | /***********************************************************************
|
---|
| 674 | *
|
---|
| 675 | * imap_perform_select()
|
---|
| 676 | *
|
---|
| 677 | * Sends a SELECT command to ask the server to change the selected mailbox.
|
---|
| 678 | */
|
---|
| 679 | static CURLcode imap_perform_select(struct connectdata *conn)
|
---|
| 680 | {
|
---|
| 681 | CURLcode result = CURLE_OK;
|
---|
| 682 | struct SessionHandle *data = conn->data;
|
---|
| 683 | struct IMAP *imap = data->req.protop;
|
---|
| 684 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 685 | char *mailbox;
|
---|
| 686 |
|
---|
| 687 | /* Invalidate old information as we are switching mailboxes */
|
---|
| 688 | Curl_safefree(imapc->mailbox);
|
---|
| 689 | Curl_safefree(imapc->mailbox_uidvalidity);
|
---|
| 690 |
|
---|
| 691 | /* Check we have a mailbox */
|
---|
| 692 | if(!imap->mailbox) {
|
---|
| 693 | failf(conn->data, "Cannot SELECT without a mailbox.");
|
---|
| 694 | return CURLE_URL_MALFORMAT;
|
---|
| 695 | }
|
---|
| 696 |
|
---|
| 697 | /* Make sure the mailbox is in the correct atom format */
|
---|
| 698 | mailbox = imap_atom(imap->mailbox, false);
|
---|
| 699 | if(!mailbox)
|
---|
| 700 | return CURLE_OUT_OF_MEMORY;
|
---|
| 701 |
|
---|
| 702 | /* Send the SELECT command */
|
---|
| 703 | result = imap_sendf(conn, "SELECT %s", mailbox);
|
---|
| 704 |
|
---|
| 705 | free(mailbox);
|
---|
| 706 |
|
---|
| 707 | if(!result)
|
---|
| 708 | state(conn, IMAP_SELECT);
|
---|
| 709 |
|
---|
| 710 | return result;
|
---|
| 711 | }
|
---|
| 712 |
|
---|
| 713 | /***********************************************************************
|
---|
| 714 | *
|
---|
| 715 | * imap_perform_fetch()
|
---|
| 716 | *
|
---|
| 717 | * Sends a FETCH command to initiate the download of a message.
|
---|
| 718 | */
|
---|
| 719 | static CURLcode imap_perform_fetch(struct connectdata *conn)
|
---|
| 720 | {
|
---|
| 721 | CURLcode result = CURLE_OK;
|
---|
| 722 | struct IMAP *imap = conn->data->req.protop;
|
---|
| 723 |
|
---|
| 724 | /* Check we have a UID */
|
---|
| 725 | if(!imap->uid) {
|
---|
| 726 | failf(conn->data, "Cannot FETCH without a UID.");
|
---|
| 727 | return CURLE_URL_MALFORMAT;
|
---|
| 728 | }
|
---|
| 729 |
|
---|
| 730 | /* Send the FETCH command */
|
---|
| 731 | if(imap->partial)
|
---|
| 732 | result = imap_sendf(conn, "FETCH %s BODY[%s]<%s>",
|
---|
| 733 | imap->uid,
|
---|
| 734 | imap->section ? imap->section : "",
|
---|
| 735 | imap->partial);
|
---|
| 736 | else
|
---|
| 737 | result = imap_sendf(conn, "FETCH %s BODY[%s]",
|
---|
| 738 | imap->uid,
|
---|
| 739 | imap->section ? imap->section : "");
|
---|
| 740 |
|
---|
| 741 | if(!result)
|
---|
| 742 | state(conn, IMAP_FETCH);
|
---|
| 743 |
|
---|
| 744 | return result;
|
---|
| 745 | }
|
---|
| 746 |
|
---|
| 747 | /***********************************************************************
|
---|
| 748 | *
|
---|
| 749 | * imap_perform_append()
|
---|
| 750 | *
|
---|
| 751 | * Sends an APPEND command to initiate the upload of a message.
|
---|
| 752 | */
|
---|
| 753 | static CURLcode imap_perform_append(struct connectdata *conn)
|
---|
| 754 | {
|
---|
| 755 | CURLcode result = CURLE_OK;
|
---|
| 756 | struct IMAP *imap = conn->data->req.protop;
|
---|
| 757 | char *mailbox;
|
---|
| 758 |
|
---|
| 759 | /* Check we have a mailbox */
|
---|
| 760 | if(!imap->mailbox) {
|
---|
| 761 | failf(conn->data, "Cannot APPEND without a mailbox.");
|
---|
| 762 | return CURLE_URL_MALFORMAT;
|
---|
| 763 | }
|
---|
| 764 |
|
---|
| 765 | /* Check we know the size of the upload */
|
---|
| 766 | if(conn->data->state.infilesize < 0) {
|
---|
| 767 | failf(conn->data, "Cannot APPEND with unknown input file size\n");
|
---|
| 768 | return CURLE_UPLOAD_FAILED;
|
---|
| 769 | }
|
---|
| 770 |
|
---|
| 771 | /* Make sure the mailbox is in the correct atom format */
|
---|
| 772 | mailbox = imap_atom(imap->mailbox, false);
|
---|
| 773 | if(!mailbox)
|
---|
| 774 | return CURLE_OUT_OF_MEMORY;
|
---|
| 775 |
|
---|
| 776 | /* Send the APPEND command */
|
---|
| 777 | result = imap_sendf(conn, "APPEND %s (\\Seen) {%" CURL_FORMAT_CURL_OFF_T "}",
|
---|
| 778 | mailbox, conn->data->state.infilesize);
|
---|
| 779 |
|
---|
| 780 | free(mailbox);
|
---|
| 781 |
|
---|
| 782 | if(!result)
|
---|
| 783 | state(conn, IMAP_APPEND);
|
---|
| 784 |
|
---|
| 785 | return result;
|
---|
| 786 | }
|
---|
| 787 |
|
---|
| 788 | /***********************************************************************
|
---|
| 789 | *
|
---|
| 790 | * imap_perform_search()
|
---|
| 791 | *
|
---|
| 792 | * Sends a SEARCH command.
|
---|
| 793 | */
|
---|
| 794 | static CURLcode imap_perform_search(struct connectdata *conn)
|
---|
| 795 | {
|
---|
| 796 | CURLcode result = CURLE_OK;
|
---|
| 797 | struct IMAP *imap = conn->data->req.protop;
|
---|
| 798 |
|
---|
| 799 | /* Check we have a query string */
|
---|
| 800 | if(!imap->query) {
|
---|
| 801 | failf(conn->data, "Cannot SEARCH without a query string.");
|
---|
| 802 | return CURLE_URL_MALFORMAT;
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | /* Send the SEARCH command */
|
---|
| 806 | result = imap_sendf(conn, "SEARCH %s", imap->query);
|
---|
| 807 |
|
---|
| 808 | if(!result)
|
---|
| 809 | state(conn, IMAP_SEARCH);
|
---|
| 810 |
|
---|
| 811 | return result;
|
---|
| 812 | }
|
---|
| 813 |
|
---|
| 814 | /***********************************************************************
|
---|
| 815 | *
|
---|
| 816 | * imap_perform_logout()
|
---|
| 817 | *
|
---|
| 818 | * Performs the logout action prior to sclose() being called.
|
---|
| 819 | */
|
---|
| 820 | static CURLcode imap_perform_logout(struct connectdata *conn)
|
---|
| 821 | {
|
---|
| 822 | CURLcode result = CURLE_OK;
|
---|
| 823 |
|
---|
| 824 | /* Send the LOGOUT command */
|
---|
| 825 | result = imap_sendf(conn, "LOGOUT");
|
---|
| 826 |
|
---|
| 827 | if(!result)
|
---|
| 828 | state(conn, IMAP_LOGOUT);
|
---|
| 829 |
|
---|
| 830 | return result;
|
---|
| 831 | }
|
---|
| 832 |
|
---|
| 833 | /* For the initial server greeting */
|
---|
| 834 | static CURLcode imap_state_servergreet_resp(struct connectdata *conn,
|
---|
| 835 | int imapcode,
|
---|
| 836 | imapstate instate)
|
---|
| 837 | {
|
---|
| 838 | CURLcode result = CURLE_OK;
|
---|
| 839 | struct SessionHandle *data = conn->data;
|
---|
| 840 |
|
---|
| 841 | (void)instate; /* no use for this yet */
|
---|
| 842 |
|
---|
| 843 | if(imapcode != 'O') {
|
---|
| 844 | failf(data, "Got unexpected imap-server response");
|
---|
| 845 | result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: fix this code */
|
---|
| 846 | }
|
---|
| 847 | else
|
---|
| 848 | result = imap_perform_capability(conn);
|
---|
| 849 |
|
---|
| 850 | return result;
|
---|
| 851 | }
|
---|
| 852 |
|
---|
| 853 | /* For CAPABILITY responses */
|
---|
| 854 | static CURLcode imap_state_capability_resp(struct connectdata *conn,
|
---|
| 855 | int imapcode,
|
---|
| 856 | imapstate instate)
|
---|
| 857 | {
|
---|
| 858 | CURLcode result = CURLE_OK;
|
---|
| 859 | struct SessionHandle *data = conn->data;
|
---|
| 860 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 861 | const char *line = data->state.buffer;
|
---|
| 862 | size_t wordlen;
|
---|
| 863 |
|
---|
| 864 | (void)instate; /* no use for this yet */
|
---|
| 865 |
|
---|
| 866 | /* Do we have a untagged response? */
|
---|
| 867 | if(imapcode == '*') {
|
---|
| 868 | line += 2;
|
---|
| 869 |
|
---|
| 870 | /* Loop through the data line */
|
---|
| 871 | for(;;) {
|
---|
| 872 | while(*line &&
|
---|
| 873 | (*line == ' ' || *line == '\t' ||
|
---|
| 874 | *line == '\r' || *line == '\n')) {
|
---|
| 875 |
|
---|
| 876 | line++;
|
---|
| 877 | }
|
---|
| 878 |
|
---|
| 879 | if(!*line)
|
---|
| 880 | break;
|
---|
| 881 |
|
---|
| 882 | /* Extract the word */
|
---|
| 883 | for(wordlen = 0; line[wordlen] && line[wordlen] != ' ' &&
|
---|
| 884 | line[wordlen] != '\t' && line[wordlen] != '\r' &&
|
---|
| 885 | line[wordlen] != '\n';)
|
---|
| 886 | wordlen++;
|
---|
| 887 |
|
---|
| 888 | /* Does the server support the STARTTLS capability? */
|
---|
| 889 | if(wordlen == 8 && !memcmp(line, "STARTTLS", 8))
|
---|
| 890 | imapc->tls_supported = TRUE;
|
---|
| 891 |
|
---|
| 892 | /* Has the server explicitly disabled clear text authentication? */
|
---|
| 893 | else if(wordlen == 13 && !memcmp(line, "LOGINDISABLED", 13))
|
---|
| 894 | imapc->login_disabled = TRUE;
|
---|
| 895 |
|
---|
| 896 | /* Does the server support the SASL-IR capability? */
|
---|
| 897 | else if(wordlen == 7 && !memcmp(line, "SASL-IR", 7))
|
---|
| 898 | imapc->ir_supported = TRUE;
|
---|
| 899 |
|
---|
| 900 | /* Do we have a SASL based authentication mechanism? */
|
---|
| 901 | else if(wordlen > 5 && !memcmp(line, "AUTH=", 5)) {
|
---|
| 902 | size_t llen;
|
---|
| 903 | unsigned int mechbit;
|
---|
| 904 |
|
---|
| 905 | line += 5;
|
---|
| 906 | wordlen -= 5;
|
---|
| 907 |
|
---|
| 908 | /* Test the word for a matching authentication mechanism */
|
---|
| 909 | if((mechbit = Curl_sasl_decode_mech(line, wordlen, &llen)) &&
|
---|
| 910 | llen == wordlen)
|
---|
| 911 | imapc->sasl.authmechs |= mechbit;
|
---|
| 912 | }
|
---|
| 913 |
|
---|
| 914 | line += wordlen;
|
---|
| 915 | }
|
---|
| 916 | }
|
---|
| 917 | else if(imapcode == 'O') {
|
---|
| 918 | if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
|
---|
| 919 | /* We don't have a SSL/TLS connection yet, but SSL is requested */
|
---|
| 920 | if(imapc->tls_supported)
|
---|
| 921 | /* Switch to TLS connection now */
|
---|
| 922 | result = imap_perform_starttls(conn);
|
---|
| 923 | else if(data->set.use_ssl == CURLUSESSL_TRY)
|
---|
| 924 | /* Fallback and carry on with authentication */
|
---|
| 925 | result = imap_perform_authentication(conn);
|
---|
| 926 | else {
|
---|
| 927 | failf(data, "STARTTLS not supported.");
|
---|
| 928 | result = CURLE_USE_SSL_FAILED;
|
---|
| 929 | }
|
---|
| 930 | }
|
---|
| 931 | else
|
---|
| 932 | result = imap_perform_authentication(conn);
|
---|
| 933 | }
|
---|
| 934 | else
|
---|
| 935 | result = imap_perform_authentication(conn);
|
---|
| 936 |
|
---|
| 937 | return result;
|
---|
| 938 | }
|
---|
| 939 |
|
---|
| 940 | /* For STARTTLS responses */
|
---|
| 941 | static CURLcode imap_state_starttls_resp(struct connectdata *conn,
|
---|
| 942 | int imapcode,
|
---|
| 943 | imapstate instate)
|
---|
| 944 | {
|
---|
| 945 | CURLcode result = CURLE_OK;
|
---|
| 946 | struct SessionHandle *data = conn->data;
|
---|
| 947 |
|
---|
| 948 | (void)instate; /* no use for this yet */
|
---|
| 949 |
|
---|
| 950 | if(imapcode != 'O') {
|
---|
| 951 | if(data->set.use_ssl != CURLUSESSL_TRY) {
|
---|
| 952 | failf(data, "STARTTLS denied. %c", imapcode);
|
---|
| 953 | result = CURLE_USE_SSL_FAILED;
|
---|
| 954 | }
|
---|
| 955 | else
|
---|
| 956 | result = imap_perform_authentication(conn);
|
---|
| 957 | }
|
---|
| 958 | else
|
---|
| 959 | result = imap_perform_upgrade_tls(conn);
|
---|
| 960 |
|
---|
| 961 | return result;
|
---|
| 962 | }
|
---|
| 963 |
|
---|
| 964 | /* For SASL authentication responses */
|
---|
| 965 | static CURLcode imap_state_auth_resp(struct connectdata *conn,
|
---|
| 966 | int imapcode,
|
---|
| 967 | imapstate instate)
|
---|
| 968 | {
|
---|
| 969 | CURLcode result = CURLE_OK;
|
---|
| 970 | struct SessionHandle *data = conn->data;
|
---|
| 971 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 972 | saslprogress progress;
|
---|
| 973 |
|
---|
| 974 | (void)instate; /* no use for this yet */
|
---|
| 975 |
|
---|
| 976 | result = Curl_sasl_continue(&imapc->sasl, conn, imapcode, &progress);
|
---|
| 977 | if(!result)
|
---|
| 978 | switch(progress) {
|
---|
| 979 | case SASL_DONE:
|
---|
| 980 | state(conn, IMAP_STOP); /* Authenticated */
|
---|
| 981 | break;
|
---|
| 982 | case SASL_IDLE: /* No mechanism left after cancellation */
|
---|
| 983 | if((!imapc->login_disabled) && (imapc->preftype & IMAP_TYPE_CLEARTEXT))
|
---|
| 984 | /* Perform clear text authentication */
|
---|
| 985 | result = imap_perform_login(conn);
|
---|
| 986 | else {
|
---|
| 987 | failf(data, "Authentication cancelled");
|
---|
| 988 | result = CURLE_LOGIN_DENIED;
|
---|
| 989 | }
|
---|
| 990 | break;
|
---|
| 991 | default:
|
---|
| 992 | break;
|
---|
| 993 | }
|
---|
| 994 |
|
---|
| 995 | return result;
|
---|
| 996 | }
|
---|
| 997 |
|
---|
| 998 | /* For LOGIN responses */
|
---|
| 999 | static CURLcode imap_state_login_resp(struct connectdata *conn,
|
---|
| 1000 | int imapcode,
|
---|
| 1001 | imapstate instate)
|
---|
| 1002 | {
|
---|
| 1003 | CURLcode result = CURLE_OK;
|
---|
| 1004 | struct SessionHandle *data = conn->data;
|
---|
| 1005 |
|
---|
| 1006 | (void)instate; /* no use for this yet */
|
---|
| 1007 |
|
---|
| 1008 | if(imapcode != 'O') {
|
---|
| 1009 | failf(data, "Access denied. %c", imapcode);
|
---|
| 1010 | result = CURLE_LOGIN_DENIED;
|
---|
| 1011 | }
|
---|
| 1012 | else
|
---|
| 1013 | /* End of connect phase */
|
---|
| 1014 | state(conn, IMAP_STOP);
|
---|
| 1015 |
|
---|
| 1016 | return result;
|
---|
| 1017 | }
|
---|
| 1018 |
|
---|
| 1019 | /* For LIST responses */
|
---|
| 1020 | static CURLcode imap_state_list_resp(struct connectdata *conn, int imapcode,
|
---|
| 1021 | imapstate instate)
|
---|
| 1022 | {
|
---|
| 1023 | CURLcode result = CURLE_OK;
|
---|
| 1024 | char *line = conn->data->state.buffer;
|
---|
| 1025 | size_t len = strlen(line);
|
---|
| 1026 |
|
---|
| 1027 | (void)instate; /* No use for this yet */
|
---|
| 1028 |
|
---|
| 1029 | if(imapcode == '*') {
|
---|
| 1030 | /* Temporarily add the LF character back and send as body to the client */
|
---|
| 1031 | line[len] = '\n';
|
---|
| 1032 | result = Curl_client_write(conn, CLIENTWRITE_BODY, line, len + 1);
|
---|
| 1033 | line[len] = '\0';
|
---|
| 1034 | }
|
---|
| 1035 | else if(imapcode != 'O')
|
---|
| 1036 | result = CURLE_QUOTE_ERROR; /* TODO: Fix error code */
|
---|
| 1037 | else
|
---|
| 1038 | /* End of DO phase */
|
---|
| 1039 | state(conn, IMAP_STOP);
|
---|
| 1040 |
|
---|
| 1041 | return result;
|
---|
| 1042 | }
|
---|
| 1043 |
|
---|
| 1044 | /* For SELECT responses */
|
---|
| 1045 | static CURLcode imap_state_select_resp(struct connectdata *conn, int imapcode,
|
---|
| 1046 | imapstate instate)
|
---|
| 1047 | {
|
---|
| 1048 | CURLcode result = CURLE_OK;
|
---|
| 1049 | struct SessionHandle *data = conn->data;
|
---|
| 1050 | struct IMAP *imap = conn->data->req.protop;
|
---|
| 1051 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1052 | const char *line = data->state.buffer;
|
---|
| 1053 | char tmp[20];
|
---|
| 1054 |
|
---|
| 1055 | (void)instate; /* no use for this yet */
|
---|
| 1056 |
|
---|
| 1057 | if(imapcode == '*') {
|
---|
| 1058 | /* See if this is an UIDVALIDITY response */
|
---|
| 1059 | if(sscanf(line + 2, "OK [UIDVALIDITY %19[0123456789]]", tmp) == 1) {
|
---|
| 1060 | Curl_safefree(imapc->mailbox_uidvalidity);
|
---|
| 1061 | imapc->mailbox_uidvalidity = strdup(tmp);
|
---|
| 1062 | }
|
---|
| 1063 | }
|
---|
| 1064 | else if(imapcode == 'O') {
|
---|
| 1065 | /* Check if the UIDVALIDITY has been specified and matches */
|
---|
| 1066 | if(imap->uidvalidity && imapc->mailbox_uidvalidity &&
|
---|
| 1067 | strcmp(imap->uidvalidity, imapc->mailbox_uidvalidity)) {
|
---|
| 1068 | failf(conn->data, "Mailbox UIDVALIDITY has changed");
|
---|
| 1069 | result = CURLE_REMOTE_FILE_NOT_FOUND;
|
---|
| 1070 | }
|
---|
| 1071 | else {
|
---|
| 1072 | /* Note the currently opened mailbox on this connection */
|
---|
| 1073 | imapc->mailbox = strdup(imap->mailbox);
|
---|
| 1074 |
|
---|
| 1075 | if(imap->custom)
|
---|
| 1076 | result = imap_perform_list(conn);
|
---|
| 1077 | else if(imap->query)
|
---|
| 1078 | result = imap_perform_search(conn);
|
---|
| 1079 | else
|
---|
| 1080 | result = imap_perform_fetch(conn);
|
---|
| 1081 | }
|
---|
| 1082 | }
|
---|
| 1083 | else {
|
---|
| 1084 | failf(data, "Select failed");
|
---|
| 1085 | result = CURLE_LOGIN_DENIED;
|
---|
| 1086 | }
|
---|
| 1087 |
|
---|
| 1088 | return result;
|
---|
| 1089 | }
|
---|
| 1090 |
|
---|
| 1091 | /* For the (first line of the) FETCH responses */
|
---|
| 1092 | static CURLcode imap_state_fetch_resp(struct connectdata *conn, int imapcode,
|
---|
| 1093 | imapstate instate)
|
---|
| 1094 | {
|
---|
| 1095 | CURLcode result = CURLE_OK;
|
---|
| 1096 | struct SessionHandle *data = conn->data;
|
---|
| 1097 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1098 | struct pingpong *pp = &imapc->pp;
|
---|
| 1099 | const char *ptr = data->state.buffer;
|
---|
| 1100 | bool parsed = FALSE;
|
---|
| 1101 | curl_off_t size;
|
---|
| 1102 |
|
---|
| 1103 | (void)instate; /* no use for this yet */
|
---|
| 1104 |
|
---|
| 1105 | if(imapcode != '*') {
|
---|
| 1106 | Curl_pgrsSetDownloadSize(data, -1);
|
---|
| 1107 | state(conn, IMAP_STOP);
|
---|
| 1108 | return CURLE_REMOTE_FILE_NOT_FOUND; /* TODO: Fix error code */
|
---|
| 1109 | }
|
---|
| 1110 |
|
---|
| 1111 | /* Something like this is received "* 1 FETCH (BODY[TEXT] {2021}\r" so parse
|
---|
| 1112 | the continuation data contained within the curly brackets */
|
---|
| 1113 | while(*ptr && (*ptr != '{'))
|
---|
| 1114 | ptr++;
|
---|
| 1115 |
|
---|
| 1116 | if(*ptr == '{') {
|
---|
| 1117 | char *endptr;
|
---|
| 1118 | size = curlx_strtoofft(ptr + 1, &endptr, 10);
|
---|
| 1119 | if(endptr - ptr > 1 && endptr[0] == '}' &&
|
---|
| 1120 | endptr[1] == '\r' && endptr[2] == '\0')
|
---|
| 1121 | parsed = TRUE;
|
---|
| 1122 | }
|
---|
| 1123 |
|
---|
| 1124 | if(parsed) {
|
---|
| 1125 | infof(data, "Found %" CURL_FORMAT_CURL_OFF_TU " bytes to download\n",
|
---|
| 1126 | size);
|
---|
| 1127 | Curl_pgrsSetDownloadSize(data, size);
|
---|
| 1128 |
|
---|
| 1129 | if(pp->cache) {
|
---|
| 1130 | /* At this point there is a bunch of data in the header "cache" that is
|
---|
| 1131 | actually body content, send it as body and then skip it. Do note
|
---|
| 1132 | that there may even be additional "headers" after the body. */
|
---|
| 1133 | size_t chunk = pp->cache_size;
|
---|
| 1134 |
|
---|
| 1135 | if(chunk > (size_t)size)
|
---|
| 1136 | /* The conversion from curl_off_t to size_t is always fine here */
|
---|
| 1137 | chunk = (size_t)size;
|
---|
| 1138 |
|
---|
| 1139 | result = Curl_client_write(conn, CLIENTWRITE_BODY, pp->cache, chunk);
|
---|
| 1140 | if(result)
|
---|
| 1141 | return result;
|
---|
| 1142 |
|
---|
| 1143 | data->req.bytecount += chunk;
|
---|
| 1144 |
|
---|
| 1145 | infof(data, "Written %" CURL_FORMAT_CURL_OFF_TU
|
---|
| 1146 | " bytes, %" CURL_FORMAT_CURL_OFF_TU
|
---|
| 1147 | " bytes are left for transfer\n", (curl_off_t)chunk,
|
---|
| 1148 | size - chunk);
|
---|
| 1149 |
|
---|
| 1150 | /* Have we used the entire cache or just part of it?*/
|
---|
| 1151 | if(pp->cache_size > chunk) {
|
---|
| 1152 | /* Only part of it so shrink the cache to fit the trailing data */
|
---|
| 1153 | memmove(pp->cache, pp->cache + chunk, pp->cache_size - chunk);
|
---|
| 1154 | pp->cache_size -= chunk;
|
---|
| 1155 | }
|
---|
| 1156 | else {
|
---|
| 1157 | /* Free the cache */
|
---|
| 1158 | Curl_safefree(pp->cache);
|
---|
| 1159 |
|
---|
| 1160 | /* Reset the cache size */
|
---|
| 1161 | pp->cache_size = 0;
|
---|
| 1162 | }
|
---|
| 1163 | }
|
---|
| 1164 |
|
---|
| 1165 | if(data->req.bytecount == size)
|
---|
| 1166 | /* The entire data is already transferred! */
|
---|
| 1167 | Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
|
---|
| 1168 | else {
|
---|
| 1169 | /* IMAP download */
|
---|
| 1170 | data->req.maxdownload = size;
|
---|
| 1171 | Curl_setup_transfer(conn, FIRSTSOCKET, size, FALSE, NULL, -1, NULL);
|
---|
| 1172 | }
|
---|
| 1173 | }
|
---|
| 1174 | else {
|
---|
| 1175 | /* We don't know how to parse this line */
|
---|
| 1176 | failf(pp->conn->data, "Failed to parse FETCH response.");
|
---|
| 1177 | result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: fix this code */
|
---|
| 1178 | }
|
---|
| 1179 |
|
---|
| 1180 | /* End of DO phase */
|
---|
| 1181 | state(conn, IMAP_STOP);
|
---|
| 1182 |
|
---|
| 1183 | return result;
|
---|
| 1184 | }
|
---|
| 1185 |
|
---|
| 1186 | /* For final FETCH responses performed after the download */
|
---|
| 1187 | static CURLcode imap_state_fetch_final_resp(struct connectdata *conn,
|
---|
| 1188 | int imapcode,
|
---|
| 1189 | imapstate instate)
|
---|
| 1190 | {
|
---|
| 1191 | CURLcode result = CURLE_OK;
|
---|
| 1192 |
|
---|
| 1193 | (void)instate; /* No use for this yet */
|
---|
| 1194 |
|
---|
| 1195 | if(imapcode != 'O')
|
---|
| 1196 | result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: Fix error code */
|
---|
| 1197 | else
|
---|
| 1198 | /* End of DONE phase */
|
---|
| 1199 | state(conn, IMAP_STOP);
|
---|
| 1200 |
|
---|
| 1201 | return result;
|
---|
| 1202 | }
|
---|
| 1203 |
|
---|
| 1204 | /* For APPEND responses */
|
---|
| 1205 | static CURLcode imap_state_append_resp(struct connectdata *conn, int imapcode,
|
---|
| 1206 | imapstate instate)
|
---|
| 1207 | {
|
---|
| 1208 | CURLcode result = CURLE_OK;
|
---|
| 1209 | struct SessionHandle *data = conn->data;
|
---|
| 1210 |
|
---|
| 1211 | (void)instate; /* No use for this yet */
|
---|
| 1212 |
|
---|
| 1213 | if(imapcode != '+') {
|
---|
| 1214 | result = CURLE_UPLOAD_FAILED;
|
---|
| 1215 | }
|
---|
| 1216 | else {
|
---|
| 1217 | /* Set the progress upload size */
|
---|
| 1218 | Curl_pgrsSetUploadSize(data, data->state.infilesize);
|
---|
| 1219 |
|
---|
| 1220 | /* IMAP upload */
|
---|
| 1221 | Curl_setup_transfer(conn, -1, -1, FALSE, NULL, FIRSTSOCKET, NULL);
|
---|
| 1222 |
|
---|
| 1223 | /* End of DO phase */
|
---|
| 1224 | state(conn, IMAP_STOP);
|
---|
| 1225 | }
|
---|
| 1226 |
|
---|
| 1227 | return result;
|
---|
| 1228 | }
|
---|
| 1229 |
|
---|
| 1230 | /* For final APPEND responses performed after the upload */
|
---|
| 1231 | static CURLcode imap_state_append_final_resp(struct connectdata *conn,
|
---|
| 1232 | int imapcode,
|
---|
| 1233 | imapstate instate)
|
---|
| 1234 | {
|
---|
| 1235 | CURLcode result = CURLE_OK;
|
---|
| 1236 |
|
---|
| 1237 | (void)instate; /* No use for this yet */
|
---|
| 1238 |
|
---|
| 1239 | if(imapcode != 'O')
|
---|
| 1240 | result = CURLE_UPLOAD_FAILED;
|
---|
| 1241 | else
|
---|
| 1242 | /* End of DONE phase */
|
---|
| 1243 | state(conn, IMAP_STOP);
|
---|
| 1244 |
|
---|
| 1245 | return result;
|
---|
| 1246 | }
|
---|
| 1247 |
|
---|
| 1248 | /* For SEARCH responses */
|
---|
| 1249 | static CURLcode imap_state_search_resp(struct connectdata *conn, int imapcode,
|
---|
| 1250 | imapstate instate)
|
---|
| 1251 | {
|
---|
| 1252 | CURLcode result = CURLE_OK;
|
---|
| 1253 | char *line = conn->data->state.buffer;
|
---|
| 1254 | size_t len = strlen(line);
|
---|
| 1255 |
|
---|
| 1256 | (void)instate; /* No use for this yet */
|
---|
| 1257 |
|
---|
| 1258 | if(imapcode == '*') {
|
---|
| 1259 | /* Temporarily add the LF character back and send as body to the client */
|
---|
| 1260 | line[len] = '\n';
|
---|
| 1261 | result = Curl_client_write(conn, CLIENTWRITE_BODY, line, len + 1);
|
---|
| 1262 | line[len] = '\0';
|
---|
| 1263 | }
|
---|
| 1264 | else if(imapcode != 'O')
|
---|
| 1265 | result = CURLE_QUOTE_ERROR; /* TODO: Fix error code */
|
---|
| 1266 | else
|
---|
| 1267 | /* End of DO phase */
|
---|
| 1268 | state(conn, IMAP_STOP);
|
---|
| 1269 |
|
---|
| 1270 | return result;
|
---|
| 1271 | }
|
---|
| 1272 |
|
---|
| 1273 | static CURLcode imap_statemach_act(struct connectdata *conn)
|
---|
| 1274 | {
|
---|
| 1275 | CURLcode result = CURLE_OK;
|
---|
| 1276 | curl_socket_t sock = conn->sock[FIRSTSOCKET];
|
---|
| 1277 | int imapcode;
|
---|
| 1278 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1279 | struct pingpong *pp = &imapc->pp;
|
---|
| 1280 | size_t nread = 0;
|
---|
| 1281 |
|
---|
| 1282 | /* Busy upgrading the connection; right now all I/O is SSL/TLS, not IMAP */
|
---|
| 1283 | if(imapc->state == IMAP_UPGRADETLS)
|
---|
| 1284 | return imap_perform_upgrade_tls(conn);
|
---|
| 1285 |
|
---|
| 1286 | /* Flush any data that needs to be sent */
|
---|
| 1287 | if(pp->sendleft)
|
---|
| 1288 | return Curl_pp_flushsend(pp);
|
---|
| 1289 |
|
---|
| 1290 | do {
|
---|
| 1291 | /* Read the response from the server */
|
---|
| 1292 | result = Curl_pp_readresp(sock, pp, &imapcode, &nread);
|
---|
| 1293 | if(result)
|
---|
| 1294 | return result;
|
---|
| 1295 |
|
---|
| 1296 | /* Was there an error parsing the response line? */
|
---|
| 1297 | if(imapcode == -1)
|
---|
| 1298 | return CURLE_FTP_WEIRD_SERVER_REPLY;
|
---|
| 1299 |
|
---|
| 1300 | if(!imapcode)
|
---|
| 1301 | break;
|
---|
| 1302 |
|
---|
| 1303 | /* We have now received a full IMAP server response */
|
---|
| 1304 | switch(imapc->state) {
|
---|
| 1305 | case IMAP_SERVERGREET:
|
---|
| 1306 | result = imap_state_servergreet_resp(conn, imapcode, imapc->state);
|
---|
| 1307 | break;
|
---|
| 1308 |
|
---|
| 1309 | case IMAP_CAPABILITY:
|
---|
| 1310 | result = imap_state_capability_resp(conn, imapcode, imapc->state);
|
---|
| 1311 | break;
|
---|
| 1312 |
|
---|
| 1313 | case IMAP_STARTTLS:
|
---|
| 1314 | result = imap_state_starttls_resp(conn, imapcode, imapc->state);
|
---|
| 1315 | break;
|
---|
| 1316 |
|
---|
| 1317 | case IMAP_AUTHENTICATE:
|
---|
| 1318 | result = imap_state_auth_resp(conn, imapcode, imapc->state);
|
---|
| 1319 | break;
|
---|
| 1320 |
|
---|
| 1321 | case IMAP_LOGIN:
|
---|
| 1322 | result = imap_state_login_resp(conn, imapcode, imapc->state);
|
---|
| 1323 | break;
|
---|
| 1324 |
|
---|
| 1325 | case IMAP_LIST:
|
---|
| 1326 | result = imap_state_list_resp(conn, imapcode, imapc->state);
|
---|
| 1327 | break;
|
---|
| 1328 |
|
---|
| 1329 | case IMAP_SELECT:
|
---|
| 1330 | result = imap_state_select_resp(conn, imapcode, imapc->state);
|
---|
| 1331 | break;
|
---|
| 1332 |
|
---|
| 1333 | case IMAP_FETCH:
|
---|
| 1334 | result = imap_state_fetch_resp(conn, imapcode, imapc->state);
|
---|
| 1335 | break;
|
---|
| 1336 |
|
---|
| 1337 | case IMAP_FETCH_FINAL:
|
---|
| 1338 | result = imap_state_fetch_final_resp(conn, imapcode, imapc->state);
|
---|
| 1339 | break;
|
---|
| 1340 |
|
---|
| 1341 | case IMAP_APPEND:
|
---|
| 1342 | result = imap_state_append_resp(conn, imapcode, imapc->state);
|
---|
| 1343 | break;
|
---|
| 1344 |
|
---|
| 1345 | case IMAP_APPEND_FINAL:
|
---|
| 1346 | result = imap_state_append_final_resp(conn, imapcode, imapc->state);
|
---|
| 1347 | break;
|
---|
| 1348 |
|
---|
| 1349 | case IMAP_SEARCH:
|
---|
| 1350 | result = imap_state_search_resp(conn, imapcode, imapc->state);
|
---|
| 1351 | break;
|
---|
| 1352 |
|
---|
| 1353 | case IMAP_LOGOUT:
|
---|
| 1354 | /* fallthrough, just stop! */
|
---|
| 1355 | default:
|
---|
| 1356 | /* internal error */
|
---|
| 1357 | state(conn, IMAP_STOP);
|
---|
| 1358 | break;
|
---|
| 1359 | }
|
---|
| 1360 | } while(!result && imapc->state != IMAP_STOP && Curl_pp_moredata(pp));
|
---|
| 1361 |
|
---|
| 1362 | return result;
|
---|
| 1363 | }
|
---|
| 1364 |
|
---|
| 1365 | /* Called repeatedly until done from multi.c */
|
---|
| 1366 | static CURLcode imap_multi_statemach(struct connectdata *conn, bool *done)
|
---|
| 1367 | {
|
---|
| 1368 | CURLcode result = CURLE_OK;
|
---|
| 1369 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1370 |
|
---|
| 1371 | if((conn->handler->flags & PROTOPT_SSL) && !imapc->ssldone) {
|
---|
| 1372 | result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &imapc->ssldone);
|
---|
| 1373 | if(result || !imapc->ssldone)
|
---|
| 1374 | return result;
|
---|
| 1375 | }
|
---|
| 1376 |
|
---|
| 1377 | result = Curl_pp_statemach(&imapc->pp, FALSE);
|
---|
| 1378 | *done = (imapc->state == IMAP_STOP) ? TRUE : FALSE;
|
---|
| 1379 |
|
---|
| 1380 | return result;
|
---|
| 1381 | }
|
---|
| 1382 |
|
---|
| 1383 | static CURLcode imap_block_statemach(struct connectdata *conn)
|
---|
| 1384 | {
|
---|
| 1385 | CURLcode result = CURLE_OK;
|
---|
| 1386 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1387 |
|
---|
| 1388 | while(imapc->state != IMAP_STOP && !result)
|
---|
| 1389 | result = Curl_pp_statemach(&imapc->pp, TRUE);
|
---|
| 1390 |
|
---|
| 1391 | return result;
|
---|
| 1392 | }
|
---|
| 1393 |
|
---|
| 1394 | /* Allocate and initialize the struct IMAP for the current SessionHandle if
|
---|
| 1395 | required */
|
---|
| 1396 | static CURLcode imap_init(struct connectdata *conn)
|
---|
| 1397 | {
|
---|
| 1398 | CURLcode result = CURLE_OK;
|
---|
| 1399 | struct SessionHandle *data = conn->data;
|
---|
| 1400 | struct IMAP *imap;
|
---|
| 1401 |
|
---|
| 1402 | imap = data->req.protop = calloc(sizeof(struct IMAP), 1);
|
---|
| 1403 | if(!imap)
|
---|
| 1404 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 1405 |
|
---|
| 1406 | return result;
|
---|
| 1407 | }
|
---|
| 1408 |
|
---|
| 1409 | /* For the IMAP "protocol connect" and "doing" phases only */
|
---|
| 1410 | static int imap_getsock(struct connectdata *conn, curl_socket_t *socks,
|
---|
| 1411 | int numsocks)
|
---|
| 1412 | {
|
---|
| 1413 | return Curl_pp_getsock(&conn->proto.imapc.pp, socks, numsocks);
|
---|
| 1414 | }
|
---|
| 1415 |
|
---|
| 1416 | /***********************************************************************
|
---|
| 1417 | *
|
---|
| 1418 | * imap_connect()
|
---|
| 1419 | *
|
---|
| 1420 | * This function should do everything that is to be considered a part of the
|
---|
| 1421 | * connection phase.
|
---|
| 1422 | *
|
---|
| 1423 | * The variable 'done' points to will be TRUE if the protocol-layer connect
|
---|
| 1424 | * phase is done when this function returns, or FALSE if not.
|
---|
| 1425 | */
|
---|
| 1426 | static CURLcode imap_connect(struct connectdata *conn, bool *done)
|
---|
| 1427 | {
|
---|
| 1428 | CURLcode result = CURLE_OK;
|
---|
| 1429 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1430 | struct pingpong *pp = &imapc->pp;
|
---|
| 1431 |
|
---|
| 1432 | *done = FALSE; /* default to not done yet */
|
---|
| 1433 |
|
---|
| 1434 | /* We always support persistent connections in IMAP */
|
---|
| 1435 | connkeep(conn, "IMAP default");
|
---|
| 1436 |
|
---|
| 1437 | /* Set the default response time-out */
|
---|
| 1438 | pp->response_time = RESP_TIMEOUT;
|
---|
| 1439 | pp->statemach_act = imap_statemach_act;
|
---|
| 1440 | pp->endofresp = imap_endofresp;
|
---|
| 1441 | pp->conn = conn;
|
---|
| 1442 |
|
---|
| 1443 | /* Set the default preferred authentication type and mechanism */
|
---|
| 1444 | imapc->preftype = IMAP_TYPE_ANY;
|
---|
| 1445 | Curl_sasl_init(&imapc->sasl, &saslimap);
|
---|
| 1446 |
|
---|
| 1447 | /* Initialise the pingpong layer */
|
---|
| 1448 | Curl_pp_init(pp);
|
---|
| 1449 |
|
---|
| 1450 | /* Parse the URL options */
|
---|
| 1451 | result = imap_parse_url_options(conn);
|
---|
| 1452 | if(result)
|
---|
| 1453 | return result;
|
---|
| 1454 |
|
---|
| 1455 | /* Start off waiting for the server greeting response */
|
---|
| 1456 | state(conn, IMAP_SERVERGREET);
|
---|
| 1457 |
|
---|
| 1458 | /* Start off with an response id of '*' */
|
---|
| 1459 | strcpy(imapc->resptag, "*");
|
---|
| 1460 |
|
---|
| 1461 | result = imap_multi_statemach(conn, done);
|
---|
| 1462 |
|
---|
| 1463 | return result;
|
---|
| 1464 | }
|
---|
| 1465 |
|
---|
| 1466 | /***********************************************************************
|
---|
| 1467 | *
|
---|
| 1468 | * imap_done()
|
---|
| 1469 | *
|
---|
| 1470 | * The DONE function. This does what needs to be done after a single DO has
|
---|
| 1471 | * performed.
|
---|
| 1472 | *
|
---|
| 1473 | * Input argument is already checked for validity.
|
---|
| 1474 | */
|
---|
| 1475 | static CURLcode imap_done(struct connectdata *conn, CURLcode status,
|
---|
| 1476 | bool premature)
|
---|
| 1477 | {
|
---|
| 1478 | CURLcode result = CURLE_OK;
|
---|
| 1479 | struct SessionHandle *data = conn->data;
|
---|
| 1480 | struct IMAP *imap = data->req.protop;
|
---|
| 1481 |
|
---|
| 1482 | (void)premature;
|
---|
| 1483 |
|
---|
| 1484 | if(!imap)
|
---|
| 1485 | /* When the easy handle is removed from the multi interface while libcurl
|
---|
| 1486 | is still trying to resolve the host name, the IMAP struct is not yet
|
---|
| 1487 | initialized. However, the removal action calls Curl_done() which in
|
---|
| 1488 | turn calls this function, so we simply return success. */
|
---|
| 1489 | return CURLE_OK;
|
---|
| 1490 |
|
---|
| 1491 | if(status) {
|
---|
| 1492 | connclose(conn, "IMAP done with bad status"); /* marked for closure */
|
---|
| 1493 | result = status; /* use the already set error code */
|
---|
| 1494 | }
|
---|
| 1495 | else if(!data->set.connect_only && !imap->custom &&
|
---|
| 1496 | (imap->uid || data->set.upload)) {
|
---|
| 1497 | /* Handle responses after FETCH or APPEND transfer has finished */
|
---|
| 1498 | if(!data->set.upload)
|
---|
| 1499 | state(conn, IMAP_FETCH_FINAL);
|
---|
| 1500 | else {
|
---|
| 1501 | /* End the APPEND command first by sending an empty line */
|
---|
| 1502 | result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", "");
|
---|
| 1503 | if(!result)
|
---|
| 1504 | state(conn, IMAP_APPEND_FINAL);
|
---|
| 1505 | }
|
---|
| 1506 |
|
---|
| 1507 | /* Run the state-machine
|
---|
| 1508 |
|
---|
| 1509 | TODO: when the multi interface is used, this _really_ should be using
|
---|
| 1510 | the imap_multi_statemach function but we have no general support for
|
---|
| 1511 | non-blocking DONE operations, not in the multi state machine and with
|
---|
| 1512 | Curl_done() invokes on several places in the code!
|
---|
| 1513 | */
|
---|
| 1514 | if(!result)
|
---|
| 1515 | result = imap_block_statemach(conn);
|
---|
| 1516 | }
|
---|
| 1517 |
|
---|
| 1518 | /* Cleanup our per-request based variables */
|
---|
| 1519 | Curl_safefree(imap->mailbox);
|
---|
| 1520 | Curl_safefree(imap->uidvalidity);
|
---|
| 1521 | Curl_safefree(imap->uid);
|
---|
| 1522 | Curl_safefree(imap->section);
|
---|
| 1523 | Curl_safefree(imap->partial);
|
---|
| 1524 | Curl_safefree(imap->query);
|
---|
| 1525 | Curl_safefree(imap->custom);
|
---|
| 1526 | Curl_safefree(imap->custom_params);
|
---|
| 1527 |
|
---|
| 1528 | /* Clear the transfer mode for the next request */
|
---|
| 1529 | imap->transfer = FTPTRANSFER_BODY;
|
---|
| 1530 |
|
---|
| 1531 | return result;
|
---|
| 1532 | }
|
---|
| 1533 |
|
---|
| 1534 | /***********************************************************************
|
---|
| 1535 | *
|
---|
| 1536 | * imap_perform()
|
---|
| 1537 | *
|
---|
| 1538 | * This is the actual DO function for IMAP. Fetch or append a message, or do
|
---|
| 1539 | * other things according to the options previously setup.
|
---|
| 1540 | */
|
---|
| 1541 | static CURLcode imap_perform(struct connectdata *conn, bool *connected,
|
---|
| 1542 | bool *dophase_done)
|
---|
| 1543 | {
|
---|
| 1544 | /* This is IMAP and no proxy */
|
---|
| 1545 | CURLcode result = CURLE_OK;
|
---|
| 1546 | struct SessionHandle *data = conn->data;
|
---|
| 1547 | struct IMAP *imap = data->req.protop;
|
---|
| 1548 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1549 | bool selected = FALSE;
|
---|
| 1550 |
|
---|
| 1551 | DEBUGF(infof(conn->data, "DO phase starts\n"));
|
---|
| 1552 |
|
---|
| 1553 | if(conn->data->set.opt_no_body) {
|
---|
| 1554 | /* Requested no body means no transfer */
|
---|
| 1555 | imap->transfer = FTPTRANSFER_INFO;
|
---|
| 1556 | }
|
---|
| 1557 |
|
---|
| 1558 | *dophase_done = FALSE; /* not done yet */
|
---|
| 1559 |
|
---|
| 1560 | /* Determine if the requested mailbox (with the same UIDVALIDITY if set)
|
---|
| 1561 | has already been selected on this connection */
|
---|
| 1562 | if(imap->mailbox && imapc->mailbox &&
|
---|
| 1563 | !strcmp(imap->mailbox, imapc->mailbox) &&
|
---|
| 1564 | (!imap->uidvalidity || !imapc->mailbox_uidvalidity ||
|
---|
| 1565 | !strcmp(imap->uidvalidity, imapc->mailbox_uidvalidity)))
|
---|
| 1566 | selected = TRUE;
|
---|
| 1567 |
|
---|
| 1568 | /* Start the first command in the DO phase */
|
---|
| 1569 | if(conn->data->set.upload)
|
---|
| 1570 | /* APPEND can be executed directly */
|
---|
| 1571 | result = imap_perform_append(conn);
|
---|
| 1572 | else if(imap->custom && (selected || !imap->mailbox))
|
---|
| 1573 | /* Custom command using the same mailbox or no mailbox */
|
---|
| 1574 | result = imap_perform_list(conn);
|
---|
| 1575 | else if(!imap->custom && selected && imap->uid)
|
---|
| 1576 | /* FETCH from the same mailbox */
|
---|
| 1577 | result = imap_perform_fetch(conn);
|
---|
| 1578 | else if(!imap->custom && selected && imap->query)
|
---|
| 1579 | /* SEARCH the current mailbox */
|
---|
| 1580 | result = imap_perform_search(conn);
|
---|
| 1581 | else if(imap->mailbox && !selected &&
|
---|
| 1582 | (imap->custom || imap->uid || imap->query))
|
---|
| 1583 | /* SELECT the mailbox */
|
---|
| 1584 | result = imap_perform_select(conn);
|
---|
| 1585 | else
|
---|
| 1586 | /* LIST */
|
---|
| 1587 | result = imap_perform_list(conn);
|
---|
| 1588 |
|
---|
| 1589 | if(result)
|
---|
| 1590 | return result;
|
---|
| 1591 |
|
---|
| 1592 | /* Run the state-machine */
|
---|
| 1593 | result = imap_multi_statemach(conn, dophase_done);
|
---|
| 1594 |
|
---|
| 1595 | *connected = conn->bits.tcpconnect[FIRSTSOCKET];
|
---|
| 1596 |
|
---|
| 1597 | if(*dophase_done)
|
---|
| 1598 | DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
---|
| 1599 |
|
---|
| 1600 | return result;
|
---|
| 1601 | }
|
---|
| 1602 |
|
---|
| 1603 | /***********************************************************************
|
---|
| 1604 | *
|
---|
| 1605 | * imap_do()
|
---|
| 1606 | *
|
---|
| 1607 | * This function is registered as 'curl_do' function. It decodes the path
|
---|
| 1608 | * parts etc as a wrapper to the actual DO function (imap_perform).
|
---|
| 1609 | *
|
---|
| 1610 | * The input argument is already checked for validity.
|
---|
| 1611 | */
|
---|
| 1612 | static CURLcode imap_do(struct connectdata *conn, bool *done)
|
---|
| 1613 | {
|
---|
| 1614 | CURLcode result = CURLE_OK;
|
---|
| 1615 |
|
---|
| 1616 | *done = FALSE; /* default to false */
|
---|
| 1617 |
|
---|
| 1618 | /* Parse the URL path */
|
---|
| 1619 | result = imap_parse_url_path(conn);
|
---|
| 1620 | if(result)
|
---|
| 1621 | return result;
|
---|
| 1622 |
|
---|
| 1623 | /* Parse the custom request */
|
---|
| 1624 | result = imap_parse_custom_request(conn);
|
---|
| 1625 | if(result)
|
---|
| 1626 | return result;
|
---|
| 1627 |
|
---|
| 1628 | result = imap_regular_transfer(conn, done);
|
---|
| 1629 |
|
---|
| 1630 | return result;
|
---|
| 1631 | }
|
---|
| 1632 |
|
---|
| 1633 | /***********************************************************************
|
---|
| 1634 | *
|
---|
| 1635 | * imap_disconnect()
|
---|
| 1636 | *
|
---|
| 1637 | * Disconnect from an IMAP server. Cleanup protocol-specific per-connection
|
---|
| 1638 | * resources. BLOCKING.
|
---|
| 1639 | */
|
---|
| 1640 | static CURLcode imap_disconnect(struct connectdata *conn, bool dead_connection)
|
---|
| 1641 | {
|
---|
| 1642 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1643 |
|
---|
| 1644 | /* We cannot send quit unconditionally. If this connection is stale or
|
---|
| 1645 | bad in any way, sending quit and waiting around here will make the
|
---|
| 1646 | disconnect wait in vain and cause more problems than we need to. */
|
---|
| 1647 |
|
---|
| 1648 | /* The IMAP session may or may not have been allocated/setup at this
|
---|
| 1649 | point! */
|
---|
| 1650 | if(!dead_connection && imapc->pp.conn && imapc->pp.conn->bits.protoconnstart)
|
---|
| 1651 | if(!imap_perform_logout(conn))
|
---|
| 1652 | (void)imap_block_statemach(conn); /* ignore errors on LOGOUT */
|
---|
| 1653 |
|
---|
| 1654 | /* Disconnect from the server */
|
---|
| 1655 | Curl_pp_disconnect(&imapc->pp);
|
---|
| 1656 |
|
---|
| 1657 | /* Cleanup the SASL module */
|
---|
| 1658 | Curl_sasl_cleanup(conn, imapc->sasl.authused);
|
---|
| 1659 |
|
---|
| 1660 | /* Cleanup our connection based variables */
|
---|
| 1661 | Curl_safefree(imapc->mailbox);
|
---|
| 1662 | Curl_safefree(imapc->mailbox_uidvalidity);
|
---|
| 1663 |
|
---|
| 1664 | return CURLE_OK;
|
---|
| 1665 | }
|
---|
| 1666 |
|
---|
| 1667 | /* Call this when the DO phase has completed */
|
---|
| 1668 | static CURLcode imap_dophase_done(struct connectdata *conn, bool connected)
|
---|
| 1669 | {
|
---|
| 1670 | struct IMAP *imap = conn->data->req.protop;
|
---|
| 1671 |
|
---|
| 1672 | (void)connected;
|
---|
| 1673 |
|
---|
| 1674 | if(imap->transfer != FTPTRANSFER_BODY)
|
---|
| 1675 | /* no data to transfer */
|
---|
| 1676 | Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
|
---|
| 1677 |
|
---|
| 1678 | return CURLE_OK;
|
---|
| 1679 | }
|
---|
| 1680 |
|
---|
| 1681 | /* Called from multi.c while DOing */
|
---|
| 1682 | static CURLcode imap_doing(struct connectdata *conn, bool *dophase_done)
|
---|
| 1683 | {
|
---|
| 1684 | CURLcode result = imap_multi_statemach(conn, dophase_done);
|
---|
| 1685 |
|
---|
| 1686 | if(result)
|
---|
| 1687 | DEBUGF(infof(conn->data, "DO phase failed\n"));
|
---|
| 1688 | else if(*dophase_done) {
|
---|
| 1689 | result = imap_dophase_done(conn, FALSE /* not connected */);
|
---|
| 1690 |
|
---|
| 1691 | DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
---|
| 1692 | }
|
---|
| 1693 |
|
---|
| 1694 | return result;
|
---|
| 1695 | }
|
---|
| 1696 |
|
---|
| 1697 | /***********************************************************************
|
---|
| 1698 | *
|
---|
| 1699 | * imap_regular_transfer()
|
---|
| 1700 | *
|
---|
| 1701 | * The input argument is already checked for validity.
|
---|
| 1702 | *
|
---|
| 1703 | * Performs all commands done before a regular transfer between a local and a
|
---|
| 1704 | * remote host.
|
---|
| 1705 | */
|
---|
| 1706 | static CURLcode imap_regular_transfer(struct connectdata *conn,
|
---|
| 1707 | bool *dophase_done)
|
---|
| 1708 | {
|
---|
| 1709 | CURLcode result = CURLE_OK;
|
---|
| 1710 | bool connected = FALSE;
|
---|
| 1711 | struct SessionHandle *data = conn->data;
|
---|
| 1712 |
|
---|
| 1713 | /* Make sure size is unknown at this point */
|
---|
| 1714 | data->req.size = -1;
|
---|
| 1715 |
|
---|
| 1716 | /* Set the progress data */
|
---|
| 1717 | Curl_pgrsSetUploadCounter(data, 0);
|
---|
| 1718 | Curl_pgrsSetDownloadCounter(data, 0);
|
---|
| 1719 | Curl_pgrsSetUploadSize(data, -1);
|
---|
| 1720 | Curl_pgrsSetDownloadSize(data, -1);
|
---|
| 1721 |
|
---|
| 1722 | /* Carry out the perform */
|
---|
| 1723 | result = imap_perform(conn, &connected, dophase_done);
|
---|
| 1724 |
|
---|
| 1725 | /* Perform post DO phase operations if necessary */
|
---|
| 1726 | if(!result && *dophase_done)
|
---|
| 1727 | result = imap_dophase_done(conn, connected);
|
---|
| 1728 |
|
---|
| 1729 | return result;
|
---|
| 1730 | }
|
---|
| 1731 |
|
---|
| 1732 | static CURLcode imap_setup_connection(struct connectdata *conn)
|
---|
| 1733 | {
|
---|
| 1734 | struct SessionHandle *data = conn->data;
|
---|
| 1735 |
|
---|
| 1736 | /* Initialise the IMAP layer */
|
---|
| 1737 | CURLcode result = imap_init(conn);
|
---|
| 1738 | if(result)
|
---|
| 1739 | return result;
|
---|
| 1740 |
|
---|
| 1741 | if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
|
---|
| 1742 | /* Unless we have asked to tunnel IMAP operations through the proxy, we
|
---|
| 1743 | switch and use HTTP operations only */
|
---|
| 1744 | #ifndef CURL_DISABLE_HTTP
|
---|
| 1745 | if(conn->handler == &Curl_handler_imap)
|
---|
| 1746 | conn->handler = &Curl_handler_imap_proxy;
|
---|
| 1747 | else {
|
---|
| 1748 | #ifdef USE_SSL
|
---|
| 1749 | conn->handler = &Curl_handler_imaps_proxy;
|
---|
| 1750 | #else
|
---|
| 1751 | failf(data, "IMAPS not supported!");
|
---|
| 1752 | return CURLE_UNSUPPORTED_PROTOCOL;
|
---|
| 1753 | #endif
|
---|
| 1754 | }
|
---|
| 1755 |
|
---|
| 1756 | /* set it up as an HTTP connection instead */
|
---|
| 1757 | return conn->handler->setup_connection(conn);
|
---|
| 1758 | #else
|
---|
| 1759 | failf(data, "IMAP over http proxy requires HTTP support built-in!");
|
---|
| 1760 | return CURLE_UNSUPPORTED_PROTOCOL;
|
---|
| 1761 | #endif
|
---|
| 1762 | }
|
---|
| 1763 |
|
---|
| 1764 | data->state.path++; /* don't include the initial slash */
|
---|
| 1765 |
|
---|
| 1766 | return CURLE_OK;
|
---|
| 1767 | }
|
---|
| 1768 |
|
---|
| 1769 | /***********************************************************************
|
---|
| 1770 | *
|
---|
| 1771 | * imap_sendf()
|
---|
| 1772 | *
|
---|
| 1773 | * Sends the formated string as an IMAP command to the server.
|
---|
| 1774 | *
|
---|
| 1775 | * Designed to never block.
|
---|
| 1776 | */
|
---|
| 1777 | static CURLcode imap_sendf(struct connectdata *conn, const char *fmt, ...)
|
---|
| 1778 | {
|
---|
| 1779 | CURLcode result = CURLE_OK;
|
---|
| 1780 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1781 | char *taggedfmt;
|
---|
| 1782 | va_list ap;
|
---|
| 1783 |
|
---|
| 1784 | DEBUGASSERT(fmt);
|
---|
| 1785 |
|
---|
| 1786 | /* Calculate the next command ID wrapping at 3 digits */
|
---|
| 1787 | imapc->cmdid = (imapc->cmdid + 1) % 1000;
|
---|
| 1788 |
|
---|
| 1789 | /* Calculate the tag based on the connection ID and command ID */
|
---|
| 1790 | snprintf(imapc->resptag, sizeof(imapc->resptag), "%c%03d",
|
---|
| 1791 | 'A' + curlx_sltosi(conn->connection_id % 26), imapc->cmdid);
|
---|
| 1792 |
|
---|
| 1793 | /* Prefix the format with the tag */
|
---|
| 1794 | taggedfmt = aprintf("%s %s", imapc->resptag, fmt);
|
---|
| 1795 | if(!taggedfmt)
|
---|
| 1796 | return CURLE_OUT_OF_MEMORY;
|
---|
| 1797 |
|
---|
| 1798 | /* Send the data with the tag */
|
---|
| 1799 | va_start(ap, fmt);
|
---|
| 1800 | result = Curl_pp_vsendf(&imapc->pp, taggedfmt, ap);
|
---|
| 1801 | va_end(ap);
|
---|
| 1802 |
|
---|
| 1803 | free(taggedfmt);
|
---|
| 1804 |
|
---|
| 1805 | return result;
|
---|
| 1806 | }
|
---|
| 1807 |
|
---|
| 1808 | /***********************************************************************
|
---|
| 1809 | *
|
---|
| 1810 | * imap_atom()
|
---|
| 1811 | *
|
---|
| 1812 | * Checks the input string for characters that need escaping and returns an
|
---|
| 1813 | * atom ready for sending to the server.
|
---|
| 1814 | *
|
---|
| 1815 | * The returned string needs to be freed.
|
---|
| 1816 | *
|
---|
| 1817 | */
|
---|
| 1818 | static char *imap_atom(const char *str, bool escape_only)
|
---|
| 1819 | {
|
---|
| 1820 | const char atom_specials[] = "(){ %*]";
|
---|
| 1821 | const char *p1;
|
---|
| 1822 | char *p2;
|
---|
| 1823 | size_t backsp_count = 0;
|
---|
| 1824 | size_t quote_count = 0;
|
---|
| 1825 | bool others_exists = FALSE;
|
---|
| 1826 | size_t newlen = 0;
|
---|
| 1827 | char *newstr = NULL;
|
---|
| 1828 |
|
---|
| 1829 | if(!str)
|
---|
| 1830 | return NULL;
|
---|
| 1831 |
|
---|
| 1832 | /* Look for "atom-specials", counting the backslash and quote characters as
|
---|
| 1833 | these will need escapping */
|
---|
| 1834 | p1 = str;
|
---|
| 1835 | while(*p1) {
|
---|
| 1836 | if(*p1 == '\\')
|
---|
| 1837 | backsp_count++;
|
---|
| 1838 | else if(*p1 == '"')
|
---|
| 1839 | quote_count++;
|
---|
| 1840 | else if(!escape_only) {
|
---|
| 1841 | const char *p3 = atom_specials;
|
---|
| 1842 |
|
---|
| 1843 | while(*p3 && !others_exists) {
|
---|
| 1844 | if(*p1 == *p3)
|
---|
| 1845 | others_exists = TRUE;
|
---|
| 1846 |
|
---|
| 1847 | p3++;
|
---|
| 1848 | }
|
---|
| 1849 | }
|
---|
| 1850 |
|
---|
| 1851 | p1++;
|
---|
| 1852 | }
|
---|
| 1853 |
|
---|
| 1854 | /* Does the input contain any "atom-special" characters? */
|
---|
| 1855 | if(!backsp_count && !quote_count && !others_exists)
|
---|
| 1856 | return strdup(str);
|
---|
| 1857 |
|
---|
| 1858 | /* Calculate the new string length */
|
---|
| 1859 | newlen = strlen(str) + backsp_count + quote_count + (others_exists ? 2 : 0);
|
---|
| 1860 |
|
---|
| 1861 | /* Allocate the new string */
|
---|
| 1862 | newstr = (char *) malloc((newlen + 1) * sizeof(char));
|
---|
| 1863 | if(!newstr)
|
---|
| 1864 | return NULL;
|
---|
| 1865 |
|
---|
| 1866 | /* Surround the string in quotes if necessary */
|
---|
| 1867 | p2 = newstr;
|
---|
| 1868 | if(others_exists) {
|
---|
| 1869 | newstr[0] = '"';
|
---|
| 1870 | newstr[newlen - 1] = '"';
|
---|
| 1871 | p2++;
|
---|
| 1872 | }
|
---|
| 1873 |
|
---|
| 1874 | /* Copy the string, escaping backslash and quote characters along the way */
|
---|
| 1875 | p1 = str;
|
---|
| 1876 | while(*p1) {
|
---|
| 1877 | if(*p1 == '\\' || *p1 == '"') {
|
---|
| 1878 | *p2 = '\\';
|
---|
| 1879 | p2++;
|
---|
| 1880 | }
|
---|
| 1881 |
|
---|
| 1882 | *p2 = *p1;
|
---|
| 1883 |
|
---|
| 1884 | p1++;
|
---|
| 1885 | p2++;
|
---|
| 1886 | }
|
---|
| 1887 |
|
---|
| 1888 | /* Terminate the string */
|
---|
| 1889 | newstr[newlen] = '\0';
|
---|
| 1890 |
|
---|
| 1891 | return newstr;
|
---|
| 1892 | }
|
---|
| 1893 |
|
---|
| 1894 | /***********************************************************************
|
---|
| 1895 | *
|
---|
| 1896 | * imap_is_bchar()
|
---|
| 1897 | *
|
---|
| 1898 | * Portable test of whether the specified char is a "bchar" as defined in the
|
---|
| 1899 | * grammar of RFC-5092.
|
---|
| 1900 | */
|
---|
| 1901 | static bool imap_is_bchar(char ch)
|
---|
| 1902 | {
|
---|
| 1903 | switch(ch) {
|
---|
| 1904 | /* bchar */
|
---|
| 1905 | case ':': case '@': case '/':
|
---|
| 1906 | /* bchar -> achar */
|
---|
| 1907 | case '&': case '=':
|
---|
| 1908 | /* bchar -> achar -> uchar -> unreserved */
|
---|
| 1909 | case '0': case '1': case '2': case '3': case '4': case '5': case '6':
|
---|
| 1910 | case '7': case '8': case '9':
|
---|
| 1911 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
|
---|
| 1912 | case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
|
---|
| 1913 | case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
|
---|
| 1914 | case 'V': case 'W': case 'X': case 'Y': case 'Z':
|
---|
| 1915 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
|
---|
| 1916 | case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
|
---|
| 1917 | case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
|
---|
| 1918 | case 'v': case 'w': case 'x': case 'y': case 'z':
|
---|
| 1919 | case '-': case '.': case '_': case '~':
|
---|
| 1920 | /* bchar -> achar -> uchar -> sub-delims-sh */
|
---|
| 1921 | case '!': case '$': case '\'': case '(': case ')': case '*':
|
---|
| 1922 | case '+': case ',':
|
---|
| 1923 | /* bchar -> achar -> uchar -> pct-encoded */
|
---|
| 1924 | case '%': /* HEXDIG chars are already included above */
|
---|
| 1925 | return true;
|
---|
| 1926 |
|
---|
| 1927 | default:
|
---|
| 1928 | return false;
|
---|
| 1929 | }
|
---|
| 1930 | }
|
---|
| 1931 |
|
---|
| 1932 | /***********************************************************************
|
---|
| 1933 | *
|
---|
| 1934 | * imap_parse_url_options()
|
---|
| 1935 | *
|
---|
| 1936 | * Parse the URL login options.
|
---|
| 1937 | */
|
---|
| 1938 | static CURLcode imap_parse_url_options(struct connectdata *conn)
|
---|
| 1939 | {
|
---|
| 1940 | CURLcode result = CURLE_OK;
|
---|
| 1941 | struct imap_conn *imapc = &conn->proto.imapc;
|
---|
| 1942 | const char *ptr = conn->options;
|
---|
| 1943 |
|
---|
| 1944 | imapc->sasl.resetprefs = TRUE;
|
---|
| 1945 |
|
---|
| 1946 | while(!result && ptr && *ptr) {
|
---|
| 1947 | const char *key = ptr;
|
---|
| 1948 | const char *value;
|
---|
| 1949 |
|
---|
| 1950 | while(*ptr && *ptr != '=')
|
---|
| 1951 | ptr++;
|
---|
| 1952 |
|
---|
| 1953 | value = ptr + 1;
|
---|
| 1954 |
|
---|
| 1955 | while(*ptr && *ptr != ';')
|
---|
| 1956 | ptr++;
|
---|
| 1957 |
|
---|
| 1958 | if(strnequal(key, "AUTH=", 5))
|
---|
| 1959 | result = Curl_sasl_parse_url_auth_option(&imapc->sasl,
|
---|
| 1960 | value, ptr - value);
|
---|
| 1961 | else
|
---|
| 1962 | result = CURLE_URL_MALFORMAT;
|
---|
| 1963 |
|
---|
| 1964 | if(*ptr == ';')
|
---|
| 1965 | ptr++;
|
---|
| 1966 | }
|
---|
| 1967 |
|
---|
| 1968 | switch(imapc->sasl.prefmech) {
|
---|
| 1969 | case SASL_AUTH_NONE:
|
---|
| 1970 | imapc->preftype = IMAP_TYPE_NONE;
|
---|
| 1971 | break;
|
---|
| 1972 | case SASL_AUTH_DEFAULT:
|
---|
| 1973 | imapc->preftype = IMAP_TYPE_ANY;
|
---|
| 1974 | break;
|
---|
| 1975 | default:
|
---|
| 1976 | imapc->preftype = IMAP_TYPE_SASL;
|
---|
| 1977 | break;
|
---|
| 1978 | }
|
---|
| 1979 |
|
---|
| 1980 | return result;
|
---|
| 1981 | }
|
---|
| 1982 |
|
---|
| 1983 | /***********************************************************************
|
---|
| 1984 | *
|
---|
| 1985 | * imap_parse_url_path()
|
---|
| 1986 | *
|
---|
| 1987 | * Parse the URL path into separate path components.
|
---|
| 1988 | *
|
---|
| 1989 | */
|
---|
| 1990 | static CURLcode imap_parse_url_path(struct connectdata *conn)
|
---|
| 1991 | {
|
---|
| 1992 | /* The imap struct is already initialised in imap_connect() */
|
---|
| 1993 | CURLcode result = CURLE_OK;
|
---|
| 1994 | struct SessionHandle *data = conn->data;
|
---|
| 1995 | struct IMAP *imap = data->req.protop;
|
---|
| 1996 | const char *begin = data->state.path;
|
---|
| 1997 | const char *ptr = begin;
|
---|
| 1998 |
|
---|
| 1999 | /* See how much of the URL is a valid path and decode it */
|
---|
| 2000 | while(imap_is_bchar(*ptr))
|
---|
| 2001 | ptr++;
|
---|
| 2002 |
|
---|
| 2003 | if(ptr != begin) {
|
---|
| 2004 | /* Remove the trailing slash if present */
|
---|
| 2005 | const char *end = ptr;
|
---|
| 2006 | if(end > begin && end[-1] == '/')
|
---|
| 2007 | end--;
|
---|
| 2008 |
|
---|
| 2009 | result = Curl_urldecode(data, begin, end - begin, &imap->mailbox, NULL,
|
---|
| 2010 | TRUE);
|
---|
| 2011 | if(result)
|
---|
| 2012 | return result;
|
---|
| 2013 | }
|
---|
| 2014 | else
|
---|
| 2015 | imap->mailbox = NULL;
|
---|
| 2016 |
|
---|
| 2017 | /* There can be any number of parameters in the form ";NAME=VALUE" */
|
---|
| 2018 | while(*ptr == ';') {
|
---|
| 2019 | char *name;
|
---|
| 2020 | char *value;
|
---|
| 2021 | size_t valuelen;
|
---|
| 2022 |
|
---|
| 2023 | /* Find the length of the name parameter */
|
---|
| 2024 | begin = ++ptr;
|
---|
| 2025 | while(*ptr && *ptr != '=')
|
---|
| 2026 | ptr++;
|
---|
| 2027 |
|
---|
| 2028 | if(!*ptr)
|
---|
| 2029 | return CURLE_URL_MALFORMAT;
|
---|
| 2030 |
|
---|
| 2031 | /* Decode the name parameter */
|
---|
| 2032 | result = Curl_urldecode(data, begin, ptr - begin, &name, NULL, TRUE);
|
---|
| 2033 | if(result)
|
---|
| 2034 | return result;
|
---|
| 2035 |
|
---|
| 2036 | /* Find the length of the value parameter */
|
---|
| 2037 | begin = ++ptr;
|
---|
| 2038 | while(imap_is_bchar(*ptr))
|
---|
| 2039 | ptr++;
|
---|
| 2040 |
|
---|
| 2041 | /* Decode the value parameter */
|
---|
| 2042 | result = Curl_urldecode(data, begin, ptr - begin, &value, &valuelen, TRUE);
|
---|
| 2043 | if(result) {
|
---|
| 2044 | free(name);
|
---|
| 2045 | return result;
|
---|
| 2046 | }
|
---|
| 2047 |
|
---|
| 2048 | DEBUGF(infof(conn->data, "IMAP URL parameter '%s' = '%s'\n", name, value));
|
---|
| 2049 |
|
---|
| 2050 | /* Process the known hierarchical parameters (UIDVALIDITY, UID, SECTION and
|
---|
| 2051 | PARTIAL) stripping of the trailing slash character if it is present.
|
---|
| 2052 |
|
---|
| 2053 | Note: Unknown parameters trigger a URL_MALFORMAT error. */
|
---|
| 2054 | if(Curl_raw_equal(name, "UIDVALIDITY") && !imap->uidvalidity) {
|
---|
| 2055 | if(valuelen > 0 && value[valuelen - 1] == '/')
|
---|
| 2056 | value[valuelen - 1] = '\0';
|
---|
| 2057 |
|
---|
| 2058 | imap->uidvalidity = value;
|
---|
| 2059 | value = NULL;
|
---|
| 2060 | }
|
---|
| 2061 | else if(Curl_raw_equal(name, "UID") && !imap->uid) {
|
---|
| 2062 | if(valuelen > 0 && value[valuelen - 1] == '/')
|
---|
| 2063 | value[valuelen - 1] = '\0';
|
---|
| 2064 |
|
---|
| 2065 | imap->uid = value;
|
---|
| 2066 | value = NULL;
|
---|
| 2067 | }
|
---|
| 2068 | else if(Curl_raw_equal(name, "SECTION") && !imap->section) {
|
---|
| 2069 | if(valuelen > 0 && value[valuelen - 1] == '/')
|
---|
| 2070 | value[valuelen - 1] = '\0';
|
---|
| 2071 |
|
---|
| 2072 | imap->section = value;
|
---|
| 2073 | value = NULL;
|
---|
| 2074 | }
|
---|
| 2075 | else if(Curl_raw_equal(name, "PARTIAL") && !imap->partial) {
|
---|
| 2076 | if(valuelen > 0 && value[valuelen - 1] == '/')
|
---|
| 2077 | value[valuelen - 1] = '\0';
|
---|
| 2078 |
|
---|
| 2079 | imap->partial = value;
|
---|
| 2080 | value = NULL;
|
---|
| 2081 | }
|
---|
| 2082 | else {
|
---|
| 2083 | free(name);
|
---|
| 2084 | free(value);
|
---|
| 2085 |
|
---|
| 2086 | return CURLE_URL_MALFORMAT;
|
---|
| 2087 | }
|
---|
| 2088 |
|
---|
| 2089 | free(name);
|
---|
| 2090 | free(value);
|
---|
| 2091 | }
|
---|
| 2092 |
|
---|
| 2093 | /* Does the URL contain a query parameter? Only valid when we have a mailbox
|
---|
| 2094 | and no UID as per RFC-5092 */
|
---|
| 2095 | if(imap->mailbox && !imap->uid && *ptr == '?') {
|
---|
| 2096 | /* Find the length of the query parameter */
|
---|
| 2097 | begin = ++ptr;
|
---|
| 2098 | while(imap_is_bchar(*ptr))
|
---|
| 2099 | ptr++;
|
---|
| 2100 |
|
---|
| 2101 | /* Decode the query parameter */
|
---|
| 2102 | result = Curl_urldecode(data, begin, ptr - begin, &imap->query, NULL,
|
---|
| 2103 | TRUE);
|
---|
| 2104 | if(result)
|
---|
| 2105 | return result;
|
---|
| 2106 | }
|
---|
| 2107 |
|
---|
| 2108 | /* Any extra stuff at the end of the URL is an error */
|
---|
| 2109 | if(*ptr)
|
---|
| 2110 | return CURLE_URL_MALFORMAT;
|
---|
| 2111 |
|
---|
| 2112 | return CURLE_OK;
|
---|
| 2113 | }
|
---|
| 2114 |
|
---|
| 2115 | /***********************************************************************
|
---|
| 2116 | *
|
---|
| 2117 | * imap_parse_custom_request()
|
---|
| 2118 | *
|
---|
| 2119 | * Parse the custom request.
|
---|
| 2120 | */
|
---|
| 2121 | static CURLcode imap_parse_custom_request(struct connectdata *conn)
|
---|
| 2122 | {
|
---|
| 2123 | CURLcode result = CURLE_OK;
|
---|
| 2124 | struct SessionHandle *data = conn->data;
|
---|
| 2125 | struct IMAP *imap = data->req.protop;
|
---|
| 2126 | const char *custom = data->set.str[STRING_CUSTOMREQUEST];
|
---|
| 2127 |
|
---|
| 2128 | if(custom) {
|
---|
| 2129 | /* URL decode the custom request */
|
---|
| 2130 | result = Curl_urldecode(data, custom, 0, &imap->custom, NULL, TRUE);
|
---|
| 2131 |
|
---|
| 2132 | /* Extract the parameters if specified */
|
---|
| 2133 | if(!result) {
|
---|
| 2134 | const char *params = imap->custom;
|
---|
| 2135 |
|
---|
| 2136 | while(*params && *params != ' ')
|
---|
| 2137 | params++;
|
---|
| 2138 |
|
---|
| 2139 | if(*params) {
|
---|
| 2140 | imap->custom_params = strdup(params);
|
---|
| 2141 | imap->custom[params - imap->custom] = '\0';
|
---|
| 2142 |
|
---|
| 2143 | if(!imap->custom_params)
|
---|
| 2144 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 2145 | }
|
---|
| 2146 | }
|
---|
| 2147 | }
|
---|
| 2148 |
|
---|
| 2149 | return result;
|
---|
| 2150 | }
|
---|
| 2151 |
|
---|
| 2152 | #endif /* CURL_DISABLE_IMAP */
|
---|