1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **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,
305 CURLcode result = CURLE_OK;
308 char *options = NULL;
310 /* Parse the login details if specified. It not then we treat NULL as a hint
311 to clear the existing data */
313 result = parse_login_details(option, strlen(option),
314 (userp ? &user : NULL),
315 (passwdp ? &passwd : NULL),
316 (optionsp ? &options : NULL));
320 /* Store the username part of option if required */
322 if(!user && option && option[0] == ':') {
323 /* Allocate an empty string instead of returning NULL as user name */
326 result = CURLE_OUT_OF_MEMORY;
329 Curl_safefree(*userp);
333 /* Store the password part of option if required */
335 Curl_safefree(*passwdp);
339 /* Store the options part of option if required */
341 Curl_safefree(*optionsp);
349 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
351 CURLcode r = CURLE_OK;
354 /* Copy src->set into dst->set first, then deal with the strings
358 /* clear all string pointers first */
359 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
361 /* duplicate all strings */
362 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
363 r = setstropt(&dst->set.str[i], src->set.str[i]);
368 /* If a failure occurred, freeing has to be performed externally. */
373 * This is the internal function curl_easy_cleanup() calls. This should
374 * cleanup and free all resources associated with this sessionhandle.
376 * NOTE: if we ever add something that attempts to write to a socket or
377 * similar here, we must ignore SIGPIPE first. It is currently only done
378 * when curl_easy_perform() is invoked.
381 CURLcode Curl_close(struct SessionHandle *data)
383 struct Curl_multi *m;
388 Curl_expire(data, 0); /* shut off timers */
393 /* This handle is still part of a multi handle, take care of this first
394 and detach this handle from there. */
395 curl_multi_remove_handle(data->multi, data);
398 /* when curl_easy_perform() is used, it creates its own multi handle to
399 use and this is the one */
400 curl_multi_cleanup(data->multi_easy);
402 /* Destroy the timeout list that is held in the easy handle. It is
403 /normally/ done by curl_multi_remove_handle() but this is "just in
405 if(data->state.timeoutlist) {
406 Curl_llist_destroy(data->state.timeoutlist, NULL);
407 data->state.timeoutlist = NULL;
410 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
411 the multi handle, since that function uses the magic
414 if(data->state.rangestringalloc)
415 free(data->state.range);
417 /* Free the pathbuffer */
418 Curl_safefree(data->state.pathbuffer);
419 data->state.path = NULL;
421 /* freed here just in case DONE wasn't called */
422 Curl_free_request_state(data);
424 /* Close down all open SSL info and sessions */
425 Curl_ssl_close_all(data);
426 Curl_safefree(data->state.first_host);
427 Curl_safefree(data->state.scratch);
428 Curl_ssl_free_certinfo(data);
430 if(data->change.referer_alloc) {
431 Curl_safefree(data->change.referer);
432 data->change.referer_alloc = FALSE;
434 data->change.referer = NULL;
436 if(data->change.url_alloc) {
437 Curl_safefree(data->change.url);
438 data->change.url_alloc = FALSE;
440 data->change.url = NULL;
442 Curl_safefree(data->state.headerbuff);
444 Curl_flush_cookies(data, 1);
446 Curl_digest_cleanup(data);
448 Curl_safefree(data->info.contenttype);
449 Curl_safefree(data->info.wouldredirect);
451 /* this destroys the channel and we cannot use it anymore after this */
452 Curl_resolver_cleanup(data->state.resolver);
454 Curl_convert_close(data);
456 /* No longer a dirty share, if it exists */
458 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
459 data->share->dirty--;
460 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
469 * Initialize the UserDefined fields within a SessionHandle.
470 * This may be safely called on a new or existing SessionHandle.
472 CURLcode Curl_init_userdefined(struct UserDefined *set)
474 CURLcode res = CURLE_OK;
476 set->out = stdout; /* default output to stdout */
477 set->in = stdin; /* default input from stdin */
478 set->err = stderr; /* default stderr to stderr */
480 /* use fwrite as default function to store output */
481 set->fwrite_func = (curl_write_callback)fwrite;
483 /* use fread as default function to read input */
484 set->fread_func = (curl_read_callback)fread;
485 set->is_fread_set = 0;
486 set->is_fwrite_set = 0;
488 set->seek_func = ZERO_NULL;
489 set->seek_client = ZERO_NULL;
491 /* conversion callbacks for non-ASCII hosts */
492 set->convfromnetwork = ZERO_NULL;
493 set->convtonetwork = ZERO_NULL;
494 set->convfromutf8 = ZERO_NULL;
496 set->infilesize = -1; /* we don't know any size */
497 set->postfieldsize = -1; /* unknown size */
498 set->maxredirs = -1; /* allow any amount by default */
500 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
501 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
502 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
503 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
504 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
505 set->ftp_filemethod = FTPFILE_MULTICWD;
507 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
509 /* Set the default size of the SSL session ID cache */
510 set->ssl.max_ssl_sessions = 5;
512 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
513 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
514 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
515 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
517 /* make libcurl quiet by default: */
518 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
521 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
522 * switched off unless wanted.
524 set->ssl.verifypeer = TRUE;
525 set->ssl.verifyhost = TRUE;
527 set->ssl.authtype = CURL_TLSAUTH_NONE;
529 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
531 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
533 set->new_file_perms = 0644; /* Default permissions */
534 set->new_directory_perms = 0755; /* Default permissions */
536 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
537 define since we internally only use the lower 16 bits for the passed
538 in bitmask to not conflict with the private bits */
539 set->allowed_protocols = CURLPROTO_ALL;
540 set->redir_protocols =
541 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
543 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
545 * disallow unprotected protection negotiation NEC reference implementation
546 * seem not to follow rfc1961 section 4.3/4.4
548 set->socks5_gssapi_nec = FALSE;
549 /* set default gssapi service name */
550 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
551 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
556 /* This is our preferred CA cert bundle/path since install time */
557 #if defined(CURL_CA_BUNDLE)
558 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
559 #elif defined(CURL_CA_PATH)
560 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
563 set->wildcardmatch = FALSE;
564 set->chunk_bgn = ZERO_NULL;
565 set->chunk_end = ZERO_NULL;
567 /* tcp keepalives are disabled by default, but provide reasonable values for
568 * the interval and idle times.
570 set->tcp_keepalive = FALSE;
571 set->tcp_keepintvl = 60;
572 set->tcp_keepidle = 60;
580 * @param curl is a pointer to a sessionhandle pointer that gets set by this
585 CURLcode Curl_open(struct SessionHandle **curl)
587 CURLcode res = CURLE_OK;
588 struct SessionHandle *data;
591 /* Very simple start-up: alloc the struct, init it with zeroes and return */
592 data = calloc(1, sizeof(struct SessionHandle));
594 /* this is a very serious error */
595 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
596 return CURLE_OUT_OF_MEMORY;
599 data->magic = CURLEASY_MAGIC_NUMBER;
601 status = Curl_resolver_init(&data->state.resolver);
603 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
608 /* We do some initial setup here, all those fields that can't be just 0 */
610 data->state.headerbuff = malloc(HEADERSIZE);
611 if(!data->state.headerbuff) {
612 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
613 res = CURLE_OUT_OF_MEMORY;
616 res = Curl_init_userdefined(&data->set);
618 data->state.headersize=HEADERSIZE;
620 Curl_convert_init(data);
622 /* most recent connection is not yet defined */
623 data->state.lastconnect = NULL;
625 data->progress.flags |= PGRS_HIDE;
626 data->state.current_speed = -1; /* init to negative == impossible */
628 data->wildcard.state = CURLWC_INIT;
629 data->wildcard.filelist = NULL;
630 data->set.fnmatch = ZERO_NULL;
631 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
635 Curl_resolver_cleanup(data->state.resolver);
636 if(data->state.headerbuff)
637 free(data->state.headerbuff);
648 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
652 CURLcode result = CURLE_OK;
654 #ifndef CURL_DISABLE_HTTP
659 case CURLOPT_DNS_CACHE_TIMEOUT:
660 data->set.dns_cache_timeout = va_arg(param, long);
662 case CURLOPT_DNS_USE_GLOBAL_CACHE:
663 /* remember we want this enabled */
664 arg = va_arg(param, long);
665 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
667 case CURLOPT_SSL_CIPHER_LIST:
668 /* set a list of cipher we want to use in the SSL connection */
669 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
670 va_arg(param, char *));
673 case CURLOPT_RANDOM_FILE:
675 * This is the path name to a file that contains random data to seed
676 * the random SSL stuff with. The file is only used for reading.
678 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
679 va_arg(param, char *));
681 case CURLOPT_EGDSOCKET:
683 * The Entropy Gathering Daemon socket pathname
685 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
686 va_arg(param, char *));
688 case CURLOPT_MAXCONNECTS:
690 * Set the absolute number of maximum simultaneous alive connection that
691 * libcurl is allowed to have.
693 data->set.maxconnects = va_arg(param, long);
695 case CURLOPT_FORBID_REUSE:
697 * When this transfer is done, it must not be left to be reused by a
698 * subsequent transfer but shall be closed immediately.
700 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
702 case CURLOPT_FRESH_CONNECT:
704 * This transfer shall not use a previously cached connection but
705 * should be made with a fresh new connect!
707 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
709 case CURLOPT_VERBOSE:
711 * Verbose means infof() calls that give a lot of information about
712 * the connection and transfer procedures as well as internal choices.
714 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
718 * Set to include the header in the general data output stream.
720 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
722 case CURLOPT_NOPROGRESS:
724 * Shut off the internal supported progress meter
726 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
727 if(data->set.hide_progress)
728 data->progress.flags |= PGRS_HIDE;
730 data->progress.flags &= ~PGRS_HIDE;
734 * Do not include the body part in the output data stream.
736 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
738 case CURLOPT_FAILONERROR:
740 * Don't output the >=300 error code HTML-page, but instead only
743 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
748 * We want to sent data to the remote host. If this is HTTP, that equals
749 * using the PUT request.
751 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
752 if(data->set.upload) {
753 /* If this is HTTP, PUT is what's needed to "upload" */
754 data->set.httpreq = HTTPREQ_PUT;
755 data->set.opt_no_body = FALSE; /* this is implied */
758 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
759 then this can be changed to HEAD later on) */
760 data->set.httpreq = HTTPREQ_GET;
762 case CURLOPT_FILETIME:
764 * Try to get the file time of the remote document. The time will
765 * later (possibly) become available using curl_easy_getinfo().
767 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
769 case CURLOPT_FTP_CREATE_MISSING_DIRS:
771 * An FTP option that modifies an upload to create missing directories on
774 switch(va_arg(param, long)) {
776 data->set.ftp_create_missing_dirs = 0;
779 data->set.ftp_create_missing_dirs = 1;
782 data->set.ftp_create_missing_dirs = 2;
785 /* reserve other values for future use */
786 result = CURLE_UNKNOWN_OPTION;
790 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
792 * Option that specifies how quickly an server response must be obtained
793 * before it is considered failure. For pingpong protocols.
795 data->set.server_response_timeout = va_arg( param , long ) * 1000;
797 case CURLOPT_TFTP_BLKSIZE:
799 * TFTP option that specifies the block size to use for data transmission
801 data->set.tftp_blksize = va_arg(param, long);
803 case CURLOPT_DIRLISTONLY:
805 * An option that changes the command to one that asks for a list
806 * only, no file info details.
808 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
812 * We want to upload and append to an existing file.
814 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
816 case CURLOPT_FTP_FILEMETHOD:
818 * How do access files over FTP.
820 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
824 * Parse the $HOME/.netrc file
826 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
828 case CURLOPT_NETRC_FILE:
830 * Use this file instead of the $HOME/.netrc file
832 result = setstropt(&data->set.str[STRING_NETRC_FILE],
833 va_arg(param, char *));
835 case CURLOPT_TRANSFERTEXT:
837 * This option was previously named 'FTPASCII'. Renamed to work with
838 * more protocols than merely FTP.
840 * Transfer using ASCII (instead of BINARY).
842 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
844 case CURLOPT_TIMECONDITION:
846 * Set HTTP time condition. This must be one of the defines in the
847 * curl/curl.h header file.
849 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
851 case CURLOPT_TIMEVALUE:
853 * This is the value to compare with the remote document with the
854 * method set with CURLOPT_TIMECONDITION
856 data->set.timevalue = (time_t)va_arg(param, long);
858 case CURLOPT_SSLVERSION:
860 * Set explicit SSL version to try to connect with, as some SSL
861 * implementations are lame.
863 data->set.ssl.version = va_arg(param, long);
866 #ifndef CURL_DISABLE_HTTP
867 case CURLOPT_AUTOREFERER:
869 * Switch on automatic referer that gets set if curl follows locations.
871 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
874 case CURLOPT_ACCEPT_ENCODING:
876 * String to use at the value of Accept-Encoding header.
878 * If the encoding is set to "" we use an Accept-Encoding header that
879 * encompasses all the encodings we support.
880 * If the encoding is set to NULL we don't send an Accept-Encoding header
881 * and ignore an received Content-Encoding header.
884 argptr = va_arg(param, char *);
885 result = setstropt(&data->set.str[STRING_ENCODING],
886 (argptr && !*argptr)?
887 (char *) ALL_CONTENT_ENCODINGS: argptr);
890 case CURLOPT_TRANSFER_ENCODING:
891 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
894 case CURLOPT_FOLLOWLOCATION:
896 * Follow Location: header hints on a HTTP-server.
898 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
901 case CURLOPT_UNRESTRICTED_AUTH:
903 * Send authentication (user+password) when following locations, even when
906 data->set.http_disable_hostname_check_before_authentication =
907 (0 != va_arg(param, long))?TRUE:FALSE;
910 case CURLOPT_MAXREDIRS:
912 * The maximum amount of hops you allow curl to follow Location:
913 * headers. This should mostly be used to detect never-ending loops.
915 data->set.maxredirs = va_arg(param, long);
918 case CURLOPT_POSTREDIR:
921 * Set the behaviour of POST when redirecting
922 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
923 * CURL_REDIR_POST_301 - POST is kept as POST after 301
924 * CURL_REDIR_POST_302 - POST is kept as POST after 302
925 * CURL_REDIR_POST_303 - POST is kept as POST after 303
926 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
927 * other - POST is kept as POST after 301 and 302
929 int postRedir = curlx_sltosi(va_arg(param, long));
930 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
935 /* Does this option serve a purpose anymore? Yes it does, when
936 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
938 if(va_arg(param, long)) {
939 data->set.httpreq = HTTPREQ_POST;
940 data->set.opt_no_body = FALSE; /* this is implied */
943 data->set.httpreq = HTTPREQ_GET;
946 case CURLOPT_COPYPOSTFIELDS:
948 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
949 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
950 * CURLOPT_COPYPOSTFIELDS and not altered later.
952 argptr = va_arg(param, char *);
954 if(!argptr || data->set.postfieldsize == -1)
955 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
958 * Check that requested length does not overflow the size_t type.
961 if((data->set.postfieldsize < 0) ||
962 ((sizeof(curl_off_t) != sizeof(size_t)) &&
963 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
964 result = CURLE_OUT_OF_MEMORY;
968 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
970 /* Allocate even when size == 0. This satisfies the need of possible
971 later address compare to detect the COPYPOSTFIELDS mode, and
972 to mark that postfields is used rather than read function or
975 p = malloc((size_t)(data->set.postfieldsize?
976 data->set.postfieldsize:1));
979 result = CURLE_OUT_OF_MEMORY;
981 if(data->set.postfieldsize)
982 memcpy(p, argptr, (size_t)data->set.postfieldsize);
984 data->set.str[STRING_COPYPOSTFIELDS] = p;
989 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
990 data->set.httpreq = HTTPREQ_POST;
993 case CURLOPT_POSTFIELDS:
995 * Like above, but use static data instead of copying it.
997 data->set.postfields = va_arg(param, void *);
998 /* Release old copied data. */
999 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1000 data->set.httpreq = HTTPREQ_POST;
1003 case CURLOPT_POSTFIELDSIZE:
1005 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1006 * figure it out. Enables binary posts.
1008 bigsize = va_arg(param, long);
1010 if(data->set.postfieldsize < bigsize &&
1011 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1012 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1013 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1014 data->set.postfields = NULL;
1017 data->set.postfieldsize = bigsize;
1020 case CURLOPT_POSTFIELDSIZE_LARGE:
1022 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1023 * figure it out. Enables binary posts.
1025 bigsize = va_arg(param, curl_off_t);
1027 if(data->set.postfieldsize < bigsize &&
1028 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1029 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1030 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1031 data->set.postfields = NULL;
1034 data->set.postfieldsize = bigsize;
1037 case CURLOPT_HTTPPOST:
1039 * Set to make us do HTTP POST
1041 data->set.httppost = va_arg(param, struct curl_httppost *);
1042 data->set.httpreq = HTTPREQ_POST_FORM;
1043 data->set.opt_no_body = FALSE; /* this is implied */
1046 case CURLOPT_REFERER:
1048 * String to set in the HTTP Referer: field.
1050 if(data->change.referer_alloc) {
1051 Curl_safefree(data->change.referer);
1052 data->change.referer_alloc = FALSE;
1054 result = setstropt(&data->set.str[STRING_SET_REFERER],
1055 va_arg(param, char *));
1056 data->change.referer = data->set.str[STRING_SET_REFERER];
1059 case CURLOPT_USERAGENT:
1061 * String to use in the HTTP User-Agent field
1063 result = setstropt(&data->set.str[STRING_USERAGENT],
1064 va_arg(param, char *));
1067 case CURLOPT_HTTPHEADER:
1069 * Set a list with HTTP headers to use (or replace internals with)
1071 data->set.headers = va_arg(param, struct curl_slist *);
1074 case CURLOPT_HTTP200ALIASES:
1076 * Set a list of aliases for HTTP 200 in response header
1078 data->set.http200aliases = va_arg(param, struct curl_slist *);
1081 #if !defined(CURL_DISABLE_COOKIES)
1082 case CURLOPT_COOKIE:
1084 * Cookie string to send to the remote server in the request.
1086 result = setstropt(&data->set.str[STRING_COOKIE],
1087 va_arg(param, char *));
1090 case CURLOPT_COOKIEFILE:
1092 * Set cookie file to read and parse. Can be used multiple times.
1094 argptr = (char *)va_arg(param, void *);
1096 struct curl_slist *cl;
1097 /* append the cookie file name to the list of file names, and deal with
1099 cl = curl_slist_append(data->change.cookielist, argptr);
1101 curl_slist_free_all(data->change.cookielist);
1102 data->change.cookielist = NULL;
1103 return CURLE_OUT_OF_MEMORY;
1105 data->change.cookielist = cl; /* store the list for later use */
1109 case CURLOPT_COOKIEJAR:
1111 * Set cookie file name to dump all cookies to when we're done.
1113 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1114 va_arg(param, char *));
1117 * Activate the cookie parser. This may or may not already
1120 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1121 data->set.cookiesession);
1124 case CURLOPT_COOKIESESSION:
1126 * Set this option to TRUE to start a new "cookie session". It will
1127 * prevent the forthcoming read-cookies-from-file actions to accept
1128 * cookies that are marked as being session cookies, as they belong to a
1131 * In the original Netscape cookie spec, "session cookies" are cookies
1132 * with no expire date set. RFC2109 describes the same action if no
1133 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1134 * a 'Discard' action that can enforce the discard even for cookies that
1137 * We run mostly with the original cookie spec, as hardly anyone implements
1140 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1143 case CURLOPT_COOKIELIST:
1144 argptr = va_arg(param, char *);
1149 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1151 if(Curl_raw_equal(argptr, "ALL")) {
1152 /* clear all cookies */
1153 Curl_cookie_clearall(data->cookies);
1155 else if(Curl_raw_equal(argptr, "SESS")) {
1156 /* clear session cookies */
1157 Curl_cookie_clearsess(data->cookies);
1159 else if(Curl_raw_equal(argptr, "FLUSH")) {
1160 /* flush cookies to file */
1161 Curl_flush_cookies(data, 0);
1165 /* if cookie engine was not running, activate it */
1166 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1168 argptr = strdup(argptr);
1170 result = CURLE_OUT_OF_MEMORY;
1174 if(checkprefix("Set-Cookie:", argptr))
1175 /* HTTP Header format line */
1176 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1179 /* Netscape format line */
1180 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1185 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1188 #endif /* CURL_DISABLE_COOKIES */
1190 case CURLOPT_HTTPGET:
1192 * Set to force us do HTTP GET
1194 if(va_arg(param, long)) {
1195 data->set.httpreq = HTTPREQ_GET;
1196 data->set.upload = FALSE; /* switch off upload */
1197 data->set.opt_no_body = FALSE; /* this is implied */
1201 case CURLOPT_HTTP_VERSION:
1203 * This sets a requested HTTP version to be used. The value is one of
1204 * the listed enums in curl/curl.h.
1206 data->set.httpversion = va_arg(param, long);
1209 case CURLOPT_HTTPAUTH:
1211 * Set HTTP Authentication type BITMASK.
1216 unsigned long auth = va_arg(param, unsigned long);
1218 if(auth == CURLAUTH_NONE) {
1219 data->set.httpauth = auth;
1223 /* the DIGEST_IE bit is only used to set a special marker, for all the
1224 rest we need to handle it as normal DIGEST */
1225 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1227 if(auth & CURLAUTH_DIGEST_IE) {
1228 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1229 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1232 /* switch off bits we can't support */
1234 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1235 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1236 #elif !defined(NTLM_WB_ENABLED)
1237 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1239 #ifndef USE_HTTP_NEGOTIATE
1240 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1244 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1247 while(bitcheck < 31) {
1248 if(auth & (1UL << bitcheck++)) {
1254 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1256 data->set.httpauth = auth;
1260 #endif /* CURL_DISABLE_HTTP */
1262 case CURLOPT_CUSTOMREQUEST:
1264 * Set a custom string to use as request
1266 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1267 va_arg(param, char *));
1270 data->set.httpreq = HTTPREQ_CUSTOM;
1271 here, we continue as if we were using the already set type
1272 and this just changes the actual request keyword */
1275 #ifndef CURL_DISABLE_PROXY
1276 case CURLOPT_HTTPPROXYTUNNEL:
1278 * Tunnel operations through the proxy instead of normal proxy use
1280 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1283 case CURLOPT_PROXYPORT:
1285 * Explicitly set HTTP proxy port number.
1287 data->set.proxyport = va_arg(param, long);
1290 case CURLOPT_PROXYAUTH:
1292 * Set HTTP Authentication type BITMASK.
1297 unsigned long auth = va_arg(param, unsigned long);
1299 if(auth == CURLAUTH_NONE) {
1300 data->set.proxyauth = auth;
1304 /* the DIGEST_IE bit is only used to set a special marker, for all the
1305 rest we need to handle it as normal DIGEST */
1306 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1308 if(auth & CURLAUTH_DIGEST_IE) {
1309 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1310 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1312 /* switch off bits we can't support */
1314 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1315 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1316 #elif !defined(NTLM_WB_ENABLED)
1317 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1319 #ifndef USE_HTTP_NEGOTIATE
1320 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1324 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1327 while(bitcheck < 31) {
1328 if(auth & (1UL << bitcheck++)) {
1334 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1336 data->set.proxyauth = auth;
1342 * Set proxy server:port to use as HTTP proxy.
1344 * If the proxy is set to "" we explicitly say that we don't want to use a
1345 * proxy (even though there might be environment variables saying so).
1347 * Setting it to NULL, means no proxy but allows the environment variables
1350 result = setstropt(&data->set.str[STRING_PROXY],
1351 va_arg(param, char *));
1354 case CURLOPT_PROXYTYPE:
1356 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1358 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1361 case CURLOPT_PROXY_TRANSFER_MODE:
1363 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1365 switch (va_arg(param, long)) {
1367 data->set.proxy_transfer_mode = FALSE;
1370 data->set.proxy_transfer_mode = TRUE;
1373 /* reserve other values for future use */
1374 result = CURLE_UNKNOWN_OPTION;
1378 #endif /* CURL_DISABLE_PROXY */
1380 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1381 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1383 * Set gssapi service name
1385 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1386 va_arg(param, char *));
1389 case CURLOPT_SOCKS5_GSSAPI_NEC:
1391 * set flag for nec socks5 support
1393 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1397 case CURLOPT_WRITEHEADER:
1399 * Custom pointer to pass the header write callback function
1401 data->set.writeheader = (void *)va_arg(param, void *);
1403 case CURLOPT_ERRORBUFFER:
1405 * Error buffer provided by the caller to get the human readable
1408 data->set.errorbuffer = va_arg(param, char *);
1412 * FILE pointer to write to. Or possibly
1413 * used as argument to the write callback.
1415 data->set.out = va_arg(param, void *);
1417 case CURLOPT_FTPPORT:
1419 * Use FTP PORT, this also specifies which IP address to use
1421 result = setstropt(&data->set.str[STRING_FTPPORT],
1422 va_arg(param, char *));
1423 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1427 case CURLOPT_FTP_USE_EPRT:
1428 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1431 case CURLOPT_FTP_USE_EPSV:
1432 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1435 case CURLOPT_FTP_USE_PRET:
1436 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1439 case CURLOPT_FTP_SSL_CCC:
1440 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1443 case CURLOPT_FTP_SKIP_PASV_IP:
1445 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1446 * bypass of the IP address in PASV responses.
1448 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1451 case CURLOPT_INFILE:
1453 * FILE pointer to read the file to be uploaded from. Or possibly
1454 * used as argument to the read callback.
1456 data->set.in = va_arg(param, void *);
1458 case CURLOPT_INFILESIZE:
1460 * If known, this should inform curl about the file size of the
1461 * to-be-uploaded file.
1463 data->set.infilesize = va_arg(param, long);
1465 case CURLOPT_INFILESIZE_LARGE:
1467 * If known, this should inform curl about the file size of the
1468 * to-be-uploaded file.
1470 data->set.infilesize = va_arg(param, curl_off_t);
1472 case CURLOPT_LOW_SPEED_LIMIT:
1474 * The low speed limit that if transfers are below this for
1475 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1477 data->set.low_speed_limit=va_arg(param, long);
1479 case CURLOPT_MAX_SEND_SPEED_LARGE:
1481 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1482 * bytes per second the transfer is throttled..
1484 data->set.max_send_speed=va_arg(param, curl_off_t);
1486 case CURLOPT_MAX_RECV_SPEED_LARGE:
1488 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1489 * second the transfer is throttled..
1491 data->set.max_recv_speed=va_arg(param, curl_off_t);
1493 case CURLOPT_LOW_SPEED_TIME:
1495 * The low speed time that if transfers are below the set
1496 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1498 data->set.low_speed_time=va_arg(param, long);
1504 if(data->change.url_alloc) {
1505 /* the already set URL is allocated, free it first! */
1506 Curl_safefree(data->change.url);
1507 data->change.url_alloc = FALSE;
1509 result = setstropt(&data->set.str[STRING_SET_URL],
1510 va_arg(param, char *));
1511 data->change.url = data->set.str[STRING_SET_URL];
1515 * The port number to use when getting the URL
1517 data->set.use_port = va_arg(param, long);
1519 case CURLOPT_TIMEOUT:
1521 * The maximum time you allow curl to use for a single transfer
1524 data->set.timeout = va_arg(param, long) * 1000L;
1527 case CURLOPT_TIMEOUT_MS:
1528 data->set.timeout = va_arg(param, long);
1531 case CURLOPT_CONNECTTIMEOUT:
1533 * The maximum time you allow curl to use to connect.
1535 data->set.connecttimeout = va_arg(param, long) * 1000L;
1538 case CURLOPT_CONNECTTIMEOUT_MS:
1539 data->set.connecttimeout = va_arg(param, long);
1542 case CURLOPT_ACCEPTTIMEOUT_MS:
1544 * The maximum time you allow curl to wait for server connect
1546 data->set.accepttimeout = va_arg(param, long);
1549 case CURLOPT_USERPWD:
1551 * user:password;options to use in the operation
1553 result = setstropt_userpwd(va_arg(param, char *),
1554 &data->set.str[STRING_USERNAME],
1555 &data->set.str[STRING_PASSWORD],
1556 &data->set.str[STRING_OPTIONS]);
1558 case CURLOPT_USERNAME:
1560 * authentication user name to use in the operation
1562 result = setstropt(&data->set.str[STRING_USERNAME],
1563 va_arg(param, char *));
1565 case CURLOPT_PASSWORD:
1567 * authentication password to use in the operation
1569 result = setstropt(&data->set.str[STRING_PASSWORD],
1570 va_arg(param, char *));
1572 case CURLOPT_XOAUTH2_BEARER:
1574 * XOAUTH2 bearer token to use in the operation
1576 result = setstropt(&data->set.str[STRING_BEARER],
1577 va_arg(param, char *));
1579 case CURLOPT_POSTQUOTE:
1581 * List of RAW FTP commands to use after a transfer
1583 data->set.postquote = va_arg(param, struct curl_slist *);
1585 case CURLOPT_PREQUOTE:
1587 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1589 data->set.prequote = va_arg(param, struct curl_slist *);
1593 * List of RAW FTP commands to use before a transfer
1595 data->set.quote = va_arg(param, struct curl_slist *);
1597 case CURLOPT_RESOLVE:
1599 * List of NAME:[address] names to populate the DNS cache with
1600 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1602 * Names added with this API will remain in the cache until explicitly
1603 * removed or the handle is cleaned up.
1605 * This API can remove any name from the DNS cache, but only entries
1606 * that aren't actually in use right now will be pruned immediately.
1608 data->set.resolve = va_arg(param, struct curl_slist *);
1609 data->change.resolve = data->set.resolve;
1611 case CURLOPT_PROGRESSFUNCTION:
1613 * Progress callback function
1615 data->set.fprogress = va_arg(param, curl_progress_callback);
1616 if(data->set.fprogress)
1617 data->progress.callback = TRUE; /* no longer internal */
1619 data->progress.callback = FALSE; /* NULL enforces internal */
1622 case CURLOPT_XFERINFOFUNCTION:
1624 * Transfer info callback function
1626 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1627 if(data->set.fxferinfo)
1628 data->progress.callback = TRUE; /* no longer internal */
1630 data->progress.callback = FALSE; /* NULL enforces internal */
1634 case CURLOPT_PROGRESSDATA:
1636 * Custom client data to pass to the progress callback
1638 data->set.progress_client = va_arg(param, void *);
1641 #ifndef CURL_DISABLE_PROXY
1642 case CURLOPT_PROXYUSERPWD:
1644 * user:password needed to use the proxy
1646 result = setstropt_userpwd(va_arg(param, char *),
1647 &data->set.str[STRING_PROXYUSERNAME],
1648 &data->set.str[STRING_PROXYPASSWORD], NULL);
1650 case CURLOPT_PROXYUSERNAME:
1652 * authentication user name to use in the operation
1654 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1655 va_arg(param, char *));
1657 case CURLOPT_PROXYPASSWORD:
1659 * authentication password to use in the operation
1661 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1662 va_arg(param, char *));
1664 case CURLOPT_NOPROXY:
1666 * proxy exception list
1668 result = setstropt(&data->set.str[STRING_NOPROXY],
1669 va_arg(param, char *));
1675 * What range of the file you want to transfer
1677 result = setstropt(&data->set.str[STRING_SET_RANGE],
1678 va_arg(param, char *));
1680 case CURLOPT_RESUME_FROM:
1682 * Resume transfer at the give file position
1684 data->set.set_resume_from = va_arg(param, long);
1686 case CURLOPT_RESUME_FROM_LARGE:
1688 * Resume transfer at the give file position
1690 data->set.set_resume_from = va_arg(param, curl_off_t);
1692 case CURLOPT_DEBUGFUNCTION:
1694 * stderr write callback.
1696 data->set.fdebug = va_arg(param, curl_debug_callback);
1698 * if the callback provided is NULL, it'll use the default callback
1701 case CURLOPT_DEBUGDATA:
1703 * Set to a void * that should receive all error writes. This
1704 * defaults to CURLOPT_STDERR for normal operations.
1706 data->set.debugdata = va_arg(param, void *);
1708 case CURLOPT_STDERR:
1710 * Set to a FILE * that should receive all error writes. This
1711 * defaults to stderr for normal operations.
1713 data->set.err = va_arg(param, FILE *);
1715 data->set.err = stderr;
1717 case CURLOPT_HEADERFUNCTION:
1719 * Set header write callback
1721 data->set.fwrite_header = va_arg(param, curl_write_callback);
1723 case CURLOPT_WRITEFUNCTION:
1725 * Set data write callback
1727 data->set.fwrite_func = va_arg(param, curl_write_callback);
1728 if(!data->set.fwrite_func) {
1729 data->set.is_fwrite_set = 0;
1730 /* When set to NULL, reset to our internal default function */
1731 data->set.fwrite_func = (curl_write_callback)fwrite;
1734 data->set.is_fwrite_set = 1;
1736 case CURLOPT_READFUNCTION:
1738 * Read data callback
1740 data->set.fread_func = va_arg(param, curl_read_callback);
1741 if(!data->set.fread_func) {
1742 data->set.is_fread_set = 0;
1743 /* When set to NULL, reset to our internal default function */
1744 data->set.fread_func = (curl_read_callback)fread;
1747 data->set.is_fread_set = 1;
1749 case CURLOPT_SEEKFUNCTION:
1751 * Seek callback. Might be NULL.
1753 data->set.seek_func = va_arg(param, curl_seek_callback);
1755 case CURLOPT_SEEKDATA:
1757 * Seek control callback. Might be NULL.
1759 data->set.seek_client = va_arg(param, void *);
1761 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1763 * "Convert from network encoding" callback
1765 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1767 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1769 * "Convert to network encoding" callback
1771 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1773 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1775 * "Convert from UTF-8 encoding" callback
1777 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1779 case CURLOPT_IOCTLFUNCTION:
1781 * I/O control callback. Might be NULL.
1783 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1785 case CURLOPT_IOCTLDATA:
1787 * I/O control data pointer. Might be NULL.
1789 data->set.ioctl_client = va_arg(param, void *);
1791 case CURLOPT_SSLCERT:
1793 * String that holds file name of the SSL certificate to use
1795 result = setstropt(&data->set.str[STRING_CERT],
1796 va_arg(param, char *));
1798 case CURLOPT_SSLCERTTYPE:
1800 * String that holds file type of the SSL certificate to use
1802 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1803 va_arg(param, char *));
1805 case CURLOPT_SSLKEY:
1807 * String that holds file name of the SSL key to use
1809 result = setstropt(&data->set.str[STRING_KEY],
1810 va_arg(param, char *));
1812 case CURLOPT_SSLKEYTYPE:
1814 * String that holds file type of the SSL key to use
1816 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1817 va_arg(param, char *));
1819 case CURLOPT_KEYPASSWD:
1821 * String that holds the SSL or SSH private key password.
1823 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1824 va_arg(param, char *));
1826 case CURLOPT_SSLENGINE:
1828 * String that holds the SSL crypto engine.
1830 argptr = va_arg(param, char *);
1831 if(argptr && argptr[0])
1832 result = Curl_ssl_set_engine(data, argptr);
1835 case CURLOPT_SSLENGINE_DEFAULT:
1837 * flag to set engine as default.
1839 result = Curl_ssl_set_engine_default(data);
1843 * Kludgy option to enable CRLF conversions. Subject for removal.
1845 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1848 case CURLOPT_INTERFACE:
1850 * Set what interface or address/hostname to bind the socket to when
1851 * performing an operation and thus what from-IP your connection will use.
1853 result = setstropt(&data->set.str[STRING_DEVICE],
1854 va_arg(param, char *));
1856 case CURLOPT_LOCALPORT:
1858 * Set what local port to bind the socket to when performing an operation.
1860 data->set.localport = curlx_sltous(va_arg(param, long));
1862 case CURLOPT_LOCALPORTRANGE:
1864 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1866 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1868 case CURLOPT_KRBLEVEL:
1870 * A string that defines the kerberos security level.
1872 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1873 va_arg(param, char *));
1874 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1876 case CURLOPT_GSSAPI_DELEGATION:
1878 * GSSAPI credential delegation
1880 data->set.gssapi_delegation = va_arg(param, long);
1882 case CURLOPT_SSL_VERIFYPEER:
1884 * Enable peer SSL verifying.
1886 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1888 case CURLOPT_SSL_VERIFYHOST:
1890 * Enable verification of the host name in the peer certificate
1892 arg = va_arg(param, long);
1894 /* Obviously people are not reading documentation and too many thought
1895 this argument took a boolean when it wasn't and misused it. We thus ban
1896 1 as a sensible input and we warn about its use. Then we only have the
1897 2 action internally stored as TRUE. */
1900 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1901 return CURLE_BAD_FUNCTION_ARGUMENT;
1904 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1907 /* since these two options are only possible to use on an OpenSSL-
1908 powered libcurl we #ifdef them on this condition so that libcurls
1909 built against other SSL libs will return a proper error when trying
1910 to set this option! */
1911 case CURLOPT_SSL_CTX_FUNCTION:
1913 * Set a SSL_CTX callback
1915 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1917 case CURLOPT_SSL_CTX_DATA:
1919 * Set a SSL_CTX callback parameter pointer
1921 data->set.ssl.fsslctxp = va_arg(param, void *);
1924 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT)
1925 case CURLOPT_CERTINFO:
1926 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1929 case CURLOPT_CAINFO:
1931 * Set CA info for SSL connection. Specify file name of the CA certificate
1933 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1934 va_arg(param, char *));
1936 case CURLOPT_CAPATH:
1938 * Set CA path info for SSL connection. Specify directory name of the CA
1939 * certificates which have been prepared using openssl c_rehash utility.
1941 /* This does not work on windows. */
1942 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1943 va_arg(param, char *));
1945 case CURLOPT_CRLFILE:
1947 * Set CRL file info for SSL connection. Specify file name of the CRL
1948 * to check certificates revocation
1950 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1951 va_arg(param, char *));
1953 case CURLOPT_ISSUERCERT:
1955 * Set Issuer certificate file
1956 * to check certificates issuer
1958 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1959 va_arg(param, char *));
1961 case CURLOPT_TELNETOPTIONS:
1963 * Set a linked list of telnet options
1965 data->set.telnet_options = va_arg(param, struct curl_slist *);
1968 case CURLOPT_BUFFERSIZE:
1970 * The application kindly asks for a differently sized receive buffer.
1971 * If it seems reasonable, we'll use it.
1973 data->set.buffer_size = va_arg(param, long);
1975 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1976 (data->set.buffer_size < 1))
1977 data->set.buffer_size = 0; /* huge internal default */
1981 case CURLOPT_NOSIGNAL:
1983 * The application asks not to set any signal() or alarm() handlers,
1984 * even when using a timeout.
1986 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
1991 struct Curl_share *set;
1992 set = va_arg(param, struct Curl_share *);
1994 /* disconnect from old share, if any */
1996 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
1998 if(data->dns.hostcachetype == HCACHE_SHARED) {
1999 data->dns.hostcache = NULL;
2000 data->dns.hostcachetype = HCACHE_NONE;
2003 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2004 if(data->share->cookies == data->cookies)
2005 data->cookies = NULL;
2008 if(data->share->sslsession == data->state.session)
2009 data->state.session = NULL;
2011 data->share->dirty--;
2013 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2017 /* use new share if it set */
2021 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2023 data->share->dirty++;
2025 if(data->share->hostcache) {
2026 /* use shared host cache */
2027 data->dns.hostcache = data->share->hostcache;
2028 data->dns.hostcachetype = HCACHE_SHARED;
2030 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2031 if(data->share->cookies) {
2032 /* use shared cookie list, first free own one if any */
2034 Curl_cookie_cleanup(data->cookies);
2035 /* enable cookies since we now use a share that uses cookies! */
2036 data->cookies = data->share->cookies;
2038 #endif /* CURL_DISABLE_HTTP */
2039 if(data->share->sslsession) {
2040 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2041 data->state.session = data->share->sslsession;
2043 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2046 /* check for host cache not needed,
2047 * it will be done by curl_easy_perform */
2051 case CURLOPT_PRIVATE:
2053 * Set private data pointer.
2055 data->set.private_data = va_arg(param, void *);
2058 case CURLOPT_MAXFILESIZE:
2060 * Set the maximum size of a file to download.
2062 data->set.max_filesize = va_arg(param, long);
2066 case CURLOPT_USE_SSL:
2068 * Make transfers attempt to use SSL/TLS.
2070 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2073 case CURLOPT_SSL_OPTIONS:
2074 arg = va_arg(param, long);
2075 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2079 case CURLOPT_FTPSSLAUTH:
2081 * Set a specific auth for FTP-SSL transfers.
2083 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2086 case CURLOPT_IPRESOLVE:
2087 data->set.ipver = va_arg(param, long);
2090 case CURLOPT_MAXFILESIZE_LARGE:
2092 * Set the maximum size of a file to download.
2094 data->set.max_filesize = va_arg(param, curl_off_t);
2097 case CURLOPT_TCP_NODELAY:
2099 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2102 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2105 case CURLOPT_FTP_ACCOUNT:
2106 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2107 va_arg(param, char *));
2110 case CURLOPT_IGNORE_CONTENT_LENGTH:
2111 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2114 case CURLOPT_CONNECT_ONLY:
2116 * No data transfer, set up connection and let application use the socket
2118 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2121 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2122 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2123 va_arg(param, char *));
2126 case CURLOPT_SOCKOPTFUNCTION:
2128 * socket callback function: called after socket() but before connect()
2130 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2133 case CURLOPT_SOCKOPTDATA:
2135 * socket callback data pointer. Might be NULL.
2137 data->set.sockopt_client = va_arg(param, void *);
2140 case CURLOPT_OPENSOCKETFUNCTION:
2142 * open/create socket callback function: called instead of socket(),
2145 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2148 case CURLOPT_OPENSOCKETDATA:
2150 * socket callback data pointer. Might be NULL.
2152 data->set.opensocket_client = va_arg(param, void *);
2155 case CURLOPT_CLOSESOCKETFUNCTION:
2157 * close socket callback function: called instead of close()
2158 * when shutting down a connection
2160 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2163 case CURLOPT_CLOSESOCKETDATA:
2165 * socket callback data pointer. Might be NULL.
2167 data->set.closesocket_client = va_arg(param, void *);
2170 case CURLOPT_SSL_SESSIONID_CACHE:
2171 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2175 /* we only include SSH options if explicitly built to support SSH */
2176 case CURLOPT_SSH_AUTH_TYPES:
2177 data->set.ssh_auth_types = va_arg(param, long);
2180 case CURLOPT_SSH_PUBLIC_KEYFILE:
2182 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2184 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2185 va_arg(param, char *));
2188 case CURLOPT_SSH_PRIVATE_KEYFILE:
2190 * Use this file instead of the $HOME/.ssh/id_dsa file
2192 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2193 va_arg(param, char *));
2195 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2197 * Option to allow for the MD5 of the host public key to be checked
2198 * for validation purposes.
2200 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2201 va_arg(param, char *));
2203 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2204 case CURLOPT_SSH_KNOWNHOSTS:
2206 * Store the file name to read known hosts from.
2208 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2209 va_arg(param, char *));
2212 case CURLOPT_SSH_KEYFUNCTION:
2213 /* setting to NULL is fine since the ssh.c functions themselves will
2214 then rever to use the internal default */
2215 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2218 case CURLOPT_SSH_KEYDATA:
2220 * Custom client data to pass to the SSH keyfunc callback
2222 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2224 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2226 #endif /* USE_LIBSSH2 */
2228 case CURLOPT_HTTP_TRANSFER_DECODING:
2230 * disable libcurl transfer encoding is used
2232 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2235 case CURLOPT_HTTP_CONTENT_DECODING:
2237 * raw data passed to the application when content encoding is used
2239 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2242 case CURLOPT_NEW_FILE_PERMS:
2244 * Uses these permissions instead of 0644
2246 data->set.new_file_perms = va_arg(param, long);
2249 case CURLOPT_NEW_DIRECTORY_PERMS:
2251 * Uses these permissions instead of 0755
2253 data->set.new_directory_perms = va_arg(param, long);
2256 case CURLOPT_ADDRESS_SCOPE:
2258 * We always get longs when passed plain numericals, but for this value we
2259 * know that an unsigned int will always hold the value so we blindly
2260 * typecast to this type
2262 data->set.scope = curlx_sltoui(va_arg(param, long));
2265 case CURLOPT_PROTOCOLS:
2266 /* set the bitmask for the protocols that are allowed to be used for the
2267 transfer, which thus helps the app which takes URLs from users or other
2268 external inputs and want to restrict what protocol(s) to deal
2269 with. Defaults to CURLPROTO_ALL. */
2270 data->set.allowed_protocols = va_arg(param, long);
2273 case CURLOPT_REDIR_PROTOCOLS:
2274 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2275 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2276 to be set in both bitmasks to be allowed to get redirected to. Defaults
2277 to all protocols except FILE and SCP. */
2278 data->set.redir_protocols = va_arg(param, long);
2281 case CURLOPT_MAIL_FROM:
2282 /* Set the SMTP mail originator */
2283 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2284 va_arg(param, char *));
2287 case CURLOPT_MAIL_AUTH:
2288 /* Set the SMTP auth originator */
2289 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2290 va_arg(param, char *));
2293 case CURLOPT_MAIL_RCPT:
2294 /* Set the list of mail recipients */
2295 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2298 case CURLOPT_SASL_IR:
2299 /* Enable/disable SASL initial response */
2300 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2303 case CURLOPT_RTSP_REQUEST:
2306 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2307 * Would this be better if the RTSPREQ_* were just moved into here?
2309 long curl_rtspreq = va_arg(param, long);
2310 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2311 switch(curl_rtspreq) {
2312 case CURL_RTSPREQ_OPTIONS:
2313 rtspreq = RTSPREQ_OPTIONS;
2316 case CURL_RTSPREQ_DESCRIBE:
2317 rtspreq = RTSPREQ_DESCRIBE;
2320 case CURL_RTSPREQ_ANNOUNCE:
2321 rtspreq = RTSPREQ_ANNOUNCE;
2324 case CURL_RTSPREQ_SETUP:
2325 rtspreq = RTSPREQ_SETUP;
2328 case CURL_RTSPREQ_PLAY:
2329 rtspreq = RTSPREQ_PLAY;
2332 case CURL_RTSPREQ_PAUSE:
2333 rtspreq = RTSPREQ_PAUSE;
2336 case CURL_RTSPREQ_TEARDOWN:
2337 rtspreq = RTSPREQ_TEARDOWN;
2340 case CURL_RTSPREQ_GET_PARAMETER:
2341 rtspreq = RTSPREQ_GET_PARAMETER;
2344 case CURL_RTSPREQ_SET_PARAMETER:
2345 rtspreq = RTSPREQ_SET_PARAMETER;
2348 case CURL_RTSPREQ_RECORD:
2349 rtspreq = RTSPREQ_RECORD;
2352 case CURL_RTSPREQ_RECEIVE:
2353 rtspreq = RTSPREQ_RECEIVE;
2356 rtspreq = RTSPREQ_NONE;
2359 data->set.rtspreq = rtspreq;
2364 case CURLOPT_RTSP_SESSION_ID:
2366 * Set the RTSP Session ID manually. Useful if the application is
2367 * resuming a previously established RTSP session
2369 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2370 va_arg(param, char *));
2373 case CURLOPT_RTSP_STREAM_URI:
2375 * Set the Stream URI for the RTSP request. Unless the request is
2376 * for generic server options, the application will need to set this.
2378 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2379 va_arg(param, char *));
2382 case CURLOPT_RTSP_TRANSPORT:
2384 * The content of the Transport: header for the RTSP request
2386 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2387 va_arg(param, char *));
2390 case CURLOPT_RTSP_CLIENT_CSEQ:
2392 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2393 * application is resuming a previously broken connection. The CSEQ
2394 * will increment from this new number henceforth.
2396 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2399 case CURLOPT_RTSP_SERVER_CSEQ:
2400 /* Same as the above, but for server-initiated requests */
2401 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2404 case CURLOPT_INTERLEAVEDATA:
2405 data->set.rtp_out = va_arg(param, void *);
2407 case CURLOPT_INTERLEAVEFUNCTION:
2408 /* Set the user defined RTP write function */
2409 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2412 case CURLOPT_WILDCARDMATCH:
2413 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2415 case CURLOPT_CHUNK_BGN_FUNCTION:
2416 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2418 case CURLOPT_CHUNK_END_FUNCTION:
2419 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2421 case CURLOPT_FNMATCH_FUNCTION:
2422 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2424 case CURLOPT_CHUNK_DATA:
2425 data->wildcard.customptr = va_arg(param, void *);
2427 case CURLOPT_FNMATCH_DATA:
2428 data->set.fnmatch_data = va_arg(param, void *);
2431 case CURLOPT_TLSAUTH_USERNAME:
2432 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2433 va_arg(param, char *));
2434 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2435 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2437 case CURLOPT_TLSAUTH_PASSWORD:
2438 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2439 va_arg(param, char *));
2440 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2441 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2443 case CURLOPT_TLSAUTH_TYPE:
2444 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2445 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2447 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2450 case CURLOPT_DNS_SERVERS:
2451 result = Curl_set_dns_servers(data, va_arg(param, char *));
2454 case CURLOPT_TCP_KEEPALIVE:
2455 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2457 case CURLOPT_TCP_KEEPIDLE:
2458 data->set.tcp_keepidle = va_arg(param, long);
2460 case CURLOPT_TCP_KEEPINTVL:
2461 data->set.tcp_keepintvl = va_arg(param, long);
2465 /* unknown tag and its companion, just ignore: */
2466 result = CURLE_UNKNOWN_OPTION;
2473 static void conn_free(struct connectdata *conn)
2478 /* possible left-overs from the async name resolvers */
2479 Curl_resolver_cancel(conn);
2481 /* close the SSL stuff before we close any sockets since they will/may
2482 write to the sockets */
2483 Curl_ssl_close(conn, FIRSTSOCKET);
2484 Curl_ssl_close(conn, SECONDARYSOCKET);
2486 /* close possibly still open sockets */
2487 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2488 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2489 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2490 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2492 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2493 Curl_ntlm_wb_cleanup(conn);
2496 Curl_safefree(conn->user);
2497 Curl_safefree(conn->passwd);
2498 Curl_safefree(conn->xoauth2_bearer);
2499 Curl_safefree(conn->options);
2500 Curl_safefree(conn->proxyuser);
2501 Curl_safefree(conn->proxypasswd);
2502 Curl_safefree(conn->allocptr.proxyuserpwd);
2503 Curl_safefree(conn->allocptr.uagent);
2504 Curl_safefree(conn->allocptr.userpwd);
2505 Curl_safefree(conn->allocptr.accept_encoding);
2506 Curl_safefree(conn->allocptr.te);
2507 Curl_safefree(conn->allocptr.rangeline);
2508 Curl_safefree(conn->allocptr.ref);
2509 Curl_safefree(conn->allocptr.host);
2510 Curl_safefree(conn->allocptr.cookiehost);
2511 Curl_safefree(conn->allocptr.rtsp_transport);
2512 Curl_safefree(conn->trailer);
2513 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2514 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2515 Curl_safefree(conn->master_buffer);
2517 Curl_llist_destroy(conn->send_pipe, NULL);
2518 Curl_llist_destroy(conn->recv_pipe, NULL);
2520 conn->send_pipe = NULL;
2521 conn->recv_pipe = NULL;
2523 Curl_safefree(conn->localdev);
2524 Curl_free_ssl_config(&conn->ssl_config);
2526 free(conn); /* free all the connection oriented data */
2529 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2531 struct SessionHandle *data;
2533 return CURLE_OK; /* this is closed and fine already */
2537 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2541 if(conn->dns_entry != NULL) {
2542 Curl_resolv_unlock(data, conn->dns_entry);
2543 conn->dns_entry = NULL;
2546 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2549 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2550 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2552 /* Authentication data is a mix of connection-related and sessionhandle-
2553 related stuff. NTLM is connection-related so when we close the shop
2557 data->state.authhost.done = FALSE;
2558 data->state.authhost.picked =
2559 data->state.authhost.want;
2562 if(has_proxy_ntlm) {
2563 data->state.authproxy.done = FALSE;
2564 data->state.authproxy.picked =
2565 data->state.authproxy.want;
2568 if(has_host_ntlm || has_proxy_ntlm)
2569 data->state.authproblem = FALSE;
2572 /* Cleanup NTLM connection-related data */
2573 Curl_http_ntlm_cleanup(conn);
2575 /* Cleanup possible redirect junk */
2576 if(data->req.newurl) {
2577 free(data->req.newurl);
2578 data->req.newurl = NULL;
2581 if(conn->handler->disconnect)
2582 /* This is set if protocol-specific cleanups should be made */
2583 conn->handler->disconnect(conn, dead_connection);
2585 /* unlink ourselves! */
2586 infof(data, "Closing connection %ld\n", conn->connection_id);
2587 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2589 #if defined(USE_LIBIDN)
2590 if(conn->host.encalloc)
2591 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2592 with idn_free() since this was allocated
2594 if(conn->proxy.encalloc)
2595 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2596 freed with idn_free() since this was
2597 allocated by libidn */
2598 #elif defined(USE_WIN32_IDN)
2599 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2600 idn_free() since this was allocated by
2601 curl_win32_idn_to_ascii */
2602 if(conn->proxy.encalloc)
2603 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2604 with idn_free() since this was allocated by
2605 curl_win32_idn_to_ascii */
2608 Curl_ssl_close(conn, FIRSTSOCKET);
2610 /* Indicate to all handles on the pipe that we're dead */
2611 if(Curl_multi_pipeline_enabled(data->multi)) {
2612 signalPipeClose(conn->send_pipe, TRUE);
2613 signalPipeClose(conn->recv_pipe, TRUE);
2618 Curl_speedinit(data);
2624 * This function should return TRUE if the socket is to be assumed to
2625 * be dead. Most commonly this happens when the server has closed the
2626 * connection due to inactivity.
2628 static bool SocketIsDead(curl_socket_t sock)
2631 bool ret_val = TRUE;
2633 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2641 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2642 const struct connectdata *conn)
2644 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2645 Curl_multi_pipeline_enabled(handle->multi) &&
2646 (handle->set.httpreq == HTTPREQ_GET ||
2647 handle->set.httpreq == HTTPREQ_HEAD) &&
2648 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2654 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2656 return Curl_multi_pipeline_enabled(handle->multi);
2659 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2660 struct curl_llist *pipeline)
2662 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2663 return CURLE_OUT_OF_MEMORY;
2664 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2668 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2669 struct curl_llist *pipeline)
2671 struct curl_llist_element *curr;
2673 curr = pipeline->head;
2675 if(curr->ptr == handle) {
2676 Curl_llist_remove(pipeline, curr, NULL);
2677 return 1; /* we removed a handle */
2685 #if 0 /* this code is saved here as it is useful for debugging purposes */
2686 static void Curl_printPipeline(struct curl_llist *pipeline)
2688 struct curl_llist_element *curr;
2690 curr = pipeline->head;
2692 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2693 infof(data, "Handle in pipeline: %s\n", data->state.path);
2699 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2701 struct curl_llist_element *curr = pipeline->head;
2703 return (struct SessionHandle *) curr->ptr;
2709 /* remove the specified connection from all (possible) pipelines and related
2711 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2712 struct connectdata *conn)
2714 bool recv_head = (conn->readchannel_inuse &&
2715 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2717 bool send_head = (conn->writechannel_inuse &&
2718 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2720 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2721 conn->readchannel_inuse = FALSE;
2722 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2723 conn->writechannel_inuse = FALSE;
2726 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2728 struct curl_llist_element *curr;
2733 curr = pipeline->head;
2735 struct curl_llist_element *next = curr->next;
2736 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2738 #ifdef DEBUGBUILD /* debug-only code */
2739 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2741 infof(data, "signalPipeClose() found BAAD easy handle\n");
2746 data->state.pipe_broke = TRUE;
2747 Curl_multi_handlePipeBreak(data);
2748 Curl_llist_remove(pipeline, curr, NULL);
2754 * This function finds the connection in the connection
2755 * cache that has been unused for the longest time.
2757 * Returns the pointer to the oldest idle connection, or NULL if none was
2760 static struct connectdata *
2761 find_oldest_idle_connection(struct SessionHandle *data)
2763 struct conncache *bc = data->state.conn_cache;
2764 struct curl_hash_iterator iter;
2765 struct curl_llist_element *curr;
2766 struct curl_hash_element *he;
2770 struct connectdata *conn_candidate = NULL;
2771 struct connectbundle *bundle;
2775 Curl_hash_start_iterate(bc->hash, &iter);
2777 he = Curl_hash_next_element(&iter);
2779 struct connectdata *conn;
2783 curr = bundle->conn_list->head;
2788 /* Set higher score for the age passed since the connection was used */
2789 score = Curl_tvdiff(now, conn->now);
2791 if(score > highscore) {
2793 conn_candidate = conn;
2799 he = Curl_hash_next_element(&iter);
2802 return conn_candidate;
2806 * This function finds the connection in the connection
2807 * bundle that has been unused for the longest time.
2809 * Returns the pointer to the oldest idle connection, or NULL if none was
2812 static struct connectdata *
2813 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2814 struct connectbundle *bundle)
2816 struct curl_llist_element *curr;
2820 struct connectdata *conn_candidate = NULL;
2821 struct connectdata *conn;
2827 curr = bundle->conn_list->head;
2832 /* Set higher score for the age passed since the connection was used */
2833 score = Curl_tvdiff(now, conn->now);
2835 if(score > highscore) {
2837 conn_candidate = conn;
2843 return conn_candidate;
2847 * Given one filled in connection struct (named needle), this function should
2848 * detect if there already is one that has all the significant details
2849 * exactly the same and thus should be used instead.
2851 * If there is a match, this function returns TRUE - and has marked the
2852 * connection as 'in-use'. It must later be called with ConnectionDone() to
2853 * return back to 'idle' (unused) state.
2855 * The force_reuse flag is set if the connection must be used, even if
2856 * the pipelining strategy wants to open a new connection instead of reusing.
2859 ConnectionExists(struct SessionHandle *data,
2860 struct connectdata *needle,
2861 struct connectdata **usethis,
2864 struct connectdata *check;
2865 struct connectdata *chosen = 0;
2866 bool canPipeline = IsPipeliningPossible(data, needle);
2867 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2868 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2869 struct connectbundle *bundle;
2871 *force_reuse = FALSE;
2873 /* We can't pipe if the site is blacklisted */
2874 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2875 canPipeline = FALSE;
2878 /* Look up the bundle with all the connections to this
2880 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2883 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2884 size_t best_pipe_len = max_pipe_len;
2885 struct curl_llist_element *curr;
2887 infof(data, "Found bundle for host %s: %p\n",
2888 needle->host.name, (void *)bundle);
2890 /* We can't pipe if we don't know anything about the server */
2891 if(canPipeline && !bundle->server_supports_pipelining) {
2892 infof(data, "Server doesn't support pipelining\n");
2893 canPipeline = FALSE;
2896 curr = bundle->conn_list->head;
2899 bool credentialsMatch = FALSE;
2903 * Note that if we use a HTTP proxy, we check connections to that
2904 * proxy and not to the actual remote server.
2909 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2911 if(!pipeLen && !check->inuse) {
2912 /* The check for a dead socket makes sense only if there are no
2913 handles in pipeline and the connection isn't already marked in
2916 if(check->handler->protocol & CURLPROTO_RTSP)
2917 /* RTSP is a special case due to RTP interleaving */
2918 dead = Curl_rtsp_connisdead(check);
2920 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2924 infof(data, "Connection %ld seems to be dead!\n",
2925 check->connection_id);
2927 /* disconnect resources */
2928 Curl_disconnect(check, /* dead_connection */ TRUE);
2934 /* Make sure the pipe has only GET requests */
2935 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2936 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2938 if(!IsPipeliningPossible(sh, check))
2942 if(!IsPipeliningPossible(rh, check))
2948 /* can only happen within multi handles, and means that another easy
2949 handle is using this connection */
2953 if(Curl_resolver_asynch()) {
2954 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2955 completed yet and until then we don't re-use this connection */
2956 if(!check->ip_addr_str[0]) {
2958 "Connection #%ld is still name resolving, can't reuse\n",
2959 check->connection_id);
2964 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2965 check->bits.close) {
2966 /* Don't pick a connection that hasn't connected yet or that is going
2968 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2969 check->connection_id);
2971 if(check->recv_pipe->size > 0) {
2973 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2974 check->connection_id);
2981 if((needle->handler->flags&PROTOPT_SSL) !=
2982 (check->handler->flags&PROTOPT_SSL))
2983 /* don't do mixed SSL and non-SSL connections */
2984 if(!(needle->handler->protocol & check->handler->protocol))
2985 /* except protocols that have been upgraded via TLS */
2988 if(needle->handler->flags&PROTOPT_SSL) {
2989 if((data->set.ssl.verifypeer != check->verifypeer) ||
2990 (data->set.ssl.verifyhost != check->verifyhost))
2994 if(needle->bits.proxy != check->bits.proxy)
2995 /* don't do mixed proxy and non-proxy connections */
2998 if(!canPipeline && check->inuse)
2999 /* this request can't be pipelined but the checked connection is
3000 already in use so we skip it */
3003 if(needle->localdev || needle->localport) {
3004 /* If we are bound to a specific local end (IP+port), we must not
3005 re-use a random other one, although if we didn't ask for a
3006 particular one we can reuse one that was bound.
3008 This comparison is a bit rough and too strict. Since the input
3009 parameters can be specified in numerous ways and still end up the
3010 same it would take a lot of processing to make it really accurate.
3011 Instead, this matching will assume that re-uses of bound connections
3012 will most likely also re-use the exact same binding parameters and
3013 missing out a few edge cases shouldn't hurt anyone very much.
3015 if((check->localport != needle->localport) ||
3016 (check->localportrange != needle->localportrange) ||
3018 !needle->localdev ||
3019 strcmp(check->localdev, needle->localdev))
3023 if((needle->handler->protocol & CURLPROTO_FTP) ||
3024 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3025 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3026 and password as well */
3027 if(!strequal(needle->user, check->user) ||
3028 !strequal(needle->passwd, check->passwd)) {
3029 /* one of them was different */
3032 credentialsMatch = TRUE;
3035 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3036 (needle->bits.httpproxy && check->bits.httpproxy &&
3037 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3038 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3039 (needle->port == check->port))) {
3040 /* The requested connection does not use a HTTP proxy or it uses SSL or
3041 it is a non-SSL protocol tunneled over the same http proxy name and
3042 port number or it is a non-SSL protocol which is allowed to be
3045 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3046 needle->handler->protocol & check->handler->protocol) &&
3047 Curl_raw_equal(needle->host.name, check->host.name) &&
3048 needle->remote_port == check->remote_port) {
3049 if(needle->handler->flags & PROTOPT_SSL) {
3050 /* This is a SSL connection so verify that we're using the same
3051 SSL options as well */
3052 if(!Curl_ssl_config_matches(&needle->ssl_config,
3053 &check->ssl_config)) {
3055 "Connection #%ld has different SSL parameters, "
3057 check->connection_id));
3060 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3062 "Connection #%ld has not started SSL connect, "
3064 check->connection_id));
3071 else { /* The requested needle connection is using a proxy,
3072 is the checked one using the same host, port and type? */
3073 if(check->bits.proxy &&
3074 (needle->proxytype == check->proxytype) &&
3075 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3076 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3077 needle->port == check->port) {
3078 /* This is the same proxy connection, use it! */
3084 /* If we are looking for an NTLM connection, check if this is already
3085 authenticating with the right credentials. If not, keep looking so
3086 that we can reuse NTLM connections if possible. (Especially we
3087 must not reuse the same connection if partway through
3090 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3093 /* We must use this connection, no other */
3094 *force_reuse = TRUE;
3102 /* We can pipeline if we want to. Let's continue looking for
3103 the optimal connection to use, i.e the shortest pipe that is not
3107 /* We have the optimal connection. Let's stop looking. */
3112 /* We can't use the connection if the pipe is full */
3113 if(pipeLen >= max_pipe_len)
3116 /* We can't use the connection if the pipe is penalized */
3117 if(Curl_pipeline_penalized(data, check))
3120 if(pipeLen < best_pipe_len) {
3121 /* This connection has a shorter pipe so far. We'll pick this
3122 and continue searching */
3124 best_pipe_len = pipeLen;
3129 /* We have found a connection. Let's stop searching. */
3139 return TRUE; /* yes, we found one to use! */
3142 return FALSE; /* no matching connecting exists */
3145 /* Mark the connection as 'idle', or close it if the cache is full.
3146 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3148 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3150 /* data->multi->maxconnects can be negative, deal with it. */
3151 size_t maxconnects =
3152 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3153 struct connectdata *conn_candidate = NULL;
3155 /* Mark the current connection as 'unused' */
3156 conn->inuse = FALSE;
3158 if(maxconnects > 0 &&
3159 data->state.conn_cache->num_connections > maxconnects) {
3160 infof(data, "Connection cache is full, closing the oldest one.\n");
3162 conn_candidate = find_oldest_idle_connection(data);
3164 if(conn_candidate) {
3165 /* Set the connection's owner correctly */
3166 conn_candidate->data = data;
3168 /* the winner gets the honour of being disconnected */
3169 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3173 return (conn_candidate == conn) ? FALSE : TRUE;
3177 * The given input connection struct pointer is to be stored in the connection
3178 * cache. If the cache is already full, least interesting existing connection
3179 * (if any) gets closed.
3181 * The given connection should be unique. That must've been checked prior to
3184 static CURLcode ConnectionStore(struct SessionHandle *data,
3185 struct connectdata *conn)
3187 static int connection_id_counter = 0;
3191 /* Assign a number to the connection for easier tracking in the log
3193 conn->connection_id = connection_id_counter++;
3195 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3196 if(result != CURLE_OK)
3197 conn->connection_id = -1;
3202 /* after a TCP connection to the proxy has been verified, this function does
3203 the next magic step.
3205 Note: this function's sub-functions call failf()
3208 CURLcode Curl_connected_proxy(struct connectdata *conn)
3210 if(!conn->bits.proxy)
3213 switch(conn->proxytype) {
3214 #ifndef CURL_DISABLE_PROXY
3215 case CURLPROXY_SOCKS5:
3216 case CURLPROXY_SOCKS5_HOSTNAME:
3217 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3218 conn->host.name, conn->remote_port,
3221 case CURLPROXY_SOCKS4:
3222 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3223 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3225 case CURLPROXY_SOCKS4A:
3226 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3227 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3229 #endif /* CURL_DISABLE_PROXY */
3230 case CURLPROXY_HTTP:
3231 case CURLPROXY_HTTP_1_0:
3232 /* do nothing here. handled later. */
3236 } /* switch proxytype */
3241 static CURLcode ConnectPlease(struct SessionHandle *data,
3242 struct connectdata *conn,
3246 Curl_addrinfo *addr;
3247 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3248 char *hostname = conn->bits.proxy?conn->proxy.name:conn->host.name;
3250 infof(data, "About to connect() to %s%s port %ld (#%ld)\n",
3251 conn->bits.proxy?"proxy ":"",
3252 hostname, conn->port, conn->connection_id);
3257 /*************************************************************
3258 * Connect to server/proxy
3259 *************************************************************/
3260 result= Curl_connecthost(conn,
3262 &conn->sock[FIRSTSOCKET],
3265 if(CURLE_OK == result) {
3266 /* All is cool, we store the current information */
3267 conn->ip_addr = addr;
3270 result = Curl_connected_proxy(conn);
3272 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
3273 Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
3279 *connected = FALSE; /* mark it as not connected */
3285 * verboseconnect() displays verbose information after a connect
3287 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3288 void Curl_verboseconnect(struct connectdata *conn)
3290 if(conn->data->set.verbose)
3291 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3292 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3293 conn->ip_addr_str, conn->port, conn->connection_id);
3297 int Curl_protocol_getsock(struct connectdata *conn,
3298 curl_socket_t *socks,
3301 if(conn->handler->proto_getsock)
3302 return conn->handler->proto_getsock(conn, socks, numsocks);
3303 return GETSOCK_BLANK;
3306 int Curl_doing_getsock(struct connectdata *conn,
3307 curl_socket_t *socks,
3310 if(conn && conn->handler->doing_getsock)
3311 return conn->handler->doing_getsock(conn, socks, numsocks);
3312 return GETSOCK_BLANK;
3316 * We are doing protocol-specific connecting and this is being called over and
3317 * over from the multi interface until the connection phase is done on
3321 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3324 CURLcode result=CURLE_OK;
3326 if(conn && conn->handler->connecting) {
3328 result = conn->handler->connecting(conn, done);
3337 * We are DOING this is being called over and over from the multi interface
3338 * until the DOING phase is done on protocol layer.
3341 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3343 CURLcode result=CURLE_OK;
3345 if(conn && conn->handler->doing) {
3347 result = conn->handler->doing(conn, done);
3356 * We have discovered that the TCP connection has been successful, we can now
3357 * proceed with some action.
3360 CURLcode Curl_protocol_connect(struct connectdata *conn,
3361 bool *protocol_done)
3363 CURLcode result=CURLE_OK;
3365 *protocol_done = FALSE;
3367 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3368 /* We already are connected, get back. This may happen when the connect
3369 worked fine in the first call, like when we connect to a local server
3370 or proxy. Note that we don't know if the protocol is actually done.
3372 Unless this protocol doesn't have any protocol-connect callback, as
3373 then we know we're done. */
3374 if(!conn->handler->connecting)
3375 *protocol_done = TRUE;
3380 if(!conn->bits.protoconnstart) {
3382 result = Curl_proxy_connect(conn);
3386 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3387 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3388 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3389 before proceeding further. Return CURLE_OK so we'll be called again */
3392 if(conn->handler->connect_it) {
3393 /* is there a protocol-specific connect() procedure? */
3395 /* Call the protocol-specific connect function */
3396 result = conn->handler->connect_it(conn, protocol_done);
3399 *protocol_done = TRUE;
3401 /* it has started, possibly even completed but that knowledge isn't stored
3404 conn->bits.protoconnstart = TRUE;
3407 return result; /* pass back status */
3411 * Helpers for IDNA convertions.
3413 static bool is_ASCII_name(const char *hostname)
3415 const unsigned char *ch = (const unsigned char*)hostname;
3426 * Check if characters in hostname is allowed in Top Level Domain.
3428 static bool tld_check_name(struct SessionHandle *data,
3429 const char *ace_hostname)
3432 char *uc_name = NULL;
3434 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3435 const char *tld_errmsg = "<no msg>";
3440 /* Convert (and downcase) ACE-name back into locale's character set */
3441 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3442 if(rc != IDNA_SUCCESS)
3445 rc = tld_check_lz(uc_name, &err_pos, NULL);
3446 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3447 #ifdef HAVE_TLD_STRERROR
3448 if(rc != TLD_SUCCESS)
3449 tld_errmsg = tld_strerror((Tld_rc)rc);
3451 if(rc == TLD_INVALID)
3452 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3453 tld_errmsg, err_pos, uc_name[err_pos],
3454 uc_name[err_pos] & 255);
3455 else if(rc != TLD_SUCCESS)
3456 infof(data, "WARNING: TLD check for %s failed; %s\n",
3457 uc_name, tld_errmsg);
3458 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3461 if(rc != TLD_SUCCESS)
3469 * Perform any necessary IDN conversion of hostname
3471 static void fix_hostname(struct SessionHandle *data,
3472 struct connectdata *conn, struct hostname *host)
3477 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3481 /* set the name we use to display the host name */
3482 host->dispname = host->name;
3483 if(!is_ASCII_name(host->name)) {
3485 /*************************************************************
3486 * Check name for non-ASCII and convert hostname to ACE form.
3487 *************************************************************/
3488 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3489 char *ace_hostname = NULL;
3490 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3491 infof (data, "Input domain encoded as `%s'\n",
3492 stringprep_locale_charset ());
3493 if(rc != IDNA_SUCCESS)
3494 infof(data, "Failed to convert %s to ACE; %s\n",
3495 host->name, Curl_idn_strerror(conn,rc));
3497 /* tld_check_name() displays a warning if the host name contains
3498 "illegal" characters for this TLD */
3499 (void)tld_check_name(data, ace_hostname);
3501 host->encalloc = ace_hostname;
3502 /* change the name pointer to point to the encoded hostname */
3503 host->name = host->encalloc;
3506 #elif defined(USE_WIN32_IDN)
3507 /*************************************************************
3508 * Check name for non-ASCII and convert hostname to ACE form.
3509 *************************************************************/
3510 char *ace_hostname = NULL;
3511 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3513 infof(data, "Failed to convert %s to ACE;\n",
3516 host->encalloc = ace_hostname;
3517 /* change the name pointer to point to the encoded hostname */
3518 host->name = host->encalloc;
3521 infof(data, "IDN support not present, can't parse Unicode domains\n");
3526 static void llist_dtor(void *user, void *element)
3534 * Allocate and initialize a new connectdata object.
3536 static struct connectdata *allocate_conn(struct SessionHandle *data)
3538 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3542 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3543 already from start to avoid NULL
3544 situations and checks */
3546 /* and we setup a few fields in case we end up actually using this struct */
3548 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3549 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3550 conn->connection_id = -1; /* no ID */
3551 conn->port = -1; /* unknown at this point */
3553 /* Default protocol-independent behavior doesn't support persistent
3554 connections, so we set this to force-close. Protocols that support
3555 this need to set this to FALSE in their "curl_do" functions. */
3556 conn->bits.close = TRUE;
3558 /* Store creation time to help future close decision making */
3559 conn->created = Curl_tvnow();
3561 conn->data = data; /* Setup the association between this connection
3562 and the SessionHandle */
3564 conn->proxytype = data->set.proxytype; /* type */
3566 #ifdef CURL_DISABLE_PROXY
3568 conn->bits.proxy = FALSE;
3569 conn->bits.httpproxy = FALSE;
3570 conn->bits.proxy_user_passwd = FALSE;
3571 conn->bits.tunnel_proxy = FALSE;
3573 #else /* CURL_DISABLE_PROXY */
3575 /* note that these two proxy bits are now just on what looks to be
3576 requested, they may be altered down the road */
3577 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3578 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3579 conn->bits.httpproxy = (conn->bits.proxy &&
3580 (conn->proxytype == CURLPROXY_HTTP ||
3581 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3582 conn->bits.proxy_user_passwd =
3583 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3584 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3586 #endif /* CURL_DISABLE_PROXY */
3588 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3589 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3590 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3592 conn->verifypeer = data->set.ssl.verifypeer;
3593 conn->verifyhost = data->set.ssl.verifyhost;
3595 conn->ip_version = data->set.ipver;
3597 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3598 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3599 conn->ntlm_auth_hlpr_pid = 0;
3600 conn->challenge_header = NULL;
3601 conn->response_header = NULL;
3604 if(Curl_multi_pipeline_enabled(data->multi) &&
3605 !conn->master_buffer) {
3606 /* Allocate master_buffer to be used for pipelining */
3607 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3608 if(!conn->master_buffer)
3612 /* Initialize the pipeline lists */
3613 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3614 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3615 if(!conn->send_pipe || !conn->recv_pipe)
3619 conn->data_prot = PROT_CLEAR;
3622 /* Store the local bind parameters that will be used for this connection */
3623 if(data->set.str[STRING_DEVICE]) {
3624 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3628 conn->localportrange = data->set.localportrange;
3629 conn->localport = data->set.localport;
3631 /* the close socket stuff needs to be copied to the connection struct as
3632 it may live on without (this specific) SessionHandle */
3633 conn->fclosesocket = data->set.fclosesocket;
3634 conn->closesocket_client = data->set.closesocket_client;
3639 Curl_llist_destroy(conn->send_pipe, NULL);
3640 Curl_llist_destroy(conn->recv_pipe, NULL);
3642 conn->send_pipe = NULL;
3643 conn->recv_pipe = NULL;
3645 Curl_safefree(conn->master_buffer);
3646 Curl_safefree(conn->localdev);
3647 Curl_safefree(conn);
3651 static CURLcode findprotocol(struct SessionHandle *data,
3652 struct connectdata *conn,
3653 const char *protostr)
3655 const struct Curl_handler * const *pp;
3656 const struct Curl_handler *p;
3658 /* Scan protocol handler table and match against 'protostr' to set a few
3659 variables based on the URL. Now that the handler may be changed later
3660 when the protocol specific setup function is called. */
3661 for(pp = protocols; (p = *pp) != NULL; pp++) {
3662 if(Curl_raw_equal(p->scheme, protostr)) {
3663 /* Protocol found in table. Check if allowed */
3664 if(!(data->set.allowed_protocols & p->protocol))
3668 /* it is allowed for "normal" request, now do an extra check if this is
3669 the result of a redirect */
3670 if(data->state.this_is_a_follow &&
3671 !(data->set.redir_protocols & p->protocol))
3675 /* Perform setup complement if some. */
3676 conn->handler = conn->given = p;
3678 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3684 /* The protocol was not found in the table, but we don't have to assign it
3685 to anything since it is already assigned to a dummy-struct in the
3686 create_conn() function when the connectdata struct is allocated. */
3687 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3690 return CURLE_UNSUPPORTED_PROTOCOL;
3694 * Parse URL and fill in the relevant members of the connection struct.
3696 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3697 struct connectdata *conn,
3699 char **userp, char **passwdp,
3704 char *path = data->state.path;
3710 bool rebuild_url = FALSE;
3712 *prot_missing = FALSE;
3714 /*************************************************************
3717 * We need to parse the url even when using the proxy, because we will need
3718 * the hostname and port in case we are trying to SSL connect through the
3719 * proxy -- and we don't know if we will need to use SSL until we parse the
3721 ************************************************************/
3722 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3724 Curl_raw_equal(protobuf, "file")) {
3725 if(path[0] == '/' && path[1] == '/') {
3726 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3727 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3728 * file://localhost/<path> is similar to how other schemes treat missing
3729 * hostnames. See RFC 1808. */
3731 /* This cannot be done with strcpy() in a portable manner, since the
3732 memory areas overlap! */
3733 memmove(path, path + 2, strlen(path + 2)+1);
3736 * we deal with file://<host>/<path> differently since it supports no
3737 * hostname other than "localhost" and "127.0.0.1", which is unique among
3738 * the URL protocols specified in RFC 1738
3740 if(path[0] != '/') {
3741 /* the URL included a host name, we ignore host names in file:// URLs
3742 as the standards don't define what to do with them */
3743 char *ptr=strchr(path, '/');
3745 /* there was a slash present
3747 RFC1738 (section 3.1, page 5) says:
3749 The rest of the locator consists of data specific to the scheme,
3750 and is known as the "url-path". It supplies the details of how the
3751 specified resource can be accessed. Note that the "/" between the
3752 host (or port) and the url-path is NOT part of the url-path.
3754 As most agents use file://localhost/foo to get '/foo' although the
3755 slash preceding foo is a separator and not a slash for the path,
3756 a URL as file://localhost//foo must be valid as well, to refer to
3757 the same file with an absolute path.
3760 if(ptr[1] && ('/' == ptr[1]))
3761 /* if there was two slashes, we skip the first one as that is then
3762 used truly as a separator */
3765 /* This cannot be made with strcpy, as the memory chunks overlap! */
3766 memmove(path, ptr, strlen(ptr)+1);
3770 protop = "file"; /* protocol string */
3776 if(2 > sscanf(data->change.url,
3777 "%15[^\n:]://%[^\n/?]%[^\n]",
3779 conn->host.name, path)) {
3782 * The URL was badly formatted, let's try the browser-style _without_
3783 * protocol specified like 'http://'.
3785 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3788 * We couldn't even get this format.
3789 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3790 * assigned, but the return value is EOF!
3792 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3793 if(!(rc == -1 && *conn->host.name))
3796 failf(data, "<url> malformed");
3797 return CURLE_URL_MALFORMAT;
3802 * Since there was no protocol part specified, we guess what protocol it
3803 * is based on the first letters of the server name.
3806 /* Note: if you add a new protocol, please update the list in
3807 * lib/version.c too! */
3809 if(checkprefix("FTP.", conn->host.name))
3811 else if(checkprefix("DICT.", conn->host.name))
3813 else if(checkprefix("LDAP.", conn->host.name))
3815 else if(checkprefix("IMAP.", conn->host.name))
3817 else if(checkprefix("SMTP.", conn->host.name))
3819 else if(checkprefix("POP3.", conn->host.name))
3825 *prot_missing = TRUE; /* not given in URL */
3831 /* We search for '?' in the host name (but only on the right side of a
3832 * @-letter to allow ?-letters in username and password) to handle things
3833 * like http://example.com?param= (notice the missing '/').
3835 at = strchr(conn->host.name, '@');
3837 query = strchr(at+1, '?');
3839 query = strchr(conn->host.name, '?');
3842 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3843 a slash after the '?', that is where the path currently begins and the
3844 '?string' is still part of the host name.
3846 We must move the trailing part from the host name and put it first in
3847 the path. And have it all prefixed with a slash.
3850 size_t hostlen = strlen(query);
3851 size_t pathlen = strlen(path);
3853 /* move the existing path plus the zero byte forward, to make room for
3854 the host-name part */
3855 memmove(path+hostlen+1, path, pathlen+1);
3857 /* now copy the trailing host part in front of the existing path */
3858 memcpy(path+1, query, hostlen);
3860 path[0]='/'; /* prepend the missing slash */
3863 *query=0; /* now cut off the hostname at the ? */
3866 /* if there's no path set, use a single slash */
3871 /* If the URL is malformatted (missing a '/' after hostname before path) we
3872 * insert a slash here. The only letter except '/' we accept to start a path
3875 if(path[0] == '?') {
3876 /* We need this function to deal with overlapping memory areas. We know
3877 that the memory area 'path' points to is 'urllen' bytes big and that
3878 is bigger than the path. Use +1 to move the zero byte too. */
3879 memmove(&path[1], path, strlen(path)+1);
3884 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3885 char *newp = Curl_dedotdotify(path);
3887 return CURLE_OUT_OF_MEMORY;
3889 if(strcmp(newp, path)) {
3891 free(data->state.pathbuffer);
3892 data->state.pathbuffer = newp;
3893 data->state.path = newp;
3901 * "rebuild_url" means that one or more URL components have been modified so
3902 * we need to generate an updated full version. We need the corrected URL
3903 * when communicating over HTTP proxy and we don't know at this point if
3904 * we're using a proxy or not.
3909 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3911 size_t urllen = strlen(data->change.url); /* original URL length */
3913 size_t prefixlen = strlen(conn->host.name);
3916 prefixlen += strlen(protop) + strlen("://");
3918 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3920 return CURLE_OUT_OF_MEMORY;
3922 /* copy the prefix */
3923 memcpy(reurl, data->change.url, prefixlen);
3925 /* append the trailing piece + zerobyte */
3926 memcpy(&reurl[prefixlen], path, plen + 1);
3928 /* possible free the old one */
3929 if(data->change.url_alloc) {
3930 Curl_safefree(data->change.url);
3931 data->change.url_alloc = FALSE;
3934 infof(data, "Rebuilt URL to: %s\n", reurl);
3936 data->change.url = reurl;
3937 data->change.url_alloc = TRUE; /* free this later */
3941 * Parse the login details from the URL and strip them out of
3944 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3945 if(result != CURLE_OK)
3948 if(conn->host.name[0] == '[') {
3949 /* This looks like an IPv6 address literal. See if there is an address
3951 char *percent = strstr (conn->host.name, "%25");
3954 unsigned long scope = strtoul (percent + 3, &endp, 10);
3956 /* The address scope was well formed. Knock it out of the
3958 memmove(percent, endp, strlen(endp)+1);
3959 if(!data->state.this_is_a_follow)
3960 /* Don't honour a scope given in a Location: header */
3961 conn->scope = (unsigned int)scope;
3964 infof(data, "Invalid IPv6 address format\n");
3969 /* Override any scope that was set above. */
3970 conn->scope = data->set.scope;
3972 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3973 last part of the URI. We are looking for the first '#' so that we deal
3974 gracefully with non conformant URI such as http://example.com#foo#bar. */
3975 fragment = strchr(path, '#');
3979 /* we know the path part ended with a fragment, so we know the full URL
3980 string does too and we need to cut it off from there so it isn't used
3982 fragment = strchr(data->change.url, '#');
3988 * So if the URL was A://B/C#D,
3990 * conn->host.name is B
3991 * data->state.path is /C
3994 return findprotocol(data, conn, protop);
3998 * If we're doing a resumed transfer, we need to setup our stuff
4001 static CURLcode setup_range(struct SessionHandle *data)
4003 struct UrlState *s = &data->state;
4004 s->resume_from = data->set.set_resume_from;
4005 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4006 if(s->rangestringalloc)
4010 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
4012 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4014 s->rangestringalloc = (s->range)?TRUE:FALSE;
4017 return CURLE_OUT_OF_MEMORY;
4019 /* tell ourselves to fetch this range */
4020 s->use_range = TRUE; /* enable range download */
4023 s->use_range = FALSE; /* disable range download */
4030 * setup_connection_internals() -
4032 * Setup connection internals specific to the requested protocol in the
4033 * SessionHandle. This is inited and setup before the connection is made but
4034 * is about the particular protocol that is to be used.
4036 * This MUST get called after proxy magic has been figured out.
4038 static CURLcode setup_connection_internals(struct connectdata *conn)
4040 const struct Curl_handler * p;
4043 /* in some case in the multi state-machine, we go back to the CONNECT state
4044 and then a second (or third or...) call to this function will be made
4045 without doing a DISCONNECT or DONE in between (since the connection is
4046 yet in place) and therefore this function needs to first make sure
4047 there's no lingering previous data allocated. */
4048 Curl_free_request_state(conn->data);
4050 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4051 conn->data->req.maxdownload = -1;
4053 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4055 /* Perform setup complement if some. */
4058 if(p->setup_connection) {
4059 result = (*p->setup_connection)(conn);
4061 if(result != CURLE_OK)
4064 p = conn->handler; /* May have changed. */
4068 /* we check for -1 here since if proxy was detected already, this
4069 was very likely already set to the proxy port */
4070 conn->port = p->defport;
4072 /* only if remote_port was not already parsed off the URL we use the
4073 default port number */
4074 if(!conn->remote_port)
4075 conn->remote_port = (unsigned short)conn->given->defport;
4081 * Curl_free_request_state() should free temp data that was allocated in the
4082 * SessionHandle for this single request.
4085 void Curl_free_request_state(struct SessionHandle *data)
4087 Curl_safefree(data->req.protop);
4091 #ifndef CURL_DISABLE_PROXY
4092 /****************************************************************
4093 * Checks if the host is in the noproxy list. returns true if it matches
4094 * and therefore the proxy should NOT be used.
4095 ****************************************************************/
4096 static bool check_noproxy(const char* name, const char* no_proxy)
4098 /* no_proxy=domain1.dom,host.domain2.dom
4099 * (a comma-separated list of hosts which should
4100 * not be proxied, or an asterisk to override
4101 * all proxy variables)
4105 const char* separator = ", ";
4106 size_t no_proxy_len;
4110 if(no_proxy && no_proxy[0]) {
4111 if(Curl_raw_equal("*", no_proxy)) {
4115 /* NO_PROXY was specified and it wasn't just an asterisk */
4117 no_proxy_len = strlen(no_proxy);
4118 endptr = strchr(name, ':');
4120 namelen = endptr - name;
4122 namelen = strlen(name);
4124 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4125 while(tok_start < no_proxy_len &&
4126 strchr(separator, no_proxy[tok_start]) != NULL) {
4127 /* Look for the beginning of the token. */
4131 if(tok_start == no_proxy_len)
4132 break; /* It was all trailing separator chars, no more tokens. */
4134 for(tok_end = tok_start; tok_end < no_proxy_len &&
4135 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4136 /* Look for the end of the token. */
4139 /* To match previous behaviour, where it was necessary to specify
4140 * ".local.com" to prevent matching "notlocal.com", we will leave
4143 if(no_proxy[tok_start] == '.')
4146 if((tok_end - tok_start) <= namelen) {
4147 /* Match the last part of the name to the domain we are checking. */
4148 const char *checkn = name + namelen - (tok_end - tok_start);
4149 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4150 tok_end - tok_start)) {
4151 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4152 /* We either have an exact match, or the previous character is a .
4153 * so it is within the same domain, so no proxy for this host.
4158 } /* if((tok_end - tok_start) <= namelen) */
4159 } /* for(tok_start = 0; tok_start < no_proxy_len;
4160 tok_start = tok_end + 1) */
4161 } /* NO_PROXY was specified and it wasn't just an asterisk */
4166 /****************************************************************
4167 * Detect what (if any) proxy to use. Remember that this selects a host
4168 * name and is not limited to HTTP proxies only.
4169 * The returned pointer must be freed by the caller (unless NULL)
4170 ****************************************************************/
4171 static char *detect_proxy(struct connectdata *conn)
4175 #ifndef CURL_DISABLE_HTTP
4176 /* If proxy was not specified, we check for default proxy environment
4177 * variables, to enable i.e Lynx compliance:
4179 * http_proxy=http://some.server.dom:port/
4180 * https_proxy=http://some.server.dom:port/
4181 * ftp_proxy=http://some.server.dom:port/
4182 * no_proxy=domain1.dom,host.domain2.dom
4183 * (a comma-separated list of hosts which should
4184 * not be proxied, or an asterisk to override
4185 * all proxy variables)
4186 * all_proxy=http://some.server.dom:port/
4187 * (seems to exist for the CERN www lib. Probably
4188 * the first to check for.)
4190 * For compatibility, the all-uppercase versions of these variables are
4191 * checked if the lowercase versions don't exist.
4193 char *no_proxy=NULL;
4194 char proxy_env[128];
4196 no_proxy=curl_getenv("no_proxy");
4198 no_proxy=curl_getenv("NO_PROXY");
4200 if(!check_noproxy(conn->host.name, no_proxy)) {
4201 /* It was not listed as without proxy */
4202 const char *protop = conn->handler->scheme;
4203 char *envp = proxy_env;
4206 /* Now, build <protocol>_proxy and check for such a one to use */
4208 *envp++ = (char)tolower((int)*protop++);
4211 strcpy(envp, "_proxy");
4213 /* read the protocol proxy: */
4214 prox=curl_getenv(proxy_env);
4217 * We don't try the uppercase version of HTTP_PROXY because of
4220 * When curl is used in a webserver application
4221 * environment (cgi or php), this environment variable can
4222 * be controlled by the web server user by setting the
4223 * http header 'Proxy:' to some value.
4225 * This can cause 'internal' http/ftp requests to be
4226 * arbitrarily redirected by any external attacker.
4228 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4229 /* There was no lowercase variable, try the uppercase version: */
4230 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4231 prox=curl_getenv(proxy_env);
4234 if(prox && *prox) { /* don't count "" strings */
4235 proxy = prox; /* use this */
4238 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4240 proxy=curl_getenv("ALL_PROXY");
4242 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4247 #else /* !CURL_DISABLE_HTTP */
4250 #endif /* CURL_DISABLE_HTTP */
4256 * If this is supposed to use a proxy, we need to figure out the proxy
4257 * host name, so that we can re-use an existing connection
4258 * that may exist registered to the same proxy host.
4259 * proxy will be freed before this function returns.
4261 static CURLcode parse_proxy(struct SessionHandle *data,
4262 struct connectdata *conn, char *proxy)
4267 /* We use 'proxyptr' to point to the proxy name from now on... */
4272 /* We do the proxy host string parsing here. We want the host name and the
4273 * port name. Accept a protocol:// prefix
4276 /* Parse the protocol part if present */
4277 endofprot = strstr(proxy, "://");
4279 proxyptr = endofprot+3;
4280 if(checkprefix("socks5h", proxy))
4281 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4282 else if(checkprefix("socks5", proxy))
4283 conn->proxytype = CURLPROXY_SOCKS5;
4284 else if(checkprefix("socks4a", proxy))
4285 conn->proxytype = CURLPROXY_SOCKS4A;
4286 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4287 conn->proxytype = CURLPROXY_SOCKS4;
4288 /* Any other xxx:// : change to http proxy */
4291 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4293 /* Is there a username and password given in this proxy url? */
4294 atsign = strchr(proxyptr, '@');
4296 CURLcode res = CURLE_OK;
4297 char *proxyuser = NULL;
4298 char *proxypasswd = NULL;
4300 res = parse_login_details(proxyptr, atsign - proxyptr,
4301 &proxyuser, &proxypasswd, NULL);
4303 /* found user and password, rip them out. note that we are
4304 unescaping them, as there is otherwise no way to have a
4305 username or password with reserved characters like ':' in
4307 Curl_safefree(conn->proxyuser);
4308 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4309 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4311 conn->proxyuser = strdup("");
4313 if(!conn->proxyuser)
4314 res = CURLE_OUT_OF_MEMORY;
4316 Curl_safefree(conn->proxypasswd);
4317 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4318 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4320 conn->proxypasswd = strdup("");
4322 if(!conn->proxypasswd)
4323 res = CURLE_OUT_OF_MEMORY;
4327 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4328 atsign++; /* the right side of the @-letter */
4331 proxyptr = atsign; /* now use this instead */
4333 res = CURLE_OUT_OF_MEMORY;
4337 Curl_safefree(proxyuser);
4338 Curl_safefree(proxypasswd);
4344 /* start scanning for port number at this point */
4347 /* detect and extract RFC2732-style IPv6-addresses */
4348 if(*proxyptr == '[') {
4349 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4350 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4354 /* yeps, it ended nicely with a bracket as well */
4357 infof(data, "Invalid IPv6 address format\n");
4359 /* Note that if this didn't end with a bracket, we still advanced the
4360 * proxyptr first, but I can't see anything wrong with that as no host
4361 * name nor a numeric can legally start with a bracket.
4365 /* Get port number off proxy.server.com:1080 */
4366 prox_portno = strchr(portptr, ':');
4368 *prox_portno = 0x0; /* cut off number from host name */
4370 /* now set the local port number */
4371 conn->port = strtol(prox_portno, NULL, 10);
4374 if(proxyptr[0]=='/')
4375 /* If the first character in the proxy string is a slash, fail
4376 immediately. The following code will otherwise clear the string which
4377 will lead to code running as if no proxy was set! */
4378 return CURLE_COULDNT_RESOLVE_PROXY;
4380 /* without a port number after the host name, some people seem to use
4381 a slash so we strip everything from the first slash */
4382 atsign = strchr(proxyptr, '/');
4384 *atsign = 0x0; /* cut off path part from host name */
4386 if(data->set.proxyport)
4387 /* None given in the proxy string, then get the default one if it is
4389 conn->port = data->set.proxyport;
4392 /* now, clone the cleaned proxy host name */
4393 conn->proxy.rawalloc = strdup(proxyptr);
4394 conn->proxy.name = conn->proxy.rawalloc;
4396 if(!conn->proxy.rawalloc)
4397 return CURLE_OUT_OF_MEMORY;
4403 * Extract the user and password from the authentication string
4405 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4406 struct connectdata *conn)
4408 char proxyuser[MAX_CURL_USER_LENGTH]="";
4409 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4411 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4412 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4413 MAX_CURL_USER_LENGTH);
4414 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4416 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4417 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4418 MAX_CURL_PASSWORD_LENGTH);
4419 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4422 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4423 if(!conn->proxyuser)
4424 return CURLE_OUT_OF_MEMORY;
4426 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4427 if(!conn->proxypasswd)
4428 return CURLE_OUT_OF_MEMORY;
4432 #endif /* CURL_DISABLE_PROXY */
4437 * Parse the login details (user name, password and options) from the URL and
4438 * strip them out of the host name
4440 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4443 * Outputs: (almost :- all currently undefined)
4444 * conn->bits.user_passwd - non-zero if non-default passwords exist
4445 * user - non-zero length if defined
4446 * passwd - non-zero length if defined
4447 * options - non-zero length if defined
4448 * conn->host.name - remove user name and password
4450 static CURLcode parse_url_login(struct SessionHandle *data,
4451 struct connectdata *conn,
4452 char **user, char **passwd, char **options)
4454 CURLcode result = CURLE_OK;
4456 char *passwdp = NULL;
4457 char *optionsp = NULL;
4459 /* At this point, we're hoping all the other special cases have
4460 * been taken care of, so conn->host.name is at most
4461 * [user[:password][;options]]@]hostname
4463 * We need somewhere to put the embedded details, so do that first.
4466 char *ptr = strchr(conn->host.name, '@');
4467 char *login = conn->host.name;
4469 DEBUGASSERT(!**user);
4470 DEBUGASSERT(!**passwd);
4471 DEBUGASSERT(!**options);
4476 /* We will now try to extract the
4477 * possible login information in a string like:
4478 * ftp://user:password@ftp.my.site:8021/README */
4479 conn->host.name = ++ptr;
4481 /* So the hostname is sane. Only bother interpreting the
4482 * results if we could care. It could still be wasted
4483 * work because it might be overtaken by the programmatically
4484 * set user/passwd, but doing that first adds more cases here :-(
4487 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4490 /* We could use the login information in the URL so extract it */
4491 result = parse_login_details(login, ptr - login - 1,
4492 &userp, &passwdp, &optionsp);
4493 if(result != CURLE_OK)
4499 /* We have a user in the URL */
4500 conn->bits.userpwd_in_url = TRUE;
4501 conn->bits.user_passwd = TRUE; /* enable user+password */
4503 /* Decode the user */
4504 newname = curl_easy_unescape(data, userp, 0, NULL);
4506 result = CURLE_OUT_OF_MEMORY;
4515 /* We have a password in the URL so decode it */
4516 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4518 result = CURLE_OUT_OF_MEMORY;
4523 *passwd = newpasswd;
4527 /* We have an options list in the URL so decode it */
4528 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4530 result = CURLE_OUT_OF_MEMORY;
4535 *options = newoptions;
4541 Curl_safefree(userp);
4542 Curl_safefree(passwdp);
4543 Curl_safefree(optionsp);
4549 * parse_login_details()
4551 * This is used to parse a login string for user name, password and options in
4552 * the following formats:
4556 * user:password;options
4558 * user;options:password
4566 * login [in] - The login string.
4567 * len [in] - The length of the login string.
4568 * userp [in/out] - The address where a pointer to newly allocated memory
4569 * holding the user will be stored upon completion.
4570 * passdwp [in/out] - The address where a pointer to newly allocated memory
4571 * holding the password will be stored upon completion.
4572 * optionsp [in/out] - The address where a pointer to newly allocated memory
4573 * holding the options will be stored upon completion.
4575 * Returns CURLE_OK on success.
4577 static CURLcode parse_login_details(const char *login, const size_t len,
4578 char **userp, char **passwdp,
4581 CURLcode result = CURLE_OK;
4585 const char *psep = NULL;
4586 const char *osep = NULL;
4591 /* Attempt to find the password separator */
4593 psep = strchr(login, ':');
4595 /* Within the constraint of the login string */
4596 if(psep >= login + len)
4600 /* Attempt to find the options separator */
4602 osep = strchr(login, ';');
4604 /* Within the constraint of the login string */
4605 if(osep >= login + len)
4609 /* Calculate the portion lengths */
4611 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4612 (osep ? (size_t)(osep - login) : len));
4614 (osep && osep > psep ? (size_t)(osep - psep) :
4615 (size_t)(login + len - psep)) - 1 : 0);
4617 (psep && psep > osep ? (size_t)(psep - osep) :
4618 (size_t)(login + len - osep)) - 1 : 0);
4620 /* Allocate the user portion buffer */
4622 ubuf = malloc(ulen + 1);
4624 result = CURLE_OUT_OF_MEMORY;
4627 /* Allocate the password portion buffer */
4628 if(!result && passwdp && plen) {
4629 pbuf = malloc(plen + 1);
4631 Curl_safefree(ubuf);
4632 result = CURLE_OUT_OF_MEMORY;
4636 /* Allocate the options portion buffer */
4637 if(!result && optionsp && olen) {
4638 obuf = malloc(olen + 1);
4640 Curl_safefree(pbuf);
4641 Curl_safefree(ubuf);
4642 result = CURLE_OUT_OF_MEMORY;
4647 /* Store the user portion if necessary */
4649 memcpy(ubuf, login, ulen);
4651 Curl_safefree(*userp);
4655 /* Store the password portion if necessary */
4657 memcpy(pbuf, psep + 1, plen);
4659 Curl_safefree(*passwdp);
4663 /* Store the options portion if necessary */
4665 memcpy(obuf, osep + 1, olen);
4667 Curl_safefree(*optionsp);
4675 /*************************************************************
4676 * Figure out the remote port number and fix it in the URL
4678 * No matter if we use a proxy or not, we have to figure out the remote
4679 * port number of various reasons.
4681 * To be able to detect port number flawlessly, we must not confuse them
4682 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4684 * The conn->host.name is currently [user:passwd@]host[:port] where host
4685 * could be a hostname, IPv4 address or IPv6 address.
4687 * The port number embedded in the URL is replaced, if necessary.
4688 *************************************************************/
4689 static CURLcode parse_remote_port(struct SessionHandle *data,
4690 struct connectdata *conn)
4695 /* Note that at this point, the IPv6 address cannot contain any scope
4696 suffix as that has already been removed in the parseurlandfillconn()
4698 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4700 (']' == endbracket)) {
4701 /* this is a RFC2732-style specified IP-address */
4702 conn->bits.ipv6_ip = TRUE;
4704 conn->host.name++; /* skip over the starting bracket */
4705 portptr = strchr(conn->host.name, ']');
4707 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4709 portptr = NULL; /* no port number available */
4714 struct in6_addr in6;
4715 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4716 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4718 failf(data, "IPv6 numerical address used in URL without brackets");
4719 return CURLE_URL_MALFORMAT;
4723 portptr = strrchr(conn->host.name, ':');
4726 if(data->set.use_port && data->state.allow_port) {
4727 /* if set, we use this and ignore the port possibly given in the URL */
4728 conn->remote_port = (unsigned short)data->set.use_port;
4730 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4731 number - since the port number is to be ignored! */
4732 if(conn->bits.httpproxy) {
4733 /* we need to create new URL with the new port number */
4737 if(conn->bits.type_set)
4738 snprintf(type, sizeof(type), ";type=%c",
4739 data->set.prefer_ascii?'A':
4740 (data->set.ftp_list_only?'D':'I'));
4743 * This synthesized URL isn't always right--suffixes like ;type=A are
4744 * stripped off. It would be better to work directly from the original
4745 * URL and simply replace the port part of it.
4747 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4748 conn->bits.ipv6_ip?"[":"", conn->host.name,
4749 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4750 data->state.slash_removed?"/":"", data->state.path,
4753 return CURLE_OUT_OF_MEMORY;
4755 if(data->change.url_alloc) {
4756 Curl_safefree(data->change.url);
4757 data->change.url_alloc = FALSE;
4760 data->change.url = url;
4761 data->change.url_alloc = TRUE;
4765 /* no CURLOPT_PORT given, extract the one from the URL */
4770 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4772 if(rest != (portptr+1) && *rest == '\0') {
4773 /* The colon really did have only digits after it,
4774 * so it is either a port number or a mistake */
4776 if(port > 0xffff) { /* Single unix standard says port numbers are
4778 failf(data, "Port number too large: %lu", port);
4779 return CURLE_URL_MALFORMAT;
4782 *portptr = '\0'; /* cut off the name there */
4783 conn->remote_port = curlx_ultous(port);
4786 /* Browser behavior adaptation. If there's a colon with no digits after,
4787 just cut off the name there which makes us ignore the colon and just
4788 use the default port. Firefox and Chrome both do that. */
4795 * Override the login details from the URL with that in the CURLOPT_USERPWD
4796 * option or a .netrc file, if applicable.
4798 static CURLcode override_login(struct SessionHandle *data,
4799 struct connectdata *conn,
4800 char **userp, char **passwdp, char **optionsp)
4802 if(data->set.str[STRING_USERNAME]) {
4804 *userp = strdup(data->set.str[STRING_USERNAME]);
4806 return CURLE_OUT_OF_MEMORY;
4809 if(data->set.str[STRING_PASSWORD]) {
4811 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4813 return CURLE_OUT_OF_MEMORY;
4816 if(data->set.str[STRING_OPTIONS]) {
4818 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4820 return CURLE_OUT_OF_MEMORY;
4823 conn->bits.netrc = FALSE;
4824 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4825 if(Curl_parsenetrc(conn->host.name,
4827 data->set.str[STRING_NETRC_FILE])) {
4828 infof(data, "Couldn't find host %s in the "
4829 DOT_CHAR "netrc file; using defaults\n",
4833 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4834 file, so that it is safe to use even if we followed a Location: to a
4835 different host or similar. */
4836 conn->bits.netrc = TRUE;
4838 conn->bits.user_passwd = TRUE; /* enable user+password */
4846 * Set password so it's available in the connection.
4848 static CURLcode set_login(struct connectdata *conn,
4849 const char *user, const char *passwd,
4850 const char *options)
4852 CURLcode result = CURLE_OK;
4854 /* If our protocol needs a password and we have none, use the defaults */
4855 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4856 /* Store the default user */
4857 conn->user = strdup(CURL_DEFAULT_USER);
4859 /* Store the default password */
4861 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4863 conn->passwd = NULL;
4865 /* This is the default password, so DON'T set conn->bits.user_passwd */
4868 /* Store the user, zero-length if not set */
4869 conn->user = strdup(user);
4871 /* Store the password (only if user is present), zero-length if not set */
4873 conn->passwd = strdup(passwd);
4875 conn->passwd = NULL;
4878 if(!conn->user || !conn->passwd)
4879 result = CURLE_OUT_OF_MEMORY;
4881 /* Store the options, null if not set */
4882 if(!result && options[0]) {
4883 conn->options = strdup(options);
4886 result = CURLE_OUT_OF_MEMORY;
4892 /*************************************************************
4893 * Resolve the address of the server or proxy
4894 *************************************************************/
4895 static CURLcode resolve_server(struct SessionHandle *data,
4896 struct connectdata *conn,
4899 CURLcode result=CURLE_OK;
4900 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4902 /*************************************************************
4903 * Resolve the name of the server or proxy
4904 *************************************************************/
4905 if(conn->bits.reuse)
4906 /* We're reusing the connection - no need to resolve anything, and
4907 fix_hostname() was called already in create_conn() for the re-use
4912 /* this is a fresh connect */
4914 struct Curl_dns_entry *hostaddr;
4916 /* set a pointer to the hostname we display */
4917 fix_hostname(data, conn, &conn->host);
4919 if(!conn->proxy.name || !*conn->proxy.name) {
4920 /* If not connecting via a proxy, extract the port from the URL, if it is
4921 * there, thus overriding any defaults that might have been set above. */
4922 conn->port = conn->remote_port; /* it is the same port */
4924 /* Resolve target host right on */
4925 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4926 &hostaddr, timeout_ms);
4927 if(rc == CURLRESOLV_PENDING)
4930 else if(rc == CURLRESOLV_TIMEDOUT)
4931 result = CURLE_OPERATION_TIMEDOUT;
4933 else if(!hostaddr) {
4934 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4935 result = CURLE_COULDNT_RESOLVE_HOST;
4936 /* don't return yet, we need to clean up the timeout first */
4940 /* This is a proxy that hasn't been resolved yet. */
4942 /* IDN-fix the proxy name */
4943 fix_hostname(data, conn, &conn->proxy);
4946 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4947 &hostaddr, timeout_ms);
4949 if(rc == CURLRESOLV_PENDING)
4952 else if(rc == CURLRESOLV_TIMEDOUT)
4953 result = CURLE_OPERATION_TIMEDOUT;
4955 else if(!hostaddr) {
4956 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4957 result = CURLE_COULDNT_RESOLVE_PROXY;
4958 /* don't return yet, we need to clean up the timeout first */
4961 DEBUGASSERT(conn->dns_entry == NULL);
4962 conn->dns_entry = hostaddr;
4969 * Cleanup the connection just allocated before we can move along and use the
4970 * previously existing one. All relevant data is copied over and old_conn is
4971 * ready for freeing once this function returns.
4973 static void reuse_conn(struct connectdata *old_conn,
4974 struct connectdata *conn)
4976 if(old_conn->proxy.rawalloc)
4977 free(old_conn->proxy.rawalloc);
4979 /* free the SSL config struct from this connection struct as this was
4980 allocated in vain and is targeted for destruction */
4981 Curl_free_ssl_config(&old_conn->ssl_config);
4983 conn->data = old_conn->data;
4985 /* get the user+password information from the old_conn struct since it may
4986 * be new for this request even when we re-use an existing connection */
4987 conn->bits.user_passwd = old_conn->bits.user_passwd;
4988 if(conn->bits.user_passwd) {
4989 /* use the new user name and password though */
4990 Curl_safefree(conn->user);
4991 Curl_safefree(conn->passwd);
4992 conn->user = old_conn->user;
4993 conn->passwd = old_conn->passwd;
4994 old_conn->user = NULL;
4995 old_conn->passwd = NULL;
4998 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4999 if(conn->bits.proxy_user_passwd) {
5000 /* use the new proxy user name and proxy password though */
5001 Curl_safefree(conn->proxyuser);
5002 Curl_safefree(conn->proxypasswd);
5003 conn->proxyuser = old_conn->proxyuser;
5004 conn->proxypasswd = old_conn->proxypasswd;
5005 old_conn->proxyuser = NULL;
5006 old_conn->proxypasswd = NULL;
5009 /* host can change, when doing keepalive with a proxy or if the case is
5010 different this time etc */
5011 Curl_safefree(conn->host.rawalloc);
5012 conn->host=old_conn->host;
5014 /* persist connection info in session handle */
5015 Curl_persistconninfo(conn);
5018 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5020 Curl_safefree(old_conn->user);
5021 Curl_safefree(old_conn->passwd);
5022 Curl_safefree(old_conn->proxyuser);
5023 Curl_safefree(old_conn->proxypasswd);
5024 Curl_safefree(old_conn->localdev);
5026 Curl_llist_destroy(old_conn->send_pipe, NULL);
5027 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5029 old_conn->send_pipe = NULL;
5030 old_conn->recv_pipe = NULL;
5032 Curl_safefree(old_conn->master_buffer);
5036 * create_conn() sets up a new connectdata struct, or re-uses an already
5037 * existing one, and resolves host name.
5039 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5040 * response will be coming asynchronously. If *async is FALSE, the name is
5043 * @param data The sessionhandle pointer
5044 * @param in_connect is set to the next connection data pointer
5045 * @param async is set TRUE when an async DNS resolution is pending
5046 * @see Curl_setup_conn()
5048 * *NOTE* this function assigns the conn->data pointer!
5051 static CURLcode create_conn(struct SessionHandle *data,
5052 struct connectdata **in_connect,
5055 CURLcode result = CURLE_OK;
5056 struct connectdata *conn;
5057 struct connectdata *conn_temp = NULL;
5060 char *passwd = NULL;
5061 char *options = NULL;
5064 bool prot_missing = FALSE;
5065 bool no_connections_available = FALSE;
5067 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5068 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5072 /*************************************************************
5074 *************************************************************/
5076 if(!data->change.url) {
5077 result = CURLE_URL_MALFORMAT;
5081 /* First, split up the current URL in parts so that we can use the
5082 parts for checking against the already present connections. In order
5083 to not have to modify everything at once, we allocate a temporary
5084 connection data struct and fill in for comparison purposes. */
5085 conn = allocate_conn(data);
5088 result = CURLE_OUT_OF_MEMORY;
5092 /* We must set the return variable as soon as possible, so that our
5093 parent can cleanup any possible allocs we may have done before
5097 /* This initing continues below, see the comment "Continue connectdata
5098 * initialization here" */
5100 /***********************************************************
5101 * We need to allocate memory to store the path in. We get the size of the
5102 * full URL to be sure, and we need to make it at least 256 bytes since
5103 * other parts of the code will rely on this fact
5104 ***********************************************************/
5105 #define LEAST_PATH_ALLOC 256
5106 urllen=strlen(data->change.url);
5107 if(urllen < LEAST_PATH_ALLOC)
5108 urllen=LEAST_PATH_ALLOC;
5111 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5112 * 1 - an extra terminating zero
5113 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5116 Curl_safefree(data->state.pathbuffer);
5117 data->state.path = NULL;
5119 data->state.pathbuffer = malloc(urllen+2);
5120 if(NULL == data->state.pathbuffer) {
5121 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5124 data->state.path = data->state.pathbuffer;
5126 conn->host.rawalloc = malloc(urllen+2);
5127 if(NULL == conn->host.rawalloc) {
5128 Curl_safefree(data->state.pathbuffer);
5129 data->state.path = NULL;
5130 result = CURLE_OUT_OF_MEMORY;
5134 conn->host.name = conn->host.rawalloc;
5135 conn->host.name[0] = 0;
5138 passwd = strdup("");
5139 options = strdup("");
5140 if(!user || !passwd || !options) {
5141 result = CURLE_OUT_OF_MEMORY;
5145 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5147 if(result != CURLE_OK)
5150 /*************************************************************
5151 * No protocol part in URL was used, add it!
5152 *************************************************************/
5154 /* We're guessing prefixes here and if we're told to use a proxy or if
5155 we're gonna follow a Location: later or... then we need the protocol
5156 part added so that we have a valid URL. */
5159 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5162 result = CURLE_OUT_OF_MEMORY;
5166 if(data->change.url_alloc) {
5167 Curl_safefree(data->change.url);
5168 data->change.url_alloc = FALSE;
5171 data->change.url = reurl;
5172 data->change.url_alloc = TRUE; /* free this later */
5175 /*************************************************************
5176 * If the protocol can't handle url query strings, then cut
5177 * of the unhandable part
5178 *************************************************************/
5179 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5180 char *path_q_sep = strchr(conn->data->state.path, '?');
5182 /* according to rfc3986, allow the query (?foo=bar)
5183 also on protocols that can't handle it.
5185 cut the string-part after '?'
5188 /* terminate the string */
5193 if(data->set.str[STRING_BEARER]) {
5194 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5195 if(!conn->xoauth2_bearer) {
5196 return CURLE_OUT_OF_MEMORY;
5200 #ifndef CURL_DISABLE_PROXY
5201 /*************************************************************
5202 * Extract the user and password from the authentication string
5203 *************************************************************/
5204 if(conn->bits.proxy_user_passwd) {
5205 result = parse_proxy_auth(data, conn);
5206 if(result != CURLE_OK)
5210 /*************************************************************
5211 * Detect what (if any) proxy to use
5212 *************************************************************/
5213 if(data->set.str[STRING_PROXY]) {
5214 proxy = strdup(data->set.str[STRING_PROXY]);
5215 /* if global proxy is set, this is it */
5217 failf(data, "memory shortage");
5218 result = CURLE_OUT_OF_MEMORY;
5223 if(data->set.str[STRING_NOPROXY] &&
5224 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5226 free(proxy); /* proxy is in exception list */
5231 proxy = detect_proxy(conn);
5233 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5234 free(proxy); /* Don't bother with an empty proxy string or if the
5235 protocol doesn't work with network */
5239 /***********************************************************************
5240 * If this is supposed to use a proxy, we need to figure out the proxy host
5241 * name, proxy type and port number, so that we can re-use an existing
5242 * connection that may exist registered to the same proxy host.
5243 ***********************************************************************/
5245 result = parse_proxy(data, conn, proxy);
5247 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5252 if((conn->proxytype == CURLPROXY_HTTP) ||
5253 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5254 #ifdef CURL_DISABLE_HTTP
5255 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5256 result = CURLE_UNSUPPORTED_PROTOCOL;
5259 /* force this connection's protocol to become HTTP if not already
5260 compatible - if it isn't tunneling through */
5261 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5262 !conn->bits.tunnel_proxy)
5263 conn->handler = &Curl_handler_http;
5265 conn->bits.httpproxy = TRUE;
5269 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5270 conn->bits.proxy = TRUE;
5273 /* we aren't using the proxy after all... */
5274 conn->bits.proxy = FALSE;
5275 conn->bits.httpproxy = FALSE;
5276 conn->bits.proxy_user_passwd = FALSE;
5277 conn->bits.tunnel_proxy = FALSE;
5280 #endif /* CURL_DISABLE_PROXY */
5282 /*************************************************************
5283 * If the protocol is using SSL and HTTP proxy is used, we set
5284 * the tunnel_proxy bit.
5285 *************************************************************/
5286 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5287 conn->bits.tunnel_proxy = TRUE;
5289 /*************************************************************
5290 * Figure out the remote port number and fix it in the URL
5291 *************************************************************/
5292 result = parse_remote_port(data, conn);
5293 if(result != CURLE_OK)
5296 /* Check for overridden login details and set them accordingly so they
5297 they are known when protocol->setup_connection is called! */
5298 result = override_login(data, conn, &user, &passwd, &options);
5299 if(result != CURLE_OK)
5301 result = set_login(conn, user, passwd, options);
5302 if(result != CURLE_OK)
5305 /*************************************************************
5306 * Setup internals depending on protocol. Needs to be done after
5307 * we figured out what/if proxy to use.
5308 *************************************************************/
5309 result = setup_connection_internals(conn);
5310 if(result != CURLE_OK)
5313 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5314 conn->send[FIRSTSOCKET] = Curl_send_plain;
5315 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5316 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5318 /***********************************************************************
5319 * file: is a special case in that it doesn't need a network connection
5320 ***********************************************************************/
5321 #ifndef CURL_DISABLE_FILE
5322 if(conn->handler->flags & PROTOPT_NONETWORK) {
5324 /* this is supposed to be the connect function so we better at least check
5325 that the file is present here! */
5326 DEBUGASSERT(conn->handler->connect_it);
5327 result = conn->handler->connect_it(conn, &done);
5329 /* Setup a "faked" transfer that'll do nothing */
5330 if(CURLE_OK == result) {
5332 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5334 ConnectionStore(data, conn);
5337 * Setup whatever necessary for a resumed transfer
5339 result = setup_range(data);
5341 DEBUGASSERT(conn->handler->done);
5342 /* we ignore the return code for the protocol-specific DONE */
5343 (void)conn->handler->done(conn, result, FALSE);
5347 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5348 -1, NULL); /* no upload */
5351 /* since we skip do_init() */
5358 /* Get a cloned copy of the SSL config situation stored in the
5359 connection struct. But to get this going nicely, we must first make
5360 sure that the strings in the master copy are pointing to the correct
5361 strings in the session handle strings array!
5363 Keep in mind that the pointers in the master copy are pointing to strings
5364 that will be freed as part of the SessionHandle struct, but all cloned
5365 copies will be separately allocated.
5367 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5368 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5369 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5370 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5371 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5372 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5373 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5375 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5376 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5379 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5380 result = CURLE_OUT_OF_MEMORY;
5384 /*************************************************************
5385 * Check the current list of connections to see if we can
5386 * re-use an already existing one or if we have to create a
5388 *************************************************************/
5390 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5391 we only acknowledge this option if this is not a re-used connection
5392 already (which happens due to follow-location or during a HTTP
5393 authentication phase). */
5394 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5397 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5399 /* If we found a reusable connection, we may still want to
5400 open a new connection if we are pipelining. */
5401 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5402 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5404 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5405 conn_temp->connection_id, pipelen);
5407 if(conn_temp->bundle->num_connections < max_host_connections &&
5408 data->state.conn_cache->num_connections < max_total_connections) {
5409 /* We want a new connection anyway */
5412 infof(data, "We can reuse, but we want a new connection anyway\n");
5419 * We already have a connection for this, we got the former connection
5420 * in the conn_temp variable and thus we need to cleanup the one we
5421 * just allocated before we can move along and use the previously
5424 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5425 handle in a multi stack may nick it */
5426 reuse_conn(conn, conn_temp);
5427 free(conn); /* we don't need this anymore */
5431 /* set a pointer to the hostname we display */
5432 fix_hostname(data, conn, &conn->host);
5434 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5435 conn->connection_id,
5436 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5439 /* We have decided that we want a new connection. However, we may not
5440 be able to do that if we have reached the limit of how many
5441 connections we are allowed to open. */
5442 struct connectbundle *bundle;
5444 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5446 if(max_host_connections > 0 && bundle &&
5447 (bundle->num_connections >= max_host_connections)) {
5448 struct connectdata *conn_candidate;
5450 /* The bundle is full. Let's see if we can kill a connection. */
5451 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5453 if(conn_candidate) {
5454 /* Set the connection's owner correctly, then kill it */
5455 conn_candidate->data = data;
5456 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5459 no_connections_available = TRUE;
5462 if(max_total_connections > 0 &&
5463 (data->state.conn_cache->num_connections >= max_total_connections)) {
5464 struct connectdata *conn_candidate;
5466 /* The cache is full. Let's see if we can kill a connection. */
5467 conn_candidate = find_oldest_idle_connection(data);
5469 if(conn_candidate) {
5470 /* Set the connection's owner correctly, then kill it */
5471 conn_candidate->data = data;
5472 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5475 no_connections_available = TRUE;
5479 if(no_connections_available) {
5480 infof(data, "No connections available.\n");
5485 result = CURLE_NO_CONNECTION_AVAILABLE;
5490 * This is a brand new connection, so let's store it in the connection
5493 ConnectionStore(data, conn);
5497 /* Mark the connection as used */
5500 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5504 * Setup whatever necessary for a resumed transfer
5506 result = setup_range(data);
5510 /* Continue connectdata initialization here. */
5513 * Inherit the proper values from the urldata struct AFTER we have arranged
5514 * the persistent connection stuff
5516 conn->fread_func = data->set.fread_func;
5517 conn->fread_in = data->set.in;
5518 conn->seek_func = data->set.seek_func;
5519 conn->seek_client = data->set.seek_client;
5521 /*************************************************************
5522 * Resolve the address of the server or proxy
5523 *************************************************************/
5524 result = resolve_server(data, conn, async);
5528 Curl_safefree(options);
5529 Curl_safefree(passwd);
5530 Curl_safefree(user);
5531 Curl_safefree(proxy);
5535 /* Curl_setup_conn() is called after the name resolve initiated in
5536 * create_conn() is all done.
5538 * Curl_setup_conn() also handles reused connections
5540 * conn->data MUST already have been setup fine (in create_conn)
5543 CURLcode Curl_setup_conn(struct connectdata *conn,
5544 bool *protocol_done)
5546 CURLcode result = CURLE_OK;
5547 struct SessionHandle *data = conn->data;
5549 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5551 if(conn->handler->flags & PROTOPT_NONETWORK) {
5552 /* nothing to setup when not using a network */
5553 *protocol_done = TRUE;
5556 *protocol_done = FALSE; /* default to not done */
5558 /* set proxy_connect_closed to false unconditionally already here since it
5559 is used strictly to provide extra information to a parent function in the
5560 case of proxy CONNECT failures and we must make sure we don't have it
5561 lingering set from a previous invoke */
5562 conn->bits.proxy_connect_closed = FALSE;
5565 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5566 * basically anything through a http proxy we can't limit this based on
5569 if(data->set.str[STRING_USERAGENT]) {
5570 Curl_safefree(conn->allocptr.uagent);
5571 conn->allocptr.uagent =
5572 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5573 if(!conn->allocptr.uagent)
5574 return CURLE_OUT_OF_MEMORY;
5577 data->req.headerbytecount = 0;
5579 #ifdef CURL_DO_LINEEND_CONV
5580 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5581 #endif /* CURL_DO_LINEEND_CONV */
5583 /* set start time here for timeout purposes in the connect procedure, it
5584 is later set again for the progress meter purpose */
5585 conn->now = Curl_tvnow();
5588 /* loop for CURL_SERVER_CLOSED_CONNECTION */
5590 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5591 /* Try to connect only if not already connected */
5592 bool connected = FALSE;
5594 result = ConnectPlease(data, conn, &connected);
5596 if(result && !conn->ip_addr) {
5597 /* transport connection failure not related with authentication */
5598 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5603 result = Curl_protocol_connect(conn, protocol_done);
5604 if(CURLE_OK == result)
5605 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5608 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5610 /* if the connection was closed by the server while exchanging
5611 authentication informations, retry with the new set
5612 authentication information */
5613 if(conn->bits.proxy_connect_closed) {
5614 /* reset the error buffer */
5615 if(data->set.errorbuffer)
5616 data->set.errorbuffer[0] = '\0';
5617 data->state.errorbuf = FALSE;
5621 if(CURLE_OK != result)
5625 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5626 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5627 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5628 *protocol_done = TRUE;
5629 Curl_verboseconnect(conn);
5630 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5632 /* Stop the loop now */
5636 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5637 set this here perhaps a second time */
5641 * This check is quite a hack. We're calling _fsetmode to fix the problem
5642 * with fwrite converting newline characters (you get mangled text files,
5643 * and corrupted binary files when you download to stdout and redirect it to
5647 if((data->set.out)->_handle == NULL) {
5648 _fsetmode(stdout, "b");
5655 CURLcode Curl_connect(struct SessionHandle *data,
5656 struct connectdata **in_connect,
5658 bool *protocol_done)
5662 *asyncp = FALSE; /* assume synchronous resolves by default */
5664 /* call the stuff that needs to be called */
5665 code = create_conn(data, in_connect, asyncp);
5667 if(CURLE_OK == code) {
5669 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5671 *protocol_done = TRUE;
5673 /* DNS resolution is done: that's either because this is a reused
5674 connection, in which case DNS was unnecessary, or because DNS
5675 really did finish already (synch resolver/fast async resolve) */
5676 code = Curl_setup_conn(*in_connect, protocol_done);
5680 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5685 if(code && *in_connect) {
5686 /* We're not allowed to return failure with memory left allocated
5687 in the connectdata struct, free those here */
5688 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5689 *in_connect = NULL; /* return a NULL */
5695 CURLcode Curl_done(struct connectdata **connp,
5696 CURLcode status, /* an error if this is called after an
5697 error was detected */
5701 struct connectdata *conn;
5702 struct SessionHandle *data;
5704 DEBUGASSERT(*connp);
5710 /* Stop if Curl_done() has already been called */
5713 Curl_getoff_all_pipelines(data, conn);
5715 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5716 !data->set.reuse_forbid &&
5718 /* Stop if pipeline is not empty and we do not have to close
5722 conn->bits.done = TRUE; /* called just now! */
5724 /* Cleanup possible redirect junk */
5725 if(data->req.newurl) {
5726 free(data->req.newurl);
5727 data->req.newurl = NULL;
5729 if(data->req.location) {
5730 free(data->req.location);
5731 data->req.location = NULL;
5734 Curl_resolver_cancel(conn);
5736 if(conn->dns_entry) {
5737 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5738 conn->dns_entry = NULL;
5741 if(status == CURLE_ABORTED_BY_CALLBACK)
5742 /* When we're aborted due to a callback return code it basically have to
5743 be counted as premature as there is trouble ahead if we don't. We have
5744 many callbacks and protocols work differently, we could potentially do
5745 this more fine-grained in the future. */
5748 /* this calls the protocol-specific function pointer previously set */
5749 if(conn->handler->done)
5750 result = conn->handler->done(conn, status, premature);
5754 if(Curl_pgrsDone(conn) && !result)
5755 result = CURLE_ABORTED_BY_CALLBACK;
5757 /* if the transfer was completed in a paused state there can be buffered
5758 data left to write and then kill */
5759 if(data->state.tempwrite) {
5760 free(data->state.tempwrite);
5761 data->state.tempwrite = NULL;
5764 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5765 forced us to close this no matter what we think.
5767 if conn->bits.close is TRUE, it means that the connection should be
5768 closed in spite of all our efforts to be nice, due to protocol
5769 restrictions in our or the server's end
5771 if premature is TRUE, it means this connection was said to be DONE before
5772 the entire request operation is complete and thus we can't know in what
5773 state it is for re-using, so we're forced to close it. In a perfect world
5774 we can add code that keep track of if we really must close it here or not,
5775 but currently we have no such detail knowledge.
5777 if(data->set.reuse_forbid || conn->bits.close || premature) {
5778 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5780 /* If we had an error already, make sure we return that one. But
5781 if we got a new error, return that. */
5786 /* the connection is no longer in use */
5787 if(ConnectionDone(data, conn)) {
5788 /* remember the most recently used connection */
5789 data->state.lastconnect = conn;
5791 infof(data, "Connection #%ld to host %s left intact\n",
5792 conn->connection_id,
5793 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5796 data->state.lastconnect = NULL;
5799 *connp = NULL; /* to make the caller of this function better detect that
5800 this was either closed or handed over to the connection
5801 cache here, and therefore cannot be used from this point on
5803 Curl_free_request_state(data);
5809 * do_init() inits the readwrite session. This is inited each time (in the DO
5810 * function before the protocol-specific DO functions are invoked) for a
5811 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5812 * nothing in here depends on stuff that are setup dynamically for the
5816 static CURLcode do_init(struct connectdata *conn)
5818 struct SessionHandle *data = conn->data;
5819 struct SingleRequest *k = &data->req;
5821 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5822 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5823 data->state.expect100header = FALSE;
5825 if(data->set.opt_no_body)
5826 /* in HTTP lingo, no body means using the HEAD request... */
5827 data->set.httpreq = HTTPREQ_HEAD;
5828 else if(HTTPREQ_HEAD == data->set.httpreq)
5829 /* ... but if unset there really is no perfect method that is the
5830 "opposite" of HEAD but in reality most people probably think GET
5831 then. The important thing is that we can't let it remain HEAD if the
5832 opt_no_body is set FALSE since then we'll behave wrong when getting
5834 data->set.httpreq = HTTPREQ_GET;
5836 k->start = Curl_tvnow(); /* start time */
5837 k->now = k->start; /* current time is now */
5838 k->header = TRUE; /* assume header */
5842 k->buf = data->state.buffer;
5843 k->uploadbuf = data->state.uploadbuffer;
5844 k->hbufp = data->state.headerbuff;
5845 k->ignorebody=FALSE;
5847 Curl_speedinit(data);
5849 Curl_pgrsSetUploadCounter(data, 0);
5850 Curl_pgrsSetDownloadCounter(data, 0);
5856 * do_complete is called when the DO actions are complete.
5858 * We init chunking and trailer bits to their default values here immediately
5859 * before receiving any header data for the current request in the pipeline.
5861 static void do_complete(struct connectdata *conn)
5863 conn->data->req.chunk=FALSE;
5864 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5865 conn->sockfd:conn->writesockfd)+1;
5866 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5869 CURLcode Curl_do(struct connectdata **connp, bool *done)
5871 CURLcode result=CURLE_OK;
5872 struct connectdata *conn = *connp;
5873 struct SessionHandle *data = conn->data;
5875 if(conn->handler->do_it) {
5876 /* generic protocol-specific function pointer set in curl_connect() */
5877 result = conn->handler->do_it(conn, done);
5879 /* This was formerly done in transfer.c, but we better do it here */
5880 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5882 * If the connection is using an easy handle, call reconnect
5883 * to re-establish the connection. Otherwise, let the multi logic
5884 * figure out how to re-establish the connection.
5887 result = Curl_reconnect_request(connp);
5889 if(result == CURLE_OK) {
5890 /* ... finally back to actually retry the DO phase */
5891 conn = *connp; /* re-assign conn since Curl_reconnect_request
5892 creates a new connection */
5893 result = conn->handler->do_it(conn, done);
5900 if((result == CURLE_OK) && *done)
5901 /* do_complete must be called after the protocol-specific DO function */
5908 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5909 * second stage DO state which (wrongly) was introduced to support FTP's
5910 * second connection.
5912 * TODO: A future libcurl should be able to work away this state.
5914 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5915 * DOING state there's more work to do!
5918 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5920 CURLcode result=CURLE_OK;
5924 if(conn->handler->do_more)
5925 result = conn->handler->do_more(conn, complete);
5927 if(!result && (*complete == 1))
5928 /* do_complete must be called after the protocol-specific DO function */