1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2013, 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 */
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 *user, char *passwd, char *options);
148 static CURLcode parse_login_details(const char *login, const size_t len,
149 char **userptr, char **passwdptr,
155 static const struct Curl_handler * const protocols[] = {
157 #ifndef CURL_DISABLE_HTTP
161 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
165 #ifndef CURL_DISABLE_FTP
169 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
173 #ifndef CURL_DISABLE_TELNET
174 &Curl_handler_telnet,
177 #ifndef CURL_DISABLE_DICT
181 #ifndef CURL_DISABLE_LDAP
183 #if !defined(CURL_DISABLE_LDAPS) && \
184 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
185 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
190 #ifndef CURL_DISABLE_FILE
194 #ifndef CURL_DISABLE_TFTP
203 #ifndef CURL_DISABLE_IMAP
210 #ifndef CURL_DISABLE_POP3
217 #ifndef CURL_DISABLE_SMTP
224 #ifndef CURL_DISABLE_RTSP
228 #ifndef CURL_DISABLE_GOPHER
229 &Curl_handler_gopher,
236 &Curl_handler_rtmpte,
238 &Curl_handler_rtmpts,
241 (struct Curl_handler *) NULL
245 * Dummy handler for undefined protocol schemes.
248 static const struct Curl_handler Curl_handler_dummy = {
249 "<no protocol>", /* scheme */
250 ZERO_NULL, /* setup_connection */
251 ZERO_NULL, /* do_it */
252 ZERO_NULL, /* done */
253 ZERO_NULL, /* do_more */
254 ZERO_NULL, /* connect_it */
255 ZERO_NULL, /* connecting */
256 ZERO_NULL, /* doing */
257 ZERO_NULL, /* proto_getsock */
258 ZERO_NULL, /* doing_getsock */
259 ZERO_NULL, /* domore_getsock */
260 ZERO_NULL, /* perform_getsock */
261 ZERO_NULL, /* disconnect */
262 ZERO_NULL, /* readwrite */
265 PROTOPT_NONE /* flags */
268 void Curl_freeset(struct SessionHandle *data)
270 /* Free all dynamic strings stored in the data->set substructure. */
272 for(i=(enum dupstring)0; i < STRING_LAST; i++)
273 Curl_safefree(data->set.str[i]);
275 if(data->change.referer_alloc) {
276 Curl_safefree(data->change.referer);
277 data->change.referer_alloc = FALSE;
279 data->change.referer = NULL;
282 static CURLcode setstropt(char **charp, char *s)
284 /* Release the previous storage at `charp' and replace by a dynamic storage
285 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
287 Curl_safefree(*charp);
293 return CURLE_OUT_OF_MEMORY;
301 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp,
304 CURLcode result = CURLE_OK;
307 char *options = NULL;
309 /* Parse the login details if specified. It not then we treat NULL as a hint
310 to clear the existing data */
312 result = parse_login_details(option, strlen(option),
313 (userp ? &user : NULL),
314 (passwdp ? &passwd : NULL),
315 (optionsp ? &options : NULL));
319 /* Store the username part of option if required */
321 if(!user && option && option[0] == ':') {
322 /* Allocate an empty string instead of returning NULL as user name */
325 result = CURLE_OUT_OF_MEMORY;
328 Curl_safefree(*userp);
332 /* Store the password part of option if required */
334 Curl_safefree(*passwdp);
338 /* Store the options part of option if required */
340 Curl_safefree(*optionsp);
348 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
350 CURLcode r = CURLE_OK;
353 /* Copy src->set into dst->set first, then deal with the strings
357 /* clear all string pointers first */
358 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
360 /* duplicate all strings */
361 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
362 r = setstropt(&dst->set.str[i], src->set.str[i]);
367 /* If a failure occurred, freeing has to be performed externally. */
372 * This is the internal function curl_easy_cleanup() calls. This should
373 * cleanup and free all resources associated with this sessionhandle.
375 * NOTE: if we ever add something that attempts to write to a socket or
376 * similar here, we must ignore SIGPIPE first. It is currently only done
377 * when curl_easy_perform() is invoked.
380 CURLcode Curl_close(struct SessionHandle *data)
382 struct Curl_multi *m;
387 Curl_expire(data, 0); /* shut off timers */
392 /* This handle is still part of a multi handle, take care of this first
393 and detach this handle from there. */
394 curl_multi_remove_handle(data->multi, data);
397 /* when curl_easy_perform() is used, it creates its own multi handle to
398 use and this is the one */
399 curl_multi_cleanup(data->multi_easy);
401 /* Destroy the timeout list that is held in the easy handle. It is
402 /normally/ done by curl_multi_remove_handle() but this is "just in
404 if(data->state.timeoutlist) {
405 Curl_llist_destroy(data->state.timeoutlist, NULL);
406 data->state.timeoutlist = NULL;
409 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
410 the multi handle, since that function uses the magic
413 if(data->state.rangestringalloc)
414 free(data->state.range);
416 /* Free the pathbuffer */
417 Curl_safefree(data->state.pathbuffer);
418 data->state.path = NULL;
420 Curl_safefree(data->state.proto.generic);
422 /* Close down all open SSL info and sessions */
423 Curl_ssl_close_all(data);
424 Curl_safefree(data->state.first_host);
425 Curl_safefree(data->state.scratch);
426 Curl_ssl_free_certinfo(data);
428 if(data->change.referer_alloc) {
429 Curl_safefree(data->change.referer);
430 data->change.referer_alloc = FALSE;
432 data->change.referer = NULL;
434 if(data->change.url_alloc) {
435 Curl_safefree(data->change.url);
436 data->change.url_alloc = FALSE;
438 data->change.url = NULL;
440 Curl_safefree(data->state.headerbuff);
442 Curl_flush_cookies(data, 1);
444 Curl_digest_cleanup(data);
446 Curl_safefree(data->info.contenttype);
447 Curl_safefree(data->info.wouldredirect);
449 /* this destroys the channel and we cannot use it anymore after this */
450 Curl_resolver_cleanup(data->state.resolver);
452 Curl_convert_close(data);
454 /* No longer a dirty share, if it exists */
456 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
457 data->share->dirty--;
458 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
467 * Initialize the UserDefined fields within a SessionHandle.
468 * This may be safely called on a new or existing SessionHandle.
470 CURLcode Curl_init_userdefined(struct UserDefined *set)
472 CURLcode res = CURLE_OK;
474 set->out = stdout; /* default output to stdout */
475 set->in = stdin; /* default input from stdin */
476 set->err = stderr; /* default stderr to stderr */
478 /* use fwrite as default function to store output */
479 set->fwrite_func = (curl_write_callback)fwrite;
481 /* use fread as default function to read input */
482 set->fread_func = (curl_read_callback)fread;
483 set->is_fread_set = 0;
484 set->is_fwrite_set = 0;
486 set->seek_func = ZERO_NULL;
487 set->seek_client = ZERO_NULL;
489 /* conversion callbacks for non-ASCII hosts */
490 set->convfromnetwork = ZERO_NULL;
491 set->convtonetwork = ZERO_NULL;
492 set->convfromutf8 = ZERO_NULL;
494 set->infilesize = -1; /* we don't know any size */
495 set->postfieldsize = -1; /* unknown size */
496 set->maxredirs = -1; /* allow any amount by default */
498 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
499 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
500 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
501 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
502 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
503 set->ftp_filemethod = FTPFILE_MULTICWD;
505 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
507 /* Set the default size of the SSL session ID cache */
508 set->ssl.max_ssl_sessions = 5;
510 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
511 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
512 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
513 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
515 /* make libcurl quiet by default: */
516 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
519 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
520 * switched off unless wanted.
522 set->ssl.verifypeer = TRUE;
523 set->ssl.verifyhost = TRUE;
525 set->ssl.authtype = CURL_TLSAUTH_NONE;
527 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
529 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
531 set->new_file_perms = 0644; /* Default permissions */
532 set->new_directory_perms = 0755; /* Default permissions */
534 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
535 define since we internally only use the lower 16 bits for the passed
536 in bitmask to not conflict with the private bits */
537 set->allowed_protocols = CURLPROTO_ALL;
538 set->redir_protocols =
539 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
541 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
543 * disallow unprotected protection negotiation NEC reference implementation
544 * seem not to follow rfc1961 section 4.3/4.4
546 set->socks5_gssapi_nec = FALSE;
547 /* set default gssapi service name */
548 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
549 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
554 /* This is our preferred CA cert bundle/path since install time */
555 #if defined(CURL_CA_BUNDLE)
556 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
557 #elif defined(CURL_CA_PATH)
558 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
561 set->wildcardmatch = FALSE;
562 set->chunk_bgn = ZERO_NULL;
563 set->chunk_end = ZERO_NULL;
565 /* tcp keepalives are disabled by default, but provide reasonable values for
566 * the interval and idle times.
568 set->tcp_keepalive = FALSE;
569 set->tcp_keepintvl = 60;
570 set->tcp_keepidle = 60;
578 * @param curl is a pointer to a sessionhandle pointer that gets set by this
583 CURLcode Curl_open(struct SessionHandle **curl)
585 CURLcode res = CURLE_OK;
586 struct SessionHandle *data;
589 /* Very simple start-up: alloc the struct, init it with zeroes and return */
590 data = calloc(1, sizeof(struct SessionHandle));
592 /* this is a very serious error */
593 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
594 return CURLE_OUT_OF_MEMORY;
597 data->magic = CURLEASY_MAGIC_NUMBER;
599 status = Curl_resolver_init(&data->state.resolver);
601 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
606 /* We do some initial setup here, all those fields that can't be just 0 */
608 data->state.headerbuff = malloc(HEADERSIZE);
609 if(!data->state.headerbuff) {
610 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
611 res = CURLE_OUT_OF_MEMORY;
614 Curl_easy_initHandleData(data);
615 res = Curl_init_userdefined(&data->set);
617 data->state.headersize=HEADERSIZE;
619 Curl_convert_init(data);
621 /* most recent connection is not yet defined */
622 data->state.lastconnect = NULL;
624 data->progress.flags |= PGRS_HIDE;
625 data->state.current_speed = -1; /* init to negative == impossible */
627 data->wildcard.state = CURLWC_INIT;
628 data->wildcard.filelist = NULL;
629 data->set.fnmatch = ZERO_NULL;
630 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
634 Curl_resolver_cleanup(data->state.resolver);
635 if(data->state.headerbuff)
636 free(data->state.headerbuff);
647 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
651 CURLcode result = CURLE_OK;
653 #ifndef CURL_DISABLE_HTTP
658 case CURLOPT_DNS_CACHE_TIMEOUT:
659 data->set.dns_cache_timeout = va_arg(param, long);
661 case CURLOPT_DNS_USE_GLOBAL_CACHE:
662 /* remember we want this enabled */
663 arg = va_arg(param, long);
664 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
666 case CURLOPT_SSL_CIPHER_LIST:
667 /* set a list of cipher we want to use in the SSL connection */
668 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
669 va_arg(param, char *));
672 case CURLOPT_RANDOM_FILE:
674 * This is the path name to a file that contains random data to seed
675 * the random SSL stuff with. The file is only used for reading.
677 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
678 va_arg(param, char *));
680 case CURLOPT_EGDSOCKET:
682 * The Entropy Gathering Daemon socket pathname
684 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
685 va_arg(param, char *));
687 case CURLOPT_MAXCONNECTS:
689 * Set the absolute number of maximum simultaneous alive connection that
690 * libcurl is allowed to have.
692 data->set.maxconnects = va_arg(param, long);
694 case CURLOPT_FORBID_REUSE:
696 * When this transfer is done, it must not be left to be reused by a
697 * subsequent transfer but shall be closed immediately.
699 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
701 case CURLOPT_FRESH_CONNECT:
703 * This transfer shall not use a previously cached connection but
704 * should be made with a fresh new connect!
706 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
708 case CURLOPT_VERBOSE:
710 * Verbose means infof() calls that give a lot of information about
711 * the connection and transfer procedures as well as internal choices.
713 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
717 * Set to include the header in the general data output stream.
719 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
721 case CURLOPT_NOPROGRESS:
723 * Shut off the internal supported progress meter
725 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
726 if(data->set.hide_progress)
727 data->progress.flags |= PGRS_HIDE;
729 data->progress.flags &= ~PGRS_HIDE;
733 * Do not include the body part in the output data stream.
735 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
737 case CURLOPT_FAILONERROR:
739 * Don't output the >=300 error code HTML-page, but instead only
742 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
747 * We want to sent data to the remote host. If this is HTTP, that equals
748 * using the PUT request.
750 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
751 if(data->set.upload) {
752 /* If this is HTTP, PUT is what's needed to "upload" */
753 data->set.httpreq = HTTPREQ_PUT;
754 data->set.opt_no_body = FALSE; /* this is implied */
757 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
758 then this can be changed to HEAD later on) */
759 data->set.httpreq = HTTPREQ_GET;
761 case CURLOPT_FILETIME:
763 * Try to get the file time of the remote document. The time will
764 * later (possibly) become available using curl_easy_getinfo().
766 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
768 case CURLOPT_FTP_CREATE_MISSING_DIRS:
770 * An FTP option that modifies an upload to create missing directories on
773 switch(va_arg(param, long)) {
775 data->set.ftp_create_missing_dirs = 0;
778 data->set.ftp_create_missing_dirs = 1;
781 data->set.ftp_create_missing_dirs = 2;
784 /* reserve other values for future use */
785 result = CURLE_UNKNOWN_OPTION;
789 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
791 * Option that specifies how quickly an server response must be obtained
792 * before it is considered failure. For pingpong protocols.
794 data->set.server_response_timeout = va_arg( param , long ) * 1000;
796 case CURLOPT_TFTP_BLKSIZE:
798 * TFTP option that specifies the block size to use for data transmission
800 data->set.tftp_blksize = va_arg(param, long);
802 case CURLOPT_DIRLISTONLY:
804 * An option that changes the command to one that asks for a list
805 * only, no file info details.
807 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
811 * We want to upload and append to an existing file.
813 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
815 case CURLOPT_FTP_FILEMETHOD:
817 * How do access files over FTP.
819 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
823 * Parse the $HOME/.netrc file
825 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
827 case CURLOPT_NETRC_FILE:
829 * Use this file instead of the $HOME/.netrc file
831 result = setstropt(&data->set.str[STRING_NETRC_FILE],
832 va_arg(param, char *));
834 case CURLOPT_TRANSFERTEXT:
836 * This option was previously named 'FTPASCII'. Renamed to work with
837 * more protocols than merely FTP.
839 * Transfer using ASCII (instead of BINARY).
841 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
843 case CURLOPT_TIMECONDITION:
845 * Set HTTP time condition. This must be one of the defines in the
846 * curl/curl.h header file.
848 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
850 case CURLOPT_TIMEVALUE:
852 * This is the value to compare with the remote document with the
853 * method set with CURLOPT_TIMECONDITION
855 data->set.timevalue = (time_t)va_arg(param, long);
857 case CURLOPT_SSLVERSION:
859 * Set explicit SSL version to try to connect with, as some SSL
860 * implementations are lame.
862 data->set.ssl.version = va_arg(param, long);
865 #ifndef CURL_DISABLE_HTTP
866 case CURLOPT_AUTOREFERER:
868 * Switch on automatic referer that gets set if curl follows locations.
870 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
873 case CURLOPT_ACCEPT_ENCODING:
875 * String to use at the value of Accept-Encoding header.
877 * If the encoding is set to "" we use an Accept-Encoding header that
878 * encompasses all the encodings we support.
879 * If the encoding is set to NULL we don't send an Accept-Encoding header
880 * and ignore an received Content-Encoding header.
883 argptr = va_arg(param, char *);
884 result = setstropt(&data->set.str[STRING_ENCODING],
885 (argptr && !*argptr)?
886 (char *) ALL_CONTENT_ENCODINGS: argptr);
889 case CURLOPT_TRANSFER_ENCODING:
890 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
893 case CURLOPT_FOLLOWLOCATION:
895 * Follow Location: header hints on a HTTP-server.
897 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
900 case CURLOPT_UNRESTRICTED_AUTH:
902 * Send authentication (user+password) when following locations, even when
905 data->set.http_disable_hostname_check_before_authentication =
906 (0 != va_arg(param, long))?TRUE:FALSE;
909 case CURLOPT_MAXREDIRS:
911 * The maximum amount of hops you allow curl to follow Location:
912 * headers. This should mostly be used to detect never-ending loops.
914 data->set.maxredirs = va_arg(param, long);
917 case CURLOPT_POSTREDIR:
920 * Set the behaviour of POST when redirecting
921 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
922 * CURL_REDIR_POST_301 - POST is kept as POST after 301
923 * CURL_REDIR_POST_302 - POST is kept as POST after 302
924 * CURL_REDIR_POST_303 - POST is kept as POST after 303
925 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
926 * other - POST is kept as POST after 301 and 302
928 int postRedir = curlx_sltosi(va_arg(param, long));
929 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
934 /* Does this option serve a purpose anymore? Yes it does, when
935 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
937 if(va_arg(param, long)) {
938 data->set.httpreq = HTTPREQ_POST;
939 data->set.opt_no_body = FALSE; /* this is implied */
942 data->set.httpreq = HTTPREQ_GET;
945 case CURLOPT_COPYPOSTFIELDS:
947 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
948 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
949 * CURLOPT_COPYPOSTFIELDS and not altered later.
951 argptr = va_arg(param, char *);
953 if(!argptr || data->set.postfieldsize == -1)
954 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
957 * Check that requested length does not overflow the size_t type.
960 if((data->set.postfieldsize < 0) ||
961 ((sizeof(curl_off_t) != sizeof(size_t)) &&
962 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
963 result = CURLE_OUT_OF_MEMORY;
967 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
969 /* Allocate even when size == 0. This satisfies the need of possible
970 later address compare to detect the COPYPOSTFIELDS mode, and
971 to mark that postfields is used rather than read function or
974 p = malloc((size_t)(data->set.postfieldsize?
975 data->set.postfieldsize:1));
978 result = CURLE_OUT_OF_MEMORY;
980 if(data->set.postfieldsize)
981 memcpy(p, argptr, (size_t)data->set.postfieldsize);
983 data->set.str[STRING_COPYPOSTFIELDS] = p;
988 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
989 data->set.httpreq = HTTPREQ_POST;
992 case CURLOPT_POSTFIELDS:
994 * Like above, but use static data instead of copying it.
996 data->set.postfields = va_arg(param, void *);
997 /* Release old copied data. */
998 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
999 data->set.httpreq = HTTPREQ_POST;
1002 case CURLOPT_POSTFIELDSIZE:
1004 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1005 * figure it out. Enables binary posts.
1007 bigsize = va_arg(param, long);
1009 if(data->set.postfieldsize < bigsize &&
1010 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1011 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1012 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1013 data->set.postfields = NULL;
1016 data->set.postfieldsize = bigsize;
1019 case CURLOPT_POSTFIELDSIZE_LARGE:
1021 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1022 * figure it out. Enables binary posts.
1024 bigsize = va_arg(param, curl_off_t);
1026 if(data->set.postfieldsize < bigsize &&
1027 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1028 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1029 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1030 data->set.postfields = NULL;
1033 data->set.postfieldsize = bigsize;
1036 case CURLOPT_HTTPPOST:
1038 * Set to make us do HTTP POST
1040 data->set.httppost = va_arg(param, struct curl_httppost *);
1041 data->set.httpreq = HTTPREQ_POST_FORM;
1042 data->set.opt_no_body = FALSE; /* this is implied */
1045 case CURLOPT_REFERER:
1047 * String to set in the HTTP Referer: field.
1049 if(data->change.referer_alloc) {
1050 Curl_safefree(data->change.referer);
1051 data->change.referer_alloc = FALSE;
1053 result = setstropt(&data->set.str[STRING_SET_REFERER],
1054 va_arg(param, char *));
1055 data->change.referer = data->set.str[STRING_SET_REFERER];
1058 case CURLOPT_USERAGENT:
1060 * String to use in the HTTP User-Agent field
1062 result = setstropt(&data->set.str[STRING_USERAGENT],
1063 va_arg(param, char *));
1066 case CURLOPT_HTTPHEADER:
1068 * Set a list with HTTP headers to use (or replace internals with)
1070 data->set.headers = va_arg(param, struct curl_slist *);
1073 case CURLOPT_HTTP200ALIASES:
1075 * Set a list of aliases for HTTP 200 in response header
1077 data->set.http200aliases = va_arg(param, struct curl_slist *);
1080 #if !defined(CURL_DISABLE_COOKIES)
1081 case CURLOPT_COOKIE:
1083 * Cookie string to send to the remote server in the request.
1085 result = setstropt(&data->set.str[STRING_COOKIE],
1086 va_arg(param, char *));
1089 case CURLOPT_COOKIEFILE:
1091 * Set cookie file to read and parse. Can be used multiple times.
1093 argptr = (char *)va_arg(param, void *);
1095 struct curl_slist *cl;
1096 /* append the cookie file name to the list of file names, and deal with
1098 cl = curl_slist_append(data->change.cookielist, argptr);
1100 curl_slist_free_all(data->change.cookielist);
1101 data->change.cookielist = NULL;
1102 return CURLE_OUT_OF_MEMORY;
1104 data->change.cookielist = cl; /* store the list for later use */
1108 case CURLOPT_COOKIEJAR:
1110 * Set cookie file name to dump all cookies to when we're done.
1112 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1113 va_arg(param, char *));
1116 * Activate the cookie parser. This may or may not already
1119 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1120 data->set.cookiesession);
1123 case CURLOPT_COOKIESESSION:
1125 * Set this option to TRUE to start a new "cookie session". It will
1126 * prevent the forthcoming read-cookies-from-file actions to accept
1127 * cookies that are marked as being session cookies, as they belong to a
1130 * In the original Netscape cookie spec, "session cookies" are cookies
1131 * with no expire date set. RFC2109 describes the same action if no
1132 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1133 * a 'Discard' action that can enforce the discard even for cookies that
1136 * We run mostly with the original cookie spec, as hardly anyone implements
1139 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1142 case CURLOPT_COOKIELIST:
1143 argptr = va_arg(param, char *);
1148 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1150 if(Curl_raw_equal(argptr, "ALL")) {
1151 /* clear all cookies */
1152 Curl_cookie_clearall(data->cookies);
1154 else if(Curl_raw_equal(argptr, "SESS")) {
1155 /* clear session cookies */
1156 Curl_cookie_clearsess(data->cookies);
1158 else if(Curl_raw_equal(argptr, "FLUSH")) {
1159 /* flush cookies to file */
1160 Curl_flush_cookies(data, 0);
1164 /* if cookie engine was not running, activate it */
1165 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1167 argptr = strdup(argptr);
1169 result = CURLE_OUT_OF_MEMORY;
1173 if(checkprefix("Set-Cookie:", argptr))
1174 /* HTTP Header format line */
1175 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1178 /* Netscape format line */
1179 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1184 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1187 #endif /* CURL_DISABLE_COOKIES */
1189 case CURLOPT_HTTPGET:
1191 * Set to force us do HTTP GET
1193 if(va_arg(param, long)) {
1194 data->set.httpreq = HTTPREQ_GET;
1195 data->set.upload = FALSE; /* switch off upload */
1196 data->set.opt_no_body = FALSE; /* this is implied */
1200 case CURLOPT_HTTP_VERSION:
1202 * This sets a requested HTTP version to be used. The value is one of
1203 * the listed enums in curl/curl.h.
1205 data->set.httpversion = va_arg(param, long);
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;options 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],
1555 &data->set.str[STRING_OPTIONS]);
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 *));
1564 case CURLOPT_PASSWORD:
1566 * authentication password to use in the operation
1568 result = setstropt(&data->set.str[STRING_PASSWORD],
1569 va_arg(param, char *));
1571 case CURLOPT_POSTQUOTE:
1573 * List of RAW FTP commands to use after a transfer
1575 data->set.postquote = va_arg(param, struct curl_slist *);
1577 case CURLOPT_PREQUOTE:
1579 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1581 data->set.prequote = va_arg(param, struct curl_slist *);
1585 * List of RAW FTP commands to use before a transfer
1587 data->set.quote = va_arg(param, struct curl_slist *);
1589 case CURLOPT_RESOLVE:
1591 * List of NAME:[address] names to populate the DNS cache with
1592 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1594 * Names added with this API will remain in the cache until explicitly
1595 * removed or the handle is cleaned up.
1597 * This API can remove any name from the DNS cache, but only entries
1598 * that aren't actually in use right now will be pruned immediately.
1600 data->set.resolve = va_arg(param, struct curl_slist *);
1601 data->change.resolve = data->set.resolve;
1603 case CURLOPT_PROGRESSFUNCTION:
1605 * Progress callback function
1607 data->set.fprogress = va_arg(param, curl_progress_callback);
1608 if(data->set.fprogress)
1609 data->progress.callback = TRUE; /* no longer internal */
1611 data->progress.callback = FALSE; /* NULL enforces internal */
1614 case CURLOPT_XFERINFOFUNCTION:
1616 * Transfer info callback function
1618 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1619 if(data->set.fxferinfo)
1620 data->progress.callback = TRUE; /* no longer internal */
1622 data->progress.callback = FALSE; /* NULL enforces internal */
1626 case CURLOPT_PROGRESSDATA:
1628 * Custom client data to pass to the progress callback
1630 data->set.progress_client = va_arg(param, void *);
1633 #ifndef CURL_DISABLE_PROXY
1634 case CURLOPT_PROXYUSERPWD:
1636 * user:password needed to use the proxy
1638 result = setstropt_userpwd(va_arg(param, char *),
1639 &data->set.str[STRING_PROXYUSERNAME],
1640 &data->set.str[STRING_PROXYPASSWORD], NULL);
1642 case CURLOPT_PROXYUSERNAME:
1644 * authentication user name to use in the operation
1646 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1647 va_arg(param, char *));
1649 case CURLOPT_PROXYPASSWORD:
1651 * authentication password to use in the operation
1653 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1654 va_arg(param, char *));
1656 case CURLOPT_NOPROXY:
1658 * proxy exception list
1660 result = setstropt(&data->set.str[STRING_NOPROXY],
1661 va_arg(param, char *));
1667 * What range of the file you want to transfer
1669 result = setstropt(&data->set.str[STRING_SET_RANGE],
1670 va_arg(param, char *));
1672 case CURLOPT_RESUME_FROM:
1674 * Resume transfer at the give file position
1676 data->set.set_resume_from = va_arg(param, long);
1678 case CURLOPT_RESUME_FROM_LARGE:
1680 * Resume transfer at the give file position
1682 data->set.set_resume_from = va_arg(param, curl_off_t);
1684 case CURLOPT_DEBUGFUNCTION:
1686 * stderr write callback.
1688 data->set.fdebug = va_arg(param, curl_debug_callback);
1690 * if the callback provided is NULL, it'll use the default callback
1693 case CURLOPT_DEBUGDATA:
1695 * Set to a void * that should receive all error writes. This
1696 * defaults to CURLOPT_STDERR for normal operations.
1698 data->set.debugdata = va_arg(param, void *);
1700 case CURLOPT_STDERR:
1702 * Set to a FILE * that should receive all error writes. This
1703 * defaults to stderr for normal operations.
1705 data->set.err = va_arg(param, FILE *);
1707 data->set.err = stderr;
1709 case CURLOPT_HEADERFUNCTION:
1711 * Set header write callback
1713 data->set.fwrite_header = va_arg(param, curl_write_callback);
1715 case CURLOPT_WRITEFUNCTION:
1717 * Set data write callback
1719 data->set.fwrite_func = va_arg(param, curl_write_callback);
1720 if(!data->set.fwrite_func) {
1721 data->set.is_fwrite_set = 0;
1722 /* When set to NULL, reset to our internal default function */
1723 data->set.fwrite_func = (curl_write_callback)fwrite;
1726 data->set.is_fwrite_set = 1;
1728 case CURLOPT_READFUNCTION:
1730 * Read data callback
1732 data->set.fread_func = va_arg(param, curl_read_callback);
1733 if(!data->set.fread_func) {
1734 data->set.is_fread_set = 0;
1735 /* When set to NULL, reset to our internal default function */
1736 data->set.fread_func = (curl_read_callback)fread;
1739 data->set.is_fread_set = 1;
1741 case CURLOPT_SEEKFUNCTION:
1743 * Seek callback. Might be NULL.
1745 data->set.seek_func = va_arg(param, curl_seek_callback);
1747 case CURLOPT_SEEKDATA:
1749 * Seek control callback. Might be NULL.
1751 data->set.seek_client = va_arg(param, void *);
1753 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1755 * "Convert from network encoding" callback
1757 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1759 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1761 * "Convert to network encoding" callback
1763 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1765 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1767 * "Convert from UTF-8 encoding" callback
1769 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1771 case CURLOPT_IOCTLFUNCTION:
1773 * I/O control callback. Might be NULL.
1775 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1777 case CURLOPT_IOCTLDATA:
1779 * I/O control data pointer. Might be NULL.
1781 data->set.ioctl_client = va_arg(param, void *);
1783 case CURLOPT_SSLCERT:
1785 * String that holds file name of the SSL certificate to use
1787 result = setstropt(&data->set.str[STRING_CERT],
1788 va_arg(param, char *));
1790 case CURLOPT_SSLCERTTYPE:
1792 * String that holds file type of the SSL certificate to use
1794 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1795 va_arg(param, char *));
1797 case CURLOPT_SSLKEY:
1799 * String that holds file name of the SSL key to use
1801 result = setstropt(&data->set.str[STRING_KEY],
1802 va_arg(param, char *));
1804 case CURLOPT_SSLKEYTYPE:
1806 * String that holds file type of the SSL key to use
1808 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1809 va_arg(param, char *));
1811 case CURLOPT_KEYPASSWD:
1813 * String that holds the SSL or SSH private key password.
1815 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1816 va_arg(param, char *));
1818 case CURLOPT_SSLENGINE:
1820 * String that holds the SSL crypto engine.
1822 argptr = va_arg(param, char *);
1823 if(argptr && argptr[0])
1824 result = Curl_ssl_set_engine(data, argptr);
1827 case CURLOPT_SSLENGINE_DEFAULT:
1829 * flag to set engine as default.
1831 result = Curl_ssl_set_engine_default(data);
1835 * Kludgy option to enable CRLF conversions. Subject for removal.
1837 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1840 case CURLOPT_INTERFACE:
1842 * Set what interface or address/hostname to bind the socket to when
1843 * performing an operation and thus what from-IP your connection will use.
1845 result = setstropt(&data->set.str[STRING_DEVICE],
1846 va_arg(param, char *));
1848 case CURLOPT_LOCALPORT:
1850 * Set what local port to bind the socket to when performing an operation.
1852 data->set.localport = curlx_sltous(va_arg(param, long));
1854 case CURLOPT_LOCALPORTRANGE:
1856 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1858 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1860 case CURLOPT_KRBLEVEL:
1862 * A string that defines the kerberos security level.
1864 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1865 va_arg(param, char *));
1866 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1868 case CURLOPT_GSSAPI_DELEGATION:
1870 * GSSAPI credential delegation
1872 data->set.gssapi_delegation = va_arg(param, long);
1874 case CURLOPT_SSL_VERIFYPEER:
1876 * Enable peer SSL verifying.
1878 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1880 case CURLOPT_SSL_VERIFYHOST:
1882 * Enable verification of the host name in the peer certificate
1884 arg = va_arg(param, long);
1886 /* Obviously people are not reading documentation and too many thought
1887 this argument took a boolean when it wasn't and misused it. We thus ban
1888 1 as a sensible input and we warn about its use. Then we only have the
1889 2 action internally stored as TRUE. */
1892 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1893 return CURLE_BAD_FUNCTION_ARGUMENT;
1896 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1899 /* since these two options are only possible to use on an OpenSSL-
1900 powered libcurl we #ifdef them on this condition so that libcurls
1901 built against other SSL libs will return a proper error when trying
1902 to set this option! */
1903 case CURLOPT_SSL_CTX_FUNCTION:
1905 * Set a SSL_CTX callback
1907 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1909 case CURLOPT_SSL_CTX_DATA:
1911 * Set a SSL_CTX callback parameter pointer
1913 data->set.ssl.fsslctxp = va_arg(param, void *);
1916 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT)
1917 case CURLOPT_CERTINFO:
1918 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1921 case CURLOPT_CAINFO:
1923 * Set CA info for SSL connection. Specify file name of the CA certificate
1925 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1926 va_arg(param, char *));
1928 case CURLOPT_CAPATH:
1930 * Set CA path info for SSL connection. Specify directory name of the CA
1931 * certificates which have been prepared using openssl c_rehash utility.
1933 /* This does not work on windows. */
1934 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1935 va_arg(param, char *));
1937 case CURLOPT_CRLFILE:
1939 * Set CRL file info for SSL connection. Specify file name of the CRL
1940 * to check certificates revocation
1942 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1943 va_arg(param, char *));
1945 case CURLOPT_ISSUERCERT:
1947 * Set Issuer certificate file
1948 * to check certificates issuer
1950 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1951 va_arg(param, char *));
1953 case CURLOPT_TELNETOPTIONS:
1955 * Set a linked list of telnet options
1957 data->set.telnet_options = va_arg(param, struct curl_slist *);
1960 case CURLOPT_BUFFERSIZE:
1962 * The application kindly asks for a differently sized receive buffer.
1963 * If it seems reasonable, we'll use it.
1965 data->set.buffer_size = va_arg(param, long);
1967 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1968 (data->set.buffer_size < 1))
1969 data->set.buffer_size = 0; /* huge internal default */
1973 case CURLOPT_NOSIGNAL:
1975 * The application asks not to set any signal() or alarm() handlers,
1976 * even when using a timeout.
1978 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
1983 struct Curl_share *set;
1984 set = va_arg(param, struct Curl_share *);
1986 /* disconnect from old share, if any */
1988 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
1990 if(data->dns.hostcachetype == HCACHE_SHARED) {
1991 data->dns.hostcache = NULL;
1992 data->dns.hostcachetype = HCACHE_NONE;
1995 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
1996 if(data->share->cookies == data->cookies)
1997 data->cookies = NULL;
2000 if(data->share->sslsession == data->state.session)
2001 data->state.session = NULL;
2003 data->share->dirty--;
2005 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2009 /* use new share if it set */
2013 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2015 data->share->dirty++;
2017 if(data->share->hostcache) {
2018 /* use shared host cache */
2019 data->dns.hostcache = data->share->hostcache;
2020 data->dns.hostcachetype = HCACHE_SHARED;
2022 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2023 if(data->share->cookies) {
2024 /* use shared cookie list, first free own one if any */
2026 Curl_cookie_cleanup(data->cookies);
2027 /* enable cookies since we now use a share that uses cookies! */
2028 data->cookies = data->share->cookies;
2030 #endif /* CURL_DISABLE_HTTP */
2031 if(data->share->sslsession) {
2032 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2033 data->state.session = data->share->sslsession;
2035 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2038 /* check for host cache not needed,
2039 * it will be done by curl_easy_perform */
2043 case CURLOPT_PRIVATE:
2045 * Set private data pointer.
2047 data->set.private_data = va_arg(param, void *);
2050 case CURLOPT_MAXFILESIZE:
2052 * Set the maximum size of a file to download.
2054 data->set.max_filesize = va_arg(param, long);
2058 case CURLOPT_USE_SSL:
2060 * Make transfers attempt to use SSL/TLS.
2062 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2065 case CURLOPT_SSL_OPTIONS:
2066 arg = va_arg(param, long);
2067 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2071 case CURLOPT_FTPSSLAUTH:
2073 * Set a specific auth for FTP-SSL transfers.
2075 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2078 case CURLOPT_IPRESOLVE:
2079 data->set.ipver = va_arg(param, long);
2082 case CURLOPT_MAXFILESIZE_LARGE:
2084 * Set the maximum size of a file to download.
2086 data->set.max_filesize = va_arg(param, curl_off_t);
2089 case CURLOPT_TCP_NODELAY:
2091 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2094 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2097 case CURLOPT_FTP_ACCOUNT:
2098 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2099 va_arg(param, char *));
2102 case CURLOPT_IGNORE_CONTENT_LENGTH:
2103 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2106 case CURLOPT_CONNECT_ONLY:
2108 * No data transfer, set up connection and let application use the socket
2110 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2113 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2114 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2115 va_arg(param, char *));
2118 case CURLOPT_SOCKOPTFUNCTION:
2120 * socket callback function: called after socket() but before connect()
2122 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2125 case CURLOPT_SOCKOPTDATA:
2127 * socket callback data pointer. Might be NULL.
2129 data->set.sockopt_client = va_arg(param, void *);
2132 case CURLOPT_OPENSOCKETFUNCTION:
2134 * open/create socket callback function: called instead of socket(),
2137 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2140 case CURLOPT_OPENSOCKETDATA:
2142 * socket callback data pointer. Might be NULL.
2144 data->set.opensocket_client = va_arg(param, void *);
2147 case CURLOPT_CLOSESOCKETFUNCTION:
2149 * close socket callback function: called instead of close()
2150 * when shutting down a connection
2152 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2155 case CURLOPT_CLOSESOCKETDATA:
2157 * socket callback data pointer. Might be NULL.
2159 data->set.closesocket_client = va_arg(param, void *);
2162 case CURLOPT_SSL_SESSIONID_CACHE:
2163 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2167 /* we only include SSH options if explicitly built to support SSH */
2168 case CURLOPT_SSH_AUTH_TYPES:
2169 data->set.ssh_auth_types = va_arg(param, long);
2172 case CURLOPT_SSH_PUBLIC_KEYFILE:
2174 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2176 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2177 va_arg(param, char *));
2180 case CURLOPT_SSH_PRIVATE_KEYFILE:
2182 * Use this file instead of the $HOME/.ssh/id_dsa file
2184 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2185 va_arg(param, char *));
2187 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2189 * Option to allow for the MD5 of the host public key to be checked
2190 * for validation purposes.
2192 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2193 va_arg(param, char *));
2195 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2196 case CURLOPT_SSH_KNOWNHOSTS:
2198 * Store the file name to read known hosts from.
2200 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2201 va_arg(param, char *));
2204 case CURLOPT_SSH_KEYFUNCTION:
2205 /* setting to NULL is fine since the ssh.c functions themselves will
2206 then rever to use the internal default */
2207 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2210 case CURLOPT_SSH_KEYDATA:
2212 * Custom client data to pass to the SSH keyfunc callback
2214 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2216 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2218 #endif /* USE_LIBSSH2 */
2220 case CURLOPT_HTTP_TRANSFER_DECODING:
2222 * disable libcurl transfer encoding is used
2224 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2227 case CURLOPT_HTTP_CONTENT_DECODING:
2229 * raw data passed to the application when content encoding is used
2231 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2234 case CURLOPT_NEW_FILE_PERMS:
2236 * Uses these permissions instead of 0644
2238 data->set.new_file_perms = va_arg(param, long);
2241 case CURLOPT_NEW_DIRECTORY_PERMS:
2243 * Uses these permissions instead of 0755
2245 data->set.new_directory_perms = va_arg(param, long);
2248 case CURLOPT_ADDRESS_SCOPE:
2250 * We always get longs when passed plain numericals, but for this value we
2251 * know that an unsigned int will always hold the value so we blindly
2252 * typecast to this type
2254 data->set.scope = curlx_sltoui(va_arg(param, long));
2257 case CURLOPT_PROTOCOLS:
2258 /* set the bitmask for the protocols that are allowed to be used for the
2259 transfer, which thus helps the app which takes URLs from users or other
2260 external inputs and want to restrict what protocol(s) to deal
2261 with. Defaults to CURLPROTO_ALL. */
2262 data->set.allowed_protocols = va_arg(param, long);
2265 case CURLOPT_REDIR_PROTOCOLS:
2266 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2267 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2268 to be set in both bitmasks to be allowed to get redirected to. Defaults
2269 to all protocols except FILE and SCP. */
2270 data->set.redir_protocols = va_arg(param, long);
2273 case CURLOPT_MAIL_FROM:
2274 /* Set the SMTP mail originator */
2275 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2276 va_arg(param, char *));
2279 case CURLOPT_MAIL_AUTH:
2280 /* Set the SMTP auth originator */
2281 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2282 va_arg(param, char *));
2285 case CURLOPT_MAIL_RCPT:
2286 /* Set the list of mail recipients */
2287 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2290 case CURLOPT_SASL_IR:
2291 /* Enable/disable SASL initial response */
2292 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2295 case CURLOPT_RTSP_REQUEST:
2298 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2299 * Would this be better if the RTSPREQ_* were just moved into here?
2301 long curl_rtspreq = va_arg(param, long);
2302 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2303 switch(curl_rtspreq) {
2304 case CURL_RTSPREQ_OPTIONS:
2305 rtspreq = RTSPREQ_OPTIONS;
2308 case CURL_RTSPREQ_DESCRIBE:
2309 rtspreq = RTSPREQ_DESCRIBE;
2312 case CURL_RTSPREQ_ANNOUNCE:
2313 rtspreq = RTSPREQ_ANNOUNCE;
2316 case CURL_RTSPREQ_SETUP:
2317 rtspreq = RTSPREQ_SETUP;
2320 case CURL_RTSPREQ_PLAY:
2321 rtspreq = RTSPREQ_PLAY;
2324 case CURL_RTSPREQ_PAUSE:
2325 rtspreq = RTSPREQ_PAUSE;
2328 case CURL_RTSPREQ_TEARDOWN:
2329 rtspreq = RTSPREQ_TEARDOWN;
2332 case CURL_RTSPREQ_GET_PARAMETER:
2333 rtspreq = RTSPREQ_GET_PARAMETER;
2336 case CURL_RTSPREQ_SET_PARAMETER:
2337 rtspreq = RTSPREQ_SET_PARAMETER;
2340 case CURL_RTSPREQ_RECORD:
2341 rtspreq = RTSPREQ_RECORD;
2344 case CURL_RTSPREQ_RECEIVE:
2345 rtspreq = RTSPREQ_RECEIVE;
2348 rtspreq = RTSPREQ_NONE;
2351 data->set.rtspreq = rtspreq;
2356 case CURLOPT_RTSP_SESSION_ID:
2358 * Set the RTSP Session ID manually. Useful if the application is
2359 * resuming a previously established RTSP session
2361 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2362 va_arg(param, char *));
2365 case CURLOPT_RTSP_STREAM_URI:
2367 * Set the Stream URI for the RTSP request. Unless the request is
2368 * for generic server options, the application will need to set this.
2370 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2371 va_arg(param, char *));
2374 case CURLOPT_RTSP_TRANSPORT:
2376 * The content of the Transport: header for the RTSP request
2378 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2379 va_arg(param, char *));
2382 case CURLOPT_RTSP_CLIENT_CSEQ:
2384 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2385 * application is resuming a previously broken connection. The CSEQ
2386 * will increment from this new number henceforth.
2388 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2391 case CURLOPT_RTSP_SERVER_CSEQ:
2392 /* Same as the above, but for server-initiated requests */
2393 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2396 case CURLOPT_INTERLEAVEDATA:
2397 data->set.rtp_out = va_arg(param, void *);
2399 case CURLOPT_INTERLEAVEFUNCTION:
2400 /* Set the user defined RTP write function */
2401 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2404 case CURLOPT_WILDCARDMATCH:
2405 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2407 case CURLOPT_CHUNK_BGN_FUNCTION:
2408 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2410 case CURLOPT_CHUNK_END_FUNCTION:
2411 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2413 case CURLOPT_FNMATCH_FUNCTION:
2414 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2416 case CURLOPT_CHUNK_DATA:
2417 data->wildcard.customptr = va_arg(param, void *);
2419 case CURLOPT_FNMATCH_DATA:
2420 data->set.fnmatch_data = va_arg(param, void *);
2423 case CURLOPT_TLSAUTH_USERNAME:
2424 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2425 va_arg(param, char *));
2426 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2427 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2429 case CURLOPT_TLSAUTH_PASSWORD:
2430 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2431 va_arg(param, char *));
2432 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2433 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2435 case CURLOPT_TLSAUTH_TYPE:
2436 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2437 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2439 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2442 case CURLOPT_DNS_SERVERS:
2443 result = Curl_set_dns_servers(data, va_arg(param, char *));
2446 case CURLOPT_TCP_KEEPALIVE:
2447 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2449 case CURLOPT_TCP_KEEPIDLE:
2450 data->set.tcp_keepidle = va_arg(param, long);
2452 case CURLOPT_TCP_KEEPINTVL:
2453 data->set.tcp_keepintvl = va_arg(param, long);
2457 /* unknown tag and its companion, just ignore: */
2458 result = CURLE_UNKNOWN_OPTION;
2465 static void conn_free(struct connectdata *conn)
2470 /* possible left-overs from the async name resolvers */
2471 Curl_resolver_cancel(conn);
2473 /* close the SSL stuff before we close any sockets since they will/may
2474 write to the sockets */
2475 Curl_ssl_close(conn, FIRSTSOCKET);
2476 Curl_ssl_close(conn, SECONDARYSOCKET);
2478 /* close possibly still open sockets */
2479 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2480 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2481 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2482 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2484 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2485 Curl_ntlm_wb_cleanup(conn);
2488 Curl_safefree(conn->user);
2489 Curl_safefree(conn->passwd);
2490 Curl_safefree(conn->options);
2491 Curl_safefree(conn->proxyuser);
2492 Curl_safefree(conn->proxypasswd);
2493 Curl_safefree(conn->allocptr.proxyuserpwd);
2494 Curl_safefree(conn->allocptr.uagent);
2495 Curl_safefree(conn->allocptr.userpwd);
2496 Curl_safefree(conn->allocptr.accept_encoding);
2497 Curl_safefree(conn->allocptr.te);
2498 Curl_safefree(conn->allocptr.rangeline);
2499 Curl_safefree(conn->allocptr.ref);
2500 Curl_safefree(conn->allocptr.host);
2501 Curl_safefree(conn->allocptr.cookiehost);
2502 Curl_safefree(conn->allocptr.rtsp_transport);
2503 Curl_safefree(conn->trailer);
2504 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2505 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2506 Curl_safefree(conn->master_buffer);
2508 Curl_llist_destroy(conn->send_pipe, NULL);
2509 Curl_llist_destroy(conn->recv_pipe, NULL);
2511 conn->send_pipe = NULL;
2512 conn->recv_pipe = NULL;
2514 Curl_safefree(conn->localdev);
2515 Curl_free_ssl_config(&conn->ssl_config);
2517 free(conn); /* free all the connection oriented data */
2520 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2522 struct SessionHandle *data;
2524 return CURLE_OK; /* this is closed and fine already */
2528 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2532 if(conn->dns_entry != NULL) {
2533 Curl_resolv_unlock(data, conn->dns_entry);
2534 conn->dns_entry = NULL;
2537 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2540 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2541 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2543 /* Authentication data is a mix of connection-related and sessionhandle-
2544 related stuff. NTLM is connection-related so when we close the shop
2548 data->state.authhost.done = FALSE;
2549 data->state.authhost.picked =
2550 data->state.authhost.want;
2553 if(has_proxy_ntlm) {
2554 data->state.authproxy.done = FALSE;
2555 data->state.authproxy.picked =
2556 data->state.authproxy.want;
2559 if(has_host_ntlm || has_proxy_ntlm)
2560 data->state.authproblem = FALSE;
2563 /* Cleanup NTLM connection-related data */
2564 Curl_http_ntlm_cleanup(conn);
2566 /* Cleanup possible redirect junk */
2567 if(data->req.newurl) {
2568 free(data->req.newurl);
2569 data->req.newurl = NULL;
2572 if(conn->handler->disconnect)
2573 /* This is set if protocol-specific cleanups should be made */
2574 conn->handler->disconnect(conn, dead_connection);
2576 /* unlink ourselves! */
2577 infof(data, "Closing connection %d\n", conn->connection_id);
2578 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2580 #if defined(USE_LIBIDN)
2581 if(conn->host.encalloc)
2582 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2583 with idn_free() since this was allocated
2585 if(conn->proxy.encalloc)
2586 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2587 freed with idn_free() since this was
2588 allocated by libidn */
2589 #elif defined(USE_WIN32_IDN)
2590 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2591 idn_free() since this was allocated by
2592 curl_win32_idn_to_ascii */
2593 if(conn->proxy.encalloc)
2594 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2595 with idn_free() since this was allocated by
2596 curl_win32_idn_to_ascii */
2599 Curl_ssl_close(conn, FIRSTSOCKET);
2601 /* Indicate to all handles on the pipe that we're dead */
2602 if(Curl_multi_pipeline_enabled(data->multi)) {
2603 signalPipeClose(conn->send_pipe, TRUE);
2604 signalPipeClose(conn->recv_pipe, TRUE);
2608 data->state.current_conn = NULL;
2609 Curl_speedinit(data);
2615 * This function should return TRUE if the socket is to be assumed to
2616 * be dead. Most commonly this happens when the server has closed the
2617 * connection due to inactivity.
2619 static bool SocketIsDead(curl_socket_t sock)
2622 bool ret_val = TRUE;
2624 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2632 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2633 const struct connectdata *conn)
2635 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2636 Curl_multi_pipeline_enabled(handle->multi) &&
2637 (handle->set.httpreq == HTTPREQ_GET ||
2638 handle->set.httpreq == HTTPREQ_HEAD) &&
2639 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2645 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2647 return Curl_multi_pipeline_enabled(handle->multi);
2650 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2651 struct curl_llist *pipeline)
2653 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2654 return CURLE_OUT_OF_MEMORY;
2655 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2659 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2660 struct curl_llist *pipeline)
2662 struct curl_llist_element *curr;
2664 curr = pipeline->head;
2666 if(curr->ptr == handle) {
2667 Curl_llist_remove(pipeline, curr, NULL);
2668 return 1; /* we removed a handle */
2676 #if 0 /* this code is saved here as it is useful for debugging purposes */
2677 static void Curl_printPipeline(struct curl_llist *pipeline)
2679 struct curl_llist_element *curr;
2681 curr = pipeline->head;
2683 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2684 infof(data, "Handle in pipeline: %s\n", data->state.path);
2690 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2692 struct curl_llist_element *curr = pipeline->head;
2694 return (struct SessionHandle *) curr->ptr;
2700 /* remove the specified connection from all (possible) pipelines and related
2702 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2703 struct connectdata *conn)
2705 bool recv_head = (conn->readchannel_inuse &&
2706 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2708 bool send_head = (conn->writechannel_inuse &&
2709 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2711 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2712 conn->readchannel_inuse = FALSE;
2713 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2714 conn->writechannel_inuse = FALSE;
2717 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2719 struct curl_llist_element *curr;
2724 curr = pipeline->head;
2726 struct curl_llist_element *next = curr->next;
2727 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2729 #ifdef DEBUGBUILD /* debug-only code */
2730 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2732 infof(data, "signalPipeClose() found BAAD easy handle\n");
2737 data->state.pipe_broke = TRUE;
2738 Curl_multi_handlePipeBreak(data);
2739 Curl_llist_remove(pipeline, curr, NULL);
2745 * This function finds the connection in the connection
2746 * cache that has been unused for the longest time.
2748 * Returns the pointer to the oldest idle connection, or NULL if none was
2751 static struct connectdata *
2752 find_oldest_idle_connection(struct SessionHandle *data)
2754 struct conncache *bc = data->state.conn_cache;
2755 struct curl_hash_iterator iter;
2756 struct curl_llist_element *curr;
2757 struct curl_hash_element *he;
2761 struct connectdata *conn_candidate = NULL;
2762 struct connectbundle *bundle;
2766 Curl_hash_start_iterate(bc->hash, &iter);
2768 he = Curl_hash_next_element(&iter);
2770 struct connectdata *conn;
2774 curr = bundle->conn_list->head;
2779 /* Set higher score for the age passed since the connection was used */
2780 score = Curl_tvdiff(now, conn->now);
2782 if(score > highscore) {
2784 conn_candidate = conn;
2790 he = Curl_hash_next_element(&iter);
2793 return conn_candidate;
2797 * This function finds the connection in the connection
2798 * bundle that has been unused for the longest time.
2800 * Returns the pointer to the oldest idle connection, or NULL if none was
2803 static struct connectdata *
2804 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2805 struct connectbundle *bundle)
2807 struct curl_llist_element *curr;
2811 struct connectdata *conn_candidate = NULL;
2812 struct connectdata *conn;
2818 curr = bundle->conn_list->head;
2823 /* Set higher score for the age passed since the connection was used */
2824 score = Curl_tvdiff(now, conn->now);
2826 if(score > highscore) {
2828 conn_candidate = conn;
2834 return conn_candidate;
2838 * Given one filled in connection struct (named needle), this function should
2839 * detect if there already is one that has all the significant details
2840 * exactly the same and thus should be used instead.
2842 * If there is a match, this function returns TRUE - and has marked the
2843 * connection as 'in-use'. It must later be called with ConnectionDone() to
2844 * return back to 'idle' (unused) state.
2846 * The force_reuse flag is set if the connection must be used, even if
2847 * the pipelining strategy wants to open a new connection instead of reusing.
2850 ConnectionExists(struct SessionHandle *data,
2851 struct connectdata *needle,
2852 struct connectdata **usethis,
2855 struct connectdata *check;
2856 struct connectdata *chosen = 0;
2857 bool canPipeline = IsPipeliningPossible(data, needle);
2858 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2859 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2860 struct connectbundle *bundle;
2862 *force_reuse = FALSE;
2864 /* We can't pipe if the site is blacklisted */
2865 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2866 canPipeline = FALSE;
2869 /* Look up the bundle with all the connections to this
2871 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2874 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2875 size_t best_pipe_len = max_pipe_len;
2876 struct curl_llist_element *curr;
2878 infof(data, "Found bundle for host %s: %p\n", needle->host.name, bundle);
2880 /* We can't pipe if we don't know anything about the server */
2881 if(canPipeline && !bundle->server_supports_pipelining) {
2882 infof(data, "Server doesn't support pipelining\n");
2883 canPipeline = FALSE;
2886 curr = bundle->conn_list->head;
2889 bool credentialsMatch = FALSE;
2893 * Note that if we use a HTTP proxy, we check connections to that
2894 * proxy and not to the actual remote server.
2899 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2901 if(!pipeLen && !check->inuse) {
2902 /* The check for a dead socket makes sense only if there are no
2903 handles in pipeline and the connection isn't already marked in
2906 if(check->handler->protocol & CURLPROTO_RTSP)
2907 /* RTSP is a special case due to RTP interleaving */
2908 dead = Curl_rtsp_connisdead(check);
2910 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2914 infof(data, "Connection %d seems to be dead!\n",
2915 check->connection_id);
2917 /* disconnect resources */
2918 Curl_disconnect(check, /* dead_connection */ TRUE);
2924 /* Make sure the pipe has only GET requests */
2925 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2926 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2928 if(!IsPipeliningPossible(sh, check))
2932 if(!IsPipeliningPossible(rh, check))
2938 /* can only happen within multi handles, and means that another easy
2939 handle is using this connection */
2943 if(Curl_resolver_asynch()) {
2944 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2945 completed yet and until then we don't re-use this connection */
2946 if(!check->ip_addr_str[0]) {
2948 "Connection #%ld is still name resolving, can't reuse\n",
2949 check->connection_id);
2954 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2955 check->bits.close) {
2956 /* Don't pick a connection that hasn't connected yet or that is going
2958 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2959 check->connection_id);
2961 if(check->recv_pipe->size > 0) {
2963 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2964 check->connection_id);
2971 if((needle->handler->flags&PROTOPT_SSL) !=
2972 (check->handler->flags&PROTOPT_SSL))
2973 /* don't do mixed SSL and non-SSL connections */
2974 if(!(needle->handler->protocol & check->handler->protocol))
2975 /* except protocols that have been upgraded via TLS */
2978 if(needle->handler->flags&PROTOPT_SSL) {
2979 if((data->set.ssl.verifypeer != check->verifypeer) ||
2980 (data->set.ssl.verifyhost != check->verifyhost))
2984 if(needle->bits.proxy != check->bits.proxy)
2985 /* don't do mixed proxy and non-proxy connections */
2988 if(!canPipeline && check->inuse)
2989 /* this request can't be pipelined but the checked connection is
2990 already in use so we skip it */
2993 if(needle->localdev || needle->localport) {
2994 /* If we are bound to a specific local end (IP+port), we must not
2995 re-use a random other one, although if we didn't ask for a
2996 particular one we can reuse one that was bound.
2998 This comparison is a bit rough and too strict. Since the input
2999 parameters can be specified in numerous ways and still end up the
3000 same it would take a lot of processing to make it really accurate.
3001 Instead, this matching will assume that re-uses of bound connections
3002 will most likely also re-use the exact same binding parameters and
3003 missing out a few edge cases shouldn't hurt anyone very much.
3005 if((check->localport != needle->localport) ||
3006 (check->localportrange != needle->localportrange) ||
3008 !needle->localdev ||
3009 strcmp(check->localdev, needle->localdev))
3013 if((needle->handler->protocol & CURLPROTO_FTP) ||
3014 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3015 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3016 and password as well */
3017 if(!strequal(needle->user, check->user) ||
3018 !strequal(needle->passwd, check->passwd)) {
3019 /* one of them was different */
3022 credentialsMatch = TRUE;
3025 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3026 (needle->bits.httpproxy && check->bits.httpproxy &&
3027 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3028 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3029 (needle->port == check->port))) {
3030 /* The requested connection does not use a HTTP proxy or it uses SSL or
3031 it is a non-SSL protocol tunneled over the same http proxy name and
3032 port number or it is a non-SSL protocol which is allowed to be
3035 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3036 needle->handler->protocol & check->handler->protocol) &&
3037 Curl_raw_equal(needle->host.name, check->host.name) &&
3038 needle->remote_port == check->remote_port) {
3039 if(needle->handler->flags & PROTOPT_SSL) {
3040 /* This is a SSL connection so verify that we're using the same
3041 SSL options as well */
3042 if(!Curl_ssl_config_matches(&needle->ssl_config,
3043 &check->ssl_config)) {
3045 "Connection #%ld has different SSL parameters, "
3047 check->connection_id));
3050 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3052 "Connection #%ld has not started SSL connect, "
3054 check->connection_id));
3061 else { /* The requested needle connection is using a proxy,
3062 is the checked one using the same host, port and type? */
3063 if(check->bits.proxy &&
3064 (needle->proxytype == check->proxytype) &&
3065 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3066 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3067 needle->port == check->port) {
3068 /* This is the same proxy connection, use it! */
3074 /* If we are looking for an NTLM connection, check if this is already
3075 authenticating with the right credentials. If not, keep looking so
3076 that we can reuse NTLM connections if possible. (Especially we
3077 must not reuse the same connection if partway through
3080 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3083 /* We must use this connection, no other */
3084 *force_reuse = TRUE;
3092 /* We can pipeline if we want to. Let's continue looking for
3093 the optimal connection to use, i.e the shortest pipe that is not
3097 /* We have the optimal connection. Let's stop looking. */
3102 /* We can't use the connection if the pipe is full */
3103 if(pipeLen >= max_pipe_len)
3106 /* We can't use the connection if the pipe is penalized */
3107 if(Curl_pipeline_penalized(data, check))
3110 if(pipeLen < best_pipe_len) {
3111 /* This connection has a shorter pipe so far. We'll pick this
3112 and continue searching */
3114 best_pipe_len = pipeLen;
3119 /* We have found a connection. Let's stop searching. */
3129 return TRUE; /* yes, we found one to use! */
3132 return FALSE; /* no matching connecting exists */
3135 /* Mark the connection as 'idle', or close it if the cache is full.
3136 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3138 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3140 /* data->multi->maxconnects can be negative, deal with it. */
3141 size_t maxconnects =
3142 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3143 struct connectdata *conn_candidate = NULL;
3145 /* Mark the current connection as 'unused' */
3146 conn->inuse = FALSE;
3148 if(maxconnects > 0 &&
3149 data->state.conn_cache->num_connections > maxconnects) {
3150 infof(data, "Connection cache is full, closing the oldest one.\n");
3152 conn_candidate = find_oldest_idle_connection(data);
3154 if(conn_candidate) {
3155 /* Set the connection's owner correctly */
3156 conn_candidate->data = data;
3158 /* the winner gets the honour of being disconnected */
3159 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3163 return (conn_candidate == conn) ? FALSE : TRUE;
3167 * The given input connection struct pointer is to be stored in the connection
3168 * cache. If the cache is already full, least interesting existing connection
3169 * (if any) gets closed.
3171 * The given connection should be unique. That must've been checked prior to
3174 static CURLcode ConnectionStore(struct SessionHandle *data,
3175 struct connectdata *conn)
3177 static int connection_id_counter = 0;
3181 /* Assign a number to the connection for easier tracking in the log
3183 conn->connection_id = connection_id_counter++;
3185 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3186 if(result != CURLE_OK)
3187 conn->connection_id = -1;
3192 /* after a TCP connection to the proxy has been verified, this function does
3193 the next magic step.
3195 Note: this function's sub-functions call failf()
3198 CURLcode Curl_connected_proxy(struct connectdata *conn)
3200 if(!conn->bits.proxy)
3203 switch(conn->proxytype) {
3204 #ifndef CURL_DISABLE_PROXY
3205 case CURLPROXY_SOCKS5:
3206 case CURLPROXY_SOCKS5_HOSTNAME:
3207 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3208 conn->host.name, conn->remote_port,
3211 case CURLPROXY_SOCKS4:
3212 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3213 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3215 case CURLPROXY_SOCKS4A:
3216 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3217 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3219 #endif /* CURL_DISABLE_PROXY */
3220 case CURLPROXY_HTTP:
3221 case CURLPROXY_HTTP_1_0:
3222 /* do nothing here. handled later. */
3226 } /* switch proxytype */
3231 static CURLcode ConnectPlease(struct SessionHandle *data,
3232 struct connectdata *conn,
3236 Curl_addrinfo *addr;
3237 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3238 char *hostname = conn->bits.proxy?conn->proxy.name:conn->host.name;
3240 infof(data, "About to connect() to %s%s port %ld (#%ld)\n",
3241 conn->bits.proxy?"proxy ":"",
3242 hostname, conn->port, conn->connection_id);
3247 /*************************************************************
3248 * Connect to server/proxy
3249 *************************************************************/
3250 result= Curl_connecthost(conn,
3252 &conn->sock[FIRSTSOCKET],
3255 if(CURLE_OK == result) {
3256 /* All is cool, we store the current information */
3257 conn->ip_addr = addr;
3260 result = Curl_connected_proxy(conn);
3262 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
3263 Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
3269 *connected = FALSE; /* mark it as not connected */
3275 * verboseconnect() displays verbose information after a connect
3277 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3278 void Curl_verboseconnect(struct connectdata *conn)
3280 if(conn->data->set.verbose)
3281 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3282 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3283 conn->ip_addr_str, conn->port, conn->connection_id);
3287 int Curl_protocol_getsock(struct connectdata *conn,
3288 curl_socket_t *socks,
3291 if(conn->handler->proto_getsock)
3292 return conn->handler->proto_getsock(conn, socks, numsocks);
3293 return GETSOCK_BLANK;
3296 int Curl_doing_getsock(struct connectdata *conn,
3297 curl_socket_t *socks,
3300 if(conn && conn->handler->doing_getsock)
3301 return conn->handler->doing_getsock(conn, socks, numsocks);
3302 return GETSOCK_BLANK;
3306 * We are doing protocol-specific connecting and this is being called over and
3307 * over from the multi interface until the connection phase is done on
3311 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3314 CURLcode result=CURLE_OK;
3316 if(conn && conn->handler->connecting) {
3318 result = conn->handler->connecting(conn, done);
3327 * We are DOING this is being called over and over from the multi interface
3328 * until the DOING phase is done on protocol layer.
3331 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3333 CURLcode result=CURLE_OK;
3335 if(conn && conn->handler->doing) {
3337 result = conn->handler->doing(conn, done);
3346 * We have discovered that the TCP connection has been successful, we can now
3347 * proceed with some action.
3350 CURLcode Curl_protocol_connect(struct connectdata *conn,
3351 bool *protocol_done)
3353 CURLcode result=CURLE_OK;
3355 *protocol_done = FALSE;
3357 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3358 /* We already are connected, get back. This may happen when the connect
3359 worked fine in the first call, like when we connect to a local server
3360 or proxy. Note that we don't know if the protocol is actually done.
3362 Unless this protocol doesn't have any protocol-connect callback, as
3363 then we know we're done. */
3364 if(!conn->handler->connecting)
3365 *protocol_done = TRUE;
3370 if(!conn->bits.protoconnstart) {
3372 result = Curl_proxy_connect(conn);
3376 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3377 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3378 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3379 before proceeding further. Return CURLE_OK so we'll be called again */
3382 if(conn->handler->connect_it) {
3383 /* is there a protocol-specific connect() procedure? */
3385 /* Call the protocol-specific connect function */
3386 result = conn->handler->connect_it(conn, protocol_done);
3389 *protocol_done = TRUE;
3391 /* it has started, possibly even completed but that knowledge isn't stored
3394 conn->bits.protoconnstart = TRUE;
3397 return result; /* pass back status */
3401 * Helpers for IDNA convertions.
3403 static bool is_ASCII_name(const char *hostname)
3405 const unsigned char *ch = (const unsigned char*)hostname;
3416 * Check if characters in hostname is allowed in Top Level Domain.
3418 static bool tld_check_name(struct SessionHandle *data,
3419 const char *ace_hostname)
3422 char *uc_name = NULL;
3424 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3425 const char *tld_errmsg = "<no msg>";
3430 /* Convert (and downcase) ACE-name back into locale's character set */
3431 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3432 if(rc != IDNA_SUCCESS)
3435 rc = tld_check_lz(uc_name, &err_pos, NULL);
3436 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3437 #ifdef HAVE_TLD_STRERROR
3438 if(rc != TLD_SUCCESS)
3439 tld_errmsg = tld_strerror((Tld_rc)rc);
3441 if(rc == TLD_INVALID)
3442 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3443 tld_errmsg, err_pos, uc_name[err_pos],
3444 uc_name[err_pos] & 255);
3445 else if(rc != TLD_SUCCESS)
3446 infof(data, "WARNING: TLD check for %s failed; %s\n",
3447 uc_name, tld_errmsg);
3448 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3451 if(rc != TLD_SUCCESS)
3459 * Perform any necessary IDN conversion of hostname
3461 static void fix_hostname(struct SessionHandle *data,
3462 struct connectdata *conn, struct hostname *host)
3467 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3471 /* set the name we use to display the host name */
3472 host->dispname = host->name;
3473 if(!is_ASCII_name(host->name)) {
3475 /*************************************************************
3476 * Check name for non-ASCII and convert hostname to ACE form.
3477 *************************************************************/
3478 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3479 char *ace_hostname = NULL;
3480 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3481 infof (data, "Input domain encoded as `%s'\n",
3482 stringprep_locale_charset ());
3483 if(rc != IDNA_SUCCESS)
3484 infof(data, "Failed to convert %s to ACE; %s\n",
3485 host->name, Curl_idn_strerror(conn,rc));
3487 /* tld_check_name() displays a warning if the host name contains
3488 "illegal" characters for this TLD */
3489 (void)tld_check_name(data, ace_hostname);
3491 host->encalloc = ace_hostname;
3492 /* change the name pointer to point to the encoded hostname */
3493 host->name = host->encalloc;
3496 #elif defined(USE_WIN32_IDN)
3497 /*************************************************************
3498 * Check name for non-ASCII and convert hostname to ACE form.
3499 *************************************************************/
3500 char *ace_hostname = NULL;
3501 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3503 infof(data, "Failed to convert %s to ACE;\n",
3506 host->encalloc = ace_hostname;
3507 /* change the name pointer to point to the encoded hostname */
3508 host->name = host->encalloc;
3511 infof(data, "IDN support not present, can't parse Unicode domains\n");
3516 static void llist_dtor(void *user, void *element)
3524 * Allocate and initialize a new connectdata object.
3526 static struct connectdata *allocate_conn(struct SessionHandle *data)
3528 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3532 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3533 already from start to avoid NULL
3534 situations and checks */
3536 /* and we setup a few fields in case we end up actually using this struct */
3538 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3539 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3540 conn->connection_id = -1; /* no ID */
3541 conn->port = -1; /* unknown at this point */
3543 /* Default protocol-independent behavior doesn't support persistent
3544 connections, so we set this to force-close. Protocols that support
3545 this need to set this to FALSE in their "curl_do" functions. */
3546 conn->bits.close = TRUE;
3548 /* Store creation time to help future close decision making */
3549 conn->created = Curl_tvnow();
3551 conn->data = data; /* Setup the association between this connection
3552 and the SessionHandle */
3554 conn->proxytype = data->set.proxytype; /* type */
3556 #ifdef CURL_DISABLE_PROXY
3558 conn->bits.proxy = FALSE;
3559 conn->bits.httpproxy = FALSE;
3560 conn->bits.proxy_user_passwd = FALSE;
3561 conn->bits.tunnel_proxy = FALSE;
3563 #else /* CURL_DISABLE_PROXY */
3565 /* note that these two proxy bits are now just on what looks to be
3566 requested, they may be altered down the road */
3567 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3568 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3569 conn->bits.httpproxy = (conn->bits.proxy &&
3570 (conn->proxytype == CURLPROXY_HTTP ||
3571 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3572 conn->bits.proxy_user_passwd =
3573 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3574 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3576 #endif /* CURL_DISABLE_PROXY */
3578 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3579 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3580 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3582 conn->verifypeer = data->set.ssl.verifypeer;
3583 conn->verifyhost = data->set.ssl.verifyhost;
3585 conn->ip_version = data->set.ipver;
3587 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3588 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3589 conn->ntlm_auth_hlpr_pid = 0;
3590 conn->challenge_header = NULL;
3591 conn->response_header = NULL;
3594 if(Curl_multi_pipeline_enabled(data->multi) &&
3595 !conn->master_buffer) {
3596 /* Allocate master_buffer to be used for pipelining */
3597 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3598 if(!conn->master_buffer)
3602 /* Initialize the pipeline lists */
3603 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3604 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3605 if(!conn->send_pipe || !conn->recv_pipe)
3608 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
3609 conn->data_prot = PROT_CLEAR;
3612 /* Store the local bind parameters that will be used for this connection */
3613 if(data->set.str[STRING_DEVICE]) {
3614 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3618 conn->localportrange = data->set.localportrange;
3619 conn->localport = data->set.localport;
3621 /* the close socket stuff needs to be copied to the connection struct as
3622 it may live on without (this specific) SessionHandle */
3623 conn->fclosesocket = data->set.fclosesocket;
3624 conn->closesocket_client = data->set.closesocket_client;
3629 Curl_llist_destroy(conn->send_pipe, NULL);
3630 Curl_llist_destroy(conn->recv_pipe, NULL);
3632 conn->send_pipe = NULL;
3633 conn->recv_pipe = NULL;
3635 Curl_safefree(conn->master_buffer);
3636 Curl_safefree(conn->localdev);
3637 Curl_safefree(conn);
3641 static CURLcode findprotocol(struct SessionHandle *data,
3642 struct connectdata *conn,
3643 const char *protostr)
3645 const struct Curl_handler * const *pp;
3646 const struct Curl_handler *p;
3648 /* Scan protocol handler table and match against 'protostr' to set a few
3649 variables based on the URL. Now that the handler may be changed later
3650 when the protocol specific setup function is called. */
3651 for(pp = protocols; (p = *pp) != NULL; pp++) {
3652 if(Curl_raw_equal(p->scheme, protostr)) {
3653 /* Protocol found in table. Check if allowed */
3654 if(!(data->set.allowed_protocols & p->protocol))
3658 /* it is allowed for "normal" request, now do an extra check if this is
3659 the result of a redirect */
3660 if(data->state.this_is_a_follow &&
3661 !(data->set.redir_protocols & p->protocol))
3665 /* Perform setup complement if some. */
3666 conn->handler = conn->given = p;
3668 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3674 /* The protocol was not found in the table, but we don't have to assign it
3675 to anything since it is already assigned to a dummy-struct in the
3676 create_conn() function when the connectdata struct is allocated. */
3677 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3680 return CURLE_UNSUPPORTED_PROTOCOL;
3684 * Parse URL and fill in the relevant members of the connection struct.
3686 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3687 struct connectdata *conn,
3689 char *user, char *passwd, char *options)
3693 char *path = data->state.path;
3699 bool rebuild_url = FALSE;
3701 *prot_missing = FALSE;
3703 /*************************************************************
3706 * We need to parse the url even when using the proxy, because we will need
3707 * the hostname and port in case we are trying to SSL connect through the
3708 * proxy -- and we don't know if we will need to use SSL until we parse the
3710 ************************************************************/
3711 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3713 Curl_raw_equal(protobuf, "file")) {
3714 if(path[0] == '/' && path[1] == '/') {
3715 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3716 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3717 * file://localhost/<path> is similar to how other schemes treat missing
3718 * hostnames. See RFC 1808. */
3720 /* This cannot be done with strcpy() in a portable manner, since the
3721 memory areas overlap! */
3722 memmove(path, path + 2, strlen(path + 2)+1);
3725 * we deal with file://<host>/<path> differently since it supports no
3726 * hostname other than "localhost" and "127.0.0.1", which is unique among
3727 * the URL protocols specified in RFC 1738
3729 if(path[0] != '/') {
3730 /* the URL included a host name, we ignore host names in file:// URLs
3731 as the standards don't define what to do with them */
3732 char *ptr=strchr(path, '/');
3734 /* there was a slash present
3736 RFC1738 (section 3.1, page 5) says:
3738 The rest of the locator consists of data specific to the scheme,
3739 and is known as the "url-path". It supplies the details of how the
3740 specified resource can be accessed. Note that the "/" between the
3741 host (or port) and the url-path is NOT part of the url-path.
3743 As most agents use file://localhost/foo to get '/foo' although the
3744 slash preceding foo is a separator and not a slash for the path,
3745 a URL as file://localhost//foo must be valid as well, to refer to
3746 the same file with an absolute path.
3749 if(ptr[1] && ('/' == ptr[1]))
3750 /* if there was two slashes, we skip the first one as that is then
3751 used truly as a separator */
3754 /* This cannot be made with strcpy, as the memory chunks overlap! */
3755 memmove(path, ptr, strlen(ptr)+1);
3759 protop = "file"; /* protocol string */
3765 if(2 > sscanf(data->change.url,
3766 "%15[^\n:]://%[^\n/?]%[^\n]",
3768 conn->host.name, path)) {
3771 * The URL was badly formatted, let's try the browser-style _without_
3772 * protocol specified like 'http://'.
3774 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3777 * We couldn't even get this format.
3778 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3779 * assigned, but the return value is EOF!
3781 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3782 if(!(rc == -1 && *conn->host.name))
3785 failf(data, "<url> malformed");
3786 return CURLE_URL_MALFORMAT;
3791 * Since there was no protocol part specified, we guess what protocol it
3792 * is based on the first letters of the server name.
3795 /* Note: if you add a new protocol, please update the list in
3796 * lib/version.c too! */
3798 if(checkprefix("FTP.", conn->host.name))
3800 else if(checkprefix("DICT.", conn->host.name))
3802 else if(checkprefix("LDAP.", conn->host.name))
3804 else if(checkprefix("IMAP.", conn->host.name))
3806 else if(checkprefix("SMTP.", conn->host.name))
3808 else if(checkprefix("POP3.", conn->host.name))
3814 *prot_missing = TRUE; /* not given in URL */
3820 /* We search for '?' in the host name (but only on the right side of a
3821 * @-letter to allow ?-letters in username and password) to handle things
3822 * like http://example.com?param= (notice the missing '/').
3824 at = strchr(conn->host.name, '@');
3826 query = strchr(at+1, '?');
3828 query = strchr(conn->host.name, '?');
3831 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3832 a slash after the '?', that is where the path currently begins and the
3833 '?string' is still part of the host name.
3835 We must move the trailing part from the host name and put it first in
3836 the path. And have it all prefixed with a slash.
3839 size_t hostlen = strlen(query);
3840 size_t pathlen = strlen(path);
3842 /* move the existing path plus the zero byte forward, to make room for
3843 the host-name part */
3844 memmove(path+hostlen+1, path, pathlen+1);
3846 /* now copy the trailing host part in front of the existing path */
3847 memcpy(path+1, query, hostlen);
3849 path[0]='/'; /* prepend the missing slash */
3852 *query=0; /* now cut off the hostname at the ? */
3855 /* if there's no path set, use a single slash */
3860 /* If the URL is malformatted (missing a '/' after hostname before path) we
3861 * insert a slash here. The only letter except '/' we accept to start a path
3864 if(path[0] == '?') {
3865 /* We need this function to deal with overlapping memory areas. We know
3866 that the memory area 'path' points to is 'urllen' bytes big and that
3867 is bigger than the path. Use +1 to move the zero byte too. */
3868 memmove(&path[1], path, strlen(path)+1);
3873 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3874 char *newp = Curl_dedotdotify(path);
3876 return CURLE_OUT_OF_MEMORY;
3878 if(strcmp(newp, path)) {
3880 free(data->state.pathbuffer);
3881 data->state.pathbuffer = newp;
3882 data->state.path = newp;
3890 * "rebuild_url" means that one or more URL components have been modified so
3891 * we need to generate an updated full version. We need the corrected URL
3892 * when communicating over HTTP proxy and we don't know at this point if
3893 * we're using a proxy or not.
3898 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3900 size_t urllen = strlen(data->change.url); /* original URL length */
3902 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3904 return CURLE_OUT_OF_MEMORY;
3906 /* copy the prefix */
3907 memcpy(reurl, data->change.url, urllen - (plen-1));
3909 /* append the trailing piece + zerobyte */
3910 memcpy(&reurl[urllen - (plen-1)], path, plen + 1);
3912 /* possible free the old one */
3913 if(data->change.url_alloc) {
3914 Curl_safefree(data->change.url);
3915 data->change.url_alloc = FALSE;
3918 infof(data, "Rebuilt URL to: %s\n", reurl);
3920 data->change.url = reurl;
3921 data->change.url_alloc = TRUE; /* free this later */
3925 * Parse the login details from the URL and strip them out of
3928 result = parse_url_login(data, conn, user, passwd, options);
3929 if(result != CURLE_OK)
3932 if(conn->host.name[0] == '[') {
3933 /* This looks like an IPv6 address literal. See if there is an address
3935 char *percent = strstr (conn->host.name, "%25");
3938 unsigned long scope = strtoul (percent + 3, &endp, 10);
3940 /* The address scope was well formed. Knock it out of the
3942 memmove(percent, endp, strlen(endp)+1);
3943 if(!data->state.this_is_a_follow)
3944 /* Don't honour a scope given in a Location: header */
3945 conn->scope = (unsigned int)scope;
3948 infof(data, "Invalid IPv6 address format\n");
3953 /* Override any scope that was set above. */
3954 conn->scope = data->set.scope;
3956 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3957 last part of the URI. We are looking for the first '#' so that we deal
3958 gracefully with non conformant URI such as http://example.com#foo#bar. */
3959 fragment = strchr(path, '#');
3963 /* we know the path part ended with a fragment, so we know the full URL
3964 string does too and we need to cut it off from there so it isn't used
3966 fragment = strchr(data->change.url, '#');
3972 * So if the URL was A://B/C#D,
3974 * conn->host.name is B
3975 * data->state.path is /C
3978 return findprotocol(data, conn, protop);
3982 * If we're doing a resumed transfer, we need to setup our stuff
3985 static CURLcode setup_range(struct SessionHandle *data)
3987 struct UrlState *s = &data->state;
3988 s->resume_from = data->set.set_resume_from;
3989 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3990 if(s->rangestringalloc)
3994 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
3996 s->range = strdup(data->set.str[STRING_SET_RANGE]);
3998 s->rangestringalloc = (s->range)?TRUE:FALSE;
4001 return CURLE_OUT_OF_MEMORY;
4003 /* tell ourselves to fetch this range */
4004 s->use_range = TRUE; /* enable range download */
4007 s->use_range = FALSE; /* disable range download */
4013 /***************************************************************
4014 * Setup connection internals specific to the requested protocol.
4015 * This MUST get called after proxy magic has been figured out.
4016 ***************************************************************/
4017 static CURLcode setup_connection_internals(struct connectdata *conn)
4019 const struct Curl_handler * p;
4022 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4024 /* Scan protocol handler table. */
4026 /* Perform setup complement if some. */
4029 if(p->setup_connection) {
4030 result = (*p->setup_connection)(conn);
4032 if(result != CURLE_OK)
4035 p = conn->handler; /* May have changed. */
4039 /* we check for -1 here since if proxy was detected already, this
4040 was very likely already set to the proxy port */
4041 conn->port = p->defport;
4042 conn->remote_port = (unsigned short)conn->given->defport;
4047 #ifndef CURL_DISABLE_PROXY
4048 /****************************************************************
4049 * Checks if the host is in the noproxy list. returns true if it matches
4050 * and therefore the proxy should NOT be used.
4051 ****************************************************************/
4052 static bool check_noproxy(const char* name, const char* no_proxy)
4054 /* no_proxy=domain1.dom,host.domain2.dom
4055 * (a comma-separated list of hosts which should
4056 * not be proxied, or an asterisk to override
4057 * all proxy variables)
4061 const char* separator = ", ";
4062 size_t no_proxy_len;
4066 if(no_proxy && no_proxy[0]) {
4067 if(Curl_raw_equal("*", no_proxy)) {
4071 /* NO_PROXY was specified and it wasn't just an asterisk */
4073 no_proxy_len = strlen(no_proxy);
4074 endptr = strchr(name, ':');
4076 namelen = endptr - name;
4078 namelen = strlen(name);
4080 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4081 while(tok_start < no_proxy_len &&
4082 strchr(separator, no_proxy[tok_start]) != NULL) {
4083 /* Look for the beginning of the token. */
4087 if(tok_start == no_proxy_len)
4088 break; /* It was all trailing separator chars, no more tokens. */
4090 for(tok_end = tok_start; tok_end < no_proxy_len &&
4091 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4092 /* Look for the end of the token. */
4095 /* To match previous behaviour, where it was necessary to specify
4096 * ".local.com" to prevent matching "notlocal.com", we will leave
4099 if(no_proxy[tok_start] == '.')
4102 if((tok_end - tok_start) <= namelen) {
4103 /* Match the last part of the name to the domain we are checking. */
4104 const char *checkn = name + namelen - (tok_end - tok_start);
4105 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4106 tok_end - tok_start)) {
4107 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4108 /* We either have an exact match, or the previous character is a .
4109 * so it is within the same domain, so no proxy for this host.
4114 } /* if((tok_end - tok_start) <= namelen) */
4115 } /* for(tok_start = 0; tok_start < no_proxy_len;
4116 tok_start = tok_end + 1) */
4117 } /* NO_PROXY was specified and it wasn't just an asterisk */
4122 /****************************************************************
4123 * Detect what (if any) proxy to use. Remember that this selects a host
4124 * name and is not limited to HTTP proxies only.
4125 * The returned pointer must be freed by the caller (unless NULL)
4126 ****************************************************************/
4127 static char *detect_proxy(struct connectdata *conn)
4131 #ifndef CURL_DISABLE_HTTP
4132 /* If proxy was not specified, we check for default proxy environment
4133 * variables, to enable i.e Lynx compliance:
4135 * http_proxy=http://some.server.dom:port/
4136 * https_proxy=http://some.server.dom:port/
4137 * ftp_proxy=http://some.server.dom:port/
4138 * no_proxy=domain1.dom,host.domain2.dom
4139 * (a comma-separated list of hosts which should
4140 * not be proxied, or an asterisk to override
4141 * all proxy variables)
4142 * all_proxy=http://some.server.dom:port/
4143 * (seems to exist for the CERN www lib. Probably
4144 * the first to check for.)
4146 * For compatibility, the all-uppercase versions of these variables are
4147 * checked if the lowercase versions don't exist.
4149 char *no_proxy=NULL;
4150 char proxy_env[128];
4152 no_proxy=curl_getenv("no_proxy");
4154 no_proxy=curl_getenv("NO_PROXY");
4156 if(!check_noproxy(conn->host.name, no_proxy)) {
4157 /* It was not listed as without proxy */
4158 const char *protop = conn->handler->scheme;
4159 char *envp = proxy_env;
4162 /* Now, build <protocol>_proxy and check for such a one to use */
4164 *envp++ = (char)tolower((int)*protop++);
4167 strcpy(envp, "_proxy");
4169 /* read the protocol proxy: */
4170 prox=curl_getenv(proxy_env);
4173 * We don't try the uppercase version of HTTP_PROXY because of
4176 * When curl is used in a webserver application
4177 * environment (cgi or php), this environment variable can
4178 * be controlled by the web server user by setting the
4179 * http header 'Proxy:' to some value.
4181 * This can cause 'internal' http/ftp requests to be
4182 * arbitrarily redirected by any external attacker.
4184 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4185 /* There was no lowercase variable, try the uppercase version: */
4186 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4187 prox=curl_getenv(proxy_env);
4190 if(prox && *prox) { /* don't count "" strings */
4191 proxy = prox; /* use this */
4194 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4196 proxy=curl_getenv("ALL_PROXY");
4198 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4203 #else /* !CURL_DISABLE_HTTP */
4206 #endif /* CURL_DISABLE_HTTP */
4212 * If this is supposed to use a proxy, we need to figure out the proxy
4213 * host name, so that we can re-use an existing connection
4214 * that may exist registered to the same proxy host.
4215 * proxy will be freed before this function returns.
4217 static CURLcode parse_proxy(struct SessionHandle *data,
4218 struct connectdata *conn, char *proxy)
4223 /* We use 'proxyptr' to point to the proxy name from now on... */
4228 /* We do the proxy host string parsing here. We want the host name and the
4229 * port name. Accept a protocol:// prefix
4232 /* Parse the protocol part if present */
4233 endofprot = strstr(proxy, "://");
4235 proxyptr = endofprot+3;
4236 if(checkprefix("socks5h", proxy))
4237 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4238 else if(checkprefix("socks5", proxy))
4239 conn->proxytype = CURLPROXY_SOCKS5;
4240 else if(checkprefix("socks4a", proxy))
4241 conn->proxytype = CURLPROXY_SOCKS4A;
4242 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4243 conn->proxytype = CURLPROXY_SOCKS4;
4244 /* Any other xxx:// : change to http proxy */
4247 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4249 /* Is there a username and password given in this proxy url? */
4250 atsign = strchr(proxyptr, '@');
4252 CURLcode res = CURLE_OK;
4253 char *proxyuser = NULL;
4254 char *proxypasswd = NULL;
4256 res = parse_login_details(proxyptr, atsign - proxyptr,
4257 &proxyuser, &proxypasswd, NULL);
4259 /* found user and password, rip them out. note that we are
4260 unescaping them, as there is otherwise no way to have a
4261 username or password with reserved characters like ':' in
4263 Curl_safefree(conn->proxyuser);
4264 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4265 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4267 conn->proxyuser = strdup("");
4269 if(!conn->proxyuser)
4270 res = CURLE_OUT_OF_MEMORY;
4272 Curl_safefree(conn->proxypasswd);
4273 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4274 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4276 conn->proxypasswd = strdup("");
4278 if(!conn->proxypasswd)
4279 res = CURLE_OUT_OF_MEMORY;
4283 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4284 atsign++; /* the right side of the @-letter */
4287 proxyptr = atsign; /* now use this instead */
4289 res = CURLE_OUT_OF_MEMORY;
4293 Curl_safefree(proxyuser);
4294 Curl_safefree(proxypasswd);
4300 /* start scanning for port number at this point */
4303 /* detect and extract RFC2732-style IPv6-addresses */
4304 if(*proxyptr == '[') {
4305 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4306 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4310 /* yeps, it ended nicely with a bracket as well */
4313 infof(data, "Invalid IPv6 address format\n");
4315 /* Note that if this didn't end with a bracket, we still advanced the
4316 * proxyptr first, but I can't see anything wrong with that as no host
4317 * name nor a numeric can legally start with a bracket.
4321 /* Get port number off proxy.server.com:1080 */
4322 prox_portno = strchr(portptr, ':');
4324 *prox_portno = 0x0; /* cut off number from host name */
4326 /* now set the local port number */
4327 conn->port = strtol(prox_portno, NULL, 10);
4330 if(proxyptr[0]=='/')
4331 /* If the first character in the proxy string is a slash, fail
4332 immediately. The following code will otherwise clear the string which
4333 will lead to code running as if no proxy was set! */
4334 return CURLE_COULDNT_RESOLVE_PROXY;
4336 /* without a port number after the host name, some people seem to use
4337 a slash so we strip everything from the first slash */
4338 atsign = strchr(proxyptr, '/');
4340 *atsign = 0x0; /* cut off path part from host name */
4342 if(data->set.proxyport)
4343 /* None given in the proxy string, then get the default one if it is
4345 conn->port = data->set.proxyport;
4348 /* now, clone the cleaned proxy host name */
4349 conn->proxy.rawalloc = strdup(proxyptr);
4350 conn->proxy.name = conn->proxy.rawalloc;
4352 if(!conn->proxy.rawalloc)
4353 return CURLE_OUT_OF_MEMORY;
4359 * Extract the user and password from the authentication string
4361 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4362 struct connectdata *conn)
4364 char proxyuser[MAX_CURL_USER_LENGTH]="";
4365 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4367 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4368 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4369 MAX_CURL_USER_LENGTH);
4370 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4372 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4373 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4374 MAX_CURL_PASSWORD_LENGTH);
4375 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4378 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4379 if(!conn->proxyuser)
4380 return CURLE_OUT_OF_MEMORY;
4382 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4383 if(!conn->proxypasswd)
4384 return CURLE_OUT_OF_MEMORY;
4388 #endif /* CURL_DISABLE_PROXY */
4393 * Parse the login details (user name, password and options) from the URL and
4394 * strip them out of the host name
4396 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4399 * Outputs: (almost :- all currently undefined)
4400 * conn->bits.user_passwd - non-zero if non-default passwords exist
4401 * user - non-zero length if defined
4402 * passwd - non-zero length if defined
4403 * options - non-zero length if defined
4404 * conn->host.name - remove user name and password
4406 static CURLcode parse_url_login(struct SessionHandle *data,
4407 struct connectdata *conn,
4408 char *user, char *passwd, char *options)
4410 CURLcode result = CURLE_OK;
4412 char *passwdp = NULL;
4413 char *optionsp = NULL;
4415 /* At this point, we're hoping all the other special cases have
4416 * been taken care of, so conn->host.name is at most
4417 * [user[:password][;options]]@]hostname
4419 * We need somewhere to put the embedded details, so do that first.
4422 char *ptr = strchr(conn->host.name, '@');
4423 char *login = conn->host.name;
4425 user[0] = 0; /* to make everything well-defined */
4429 /* We will now try to extract the
4430 * possible login information in a string like:
4431 * ftp://user:password@ftp.my.site:8021/README */
4433 /* There's login information to the left of the @ */
4435 conn->host.name = ++ptr;
4437 /* So the hostname is sane. Only bother interpreting the
4438 * results if we could care. It could still be wasted
4439 * work because it might be overtaken by the programmatically
4440 * set user/passwd, but doing that first adds more cases here :-(
4443 if(data->set.use_netrc != CURL_NETRC_REQUIRED) {
4444 /* We could use the login information in the URL so extract it */
4445 result = parse_login_details(login, ptr - login - 1,
4446 &userp, &passwdp, &optionsp);
4451 /* We have a user in the URL */
4452 conn->bits.userpwd_in_url = TRUE;
4453 conn->bits.user_passwd = TRUE; /* enable user+password */
4455 /* Decode the user */
4456 newname = curl_easy_unescape(data, userp, 0, NULL);
4458 Curl_safefree(userp);
4459 Curl_safefree(passwdp);
4460 Curl_safefree(optionsp);
4461 return CURLE_OUT_OF_MEMORY;
4464 if(strlen(newname) < MAX_CURL_USER_LENGTH)
4465 strcpy(user, newname);
4471 /* We have a password in the URL so decode it */
4472 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4474 Curl_safefree(userp);
4475 Curl_safefree(passwdp);
4476 Curl_safefree(optionsp);
4477 return CURLE_OUT_OF_MEMORY;
4480 if(strlen(newpasswd) < MAX_CURL_PASSWORD_LENGTH)
4481 strcpy(passwd, newpasswd);
4487 /* We have an options list in the URL so decode it */
4488 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4490 Curl_safefree(userp);
4491 Curl_safefree(passwdp);
4492 Curl_safefree(optionsp);
4493 return CURLE_OUT_OF_MEMORY;
4496 if(strlen(newoptions) < MAX_CURL_OPTIONS_LENGTH)
4497 strcpy(options, newoptions);
4503 Curl_safefree(userp);
4504 Curl_safefree(passwdp);
4505 Curl_safefree(optionsp);
4513 * parse_login_details()
4515 * This is used to parse a login string for user name, password and options in
4516 * the following formats:
4520 * user:password;options
4522 * user;options:password
4530 * login [in] - The login string.
4531 * len [in] - The length of the login string.
4532 * userp [in/out] - The address where a pointer to newly allocated memory
4533 * holding the user will be stored upon completion.
4534 * passdwp [in/out] - The address where a pointer to newly allocated memory
4535 * holding the password will be stored upon completion.
4536 * optionsp [in/out] - The address where a pointer to newly allocated memory
4537 * holding the options will be stored upon completion.
4539 * Returns CURLE_OK on success.
4541 static CURLcode parse_login_details(const char *login, const size_t len,
4542 char **userp, char **passwdp,
4545 CURLcode result = CURLE_OK;
4549 const char *psep = NULL;
4550 const char *osep = NULL;
4555 /* Attempt to find the password separator */
4557 psep = strchr(login, ':');
4559 /* Within the constraint of the login string */
4560 if(psep >= login + len)
4564 /* Attempt to find the options separator */
4566 osep = strchr(login, ';');
4568 /* Within the constraint of the login string */
4569 if(osep >= login + len)
4573 /* Calculate the portion lengths */
4575 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4576 (osep ? (size_t)(osep - login) : len));
4578 (osep && osep > psep ? (size_t)(osep - psep) :
4579 (size_t)(login + len - psep)) - 1 : 0);
4581 (psep && psep > osep ? (size_t)(psep - osep) :
4582 (size_t)(login + len - osep)) - 1 : 0);
4584 /* Allocate the user portion buffer */
4586 ubuf = malloc(ulen + 1);
4588 result = CURLE_OUT_OF_MEMORY;
4591 /* Allocate the password portion buffer */
4592 if(!result && passwdp && plen) {
4593 pbuf = malloc(plen + 1);
4595 Curl_safefree(ubuf);
4596 result = CURLE_OUT_OF_MEMORY;
4600 /* Allocate the options portion buffer */
4601 if(!result && optionsp && olen) {
4602 obuf = malloc(olen + 1);
4604 Curl_safefree(pbuf);
4605 Curl_safefree(ubuf);
4606 result = CURLE_OUT_OF_MEMORY;
4611 /* Store the user portion if necessary */
4613 memcpy(ubuf, login, ulen);
4615 Curl_safefree(*userp);
4619 /* Store the password portion if necessary */
4621 memcpy(pbuf, psep + 1, plen);
4623 Curl_safefree(*passwdp);
4627 /* Store the options portion if necessary */
4629 memcpy(obuf, osep + 1, olen);
4631 Curl_safefree(*optionsp);
4639 /*************************************************************
4640 * Figure out the remote port number and fix it in the URL
4642 * No matter if we use a proxy or not, we have to figure out the remote
4643 * port number of various reasons.
4645 * To be able to detect port number flawlessly, we must not confuse them
4646 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4648 * The conn->host.name is currently [user:passwd@]host[:port] where host
4649 * could be a hostname, IPv4 address or IPv6 address.
4651 * The port number embedded in the URL is replaced, if necessary.
4652 *************************************************************/
4653 static CURLcode parse_remote_port(struct SessionHandle *data,
4654 struct connectdata *conn)
4659 /* Note that at this point, the IPv6 address cannot contain any scope
4660 suffix as that has already been removed in the parseurlandfillconn()
4662 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4664 (']' == endbracket)) {
4665 /* this is a RFC2732-style specified IP-address */
4666 conn->bits.ipv6_ip = TRUE;
4668 conn->host.name++; /* skip over the starting bracket */
4669 portptr = strchr(conn->host.name, ']');
4671 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4673 portptr = NULL; /* no port number available */
4678 struct in6_addr in6;
4679 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4680 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4682 failf(data, "IPv6 numerical address used in URL without brackets");
4683 return CURLE_URL_MALFORMAT;
4687 portptr = strrchr(conn->host.name, ':');
4690 if(data->set.use_port && data->state.allow_port) {
4691 /* if set, we use this and ignore the port possibly given in the URL */
4692 conn->remote_port = (unsigned short)data->set.use_port;
4694 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4695 number - since the port number is to be ignored! */
4696 if(conn->bits.httpproxy) {
4697 /* we need to create new URL with the new port number */
4701 if(conn->bits.type_set)
4702 snprintf(type, sizeof(type), ";type=%c",
4703 data->set.prefer_ascii?'A':
4704 (data->set.ftp_list_only?'D':'I'));
4707 * This synthesized URL isn't always right--suffixes like ;type=A are
4708 * stripped off. It would be better to work directly from the original
4709 * URL and simply replace the port part of it.
4711 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4712 conn->bits.ipv6_ip?"[":"", conn->host.name,
4713 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4714 data->state.slash_removed?"/":"", data->state.path,
4717 return CURLE_OUT_OF_MEMORY;
4719 if(data->change.url_alloc) {
4720 Curl_safefree(data->change.url);
4721 data->change.url_alloc = FALSE;
4724 data->change.url = url;
4725 data->change.url_alloc = TRUE;
4729 /* no CURLOPT_PORT given, extract the one from the URL */
4734 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4736 if(rest != (portptr+1) && *rest == '\0') {
4737 /* The colon really did have only digits after it,
4738 * so it is either a port number or a mistake */
4740 if(port > 0xffff) { /* Single unix standard says port numbers are
4742 failf(data, "Port number too large: %lu", port);
4743 return CURLE_URL_MALFORMAT;
4746 *portptr = '\0'; /* cut off the name there */
4747 conn->remote_port = curlx_ultous(port);
4750 /* Browser behavior adaptation. If there's a colon with no digits after,
4751 just cut off the name there which makes us ignore the colon and just
4752 use the default port. Firefox and Chrome both do that. */
4759 * Override the login details from the URL with that in the CURLOPT_USERPWD
4760 * option or a .netrc file, if applicable.
4762 static void override_login(struct SessionHandle *data,
4763 struct connectdata *conn,
4764 char *user, char *passwd, char *options)
4766 if(data->set.str[STRING_USERNAME]) {
4767 strncpy(user, data->set.str[STRING_USERNAME], MAX_CURL_USER_LENGTH);
4768 user[MAX_CURL_USER_LENGTH - 1] = '\0'; /* To be on safe side */
4771 if(data->set.str[STRING_PASSWORD]) {
4772 strncpy(passwd, data->set.str[STRING_PASSWORD], MAX_CURL_PASSWORD_LENGTH);
4773 passwd[MAX_CURL_PASSWORD_LENGTH - 1] = '\0'; /* To be on safe side */
4776 if(data->set.str[STRING_OPTIONS]) {
4777 strncpy(options, data->set.str[STRING_OPTIONS], MAX_CURL_OPTIONS_LENGTH);
4778 options[MAX_CURL_OPTIONS_LENGTH - 1] = '\0'; /* To be on safe side */
4781 conn->bits.netrc = FALSE;
4782 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4783 if(Curl_parsenetrc(conn->host.name,
4785 data->set.str[STRING_NETRC_FILE])) {
4786 infof(data, "Couldn't find host %s in the "
4787 DOT_CHAR "netrc file; using defaults\n",
4791 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4792 file, so that it is safe to use even if we followed a Location: to a
4793 different host or similar. */
4794 conn->bits.netrc = TRUE;
4796 conn->bits.user_passwd = TRUE; /* enable user+password */
4802 * Set password so it's available in the connection.
4804 static CURLcode set_login(struct connectdata *conn,
4805 const char *user, const char *passwd,
4806 const char *options)
4808 CURLcode result = CURLE_OK;
4810 /* If our protocol needs a password and we have none, use the defaults */
4811 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4812 /* Store the default user */
4813 conn->user = strdup(CURL_DEFAULT_USER);
4815 /* Store the default password */
4817 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4819 conn->passwd = NULL;
4821 /* This is the default password, so DON'T set conn->bits.user_passwd */
4824 /* Store the user, zero-length if not set */
4825 conn->user = strdup(user);
4827 /* Store the password (only if user is present), zero-length if not set */
4829 conn->passwd = strdup(passwd);
4831 conn->passwd = NULL;
4834 if(!conn->user || !conn->passwd)
4835 result = CURLE_OUT_OF_MEMORY;
4837 /* Store the options, null if not set */
4838 if(!result && options[0]) {
4839 conn->options = strdup(options);
4842 result = CURLE_OUT_OF_MEMORY;
4848 /*************************************************************
4849 * Resolve the address of the server or proxy
4850 *************************************************************/
4851 static CURLcode resolve_server(struct SessionHandle *data,
4852 struct connectdata *conn,
4855 CURLcode result=CURLE_OK;
4856 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4858 /*************************************************************
4859 * Resolve the name of the server or proxy
4860 *************************************************************/
4861 if(conn->bits.reuse)
4862 /* We're reusing the connection - no need to resolve anything, and
4863 fix_hostname() was called already in create_conn() for the re-use
4868 /* this is a fresh connect */
4870 struct Curl_dns_entry *hostaddr;
4872 /* set a pointer to the hostname we display */
4873 fix_hostname(data, conn, &conn->host);
4875 if(!conn->proxy.name || !*conn->proxy.name) {
4876 /* If not connecting via a proxy, extract the port from the URL, if it is
4877 * there, thus overriding any defaults that might have been set above. */
4878 conn->port = conn->remote_port; /* it is the same port */
4880 /* Resolve target host right on */
4881 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4882 &hostaddr, timeout_ms);
4883 if(rc == CURLRESOLV_PENDING)
4886 else if(rc == CURLRESOLV_TIMEDOUT)
4887 result = CURLE_OPERATION_TIMEDOUT;
4889 else if(!hostaddr) {
4890 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4891 result = CURLE_COULDNT_RESOLVE_HOST;
4892 /* don't return yet, we need to clean up the timeout first */
4896 /* This is a proxy that hasn't been resolved yet. */
4898 /* IDN-fix the proxy name */
4899 fix_hostname(data, conn, &conn->proxy);
4902 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4903 &hostaddr, timeout_ms);
4905 if(rc == CURLRESOLV_PENDING)
4908 else if(rc == CURLRESOLV_TIMEDOUT)
4909 result = CURLE_OPERATION_TIMEDOUT;
4911 else if(!hostaddr) {
4912 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4913 result = CURLE_COULDNT_RESOLVE_PROXY;
4914 /* don't return yet, we need to clean up the timeout first */
4917 DEBUGASSERT(conn->dns_entry == NULL);
4918 conn->dns_entry = hostaddr;
4925 * Cleanup the connection just allocated before we can move along and use the
4926 * previously existing one. All relevant data is copied over and old_conn is
4927 * ready for freeing once this function returns.
4929 static void reuse_conn(struct connectdata *old_conn,
4930 struct connectdata *conn)
4932 if(old_conn->proxy.rawalloc)
4933 free(old_conn->proxy.rawalloc);
4935 /* free the SSL config struct from this connection struct as this was
4936 allocated in vain and is targeted for destruction */
4937 Curl_free_ssl_config(&old_conn->ssl_config);
4939 conn->data = old_conn->data;
4941 /* get the user+password information from the old_conn struct since it may
4942 * be new for this request even when we re-use an existing connection */
4943 conn->bits.user_passwd = old_conn->bits.user_passwd;
4944 if(conn->bits.user_passwd) {
4945 /* use the new user name and password though */
4946 Curl_safefree(conn->user);
4947 Curl_safefree(conn->passwd);
4948 conn->user = old_conn->user;
4949 conn->passwd = old_conn->passwd;
4950 old_conn->user = NULL;
4951 old_conn->passwd = NULL;
4954 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4955 if(conn->bits.proxy_user_passwd) {
4956 /* use the new proxy user name and proxy password though */
4957 Curl_safefree(conn->proxyuser);
4958 Curl_safefree(conn->proxypasswd);
4959 conn->proxyuser = old_conn->proxyuser;
4960 conn->proxypasswd = old_conn->proxypasswd;
4961 old_conn->proxyuser = NULL;
4962 old_conn->proxypasswd = NULL;
4965 /* host can change, when doing keepalive with a proxy or if the case is
4966 different this time etc */
4967 Curl_safefree(conn->host.rawalloc);
4968 conn->host=old_conn->host;
4970 /* persist connection info in session handle */
4971 Curl_persistconninfo(conn);
4974 conn->bits.reuse = TRUE; /* yes, we're re-using here */
4976 Curl_safefree(old_conn->user);
4977 Curl_safefree(old_conn->passwd);
4978 Curl_safefree(old_conn->proxyuser);
4979 Curl_safefree(old_conn->proxypasswd);
4980 Curl_safefree(old_conn->localdev);
4982 Curl_llist_destroy(old_conn->send_pipe, NULL);
4983 Curl_llist_destroy(old_conn->recv_pipe, NULL);
4985 old_conn->send_pipe = NULL;
4986 old_conn->recv_pipe = NULL;
4988 Curl_safefree(old_conn->master_buffer);
4992 * create_conn() sets up a new connectdata struct, or re-uses an already
4993 * existing one, and resolves host name.
4995 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
4996 * response will be coming asynchronously. If *async is FALSE, the name is
4999 * @param data The sessionhandle pointer
5000 * @param in_connect is set to the next connection data pointer
5001 * @param async is set TRUE when an async DNS resolution is pending
5002 * @see Curl_setup_conn()
5004 * *NOTE* this function assigns the conn->data pointer!
5007 static CURLcode create_conn(struct SessionHandle *data,
5008 struct connectdata **in_connect,
5011 CURLcode result = CURLE_OK;
5012 struct connectdata *conn;
5013 struct connectdata *conn_temp = NULL;
5015 char user[MAX_CURL_USER_LENGTH];
5016 char passwd[MAX_CURL_PASSWORD_LENGTH];
5017 char options[MAX_CURL_OPTIONS_LENGTH];
5020 bool prot_missing = FALSE;
5021 bool no_connections_available = FALSE;
5023 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5024 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5028 /*************************************************************
5030 *************************************************************/
5032 if(!data->change.url)
5033 return CURLE_URL_MALFORMAT;
5035 /* First, split up the current URL in parts so that we can use the
5036 parts for checking against the already present connections. In order
5037 to not have to modify everything at once, we allocate a temporary
5038 connection data struct and fill in for comparison purposes. */
5039 conn = allocate_conn(data);
5042 return CURLE_OUT_OF_MEMORY;
5044 /* We must set the return variable as soon as possible, so that our
5045 parent can cleanup any possible allocs we may have done before
5049 /* This initing continues below, see the comment "Continue connectdata
5050 * initialization here" */
5052 /***********************************************************
5053 * We need to allocate memory to store the path in. We get the size of the
5054 * full URL to be sure, and we need to make it at least 256 bytes since
5055 * other parts of the code will rely on this fact
5056 ***********************************************************/
5057 #define LEAST_PATH_ALLOC 256
5058 urllen=strlen(data->change.url);
5059 if(urllen < LEAST_PATH_ALLOC)
5060 urllen=LEAST_PATH_ALLOC;
5063 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5064 * 1 - an extra terminating zero
5065 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5068 Curl_safefree(data->state.pathbuffer);
5069 data->state.path = NULL;
5071 data->state.pathbuffer = malloc(urllen+2);
5072 if(NULL == data->state.pathbuffer)
5073 return CURLE_OUT_OF_MEMORY; /* really bad error */
5074 data->state.path = data->state.pathbuffer;
5076 conn->host.rawalloc = malloc(urllen+2);
5077 if(NULL == conn->host.rawalloc) {
5078 Curl_safefree(data->state.pathbuffer);
5079 data->state.path = NULL;
5080 return CURLE_OUT_OF_MEMORY;
5083 conn->host.name = conn->host.rawalloc;
5084 conn->host.name[0] = 0;
5086 result = parseurlandfillconn(data, conn, &prot_missing, user, passwd,
5088 if(result != CURLE_OK)
5091 /*************************************************************
5092 * No protocol part in URL was used, add it!
5093 *************************************************************/
5095 /* We're guessing prefixes here and if we're told to use a proxy or if
5096 we're gonna follow a Location: later or... then we need the protocol
5097 part added so that we have a valid URL. */
5100 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5103 Curl_safefree(proxy);
5104 return CURLE_OUT_OF_MEMORY;
5107 if(data->change.url_alloc) {
5108 Curl_safefree(data->change.url);
5109 data->change.url_alloc = FALSE;
5112 data->change.url = reurl;
5113 data->change.url_alloc = TRUE; /* free this later */
5116 /*************************************************************
5117 * If the protocol can't handle url query strings, then cut
5118 * of the unhandable part
5119 *************************************************************/
5120 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5121 char *path_q_sep = strchr(conn->data->state.path, '?');
5123 /* according to rfc3986, allow the query (?foo=bar)
5124 also on protocols that can't handle it.
5126 cut the string-part after '?'
5129 /* terminate the string */
5134 #ifndef CURL_DISABLE_PROXY
5135 /*************************************************************
5136 * Extract the user and password from the authentication string
5137 *************************************************************/
5138 if(conn->bits.proxy_user_passwd) {
5139 result = parse_proxy_auth(data, conn);
5140 if(result != CURLE_OK)
5144 /*************************************************************
5145 * Detect what (if any) proxy to use
5146 *************************************************************/
5147 if(data->set.str[STRING_PROXY]) {
5148 proxy = strdup(data->set.str[STRING_PROXY]);
5149 /* if global proxy is set, this is it */
5151 failf(data, "memory shortage");
5152 return CURLE_OUT_OF_MEMORY;
5156 if(data->set.str[STRING_NOPROXY] &&
5157 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5159 free(proxy); /* proxy is in exception list */
5164 proxy = detect_proxy(conn);
5166 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5167 free(proxy); /* Don't bother with an empty proxy string or if the
5168 protocol doesn't work with network */
5172 /***********************************************************************
5173 * If this is supposed to use a proxy, we need to figure out the proxy host
5174 * name, proxy type and port number, so that we can re-use an existing
5175 * connection that may exist registered to the same proxy host.
5176 ***********************************************************************/
5178 result = parse_proxy(data, conn, proxy);
5180 free(proxy); /* parse_proxy copies the proxy string */
5185 if((conn->proxytype == CURLPROXY_HTTP) ||
5186 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5187 #ifdef CURL_DISABLE_HTTP
5188 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5189 return CURLE_UNSUPPORTED_PROTOCOL;
5191 /* force this connection's protocol to become HTTP if not already
5192 compatible - if it isn't tunneling through */
5193 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5194 !conn->bits.tunnel_proxy)
5195 conn->handler = &Curl_handler_http;
5197 conn->bits.httpproxy = TRUE;
5201 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5202 conn->bits.proxy = TRUE;
5205 /* we aren't using the proxy after all... */
5206 conn->bits.proxy = FALSE;
5207 conn->bits.httpproxy = FALSE;
5208 conn->bits.proxy_user_passwd = FALSE;
5209 conn->bits.tunnel_proxy = FALSE;
5212 #endif /* CURL_DISABLE_PROXY */
5214 /*************************************************************
5215 * Setup internals depending on protocol. Needs to be done after
5216 * we figured out what/if proxy to use.
5217 *************************************************************/
5218 result = setup_connection_internals(conn);
5219 if(result != CURLE_OK) {
5220 Curl_safefree(proxy);
5224 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5225 conn->send[FIRSTSOCKET] = Curl_send_plain;
5226 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5227 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5229 /***********************************************************************
5230 * file: is a special case in that it doesn't need a network connection
5231 ***********************************************************************/
5232 #ifndef CURL_DISABLE_FILE
5233 if(conn->handler->flags & PROTOPT_NONETWORK) {
5235 /* this is supposed to be the connect function so we better at least check
5236 that the file is present here! */
5237 DEBUGASSERT(conn->handler->connect_it);
5238 result = conn->handler->connect_it(conn, &done);
5240 /* Setup a "faked" transfer that'll do nothing */
5241 if(CURLE_OK == result) {
5243 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5245 ConnectionStore(data, conn);
5248 * Setup whatever necessary for a resumed transfer
5250 result = setup_range(data);
5252 DEBUGASSERT(conn->handler->done);
5253 /* we ignore the return code for the protocol-specific DONE */
5254 (void)conn->handler->done(conn, result, FALSE);
5258 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5259 -1, NULL); /* no upload */
5262 /* since we skip do_init() */
5263 Curl_speedinit(data);
5269 /*************************************************************
5270 * If the protocol is using SSL and HTTP proxy is used, we set
5271 * the tunnel_proxy bit.
5272 *************************************************************/
5273 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5274 conn->bits.tunnel_proxy = TRUE;
5276 /*************************************************************
5277 * Figure out the remote port number and fix it in the URL
5278 *************************************************************/
5279 result = parse_remote_port(data, conn);
5280 if(result != CURLE_OK)
5283 /* Check for overridden login details and set them accordingly */
5284 override_login(data, conn, user, passwd, options);
5285 result = set_login(conn, user, passwd, options);
5286 if(result != CURLE_OK)
5289 /* Get a cloned copy of the SSL config situation stored in the
5290 connection struct. But to get this going nicely, we must first make
5291 sure that the strings in the master copy are pointing to the correct
5292 strings in the session handle strings array!
5294 Keep in mind that the pointers in the master copy are pointing to strings
5295 that will be freed as part of the SessionHandle struct, but all cloned
5296 copies will be separately allocated.
5298 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5299 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5300 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5301 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5302 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5303 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5304 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5306 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5307 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5310 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config))
5311 return CURLE_OUT_OF_MEMORY;
5313 /*************************************************************
5314 * Check the current list of connections to see if we can
5315 * re-use an already existing one or if we have to create a
5317 *************************************************************/
5319 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5320 we only acknowledge this option if this is not a re-used connection
5321 already (which happens due to follow-location or during a HTTP
5322 authentication phase). */
5323 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5326 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5328 /* If we found a reusable connection, we may still want to
5329 open a new connection if we are pipelining. */
5330 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5331 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5333 infof(data, "Found connection %d, with requests in the pipe (%d)\n",
5334 conn_temp->connection_id, pipelen);
5336 if(conn_temp->bundle->num_connections < max_host_connections &&
5337 data->state.conn_cache->num_connections < max_total_connections) {
5338 /* We want a new connection anyway */
5341 infof(data, "We can reuse, but we want a new connection anyway\n");
5348 * We already have a connection for this, we got the former connection
5349 * in the conn_temp variable and thus we need to cleanup the one we
5350 * just allocated before we can move along and use the previously
5353 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5354 handle in a multi stack may nick it */
5355 reuse_conn(conn, conn_temp);
5356 free(conn); /* we don't need this anymore */
5360 /* set a pointer to the hostname we display */
5361 fix_hostname(data, conn, &conn->host);
5363 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5364 conn->connection_id,
5365 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5368 /* We have decided that we want a new connection. However, we may not
5369 be able to do that if we have reached the limit of how many
5370 connections we are allowed to open. */
5371 struct connectbundle *bundle;
5373 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5375 if(max_host_connections > 0 && bundle &&
5376 (bundle->num_connections >= max_host_connections)) {
5377 struct connectdata *conn_candidate;
5379 /* The bundle is full. Let's see if we can kill a connection. */
5380 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5382 if(conn_candidate) {
5383 /* Set the connection's owner correctly, then kill it */
5384 conn_candidate->data = data;
5385 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5388 no_connections_available = TRUE;
5391 if(max_total_connections > 0 &&
5392 (data->state.conn_cache->num_connections >= max_total_connections)) {
5393 struct connectdata *conn_candidate;
5395 /* The cache is full. Let's see if we can kill a connection. */
5396 conn_candidate = find_oldest_idle_connection(data);
5398 if(conn_candidate) {
5399 /* Set the connection's owner correctly, then kill it */
5400 conn_candidate->data = data;
5401 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5404 no_connections_available = TRUE;
5408 if(no_connections_available) {
5409 infof(data, "No connections available.\n");
5414 return CURLE_NO_CONNECTION_AVAILABLE;
5418 * This is a brand new connection, so let's store it in the connection
5421 ConnectionStore(data, conn);
5425 /* Mark the connection as used */
5428 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5432 * Setup whatever necessary for a resumed transfer
5434 result = setup_range(data);
5438 /* Continue connectdata initialization here. */
5441 * Inherit the proper values from the urldata struct AFTER we have arranged
5442 * the persistent connection stuff
5444 conn->fread_func = data->set.fread_func;
5445 conn->fread_in = data->set.in;
5446 conn->seek_func = data->set.seek_func;
5447 conn->seek_client = data->set.seek_client;
5449 /*************************************************************
5450 * Resolve the address of the server or proxy
5451 *************************************************************/
5452 result = resolve_server(data, conn, async);
5457 /* Curl_setup_conn() is called after the name resolve initiated in
5458 * create_conn() is all done.
5460 * Curl_setup_conn() also handles reused connections
5462 * conn->data MUST already have been setup fine (in create_conn)
5465 CURLcode Curl_setup_conn(struct connectdata *conn,
5466 bool *protocol_done)
5468 CURLcode result = CURLE_OK;
5469 struct SessionHandle *data = conn->data;
5471 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5473 if(conn->handler->flags & PROTOPT_NONETWORK) {
5474 /* nothing to setup when not using a network */
5475 *protocol_done = TRUE;
5478 *protocol_done = FALSE; /* default to not done */
5480 /* set proxy_connect_closed to false unconditionally already here since it
5481 is used strictly to provide extra information to a parent function in the
5482 case of proxy CONNECT failures and we must make sure we don't have it
5483 lingering set from a previous invoke */
5484 conn->bits.proxy_connect_closed = FALSE;
5487 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5488 * basically anything through a http proxy we can't limit this based on
5491 if(data->set.str[STRING_USERAGENT]) {
5492 Curl_safefree(conn->allocptr.uagent);
5493 conn->allocptr.uagent =
5494 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5495 if(!conn->allocptr.uagent)
5496 return CURLE_OUT_OF_MEMORY;
5499 data->req.headerbytecount = 0;
5501 #ifdef CURL_DO_LINEEND_CONV
5502 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5503 #endif /* CURL_DO_LINEEND_CONV */
5505 /* set start time here for timeout purposes in the connect procedure, it
5506 is later set again for the progress meter purpose */
5507 conn->now = Curl_tvnow();
5510 /* loop for CURL_SERVER_CLOSED_CONNECTION */
5512 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5513 /* Try to connect only if not already connected */
5514 bool connected = FALSE;
5516 result = ConnectPlease(data, conn, &connected);
5518 if(result && !conn->ip_addr) {
5519 /* transport connection failure not related with authentication */
5520 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5525 result = Curl_protocol_connect(conn, protocol_done);
5526 if(CURLE_OK == result)
5527 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5530 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5532 /* if the connection was closed by the server while exchanging
5533 authentication informations, retry with the new set
5534 authentication information */
5535 if(conn->bits.proxy_connect_closed) {
5536 /* reset the error buffer */
5537 if(data->set.errorbuffer)
5538 data->set.errorbuffer[0] = '\0';
5539 data->state.errorbuf = FALSE;
5543 if(CURLE_OK != result)
5547 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5548 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5549 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5550 *protocol_done = TRUE;
5551 Curl_verboseconnect(conn);
5552 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5554 /* Stop the loop now */
5558 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5559 set this here perhaps a second time */
5563 * This check is quite a hack. We're calling _fsetmode to fix the problem
5564 * with fwrite converting newline characters (you get mangled text files,
5565 * and corrupted binary files when you download to stdout and redirect it to
5569 if((data->set.out)->_handle == NULL) {
5570 _fsetmode(stdout, "b");
5577 CURLcode Curl_connect(struct SessionHandle *data,
5578 struct connectdata **in_connect,
5580 bool *protocol_done)
5584 *asyncp = FALSE; /* assume synchronous resolves by default */
5586 /* call the stuff that needs to be called */
5587 code = create_conn(data, in_connect, asyncp);
5589 if(CURLE_OK == code) {
5591 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5593 *protocol_done = TRUE;
5595 /* DNS resolution is done: that's either because this is a reused
5596 connection, in which case DNS was unnecessary, or because DNS
5597 really did finish already (synch resolver/fast async resolve) */
5598 code = Curl_setup_conn(*in_connect, protocol_done);
5602 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5607 if(code && *in_connect) {
5608 /* We're not allowed to return failure with memory left allocated
5609 in the connectdata struct, free those here */
5610 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5611 *in_connect = NULL; /* return a NULL */
5617 CURLcode Curl_done(struct connectdata **connp,
5618 CURLcode status, /* an error if this is called after an
5619 error was detected */
5623 struct connectdata *conn;
5624 struct SessionHandle *data;
5626 DEBUGASSERT(*connp);
5632 /* Stop if Curl_done() has already been called */
5635 Curl_getoff_all_pipelines(data, conn);
5637 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5638 !data->set.reuse_forbid &&
5640 /* Stop if pipeline is not empty and we do not have to close
5644 conn->bits.done = TRUE; /* called just now! */
5646 /* Cleanup possible redirect junk */
5647 if(data->req.newurl) {
5648 free(data->req.newurl);
5649 data->req.newurl = NULL;
5651 if(data->req.location) {
5652 free(data->req.location);
5653 data->req.location = NULL;
5656 Curl_resolver_cancel(conn);
5658 if(conn->dns_entry) {
5659 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5660 conn->dns_entry = NULL;
5663 if(status == CURLE_ABORTED_BY_CALLBACK)
5664 /* When we're aborted due to a callback return code it basically have to
5665 be counted as premature as there is trouble ahead if we don't. We have
5666 many callbacks and protocols work differently, we could potentially do
5667 this more fine-grained in the future. */
5670 /* this calls the protocol-specific function pointer previously set */
5671 if(conn->handler->done)
5672 result = conn->handler->done(conn, status, premature);
5676 if(Curl_pgrsDone(conn) && !result)
5677 result = CURLE_ABORTED_BY_CALLBACK;
5679 /* if the transfer was completed in a paused state there can be buffered
5680 data left to write and then kill */
5681 if(data->state.tempwrite) {
5682 free(data->state.tempwrite);
5683 data->state.tempwrite = NULL;
5686 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5687 forced us to close this no matter what we think.
5689 if conn->bits.close is TRUE, it means that the connection should be
5690 closed in spite of all our efforts to be nice, due to protocol
5691 restrictions in our or the server's end
5693 if premature is TRUE, it means this connection was said to be DONE before
5694 the entire request operation is complete and thus we can't know in what
5695 state it is for re-using, so we're forced to close it. In a perfect world
5696 we can add code that keep track of if we really must close it here or not,
5697 but currently we have no such detail knowledge.
5699 if(data->set.reuse_forbid || conn->bits.close || premature) {
5700 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5702 /* If we had an error already, make sure we return that one. But
5703 if we got a new error, return that. */
5708 /* the connection is no longer in use */
5709 if(ConnectionDone(data, conn)) {
5710 /* remember the most recently used connection */
5711 data->state.lastconnect = conn;
5713 infof(data, "Connection #%ld to host %s left intact\n",
5714 conn->connection_id,
5715 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5718 data->state.lastconnect = NULL;
5721 *connp = NULL; /* to make the caller of this function better detect that
5722 this was either closed or handed over to the connection
5723 cache here, and therefore cannot be used from this point on
5730 * do_init() inits the readwrite session. This is inited each time (in the DO
5731 * function before the protocol-specific DO functions are invoked) for a
5732 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5733 * nothing in here depends on stuff that are setup dynamically for the
5737 static CURLcode do_init(struct connectdata *conn)
5739 struct SessionHandle *data = conn->data;
5740 struct SingleRequest *k = &data->req;
5742 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5743 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5744 data->state.expect100header = FALSE;
5746 if(data->set.opt_no_body)
5747 /* in HTTP lingo, no body means using the HEAD request... */
5748 data->set.httpreq = HTTPREQ_HEAD;
5749 else if(HTTPREQ_HEAD == data->set.httpreq)
5750 /* ... but if unset there really is no perfect method that is the
5751 "opposite" of HEAD but in reality most people probably think GET
5752 then. The important thing is that we can't let it remain HEAD if the
5753 opt_no_body is set FALSE since then we'll behave wrong when getting
5755 data->set.httpreq = HTTPREQ_GET;
5757 /* NB: the content encoding software depends on this initialization */
5758 Curl_easy_initHandleData(data);
5760 k->start = Curl_tvnow(); /* start time */
5761 k->now = k->start; /* current time is now */
5762 k->header = TRUE; /* assume header */
5766 k->buf = data->state.buffer;
5767 k->uploadbuf = data->state.uploadbuffer;
5768 k->hbufp = data->state.headerbuff;
5769 k->ignorebody=FALSE;
5771 Curl_speedinit(data);
5773 Curl_pgrsSetUploadCounter(data, 0);
5774 Curl_pgrsSetDownloadCounter(data, 0);
5780 * do_complete is called when the DO actions are complete.
5782 * We init chunking and trailer bits to their default values here immediately
5783 * before receiving any header data for the current request in the pipeline.
5785 static void do_complete(struct connectdata *conn)
5787 conn->data->req.chunk=FALSE;
5788 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5789 conn->sockfd:conn->writesockfd)+1;
5790 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5793 CURLcode Curl_do(struct connectdata **connp, bool *done)
5795 CURLcode result=CURLE_OK;
5796 struct connectdata *conn = *connp;
5797 struct SessionHandle *data = conn->data;
5799 if(conn->handler->do_it) {
5800 /* generic protocol-specific function pointer set in curl_connect() */
5801 result = conn->handler->do_it(conn, done);
5803 /* This was formerly done in transfer.c, but we better do it here */
5804 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5806 * If the connection is using an easy handle, call reconnect
5807 * to re-establish the connection. Otherwise, let the multi logic
5808 * figure out how to re-establish the connection.
5811 result = Curl_reconnect_request(connp);
5813 if(result == CURLE_OK) {
5814 /* ... finally back to actually retry the DO phase */
5815 conn = *connp; /* re-assign conn since Curl_reconnect_request
5816 creates a new connection */
5817 result = conn->handler->do_it(conn, done);
5824 if((result == CURLE_OK) && *done)
5825 /* do_complete must be called after the protocol-specific DO function */
5832 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5833 * second stage DO state which (wrongly) was introduced to support FTP's
5834 * second connection.
5836 * TODO: A future libcurl should be able to work away this state.
5840 CURLcode Curl_do_more(struct connectdata *conn, bool *completed)
5842 CURLcode result=CURLE_OK;
5846 if(conn->handler->do_more)
5847 result = conn->handler->do_more(conn, completed);
5849 if(!result && *completed)
5850 /* do_complete must be called after the protocol-specific DO function */
5856 /* Called on connect, and if there's already a protocol-specific struct
5857 allocated for a different connection, this frees it that it can be setup
5858 properly later on. */
5859 void Curl_reset_reqproto(struct connectdata *conn)
5861 struct SessionHandle *data = conn->data;
5862 if(data->state.proto.generic && data->state.current_conn != conn) {
5863 free(data->state.proto.generic);
5864 data->state.proto.generic = NULL;
5866 data->state.current_conn = conn;