mirror of
https://github.com/moparisthebest/curl
synced 2024-10-31 15:45:12 -04:00
5c14a7f068
Don't wait for the next callback call (usually 1 second) before continuing with protocol specific connection initialization.
2447 lines
68 KiB
C
2447 lines
68 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* RFC2195 CRAM-MD5 authentication
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* RFC2595 Using TLS with IMAP, POP3 and ACAP
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* RFC2831 DIGEST-MD5 authentication
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* RFC3501 IMAPv4 protocol
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* RFC4422 Simple Authentication and Security Layer (SASL)
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* RFC4616 PLAIN authentication
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* RFC4959 IMAP Extension for SASL Initial Client Response
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* RFC5092 IMAP URL Scheme
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* RFC6749 OAuth 2.0 Authorization Framework
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*
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***************************************************************************/
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#include "curl_setup.h"
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#ifndef CURL_DISABLE_IMAP
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_UTSNAME_H
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#include <sys/utsname.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef __VMS
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#include <in.h>
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#include <inet.h>
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#endif
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#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
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#undef in_addr_t
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#define in_addr_t unsigned long
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#endif
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#include <curl/curl.h>
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#include "urldata.h"
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#include "sendf.h"
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#include "if2ip.h"
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#include "hostip.h"
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#include "progress.h"
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#include "transfer.h"
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#include "escape.h"
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#include "http.h" /* for HTTP proxy tunnel stuff */
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#include "socks.h"
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#include "imap.h"
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#include "strtoofft.h"
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#include "strequal.h"
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#include "sslgen.h"
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#include "connect.h"
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#include "strerror.h"
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#include "select.h"
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#include "multiif.h"
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#include "url.h"
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#include "rawstr.h"
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#include "curl_sasl.h"
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#include "warnless.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/* Local API functions */
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static CURLcode imap_regular_transfer(struct connectdata *conn, bool *done);
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static CURLcode imap_do(struct connectdata *conn, bool *done);
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static CURLcode imap_done(struct connectdata *conn, CURLcode status,
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bool premature);
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static CURLcode imap_connect(struct connectdata *conn, bool *done);
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static CURLcode imap_disconnect(struct connectdata *conn, bool dead);
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static CURLcode imap_multi_statemach(struct connectdata *conn, bool *done);
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static int imap_getsock(struct connectdata *conn, curl_socket_t *socks,
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int numsocks);
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static CURLcode imap_doing(struct connectdata *conn, bool *dophase_done);
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static CURLcode imap_setup_connection(struct connectdata *conn);
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static char *imap_atom(const char *str);
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static CURLcode imap_sendf(struct connectdata *conn, const char *fmt, ...);
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static CURLcode imap_parse_url_options(struct connectdata *conn);
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static CURLcode imap_parse_url_path(struct connectdata *conn);
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static CURLcode imap_parse_custom_request(struct connectdata *conn);
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/*
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* IMAP protocol handler.
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*/
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const struct Curl_handler Curl_handler_imap = {
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"IMAP", /* scheme */
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imap_setup_connection, /* setup_connection */
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imap_do, /* do_it */
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imap_done, /* done */
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ZERO_NULL, /* do_more */
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imap_connect, /* connect_it */
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imap_multi_statemach, /* connecting */
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imap_doing, /* doing */
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imap_getsock, /* proto_getsock */
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imap_getsock, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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imap_disconnect, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_IMAP, /* defport */
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CURLPROTO_IMAP, /* protocol */
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PROTOPT_CLOSEACTION | PROTOPT_NEEDSPWD
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| PROTOPT_NOURLQUERY /* flags */
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};
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#ifdef USE_SSL
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/*
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* IMAPS protocol handler.
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*/
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const struct Curl_handler Curl_handler_imaps = {
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"IMAPS", /* scheme */
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imap_setup_connection, /* setup_connection */
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imap_do, /* do_it */
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imap_done, /* done */
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ZERO_NULL, /* do_more */
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imap_connect, /* connect_it */
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imap_multi_statemach, /* connecting */
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imap_doing, /* doing */
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imap_getsock, /* proto_getsock */
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imap_getsock, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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imap_disconnect, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_IMAPS, /* defport */
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CURLPROTO_IMAP | CURLPROTO_IMAPS, /* protocol */
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PROTOPT_CLOSEACTION | PROTOPT_SSL | PROTOPT_NEEDSPWD
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| PROTOPT_NOURLQUERY /* flags */
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};
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#endif
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#ifndef CURL_DISABLE_HTTP
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/*
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* HTTP-proxyed IMAP protocol handler.
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*/
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static const struct Curl_handler Curl_handler_imap_proxy = {
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"IMAP", /* scheme */
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Curl_http_setup_conn, /* setup_connection */
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Curl_http, /* do_it */
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Curl_http_done, /* done */
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ZERO_NULL, /* do_more */
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ZERO_NULL, /* connect_it */
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ZERO_NULL, /* connecting */
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ZERO_NULL, /* doing */
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ZERO_NULL, /* proto_getsock */
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ZERO_NULL, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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ZERO_NULL, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_IMAP, /* defport */
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CURLPROTO_HTTP, /* protocol */
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PROTOPT_NONE /* flags */
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};
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#ifdef USE_SSL
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/*
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* HTTP-proxyed IMAPS protocol handler.
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*/
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static const struct Curl_handler Curl_handler_imaps_proxy = {
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"IMAPS", /* scheme */
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Curl_http_setup_conn, /* setup_connection */
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Curl_http, /* do_it */
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Curl_http_done, /* done */
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ZERO_NULL, /* do_more */
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ZERO_NULL, /* connect_it */
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ZERO_NULL, /* connecting */
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ZERO_NULL, /* doing */
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ZERO_NULL, /* proto_getsock */
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ZERO_NULL, /* doing_getsock */
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ZERO_NULL, /* domore_getsock */
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ZERO_NULL, /* perform_getsock */
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ZERO_NULL, /* disconnect */
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ZERO_NULL, /* readwrite */
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PORT_IMAPS, /* defport */
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CURLPROTO_HTTP, /* protocol */
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PROTOPT_NONE /* flags */
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};
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#endif
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#endif
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#ifdef USE_SSL
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static void imap_to_imaps(struct connectdata *conn)
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{
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conn->handler = &Curl_handler_imaps;
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}
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#else
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#define imap_to_imaps(x) Curl_nop_stmt
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#endif
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/***********************************************************************
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*
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* imap_matchresp()
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*
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* Determines whether the untagged response is related to the specified
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* command by checking if it is in format "* <command-name> ..." or
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* "* <number> <command-name> ...".
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*
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* The "* " marker is assumed to have already been checked by the caller.
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*/
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static bool imap_matchresp(const char *line, size_t len, const char *cmd)
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{
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const char *end = line + len;
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size_t cmd_len = strlen(cmd);
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/* Skip the untagged response marker */
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line += 2;
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/* Do we have a number after the marker? */
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if(line < end && ISDIGIT(*line)) {
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/* Skip the number */
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do
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line++;
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while(line < end && ISDIGIT(*line));
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/* Do we have the space character? */
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if(line == end || *line != ' ')
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return FALSE;
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line++;
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}
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/* Does the command name match and is it followed by a space character or at
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the end of line? */
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if(line + cmd_len <= end && Curl_raw_nequal(line, cmd, cmd_len) &&
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(line[cmd_len] == ' ' || line + cmd_len == end))
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return TRUE;
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return FALSE;
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}
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/***********************************************************************
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*
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* imap_endofresp()
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*
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* Checks whether the given string is a valid tagged, untagged or continuation
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* response which can be processed by the response handler.
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*/
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static bool imap_endofresp(struct connectdata *conn, char *line, size_t len,
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int *resp)
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{
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struct IMAP *imap = conn->data->req.protop;
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struct imap_conn *imapc = &conn->proto.imapc;
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const char *id = imapc->resptag;
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size_t id_len = strlen(id);
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/* Do we have a tagged command response? */
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if(len >= id_len + 1 && !memcmp(id, line, id_len) && line[id_len] == ' ') {
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line += id_len + 1;
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len -= id_len + 1;
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if(len >= 2 && !memcmp(line, "OK", 2))
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*resp = 'O';
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else if(len >= 2 && !memcmp(line, "NO", 2))
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*resp = 'N';
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else if(len >= 3 && !memcmp(line, "BAD", 3))
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*resp = 'B';
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else {
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failf(conn->data, "Bad tagged response");
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*resp = -1;
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}
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return TRUE;
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}
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/* Do we have an untagged command response? */
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if(len >= 2 && !memcmp("* ", line, 2)) {
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switch(imapc->state) {
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/* States which are interested in untagged responses */
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case IMAP_CAPABILITY:
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if(!imap_matchresp(line, len, "CAPABILITY"))
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return FALSE;
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break;
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case IMAP_LIST:
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if((!imap->custom && !imap_matchresp(line, len, "LIST")) ||
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(imap->custom && !imap_matchresp(line, len, imap->custom) &&
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(strcmp(imap->custom, "STORE") ||
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!imap_matchresp(line, len, "FETCH")) &&
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strcmp(imap->custom, "SELECT") &&
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strcmp(imap->custom, "EXAMINE") &&
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strcmp(imap->custom, "SEARCH") &&
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strcmp(imap->custom, "EXPUNGE")))
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return FALSE;
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break;
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case IMAP_SELECT:
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/* SELECT is special in that its untagged responses do not have a
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common prefix so accept anything! */
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break;
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case IMAP_FETCH:
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if(!imap_matchresp(line, len, "FETCH"))
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return FALSE;
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break;
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/* Ignore other untagged responses */
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default:
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return FALSE;
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}
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*resp = '*';
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return TRUE;
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}
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/* Do we have a continuation response? */
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if((len == 3 && !memcmp("+", line, 1)) ||
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(len >= 2 && !memcmp("+ ", line, 2))) {
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switch(imapc->state) {
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/* States which are interested in continuation responses */
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case IMAP_AUTHENTICATE_PLAIN:
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case IMAP_AUTHENTICATE_LOGIN:
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case IMAP_AUTHENTICATE_LOGIN_PASSWD:
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case IMAP_AUTHENTICATE_CRAMMD5:
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case IMAP_AUTHENTICATE_DIGESTMD5:
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case IMAP_AUTHENTICATE_DIGESTMD5_RESP:
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case IMAP_AUTHENTICATE_NTLM:
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case IMAP_AUTHENTICATE_NTLM_TYPE2MSG:
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case IMAP_AUTHENTICATE_XOAUTH2:
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case IMAP_AUTHENTICATE_FINAL:
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case IMAP_APPEND:
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*resp = '+';
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break;
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default:
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failf(conn->data, "Unexpected continuation response");
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*resp = -1;
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break;
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}
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return TRUE;
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}
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return FALSE; /* Nothing for us */
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}
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/***********************************************************************
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*
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* state()
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*
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* This is the ONLY way to change IMAP state!
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*/
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static void state(struct connectdata *conn, imapstate newstate)
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{
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struct imap_conn *imapc = &conn->proto.imapc;
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#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
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/* for debug purposes */
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static const char * const names[]={
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"STOP",
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"SERVERGREET",
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"CAPABILITY",
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"STARTTLS",
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"UPGRADETLS",
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"AUTHENTICATE_PLAIN",
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"AUTHENTICATE_LOGIN",
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"AUTHENTICATE_LOGIN_PASSWD",
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"AUTHENTICATE_CRAMMD5",
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"AUTHENTICATE_DIGESTMD5",
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"AUTHENTICATE_DIGESTMD5_RESP",
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"AUTHENTICATE_NTLM",
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"AUTHENTICATE_NTLM_TYPE2MSG",
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"AUTHENTICATE_XOAUTH2",
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"AUTHENTICATE_FINAL",
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"LOGIN",
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"LIST",
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"SELECT",
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"FETCH",
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"FETCH_FINAL",
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"APPEND",
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"APPEND_FINAL",
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"LOGOUT",
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/* LAST */
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};
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if(imapc->state != newstate)
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infof(conn->data, "IMAP %p state change from %s to %s\n",
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(void *)imapc, names[imapc->state], names[newstate]);
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#endif
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imapc->state = newstate;
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}
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/***********************************************************************
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*
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* imap_perform_capability()
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*
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* Sends the CAPABILITY command in order to obtain a list of server side
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* supported capabilities.
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*/
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static CURLcode imap_perform_capability(struct connectdata *conn)
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{
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CURLcode result = CURLE_OK;
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struct imap_conn *imapc = &conn->proto.imapc;
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imapc->authmechs = 0; /* No known authentication mechanisms yet */
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imapc->authused = 0; /* Clear the authentication mechanism used */
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imapc->tls_supported = FALSE; /* Clear the TLS capability */
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/* Send the CAPABILITY command */
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result = imap_sendf(conn, "CAPABILITY");
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if(!result)
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state(conn, IMAP_CAPABILITY);
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return result;
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}
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/***********************************************************************
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*
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* imap_perform_starttls()
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*
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* Sends the STARTTLS command to start the upgrade to TLS.
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*/
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static CURLcode imap_perform_starttls(struct connectdata *conn)
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{
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CURLcode result = CURLE_OK;
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/* Send the STARTTLS command */
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result = imap_sendf(conn, "STARTTLS");
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if(!result)
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state(conn, IMAP_STARTTLS);
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return result;
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}
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|
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/***********************************************************************
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*
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* imap_perform_upgrade_tls()
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*
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* Performs the upgrade to TLS.
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*/
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static CURLcode imap_perform_upgrade_tls(struct connectdata *conn)
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{
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CURLcode result = CURLE_OK;
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struct imap_conn *imapc = &conn->proto.imapc;
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/* Start the SSL connection */
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result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &imapc->ssldone);
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if(!result) {
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if(imapc->state != IMAP_UPGRADETLS)
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state(conn, IMAP_UPGRADETLS);
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if(imapc->ssldone) {
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imap_to_imaps(conn);
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result = imap_perform_capability(conn);
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}
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}
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return result;
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}
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|
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/***********************************************************************
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*
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* imap_perform_login()
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*
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* Sends a clear text LOGIN command to authenticate with.
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*/
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static CURLcode imap_perform_login(struct connectdata *conn)
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{
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CURLcode result = CURLE_OK;
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char *user;
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char *passwd;
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/* Check we have a username and password to authenticate with and end the
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connect phase if we don't */
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if(!conn->bits.user_passwd) {
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state(conn, IMAP_STOP);
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return result;
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}
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/* Make sure the username and password are in the correct atom format */
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user = imap_atom(conn->user);
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passwd = imap_atom(conn->passwd);
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/* Send the LOGIN command */
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result = imap_sendf(conn, "LOGIN %s %s", user ? user : "",
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passwd ? passwd : "");
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Curl_safefree(user);
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Curl_safefree(passwd);
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if(!result)
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state(conn, IMAP_LOGIN);
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return result;
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}
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|
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/***********************************************************************
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*
|
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* imap_perform_authenticate()
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*
|
|
* Sends an AUTHENTICATE command allowing the client to login with the
|
|
* appropriate SASL authentication mechanism.
|
|
*
|
|
* Additionally, the function will perform fallback to the LOGIN command
|
|
* should a common mechanism not be available between the client and server.
|
|
*/
|
|
static CURLcode imap_perform_authenticate(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
const char *mech = NULL;
|
|
char *initresp = NULL;
|
|
size_t len = 0;
|
|
imapstate state1 = IMAP_STOP;
|
|
imapstate state2 = IMAP_STOP;
|
|
|
|
/* Check we have a username and password to authenticate with and end the
|
|
connect phase if we don't */
|
|
if(!conn->bits.user_passwd) {
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Calculate the supported authentication mechanism by decreasing order of
|
|
security */
|
|
#ifndef CURL_DISABLE_CRYPTO_AUTH
|
|
if((imapc->authmechs & SASL_MECH_DIGEST_MD5) &&
|
|
(imapc->prefmech & SASL_MECH_DIGEST_MD5)) {
|
|
mech = "DIGEST-MD5";
|
|
state1 = IMAP_AUTHENTICATE_DIGESTMD5;
|
|
imapc->authused = SASL_MECH_DIGEST_MD5;
|
|
}
|
|
else if((imapc->authmechs & SASL_MECH_CRAM_MD5) &&
|
|
(imapc->prefmech & SASL_MECH_CRAM_MD5)) {
|
|
mech = "CRAM-MD5";
|
|
state1 = IMAP_AUTHENTICATE_CRAMMD5;
|
|
imapc->authused = SASL_MECH_CRAM_MD5;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef USE_NTLM
|
|
if((imapc->authmechs & SASL_MECH_NTLM) &&
|
|
(imapc->prefmech & SASL_MECH_NTLM)) {
|
|
mech = "NTLM";
|
|
state1 = IMAP_AUTHENTICATE_NTLM;
|
|
state2 = IMAP_AUTHENTICATE_NTLM_TYPE2MSG;
|
|
imapc->authused = SASL_MECH_NTLM;
|
|
|
|
if(imapc->ir_supported || data->set.sasl_ir)
|
|
result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
|
|
&conn->ntlm,
|
|
&initresp, &len);
|
|
}
|
|
else
|
|
#endif
|
|
if(((imapc->authmechs & SASL_MECH_XOAUTH2) &&
|
|
(imapc->prefmech & SASL_MECH_XOAUTH2) &&
|
|
(imapc->prefmech != SASL_AUTH_ANY)) || conn->xoauth2_bearer) {
|
|
mech = "XOAUTH2";
|
|
state1 = IMAP_AUTHENTICATE_XOAUTH2;
|
|
state2 = IMAP_AUTHENTICATE_FINAL;
|
|
imapc->authused = SASL_MECH_XOAUTH2;
|
|
|
|
if(imapc->ir_supported || data->set.sasl_ir)
|
|
result = Curl_sasl_create_xoauth2_message(conn->data, conn->user,
|
|
conn->xoauth2_bearer,
|
|
&initresp, &len);
|
|
}
|
|
else if((imapc->authmechs & SASL_MECH_LOGIN) &&
|
|
(imapc->prefmech & SASL_MECH_LOGIN)) {
|
|
mech = "LOGIN";
|
|
state1 = IMAP_AUTHENTICATE_LOGIN;
|
|
state2 = IMAP_AUTHENTICATE_LOGIN_PASSWD;
|
|
imapc->authused = SASL_MECH_LOGIN;
|
|
|
|
if(imapc->ir_supported || data->set.sasl_ir)
|
|
result = Curl_sasl_create_login_message(conn->data, conn->user,
|
|
&initresp, &len);
|
|
}
|
|
else if((imapc->authmechs & SASL_MECH_PLAIN) &&
|
|
(imapc->prefmech & SASL_MECH_PLAIN)) {
|
|
mech = "PLAIN";
|
|
state1 = IMAP_AUTHENTICATE_PLAIN;
|
|
state2 = IMAP_AUTHENTICATE_FINAL;
|
|
imapc->authused = SASL_MECH_PLAIN;
|
|
|
|
if(imapc->ir_supported || data->set.sasl_ir)
|
|
result = Curl_sasl_create_plain_message(conn->data, conn->user,
|
|
conn->passwd, &initresp, &len);
|
|
}
|
|
|
|
if(!result) {
|
|
if(mech) {
|
|
/* Perform SASL based authentication */
|
|
if(initresp) {
|
|
result = imap_sendf(conn, "AUTHENTICATE %s %s", mech, initresp);
|
|
|
|
if(!result)
|
|
state(conn, state2);
|
|
}
|
|
else {
|
|
result = imap_sendf(conn, "AUTHENTICATE %s", mech);
|
|
|
|
if(!result)
|
|
state(conn, state1);
|
|
}
|
|
|
|
Curl_safefree(initresp);
|
|
}
|
|
else if(!imapc->login_disabled)
|
|
/* Perform clear text authentication */
|
|
result = imap_perform_login(conn);
|
|
else {
|
|
/* Other mechanisms not supported */
|
|
infof(conn->data, "No known authentication mechanisms supported!\n");
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_list()
|
|
*
|
|
* Sends a LIST command or an alternative custom request.
|
|
*/
|
|
static CURLcode imap_perform_list(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = data->req.protop;
|
|
char *mailbox;
|
|
|
|
if(imap->custom)
|
|
/* Send the custom request */
|
|
result = imap_sendf(conn, "%s%s", imap->custom,
|
|
imap->custom_params ? imap->custom_params : "");
|
|
else {
|
|
/* Make sure the mailbox is in the correct atom format */
|
|
mailbox = imap_atom(imap->mailbox ? imap->mailbox : "");
|
|
if(!mailbox)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the LIST command */
|
|
result = imap_sendf(conn, "LIST \"%s\" *", mailbox);
|
|
|
|
Curl_safefree(mailbox);
|
|
}
|
|
|
|
if(!result)
|
|
state(conn, IMAP_LIST);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_select()
|
|
*
|
|
* Sends a SELECT command to ask the server to change the selected mailbox.
|
|
*/
|
|
static CURLcode imap_perform_select(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = data->req.protop;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
char *mailbox;
|
|
|
|
/* Invalidate old information as we are switching mailboxes */
|
|
Curl_safefree(imapc->mailbox);
|
|
Curl_safefree(imapc->mailbox_uidvalidity);
|
|
|
|
/* Check we have a mailbox */
|
|
if(!imap->mailbox) {
|
|
failf(conn->data, "Cannot SELECT without a mailbox.");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
/* Make sure the mailbox is in the correct atom format */
|
|
mailbox = imap_atom(imap->mailbox);
|
|
if(!mailbox)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the SELECT command */
|
|
result = imap_sendf(conn, "SELECT %s", mailbox);
|
|
|
|
Curl_safefree(mailbox);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_SELECT);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_fetch()
|
|
*
|
|
* Sends a FETCH command to initiate the download of a message.
|
|
*/
|
|
static CURLcode imap_perform_fetch(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = conn->data->req.protop;
|
|
|
|
/* Check we have a UID */
|
|
if(!imap->uid) {
|
|
failf(conn->data, "Cannot FETCH without a UID.");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
/* Send the FETCH command */
|
|
result = imap_sendf(conn, "FETCH %s BODY[%s]",
|
|
imap->uid,
|
|
imap->section ? imap->section : "");
|
|
|
|
if(!result)
|
|
state(conn, IMAP_FETCH);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_append()
|
|
*
|
|
* Sends an APPEND command to initiate the upload of a message.
|
|
*/
|
|
static CURLcode imap_perform_append(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = conn->data->req.protop;
|
|
char *mailbox;
|
|
|
|
/* Check we have a mailbox */
|
|
if(!imap->mailbox) {
|
|
failf(conn->data, "Cannot APPEND without a mailbox.");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
/* Check we know the size of the upload */
|
|
if(conn->data->set.infilesize < 0) {
|
|
failf(conn->data, "Cannot APPEND with unknown input file size\n");
|
|
return CURLE_UPLOAD_FAILED;
|
|
}
|
|
|
|
/* Make sure the mailbox is in the correct atom format */
|
|
mailbox = imap_atom(imap->mailbox);
|
|
if(!mailbox)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the APPEND command */
|
|
result = imap_sendf(conn, "APPEND %s (\\Seen) {%" FORMAT_OFF_T "}",
|
|
mailbox, conn->data->set.infilesize);
|
|
|
|
Curl_safefree(mailbox);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_APPEND);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_logout()
|
|
*
|
|
* Performs the logout action prior to sclose() being called.
|
|
*/
|
|
static CURLcode imap_perform_logout(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
|
|
/* Send the LOGOUT command */
|
|
result = imap_sendf(conn, "LOGOUT");
|
|
|
|
if(!result)
|
|
state(conn, IMAP_LOGOUT);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For the initial server greeting */
|
|
static CURLcode imap_state_servergreet_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != 'O') {
|
|
failf(data, "Got unexpected imap-server response");
|
|
result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: fix this code */
|
|
}
|
|
else
|
|
result = imap_perform_capability(conn);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For CAPABILITY responses */
|
|
static CURLcode imap_state_capability_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
const char *line = data->state.buffer;
|
|
size_t wordlen;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
/* Do we have a untagged response? */
|
|
if(imapcode == '*') {
|
|
line += 2;
|
|
|
|
/* Loop through the data line */
|
|
for(;;) {
|
|
while(*line &&
|
|
(*line == ' ' || *line == '\t' ||
|
|
*line == '\r' || *line == '\n')) {
|
|
|
|
line++;
|
|
}
|
|
|
|
if(!*line)
|
|
break;
|
|
|
|
/* Extract the word */
|
|
for(wordlen = 0; line[wordlen] && line[wordlen] != ' ' &&
|
|
line[wordlen] != '\t' && line[wordlen] != '\r' &&
|
|
line[wordlen] != '\n';)
|
|
wordlen++;
|
|
|
|
/* Does the server support the STARTTLS capability? */
|
|
if(wordlen == 8 && !memcmp(line, "STARTTLS", 8))
|
|
imapc->tls_supported = TRUE;
|
|
|
|
/* Has the server explicitly disabled clear text authentication? */
|
|
else if(wordlen == 13 && !memcmp(line, "LOGINDISABLED", 13))
|
|
imapc->login_disabled = TRUE;
|
|
|
|
/* Does the server support the SASL-IR capability? */
|
|
else if(wordlen == 7 && !memcmp(line, "SASL-IR", 7))
|
|
imapc->ir_supported = TRUE;
|
|
|
|
/* Do we have a SASL based authentication mechanism? */
|
|
else if(wordlen > 5 && !memcmp(line, "AUTH=", 5)) {
|
|
line += 5;
|
|
wordlen -= 5;
|
|
|
|
/* Test the word for a matching authentication mechanism */
|
|
if(wordlen == 5 && !memcmp(line, "LOGIN", 5))
|
|
imapc->authmechs |= SASL_MECH_LOGIN;
|
|
if(wordlen == 5 && !memcmp(line, "PLAIN", 5))
|
|
imapc->authmechs |= SASL_MECH_PLAIN;
|
|
else if(wordlen == 8 && !memcmp(line, "CRAM-MD5", 8))
|
|
imapc->authmechs |= SASL_MECH_CRAM_MD5;
|
|
else if(wordlen == 10 && !memcmp(line, "DIGEST-MD5", 10))
|
|
imapc->authmechs |= SASL_MECH_DIGEST_MD5;
|
|
else if(wordlen == 6 && !memcmp(line, "GSSAPI", 6))
|
|
imapc->authmechs |= SASL_MECH_GSSAPI;
|
|
else if(wordlen == 8 && !memcmp(line, "EXTERNAL", 8))
|
|
imapc->authmechs |= SASL_MECH_EXTERNAL;
|
|
else if(wordlen == 4 && !memcmp(line, "NTLM", 4))
|
|
imapc->authmechs |= SASL_MECH_NTLM;
|
|
else if(wordlen == 7 && !memcmp(line, "XOAUTH2", 7))
|
|
imapc->authmechs |= SASL_MECH_XOAUTH2;
|
|
}
|
|
|
|
line += wordlen;
|
|
}
|
|
}
|
|
else if(imapcode == 'O') {
|
|
if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
|
|
/* We don't have a SSL/TLS connection yet, but SSL is requested */
|
|
if(imapc->tls_supported)
|
|
/* Switch to TLS connection now */
|
|
result = imap_perform_starttls(conn);
|
|
else if(data->set.use_ssl == CURLUSESSL_TRY)
|
|
/* Fallback and carry on with authentication */
|
|
result = imap_perform_authenticate(conn);
|
|
else {
|
|
failf(data, "STARTTLS not supported.");
|
|
result = CURLE_USE_SSL_FAILED;
|
|
}
|
|
}
|
|
else
|
|
result = imap_perform_authenticate(conn);
|
|
}
|
|
else
|
|
result = imap_perform_login(conn);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For STARTTLS responses */
|
|
static CURLcode imap_state_starttls_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != 'O') {
|
|
if(data->set.use_ssl != CURLUSESSL_TRY) {
|
|
failf(data, "STARTTLS denied. %c", imapcode);
|
|
result = CURLE_USE_SSL_FAILED;
|
|
}
|
|
else
|
|
result = imap_perform_authenticate(conn);
|
|
}
|
|
else
|
|
result = imap_perform_upgrade_tls(conn);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For AUTHENTICATE PLAIN (without initial response) responses */
|
|
static CURLcode imap_state_auth_plain_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
size_t len = 0;
|
|
char *plainauth = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied. %c", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Create the authorisation message */
|
|
result = Curl_sasl_create_plain_message(data, conn->user, conn->passwd,
|
|
&plainauth, &len);
|
|
|
|
/* Send the message */
|
|
if(!result) {
|
|
if(plainauth) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", plainauth);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_FINAL);
|
|
}
|
|
|
|
Curl_safefree(plainauth);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For AUTHENTICATE LOGIN (without initial response) responses */
|
|
static CURLcode imap_state_auth_login_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
size_t len = 0;
|
|
char *authuser = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Create the user message */
|
|
result = Curl_sasl_create_login_message(data, conn->user,
|
|
&authuser, &len);
|
|
|
|
/* Send the user */
|
|
if(!result) {
|
|
if(authuser) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", authuser);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_LOGIN_PASSWD);
|
|
}
|
|
|
|
Curl_safefree(authuser);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For AUTHENTICATE LOGIN user entry responses */
|
|
static CURLcode imap_state_auth_login_password_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
size_t len = 0;
|
|
char *authpasswd = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Create the password message */
|
|
result = Curl_sasl_create_login_message(data, conn->passwd,
|
|
&authpasswd, &len);
|
|
|
|
/* Send the password */
|
|
if(!result) {
|
|
if(authpasswd) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", authpasswd);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_FINAL);
|
|
}
|
|
|
|
Curl_safefree(authpasswd);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#ifndef CURL_DISABLE_CRYPTO_AUTH
|
|
/* For AUTHENTICATE CRAM-MD5 responses */
|
|
static CURLcode imap_state_auth_cram_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
char *chlg64 = data->state.buffer;
|
|
size_t len = 0;
|
|
char *rplyb64 = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
return CURLE_LOGIN_DENIED;
|
|
}
|
|
|
|
/* Get the challenge */
|
|
for(chlg64 += 2; *chlg64 == ' ' || *chlg64 == '\t'; chlg64++)
|
|
;
|
|
|
|
/* Terminate the challenge */
|
|
if(*chlg64 != '=') {
|
|
for(len = strlen(chlg64); len--;)
|
|
if(chlg64[len] != '\r' && chlg64[len] != '\n' && chlg64[len] != ' ' &&
|
|
chlg64[len] != '\t')
|
|
break;
|
|
|
|
if(++len) {
|
|
chlg64[len] = '\0';
|
|
}
|
|
}
|
|
|
|
/* Create the response message */
|
|
result = Curl_sasl_create_cram_md5_message(data, chlg64, conn->user,
|
|
conn->passwd, &rplyb64, &len);
|
|
|
|
/* Send the response */
|
|
if(!result) {
|
|
if(rplyb64) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", rplyb64);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_FINAL);
|
|
}
|
|
|
|
Curl_safefree(rplyb64);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For AUTHENTICATE DIGEST-MD5 challenge responses */
|
|
static CURLcode imap_state_auth_digest_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
char *chlg64 = data->state.buffer;
|
|
size_t len = 0;
|
|
char *rplyb64 = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
return CURLE_LOGIN_DENIED;
|
|
}
|
|
|
|
/* Get the challenge */
|
|
for(chlg64 += 2; *chlg64 == ' ' || *chlg64 == '\t'; chlg64++)
|
|
;
|
|
|
|
/* Create the response message */
|
|
result = Curl_sasl_create_digest_md5_message(data, chlg64, conn->user,
|
|
conn->passwd, "imap",
|
|
&rplyb64, &len);
|
|
|
|
/* Send the response */
|
|
if(!result) {
|
|
if(rplyb64) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", rplyb64);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_DIGESTMD5_RESP);
|
|
}
|
|
|
|
Curl_safefree(rplyb64);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For AUTHENTICATE DIGEST-MD5 challenge-response responses */
|
|
static CURLcode imap_state_auth_digest_resp_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Authentication failed: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Send an empty response */
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", "");
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_FINAL);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
#ifdef USE_NTLM
|
|
/* For AUTHENTICATE NTLM (without initial response) responses */
|
|
static CURLcode imap_state_auth_ntlm_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
size_t len = 0;
|
|
char *type1msg = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Create the type-1 message */
|
|
result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
|
|
&conn->ntlm,
|
|
&type1msg, &len);
|
|
|
|
/* Send the message */
|
|
if(!result) {
|
|
if(type1msg) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", type1msg);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_NTLM_TYPE2MSG);
|
|
}
|
|
|
|
Curl_safefree(type1msg);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For NTLM type-2 responses (sent in reponse to our type-1 message) */
|
|
static CURLcode imap_state_auth_ntlm_type2msg_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
size_t len = 0;
|
|
char *type3msg = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Create the type-3 message */
|
|
result = Curl_sasl_create_ntlm_type3_message(data,
|
|
data->state.buffer + 2,
|
|
conn->user, conn->passwd,
|
|
&conn->ntlm,
|
|
&type3msg, &len);
|
|
|
|
/* Send the message */
|
|
if(!result) {
|
|
if(type3msg) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", type3msg);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_FINAL);
|
|
}
|
|
|
|
Curl_safefree(type3msg);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
/* For AUTH XOAUTH2 (without initial response) responses */
|
|
static CURLcode imap_state_auth_xoauth2_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
size_t len = 0;
|
|
char *xoauth = NULL;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
failf(data, "Access denied: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else {
|
|
/* Create the authorisation message */
|
|
result = Curl_sasl_create_xoauth2_message(conn->data, conn->user,
|
|
conn->xoauth2_bearer,
|
|
&xoauth, &len);
|
|
|
|
/* Send the message */
|
|
if(!result) {
|
|
if(xoauth) {
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", xoauth);
|
|
|
|
if(!result)
|
|
state(conn, IMAP_AUTHENTICATE_FINAL);
|
|
}
|
|
|
|
Curl_safefree(xoauth);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For final responses to the AUTHENTICATE sequence */
|
|
static CURLcode imap_state_auth_final_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != 'O') {
|
|
failf(data, "Authentication failed: %d", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else
|
|
/* End of connect phase */
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For LOGIN responses */
|
|
static CURLcode imap_state_login_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != 'O') {
|
|
failf(data, "Access denied. %c", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else
|
|
/* End of connect phase */
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For LIST responses */
|
|
static CURLcode imap_state_list_resp(struct connectdata *conn, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
char *line = conn->data->state.buffer;
|
|
size_t len = strlen(line);
|
|
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode == '*') {
|
|
/* Temporarily add the LF character back and send as body to the client */
|
|
line[len] = '\n';
|
|
result = Curl_client_write(conn, CLIENTWRITE_BODY, line, len + 1);
|
|
line[len] = '\0';
|
|
}
|
|
else if(imapcode != 'O')
|
|
result = CURLE_QUOTE_ERROR; /* TODO: Fix error code */
|
|
else
|
|
/* End of DO phase */
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For SELECT responses */
|
|
static CURLcode imap_state_select_resp(struct connectdata *conn, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = conn->data->req.protop;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
const char *line = data->state.buffer;
|
|
char tmp[20];
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode == '*') {
|
|
/* See if this is an UIDVALIDITY response */
|
|
if(sscanf(line + 2, "OK [UIDVALIDITY %19[0123456789]]", tmp) == 1) {
|
|
Curl_safefree(imapc->mailbox_uidvalidity);
|
|
imapc->mailbox_uidvalidity = strdup(tmp);
|
|
}
|
|
}
|
|
else if(imapcode == 'O') {
|
|
/* Check if the UIDVALIDITY has been specified and matches */
|
|
if(imap->uidvalidity && imapc->mailbox_uidvalidity &&
|
|
strcmp(imap->uidvalidity, imapc->mailbox_uidvalidity)) {
|
|
failf(conn->data, "Mailbox UIDVALIDITY has changed");
|
|
result = CURLE_REMOTE_FILE_NOT_FOUND;
|
|
}
|
|
else {
|
|
/* Note the currently opened mailbox on this connection */
|
|
imapc->mailbox = strdup(imap->mailbox);
|
|
|
|
if(imap->custom)
|
|
result = imap_perform_list(conn);
|
|
else
|
|
result = imap_perform_fetch(conn);
|
|
}
|
|
}
|
|
else {
|
|
failf(data, "Select failed");
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For the (first line of the) FETCH responses */
|
|
static CURLcode imap_state_fetch_resp(struct connectdata *conn, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
struct pingpong *pp = &imapc->pp;
|
|
const char *ptr = data->state.buffer;
|
|
bool parsed = FALSE;
|
|
curl_off_t size;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '*') {
|
|
Curl_pgrsSetDownloadSize(data, 0);
|
|
state(conn, IMAP_STOP);
|
|
return CURLE_REMOTE_FILE_NOT_FOUND; /* TODO: Fix error code */
|
|
}
|
|
|
|
/* Something like this is received "* 1 FETCH (BODY[TEXT] {2021}\r" so parse
|
|
the continuation data contained within the curly brackets */
|
|
while(*ptr && (*ptr != '{'))
|
|
ptr++;
|
|
|
|
if(*ptr == '{') {
|
|
char *endptr;
|
|
size = curlx_strtoofft(ptr + 1, &endptr, 10);
|
|
if(endptr - ptr > 1 && endptr[0] == '}' &&
|
|
endptr[1] == '\r' && endptr[2] == '\0')
|
|
parsed = TRUE;
|
|
}
|
|
|
|
if(parsed) {
|
|
infof(data, "Found %" FORMAT_OFF_TU " bytes to download\n", size);
|
|
Curl_pgrsSetDownloadSize(data, size);
|
|
|
|
if(pp->cache) {
|
|
/* At this point there is a bunch of data in the header "cache" that is
|
|
actually body content, send it as body and then skip it. Do note
|
|
that there may even be additional "headers" after the body. */
|
|
size_t chunk = pp->cache_size;
|
|
|
|
if(chunk > (size_t)size)
|
|
/* The conversion from curl_off_t to size_t is always fine here */
|
|
chunk = (size_t)size;
|
|
|
|
result = Curl_client_write(conn, CLIENTWRITE_BODY, pp->cache, chunk);
|
|
if(result)
|
|
return result;
|
|
|
|
data->req.bytecount += chunk;
|
|
|
|
infof(data, "Written %" FORMAT_OFF_TU " bytes, %" FORMAT_OFF_TU
|
|
" bytes are left for transfer\n", (curl_off_t)chunk,
|
|
size - chunk);
|
|
|
|
/* Have we used the entire cache or just part of it?*/
|
|
if(pp->cache_size > chunk) {
|
|
/* Only part of it so shrink the cache to fit the trailing data */
|
|
memmove(pp->cache, pp->cache + chunk, pp->cache_size - chunk);
|
|
pp->cache_size -= chunk;
|
|
}
|
|
else {
|
|
/* Free the cache */
|
|
Curl_safefree(pp->cache);
|
|
|
|
/* Reset the cache size */
|
|
pp->cache_size = 0;
|
|
}
|
|
}
|
|
|
|
if(data->req.bytecount == size)
|
|
/* The entire data is already transferred! */
|
|
Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
|
|
else {
|
|
/* IMAP download */
|
|
data->req.maxdownload = size;
|
|
Curl_setup_transfer(conn, FIRSTSOCKET, size, FALSE, NULL, -1, NULL);
|
|
}
|
|
}
|
|
else {
|
|
/* We don't know how to parse this line */
|
|
failf(pp->conn->data, "Failed to parse FETCH response.");
|
|
result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: fix this code */
|
|
}
|
|
|
|
/* End of DO phase */
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For final FETCH responses performed after the download */
|
|
static CURLcode imap_state_fetch_final_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode != 'O')
|
|
result = CURLE_FTP_WEIRD_SERVER_REPLY; /* TODO: Fix error code */
|
|
else
|
|
/* End of DONE phase */
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For APPEND responses */
|
|
static CURLcode imap_state_append_resp(struct connectdata *conn, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
result = CURLE_UPLOAD_FAILED;
|
|
}
|
|
else {
|
|
/* Set the progress upload size */
|
|
Curl_pgrsSetUploadSize(data, data->set.infilesize);
|
|
|
|
/* IMAP upload */
|
|
Curl_setup_transfer(conn, -1, -1, FALSE, NULL, FIRSTSOCKET, NULL);
|
|
|
|
/* End of DO phase */
|
|
state(conn, IMAP_STOP);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For final APPEND responses performed after the upload */
|
|
static CURLcode imap_state_append_final_resp(struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode != 'O')
|
|
result = CURLE_UPLOAD_FAILED;
|
|
else
|
|
/* End of DONE phase */
|
|
state(conn, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
static CURLcode imap_statemach_act(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
curl_socket_t sock = conn->sock[FIRSTSOCKET];
|
|
int imapcode;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
struct pingpong *pp = &imapc->pp;
|
|
size_t nread = 0;
|
|
|
|
/* Busy upgrading the connection; right now all I/O is SSL/TLS, not IMAP */
|
|
if(imapc->state == IMAP_UPGRADETLS)
|
|
return imap_perform_upgrade_tls(conn);
|
|
|
|
/* Flush any data that needs to be sent */
|
|
if(pp->sendleft)
|
|
return Curl_pp_flushsend(pp);
|
|
|
|
do {
|
|
/* Read the response from the server */
|
|
result = Curl_pp_readresp(sock, pp, &imapcode, &nread);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Was there an error parsing the response line? */
|
|
if(imapcode == -1)
|
|
return CURLE_FTP_WEIRD_SERVER_REPLY;
|
|
|
|
if(!imapcode)
|
|
break;
|
|
|
|
/* We have now received a full IMAP server response */
|
|
switch(imapc->state) {
|
|
case IMAP_SERVERGREET:
|
|
result = imap_state_servergreet_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_CAPABILITY:
|
|
result = imap_state_capability_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_STARTTLS:
|
|
result = imap_state_starttls_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_PLAIN:
|
|
result = imap_state_auth_plain_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_LOGIN:
|
|
result = imap_state_auth_login_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_LOGIN_PASSWD:
|
|
result = imap_state_auth_login_password_resp(conn, imapcode,
|
|
imapc->state);
|
|
break;
|
|
|
|
#ifndef CURL_DISABLE_CRYPTO_AUTH
|
|
case IMAP_AUTHENTICATE_CRAMMD5:
|
|
result = imap_state_auth_cram_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_DIGESTMD5:
|
|
result = imap_state_auth_digest_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_DIGESTMD5_RESP:
|
|
result = imap_state_auth_digest_resp_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
#endif
|
|
|
|
#ifdef USE_NTLM
|
|
case IMAP_AUTHENTICATE_NTLM:
|
|
result = imap_state_auth_ntlm_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_NTLM_TYPE2MSG:
|
|
result = imap_state_auth_ntlm_type2msg_resp(conn, imapcode,
|
|
imapc->state);
|
|
break;
|
|
#endif
|
|
|
|
case IMAP_AUTHENTICATE_XOAUTH2:
|
|
result = imap_state_auth_xoauth2_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE_FINAL:
|
|
result = imap_state_auth_final_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_LOGIN:
|
|
result = imap_state_login_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_LIST:
|
|
result = imap_state_list_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_SELECT:
|
|
result = imap_state_select_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_FETCH:
|
|
result = imap_state_fetch_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_FETCH_FINAL:
|
|
result = imap_state_fetch_final_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_APPEND:
|
|
result = imap_state_append_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_APPEND_FINAL:
|
|
result = imap_state_append_final_resp(conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_LOGOUT:
|
|
/* fallthrough, just stop! */
|
|
default:
|
|
/* internal error */
|
|
state(conn, IMAP_STOP);
|
|
break;
|
|
}
|
|
} while(!result && imapc->state != IMAP_STOP && Curl_pp_moredata(pp));
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Called repeatedly until done from multi.c */
|
|
static CURLcode imap_multi_statemach(struct connectdata *conn, bool *done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
|
|
if((conn->handler->flags & PROTOPT_SSL) && !imapc->ssldone) {
|
|
result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &imapc->ssldone);
|
|
if(result || !imapc->ssldone)
|
|
return result;
|
|
}
|
|
|
|
result = Curl_pp_statemach(&imapc->pp, FALSE);
|
|
*done = (imapc->state == IMAP_STOP) ? TRUE : FALSE;
|
|
|
|
return result;
|
|
}
|
|
|
|
static CURLcode imap_block_statemach(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
|
|
while(imapc->state != IMAP_STOP && !result)
|
|
result = Curl_pp_statemach(&imapc->pp, TRUE);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Allocate and initialize the struct IMAP for the current SessionHandle if
|
|
required */
|
|
static CURLcode imap_init(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap;
|
|
|
|
imap = data->req.protop = calloc(sizeof(struct IMAP), 1);
|
|
if(!imap)
|
|
result = CURLE_OUT_OF_MEMORY;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For the IMAP "protocol connect" and "doing" phases only */
|
|
static int imap_getsock(struct connectdata *conn, curl_socket_t *socks,
|
|
int numsocks)
|
|
{
|
|
return Curl_pp_getsock(&conn->proto.imapc.pp, socks, numsocks);
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_connect()
|
|
*
|
|
* This function should do everything that is to be considered a part of the
|
|
* connection phase.
|
|
*
|
|
* The variable 'done' points to will be TRUE if the protocol-layer connect
|
|
* phase is done when this function returns, or FALSE if not.
|
|
*/
|
|
static CURLcode imap_connect(struct connectdata *conn, bool *done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
struct pingpong *pp = &imapc->pp;
|
|
|
|
*done = FALSE; /* default to not done yet */
|
|
|
|
/* We always support persistent connections in IMAP */
|
|
conn->bits.close = FALSE;
|
|
|
|
/* Set the default response time-out */
|
|
pp->response_time = RESP_TIMEOUT;
|
|
pp->statemach_act = imap_statemach_act;
|
|
pp->endofresp = imap_endofresp;
|
|
pp->conn = conn;
|
|
|
|
/* Set the default preferred authentication mechanism */
|
|
imapc->prefmech = SASL_AUTH_ANY;
|
|
|
|
/* Initialise the pingpong layer */
|
|
Curl_pp_init(pp);
|
|
|
|
/* Parse the URL options */
|
|
result = imap_parse_url_options(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Start off waiting for the server greeting response */
|
|
state(conn, IMAP_SERVERGREET);
|
|
|
|
/* Start off with an response id of '*' */
|
|
strcpy(imapc->resptag, "*");
|
|
|
|
result = imap_multi_statemach(conn, done);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_done()
|
|
*
|
|
* The DONE function. This does what needs to be done after a single DO has
|
|
* performed.
|
|
*
|
|
* Input argument is already checked for validity.
|
|
*/
|
|
static CURLcode imap_done(struct connectdata *conn, CURLcode status,
|
|
bool premature)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = data->req.protop;
|
|
|
|
(void)premature;
|
|
|
|
if(!imap)
|
|
/* When the easy handle is removed from the multi interface while libcurl
|
|
is still trying to resolve the host name, the IMAP struct is not yet
|
|
initialized. However, the removal action calls Curl_done() which in
|
|
turn calls this function, so we simply return success. */
|
|
return CURLE_OK;
|
|
|
|
if(status) {
|
|
conn->bits.close = TRUE; /* marked for closure */
|
|
result = status; /* use the already set error code */
|
|
}
|
|
else if(!data->set.connect_only && !imap->custom &&
|
|
(imap->uid || data->set.upload)) {
|
|
/* Handle responses after FETCH or APPEND transfer has finished */
|
|
if(!data->set.upload)
|
|
state(conn, IMAP_FETCH_FINAL);
|
|
else {
|
|
/* End the APPEND command first by sending an empty line */
|
|
result = Curl_pp_sendf(&conn->proto.imapc.pp, "%s", "");
|
|
if(!result)
|
|
state(conn, IMAP_APPEND_FINAL);
|
|
}
|
|
|
|
/* Run the state-machine
|
|
|
|
TODO: when the multi interface is used, this _really_ should be using
|
|
the imap_multi_statemach function but we have no general support for
|
|
non-blocking DONE operations, not in the multi state machine and with
|
|
Curl_done() invokes on several places in the code!
|
|
*/
|
|
if(!result)
|
|
result = imap_block_statemach(conn);
|
|
}
|
|
|
|
/* Cleanup our per-request based variables */
|
|
Curl_safefree(imap->mailbox);
|
|
Curl_safefree(imap->uidvalidity);
|
|
Curl_safefree(imap->uid);
|
|
Curl_safefree(imap->section);
|
|
Curl_safefree(imap->custom);
|
|
Curl_safefree(imap->custom_params);
|
|
|
|
/* Clear the transfer mode for the next request */
|
|
imap->transfer = FTPTRANSFER_BODY;
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform()
|
|
*
|
|
* This is the actual DO function for IMAP. Fetch or append a message, or do
|
|
* other things according to the options previously setup.
|
|
*/
|
|
static CURLcode imap_perform(struct connectdata *conn, bool *connected,
|
|
bool *dophase_done)
|
|
{
|
|
/* This is IMAP and no proxy */
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = data->req.protop;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
bool selected = FALSE;
|
|
|
|
DEBUGF(infof(conn->data, "DO phase starts\n"));
|
|
|
|
if(conn->data->set.opt_no_body) {
|
|
/* Requested no body means no transfer */
|
|
imap->transfer = FTPTRANSFER_INFO;
|
|
}
|
|
|
|
*dophase_done = FALSE; /* not done yet */
|
|
|
|
/* Determine if the requested mailbox (with the same UIDVALIDITY if set)
|
|
has already been selected on this connection */
|
|
if(imap->mailbox && imapc->mailbox &&
|
|
!strcmp(imap->mailbox, imapc->mailbox) &&
|
|
(!imap->uidvalidity || !imapc->mailbox_uidvalidity ||
|
|
!strcmp(imap->uidvalidity, imapc->mailbox_uidvalidity)))
|
|
selected = TRUE;
|
|
|
|
/* Start the first command in the DO phase */
|
|
if(conn->data->set.upload)
|
|
/* APPEND can be executed directly */
|
|
result = imap_perform_append(conn);
|
|
else if(imap->custom && (selected || !imap->mailbox))
|
|
/* Custom command using the same mailbox or no mailbox */
|
|
result = imap_perform_list(conn);
|
|
else if(!imap->custom && selected && imap->uid)
|
|
/* FETCH from the same mailbox */
|
|
result = imap_perform_fetch(conn);
|
|
else if(imap->mailbox && !selected && (imap->custom || imap->uid))
|
|
/* SELECT the mailbox */
|
|
result = imap_perform_select(conn);
|
|
else
|
|
/* LIST */
|
|
result = imap_perform_list(conn);
|
|
|
|
if(result)
|
|
return result;
|
|
|
|
/* Run the state-machine */
|
|
result = imap_multi_statemach(conn, dophase_done);
|
|
|
|
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
|
|
|
|
if(*dophase_done)
|
|
DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_do()
|
|
*
|
|
* This function is registered as 'curl_do' function. It decodes the path
|
|
* parts etc as a wrapper to the actual DO function (imap_perform).
|
|
*
|
|
* The input argument is already checked for validity.
|
|
*/
|
|
static CURLcode imap_do(struct connectdata *conn, bool *done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
|
|
*done = FALSE; /* default to false */
|
|
|
|
/* Parse the URL path */
|
|
result = imap_parse_url_path(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Parse the custom request */
|
|
result = imap_parse_custom_request(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
result = imap_regular_transfer(conn, done);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_disconnect()
|
|
*
|
|
* Disconnect from an IMAP server. Cleanup protocol-specific per-connection
|
|
* resources. BLOCKING.
|
|
*/
|
|
static CURLcode imap_disconnect(struct connectdata *conn, bool dead_connection)
|
|
{
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
|
|
/* We cannot send quit unconditionally. If this connection is stale or
|
|
bad in any way, sending quit and waiting around here will make the
|
|
disconnect wait in vain and cause more problems than we need to. */
|
|
|
|
/* The IMAP session may or may not have been allocated/setup at this
|
|
point! */
|
|
if(!dead_connection && imapc->pp.conn)
|
|
if(!imap_perform_logout(conn))
|
|
(void)imap_block_statemach(conn); /* ignore errors on LOGOUT */
|
|
|
|
/* Disconnect from the server */
|
|
Curl_pp_disconnect(&imapc->pp);
|
|
|
|
/* Cleanup the SASL module */
|
|
Curl_sasl_cleanup(conn, imapc->authused);
|
|
|
|
/* Cleanup our connection based variables */
|
|
Curl_safefree(imapc->mailbox);
|
|
Curl_safefree(imapc->mailbox_uidvalidity);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* Call this when the DO phase has completed */
|
|
static CURLcode imap_dophase_done(struct connectdata *conn, bool connected)
|
|
{
|
|
struct IMAP *imap = conn->data->req.protop;
|
|
|
|
(void)connected;
|
|
|
|
if(imap->transfer != FTPTRANSFER_BODY)
|
|
/* no data to transfer */
|
|
Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* Called from multi.c while DOing */
|
|
static CURLcode imap_doing(struct connectdata *conn, bool *dophase_done)
|
|
{
|
|
CURLcode result = imap_multi_statemach(conn, dophase_done);
|
|
|
|
if(result)
|
|
DEBUGF(infof(conn->data, "DO phase failed\n"));
|
|
else if(*dophase_done) {
|
|
result = imap_dophase_done(conn, FALSE /* not connected */);
|
|
|
|
DEBUGF(infof(conn->data, "DO phase is complete\n"));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_regular_transfer()
|
|
*
|
|
* The input argument is already checked for validity.
|
|
*
|
|
* Performs all commands done before a regular transfer between a local and a
|
|
* remote host.
|
|
*/
|
|
static CURLcode imap_regular_transfer(struct connectdata *conn,
|
|
bool *dophase_done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
bool connected = FALSE;
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
/* Make sure size is unknown at this point */
|
|
data->req.size = -1;
|
|
|
|
/* Set the progress data */
|
|
Curl_pgrsSetUploadCounter(data, 0);
|
|
Curl_pgrsSetDownloadCounter(data, 0);
|
|
Curl_pgrsSetUploadSize(data, 0);
|
|
Curl_pgrsSetDownloadSize(data, 0);
|
|
|
|
/* Carry out the perform */
|
|
result = imap_perform(conn, &connected, dophase_done);
|
|
|
|
/* Perform post DO phase operations if necessary */
|
|
if(!result && *dophase_done)
|
|
result = imap_dophase_done(conn, connected);
|
|
|
|
return result;
|
|
}
|
|
|
|
static CURLcode imap_setup_connection(struct connectdata *conn)
|
|
{
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
/* Initialise the IMAP layer */
|
|
CURLcode result = imap_init(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
|
|
/* Unless we have asked to tunnel IMAP operations through the proxy, we
|
|
switch and use HTTP operations only */
|
|
#ifndef CURL_DISABLE_HTTP
|
|
if(conn->handler == &Curl_handler_imap)
|
|
conn->handler = &Curl_handler_imap_proxy;
|
|
else {
|
|
#ifdef USE_SSL
|
|
conn->handler = &Curl_handler_imaps_proxy;
|
|
#else
|
|
failf(data, "IMAPS not supported!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif
|
|
}
|
|
|
|
/* set it up as an HTTP connection instead */
|
|
return conn->handler->setup_connection(conn);
|
|
#else
|
|
failf(data, "IMAP over http proxy requires HTTP support built-in!");
|
|
return CURLE_UNSUPPORTED_PROTOCOL;
|
|
#endif
|
|
}
|
|
|
|
data->state.path++; /* don't include the initial slash */
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_sendf()
|
|
*
|
|
* Sends the formated string as an IMAP command to the server.
|
|
*
|
|
* Designed to never block.
|
|
*/
|
|
static CURLcode imap_sendf(struct connectdata *conn, const char *fmt, ...)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
char *taggedfmt;
|
|
va_list ap;
|
|
|
|
DEBUGASSERT(fmt);
|
|
|
|
/* Calculate the next command ID wrapping at 3 digits */
|
|
imapc->cmdid = (imapc->cmdid + 1) % 1000;
|
|
|
|
/* Calculate the tag based on the connection ID and command ID */
|
|
snprintf(imapc->resptag, sizeof(imapc->resptag), "%c%03d",
|
|
'A' + curlx_sltosi(conn->connection_id % 26), imapc->cmdid);
|
|
|
|
/* Prefix the format with the tag */
|
|
taggedfmt = aprintf("%s %s", imapc->resptag, fmt);
|
|
if(!taggedfmt)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the data with the tag */
|
|
va_start(ap, fmt);
|
|
result = Curl_pp_vsendf(&imapc->pp, taggedfmt, ap);
|
|
va_end(ap);
|
|
|
|
Curl_safefree(taggedfmt);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_atom()
|
|
*
|
|
* Checks the input string for characters that need escaping and returns an
|
|
* atom ready for sending to the server.
|
|
*
|
|
* The returned string needs to be freed.
|
|
*
|
|
*/
|
|
static char *imap_atom(const char *str)
|
|
{
|
|
const char *p1;
|
|
char *p2;
|
|
size_t backsp_count = 0;
|
|
size_t quote_count = 0;
|
|
bool space_exists = FALSE;
|
|
size_t newlen = 0;
|
|
char *newstr = NULL;
|
|
|
|
if(!str)
|
|
return NULL;
|
|
|
|
/* Count any unescapped characters */
|
|
p1 = str;
|
|
while(*p1) {
|
|
if(*p1 == '\\')
|
|
backsp_count++;
|
|
else if(*p1 == '"')
|
|
quote_count++;
|
|
else if(*p1 == ' ')
|
|
space_exists = TRUE;
|
|
|
|
p1++;
|
|
}
|
|
|
|
/* Does the input contain any unescapped characters? */
|
|
if(!backsp_count && !quote_count && !space_exists)
|
|
return strdup(str);
|
|
|
|
/* Calculate the new string length */
|
|
newlen = strlen(str) + backsp_count + quote_count + (space_exists ? 2 : 0);
|
|
|
|
/* Allocate the new string */
|
|
newstr = (char *) malloc((newlen + 1) * sizeof(char));
|
|
if(!newstr)
|
|
return NULL;
|
|
|
|
/* Surround the string in quotes if necessary */
|
|
p2 = newstr;
|
|
if(space_exists) {
|
|
newstr[0] = '"';
|
|
newstr[newlen - 1] = '"';
|
|
p2++;
|
|
}
|
|
|
|
/* Copy the string, escaping backslash and quote characters along the way */
|
|
p1 = str;
|
|
while(*p1) {
|
|
if(*p1 == '\\' || *p1 == '"') {
|
|
*p2 = '\\';
|
|
p2++;
|
|
}
|
|
|
|
*p2 = *p1;
|
|
|
|
p1++;
|
|
p2++;
|
|
}
|
|
|
|
/* Terminate the string */
|
|
newstr[newlen] = '\0';
|
|
|
|
return newstr;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_is_bchar()
|
|
*
|
|
* Portable test of whether the specified char is a "bchar" as defined in the
|
|
* grammar of RFC-5092.
|
|
*/
|
|
static bool imap_is_bchar(char ch)
|
|
{
|
|
switch(ch) {
|
|
/* bchar */
|
|
case ':': case '@': case '/':
|
|
/* bchar -> achar */
|
|
case '&': case '=':
|
|
/* bchar -> achar -> uchar -> unreserved */
|
|
case '0': case '1': case '2': case '3': case '4': case '5': case '6':
|
|
case '7': case '8': case '9':
|
|
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
|
|
case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
|
|
case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
|
|
case 'V': case 'W': case 'X': case 'Y': case 'Z':
|
|
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
|
|
case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
|
|
case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
|
|
case 'v': case 'w': case 'x': case 'y': case 'z':
|
|
case '-': case '.': case '_': case '~':
|
|
/* bchar -> achar -> uchar -> sub-delims-sh */
|
|
case '!': case '$': case '\'': case '(': case ')': case '*':
|
|
case '+': case ',':
|
|
/* bchar -> achar -> uchar -> pct-encoded */
|
|
case '%': /* HEXDIG chars are already included above */
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_parse_url_options()
|
|
*
|
|
* Parse the URL login options.
|
|
*/
|
|
static CURLcode imap_parse_url_options(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
const char *options = conn->options;
|
|
const char *ptr = options;
|
|
|
|
if(options) {
|
|
const char *key = ptr;
|
|
|
|
while(*ptr && *ptr != '=')
|
|
ptr++;
|
|
|
|
if(strnequal(key, "AUTH", 4)) {
|
|
const char *value = ptr + 1;
|
|
|
|
if(strequal(value, "*"))
|
|
imapc->prefmech = SASL_AUTH_ANY;
|
|
else if(strequal(value, "LOGIN"))
|
|
imapc->prefmech = SASL_MECH_LOGIN;
|
|
else if(strequal(value, "PLAIN"))
|
|
imapc->prefmech = SASL_MECH_PLAIN;
|
|
else if(strequal(value, "CRAM-MD5"))
|
|
imapc->prefmech = SASL_MECH_CRAM_MD5;
|
|
else if(strequal(value, "DIGEST-MD5"))
|
|
imapc->prefmech = SASL_MECH_DIGEST_MD5;
|
|
else if(strequal(value, "GSSAPI"))
|
|
imapc->prefmech = SASL_MECH_GSSAPI;
|
|
else if(strequal(value, "NTLM"))
|
|
imapc->prefmech = SASL_MECH_NTLM;
|
|
else if(strequal(value, "XOAUTH2"))
|
|
imapc->prefmech = SASL_MECH_XOAUTH2;
|
|
else
|
|
imapc->prefmech = SASL_AUTH_NONE;
|
|
}
|
|
else
|
|
result = CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_parse_url_path()
|
|
*
|
|
* Parse the URL path into separate path components.
|
|
*
|
|
*/
|
|
static CURLcode imap_parse_url_path(struct connectdata *conn)
|
|
{
|
|
/* The imap struct is already initialised in imap_connect() */
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = data->req.protop;
|
|
const char *begin = data->state.path;
|
|
const char *ptr = begin;
|
|
|
|
/* See how much of the URL is a valid path and decode it */
|
|
while(imap_is_bchar(*ptr))
|
|
ptr++;
|
|
|
|
if(ptr != begin) {
|
|
/* Remove the trailing slash if present */
|
|
const char *end = ptr;
|
|
if(end > begin && end[-1] == '/')
|
|
end--;
|
|
|
|
result = Curl_urldecode(data, begin, end - begin, &imap->mailbox, NULL,
|
|
TRUE);
|
|
if(result)
|
|
return result;
|
|
}
|
|
else
|
|
imap->mailbox = NULL;
|
|
|
|
/* There can be any number of parameters in the form ";NAME=VALUE" */
|
|
while(*ptr == ';') {
|
|
char *name;
|
|
char *value;
|
|
size_t valuelen;
|
|
|
|
/* Find the length of the name parameter */
|
|
begin = ++ptr;
|
|
while(*ptr && *ptr != '=')
|
|
ptr++;
|
|
|
|
if(!*ptr)
|
|
return CURLE_URL_MALFORMAT;
|
|
|
|
/* Decode the name parameter */
|
|
result = Curl_urldecode(data, begin, ptr - begin, &name, NULL, TRUE);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Find the length of the value parameter */
|
|
begin = ++ptr;
|
|
while(imap_is_bchar(*ptr))
|
|
ptr++;
|
|
|
|
/* Decode the value parameter */
|
|
result = Curl_urldecode(data, begin, ptr - begin, &value, &valuelen, TRUE);
|
|
if(result) {
|
|
Curl_safefree(name);
|
|
return result;
|
|
}
|
|
|
|
DEBUGF(infof(conn->data, "IMAP URL parameter '%s' = '%s'\n", name, value));
|
|
|
|
/* Process the known hierarchical parameters (UIDVALIDITY, UID and SECTION)
|
|
stripping of the trailing slash character if it is present.
|
|
|
|
Note: Unknown parameters trigger a URL_MALFORMAT error. */
|
|
if(Curl_raw_equal(name, "UIDVALIDITY") && !imap->uidvalidity) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->uidvalidity = value;
|
|
value = NULL;
|
|
}
|
|
else if(Curl_raw_equal(name, "UID") && !imap->uid) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->uid = value;
|
|
value = NULL;
|
|
}
|
|
else if(Curl_raw_equal(name, "SECTION") && !imap->section) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->section = value;
|
|
value = NULL;
|
|
}
|
|
else {
|
|
Curl_safefree(name);
|
|
Curl_safefree(value);
|
|
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
Curl_safefree(name);
|
|
Curl_safefree(value);
|
|
}
|
|
|
|
/* Any extra stuff at the end of the URL is an error */
|
|
if(*ptr)
|
|
return CURLE_URL_MALFORMAT;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_parse_custom_request()
|
|
*
|
|
* Parse the custom request.
|
|
*/
|
|
static CURLcode imap_parse_custom_request(struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct SessionHandle *data = conn->data;
|
|
struct IMAP *imap = data->req.protop;
|
|
const char *custom = data->set.str[STRING_CUSTOMREQUEST];
|
|
|
|
if(custom) {
|
|
/* URL decode the custom request */
|
|
result = Curl_urldecode(data, custom, 0, &imap->custom, NULL, TRUE);
|
|
|
|
/* Extract the parameters if specified */
|
|
if(!result) {
|
|
const char *params = imap->custom;
|
|
|
|
while(*params && *params != ' ')
|
|
params++;
|
|
|
|
if(*params) {
|
|
imap->custom_params = strdup(params);
|
|
imap->custom[params - imap->custom] = '\0';
|
|
|
|
if(!imap->custom_params)
|
|
result = CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#endif /* CURL_DISABLE_IMAP */
|