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_PROGRESSDATA:
1616 * Custom client data to pass to the progress callback
1618 data->set.progress_client = va_arg(param, void *);
1621 #ifndef CURL_DISABLE_PROXY
1622 case CURLOPT_PROXYUSERPWD:
1624 * user:password needed to use the proxy
1626 result = setstropt_userpwd(va_arg(param, char *),
1627 &data->set.str[STRING_PROXYUSERNAME],
1628 &data->set.str[STRING_PROXYPASSWORD], NULL);
1630 case CURLOPT_PROXYUSERNAME:
1632 * authentication user name to use in the operation
1634 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1635 va_arg(param, char *));
1637 case CURLOPT_PROXYPASSWORD:
1639 * authentication password to use in the operation
1641 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1642 va_arg(param, char *));
1644 case CURLOPT_NOPROXY:
1646 * proxy exception list
1648 result = setstropt(&data->set.str[STRING_NOPROXY],
1649 va_arg(param, char *));
1655 * What range of the file you want to transfer
1657 result = setstropt(&data->set.str[STRING_SET_RANGE],
1658 va_arg(param, char *));
1660 case CURLOPT_RESUME_FROM:
1662 * Resume transfer at the give file position
1664 data->set.set_resume_from = va_arg(param, long);
1666 case CURLOPT_RESUME_FROM_LARGE:
1668 * Resume transfer at the give file position
1670 data->set.set_resume_from = va_arg(param, curl_off_t);
1672 case CURLOPT_DEBUGFUNCTION:
1674 * stderr write callback.
1676 data->set.fdebug = va_arg(param, curl_debug_callback);
1678 * if the callback provided is NULL, it'll use the default callback
1681 case CURLOPT_DEBUGDATA:
1683 * Set to a void * that should receive all error writes. This
1684 * defaults to CURLOPT_STDERR for normal operations.
1686 data->set.debugdata = va_arg(param, void *);
1688 case CURLOPT_STDERR:
1690 * Set to a FILE * that should receive all error writes. This
1691 * defaults to stderr for normal operations.
1693 data->set.err = va_arg(param, FILE *);
1695 data->set.err = stderr;
1697 case CURLOPT_HEADERFUNCTION:
1699 * Set header write callback
1701 data->set.fwrite_header = va_arg(param, curl_write_callback);
1703 case CURLOPT_WRITEFUNCTION:
1705 * Set data write callback
1707 data->set.fwrite_func = va_arg(param, curl_write_callback);
1708 if(!data->set.fwrite_func) {
1709 data->set.is_fwrite_set = 0;
1710 /* When set to NULL, reset to our internal default function */
1711 data->set.fwrite_func = (curl_write_callback)fwrite;
1714 data->set.is_fwrite_set = 1;
1716 case CURLOPT_READFUNCTION:
1718 * Read data callback
1720 data->set.fread_func = va_arg(param, curl_read_callback);
1721 if(!data->set.fread_func) {
1722 data->set.is_fread_set = 0;
1723 /* When set to NULL, reset to our internal default function */
1724 data->set.fread_func = (curl_read_callback)fread;
1727 data->set.is_fread_set = 1;
1729 case CURLOPT_SEEKFUNCTION:
1731 * Seek callback. Might be NULL.
1733 data->set.seek_func = va_arg(param, curl_seek_callback);
1735 case CURLOPT_SEEKDATA:
1737 * Seek control callback. Might be NULL.
1739 data->set.seek_client = va_arg(param, void *);
1741 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1743 * "Convert from network encoding" callback
1745 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1747 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1749 * "Convert to network encoding" callback
1751 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1753 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1755 * "Convert from UTF-8 encoding" callback
1757 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1759 case CURLOPT_IOCTLFUNCTION:
1761 * I/O control callback. Might be NULL.
1763 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1765 case CURLOPT_IOCTLDATA:
1767 * I/O control data pointer. Might be NULL.
1769 data->set.ioctl_client = va_arg(param, void *);
1771 case CURLOPT_SSLCERT:
1773 * String that holds file name of the SSL certificate to use
1775 result = setstropt(&data->set.str[STRING_CERT],
1776 va_arg(param, char *));
1778 case CURLOPT_SSLCERTTYPE:
1780 * String that holds file type of the SSL certificate to use
1782 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1783 va_arg(param, char *));
1785 case CURLOPT_SSLKEY:
1787 * String that holds file name of the SSL key to use
1789 result = setstropt(&data->set.str[STRING_KEY],
1790 va_arg(param, char *));
1792 case CURLOPT_SSLKEYTYPE:
1794 * String that holds file type of the SSL key to use
1796 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1797 va_arg(param, char *));
1799 case CURLOPT_KEYPASSWD:
1801 * String that holds the SSL or SSH private key password.
1803 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1804 va_arg(param, char *));
1806 case CURLOPT_SSLENGINE:
1808 * String that holds the SSL crypto engine.
1810 argptr = va_arg(param, char *);
1811 if(argptr && argptr[0])
1812 result = Curl_ssl_set_engine(data, argptr);
1815 case CURLOPT_SSLENGINE_DEFAULT:
1817 * flag to set engine as default.
1819 result = Curl_ssl_set_engine_default(data);
1823 * Kludgy option to enable CRLF conversions. Subject for removal.
1825 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1828 case CURLOPT_INTERFACE:
1830 * Set what interface or address/hostname to bind the socket to when
1831 * performing an operation and thus what from-IP your connection will use.
1833 result = setstropt(&data->set.str[STRING_DEVICE],
1834 va_arg(param, char *));
1836 case CURLOPT_LOCALPORT:
1838 * Set what local port to bind the socket to when performing an operation.
1840 data->set.localport = curlx_sltous(va_arg(param, long));
1842 case CURLOPT_LOCALPORTRANGE:
1844 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1846 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1848 case CURLOPT_KRBLEVEL:
1850 * A string that defines the kerberos security level.
1852 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1853 va_arg(param, char *));
1854 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1856 case CURLOPT_GSSAPI_DELEGATION:
1858 * GSSAPI credential delegation
1860 data->set.gssapi_delegation = va_arg(param, long);
1862 case CURLOPT_SSL_VERIFYPEER:
1864 * Enable peer SSL verifying.
1866 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1868 case CURLOPT_SSL_VERIFYHOST:
1870 * Enable verification of the host name in the peer certificate
1872 arg = va_arg(param, long);
1874 /* Obviously people are not reading documentation and too many thought
1875 this argument took a boolean when it wasn't and misused it. We thus ban
1876 1 as a sensible input and we warn about its use. Then we only have the
1877 2 action internally stored as TRUE. */
1880 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1881 return CURLE_BAD_FUNCTION_ARGUMENT;
1884 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1887 /* since these two options are only possible to use on an OpenSSL-
1888 powered libcurl we #ifdef them on this condition so that libcurls
1889 built against other SSL libs will return a proper error when trying
1890 to set this option! */
1891 case CURLOPT_SSL_CTX_FUNCTION:
1893 * Set a SSL_CTX callback
1895 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1897 case CURLOPT_SSL_CTX_DATA:
1899 * Set a SSL_CTX callback parameter pointer
1901 data->set.ssl.fsslctxp = va_arg(param, void *);
1903 case CURLOPT_CERTINFO:
1904 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1907 case CURLOPT_CAINFO:
1909 * Set CA info for SSL connection. Specify file name of the CA certificate
1911 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1912 va_arg(param, char *));
1914 case CURLOPT_CAPATH:
1916 * Set CA path info for SSL connection. Specify directory name of the CA
1917 * certificates which have been prepared using openssl c_rehash utility.
1919 /* This does not work on windows. */
1920 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1921 va_arg(param, char *));
1923 case CURLOPT_CRLFILE:
1925 * Set CRL file info for SSL connection. Specify file name of the CRL
1926 * to check certificates revocation
1928 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1929 va_arg(param, char *));
1931 case CURLOPT_ISSUERCERT:
1933 * Set Issuer certificate file
1934 * to check certificates issuer
1936 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1937 va_arg(param, char *));
1939 case CURLOPT_TELNETOPTIONS:
1941 * Set a linked list of telnet options
1943 data->set.telnet_options = va_arg(param, struct curl_slist *);
1946 case CURLOPT_BUFFERSIZE:
1948 * The application kindly asks for a differently sized receive buffer.
1949 * If it seems reasonable, we'll use it.
1951 data->set.buffer_size = va_arg(param, long);
1953 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1954 (data->set.buffer_size < 1))
1955 data->set.buffer_size = 0; /* huge internal default */
1959 case CURLOPT_NOSIGNAL:
1961 * The application asks not to set any signal() or alarm() handlers,
1962 * even when using a timeout.
1964 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
1969 struct Curl_share *set;
1970 set = va_arg(param, struct Curl_share *);
1972 /* disconnect from old share, if any */
1974 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
1976 if(data->dns.hostcachetype == HCACHE_SHARED) {
1977 data->dns.hostcache = NULL;
1978 data->dns.hostcachetype = HCACHE_NONE;
1981 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
1982 if(data->share->cookies == data->cookies)
1983 data->cookies = NULL;
1986 if(data->share->sslsession == data->state.session)
1987 data->state.session = NULL;
1989 data->share->dirty--;
1991 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
1995 /* use new share if it set */
1999 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2001 data->share->dirty++;
2003 if(data->share->hostcache) {
2004 /* use shared host cache */
2005 data->dns.hostcache = data->share->hostcache;
2006 data->dns.hostcachetype = HCACHE_SHARED;
2008 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2009 if(data->share->cookies) {
2010 /* use shared cookie list, first free own one if any */
2012 Curl_cookie_cleanup(data->cookies);
2013 /* enable cookies since we now use a share that uses cookies! */
2014 data->cookies = data->share->cookies;
2016 #endif /* CURL_DISABLE_HTTP */
2017 if(data->share->sslsession) {
2018 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2019 data->state.session = data->share->sslsession;
2021 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2024 /* check for host cache not needed,
2025 * it will be done by curl_easy_perform */
2029 case CURLOPT_PRIVATE:
2031 * Set private data pointer.
2033 data->set.private_data = va_arg(param, void *);
2036 case CURLOPT_MAXFILESIZE:
2038 * Set the maximum size of a file to download.
2040 data->set.max_filesize = va_arg(param, long);
2044 case CURLOPT_USE_SSL:
2046 * Make transfers attempt to use SSL/TLS.
2048 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2051 case CURLOPT_SSL_OPTIONS:
2052 arg = va_arg(param, long);
2053 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2057 case CURLOPT_FTPSSLAUTH:
2059 * Set a specific auth for FTP-SSL transfers.
2061 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2064 case CURLOPT_IPRESOLVE:
2065 data->set.ipver = va_arg(param, long);
2068 case CURLOPT_MAXFILESIZE_LARGE:
2070 * Set the maximum size of a file to download.
2072 data->set.max_filesize = va_arg(param, curl_off_t);
2075 case CURLOPT_TCP_NODELAY:
2077 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2080 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2083 case CURLOPT_FTP_ACCOUNT:
2084 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2085 va_arg(param, char *));
2088 case CURLOPT_IGNORE_CONTENT_LENGTH:
2089 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2092 case CURLOPT_CONNECT_ONLY:
2094 * No data transfer, set up connection and let application use the socket
2096 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2099 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2100 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2101 va_arg(param, char *));
2104 case CURLOPT_SOCKOPTFUNCTION:
2106 * socket callback function: called after socket() but before connect()
2108 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2111 case CURLOPT_SOCKOPTDATA:
2113 * socket callback data pointer. Might be NULL.
2115 data->set.sockopt_client = va_arg(param, void *);
2118 case CURLOPT_OPENSOCKETFUNCTION:
2120 * open/create socket callback function: called instead of socket(),
2123 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2126 case CURLOPT_OPENSOCKETDATA:
2128 * socket callback data pointer. Might be NULL.
2130 data->set.opensocket_client = va_arg(param, void *);
2133 case CURLOPT_CLOSESOCKETFUNCTION:
2135 * close socket callback function: called instead of close()
2136 * when shutting down a connection
2138 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2141 case CURLOPT_CLOSESOCKETDATA:
2143 * socket callback data pointer. Might be NULL.
2145 data->set.closesocket_client = va_arg(param, void *);
2148 case CURLOPT_SSL_SESSIONID_CACHE:
2149 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2153 /* we only include SSH options if explicitly built to support SSH */
2154 case CURLOPT_SSH_AUTH_TYPES:
2155 data->set.ssh_auth_types = va_arg(param, long);
2158 case CURLOPT_SSH_PUBLIC_KEYFILE:
2160 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2162 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2163 va_arg(param, char *));
2166 case CURLOPT_SSH_PRIVATE_KEYFILE:
2168 * Use this file instead of the $HOME/.ssh/id_dsa file
2170 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2171 va_arg(param, char *));
2173 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2175 * Option to allow for the MD5 of the host public key to be checked
2176 * for validation purposes.
2178 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2179 va_arg(param, char *));
2181 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2182 case CURLOPT_SSH_KNOWNHOSTS:
2184 * Store the file name to read known hosts from.
2186 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2187 va_arg(param, char *));
2190 case CURLOPT_SSH_KEYFUNCTION:
2191 /* setting to NULL is fine since the ssh.c functions themselves will
2192 then rever to use the internal default */
2193 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2196 case CURLOPT_SSH_KEYDATA:
2198 * Custom client data to pass to the SSH keyfunc callback
2200 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2202 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2204 #endif /* USE_LIBSSH2 */
2206 case CURLOPT_HTTP_TRANSFER_DECODING:
2208 * disable libcurl transfer encoding is used
2210 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2213 case CURLOPT_HTTP_CONTENT_DECODING:
2215 * raw data passed to the application when content encoding is used
2217 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2220 case CURLOPT_NEW_FILE_PERMS:
2222 * Uses these permissions instead of 0644
2224 data->set.new_file_perms = va_arg(param, long);
2227 case CURLOPT_NEW_DIRECTORY_PERMS:
2229 * Uses these permissions instead of 0755
2231 data->set.new_directory_perms = va_arg(param, long);
2234 case CURLOPT_ADDRESS_SCOPE:
2236 * We always get longs when passed plain numericals, but for this value we
2237 * know that an unsigned int will always hold the value so we blindly
2238 * typecast to this type
2240 data->set.scope = curlx_sltoui(va_arg(param, long));
2243 case CURLOPT_PROTOCOLS:
2244 /* set the bitmask for the protocols that are allowed to be used for the
2245 transfer, which thus helps the app which takes URLs from users or other
2246 external inputs and want to restrict what protocol(s) to deal
2247 with. Defaults to CURLPROTO_ALL. */
2248 data->set.allowed_protocols = va_arg(param, long);
2251 case CURLOPT_REDIR_PROTOCOLS:
2252 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2253 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2254 to be set in both bitmasks to be allowed to get redirected to. Defaults
2255 to all protocols except FILE and SCP. */
2256 data->set.redir_protocols = va_arg(param, long);
2259 case CURLOPT_MAIL_FROM:
2260 /* Set the SMTP mail originator */
2261 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2262 va_arg(param, char *));
2265 case CURLOPT_MAIL_AUTH:
2266 /* Set the SMTP auth originator */
2267 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2268 va_arg(param, char *));
2271 case CURLOPT_MAIL_RCPT:
2272 /* Set the list of mail recipients */
2273 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2276 case CURLOPT_SASL_IR:
2277 /* Enable/disable SASL initial response */
2278 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2281 case CURLOPT_RTSP_REQUEST:
2284 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2285 * Would this be better if the RTSPREQ_* were just moved into here?
2287 long curl_rtspreq = va_arg(param, long);
2288 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2289 switch(curl_rtspreq) {
2290 case CURL_RTSPREQ_OPTIONS:
2291 rtspreq = RTSPREQ_OPTIONS;
2294 case CURL_RTSPREQ_DESCRIBE:
2295 rtspreq = RTSPREQ_DESCRIBE;
2298 case CURL_RTSPREQ_ANNOUNCE:
2299 rtspreq = RTSPREQ_ANNOUNCE;
2302 case CURL_RTSPREQ_SETUP:
2303 rtspreq = RTSPREQ_SETUP;
2306 case CURL_RTSPREQ_PLAY:
2307 rtspreq = RTSPREQ_PLAY;
2310 case CURL_RTSPREQ_PAUSE:
2311 rtspreq = RTSPREQ_PAUSE;
2314 case CURL_RTSPREQ_TEARDOWN:
2315 rtspreq = RTSPREQ_TEARDOWN;
2318 case CURL_RTSPREQ_GET_PARAMETER:
2319 rtspreq = RTSPREQ_GET_PARAMETER;
2322 case CURL_RTSPREQ_SET_PARAMETER:
2323 rtspreq = RTSPREQ_SET_PARAMETER;
2326 case CURL_RTSPREQ_RECORD:
2327 rtspreq = RTSPREQ_RECORD;
2330 case CURL_RTSPREQ_RECEIVE:
2331 rtspreq = RTSPREQ_RECEIVE;
2334 rtspreq = RTSPREQ_NONE;
2337 data->set.rtspreq = rtspreq;
2342 case CURLOPT_RTSP_SESSION_ID:
2344 * Set the RTSP Session ID manually. Useful if the application is
2345 * resuming a previously established RTSP session
2347 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2348 va_arg(param, char *));
2351 case CURLOPT_RTSP_STREAM_URI:
2353 * Set the Stream URI for the RTSP request. Unless the request is
2354 * for generic server options, the application will need to set this.
2356 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2357 va_arg(param, char *));
2360 case CURLOPT_RTSP_TRANSPORT:
2362 * The content of the Transport: header for the RTSP request
2364 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2365 va_arg(param, char *));
2368 case CURLOPT_RTSP_CLIENT_CSEQ:
2370 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2371 * application is resuming a previously broken connection. The CSEQ
2372 * will increment from this new number henceforth.
2374 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2377 case CURLOPT_RTSP_SERVER_CSEQ:
2378 /* Same as the above, but for server-initiated requests */
2379 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2382 case CURLOPT_INTERLEAVEDATA:
2383 data->set.rtp_out = va_arg(param, void *);
2385 case CURLOPT_INTERLEAVEFUNCTION:
2386 /* Set the user defined RTP write function */
2387 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2390 case CURLOPT_WILDCARDMATCH:
2391 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2393 case CURLOPT_CHUNK_BGN_FUNCTION:
2394 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2396 case CURLOPT_CHUNK_END_FUNCTION:
2397 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2399 case CURLOPT_FNMATCH_FUNCTION:
2400 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2402 case CURLOPT_CHUNK_DATA:
2403 data->wildcard.customptr = va_arg(param, void *);
2405 case CURLOPT_FNMATCH_DATA:
2406 data->set.fnmatch_data = va_arg(param, void *);
2409 case CURLOPT_TLSAUTH_USERNAME:
2410 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2411 va_arg(param, char *));
2412 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2413 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2415 case CURLOPT_TLSAUTH_PASSWORD:
2416 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2417 va_arg(param, char *));
2418 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2419 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2421 case CURLOPT_TLSAUTH_TYPE:
2422 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2423 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2425 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2428 case CURLOPT_DNS_SERVERS:
2429 result = Curl_set_dns_servers(data, va_arg(param, char *));
2432 case CURLOPT_TCP_KEEPALIVE:
2433 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2435 case CURLOPT_TCP_KEEPIDLE:
2436 data->set.tcp_keepidle = va_arg(param, long);
2438 case CURLOPT_TCP_KEEPINTVL:
2439 data->set.tcp_keepintvl = va_arg(param, long);
2443 /* unknown tag and its companion, just ignore: */
2444 result = CURLE_UNKNOWN_OPTION;
2451 static void conn_free(struct connectdata *conn)
2456 /* possible left-overs from the async name resolvers */
2457 Curl_resolver_cancel(conn);
2459 /* close the SSL stuff before we close any sockets since they will/may
2460 write to the sockets */
2461 Curl_ssl_close(conn, FIRSTSOCKET);
2462 Curl_ssl_close(conn, SECONDARYSOCKET);
2464 /* close possibly still open sockets */
2465 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2466 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2467 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2468 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2470 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2471 Curl_ntlm_wb_cleanup(conn);
2474 Curl_safefree(conn->user);
2475 Curl_safefree(conn->passwd);
2476 Curl_safefree(conn->options);
2477 Curl_safefree(conn->proxyuser);
2478 Curl_safefree(conn->proxypasswd);
2479 Curl_safefree(conn->allocptr.proxyuserpwd);
2480 Curl_safefree(conn->allocptr.uagent);
2481 Curl_safefree(conn->allocptr.userpwd);
2482 Curl_safefree(conn->allocptr.accept_encoding);
2483 Curl_safefree(conn->allocptr.te);
2484 Curl_safefree(conn->allocptr.rangeline);
2485 Curl_safefree(conn->allocptr.ref);
2486 Curl_safefree(conn->allocptr.host);
2487 Curl_safefree(conn->allocptr.cookiehost);
2488 Curl_safefree(conn->allocptr.rtsp_transport);
2489 Curl_safefree(conn->trailer);
2490 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2491 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2492 Curl_safefree(conn->master_buffer);
2494 Curl_llist_destroy(conn->send_pipe, NULL);
2495 Curl_llist_destroy(conn->recv_pipe, NULL);
2497 conn->send_pipe = NULL;
2498 conn->recv_pipe = NULL;
2500 Curl_safefree(conn->localdev);
2501 Curl_free_ssl_config(&conn->ssl_config);
2503 free(conn); /* free all the connection oriented data */
2506 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2508 struct SessionHandle *data;
2510 return CURLE_OK; /* this is closed and fine already */
2514 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2518 if(conn->dns_entry != NULL) {
2519 Curl_resolv_unlock(data, conn->dns_entry);
2520 conn->dns_entry = NULL;
2523 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2526 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2527 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2529 /* Authentication data is a mix of connection-related and sessionhandle-
2530 related stuff. NTLM is connection-related so when we close the shop
2534 data->state.authhost.done = FALSE;
2535 data->state.authhost.picked =
2536 data->state.authhost.want;
2539 if(has_proxy_ntlm) {
2540 data->state.authproxy.done = FALSE;
2541 data->state.authproxy.picked =
2542 data->state.authproxy.want;
2545 if(has_host_ntlm || has_proxy_ntlm)
2546 data->state.authproblem = FALSE;
2549 /* Cleanup NTLM connection-related data */
2550 Curl_http_ntlm_cleanup(conn);
2552 /* Cleanup possible redirect junk */
2553 if(data->req.newurl) {
2554 free(data->req.newurl);
2555 data->req.newurl = NULL;
2558 if(conn->handler->disconnect)
2559 /* This is set if protocol-specific cleanups should be made */
2560 conn->handler->disconnect(conn, dead_connection);
2562 /* unlink ourselves! */
2563 infof(data, "Closing connection %d\n", conn->connection_id);
2564 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2566 #if defined(USE_LIBIDN)
2567 if(conn->host.encalloc)
2568 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2569 with idn_free() since this was allocated
2571 if(conn->proxy.encalloc)
2572 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2573 freed with idn_free() since this was
2574 allocated by libidn */
2575 #elif defined(USE_WIN32_IDN)
2576 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2577 idn_free() since this was allocated by
2578 curl_win32_idn_to_ascii */
2579 if(conn->proxy.encalloc)
2580 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2581 with idn_free() since this was allocated by
2582 curl_win32_idn_to_ascii */
2585 Curl_ssl_close(conn, FIRSTSOCKET);
2587 /* Indicate to all handles on the pipe that we're dead */
2588 if(Curl_multi_pipeline_enabled(data->multi)) {
2589 signalPipeClose(conn->send_pipe, TRUE);
2590 signalPipeClose(conn->recv_pipe, TRUE);
2594 data->state.current_conn = NULL;
2595 Curl_speedinit(data);
2601 * This function should return TRUE if the socket is to be assumed to
2602 * be dead. Most commonly this happens when the server has closed the
2603 * connection due to inactivity.
2605 static bool SocketIsDead(curl_socket_t sock)
2608 bool ret_val = TRUE;
2610 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2618 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2619 const struct connectdata *conn)
2621 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2622 Curl_multi_pipeline_enabled(handle->multi) &&
2623 (handle->set.httpreq == HTTPREQ_GET ||
2624 handle->set.httpreq == HTTPREQ_HEAD) &&
2625 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2631 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2633 return Curl_multi_pipeline_enabled(handle->multi);
2636 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2637 struct curl_llist *pipeline)
2639 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2640 return CURLE_OUT_OF_MEMORY;
2641 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2645 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2646 struct curl_llist *pipeline)
2648 struct curl_llist_element *curr;
2650 curr = pipeline->head;
2652 if(curr->ptr == handle) {
2653 Curl_llist_remove(pipeline, curr, NULL);
2654 return 1; /* we removed a handle */
2662 #if 0 /* this code is saved here as it is useful for debugging purposes */
2663 static void Curl_printPipeline(struct curl_llist *pipeline)
2665 struct curl_llist_element *curr;
2667 curr = pipeline->head;
2669 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2670 infof(data, "Handle in pipeline: %s\n", data->state.path);
2676 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2678 struct curl_llist_element *curr = pipeline->head;
2680 return (struct SessionHandle *) curr->ptr;
2686 /* remove the specified connection from all (possible) pipelines and related
2688 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2689 struct connectdata *conn)
2691 bool recv_head = (conn->readchannel_inuse &&
2692 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2694 bool send_head = (conn->writechannel_inuse &&
2695 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2697 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2698 conn->readchannel_inuse = FALSE;
2699 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2700 conn->writechannel_inuse = FALSE;
2703 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2705 struct curl_llist_element *curr;
2710 curr = pipeline->head;
2712 struct curl_llist_element *next = curr->next;
2713 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2715 #ifdef DEBUGBUILD /* debug-only code */
2716 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2718 infof(data, "signalPipeClose() found BAAD easy handle\n");
2723 data->state.pipe_broke = TRUE;
2724 Curl_multi_handlePipeBreak(data);
2725 Curl_llist_remove(pipeline, curr, NULL);
2731 * This function finds the connection in the connection
2732 * cache that has been unused for the longest time.
2734 * Returns the pointer to the oldest idle connection, or NULL if none was
2737 static struct connectdata *
2738 find_oldest_idle_connection(struct SessionHandle *data)
2740 struct conncache *bc = data->state.conn_cache;
2741 struct curl_hash_iterator iter;
2742 struct curl_llist_element *curr;
2743 struct curl_hash_element *he;
2747 struct connectdata *conn_candidate = NULL;
2748 struct connectbundle *bundle;
2752 Curl_hash_start_iterate(bc->hash, &iter);
2754 he = Curl_hash_next_element(&iter);
2756 struct connectdata *conn;
2760 curr = bundle->conn_list->head;
2765 /* Set higher score for the age passed since the connection was used */
2766 score = Curl_tvdiff(now, conn->now);
2768 if(score > highscore) {
2770 conn_candidate = conn;
2776 he = Curl_hash_next_element(&iter);
2779 return conn_candidate;
2783 * This function finds the connection in the connection
2784 * bundle that has been unused for the longest time.
2786 * Returns the pointer to the oldest idle connection, or NULL if none was
2789 static struct connectdata *
2790 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2791 struct connectbundle *bundle)
2793 struct curl_llist_element *curr;
2797 struct connectdata *conn_candidate = NULL;
2798 struct connectdata *conn;
2804 curr = bundle->conn_list->head;
2809 /* Set higher score for the age passed since the connection was used */
2810 score = Curl_tvdiff(now, conn->now);
2812 if(score > highscore) {
2814 conn_candidate = conn;
2820 return conn_candidate;
2824 * Given one filled in connection struct (named needle), this function should
2825 * detect if there already is one that has all the significant details
2826 * exactly the same and thus should be used instead.
2828 * If there is a match, this function returns TRUE - and has marked the
2829 * connection as 'in-use'. It must later be called with ConnectionDone() to
2830 * return back to 'idle' (unused) state.
2832 * The force_reuse flag is set if the connection must be used, even if
2833 * the pipelining strategy wants to open a new connection instead of reusing.
2836 ConnectionExists(struct SessionHandle *data,
2837 struct connectdata *needle,
2838 struct connectdata **usethis,
2841 struct connectdata *check;
2842 struct connectdata *chosen = 0;
2843 bool canPipeline = IsPipeliningPossible(data, needle);
2844 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2845 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2846 struct connectbundle *bundle;
2848 *force_reuse = FALSE;
2850 /* We can't pipe if the site is blacklisted */
2851 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2852 canPipeline = FALSE;
2855 /* Look up the bundle with all the connections to this
2857 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2860 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2861 size_t best_pipe_len = max_pipe_len;
2862 struct curl_llist_element *curr;
2864 infof(data, "Found bundle for host %s: %p\n", needle->host.name, bundle);
2866 /* We can't pipe if we don't know anything about the server */
2867 if(canPipeline && !bundle->server_supports_pipelining) {
2868 infof(data, "Server doesn't support pipelining\n");
2869 canPipeline = FALSE;
2872 curr = bundle->conn_list->head;
2875 bool credentialsMatch = FALSE;
2879 * Note that if we use a HTTP proxy, we check connections to that
2880 * proxy and not to the actual remote server.
2885 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2887 if(!pipeLen && !check->inuse) {
2888 /* The check for a dead socket makes sense only if there are no
2889 handles in pipeline and the connection isn't already marked in
2892 if(check->handler->protocol & CURLPROTO_RTSP)
2893 /* RTSP is a special case due to RTP interleaving */
2894 dead = Curl_rtsp_connisdead(check);
2896 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2900 infof(data, "Connection %d seems to be dead!\n",
2901 check->connection_id);
2903 /* disconnect resources */
2904 Curl_disconnect(check, /* dead_connection */ TRUE);
2910 /* Make sure the pipe has only GET requests */
2911 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2912 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2914 if(!IsPipeliningPossible(sh, check))
2918 if(!IsPipeliningPossible(rh, check))
2924 /* can only happen within multi handles, and means that another easy
2925 handle is using this connection */
2929 if(Curl_resolver_asynch()) {
2930 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2931 completed yet and until then we don't re-use this connection */
2932 if(!check->ip_addr_str[0]) {
2934 "Connection #%ld is still name resolving, can't reuse\n",
2935 check->connection_id);
2940 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2941 check->bits.close) {
2942 /* Don't pick a connection that hasn't connected yet or that is going
2944 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2945 check->connection_id);
2947 if(check->recv_pipe->size > 0) {
2949 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2950 check->connection_id);
2957 if((needle->handler->flags&PROTOPT_SSL) !=
2958 (check->handler->flags&PROTOPT_SSL))
2959 /* don't do mixed SSL and non-SSL connections */
2960 if(!(needle->handler->protocol & check->handler->protocol))
2961 /* except protocols that have been upgraded via TLS */
2964 if(needle->handler->flags&PROTOPT_SSL) {
2965 if((data->set.ssl.verifypeer != check->verifypeer) ||
2966 (data->set.ssl.verifyhost != check->verifyhost))
2970 if(needle->bits.proxy != check->bits.proxy)
2971 /* don't do mixed proxy and non-proxy connections */
2974 if(!canPipeline && check->inuse)
2975 /* this request can't be pipelined but the checked connection is
2976 already in use so we skip it */
2979 if(needle->localdev || needle->localport) {
2980 /* If we are bound to a specific local end (IP+port), we must not
2981 re-use a random other one, although if we didn't ask for a
2982 particular one we can reuse one that was bound.
2984 This comparison is a bit rough and too strict. Since the input
2985 parameters can be specified in numerous ways and still end up the
2986 same it would take a lot of processing to make it really accurate.
2987 Instead, this matching will assume that re-uses of bound connections
2988 will most likely also re-use the exact same binding parameters and
2989 missing out a few edge cases shouldn't hurt anyone very much.
2991 if((check->localport != needle->localport) ||
2992 (check->localportrange != needle->localportrange) ||
2994 !needle->localdev ||
2995 strcmp(check->localdev, needle->localdev))
2999 if((needle->handler->protocol & CURLPROTO_FTP) ||
3000 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3001 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3002 and password as well */
3003 if(!strequal(needle->user, check->user) ||
3004 !strequal(needle->passwd, check->passwd)) {
3005 /* one of them was different */
3008 credentialsMatch = TRUE;
3011 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3012 (needle->bits.httpproxy && check->bits.httpproxy &&
3013 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3014 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3015 (needle->port == check->port))) {
3016 /* The requested connection does not use a HTTP proxy or it uses SSL or
3017 it is a non-SSL protocol tunneled over the same http proxy name and
3018 port number or it is a non-SSL protocol which is allowed to be
3021 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3022 needle->handler->protocol & check->handler->protocol) &&
3023 Curl_raw_equal(needle->host.name, check->host.name) &&
3024 needle->remote_port == check->remote_port) {
3025 if(needle->handler->flags & PROTOPT_SSL) {
3026 /* This is a SSL connection so verify that we're using the same
3027 SSL options as well */
3028 if(!Curl_ssl_config_matches(&needle->ssl_config,
3029 &check->ssl_config)) {
3031 "Connection #%ld has different SSL parameters, "
3033 check->connection_id));
3036 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3038 "Connection #%ld has not started SSL connect, "
3040 check->connection_id));
3047 else { /* The requested needle connection is using a proxy,
3048 is the checked one using the same host, port and type? */
3049 if(check->bits.proxy &&
3050 (needle->proxytype == check->proxytype) &&
3051 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3052 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3053 needle->port == check->port) {
3054 /* This is the same proxy connection, use it! */
3060 /* If we are looking for an NTLM connection, check if this is already
3061 authenticating with the right credentials. If not, keep looking so
3062 that we can reuse NTLM connections if possible. (Especially we
3063 must not reuse the same connection if partway through
3066 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3069 /* We must use this connection, no other */
3070 *force_reuse = TRUE;
3078 /* We can pipeline if we want to. Let's continue looking for
3079 the optimal connection to use, i.e the shortest pipe that is not
3083 /* We have the optimal connection. Let's stop looking. */
3088 /* We can't use the connection if the pipe is full */
3089 if(pipeLen >= max_pipe_len)
3092 /* We can't use the connection if the pipe is penalized */
3093 if(Curl_pipeline_penalized(data, check))
3096 if(pipeLen < best_pipe_len) {
3097 /* This connection has a shorter pipe so far. We'll pick this
3098 and continue searching */
3100 best_pipe_len = pipeLen;
3105 /* We have found a connection. Let's stop searching. */
3115 return TRUE; /* yes, we found one to use! */
3118 return FALSE; /* no matching connecting exists */
3121 /* Mark the connection as 'idle', or close it if the cache is full.
3122 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3124 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3126 /* data->multi->maxconnects can be negative, deal with it. */
3127 size_t maxconnects =
3128 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3129 struct connectdata *conn_candidate = NULL;
3131 /* Mark the current connection as 'unused' */
3132 conn->inuse = FALSE;
3134 if(maxconnects > 0 &&
3135 data->state.conn_cache->num_connections > maxconnects) {
3136 infof(data, "Connection cache is full, closing the oldest one.\n");
3138 conn_candidate = find_oldest_idle_connection(data);
3140 if(conn_candidate) {
3141 /* Set the connection's owner correctly */
3142 conn_candidate->data = data;
3144 /* the winner gets the honour of being disconnected */
3145 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3149 return (conn_candidate == conn) ? FALSE : TRUE;
3153 * The given input connection struct pointer is to be stored in the connection
3154 * cache. If the cache is already full, least interesting existing connection
3155 * (if any) gets closed.
3157 * The given connection should be unique. That must've been checked prior to
3160 static CURLcode ConnectionStore(struct SessionHandle *data,
3161 struct connectdata *conn)
3163 static int connection_id_counter = 0;
3167 /* Assign a number to the connection for easier tracking in the log
3169 conn->connection_id = connection_id_counter++;
3171 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3172 if(result != CURLE_OK)
3173 conn->connection_id = -1;
3178 /* after a TCP connection to the proxy has been verified, this function does
3179 the next magic step.
3181 Note: this function's sub-functions call failf()
3184 CURLcode Curl_connected_proxy(struct connectdata *conn)
3186 if(!conn->bits.proxy)
3189 switch(conn->proxytype) {
3190 #ifndef CURL_DISABLE_PROXY
3191 case CURLPROXY_SOCKS5:
3192 case CURLPROXY_SOCKS5_HOSTNAME:
3193 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3194 conn->host.name, conn->remote_port,
3197 case CURLPROXY_SOCKS4:
3198 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3199 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3201 case CURLPROXY_SOCKS4A:
3202 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3203 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3205 #endif /* CURL_DISABLE_PROXY */
3206 case CURLPROXY_HTTP:
3207 case CURLPROXY_HTTP_1_0:
3208 /* do nothing here. handled later. */
3212 } /* switch proxytype */
3217 static CURLcode ConnectPlease(struct SessionHandle *data,
3218 struct connectdata *conn,
3222 Curl_addrinfo *addr;
3223 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3224 char *hostname = conn->bits.proxy?conn->proxy.name:conn->host.name;
3226 infof(data, "About to connect() to %s%s port %ld (#%ld)\n",
3227 conn->bits.proxy?"proxy ":"",
3228 hostname, conn->port, conn->connection_id);
3233 /*************************************************************
3234 * Connect to server/proxy
3235 *************************************************************/
3236 result= Curl_connecthost(conn,
3238 &conn->sock[FIRSTSOCKET],
3241 if(CURLE_OK == result) {
3242 /* All is cool, we store the current information */
3243 conn->ip_addr = addr;
3246 result = Curl_connected_proxy(conn);
3248 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
3249 Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
3255 *connected = FALSE; /* mark it as not connected */
3261 * verboseconnect() displays verbose information after a connect
3263 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3264 void Curl_verboseconnect(struct connectdata *conn)
3266 if(conn->data->set.verbose)
3267 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3268 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3269 conn->ip_addr_str, conn->port, conn->connection_id);
3273 int Curl_protocol_getsock(struct connectdata *conn,
3274 curl_socket_t *socks,
3277 if(conn->handler->proto_getsock)
3278 return conn->handler->proto_getsock(conn, socks, numsocks);
3279 return GETSOCK_BLANK;
3282 int Curl_doing_getsock(struct connectdata *conn,
3283 curl_socket_t *socks,
3286 if(conn && conn->handler->doing_getsock)
3287 return conn->handler->doing_getsock(conn, socks, numsocks);
3288 return GETSOCK_BLANK;
3292 * We are doing protocol-specific connecting and this is being called over and
3293 * over from the multi interface until the connection phase is done on
3297 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3300 CURLcode result=CURLE_OK;
3302 if(conn && conn->handler->connecting) {
3304 result = conn->handler->connecting(conn, done);
3313 * We are DOING this is being called over and over from the multi interface
3314 * until the DOING phase is done on protocol layer.
3317 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3319 CURLcode result=CURLE_OK;
3321 if(conn && conn->handler->doing) {
3323 result = conn->handler->doing(conn, done);
3332 * We have discovered that the TCP connection has been successful, we can now
3333 * proceed with some action.
3336 CURLcode Curl_protocol_connect(struct connectdata *conn,
3337 bool *protocol_done)
3339 CURLcode result=CURLE_OK;
3341 *protocol_done = FALSE;
3343 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3344 /* We already are connected, get back. This may happen when the connect
3345 worked fine in the first call, like when we connect to a local server
3346 or proxy. Note that we don't know if the protocol is actually done.
3348 Unless this protocol doesn't have any protocol-connect callback, as
3349 then we know we're done. */
3350 if(!conn->handler->connecting)
3351 *protocol_done = TRUE;
3356 if(!conn->bits.protoconnstart) {
3358 result = Curl_proxy_connect(conn);
3362 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3363 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3364 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3365 before proceeding further. Return CURLE_OK so we'll be called again */
3368 if(conn->handler->connect_it) {
3369 /* is there a protocol-specific connect() procedure? */
3371 /* Call the protocol-specific connect function */
3372 result = conn->handler->connect_it(conn, protocol_done);
3375 *protocol_done = TRUE;
3377 /* it has started, possibly even completed but that knowledge isn't stored
3380 conn->bits.protoconnstart = TRUE;
3383 return result; /* pass back status */
3387 * Helpers for IDNA convertions.
3389 static bool is_ASCII_name(const char *hostname)
3391 const unsigned char *ch = (const unsigned char*)hostname;
3402 * Check if characters in hostname is allowed in Top Level Domain.
3404 static bool tld_check_name(struct SessionHandle *data,
3405 const char *ace_hostname)
3408 char *uc_name = NULL;
3410 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3411 const char *tld_errmsg = "<no msg>";
3416 /* Convert (and downcase) ACE-name back into locale's character set */
3417 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3418 if(rc != IDNA_SUCCESS)
3421 rc = tld_check_lz(uc_name, &err_pos, NULL);
3422 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3423 #ifdef HAVE_TLD_STRERROR
3424 if(rc != TLD_SUCCESS)
3425 tld_errmsg = tld_strerror((Tld_rc)rc);
3427 if(rc == TLD_INVALID)
3428 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3429 tld_errmsg, err_pos, uc_name[err_pos],
3430 uc_name[err_pos] & 255);
3431 else if(rc != TLD_SUCCESS)
3432 infof(data, "WARNING: TLD check for %s failed; %s\n",
3433 uc_name, tld_errmsg);
3434 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3437 if(rc != TLD_SUCCESS)
3445 * Perform any necessary IDN conversion of hostname
3447 static void fix_hostname(struct SessionHandle *data,
3448 struct connectdata *conn, struct hostname *host)
3453 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3457 /* set the name we use to display the host name */
3458 host->dispname = host->name;
3459 if(!is_ASCII_name(host->name)) {
3461 /*************************************************************
3462 * Check name for non-ASCII and convert hostname to ACE form.
3463 *************************************************************/
3464 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3465 char *ace_hostname = NULL;
3466 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3467 infof (data, "Input domain encoded as `%s'\n",
3468 stringprep_locale_charset ());
3469 if(rc != IDNA_SUCCESS)
3470 infof(data, "Failed to convert %s to ACE; %s\n",
3471 host->name, Curl_idn_strerror(conn,rc));
3473 /* tld_check_name() displays a warning if the host name contains
3474 "illegal" characters for this TLD */
3475 (void)tld_check_name(data, ace_hostname);
3477 host->encalloc = ace_hostname;
3478 /* change the name pointer to point to the encoded hostname */
3479 host->name = host->encalloc;
3482 #elif defined(USE_WIN32_IDN)
3483 /*************************************************************
3484 * Check name for non-ASCII and convert hostname to ACE form.
3485 *************************************************************/
3486 char *ace_hostname = NULL;
3487 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3489 infof(data, "Failed to convert %s to ACE;\n",
3492 host->encalloc = ace_hostname;
3493 /* change the name pointer to point to the encoded hostname */
3494 host->name = host->encalloc;
3497 infof(data, "IDN support not present, can't parse Unicode domains\n");
3502 static void llist_dtor(void *user, void *element)
3510 * Allocate and initialize a new connectdata object.
3512 static struct connectdata *allocate_conn(struct SessionHandle *data)
3514 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3518 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3519 already from start to avoid NULL
3520 situations and checks */
3522 /* and we setup a few fields in case we end up actually using this struct */
3524 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3525 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3526 conn->connection_id = -1; /* no ID */
3527 conn->port = -1; /* unknown at this point */
3529 /* Default protocol-independent behavior doesn't support persistent
3530 connections, so we set this to force-close. Protocols that support
3531 this need to set this to FALSE in their "curl_do" functions. */
3532 conn->bits.close = TRUE;
3534 /* Store creation time to help future close decision making */
3535 conn->created = Curl_tvnow();
3537 conn->data = data; /* Setup the association between this connection
3538 and the SessionHandle */
3540 conn->proxytype = data->set.proxytype; /* type */
3542 #ifdef CURL_DISABLE_PROXY
3544 conn->bits.proxy = FALSE;
3545 conn->bits.httpproxy = FALSE;
3546 conn->bits.proxy_user_passwd = FALSE;
3547 conn->bits.tunnel_proxy = FALSE;
3549 #else /* CURL_DISABLE_PROXY */
3551 /* note that these two proxy bits are now just on what looks to be
3552 requested, they may be altered down the road */
3553 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3554 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3555 conn->bits.httpproxy = (conn->bits.proxy &&
3556 (conn->proxytype == CURLPROXY_HTTP ||
3557 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3558 conn->bits.proxy_user_passwd =
3559 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3560 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3562 #endif /* CURL_DISABLE_PROXY */
3564 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3565 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3566 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3568 conn->verifypeer = data->set.ssl.verifypeer;
3569 conn->verifyhost = data->set.ssl.verifyhost;
3571 conn->ip_version = data->set.ipver;
3573 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3574 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3575 conn->ntlm_auth_hlpr_pid = 0;
3576 conn->challenge_header = NULL;
3577 conn->response_header = NULL;
3580 if(Curl_multi_pipeline_enabled(data->multi) &&
3581 !conn->master_buffer) {
3582 /* Allocate master_buffer to be used for pipelining */
3583 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3584 if(!conn->master_buffer)
3588 /* Initialize the pipeline lists */
3589 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3590 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3591 if(!conn->send_pipe || !conn->recv_pipe)
3594 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
3595 conn->data_prot = PROT_CLEAR;
3598 /* Store the local bind parameters that will be used for this connection */
3599 if(data->set.str[STRING_DEVICE]) {
3600 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3604 conn->localportrange = data->set.localportrange;
3605 conn->localport = data->set.localport;
3607 /* the close socket stuff needs to be copied to the connection struct as
3608 it may live on without (this specific) SessionHandle */
3609 conn->fclosesocket = data->set.fclosesocket;
3610 conn->closesocket_client = data->set.closesocket_client;
3615 Curl_llist_destroy(conn->send_pipe, NULL);
3616 Curl_llist_destroy(conn->recv_pipe, NULL);
3618 conn->send_pipe = NULL;
3619 conn->recv_pipe = NULL;
3621 Curl_safefree(conn->master_buffer);
3622 Curl_safefree(conn->localdev);
3623 Curl_safefree(conn);
3627 static CURLcode findprotocol(struct SessionHandle *data,
3628 struct connectdata *conn,
3629 const char *protostr)
3631 const struct Curl_handler * const *pp;
3632 const struct Curl_handler *p;
3634 /* Scan protocol handler table and match against 'protostr' to set a few
3635 variables based on the URL. Now that the handler may be changed later
3636 when the protocol specific setup function is called. */
3637 for(pp = protocols; (p = *pp) != NULL; pp++) {
3638 if(Curl_raw_equal(p->scheme, protostr)) {
3639 /* Protocol found in table. Check if allowed */
3640 if(!(data->set.allowed_protocols & p->protocol))
3644 /* it is allowed for "normal" request, now do an extra check if this is
3645 the result of a redirect */
3646 if(data->state.this_is_a_follow &&
3647 !(data->set.redir_protocols & p->protocol))
3651 /* Perform setup complement if some. */
3652 conn->handler = conn->given = p;
3654 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3660 /* The protocol was not found in the table, but we don't have to assign it
3661 to anything since it is already assigned to a dummy-struct in the
3662 create_conn() function when the connectdata struct is allocated. */
3663 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3666 return CURLE_UNSUPPORTED_PROTOCOL;
3670 * Parse URL and fill in the relevant members of the connection struct.
3672 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3673 struct connectdata *conn,
3675 char *user, char *passwd, char *options)
3679 char *path = data->state.path;
3685 bool rebuild_url = FALSE;
3687 *prot_missing = FALSE;
3689 /*************************************************************
3692 * We need to parse the url even when using the proxy, because we will need
3693 * the hostname and port in case we are trying to SSL connect through the
3694 * proxy -- and we don't know if we will need to use SSL until we parse the
3696 ************************************************************/
3697 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3699 Curl_raw_equal(protobuf, "file")) {
3700 if(path[0] == '/' && path[1] == '/') {
3701 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3702 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3703 * file://localhost/<path> is similar to how other schemes treat missing
3704 * hostnames. See RFC 1808. */
3706 /* This cannot be done with strcpy() in a portable manner, since the
3707 memory areas overlap! */
3708 memmove(path, path + 2, strlen(path + 2)+1);
3711 * we deal with file://<host>/<path> differently since it supports no
3712 * hostname other than "localhost" and "127.0.0.1", which is unique among
3713 * the URL protocols specified in RFC 1738
3715 if(path[0] != '/') {
3716 /* the URL included a host name, we ignore host names in file:// URLs
3717 as the standards don't define what to do with them */
3718 char *ptr=strchr(path, '/');
3720 /* there was a slash present
3722 RFC1738 (section 3.1, page 5) says:
3724 The rest of the locator consists of data specific to the scheme,
3725 and is known as the "url-path". It supplies the details of how the
3726 specified resource can be accessed. Note that the "/" between the
3727 host (or port) and the url-path is NOT part of the url-path.
3729 As most agents use file://localhost/foo to get '/foo' although the
3730 slash preceding foo is a separator and not a slash for the path,
3731 a URL as file://localhost//foo must be valid as well, to refer to
3732 the same file with an absolute path.
3735 if(ptr[1] && ('/' == ptr[1]))
3736 /* if there was two slashes, we skip the first one as that is then
3737 used truly as a separator */
3740 /* This cannot be made with strcpy, as the memory chunks overlap! */
3741 memmove(path, ptr, strlen(ptr)+1);
3745 protop = "file"; /* protocol string */
3751 if(2 > sscanf(data->change.url,
3752 "%15[^\n:]://%[^\n/?]%[^\n]",
3754 conn->host.name, path)) {
3757 * The URL was badly formatted, let's try the browser-style _without_
3758 * protocol specified like 'http://'.
3760 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3763 * We couldn't even get this format.
3764 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3765 * assigned, but the return value is EOF!
3767 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3768 if(!(rc == -1 && *conn->host.name))
3771 failf(data, "<url> malformed");
3772 return CURLE_URL_MALFORMAT;
3777 * Since there was no protocol part specified, we guess what protocol it
3778 * is based on the first letters of the server name.
3781 /* Note: if you add a new protocol, please update the list in
3782 * lib/version.c too! */
3784 if(checkprefix("FTP.", conn->host.name))
3786 else if(checkprefix("DICT.", conn->host.name))
3788 else if(checkprefix("LDAP.", conn->host.name))
3790 else if(checkprefix("IMAP.", conn->host.name))
3792 else if(checkprefix("SMTP.", conn->host.name))
3794 else if(checkprefix("POP3.", conn->host.name))
3800 *prot_missing = TRUE; /* not given in URL */
3806 /* We search for '?' in the host name (but only on the right side of a
3807 * @-letter to allow ?-letters in username and password) to handle things
3808 * like http://example.com?param= (notice the missing '/').
3810 at = strchr(conn->host.name, '@');
3812 query = strchr(at+1, '?');
3814 query = strchr(conn->host.name, '?');
3817 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3818 a slash after the '?', that is where the path currently begins and the
3819 '?string' is still part of the host name.
3821 We must move the trailing part from the host name and put it first in
3822 the path. And have it all prefixed with a slash.
3825 size_t hostlen = strlen(query);
3826 size_t pathlen = strlen(path);
3828 /* move the existing path plus the zero byte forward, to make room for
3829 the host-name part */
3830 memmove(path+hostlen+1, path, pathlen+1);
3832 /* now copy the trailing host part in front of the existing path */
3833 memcpy(path+1, query, hostlen);
3835 path[0]='/'; /* prepend the missing slash */
3838 *query=0; /* now cut off the hostname at the ? */
3841 /* if there's no path set, use a single slash */
3846 /* If the URL is malformatted (missing a '/' after hostname before path) we
3847 * insert a slash here. The only letter except '/' we accept to start a path
3850 if(path[0] == '?') {
3851 /* We need this function to deal with overlapping memory areas. We know
3852 that the memory area 'path' points to is 'urllen' bytes big and that
3853 is bigger than the path. Use +1 to move the zero byte too. */
3854 memmove(&path[1], path, strlen(path)+1);
3859 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3860 char *newp = Curl_dedotdotify(path);
3862 if(strcmp(newp, path)) {
3864 free(data->state.pathbuffer);
3865 data->state.pathbuffer = newp;
3866 data->state.path = newp;
3874 * "rebuild_url" means that one or more URL components have been modified so
3875 * we need to generate an updated full version. We need the corrected URL
3876 * when communicating over HTTP proxy and we don't know at this point if
3877 * we're using a proxy or not.
3882 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3884 size_t urllen = strlen(data->change.url); /* original URL length */
3886 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3888 return CURLE_OUT_OF_MEMORY;
3890 /* copy the prefix */
3891 memcpy(reurl, data->change.url, urllen - (plen-1));
3893 /* append the trailing piece + zerobyte */
3894 memcpy(&reurl[urllen - (plen-1)], path, plen + 1);
3896 /* possible free the old one */
3897 if(data->change.url_alloc) {
3898 Curl_safefree(data->change.url);
3899 data->change.url_alloc = FALSE;
3902 infof(data, "Rebuilt URL to: %s\n", reurl);
3904 data->change.url = reurl;
3905 data->change.url_alloc = TRUE; /* free this later */
3909 * Parse the login details from the URL and strip them out of
3912 result = parse_url_login(data, conn, user, passwd, options);
3913 if(result != CURLE_OK)
3916 if(conn->host.name[0] == '[') {
3917 /* This looks like an IPv6 address literal. See if there is an address
3919 char *percent = strstr (conn->host.name, "%25");
3922 unsigned long scope = strtoul (percent + 3, &endp, 10);
3924 /* The address scope was well formed. Knock it out of the
3926 memmove(percent, endp, strlen(endp)+1);
3927 if(!data->state.this_is_a_follow)
3928 /* Don't honour a scope given in a Location: header */
3929 conn->scope = (unsigned int)scope;
3932 infof(data, "Invalid IPv6 address format\n");
3937 /* Override any scope that was set above. */
3938 conn->scope = data->set.scope;
3940 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3941 last part of the URI. We are looking for the first '#' so that we deal
3942 gracefully with non conformant URI such as http://example.com#foo#bar. */
3943 fragment = strchr(path, '#');
3947 /* we know the path part ended with a fragment, so we know the full URL
3948 string does too and we need to cut it off from there so it isn't used
3950 fragment = strchr(data->change.url, '#');
3956 * So if the URL was A://B/C#D,
3958 * conn->host.name is B
3959 * data->state.path is /C
3962 return findprotocol(data, conn, protop);
3966 * If we're doing a resumed transfer, we need to setup our stuff
3969 static CURLcode setup_range(struct SessionHandle *data)
3971 struct UrlState *s = &data->state;
3972 s->resume_from = data->set.set_resume_from;
3973 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3974 if(s->rangestringalloc)
3978 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
3980 s->range = strdup(data->set.str[STRING_SET_RANGE]);
3982 s->rangestringalloc = (s->range)?TRUE:FALSE;
3985 return CURLE_OUT_OF_MEMORY;
3987 /* tell ourselves to fetch this range */
3988 s->use_range = TRUE; /* enable range download */
3991 s->use_range = FALSE; /* disable range download */
3997 /***************************************************************
3998 * Setup connection internals specific to the requested protocol.
3999 * This MUST get called after proxy magic has been figured out.
4000 ***************************************************************/
4001 static CURLcode setup_connection_internals(struct connectdata *conn)
4003 const struct Curl_handler * p;
4006 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4008 /* Scan protocol handler table. */
4010 /* Perform setup complement if some. */
4013 if(p->setup_connection) {
4014 result = (*p->setup_connection)(conn);
4016 if(result != CURLE_OK)
4019 p = conn->handler; /* May have changed. */
4023 /* we check for -1 here since if proxy was detected already, this
4024 was very likely already set to the proxy port */
4025 conn->port = p->defport;
4026 conn->remote_port = (unsigned short)conn->given->defport;
4031 #ifndef CURL_DISABLE_PROXY
4032 /****************************************************************
4033 * Checks if the host is in the noproxy list. returns true if it matches
4034 * and therefore the proxy should NOT be used.
4035 ****************************************************************/
4036 static bool check_noproxy(const char* name, const char* no_proxy)
4038 /* no_proxy=domain1.dom,host.domain2.dom
4039 * (a comma-separated list of hosts which should
4040 * not be proxied, or an asterisk to override
4041 * all proxy variables)
4045 const char* separator = ", ";
4046 size_t no_proxy_len;
4050 if(no_proxy && no_proxy[0]) {
4051 if(Curl_raw_equal("*", no_proxy)) {
4055 /* NO_PROXY was specified and it wasn't just an asterisk */
4057 no_proxy_len = strlen(no_proxy);
4058 endptr = strchr(name, ':');
4060 namelen = endptr - name;
4062 namelen = strlen(name);
4064 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4065 while(tok_start < no_proxy_len &&
4066 strchr(separator, no_proxy[tok_start]) != NULL) {
4067 /* Look for the beginning of the token. */
4071 if(tok_start == no_proxy_len)
4072 break; /* It was all trailing separator chars, no more tokens. */
4074 for(tok_end = tok_start; tok_end < no_proxy_len &&
4075 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4076 /* Look for the end of the token. */
4079 /* To match previous behaviour, where it was necessary to specify
4080 * ".local.com" to prevent matching "notlocal.com", we will leave
4083 if(no_proxy[tok_start] == '.')
4086 if((tok_end - tok_start) <= namelen) {
4087 /* Match the last part of the name to the domain we are checking. */
4088 const char *checkn = name + namelen - (tok_end - tok_start);
4089 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4090 tok_end - tok_start)) {
4091 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4092 /* We either have an exact match, or the previous character is a .
4093 * so it is within the same domain, so no proxy for this host.
4098 } /* if((tok_end - tok_start) <= namelen) */
4099 } /* for(tok_start = 0; tok_start < no_proxy_len;
4100 tok_start = tok_end + 1) */
4101 } /* NO_PROXY was specified and it wasn't just an asterisk */
4106 /****************************************************************
4107 * Detect what (if any) proxy to use. Remember that this selects a host
4108 * name and is not limited to HTTP proxies only.
4109 * The returned pointer must be freed by the caller (unless NULL)
4110 ****************************************************************/
4111 static char *detect_proxy(struct connectdata *conn)
4115 #ifndef CURL_DISABLE_HTTP
4116 /* If proxy was not specified, we check for default proxy environment
4117 * variables, to enable i.e Lynx compliance:
4119 * http_proxy=http://some.server.dom:port/
4120 * https_proxy=http://some.server.dom:port/
4121 * ftp_proxy=http://some.server.dom:port/
4122 * no_proxy=domain1.dom,host.domain2.dom
4123 * (a comma-separated list of hosts which should
4124 * not be proxied, or an asterisk to override
4125 * all proxy variables)
4126 * all_proxy=http://some.server.dom:port/
4127 * (seems to exist for the CERN www lib. Probably
4128 * the first to check for.)
4130 * For compatibility, the all-uppercase versions of these variables are
4131 * checked if the lowercase versions don't exist.
4133 char *no_proxy=NULL;
4134 char proxy_env[128];
4136 no_proxy=curl_getenv("no_proxy");
4138 no_proxy=curl_getenv("NO_PROXY");
4140 if(!check_noproxy(conn->host.name, no_proxy)) {
4141 /* It was not listed as without proxy */
4142 const char *protop = conn->handler->scheme;
4143 char *envp = proxy_env;
4146 /* Now, build <protocol>_proxy and check for such a one to use */
4148 *envp++ = (char)tolower((int)*protop++);
4151 strcpy(envp, "_proxy");
4153 /* read the protocol proxy: */
4154 prox=curl_getenv(proxy_env);
4157 * We don't try the uppercase version of HTTP_PROXY because of
4160 * When curl is used in a webserver application
4161 * environment (cgi or php), this environment variable can
4162 * be controlled by the web server user by setting the
4163 * http header 'Proxy:' to some value.
4165 * This can cause 'internal' http/ftp requests to be
4166 * arbitrarily redirected by any external attacker.
4168 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4169 /* There was no lowercase variable, try the uppercase version: */
4170 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4171 prox=curl_getenv(proxy_env);
4174 if(prox && *prox) { /* don't count "" strings */
4175 proxy = prox; /* use this */
4178 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4180 proxy=curl_getenv("ALL_PROXY");
4182 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4187 #else /* !CURL_DISABLE_HTTP */
4190 #endif /* CURL_DISABLE_HTTP */
4196 * If this is supposed to use a proxy, we need to figure out the proxy
4197 * host name, so that we can re-use an existing connection
4198 * that may exist registered to the same proxy host.
4199 * proxy will be freed before this function returns.
4201 static CURLcode parse_proxy(struct SessionHandle *data,
4202 struct connectdata *conn, char *proxy)
4207 /* We use 'proxyptr' to point to the proxy name from now on... */
4212 /* We do the proxy host string parsing here. We want the host name and the
4213 * port name. Accept a protocol:// prefix
4216 /* Parse the protocol part if present */
4217 endofprot = strstr(proxy, "://");
4219 proxyptr = endofprot+3;
4220 if(checkprefix("socks5h", proxy))
4221 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4222 else if(checkprefix("socks5", proxy))
4223 conn->proxytype = CURLPROXY_SOCKS5;
4224 else if(checkprefix("socks4a", proxy))
4225 conn->proxytype = CURLPROXY_SOCKS4A;
4226 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4227 conn->proxytype = CURLPROXY_SOCKS4;
4228 /* Any other xxx:// : change to http proxy */
4231 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4233 /* Is there a username and password given in this proxy url? */
4234 atsign = strchr(proxyptr, '@');
4236 CURLcode res = CURLE_OK;
4237 char *proxyuser = NULL;
4238 char *proxypasswd = NULL;
4240 res = parse_login_details(proxyptr, atsign - proxyptr,
4241 &proxyuser, &proxypasswd, NULL);
4243 /* found user and password, rip them out. note that we are
4244 unescaping them, as there is otherwise no way to have a
4245 username or password with reserved characters like ':' in
4247 Curl_safefree(conn->proxyuser);
4248 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4249 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4251 conn->proxyuser = strdup("");
4253 if(!conn->proxyuser)
4254 res = CURLE_OUT_OF_MEMORY;
4256 Curl_safefree(conn->proxypasswd);
4257 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4258 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4260 conn->proxypasswd = strdup("");
4262 if(!conn->proxypasswd)
4263 res = CURLE_OUT_OF_MEMORY;
4267 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4268 atsign++; /* the right side of the @-letter */
4271 proxyptr = atsign; /* now use this instead */
4273 res = CURLE_OUT_OF_MEMORY;
4277 Curl_safefree(proxyuser);
4278 Curl_safefree(proxypasswd);
4284 /* start scanning for port number at this point */
4287 /* detect and extract RFC2732-style IPv6-addresses */
4288 if(*proxyptr == '[') {
4289 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4290 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4294 /* yeps, it ended nicely with a bracket as well */
4297 infof(data, "Invalid IPv6 address format\n");
4299 /* Note that if this didn't end with a bracket, we still advanced the
4300 * proxyptr first, but I can't see anything wrong with that as no host
4301 * name nor a numeric can legally start with a bracket.
4305 /* Get port number off proxy.server.com:1080 */
4306 prox_portno = strchr(portptr, ':');
4308 *prox_portno = 0x0; /* cut off number from host name */
4310 /* now set the local port number */
4311 conn->port = strtol(prox_portno, NULL, 10);
4314 if(proxyptr[0]=='/')
4315 /* If the first character in the proxy string is a slash, fail
4316 immediately. The following code will otherwise clear the string which
4317 will lead to code running as if no proxy was set! */
4318 return CURLE_COULDNT_RESOLVE_PROXY;
4320 /* without a port number after the host name, some people seem to use
4321 a slash so we strip everything from the first slash */
4322 atsign = strchr(proxyptr, '/');
4324 *atsign = 0x0; /* cut off path part from host name */
4326 if(data->set.proxyport)
4327 /* None given in the proxy string, then get the default one if it is
4329 conn->port = data->set.proxyport;
4332 /* now, clone the cleaned proxy host name */
4333 conn->proxy.rawalloc = strdup(proxyptr);
4334 conn->proxy.name = conn->proxy.rawalloc;
4336 if(!conn->proxy.rawalloc)
4337 return CURLE_OUT_OF_MEMORY;
4343 * Extract the user and password from the authentication string
4345 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4346 struct connectdata *conn)
4348 char proxyuser[MAX_CURL_USER_LENGTH]="";
4349 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4351 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4352 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4353 MAX_CURL_USER_LENGTH);
4354 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4356 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4357 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4358 MAX_CURL_PASSWORD_LENGTH);
4359 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4362 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4363 if(!conn->proxyuser)
4364 return CURLE_OUT_OF_MEMORY;
4366 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4367 if(!conn->proxypasswd)
4368 return CURLE_OUT_OF_MEMORY;
4372 #endif /* CURL_DISABLE_PROXY */
4377 * Parse the login details (user name, password and options) from the URL and
4378 * strip them out of the host name
4380 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4383 * Outputs: (almost :- all currently undefined)
4384 * conn->bits.user_passwd - non-zero if non-default passwords exist
4385 * user - non-zero length if defined
4386 * passwd - non-zero length if defined
4387 * options - non-zero length if defined
4388 * conn->host.name - remove user name and password
4390 static CURLcode parse_url_login(struct SessionHandle *data,
4391 struct connectdata *conn,
4392 char *user, char *passwd, char *options)
4394 CURLcode result = CURLE_OK;
4396 char *passwdp = NULL;
4397 char *optionsp = NULL;
4399 /* At this point, we're hoping all the other special cases have
4400 * been taken care of, so conn->host.name is at most
4401 * [user[:password][;options]]@]hostname
4403 * We need somewhere to put the embedded details, so do that first.
4406 char *ptr = strchr(conn->host.name, '@');
4407 char *login = conn->host.name;
4409 user[0] = 0; /* to make everything well-defined */
4413 /* We will now try to extract the
4414 * possible login information in a string like:
4415 * ftp://user:password@ftp.my.site:8021/README */
4417 /* There's login information to the left of the @ */
4419 conn->host.name = ++ptr;
4421 /* So the hostname is sane. Only bother interpreting the
4422 * results if we could care. It could still be wasted
4423 * work because it might be overtaken by the programmatically
4424 * set user/passwd, but doing that first adds more cases here :-(
4427 if(data->set.use_netrc != CURL_NETRC_REQUIRED) {
4428 /* We could use the login information in the URL so extract it */
4429 result = parse_login_details(login, ptr - login - 1,
4430 &userp, &passwdp, &optionsp);
4435 /* We have a user in the URL */
4436 conn->bits.userpwd_in_url = TRUE;
4437 conn->bits.user_passwd = TRUE; /* enable user+password */
4439 /* Decode the user */
4440 newname = curl_easy_unescape(data, userp, 0, NULL);
4442 return CURLE_OUT_OF_MEMORY;
4444 if(strlen(newname) < MAX_CURL_USER_LENGTH)
4445 strcpy(user, newname);
4451 /* We have a password in the URL so decode it */
4452 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4454 return CURLE_OUT_OF_MEMORY;
4456 if(strlen(newpasswd) < MAX_CURL_PASSWORD_LENGTH)
4457 strcpy(passwd, newpasswd);
4463 /* We have an options list in the URL so decode it */
4464 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4466 return CURLE_OUT_OF_MEMORY;
4468 if(strlen(newoptions) < MAX_CURL_OPTIONS_LENGTH)
4469 strcpy(options, newoptions);
4475 Curl_safefree(userp);
4476 Curl_safefree(passwdp);
4477 Curl_safefree(optionsp);
4485 * parse_login_details()
4487 * This is used to parse a login string for user name, password and options in
4488 * the following formats:
4492 * user:password;options
4494 * user;options:password
4502 * login [in] - The login string.
4503 * len [in] - The length of the login string.
4504 * userp [in/out] - The address where a pointer to newly allocated memory
4505 * holding the user will be stored upon completion.
4506 * passdwp [in/out] - The address where a pointer to newly allocated memory
4507 * holding the password will be stored upon completion.
4508 * optionsp [in/out] - The address where a pointer to newly allocated memory
4509 * holding the options will be stored upon completion.
4511 * Returns CURLE_OK on success.
4513 static CURLcode parse_login_details(const char *login, const size_t len,
4514 char **userp, char **passwdp,
4517 CURLcode result = CURLE_OK;
4521 const char *psep = NULL;
4522 const char *osep = NULL;
4527 /* Attempt to find the password separator */
4529 psep = strchr(login, ':');
4531 /* Within the constraint of the login string */
4532 if(psep >= login + len)
4536 /* Attempt to find the options separator */
4538 osep = strchr(login, ';');
4540 /* Within the constraint of the login string */
4541 if(osep >= login + len)
4545 /* Calculate the portion lengths */
4547 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4548 (osep ? (size_t)(osep - login) : len));
4550 (osep && osep > psep ? (size_t)(osep - psep) :
4551 (size_t)(login + len - psep)) - 1 : 0);
4553 (psep && psep > osep ? (size_t)(psep - osep) :
4554 (size_t)(login + len - osep)) - 1 : 0);
4556 /* Allocate the user portion buffer */
4558 ubuf = malloc(ulen + 1);
4560 result = CURLE_OUT_OF_MEMORY;
4563 /* Allocate the password portion buffer */
4564 if(!result && passwdp && plen) {
4565 pbuf = malloc(plen + 1);
4567 result = CURLE_OUT_OF_MEMORY;
4570 /* Allocate the options portion buffer */
4571 if(!result && optionsp && olen) {
4572 obuf = malloc(olen + 1);
4574 result = CURLE_OUT_OF_MEMORY;
4578 /* Store the user portion if necessary */
4580 memcpy(ubuf, login, ulen);
4582 Curl_safefree(*userp);
4586 /* Store the password portion if necessary */
4588 memcpy(pbuf, psep + 1, plen);
4590 Curl_safefree(*passwdp);
4594 /* Store the options portion if necessary */
4596 memcpy(obuf, osep + 1, olen);
4598 Curl_safefree(*optionsp);
4606 /*************************************************************
4607 * Figure out the remote port number and fix it in the URL
4609 * No matter if we use a proxy or not, we have to figure out the remote
4610 * port number of various reasons.
4612 * To be able to detect port number flawlessly, we must not confuse them
4613 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4615 * The conn->host.name is currently [user:passwd@]host[:port] where host
4616 * could be a hostname, IPv4 address or IPv6 address.
4618 * The port number embedded in the URL is replaced, if necessary.
4619 *************************************************************/
4620 static CURLcode parse_remote_port(struct SessionHandle *data,
4621 struct connectdata *conn)
4626 /* Note that at this point, the IPv6 address cannot contain any scope
4627 suffix as that has already been removed in the parseurlandfillconn()
4629 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4631 (']' == endbracket)) {
4632 /* this is a RFC2732-style specified IP-address */
4633 conn->bits.ipv6_ip = TRUE;
4635 conn->host.name++; /* skip over the starting bracket */
4636 portptr = strchr(conn->host.name, ']');
4638 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4640 portptr = NULL; /* no port number available */
4645 struct in6_addr in6;
4646 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4647 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4649 failf(data, "IPv6 numerical address used in URL without brackets");
4650 return CURLE_URL_MALFORMAT;
4654 portptr = strrchr(conn->host.name, ':');
4657 if(data->set.use_port && data->state.allow_port) {
4658 /* if set, we use this and ignore the port possibly given in the URL */
4659 conn->remote_port = (unsigned short)data->set.use_port;
4661 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4662 number - since the port number is to be ignored! */
4663 if(conn->bits.httpproxy) {
4664 /* we need to create new URL with the new port number */
4668 if(conn->bits.type_set)
4669 snprintf(type, sizeof(type), ";type=%c",
4670 data->set.prefer_ascii?'A':
4671 (data->set.ftp_list_only?'D':'I'));
4674 * This synthesized URL isn't always right--suffixes like ;type=A are
4675 * stripped off. It would be better to work directly from the original
4676 * URL and simply replace the port part of it.
4678 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4679 conn->bits.ipv6_ip?"[":"", conn->host.name,
4680 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4681 data->state.slash_removed?"/":"", data->state.path,
4684 return CURLE_OUT_OF_MEMORY;
4686 if(data->change.url_alloc) {
4687 Curl_safefree(data->change.url);
4688 data->change.url_alloc = FALSE;
4691 data->change.url = url;
4692 data->change.url_alloc = TRUE;
4696 /* no CURLOPT_PORT given, extract the one from the URL */
4701 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4703 if(rest != (portptr+1) && *rest == '\0') {
4704 /* The colon really did have only digits after it,
4705 * so it is either a port number or a mistake */
4707 if(port > 0xffff) { /* Single unix standard says port numbers are
4709 failf(data, "Port number too large: %lu", port);
4710 return CURLE_URL_MALFORMAT;
4713 *portptr = '\0'; /* cut off the name there */
4714 conn->remote_port = curlx_ultous(port);
4717 /* Browser behavior adaptation. If there's a colon with no digits after,
4718 just cut off the name there which makes us ignore the colon and just
4719 use the default port. Firefox and Chrome both do that. */
4726 * Override the login details from the URL with that in the CURLOPT_USERPWD
4727 * option or a .netrc file, if applicable.
4729 static void override_login(struct SessionHandle *data,
4730 struct connectdata *conn,
4731 char *user, char *passwd, char *options)
4733 if(data->set.str[STRING_USERNAME]) {
4734 strncpy(user, data->set.str[STRING_USERNAME], MAX_CURL_USER_LENGTH);
4735 user[MAX_CURL_USER_LENGTH - 1] = '\0'; /* To be on safe side */
4738 if(data->set.str[STRING_PASSWORD]) {
4739 strncpy(passwd, data->set.str[STRING_PASSWORD], MAX_CURL_PASSWORD_LENGTH);
4740 passwd[MAX_CURL_PASSWORD_LENGTH - 1] = '\0'; /* To be on safe side */
4743 if(data->set.str[STRING_OPTIONS]) {
4744 strncpy(options, data->set.str[STRING_OPTIONS], MAX_CURL_OPTIONS_LENGTH);
4745 options[MAX_CURL_OPTIONS_LENGTH - 1] = '\0'; /* To be on safe side */
4748 conn->bits.netrc = FALSE;
4749 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4750 if(Curl_parsenetrc(conn->host.name,
4752 data->set.str[STRING_NETRC_FILE])) {
4753 infof(data, "Couldn't find host %s in the "
4754 DOT_CHAR "netrc file; using defaults\n",
4758 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4759 file, so that it is safe to use even if we followed a Location: to a
4760 different host or similar. */
4761 conn->bits.netrc = TRUE;
4763 conn->bits.user_passwd = TRUE; /* enable user+password */
4769 * Set password so it's available in the connection.
4771 static CURLcode set_login(struct connectdata *conn,
4772 const char *user, const char *passwd,
4773 const char *options)
4775 CURLcode result = CURLE_OK;
4777 /* If our protocol needs a password and we have none, use the defaults */
4778 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4779 /* Store the default user */
4780 conn->user = strdup(CURL_DEFAULT_USER);
4782 /* Store the default password */
4784 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4786 conn->passwd = NULL;
4788 /* This is the default password, so DON'T set conn->bits.user_passwd */
4791 /* Store the user, zero-length if not set */
4792 conn->user = strdup(user);
4794 /* Store the password (only if user is present), zero-length if not set */
4796 conn->passwd = strdup(passwd);
4798 conn->passwd = NULL;
4801 if(!conn->user || !conn->passwd)
4802 result = CURLE_OUT_OF_MEMORY;
4804 /* Store the options, null if not set */
4805 if(!result && options[0]) {
4806 conn->options = strdup(options);
4809 result = CURLE_OUT_OF_MEMORY;
4815 /*************************************************************
4816 * Resolve the address of the server or proxy
4817 *************************************************************/
4818 static CURLcode resolve_server(struct SessionHandle *data,
4819 struct connectdata *conn,
4822 CURLcode result=CURLE_OK;
4823 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4825 /*************************************************************
4826 * Resolve the name of the server or proxy
4827 *************************************************************/
4828 if(conn->bits.reuse)
4829 /* We're reusing the connection - no need to resolve anything, and
4830 fix_hostname() was called already in create_conn() for the re-use
4835 /* this is a fresh connect */
4837 struct Curl_dns_entry *hostaddr;
4839 /* set a pointer to the hostname we display */
4840 fix_hostname(data, conn, &conn->host);
4842 if(!conn->proxy.name || !*conn->proxy.name) {
4843 /* If not connecting via a proxy, extract the port from the URL, if it is
4844 * there, thus overriding any defaults that might have been set above. */
4845 conn->port = conn->remote_port; /* it is the same port */
4847 /* Resolve target host right on */
4848 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4849 &hostaddr, timeout_ms);
4850 if(rc == CURLRESOLV_PENDING)
4853 else if(rc == CURLRESOLV_TIMEDOUT)
4854 result = CURLE_OPERATION_TIMEDOUT;
4856 else if(!hostaddr) {
4857 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4858 result = CURLE_COULDNT_RESOLVE_HOST;
4859 /* don't return yet, we need to clean up the timeout first */
4863 /* This is a proxy that hasn't been resolved yet. */
4865 /* IDN-fix the proxy name */
4866 fix_hostname(data, conn, &conn->proxy);
4869 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4870 &hostaddr, timeout_ms);
4872 if(rc == CURLRESOLV_PENDING)
4875 else if(rc == CURLRESOLV_TIMEDOUT)
4876 result = CURLE_OPERATION_TIMEDOUT;
4878 else if(!hostaddr) {
4879 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4880 result = CURLE_COULDNT_RESOLVE_PROXY;
4881 /* don't return yet, we need to clean up the timeout first */
4884 DEBUGASSERT(conn->dns_entry == NULL);
4885 conn->dns_entry = hostaddr;
4892 * Cleanup the connection just allocated before we can move along and use the
4893 * previously existing one. All relevant data is copied over and old_conn is
4894 * ready for freeing once this function returns.
4896 static void reuse_conn(struct connectdata *old_conn,
4897 struct connectdata *conn)
4899 if(old_conn->proxy.rawalloc)
4900 free(old_conn->proxy.rawalloc);
4902 /* free the SSL config struct from this connection struct as this was
4903 allocated in vain and is targeted for destruction */
4904 Curl_free_ssl_config(&old_conn->ssl_config);
4906 conn->data = old_conn->data;
4908 /* get the user+password information from the old_conn struct since it may
4909 * be new for this request even when we re-use an existing connection */
4910 conn->bits.user_passwd = old_conn->bits.user_passwd;
4911 if(conn->bits.user_passwd) {
4912 /* use the new user name and password though */
4913 Curl_safefree(conn->user);
4914 Curl_safefree(conn->passwd);
4915 conn->user = old_conn->user;
4916 conn->passwd = old_conn->passwd;
4917 old_conn->user = NULL;
4918 old_conn->passwd = NULL;
4921 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4922 if(conn->bits.proxy_user_passwd) {
4923 /* use the new proxy user name and proxy password though */
4924 Curl_safefree(conn->proxyuser);
4925 Curl_safefree(conn->proxypasswd);
4926 conn->proxyuser = old_conn->proxyuser;
4927 conn->proxypasswd = old_conn->proxypasswd;
4928 old_conn->proxyuser = NULL;
4929 old_conn->proxypasswd = NULL;
4932 /* host can change, when doing keepalive with a proxy or if the case is
4933 different this time etc */
4934 Curl_safefree(conn->host.rawalloc);
4935 conn->host=old_conn->host;
4937 /* persist connection info in session handle */
4938 Curl_persistconninfo(conn);
4941 conn->bits.reuse = TRUE; /* yes, we're re-using here */
4943 Curl_safefree(old_conn->user);
4944 Curl_safefree(old_conn->passwd);
4945 Curl_safefree(old_conn->proxyuser);
4946 Curl_safefree(old_conn->proxypasswd);
4947 Curl_safefree(old_conn->localdev);
4949 Curl_llist_destroy(old_conn->send_pipe, NULL);
4950 Curl_llist_destroy(old_conn->recv_pipe, NULL);
4952 old_conn->send_pipe = NULL;
4953 old_conn->recv_pipe = NULL;
4955 Curl_safefree(old_conn->master_buffer);
4959 * create_conn() sets up a new connectdata struct, or re-uses an already
4960 * existing one, and resolves host name.
4962 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
4963 * response will be coming asynchronously. If *async is FALSE, the name is
4966 * @param data The sessionhandle pointer
4967 * @param in_connect is set to the next connection data pointer
4968 * @param async is set TRUE when an async DNS resolution is pending
4969 * @see Curl_setup_conn()
4971 * *NOTE* this function assigns the conn->data pointer!
4974 static CURLcode create_conn(struct SessionHandle *data,
4975 struct connectdata **in_connect,
4978 CURLcode result = CURLE_OK;
4979 struct connectdata *conn;
4980 struct connectdata *conn_temp = NULL;
4982 char user[MAX_CURL_USER_LENGTH];
4983 char passwd[MAX_CURL_PASSWORD_LENGTH];
4984 char options[MAX_CURL_OPTIONS_LENGTH];
4987 bool prot_missing = FALSE;
4988 bool no_connections_available = FALSE;
4990 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
4991 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
4995 /*************************************************************
4997 *************************************************************/
4999 if(!data->change.url)
5000 return CURLE_URL_MALFORMAT;
5002 /* First, split up the current URL in parts so that we can use the
5003 parts for checking against the already present connections. In order
5004 to not have to modify everything at once, we allocate a temporary
5005 connection data struct and fill in for comparison purposes. */
5006 conn = allocate_conn(data);
5009 return CURLE_OUT_OF_MEMORY;
5011 /* We must set the return variable as soon as possible, so that our
5012 parent can cleanup any possible allocs we may have done before
5016 /* This initing continues below, see the comment "Continue connectdata
5017 * initialization here" */
5019 /***********************************************************
5020 * We need to allocate memory to store the path in. We get the size of the
5021 * full URL to be sure, and we need to make it at least 256 bytes since
5022 * other parts of the code will rely on this fact
5023 ***********************************************************/
5024 #define LEAST_PATH_ALLOC 256
5025 urllen=strlen(data->change.url);
5026 if(urllen < LEAST_PATH_ALLOC)
5027 urllen=LEAST_PATH_ALLOC;
5030 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5031 * 1 - an extra terminating zero
5032 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5035 Curl_safefree(data->state.pathbuffer);
5036 data->state.path = NULL;
5038 data->state.pathbuffer = malloc(urllen+2);
5039 if(NULL == data->state.pathbuffer)
5040 return CURLE_OUT_OF_MEMORY; /* really bad error */
5041 data->state.path = data->state.pathbuffer;
5043 conn->host.rawalloc = malloc(urllen+2);
5044 if(NULL == conn->host.rawalloc) {
5045 Curl_safefree(data->state.pathbuffer);
5046 data->state.path = NULL;
5047 return CURLE_OUT_OF_MEMORY;
5050 conn->host.name = conn->host.rawalloc;
5051 conn->host.name[0] = 0;
5053 result = parseurlandfillconn(data, conn, &prot_missing, user, passwd,
5055 if(result != CURLE_OK)
5058 /*************************************************************
5059 * No protocol part in URL was used, add it!
5060 *************************************************************/
5062 /* We're guessing prefixes here and if we're told to use a proxy or if
5063 we're gonna follow a Location: later or... then we need the protocol
5064 part added so that we have a valid URL. */
5067 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5070 Curl_safefree(proxy);
5071 return CURLE_OUT_OF_MEMORY;
5074 if(data->change.url_alloc) {
5075 Curl_safefree(data->change.url);
5076 data->change.url_alloc = FALSE;
5079 data->change.url = reurl;
5080 data->change.url_alloc = TRUE; /* free this later */
5083 /*************************************************************
5084 * If the protocol can't handle url query strings, then cut
5085 * of the unhandable part
5086 *************************************************************/
5087 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5088 char *path_q_sep = strchr(conn->data->state.path, '?');
5090 /* according to rfc3986, allow the query (?foo=bar)
5091 also on protocols that can't handle it.
5093 cut the string-part after '?'
5096 /* terminate the string */
5101 #ifndef CURL_DISABLE_PROXY
5102 /*************************************************************
5103 * Extract the user and password from the authentication string
5104 *************************************************************/
5105 if(conn->bits.proxy_user_passwd) {
5106 result = parse_proxy_auth(data, conn);
5107 if(result != CURLE_OK)
5111 /*************************************************************
5112 * Detect what (if any) proxy to use
5113 *************************************************************/
5114 if(data->set.str[STRING_PROXY]) {
5115 proxy = strdup(data->set.str[STRING_PROXY]);
5116 /* if global proxy is set, this is it */
5118 failf(data, "memory shortage");
5119 return CURLE_OUT_OF_MEMORY;
5123 if(data->set.str[STRING_NOPROXY] &&
5124 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5126 free(proxy); /* proxy is in exception list */
5131 proxy = detect_proxy(conn);
5133 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5134 free(proxy); /* Don't bother with an empty proxy string or if the
5135 protocol doesn't work with network */
5139 /***********************************************************************
5140 * If this is supposed to use a proxy, we need to figure out the proxy host
5141 * name, proxy type and port number, so that we can re-use an existing
5142 * connection that may exist registered to the same proxy host.
5143 ***********************************************************************/
5145 result = parse_proxy(data, conn, proxy);
5147 free(proxy); /* parse_proxy copies the proxy string */
5152 if((conn->proxytype == CURLPROXY_HTTP) ||
5153 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5154 #ifdef CURL_DISABLE_HTTP
5155 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5156 return CURLE_UNSUPPORTED_PROTOCOL;
5158 /* force this connection's protocol to become HTTP if not already
5159 compatible - if it isn't tunneling through */
5160 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5161 !conn->bits.tunnel_proxy)
5162 conn->handler = &Curl_handler_http;
5164 conn->bits.httpproxy = TRUE;
5168 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5169 conn->bits.proxy = TRUE;
5172 /* we aren't using the proxy after all... */
5173 conn->bits.proxy = FALSE;
5174 conn->bits.httpproxy = FALSE;
5175 conn->bits.proxy_user_passwd = FALSE;
5176 conn->bits.tunnel_proxy = FALSE;
5179 #endif /* CURL_DISABLE_PROXY */
5181 /*************************************************************
5182 * Setup internals depending on protocol. Needs to be done after
5183 * we figured out what/if proxy to use.
5184 *************************************************************/
5185 result = setup_connection_internals(conn);
5186 if(result != CURLE_OK) {
5187 Curl_safefree(proxy);
5191 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5192 conn->send[FIRSTSOCKET] = Curl_send_plain;
5193 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5194 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5196 /***********************************************************************
5197 * file: is a special case in that it doesn't need a network connection
5198 ***********************************************************************/
5199 #ifndef CURL_DISABLE_FILE
5200 if(conn->handler->flags & PROTOPT_NONETWORK) {
5202 /* this is supposed to be the connect function so we better at least check
5203 that the file is present here! */
5204 DEBUGASSERT(conn->handler->connect_it);
5205 result = conn->handler->connect_it(conn, &done);
5207 /* Setup a "faked" transfer that'll do nothing */
5208 if(CURLE_OK == result) {
5210 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5212 ConnectionStore(data, conn);
5215 * Setup whatever necessary for a resumed transfer
5217 result = setup_range(data);
5219 DEBUGASSERT(conn->handler->done);
5220 /* we ignore the return code for the protocol-specific DONE */
5221 (void)conn->handler->done(conn, result, FALSE);
5225 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5226 -1, NULL); /* no upload */
5229 /* since we skip do_init() */
5230 Curl_speedinit(data);
5236 /*************************************************************
5237 * If the protocol is using SSL and HTTP proxy is used, we set
5238 * the tunnel_proxy bit.
5239 *************************************************************/
5240 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5241 conn->bits.tunnel_proxy = TRUE;
5243 /*************************************************************
5244 * Figure out the remote port number and fix it in the URL
5245 *************************************************************/
5246 result = parse_remote_port(data, conn);
5247 if(result != CURLE_OK)
5250 /* Check for overridden login details and set them accordingly */
5251 override_login(data, conn, user, passwd, options);
5252 result = set_login(conn, user, passwd, options);
5253 if(result != CURLE_OK)
5256 /* Get a cloned copy of the SSL config situation stored in the
5257 connection struct. But to get this going nicely, we must first make
5258 sure that the strings in the master copy are pointing to the correct
5259 strings in the session handle strings array!
5261 Keep in mind that the pointers in the master copy are pointing to strings
5262 that will be freed as part of the SessionHandle struct, but all cloned
5263 copies will be separately allocated.
5265 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5266 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5267 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5268 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5269 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5270 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5271 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5273 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5274 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5277 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config))
5278 return CURLE_OUT_OF_MEMORY;
5280 /*************************************************************
5281 * Check the current list of connections to see if we can
5282 * re-use an already existing one or if we have to create a
5284 *************************************************************/
5286 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5287 we only acknowledge this option if this is not a re-used connection
5288 already (which happens due to follow-location or during a HTTP
5289 authentication phase). */
5290 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5293 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5295 /* If we found a reusable connection, we may still want to
5296 open a new connection if we are pipelining. */
5297 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5298 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5300 infof(data, "Found connection %d, with requests in the pipe (%d)\n",
5301 conn_temp->connection_id, pipelen);
5303 if(conn_temp->bundle->num_connections < max_host_connections &&
5304 data->state.conn_cache->num_connections < max_total_connections) {
5305 /* We want a new connection anyway */
5308 infof(data, "We can reuse, but we want a new connection anyway\n");
5315 * We already have a connection for this, we got the former connection
5316 * in the conn_temp variable and thus we need to cleanup the one we
5317 * just allocated before we can move along and use the previously
5320 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5321 handle in a multi stack may nick it */
5322 reuse_conn(conn, conn_temp);
5323 free(conn); /* we don't need this anymore */
5327 /* set a pointer to the hostname we display */
5328 fix_hostname(data, conn, &conn->host);
5330 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5331 conn->connection_id,
5332 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5335 /* We have decided that we want a new connection. However, we may not
5336 be able to do that if we have reached the limit of how many
5337 connections we are allowed to open. */
5338 struct connectbundle *bundle;
5340 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5342 if(max_host_connections > 0 && bundle &&
5343 (bundle->num_connections >= max_host_connections)) {
5344 struct connectdata *conn_candidate;
5346 /* The bundle is full. Let's see if we can kill a connection. */
5347 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5349 if(conn_candidate) {
5350 /* Set the connection's owner correctly, then kill it */
5351 conn_candidate->data = data;
5352 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5355 no_connections_available = TRUE;
5358 if(max_total_connections > 0 &&
5359 (data->state.conn_cache->num_connections >= max_total_connections)) {
5360 struct connectdata *conn_candidate;
5362 /* The cache is full. Let's see if we can kill a connection. */
5363 conn_candidate = find_oldest_idle_connection(data);
5365 if(conn_candidate) {
5366 /* Set the connection's owner correctly, then kill it */
5367 conn_candidate->data = data;
5368 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5371 no_connections_available = TRUE;
5375 if(no_connections_available) {
5376 infof(data, "No connections available.\n");
5381 return CURLE_NO_CONNECTION_AVAILABLE;
5385 * This is a brand new connection, so let's store it in the connection
5388 ConnectionStore(data, conn);
5392 /* Mark the connection as used */
5395 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5399 * Setup whatever necessary for a resumed transfer
5401 result = setup_range(data);
5405 /* Continue connectdata initialization here. */
5408 * Inherit the proper values from the urldata struct AFTER we have arranged
5409 * the persistent connection stuff
5411 conn->fread_func = data->set.fread_func;
5412 conn->fread_in = data->set.in;
5413 conn->seek_func = data->set.seek_func;
5414 conn->seek_client = data->set.seek_client;
5416 /*************************************************************
5417 * Resolve the address of the server or proxy
5418 *************************************************************/
5419 result = resolve_server(data, conn, async);
5424 /* Curl_setup_conn() is called after the name resolve initiated in
5425 * create_conn() is all done.
5427 * Curl_setup_conn() also handles reused connections
5429 * conn->data MUST already have been setup fine (in create_conn)
5432 CURLcode Curl_setup_conn(struct connectdata *conn,
5433 bool *protocol_done)
5435 CURLcode result = CURLE_OK;
5436 struct SessionHandle *data = conn->data;
5438 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5440 if(conn->handler->flags & PROTOPT_NONETWORK) {
5441 /* nothing to setup when not using a network */
5442 *protocol_done = TRUE;
5445 *protocol_done = FALSE; /* default to not done */
5447 /* set proxy_connect_closed to false unconditionally already here since it
5448 is used strictly to provide extra information to a parent function in the
5449 case of proxy CONNECT failures and we must make sure we don't have it
5450 lingering set from a previous invoke */
5451 conn->bits.proxy_connect_closed = FALSE;
5454 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5455 * basically anything through a http proxy we can't limit this based on
5458 if(data->set.str[STRING_USERAGENT]) {
5459 Curl_safefree(conn->allocptr.uagent);
5460 conn->allocptr.uagent =
5461 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5462 if(!conn->allocptr.uagent)
5463 return CURLE_OUT_OF_MEMORY;
5466 data->req.headerbytecount = 0;
5468 #ifdef CURL_DO_LINEEND_CONV
5469 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5470 #endif /* CURL_DO_LINEEND_CONV */
5472 /* set start time here for timeout purposes in the connect procedure, it
5473 is later set again for the progress meter purpose */
5474 conn->now = Curl_tvnow();
5477 /* loop for CURL_SERVER_CLOSED_CONNECTION */
5479 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5480 /* Try to connect only if not already connected */
5481 bool connected = FALSE;
5483 result = ConnectPlease(data, conn, &connected);
5485 if(result && !conn->ip_addr) {
5486 /* transport connection failure not related with authentication */
5487 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5492 result = Curl_protocol_connect(conn, protocol_done);
5493 if(CURLE_OK == result)
5494 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5497 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5499 /* if the connection was closed by the server while exchanging
5500 authentication informations, retry with the new set
5501 authentication information */
5502 if(conn->bits.proxy_connect_closed) {
5503 /* reset the error buffer */
5504 if(data->set.errorbuffer)
5505 data->set.errorbuffer[0] = '\0';
5506 data->state.errorbuf = FALSE;
5510 if(CURLE_OK != result)
5514 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5515 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5516 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5517 *protocol_done = TRUE;
5518 Curl_verboseconnect(conn);
5519 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5521 /* Stop the loop now */
5525 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5526 set this here perhaps a second time */
5530 * This check is quite a hack. We're calling _fsetmode to fix the problem
5531 * with fwrite converting newline characters (you get mangled text files,
5532 * and corrupted binary files when you download to stdout and redirect it to
5536 if((data->set.out)->_handle == NULL) {
5537 _fsetmode(stdout, "b");
5544 CURLcode Curl_connect(struct SessionHandle *data,
5545 struct connectdata **in_connect,
5547 bool *protocol_done)
5551 *asyncp = FALSE; /* assume synchronous resolves by default */
5553 /* call the stuff that needs to be called */
5554 code = create_conn(data, in_connect, asyncp);
5556 if(CURLE_OK == code) {
5558 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5560 *protocol_done = TRUE;
5562 /* DNS resolution is done: that's either because this is a reused
5563 connection, in which case DNS was unnecessary, or because DNS
5564 really did finish already (synch resolver/fast async resolve) */
5565 code = Curl_setup_conn(*in_connect, protocol_done);
5569 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5574 if(code && *in_connect) {
5575 /* We're not allowed to return failure with memory left allocated
5576 in the connectdata struct, free those here */
5577 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5578 *in_connect = NULL; /* return a NULL */
5584 CURLcode Curl_done(struct connectdata **connp,
5585 CURLcode status, /* an error if this is called after an
5586 error was detected */
5590 struct connectdata *conn;
5591 struct SessionHandle *data;
5593 DEBUGASSERT(*connp);
5599 /* Stop if Curl_done() has already been called */
5602 Curl_getoff_all_pipelines(data, conn);
5604 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5605 !data->set.reuse_forbid &&
5607 /* Stop if pipeline is not empty and we do not have to close
5611 conn->bits.done = TRUE; /* called just now! */
5613 /* Cleanup possible redirect junk */
5614 if(data->req.newurl) {
5615 free(data->req.newurl);
5616 data->req.newurl = NULL;
5618 if(data->req.location) {
5619 free(data->req.location);
5620 data->req.location = NULL;
5623 Curl_resolver_cancel(conn);
5625 if(conn->dns_entry) {
5626 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5627 conn->dns_entry = NULL;
5630 if(status == CURLE_ABORTED_BY_CALLBACK)
5631 /* When we're aborted due to a callback return code it basically have to
5632 be counted as premature as there is trouble ahead if we don't. We have
5633 many callbacks and protocols work differently, we could potentially do
5634 this more fine-grained in the future. */
5637 /* this calls the protocol-specific function pointer previously set */
5638 if(conn->handler->done)
5639 result = conn->handler->done(conn, status, premature);
5643 if(Curl_pgrsDone(conn) && !result)
5644 result = CURLE_ABORTED_BY_CALLBACK;
5646 /* if the transfer was completed in a paused state there can be buffered
5647 data left to write and then kill */
5648 if(data->state.tempwrite) {
5649 free(data->state.tempwrite);
5650 data->state.tempwrite = NULL;
5653 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5654 forced us to close this no matter what we think.
5656 if conn->bits.close is TRUE, it means that the connection should be
5657 closed in spite of all our efforts to be nice, due to protocol
5658 restrictions in our or the server's end
5660 if premature is TRUE, it means this connection was said to be DONE before
5661 the entire request operation is complete and thus we can't know in what
5662 state it is for re-using, so we're forced to close it. In a perfect world
5663 we can add code that keep track of if we really must close it here or not,
5664 but currently we have no such detail knowledge.
5666 if(data->set.reuse_forbid || conn->bits.close || premature) {
5667 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5669 /* If we had an error already, make sure we return that one. But
5670 if we got a new error, return that. */
5675 /* the connection is no longer in use */
5676 if(ConnectionDone(data, conn)) {
5677 /* remember the most recently used connection */
5678 data->state.lastconnect = conn;
5680 infof(data, "Connection #%ld to host %s left intact\n",
5681 conn->connection_id,
5682 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5685 data->state.lastconnect = NULL;
5688 *connp = NULL; /* to make the caller of this function better detect that
5689 this was either closed or handed over to the connection
5690 cache here, and therefore cannot be used from this point on
5697 * do_init() inits the readwrite session. This is inited each time (in the DO
5698 * function before the protocol-specific DO functions are invoked) for a
5699 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5700 * nothing in here depends on stuff that are setup dynamically for the
5704 static CURLcode do_init(struct connectdata *conn)
5706 struct SessionHandle *data = conn->data;
5707 struct SingleRequest *k = &data->req;
5709 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5710 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5711 data->state.expect100header = FALSE;
5713 if(data->set.opt_no_body)
5714 /* in HTTP lingo, no body means using the HEAD request... */
5715 data->set.httpreq = HTTPREQ_HEAD;
5716 else if(HTTPREQ_HEAD == data->set.httpreq)
5717 /* ... but if unset there really is no perfect method that is the
5718 "opposite" of HEAD but in reality most people probably think GET
5719 then. The important thing is that we can't let it remain HEAD if the
5720 opt_no_body is set FALSE since then we'll behave wrong when getting
5722 data->set.httpreq = HTTPREQ_GET;
5724 /* NB: the content encoding software depends on this initialization */
5725 Curl_easy_initHandleData(data);
5727 k->start = Curl_tvnow(); /* start time */
5728 k->now = k->start; /* current time is now */
5729 k->header = TRUE; /* assume header */
5733 k->buf = data->state.buffer;
5734 k->uploadbuf = data->state.uploadbuffer;
5735 k->hbufp = data->state.headerbuff;
5736 k->ignorebody=FALSE;
5738 Curl_speedinit(data);
5740 Curl_pgrsSetUploadCounter(data, 0);
5741 Curl_pgrsSetDownloadCounter(data, 0);
5747 * do_complete is called when the DO actions are complete.
5749 * We init chunking and trailer bits to their default values here immediately
5750 * before receiving any header data for the current request in the pipeline.
5752 static void do_complete(struct connectdata *conn)
5754 conn->data->req.chunk=FALSE;
5755 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5756 conn->sockfd:conn->writesockfd)+1;
5757 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5760 CURLcode Curl_do(struct connectdata **connp, bool *done)
5762 CURLcode result=CURLE_OK;
5763 struct connectdata *conn = *connp;
5764 struct SessionHandle *data = conn->data;
5766 if(conn->handler->do_it) {
5767 /* generic protocol-specific function pointer set in curl_connect() */
5768 result = conn->handler->do_it(conn, done);
5770 /* This was formerly done in transfer.c, but we better do it here */
5771 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5773 * If the connection is using an easy handle, call reconnect
5774 * to re-establish the connection. Otherwise, let the multi logic
5775 * figure out how to re-establish the connection.
5778 result = Curl_reconnect_request(connp);
5780 if(result == CURLE_OK) {
5781 /* ... finally back to actually retry the DO phase */
5782 conn = *connp; /* re-assign conn since Curl_reconnect_request
5783 creates a new connection */
5784 result = conn->handler->do_it(conn, done);
5791 if((result == CURLE_OK) && *done)
5792 /* do_complete must be called after the protocol-specific DO function */
5799 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5800 * second stage DO state which (wrongly) was introduced to support FTP's
5801 * second connection.
5803 * TODO: A future libcurl should be able to work away this state.
5807 CURLcode Curl_do_more(struct connectdata *conn, bool *completed)
5809 CURLcode result=CURLE_OK;
5813 if(conn->handler->do_more)
5814 result = conn->handler->do_more(conn, completed);
5816 if(!result && *completed)
5817 /* do_complete must be called after the protocol-specific DO function */
5823 /* Called on connect, and if there's already a protocol-specific struct
5824 allocated for a different connection, this frees it that it can be setup
5825 properly later on. */
5826 void Curl_reset_reqproto(struct connectdata *conn)
5828 struct SessionHandle *data = conn->data;
5829 if(data->state.proto.generic && data->state.current_conn != conn) {
5830 free(data->state.proto.generic);
5831 data->state.proto.generic = NULL;
5833 data->state.current_conn = conn;