1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
81 #include "vtls/vtls.h"
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **userptr, char **passwdptr,
149 static CURLcode parse_login_details(const char *login, const size_t len,
150 char **userptr, char **passwdptr,
156 static const struct Curl_handler * const protocols[] = {
158 #ifndef CURL_DISABLE_HTTP
162 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
166 #ifndef CURL_DISABLE_FTP
170 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
174 #ifndef CURL_DISABLE_TELNET
175 &Curl_handler_telnet,
178 #ifndef CURL_DISABLE_DICT
182 #ifndef CURL_DISABLE_LDAP
184 #if !defined(CURL_DISABLE_LDAPS) && \
185 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
186 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
191 #ifndef CURL_DISABLE_FILE
195 #ifndef CURL_DISABLE_TFTP
204 #ifndef CURL_DISABLE_IMAP
211 #ifndef CURL_DISABLE_POP3
218 #ifndef CURL_DISABLE_SMTP
225 #ifndef CURL_DISABLE_RTSP
229 #ifndef CURL_DISABLE_GOPHER
230 &Curl_handler_gopher,
237 &Curl_handler_rtmpte,
239 &Curl_handler_rtmpts,
242 (struct Curl_handler *) NULL
246 * Dummy handler for undefined protocol schemes.
249 static const struct Curl_handler Curl_handler_dummy = {
250 "<no protocol>", /* scheme */
251 ZERO_NULL, /* setup_connection */
252 ZERO_NULL, /* do_it */
253 ZERO_NULL, /* done */
254 ZERO_NULL, /* do_more */
255 ZERO_NULL, /* connect_it */
256 ZERO_NULL, /* connecting */
257 ZERO_NULL, /* doing */
258 ZERO_NULL, /* proto_getsock */
259 ZERO_NULL, /* doing_getsock */
260 ZERO_NULL, /* domore_getsock */
261 ZERO_NULL, /* perform_getsock */
262 ZERO_NULL, /* disconnect */
263 ZERO_NULL, /* readwrite */
266 PROTOPT_NONE /* flags */
269 void Curl_freeset(struct SessionHandle *data)
271 /* Free all dynamic strings stored in the data->set substructure. */
273 for(i=(enum dupstring)0; i < STRING_LAST; i++)
274 Curl_safefree(data->set.str[i]);
276 if(data->change.referer_alloc) {
277 Curl_safefree(data->change.referer);
278 data->change.referer_alloc = FALSE;
280 data->change.referer = NULL;
283 static CURLcode setstropt(char **charp, char *s)
285 /* Release the previous storage at `charp' and replace by a dynamic storage
286 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
288 Curl_safefree(*charp);
294 return CURLE_OUT_OF_MEMORY;
302 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
304 CURLcode result = CURLE_OK;
308 /* Parse the login details if specified. It not then we treat NULL as a hint
309 to clear the existing data */
311 result = parse_login_details(option, strlen(option),
312 (userp ? &user : NULL),
313 (passwdp ? &passwd : NULL),
318 /* Store the username part of option if required */
320 if(!user && option && option[0] == ':') {
321 /* Allocate an empty string instead of returning NULL as user name */
324 result = CURLE_OUT_OF_MEMORY;
327 Curl_safefree(*userp);
331 /* Store the password part of option if required */
333 Curl_safefree(*passwdp);
341 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
343 CURLcode r = CURLE_OK;
346 /* Copy src->set into dst->set first, then deal with the strings
350 /* clear all string pointers first */
351 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
353 /* duplicate all strings */
354 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
355 r = setstropt(&dst->set.str[i], src->set.str[i]);
360 /* If a failure occurred, freeing has to be performed externally. */
365 * This is the internal function curl_easy_cleanup() calls. This should
366 * cleanup and free all resources associated with this sessionhandle.
368 * NOTE: if we ever add something that attempts to write to a socket or
369 * similar here, we must ignore SIGPIPE first. It is currently only done
370 * when curl_easy_perform() is invoked.
373 CURLcode Curl_close(struct SessionHandle *data)
375 struct Curl_multi *m;
380 Curl_expire(data, 0); /* shut off timers */
385 /* This handle is still part of a multi handle, take care of this first
386 and detach this handle from there. */
387 curl_multi_remove_handle(data->multi, data);
390 /* when curl_easy_perform() is used, it creates its own multi handle to
391 use and this is the one */
392 curl_multi_cleanup(data->multi_easy);
394 /* Destroy the timeout list that is held in the easy handle. It is
395 /normally/ done by curl_multi_remove_handle() but this is "just in
397 if(data->state.timeoutlist) {
398 Curl_llist_destroy(data->state.timeoutlist, NULL);
399 data->state.timeoutlist = NULL;
402 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
403 the multi handle, since that function uses the magic
406 if(data->state.rangestringalloc)
407 free(data->state.range);
409 /* Free the pathbuffer */
410 Curl_safefree(data->state.pathbuffer);
411 data->state.path = NULL;
413 /* freed here just in case DONE wasn't called */
414 Curl_free_request_state(data);
416 /* Close down all open SSL info and sessions */
417 Curl_ssl_close_all(data);
418 Curl_safefree(data->state.first_host);
419 Curl_safefree(data->state.scratch);
420 Curl_ssl_free_certinfo(data);
422 if(data->change.referer_alloc) {
423 Curl_safefree(data->change.referer);
424 data->change.referer_alloc = FALSE;
426 data->change.referer = NULL;
428 if(data->change.url_alloc) {
429 Curl_safefree(data->change.url);
430 data->change.url_alloc = FALSE;
432 data->change.url = NULL;
434 Curl_safefree(data->state.headerbuff);
436 Curl_flush_cookies(data, 1);
438 Curl_digest_cleanup(data);
440 Curl_safefree(data->info.contenttype);
441 Curl_safefree(data->info.wouldredirect);
443 /* this destroys the channel and we cannot use it anymore after this */
444 Curl_resolver_cleanup(data->state.resolver);
446 Curl_convert_close(data);
448 /* No longer a dirty share, if it exists */
450 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
451 data->share->dirty--;
452 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
461 * Initialize the UserDefined fields within a SessionHandle.
462 * This may be safely called on a new or existing SessionHandle.
464 CURLcode Curl_init_userdefined(struct UserDefined *set)
466 CURLcode res = CURLE_OK;
468 set->out = stdout; /* default output to stdout */
469 set->in = stdin; /* default input from stdin */
470 set->err = stderr; /* default stderr to stderr */
472 /* use fwrite as default function to store output */
473 set->fwrite_func = (curl_write_callback)fwrite;
475 /* use fread as default function to read input */
476 set->fread_func = (curl_read_callback)fread;
477 set->is_fread_set = 0;
478 set->is_fwrite_set = 0;
480 set->seek_func = ZERO_NULL;
481 set->seek_client = ZERO_NULL;
483 /* conversion callbacks for non-ASCII hosts */
484 set->convfromnetwork = ZERO_NULL;
485 set->convtonetwork = ZERO_NULL;
486 set->convfromutf8 = ZERO_NULL;
488 set->infilesize = -1; /* we don't know any size */
489 set->postfieldsize = -1; /* unknown size */
490 set->maxredirs = -1; /* allow any amount by default */
492 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
493 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
494 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
495 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
496 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
497 set->ftp_filemethod = FTPFILE_MULTICWD;
499 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
501 /* Set the default size of the SSL session ID cache */
502 set->ssl.max_ssl_sessions = 5;
504 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
505 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
506 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
507 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
509 /* make libcurl quiet by default: */
510 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
513 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
514 * switched off unless wanted.
516 set->ssl.verifypeer = TRUE;
517 set->ssl.verifyhost = TRUE;
519 set->ssl.authtype = CURL_TLSAUTH_NONE;
521 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
523 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
525 set->new_file_perms = 0644; /* Default permissions */
526 set->new_directory_perms = 0755; /* Default permissions */
528 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
529 define since we internally only use the lower 16 bits for the passed
530 in bitmask to not conflict with the private bits */
531 set->allowed_protocols = CURLPROTO_ALL;
532 set->redir_protocols =
533 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
535 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
537 * disallow unprotected protection negotiation NEC reference implementation
538 * seem not to follow rfc1961 section 4.3/4.4
540 set->socks5_gssapi_nec = FALSE;
541 /* set default gssapi service name */
542 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
543 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
548 /* This is our preferred CA cert bundle/path since install time */
549 #if defined(CURL_CA_BUNDLE)
550 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
551 #elif defined(CURL_CA_PATH)
552 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
555 set->wildcardmatch = FALSE;
556 set->chunk_bgn = ZERO_NULL;
557 set->chunk_end = ZERO_NULL;
559 /* tcp keepalives are disabled by default, but provide reasonable values for
560 * the interval and idle times.
562 set->tcp_keepalive = FALSE;
563 set->tcp_keepintvl = 60;
564 set->tcp_keepidle = 60;
566 set->ssl_enable_npn = TRUE;
567 set->ssl_enable_alpn = TRUE;
569 set->expect_100_timeout = 1000L; /* Wait for a second by default. */
576 * @param curl is a pointer to a sessionhandle pointer that gets set by this
581 CURLcode Curl_open(struct SessionHandle **curl)
583 CURLcode res = CURLE_OK;
584 struct SessionHandle *data;
587 /* Very simple start-up: alloc the struct, init it with zeroes and return */
588 data = calloc(1, sizeof(struct SessionHandle));
590 /* this is a very serious error */
591 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
592 return CURLE_OUT_OF_MEMORY;
595 data->magic = CURLEASY_MAGIC_NUMBER;
597 status = Curl_resolver_init(&data->state.resolver);
599 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
604 /* We do some initial setup here, all those fields that can't be just 0 */
606 data->state.headerbuff = malloc(HEADERSIZE);
607 if(!data->state.headerbuff) {
608 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
609 res = CURLE_OUT_OF_MEMORY;
612 res = Curl_init_userdefined(&data->set);
614 data->state.headersize=HEADERSIZE;
616 Curl_convert_init(data);
618 /* most recent connection is not yet defined */
619 data->state.lastconnect = NULL;
621 data->progress.flags |= PGRS_HIDE;
622 data->state.current_speed = -1; /* init to negative == impossible */
624 data->wildcard.state = CURLWC_INIT;
625 data->wildcard.filelist = NULL;
626 data->set.fnmatch = ZERO_NULL;
627 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
631 Curl_resolver_cleanup(data->state.resolver);
632 if(data->state.headerbuff)
633 free(data->state.headerbuff);
644 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
648 CURLcode result = CURLE_OK;
650 #ifndef CURL_DISABLE_HTTP
655 case CURLOPT_DNS_CACHE_TIMEOUT:
656 data->set.dns_cache_timeout = va_arg(param, long);
658 case CURLOPT_DNS_USE_GLOBAL_CACHE:
659 /* remember we want this enabled */
660 arg = va_arg(param, long);
661 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
663 case CURLOPT_SSL_CIPHER_LIST:
664 /* set a list of cipher we want to use in the SSL connection */
665 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
666 va_arg(param, char *));
669 case CURLOPT_RANDOM_FILE:
671 * This is the path name to a file that contains random data to seed
672 * the random SSL stuff with. The file is only used for reading.
674 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
675 va_arg(param, char *));
677 case CURLOPT_EGDSOCKET:
679 * The Entropy Gathering Daemon socket pathname
681 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
682 va_arg(param, char *));
684 case CURLOPT_MAXCONNECTS:
686 * Set the absolute number of maximum simultaneous alive connection that
687 * libcurl is allowed to have.
689 data->set.maxconnects = va_arg(param, long);
691 case CURLOPT_FORBID_REUSE:
693 * When this transfer is done, it must not be left to be reused by a
694 * subsequent transfer but shall be closed immediately.
696 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
698 case CURLOPT_FRESH_CONNECT:
700 * This transfer shall not use a previously cached connection but
701 * should be made with a fresh new connect!
703 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
705 case CURLOPT_VERBOSE:
707 * Verbose means infof() calls that give a lot of information about
708 * the connection and transfer procedures as well as internal choices.
710 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
714 * Set to include the header in the general data output stream.
716 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
718 case CURLOPT_NOPROGRESS:
720 * Shut off the internal supported progress meter
722 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
723 if(data->set.hide_progress)
724 data->progress.flags |= PGRS_HIDE;
726 data->progress.flags &= ~PGRS_HIDE;
730 * Do not include the body part in the output data stream.
732 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
734 case CURLOPT_FAILONERROR:
736 * Don't output the >=300 error code HTML-page, but instead only
739 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
744 * We want to sent data to the remote host. If this is HTTP, that equals
745 * using the PUT request.
747 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
748 if(data->set.upload) {
749 /* If this is HTTP, PUT is what's needed to "upload" */
750 data->set.httpreq = HTTPREQ_PUT;
751 data->set.opt_no_body = FALSE; /* this is implied */
754 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
755 then this can be changed to HEAD later on) */
756 data->set.httpreq = HTTPREQ_GET;
758 case CURLOPT_FILETIME:
760 * Try to get the file time of the remote document. The time will
761 * later (possibly) become available using curl_easy_getinfo().
763 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
765 case CURLOPT_FTP_CREATE_MISSING_DIRS:
767 * An FTP option that modifies an upload to create missing directories on
770 switch(va_arg(param, long)) {
772 data->set.ftp_create_missing_dirs = 0;
775 data->set.ftp_create_missing_dirs = 1;
778 data->set.ftp_create_missing_dirs = 2;
781 /* reserve other values for future use */
782 result = CURLE_UNKNOWN_OPTION;
786 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
788 * Option that specifies how quickly an server response must be obtained
789 * before it is considered failure. For pingpong protocols.
791 data->set.server_response_timeout = va_arg( param , long ) * 1000;
793 case CURLOPT_TFTP_BLKSIZE:
795 * TFTP option that specifies the block size to use for data transmission
797 data->set.tftp_blksize = va_arg(param, long);
799 case CURLOPT_DIRLISTONLY:
801 * An option that changes the command to one that asks for a list
802 * only, no file info details.
804 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
808 * We want to upload and append to an existing file.
810 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
812 case CURLOPT_FTP_FILEMETHOD:
814 * How do access files over FTP.
816 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
820 * Parse the $HOME/.netrc file
822 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
824 case CURLOPT_NETRC_FILE:
826 * Use this file instead of the $HOME/.netrc file
828 result = setstropt(&data->set.str[STRING_NETRC_FILE],
829 va_arg(param, char *));
831 case CURLOPT_TRANSFERTEXT:
833 * This option was previously named 'FTPASCII'. Renamed to work with
834 * more protocols than merely FTP.
836 * Transfer using ASCII (instead of BINARY).
838 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
840 case CURLOPT_TIMECONDITION:
842 * Set HTTP time condition. This must be one of the defines in the
843 * curl/curl.h header file.
845 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
847 case CURLOPT_TIMEVALUE:
849 * This is the value to compare with the remote document with the
850 * method set with CURLOPT_TIMECONDITION
852 data->set.timevalue = (time_t)va_arg(param, long);
854 case CURLOPT_SSLVERSION:
856 * Set explicit SSL version to try to connect with, as some SSL
857 * implementations are lame.
859 data->set.ssl.version = va_arg(param, long);
862 #ifndef CURL_DISABLE_HTTP
863 case CURLOPT_AUTOREFERER:
865 * Switch on automatic referer that gets set if curl follows locations.
867 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
870 case CURLOPT_ACCEPT_ENCODING:
872 * String to use at the value of Accept-Encoding header.
874 * If the encoding is set to "" we use an Accept-Encoding header that
875 * encompasses all the encodings we support.
876 * If the encoding is set to NULL we don't send an Accept-Encoding header
877 * and ignore an received Content-Encoding header.
880 argptr = va_arg(param, char *);
881 result = setstropt(&data->set.str[STRING_ENCODING],
882 (argptr && !*argptr)?
883 (char *) ALL_CONTENT_ENCODINGS: argptr);
886 case CURLOPT_TRANSFER_ENCODING:
887 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
890 case CURLOPT_FOLLOWLOCATION:
892 * Follow Location: header hints on a HTTP-server.
894 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
897 case CURLOPT_UNRESTRICTED_AUTH:
899 * Send authentication (user+password) when following locations, even when
902 data->set.http_disable_hostname_check_before_authentication =
903 (0 != va_arg(param, long))?TRUE:FALSE;
906 case CURLOPT_MAXREDIRS:
908 * The maximum amount of hops you allow curl to follow Location:
909 * headers. This should mostly be used to detect never-ending loops.
911 data->set.maxredirs = va_arg(param, long);
914 case CURLOPT_POSTREDIR:
917 * Set the behaviour of POST when redirecting
918 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
919 * CURL_REDIR_POST_301 - POST is kept as POST after 301
920 * CURL_REDIR_POST_302 - POST is kept as POST after 302
921 * CURL_REDIR_POST_303 - POST is kept as POST after 303
922 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
923 * other - POST is kept as POST after 301 and 302
925 int postRedir = curlx_sltosi(va_arg(param, long));
926 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
931 /* Does this option serve a purpose anymore? Yes it does, when
932 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
934 if(va_arg(param, long)) {
935 data->set.httpreq = HTTPREQ_POST;
936 data->set.opt_no_body = FALSE; /* this is implied */
939 data->set.httpreq = HTTPREQ_GET;
942 case CURLOPT_COPYPOSTFIELDS:
944 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
945 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
946 * CURLOPT_COPYPOSTFIELDS and not altered later.
948 argptr = va_arg(param, char *);
950 if(!argptr || data->set.postfieldsize == -1)
951 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
954 * Check that requested length does not overflow the size_t type.
957 if((data->set.postfieldsize < 0) ||
958 ((sizeof(curl_off_t) != sizeof(size_t)) &&
959 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
960 result = CURLE_OUT_OF_MEMORY;
964 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
966 /* Allocate even when size == 0. This satisfies the need of possible
967 later address compare to detect the COPYPOSTFIELDS mode, and
968 to mark that postfields is used rather than read function or
971 p = malloc((size_t)(data->set.postfieldsize?
972 data->set.postfieldsize:1));
975 result = CURLE_OUT_OF_MEMORY;
977 if(data->set.postfieldsize)
978 memcpy(p, argptr, (size_t)data->set.postfieldsize);
980 data->set.str[STRING_COPYPOSTFIELDS] = p;
985 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
986 data->set.httpreq = HTTPREQ_POST;
989 case CURLOPT_POSTFIELDS:
991 * Like above, but use static data instead of copying it.
993 data->set.postfields = va_arg(param, void *);
994 /* Release old copied data. */
995 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
996 data->set.httpreq = HTTPREQ_POST;
999 case CURLOPT_POSTFIELDSIZE:
1001 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1002 * figure it out. Enables binary posts.
1004 bigsize = va_arg(param, long);
1006 if(data->set.postfieldsize < bigsize &&
1007 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1008 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1009 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1010 data->set.postfields = NULL;
1013 data->set.postfieldsize = bigsize;
1016 case CURLOPT_POSTFIELDSIZE_LARGE:
1018 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1019 * figure it out. Enables binary posts.
1021 bigsize = va_arg(param, curl_off_t);
1023 if(data->set.postfieldsize < bigsize &&
1024 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1025 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1026 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1027 data->set.postfields = NULL;
1030 data->set.postfieldsize = bigsize;
1033 case CURLOPT_HTTPPOST:
1035 * Set to make us do HTTP POST
1037 data->set.httppost = va_arg(param, struct curl_httppost *);
1038 data->set.httpreq = HTTPREQ_POST_FORM;
1039 data->set.opt_no_body = FALSE; /* this is implied */
1042 case CURLOPT_REFERER:
1044 * String to set in the HTTP Referer: field.
1046 if(data->change.referer_alloc) {
1047 Curl_safefree(data->change.referer);
1048 data->change.referer_alloc = FALSE;
1050 result = setstropt(&data->set.str[STRING_SET_REFERER],
1051 va_arg(param, char *));
1052 data->change.referer = data->set.str[STRING_SET_REFERER];
1055 case CURLOPT_USERAGENT:
1057 * String to use in the HTTP User-Agent field
1059 result = setstropt(&data->set.str[STRING_USERAGENT],
1060 va_arg(param, char *));
1063 case CURLOPT_HTTPHEADER:
1065 * Set a list with HTTP headers to use (or replace internals with)
1067 data->set.headers = va_arg(param, struct curl_slist *);
1070 case CURLOPT_HTTP200ALIASES:
1072 * Set a list of aliases for HTTP 200 in response header
1074 data->set.http200aliases = va_arg(param, struct curl_slist *);
1077 #if !defined(CURL_DISABLE_COOKIES)
1078 case CURLOPT_COOKIE:
1080 * Cookie string to send to the remote server in the request.
1082 result = setstropt(&data->set.str[STRING_COOKIE],
1083 va_arg(param, char *));
1086 case CURLOPT_COOKIEFILE:
1088 * Set cookie file to read and parse. Can be used multiple times.
1090 argptr = (char *)va_arg(param, void *);
1092 struct curl_slist *cl;
1093 /* append the cookie file name to the list of file names, and deal with
1095 cl = curl_slist_append(data->change.cookielist, argptr);
1097 curl_slist_free_all(data->change.cookielist);
1098 data->change.cookielist = NULL;
1099 return CURLE_OUT_OF_MEMORY;
1101 data->change.cookielist = cl; /* store the list for later use */
1105 case CURLOPT_COOKIEJAR:
1107 * Set cookie file name to dump all cookies to when we're done.
1109 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1110 va_arg(param, char *));
1113 * Activate the cookie parser. This may or may not already
1116 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1117 data->set.cookiesession);
1120 case CURLOPT_COOKIESESSION:
1122 * Set this option to TRUE to start a new "cookie session". It will
1123 * prevent the forthcoming read-cookies-from-file actions to accept
1124 * cookies that are marked as being session cookies, as they belong to a
1127 * In the original Netscape cookie spec, "session cookies" are cookies
1128 * with no expire date set. RFC2109 describes the same action if no
1129 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1130 * a 'Discard' action that can enforce the discard even for cookies that
1133 * We run mostly with the original cookie spec, as hardly anyone implements
1136 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1139 case CURLOPT_COOKIELIST:
1140 argptr = va_arg(param, char *);
1145 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1147 if(Curl_raw_equal(argptr, "ALL")) {
1148 /* clear all cookies */
1149 Curl_cookie_clearall(data->cookies);
1151 else if(Curl_raw_equal(argptr, "SESS")) {
1152 /* clear session cookies */
1153 Curl_cookie_clearsess(data->cookies);
1155 else if(Curl_raw_equal(argptr, "FLUSH")) {
1156 /* flush cookies to file */
1157 Curl_flush_cookies(data, 0);
1161 /* if cookie engine was not running, activate it */
1162 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1164 argptr = strdup(argptr);
1166 result = CURLE_OUT_OF_MEMORY;
1170 if(checkprefix("Set-Cookie:", argptr))
1171 /* HTTP Header format line */
1172 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1175 /* Netscape format line */
1176 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1181 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1184 #endif /* CURL_DISABLE_COOKIES */
1186 case CURLOPT_HTTPGET:
1188 * Set to force us do HTTP GET
1190 if(va_arg(param, long)) {
1191 data->set.httpreq = HTTPREQ_GET;
1192 data->set.upload = FALSE; /* switch off upload */
1193 data->set.opt_no_body = FALSE; /* this is implied */
1197 case CURLOPT_HTTP_VERSION:
1199 * This sets a requested HTTP version to be used. The value is one of
1200 * the listed enums in curl/curl.h.
1202 arg = va_arg(param, long);
1204 if(arg == CURL_HTTP_VERSION_2_0)
1205 return CURLE_UNSUPPORTED_PROTOCOL;
1207 data->set.httpversion = arg;
1210 case CURLOPT_HTTPAUTH:
1212 * Set HTTP Authentication type BITMASK.
1217 unsigned long auth = va_arg(param, unsigned long);
1219 if(auth == CURLAUTH_NONE) {
1220 data->set.httpauth = auth;
1224 /* the DIGEST_IE bit is only used to set a special marker, for all the
1225 rest we need to handle it as normal DIGEST */
1226 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1228 if(auth & CURLAUTH_DIGEST_IE) {
1229 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1230 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1233 /* switch off bits we can't support */
1235 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1236 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1237 #elif !defined(NTLM_WB_ENABLED)
1238 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1240 #ifndef USE_HTTP_NEGOTIATE
1241 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1245 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1248 while(bitcheck < 31) {
1249 if(auth & (1UL << bitcheck++)) {
1255 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1257 data->set.httpauth = auth;
1261 case CURLOPT_EXPECT_100_TIMEOUT_MS:
1263 * Time to wait for a response to a HTTP request containing an
1264 * Expect: 100-continue header before sending the data anyway.
1266 data->set.expect_100_timeout = va_arg(param, long);
1269 #endif /* CURL_DISABLE_HTTP */
1271 case CURLOPT_CUSTOMREQUEST:
1273 * Set a custom string to use as request
1275 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1276 va_arg(param, char *));
1279 data->set.httpreq = HTTPREQ_CUSTOM;
1280 here, we continue as if we were using the already set type
1281 and this just changes the actual request keyword */
1284 #ifndef CURL_DISABLE_PROXY
1285 case CURLOPT_HTTPPROXYTUNNEL:
1287 * Tunnel operations through the proxy instead of normal proxy use
1289 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1292 case CURLOPT_PROXYPORT:
1294 * Explicitly set HTTP proxy port number.
1296 data->set.proxyport = va_arg(param, long);
1299 case CURLOPT_PROXYAUTH:
1301 * Set HTTP Authentication type BITMASK.
1306 unsigned long auth = va_arg(param, unsigned long);
1308 if(auth == CURLAUTH_NONE) {
1309 data->set.proxyauth = auth;
1313 /* the DIGEST_IE bit is only used to set a special marker, for all the
1314 rest we need to handle it as normal DIGEST */
1315 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1317 if(auth & CURLAUTH_DIGEST_IE) {
1318 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1319 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1321 /* switch off bits we can't support */
1323 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1324 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1325 #elif !defined(NTLM_WB_ENABLED)
1326 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1328 #ifndef USE_HTTP_NEGOTIATE
1329 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1333 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1336 while(bitcheck < 31) {
1337 if(auth & (1UL << bitcheck++)) {
1343 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1345 data->set.proxyauth = auth;
1351 * Set proxy server:port to use as HTTP proxy.
1353 * If the proxy is set to "" we explicitly say that we don't want to use a
1354 * proxy (even though there might be environment variables saying so).
1356 * Setting it to NULL, means no proxy but allows the environment variables
1359 result = setstropt(&data->set.str[STRING_PROXY],
1360 va_arg(param, char *));
1363 case CURLOPT_PROXYTYPE:
1365 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1367 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1370 case CURLOPT_PROXY_TRANSFER_MODE:
1372 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1374 switch (va_arg(param, long)) {
1376 data->set.proxy_transfer_mode = FALSE;
1379 data->set.proxy_transfer_mode = TRUE;
1382 /* reserve other values for future use */
1383 result = CURLE_UNKNOWN_OPTION;
1387 #endif /* CURL_DISABLE_PROXY */
1389 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1390 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1392 * Set gssapi service name
1394 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1395 va_arg(param, char *));
1398 case CURLOPT_SOCKS5_GSSAPI_NEC:
1400 * set flag for nec socks5 support
1402 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1406 case CURLOPT_WRITEHEADER:
1408 * Custom pointer to pass the header write callback function
1410 data->set.writeheader = (void *)va_arg(param, void *);
1412 case CURLOPT_ERRORBUFFER:
1414 * Error buffer provided by the caller to get the human readable
1417 data->set.errorbuffer = va_arg(param, char *);
1421 * FILE pointer to write to. Or possibly
1422 * used as argument to the write callback.
1424 data->set.out = va_arg(param, void *);
1426 case CURLOPT_FTPPORT:
1428 * Use FTP PORT, this also specifies which IP address to use
1430 result = setstropt(&data->set.str[STRING_FTPPORT],
1431 va_arg(param, char *));
1432 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1436 case CURLOPT_FTP_USE_EPRT:
1437 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1440 case CURLOPT_FTP_USE_EPSV:
1441 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1444 case CURLOPT_FTP_USE_PRET:
1445 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1448 case CURLOPT_FTP_SSL_CCC:
1449 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1452 case CURLOPT_FTP_SKIP_PASV_IP:
1454 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1455 * bypass of the IP address in PASV responses.
1457 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1460 case CURLOPT_INFILE:
1462 * FILE pointer to read the file to be uploaded from. Or possibly
1463 * used as argument to the read callback.
1465 data->set.in = va_arg(param, void *);
1467 case CURLOPT_INFILESIZE:
1469 * If known, this should inform curl about the file size of the
1470 * to-be-uploaded file.
1472 data->set.infilesize = va_arg(param, long);
1474 case CURLOPT_INFILESIZE_LARGE:
1476 * If known, this should inform curl about the file size of the
1477 * to-be-uploaded file.
1479 data->set.infilesize = va_arg(param, curl_off_t);
1481 case CURLOPT_LOW_SPEED_LIMIT:
1483 * The low speed limit that if transfers are below this for
1484 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1486 data->set.low_speed_limit=va_arg(param, long);
1488 case CURLOPT_MAX_SEND_SPEED_LARGE:
1490 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1491 * bytes per second the transfer is throttled..
1493 data->set.max_send_speed=va_arg(param, curl_off_t);
1495 case CURLOPT_MAX_RECV_SPEED_LARGE:
1497 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1498 * second the transfer is throttled..
1500 data->set.max_recv_speed=va_arg(param, curl_off_t);
1502 case CURLOPT_LOW_SPEED_TIME:
1504 * The low speed time that if transfers are below the set
1505 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1507 data->set.low_speed_time=va_arg(param, long);
1513 if(data->change.url_alloc) {
1514 /* the already set URL is allocated, free it first! */
1515 Curl_safefree(data->change.url);
1516 data->change.url_alloc = FALSE;
1518 result = setstropt(&data->set.str[STRING_SET_URL],
1519 va_arg(param, char *));
1520 data->change.url = data->set.str[STRING_SET_URL];
1524 * The port number to use when getting the URL
1526 data->set.use_port = va_arg(param, long);
1528 case CURLOPT_TIMEOUT:
1530 * The maximum time you allow curl to use for a single transfer
1533 data->set.timeout = va_arg(param, long) * 1000L;
1536 case CURLOPT_TIMEOUT_MS:
1537 data->set.timeout = va_arg(param, long);
1540 case CURLOPT_CONNECTTIMEOUT:
1542 * The maximum time you allow curl to use to connect.
1544 data->set.connecttimeout = va_arg(param, long) * 1000L;
1547 case CURLOPT_CONNECTTIMEOUT_MS:
1548 data->set.connecttimeout = va_arg(param, long);
1551 case CURLOPT_ACCEPTTIMEOUT_MS:
1553 * The maximum time you allow curl to wait for server connect
1555 data->set.accepttimeout = va_arg(param, long);
1558 case CURLOPT_USERPWD:
1560 * user:password to use in the operation
1562 result = setstropt_userpwd(va_arg(param, char *),
1563 &data->set.str[STRING_USERNAME],
1564 &data->set.str[STRING_PASSWORD]);
1567 case CURLOPT_USERNAME:
1569 * authentication user name to use in the operation
1571 result = setstropt(&data->set.str[STRING_USERNAME],
1572 va_arg(param, char *));
1575 case CURLOPT_PASSWORD:
1577 * authentication password to use in the operation
1579 result = setstropt(&data->set.str[STRING_PASSWORD],
1580 va_arg(param, char *));
1583 case CURLOPT_LOGIN_OPTIONS:
1585 * authentication options to use in the operation
1587 result = setstropt(&data->set.str[STRING_OPTIONS],
1588 va_arg(param, char *));
1591 case CURLOPT_XOAUTH2_BEARER:
1593 * XOAUTH2 bearer token to use in the operation
1595 result = setstropt(&data->set.str[STRING_BEARER],
1596 va_arg(param, char *));
1599 case CURLOPT_POSTQUOTE:
1601 * List of RAW FTP commands to use after a transfer
1603 data->set.postquote = va_arg(param, struct curl_slist *);
1605 case CURLOPT_PREQUOTE:
1607 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1609 data->set.prequote = va_arg(param, struct curl_slist *);
1613 * List of RAW FTP commands to use before a transfer
1615 data->set.quote = va_arg(param, struct curl_slist *);
1617 case CURLOPT_RESOLVE:
1619 * List of NAME:[address] names to populate the DNS cache with
1620 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1622 * Names added with this API will remain in the cache until explicitly
1623 * removed or the handle is cleaned up.
1625 * This API can remove any name from the DNS cache, but only entries
1626 * that aren't actually in use right now will be pruned immediately.
1628 data->set.resolve = va_arg(param, struct curl_slist *);
1629 data->change.resolve = data->set.resolve;
1631 case CURLOPT_PROGRESSFUNCTION:
1633 * Progress callback function
1635 data->set.fprogress = va_arg(param, curl_progress_callback);
1636 if(data->set.fprogress)
1637 data->progress.callback = TRUE; /* no longer internal */
1639 data->progress.callback = FALSE; /* NULL enforces internal */
1642 case CURLOPT_XFERINFOFUNCTION:
1644 * Transfer info callback function
1646 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1647 if(data->set.fxferinfo)
1648 data->progress.callback = TRUE; /* no longer internal */
1650 data->progress.callback = FALSE; /* NULL enforces internal */
1654 case CURLOPT_PROGRESSDATA:
1656 * Custom client data to pass to the progress callback
1658 data->set.progress_client = va_arg(param, void *);
1661 #ifndef CURL_DISABLE_PROXY
1662 case CURLOPT_PROXYUSERPWD:
1664 * user:password needed to use the proxy
1666 result = setstropt_userpwd(va_arg(param, char *),
1667 &data->set.str[STRING_PROXYUSERNAME],
1668 &data->set.str[STRING_PROXYPASSWORD]);
1670 case CURLOPT_PROXYUSERNAME:
1672 * authentication user name to use in the operation
1674 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1675 va_arg(param, char *));
1677 case CURLOPT_PROXYPASSWORD:
1679 * authentication password to use in the operation
1681 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1682 va_arg(param, char *));
1684 case CURLOPT_NOPROXY:
1686 * proxy exception list
1688 result = setstropt(&data->set.str[STRING_NOPROXY],
1689 va_arg(param, char *));
1695 * What range of the file you want to transfer
1697 result = setstropt(&data->set.str[STRING_SET_RANGE],
1698 va_arg(param, char *));
1700 case CURLOPT_RESUME_FROM:
1702 * Resume transfer at the give file position
1704 data->set.set_resume_from = va_arg(param, long);
1706 case CURLOPT_RESUME_FROM_LARGE:
1708 * Resume transfer at the give file position
1710 data->set.set_resume_from = va_arg(param, curl_off_t);
1712 case CURLOPT_DEBUGFUNCTION:
1714 * stderr write callback.
1716 data->set.fdebug = va_arg(param, curl_debug_callback);
1718 * if the callback provided is NULL, it'll use the default callback
1721 case CURLOPT_DEBUGDATA:
1723 * Set to a void * that should receive all error writes. This
1724 * defaults to CURLOPT_STDERR for normal operations.
1726 data->set.debugdata = va_arg(param, void *);
1728 case CURLOPT_STDERR:
1730 * Set to a FILE * that should receive all error writes. This
1731 * defaults to stderr for normal operations.
1733 data->set.err = va_arg(param, FILE *);
1735 data->set.err = stderr;
1737 case CURLOPT_HEADERFUNCTION:
1739 * Set header write callback
1741 data->set.fwrite_header = va_arg(param, curl_write_callback);
1743 case CURLOPT_WRITEFUNCTION:
1745 * Set data write callback
1747 data->set.fwrite_func = va_arg(param, curl_write_callback);
1748 if(!data->set.fwrite_func) {
1749 data->set.is_fwrite_set = 0;
1750 /* When set to NULL, reset to our internal default function */
1751 data->set.fwrite_func = (curl_write_callback)fwrite;
1754 data->set.is_fwrite_set = 1;
1756 case CURLOPT_READFUNCTION:
1758 * Read data callback
1760 data->set.fread_func = va_arg(param, curl_read_callback);
1761 if(!data->set.fread_func) {
1762 data->set.is_fread_set = 0;
1763 /* When set to NULL, reset to our internal default function */
1764 data->set.fread_func = (curl_read_callback)fread;
1767 data->set.is_fread_set = 1;
1769 case CURLOPT_SEEKFUNCTION:
1771 * Seek callback. Might be NULL.
1773 data->set.seek_func = va_arg(param, curl_seek_callback);
1775 case CURLOPT_SEEKDATA:
1777 * Seek control callback. Might be NULL.
1779 data->set.seek_client = va_arg(param, void *);
1781 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1783 * "Convert from network encoding" callback
1785 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1787 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1789 * "Convert to network encoding" callback
1791 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1793 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1795 * "Convert from UTF-8 encoding" callback
1797 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1799 case CURLOPT_IOCTLFUNCTION:
1801 * I/O control callback. Might be NULL.
1803 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1805 case CURLOPT_IOCTLDATA:
1807 * I/O control data pointer. Might be NULL.
1809 data->set.ioctl_client = va_arg(param, void *);
1811 case CURLOPT_SSLCERT:
1813 * String that holds file name of the SSL certificate to use
1815 result = setstropt(&data->set.str[STRING_CERT],
1816 va_arg(param, char *));
1818 case CURLOPT_SSLCERTTYPE:
1820 * String that holds file type of the SSL certificate to use
1822 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1823 va_arg(param, char *));
1825 case CURLOPT_SSLKEY:
1827 * String that holds file name of the SSL key to use
1829 result = setstropt(&data->set.str[STRING_KEY],
1830 va_arg(param, char *));
1832 case CURLOPT_SSLKEYTYPE:
1834 * String that holds file type of the SSL key to use
1836 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1837 va_arg(param, char *));
1839 case CURLOPT_KEYPASSWD:
1841 * String that holds the SSL or SSH private key password.
1843 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1844 va_arg(param, char *));
1846 case CURLOPT_SSLENGINE:
1848 * String that holds the SSL crypto engine.
1850 argptr = va_arg(param, char *);
1851 if(argptr && argptr[0])
1852 result = Curl_ssl_set_engine(data, argptr);
1855 case CURLOPT_SSLENGINE_DEFAULT:
1857 * flag to set engine as default.
1859 result = Curl_ssl_set_engine_default(data);
1863 * Kludgy option to enable CRLF conversions. Subject for removal.
1865 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1868 case CURLOPT_INTERFACE:
1870 * Set what interface or address/hostname to bind the socket to when
1871 * performing an operation and thus what from-IP your connection will use.
1873 result = setstropt(&data->set.str[STRING_DEVICE],
1874 va_arg(param, char *));
1876 case CURLOPT_LOCALPORT:
1878 * Set what local port to bind the socket to when performing an operation.
1880 data->set.localport = curlx_sltous(va_arg(param, long));
1882 case CURLOPT_LOCALPORTRANGE:
1884 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1886 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1888 case CURLOPT_KRBLEVEL:
1890 * A string that defines the kerberos security level.
1892 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1893 va_arg(param, char *));
1894 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1896 case CURLOPT_GSSAPI_DELEGATION:
1898 * GSSAPI credential delegation
1900 data->set.gssapi_delegation = va_arg(param, long);
1902 case CURLOPT_SSL_VERIFYPEER:
1904 * Enable peer SSL verifying.
1906 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1908 case CURLOPT_SSL_VERIFYHOST:
1910 * Enable verification of the host name in the peer certificate
1912 arg = va_arg(param, long);
1914 /* Obviously people are not reading documentation and too many thought
1915 this argument took a boolean when it wasn't and misused it. We thus ban
1916 1 as a sensible input and we warn about its use. Then we only have the
1917 2 action internally stored as TRUE. */
1920 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1921 return CURLE_BAD_FUNCTION_ARGUMENT;
1924 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1927 /* since these two options are only possible to use on an OpenSSL-
1928 powered libcurl we #ifdef them on this condition so that libcurls
1929 built against other SSL libs will return a proper error when trying
1930 to set this option! */
1931 case CURLOPT_SSL_CTX_FUNCTION:
1933 * Set a SSL_CTX callback
1935 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1937 case CURLOPT_SSL_CTX_DATA:
1939 * Set a SSL_CTX callback parameter pointer
1941 data->set.ssl.fsslctxp = va_arg(param, void *);
1944 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1946 case CURLOPT_CERTINFO:
1947 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1950 case CURLOPT_CAINFO:
1952 * Set CA info for SSL connection. Specify file name of the CA certificate
1954 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1955 va_arg(param, char *));
1957 case CURLOPT_CAPATH:
1959 * Set CA path info for SSL connection. Specify directory name of the CA
1960 * certificates which have been prepared using openssl c_rehash utility.
1962 /* This does not work on windows. */
1963 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1964 va_arg(param, char *));
1966 case CURLOPT_CRLFILE:
1968 * Set CRL file info for SSL connection. Specify file name of the CRL
1969 * to check certificates revocation
1971 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1972 va_arg(param, char *));
1974 case CURLOPT_ISSUERCERT:
1976 * Set Issuer certificate file
1977 * to check certificates issuer
1979 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1980 va_arg(param, char *));
1982 case CURLOPT_TELNETOPTIONS:
1984 * Set a linked list of telnet options
1986 data->set.telnet_options = va_arg(param, struct curl_slist *);
1989 case CURLOPT_BUFFERSIZE:
1991 * The application kindly asks for a differently sized receive buffer.
1992 * If it seems reasonable, we'll use it.
1994 data->set.buffer_size = va_arg(param, long);
1996 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1997 (data->set.buffer_size < 1))
1998 data->set.buffer_size = 0; /* huge internal default */
2002 case CURLOPT_NOSIGNAL:
2004 * The application asks not to set any signal() or alarm() handlers,
2005 * even when using a timeout.
2007 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2012 struct Curl_share *set;
2013 set = va_arg(param, struct Curl_share *);
2015 /* disconnect from old share, if any */
2017 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2019 if(data->dns.hostcachetype == HCACHE_SHARED) {
2020 data->dns.hostcache = NULL;
2021 data->dns.hostcachetype = HCACHE_NONE;
2024 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2025 if(data->share->cookies == data->cookies)
2026 data->cookies = NULL;
2029 if(data->share->sslsession == data->state.session)
2030 data->state.session = NULL;
2032 data->share->dirty--;
2034 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2038 /* use new share if it set */
2042 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2044 data->share->dirty++;
2046 if(data->share->hostcache) {
2047 /* use shared host cache */
2048 data->dns.hostcache = data->share->hostcache;
2049 data->dns.hostcachetype = HCACHE_SHARED;
2051 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2052 if(data->share->cookies) {
2053 /* use shared cookie list, first free own one if any */
2055 Curl_cookie_cleanup(data->cookies);
2056 /* enable cookies since we now use a share that uses cookies! */
2057 data->cookies = data->share->cookies;
2059 #endif /* CURL_DISABLE_HTTP */
2060 if(data->share->sslsession) {
2061 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2062 data->state.session = data->share->sslsession;
2064 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2067 /* check for host cache not needed,
2068 * it will be done by curl_easy_perform */
2072 case CURLOPT_PRIVATE:
2074 * Set private data pointer.
2076 data->set.private_data = va_arg(param, void *);
2079 case CURLOPT_MAXFILESIZE:
2081 * Set the maximum size of a file to download.
2083 data->set.max_filesize = va_arg(param, long);
2087 case CURLOPT_USE_SSL:
2089 * Make transfers attempt to use SSL/TLS.
2091 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2094 case CURLOPT_SSL_OPTIONS:
2095 arg = va_arg(param, long);
2096 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2100 case CURLOPT_FTPSSLAUTH:
2102 * Set a specific auth for FTP-SSL transfers.
2104 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2107 case CURLOPT_IPRESOLVE:
2108 data->set.ipver = va_arg(param, long);
2111 case CURLOPT_MAXFILESIZE_LARGE:
2113 * Set the maximum size of a file to download.
2115 data->set.max_filesize = va_arg(param, curl_off_t);
2118 case CURLOPT_TCP_NODELAY:
2120 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2123 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2126 case CURLOPT_FTP_ACCOUNT:
2127 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2128 va_arg(param, char *));
2131 case CURLOPT_IGNORE_CONTENT_LENGTH:
2132 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2135 case CURLOPT_CONNECT_ONLY:
2137 * No data transfer, set up connection and let application use the socket
2139 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2142 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2143 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2144 va_arg(param, char *));
2147 case CURLOPT_SOCKOPTFUNCTION:
2149 * socket callback function: called after socket() but before connect()
2151 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2154 case CURLOPT_SOCKOPTDATA:
2156 * socket callback data pointer. Might be NULL.
2158 data->set.sockopt_client = va_arg(param, void *);
2161 case CURLOPT_OPENSOCKETFUNCTION:
2163 * open/create socket callback function: called instead of socket(),
2166 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2169 case CURLOPT_OPENSOCKETDATA:
2171 * socket callback data pointer. Might be NULL.
2173 data->set.opensocket_client = va_arg(param, void *);
2176 case CURLOPT_CLOSESOCKETFUNCTION:
2178 * close socket callback function: called instead of close()
2179 * when shutting down a connection
2181 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2184 case CURLOPT_CLOSESOCKETDATA:
2186 * socket callback data pointer. Might be NULL.
2188 data->set.closesocket_client = va_arg(param, void *);
2191 case CURLOPT_SSL_SESSIONID_CACHE:
2192 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2196 /* we only include SSH options if explicitly built to support SSH */
2197 case CURLOPT_SSH_AUTH_TYPES:
2198 data->set.ssh_auth_types = va_arg(param, long);
2201 case CURLOPT_SSH_PUBLIC_KEYFILE:
2203 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2205 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2206 va_arg(param, char *));
2209 case CURLOPT_SSH_PRIVATE_KEYFILE:
2211 * Use this file instead of the $HOME/.ssh/id_dsa file
2213 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2214 va_arg(param, char *));
2216 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2218 * Option to allow for the MD5 of the host public key to be checked
2219 * for validation purposes.
2221 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2222 va_arg(param, char *));
2224 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2225 case CURLOPT_SSH_KNOWNHOSTS:
2227 * Store the file name to read known hosts from.
2229 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2230 va_arg(param, char *));
2233 case CURLOPT_SSH_KEYFUNCTION:
2234 /* setting to NULL is fine since the ssh.c functions themselves will
2235 then rever to use the internal default */
2236 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2239 case CURLOPT_SSH_KEYDATA:
2241 * Custom client data to pass to the SSH keyfunc callback
2243 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2245 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2247 #endif /* USE_LIBSSH2 */
2249 case CURLOPT_HTTP_TRANSFER_DECODING:
2251 * disable libcurl transfer encoding is used
2253 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2256 case CURLOPT_HTTP_CONTENT_DECODING:
2258 * raw data passed to the application when content encoding is used
2260 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2263 case CURLOPT_NEW_FILE_PERMS:
2265 * Uses these permissions instead of 0644
2267 data->set.new_file_perms = va_arg(param, long);
2270 case CURLOPT_NEW_DIRECTORY_PERMS:
2272 * Uses these permissions instead of 0755
2274 data->set.new_directory_perms = va_arg(param, long);
2277 case CURLOPT_ADDRESS_SCOPE:
2279 * We always get longs when passed plain numericals, but for this value we
2280 * know that an unsigned int will always hold the value so we blindly
2281 * typecast to this type
2283 data->set.scope = curlx_sltoui(va_arg(param, long));
2286 case CURLOPT_PROTOCOLS:
2287 /* set the bitmask for the protocols that are allowed to be used for the
2288 transfer, which thus helps the app which takes URLs from users or other
2289 external inputs and want to restrict what protocol(s) to deal
2290 with. Defaults to CURLPROTO_ALL. */
2291 data->set.allowed_protocols = va_arg(param, long);
2294 case CURLOPT_REDIR_PROTOCOLS:
2295 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2296 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2297 to be set in both bitmasks to be allowed to get redirected to. Defaults
2298 to all protocols except FILE and SCP. */
2299 data->set.redir_protocols = va_arg(param, long);
2302 case CURLOPT_MAIL_FROM:
2303 /* Set the SMTP mail originator */
2304 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2305 va_arg(param, char *));
2308 case CURLOPT_MAIL_AUTH:
2309 /* Set the SMTP auth originator */
2310 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2311 va_arg(param, char *));
2314 case CURLOPT_MAIL_RCPT:
2315 /* Set the list of mail recipients */
2316 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2319 case CURLOPT_SASL_IR:
2320 /* Enable/disable SASL initial response */
2321 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2324 case CURLOPT_RTSP_REQUEST:
2327 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2328 * Would this be better if the RTSPREQ_* were just moved into here?
2330 long curl_rtspreq = va_arg(param, long);
2331 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2332 switch(curl_rtspreq) {
2333 case CURL_RTSPREQ_OPTIONS:
2334 rtspreq = RTSPREQ_OPTIONS;
2337 case CURL_RTSPREQ_DESCRIBE:
2338 rtspreq = RTSPREQ_DESCRIBE;
2341 case CURL_RTSPREQ_ANNOUNCE:
2342 rtspreq = RTSPREQ_ANNOUNCE;
2345 case CURL_RTSPREQ_SETUP:
2346 rtspreq = RTSPREQ_SETUP;
2349 case CURL_RTSPREQ_PLAY:
2350 rtspreq = RTSPREQ_PLAY;
2353 case CURL_RTSPREQ_PAUSE:
2354 rtspreq = RTSPREQ_PAUSE;
2357 case CURL_RTSPREQ_TEARDOWN:
2358 rtspreq = RTSPREQ_TEARDOWN;
2361 case CURL_RTSPREQ_GET_PARAMETER:
2362 rtspreq = RTSPREQ_GET_PARAMETER;
2365 case CURL_RTSPREQ_SET_PARAMETER:
2366 rtspreq = RTSPREQ_SET_PARAMETER;
2369 case CURL_RTSPREQ_RECORD:
2370 rtspreq = RTSPREQ_RECORD;
2373 case CURL_RTSPREQ_RECEIVE:
2374 rtspreq = RTSPREQ_RECEIVE;
2377 rtspreq = RTSPREQ_NONE;
2380 data->set.rtspreq = rtspreq;
2385 case CURLOPT_RTSP_SESSION_ID:
2387 * Set the RTSP Session ID manually. Useful if the application is
2388 * resuming a previously established RTSP session
2390 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2391 va_arg(param, char *));
2394 case CURLOPT_RTSP_STREAM_URI:
2396 * Set the Stream URI for the RTSP request. Unless the request is
2397 * for generic server options, the application will need to set this.
2399 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2400 va_arg(param, char *));
2403 case CURLOPT_RTSP_TRANSPORT:
2405 * The content of the Transport: header for the RTSP request
2407 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2408 va_arg(param, char *));
2411 case CURLOPT_RTSP_CLIENT_CSEQ:
2413 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2414 * application is resuming a previously broken connection. The CSEQ
2415 * will increment from this new number henceforth.
2417 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2420 case CURLOPT_RTSP_SERVER_CSEQ:
2421 /* Same as the above, but for server-initiated requests */
2422 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2425 case CURLOPT_INTERLEAVEDATA:
2426 data->set.rtp_out = va_arg(param, void *);
2428 case CURLOPT_INTERLEAVEFUNCTION:
2429 /* Set the user defined RTP write function */
2430 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2433 case CURLOPT_WILDCARDMATCH:
2434 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2436 case CURLOPT_CHUNK_BGN_FUNCTION:
2437 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2439 case CURLOPT_CHUNK_END_FUNCTION:
2440 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2442 case CURLOPT_FNMATCH_FUNCTION:
2443 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2445 case CURLOPT_CHUNK_DATA:
2446 data->wildcard.customptr = va_arg(param, void *);
2448 case CURLOPT_FNMATCH_DATA:
2449 data->set.fnmatch_data = va_arg(param, void *);
2452 case CURLOPT_TLSAUTH_USERNAME:
2453 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2454 va_arg(param, char *));
2455 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2456 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2458 case CURLOPT_TLSAUTH_PASSWORD:
2459 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2460 va_arg(param, char *));
2461 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2462 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2464 case CURLOPT_TLSAUTH_TYPE:
2465 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2466 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2468 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2471 case CURLOPT_DNS_SERVERS:
2472 result = Curl_set_dns_servers(data, va_arg(param, char *));
2474 case CURLOPT_DNS_INTERFACE:
2475 result = Curl_set_dns_interface(data, va_arg(param, char *));
2477 case CURLOPT_DNS_LOCAL_IP4:
2478 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2480 case CURLOPT_DNS_LOCAL_IP6:
2481 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2484 case CURLOPT_TCP_KEEPALIVE:
2485 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2487 case CURLOPT_TCP_KEEPIDLE:
2488 data->set.tcp_keepidle = va_arg(param, long);
2490 case CURLOPT_TCP_KEEPINTVL:
2491 data->set.tcp_keepintvl = va_arg(param, long);
2493 case CURLOPT_SSL_ENABLE_NPN:
2494 data->set.ssl_enable_npn = (0 != va_arg(param, long))?TRUE:FALSE;
2496 case CURLOPT_SSL_ENABLE_ALPN:
2497 data->set.ssl_enable_alpn = (0 != va_arg(param, long))?TRUE:FALSE;
2501 /* unknown tag and its companion, just ignore: */
2502 result = CURLE_UNKNOWN_OPTION;
2509 static void conn_free(struct connectdata *conn)
2514 /* possible left-overs from the async name resolvers */
2515 Curl_resolver_cancel(conn);
2517 /* close the SSL stuff before we close any sockets since they will/may
2518 write to the sockets */
2519 Curl_ssl_close(conn, FIRSTSOCKET);
2520 Curl_ssl_close(conn, SECONDARYSOCKET);
2522 /* close possibly still open sockets */
2523 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2524 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2525 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2526 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2527 if(CURL_SOCKET_BAD != conn->tempsock[0])
2528 Curl_closesocket(conn, conn->tempsock[0]);
2529 if(CURL_SOCKET_BAD != conn->tempsock[1])
2530 Curl_closesocket(conn, conn->tempsock[1]);
2532 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2533 Curl_ntlm_wb_cleanup(conn);
2536 Curl_safefree(conn->user);
2537 Curl_safefree(conn->passwd);
2538 Curl_safefree(conn->xoauth2_bearer);
2539 Curl_safefree(conn->options);
2540 Curl_safefree(conn->proxyuser);
2541 Curl_safefree(conn->proxypasswd);
2542 Curl_safefree(conn->allocptr.proxyuserpwd);
2543 Curl_safefree(conn->allocptr.uagent);
2544 Curl_safefree(conn->allocptr.userpwd);
2545 Curl_safefree(conn->allocptr.accept_encoding);
2546 Curl_safefree(conn->allocptr.te);
2547 Curl_safefree(conn->allocptr.rangeline);
2548 Curl_safefree(conn->allocptr.ref);
2549 Curl_safefree(conn->allocptr.host);
2550 Curl_safefree(conn->allocptr.cookiehost);
2551 Curl_safefree(conn->allocptr.rtsp_transport);
2552 Curl_safefree(conn->trailer);
2553 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2554 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2555 Curl_safefree(conn->master_buffer);
2557 Curl_llist_destroy(conn->send_pipe, NULL);
2558 Curl_llist_destroy(conn->recv_pipe, NULL);
2560 conn->send_pipe = NULL;
2561 conn->recv_pipe = NULL;
2563 Curl_safefree(conn->localdev);
2564 Curl_free_ssl_config(&conn->ssl_config);
2566 free(conn); /* free all the connection oriented data */
2569 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2571 struct SessionHandle *data;
2573 return CURLE_OK; /* this is closed and fine already */
2577 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2581 if(conn->dns_entry != NULL) {
2582 Curl_resolv_unlock(data, conn->dns_entry);
2583 conn->dns_entry = NULL;
2586 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2589 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2590 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2592 /* Authentication data is a mix of connection-related and sessionhandle-
2593 related stuff. NTLM is connection-related so when we close the shop
2597 data->state.authhost.done = FALSE;
2598 data->state.authhost.picked =
2599 data->state.authhost.want;
2602 if(has_proxy_ntlm) {
2603 data->state.authproxy.done = FALSE;
2604 data->state.authproxy.picked =
2605 data->state.authproxy.want;
2608 if(has_host_ntlm || has_proxy_ntlm)
2609 data->state.authproblem = FALSE;
2612 /* Cleanup NTLM connection-related data */
2613 Curl_http_ntlm_cleanup(conn);
2615 /* Cleanup possible redirect junk */
2616 if(data->req.newurl) {
2617 free(data->req.newurl);
2618 data->req.newurl = NULL;
2621 if(conn->handler->disconnect)
2622 /* This is set if protocol-specific cleanups should be made */
2623 conn->handler->disconnect(conn, dead_connection);
2625 /* unlink ourselves! */
2626 infof(data, "Closing connection %ld\n", conn->connection_id);
2627 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2629 #if defined(USE_LIBIDN)
2630 if(conn->host.encalloc)
2631 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2632 with idn_free() since this was allocated
2634 if(conn->proxy.encalloc)
2635 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2636 freed with idn_free() since this was
2637 allocated by libidn */
2638 #elif defined(USE_WIN32_IDN)
2639 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2640 idn_free() since this was allocated by
2641 curl_win32_idn_to_ascii */
2642 if(conn->proxy.encalloc)
2643 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2644 with idn_free() since this was allocated by
2645 curl_win32_idn_to_ascii */
2648 Curl_ssl_close(conn, FIRSTSOCKET);
2650 /* Indicate to all handles on the pipe that we're dead */
2651 if(Curl_multi_pipeline_enabled(data->multi)) {
2652 signalPipeClose(conn->send_pipe, TRUE);
2653 signalPipeClose(conn->recv_pipe, TRUE);
2658 Curl_speedinit(data);
2664 * This function should return TRUE if the socket is to be assumed to
2665 * be dead. Most commonly this happens when the server has closed the
2666 * connection due to inactivity.
2668 static bool SocketIsDead(curl_socket_t sock)
2671 bool ret_val = TRUE;
2673 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2681 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2682 const struct connectdata *conn)
2684 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2685 Curl_multi_pipeline_enabled(handle->multi) &&
2686 (handle->set.httpreq == HTTPREQ_GET ||
2687 handle->set.httpreq == HTTPREQ_HEAD) &&
2688 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2694 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2696 return Curl_multi_pipeline_enabled(handle->multi);
2699 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2700 struct curl_llist *pipeline)
2702 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2703 return CURLE_OUT_OF_MEMORY;
2707 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2708 struct curl_llist *pipeline)
2710 struct curl_llist_element *curr;
2712 curr = pipeline->head;
2714 if(curr->ptr == handle) {
2715 Curl_llist_remove(pipeline, curr, NULL);
2716 return 1; /* we removed a handle */
2724 #if 0 /* this code is saved here as it is useful for debugging purposes */
2725 static void Curl_printPipeline(struct curl_llist *pipeline)
2727 struct curl_llist_element *curr;
2729 curr = pipeline->head;
2731 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2732 infof(data, "Handle in pipeline: %s\n", data->state.path);
2738 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2740 struct curl_llist_element *curr = pipeline->head;
2742 return (struct SessionHandle *) curr->ptr;
2748 /* remove the specified connection from all (possible) pipelines and related
2750 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2751 struct connectdata *conn)
2753 bool recv_head = (conn->readchannel_inuse &&
2754 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2756 bool send_head = (conn->writechannel_inuse &&
2757 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2759 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2760 conn->readchannel_inuse = FALSE;
2761 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2762 conn->writechannel_inuse = FALSE;
2765 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2767 struct curl_llist_element *curr;
2772 curr = pipeline->head;
2774 struct curl_llist_element *next = curr->next;
2775 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2777 #ifdef DEBUGBUILD /* debug-only code */
2778 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2780 infof(data, "signalPipeClose() found BAAD easy handle\n");
2785 data->state.pipe_broke = TRUE;
2786 Curl_multi_handlePipeBreak(data);
2787 Curl_llist_remove(pipeline, curr, NULL);
2793 * This function finds the connection in the connection
2794 * cache that has been unused for the longest time.
2796 * Returns the pointer to the oldest idle connection, or NULL if none was
2799 static struct connectdata *
2800 find_oldest_idle_connection(struct SessionHandle *data)
2802 struct conncache *bc = data->state.conn_cache;
2803 struct curl_hash_iterator iter;
2804 struct curl_llist_element *curr;
2805 struct curl_hash_element *he;
2809 struct connectdata *conn_candidate = NULL;
2810 struct connectbundle *bundle;
2814 Curl_hash_start_iterate(bc->hash, &iter);
2816 he = Curl_hash_next_element(&iter);
2818 struct connectdata *conn;
2822 curr = bundle->conn_list->head;
2827 /* Set higher score for the age passed since the connection was used */
2828 score = Curl_tvdiff(now, conn->now);
2830 if(score > highscore) {
2832 conn_candidate = conn;
2838 he = Curl_hash_next_element(&iter);
2841 return conn_candidate;
2845 * This function finds the connection in the connection
2846 * bundle that has been unused for the longest time.
2848 * Returns the pointer to the oldest idle connection, or NULL if none was
2851 static struct connectdata *
2852 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2853 struct connectbundle *bundle)
2855 struct curl_llist_element *curr;
2859 struct connectdata *conn_candidate = NULL;
2860 struct connectdata *conn;
2866 curr = bundle->conn_list->head;
2871 /* Set higher score for the age passed since the connection was used */
2872 score = Curl_tvdiff(now, conn->now);
2874 if(score > highscore) {
2876 conn_candidate = conn;
2882 return conn_candidate;
2886 * Given one filled in connection struct (named needle), this function should
2887 * detect if there already is one that has all the significant details
2888 * exactly the same and thus should be used instead.
2890 * If there is a match, this function returns TRUE - and has marked the
2891 * connection as 'in-use'. It must later be called with ConnectionDone() to
2892 * return back to 'idle' (unused) state.
2894 * The force_reuse flag is set if the connection must be used, even if
2895 * the pipelining strategy wants to open a new connection instead of reusing.
2898 ConnectionExists(struct SessionHandle *data,
2899 struct connectdata *needle,
2900 struct connectdata **usethis,
2903 struct connectdata *check;
2904 struct connectdata *chosen = 0;
2905 bool canPipeline = IsPipeliningPossible(data, needle);
2906 bool wantNTLM = (data->state.authhost.want & CURLAUTH_NTLM) ||
2907 (data->state.authhost.want & CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2908 struct connectbundle *bundle;
2910 *force_reuse = FALSE;
2912 /* We can't pipe if the site is blacklisted */
2913 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2914 canPipeline = FALSE;
2917 /* Look up the bundle with all the connections to this
2919 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2922 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2923 size_t best_pipe_len = max_pipe_len;
2924 struct curl_llist_element *curr;
2926 infof(data, "Found bundle for host %s: %p\n",
2927 needle->host.name, (void *)bundle);
2929 /* We can't pipe if we don't know anything about the server */
2930 if(canPipeline && !bundle->server_supports_pipelining) {
2931 infof(data, "Server doesn't support pipelining\n");
2932 canPipeline = FALSE;
2935 curr = bundle->conn_list->head;
2938 bool credentialsMatch = FALSE;
2942 * Note that if we use a HTTP proxy, we check connections to that
2943 * proxy and not to the actual remote server.
2948 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2950 if(!pipeLen && !check->inuse) {
2951 /* The check for a dead socket makes sense only if there are no
2952 handles in pipeline and the connection isn't already marked in
2955 if(check->handler->protocol & CURLPROTO_RTSP)
2956 /* RTSP is a special case due to RTP interleaving */
2957 dead = Curl_rtsp_connisdead(check);
2959 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2963 infof(data, "Connection %ld seems to be dead!\n",
2964 check->connection_id);
2966 /* disconnect resources */
2967 Curl_disconnect(check, /* dead_connection */ TRUE);
2973 /* Make sure the pipe has only GET requests */
2974 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2975 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2977 if(!IsPipeliningPossible(sh, check))
2981 if(!IsPipeliningPossible(rh, check))
2987 /* can only happen within multi handles, and means that another easy
2988 handle is using this connection */
2992 if(Curl_resolver_asynch()) {
2993 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2994 completed yet and until then we don't re-use this connection */
2995 if(!check->ip_addr_str[0]) {
2997 "Connection #%ld is still name resolving, can't reuse\n",
2998 check->connection_id);
3003 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
3004 check->bits.close) {
3005 /* Don't pick a connection that hasn't connected yet or that is going
3007 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
3008 check->connection_id);
3010 if(check->recv_pipe->size > 0) {
3012 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3013 check->connection_id);
3020 if((needle->handler->flags&PROTOPT_SSL) !=
3021 (check->handler->flags&PROTOPT_SSL))
3022 /* don't do mixed SSL and non-SSL connections */
3023 if(!(needle->handler->protocol & check->handler->protocol))
3024 /* except protocols that have been upgraded via TLS */
3027 if(needle->handler->flags&PROTOPT_SSL) {
3028 if((data->set.ssl.verifypeer != check->verifypeer) ||
3029 (data->set.ssl.verifyhost != check->verifyhost))
3033 if(needle->bits.proxy != check->bits.proxy)
3034 /* don't do mixed proxy and non-proxy connections */
3037 if(!canPipeline && check->inuse)
3038 /* this request can't be pipelined but the checked connection is
3039 already in use so we skip it */
3042 if(needle->localdev || needle->localport) {
3043 /* If we are bound to a specific local end (IP+port), we must not
3044 re-use a random other one, although if we didn't ask for a
3045 particular one we can reuse one that was bound.
3047 This comparison is a bit rough and too strict. Since the input
3048 parameters can be specified in numerous ways and still end up the
3049 same it would take a lot of processing to make it really accurate.
3050 Instead, this matching will assume that re-uses of bound connections
3051 will most likely also re-use the exact same binding parameters and
3052 missing out a few edge cases shouldn't hurt anyone very much.
3054 if((check->localport != needle->localport) ||
3055 (check->localportrange != needle->localportrange) ||
3057 !needle->localdev ||
3058 strcmp(check->localdev, needle->localdev))
3062 if((needle->handler->protocol & CURLPROTO_FTP) ||
3063 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3064 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3065 and password as well */
3066 if(!strequal(needle->user, check->user) ||
3067 !strequal(needle->passwd, check->passwd)) {
3068 /* one of them was different */
3071 credentialsMatch = TRUE;
3074 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3075 (needle->bits.httpproxy && check->bits.httpproxy &&
3076 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3077 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3078 (needle->port == check->port))) {
3079 /* The requested connection does not use a HTTP proxy or it uses SSL or
3080 it is a non-SSL protocol tunneled over the same http proxy name and
3081 port number or it is a non-SSL protocol which is allowed to be
3084 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3085 needle->handler->protocol & check->handler->protocol) &&
3086 Curl_raw_equal(needle->host.name, check->host.name) &&
3087 needle->remote_port == check->remote_port) {
3088 if(needle->handler->flags & PROTOPT_SSL) {
3089 /* This is a SSL connection so verify that we're using the same
3090 SSL options as well */
3091 if(!Curl_ssl_config_matches(&needle->ssl_config,
3092 &check->ssl_config)) {
3094 "Connection #%ld has different SSL parameters, "
3096 check->connection_id));
3099 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3101 "Connection #%ld has not started SSL connect, "
3103 check->connection_id));
3110 else { /* The requested needle connection is using a proxy,
3111 is the checked one using the same host, port and type? */
3112 if(check->bits.proxy &&
3113 (needle->proxytype == check->proxytype) &&
3114 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3115 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3116 needle->port == check->port) {
3117 /* This is the same proxy connection, use it! */
3123 /* If we are looking for an NTLM connection, check if this is already
3124 authenticating with the right credentials. If not, keep looking so
3125 that we can reuse NTLM connections if possible. (Especially we
3126 must not reuse the same connection if partway through
3129 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3132 /* We must use this connection, no other */
3133 *force_reuse = TRUE;
3141 /* We can pipeline if we want to. Let's continue looking for
3142 the optimal connection to use, i.e the shortest pipe that is not
3146 /* We have the optimal connection. Let's stop looking. */
3151 /* We can't use the connection if the pipe is full */
3152 if(pipeLen >= max_pipe_len)
3155 /* We can't use the connection if the pipe is penalized */
3156 if(Curl_pipeline_penalized(data, check))
3159 if(pipeLen < best_pipe_len) {
3160 /* This connection has a shorter pipe so far. We'll pick this
3161 and continue searching */
3163 best_pipe_len = pipeLen;
3168 /* We have found a connection. Let's stop searching. */
3178 return TRUE; /* yes, we found one to use! */
3181 return FALSE; /* no matching connecting exists */
3184 /* Mark the connection as 'idle', or close it if the cache is full.
3185 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3187 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3189 /* data->multi->maxconnects can be negative, deal with it. */
3190 size_t maxconnects =
3191 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3192 struct connectdata *conn_candidate = NULL;
3194 /* Mark the current connection as 'unused' */
3195 conn->inuse = FALSE;
3197 if(maxconnects > 0 &&
3198 data->state.conn_cache->num_connections > maxconnects) {
3199 infof(data, "Connection cache is full, closing the oldest one.\n");
3201 conn_candidate = find_oldest_idle_connection(data);
3203 if(conn_candidate) {
3204 /* Set the connection's owner correctly */
3205 conn_candidate->data = data;
3207 /* the winner gets the honour of being disconnected */
3208 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3212 return (conn_candidate == conn) ? FALSE : TRUE;
3216 * The given input connection struct pointer is to be stored in the connection
3217 * cache. If the cache is already full, least interesting existing connection
3218 * (if any) gets closed.
3220 * The given connection should be unique. That must've been checked prior to
3223 static CURLcode ConnectionStore(struct SessionHandle *data,
3224 struct connectdata *conn)
3226 static int connection_id_counter = 0;
3230 /* Assign a number to the connection for easier tracking in the log
3232 conn->connection_id = connection_id_counter++;
3234 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3235 if(result != CURLE_OK)
3236 conn->connection_id = -1;
3241 /* after a TCP connection to the proxy has been verified, this function does
3242 the next magic step.
3244 Note: this function's sub-functions call failf()
3247 CURLcode Curl_connected_proxy(struct connectdata *conn,
3250 if(!conn->bits.proxy || sockindex)
3251 /* this magic only works for the primary socket as the secondary is used
3252 for FTP only and it has FTP specific magic in ftp.c */
3255 switch(conn->proxytype) {
3256 #ifndef CURL_DISABLE_PROXY
3257 case CURLPROXY_SOCKS5:
3258 case CURLPROXY_SOCKS5_HOSTNAME:
3259 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3260 conn->host.name, conn->remote_port,
3263 case CURLPROXY_SOCKS4:
3264 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3265 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3267 case CURLPROXY_SOCKS4A:
3268 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3269 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3271 #endif /* CURL_DISABLE_PROXY */
3272 case CURLPROXY_HTTP:
3273 case CURLPROXY_HTTP_1_0:
3274 /* do nothing here. handled later. */
3278 } /* switch proxytype */
3284 * verboseconnect() displays verbose information after a connect
3286 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3287 void Curl_verboseconnect(struct connectdata *conn)
3289 if(conn->data->set.verbose)
3290 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3291 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3292 conn->ip_addr_str, conn->port, conn->connection_id);
3296 int Curl_protocol_getsock(struct connectdata *conn,
3297 curl_socket_t *socks,
3300 if(conn->handler->proto_getsock)
3301 return conn->handler->proto_getsock(conn, socks, numsocks);
3302 return GETSOCK_BLANK;
3305 int Curl_doing_getsock(struct connectdata *conn,
3306 curl_socket_t *socks,
3309 if(conn && conn->handler->doing_getsock)
3310 return conn->handler->doing_getsock(conn, socks, numsocks);
3311 return GETSOCK_BLANK;
3315 * We are doing protocol-specific connecting and this is being called over and
3316 * over from the multi interface until the connection phase is done on
3320 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3323 CURLcode result=CURLE_OK;
3325 if(conn && conn->handler->connecting) {
3327 result = conn->handler->connecting(conn, done);
3336 * We are DOING this is being called over and over from the multi interface
3337 * until the DOING phase is done on protocol layer.
3340 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3342 CURLcode result=CURLE_OK;
3344 if(conn && conn->handler->doing) {
3346 result = conn->handler->doing(conn, done);
3355 * We have discovered that the TCP connection has been successful, we can now
3356 * proceed with some action.
3359 CURLcode Curl_protocol_connect(struct connectdata *conn,
3360 bool *protocol_done)
3362 CURLcode result=CURLE_OK;
3364 *protocol_done = FALSE;
3366 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3367 /* We already are connected, get back. This may happen when the connect
3368 worked fine in the first call, like when we connect to a local server
3369 or proxy. Note that we don't know if the protocol is actually done.
3371 Unless this protocol doesn't have any protocol-connect callback, as
3372 then we know we're done. */
3373 if(!conn->handler->connecting)
3374 *protocol_done = TRUE;
3379 if(!conn->bits.protoconnstart) {
3381 result = Curl_proxy_connect(conn);
3385 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3386 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3387 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3388 before proceeding further. Return CURLE_OK so we'll be called again */
3391 if(conn->handler->connect_it) {
3392 /* is there a protocol-specific connect() procedure? */
3394 /* Call the protocol-specific connect function */
3395 result = conn->handler->connect_it(conn, protocol_done);
3398 *protocol_done = TRUE;
3400 /* it has started, possibly even completed but that knowledge isn't stored
3403 conn->bits.protoconnstart = TRUE;
3406 return result; /* pass back status */
3410 * Helpers for IDNA convertions.
3412 static bool is_ASCII_name(const char *hostname)
3414 const unsigned char *ch = (const unsigned char*)hostname;
3425 * Check if characters in hostname is allowed in Top Level Domain.
3427 static bool tld_check_name(struct SessionHandle *data,
3428 const char *ace_hostname)
3431 char *uc_name = NULL;
3433 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3434 const char *tld_errmsg = "<no msg>";
3439 /* Convert (and downcase) ACE-name back into locale's character set */
3440 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3441 if(rc != IDNA_SUCCESS)
3444 rc = tld_check_lz(uc_name, &err_pos, NULL);
3445 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3446 #ifdef HAVE_TLD_STRERROR
3447 if(rc != TLD_SUCCESS)
3448 tld_errmsg = tld_strerror((Tld_rc)rc);
3450 if(rc == TLD_INVALID)
3451 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3452 tld_errmsg, err_pos, uc_name[err_pos],
3453 uc_name[err_pos] & 255);
3454 else if(rc != TLD_SUCCESS)
3455 infof(data, "WARNING: TLD check for %s failed; %s\n",
3456 uc_name, tld_errmsg);
3457 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3460 if(rc != TLD_SUCCESS)
3468 * Perform any necessary IDN conversion of hostname
3470 static void fix_hostname(struct SessionHandle *data,
3471 struct connectdata *conn, struct hostname *host)
3476 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3480 /* set the name we use to display the host name */
3481 host->dispname = host->name;
3482 if(!is_ASCII_name(host->name)) {
3484 /*************************************************************
3485 * Check name for non-ASCII and convert hostname to ACE form.
3486 *************************************************************/
3487 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3488 char *ace_hostname = NULL;
3489 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3490 infof (data, "Input domain encoded as `%s'\n",
3491 stringprep_locale_charset ());
3492 if(rc != IDNA_SUCCESS)
3493 infof(data, "Failed to convert %s to ACE; %s\n",
3494 host->name, Curl_idn_strerror(conn,rc));
3496 /* tld_check_name() displays a warning if the host name contains
3497 "illegal" characters for this TLD */
3498 (void)tld_check_name(data, ace_hostname);
3500 host->encalloc = ace_hostname;
3501 /* change the name pointer to point to the encoded hostname */
3502 host->name = host->encalloc;
3505 #elif defined(USE_WIN32_IDN)
3506 /*************************************************************
3507 * Check name for non-ASCII and convert hostname to ACE form.
3508 *************************************************************/
3509 char *ace_hostname = NULL;
3510 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3512 infof(data, "Failed to convert %s to ACE;\n",
3515 host->encalloc = ace_hostname;
3516 /* change the name pointer to point to the encoded hostname */
3517 host->name = host->encalloc;
3520 infof(data, "IDN support not present, can't parse Unicode domains\n");
3525 static void llist_dtor(void *user, void *element)
3533 * Allocate and initialize a new connectdata object.
3535 static struct connectdata *allocate_conn(struct SessionHandle *data)
3537 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3541 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3542 already from start to avoid NULL
3543 situations and checks */
3545 /* and we setup a few fields in case we end up actually using this struct */
3547 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3548 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3549 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3550 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3551 conn->connection_id = -1; /* no ID */
3552 conn->port = -1; /* unknown at this point */
3554 /* Default protocol-independent behavior doesn't support persistent
3555 connections, so we set this to force-close. Protocols that support
3556 this need to set this to FALSE in their "curl_do" functions. */
3557 conn->bits.close = TRUE;
3559 /* Store creation time to help future close decision making */
3560 conn->created = Curl_tvnow();
3562 conn->data = data; /* Setup the association between this connection
3563 and the SessionHandle */
3565 conn->proxytype = data->set.proxytype; /* type */
3567 #ifdef CURL_DISABLE_PROXY
3569 conn->bits.proxy = FALSE;
3570 conn->bits.httpproxy = FALSE;
3571 conn->bits.proxy_user_passwd = FALSE;
3572 conn->bits.tunnel_proxy = FALSE;
3574 #else /* CURL_DISABLE_PROXY */
3576 /* note that these two proxy bits are now just on what looks to be
3577 requested, they may be altered down the road */
3578 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3579 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3580 conn->bits.httpproxy = (conn->bits.proxy &&
3581 (conn->proxytype == CURLPROXY_HTTP ||
3582 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3583 conn->bits.proxy_user_passwd =
3584 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3585 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3587 #endif /* CURL_DISABLE_PROXY */
3589 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3590 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3591 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3593 conn->verifypeer = data->set.ssl.verifypeer;
3594 conn->verifyhost = data->set.ssl.verifyhost;
3596 conn->ip_version = data->set.ipver;
3598 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3599 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3600 conn->ntlm_auth_hlpr_pid = 0;
3601 conn->challenge_header = NULL;
3602 conn->response_header = NULL;
3605 if(Curl_multi_pipeline_enabled(data->multi) &&
3606 !conn->master_buffer) {
3607 /* Allocate master_buffer to be used for pipelining */
3608 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3609 if(!conn->master_buffer)
3613 /* Initialize the pipeline lists */
3614 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3615 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3616 if(!conn->send_pipe || !conn->recv_pipe)
3620 conn->data_prot = PROT_CLEAR;
3623 /* Store the local bind parameters that will be used for this connection */
3624 if(data->set.str[STRING_DEVICE]) {
3625 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3629 conn->localportrange = data->set.localportrange;
3630 conn->localport = data->set.localport;
3632 /* the close socket stuff needs to be copied to the connection struct as
3633 it may live on without (this specific) SessionHandle */
3634 conn->fclosesocket = data->set.fclosesocket;
3635 conn->closesocket_client = data->set.closesocket_client;
3640 Curl_llist_destroy(conn->send_pipe, NULL);
3641 Curl_llist_destroy(conn->recv_pipe, NULL);
3643 conn->send_pipe = NULL;
3644 conn->recv_pipe = NULL;
3646 Curl_safefree(conn->master_buffer);
3647 Curl_safefree(conn->localdev);
3648 Curl_safefree(conn);
3652 static CURLcode findprotocol(struct SessionHandle *data,
3653 struct connectdata *conn,
3654 const char *protostr)
3656 const struct Curl_handler * const *pp;
3657 const struct Curl_handler *p;
3659 /* Scan protocol handler table and match against 'protostr' to set a few
3660 variables based on the URL. Now that the handler may be changed later
3661 when the protocol specific setup function is called. */
3662 for(pp = protocols; (p = *pp) != NULL; pp++) {
3663 if(Curl_raw_equal(p->scheme, protostr)) {
3664 /* Protocol found in table. Check if allowed */
3665 if(!(data->set.allowed_protocols & p->protocol))
3669 /* it is allowed for "normal" request, now do an extra check if this is
3670 the result of a redirect */
3671 if(data->state.this_is_a_follow &&
3672 !(data->set.redir_protocols & p->protocol))
3676 /* Perform setup complement if some. */
3677 conn->handler = conn->given = p;
3679 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3685 /* The protocol was not found in the table, but we don't have to assign it
3686 to anything since it is already assigned to a dummy-struct in the
3687 create_conn() function when the connectdata struct is allocated. */
3688 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3691 return CURLE_UNSUPPORTED_PROTOCOL;
3695 * Parse URL and fill in the relevant members of the connection struct.
3697 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3698 struct connectdata *conn,
3700 char **userp, char **passwdp,
3705 char *path = data->state.path;
3711 bool rebuild_url = FALSE;
3713 *prot_missing = FALSE;
3715 /*************************************************************
3718 * We need to parse the url even when using the proxy, because we will need
3719 * the hostname and port in case we are trying to SSL connect through the
3720 * proxy -- and we don't know if we will need to use SSL until we parse the
3722 ************************************************************/
3723 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3725 Curl_raw_equal(protobuf, "file")) {
3726 if(path[0] == '/' && path[1] == '/') {
3727 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3728 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3729 * file://localhost/<path> is similar to how other schemes treat missing
3730 * hostnames. See RFC 1808. */
3732 /* This cannot be done with strcpy() in a portable manner, since the
3733 memory areas overlap! */
3734 memmove(path, path + 2, strlen(path + 2)+1);
3737 * we deal with file://<host>/<path> differently since it supports no
3738 * hostname other than "localhost" and "127.0.0.1", which is unique among
3739 * the URL protocols specified in RFC 1738
3741 if(path[0] != '/') {
3742 /* the URL included a host name, we ignore host names in file:// URLs
3743 as the standards don't define what to do with them */
3744 char *ptr=strchr(path, '/');
3746 /* there was a slash present
3748 RFC1738 (section 3.1, page 5) says:
3750 The rest of the locator consists of data specific to the scheme,
3751 and is known as the "url-path". It supplies the details of how the
3752 specified resource can be accessed. Note that the "/" between the
3753 host (or port) and the url-path is NOT part of the url-path.
3755 As most agents use file://localhost/foo to get '/foo' although the
3756 slash preceding foo is a separator and not a slash for the path,
3757 a URL as file://localhost//foo must be valid as well, to refer to
3758 the same file with an absolute path.
3761 if(ptr[1] && ('/' == ptr[1]))
3762 /* if there was two slashes, we skip the first one as that is then
3763 used truly as a separator */
3766 /* This cannot be made with strcpy, as the memory chunks overlap! */
3767 memmove(path, ptr, strlen(ptr)+1);
3771 protop = "file"; /* protocol string */
3777 if(2 > sscanf(data->change.url,
3778 "%15[^\n:]://%[^\n/?]%[^\n]",
3780 conn->host.name, path)) {
3783 * The URL was badly formatted, let's try the browser-style _without_
3784 * protocol specified like 'http://'.
3786 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3789 * We couldn't even get this format.
3790 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3791 * assigned, but the return value is EOF!
3793 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3794 if(!(rc == -1 && *conn->host.name))
3797 failf(data, "<url> malformed");
3798 return CURLE_URL_MALFORMAT;
3803 * Since there was no protocol part specified, we guess what protocol it
3804 * is based on the first letters of the server name.
3807 /* Note: if you add a new protocol, please update the list in
3808 * lib/version.c too! */
3810 if(checkprefix("FTP.", conn->host.name))
3812 else if(checkprefix("DICT.", conn->host.name))
3814 else if(checkprefix("LDAP.", conn->host.name))
3816 else if(checkprefix("IMAP.", conn->host.name))
3818 else if(checkprefix("SMTP.", conn->host.name))
3820 else if(checkprefix("POP3.", conn->host.name))
3826 *prot_missing = TRUE; /* not given in URL */
3832 /* We search for '?' in the host name (but only on the right side of a
3833 * @-letter to allow ?-letters in username and password) to handle things
3834 * like http://example.com?param= (notice the missing '/').
3836 at = strchr(conn->host.name, '@');
3838 query = strchr(at+1, '?');
3840 query = strchr(conn->host.name, '?');
3843 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3844 a slash after the '?', that is where the path currently begins and the
3845 '?string' is still part of the host name.
3847 We must move the trailing part from the host name and put it first in
3848 the path. And have it all prefixed with a slash.
3851 size_t hostlen = strlen(query);
3852 size_t pathlen = strlen(path);
3854 /* move the existing path plus the zero byte forward, to make room for
3855 the host-name part */
3856 memmove(path+hostlen+1, path, pathlen+1);
3858 /* now copy the trailing host part in front of the existing path */
3859 memcpy(path+1, query, hostlen);
3861 path[0]='/'; /* prepend the missing slash */
3864 *query=0; /* now cut off the hostname at the ? */
3867 /* if there's no path set, use a single slash */
3872 /* If the URL is malformatted (missing a '/' after hostname before path) we
3873 * insert a slash here. The only letter except '/' we accept to start a path
3876 if(path[0] == '?') {
3877 /* We need this function to deal with overlapping memory areas. We know
3878 that the memory area 'path' points to is 'urllen' bytes big and that
3879 is bigger than the path. Use +1 to move the zero byte too. */
3880 memmove(&path[1], path, strlen(path)+1);
3885 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3886 char *newp = Curl_dedotdotify(path);
3888 return CURLE_OUT_OF_MEMORY;
3890 if(strcmp(newp, path)) {
3892 free(data->state.pathbuffer);
3893 data->state.pathbuffer = newp;
3894 data->state.path = newp;
3902 * "rebuild_url" means that one or more URL components have been modified so
3903 * we need to generate an updated full version. We need the corrected URL
3904 * when communicating over HTTP proxy and we don't know at this point if
3905 * we're using a proxy or not.
3910 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3912 size_t urllen = strlen(data->change.url); /* original URL length */
3914 size_t prefixlen = strlen(conn->host.name);
3917 prefixlen += strlen(protop) + strlen("://");
3919 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3921 return CURLE_OUT_OF_MEMORY;
3923 /* copy the prefix */
3924 memcpy(reurl, data->change.url, prefixlen);
3926 /* append the trailing piece + zerobyte */
3927 memcpy(&reurl[prefixlen], path, plen + 1);
3929 /* possible free the old one */
3930 if(data->change.url_alloc) {
3931 Curl_safefree(data->change.url);
3932 data->change.url_alloc = FALSE;
3935 infof(data, "Rebuilt URL to: %s\n", reurl);
3937 data->change.url = reurl;
3938 data->change.url_alloc = TRUE; /* free this later */
3942 * Parse the login details from the URL and strip them out of
3945 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3946 if(result != CURLE_OK)
3949 if(conn->host.name[0] == '[') {
3950 /* This looks like an IPv6 address literal. See if there is an address
3952 char *percent = strstr (conn->host.name, "%25");
3955 unsigned long scope = strtoul (percent + 3, &endp, 10);
3957 /* The address scope was well formed. Knock it out of the
3959 memmove(percent, endp, strlen(endp)+1);
3960 if(!data->state.this_is_a_follow)
3961 /* Don't honour a scope given in a Location: header */
3962 conn->scope = (unsigned int)scope;
3965 infof(data, "Invalid IPv6 address format\n");
3970 /* Override any scope that was set above. */
3971 conn->scope = data->set.scope;
3973 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3974 last part of the URI. We are looking for the first '#' so that we deal
3975 gracefully with non conformant URI such as http://example.com#foo#bar. */
3976 fragment = strchr(path, '#');
3980 /* we know the path part ended with a fragment, so we know the full URL
3981 string does too and we need to cut it off from there so it isn't used
3983 fragment = strchr(data->change.url, '#');
3989 * So if the URL was A://B/C#D,
3991 * conn->host.name is B
3992 * data->state.path is /C
3995 return findprotocol(data, conn, protop);
3999 * If we're doing a resumed transfer, we need to setup our stuff
4002 static CURLcode setup_range(struct SessionHandle *data)
4004 struct UrlState *s = &data->state;
4005 s->resume_from = data->set.set_resume_from;
4006 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4007 if(s->rangestringalloc)
4011 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4013 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4015 s->rangestringalloc = (s->range)?TRUE:FALSE;
4018 return CURLE_OUT_OF_MEMORY;
4020 /* tell ourselves to fetch this range */
4021 s->use_range = TRUE; /* enable range download */
4024 s->use_range = FALSE; /* disable range download */
4031 * setup_connection_internals() -
4033 * Setup connection internals specific to the requested protocol in the
4034 * SessionHandle. This is inited and setup before the connection is made but
4035 * is about the particular protocol that is to be used.
4037 * This MUST get called after proxy magic has been figured out.
4039 static CURLcode setup_connection_internals(struct connectdata *conn)
4041 const struct Curl_handler * p;
4044 /* in some case in the multi state-machine, we go back to the CONNECT state
4045 and then a second (or third or...) call to this function will be made
4046 without doing a DISCONNECT or DONE in between (since the connection is
4047 yet in place) and therefore this function needs to first make sure
4048 there's no lingering previous data allocated. */
4049 Curl_free_request_state(conn->data);
4051 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4052 conn->data->req.maxdownload = -1;
4054 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4056 /* Perform setup complement if some. */
4059 if(p->setup_connection) {
4060 result = (*p->setup_connection)(conn);
4062 if(result != CURLE_OK)
4065 p = conn->handler; /* May have changed. */
4069 /* we check for -1 here since if proxy was detected already, this
4070 was very likely already set to the proxy port */
4071 conn->port = p->defport;
4073 /* only if remote_port was not already parsed off the URL we use the
4074 default port number */
4075 if(!conn->remote_port)
4076 conn->remote_port = (unsigned short)conn->given->defport;
4082 * Curl_free_request_state() should free temp data that was allocated in the
4083 * SessionHandle for this single request.
4086 void Curl_free_request_state(struct SessionHandle *data)
4088 Curl_safefree(data->req.protop);
4092 #ifndef CURL_DISABLE_PROXY
4093 /****************************************************************
4094 * Checks if the host is in the noproxy list. returns true if it matches
4095 * and therefore the proxy should NOT be used.
4096 ****************************************************************/
4097 static bool check_noproxy(const char* name, const char* no_proxy)
4099 /* no_proxy=domain1.dom,host.domain2.dom
4100 * (a comma-separated list of hosts which should
4101 * not be proxied, or an asterisk to override
4102 * all proxy variables)
4106 const char* separator = ", ";
4107 size_t no_proxy_len;
4111 if(no_proxy && no_proxy[0]) {
4112 if(Curl_raw_equal("*", no_proxy)) {
4116 /* NO_PROXY was specified and it wasn't just an asterisk */
4118 no_proxy_len = strlen(no_proxy);
4119 endptr = strchr(name, ':');
4121 namelen = endptr - name;
4123 namelen = strlen(name);
4125 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4126 while(tok_start < no_proxy_len &&
4127 strchr(separator, no_proxy[tok_start]) != NULL) {
4128 /* Look for the beginning of the token. */
4132 if(tok_start == no_proxy_len)
4133 break; /* It was all trailing separator chars, no more tokens. */
4135 for(tok_end = tok_start; tok_end < no_proxy_len &&
4136 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4137 /* Look for the end of the token. */
4140 /* To match previous behaviour, where it was necessary to specify
4141 * ".local.com" to prevent matching "notlocal.com", we will leave
4144 if(no_proxy[tok_start] == '.')
4147 if((tok_end - tok_start) <= namelen) {
4148 /* Match the last part of the name to the domain we are checking. */
4149 const char *checkn = name + namelen - (tok_end - tok_start);
4150 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4151 tok_end - tok_start)) {
4152 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4153 /* We either have an exact match, or the previous character is a .
4154 * so it is within the same domain, so no proxy for this host.
4159 } /* if((tok_end - tok_start) <= namelen) */
4160 } /* for(tok_start = 0; tok_start < no_proxy_len;
4161 tok_start = tok_end + 1) */
4162 } /* NO_PROXY was specified and it wasn't just an asterisk */
4167 /****************************************************************
4168 * Detect what (if any) proxy to use. Remember that this selects a host
4169 * name and is not limited to HTTP proxies only.
4170 * The returned pointer must be freed by the caller (unless NULL)
4171 ****************************************************************/
4172 static char *detect_proxy(struct connectdata *conn)
4176 #ifndef CURL_DISABLE_HTTP
4177 /* If proxy was not specified, we check for default proxy environment
4178 * variables, to enable i.e Lynx compliance:
4180 * http_proxy=http://some.server.dom:port/
4181 * https_proxy=http://some.server.dom:port/
4182 * ftp_proxy=http://some.server.dom:port/
4183 * no_proxy=domain1.dom,host.domain2.dom
4184 * (a comma-separated list of hosts which should
4185 * not be proxied, or an asterisk to override
4186 * all proxy variables)
4187 * all_proxy=http://some.server.dom:port/
4188 * (seems to exist for the CERN www lib. Probably
4189 * the first to check for.)
4191 * For compatibility, the all-uppercase versions of these variables are
4192 * checked if the lowercase versions don't exist.
4194 char *no_proxy=NULL;
4195 char proxy_env[128];
4197 no_proxy=curl_getenv("no_proxy");
4199 no_proxy=curl_getenv("NO_PROXY");
4201 if(!check_noproxy(conn->host.name, no_proxy)) {
4202 /* It was not listed as without proxy */
4203 const char *protop = conn->handler->scheme;
4204 char *envp = proxy_env;
4207 /* Now, build <protocol>_proxy and check for such a one to use */
4209 *envp++ = (char)tolower((int)*protop++);
4212 strcpy(envp, "_proxy");
4214 /* read the protocol proxy: */
4215 prox=curl_getenv(proxy_env);
4218 * We don't try the uppercase version of HTTP_PROXY because of
4221 * When curl is used in a webserver application
4222 * environment (cgi or php), this environment variable can
4223 * be controlled by the web server user by setting the
4224 * http header 'Proxy:' to some value.
4226 * This can cause 'internal' http/ftp requests to be
4227 * arbitrarily redirected by any external attacker.
4229 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4230 /* There was no lowercase variable, try the uppercase version: */
4231 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4232 prox=curl_getenv(proxy_env);
4235 if(prox && *prox) { /* don't count "" strings */
4236 proxy = prox; /* use this */
4239 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4241 proxy=curl_getenv("ALL_PROXY");
4243 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4248 #else /* !CURL_DISABLE_HTTP */
4251 #endif /* CURL_DISABLE_HTTP */
4257 * If this is supposed to use a proxy, we need to figure out the proxy
4258 * host name, so that we can re-use an existing connection
4259 * that may exist registered to the same proxy host.
4260 * proxy will be freed before this function returns.
4262 static CURLcode parse_proxy(struct SessionHandle *data,
4263 struct connectdata *conn, char *proxy)
4268 /* We use 'proxyptr' to point to the proxy name from now on... */
4273 /* We do the proxy host string parsing here. We want the host name and the
4274 * port name. Accept a protocol:// prefix
4277 /* Parse the protocol part if present */
4278 endofprot = strstr(proxy, "://");
4280 proxyptr = endofprot+3;
4281 if(checkprefix("socks5h", proxy))
4282 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4283 else if(checkprefix("socks5", proxy))
4284 conn->proxytype = CURLPROXY_SOCKS5;
4285 else if(checkprefix("socks4a", proxy))
4286 conn->proxytype = CURLPROXY_SOCKS4A;
4287 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4288 conn->proxytype = CURLPROXY_SOCKS4;
4289 /* Any other xxx:// : change to http proxy */
4292 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4294 /* Is there a username and password given in this proxy url? */
4295 atsign = strchr(proxyptr, '@');
4297 CURLcode res = CURLE_OK;
4298 char *proxyuser = NULL;
4299 char *proxypasswd = NULL;
4301 res = parse_login_details(proxyptr, atsign - proxyptr,
4302 &proxyuser, &proxypasswd, NULL);
4304 /* found user and password, rip them out. note that we are
4305 unescaping them, as there is otherwise no way to have a
4306 username or password with reserved characters like ':' in
4308 Curl_safefree(conn->proxyuser);
4309 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4310 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4312 conn->proxyuser = strdup("");
4314 if(!conn->proxyuser)
4315 res = CURLE_OUT_OF_MEMORY;
4317 Curl_safefree(conn->proxypasswd);
4318 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4319 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4321 conn->proxypasswd = strdup("");
4323 if(!conn->proxypasswd)
4324 res = CURLE_OUT_OF_MEMORY;
4328 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4329 atsign++; /* the right side of the @-letter */
4332 proxyptr = atsign; /* now use this instead */
4334 res = CURLE_OUT_OF_MEMORY;
4338 Curl_safefree(proxyuser);
4339 Curl_safefree(proxypasswd);
4345 /* start scanning for port number at this point */
4348 /* detect and extract RFC2732-style IPv6-addresses */
4349 if(*proxyptr == '[') {
4350 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4351 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4355 /* yeps, it ended nicely with a bracket as well */
4358 infof(data, "Invalid IPv6 address format\n");
4360 /* Note that if this didn't end with a bracket, we still advanced the
4361 * proxyptr first, but I can't see anything wrong with that as no host
4362 * name nor a numeric can legally start with a bracket.
4366 /* Get port number off proxy.server.com:1080 */
4367 prox_portno = strchr(portptr, ':');
4369 *prox_portno = 0x0; /* cut off number from host name */
4371 /* now set the local port number */
4372 conn->port = strtol(prox_portno, NULL, 10);
4375 if(proxyptr[0]=='/')
4376 /* If the first character in the proxy string is a slash, fail
4377 immediately. The following code will otherwise clear the string which
4378 will lead to code running as if no proxy was set! */
4379 return CURLE_COULDNT_RESOLVE_PROXY;
4381 /* without a port number after the host name, some people seem to use
4382 a slash so we strip everything from the first slash */
4383 atsign = strchr(proxyptr, '/');
4385 *atsign = 0x0; /* cut off path part from host name */
4387 if(data->set.proxyport)
4388 /* None given in the proxy string, then get the default one if it is
4390 conn->port = data->set.proxyport;
4393 /* now, clone the cleaned proxy host name */
4394 conn->proxy.rawalloc = strdup(proxyptr);
4395 conn->proxy.name = conn->proxy.rawalloc;
4397 if(!conn->proxy.rawalloc)
4398 return CURLE_OUT_OF_MEMORY;
4404 * Extract the user and password from the authentication string
4406 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4407 struct connectdata *conn)
4409 char proxyuser[MAX_CURL_USER_LENGTH]="";
4410 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4412 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4413 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4414 MAX_CURL_USER_LENGTH);
4415 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4417 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4418 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4419 MAX_CURL_PASSWORD_LENGTH);
4420 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4423 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4424 if(!conn->proxyuser)
4425 return CURLE_OUT_OF_MEMORY;
4427 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4428 if(!conn->proxypasswd)
4429 return CURLE_OUT_OF_MEMORY;
4433 #endif /* CURL_DISABLE_PROXY */
4438 * Parse the login details (user name, password and options) from the URL and
4439 * strip them out of the host name
4441 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4444 * Outputs: (almost :- all currently undefined)
4445 * conn->bits.user_passwd - non-zero if non-default passwords exist
4446 * user - non-zero length if defined
4447 * passwd - non-zero length if defined
4448 * options - non-zero length if defined
4449 * conn->host.name - remove user name and password
4451 static CURLcode parse_url_login(struct SessionHandle *data,
4452 struct connectdata *conn,
4453 char **user, char **passwd, char **options)
4455 CURLcode result = CURLE_OK;
4457 char *passwdp = NULL;
4458 char *optionsp = NULL;
4460 /* At this point, we're hoping all the other special cases have
4461 * been taken care of, so conn->host.name is at most
4462 * [user[:password][;options]]@]hostname
4464 * We need somewhere to put the embedded details, so do that first.
4467 char *ptr = strchr(conn->host.name, '@');
4468 char *login = conn->host.name;
4470 DEBUGASSERT(!**user);
4471 DEBUGASSERT(!**passwd);
4472 DEBUGASSERT(!**options);
4477 /* We will now try to extract the
4478 * possible login information in a string like:
4479 * ftp://user:password@ftp.my.site:8021/README */
4480 conn->host.name = ++ptr;
4482 /* So the hostname is sane. Only bother interpreting the
4483 * results if we could care. It could still be wasted
4484 * work because it might be overtaken by the programmatically
4485 * set user/passwd, but doing that first adds more cases here :-(
4488 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4491 /* We could use the login information in the URL so extract it */
4492 result = parse_login_details(login, ptr - login - 1,
4493 &userp, &passwdp, &optionsp);
4494 if(result != CURLE_OK)
4500 /* We have a user in the URL */
4501 conn->bits.userpwd_in_url = TRUE;
4502 conn->bits.user_passwd = TRUE; /* enable user+password */
4504 /* Decode the user */
4505 newname = curl_easy_unescape(data, userp, 0, NULL);
4507 result = CURLE_OUT_OF_MEMORY;
4516 /* We have a password in the URL so decode it */
4517 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4519 result = CURLE_OUT_OF_MEMORY;
4524 *passwd = newpasswd;
4528 /* We have an options list in the URL so decode it */
4529 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4531 result = CURLE_OUT_OF_MEMORY;
4536 *options = newoptions;
4542 Curl_safefree(userp);
4543 Curl_safefree(passwdp);
4544 Curl_safefree(optionsp);
4550 * parse_login_details()
4552 * This is used to parse a login string for user name, password and options in
4553 * the following formats:
4557 * user:password;options
4559 * user;options:password
4567 * login [in] - The login string.
4568 * len [in] - The length of the login string.
4569 * userp [in/out] - The address where a pointer to newly allocated memory
4570 * holding the user will be stored upon completion.
4571 * passdwp [in/out] - The address where a pointer to newly allocated memory
4572 * holding the password will be stored upon completion.
4573 * optionsp [in/out] - The address where a pointer to newly allocated memory
4574 * holding the options will be stored upon completion.
4576 * Returns CURLE_OK on success.
4578 static CURLcode parse_login_details(const char *login, const size_t len,
4579 char **userp, char **passwdp,
4582 CURLcode result = CURLE_OK;
4586 const char *psep = NULL;
4587 const char *osep = NULL;
4592 /* Attempt to find the password separator */
4594 psep = strchr(login, ':');
4596 /* Within the constraint of the login string */
4597 if(psep >= login + len)
4601 /* Attempt to find the options separator */
4603 osep = strchr(login, ';');
4605 /* Within the constraint of the login string */
4606 if(osep >= login + len)
4610 /* Calculate the portion lengths */
4612 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4613 (osep ? (size_t)(osep - login) : len));
4615 (osep && osep > psep ? (size_t)(osep - psep) :
4616 (size_t)(login + len - psep)) - 1 : 0);
4618 (psep && psep > osep ? (size_t)(psep - osep) :
4619 (size_t)(login + len - osep)) - 1 : 0);
4621 /* Allocate the user portion buffer */
4623 ubuf = malloc(ulen + 1);
4625 result = CURLE_OUT_OF_MEMORY;
4628 /* Allocate the password portion buffer */
4629 if(!result && passwdp && plen) {
4630 pbuf = malloc(plen + 1);
4632 Curl_safefree(ubuf);
4633 result = CURLE_OUT_OF_MEMORY;
4637 /* Allocate the options portion buffer */
4638 if(!result && optionsp && olen) {
4639 obuf = malloc(olen + 1);
4641 Curl_safefree(pbuf);
4642 Curl_safefree(ubuf);
4643 result = CURLE_OUT_OF_MEMORY;
4648 /* Store the user portion if necessary */
4650 memcpy(ubuf, login, ulen);
4652 Curl_safefree(*userp);
4656 /* Store the password portion if necessary */
4658 memcpy(pbuf, psep + 1, plen);
4660 Curl_safefree(*passwdp);
4664 /* Store the options portion if necessary */
4666 memcpy(obuf, osep + 1, olen);
4668 Curl_safefree(*optionsp);
4676 /*************************************************************
4677 * Figure out the remote port number and fix it in the URL
4679 * No matter if we use a proxy or not, we have to figure out the remote
4680 * port number of various reasons.
4682 * To be able to detect port number flawlessly, we must not confuse them
4683 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4685 * The conn->host.name is currently [user:passwd@]host[:port] where host
4686 * could be a hostname, IPv4 address or IPv6 address.
4688 * The port number embedded in the URL is replaced, if necessary.
4689 *************************************************************/
4690 static CURLcode parse_remote_port(struct SessionHandle *data,
4691 struct connectdata *conn)
4696 /* Note that at this point, the IPv6 address cannot contain any scope
4697 suffix as that has already been removed in the parseurlandfillconn()
4699 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4701 (']' == endbracket)) {
4702 /* this is a RFC2732-style specified IP-address */
4703 conn->bits.ipv6_ip = TRUE;
4705 conn->host.name++; /* skip over the starting bracket */
4706 portptr = strchr(conn->host.name, ']');
4708 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4710 portptr = NULL; /* no port number available */
4715 struct in6_addr in6;
4716 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4717 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4719 failf(data, "IPv6 numerical address used in URL without brackets");
4720 return CURLE_URL_MALFORMAT;
4724 portptr = strrchr(conn->host.name, ':');
4727 if(data->set.use_port && data->state.allow_port) {
4728 /* if set, we use this and ignore the port possibly given in the URL */
4729 conn->remote_port = (unsigned short)data->set.use_port;
4731 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4732 number - since the port number is to be ignored! */
4733 if(conn->bits.httpproxy) {
4734 /* we need to create new URL with the new port number */
4738 if(conn->bits.type_set)
4739 snprintf(type, sizeof(type), ";type=%c",
4740 data->set.prefer_ascii?'A':
4741 (data->set.ftp_list_only?'D':'I'));
4744 * This synthesized URL isn't always right--suffixes like ;type=A are
4745 * stripped off. It would be better to work directly from the original
4746 * URL and simply replace the port part of it.
4748 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4749 conn->bits.ipv6_ip?"[":"", conn->host.name,
4750 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4751 data->state.slash_removed?"/":"", data->state.path,
4754 return CURLE_OUT_OF_MEMORY;
4756 if(data->change.url_alloc) {
4757 Curl_safefree(data->change.url);
4758 data->change.url_alloc = FALSE;
4761 data->change.url = url;
4762 data->change.url_alloc = TRUE;
4766 /* no CURLOPT_PORT given, extract the one from the URL */
4771 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4773 if(rest != (portptr+1) && *rest == '\0') {
4774 /* The colon really did have only digits after it,
4775 * so it is either a port number or a mistake */
4777 if(port > 0xffff) { /* Single unix standard says port numbers are
4779 failf(data, "Port number too large: %lu", port);
4780 return CURLE_URL_MALFORMAT;
4783 *portptr = '\0'; /* cut off the name there */
4784 conn->remote_port = curlx_ultous(port);
4787 /* Browser behavior adaptation. If there's a colon with no digits after,
4788 just cut off the name there which makes us ignore the colon and just
4789 use the default port. Firefox and Chrome both do that. */
4796 * Override the login details from the URL with that in the CURLOPT_USERPWD
4797 * option or a .netrc file, if applicable.
4799 static CURLcode override_login(struct SessionHandle *data,
4800 struct connectdata *conn,
4801 char **userp, char **passwdp, char **optionsp)
4803 if(data->set.str[STRING_USERNAME]) {
4805 *userp = strdup(data->set.str[STRING_USERNAME]);
4807 return CURLE_OUT_OF_MEMORY;
4810 if(data->set.str[STRING_PASSWORD]) {
4812 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4814 return CURLE_OUT_OF_MEMORY;
4817 if(data->set.str[STRING_OPTIONS]) {
4819 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4821 return CURLE_OUT_OF_MEMORY;
4824 conn->bits.netrc = FALSE;
4825 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4826 int ret = Curl_parsenetrc(conn->host.name,
4828 data->set.str[STRING_NETRC_FILE]);
4830 infof(data, "Couldn't find host %s in the "
4831 DOT_CHAR "netrc file; using defaults\n",
4835 return CURLE_OUT_OF_MEMORY;
4838 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4839 file, so that it is safe to use even if we followed a Location: to a
4840 different host or similar. */
4841 conn->bits.netrc = TRUE;
4843 conn->bits.user_passwd = TRUE; /* enable user+password */
4851 * Set the login details so they're available in the connection
4853 static CURLcode set_login(struct connectdata *conn,
4854 const char *user, const char *passwd,
4855 const char *options)
4857 CURLcode result = CURLE_OK;
4859 /* If our protocol needs a password and we have none, use the defaults */
4860 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4861 /* Store the default user */
4862 conn->user = strdup(CURL_DEFAULT_USER);
4864 /* Store the default password */
4866 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4868 conn->passwd = NULL;
4870 /* This is the default password, so DON'T set conn->bits.user_passwd */
4873 /* Store the user, zero-length if not set */
4874 conn->user = strdup(user);
4876 /* Store the password (only if user is present), zero-length if not set */
4878 conn->passwd = strdup(passwd);
4880 conn->passwd = NULL;
4883 if(!conn->user || !conn->passwd)
4884 result = CURLE_OUT_OF_MEMORY;
4886 /* Store the options, null if not set */
4887 if(!result && options[0]) {
4888 conn->options = strdup(options);
4891 result = CURLE_OUT_OF_MEMORY;
4897 /*************************************************************
4898 * Resolve the address of the server or proxy
4899 *************************************************************/
4900 static CURLcode resolve_server(struct SessionHandle *data,
4901 struct connectdata *conn,
4904 CURLcode result=CURLE_OK;
4905 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4907 /*************************************************************
4908 * Resolve the name of the server or proxy
4909 *************************************************************/
4910 if(conn->bits.reuse)
4911 /* We're reusing the connection - no need to resolve anything, and
4912 fix_hostname() was called already in create_conn() for the re-use
4917 /* this is a fresh connect */
4919 struct Curl_dns_entry *hostaddr;
4921 /* set a pointer to the hostname we display */
4922 fix_hostname(data, conn, &conn->host);
4924 if(!conn->proxy.name || !*conn->proxy.name) {
4925 /* If not connecting via a proxy, extract the port from the URL, if it is
4926 * there, thus overriding any defaults that might have been set above. */
4927 conn->port = conn->remote_port; /* it is the same port */
4929 /* Resolve target host right on */
4930 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4931 &hostaddr, timeout_ms);
4932 if(rc == CURLRESOLV_PENDING)
4935 else if(rc == CURLRESOLV_TIMEDOUT)
4936 result = CURLE_OPERATION_TIMEDOUT;
4938 else if(!hostaddr) {
4939 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4940 result = CURLE_COULDNT_RESOLVE_HOST;
4941 /* don't return yet, we need to clean up the timeout first */
4945 /* This is a proxy that hasn't been resolved yet. */
4947 /* IDN-fix the proxy name */
4948 fix_hostname(data, conn, &conn->proxy);
4951 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4952 &hostaddr, timeout_ms);
4954 if(rc == CURLRESOLV_PENDING)
4957 else if(rc == CURLRESOLV_TIMEDOUT)
4958 result = CURLE_OPERATION_TIMEDOUT;
4960 else if(!hostaddr) {
4961 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4962 result = CURLE_COULDNT_RESOLVE_PROXY;
4963 /* don't return yet, we need to clean up the timeout first */
4966 DEBUGASSERT(conn->dns_entry == NULL);
4967 conn->dns_entry = hostaddr;
4974 * Cleanup the connection just allocated before we can move along and use the
4975 * previously existing one. All relevant data is copied over and old_conn is
4976 * ready for freeing once this function returns.
4978 static void reuse_conn(struct connectdata *old_conn,
4979 struct connectdata *conn)
4981 if(old_conn->proxy.rawalloc)
4982 free(old_conn->proxy.rawalloc);
4984 /* free the SSL config struct from this connection struct as this was
4985 allocated in vain and is targeted for destruction */
4986 Curl_free_ssl_config(&old_conn->ssl_config);
4988 conn->data = old_conn->data;
4990 /* get the user+password information from the old_conn struct since it may
4991 * be new for this request even when we re-use an existing connection */
4992 conn->bits.user_passwd = old_conn->bits.user_passwd;
4993 if(conn->bits.user_passwd) {
4994 /* use the new user name and password though */
4995 Curl_safefree(conn->user);
4996 Curl_safefree(conn->passwd);
4997 conn->user = old_conn->user;
4998 conn->passwd = old_conn->passwd;
4999 old_conn->user = NULL;
5000 old_conn->passwd = NULL;
5003 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
5004 if(conn->bits.proxy_user_passwd) {
5005 /* use the new proxy user name and proxy password though */
5006 Curl_safefree(conn->proxyuser);
5007 Curl_safefree(conn->proxypasswd);
5008 conn->proxyuser = old_conn->proxyuser;
5009 conn->proxypasswd = old_conn->proxypasswd;
5010 old_conn->proxyuser = NULL;
5011 old_conn->proxypasswd = NULL;
5014 /* host can change, when doing keepalive with a proxy or if the case is
5015 different this time etc */
5016 Curl_safefree(conn->host.rawalloc);
5017 conn->host=old_conn->host;
5019 /* persist connection info in session handle */
5020 Curl_persistconninfo(conn);
5023 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5025 Curl_safefree(old_conn->user);
5026 Curl_safefree(old_conn->passwd);
5027 Curl_safefree(old_conn->proxyuser);
5028 Curl_safefree(old_conn->proxypasswd);
5029 Curl_safefree(old_conn->localdev);
5031 Curl_llist_destroy(old_conn->send_pipe, NULL);
5032 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5034 old_conn->send_pipe = NULL;
5035 old_conn->recv_pipe = NULL;
5037 Curl_safefree(old_conn->master_buffer);
5041 * create_conn() sets up a new connectdata struct, or re-uses an already
5042 * existing one, and resolves host name.
5044 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5045 * response will be coming asynchronously. If *async is FALSE, the name is
5048 * @param data The sessionhandle pointer
5049 * @param in_connect is set to the next connection data pointer
5050 * @param async is set TRUE when an async DNS resolution is pending
5051 * @see Curl_setup_conn()
5053 * *NOTE* this function assigns the conn->data pointer!
5056 static CURLcode create_conn(struct SessionHandle *data,
5057 struct connectdata **in_connect,
5060 CURLcode result = CURLE_OK;
5061 struct connectdata *conn;
5062 struct connectdata *conn_temp = NULL;
5065 char *passwd = NULL;
5066 char *options = NULL;
5069 bool prot_missing = FALSE;
5070 bool no_connections_available = FALSE;
5072 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5073 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5077 /*************************************************************
5079 *************************************************************/
5081 if(!data->change.url) {
5082 result = CURLE_URL_MALFORMAT;
5086 /* First, split up the current URL in parts so that we can use the
5087 parts for checking against the already present connections. In order
5088 to not have to modify everything at once, we allocate a temporary
5089 connection data struct and fill in for comparison purposes. */
5090 conn = allocate_conn(data);
5093 result = CURLE_OUT_OF_MEMORY;
5097 /* We must set the return variable as soon as possible, so that our
5098 parent can cleanup any possible allocs we may have done before
5102 /* This initing continues below, see the comment "Continue connectdata
5103 * initialization here" */
5105 /***********************************************************
5106 * We need to allocate memory to store the path in. We get the size of the
5107 * full URL to be sure, and we need to make it at least 256 bytes since
5108 * other parts of the code will rely on this fact
5109 ***********************************************************/
5110 #define LEAST_PATH_ALLOC 256
5111 urllen=strlen(data->change.url);
5112 if(urllen < LEAST_PATH_ALLOC)
5113 urllen=LEAST_PATH_ALLOC;
5116 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5117 * 1 - an extra terminating zero
5118 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5121 Curl_safefree(data->state.pathbuffer);
5122 data->state.path = NULL;
5124 data->state.pathbuffer = malloc(urllen+2);
5125 if(NULL == data->state.pathbuffer) {
5126 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5129 data->state.path = data->state.pathbuffer;
5131 conn->host.rawalloc = malloc(urllen+2);
5132 if(NULL == conn->host.rawalloc) {
5133 Curl_safefree(data->state.pathbuffer);
5134 data->state.path = NULL;
5135 result = CURLE_OUT_OF_MEMORY;
5139 conn->host.name = conn->host.rawalloc;
5140 conn->host.name[0] = 0;
5143 passwd = strdup("");
5144 options = strdup("");
5145 if(!user || !passwd || !options) {
5146 result = CURLE_OUT_OF_MEMORY;
5150 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5152 if(result != CURLE_OK)
5155 /*************************************************************
5156 * No protocol part in URL was used, add it!
5157 *************************************************************/
5159 /* We're guessing prefixes here and if we're told to use a proxy or if
5160 we're gonna follow a Location: later or... then we need the protocol
5161 part added so that we have a valid URL. */
5164 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5167 result = CURLE_OUT_OF_MEMORY;
5171 if(data->change.url_alloc) {
5172 Curl_safefree(data->change.url);
5173 data->change.url_alloc = FALSE;
5176 data->change.url = reurl;
5177 data->change.url_alloc = TRUE; /* free this later */
5180 /*************************************************************
5181 * If the protocol can't handle url query strings, then cut
5182 * of the unhandable part
5183 *************************************************************/
5184 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5185 char *path_q_sep = strchr(conn->data->state.path, '?');
5187 /* according to rfc3986, allow the query (?foo=bar)
5188 also on protocols that can't handle it.
5190 cut the string-part after '?'
5193 /* terminate the string */
5198 if(data->set.str[STRING_BEARER]) {
5199 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5200 if(!conn->xoauth2_bearer) {
5201 result = CURLE_OUT_OF_MEMORY;
5206 #ifndef CURL_DISABLE_PROXY
5207 /*************************************************************
5208 * Extract the user and password from the authentication string
5209 *************************************************************/
5210 if(conn->bits.proxy_user_passwd) {
5211 result = parse_proxy_auth(data, conn);
5212 if(result != CURLE_OK)
5216 /*************************************************************
5217 * Detect what (if any) proxy to use
5218 *************************************************************/
5219 if(data->set.str[STRING_PROXY]) {
5220 proxy = strdup(data->set.str[STRING_PROXY]);
5221 /* if global proxy is set, this is it */
5223 failf(data, "memory shortage");
5224 result = CURLE_OUT_OF_MEMORY;
5229 if(data->set.str[STRING_NOPROXY] &&
5230 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5232 free(proxy); /* proxy is in exception list */
5237 proxy = detect_proxy(conn);
5239 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5240 free(proxy); /* Don't bother with an empty proxy string or if the
5241 protocol doesn't work with network */
5245 /***********************************************************************
5246 * If this is supposed to use a proxy, we need to figure out the proxy host
5247 * name, proxy type and port number, so that we can re-use an existing
5248 * connection that may exist registered to the same proxy host.
5249 ***********************************************************************/
5251 result = parse_proxy(data, conn, proxy);
5253 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5258 if((conn->proxytype == CURLPROXY_HTTP) ||
5259 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5260 #ifdef CURL_DISABLE_HTTP
5261 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5262 result = CURLE_UNSUPPORTED_PROTOCOL;
5265 /* force this connection's protocol to become HTTP if not already
5266 compatible - if it isn't tunneling through */
5267 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5268 !conn->bits.tunnel_proxy)
5269 conn->handler = &Curl_handler_http;
5271 conn->bits.httpproxy = TRUE;
5275 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5276 conn->bits.proxy = TRUE;
5279 /* we aren't using the proxy after all... */
5280 conn->bits.proxy = FALSE;
5281 conn->bits.httpproxy = FALSE;
5282 conn->bits.proxy_user_passwd = FALSE;
5283 conn->bits.tunnel_proxy = FALSE;
5286 #endif /* CURL_DISABLE_PROXY */
5288 /*************************************************************
5289 * If the protocol is using SSL and HTTP proxy is used, we set
5290 * the tunnel_proxy bit.
5291 *************************************************************/
5292 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5293 conn->bits.tunnel_proxy = TRUE;
5295 /*************************************************************
5296 * Figure out the remote port number and fix it in the URL
5297 *************************************************************/
5298 result = parse_remote_port(data, conn);
5299 if(result != CURLE_OK)
5302 /* Check for overridden login details and set them accordingly so they
5303 they are known when protocol->setup_connection is called! */
5304 result = override_login(data, conn, &user, &passwd, &options);
5305 if(result != CURLE_OK)
5307 result = set_login(conn, user, passwd, options);
5308 if(result != CURLE_OK)
5311 /*************************************************************
5312 * Setup internals depending on protocol. Needs to be done after
5313 * we figured out what/if proxy to use.
5314 *************************************************************/
5315 result = setup_connection_internals(conn);
5316 if(result != CURLE_OK)
5319 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5320 conn->send[FIRSTSOCKET] = Curl_send_plain;
5321 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5322 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5324 /***********************************************************************
5325 * file: is a special case in that it doesn't need a network connection
5326 ***********************************************************************/
5327 #ifndef CURL_DISABLE_FILE
5328 if(conn->handler->flags & PROTOPT_NONETWORK) {
5330 /* this is supposed to be the connect function so we better at least check
5331 that the file is present here! */
5332 DEBUGASSERT(conn->handler->connect_it);
5333 result = conn->handler->connect_it(conn, &done);
5335 /* Setup a "faked" transfer that'll do nothing */
5336 if(CURLE_OK == result) {
5338 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5340 ConnectionStore(data, conn);
5343 * Setup whatever necessary for a resumed transfer
5345 result = setup_range(data);
5347 DEBUGASSERT(conn->handler->done);
5348 /* we ignore the return code for the protocol-specific DONE */
5349 (void)conn->handler->done(conn, result, FALSE);
5353 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5354 -1, NULL); /* no upload */
5357 /* since we skip do_init() */
5364 /* Get a cloned copy of the SSL config situation stored in the
5365 connection struct. But to get this going nicely, we must first make
5366 sure that the strings in the master copy are pointing to the correct
5367 strings in the session handle strings array!
5369 Keep in mind that the pointers in the master copy are pointing to strings
5370 that will be freed as part of the SessionHandle struct, but all cloned
5371 copies will be separately allocated.
5373 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5374 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5375 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5376 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5377 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5378 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5379 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5381 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5382 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5385 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5386 result = CURLE_OUT_OF_MEMORY;
5390 /*************************************************************
5391 * Check the current list of connections to see if we can
5392 * re-use an already existing one or if we have to create a
5394 *************************************************************/
5396 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5397 we only acknowledge this option if this is not a re-used connection
5398 already (which happens due to follow-location or during a HTTP
5399 authentication phase). */
5400 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5403 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5405 /* If we found a reusable connection, we may still want to
5406 open a new connection if we are pipelining. */
5407 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5408 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5410 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5411 conn_temp->connection_id, pipelen);
5413 if(conn_temp->bundle->num_connections < max_host_connections &&
5414 data->state.conn_cache->num_connections < max_total_connections) {
5415 /* We want a new connection anyway */
5418 infof(data, "We can reuse, but we want a new connection anyway\n");
5425 * We already have a connection for this, we got the former connection
5426 * in the conn_temp variable and thus we need to cleanup the one we
5427 * just allocated before we can move along and use the previously
5430 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5431 handle in a multi stack may nick it */
5432 reuse_conn(conn, conn_temp);
5433 free(conn); /* we don't need this anymore */
5437 /* set a pointer to the hostname we display */
5438 fix_hostname(data, conn, &conn->host);
5440 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5441 conn->connection_id,
5442 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5445 /* We have decided that we want a new connection. However, we may not
5446 be able to do that if we have reached the limit of how many
5447 connections we are allowed to open. */
5448 struct connectbundle *bundle;
5450 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5452 if(max_host_connections > 0 && bundle &&
5453 (bundle->num_connections >= max_host_connections)) {
5454 struct connectdata *conn_candidate;
5456 /* The bundle is full. Let's see if we can kill a connection. */
5457 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5459 if(conn_candidate) {
5460 /* Set the connection's owner correctly, then kill it */
5461 conn_candidate->data = data;
5462 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5465 no_connections_available = TRUE;
5468 if(max_total_connections > 0 &&
5469 (data->state.conn_cache->num_connections >= max_total_connections)) {
5470 struct connectdata *conn_candidate;
5472 /* The cache is full. Let's see if we can kill a connection. */
5473 conn_candidate = find_oldest_idle_connection(data);
5475 if(conn_candidate) {
5476 /* Set the connection's owner correctly, then kill it */
5477 conn_candidate->data = data;
5478 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5481 no_connections_available = TRUE;
5485 if(no_connections_available) {
5486 infof(data, "No connections available.\n");
5491 result = CURLE_NO_CONNECTION_AVAILABLE;
5496 * This is a brand new connection, so let's store it in the connection
5499 ConnectionStore(data, conn);
5503 /* Mark the connection as used */
5506 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5510 * Setup whatever necessary for a resumed transfer
5512 result = setup_range(data);
5516 /* Continue connectdata initialization here. */
5519 * Inherit the proper values from the urldata struct AFTER we have arranged
5520 * the persistent connection stuff
5522 conn->fread_func = data->set.fread_func;
5523 conn->fread_in = data->set.in;
5524 conn->seek_func = data->set.seek_func;
5525 conn->seek_client = data->set.seek_client;
5527 /*************************************************************
5528 * Resolve the address of the server or proxy
5529 *************************************************************/
5530 result = resolve_server(data, conn, async);
5534 Curl_safefree(options);
5535 Curl_safefree(passwd);
5536 Curl_safefree(user);
5537 Curl_safefree(proxy);
5541 /* Curl_setup_conn() is called after the name resolve initiated in
5542 * create_conn() is all done.
5544 * Curl_setup_conn() also handles reused connections
5546 * conn->data MUST already have been setup fine (in create_conn)
5549 CURLcode Curl_setup_conn(struct connectdata *conn,
5550 bool *protocol_done)
5552 CURLcode result = CURLE_OK;
5553 struct SessionHandle *data = conn->data;
5555 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5557 if(conn->handler->flags & PROTOPT_NONETWORK) {
5558 /* nothing to setup when not using a network */
5559 *protocol_done = TRUE;
5562 *protocol_done = FALSE; /* default to not done */
5564 /* set proxy_connect_closed to false unconditionally already here since it
5565 is used strictly to provide extra information to a parent function in the
5566 case of proxy CONNECT failures and we must make sure we don't have it
5567 lingering set from a previous invoke */
5568 conn->bits.proxy_connect_closed = FALSE;
5571 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5572 * basically anything through a http proxy we can't limit this based on
5575 if(data->set.str[STRING_USERAGENT]) {
5576 Curl_safefree(conn->allocptr.uagent);
5577 conn->allocptr.uagent =
5578 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5579 if(!conn->allocptr.uagent)
5580 return CURLE_OUT_OF_MEMORY;
5583 data->req.headerbytecount = 0;
5585 #ifdef CURL_DO_LINEEND_CONV
5586 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5587 #endif /* CURL_DO_LINEEND_CONV */
5589 /* set start time here for timeout purposes in the connect procedure, it
5590 is later set again for the progress meter purpose */
5591 conn->now = Curl_tvnow();
5593 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5594 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5595 result = Curl_connecthost(conn, conn->dns_entry);
5600 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5601 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5602 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5603 *protocol_done = TRUE;
5604 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5605 Curl_verboseconnect(conn);
5608 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5609 set this here perhaps a second time */
5613 * This check is quite a hack. We're calling _fsetmode to fix the problem
5614 * with fwrite converting newline characters (you get mangled text files,
5615 * and corrupted binary files when you download to stdout and redirect it to
5619 if((data->set.out)->_handle == NULL) {
5620 _fsetmode(stdout, "b");
5627 CURLcode Curl_connect(struct SessionHandle *data,
5628 struct connectdata **in_connect,
5630 bool *protocol_done)
5634 *asyncp = FALSE; /* assume synchronous resolves by default */
5636 /* call the stuff that needs to be called */
5637 code = create_conn(data, in_connect, asyncp);
5639 if(CURLE_OK == code) {
5641 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5643 *protocol_done = TRUE;
5645 /* DNS resolution is done: that's either because this is a reused
5646 connection, in which case DNS was unnecessary, or because DNS
5647 really did finish already (synch resolver/fast async resolve) */
5648 code = Curl_setup_conn(*in_connect, protocol_done);
5652 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5657 if(code && *in_connect) {
5658 /* We're not allowed to return failure with memory left allocated
5659 in the connectdata struct, free those here */
5660 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5661 *in_connect = NULL; /* return a NULL */
5667 CURLcode Curl_done(struct connectdata **connp,
5668 CURLcode status, /* an error if this is called after an
5669 error was detected */
5673 struct connectdata *conn;
5674 struct SessionHandle *data;
5676 DEBUGASSERT(*connp);
5682 /* Stop if Curl_done() has already been called */
5685 Curl_getoff_all_pipelines(data, conn);
5687 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5688 !data->set.reuse_forbid &&
5690 /* Stop if pipeline is not empty and we do not have to close
5694 conn->bits.done = TRUE; /* called just now! */
5696 /* Cleanup possible redirect junk */
5697 if(data->req.newurl) {
5698 free(data->req.newurl);
5699 data->req.newurl = NULL;
5701 if(data->req.location) {
5702 free(data->req.location);
5703 data->req.location = NULL;
5706 Curl_resolver_cancel(conn);
5708 if(conn->dns_entry) {
5709 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5710 conn->dns_entry = NULL;
5714 case CURLE_ABORTED_BY_CALLBACK:
5715 case CURLE_READ_ERROR:
5716 case CURLE_WRITE_ERROR:
5717 /* When we're aborted due to a callback return code it basically have to
5718 be counted as premature as there is trouble ahead if we don't. We have
5719 many callbacks and protocols work differently, we could potentially do
5720 this more fine-grained in the future. */
5726 /* this calls the protocol-specific function pointer previously set */
5727 if(conn->handler->done)
5728 result = conn->handler->done(conn, status, premature);
5732 if(Curl_pgrsDone(conn) && !result)
5733 result = CURLE_ABORTED_BY_CALLBACK;
5735 /* if the transfer was completed in a paused state there can be buffered
5736 data left to write and then kill */
5737 if(data->state.tempwrite) {
5738 free(data->state.tempwrite);
5739 data->state.tempwrite = NULL;
5742 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5743 forced us to close this no matter what we think.
5745 if conn->bits.close is TRUE, it means that the connection should be
5746 closed in spite of all our efforts to be nice, due to protocol
5747 restrictions in our or the server's end
5749 if premature is TRUE, it means this connection was said to be DONE before
5750 the entire request operation is complete and thus we can't know in what
5751 state it is for re-using, so we're forced to close it. In a perfect world
5752 we can add code that keep track of if we really must close it here or not,
5753 but currently we have no such detail knowledge.
5755 if(data->set.reuse_forbid || conn->bits.close || premature) {
5756 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5758 /* If we had an error already, make sure we return that one. But
5759 if we got a new error, return that. */
5764 /* the connection is no longer in use */
5765 if(ConnectionDone(data, conn)) {
5766 /* remember the most recently used connection */
5767 data->state.lastconnect = conn;
5769 infof(data, "Connection #%ld to host %s left intact\n",
5770 conn->connection_id,
5771 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5774 data->state.lastconnect = NULL;
5777 *connp = NULL; /* to make the caller of this function better detect that
5778 this was either closed or handed over to the connection
5779 cache here, and therefore cannot be used from this point on
5781 Curl_free_request_state(data);
5787 * do_init() inits the readwrite session. This is inited each time (in the DO
5788 * function before the protocol-specific DO functions are invoked) for a
5789 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5790 * nothing in here depends on stuff that are setup dynamically for the
5794 static CURLcode do_init(struct connectdata *conn)
5796 struct SessionHandle *data = conn->data;
5797 struct SingleRequest *k = &data->req;
5799 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5800 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5801 data->state.expect100header = FALSE;
5803 if(data->set.opt_no_body)
5804 /* in HTTP lingo, no body means using the HEAD request... */
5805 data->set.httpreq = HTTPREQ_HEAD;
5806 else if(HTTPREQ_HEAD == data->set.httpreq)
5807 /* ... but if unset there really is no perfect method that is the
5808 "opposite" of HEAD but in reality most people probably think GET
5809 then. The important thing is that we can't let it remain HEAD if the
5810 opt_no_body is set FALSE since then we'll behave wrong when getting
5812 data->set.httpreq = HTTPREQ_GET;
5814 k->start = Curl_tvnow(); /* start time */
5815 k->now = k->start; /* current time is now */
5816 k->header = TRUE; /* assume header */
5820 k->buf = data->state.buffer;
5821 k->uploadbuf = data->state.uploadbuffer;
5822 k->hbufp = data->state.headerbuff;
5823 k->ignorebody=FALSE;
5825 Curl_speedinit(data);
5827 Curl_pgrsSetUploadCounter(data, 0);
5828 Curl_pgrsSetDownloadCounter(data, 0);
5834 * do_complete is called when the DO actions are complete.
5836 * We init chunking and trailer bits to their default values here immediately
5837 * before receiving any header data for the current request in the pipeline.
5839 static void do_complete(struct connectdata *conn)
5841 conn->data->req.chunk=FALSE;
5842 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5843 conn->sockfd:conn->writesockfd)+1;
5844 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5847 CURLcode Curl_do(struct connectdata **connp, bool *done)
5849 CURLcode result=CURLE_OK;
5850 struct connectdata *conn = *connp;
5851 struct SessionHandle *data = conn->data;
5853 if(conn->handler->do_it) {
5854 /* generic protocol-specific function pointer set in curl_connect() */
5855 result = conn->handler->do_it(conn, done);
5857 /* This was formerly done in transfer.c, but we better do it here */
5858 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5860 * If the connection is using an easy handle, call reconnect
5861 * to re-establish the connection. Otherwise, let the multi logic
5862 * figure out how to re-establish the connection.
5865 result = Curl_reconnect_request(connp);
5867 if(result == CURLE_OK) {
5868 /* ... finally back to actually retry the DO phase */
5869 conn = *connp; /* re-assign conn since Curl_reconnect_request
5870 creates a new connection */
5871 result = conn->handler->do_it(conn, done);
5878 if((result == CURLE_OK) && *done)
5879 /* do_complete must be called after the protocol-specific DO function */
5886 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5887 * second stage DO state which (wrongly) was introduced to support FTP's
5888 * second connection.
5890 * TODO: A future libcurl should be able to work away this state.
5892 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5893 * DOING state there's more work to do!
5896 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5898 CURLcode result=CURLE_OK;
5902 if(conn->handler->do_more)
5903 result = conn->handler->do_more(conn, complete);
5905 if(!result && (*complete == 1))
5906 /* do_complete must be called after the protocol-specific DO function */