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 %ld\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",
2879 needle->host.name, (void *)bundle);
2881 /* We can't pipe if we don't know anything about the server */
2882 if(canPipeline && !bundle->server_supports_pipelining) {
2883 infof(data, "Server doesn't support pipelining\n");
2884 canPipeline = FALSE;
2887 curr = bundle->conn_list->head;
2890 bool credentialsMatch = FALSE;
2894 * Note that if we use a HTTP proxy, we check connections to that
2895 * proxy and not to the actual remote server.
2900 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2902 if(!pipeLen && !check->inuse) {
2903 /* The check for a dead socket makes sense only if there are no
2904 handles in pipeline and the connection isn't already marked in
2907 if(check->handler->protocol & CURLPROTO_RTSP)
2908 /* RTSP is a special case due to RTP interleaving */
2909 dead = Curl_rtsp_connisdead(check);
2911 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2915 infof(data, "Connection %ld seems to be dead!\n",
2916 check->connection_id);
2918 /* disconnect resources */
2919 Curl_disconnect(check, /* dead_connection */ TRUE);
2925 /* Make sure the pipe has only GET requests */
2926 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2927 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2929 if(!IsPipeliningPossible(sh, check))
2933 if(!IsPipeliningPossible(rh, check))
2939 /* can only happen within multi handles, and means that another easy
2940 handle is using this connection */
2944 if(Curl_resolver_asynch()) {
2945 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2946 completed yet and until then we don't re-use this connection */
2947 if(!check->ip_addr_str[0]) {
2949 "Connection #%ld is still name resolving, can't reuse\n",
2950 check->connection_id);
2955 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2956 check->bits.close) {
2957 /* Don't pick a connection that hasn't connected yet or that is going
2959 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2960 check->connection_id);
2962 if(check->recv_pipe->size > 0) {
2964 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2965 check->connection_id);
2972 if((needle->handler->flags&PROTOPT_SSL) !=
2973 (check->handler->flags&PROTOPT_SSL))
2974 /* don't do mixed SSL and non-SSL connections */
2975 if(!(needle->handler->protocol & check->handler->protocol))
2976 /* except protocols that have been upgraded via TLS */
2979 if(needle->handler->flags&PROTOPT_SSL) {
2980 if((data->set.ssl.verifypeer != check->verifypeer) ||
2981 (data->set.ssl.verifyhost != check->verifyhost))
2985 if(needle->bits.proxy != check->bits.proxy)
2986 /* don't do mixed proxy and non-proxy connections */
2989 if(!canPipeline && check->inuse)
2990 /* this request can't be pipelined but the checked connection is
2991 already in use so we skip it */
2994 if(needle->localdev || needle->localport) {
2995 /* If we are bound to a specific local end (IP+port), we must not
2996 re-use a random other one, although if we didn't ask for a
2997 particular one we can reuse one that was bound.
2999 This comparison is a bit rough and too strict. Since the input
3000 parameters can be specified in numerous ways and still end up the
3001 same it would take a lot of processing to make it really accurate.
3002 Instead, this matching will assume that re-uses of bound connections
3003 will most likely also re-use the exact same binding parameters and
3004 missing out a few edge cases shouldn't hurt anyone very much.
3006 if((check->localport != needle->localport) ||
3007 (check->localportrange != needle->localportrange) ||
3009 !needle->localdev ||
3010 strcmp(check->localdev, needle->localdev))
3014 if((needle->handler->protocol & CURLPROTO_FTP) ||
3015 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3016 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3017 and password as well */
3018 if(!strequal(needle->user, check->user) ||
3019 !strequal(needle->passwd, check->passwd)) {
3020 /* one of them was different */
3023 credentialsMatch = TRUE;
3026 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3027 (needle->bits.httpproxy && check->bits.httpproxy &&
3028 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3029 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3030 (needle->port == check->port))) {
3031 /* The requested connection does not use a HTTP proxy or it uses SSL or
3032 it is a non-SSL protocol tunneled over the same http proxy name and
3033 port number or it is a non-SSL protocol which is allowed to be
3036 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3037 needle->handler->protocol & check->handler->protocol) &&
3038 Curl_raw_equal(needle->host.name, check->host.name) &&
3039 needle->remote_port == check->remote_port) {
3040 if(needle->handler->flags & PROTOPT_SSL) {
3041 /* This is a SSL connection so verify that we're using the same
3042 SSL options as well */
3043 if(!Curl_ssl_config_matches(&needle->ssl_config,
3044 &check->ssl_config)) {
3046 "Connection #%ld has different SSL parameters, "
3048 check->connection_id));
3051 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3053 "Connection #%ld has not started SSL connect, "
3055 check->connection_id));
3062 else { /* The requested needle connection is using a proxy,
3063 is the checked one using the same host, port and type? */
3064 if(check->bits.proxy &&
3065 (needle->proxytype == check->proxytype) &&
3066 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3067 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3068 needle->port == check->port) {
3069 /* This is the same proxy connection, use it! */
3075 /* If we are looking for an NTLM connection, check if this is already
3076 authenticating with the right credentials. If not, keep looking so
3077 that we can reuse NTLM connections if possible. (Especially we
3078 must not reuse the same connection if partway through
3081 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3084 /* We must use this connection, no other */
3085 *force_reuse = TRUE;
3093 /* We can pipeline if we want to. Let's continue looking for
3094 the optimal connection to use, i.e the shortest pipe that is not
3098 /* We have the optimal connection. Let's stop looking. */
3103 /* We can't use the connection if the pipe is full */
3104 if(pipeLen >= max_pipe_len)
3107 /* We can't use the connection if the pipe is penalized */
3108 if(Curl_pipeline_penalized(data, check))
3111 if(pipeLen < best_pipe_len) {
3112 /* This connection has a shorter pipe so far. We'll pick this
3113 and continue searching */
3115 best_pipe_len = pipeLen;
3120 /* We have found a connection. Let's stop searching. */
3130 return TRUE; /* yes, we found one to use! */
3133 return FALSE; /* no matching connecting exists */
3136 /* Mark the connection as 'idle', or close it if the cache is full.
3137 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3139 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3141 /* data->multi->maxconnects can be negative, deal with it. */
3142 size_t maxconnects =
3143 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3144 struct connectdata *conn_candidate = NULL;
3146 /* Mark the current connection as 'unused' */
3147 conn->inuse = FALSE;
3149 if(maxconnects > 0 &&
3150 data->state.conn_cache->num_connections > maxconnects) {
3151 infof(data, "Connection cache is full, closing the oldest one.\n");
3153 conn_candidate = find_oldest_idle_connection(data);
3155 if(conn_candidate) {
3156 /* Set the connection's owner correctly */
3157 conn_candidate->data = data;
3159 /* the winner gets the honour of being disconnected */
3160 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3164 return (conn_candidate == conn) ? FALSE : TRUE;
3168 * The given input connection struct pointer is to be stored in the connection
3169 * cache. If the cache is already full, least interesting existing connection
3170 * (if any) gets closed.
3172 * The given connection should be unique. That must've been checked prior to
3175 static CURLcode ConnectionStore(struct SessionHandle *data,
3176 struct connectdata *conn)
3178 static int connection_id_counter = 0;
3182 /* Assign a number to the connection for easier tracking in the log
3184 conn->connection_id = connection_id_counter++;
3186 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3187 if(result != CURLE_OK)
3188 conn->connection_id = -1;
3193 /* after a TCP connection to the proxy has been verified, this function does
3194 the next magic step.
3196 Note: this function's sub-functions call failf()
3199 CURLcode Curl_connected_proxy(struct connectdata *conn)
3201 if(!conn->bits.proxy)
3204 switch(conn->proxytype) {
3205 #ifndef CURL_DISABLE_PROXY
3206 case CURLPROXY_SOCKS5:
3207 case CURLPROXY_SOCKS5_HOSTNAME:
3208 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3209 conn->host.name, conn->remote_port,
3212 case CURLPROXY_SOCKS4:
3213 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3214 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3216 case CURLPROXY_SOCKS4A:
3217 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3218 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3220 #endif /* CURL_DISABLE_PROXY */
3221 case CURLPROXY_HTTP:
3222 case CURLPROXY_HTTP_1_0:
3223 /* do nothing here. handled later. */
3227 } /* switch proxytype */
3232 static CURLcode ConnectPlease(struct SessionHandle *data,
3233 struct connectdata *conn,
3237 Curl_addrinfo *addr;
3238 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3239 char *hostname = conn->bits.proxy?conn->proxy.name:conn->host.name;
3241 infof(data, "About to connect() to %s%s port %ld (#%ld)\n",
3242 conn->bits.proxy?"proxy ":"",
3243 hostname, conn->port, conn->connection_id);
3248 /*************************************************************
3249 * Connect to server/proxy
3250 *************************************************************/
3251 result= Curl_connecthost(conn,
3253 &conn->sock[FIRSTSOCKET],
3256 if(CURLE_OK == result) {
3257 /* All is cool, we store the current information */
3258 conn->ip_addr = addr;
3261 result = Curl_connected_proxy(conn);
3263 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
3264 Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
3270 *connected = FALSE; /* mark it as not connected */
3276 * verboseconnect() displays verbose information after a connect
3278 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3279 void Curl_verboseconnect(struct connectdata *conn)
3281 if(conn->data->set.verbose)
3282 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3283 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3284 conn->ip_addr_str, conn->port, conn->connection_id);
3288 int Curl_protocol_getsock(struct connectdata *conn,
3289 curl_socket_t *socks,
3292 if(conn->handler->proto_getsock)
3293 return conn->handler->proto_getsock(conn, socks, numsocks);
3294 return GETSOCK_BLANK;
3297 int Curl_doing_getsock(struct connectdata *conn,
3298 curl_socket_t *socks,
3301 if(conn && conn->handler->doing_getsock)
3302 return conn->handler->doing_getsock(conn, socks, numsocks);
3303 return GETSOCK_BLANK;
3307 * We are doing protocol-specific connecting and this is being called over and
3308 * over from the multi interface until the connection phase is done on
3312 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3315 CURLcode result=CURLE_OK;
3317 if(conn && conn->handler->connecting) {
3319 result = conn->handler->connecting(conn, done);
3328 * We are DOING this is being called over and over from the multi interface
3329 * until the DOING phase is done on protocol layer.
3332 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3334 CURLcode result=CURLE_OK;
3336 if(conn && conn->handler->doing) {
3338 result = conn->handler->doing(conn, done);
3347 * We have discovered that the TCP connection has been successful, we can now
3348 * proceed with some action.
3351 CURLcode Curl_protocol_connect(struct connectdata *conn,
3352 bool *protocol_done)
3354 CURLcode result=CURLE_OK;
3356 *protocol_done = FALSE;
3358 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3359 /* We already are connected, get back. This may happen when the connect
3360 worked fine in the first call, like when we connect to a local server
3361 or proxy. Note that we don't know if the protocol is actually done.
3363 Unless this protocol doesn't have any protocol-connect callback, as
3364 then we know we're done. */
3365 if(!conn->handler->connecting)
3366 *protocol_done = TRUE;
3371 if(!conn->bits.protoconnstart) {
3373 result = Curl_proxy_connect(conn);
3377 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3378 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3379 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3380 before proceeding further. Return CURLE_OK so we'll be called again */
3383 if(conn->handler->connect_it) {
3384 /* is there a protocol-specific connect() procedure? */
3386 /* Call the protocol-specific connect function */
3387 result = conn->handler->connect_it(conn, protocol_done);
3390 *protocol_done = TRUE;
3392 /* it has started, possibly even completed but that knowledge isn't stored
3395 conn->bits.protoconnstart = TRUE;
3398 return result; /* pass back status */
3402 * Helpers for IDNA convertions.
3404 static bool is_ASCII_name(const char *hostname)
3406 const unsigned char *ch = (const unsigned char*)hostname;
3417 * Check if characters in hostname is allowed in Top Level Domain.
3419 static bool tld_check_name(struct SessionHandle *data,
3420 const char *ace_hostname)
3423 char *uc_name = NULL;
3425 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3426 const char *tld_errmsg = "<no msg>";
3431 /* Convert (and downcase) ACE-name back into locale's character set */
3432 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3433 if(rc != IDNA_SUCCESS)
3436 rc = tld_check_lz(uc_name, &err_pos, NULL);
3437 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3438 #ifdef HAVE_TLD_STRERROR
3439 if(rc != TLD_SUCCESS)
3440 tld_errmsg = tld_strerror((Tld_rc)rc);
3442 if(rc == TLD_INVALID)
3443 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3444 tld_errmsg, err_pos, uc_name[err_pos],
3445 uc_name[err_pos] & 255);
3446 else if(rc != TLD_SUCCESS)
3447 infof(data, "WARNING: TLD check for %s failed; %s\n",
3448 uc_name, tld_errmsg);
3449 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3452 if(rc != TLD_SUCCESS)
3460 * Perform any necessary IDN conversion of hostname
3462 static void fix_hostname(struct SessionHandle *data,
3463 struct connectdata *conn, struct hostname *host)
3468 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3472 /* set the name we use to display the host name */
3473 host->dispname = host->name;
3474 if(!is_ASCII_name(host->name)) {
3476 /*************************************************************
3477 * Check name for non-ASCII and convert hostname to ACE form.
3478 *************************************************************/
3479 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3480 char *ace_hostname = NULL;
3481 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3482 infof (data, "Input domain encoded as `%s'\n",
3483 stringprep_locale_charset ());
3484 if(rc != IDNA_SUCCESS)
3485 infof(data, "Failed to convert %s to ACE; %s\n",
3486 host->name, Curl_idn_strerror(conn,rc));
3488 /* tld_check_name() displays a warning if the host name contains
3489 "illegal" characters for this TLD */
3490 (void)tld_check_name(data, ace_hostname);
3492 host->encalloc = ace_hostname;
3493 /* change the name pointer to point to the encoded hostname */
3494 host->name = host->encalloc;
3497 #elif defined(USE_WIN32_IDN)
3498 /*************************************************************
3499 * Check name for non-ASCII and convert hostname to ACE form.
3500 *************************************************************/
3501 char *ace_hostname = NULL;
3502 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3504 infof(data, "Failed to convert %s to ACE;\n",
3507 host->encalloc = ace_hostname;
3508 /* change the name pointer to point to the encoded hostname */
3509 host->name = host->encalloc;
3512 infof(data, "IDN support not present, can't parse Unicode domains\n");
3517 static void llist_dtor(void *user, void *element)
3525 * Allocate and initialize a new connectdata object.
3527 static struct connectdata *allocate_conn(struct SessionHandle *data)
3529 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3533 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3534 already from start to avoid NULL
3535 situations and checks */
3537 /* and we setup a few fields in case we end up actually using this struct */
3539 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3540 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3541 conn->connection_id = -1; /* no ID */
3542 conn->port = -1; /* unknown at this point */
3544 /* Default protocol-independent behavior doesn't support persistent
3545 connections, so we set this to force-close. Protocols that support
3546 this need to set this to FALSE in their "curl_do" functions. */
3547 conn->bits.close = TRUE;
3549 /* Store creation time to help future close decision making */
3550 conn->created = Curl_tvnow();
3552 conn->data = data; /* Setup the association between this connection
3553 and the SessionHandle */
3555 conn->proxytype = data->set.proxytype; /* type */
3557 #ifdef CURL_DISABLE_PROXY
3559 conn->bits.proxy = FALSE;
3560 conn->bits.httpproxy = FALSE;
3561 conn->bits.proxy_user_passwd = FALSE;
3562 conn->bits.tunnel_proxy = FALSE;
3564 #else /* CURL_DISABLE_PROXY */
3566 /* note that these two proxy bits are now just on what looks to be
3567 requested, they may be altered down the road */
3568 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3569 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3570 conn->bits.httpproxy = (conn->bits.proxy &&
3571 (conn->proxytype == CURLPROXY_HTTP ||
3572 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3573 conn->bits.proxy_user_passwd =
3574 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3575 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3577 #endif /* CURL_DISABLE_PROXY */
3579 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3580 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3581 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3583 conn->verifypeer = data->set.ssl.verifypeer;
3584 conn->verifyhost = data->set.ssl.verifyhost;
3586 conn->ip_version = data->set.ipver;
3588 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3589 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3590 conn->ntlm_auth_hlpr_pid = 0;
3591 conn->challenge_header = NULL;
3592 conn->response_header = NULL;
3595 if(Curl_multi_pipeline_enabled(data->multi) &&
3596 !conn->master_buffer) {
3597 /* Allocate master_buffer to be used for pipelining */
3598 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3599 if(!conn->master_buffer)
3603 /* Initialize the pipeline lists */
3604 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3605 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3606 if(!conn->send_pipe || !conn->recv_pipe)
3609 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
3610 conn->data_prot = PROT_CLEAR;
3613 /* Store the local bind parameters that will be used for this connection */
3614 if(data->set.str[STRING_DEVICE]) {
3615 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3619 conn->localportrange = data->set.localportrange;
3620 conn->localport = data->set.localport;
3622 /* the close socket stuff needs to be copied to the connection struct as
3623 it may live on without (this specific) SessionHandle */
3624 conn->fclosesocket = data->set.fclosesocket;
3625 conn->closesocket_client = data->set.closesocket_client;
3630 Curl_llist_destroy(conn->send_pipe, NULL);
3631 Curl_llist_destroy(conn->recv_pipe, NULL);
3633 conn->send_pipe = NULL;
3634 conn->recv_pipe = NULL;
3636 Curl_safefree(conn->master_buffer);
3637 Curl_safefree(conn->localdev);
3638 Curl_safefree(conn);
3642 static CURLcode findprotocol(struct SessionHandle *data,
3643 struct connectdata *conn,
3644 const char *protostr)
3646 const struct Curl_handler * const *pp;
3647 const struct Curl_handler *p;
3649 /* Scan protocol handler table and match against 'protostr' to set a few
3650 variables based on the URL. Now that the handler may be changed later
3651 when the protocol specific setup function is called. */
3652 for(pp = protocols; (p = *pp) != NULL; pp++) {
3653 if(Curl_raw_equal(p->scheme, protostr)) {
3654 /* Protocol found in table. Check if allowed */
3655 if(!(data->set.allowed_protocols & p->protocol))
3659 /* it is allowed for "normal" request, now do an extra check if this is
3660 the result of a redirect */
3661 if(data->state.this_is_a_follow &&
3662 !(data->set.redir_protocols & p->protocol))
3666 /* Perform setup complement if some. */
3667 conn->handler = conn->given = p;
3669 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3675 /* The protocol was not found in the table, but we don't have to assign it
3676 to anything since it is already assigned to a dummy-struct in the
3677 create_conn() function when the connectdata struct is allocated. */
3678 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3681 return CURLE_UNSUPPORTED_PROTOCOL;
3685 * Parse URL and fill in the relevant members of the connection struct.
3687 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3688 struct connectdata *conn,
3690 char *user, char *passwd, char *options)
3694 char *path = data->state.path;
3700 bool rebuild_url = FALSE;
3702 *prot_missing = FALSE;
3704 /*************************************************************
3707 * We need to parse the url even when using the proxy, because we will need
3708 * the hostname and port in case we are trying to SSL connect through the
3709 * proxy -- and we don't know if we will need to use SSL until we parse the
3711 ************************************************************/
3712 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3714 Curl_raw_equal(protobuf, "file")) {
3715 if(path[0] == '/' && path[1] == '/') {
3716 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3717 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3718 * file://localhost/<path> is similar to how other schemes treat missing
3719 * hostnames. See RFC 1808. */
3721 /* This cannot be done with strcpy() in a portable manner, since the
3722 memory areas overlap! */
3723 memmove(path, path + 2, strlen(path + 2)+1);
3726 * we deal with file://<host>/<path> differently since it supports no
3727 * hostname other than "localhost" and "127.0.0.1", which is unique among
3728 * the URL protocols specified in RFC 1738
3730 if(path[0] != '/') {
3731 /* the URL included a host name, we ignore host names in file:// URLs
3732 as the standards don't define what to do with them */
3733 char *ptr=strchr(path, '/');
3735 /* there was a slash present
3737 RFC1738 (section 3.1, page 5) says:
3739 The rest of the locator consists of data specific to the scheme,
3740 and is known as the "url-path". It supplies the details of how the
3741 specified resource can be accessed. Note that the "/" between the
3742 host (or port) and the url-path is NOT part of the url-path.
3744 As most agents use file://localhost/foo to get '/foo' although the
3745 slash preceding foo is a separator and not a slash for the path,
3746 a URL as file://localhost//foo must be valid as well, to refer to
3747 the same file with an absolute path.
3750 if(ptr[1] && ('/' == ptr[1]))
3751 /* if there was two slashes, we skip the first one as that is then
3752 used truly as a separator */
3755 /* This cannot be made with strcpy, as the memory chunks overlap! */
3756 memmove(path, ptr, strlen(ptr)+1);
3760 protop = "file"; /* protocol string */
3766 if(2 > sscanf(data->change.url,
3767 "%15[^\n:]://%[^\n/?]%[^\n]",
3769 conn->host.name, path)) {
3772 * The URL was badly formatted, let's try the browser-style _without_
3773 * protocol specified like 'http://'.
3775 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3778 * We couldn't even get this format.
3779 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3780 * assigned, but the return value is EOF!
3782 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3783 if(!(rc == -1 && *conn->host.name))
3786 failf(data, "<url> malformed");
3787 return CURLE_URL_MALFORMAT;
3792 * Since there was no protocol part specified, we guess what protocol it
3793 * is based on the first letters of the server name.
3796 /* Note: if you add a new protocol, please update the list in
3797 * lib/version.c too! */
3799 if(checkprefix("FTP.", conn->host.name))
3801 else if(checkprefix("DICT.", conn->host.name))
3803 else if(checkprefix("LDAP.", conn->host.name))
3805 else if(checkprefix("IMAP.", conn->host.name))
3807 else if(checkprefix("SMTP.", conn->host.name))
3809 else if(checkprefix("POP3.", conn->host.name))
3815 *prot_missing = TRUE; /* not given in URL */
3821 /* We search for '?' in the host name (but only on the right side of a
3822 * @-letter to allow ?-letters in username and password) to handle things
3823 * like http://example.com?param= (notice the missing '/').
3825 at = strchr(conn->host.name, '@');
3827 query = strchr(at+1, '?');
3829 query = strchr(conn->host.name, '?');
3832 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3833 a slash after the '?', that is where the path currently begins and the
3834 '?string' is still part of the host name.
3836 We must move the trailing part from the host name and put it first in
3837 the path. And have it all prefixed with a slash.
3840 size_t hostlen = strlen(query);
3841 size_t pathlen = strlen(path);
3843 /* move the existing path plus the zero byte forward, to make room for
3844 the host-name part */
3845 memmove(path+hostlen+1, path, pathlen+1);
3847 /* now copy the trailing host part in front of the existing path */
3848 memcpy(path+1, query, hostlen);
3850 path[0]='/'; /* prepend the missing slash */
3853 *query=0; /* now cut off the hostname at the ? */
3856 /* if there's no path set, use a single slash */
3861 /* If the URL is malformatted (missing a '/' after hostname before path) we
3862 * insert a slash here. The only letter except '/' we accept to start a path
3865 if(path[0] == '?') {
3866 /* We need this function to deal with overlapping memory areas. We know
3867 that the memory area 'path' points to is 'urllen' bytes big and that
3868 is bigger than the path. Use +1 to move the zero byte too. */
3869 memmove(&path[1], path, strlen(path)+1);
3874 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3875 char *newp = Curl_dedotdotify(path);
3877 return CURLE_OUT_OF_MEMORY;
3879 if(strcmp(newp, path)) {
3881 free(data->state.pathbuffer);
3882 data->state.pathbuffer = newp;
3883 data->state.path = newp;
3891 * "rebuild_url" means that one or more URL components have been modified so
3892 * we need to generate an updated full version. We need the corrected URL
3893 * when communicating over HTTP proxy and we don't know at this point if
3894 * we're using a proxy or not.
3899 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3901 size_t urllen = strlen(data->change.url); /* original URL length */
3903 size_t prefixlen = strlen(conn->host.name);
3906 prefixlen += strlen(protop) + strlen("://");
3908 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3910 return CURLE_OUT_OF_MEMORY;
3912 /* copy the prefix */
3913 memcpy(reurl, data->change.url, prefixlen);
3915 /* append the trailing piece + zerobyte */
3916 memcpy(&reurl[prefixlen], path, plen + 1);
3918 /* possible free the old one */
3919 if(data->change.url_alloc) {
3920 Curl_safefree(data->change.url);
3921 data->change.url_alloc = FALSE;
3924 infof(data, "Rebuilt URL to: %s\n", reurl);
3926 data->change.url = reurl;
3927 data->change.url_alloc = TRUE; /* free this later */
3931 * Parse the login details from the URL and strip them out of
3934 result = parse_url_login(data, conn, user, passwd, options);
3935 if(result != CURLE_OK)
3938 if(conn->host.name[0] == '[') {
3939 /* This looks like an IPv6 address literal. See if there is an address
3941 char *percent = strstr (conn->host.name, "%25");
3944 unsigned long scope = strtoul (percent + 3, &endp, 10);
3946 /* The address scope was well formed. Knock it out of the
3948 memmove(percent, endp, strlen(endp)+1);
3949 if(!data->state.this_is_a_follow)
3950 /* Don't honour a scope given in a Location: header */
3951 conn->scope = (unsigned int)scope;
3954 infof(data, "Invalid IPv6 address format\n");
3959 /* Override any scope that was set above. */
3960 conn->scope = data->set.scope;
3962 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3963 last part of the URI. We are looking for the first '#' so that we deal
3964 gracefully with non conformant URI such as http://example.com#foo#bar. */
3965 fragment = strchr(path, '#');
3969 /* we know the path part ended with a fragment, so we know the full URL
3970 string does too and we need to cut it off from there so it isn't used
3972 fragment = strchr(data->change.url, '#');
3978 * So if the URL was A://B/C#D,
3980 * conn->host.name is B
3981 * data->state.path is /C
3984 return findprotocol(data, conn, protop);
3988 * If we're doing a resumed transfer, we need to setup our stuff
3991 static CURLcode setup_range(struct SessionHandle *data)
3993 struct UrlState *s = &data->state;
3994 s->resume_from = data->set.set_resume_from;
3995 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3996 if(s->rangestringalloc)
4000 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
4002 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4004 s->rangestringalloc = (s->range)?TRUE:FALSE;
4007 return CURLE_OUT_OF_MEMORY;
4009 /* tell ourselves to fetch this range */
4010 s->use_range = TRUE; /* enable range download */
4013 s->use_range = FALSE; /* disable range download */
4019 /***************************************************************
4020 * Setup connection internals specific to the requested protocol.
4021 * This MUST get called after proxy magic has been figured out.
4022 ***************************************************************/
4023 static CURLcode setup_connection_internals(struct connectdata *conn)
4025 const struct Curl_handler * p;
4028 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4030 /* Scan protocol handler table. */
4032 /* Perform setup complement if some. */
4035 if(p->setup_connection) {
4036 result = (*p->setup_connection)(conn);
4038 if(result != CURLE_OK)
4041 p = conn->handler; /* May have changed. */
4045 /* we check for -1 here since if proxy was detected already, this
4046 was very likely already set to the proxy port */
4047 conn->port = p->defport;
4048 conn->remote_port = (unsigned short)conn->given->defport;
4053 #ifndef CURL_DISABLE_PROXY
4054 /****************************************************************
4055 * Checks if the host is in the noproxy list. returns true if it matches
4056 * and therefore the proxy should NOT be used.
4057 ****************************************************************/
4058 static bool check_noproxy(const char* name, const char* no_proxy)
4060 /* no_proxy=domain1.dom,host.domain2.dom
4061 * (a comma-separated list of hosts which should
4062 * not be proxied, or an asterisk to override
4063 * all proxy variables)
4067 const char* separator = ", ";
4068 size_t no_proxy_len;
4072 if(no_proxy && no_proxy[0]) {
4073 if(Curl_raw_equal("*", no_proxy)) {
4077 /* NO_PROXY was specified and it wasn't just an asterisk */
4079 no_proxy_len = strlen(no_proxy);
4080 endptr = strchr(name, ':');
4082 namelen = endptr - name;
4084 namelen = strlen(name);
4086 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4087 while(tok_start < no_proxy_len &&
4088 strchr(separator, no_proxy[tok_start]) != NULL) {
4089 /* Look for the beginning of the token. */
4093 if(tok_start == no_proxy_len)
4094 break; /* It was all trailing separator chars, no more tokens. */
4096 for(tok_end = tok_start; tok_end < no_proxy_len &&
4097 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4098 /* Look for the end of the token. */
4101 /* To match previous behaviour, where it was necessary to specify
4102 * ".local.com" to prevent matching "notlocal.com", we will leave
4105 if(no_proxy[tok_start] == '.')
4108 if((tok_end - tok_start) <= namelen) {
4109 /* Match the last part of the name to the domain we are checking. */
4110 const char *checkn = name + namelen - (tok_end - tok_start);
4111 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4112 tok_end - tok_start)) {
4113 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4114 /* We either have an exact match, or the previous character is a .
4115 * so it is within the same domain, so no proxy for this host.
4120 } /* if((tok_end - tok_start) <= namelen) */
4121 } /* for(tok_start = 0; tok_start < no_proxy_len;
4122 tok_start = tok_end + 1) */
4123 } /* NO_PROXY was specified and it wasn't just an asterisk */
4128 /****************************************************************
4129 * Detect what (if any) proxy to use. Remember that this selects a host
4130 * name and is not limited to HTTP proxies only.
4131 * The returned pointer must be freed by the caller (unless NULL)
4132 ****************************************************************/
4133 static char *detect_proxy(struct connectdata *conn)
4137 #ifndef CURL_DISABLE_HTTP
4138 /* If proxy was not specified, we check for default proxy environment
4139 * variables, to enable i.e Lynx compliance:
4141 * http_proxy=http://some.server.dom:port/
4142 * https_proxy=http://some.server.dom:port/
4143 * ftp_proxy=http://some.server.dom:port/
4144 * no_proxy=domain1.dom,host.domain2.dom
4145 * (a comma-separated list of hosts which should
4146 * not be proxied, or an asterisk to override
4147 * all proxy variables)
4148 * all_proxy=http://some.server.dom:port/
4149 * (seems to exist for the CERN www lib. Probably
4150 * the first to check for.)
4152 * For compatibility, the all-uppercase versions of these variables are
4153 * checked if the lowercase versions don't exist.
4155 char *no_proxy=NULL;
4156 char proxy_env[128];
4158 no_proxy=curl_getenv("no_proxy");
4160 no_proxy=curl_getenv("NO_PROXY");
4162 if(!check_noproxy(conn->host.name, no_proxy)) {
4163 /* It was not listed as without proxy */
4164 const char *protop = conn->handler->scheme;
4165 char *envp = proxy_env;
4168 /* Now, build <protocol>_proxy and check for such a one to use */
4170 *envp++ = (char)tolower((int)*protop++);
4173 strcpy(envp, "_proxy");
4175 /* read the protocol proxy: */
4176 prox=curl_getenv(proxy_env);
4179 * We don't try the uppercase version of HTTP_PROXY because of
4182 * When curl is used in a webserver application
4183 * environment (cgi or php), this environment variable can
4184 * be controlled by the web server user by setting the
4185 * http header 'Proxy:' to some value.
4187 * This can cause 'internal' http/ftp requests to be
4188 * arbitrarily redirected by any external attacker.
4190 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4191 /* There was no lowercase variable, try the uppercase version: */
4192 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4193 prox=curl_getenv(proxy_env);
4196 if(prox && *prox) { /* don't count "" strings */
4197 proxy = prox; /* use this */
4200 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4202 proxy=curl_getenv("ALL_PROXY");
4204 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4209 #else /* !CURL_DISABLE_HTTP */
4212 #endif /* CURL_DISABLE_HTTP */
4218 * If this is supposed to use a proxy, we need to figure out the proxy
4219 * host name, so that we can re-use an existing connection
4220 * that may exist registered to the same proxy host.
4221 * proxy will be freed before this function returns.
4223 static CURLcode parse_proxy(struct SessionHandle *data,
4224 struct connectdata *conn, char *proxy)
4229 /* We use 'proxyptr' to point to the proxy name from now on... */
4234 /* We do the proxy host string parsing here. We want the host name and the
4235 * port name. Accept a protocol:// prefix
4238 /* Parse the protocol part if present */
4239 endofprot = strstr(proxy, "://");
4241 proxyptr = endofprot+3;
4242 if(checkprefix("socks5h", proxy))
4243 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4244 else if(checkprefix("socks5", proxy))
4245 conn->proxytype = CURLPROXY_SOCKS5;
4246 else if(checkprefix("socks4a", proxy))
4247 conn->proxytype = CURLPROXY_SOCKS4A;
4248 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4249 conn->proxytype = CURLPROXY_SOCKS4;
4250 /* Any other xxx:// : change to http proxy */
4253 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4255 /* Is there a username and password given in this proxy url? */
4256 atsign = strchr(proxyptr, '@');
4258 CURLcode res = CURLE_OK;
4259 char *proxyuser = NULL;
4260 char *proxypasswd = NULL;
4262 res = parse_login_details(proxyptr, atsign - proxyptr,
4263 &proxyuser, &proxypasswd, NULL);
4265 /* found user and password, rip them out. note that we are
4266 unescaping them, as there is otherwise no way to have a
4267 username or password with reserved characters like ':' in
4269 Curl_safefree(conn->proxyuser);
4270 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4271 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4273 conn->proxyuser = strdup("");
4275 if(!conn->proxyuser)
4276 res = CURLE_OUT_OF_MEMORY;
4278 Curl_safefree(conn->proxypasswd);
4279 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4280 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4282 conn->proxypasswd = strdup("");
4284 if(!conn->proxypasswd)
4285 res = CURLE_OUT_OF_MEMORY;
4289 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4290 atsign++; /* the right side of the @-letter */
4293 proxyptr = atsign; /* now use this instead */
4295 res = CURLE_OUT_OF_MEMORY;
4299 Curl_safefree(proxyuser);
4300 Curl_safefree(proxypasswd);
4306 /* start scanning for port number at this point */
4309 /* detect and extract RFC2732-style IPv6-addresses */
4310 if(*proxyptr == '[') {
4311 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4312 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4316 /* yeps, it ended nicely with a bracket as well */
4319 infof(data, "Invalid IPv6 address format\n");
4321 /* Note that if this didn't end with a bracket, we still advanced the
4322 * proxyptr first, but I can't see anything wrong with that as no host
4323 * name nor a numeric can legally start with a bracket.
4327 /* Get port number off proxy.server.com:1080 */
4328 prox_portno = strchr(portptr, ':');
4330 *prox_portno = 0x0; /* cut off number from host name */
4332 /* now set the local port number */
4333 conn->port = strtol(prox_portno, NULL, 10);
4336 if(proxyptr[0]=='/')
4337 /* If the first character in the proxy string is a slash, fail
4338 immediately. The following code will otherwise clear the string which
4339 will lead to code running as if no proxy was set! */
4340 return CURLE_COULDNT_RESOLVE_PROXY;
4342 /* without a port number after the host name, some people seem to use
4343 a slash so we strip everything from the first slash */
4344 atsign = strchr(proxyptr, '/');
4346 *atsign = 0x0; /* cut off path part from host name */
4348 if(data->set.proxyport)
4349 /* None given in the proxy string, then get the default one if it is
4351 conn->port = data->set.proxyport;
4354 /* now, clone the cleaned proxy host name */
4355 conn->proxy.rawalloc = strdup(proxyptr);
4356 conn->proxy.name = conn->proxy.rawalloc;
4358 if(!conn->proxy.rawalloc)
4359 return CURLE_OUT_OF_MEMORY;
4365 * Extract the user and password from the authentication string
4367 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4368 struct connectdata *conn)
4370 char proxyuser[MAX_CURL_USER_LENGTH]="";
4371 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4373 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4374 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4375 MAX_CURL_USER_LENGTH);
4376 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4378 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4379 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4380 MAX_CURL_PASSWORD_LENGTH);
4381 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4384 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4385 if(!conn->proxyuser)
4386 return CURLE_OUT_OF_MEMORY;
4388 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4389 if(!conn->proxypasswd)
4390 return CURLE_OUT_OF_MEMORY;
4394 #endif /* CURL_DISABLE_PROXY */
4399 * Parse the login details (user name, password and options) from the URL and
4400 * strip them out of the host name
4402 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4405 * Outputs: (almost :- all currently undefined)
4406 * conn->bits.user_passwd - non-zero if non-default passwords exist
4407 * user - non-zero length if defined
4408 * passwd - non-zero length if defined
4409 * options - non-zero length if defined
4410 * conn->host.name - remove user name and password
4412 static CURLcode parse_url_login(struct SessionHandle *data,
4413 struct connectdata *conn,
4414 char *user, char *passwd, char *options)
4416 CURLcode result = CURLE_OK;
4418 char *passwdp = NULL;
4419 char *optionsp = NULL;
4421 /* At this point, we're hoping all the other special cases have
4422 * been taken care of, so conn->host.name is at most
4423 * [user[:password][;options]]@]hostname
4425 * We need somewhere to put the embedded details, so do that first.
4428 char *ptr = strchr(conn->host.name, '@');
4429 char *login = conn->host.name;
4431 user[0] = 0; /* to make everything well-defined */
4435 /* We will now try to extract the
4436 * possible login information in a string like:
4437 * ftp://user:password@ftp.my.site:8021/README */
4439 /* There's login information to the left of the @ */
4441 conn->host.name = ++ptr;
4443 /* So the hostname is sane. Only bother interpreting the
4444 * results if we could care. It could still be wasted
4445 * work because it might be overtaken by the programmatically
4446 * set user/passwd, but doing that first adds more cases here :-(
4449 if(data->set.use_netrc != CURL_NETRC_REQUIRED) {
4450 /* We could use the login information in the URL so extract it */
4451 result = parse_login_details(login, ptr - login - 1,
4452 &userp, &passwdp, &optionsp);
4457 /* We have a user in the URL */
4458 conn->bits.userpwd_in_url = TRUE;
4459 conn->bits.user_passwd = TRUE; /* enable user+password */
4461 /* Decode the user */
4462 newname = curl_easy_unescape(data, userp, 0, NULL);
4464 Curl_safefree(userp);
4465 Curl_safefree(passwdp);
4466 Curl_safefree(optionsp);
4467 return CURLE_OUT_OF_MEMORY;
4470 if(strlen(newname) < MAX_CURL_USER_LENGTH)
4471 strcpy(user, newname);
4477 /* We have a password in the URL so decode it */
4478 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4480 Curl_safefree(userp);
4481 Curl_safefree(passwdp);
4482 Curl_safefree(optionsp);
4483 return CURLE_OUT_OF_MEMORY;
4486 if(strlen(newpasswd) < MAX_CURL_PASSWORD_LENGTH)
4487 strcpy(passwd, newpasswd);
4493 /* We have an options list in the URL so decode it */
4494 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4496 Curl_safefree(userp);
4497 Curl_safefree(passwdp);
4498 Curl_safefree(optionsp);
4499 return CURLE_OUT_OF_MEMORY;
4502 if(strlen(newoptions) < MAX_CURL_OPTIONS_LENGTH)
4503 strcpy(options, newoptions);
4509 Curl_safefree(userp);
4510 Curl_safefree(passwdp);
4511 Curl_safefree(optionsp);
4519 * parse_login_details()
4521 * This is used to parse a login string for user name, password and options in
4522 * the following formats:
4526 * user:password;options
4528 * user;options:password
4536 * login [in] - The login string.
4537 * len [in] - The length of the login string.
4538 * userp [in/out] - The address where a pointer to newly allocated memory
4539 * holding the user will be stored upon completion.
4540 * passdwp [in/out] - The address where a pointer to newly allocated memory
4541 * holding the password will be stored upon completion.
4542 * optionsp [in/out] - The address where a pointer to newly allocated memory
4543 * holding the options will be stored upon completion.
4545 * Returns CURLE_OK on success.
4547 static CURLcode parse_login_details(const char *login, const size_t len,
4548 char **userp, char **passwdp,
4551 CURLcode result = CURLE_OK;
4555 const char *psep = NULL;
4556 const char *osep = NULL;
4561 /* Attempt to find the password separator */
4563 psep = strchr(login, ':');
4565 /* Within the constraint of the login string */
4566 if(psep >= login + len)
4570 /* Attempt to find the options separator */
4572 osep = strchr(login, ';');
4574 /* Within the constraint of the login string */
4575 if(osep >= login + len)
4579 /* Calculate the portion lengths */
4581 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4582 (osep ? (size_t)(osep - login) : len));
4584 (osep && osep > psep ? (size_t)(osep - psep) :
4585 (size_t)(login + len - psep)) - 1 : 0);
4587 (psep && psep > osep ? (size_t)(psep - osep) :
4588 (size_t)(login + len - osep)) - 1 : 0);
4590 /* Allocate the user portion buffer */
4592 ubuf = malloc(ulen + 1);
4594 result = CURLE_OUT_OF_MEMORY;
4597 /* Allocate the password portion buffer */
4598 if(!result && passwdp && plen) {
4599 pbuf = malloc(plen + 1);
4601 Curl_safefree(ubuf);
4602 result = CURLE_OUT_OF_MEMORY;
4606 /* Allocate the options portion buffer */
4607 if(!result && optionsp && olen) {
4608 obuf = malloc(olen + 1);
4610 Curl_safefree(pbuf);
4611 Curl_safefree(ubuf);
4612 result = CURLE_OUT_OF_MEMORY;
4617 /* Store the user portion if necessary */
4619 memcpy(ubuf, login, ulen);
4621 Curl_safefree(*userp);
4625 /* Store the password portion if necessary */
4627 memcpy(pbuf, psep + 1, plen);
4629 Curl_safefree(*passwdp);
4633 /* Store the options portion if necessary */
4635 memcpy(obuf, osep + 1, olen);
4637 Curl_safefree(*optionsp);
4645 /*************************************************************
4646 * Figure out the remote port number and fix it in the URL
4648 * No matter if we use a proxy or not, we have to figure out the remote
4649 * port number of various reasons.
4651 * To be able to detect port number flawlessly, we must not confuse them
4652 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4654 * The conn->host.name is currently [user:passwd@]host[:port] where host
4655 * could be a hostname, IPv4 address or IPv6 address.
4657 * The port number embedded in the URL is replaced, if necessary.
4658 *************************************************************/
4659 static CURLcode parse_remote_port(struct SessionHandle *data,
4660 struct connectdata *conn)
4665 /* Note that at this point, the IPv6 address cannot contain any scope
4666 suffix as that has already been removed in the parseurlandfillconn()
4668 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4670 (']' == endbracket)) {
4671 /* this is a RFC2732-style specified IP-address */
4672 conn->bits.ipv6_ip = TRUE;
4674 conn->host.name++; /* skip over the starting bracket */
4675 portptr = strchr(conn->host.name, ']');
4677 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4679 portptr = NULL; /* no port number available */
4684 struct in6_addr in6;
4685 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4686 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4688 failf(data, "IPv6 numerical address used in URL without brackets");
4689 return CURLE_URL_MALFORMAT;
4693 portptr = strrchr(conn->host.name, ':');
4696 if(data->set.use_port && data->state.allow_port) {
4697 /* if set, we use this and ignore the port possibly given in the URL */
4698 conn->remote_port = (unsigned short)data->set.use_port;
4700 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4701 number - since the port number is to be ignored! */
4702 if(conn->bits.httpproxy) {
4703 /* we need to create new URL with the new port number */
4707 if(conn->bits.type_set)
4708 snprintf(type, sizeof(type), ";type=%c",
4709 data->set.prefer_ascii?'A':
4710 (data->set.ftp_list_only?'D':'I'));
4713 * This synthesized URL isn't always right--suffixes like ;type=A are
4714 * stripped off. It would be better to work directly from the original
4715 * URL and simply replace the port part of it.
4717 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4718 conn->bits.ipv6_ip?"[":"", conn->host.name,
4719 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4720 data->state.slash_removed?"/":"", data->state.path,
4723 return CURLE_OUT_OF_MEMORY;
4725 if(data->change.url_alloc) {
4726 Curl_safefree(data->change.url);
4727 data->change.url_alloc = FALSE;
4730 data->change.url = url;
4731 data->change.url_alloc = TRUE;
4735 /* no CURLOPT_PORT given, extract the one from the URL */
4740 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4742 if(rest != (portptr+1) && *rest == '\0') {
4743 /* The colon really did have only digits after it,
4744 * so it is either a port number or a mistake */
4746 if(port > 0xffff) { /* Single unix standard says port numbers are
4748 failf(data, "Port number too large: %lu", port);
4749 return CURLE_URL_MALFORMAT;
4752 *portptr = '\0'; /* cut off the name there */
4753 conn->remote_port = curlx_ultous(port);
4756 /* Browser behavior adaptation. If there's a colon with no digits after,
4757 just cut off the name there which makes us ignore the colon and just
4758 use the default port. Firefox and Chrome both do that. */
4765 * Override the login details from the URL with that in the CURLOPT_USERPWD
4766 * option or a .netrc file, if applicable.
4768 static void override_login(struct SessionHandle *data,
4769 struct connectdata *conn,
4770 char *user, char *passwd, char *options)
4772 if(data->set.str[STRING_USERNAME]) {
4773 strncpy(user, data->set.str[STRING_USERNAME], MAX_CURL_USER_LENGTH);
4774 user[MAX_CURL_USER_LENGTH - 1] = '\0'; /* To be on safe side */
4777 if(data->set.str[STRING_PASSWORD]) {
4778 strncpy(passwd, data->set.str[STRING_PASSWORD], MAX_CURL_PASSWORD_LENGTH);
4779 passwd[MAX_CURL_PASSWORD_LENGTH - 1] = '\0'; /* To be on safe side */
4782 if(data->set.str[STRING_OPTIONS]) {
4783 strncpy(options, data->set.str[STRING_OPTIONS], MAX_CURL_OPTIONS_LENGTH);
4784 options[MAX_CURL_OPTIONS_LENGTH - 1] = '\0'; /* To be on safe side */
4787 conn->bits.netrc = FALSE;
4788 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4789 if(Curl_parsenetrc(conn->host.name,
4791 data->set.str[STRING_NETRC_FILE])) {
4792 infof(data, "Couldn't find host %s in the "
4793 DOT_CHAR "netrc file; using defaults\n",
4797 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4798 file, so that it is safe to use even if we followed a Location: to a
4799 different host or similar. */
4800 conn->bits.netrc = TRUE;
4802 conn->bits.user_passwd = TRUE; /* enable user+password */
4808 * Set password so it's available in the connection.
4810 static CURLcode set_login(struct connectdata *conn,
4811 const char *user, const char *passwd,
4812 const char *options)
4814 CURLcode result = CURLE_OK;
4816 /* If our protocol needs a password and we have none, use the defaults */
4817 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4818 /* Store the default user */
4819 conn->user = strdup(CURL_DEFAULT_USER);
4821 /* Store the default password */
4823 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4825 conn->passwd = NULL;
4827 /* This is the default password, so DON'T set conn->bits.user_passwd */
4830 /* Store the user, zero-length if not set */
4831 conn->user = strdup(user);
4833 /* Store the password (only if user is present), zero-length if not set */
4835 conn->passwd = strdup(passwd);
4837 conn->passwd = NULL;
4840 if(!conn->user || !conn->passwd)
4841 result = CURLE_OUT_OF_MEMORY;
4843 /* Store the options, null if not set */
4844 if(!result && options[0]) {
4845 conn->options = strdup(options);
4848 result = CURLE_OUT_OF_MEMORY;
4854 /*************************************************************
4855 * Resolve the address of the server or proxy
4856 *************************************************************/
4857 static CURLcode resolve_server(struct SessionHandle *data,
4858 struct connectdata *conn,
4861 CURLcode result=CURLE_OK;
4862 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4864 /*************************************************************
4865 * Resolve the name of the server or proxy
4866 *************************************************************/
4867 if(conn->bits.reuse)
4868 /* We're reusing the connection - no need to resolve anything, and
4869 fix_hostname() was called already in create_conn() for the re-use
4874 /* this is a fresh connect */
4876 struct Curl_dns_entry *hostaddr;
4878 /* set a pointer to the hostname we display */
4879 fix_hostname(data, conn, &conn->host);
4881 if(!conn->proxy.name || !*conn->proxy.name) {
4882 /* If not connecting via a proxy, extract the port from the URL, if it is
4883 * there, thus overriding any defaults that might have been set above. */
4884 conn->port = conn->remote_port; /* it is the same port */
4886 /* Resolve target host right on */
4887 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4888 &hostaddr, timeout_ms);
4889 if(rc == CURLRESOLV_PENDING)
4892 else if(rc == CURLRESOLV_TIMEDOUT)
4893 result = CURLE_OPERATION_TIMEDOUT;
4895 else if(!hostaddr) {
4896 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4897 result = CURLE_COULDNT_RESOLVE_HOST;
4898 /* don't return yet, we need to clean up the timeout first */
4902 /* This is a proxy that hasn't been resolved yet. */
4904 /* IDN-fix the proxy name */
4905 fix_hostname(data, conn, &conn->proxy);
4908 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4909 &hostaddr, timeout_ms);
4911 if(rc == CURLRESOLV_PENDING)
4914 else if(rc == CURLRESOLV_TIMEDOUT)
4915 result = CURLE_OPERATION_TIMEDOUT;
4917 else if(!hostaddr) {
4918 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4919 result = CURLE_COULDNT_RESOLVE_PROXY;
4920 /* don't return yet, we need to clean up the timeout first */
4923 DEBUGASSERT(conn->dns_entry == NULL);
4924 conn->dns_entry = hostaddr;
4931 * Cleanup the connection just allocated before we can move along and use the
4932 * previously existing one. All relevant data is copied over and old_conn is
4933 * ready for freeing once this function returns.
4935 static void reuse_conn(struct connectdata *old_conn,
4936 struct connectdata *conn)
4938 if(old_conn->proxy.rawalloc)
4939 free(old_conn->proxy.rawalloc);
4941 /* free the SSL config struct from this connection struct as this was
4942 allocated in vain and is targeted for destruction */
4943 Curl_free_ssl_config(&old_conn->ssl_config);
4945 conn->data = old_conn->data;
4947 /* get the user+password information from the old_conn struct since it may
4948 * be new for this request even when we re-use an existing connection */
4949 conn->bits.user_passwd = old_conn->bits.user_passwd;
4950 if(conn->bits.user_passwd) {
4951 /* use the new user name and password though */
4952 Curl_safefree(conn->user);
4953 Curl_safefree(conn->passwd);
4954 conn->user = old_conn->user;
4955 conn->passwd = old_conn->passwd;
4956 old_conn->user = NULL;
4957 old_conn->passwd = NULL;
4960 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4961 if(conn->bits.proxy_user_passwd) {
4962 /* use the new proxy user name and proxy password though */
4963 Curl_safefree(conn->proxyuser);
4964 Curl_safefree(conn->proxypasswd);
4965 conn->proxyuser = old_conn->proxyuser;
4966 conn->proxypasswd = old_conn->proxypasswd;
4967 old_conn->proxyuser = NULL;
4968 old_conn->proxypasswd = NULL;
4971 /* host can change, when doing keepalive with a proxy or if the case is
4972 different this time etc */
4973 Curl_safefree(conn->host.rawalloc);
4974 conn->host=old_conn->host;
4976 /* persist connection info in session handle */
4977 Curl_persistconninfo(conn);
4980 conn->bits.reuse = TRUE; /* yes, we're re-using here */
4982 Curl_safefree(old_conn->user);
4983 Curl_safefree(old_conn->passwd);
4984 Curl_safefree(old_conn->proxyuser);
4985 Curl_safefree(old_conn->proxypasswd);
4986 Curl_safefree(old_conn->localdev);
4988 Curl_llist_destroy(old_conn->send_pipe, NULL);
4989 Curl_llist_destroy(old_conn->recv_pipe, NULL);
4991 old_conn->send_pipe = NULL;
4992 old_conn->recv_pipe = NULL;
4994 Curl_safefree(old_conn->master_buffer);
4998 * create_conn() sets up a new connectdata struct, or re-uses an already
4999 * existing one, and resolves host name.
5001 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5002 * response will be coming asynchronously. If *async is FALSE, the name is
5005 * @param data The sessionhandle pointer
5006 * @param in_connect is set to the next connection data pointer
5007 * @param async is set TRUE when an async DNS resolution is pending
5008 * @see Curl_setup_conn()
5010 * *NOTE* this function assigns the conn->data pointer!
5013 static CURLcode create_conn(struct SessionHandle *data,
5014 struct connectdata **in_connect,
5017 CURLcode result = CURLE_OK;
5018 struct connectdata *conn;
5019 struct connectdata *conn_temp = NULL;
5021 char user[MAX_CURL_USER_LENGTH];
5022 char passwd[MAX_CURL_PASSWORD_LENGTH];
5023 char options[MAX_CURL_OPTIONS_LENGTH];
5026 bool prot_missing = FALSE;
5027 bool no_connections_available = FALSE;
5029 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5030 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5034 /*************************************************************
5036 *************************************************************/
5038 if(!data->change.url)
5039 return CURLE_URL_MALFORMAT;
5041 /* First, split up the current URL in parts so that we can use the
5042 parts for checking against the already present connections. In order
5043 to not have to modify everything at once, we allocate a temporary
5044 connection data struct and fill in for comparison purposes. */
5045 conn = allocate_conn(data);
5048 return CURLE_OUT_OF_MEMORY;
5050 /* We must set the return variable as soon as possible, so that our
5051 parent can cleanup any possible allocs we may have done before
5055 /* This initing continues below, see the comment "Continue connectdata
5056 * initialization here" */
5058 /***********************************************************
5059 * We need to allocate memory to store the path in. We get the size of the
5060 * full URL to be sure, and we need to make it at least 256 bytes since
5061 * other parts of the code will rely on this fact
5062 ***********************************************************/
5063 #define LEAST_PATH_ALLOC 256
5064 urllen=strlen(data->change.url);
5065 if(urllen < LEAST_PATH_ALLOC)
5066 urllen=LEAST_PATH_ALLOC;
5069 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5070 * 1 - an extra terminating zero
5071 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5074 Curl_safefree(data->state.pathbuffer);
5075 data->state.path = NULL;
5077 data->state.pathbuffer = malloc(urllen+2);
5078 if(NULL == data->state.pathbuffer)
5079 return CURLE_OUT_OF_MEMORY; /* really bad error */
5080 data->state.path = data->state.pathbuffer;
5082 conn->host.rawalloc = malloc(urllen+2);
5083 if(NULL == conn->host.rawalloc) {
5084 Curl_safefree(data->state.pathbuffer);
5085 data->state.path = NULL;
5086 return CURLE_OUT_OF_MEMORY;
5089 conn->host.name = conn->host.rawalloc;
5090 conn->host.name[0] = 0;
5092 result = parseurlandfillconn(data, conn, &prot_missing, user, passwd,
5094 if(result != CURLE_OK)
5097 /*************************************************************
5098 * No protocol part in URL was used, add it!
5099 *************************************************************/
5101 /* We're guessing prefixes here and if we're told to use a proxy or if
5102 we're gonna follow a Location: later or... then we need the protocol
5103 part added so that we have a valid URL. */
5106 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5109 Curl_safefree(proxy);
5110 return CURLE_OUT_OF_MEMORY;
5113 if(data->change.url_alloc) {
5114 Curl_safefree(data->change.url);
5115 data->change.url_alloc = FALSE;
5118 data->change.url = reurl;
5119 data->change.url_alloc = TRUE; /* free this later */
5122 /*************************************************************
5123 * If the protocol can't handle url query strings, then cut
5124 * of the unhandable part
5125 *************************************************************/
5126 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5127 char *path_q_sep = strchr(conn->data->state.path, '?');
5129 /* according to rfc3986, allow the query (?foo=bar)
5130 also on protocols that can't handle it.
5132 cut the string-part after '?'
5135 /* terminate the string */
5140 #ifndef CURL_DISABLE_PROXY
5141 /*************************************************************
5142 * Extract the user and password from the authentication string
5143 *************************************************************/
5144 if(conn->bits.proxy_user_passwd) {
5145 result = parse_proxy_auth(data, conn);
5146 if(result != CURLE_OK)
5150 /*************************************************************
5151 * Detect what (if any) proxy to use
5152 *************************************************************/
5153 if(data->set.str[STRING_PROXY]) {
5154 proxy = strdup(data->set.str[STRING_PROXY]);
5155 /* if global proxy is set, this is it */
5157 failf(data, "memory shortage");
5158 return CURLE_OUT_OF_MEMORY;
5162 if(data->set.str[STRING_NOPROXY] &&
5163 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5165 free(proxy); /* proxy is in exception list */
5170 proxy = detect_proxy(conn);
5172 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5173 free(proxy); /* Don't bother with an empty proxy string or if the
5174 protocol doesn't work with network */
5178 /***********************************************************************
5179 * If this is supposed to use a proxy, we need to figure out the proxy host
5180 * name, proxy type and port number, so that we can re-use an existing
5181 * connection that may exist registered to the same proxy host.
5182 ***********************************************************************/
5184 result = parse_proxy(data, conn, proxy);
5186 free(proxy); /* parse_proxy copies the proxy string */
5191 if((conn->proxytype == CURLPROXY_HTTP) ||
5192 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5193 #ifdef CURL_DISABLE_HTTP
5194 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5195 return CURLE_UNSUPPORTED_PROTOCOL;
5197 /* force this connection's protocol to become HTTP if not already
5198 compatible - if it isn't tunneling through */
5199 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5200 !conn->bits.tunnel_proxy)
5201 conn->handler = &Curl_handler_http;
5203 conn->bits.httpproxy = TRUE;
5207 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5208 conn->bits.proxy = TRUE;
5211 /* we aren't using the proxy after all... */
5212 conn->bits.proxy = FALSE;
5213 conn->bits.httpproxy = FALSE;
5214 conn->bits.proxy_user_passwd = FALSE;
5215 conn->bits.tunnel_proxy = FALSE;
5218 #endif /* CURL_DISABLE_PROXY */
5220 /*************************************************************
5221 * Setup internals depending on protocol. Needs to be done after
5222 * we figured out what/if proxy to use.
5223 *************************************************************/
5224 result = setup_connection_internals(conn);
5225 if(result != CURLE_OK) {
5226 Curl_safefree(proxy);
5230 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5231 conn->send[FIRSTSOCKET] = Curl_send_plain;
5232 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5233 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5235 /***********************************************************************
5236 * file: is a special case in that it doesn't need a network connection
5237 ***********************************************************************/
5238 #ifndef CURL_DISABLE_FILE
5239 if(conn->handler->flags & PROTOPT_NONETWORK) {
5241 /* this is supposed to be the connect function so we better at least check
5242 that the file is present here! */
5243 DEBUGASSERT(conn->handler->connect_it);
5244 result = conn->handler->connect_it(conn, &done);
5246 /* Setup a "faked" transfer that'll do nothing */
5247 if(CURLE_OK == result) {
5249 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5251 ConnectionStore(data, conn);
5254 * Setup whatever necessary for a resumed transfer
5256 result = setup_range(data);
5258 DEBUGASSERT(conn->handler->done);
5259 /* we ignore the return code for the protocol-specific DONE */
5260 (void)conn->handler->done(conn, result, FALSE);
5264 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5265 -1, NULL); /* no upload */
5268 /* since we skip do_init() */
5269 Curl_speedinit(data);
5275 /*************************************************************
5276 * If the protocol is using SSL and HTTP proxy is used, we set
5277 * the tunnel_proxy bit.
5278 *************************************************************/
5279 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5280 conn->bits.tunnel_proxy = TRUE;
5282 /*************************************************************
5283 * Figure out the remote port number and fix it in the URL
5284 *************************************************************/
5285 result = parse_remote_port(data, conn);
5286 if(result != CURLE_OK)
5289 /* Check for overridden login details and set them accordingly */
5290 override_login(data, conn, user, passwd, options);
5291 result = set_login(conn, user, passwd, options);
5292 if(result != CURLE_OK)
5295 /* Get a cloned copy of the SSL config situation stored in the
5296 connection struct. But to get this going nicely, we must first make
5297 sure that the strings in the master copy are pointing to the correct
5298 strings in the session handle strings array!
5300 Keep in mind that the pointers in the master copy are pointing to strings
5301 that will be freed as part of the SessionHandle struct, but all cloned
5302 copies will be separately allocated.
5304 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5305 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5306 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5307 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5308 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5309 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5310 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5312 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5313 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5316 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config))
5317 return CURLE_OUT_OF_MEMORY;
5319 /*************************************************************
5320 * Check the current list of connections to see if we can
5321 * re-use an already existing one or if we have to create a
5323 *************************************************************/
5325 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5326 we only acknowledge this option if this is not a re-used connection
5327 already (which happens due to follow-location or during a HTTP
5328 authentication phase). */
5329 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5332 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5334 /* If we found a reusable connection, we may still want to
5335 open a new connection if we are pipelining. */
5336 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5337 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5339 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5340 conn_temp->connection_id, pipelen);
5342 if(conn_temp->bundle->num_connections < max_host_connections &&
5343 data->state.conn_cache->num_connections < max_total_connections) {
5344 /* We want a new connection anyway */
5347 infof(data, "We can reuse, but we want a new connection anyway\n");
5354 * We already have a connection for this, we got the former connection
5355 * in the conn_temp variable and thus we need to cleanup the one we
5356 * just allocated before we can move along and use the previously
5359 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5360 handle in a multi stack may nick it */
5361 reuse_conn(conn, conn_temp);
5362 free(conn); /* we don't need this anymore */
5366 /* set a pointer to the hostname we display */
5367 fix_hostname(data, conn, &conn->host);
5369 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5370 conn->connection_id,
5371 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5374 /* We have decided that we want a new connection. However, we may not
5375 be able to do that if we have reached the limit of how many
5376 connections we are allowed to open. */
5377 struct connectbundle *bundle;
5379 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5381 if(max_host_connections > 0 && bundle &&
5382 (bundle->num_connections >= max_host_connections)) {
5383 struct connectdata *conn_candidate;
5385 /* The bundle is full. Let's see if we can kill a connection. */
5386 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5388 if(conn_candidate) {
5389 /* Set the connection's owner correctly, then kill it */
5390 conn_candidate->data = data;
5391 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5394 no_connections_available = TRUE;
5397 if(max_total_connections > 0 &&
5398 (data->state.conn_cache->num_connections >= max_total_connections)) {
5399 struct connectdata *conn_candidate;
5401 /* The cache is full. Let's see if we can kill a connection. */
5402 conn_candidate = find_oldest_idle_connection(data);
5404 if(conn_candidate) {
5405 /* Set the connection's owner correctly, then kill it */
5406 conn_candidate->data = data;
5407 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5410 no_connections_available = TRUE;
5414 if(no_connections_available) {
5415 infof(data, "No connections available.\n");
5420 return CURLE_NO_CONNECTION_AVAILABLE;
5424 * This is a brand new connection, so let's store it in the connection
5427 ConnectionStore(data, conn);
5431 /* Mark the connection as used */
5434 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5438 * Setup whatever necessary for a resumed transfer
5440 result = setup_range(data);
5444 /* Continue connectdata initialization here. */
5447 * Inherit the proper values from the urldata struct AFTER we have arranged
5448 * the persistent connection stuff
5450 conn->fread_func = data->set.fread_func;
5451 conn->fread_in = data->set.in;
5452 conn->seek_func = data->set.seek_func;
5453 conn->seek_client = data->set.seek_client;
5455 /*************************************************************
5456 * Resolve the address of the server or proxy
5457 *************************************************************/
5458 result = resolve_server(data, conn, async);
5463 /* Curl_setup_conn() is called after the name resolve initiated in
5464 * create_conn() is all done.
5466 * Curl_setup_conn() also handles reused connections
5468 * conn->data MUST already have been setup fine (in create_conn)
5471 CURLcode Curl_setup_conn(struct connectdata *conn,
5472 bool *protocol_done)
5474 CURLcode result = CURLE_OK;
5475 struct SessionHandle *data = conn->data;
5477 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5479 if(conn->handler->flags & PROTOPT_NONETWORK) {
5480 /* nothing to setup when not using a network */
5481 *protocol_done = TRUE;
5484 *protocol_done = FALSE; /* default to not done */
5486 /* set proxy_connect_closed to false unconditionally already here since it
5487 is used strictly to provide extra information to a parent function in the
5488 case of proxy CONNECT failures and we must make sure we don't have it
5489 lingering set from a previous invoke */
5490 conn->bits.proxy_connect_closed = FALSE;
5493 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5494 * basically anything through a http proxy we can't limit this based on
5497 if(data->set.str[STRING_USERAGENT]) {
5498 Curl_safefree(conn->allocptr.uagent);
5499 conn->allocptr.uagent =
5500 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5501 if(!conn->allocptr.uagent)
5502 return CURLE_OUT_OF_MEMORY;
5505 data->req.headerbytecount = 0;
5507 #ifdef CURL_DO_LINEEND_CONV
5508 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5509 #endif /* CURL_DO_LINEEND_CONV */
5511 /* set start time here for timeout purposes in the connect procedure, it
5512 is later set again for the progress meter purpose */
5513 conn->now = Curl_tvnow();
5516 /* loop for CURL_SERVER_CLOSED_CONNECTION */
5518 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5519 /* Try to connect only if not already connected */
5520 bool connected = FALSE;
5522 result = ConnectPlease(data, conn, &connected);
5524 if(result && !conn->ip_addr) {
5525 /* transport connection failure not related with authentication */
5526 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5531 result = Curl_protocol_connect(conn, protocol_done);
5532 if(CURLE_OK == result)
5533 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5536 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5538 /* if the connection was closed by the server while exchanging
5539 authentication informations, retry with the new set
5540 authentication information */
5541 if(conn->bits.proxy_connect_closed) {
5542 /* reset the error buffer */
5543 if(data->set.errorbuffer)
5544 data->set.errorbuffer[0] = '\0';
5545 data->state.errorbuf = FALSE;
5549 if(CURLE_OK != result)
5553 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5554 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5555 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5556 *protocol_done = TRUE;
5557 Curl_verboseconnect(conn);
5558 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5560 /* Stop the loop now */
5564 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5565 set this here perhaps a second time */
5569 * This check is quite a hack. We're calling _fsetmode to fix the problem
5570 * with fwrite converting newline characters (you get mangled text files,
5571 * and corrupted binary files when you download to stdout and redirect it to
5575 if((data->set.out)->_handle == NULL) {
5576 _fsetmode(stdout, "b");
5583 CURLcode Curl_connect(struct SessionHandle *data,
5584 struct connectdata **in_connect,
5586 bool *protocol_done)
5590 *asyncp = FALSE; /* assume synchronous resolves by default */
5592 /* call the stuff that needs to be called */
5593 code = create_conn(data, in_connect, asyncp);
5595 if(CURLE_OK == code) {
5597 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5599 *protocol_done = TRUE;
5601 /* DNS resolution is done: that's either because this is a reused
5602 connection, in which case DNS was unnecessary, or because DNS
5603 really did finish already (synch resolver/fast async resolve) */
5604 code = Curl_setup_conn(*in_connect, protocol_done);
5608 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5613 if(code && *in_connect) {
5614 /* We're not allowed to return failure with memory left allocated
5615 in the connectdata struct, free those here */
5616 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5617 *in_connect = NULL; /* return a NULL */
5623 CURLcode Curl_done(struct connectdata **connp,
5624 CURLcode status, /* an error if this is called after an
5625 error was detected */
5629 struct connectdata *conn;
5630 struct SessionHandle *data;
5632 DEBUGASSERT(*connp);
5638 /* Stop if Curl_done() has already been called */
5641 Curl_getoff_all_pipelines(data, conn);
5643 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5644 !data->set.reuse_forbid &&
5646 /* Stop if pipeline is not empty and we do not have to close
5650 conn->bits.done = TRUE; /* called just now! */
5652 /* Cleanup possible redirect junk */
5653 if(data->req.newurl) {
5654 free(data->req.newurl);
5655 data->req.newurl = NULL;
5657 if(data->req.location) {
5658 free(data->req.location);
5659 data->req.location = NULL;
5662 Curl_resolver_cancel(conn);
5664 if(conn->dns_entry) {
5665 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5666 conn->dns_entry = NULL;
5669 if(status == CURLE_ABORTED_BY_CALLBACK)
5670 /* When we're aborted due to a callback return code it basically have to
5671 be counted as premature as there is trouble ahead if we don't. We have
5672 many callbacks and protocols work differently, we could potentially do
5673 this more fine-grained in the future. */
5676 /* this calls the protocol-specific function pointer previously set */
5677 if(conn->handler->done)
5678 result = conn->handler->done(conn, status, premature);
5682 if(Curl_pgrsDone(conn) && !result)
5683 result = CURLE_ABORTED_BY_CALLBACK;
5685 /* if the transfer was completed in a paused state there can be buffered
5686 data left to write and then kill */
5687 if(data->state.tempwrite) {
5688 free(data->state.tempwrite);
5689 data->state.tempwrite = NULL;
5692 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5693 forced us to close this no matter what we think.
5695 if conn->bits.close is TRUE, it means that the connection should be
5696 closed in spite of all our efforts to be nice, due to protocol
5697 restrictions in our or the server's end
5699 if premature is TRUE, it means this connection was said to be DONE before
5700 the entire request operation is complete and thus we can't know in what
5701 state it is for re-using, so we're forced to close it. In a perfect world
5702 we can add code that keep track of if we really must close it here or not,
5703 but currently we have no such detail knowledge.
5705 if(data->set.reuse_forbid || conn->bits.close || premature) {
5706 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5708 /* If we had an error already, make sure we return that one. But
5709 if we got a new error, return that. */
5714 /* the connection is no longer in use */
5715 if(ConnectionDone(data, conn)) {
5716 /* remember the most recently used connection */
5717 data->state.lastconnect = conn;
5719 infof(data, "Connection #%ld to host %s left intact\n",
5720 conn->connection_id,
5721 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5724 data->state.lastconnect = NULL;
5727 *connp = NULL; /* to make the caller of this function better detect that
5728 this was either closed or handed over to the connection
5729 cache here, and therefore cannot be used from this point on
5736 * do_init() inits the readwrite session. This is inited each time (in the DO
5737 * function before the protocol-specific DO functions are invoked) for a
5738 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5739 * nothing in here depends on stuff that are setup dynamically for the
5743 static CURLcode do_init(struct connectdata *conn)
5745 struct SessionHandle *data = conn->data;
5746 struct SingleRequest *k = &data->req;
5748 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5749 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5750 data->state.expect100header = FALSE;
5752 if(data->set.opt_no_body)
5753 /* in HTTP lingo, no body means using the HEAD request... */
5754 data->set.httpreq = HTTPREQ_HEAD;
5755 else if(HTTPREQ_HEAD == data->set.httpreq)
5756 /* ... but if unset there really is no perfect method that is the
5757 "opposite" of HEAD but in reality most people probably think GET
5758 then. The important thing is that we can't let it remain HEAD if the
5759 opt_no_body is set FALSE since then we'll behave wrong when getting
5761 data->set.httpreq = HTTPREQ_GET;
5763 /* NB: the content encoding software depends on this initialization */
5764 Curl_easy_initHandleData(data);
5766 k->start = Curl_tvnow(); /* start time */
5767 k->now = k->start; /* current time is now */
5768 k->header = TRUE; /* assume header */
5772 k->buf = data->state.buffer;
5773 k->uploadbuf = data->state.uploadbuffer;
5774 k->hbufp = data->state.headerbuff;
5775 k->ignorebody=FALSE;
5777 Curl_speedinit(data);
5779 Curl_pgrsSetUploadCounter(data, 0);
5780 Curl_pgrsSetDownloadCounter(data, 0);
5786 * do_complete is called when the DO actions are complete.
5788 * We init chunking and trailer bits to their default values here immediately
5789 * before receiving any header data for the current request in the pipeline.
5791 static void do_complete(struct connectdata *conn)
5793 conn->data->req.chunk=FALSE;
5794 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5795 conn->sockfd:conn->writesockfd)+1;
5796 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5799 CURLcode Curl_do(struct connectdata **connp, bool *done)
5801 CURLcode result=CURLE_OK;
5802 struct connectdata *conn = *connp;
5803 struct SessionHandle *data = conn->data;
5805 if(conn->handler->do_it) {
5806 /* generic protocol-specific function pointer set in curl_connect() */
5807 result = conn->handler->do_it(conn, done);
5809 /* This was formerly done in transfer.c, but we better do it here */
5810 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5812 * If the connection is using an easy handle, call reconnect
5813 * to re-establish the connection. Otherwise, let the multi logic
5814 * figure out how to re-establish the connection.
5817 result = Curl_reconnect_request(connp);
5819 if(result == CURLE_OK) {
5820 /* ... finally back to actually retry the DO phase */
5821 conn = *connp; /* re-assign conn since Curl_reconnect_request
5822 creates a new connection */
5823 result = conn->handler->do_it(conn, done);
5830 if((result == CURLE_OK) && *done)
5831 /* do_complete must be called after the protocol-specific DO function */
5838 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5839 * second stage DO state which (wrongly) was introduced to support FTP's
5840 * second connection.
5842 * TODO: A future libcurl should be able to work away this state.
5846 CURLcode Curl_do_more(struct connectdata *conn, bool *completed)
5848 CURLcode result=CURLE_OK;
5852 if(conn->handler->do_more)
5853 result = conn->handler->do_more(conn, completed);
5855 if(!result && *completed)
5856 /* do_complete must be called after the protocol-specific DO function */
5862 /* Called on connect, and if there's already a protocol-specific struct
5863 allocated for a different connection, this frees it that it can be setup
5864 properly later on. */
5865 void Curl_reset_reqproto(struct connectdata *conn)
5867 struct SessionHandle *data = conn->data;
5868 if(data->state.proto.generic && data->state.current_conn != conn) {
5869 free(data->state.proto.generic);
5870 data->state.proto.generic = NULL;
5872 data->state.current_conn = conn;