1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
81 #include "vtls/vtls.h"
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **userptr, char **passwdptr,
149 static CURLcode parse_login_details(const char *login, const size_t len,
150 char **userptr, char **passwdptr,
156 static const struct Curl_handler * const protocols[] = {
158 #ifndef CURL_DISABLE_HTTP
162 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
166 #ifndef CURL_DISABLE_FTP
170 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
174 #ifndef CURL_DISABLE_TELNET
175 &Curl_handler_telnet,
178 #ifndef CURL_DISABLE_DICT
182 #ifndef CURL_DISABLE_LDAP
184 #if !defined(CURL_DISABLE_LDAPS) && \
185 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
186 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
191 #ifndef CURL_DISABLE_FILE
195 #ifndef CURL_DISABLE_TFTP
204 #ifndef CURL_DISABLE_IMAP
211 #ifndef CURL_DISABLE_POP3
218 #ifndef CURL_DISABLE_SMTP
225 #ifndef CURL_DISABLE_RTSP
229 #ifndef CURL_DISABLE_GOPHER
230 &Curl_handler_gopher,
237 &Curl_handler_rtmpte,
239 &Curl_handler_rtmpts,
242 (struct Curl_handler *) NULL
246 * Dummy handler for undefined protocol schemes.
249 static const struct Curl_handler Curl_handler_dummy = {
250 "<no protocol>", /* scheme */
251 ZERO_NULL, /* setup_connection */
252 ZERO_NULL, /* do_it */
253 ZERO_NULL, /* done */
254 ZERO_NULL, /* do_more */
255 ZERO_NULL, /* connect_it */
256 ZERO_NULL, /* connecting */
257 ZERO_NULL, /* doing */
258 ZERO_NULL, /* proto_getsock */
259 ZERO_NULL, /* doing_getsock */
260 ZERO_NULL, /* domore_getsock */
261 ZERO_NULL, /* perform_getsock */
262 ZERO_NULL, /* disconnect */
263 ZERO_NULL, /* readwrite */
266 PROTOPT_NONE /* flags */
269 void Curl_freeset(struct SessionHandle *data)
271 /* Free all dynamic strings stored in the data->set substructure. */
273 for(i=(enum dupstring)0; i < STRING_LAST; i++)
274 Curl_safefree(data->set.str[i]);
276 if(data->change.referer_alloc) {
277 Curl_safefree(data->change.referer);
278 data->change.referer_alloc = FALSE;
280 data->change.referer = NULL;
283 static CURLcode setstropt(char **charp, char *s)
285 /* Release the previous storage at `charp' and replace by a dynamic storage
286 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
288 Curl_safefree(*charp);
294 return CURLE_OUT_OF_MEMORY;
302 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
304 CURLcode result = CURLE_OK;
308 /* Parse the login details if specified. It not then we treat NULL as a hint
309 to clear the existing data */
311 result = parse_login_details(option, strlen(option),
312 (userp ? &user : NULL),
313 (passwdp ? &passwd : NULL),
318 /* Store the username part of option if required */
320 if(!user && option && option[0] == ':') {
321 /* Allocate an empty string instead of returning NULL as user name */
324 result = CURLE_OUT_OF_MEMORY;
327 Curl_safefree(*userp);
331 /* Store the password part of option if required */
333 Curl_safefree(*passwdp);
341 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
343 CURLcode r = CURLE_OK;
346 /* Copy src->set into dst->set first, then deal with the strings
350 /* clear all string pointers first */
351 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
353 /* duplicate all strings */
354 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
355 r = setstropt(&dst->set.str[i], src->set.str[i]);
360 /* If a failure occurred, freeing has to be performed externally. */
365 * This is the internal function curl_easy_cleanup() calls. This should
366 * cleanup and free all resources associated with this sessionhandle.
368 * NOTE: if we ever add something that attempts to write to a socket or
369 * similar here, we must ignore SIGPIPE first. It is currently only done
370 * when curl_easy_perform() is invoked.
373 CURLcode Curl_close(struct SessionHandle *data)
375 struct Curl_multi *m;
380 Curl_expire(data, 0); /* shut off timers */
385 /* This handle is still part of a multi handle, take care of this first
386 and detach this handle from there. */
387 curl_multi_remove_handle(data->multi, data);
390 /* when curl_easy_perform() is used, it creates its own multi handle to
391 use and this is the one */
392 curl_multi_cleanup(data->multi_easy);
394 /* Destroy the timeout list that is held in the easy handle. It is
395 /normally/ done by curl_multi_remove_handle() but this is "just in
397 if(data->state.timeoutlist) {
398 Curl_llist_destroy(data->state.timeoutlist, NULL);
399 data->state.timeoutlist = NULL;
402 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
403 the multi handle, since that function uses the magic
406 if(data->state.rangestringalloc)
407 free(data->state.range);
409 /* Free the pathbuffer */
410 Curl_safefree(data->state.pathbuffer);
411 data->state.path = NULL;
413 /* freed here just in case DONE wasn't called */
414 Curl_free_request_state(data);
416 /* Close down all open SSL info and sessions */
417 Curl_ssl_close_all(data);
418 Curl_safefree(data->state.first_host);
419 Curl_safefree(data->state.scratch);
420 Curl_ssl_free_certinfo(data);
422 if(data->change.referer_alloc) {
423 Curl_safefree(data->change.referer);
424 data->change.referer_alloc = FALSE;
426 data->change.referer = NULL;
428 if(data->change.url_alloc) {
429 Curl_safefree(data->change.url);
430 data->change.url_alloc = FALSE;
432 data->change.url = NULL;
434 Curl_safefree(data->state.headerbuff);
436 Curl_flush_cookies(data, 1);
438 Curl_digest_cleanup(data);
440 Curl_safefree(data->info.contenttype);
441 Curl_safefree(data->info.wouldredirect);
443 /* this destroys the channel and we cannot use it anymore after this */
444 Curl_resolver_cleanup(data->state.resolver);
446 Curl_convert_close(data);
448 /* No longer a dirty share, if it exists */
450 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
451 data->share->dirty--;
452 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
461 * Initialize the UserDefined fields within a SessionHandle.
462 * This may be safely called on a new or existing SessionHandle.
464 CURLcode Curl_init_userdefined(struct UserDefined *set)
466 CURLcode res = CURLE_OK;
468 set->out = stdout; /* default output to stdout */
469 set->in = stdin; /* default input from stdin */
470 set->err = stderr; /* default stderr to stderr */
472 /* use fwrite as default function to store output */
473 set->fwrite_func = (curl_write_callback)fwrite;
475 /* use fread as default function to read input */
476 set->fread_func = (curl_read_callback)fread;
477 set->is_fread_set = 0;
478 set->is_fwrite_set = 0;
480 set->seek_func = ZERO_NULL;
481 set->seek_client = ZERO_NULL;
483 /* conversion callbacks for non-ASCII hosts */
484 set->convfromnetwork = ZERO_NULL;
485 set->convtonetwork = ZERO_NULL;
486 set->convfromutf8 = ZERO_NULL;
488 set->infilesize = -1; /* we don't know any size */
489 set->postfieldsize = -1; /* unknown size */
490 set->maxredirs = -1; /* allow any amount by default */
492 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
493 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
494 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
495 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
496 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
497 set->ftp_filemethod = FTPFILE_MULTICWD;
499 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
501 /* Set the default size of the SSL session ID cache */
502 set->ssl.max_ssl_sessions = 5;
504 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
505 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
506 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
507 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
509 /* make libcurl quiet by default: */
510 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
513 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
514 * switched off unless wanted.
516 set->ssl.verifypeer = TRUE;
517 set->ssl.verifyhost = TRUE;
519 set->ssl.authtype = CURL_TLSAUTH_NONE;
521 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
523 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
525 set->new_file_perms = 0644; /* Default permissions */
526 set->new_directory_perms = 0755; /* Default permissions */
528 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
529 define since we internally only use the lower 16 bits for the passed
530 in bitmask to not conflict with the private bits */
531 set->allowed_protocols = CURLPROTO_ALL;
532 set->redir_protocols =
533 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
535 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
537 * disallow unprotected protection negotiation NEC reference implementation
538 * seem not to follow rfc1961 section 4.3/4.4
540 set->socks5_gssapi_nec = FALSE;
541 /* set default gssapi service name */
542 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
543 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
548 /* This is our preferred CA cert bundle/path since install time */
549 #if defined(CURL_CA_BUNDLE)
550 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
551 #elif defined(CURL_CA_PATH)
552 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
555 set->wildcardmatch = FALSE;
556 set->chunk_bgn = ZERO_NULL;
557 set->chunk_end = ZERO_NULL;
559 /* tcp keepalives are disabled by default, but provide reasonable values for
560 * the interval and idle times.
562 set->tcp_keepalive = FALSE;
563 set->tcp_keepintvl = 60;
564 set->tcp_keepidle = 60;
566 set->ssl_enable_npn = TRUE;
567 set->ssl_enable_alpn = TRUE;
574 * @param curl is a pointer to a sessionhandle pointer that gets set by this
579 CURLcode Curl_open(struct SessionHandle **curl)
581 CURLcode res = CURLE_OK;
582 struct SessionHandle *data;
585 /* Very simple start-up: alloc the struct, init it with zeroes and return */
586 data = calloc(1, sizeof(struct SessionHandle));
588 /* this is a very serious error */
589 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
590 return CURLE_OUT_OF_MEMORY;
593 data->magic = CURLEASY_MAGIC_NUMBER;
595 status = Curl_resolver_init(&data->state.resolver);
597 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
602 /* We do some initial setup here, all those fields that can't be just 0 */
604 data->state.headerbuff = malloc(HEADERSIZE);
605 if(!data->state.headerbuff) {
606 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
607 res = CURLE_OUT_OF_MEMORY;
610 res = Curl_init_userdefined(&data->set);
612 data->state.headersize=HEADERSIZE;
614 Curl_convert_init(data);
616 /* most recent connection is not yet defined */
617 data->state.lastconnect = NULL;
619 data->progress.flags |= PGRS_HIDE;
620 data->state.current_speed = -1; /* init to negative == impossible */
622 data->wildcard.state = CURLWC_INIT;
623 data->wildcard.filelist = NULL;
624 data->set.fnmatch = ZERO_NULL;
625 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
629 Curl_resolver_cleanup(data->state.resolver);
630 if(data->state.headerbuff)
631 free(data->state.headerbuff);
642 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
646 CURLcode result = CURLE_OK;
648 #ifndef CURL_DISABLE_HTTP
653 case CURLOPT_DNS_CACHE_TIMEOUT:
654 data->set.dns_cache_timeout = va_arg(param, long);
656 case CURLOPT_DNS_USE_GLOBAL_CACHE:
657 /* remember we want this enabled */
658 arg = va_arg(param, long);
659 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
661 case CURLOPT_SSL_CIPHER_LIST:
662 /* set a list of cipher we want to use in the SSL connection */
663 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
664 va_arg(param, char *));
667 case CURLOPT_RANDOM_FILE:
669 * This is the path name to a file that contains random data to seed
670 * the random SSL stuff with. The file is only used for reading.
672 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
673 va_arg(param, char *));
675 case CURLOPT_EGDSOCKET:
677 * The Entropy Gathering Daemon socket pathname
679 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
680 va_arg(param, char *));
682 case CURLOPT_MAXCONNECTS:
684 * Set the absolute number of maximum simultaneous alive connection that
685 * libcurl is allowed to have.
687 data->set.maxconnects = va_arg(param, long);
689 case CURLOPT_FORBID_REUSE:
691 * When this transfer is done, it must not be left to be reused by a
692 * subsequent transfer but shall be closed immediately.
694 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
696 case CURLOPT_FRESH_CONNECT:
698 * This transfer shall not use a previously cached connection but
699 * should be made with a fresh new connect!
701 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
703 case CURLOPT_VERBOSE:
705 * Verbose means infof() calls that give a lot of information about
706 * the connection and transfer procedures as well as internal choices.
708 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
712 * Set to include the header in the general data output stream.
714 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
716 case CURLOPT_NOPROGRESS:
718 * Shut off the internal supported progress meter
720 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
721 if(data->set.hide_progress)
722 data->progress.flags |= PGRS_HIDE;
724 data->progress.flags &= ~PGRS_HIDE;
728 * Do not include the body part in the output data stream.
730 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
732 case CURLOPT_FAILONERROR:
734 * Don't output the >=300 error code HTML-page, but instead only
737 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
742 * We want to sent data to the remote host. If this is HTTP, that equals
743 * using the PUT request.
745 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
746 if(data->set.upload) {
747 /* If this is HTTP, PUT is what's needed to "upload" */
748 data->set.httpreq = HTTPREQ_PUT;
749 data->set.opt_no_body = FALSE; /* this is implied */
752 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
753 then this can be changed to HEAD later on) */
754 data->set.httpreq = HTTPREQ_GET;
756 case CURLOPT_FILETIME:
758 * Try to get the file time of the remote document. The time will
759 * later (possibly) become available using curl_easy_getinfo().
761 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
763 case CURLOPT_FTP_CREATE_MISSING_DIRS:
765 * An FTP option that modifies an upload to create missing directories on
768 switch(va_arg(param, long)) {
770 data->set.ftp_create_missing_dirs = 0;
773 data->set.ftp_create_missing_dirs = 1;
776 data->set.ftp_create_missing_dirs = 2;
779 /* reserve other values for future use */
780 result = CURLE_UNKNOWN_OPTION;
784 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
786 * Option that specifies how quickly an server response must be obtained
787 * before it is considered failure. For pingpong protocols.
789 data->set.server_response_timeout = va_arg( param , long ) * 1000;
791 case CURLOPT_TFTP_BLKSIZE:
793 * TFTP option that specifies the block size to use for data transmission
795 data->set.tftp_blksize = va_arg(param, long);
797 case CURLOPT_DIRLISTONLY:
799 * An option that changes the command to one that asks for a list
800 * only, no file info details.
802 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
806 * We want to upload and append to an existing file.
808 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
810 case CURLOPT_FTP_FILEMETHOD:
812 * How do access files over FTP.
814 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
818 * Parse the $HOME/.netrc file
820 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
822 case CURLOPT_NETRC_FILE:
824 * Use this file instead of the $HOME/.netrc file
826 result = setstropt(&data->set.str[STRING_NETRC_FILE],
827 va_arg(param, char *));
829 case CURLOPT_TRANSFERTEXT:
831 * This option was previously named 'FTPASCII'. Renamed to work with
832 * more protocols than merely FTP.
834 * Transfer using ASCII (instead of BINARY).
836 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
838 case CURLOPT_TIMECONDITION:
840 * Set HTTP time condition. This must be one of the defines in the
841 * curl/curl.h header file.
843 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
845 case CURLOPT_TIMEVALUE:
847 * This is the value to compare with the remote document with the
848 * method set with CURLOPT_TIMECONDITION
850 data->set.timevalue = (time_t)va_arg(param, long);
852 case CURLOPT_SSLVERSION:
854 * Set explicit SSL version to try to connect with, as some SSL
855 * implementations are lame.
857 data->set.ssl.version = va_arg(param, long);
860 #ifndef CURL_DISABLE_HTTP
861 case CURLOPT_AUTOREFERER:
863 * Switch on automatic referer that gets set if curl follows locations.
865 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
868 case CURLOPT_ACCEPT_ENCODING:
870 * String to use at the value of Accept-Encoding header.
872 * If the encoding is set to "" we use an Accept-Encoding header that
873 * encompasses all the encodings we support.
874 * If the encoding is set to NULL we don't send an Accept-Encoding header
875 * and ignore an received Content-Encoding header.
878 argptr = va_arg(param, char *);
879 result = setstropt(&data->set.str[STRING_ENCODING],
880 (argptr && !*argptr)?
881 (char *) ALL_CONTENT_ENCODINGS: argptr);
884 case CURLOPT_TRANSFER_ENCODING:
885 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
888 case CURLOPT_FOLLOWLOCATION:
890 * Follow Location: header hints on a HTTP-server.
892 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
895 case CURLOPT_UNRESTRICTED_AUTH:
897 * Send authentication (user+password) when following locations, even when
900 data->set.http_disable_hostname_check_before_authentication =
901 (0 != va_arg(param, long))?TRUE:FALSE;
904 case CURLOPT_MAXREDIRS:
906 * The maximum amount of hops you allow curl to follow Location:
907 * headers. This should mostly be used to detect never-ending loops.
909 data->set.maxredirs = va_arg(param, long);
912 case CURLOPT_POSTREDIR:
915 * Set the behaviour of POST when redirecting
916 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
917 * CURL_REDIR_POST_301 - POST is kept as POST after 301
918 * CURL_REDIR_POST_302 - POST is kept as POST after 302
919 * CURL_REDIR_POST_303 - POST is kept as POST after 303
920 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
921 * other - POST is kept as POST after 301 and 302
923 int postRedir = curlx_sltosi(va_arg(param, long));
924 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
929 /* Does this option serve a purpose anymore? Yes it does, when
930 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
932 if(va_arg(param, long)) {
933 data->set.httpreq = HTTPREQ_POST;
934 data->set.opt_no_body = FALSE; /* this is implied */
937 data->set.httpreq = HTTPREQ_GET;
940 case CURLOPT_COPYPOSTFIELDS:
942 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
943 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
944 * CURLOPT_COPYPOSTFIELDS and not altered later.
946 argptr = va_arg(param, char *);
948 if(!argptr || data->set.postfieldsize == -1)
949 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
952 * Check that requested length does not overflow the size_t type.
955 if((data->set.postfieldsize < 0) ||
956 ((sizeof(curl_off_t) != sizeof(size_t)) &&
957 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
958 result = CURLE_OUT_OF_MEMORY;
962 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
964 /* Allocate even when size == 0. This satisfies the need of possible
965 later address compare to detect the COPYPOSTFIELDS mode, and
966 to mark that postfields is used rather than read function or
969 p = malloc((size_t)(data->set.postfieldsize?
970 data->set.postfieldsize:1));
973 result = CURLE_OUT_OF_MEMORY;
975 if(data->set.postfieldsize)
976 memcpy(p, argptr, (size_t)data->set.postfieldsize);
978 data->set.str[STRING_COPYPOSTFIELDS] = p;
983 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
984 data->set.httpreq = HTTPREQ_POST;
987 case CURLOPT_POSTFIELDS:
989 * Like above, but use static data instead of copying it.
991 data->set.postfields = va_arg(param, void *);
992 /* Release old copied data. */
993 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
994 data->set.httpreq = HTTPREQ_POST;
997 case CURLOPT_POSTFIELDSIZE:
999 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1000 * figure it out. Enables binary posts.
1002 bigsize = va_arg(param, long);
1004 if(data->set.postfieldsize < bigsize &&
1005 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1006 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1007 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1008 data->set.postfields = NULL;
1011 data->set.postfieldsize = bigsize;
1014 case CURLOPT_POSTFIELDSIZE_LARGE:
1016 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1017 * figure it out. Enables binary posts.
1019 bigsize = va_arg(param, curl_off_t);
1021 if(data->set.postfieldsize < bigsize &&
1022 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1023 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1024 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1025 data->set.postfields = NULL;
1028 data->set.postfieldsize = bigsize;
1031 case CURLOPT_HTTPPOST:
1033 * Set to make us do HTTP POST
1035 data->set.httppost = va_arg(param, struct curl_httppost *);
1036 data->set.httpreq = HTTPREQ_POST_FORM;
1037 data->set.opt_no_body = FALSE; /* this is implied */
1040 case CURLOPT_REFERER:
1042 * String to set in the HTTP Referer: field.
1044 if(data->change.referer_alloc) {
1045 Curl_safefree(data->change.referer);
1046 data->change.referer_alloc = FALSE;
1048 result = setstropt(&data->set.str[STRING_SET_REFERER],
1049 va_arg(param, char *));
1050 data->change.referer = data->set.str[STRING_SET_REFERER];
1053 case CURLOPT_USERAGENT:
1055 * String to use in the HTTP User-Agent field
1057 result = setstropt(&data->set.str[STRING_USERAGENT],
1058 va_arg(param, char *));
1061 case CURLOPT_HTTPHEADER:
1063 * Set a list with HTTP headers to use (or replace internals with)
1065 data->set.headers = va_arg(param, struct curl_slist *);
1068 case CURLOPT_HTTP200ALIASES:
1070 * Set a list of aliases for HTTP 200 in response header
1072 data->set.http200aliases = va_arg(param, struct curl_slist *);
1075 #if !defined(CURL_DISABLE_COOKIES)
1076 case CURLOPT_COOKIE:
1078 * Cookie string to send to the remote server in the request.
1080 result = setstropt(&data->set.str[STRING_COOKIE],
1081 va_arg(param, char *));
1084 case CURLOPT_COOKIEFILE:
1086 * Set cookie file to read and parse. Can be used multiple times.
1088 argptr = (char *)va_arg(param, void *);
1090 struct curl_slist *cl;
1091 /* append the cookie file name to the list of file names, and deal with
1093 cl = curl_slist_append(data->change.cookielist, argptr);
1095 curl_slist_free_all(data->change.cookielist);
1096 data->change.cookielist = NULL;
1097 return CURLE_OUT_OF_MEMORY;
1099 data->change.cookielist = cl; /* store the list for later use */
1103 case CURLOPT_COOKIEJAR:
1105 * Set cookie file name to dump all cookies to when we're done.
1107 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1108 va_arg(param, char *));
1111 * Activate the cookie parser. This may or may not already
1114 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1115 data->set.cookiesession);
1118 case CURLOPT_COOKIESESSION:
1120 * Set this option to TRUE to start a new "cookie session". It will
1121 * prevent the forthcoming read-cookies-from-file actions to accept
1122 * cookies that are marked as being session cookies, as they belong to a
1125 * In the original Netscape cookie spec, "session cookies" are cookies
1126 * with no expire date set. RFC2109 describes the same action if no
1127 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1128 * a 'Discard' action that can enforce the discard even for cookies that
1131 * We run mostly with the original cookie spec, as hardly anyone implements
1134 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1137 case CURLOPT_COOKIELIST:
1138 argptr = va_arg(param, char *);
1143 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1145 if(Curl_raw_equal(argptr, "ALL")) {
1146 /* clear all cookies */
1147 Curl_cookie_clearall(data->cookies);
1149 else if(Curl_raw_equal(argptr, "SESS")) {
1150 /* clear session cookies */
1151 Curl_cookie_clearsess(data->cookies);
1153 else if(Curl_raw_equal(argptr, "FLUSH")) {
1154 /* flush cookies to file */
1155 Curl_flush_cookies(data, 0);
1159 /* if cookie engine was not running, activate it */
1160 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1162 argptr = strdup(argptr);
1164 result = CURLE_OUT_OF_MEMORY;
1168 if(checkprefix("Set-Cookie:", argptr))
1169 /* HTTP Header format line */
1170 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1173 /* Netscape format line */
1174 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1179 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1182 #endif /* CURL_DISABLE_COOKIES */
1184 case CURLOPT_HTTPGET:
1186 * Set to force us do HTTP GET
1188 if(va_arg(param, long)) {
1189 data->set.httpreq = HTTPREQ_GET;
1190 data->set.upload = FALSE; /* switch off upload */
1191 data->set.opt_no_body = FALSE; /* this is implied */
1195 case CURLOPT_HTTP_VERSION:
1197 * This sets a requested HTTP version to be used. The value is one of
1198 * the listed enums in curl/curl.h.
1200 arg = va_arg(param, long);
1202 if(arg == CURL_HTTP_VERSION_2_0)
1203 return CURLE_UNSUPPORTED_PROTOCOL;
1205 data->set.httpversion = arg;
1208 case CURLOPT_HTTPAUTH:
1210 * Set HTTP Authentication type BITMASK.
1215 unsigned long auth = va_arg(param, unsigned long);
1217 if(auth == CURLAUTH_NONE) {
1218 data->set.httpauth = auth;
1222 /* the DIGEST_IE bit is only used to set a special marker, for all the
1223 rest we need to handle it as normal DIGEST */
1224 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1226 if(auth & CURLAUTH_DIGEST_IE) {
1227 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1228 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1231 /* switch off bits we can't support */
1233 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1234 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1235 #elif !defined(NTLM_WB_ENABLED)
1236 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1238 #ifndef USE_HTTP_NEGOTIATE
1239 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1243 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1246 while(bitcheck < 31) {
1247 if(auth & (1UL << bitcheck++)) {
1253 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1255 data->set.httpauth = auth;
1259 #endif /* CURL_DISABLE_HTTP */
1261 case CURLOPT_CUSTOMREQUEST:
1263 * Set a custom string to use as request
1265 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1266 va_arg(param, char *));
1269 data->set.httpreq = HTTPREQ_CUSTOM;
1270 here, we continue as if we were using the already set type
1271 and this just changes the actual request keyword */
1274 #ifndef CURL_DISABLE_PROXY
1275 case CURLOPT_HTTPPROXYTUNNEL:
1277 * Tunnel operations through the proxy instead of normal proxy use
1279 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1282 case CURLOPT_PROXYPORT:
1284 * Explicitly set HTTP proxy port number.
1286 data->set.proxyport = va_arg(param, long);
1289 case CURLOPT_PROXYAUTH:
1291 * Set HTTP Authentication type BITMASK.
1296 unsigned long auth = va_arg(param, unsigned long);
1298 if(auth == CURLAUTH_NONE) {
1299 data->set.proxyauth = auth;
1303 /* the DIGEST_IE bit is only used to set a special marker, for all the
1304 rest we need to handle it as normal DIGEST */
1305 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1307 if(auth & CURLAUTH_DIGEST_IE) {
1308 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1309 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1311 /* switch off bits we can't support */
1313 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1314 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1315 #elif !defined(NTLM_WB_ENABLED)
1316 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1318 #ifndef USE_HTTP_NEGOTIATE
1319 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1323 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1326 while(bitcheck < 31) {
1327 if(auth & (1UL << bitcheck++)) {
1333 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1335 data->set.proxyauth = auth;
1341 * Set proxy server:port to use as HTTP proxy.
1343 * If the proxy is set to "" we explicitly say that we don't want to use a
1344 * proxy (even though there might be environment variables saying so).
1346 * Setting it to NULL, means no proxy but allows the environment variables
1349 result = setstropt(&data->set.str[STRING_PROXY],
1350 va_arg(param, char *));
1353 case CURLOPT_PROXYTYPE:
1355 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1357 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1360 case CURLOPT_PROXY_TRANSFER_MODE:
1362 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1364 switch (va_arg(param, long)) {
1366 data->set.proxy_transfer_mode = FALSE;
1369 data->set.proxy_transfer_mode = TRUE;
1372 /* reserve other values for future use */
1373 result = CURLE_UNKNOWN_OPTION;
1377 #endif /* CURL_DISABLE_PROXY */
1379 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1380 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1382 * Set gssapi service name
1384 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1385 va_arg(param, char *));
1388 case CURLOPT_SOCKS5_GSSAPI_NEC:
1390 * set flag for nec socks5 support
1392 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1396 case CURLOPT_WRITEHEADER:
1398 * Custom pointer to pass the header write callback function
1400 data->set.writeheader = (void *)va_arg(param, void *);
1402 case CURLOPT_ERRORBUFFER:
1404 * Error buffer provided by the caller to get the human readable
1407 data->set.errorbuffer = va_arg(param, char *);
1411 * FILE pointer to write to. Or possibly
1412 * used as argument to the write callback.
1414 data->set.out = va_arg(param, void *);
1416 case CURLOPT_FTPPORT:
1418 * Use FTP PORT, this also specifies which IP address to use
1420 result = setstropt(&data->set.str[STRING_FTPPORT],
1421 va_arg(param, char *));
1422 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1426 case CURLOPT_FTP_USE_EPRT:
1427 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1430 case CURLOPT_FTP_USE_EPSV:
1431 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1434 case CURLOPT_FTP_USE_PRET:
1435 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1438 case CURLOPT_FTP_SSL_CCC:
1439 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1442 case CURLOPT_FTP_SKIP_PASV_IP:
1444 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1445 * bypass of the IP address in PASV responses.
1447 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1450 case CURLOPT_INFILE:
1452 * FILE pointer to read the file to be uploaded from. Or possibly
1453 * used as argument to the read callback.
1455 data->set.in = va_arg(param, void *);
1457 case CURLOPT_INFILESIZE:
1459 * If known, this should inform curl about the file size of the
1460 * to-be-uploaded file.
1462 data->set.infilesize = va_arg(param, long);
1464 case CURLOPT_INFILESIZE_LARGE:
1466 * If known, this should inform curl about the file size of the
1467 * to-be-uploaded file.
1469 data->set.infilesize = va_arg(param, curl_off_t);
1471 case CURLOPT_LOW_SPEED_LIMIT:
1473 * The low speed limit that if transfers are below this for
1474 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1476 data->set.low_speed_limit=va_arg(param, long);
1478 case CURLOPT_MAX_SEND_SPEED_LARGE:
1480 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1481 * bytes per second the transfer is throttled..
1483 data->set.max_send_speed=va_arg(param, curl_off_t);
1485 case CURLOPT_MAX_RECV_SPEED_LARGE:
1487 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1488 * second the transfer is throttled..
1490 data->set.max_recv_speed=va_arg(param, curl_off_t);
1492 case CURLOPT_LOW_SPEED_TIME:
1494 * The low speed time that if transfers are below the set
1495 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1497 data->set.low_speed_time=va_arg(param, long);
1503 if(data->change.url_alloc) {
1504 /* the already set URL is allocated, free it first! */
1505 Curl_safefree(data->change.url);
1506 data->change.url_alloc = FALSE;
1508 result = setstropt(&data->set.str[STRING_SET_URL],
1509 va_arg(param, char *));
1510 data->change.url = data->set.str[STRING_SET_URL];
1514 * The port number to use when getting the URL
1516 data->set.use_port = va_arg(param, long);
1518 case CURLOPT_TIMEOUT:
1520 * The maximum time you allow curl to use for a single transfer
1523 data->set.timeout = va_arg(param, long) * 1000L;
1526 case CURLOPT_TIMEOUT_MS:
1527 data->set.timeout = va_arg(param, long);
1530 case CURLOPT_CONNECTTIMEOUT:
1532 * The maximum time you allow curl to use to connect.
1534 data->set.connecttimeout = va_arg(param, long) * 1000L;
1537 case CURLOPT_CONNECTTIMEOUT_MS:
1538 data->set.connecttimeout = va_arg(param, long);
1541 case CURLOPT_ACCEPTTIMEOUT_MS:
1543 * The maximum time you allow curl to wait for server connect
1545 data->set.accepttimeout = va_arg(param, long);
1548 case CURLOPT_USERPWD:
1550 * user:password to use in the operation
1552 result = setstropt_userpwd(va_arg(param, char *),
1553 &data->set.str[STRING_USERNAME],
1554 &data->set.str[STRING_PASSWORD]);
1557 case CURLOPT_USERNAME:
1559 * authentication user name to use in the operation
1561 result = setstropt(&data->set.str[STRING_USERNAME],
1562 va_arg(param, char *));
1565 case CURLOPT_PASSWORD:
1567 * authentication password to use in the operation
1569 result = setstropt(&data->set.str[STRING_PASSWORD],
1570 va_arg(param, char *));
1573 case CURLOPT_LOGIN_OPTIONS:
1575 * authentication options to use in the operation
1577 result = setstropt(&data->set.str[STRING_OPTIONS],
1578 va_arg(param, char *));
1581 case CURLOPT_XOAUTH2_BEARER:
1583 * XOAUTH2 bearer token to use in the operation
1585 result = setstropt(&data->set.str[STRING_BEARER],
1586 va_arg(param, char *));
1589 case CURLOPT_POSTQUOTE:
1591 * List of RAW FTP commands to use after a transfer
1593 data->set.postquote = va_arg(param, struct curl_slist *);
1595 case CURLOPT_PREQUOTE:
1597 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1599 data->set.prequote = va_arg(param, struct curl_slist *);
1603 * List of RAW FTP commands to use before a transfer
1605 data->set.quote = va_arg(param, struct curl_slist *);
1607 case CURLOPT_RESOLVE:
1609 * List of NAME:[address] names to populate the DNS cache with
1610 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1612 * Names added with this API will remain in the cache until explicitly
1613 * removed or the handle is cleaned up.
1615 * This API can remove any name from the DNS cache, but only entries
1616 * that aren't actually in use right now will be pruned immediately.
1618 data->set.resolve = va_arg(param, struct curl_slist *);
1619 data->change.resolve = data->set.resolve;
1621 case CURLOPT_PROGRESSFUNCTION:
1623 * Progress callback function
1625 data->set.fprogress = va_arg(param, curl_progress_callback);
1626 if(data->set.fprogress)
1627 data->progress.callback = TRUE; /* no longer internal */
1629 data->progress.callback = FALSE; /* NULL enforces internal */
1632 case CURLOPT_XFERINFOFUNCTION:
1634 * Transfer info callback function
1636 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1637 if(data->set.fxferinfo)
1638 data->progress.callback = TRUE; /* no longer internal */
1640 data->progress.callback = FALSE; /* NULL enforces internal */
1644 case CURLOPT_PROGRESSDATA:
1646 * Custom client data to pass to the progress callback
1648 data->set.progress_client = va_arg(param, void *);
1651 #ifndef CURL_DISABLE_PROXY
1652 case CURLOPT_PROXYUSERPWD:
1654 * user:password needed to use the proxy
1656 result = setstropt_userpwd(va_arg(param, char *),
1657 &data->set.str[STRING_PROXYUSERNAME],
1658 &data->set.str[STRING_PROXYPASSWORD]);
1660 case CURLOPT_PROXYUSERNAME:
1662 * authentication user name to use in the operation
1664 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1665 va_arg(param, char *));
1667 case CURLOPT_PROXYPASSWORD:
1669 * authentication password to use in the operation
1671 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1672 va_arg(param, char *));
1674 case CURLOPT_NOPROXY:
1676 * proxy exception list
1678 result = setstropt(&data->set.str[STRING_NOPROXY],
1679 va_arg(param, char *));
1685 * What range of the file you want to transfer
1687 result = setstropt(&data->set.str[STRING_SET_RANGE],
1688 va_arg(param, char *));
1690 case CURLOPT_RESUME_FROM:
1692 * Resume transfer at the give file position
1694 data->set.set_resume_from = va_arg(param, long);
1696 case CURLOPT_RESUME_FROM_LARGE:
1698 * Resume transfer at the give file position
1700 data->set.set_resume_from = va_arg(param, curl_off_t);
1702 case CURLOPT_DEBUGFUNCTION:
1704 * stderr write callback.
1706 data->set.fdebug = va_arg(param, curl_debug_callback);
1708 * if the callback provided is NULL, it'll use the default callback
1711 case CURLOPT_DEBUGDATA:
1713 * Set to a void * that should receive all error writes. This
1714 * defaults to CURLOPT_STDERR for normal operations.
1716 data->set.debugdata = va_arg(param, void *);
1718 case CURLOPT_STDERR:
1720 * Set to a FILE * that should receive all error writes. This
1721 * defaults to stderr for normal operations.
1723 data->set.err = va_arg(param, FILE *);
1725 data->set.err = stderr;
1727 case CURLOPT_HEADERFUNCTION:
1729 * Set header write callback
1731 data->set.fwrite_header = va_arg(param, curl_write_callback);
1733 case CURLOPT_WRITEFUNCTION:
1735 * Set data write callback
1737 data->set.fwrite_func = va_arg(param, curl_write_callback);
1738 if(!data->set.fwrite_func) {
1739 data->set.is_fwrite_set = 0;
1740 /* When set to NULL, reset to our internal default function */
1741 data->set.fwrite_func = (curl_write_callback)fwrite;
1744 data->set.is_fwrite_set = 1;
1746 case CURLOPT_READFUNCTION:
1748 * Read data callback
1750 data->set.fread_func = va_arg(param, curl_read_callback);
1751 if(!data->set.fread_func) {
1752 data->set.is_fread_set = 0;
1753 /* When set to NULL, reset to our internal default function */
1754 data->set.fread_func = (curl_read_callback)fread;
1757 data->set.is_fread_set = 1;
1759 case CURLOPT_SEEKFUNCTION:
1761 * Seek callback. Might be NULL.
1763 data->set.seek_func = va_arg(param, curl_seek_callback);
1765 case CURLOPT_SEEKDATA:
1767 * Seek control callback. Might be NULL.
1769 data->set.seek_client = va_arg(param, void *);
1771 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1773 * "Convert from network encoding" callback
1775 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1777 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1779 * "Convert to network encoding" callback
1781 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1783 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1785 * "Convert from UTF-8 encoding" callback
1787 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1789 case CURLOPT_IOCTLFUNCTION:
1791 * I/O control callback. Might be NULL.
1793 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1795 case CURLOPT_IOCTLDATA:
1797 * I/O control data pointer. Might be NULL.
1799 data->set.ioctl_client = va_arg(param, void *);
1801 case CURLOPT_SSLCERT:
1803 * String that holds file name of the SSL certificate to use
1805 result = setstropt(&data->set.str[STRING_CERT],
1806 va_arg(param, char *));
1808 case CURLOPT_SSLCERTTYPE:
1810 * String that holds file type of the SSL certificate to use
1812 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1813 va_arg(param, char *));
1815 case CURLOPT_SSLKEY:
1817 * String that holds file name of the SSL key to use
1819 result = setstropt(&data->set.str[STRING_KEY],
1820 va_arg(param, char *));
1822 case CURLOPT_SSLKEYTYPE:
1824 * String that holds file type of the SSL key to use
1826 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1827 va_arg(param, char *));
1829 case CURLOPT_KEYPASSWD:
1831 * String that holds the SSL or SSH private key password.
1833 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1834 va_arg(param, char *));
1836 case CURLOPT_SSLENGINE:
1838 * String that holds the SSL crypto engine.
1840 argptr = va_arg(param, char *);
1841 if(argptr && argptr[0])
1842 result = Curl_ssl_set_engine(data, argptr);
1845 case CURLOPT_SSLENGINE_DEFAULT:
1847 * flag to set engine as default.
1849 result = Curl_ssl_set_engine_default(data);
1853 * Kludgy option to enable CRLF conversions. Subject for removal.
1855 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1858 case CURLOPT_INTERFACE:
1860 * Set what interface or address/hostname to bind the socket to when
1861 * performing an operation and thus what from-IP your connection will use.
1863 result = setstropt(&data->set.str[STRING_DEVICE],
1864 va_arg(param, char *));
1866 case CURLOPT_LOCALPORT:
1868 * Set what local port to bind the socket to when performing an operation.
1870 data->set.localport = curlx_sltous(va_arg(param, long));
1872 case CURLOPT_LOCALPORTRANGE:
1874 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1876 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1878 case CURLOPT_KRBLEVEL:
1880 * A string that defines the kerberos security level.
1882 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1883 va_arg(param, char *));
1884 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1886 case CURLOPT_GSSAPI_DELEGATION:
1888 * GSSAPI credential delegation
1890 data->set.gssapi_delegation = va_arg(param, long);
1892 case CURLOPT_SSL_VERIFYPEER:
1894 * Enable peer SSL verifying.
1896 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1898 case CURLOPT_SSL_VERIFYHOST:
1900 * Enable verification of the host name in the peer certificate
1902 arg = va_arg(param, long);
1904 /* Obviously people are not reading documentation and too many thought
1905 this argument took a boolean when it wasn't and misused it. We thus ban
1906 1 as a sensible input and we warn about its use. Then we only have the
1907 2 action internally stored as TRUE. */
1910 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1911 return CURLE_BAD_FUNCTION_ARGUMENT;
1914 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1917 /* since these two options are only possible to use on an OpenSSL-
1918 powered libcurl we #ifdef them on this condition so that libcurls
1919 built against other SSL libs will return a proper error when trying
1920 to set this option! */
1921 case CURLOPT_SSL_CTX_FUNCTION:
1923 * Set a SSL_CTX callback
1925 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1927 case CURLOPT_SSL_CTX_DATA:
1929 * Set a SSL_CTX callback parameter pointer
1931 data->set.ssl.fsslctxp = va_arg(param, void *);
1934 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1936 case CURLOPT_CERTINFO:
1937 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1940 case CURLOPT_CAINFO:
1942 * Set CA info for SSL connection. Specify file name of the CA certificate
1944 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1945 va_arg(param, char *));
1947 case CURLOPT_CAPATH:
1949 * Set CA path info for SSL connection. Specify directory name of the CA
1950 * certificates which have been prepared using openssl c_rehash utility.
1952 /* This does not work on windows. */
1953 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1954 va_arg(param, char *));
1956 case CURLOPT_CRLFILE:
1958 * Set CRL file info for SSL connection. Specify file name of the CRL
1959 * to check certificates revocation
1961 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1962 va_arg(param, char *));
1964 case CURLOPT_ISSUERCERT:
1966 * Set Issuer certificate file
1967 * to check certificates issuer
1969 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1970 va_arg(param, char *));
1972 case CURLOPT_TELNETOPTIONS:
1974 * Set a linked list of telnet options
1976 data->set.telnet_options = va_arg(param, struct curl_slist *);
1979 case CURLOPT_BUFFERSIZE:
1981 * The application kindly asks for a differently sized receive buffer.
1982 * If it seems reasonable, we'll use it.
1984 data->set.buffer_size = va_arg(param, long);
1986 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1987 (data->set.buffer_size < 1))
1988 data->set.buffer_size = 0; /* huge internal default */
1992 case CURLOPT_NOSIGNAL:
1994 * The application asks not to set any signal() or alarm() handlers,
1995 * even when using a timeout.
1997 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2002 struct Curl_share *set;
2003 set = va_arg(param, struct Curl_share *);
2005 /* disconnect from old share, if any */
2007 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2009 if(data->dns.hostcachetype == HCACHE_SHARED) {
2010 data->dns.hostcache = NULL;
2011 data->dns.hostcachetype = HCACHE_NONE;
2014 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2015 if(data->share->cookies == data->cookies)
2016 data->cookies = NULL;
2019 if(data->share->sslsession == data->state.session)
2020 data->state.session = NULL;
2022 data->share->dirty--;
2024 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2028 /* use new share if it set */
2032 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2034 data->share->dirty++;
2036 if(data->share->hostcache) {
2037 /* use shared host cache */
2038 data->dns.hostcache = data->share->hostcache;
2039 data->dns.hostcachetype = HCACHE_SHARED;
2041 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2042 if(data->share->cookies) {
2043 /* use shared cookie list, first free own one if any */
2045 Curl_cookie_cleanup(data->cookies);
2046 /* enable cookies since we now use a share that uses cookies! */
2047 data->cookies = data->share->cookies;
2049 #endif /* CURL_DISABLE_HTTP */
2050 if(data->share->sslsession) {
2051 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2052 data->state.session = data->share->sslsession;
2054 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2057 /* check for host cache not needed,
2058 * it will be done by curl_easy_perform */
2062 case CURLOPT_PRIVATE:
2064 * Set private data pointer.
2066 data->set.private_data = va_arg(param, void *);
2069 case CURLOPT_MAXFILESIZE:
2071 * Set the maximum size of a file to download.
2073 data->set.max_filesize = va_arg(param, long);
2077 case CURLOPT_USE_SSL:
2079 * Make transfers attempt to use SSL/TLS.
2081 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2084 case CURLOPT_SSL_OPTIONS:
2085 arg = va_arg(param, long);
2086 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2090 case CURLOPT_FTPSSLAUTH:
2092 * Set a specific auth for FTP-SSL transfers.
2094 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2097 case CURLOPT_IPRESOLVE:
2098 data->set.ipver = va_arg(param, long);
2101 case CURLOPT_MAXFILESIZE_LARGE:
2103 * Set the maximum size of a file to download.
2105 data->set.max_filesize = va_arg(param, curl_off_t);
2108 case CURLOPT_TCP_NODELAY:
2110 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2113 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2116 case CURLOPT_FTP_ACCOUNT:
2117 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2118 va_arg(param, char *));
2121 case CURLOPT_IGNORE_CONTENT_LENGTH:
2122 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2125 case CURLOPT_CONNECT_ONLY:
2127 * No data transfer, set up connection and let application use the socket
2129 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2132 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2133 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2134 va_arg(param, char *));
2137 case CURLOPT_SOCKOPTFUNCTION:
2139 * socket callback function: called after socket() but before connect()
2141 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2144 case CURLOPT_SOCKOPTDATA:
2146 * socket callback data pointer. Might be NULL.
2148 data->set.sockopt_client = va_arg(param, void *);
2151 case CURLOPT_OPENSOCKETFUNCTION:
2153 * open/create socket callback function: called instead of socket(),
2156 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2159 case CURLOPT_OPENSOCKETDATA:
2161 * socket callback data pointer. Might be NULL.
2163 data->set.opensocket_client = va_arg(param, void *);
2166 case CURLOPT_CLOSESOCKETFUNCTION:
2168 * close socket callback function: called instead of close()
2169 * when shutting down a connection
2171 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2174 case CURLOPT_CLOSESOCKETDATA:
2176 * socket callback data pointer. Might be NULL.
2178 data->set.closesocket_client = va_arg(param, void *);
2181 case CURLOPT_SSL_SESSIONID_CACHE:
2182 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2186 /* we only include SSH options if explicitly built to support SSH */
2187 case CURLOPT_SSH_AUTH_TYPES:
2188 data->set.ssh_auth_types = va_arg(param, long);
2191 case CURLOPT_SSH_PUBLIC_KEYFILE:
2193 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2195 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2196 va_arg(param, char *));
2199 case CURLOPT_SSH_PRIVATE_KEYFILE:
2201 * Use this file instead of the $HOME/.ssh/id_dsa file
2203 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2204 va_arg(param, char *));
2206 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2208 * Option to allow for the MD5 of the host public key to be checked
2209 * for validation purposes.
2211 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2212 va_arg(param, char *));
2214 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2215 case CURLOPT_SSH_KNOWNHOSTS:
2217 * Store the file name to read known hosts from.
2219 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2220 va_arg(param, char *));
2223 case CURLOPT_SSH_KEYFUNCTION:
2224 /* setting to NULL is fine since the ssh.c functions themselves will
2225 then rever to use the internal default */
2226 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2229 case CURLOPT_SSH_KEYDATA:
2231 * Custom client data to pass to the SSH keyfunc callback
2233 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2235 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2237 #endif /* USE_LIBSSH2 */
2239 case CURLOPT_HTTP_TRANSFER_DECODING:
2241 * disable libcurl transfer encoding is used
2243 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2246 case CURLOPT_HTTP_CONTENT_DECODING:
2248 * raw data passed to the application when content encoding is used
2250 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2253 case CURLOPT_NEW_FILE_PERMS:
2255 * Uses these permissions instead of 0644
2257 data->set.new_file_perms = va_arg(param, long);
2260 case CURLOPT_NEW_DIRECTORY_PERMS:
2262 * Uses these permissions instead of 0755
2264 data->set.new_directory_perms = va_arg(param, long);
2267 case CURLOPT_ADDRESS_SCOPE:
2269 * We always get longs when passed plain numericals, but for this value we
2270 * know that an unsigned int will always hold the value so we blindly
2271 * typecast to this type
2273 data->set.scope = curlx_sltoui(va_arg(param, long));
2276 case CURLOPT_PROTOCOLS:
2277 /* set the bitmask for the protocols that are allowed to be used for the
2278 transfer, which thus helps the app which takes URLs from users or other
2279 external inputs and want to restrict what protocol(s) to deal
2280 with. Defaults to CURLPROTO_ALL. */
2281 data->set.allowed_protocols = va_arg(param, long);
2284 case CURLOPT_REDIR_PROTOCOLS:
2285 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2286 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2287 to be set in both bitmasks to be allowed to get redirected to. Defaults
2288 to all protocols except FILE and SCP. */
2289 data->set.redir_protocols = va_arg(param, long);
2292 case CURLOPT_MAIL_FROM:
2293 /* Set the SMTP mail originator */
2294 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2295 va_arg(param, char *));
2298 case CURLOPT_MAIL_AUTH:
2299 /* Set the SMTP auth originator */
2300 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2301 va_arg(param, char *));
2304 case CURLOPT_MAIL_RCPT:
2305 /* Set the list of mail recipients */
2306 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2309 case CURLOPT_SASL_IR:
2310 /* Enable/disable SASL initial response */
2311 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2314 case CURLOPT_RTSP_REQUEST:
2317 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2318 * Would this be better if the RTSPREQ_* were just moved into here?
2320 long curl_rtspreq = va_arg(param, long);
2321 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2322 switch(curl_rtspreq) {
2323 case CURL_RTSPREQ_OPTIONS:
2324 rtspreq = RTSPREQ_OPTIONS;
2327 case CURL_RTSPREQ_DESCRIBE:
2328 rtspreq = RTSPREQ_DESCRIBE;
2331 case CURL_RTSPREQ_ANNOUNCE:
2332 rtspreq = RTSPREQ_ANNOUNCE;
2335 case CURL_RTSPREQ_SETUP:
2336 rtspreq = RTSPREQ_SETUP;
2339 case CURL_RTSPREQ_PLAY:
2340 rtspreq = RTSPREQ_PLAY;
2343 case CURL_RTSPREQ_PAUSE:
2344 rtspreq = RTSPREQ_PAUSE;
2347 case CURL_RTSPREQ_TEARDOWN:
2348 rtspreq = RTSPREQ_TEARDOWN;
2351 case CURL_RTSPREQ_GET_PARAMETER:
2352 rtspreq = RTSPREQ_GET_PARAMETER;
2355 case CURL_RTSPREQ_SET_PARAMETER:
2356 rtspreq = RTSPREQ_SET_PARAMETER;
2359 case CURL_RTSPREQ_RECORD:
2360 rtspreq = RTSPREQ_RECORD;
2363 case CURL_RTSPREQ_RECEIVE:
2364 rtspreq = RTSPREQ_RECEIVE;
2367 rtspreq = RTSPREQ_NONE;
2370 data->set.rtspreq = rtspreq;
2375 case CURLOPT_RTSP_SESSION_ID:
2377 * Set the RTSP Session ID manually. Useful if the application is
2378 * resuming a previously established RTSP session
2380 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2381 va_arg(param, char *));
2384 case CURLOPT_RTSP_STREAM_URI:
2386 * Set the Stream URI for the RTSP request. Unless the request is
2387 * for generic server options, the application will need to set this.
2389 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2390 va_arg(param, char *));
2393 case CURLOPT_RTSP_TRANSPORT:
2395 * The content of the Transport: header for the RTSP request
2397 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2398 va_arg(param, char *));
2401 case CURLOPT_RTSP_CLIENT_CSEQ:
2403 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2404 * application is resuming a previously broken connection. The CSEQ
2405 * will increment from this new number henceforth.
2407 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2410 case CURLOPT_RTSP_SERVER_CSEQ:
2411 /* Same as the above, but for server-initiated requests */
2412 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2415 case CURLOPT_INTERLEAVEDATA:
2416 data->set.rtp_out = va_arg(param, void *);
2418 case CURLOPT_INTERLEAVEFUNCTION:
2419 /* Set the user defined RTP write function */
2420 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2423 case CURLOPT_WILDCARDMATCH:
2424 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2426 case CURLOPT_CHUNK_BGN_FUNCTION:
2427 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2429 case CURLOPT_CHUNK_END_FUNCTION:
2430 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2432 case CURLOPT_FNMATCH_FUNCTION:
2433 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2435 case CURLOPT_CHUNK_DATA:
2436 data->wildcard.customptr = va_arg(param, void *);
2438 case CURLOPT_FNMATCH_DATA:
2439 data->set.fnmatch_data = va_arg(param, void *);
2442 case CURLOPT_TLSAUTH_USERNAME:
2443 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2444 va_arg(param, char *));
2445 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2446 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2448 case CURLOPT_TLSAUTH_PASSWORD:
2449 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2450 va_arg(param, char *));
2451 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2452 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2454 case CURLOPT_TLSAUTH_TYPE:
2455 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2456 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2458 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2461 case CURLOPT_DNS_SERVERS:
2462 result = Curl_set_dns_servers(data, va_arg(param, char *));
2464 case CURLOPT_DNS_INTERFACE:
2465 result = Curl_set_dns_interface(data, va_arg(param, char *));
2467 case CURLOPT_DNS_LOCAL_IP4:
2468 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2470 case CURLOPT_DNS_LOCAL_IP6:
2471 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2474 case CURLOPT_TCP_KEEPALIVE:
2475 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2477 case CURLOPT_TCP_KEEPIDLE:
2478 data->set.tcp_keepidle = va_arg(param, long);
2480 case CURLOPT_TCP_KEEPINTVL:
2481 data->set.tcp_keepintvl = va_arg(param, long);
2483 case CURLOPT_SSL_ENABLE_NPN:
2484 data->set.ssl_enable_npn = (0 != va_arg(param, long))?TRUE:FALSE;
2486 case CURLOPT_SSL_ENABLE_ALPN:
2487 data->set.ssl_enable_alpn = (0 != va_arg(param, long))?TRUE:FALSE;
2491 /* unknown tag and its companion, just ignore: */
2492 result = CURLE_UNKNOWN_OPTION;
2499 static void conn_free(struct connectdata *conn)
2504 /* possible left-overs from the async name resolvers */
2505 Curl_resolver_cancel(conn);
2507 /* close the SSL stuff before we close any sockets since they will/may
2508 write to the sockets */
2509 Curl_ssl_close(conn, FIRSTSOCKET);
2510 Curl_ssl_close(conn, SECONDARYSOCKET);
2512 /* close possibly still open sockets */
2513 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2514 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2515 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2516 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2517 if(CURL_SOCKET_BAD != conn->tempsock[0])
2518 Curl_closesocket(conn, conn->tempsock[0]);
2519 if(CURL_SOCKET_BAD != conn->tempsock[1])
2520 Curl_closesocket(conn, conn->tempsock[1]);
2522 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2523 Curl_ntlm_wb_cleanup(conn);
2526 Curl_safefree(conn->user);
2527 Curl_safefree(conn->passwd);
2528 Curl_safefree(conn->xoauth2_bearer);
2529 Curl_safefree(conn->options);
2530 Curl_safefree(conn->proxyuser);
2531 Curl_safefree(conn->proxypasswd);
2532 Curl_safefree(conn->allocptr.proxyuserpwd);
2533 Curl_safefree(conn->allocptr.uagent);
2534 Curl_safefree(conn->allocptr.userpwd);
2535 Curl_safefree(conn->allocptr.accept_encoding);
2536 Curl_safefree(conn->allocptr.te);
2537 Curl_safefree(conn->allocptr.rangeline);
2538 Curl_safefree(conn->allocptr.ref);
2539 Curl_safefree(conn->allocptr.host);
2540 Curl_safefree(conn->allocptr.cookiehost);
2541 Curl_safefree(conn->allocptr.rtsp_transport);
2542 Curl_safefree(conn->trailer);
2543 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2544 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2545 Curl_safefree(conn->master_buffer);
2547 Curl_llist_destroy(conn->send_pipe, NULL);
2548 Curl_llist_destroy(conn->recv_pipe, NULL);
2550 conn->send_pipe = NULL;
2551 conn->recv_pipe = NULL;
2553 Curl_safefree(conn->localdev);
2554 Curl_free_ssl_config(&conn->ssl_config);
2556 free(conn); /* free all the connection oriented data */
2559 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2561 struct SessionHandle *data;
2563 return CURLE_OK; /* this is closed and fine already */
2567 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2571 if(conn->dns_entry != NULL) {
2572 Curl_resolv_unlock(data, conn->dns_entry);
2573 conn->dns_entry = NULL;
2576 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2579 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2580 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2582 /* Authentication data is a mix of connection-related and sessionhandle-
2583 related stuff. NTLM is connection-related so when we close the shop
2587 data->state.authhost.done = FALSE;
2588 data->state.authhost.picked =
2589 data->state.authhost.want;
2592 if(has_proxy_ntlm) {
2593 data->state.authproxy.done = FALSE;
2594 data->state.authproxy.picked =
2595 data->state.authproxy.want;
2598 if(has_host_ntlm || has_proxy_ntlm)
2599 data->state.authproblem = FALSE;
2602 /* Cleanup NTLM connection-related data */
2603 Curl_http_ntlm_cleanup(conn);
2605 /* Cleanup possible redirect junk */
2606 if(data->req.newurl) {
2607 free(data->req.newurl);
2608 data->req.newurl = NULL;
2611 if(conn->handler->disconnect)
2612 /* This is set if protocol-specific cleanups should be made */
2613 conn->handler->disconnect(conn, dead_connection);
2615 /* unlink ourselves! */
2616 infof(data, "Closing connection %ld\n", conn->connection_id);
2617 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2619 #if defined(USE_LIBIDN)
2620 if(conn->host.encalloc)
2621 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2622 with idn_free() since this was allocated
2624 if(conn->proxy.encalloc)
2625 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2626 freed with idn_free() since this was
2627 allocated by libidn */
2628 #elif defined(USE_WIN32_IDN)
2629 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2630 idn_free() since this was allocated by
2631 curl_win32_idn_to_ascii */
2632 if(conn->proxy.encalloc)
2633 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2634 with idn_free() since this was allocated by
2635 curl_win32_idn_to_ascii */
2638 Curl_ssl_close(conn, FIRSTSOCKET);
2640 /* Indicate to all handles on the pipe that we're dead */
2641 if(Curl_multi_pipeline_enabled(data->multi)) {
2642 signalPipeClose(conn->send_pipe, TRUE);
2643 signalPipeClose(conn->recv_pipe, TRUE);
2648 Curl_speedinit(data);
2654 * This function should return TRUE if the socket is to be assumed to
2655 * be dead. Most commonly this happens when the server has closed the
2656 * connection due to inactivity.
2658 static bool SocketIsDead(curl_socket_t sock)
2661 bool ret_val = TRUE;
2663 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2671 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2672 const struct connectdata *conn)
2674 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2675 Curl_multi_pipeline_enabled(handle->multi) &&
2676 (handle->set.httpreq == HTTPREQ_GET ||
2677 handle->set.httpreq == HTTPREQ_HEAD) &&
2678 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2684 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2686 return Curl_multi_pipeline_enabled(handle->multi);
2689 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2690 struct curl_llist *pipeline)
2692 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2693 return CURLE_OUT_OF_MEMORY;
2697 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2698 struct curl_llist *pipeline)
2700 struct curl_llist_element *curr;
2702 curr = pipeline->head;
2704 if(curr->ptr == handle) {
2705 Curl_llist_remove(pipeline, curr, NULL);
2706 return 1; /* we removed a handle */
2714 #if 0 /* this code is saved here as it is useful for debugging purposes */
2715 static void Curl_printPipeline(struct curl_llist *pipeline)
2717 struct curl_llist_element *curr;
2719 curr = pipeline->head;
2721 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2722 infof(data, "Handle in pipeline: %s\n", data->state.path);
2728 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2730 struct curl_llist_element *curr = pipeline->head;
2732 return (struct SessionHandle *) curr->ptr;
2738 /* remove the specified connection from all (possible) pipelines and related
2740 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2741 struct connectdata *conn)
2743 bool recv_head = (conn->readchannel_inuse &&
2744 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2746 bool send_head = (conn->writechannel_inuse &&
2747 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2749 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2750 conn->readchannel_inuse = FALSE;
2751 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2752 conn->writechannel_inuse = FALSE;
2755 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2757 struct curl_llist_element *curr;
2762 curr = pipeline->head;
2764 struct curl_llist_element *next = curr->next;
2765 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2767 #ifdef DEBUGBUILD /* debug-only code */
2768 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2770 infof(data, "signalPipeClose() found BAAD easy handle\n");
2775 data->state.pipe_broke = TRUE;
2776 Curl_multi_handlePipeBreak(data);
2777 Curl_llist_remove(pipeline, curr, NULL);
2783 * This function finds the connection in the connection
2784 * cache that has been unused for the longest time.
2786 * Returns the pointer to the oldest idle connection, or NULL if none was
2789 static struct connectdata *
2790 find_oldest_idle_connection(struct SessionHandle *data)
2792 struct conncache *bc = data->state.conn_cache;
2793 struct curl_hash_iterator iter;
2794 struct curl_llist_element *curr;
2795 struct curl_hash_element *he;
2799 struct connectdata *conn_candidate = NULL;
2800 struct connectbundle *bundle;
2804 Curl_hash_start_iterate(bc->hash, &iter);
2806 he = Curl_hash_next_element(&iter);
2808 struct connectdata *conn;
2812 curr = bundle->conn_list->head;
2817 /* Set higher score for the age passed since the connection was used */
2818 score = Curl_tvdiff(now, conn->now);
2820 if(score > highscore) {
2822 conn_candidate = conn;
2828 he = Curl_hash_next_element(&iter);
2831 return conn_candidate;
2835 * This function finds the connection in the connection
2836 * bundle that has been unused for the longest time.
2838 * Returns the pointer to the oldest idle connection, or NULL if none was
2841 static struct connectdata *
2842 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2843 struct connectbundle *bundle)
2845 struct curl_llist_element *curr;
2849 struct connectdata *conn_candidate = NULL;
2850 struct connectdata *conn;
2856 curr = bundle->conn_list->head;
2861 /* Set higher score for the age passed since the connection was used */
2862 score = Curl_tvdiff(now, conn->now);
2864 if(score > highscore) {
2866 conn_candidate = conn;
2872 return conn_candidate;
2876 * Given one filled in connection struct (named needle), this function should
2877 * detect if there already is one that has all the significant details
2878 * exactly the same and thus should be used instead.
2880 * If there is a match, this function returns TRUE - and has marked the
2881 * connection as 'in-use'. It must later be called with ConnectionDone() to
2882 * return back to 'idle' (unused) state.
2884 * The force_reuse flag is set if the connection must be used, even if
2885 * the pipelining strategy wants to open a new connection instead of reusing.
2888 ConnectionExists(struct SessionHandle *data,
2889 struct connectdata *needle,
2890 struct connectdata **usethis,
2893 struct connectdata *check;
2894 struct connectdata *chosen = 0;
2895 bool canPipeline = IsPipeliningPossible(data, needle);
2896 bool wantNTLM = (data->state.authhost.want & CURLAUTH_NTLM) ||
2897 (data->state.authhost.want & CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2898 struct connectbundle *bundle;
2900 *force_reuse = FALSE;
2902 /* We can't pipe if the site is blacklisted */
2903 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2904 canPipeline = FALSE;
2907 /* Look up the bundle with all the connections to this
2909 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2912 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2913 size_t best_pipe_len = max_pipe_len;
2914 struct curl_llist_element *curr;
2916 infof(data, "Found bundle for host %s: %p\n",
2917 needle->host.name, (void *)bundle);
2919 /* We can't pipe if we don't know anything about the server */
2920 if(canPipeline && !bundle->server_supports_pipelining) {
2921 infof(data, "Server doesn't support pipelining\n");
2922 canPipeline = FALSE;
2925 curr = bundle->conn_list->head;
2928 bool credentialsMatch = FALSE;
2932 * Note that if we use a HTTP proxy, we check connections to that
2933 * proxy and not to the actual remote server.
2938 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2940 if(!pipeLen && !check->inuse) {
2941 /* The check for a dead socket makes sense only if there are no
2942 handles in pipeline and the connection isn't already marked in
2945 if(check->handler->protocol & CURLPROTO_RTSP)
2946 /* RTSP is a special case due to RTP interleaving */
2947 dead = Curl_rtsp_connisdead(check);
2949 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2953 infof(data, "Connection %ld seems to be dead!\n",
2954 check->connection_id);
2956 /* disconnect resources */
2957 Curl_disconnect(check, /* dead_connection */ TRUE);
2963 /* Make sure the pipe has only GET requests */
2964 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2965 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2967 if(!IsPipeliningPossible(sh, check))
2971 if(!IsPipeliningPossible(rh, check))
2977 /* can only happen within multi handles, and means that another easy
2978 handle is using this connection */
2982 if(Curl_resolver_asynch()) {
2983 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2984 completed yet and until then we don't re-use this connection */
2985 if(!check->ip_addr_str[0]) {
2987 "Connection #%ld is still name resolving, can't reuse\n",
2988 check->connection_id);
2993 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2994 check->bits.close) {
2995 /* Don't pick a connection that hasn't connected yet or that is going
2997 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2998 check->connection_id);
3000 if(check->recv_pipe->size > 0) {
3002 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3003 check->connection_id);
3010 if((needle->handler->flags&PROTOPT_SSL) !=
3011 (check->handler->flags&PROTOPT_SSL))
3012 /* don't do mixed SSL and non-SSL connections */
3013 if(!(needle->handler->protocol & check->handler->protocol))
3014 /* except protocols that have been upgraded via TLS */
3017 if(needle->handler->flags&PROTOPT_SSL) {
3018 if((data->set.ssl.verifypeer != check->verifypeer) ||
3019 (data->set.ssl.verifyhost != check->verifyhost))
3023 if(needle->bits.proxy != check->bits.proxy)
3024 /* don't do mixed proxy and non-proxy connections */
3027 if(!canPipeline && check->inuse)
3028 /* this request can't be pipelined but the checked connection is
3029 already in use so we skip it */
3032 if(needle->localdev || needle->localport) {
3033 /* If we are bound to a specific local end (IP+port), we must not
3034 re-use a random other one, although if we didn't ask for a
3035 particular one we can reuse one that was bound.
3037 This comparison is a bit rough and too strict. Since the input
3038 parameters can be specified in numerous ways and still end up the
3039 same it would take a lot of processing to make it really accurate.
3040 Instead, this matching will assume that re-uses of bound connections
3041 will most likely also re-use the exact same binding parameters and
3042 missing out a few edge cases shouldn't hurt anyone very much.
3044 if((check->localport != needle->localport) ||
3045 (check->localportrange != needle->localportrange) ||
3047 !needle->localdev ||
3048 strcmp(check->localdev, needle->localdev))
3052 if((needle->handler->protocol & CURLPROTO_FTP) ||
3053 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3054 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3055 and password as well */
3056 if(!strequal(needle->user, check->user) ||
3057 !strequal(needle->passwd, check->passwd)) {
3058 /* one of them was different */
3061 credentialsMatch = TRUE;
3064 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3065 (needle->bits.httpproxy && check->bits.httpproxy &&
3066 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3067 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3068 (needle->port == check->port))) {
3069 /* The requested connection does not use a HTTP proxy or it uses SSL or
3070 it is a non-SSL protocol tunneled over the same http proxy name and
3071 port number or it is a non-SSL protocol which is allowed to be
3074 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3075 needle->handler->protocol & check->handler->protocol) &&
3076 Curl_raw_equal(needle->host.name, check->host.name) &&
3077 needle->remote_port == check->remote_port) {
3078 if(needle->handler->flags & PROTOPT_SSL) {
3079 /* This is a SSL connection so verify that we're using the same
3080 SSL options as well */
3081 if(!Curl_ssl_config_matches(&needle->ssl_config,
3082 &check->ssl_config)) {
3084 "Connection #%ld has different SSL parameters, "
3086 check->connection_id));
3089 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3091 "Connection #%ld has not started SSL connect, "
3093 check->connection_id));
3100 else { /* The requested needle connection is using a proxy,
3101 is the checked one using the same host, port and type? */
3102 if(check->bits.proxy &&
3103 (needle->proxytype == check->proxytype) &&
3104 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3105 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3106 needle->port == check->port) {
3107 /* This is the same proxy connection, use it! */
3113 /* If we are looking for an NTLM connection, check if this is already
3114 authenticating with the right credentials. If not, keep looking so
3115 that we can reuse NTLM connections if possible. (Especially we
3116 must not reuse the same connection if partway through
3119 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3122 /* We must use this connection, no other */
3123 *force_reuse = TRUE;
3131 /* We can pipeline if we want to. Let's continue looking for
3132 the optimal connection to use, i.e the shortest pipe that is not
3136 /* We have the optimal connection. Let's stop looking. */
3141 /* We can't use the connection if the pipe is full */
3142 if(pipeLen >= max_pipe_len)
3145 /* We can't use the connection if the pipe is penalized */
3146 if(Curl_pipeline_penalized(data, check))
3149 if(pipeLen < best_pipe_len) {
3150 /* This connection has a shorter pipe so far. We'll pick this
3151 and continue searching */
3153 best_pipe_len = pipeLen;
3158 /* We have found a connection. Let's stop searching. */
3168 return TRUE; /* yes, we found one to use! */
3171 return FALSE; /* no matching connecting exists */
3174 /* Mark the connection as 'idle', or close it if the cache is full.
3175 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3177 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3179 /* data->multi->maxconnects can be negative, deal with it. */
3180 size_t maxconnects =
3181 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3182 struct connectdata *conn_candidate = NULL;
3184 /* Mark the current connection as 'unused' */
3185 conn->inuse = FALSE;
3187 if(maxconnects > 0 &&
3188 data->state.conn_cache->num_connections > maxconnects) {
3189 infof(data, "Connection cache is full, closing the oldest one.\n");
3191 conn_candidate = find_oldest_idle_connection(data);
3193 if(conn_candidate) {
3194 /* Set the connection's owner correctly */
3195 conn_candidate->data = data;
3197 /* the winner gets the honour of being disconnected */
3198 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3202 return (conn_candidate == conn) ? FALSE : TRUE;
3206 * The given input connection struct pointer is to be stored in the connection
3207 * cache. If the cache is already full, least interesting existing connection
3208 * (if any) gets closed.
3210 * The given connection should be unique. That must've been checked prior to
3213 static CURLcode ConnectionStore(struct SessionHandle *data,
3214 struct connectdata *conn)
3216 static int connection_id_counter = 0;
3220 /* Assign a number to the connection for easier tracking in the log
3222 conn->connection_id = connection_id_counter++;
3224 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3225 if(result != CURLE_OK)
3226 conn->connection_id = -1;
3231 /* after a TCP connection to the proxy has been verified, this function does
3232 the next magic step.
3234 Note: this function's sub-functions call failf()
3237 CURLcode Curl_connected_proxy(struct connectdata *conn,
3240 if(!conn->bits.proxy || sockindex)
3241 /* this magic only works for the primary socket as the secondary is used
3242 for FTP only and it has FTP specific magic in ftp.c */
3245 switch(conn->proxytype) {
3246 #ifndef CURL_DISABLE_PROXY
3247 case CURLPROXY_SOCKS5:
3248 case CURLPROXY_SOCKS5_HOSTNAME:
3249 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3250 conn->host.name, conn->remote_port,
3253 case CURLPROXY_SOCKS4:
3254 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3255 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3257 case CURLPROXY_SOCKS4A:
3258 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3259 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3261 #endif /* CURL_DISABLE_PROXY */
3262 case CURLPROXY_HTTP:
3263 case CURLPROXY_HTTP_1_0:
3264 /* do nothing here. handled later. */
3268 } /* switch proxytype */
3274 * verboseconnect() displays verbose information after a connect
3276 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3277 void Curl_verboseconnect(struct connectdata *conn)
3279 if(conn->data->set.verbose)
3280 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3281 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3282 conn->ip_addr_str, conn->port, conn->connection_id);
3286 int Curl_protocol_getsock(struct connectdata *conn,
3287 curl_socket_t *socks,
3290 if(conn->handler->proto_getsock)
3291 return conn->handler->proto_getsock(conn, socks, numsocks);
3292 return GETSOCK_BLANK;
3295 int Curl_doing_getsock(struct connectdata *conn,
3296 curl_socket_t *socks,
3299 if(conn && conn->handler->doing_getsock)
3300 return conn->handler->doing_getsock(conn, socks, numsocks);
3301 return GETSOCK_BLANK;
3305 * We are doing protocol-specific connecting and this is being called over and
3306 * over from the multi interface until the connection phase is done on
3310 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3313 CURLcode result=CURLE_OK;
3315 if(conn && conn->handler->connecting) {
3317 result = conn->handler->connecting(conn, done);
3326 * We are DOING this is being called over and over from the multi interface
3327 * until the DOING phase is done on protocol layer.
3330 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3332 CURLcode result=CURLE_OK;
3334 if(conn && conn->handler->doing) {
3336 result = conn->handler->doing(conn, done);
3345 * We have discovered that the TCP connection has been successful, we can now
3346 * proceed with some action.
3349 CURLcode Curl_protocol_connect(struct connectdata *conn,
3350 bool *protocol_done)
3352 CURLcode result=CURLE_OK;
3354 *protocol_done = FALSE;
3356 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3357 /* We already are connected, get back. This may happen when the connect
3358 worked fine in the first call, like when we connect to a local server
3359 or proxy. Note that we don't know if the protocol is actually done.
3361 Unless this protocol doesn't have any protocol-connect callback, as
3362 then we know we're done. */
3363 if(!conn->handler->connecting)
3364 *protocol_done = TRUE;
3369 if(!conn->bits.protoconnstart) {
3371 result = Curl_proxy_connect(conn);
3375 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3376 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3377 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3378 before proceeding further. Return CURLE_OK so we'll be called again */
3381 if(conn->handler->connect_it) {
3382 /* is there a protocol-specific connect() procedure? */
3384 /* Call the protocol-specific connect function */
3385 result = conn->handler->connect_it(conn, protocol_done);
3388 *protocol_done = TRUE;
3390 /* it has started, possibly even completed but that knowledge isn't stored
3393 conn->bits.protoconnstart = TRUE;
3396 return result; /* pass back status */
3400 * Helpers for IDNA convertions.
3402 static bool is_ASCII_name(const char *hostname)
3404 const unsigned char *ch = (const unsigned char*)hostname;
3415 * Check if characters in hostname is allowed in Top Level Domain.
3417 static bool tld_check_name(struct SessionHandle *data,
3418 const char *ace_hostname)
3421 char *uc_name = NULL;
3423 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3424 const char *tld_errmsg = "<no msg>";
3429 /* Convert (and downcase) ACE-name back into locale's character set */
3430 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3431 if(rc != IDNA_SUCCESS)
3434 rc = tld_check_lz(uc_name, &err_pos, NULL);
3435 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3436 #ifdef HAVE_TLD_STRERROR
3437 if(rc != TLD_SUCCESS)
3438 tld_errmsg = tld_strerror((Tld_rc)rc);
3440 if(rc == TLD_INVALID)
3441 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3442 tld_errmsg, err_pos, uc_name[err_pos],
3443 uc_name[err_pos] & 255);
3444 else if(rc != TLD_SUCCESS)
3445 infof(data, "WARNING: TLD check for %s failed; %s\n",
3446 uc_name, tld_errmsg);
3447 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3450 if(rc != TLD_SUCCESS)
3458 * Perform any necessary IDN conversion of hostname
3460 static void fix_hostname(struct SessionHandle *data,
3461 struct connectdata *conn, struct hostname *host)
3466 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3470 /* set the name we use to display the host name */
3471 host->dispname = host->name;
3472 if(!is_ASCII_name(host->name)) {
3474 /*************************************************************
3475 * Check name for non-ASCII and convert hostname to ACE form.
3476 *************************************************************/
3477 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3478 char *ace_hostname = NULL;
3479 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3480 infof (data, "Input domain encoded as `%s'\n",
3481 stringprep_locale_charset ());
3482 if(rc != IDNA_SUCCESS)
3483 infof(data, "Failed to convert %s to ACE; %s\n",
3484 host->name, Curl_idn_strerror(conn,rc));
3486 /* tld_check_name() displays a warning if the host name contains
3487 "illegal" characters for this TLD */
3488 (void)tld_check_name(data, ace_hostname);
3490 host->encalloc = ace_hostname;
3491 /* change the name pointer to point to the encoded hostname */
3492 host->name = host->encalloc;
3495 #elif defined(USE_WIN32_IDN)
3496 /*************************************************************
3497 * Check name for non-ASCII and convert hostname to ACE form.
3498 *************************************************************/
3499 char *ace_hostname = NULL;
3500 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3502 infof(data, "Failed to convert %s to ACE;\n",
3505 host->encalloc = ace_hostname;
3506 /* change the name pointer to point to the encoded hostname */
3507 host->name = host->encalloc;
3510 infof(data, "IDN support not present, can't parse Unicode domains\n");
3515 static void llist_dtor(void *user, void *element)
3523 * Allocate and initialize a new connectdata object.
3525 static struct connectdata *allocate_conn(struct SessionHandle *data)
3527 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3531 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3532 already from start to avoid NULL
3533 situations and checks */
3535 /* and we setup a few fields in case we end up actually using this struct */
3537 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3538 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3539 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3540 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3541 conn->connection_id = -1; /* no ID */
3542 conn->port = -1; /* unknown at this point */
3544 /* Default protocol-independent behavior doesn't support persistent
3545 connections, so we set this to force-close. Protocols that support
3546 this need to set this to FALSE in their "curl_do" functions. */
3547 conn->bits.close = TRUE;
3549 /* Store creation time to help future close decision making */
3550 conn->created = Curl_tvnow();
3552 conn->data = data; /* Setup the association between this connection
3553 and the SessionHandle */
3555 conn->proxytype = data->set.proxytype; /* type */
3557 #ifdef CURL_DISABLE_PROXY
3559 conn->bits.proxy = FALSE;
3560 conn->bits.httpproxy = FALSE;
3561 conn->bits.proxy_user_passwd = FALSE;
3562 conn->bits.tunnel_proxy = FALSE;
3564 #else /* CURL_DISABLE_PROXY */
3566 /* note that these two proxy bits are now just on what looks to be
3567 requested, they may be altered down the road */
3568 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3569 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3570 conn->bits.httpproxy = (conn->bits.proxy &&
3571 (conn->proxytype == CURLPROXY_HTTP ||
3572 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3573 conn->bits.proxy_user_passwd =
3574 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3575 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3577 #endif /* CURL_DISABLE_PROXY */
3579 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3580 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3581 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3583 conn->verifypeer = data->set.ssl.verifypeer;
3584 conn->verifyhost = data->set.ssl.verifyhost;
3586 conn->ip_version = data->set.ipver;
3588 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3589 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3590 conn->ntlm_auth_hlpr_pid = 0;
3591 conn->challenge_header = NULL;
3592 conn->response_header = NULL;
3595 if(Curl_multi_pipeline_enabled(data->multi) &&
3596 !conn->master_buffer) {
3597 /* Allocate master_buffer to be used for pipelining */
3598 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3599 if(!conn->master_buffer)
3603 /* Initialize the pipeline lists */
3604 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3605 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3606 if(!conn->send_pipe || !conn->recv_pipe)
3610 conn->data_prot = PROT_CLEAR;
3613 /* Store the local bind parameters that will be used for this connection */
3614 if(data->set.str[STRING_DEVICE]) {
3615 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3619 conn->localportrange = data->set.localportrange;
3620 conn->localport = data->set.localport;
3622 /* the close socket stuff needs to be copied to the connection struct as
3623 it may live on without (this specific) SessionHandle */
3624 conn->fclosesocket = data->set.fclosesocket;
3625 conn->closesocket_client = data->set.closesocket_client;
3630 Curl_llist_destroy(conn->send_pipe, NULL);
3631 Curl_llist_destroy(conn->recv_pipe, NULL);
3633 conn->send_pipe = NULL;
3634 conn->recv_pipe = NULL;
3636 Curl_safefree(conn->master_buffer);
3637 Curl_safefree(conn->localdev);
3638 Curl_safefree(conn);
3642 static CURLcode findprotocol(struct SessionHandle *data,
3643 struct connectdata *conn,
3644 const char *protostr)
3646 const struct Curl_handler * const *pp;
3647 const struct Curl_handler *p;
3649 /* Scan protocol handler table and match against 'protostr' to set a few
3650 variables based on the URL. Now that the handler may be changed later
3651 when the protocol specific setup function is called. */
3652 for(pp = protocols; (p = *pp) != NULL; pp++) {
3653 if(Curl_raw_equal(p->scheme, protostr)) {
3654 /* Protocol found in table. Check if allowed */
3655 if(!(data->set.allowed_protocols & p->protocol))
3659 /* it is allowed for "normal" request, now do an extra check if this is
3660 the result of a redirect */
3661 if(data->state.this_is_a_follow &&
3662 !(data->set.redir_protocols & p->protocol))
3666 /* Perform setup complement if some. */
3667 conn->handler = conn->given = p;
3669 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3675 /* The protocol was not found in the table, but we don't have to assign it
3676 to anything since it is already assigned to a dummy-struct in the
3677 create_conn() function when the connectdata struct is allocated. */
3678 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3681 return CURLE_UNSUPPORTED_PROTOCOL;
3685 * Parse URL and fill in the relevant members of the connection struct.
3687 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3688 struct connectdata *conn,
3690 char **userp, char **passwdp,
3695 char *path = data->state.path;
3701 bool rebuild_url = FALSE;
3703 *prot_missing = FALSE;
3705 /*************************************************************
3708 * We need to parse the url even when using the proxy, because we will need
3709 * the hostname and port in case we are trying to SSL connect through the
3710 * proxy -- and we don't know if we will need to use SSL until we parse the
3712 ************************************************************/
3713 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3715 Curl_raw_equal(protobuf, "file")) {
3716 if(path[0] == '/' && path[1] == '/') {
3717 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3718 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3719 * file://localhost/<path> is similar to how other schemes treat missing
3720 * hostnames. See RFC 1808. */
3722 /* This cannot be done with strcpy() in a portable manner, since the
3723 memory areas overlap! */
3724 memmove(path, path + 2, strlen(path + 2)+1);
3727 * we deal with file://<host>/<path> differently since it supports no
3728 * hostname other than "localhost" and "127.0.0.1", which is unique among
3729 * the URL protocols specified in RFC 1738
3731 if(path[0] != '/') {
3732 /* the URL included a host name, we ignore host names in file:// URLs
3733 as the standards don't define what to do with them */
3734 char *ptr=strchr(path, '/');
3736 /* there was a slash present
3738 RFC1738 (section 3.1, page 5) says:
3740 The rest of the locator consists of data specific to the scheme,
3741 and is known as the "url-path". It supplies the details of how the
3742 specified resource can be accessed. Note that the "/" between the
3743 host (or port) and the url-path is NOT part of the url-path.
3745 As most agents use file://localhost/foo to get '/foo' although the
3746 slash preceding foo is a separator and not a slash for the path,
3747 a URL as file://localhost//foo must be valid as well, to refer to
3748 the same file with an absolute path.
3751 if(ptr[1] && ('/' == ptr[1]))
3752 /* if there was two slashes, we skip the first one as that is then
3753 used truly as a separator */
3756 /* This cannot be made with strcpy, as the memory chunks overlap! */
3757 memmove(path, ptr, strlen(ptr)+1);
3761 protop = "file"; /* protocol string */
3767 if(2 > sscanf(data->change.url,
3768 "%15[^\n:]://%[^\n/?]%[^\n]",
3770 conn->host.name, path)) {
3773 * The URL was badly formatted, let's try the browser-style _without_
3774 * protocol specified like 'http://'.
3776 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3779 * We couldn't even get this format.
3780 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3781 * assigned, but the return value is EOF!
3783 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3784 if(!(rc == -1 && *conn->host.name))
3787 failf(data, "<url> malformed");
3788 return CURLE_URL_MALFORMAT;
3793 * Since there was no protocol part specified, we guess what protocol it
3794 * is based on the first letters of the server name.
3797 /* Note: if you add a new protocol, please update the list in
3798 * lib/version.c too! */
3800 if(checkprefix("FTP.", conn->host.name))
3802 else if(checkprefix("DICT.", conn->host.name))
3804 else if(checkprefix("LDAP.", conn->host.name))
3806 else if(checkprefix("IMAP.", conn->host.name))
3808 else if(checkprefix("SMTP.", conn->host.name))
3810 else if(checkprefix("POP3.", conn->host.name))
3816 *prot_missing = TRUE; /* not given in URL */
3822 /* We search for '?' in the host name (but only on the right side of a
3823 * @-letter to allow ?-letters in username and password) to handle things
3824 * like http://example.com?param= (notice the missing '/').
3826 at = strchr(conn->host.name, '@');
3828 query = strchr(at+1, '?');
3830 query = strchr(conn->host.name, '?');
3833 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3834 a slash after the '?', that is where the path currently begins and the
3835 '?string' is still part of the host name.
3837 We must move the trailing part from the host name and put it first in
3838 the path. And have it all prefixed with a slash.
3841 size_t hostlen = strlen(query);
3842 size_t pathlen = strlen(path);
3844 /* move the existing path plus the zero byte forward, to make room for
3845 the host-name part */
3846 memmove(path+hostlen+1, path, pathlen+1);
3848 /* now copy the trailing host part in front of the existing path */
3849 memcpy(path+1, query, hostlen);
3851 path[0]='/'; /* prepend the missing slash */
3854 *query=0; /* now cut off the hostname at the ? */
3857 /* if there's no path set, use a single slash */
3862 /* If the URL is malformatted (missing a '/' after hostname before path) we
3863 * insert a slash here. The only letter except '/' we accept to start a path
3866 if(path[0] == '?') {
3867 /* We need this function to deal with overlapping memory areas. We know
3868 that the memory area 'path' points to is 'urllen' bytes big and that
3869 is bigger than the path. Use +1 to move the zero byte too. */
3870 memmove(&path[1], path, strlen(path)+1);
3875 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3876 char *newp = Curl_dedotdotify(path);
3878 return CURLE_OUT_OF_MEMORY;
3880 if(strcmp(newp, path)) {
3882 free(data->state.pathbuffer);
3883 data->state.pathbuffer = newp;
3884 data->state.path = newp;
3892 * "rebuild_url" means that one or more URL components have been modified so
3893 * we need to generate an updated full version. We need the corrected URL
3894 * when communicating over HTTP proxy and we don't know at this point if
3895 * we're using a proxy or not.
3900 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3902 size_t urllen = strlen(data->change.url); /* original URL length */
3904 size_t prefixlen = strlen(conn->host.name);
3907 prefixlen += strlen(protop) + strlen("://");
3909 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3911 return CURLE_OUT_OF_MEMORY;
3913 /* copy the prefix */
3914 memcpy(reurl, data->change.url, prefixlen);
3916 /* append the trailing piece + zerobyte */
3917 memcpy(&reurl[prefixlen], path, plen + 1);
3919 /* possible free the old one */
3920 if(data->change.url_alloc) {
3921 Curl_safefree(data->change.url);
3922 data->change.url_alloc = FALSE;
3925 infof(data, "Rebuilt URL to: %s\n", reurl);
3927 data->change.url = reurl;
3928 data->change.url_alloc = TRUE; /* free this later */
3932 * Parse the login details from the URL and strip them out of
3935 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3936 if(result != CURLE_OK)
3939 if(conn->host.name[0] == '[') {
3940 /* This looks like an IPv6 address literal. See if there is an address
3942 char *percent = strstr (conn->host.name, "%25");
3945 unsigned long scope = strtoul (percent + 3, &endp, 10);
3947 /* The address scope was well formed. Knock it out of the
3949 memmove(percent, endp, strlen(endp)+1);
3950 if(!data->state.this_is_a_follow)
3951 /* Don't honour a scope given in a Location: header */
3952 conn->scope = (unsigned int)scope;
3955 infof(data, "Invalid IPv6 address format\n");
3960 /* Override any scope that was set above. */
3961 conn->scope = data->set.scope;
3963 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3964 last part of the URI. We are looking for the first '#' so that we deal
3965 gracefully with non conformant URI such as http://example.com#foo#bar. */
3966 fragment = strchr(path, '#');
3970 /* we know the path part ended with a fragment, so we know the full URL
3971 string does too and we need to cut it off from there so it isn't used
3973 fragment = strchr(data->change.url, '#');
3979 * So if the URL was A://B/C#D,
3981 * conn->host.name is B
3982 * data->state.path is /C
3985 return findprotocol(data, conn, protop);
3989 * If we're doing a resumed transfer, we need to setup our stuff
3992 static CURLcode setup_range(struct SessionHandle *data)
3994 struct UrlState *s = &data->state;
3995 s->resume_from = data->set.set_resume_from;
3996 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3997 if(s->rangestringalloc)
4001 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4003 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4005 s->rangestringalloc = (s->range)?TRUE:FALSE;
4008 return CURLE_OUT_OF_MEMORY;
4010 /* tell ourselves to fetch this range */
4011 s->use_range = TRUE; /* enable range download */
4014 s->use_range = FALSE; /* disable range download */
4021 * setup_connection_internals() -
4023 * Setup connection internals specific to the requested protocol in the
4024 * SessionHandle. This is inited and setup before the connection is made but
4025 * is about the particular protocol that is to be used.
4027 * This MUST get called after proxy magic has been figured out.
4029 static CURLcode setup_connection_internals(struct connectdata *conn)
4031 const struct Curl_handler * p;
4034 /* in some case in the multi state-machine, we go back to the CONNECT state
4035 and then a second (or third or...) call to this function will be made
4036 without doing a DISCONNECT or DONE in between (since the connection is
4037 yet in place) and therefore this function needs to first make sure
4038 there's no lingering previous data allocated. */
4039 Curl_free_request_state(conn->data);
4041 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4042 conn->data->req.maxdownload = -1;
4044 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4046 /* Perform setup complement if some. */
4049 if(p->setup_connection) {
4050 result = (*p->setup_connection)(conn);
4052 if(result != CURLE_OK)
4055 p = conn->handler; /* May have changed. */
4059 /* we check for -1 here since if proxy was detected already, this
4060 was very likely already set to the proxy port */
4061 conn->port = p->defport;
4063 /* only if remote_port was not already parsed off the URL we use the
4064 default port number */
4065 if(!conn->remote_port)
4066 conn->remote_port = (unsigned short)conn->given->defport;
4072 * Curl_free_request_state() should free temp data that was allocated in the
4073 * SessionHandle for this single request.
4076 void Curl_free_request_state(struct SessionHandle *data)
4078 Curl_safefree(data->req.protop);
4082 #ifndef CURL_DISABLE_PROXY
4083 /****************************************************************
4084 * Checks if the host is in the noproxy list. returns true if it matches
4085 * and therefore the proxy should NOT be used.
4086 ****************************************************************/
4087 static bool check_noproxy(const char* name, const char* no_proxy)
4089 /* no_proxy=domain1.dom,host.domain2.dom
4090 * (a comma-separated list of hosts which should
4091 * not be proxied, or an asterisk to override
4092 * all proxy variables)
4096 const char* separator = ", ";
4097 size_t no_proxy_len;
4101 if(no_proxy && no_proxy[0]) {
4102 if(Curl_raw_equal("*", no_proxy)) {
4106 /* NO_PROXY was specified and it wasn't just an asterisk */
4108 no_proxy_len = strlen(no_proxy);
4109 endptr = strchr(name, ':');
4111 namelen = endptr - name;
4113 namelen = strlen(name);
4115 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4116 while(tok_start < no_proxy_len &&
4117 strchr(separator, no_proxy[tok_start]) != NULL) {
4118 /* Look for the beginning of the token. */
4122 if(tok_start == no_proxy_len)
4123 break; /* It was all trailing separator chars, no more tokens. */
4125 for(tok_end = tok_start; tok_end < no_proxy_len &&
4126 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4127 /* Look for the end of the token. */
4130 /* To match previous behaviour, where it was necessary to specify
4131 * ".local.com" to prevent matching "notlocal.com", we will leave
4134 if(no_proxy[tok_start] == '.')
4137 if((tok_end - tok_start) <= namelen) {
4138 /* Match the last part of the name to the domain we are checking. */
4139 const char *checkn = name + namelen - (tok_end - tok_start);
4140 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4141 tok_end - tok_start)) {
4142 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4143 /* We either have an exact match, or the previous character is a .
4144 * so it is within the same domain, so no proxy for this host.
4149 } /* if((tok_end - tok_start) <= namelen) */
4150 } /* for(tok_start = 0; tok_start < no_proxy_len;
4151 tok_start = tok_end + 1) */
4152 } /* NO_PROXY was specified and it wasn't just an asterisk */
4157 /****************************************************************
4158 * Detect what (if any) proxy to use. Remember that this selects a host
4159 * name and is not limited to HTTP proxies only.
4160 * The returned pointer must be freed by the caller (unless NULL)
4161 ****************************************************************/
4162 static char *detect_proxy(struct connectdata *conn)
4166 #ifndef CURL_DISABLE_HTTP
4167 /* If proxy was not specified, we check for default proxy environment
4168 * variables, to enable i.e Lynx compliance:
4170 * http_proxy=http://some.server.dom:port/
4171 * https_proxy=http://some.server.dom:port/
4172 * ftp_proxy=http://some.server.dom:port/
4173 * no_proxy=domain1.dom,host.domain2.dom
4174 * (a comma-separated list of hosts which should
4175 * not be proxied, or an asterisk to override
4176 * all proxy variables)
4177 * all_proxy=http://some.server.dom:port/
4178 * (seems to exist for the CERN www lib. Probably
4179 * the first to check for.)
4181 * For compatibility, the all-uppercase versions of these variables are
4182 * checked if the lowercase versions don't exist.
4184 char *no_proxy=NULL;
4185 char proxy_env[128];
4187 no_proxy=curl_getenv("no_proxy");
4189 no_proxy=curl_getenv("NO_PROXY");
4191 if(!check_noproxy(conn->host.name, no_proxy)) {
4192 /* It was not listed as without proxy */
4193 const char *protop = conn->handler->scheme;
4194 char *envp = proxy_env;
4197 /* Now, build <protocol>_proxy and check for such a one to use */
4199 *envp++ = (char)tolower((int)*protop++);
4202 strcpy(envp, "_proxy");
4204 /* read the protocol proxy: */
4205 prox=curl_getenv(proxy_env);
4208 * We don't try the uppercase version of HTTP_PROXY because of
4211 * When curl is used in a webserver application
4212 * environment (cgi or php), this environment variable can
4213 * be controlled by the web server user by setting the
4214 * http header 'Proxy:' to some value.
4216 * This can cause 'internal' http/ftp requests to be
4217 * arbitrarily redirected by any external attacker.
4219 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4220 /* There was no lowercase variable, try the uppercase version: */
4221 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4222 prox=curl_getenv(proxy_env);
4225 if(prox && *prox) { /* don't count "" strings */
4226 proxy = prox; /* use this */
4229 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4231 proxy=curl_getenv("ALL_PROXY");
4233 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4238 #else /* !CURL_DISABLE_HTTP */
4241 #endif /* CURL_DISABLE_HTTP */
4247 * If this is supposed to use a proxy, we need to figure out the proxy
4248 * host name, so that we can re-use an existing connection
4249 * that may exist registered to the same proxy host.
4250 * proxy will be freed before this function returns.
4252 static CURLcode parse_proxy(struct SessionHandle *data,
4253 struct connectdata *conn, char *proxy)
4258 /* We use 'proxyptr' to point to the proxy name from now on... */
4263 /* We do the proxy host string parsing here. We want the host name and the
4264 * port name. Accept a protocol:// prefix
4267 /* Parse the protocol part if present */
4268 endofprot = strstr(proxy, "://");
4270 proxyptr = endofprot+3;
4271 if(checkprefix("socks5h", proxy))
4272 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4273 else if(checkprefix("socks5", proxy))
4274 conn->proxytype = CURLPROXY_SOCKS5;
4275 else if(checkprefix("socks4a", proxy))
4276 conn->proxytype = CURLPROXY_SOCKS4A;
4277 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4278 conn->proxytype = CURLPROXY_SOCKS4;
4279 /* Any other xxx:// : change to http proxy */
4282 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4284 /* Is there a username and password given in this proxy url? */
4285 atsign = strchr(proxyptr, '@');
4287 CURLcode res = CURLE_OK;
4288 char *proxyuser = NULL;
4289 char *proxypasswd = NULL;
4291 res = parse_login_details(proxyptr, atsign - proxyptr,
4292 &proxyuser, &proxypasswd, NULL);
4294 /* found user and password, rip them out. note that we are
4295 unescaping them, as there is otherwise no way to have a
4296 username or password with reserved characters like ':' in
4298 Curl_safefree(conn->proxyuser);
4299 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4300 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4302 conn->proxyuser = strdup("");
4304 if(!conn->proxyuser)
4305 res = CURLE_OUT_OF_MEMORY;
4307 Curl_safefree(conn->proxypasswd);
4308 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4309 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4311 conn->proxypasswd = strdup("");
4313 if(!conn->proxypasswd)
4314 res = CURLE_OUT_OF_MEMORY;
4318 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4319 atsign++; /* the right side of the @-letter */
4322 proxyptr = atsign; /* now use this instead */
4324 res = CURLE_OUT_OF_MEMORY;
4328 Curl_safefree(proxyuser);
4329 Curl_safefree(proxypasswd);
4335 /* start scanning for port number at this point */
4338 /* detect and extract RFC2732-style IPv6-addresses */
4339 if(*proxyptr == '[') {
4340 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4341 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4345 /* yeps, it ended nicely with a bracket as well */
4348 infof(data, "Invalid IPv6 address format\n");
4350 /* Note that if this didn't end with a bracket, we still advanced the
4351 * proxyptr first, but I can't see anything wrong with that as no host
4352 * name nor a numeric can legally start with a bracket.
4356 /* Get port number off proxy.server.com:1080 */
4357 prox_portno = strchr(portptr, ':');
4359 *prox_portno = 0x0; /* cut off number from host name */
4361 /* now set the local port number */
4362 conn->port = strtol(prox_portno, NULL, 10);
4365 if(proxyptr[0]=='/')
4366 /* If the first character in the proxy string is a slash, fail
4367 immediately. The following code will otherwise clear the string which
4368 will lead to code running as if no proxy was set! */
4369 return CURLE_COULDNT_RESOLVE_PROXY;
4371 /* without a port number after the host name, some people seem to use
4372 a slash so we strip everything from the first slash */
4373 atsign = strchr(proxyptr, '/');
4375 *atsign = 0x0; /* cut off path part from host name */
4377 if(data->set.proxyport)
4378 /* None given in the proxy string, then get the default one if it is
4380 conn->port = data->set.proxyport;
4383 /* now, clone the cleaned proxy host name */
4384 conn->proxy.rawalloc = strdup(proxyptr);
4385 conn->proxy.name = conn->proxy.rawalloc;
4387 if(!conn->proxy.rawalloc)
4388 return CURLE_OUT_OF_MEMORY;
4394 * Extract the user and password from the authentication string
4396 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4397 struct connectdata *conn)
4399 char proxyuser[MAX_CURL_USER_LENGTH]="";
4400 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4402 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4403 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4404 MAX_CURL_USER_LENGTH);
4405 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4407 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4408 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4409 MAX_CURL_PASSWORD_LENGTH);
4410 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4413 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4414 if(!conn->proxyuser)
4415 return CURLE_OUT_OF_MEMORY;
4417 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4418 if(!conn->proxypasswd)
4419 return CURLE_OUT_OF_MEMORY;
4423 #endif /* CURL_DISABLE_PROXY */
4428 * Parse the login details (user name, password and options) from the URL and
4429 * strip them out of the host name
4431 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4434 * Outputs: (almost :- all currently undefined)
4435 * conn->bits.user_passwd - non-zero if non-default passwords exist
4436 * user - non-zero length if defined
4437 * passwd - non-zero length if defined
4438 * options - non-zero length if defined
4439 * conn->host.name - remove user name and password
4441 static CURLcode parse_url_login(struct SessionHandle *data,
4442 struct connectdata *conn,
4443 char **user, char **passwd, char **options)
4445 CURLcode result = CURLE_OK;
4447 char *passwdp = NULL;
4448 char *optionsp = NULL;
4450 /* At this point, we're hoping all the other special cases have
4451 * been taken care of, so conn->host.name is at most
4452 * [user[:password][;options]]@]hostname
4454 * We need somewhere to put the embedded details, so do that first.
4457 char *ptr = strchr(conn->host.name, '@');
4458 char *login = conn->host.name;
4460 DEBUGASSERT(!**user);
4461 DEBUGASSERT(!**passwd);
4462 DEBUGASSERT(!**options);
4467 /* We will now try to extract the
4468 * possible login information in a string like:
4469 * ftp://user:password@ftp.my.site:8021/README */
4470 conn->host.name = ++ptr;
4472 /* So the hostname is sane. Only bother interpreting the
4473 * results if we could care. It could still be wasted
4474 * work because it might be overtaken by the programmatically
4475 * set user/passwd, but doing that first adds more cases here :-(
4478 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4481 /* We could use the login information in the URL so extract it */
4482 result = parse_login_details(login, ptr - login - 1,
4483 &userp, &passwdp, &optionsp);
4484 if(result != CURLE_OK)
4490 /* We have a user in the URL */
4491 conn->bits.userpwd_in_url = TRUE;
4492 conn->bits.user_passwd = TRUE; /* enable user+password */
4494 /* Decode the user */
4495 newname = curl_easy_unescape(data, userp, 0, NULL);
4497 result = CURLE_OUT_OF_MEMORY;
4506 /* We have a password in the URL so decode it */
4507 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4509 result = CURLE_OUT_OF_MEMORY;
4514 *passwd = newpasswd;
4518 /* We have an options list in the URL so decode it */
4519 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4521 result = CURLE_OUT_OF_MEMORY;
4526 *options = newoptions;
4532 Curl_safefree(userp);
4533 Curl_safefree(passwdp);
4534 Curl_safefree(optionsp);
4540 * parse_login_details()
4542 * This is used to parse a login string for user name, password and options in
4543 * the following formats:
4547 * user:password;options
4549 * user;options:password
4557 * login [in] - The login string.
4558 * len [in] - The length of the login string.
4559 * userp [in/out] - The address where a pointer to newly allocated memory
4560 * holding the user will be stored upon completion.
4561 * passdwp [in/out] - The address where a pointer to newly allocated memory
4562 * holding the password will be stored upon completion.
4563 * optionsp [in/out] - The address where a pointer to newly allocated memory
4564 * holding the options will be stored upon completion.
4566 * Returns CURLE_OK on success.
4568 static CURLcode parse_login_details(const char *login, const size_t len,
4569 char **userp, char **passwdp,
4572 CURLcode result = CURLE_OK;
4576 const char *psep = NULL;
4577 const char *osep = NULL;
4582 /* Attempt to find the password separator */
4584 psep = strchr(login, ':');
4586 /* Within the constraint of the login string */
4587 if(psep >= login + len)
4591 /* Attempt to find the options separator */
4593 osep = strchr(login, ';');
4595 /* Within the constraint of the login string */
4596 if(osep >= login + len)
4600 /* Calculate the portion lengths */
4602 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4603 (osep ? (size_t)(osep - login) : len));
4605 (osep && osep > psep ? (size_t)(osep - psep) :
4606 (size_t)(login + len - psep)) - 1 : 0);
4608 (psep && psep > osep ? (size_t)(psep - osep) :
4609 (size_t)(login + len - osep)) - 1 : 0);
4611 /* Allocate the user portion buffer */
4613 ubuf = malloc(ulen + 1);
4615 result = CURLE_OUT_OF_MEMORY;
4618 /* Allocate the password portion buffer */
4619 if(!result && passwdp && plen) {
4620 pbuf = malloc(plen + 1);
4622 Curl_safefree(ubuf);
4623 result = CURLE_OUT_OF_MEMORY;
4627 /* Allocate the options portion buffer */
4628 if(!result && optionsp && olen) {
4629 obuf = malloc(olen + 1);
4631 Curl_safefree(pbuf);
4632 Curl_safefree(ubuf);
4633 result = CURLE_OUT_OF_MEMORY;
4638 /* Store the user portion if necessary */
4640 memcpy(ubuf, login, ulen);
4642 Curl_safefree(*userp);
4646 /* Store the password portion if necessary */
4648 memcpy(pbuf, psep + 1, plen);
4650 Curl_safefree(*passwdp);
4654 /* Store the options portion if necessary */
4656 memcpy(obuf, osep + 1, olen);
4658 Curl_safefree(*optionsp);
4666 /*************************************************************
4667 * Figure out the remote port number and fix it in the URL
4669 * No matter if we use a proxy or not, we have to figure out the remote
4670 * port number of various reasons.
4672 * To be able to detect port number flawlessly, we must not confuse them
4673 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4675 * The conn->host.name is currently [user:passwd@]host[:port] where host
4676 * could be a hostname, IPv4 address or IPv6 address.
4678 * The port number embedded in the URL is replaced, if necessary.
4679 *************************************************************/
4680 static CURLcode parse_remote_port(struct SessionHandle *data,
4681 struct connectdata *conn)
4686 /* Note that at this point, the IPv6 address cannot contain any scope
4687 suffix as that has already been removed in the parseurlandfillconn()
4689 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4691 (']' == endbracket)) {
4692 /* this is a RFC2732-style specified IP-address */
4693 conn->bits.ipv6_ip = TRUE;
4695 conn->host.name++; /* skip over the starting bracket */
4696 portptr = strchr(conn->host.name, ']');
4698 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4700 portptr = NULL; /* no port number available */
4705 struct in6_addr in6;
4706 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4707 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4709 failf(data, "IPv6 numerical address used in URL without brackets");
4710 return CURLE_URL_MALFORMAT;
4714 portptr = strrchr(conn->host.name, ':');
4717 if(data->set.use_port && data->state.allow_port) {
4718 /* if set, we use this and ignore the port possibly given in the URL */
4719 conn->remote_port = (unsigned short)data->set.use_port;
4721 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4722 number - since the port number is to be ignored! */
4723 if(conn->bits.httpproxy) {
4724 /* we need to create new URL with the new port number */
4728 if(conn->bits.type_set)
4729 snprintf(type, sizeof(type), ";type=%c",
4730 data->set.prefer_ascii?'A':
4731 (data->set.ftp_list_only?'D':'I'));
4734 * This synthesized URL isn't always right--suffixes like ;type=A are
4735 * stripped off. It would be better to work directly from the original
4736 * URL and simply replace the port part of it.
4738 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4739 conn->bits.ipv6_ip?"[":"", conn->host.name,
4740 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4741 data->state.slash_removed?"/":"", data->state.path,
4744 return CURLE_OUT_OF_MEMORY;
4746 if(data->change.url_alloc) {
4747 Curl_safefree(data->change.url);
4748 data->change.url_alloc = FALSE;
4751 data->change.url = url;
4752 data->change.url_alloc = TRUE;
4756 /* no CURLOPT_PORT given, extract the one from the URL */
4761 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4763 if(rest != (portptr+1) && *rest == '\0') {
4764 /* The colon really did have only digits after it,
4765 * so it is either a port number or a mistake */
4767 if(port > 0xffff) { /* Single unix standard says port numbers are
4769 failf(data, "Port number too large: %lu", port);
4770 return CURLE_URL_MALFORMAT;
4773 *portptr = '\0'; /* cut off the name there */
4774 conn->remote_port = curlx_ultous(port);
4777 /* Browser behavior adaptation. If there's a colon with no digits after,
4778 just cut off the name there which makes us ignore the colon and just
4779 use the default port. Firefox and Chrome both do that. */
4786 * Override the login details from the URL with that in the CURLOPT_USERPWD
4787 * option or a .netrc file, if applicable.
4789 static CURLcode override_login(struct SessionHandle *data,
4790 struct connectdata *conn,
4791 char **userp, char **passwdp, char **optionsp)
4793 if(data->set.str[STRING_USERNAME]) {
4795 *userp = strdup(data->set.str[STRING_USERNAME]);
4797 return CURLE_OUT_OF_MEMORY;
4800 if(data->set.str[STRING_PASSWORD]) {
4802 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4804 return CURLE_OUT_OF_MEMORY;
4807 if(data->set.str[STRING_OPTIONS]) {
4809 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4811 return CURLE_OUT_OF_MEMORY;
4814 conn->bits.netrc = FALSE;
4815 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4816 int ret = Curl_parsenetrc(conn->host.name,
4818 data->set.str[STRING_NETRC_FILE]);
4820 infof(data, "Couldn't find host %s in the "
4821 DOT_CHAR "netrc file; using defaults\n",
4825 return CURLE_OUT_OF_MEMORY;
4828 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4829 file, so that it is safe to use even if we followed a Location: to a
4830 different host or similar. */
4831 conn->bits.netrc = TRUE;
4833 conn->bits.user_passwd = TRUE; /* enable user+password */
4841 * Set the login details so they're available in the connection
4843 static CURLcode set_login(struct connectdata *conn,
4844 const char *user, const char *passwd,
4845 const char *options)
4847 CURLcode result = CURLE_OK;
4849 /* If our protocol needs a password and we have none, use the defaults */
4850 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4851 /* Store the default user */
4852 conn->user = strdup(CURL_DEFAULT_USER);
4854 /* Store the default password */
4856 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4858 conn->passwd = NULL;
4860 /* This is the default password, so DON'T set conn->bits.user_passwd */
4863 /* Store the user, zero-length if not set */
4864 conn->user = strdup(user);
4866 /* Store the password (only if user is present), zero-length if not set */
4868 conn->passwd = strdup(passwd);
4870 conn->passwd = NULL;
4873 if(!conn->user || !conn->passwd)
4874 result = CURLE_OUT_OF_MEMORY;
4876 /* Store the options, null if not set */
4877 if(!result && options[0]) {
4878 conn->options = strdup(options);
4881 result = CURLE_OUT_OF_MEMORY;
4887 /*************************************************************
4888 * Resolve the address of the server or proxy
4889 *************************************************************/
4890 static CURLcode resolve_server(struct SessionHandle *data,
4891 struct connectdata *conn,
4894 CURLcode result=CURLE_OK;
4895 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4897 /*************************************************************
4898 * Resolve the name of the server or proxy
4899 *************************************************************/
4900 if(conn->bits.reuse)
4901 /* We're reusing the connection - no need to resolve anything, and
4902 fix_hostname() was called already in create_conn() for the re-use
4907 /* this is a fresh connect */
4909 struct Curl_dns_entry *hostaddr;
4911 /* set a pointer to the hostname we display */
4912 fix_hostname(data, conn, &conn->host);
4914 if(!conn->proxy.name || !*conn->proxy.name) {
4915 /* If not connecting via a proxy, extract the port from the URL, if it is
4916 * there, thus overriding any defaults that might have been set above. */
4917 conn->port = conn->remote_port; /* it is the same port */
4919 /* Resolve target host right on */
4920 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4921 &hostaddr, timeout_ms);
4922 if(rc == CURLRESOLV_PENDING)
4925 else if(rc == CURLRESOLV_TIMEDOUT)
4926 result = CURLE_OPERATION_TIMEDOUT;
4928 else if(!hostaddr) {
4929 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4930 result = CURLE_COULDNT_RESOLVE_HOST;
4931 /* don't return yet, we need to clean up the timeout first */
4935 /* This is a proxy that hasn't been resolved yet. */
4937 /* IDN-fix the proxy name */
4938 fix_hostname(data, conn, &conn->proxy);
4941 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4942 &hostaddr, timeout_ms);
4944 if(rc == CURLRESOLV_PENDING)
4947 else if(rc == CURLRESOLV_TIMEDOUT)
4948 result = CURLE_OPERATION_TIMEDOUT;
4950 else if(!hostaddr) {
4951 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4952 result = CURLE_COULDNT_RESOLVE_PROXY;
4953 /* don't return yet, we need to clean up the timeout first */
4956 DEBUGASSERT(conn->dns_entry == NULL);
4957 conn->dns_entry = hostaddr;
4964 * Cleanup the connection just allocated before we can move along and use the
4965 * previously existing one. All relevant data is copied over and old_conn is
4966 * ready for freeing once this function returns.
4968 static void reuse_conn(struct connectdata *old_conn,
4969 struct connectdata *conn)
4971 if(old_conn->proxy.rawalloc)
4972 free(old_conn->proxy.rawalloc);
4974 /* free the SSL config struct from this connection struct as this was
4975 allocated in vain and is targeted for destruction */
4976 Curl_free_ssl_config(&old_conn->ssl_config);
4978 conn->data = old_conn->data;
4980 /* get the user+password information from the old_conn struct since it may
4981 * be new for this request even when we re-use an existing connection */
4982 conn->bits.user_passwd = old_conn->bits.user_passwd;
4983 if(conn->bits.user_passwd) {
4984 /* use the new user name and password though */
4985 Curl_safefree(conn->user);
4986 Curl_safefree(conn->passwd);
4987 conn->user = old_conn->user;
4988 conn->passwd = old_conn->passwd;
4989 old_conn->user = NULL;
4990 old_conn->passwd = NULL;
4993 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4994 if(conn->bits.proxy_user_passwd) {
4995 /* use the new proxy user name and proxy password though */
4996 Curl_safefree(conn->proxyuser);
4997 Curl_safefree(conn->proxypasswd);
4998 conn->proxyuser = old_conn->proxyuser;
4999 conn->proxypasswd = old_conn->proxypasswd;
5000 old_conn->proxyuser = NULL;
5001 old_conn->proxypasswd = NULL;
5004 /* host can change, when doing keepalive with a proxy or if the case is
5005 different this time etc */
5006 Curl_safefree(conn->host.rawalloc);
5007 conn->host=old_conn->host;
5009 /* persist connection info in session handle */
5010 Curl_persistconninfo(conn);
5013 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5015 Curl_safefree(old_conn->user);
5016 Curl_safefree(old_conn->passwd);
5017 Curl_safefree(old_conn->proxyuser);
5018 Curl_safefree(old_conn->proxypasswd);
5019 Curl_safefree(old_conn->localdev);
5021 Curl_llist_destroy(old_conn->send_pipe, NULL);
5022 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5024 old_conn->send_pipe = NULL;
5025 old_conn->recv_pipe = NULL;
5027 Curl_safefree(old_conn->master_buffer);
5031 * create_conn() sets up a new connectdata struct, or re-uses an already
5032 * existing one, and resolves host name.
5034 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5035 * response will be coming asynchronously. If *async is FALSE, the name is
5038 * @param data The sessionhandle pointer
5039 * @param in_connect is set to the next connection data pointer
5040 * @param async is set TRUE when an async DNS resolution is pending
5041 * @see Curl_setup_conn()
5043 * *NOTE* this function assigns the conn->data pointer!
5046 static CURLcode create_conn(struct SessionHandle *data,
5047 struct connectdata **in_connect,
5050 CURLcode result = CURLE_OK;
5051 struct connectdata *conn;
5052 struct connectdata *conn_temp = NULL;
5055 char *passwd = NULL;
5056 char *options = NULL;
5059 bool prot_missing = FALSE;
5060 bool no_connections_available = FALSE;
5062 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5063 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5067 /*************************************************************
5069 *************************************************************/
5071 if(!data->change.url) {
5072 result = CURLE_URL_MALFORMAT;
5076 /* First, split up the current URL in parts so that we can use the
5077 parts for checking against the already present connections. In order
5078 to not have to modify everything at once, we allocate a temporary
5079 connection data struct and fill in for comparison purposes. */
5080 conn = allocate_conn(data);
5083 result = CURLE_OUT_OF_MEMORY;
5087 /* We must set the return variable as soon as possible, so that our
5088 parent can cleanup any possible allocs we may have done before
5092 /* This initing continues below, see the comment "Continue connectdata
5093 * initialization here" */
5095 /***********************************************************
5096 * We need to allocate memory to store the path in. We get the size of the
5097 * full URL to be sure, and we need to make it at least 256 bytes since
5098 * other parts of the code will rely on this fact
5099 ***********************************************************/
5100 #define LEAST_PATH_ALLOC 256
5101 urllen=strlen(data->change.url);
5102 if(urllen < LEAST_PATH_ALLOC)
5103 urllen=LEAST_PATH_ALLOC;
5106 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5107 * 1 - an extra terminating zero
5108 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5111 Curl_safefree(data->state.pathbuffer);
5112 data->state.path = NULL;
5114 data->state.pathbuffer = malloc(urllen+2);
5115 if(NULL == data->state.pathbuffer) {
5116 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5119 data->state.path = data->state.pathbuffer;
5121 conn->host.rawalloc = malloc(urllen+2);
5122 if(NULL == conn->host.rawalloc) {
5123 Curl_safefree(data->state.pathbuffer);
5124 data->state.path = NULL;
5125 result = CURLE_OUT_OF_MEMORY;
5129 conn->host.name = conn->host.rawalloc;
5130 conn->host.name[0] = 0;
5133 passwd = strdup("");
5134 options = strdup("");
5135 if(!user || !passwd || !options) {
5136 result = CURLE_OUT_OF_MEMORY;
5140 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5142 if(result != CURLE_OK)
5145 /*************************************************************
5146 * No protocol part in URL was used, add it!
5147 *************************************************************/
5149 /* We're guessing prefixes here and if we're told to use a proxy or if
5150 we're gonna follow a Location: later or... then we need the protocol
5151 part added so that we have a valid URL. */
5154 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5157 result = CURLE_OUT_OF_MEMORY;
5161 if(data->change.url_alloc) {
5162 Curl_safefree(data->change.url);
5163 data->change.url_alloc = FALSE;
5166 data->change.url = reurl;
5167 data->change.url_alloc = TRUE; /* free this later */
5170 /*************************************************************
5171 * If the protocol can't handle url query strings, then cut
5172 * of the unhandable part
5173 *************************************************************/
5174 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5175 char *path_q_sep = strchr(conn->data->state.path, '?');
5177 /* according to rfc3986, allow the query (?foo=bar)
5178 also on protocols that can't handle it.
5180 cut the string-part after '?'
5183 /* terminate the string */
5188 if(data->set.str[STRING_BEARER]) {
5189 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5190 if(!conn->xoauth2_bearer) {
5191 result = CURLE_OUT_OF_MEMORY;
5196 #ifndef CURL_DISABLE_PROXY
5197 /*************************************************************
5198 * Extract the user and password from the authentication string
5199 *************************************************************/
5200 if(conn->bits.proxy_user_passwd) {
5201 result = parse_proxy_auth(data, conn);
5202 if(result != CURLE_OK)
5206 /*************************************************************
5207 * Detect what (if any) proxy to use
5208 *************************************************************/
5209 if(data->set.str[STRING_PROXY]) {
5210 proxy = strdup(data->set.str[STRING_PROXY]);
5211 /* if global proxy is set, this is it */
5213 failf(data, "memory shortage");
5214 result = CURLE_OUT_OF_MEMORY;
5219 if(data->set.str[STRING_NOPROXY] &&
5220 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5222 free(proxy); /* proxy is in exception list */
5227 proxy = detect_proxy(conn);
5229 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5230 free(proxy); /* Don't bother with an empty proxy string or if the
5231 protocol doesn't work with network */
5235 /***********************************************************************
5236 * If this is supposed to use a proxy, we need to figure out the proxy host
5237 * name, proxy type and port number, so that we can re-use an existing
5238 * connection that may exist registered to the same proxy host.
5239 ***********************************************************************/
5241 result = parse_proxy(data, conn, proxy);
5243 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5248 if((conn->proxytype == CURLPROXY_HTTP) ||
5249 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5250 #ifdef CURL_DISABLE_HTTP
5251 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5252 result = CURLE_UNSUPPORTED_PROTOCOL;
5255 /* force this connection's protocol to become HTTP if not already
5256 compatible - if it isn't tunneling through */
5257 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5258 !conn->bits.tunnel_proxy)
5259 conn->handler = &Curl_handler_http;
5261 conn->bits.httpproxy = TRUE;
5265 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5266 conn->bits.proxy = TRUE;
5269 /* we aren't using the proxy after all... */
5270 conn->bits.proxy = FALSE;
5271 conn->bits.httpproxy = FALSE;
5272 conn->bits.proxy_user_passwd = FALSE;
5273 conn->bits.tunnel_proxy = FALSE;
5276 #endif /* CURL_DISABLE_PROXY */
5278 /*************************************************************
5279 * If the protocol is using SSL and HTTP proxy is used, we set
5280 * the tunnel_proxy bit.
5281 *************************************************************/
5282 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5283 conn->bits.tunnel_proxy = TRUE;
5285 /*************************************************************
5286 * Figure out the remote port number and fix it in the URL
5287 *************************************************************/
5288 result = parse_remote_port(data, conn);
5289 if(result != CURLE_OK)
5292 /* Check for overridden login details and set them accordingly so they
5293 they are known when protocol->setup_connection is called! */
5294 result = override_login(data, conn, &user, &passwd, &options);
5295 if(result != CURLE_OK)
5297 result = set_login(conn, user, passwd, options);
5298 if(result != CURLE_OK)
5301 /*************************************************************
5302 * Setup internals depending on protocol. Needs to be done after
5303 * we figured out what/if proxy to use.
5304 *************************************************************/
5305 result = setup_connection_internals(conn);
5306 if(result != CURLE_OK)
5309 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5310 conn->send[FIRSTSOCKET] = Curl_send_plain;
5311 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5312 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5314 /***********************************************************************
5315 * file: is a special case in that it doesn't need a network connection
5316 ***********************************************************************/
5317 #ifndef CURL_DISABLE_FILE
5318 if(conn->handler->flags & PROTOPT_NONETWORK) {
5320 /* this is supposed to be the connect function so we better at least check
5321 that the file is present here! */
5322 DEBUGASSERT(conn->handler->connect_it);
5323 result = conn->handler->connect_it(conn, &done);
5325 /* Setup a "faked" transfer that'll do nothing */
5326 if(CURLE_OK == result) {
5328 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5330 ConnectionStore(data, conn);
5333 * Setup whatever necessary for a resumed transfer
5335 result = setup_range(data);
5337 DEBUGASSERT(conn->handler->done);
5338 /* we ignore the return code for the protocol-specific DONE */
5339 (void)conn->handler->done(conn, result, FALSE);
5343 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5344 -1, NULL); /* no upload */
5347 /* since we skip do_init() */
5354 /* Get a cloned copy of the SSL config situation stored in the
5355 connection struct. But to get this going nicely, we must first make
5356 sure that the strings in the master copy are pointing to the correct
5357 strings in the session handle strings array!
5359 Keep in mind that the pointers in the master copy are pointing to strings
5360 that will be freed as part of the SessionHandle struct, but all cloned
5361 copies will be separately allocated.
5363 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5364 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5365 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5366 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5367 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5368 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5369 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5371 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5372 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5375 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5376 result = CURLE_OUT_OF_MEMORY;
5380 /*************************************************************
5381 * Check the current list of connections to see if we can
5382 * re-use an already existing one or if we have to create a
5384 *************************************************************/
5386 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5387 we only acknowledge this option if this is not a re-used connection
5388 already (which happens due to follow-location or during a HTTP
5389 authentication phase). */
5390 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5393 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5395 /* If we found a reusable connection, we may still want to
5396 open a new connection if we are pipelining. */
5397 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5398 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5400 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5401 conn_temp->connection_id, pipelen);
5403 if(conn_temp->bundle->num_connections < max_host_connections &&
5404 data->state.conn_cache->num_connections < max_total_connections) {
5405 /* We want a new connection anyway */
5408 infof(data, "We can reuse, but we want a new connection anyway\n");
5415 * We already have a connection for this, we got the former connection
5416 * in the conn_temp variable and thus we need to cleanup the one we
5417 * just allocated before we can move along and use the previously
5420 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5421 handle in a multi stack may nick it */
5422 reuse_conn(conn, conn_temp);
5423 free(conn); /* we don't need this anymore */
5427 /* set a pointer to the hostname we display */
5428 fix_hostname(data, conn, &conn->host);
5430 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5431 conn->connection_id,
5432 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5435 /* We have decided that we want a new connection. However, we may not
5436 be able to do that if we have reached the limit of how many
5437 connections we are allowed to open. */
5438 struct connectbundle *bundle;
5440 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5442 if(max_host_connections > 0 && bundle &&
5443 (bundle->num_connections >= max_host_connections)) {
5444 struct connectdata *conn_candidate;
5446 /* The bundle is full. Let's see if we can kill a connection. */
5447 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5449 if(conn_candidate) {
5450 /* Set the connection's owner correctly, then kill it */
5451 conn_candidate->data = data;
5452 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5455 no_connections_available = TRUE;
5458 if(max_total_connections > 0 &&
5459 (data->state.conn_cache->num_connections >= max_total_connections)) {
5460 struct connectdata *conn_candidate;
5462 /* The cache is full. Let's see if we can kill a connection. */
5463 conn_candidate = find_oldest_idle_connection(data);
5465 if(conn_candidate) {
5466 /* Set the connection's owner correctly, then kill it */
5467 conn_candidate->data = data;
5468 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5471 no_connections_available = TRUE;
5475 if(no_connections_available) {
5476 infof(data, "No connections available.\n");
5481 result = CURLE_NO_CONNECTION_AVAILABLE;
5486 * This is a brand new connection, so let's store it in the connection
5489 ConnectionStore(data, conn);
5493 /* Mark the connection as used */
5496 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5500 * Setup whatever necessary for a resumed transfer
5502 result = setup_range(data);
5506 /* Continue connectdata initialization here. */
5509 * Inherit the proper values from the urldata struct AFTER we have arranged
5510 * the persistent connection stuff
5512 conn->fread_func = data->set.fread_func;
5513 conn->fread_in = data->set.in;
5514 conn->seek_func = data->set.seek_func;
5515 conn->seek_client = data->set.seek_client;
5517 /*************************************************************
5518 * Resolve the address of the server or proxy
5519 *************************************************************/
5520 result = resolve_server(data, conn, async);
5524 Curl_safefree(options);
5525 Curl_safefree(passwd);
5526 Curl_safefree(user);
5527 Curl_safefree(proxy);
5531 /* Curl_setup_conn() is called after the name resolve initiated in
5532 * create_conn() is all done.
5534 * Curl_setup_conn() also handles reused connections
5536 * conn->data MUST already have been setup fine (in create_conn)
5539 CURLcode Curl_setup_conn(struct connectdata *conn,
5540 bool *protocol_done)
5542 CURLcode result = CURLE_OK;
5543 struct SessionHandle *data = conn->data;
5545 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5547 if(conn->handler->flags & PROTOPT_NONETWORK) {
5548 /* nothing to setup when not using a network */
5549 *protocol_done = TRUE;
5552 *protocol_done = FALSE; /* default to not done */
5554 /* set proxy_connect_closed to false unconditionally already here since it
5555 is used strictly to provide extra information to a parent function in the
5556 case of proxy CONNECT failures and we must make sure we don't have it
5557 lingering set from a previous invoke */
5558 conn->bits.proxy_connect_closed = FALSE;
5561 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5562 * basically anything through a http proxy we can't limit this based on
5565 if(data->set.str[STRING_USERAGENT]) {
5566 Curl_safefree(conn->allocptr.uagent);
5567 conn->allocptr.uagent =
5568 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5569 if(!conn->allocptr.uagent)
5570 return CURLE_OUT_OF_MEMORY;
5573 data->req.headerbytecount = 0;
5575 #ifdef CURL_DO_LINEEND_CONV
5576 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5577 #endif /* CURL_DO_LINEEND_CONV */
5579 /* set start time here for timeout purposes in the connect procedure, it
5580 is later set again for the progress meter purpose */
5581 conn->now = Curl_tvnow();
5583 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5584 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5585 result = Curl_connecthost(conn, conn->dns_entry);
5590 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5591 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5592 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5593 *protocol_done = TRUE;
5594 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5595 Curl_verboseconnect(conn);
5598 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5599 set this here perhaps a second time */
5603 * This check is quite a hack. We're calling _fsetmode to fix the problem
5604 * with fwrite converting newline characters (you get mangled text files,
5605 * and corrupted binary files when you download to stdout and redirect it to
5609 if((data->set.out)->_handle == NULL) {
5610 _fsetmode(stdout, "b");
5617 CURLcode Curl_connect(struct SessionHandle *data,
5618 struct connectdata **in_connect,
5620 bool *protocol_done)
5624 *asyncp = FALSE; /* assume synchronous resolves by default */
5626 /* call the stuff that needs to be called */
5627 code = create_conn(data, in_connect, asyncp);
5629 if(CURLE_OK == code) {
5631 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5633 *protocol_done = TRUE;
5635 /* DNS resolution is done: that's either because this is a reused
5636 connection, in which case DNS was unnecessary, or because DNS
5637 really did finish already (synch resolver/fast async resolve) */
5638 code = Curl_setup_conn(*in_connect, protocol_done);
5642 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5647 if(code && *in_connect) {
5648 /* We're not allowed to return failure with memory left allocated
5649 in the connectdata struct, free those here */
5650 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5651 *in_connect = NULL; /* return a NULL */
5657 CURLcode Curl_done(struct connectdata **connp,
5658 CURLcode status, /* an error if this is called after an
5659 error was detected */
5663 struct connectdata *conn;
5664 struct SessionHandle *data;
5666 DEBUGASSERT(*connp);
5672 /* Stop if Curl_done() has already been called */
5675 Curl_getoff_all_pipelines(data, conn);
5677 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5678 !data->set.reuse_forbid &&
5680 /* Stop if pipeline is not empty and we do not have to close
5684 conn->bits.done = TRUE; /* called just now! */
5686 /* Cleanup possible redirect junk */
5687 if(data->req.newurl) {
5688 free(data->req.newurl);
5689 data->req.newurl = NULL;
5691 if(data->req.location) {
5692 free(data->req.location);
5693 data->req.location = NULL;
5696 Curl_resolver_cancel(conn);
5698 if(conn->dns_entry) {
5699 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5700 conn->dns_entry = NULL;
5704 case CURLE_ABORTED_BY_CALLBACK:
5705 case CURLE_READ_ERROR:
5706 case CURLE_WRITE_ERROR:
5707 /* When we're aborted due to a callback return code it basically have to
5708 be counted as premature as there is trouble ahead if we don't. We have
5709 many callbacks and protocols work differently, we could potentially do
5710 this more fine-grained in the future. */
5716 /* this calls the protocol-specific function pointer previously set */
5717 if(conn->handler->done)
5718 result = conn->handler->done(conn, status, premature);
5722 if(Curl_pgrsDone(conn) && !result)
5723 result = CURLE_ABORTED_BY_CALLBACK;
5725 /* if the transfer was completed in a paused state there can be buffered
5726 data left to write and then kill */
5727 if(data->state.tempwrite) {
5728 free(data->state.tempwrite);
5729 data->state.tempwrite = NULL;
5732 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5733 forced us to close this no matter what we think.
5735 if conn->bits.close is TRUE, it means that the connection should be
5736 closed in spite of all our efforts to be nice, due to protocol
5737 restrictions in our or the server's end
5739 if premature is TRUE, it means this connection was said to be DONE before
5740 the entire request operation is complete and thus we can't know in what
5741 state it is for re-using, so we're forced to close it. In a perfect world
5742 we can add code that keep track of if we really must close it here or not,
5743 but currently we have no such detail knowledge.
5745 if(data->set.reuse_forbid || conn->bits.close || premature) {
5746 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5748 /* If we had an error already, make sure we return that one. But
5749 if we got a new error, return that. */
5754 /* the connection is no longer in use */
5755 if(ConnectionDone(data, conn)) {
5756 /* remember the most recently used connection */
5757 data->state.lastconnect = conn;
5759 infof(data, "Connection #%ld to host %s left intact\n",
5760 conn->connection_id,
5761 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5764 data->state.lastconnect = NULL;
5767 *connp = NULL; /* to make the caller of this function better detect that
5768 this was either closed or handed over to the connection
5769 cache here, and therefore cannot be used from this point on
5771 Curl_free_request_state(data);
5777 * do_init() inits the readwrite session. This is inited each time (in the DO
5778 * function before the protocol-specific DO functions are invoked) for a
5779 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5780 * nothing in here depends on stuff that are setup dynamically for the
5784 static CURLcode do_init(struct connectdata *conn)
5786 struct SessionHandle *data = conn->data;
5787 struct SingleRequest *k = &data->req;
5789 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5790 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5791 data->state.expect100header = FALSE;
5793 if(data->set.opt_no_body)
5794 /* in HTTP lingo, no body means using the HEAD request... */
5795 data->set.httpreq = HTTPREQ_HEAD;
5796 else if(HTTPREQ_HEAD == data->set.httpreq)
5797 /* ... but if unset there really is no perfect method that is the
5798 "opposite" of HEAD but in reality most people probably think GET
5799 then. The important thing is that we can't let it remain HEAD if the
5800 opt_no_body is set FALSE since then we'll behave wrong when getting
5802 data->set.httpreq = HTTPREQ_GET;
5804 k->start = Curl_tvnow(); /* start time */
5805 k->now = k->start; /* current time is now */
5806 k->header = TRUE; /* assume header */
5810 k->buf = data->state.buffer;
5811 k->uploadbuf = data->state.uploadbuffer;
5812 k->hbufp = data->state.headerbuff;
5813 k->ignorebody=FALSE;
5815 Curl_speedinit(data);
5817 Curl_pgrsSetUploadCounter(data, 0);
5818 Curl_pgrsSetDownloadCounter(data, 0);
5824 * do_complete is called when the DO actions are complete.
5826 * We init chunking and trailer bits to their default values here immediately
5827 * before receiving any header data for the current request in the pipeline.
5829 static void do_complete(struct connectdata *conn)
5831 conn->data->req.chunk=FALSE;
5832 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5833 conn->sockfd:conn->writesockfd)+1;
5834 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5837 CURLcode Curl_do(struct connectdata **connp, bool *done)
5839 CURLcode result=CURLE_OK;
5840 struct connectdata *conn = *connp;
5841 struct SessionHandle *data = conn->data;
5843 if(conn->handler->do_it) {
5844 /* generic protocol-specific function pointer set in curl_connect() */
5845 result = conn->handler->do_it(conn, done);
5847 /* This was formerly done in transfer.c, but we better do it here */
5848 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5850 * If the connection is using an easy handle, call reconnect
5851 * to re-establish the connection. Otherwise, let the multi logic
5852 * figure out how to re-establish the connection.
5855 result = Curl_reconnect_request(connp);
5857 if(result == CURLE_OK) {
5858 /* ... finally back to actually retry the DO phase */
5859 conn = *connp; /* re-assign conn since Curl_reconnect_request
5860 creates a new connection */
5861 result = conn->handler->do_it(conn, done);
5868 if((result == CURLE_OK) && *done)
5869 /* do_complete must be called after the protocol-specific DO function */
5876 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5877 * second stage DO state which (wrongly) was introduced to support FTP's
5878 * second connection.
5880 * TODO: A future libcurl should be able to work away this state.
5882 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5883 * DOING state there's more work to do!
5886 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5888 CURLcode result=CURLE_OK;
5892 if(conn->handler->do_more)
5893 result = conn->handler->do_more(conn, complete);
5895 if(!result && (*complete == 1))
5896 /* do_complete must be called after the protocol-specific DO function */