2134 строки
60 KiB
C
2134 строки
60 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 - 2022, 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 https://curl.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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* RFC4752 The Kerberos V5 ("GSSAPI") SASL Mechanism
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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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* RFC8314 Use of TLS for Email Submission and Access
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* Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
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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 "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 "mime.h"
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#include "strtoofft.h"
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#include "strcase.h"
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#include "vtls/vtls.h"
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#include "connect.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 "strcase.h"
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#include "bufref.h"
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#include "curl_sasl.h"
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#include "warnless.h"
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/* The last 3 #include files should be in this order */
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#include "curl_printf.h"
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#include "curl_memory.h"
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#include "memdebug.h"
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/* Local API functions */
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static CURLcode imap_regular_transfer(struct Curl_easy *data, bool *done);
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static CURLcode imap_do(struct Curl_easy *data, bool *done);
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static CURLcode imap_done(struct Curl_easy *data, CURLcode status,
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bool premature);
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static CURLcode imap_connect(struct Curl_easy *data, bool *done);
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static CURLcode imap_disconnect(struct Curl_easy *data,
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struct connectdata *conn, bool dead);
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static CURLcode imap_multi_statemach(struct Curl_easy *data, bool *done);
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static int imap_getsock(struct Curl_easy *data, struct connectdata *conn,
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curl_socket_t *socks);
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static CURLcode imap_doing(struct Curl_easy *data, bool *dophase_done);
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static CURLcode imap_setup_connection(struct Curl_easy *data,
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struct connectdata *conn);
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static char *imap_atom(const char *str, bool escape_only);
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static CURLcode imap_sendf(struct Curl_easy *data, 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 Curl_easy *data);
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static CURLcode imap_parse_custom_request(struct Curl_easy *data);
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static CURLcode imap_perform_authenticate(struct Curl_easy *data,
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const char *mech,
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const struct bufref *initresp);
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static CURLcode imap_continue_authenticate(struct Curl_easy *data,
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const char *mech,
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const struct bufref *resp);
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static CURLcode imap_cancel_authenticate(struct Curl_easy *data,
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const char *mech);
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static CURLcode imap_get_message(struct Curl_easy *data, struct bufref *out);
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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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ZERO_NULL, /* connection_check */
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ZERO_NULL, /* attach connection */
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PORT_IMAP, /* defport */
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CURLPROTO_IMAP, /* protocol */
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CURLPROTO_IMAP, /* family */
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PROTOPT_CLOSEACTION| /* flags */
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PROTOPT_URLOPTIONS
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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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ZERO_NULL, /* connection_check */
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ZERO_NULL, /* attach connection */
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PORT_IMAPS, /* defport */
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CURLPROTO_IMAPS, /* protocol */
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CURLPROTO_IMAP, /* family */
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PROTOPT_CLOSEACTION | PROTOPT_SSL | /* flags */
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PROTOPT_URLOPTIONS
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};
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#endif
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#define IMAP_RESP_OK 1
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#define IMAP_RESP_NOT_OK 2
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#define IMAP_RESP_PREAUTH 3
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/* SASL parameters for the imap protocol */
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static const struct SASLproto saslimap = {
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"imap", /* The service name */
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imap_perform_authenticate, /* Send authentication command */
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imap_continue_authenticate, /* Send authentication continuation */
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imap_cancel_authenticate, /* Send authentication cancellation */
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imap_get_message, /* Get SASL response message */
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0, /* No maximum initial response length */
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'+', /* Code received when continuation is expected */
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IMAP_RESP_OK, /* Code to receive upon authentication success */
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SASL_AUTH_DEFAULT, /* Default mechanisms */
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SASL_FLAG_BASE64 /* Configuration flags */
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};
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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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/* Change the connection handler */
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conn->handler = &Curl_handler_imaps;
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/* Set the connection's upgraded to TLS flag */
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conn->bits.tls_upgraded = TRUE;
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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 && strncasecompare(line, cmd, cmd_len) &&
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(line[cmd_len] == ' ' || line + cmd_len + 2 == 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 Curl_easy *data, struct connectdata *conn,
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char *line, size_t len, int *resp)
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{
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struct IMAP *imap = data->req.p.imap;
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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 = IMAP_RESP_OK;
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else if(len >= 7 && !memcmp(line, "PREAUTH", 7))
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*resp = IMAP_RESP_PREAUTH;
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else
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*resp = IMAP_RESP_NOT_OK;
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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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(!strcasecompare(imap->custom, "STORE") ||
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!imap_matchresp(line, len, "FETCH")) &&
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!strcasecompare(imap->custom, "SELECT") &&
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!strcasecompare(imap->custom, "EXAMINE") &&
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!strcasecompare(imap->custom, "SEARCH") &&
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!strcasecompare(imap->custom, "EXPUNGE") &&
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!strcasecompare(imap->custom, "LSUB") &&
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!strcasecompare(imap->custom, "UID") &&
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!strcasecompare(imap->custom, "GETQUOTAROOT") &&
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!strcasecompare(imap->custom, "NOOP")))
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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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case IMAP_SEARCH:
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if(!imap_matchresp(line, len, "SEARCH"))
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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? This should be a + symbol followed by
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a space and optionally some text as per RFC-3501 for the AUTHENTICATE and
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APPEND commands and as outlined in Section 4. Examples of RFC-4959 but
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some email servers ignore this and only send a single + instead. */
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if(imap && !imap->custom && ((len == 3 && line[0] == '+') ||
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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:
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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(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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* imap_get_message()
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*
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* Gets the authentication message from the response buffer.
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*/
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static CURLcode imap_get_message(struct Curl_easy *data, struct bufref *out)
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{
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char *message = data->state.buffer;
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size_t len = strlen(message);
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if(len > 2) {
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/* Find the start of the message */
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len -= 2;
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for(message += 2; *message == ' ' || *message == '\t'; message++, len--)
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;
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/* Find the end of the message */
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while(len--)
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if(message[len] != '\r' && message[len] != '\n' && message[len] != ' ' &&
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message[len] != '\t')
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break;
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/* Terminate the message */
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message[++len] = '\0';
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Curl_bufref_set(out, message, len, NULL);
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}
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else
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/* junk input => zero length output */
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Curl_bufref_set(out, "", 0, NULL);
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return CURLE_OK;
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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 Curl_easy *data, imapstate newstate)
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{
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struct imap_conn *imapc = &data->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",
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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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"SEARCH",
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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(data, "IMAP %p state change from %s to %s",
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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 Curl_easy *data,
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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->sasl.authmechs = SASL_AUTH_NONE; /* No known auth. mechanisms yet */
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imapc->sasl.authused = SASL_AUTH_NONE; /* Clear the auth. 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(data, "CAPABILITY");
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if(!result)
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state(data, 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 Curl_easy *data)
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{
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/* Send the STARTTLS command */
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CURLcode result = imap_sendf(data, "STARTTLS");
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if(!result)
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state(data, IMAP_STARTTLS);
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return result;
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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 Curl_easy *data,
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struct connectdata *conn)
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{
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/* Start the SSL connection */
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struct imap_conn *imapc = &conn->proto.imapc;
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CURLcode result = Curl_ssl_connect_nonblocking(data, conn, FALSE,
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FIRSTSOCKET, &imapc->ssldone);
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if(!result) {
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if(imapc->state != IMAP_UPGRADETLS)
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state(data, 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(data, 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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* 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 Curl_easy *data,
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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(!data->state.aptr.user) {
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state(data, 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, false);
|
|
passwd = imap_atom(conn->passwd, false);
|
|
|
|
/* Send the LOGIN command */
|
|
result = imap_sendf(data, "LOGIN %s %s", user ? user : "",
|
|
passwd ? passwd : "");
|
|
|
|
free(user);
|
|
free(passwd);
|
|
|
|
if(!result)
|
|
state(data, IMAP_LOGIN);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_authenticate()
|
|
*
|
|
* Sends an AUTHENTICATE command allowing the client to login with the given
|
|
* SASL authentication mechanism.
|
|
*/
|
|
static CURLcode imap_perform_authenticate(struct Curl_easy *data,
|
|
const char *mech,
|
|
const struct bufref *initresp)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
const char *ir = (const char *) Curl_bufref_ptr(initresp);
|
|
|
|
if(ir) {
|
|
/* Send the AUTHENTICATE command with the initial response */
|
|
result = imap_sendf(data, "AUTHENTICATE %s %s", mech, ir);
|
|
}
|
|
else {
|
|
/* Send the AUTHENTICATE command */
|
|
result = imap_sendf(data, "AUTHENTICATE %s", mech);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_continue_authenticate()
|
|
*
|
|
* Sends SASL continuation data.
|
|
*/
|
|
static CURLcode imap_continue_authenticate(struct Curl_easy *data,
|
|
const char *mech,
|
|
const struct bufref *resp)
|
|
{
|
|
struct imap_conn *imapc = &data->conn->proto.imapc;
|
|
|
|
(void)mech;
|
|
|
|
return Curl_pp_sendf(data, &imapc->pp,
|
|
"%s", (const char *) Curl_bufref_ptr(resp));
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_cancel_authenticate()
|
|
*
|
|
* Sends SASL cancellation.
|
|
*/
|
|
static CURLcode imap_cancel_authenticate(struct Curl_easy *data,
|
|
const char *mech)
|
|
{
|
|
struct imap_conn *imapc = &data->conn->proto.imapc;
|
|
|
|
(void)mech;
|
|
|
|
return Curl_pp_sendf(data, &imapc->pp, "*");
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_authentication()
|
|
*
|
|
* Initiates the authentication sequence, with the appropriate SASL
|
|
* authentication mechanism, falling back to clear text should a common
|
|
* mechanism not be available between the client and server.
|
|
*/
|
|
static CURLcode imap_perform_authentication(struct Curl_easy *data,
|
|
struct connectdata *conn)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
saslprogress progress;
|
|
|
|
/* Check if already authenticated OR if there is enough data to authenticate
|
|
with and end the connect phase if we don't */
|
|
if(imapc->preauth ||
|
|
!Curl_sasl_can_authenticate(&imapc->sasl, data)) {
|
|
state(data, IMAP_STOP);
|
|
return result;
|
|
}
|
|
|
|
/* Calculate the SASL login details */
|
|
result = Curl_sasl_start(&imapc->sasl, data, imapc->ir_supported, &progress);
|
|
|
|
if(!result) {
|
|
if(progress == SASL_INPROGRESS)
|
|
state(data, IMAP_AUTHENTICATE);
|
|
else if(!imapc->login_disabled && (imapc->preftype & IMAP_TYPE_CLEARTEXT))
|
|
/* Perform clear text authentication */
|
|
result = imap_perform_login(data, conn);
|
|
else {
|
|
/* Other mechanisms not supported */
|
|
infof(data, "No known authentication mechanisms supported");
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_list()
|
|
*
|
|
* Sends a LIST command or an alternative custom request.
|
|
*/
|
|
static CURLcode imap_perform_list(struct Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
|
|
if(imap->custom)
|
|
/* Send the custom request */
|
|
result = imap_sendf(data, "%s%s", imap->custom,
|
|
imap->custom_params ? imap->custom_params : "");
|
|
else {
|
|
/* Make sure the mailbox is in the correct atom format if necessary */
|
|
char *mailbox = imap->mailbox ? imap_atom(imap->mailbox, true)
|
|
: strdup("");
|
|
if(!mailbox)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the LIST command */
|
|
result = imap_sendf(data, "LIST \"%s\" *", mailbox);
|
|
|
|
free(mailbox);
|
|
}
|
|
|
|
if(!result)
|
|
state(data, 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 Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
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(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, false);
|
|
if(!mailbox)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the SELECT command */
|
|
result = imap_sendf(data, "SELECT %s", mailbox);
|
|
|
|
free(mailbox);
|
|
|
|
if(!result)
|
|
state(data, IMAP_SELECT);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_fetch()
|
|
*
|
|
* Sends a FETCH command to initiate the download of a message.
|
|
*/
|
|
static CURLcode imap_perform_fetch(struct Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
/* Check we have a UID */
|
|
if(imap->uid) {
|
|
|
|
/* Send the FETCH command */
|
|
if(imap->partial)
|
|
result = imap_sendf(data, "UID FETCH %s BODY[%s]<%s>",
|
|
imap->uid, imap->section ? imap->section : "",
|
|
imap->partial);
|
|
else
|
|
result = imap_sendf(data, "UID FETCH %s BODY[%s]",
|
|
imap->uid, imap->section ? imap->section : "");
|
|
}
|
|
else if(imap->mindex) {
|
|
/* Send the FETCH command */
|
|
if(imap->partial)
|
|
result = imap_sendf(data, "FETCH %s BODY[%s]<%s>",
|
|
imap->mindex, imap->section ? imap->section : "",
|
|
imap->partial);
|
|
else
|
|
result = imap_sendf(data, "FETCH %s BODY[%s]",
|
|
imap->mindex, imap->section ? imap->section : "");
|
|
}
|
|
else {
|
|
failf(data, "Cannot FETCH without a UID.");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
if(!result)
|
|
state(data, IMAP_FETCH);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_append()
|
|
*
|
|
* Sends an APPEND command to initiate the upload of a message.
|
|
*/
|
|
static CURLcode imap_perform_append(struct Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
char *mailbox;
|
|
|
|
/* Check we have a mailbox */
|
|
if(!imap->mailbox) {
|
|
failf(data, "Cannot APPEND without a mailbox.");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
/* Prepare the mime data if some. */
|
|
if(data->set.mimepost.kind != MIMEKIND_NONE) {
|
|
/* Use the whole structure as data. */
|
|
data->set.mimepost.flags &= ~MIME_BODY_ONLY;
|
|
|
|
/* Add external headers and mime version. */
|
|
curl_mime_headers(&data->set.mimepost, data->set.headers, 0);
|
|
result = Curl_mime_prepare_headers(&data->set.mimepost, NULL,
|
|
NULL, MIMESTRATEGY_MAIL);
|
|
|
|
if(!result)
|
|
if(!Curl_checkheaders(data, STRCONST("Mime-Version")))
|
|
result = Curl_mime_add_header(&data->set.mimepost.curlheaders,
|
|
"Mime-Version: 1.0");
|
|
|
|
/* Make sure we will read the entire mime structure. */
|
|
if(!result)
|
|
result = Curl_mime_rewind(&data->set.mimepost);
|
|
|
|
if(result)
|
|
return result;
|
|
|
|
data->state.infilesize = Curl_mime_size(&data->set.mimepost);
|
|
|
|
/* Read from mime structure. */
|
|
data->state.fread_func = (curl_read_callback) Curl_mime_read;
|
|
data->state.in = (void *) &data->set.mimepost;
|
|
}
|
|
|
|
/* Check we know the size of the upload */
|
|
if(data->state.infilesize < 0) {
|
|
failf(data, "Cannot APPEND with unknown input file size");
|
|
return CURLE_UPLOAD_FAILED;
|
|
}
|
|
|
|
/* Make sure the mailbox is in the correct atom format */
|
|
mailbox = imap_atom(imap->mailbox, false);
|
|
if(!mailbox)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
/* Send the APPEND command */
|
|
result = imap_sendf(data,
|
|
"APPEND %s (\\Seen) {%" CURL_FORMAT_CURL_OFF_T "}",
|
|
mailbox, data->state.infilesize);
|
|
|
|
free(mailbox);
|
|
|
|
if(!result)
|
|
state(data, IMAP_APPEND);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_search()
|
|
*
|
|
* Sends a SEARCH command.
|
|
*/
|
|
static CURLcode imap_perform_search(struct Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
|
|
/* Check we have a query string */
|
|
if(!imap->query) {
|
|
failf(data, "Cannot SEARCH without a query string.");
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
/* Send the SEARCH command */
|
|
result = imap_sendf(data, "SEARCH %s", imap->query);
|
|
|
|
if(!result)
|
|
state(data, IMAP_SEARCH);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_perform_logout()
|
|
*
|
|
* Performs the logout action prior to sclose() being called.
|
|
*/
|
|
static CURLcode imap_perform_logout(struct Curl_easy *data)
|
|
{
|
|
/* Send the LOGOUT command */
|
|
CURLcode result = imap_sendf(data, "LOGOUT");
|
|
|
|
if(!result)
|
|
state(data, IMAP_LOGOUT);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For the initial server greeting */
|
|
static CURLcode imap_state_servergreet_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
struct connectdata *conn = data->conn;
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode == IMAP_RESP_PREAUTH) {
|
|
/* PREAUTH */
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
imapc->preauth = TRUE;
|
|
infof(data, "PREAUTH connection, already authenticated");
|
|
}
|
|
else if(imapcode != IMAP_RESP_OK) {
|
|
failf(data, "Got unexpected imap-server response");
|
|
return CURLE_WEIRD_SERVER_REPLY;
|
|
}
|
|
|
|
return imap_perform_capability(data, conn);
|
|
}
|
|
|
|
/* For CAPABILITY responses */
|
|
static CURLcode imap_state_capability_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
const char *line = data->state.buffer;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
/* Do we have a untagged response? */
|
|
if(imapcode == '*') {
|
|
line += 2;
|
|
|
|
/* Loop through the data line */
|
|
for(;;) {
|
|
size_t wordlen;
|
|
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)) {
|
|
size_t llen;
|
|
unsigned short mechbit;
|
|
|
|
line += 5;
|
|
wordlen -= 5;
|
|
|
|
/* Test the word for a matching authentication mechanism */
|
|
mechbit = Curl_sasl_decode_mech(line, wordlen, &llen);
|
|
if(mechbit && llen == wordlen)
|
|
imapc->sasl.authmechs |= mechbit;
|
|
}
|
|
|
|
line += wordlen;
|
|
}
|
|
}
|
|
else if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
|
|
/* PREAUTH is not compatible with STARTTLS. */
|
|
if(imapcode == IMAP_RESP_OK && imapc->tls_supported && !imapc->preauth) {
|
|
/* Switch to TLS connection now */
|
|
result = imap_perform_starttls(data);
|
|
}
|
|
else if(data->set.use_ssl <= CURLUSESSL_TRY)
|
|
result = imap_perform_authentication(data, conn);
|
|
else {
|
|
failf(data, "STARTTLS not available.");
|
|
result = CURLE_USE_SSL_FAILED;
|
|
}
|
|
}
|
|
else
|
|
result = imap_perform_authentication(data, conn);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For STARTTLS responses */
|
|
static CURLcode imap_state_starttls_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
/* Pipelining in response is forbidden. */
|
|
if(data->conn->proto.imapc.pp.cache_size)
|
|
return CURLE_WEIRD_SERVER_REPLY;
|
|
|
|
if(imapcode != IMAP_RESP_OK) {
|
|
if(data->set.use_ssl != CURLUSESSL_TRY) {
|
|
failf(data, "STARTTLS denied");
|
|
result = CURLE_USE_SSL_FAILED;
|
|
}
|
|
else
|
|
result = imap_perform_authentication(data, conn);
|
|
}
|
|
else
|
|
result = imap_perform_upgrade_tls(data, conn);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For SASL authentication responses */
|
|
static CURLcode imap_state_auth_resp(struct Curl_easy *data,
|
|
struct connectdata *conn,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
saslprogress progress;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
result = Curl_sasl_continue(&imapc->sasl, data, imapcode, &progress);
|
|
if(!result)
|
|
switch(progress) {
|
|
case SASL_DONE:
|
|
state(data, IMAP_STOP); /* Authenticated */
|
|
break;
|
|
case SASL_IDLE: /* No mechanism left after cancellation */
|
|
if((!imapc->login_disabled) && (imapc->preftype & IMAP_TYPE_CLEARTEXT))
|
|
/* Perform clear text authentication */
|
|
result = imap_perform_login(data, conn);
|
|
else {
|
|
failf(data, "Authentication cancelled");
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For LOGIN responses */
|
|
static CURLcode imap_state_login_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != IMAP_RESP_OK) {
|
|
failf(data, "Access denied. %c", imapcode);
|
|
result = CURLE_LOGIN_DENIED;
|
|
}
|
|
else
|
|
/* End of connect phase */
|
|
state(data, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For LIST and SEARCH responses */
|
|
static CURLcode imap_state_listsearch_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
char *line = 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(data, CLIENTWRITE_BODY, line, len + 1);
|
|
line[len] = '\0';
|
|
}
|
|
else if(imapcode != IMAP_RESP_OK)
|
|
result = CURLE_QUOTE_ERROR;
|
|
else
|
|
/* End of DO phase */
|
|
state(data, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For SELECT responses */
|
|
static CURLcode imap_state_select_resp(struct Curl_easy *data, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
const char *line = data->state.buffer;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode == '*') {
|
|
/* See if this is an UIDVALIDITY response */
|
|
char tmp[20];
|
|
if(sscanf(line + 2, "OK [UIDVALIDITY %19[0123456789]]", tmp) == 1) {
|
|
Curl_safefree(imapc->mailbox_uidvalidity);
|
|
imapc->mailbox_uidvalidity = strdup(tmp);
|
|
}
|
|
}
|
|
else if(imapcode == IMAP_RESP_OK) {
|
|
/* Check if the UIDVALIDITY has been specified and matches */
|
|
if(imap->uidvalidity && imapc->mailbox_uidvalidity &&
|
|
!strcasecompare(imap->uidvalidity, imapc->mailbox_uidvalidity)) {
|
|
failf(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(data);
|
|
else if(imap->query)
|
|
result = imap_perform_search(data);
|
|
else
|
|
result = imap_perform_fetch(data);
|
|
}
|
|
}
|
|
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 Curl_easy *data,
|
|
struct connectdata *conn, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
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 = 0;
|
|
|
|
(void)instate; /* no use for this yet */
|
|
|
|
if(imapcode != '*') {
|
|
Curl_pgrsSetDownloadSize(data, -1);
|
|
state(data, IMAP_STOP);
|
|
return CURLE_REMOTE_FILE_NOT_FOUND;
|
|
}
|
|
|
|
/* 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;
|
|
if(!curlx_strtoofft(ptr + 1, &endptr, 10, &size)) {
|
|
if(endptr - ptr > 1 && endptr[0] == '}' &&
|
|
endptr[1] == '\r' && endptr[2] == '\0')
|
|
parsed = TRUE;
|
|
}
|
|
}
|
|
|
|
if(parsed) {
|
|
infof(data, "Found %" CURL_FORMAT_CURL_OFF_T " bytes to download",
|
|
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;
|
|
|
|
if(!chunk) {
|
|
/* no size, we're done with the data */
|
|
state(data, IMAP_STOP);
|
|
return CURLE_OK;
|
|
}
|
|
result = Curl_client_write(data, CLIENTWRITE_BODY, pp->cache, chunk);
|
|
if(result)
|
|
return result;
|
|
|
|
data->req.bytecount += chunk;
|
|
|
|
infof(data, "Written %zu bytes, %" CURL_FORMAT_CURL_OFF_TU
|
|
" bytes are left for transfer", 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(data, -1, -1, FALSE, -1);
|
|
else {
|
|
/* IMAP download */
|
|
data->req.maxdownload = size;
|
|
/* force a recv/send check of this connection, as the data might've been
|
|
read off the socket already */
|
|
data->conn->cselect_bits = CURL_CSELECT_IN;
|
|
Curl_setup_transfer(data, FIRSTSOCKET, size, FALSE, -1);
|
|
}
|
|
}
|
|
else {
|
|
/* We don't know how to parse this line */
|
|
failf(data, "Failed to parse FETCH response.");
|
|
result = CURLE_WEIRD_SERVER_REPLY;
|
|
}
|
|
|
|
/* End of DO phase */
|
|
state(data, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For final FETCH responses performed after the download */
|
|
static CURLcode imap_state_fetch_final_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode != IMAP_RESP_OK)
|
|
result = CURLE_WEIRD_SERVER_REPLY;
|
|
else
|
|
/* End of DONE phase */
|
|
state(data, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For APPEND responses */
|
|
static CURLcode imap_state_append_resp(struct Curl_easy *data, int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode != '+') {
|
|
result = CURLE_UPLOAD_FAILED;
|
|
}
|
|
else {
|
|
/* Set the progress upload size */
|
|
Curl_pgrsSetUploadSize(data, data->state.infilesize);
|
|
|
|
/* IMAP upload */
|
|
Curl_setup_transfer(data, -1, -1, FALSE, FIRSTSOCKET);
|
|
|
|
/* End of DO phase */
|
|
state(data, IMAP_STOP);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* For final APPEND responses performed after the upload */
|
|
static CURLcode imap_state_append_final_resp(struct Curl_easy *data,
|
|
int imapcode,
|
|
imapstate instate)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
|
|
(void)instate; /* No use for this yet */
|
|
|
|
if(imapcode != IMAP_RESP_OK)
|
|
result = CURLE_UPLOAD_FAILED;
|
|
else
|
|
/* End of DONE phase */
|
|
state(data, IMAP_STOP);
|
|
|
|
return result;
|
|
}
|
|
|
|
static CURLcode imap_statemachine(struct Curl_easy *data,
|
|
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;
|
|
(void)data;
|
|
|
|
/* Busy upgrading the connection; right now all I/O is SSL/TLS, not IMAP */
|
|
if(imapc->state == IMAP_UPGRADETLS)
|
|
return imap_perform_upgrade_tls(data, conn);
|
|
|
|
/* Flush any data that needs to be sent */
|
|
if(pp->sendleft)
|
|
return Curl_pp_flushsend(data, pp);
|
|
|
|
do {
|
|
/* Read the response from the server */
|
|
result = Curl_pp_readresp(data, sock, pp, &imapcode, &nread);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Was there an error parsing the response line? */
|
|
if(imapcode == -1)
|
|
return CURLE_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(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_CAPABILITY:
|
|
result = imap_state_capability_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_STARTTLS:
|
|
result = imap_state_starttls_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_AUTHENTICATE:
|
|
result = imap_state_auth_resp(data, conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_LOGIN:
|
|
result = imap_state_login_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_LIST:
|
|
case IMAP_SEARCH:
|
|
result = imap_state_listsearch_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_SELECT:
|
|
result = imap_state_select_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_FETCH:
|
|
result = imap_state_fetch_resp(data, conn, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_FETCH_FINAL:
|
|
result = imap_state_fetch_final_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_APPEND:
|
|
result = imap_state_append_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_APPEND_FINAL:
|
|
result = imap_state_append_final_resp(data, imapcode, imapc->state);
|
|
break;
|
|
|
|
case IMAP_LOGOUT:
|
|
/* fallthrough, just stop! */
|
|
default:
|
|
/* internal error */
|
|
state(data, 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 Curl_easy *data, bool *done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
|
|
if((conn->handler->flags & PROTOPT_SSL) && !imapc->ssldone) {
|
|
result = Curl_ssl_connect_nonblocking(data, conn, FALSE,
|
|
FIRSTSOCKET, &imapc->ssldone);
|
|
if(result || !imapc->ssldone)
|
|
return result;
|
|
}
|
|
|
|
result = Curl_pp_statemach(data, &imapc->pp, FALSE, FALSE);
|
|
*done = (imapc->state == IMAP_STOP) ? TRUE : FALSE;
|
|
|
|
return result;
|
|
}
|
|
|
|
static CURLcode imap_block_statemach(struct Curl_easy *data,
|
|
struct connectdata *conn,
|
|
bool disconnecting)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
|
|
while(imapc->state != IMAP_STOP && !result)
|
|
result = Curl_pp_statemach(data, &imapc->pp, TRUE, disconnecting);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Allocate and initialize the struct IMAP for the current Curl_easy if
|
|
required */
|
|
static CURLcode imap_init(struct Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap;
|
|
|
|
imap = data->req.p.imap = 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 Curl_easy *data,
|
|
struct connectdata *conn,
|
|
curl_socket_t *socks)
|
|
{
|
|
return Curl_pp_getsock(data, &conn->proto.imapc.pp, socks);
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* 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 Curl_easy *data, bool *done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
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 */
|
|
connkeep(conn, "IMAP default");
|
|
|
|
PINGPONG_SETUP(pp, imap_statemachine, imap_endofresp);
|
|
|
|
/* Set the default preferred authentication type and mechanism */
|
|
imapc->preftype = IMAP_TYPE_ANY;
|
|
Curl_sasl_init(&imapc->sasl, data, &saslimap);
|
|
|
|
Curl_dyn_init(&imapc->dyn, DYN_IMAP_CMD);
|
|
/* Initialise the pingpong layer */
|
|
Curl_pp_setup(pp);
|
|
Curl_pp_init(data, pp);
|
|
|
|
/* Parse the URL options */
|
|
result = imap_parse_url_options(conn);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Start off waiting for the server greeting response */
|
|
state(data, IMAP_SERVERGREET);
|
|
|
|
/* Start off with an response id of '*' */
|
|
strcpy(imapc->resptag, "*");
|
|
|
|
result = imap_multi_statemach(data, 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 Curl_easy *data, CURLcode status,
|
|
bool premature)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
|
|
(void)premature;
|
|
|
|
if(!imap)
|
|
return CURLE_OK;
|
|
|
|
if(status) {
|
|
connclose(conn, "IMAP done with bad status"); /* marked for closure */
|
|
result = status; /* use the already set error code */
|
|
}
|
|
else if(!data->set.connect_only && !imap->custom &&
|
|
(imap->uid || imap->mindex || data->set.upload ||
|
|
data->set.mimepost.kind != MIMEKIND_NONE)) {
|
|
/* Handle responses after FETCH or APPEND transfer has finished */
|
|
|
|
if(!data->set.upload && data->set.mimepost.kind == MIMEKIND_NONE)
|
|
state(data, IMAP_FETCH_FINAL);
|
|
else {
|
|
/* End the APPEND command first by sending an empty line */
|
|
result = Curl_pp_sendf(data, &conn->proto.imapc.pp, "%s", "");
|
|
if(!result)
|
|
state(data, IMAP_APPEND_FINAL);
|
|
}
|
|
|
|
/* Run the state-machine */
|
|
if(!result)
|
|
result = imap_block_statemach(data, conn, FALSE);
|
|
}
|
|
|
|
/* Cleanup our per-request based variables */
|
|
Curl_safefree(imap->mailbox);
|
|
Curl_safefree(imap->uidvalidity);
|
|
Curl_safefree(imap->uid);
|
|
Curl_safefree(imap->mindex);
|
|
Curl_safefree(imap->section);
|
|
Curl_safefree(imap->partial);
|
|
Curl_safefree(imap->query);
|
|
Curl_safefree(imap->custom);
|
|
Curl_safefree(imap->custom_params);
|
|
|
|
/* Clear the transfer mode for the next request */
|
|
imap->transfer = PPTRANSFER_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 Curl_easy *data, bool *connected,
|
|
bool *dophase_done)
|
|
{
|
|
/* This is IMAP and no proxy */
|
|
CURLcode result = CURLE_OK;
|
|
struct connectdata *conn = data->conn;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
bool selected = FALSE;
|
|
|
|
DEBUGF(infof(data, "DO phase starts"));
|
|
|
|
if(data->set.opt_no_body) {
|
|
/* Requested no body means no transfer */
|
|
imap->transfer = PPTRANSFER_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 &&
|
|
strcasecompare(imap->mailbox, imapc->mailbox) &&
|
|
(!imap->uidvalidity || !imapc->mailbox_uidvalidity ||
|
|
strcasecompare(imap->uidvalidity, imapc->mailbox_uidvalidity)))
|
|
selected = TRUE;
|
|
|
|
/* Start the first command in the DO phase */
|
|
if(data->set.upload || data->set.mimepost.kind != MIMEKIND_NONE)
|
|
/* APPEND can be executed directly */
|
|
result = imap_perform_append(data);
|
|
else if(imap->custom && (selected || !imap->mailbox))
|
|
/* Custom command using the same mailbox or no mailbox */
|
|
result = imap_perform_list(data);
|
|
else if(!imap->custom && selected && (imap->uid || imap->mindex))
|
|
/* FETCH from the same mailbox */
|
|
result = imap_perform_fetch(data);
|
|
else if(!imap->custom && selected && imap->query)
|
|
/* SEARCH the current mailbox */
|
|
result = imap_perform_search(data);
|
|
else if(imap->mailbox && !selected &&
|
|
(imap->custom || imap->uid || imap->mindex || imap->query))
|
|
/* SELECT the mailbox */
|
|
result = imap_perform_select(data);
|
|
else
|
|
/* LIST */
|
|
result = imap_perform_list(data);
|
|
|
|
if(result)
|
|
return result;
|
|
|
|
/* Run the state-machine */
|
|
result = imap_multi_statemach(data, dophase_done);
|
|
|
|
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
|
|
|
|
if(*dophase_done)
|
|
DEBUGF(infof(data, "DO phase is complete"));
|
|
|
|
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 Curl_easy *data, bool *done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
*done = FALSE; /* default to false */
|
|
|
|
/* Parse the URL path */
|
|
result = imap_parse_url_path(data);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Parse the custom request */
|
|
result = imap_parse_custom_request(data);
|
|
if(result)
|
|
return result;
|
|
|
|
result = imap_regular_transfer(data, done);
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_disconnect()
|
|
*
|
|
* Disconnect from an IMAP server. Cleanup protocol-specific per-connection
|
|
* resources. BLOCKING.
|
|
*/
|
|
static CURLcode imap_disconnect(struct Curl_easy *data,
|
|
struct connectdata *conn, bool dead_connection)
|
|
{
|
|
struct imap_conn *imapc = &conn->proto.imapc;
|
|
(void)data;
|
|
|
|
/* 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 && conn->bits.protoconnstart) {
|
|
if(!imap_perform_logout(data))
|
|
(void)imap_block_statemach(data, conn, TRUE); /* ignore errors */
|
|
}
|
|
|
|
/* Disconnect from the server */
|
|
Curl_pp_disconnect(&imapc->pp);
|
|
Curl_dyn_free(&imapc->dyn);
|
|
|
|
/* Cleanup the SASL module */
|
|
Curl_sasl_cleanup(conn, imapc->sasl.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 Curl_easy *data, bool connected)
|
|
{
|
|
struct IMAP *imap = data->req.p.imap;
|
|
|
|
(void)connected;
|
|
|
|
if(imap->transfer != PPTRANSFER_BODY)
|
|
/* no data to transfer */
|
|
Curl_setup_transfer(data, -1, -1, FALSE, -1);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* Called from multi.c while DOing */
|
|
static CURLcode imap_doing(struct Curl_easy *data, bool *dophase_done)
|
|
{
|
|
CURLcode result = imap_multi_statemach(data, dophase_done);
|
|
|
|
if(result)
|
|
DEBUGF(infof(data, "DO phase failed"));
|
|
else if(*dophase_done) {
|
|
result = imap_dophase_done(data, FALSE /* not connected */);
|
|
|
|
DEBUGF(infof(data, "DO phase is complete"));
|
|
}
|
|
|
|
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 Curl_easy *data,
|
|
bool *dophase_done)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
bool connected = FALSE;
|
|
|
|
/* 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, -1);
|
|
Curl_pgrsSetDownloadSize(data, -1);
|
|
|
|
/* Carry out the perform */
|
|
result = imap_perform(data, &connected, dophase_done);
|
|
|
|
/* Perform post DO phase operations if necessary */
|
|
if(!result && *dophase_done)
|
|
result = imap_dophase_done(data, connected);
|
|
|
|
return result;
|
|
}
|
|
|
|
static CURLcode imap_setup_connection(struct Curl_easy *data,
|
|
struct connectdata *conn)
|
|
{
|
|
/* Initialise the IMAP layer */
|
|
CURLcode result = imap_init(data);
|
|
if(result)
|
|
return result;
|
|
|
|
/* Clear the TLS upgraded flag */
|
|
conn->bits.tls_upgraded = FALSE;
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_sendf()
|
|
*
|
|
* Sends the formatted string as an IMAP command to the server.
|
|
*
|
|
* Designed to never block.
|
|
*/
|
|
static CURLcode imap_sendf(struct Curl_easy *data, const char *fmt, ...)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct imap_conn *imapc = &data->conn->proto.imapc;
|
|
|
|
DEBUGASSERT(fmt);
|
|
|
|
/* Calculate the tag based on the connection ID and command ID */
|
|
msnprintf(imapc->resptag, sizeof(imapc->resptag), "%c%03d",
|
|
'A' + curlx_sltosi(data->conn->connection_id % 26),
|
|
(++imapc->cmdid)%1000);
|
|
|
|
/* start with a blank buffer */
|
|
Curl_dyn_reset(&imapc->dyn);
|
|
|
|
/* append tag + space + fmt */
|
|
result = Curl_dyn_addf(&imapc->dyn, "%s %s", imapc->resptag, fmt);
|
|
if(!result) {
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
result = Curl_pp_vsendf(data, &imapc->pp, Curl_dyn_ptr(&imapc->dyn), ap);
|
|
va_end(ap);
|
|
}
|
|
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, bool escape_only)
|
|
{
|
|
/* !checksrc! disable PARENBRACE 1 */
|
|
const char atom_specials[] = "(){ %*]";
|
|
const char *p1;
|
|
char *p2;
|
|
size_t backsp_count = 0;
|
|
size_t quote_count = 0;
|
|
bool others_exists = FALSE;
|
|
size_t newlen = 0;
|
|
char *newstr = NULL;
|
|
|
|
if(!str)
|
|
return NULL;
|
|
|
|
/* Look for "atom-specials", counting the backslash and quote characters as
|
|
these will need escaping */
|
|
p1 = str;
|
|
while(*p1) {
|
|
if(*p1 == '\\')
|
|
backsp_count++;
|
|
else if(*p1 == '"')
|
|
quote_count++;
|
|
else if(!escape_only) {
|
|
const char *p3 = atom_specials;
|
|
|
|
while(*p3 && !others_exists) {
|
|
if(*p1 == *p3)
|
|
others_exists = TRUE;
|
|
|
|
p3++;
|
|
}
|
|
}
|
|
|
|
p1++;
|
|
}
|
|
|
|
/* Does the input contain any "atom-special" characters? */
|
|
if(!backsp_count && !quote_count && !others_exists)
|
|
return strdup(str);
|
|
|
|
/* Calculate the new string length */
|
|
newlen = strlen(str) + backsp_count + quote_count + (escape_only ? 0 : 2);
|
|
|
|
/* 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(!escape_only) {
|
|
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 *ptr = conn->options;
|
|
|
|
while(!result && ptr && *ptr) {
|
|
const char *key = ptr;
|
|
const char *value;
|
|
|
|
while(*ptr && *ptr != '=')
|
|
ptr++;
|
|
|
|
value = ptr + 1;
|
|
|
|
while(*ptr && *ptr != ';')
|
|
ptr++;
|
|
|
|
if(strncasecompare(key, "AUTH=", 5))
|
|
result = Curl_sasl_parse_url_auth_option(&imapc->sasl,
|
|
value, ptr - value);
|
|
else
|
|
result = CURLE_URL_MALFORMAT;
|
|
|
|
if(*ptr == ';')
|
|
ptr++;
|
|
}
|
|
|
|
switch(imapc->sasl.prefmech) {
|
|
case SASL_AUTH_NONE:
|
|
imapc->preftype = IMAP_TYPE_NONE;
|
|
break;
|
|
case SASL_AUTH_DEFAULT:
|
|
imapc->preftype = IMAP_TYPE_ANY;
|
|
break;
|
|
default:
|
|
imapc->preftype = IMAP_TYPE_SASL;
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************
|
|
*
|
|
* imap_parse_url_path()
|
|
*
|
|
* Parse the URL path into separate path components.
|
|
*
|
|
*/
|
|
static CURLcode imap_parse_url_path(struct Curl_easy *data)
|
|
{
|
|
/* The imap struct is already initialised in imap_connect() */
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
const char *begin = &data->state.up.path[1]; /* skip leading slash */
|
|
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(begin, end - begin, &imap->mailbox, NULL,
|
|
REJECT_CTRL);
|
|
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(begin, ptr - begin, &name, NULL,
|
|
REJECT_CTRL);
|
|
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(begin, ptr - begin, &value, &valuelen,
|
|
REJECT_CTRL);
|
|
if(result) {
|
|
free(name);
|
|
return result;
|
|
}
|
|
|
|
DEBUGF(infof(data, "IMAP URL parameter '%s' = '%s'", name, value));
|
|
|
|
/* Process the known hierarchical parameters (UIDVALIDITY, UID, SECTION and
|
|
PARTIAL) stripping of the trailing slash character if it is present.
|
|
|
|
Note: Unknown parameters trigger a URL_MALFORMAT error. */
|
|
if(strcasecompare(name, "UIDVALIDITY") && !imap->uidvalidity) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->uidvalidity = value;
|
|
value = NULL;
|
|
}
|
|
else if(strcasecompare(name, "UID") && !imap->uid) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->uid = value;
|
|
value = NULL;
|
|
}
|
|
else if(strcasecompare(name, "MAILINDEX") && !imap->mindex) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->mindex = value;
|
|
value = NULL;
|
|
}
|
|
else if(strcasecompare(name, "SECTION") && !imap->section) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->section = value;
|
|
value = NULL;
|
|
}
|
|
else if(strcasecompare(name, "PARTIAL") && !imap->partial) {
|
|
if(valuelen > 0 && value[valuelen - 1] == '/')
|
|
value[valuelen - 1] = '\0';
|
|
|
|
imap->partial = value;
|
|
value = NULL;
|
|
}
|
|
else {
|
|
free(name);
|
|
free(value);
|
|
|
|
return CURLE_URL_MALFORMAT;
|
|
}
|
|
|
|
free(name);
|
|
free(value);
|
|
}
|
|
|
|
/* Does the URL contain a query parameter? Only valid when we have a mailbox
|
|
and no UID as per RFC-5092 */
|
|
if(imap->mailbox && !imap->uid && !imap->mindex) {
|
|
/* Get the query parameter, URL decoded */
|
|
(void)curl_url_get(data->state.uh, CURLUPART_QUERY, &imap->query,
|
|
CURLU_URLDECODE);
|
|
}
|
|
|
|
/* 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 Curl_easy *data)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
struct IMAP *imap = data->req.p.imap;
|
|
const char *custom = data->set.str[STRING_CUSTOMREQUEST];
|
|
|
|
if(custom) {
|
|
/* URL decode the custom request */
|
|
result = Curl_urldecode(custom, 0, &imap->custom, NULL, REJECT_CTRL);
|
|
|
|
/* 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 */
|