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 arg = va_arg(param, long);
1208 if(arg == CURL_HTTP_VERSION_2_0)
1209 return CURLE_UNSUPPORTED_PROTOCOL;
1211 data->set.httpversion = arg;
1214 case CURLOPT_HTTPAUTH:
1216 * Set HTTP Authentication type BITMASK.
1221 unsigned long auth = va_arg(param, unsigned long);
1223 if(auth == CURLAUTH_NONE) {
1224 data->set.httpauth = auth;
1228 /* the DIGEST_IE bit is only used to set a special marker, for all the
1229 rest we need to handle it as normal DIGEST */
1230 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1232 if(auth & CURLAUTH_DIGEST_IE) {
1233 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1234 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1237 /* switch off bits we can't support */
1239 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1240 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1241 #elif !defined(NTLM_WB_ENABLED)
1242 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1244 #ifndef USE_HTTP_NEGOTIATE
1245 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1249 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1252 while(bitcheck < 31) {
1253 if(auth & (1UL << bitcheck++)) {
1259 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1261 data->set.httpauth = auth;
1265 #endif /* CURL_DISABLE_HTTP */
1267 case CURLOPT_CUSTOMREQUEST:
1269 * Set a custom string to use as request
1271 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1272 va_arg(param, char *));
1275 data->set.httpreq = HTTPREQ_CUSTOM;
1276 here, we continue as if we were using the already set type
1277 and this just changes the actual request keyword */
1280 #ifndef CURL_DISABLE_PROXY
1281 case CURLOPT_HTTPPROXYTUNNEL:
1283 * Tunnel operations through the proxy instead of normal proxy use
1285 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1288 case CURLOPT_PROXYPORT:
1290 * Explicitly set HTTP proxy port number.
1292 data->set.proxyport = va_arg(param, long);
1295 case CURLOPT_PROXYAUTH:
1297 * Set HTTP Authentication type BITMASK.
1302 unsigned long auth = va_arg(param, unsigned long);
1304 if(auth == CURLAUTH_NONE) {
1305 data->set.proxyauth = auth;
1309 /* the DIGEST_IE bit is only used to set a special marker, for all the
1310 rest we need to handle it as normal DIGEST */
1311 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1313 if(auth & CURLAUTH_DIGEST_IE) {
1314 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1315 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1317 /* switch off bits we can't support */
1319 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1320 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1321 #elif !defined(NTLM_WB_ENABLED)
1322 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1324 #ifndef USE_HTTP_NEGOTIATE
1325 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1329 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1332 while(bitcheck < 31) {
1333 if(auth & (1UL << bitcheck++)) {
1339 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1341 data->set.proxyauth = auth;
1347 * Set proxy server:port to use as HTTP proxy.
1349 * If the proxy is set to "" we explicitly say that we don't want to use a
1350 * proxy (even though there might be environment variables saying so).
1352 * Setting it to NULL, means no proxy but allows the environment variables
1355 result = setstropt(&data->set.str[STRING_PROXY],
1356 va_arg(param, char *));
1359 case CURLOPT_PROXYTYPE:
1361 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1363 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1366 case CURLOPT_PROXY_TRANSFER_MODE:
1368 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1370 switch (va_arg(param, long)) {
1372 data->set.proxy_transfer_mode = FALSE;
1375 data->set.proxy_transfer_mode = TRUE;
1378 /* reserve other values for future use */
1379 result = CURLE_UNKNOWN_OPTION;
1383 #endif /* CURL_DISABLE_PROXY */
1385 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1386 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1388 * Set gssapi service name
1390 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1391 va_arg(param, char *));
1394 case CURLOPT_SOCKS5_GSSAPI_NEC:
1396 * set flag for nec socks5 support
1398 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1402 case CURLOPT_WRITEHEADER:
1404 * Custom pointer to pass the header write callback function
1406 data->set.writeheader = (void *)va_arg(param, void *);
1408 case CURLOPT_ERRORBUFFER:
1410 * Error buffer provided by the caller to get the human readable
1413 data->set.errorbuffer = va_arg(param, char *);
1417 * FILE pointer to write to. Or possibly
1418 * used as argument to the write callback.
1420 data->set.out = va_arg(param, void *);
1422 case CURLOPT_FTPPORT:
1424 * Use FTP PORT, this also specifies which IP address to use
1426 result = setstropt(&data->set.str[STRING_FTPPORT],
1427 va_arg(param, char *));
1428 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1432 case CURLOPT_FTP_USE_EPRT:
1433 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1436 case CURLOPT_FTP_USE_EPSV:
1437 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1440 case CURLOPT_FTP_USE_PRET:
1441 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1444 case CURLOPT_FTP_SSL_CCC:
1445 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1448 case CURLOPT_FTP_SKIP_PASV_IP:
1450 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1451 * bypass of the IP address in PASV responses.
1453 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1456 case CURLOPT_INFILE:
1458 * FILE pointer to read the file to be uploaded from. Or possibly
1459 * used as argument to the read callback.
1461 data->set.in = va_arg(param, void *);
1463 case CURLOPT_INFILESIZE:
1465 * If known, this should inform curl about the file size of the
1466 * to-be-uploaded file.
1468 data->set.infilesize = va_arg(param, long);
1470 case CURLOPT_INFILESIZE_LARGE:
1472 * If known, this should inform curl about the file size of the
1473 * to-be-uploaded file.
1475 data->set.infilesize = va_arg(param, curl_off_t);
1477 case CURLOPT_LOW_SPEED_LIMIT:
1479 * The low speed limit that if transfers are below this for
1480 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1482 data->set.low_speed_limit=va_arg(param, long);
1484 case CURLOPT_MAX_SEND_SPEED_LARGE:
1486 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1487 * bytes per second the transfer is throttled..
1489 data->set.max_send_speed=va_arg(param, curl_off_t);
1491 case CURLOPT_MAX_RECV_SPEED_LARGE:
1493 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1494 * second the transfer is throttled..
1496 data->set.max_recv_speed=va_arg(param, curl_off_t);
1498 case CURLOPT_LOW_SPEED_TIME:
1500 * The low speed time that if transfers are below the set
1501 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1503 data->set.low_speed_time=va_arg(param, long);
1509 if(data->change.url_alloc) {
1510 /* the already set URL is allocated, free it first! */
1511 Curl_safefree(data->change.url);
1512 data->change.url_alloc = FALSE;
1514 result = setstropt(&data->set.str[STRING_SET_URL],
1515 va_arg(param, char *));
1516 data->change.url = data->set.str[STRING_SET_URL];
1520 * The port number to use when getting the URL
1522 data->set.use_port = va_arg(param, long);
1524 case CURLOPT_TIMEOUT:
1526 * The maximum time you allow curl to use for a single transfer
1529 data->set.timeout = va_arg(param, long) * 1000L;
1532 case CURLOPT_TIMEOUT_MS:
1533 data->set.timeout = va_arg(param, long);
1536 case CURLOPT_CONNECTTIMEOUT:
1538 * The maximum time you allow curl to use to connect.
1540 data->set.connecttimeout = va_arg(param, long) * 1000L;
1543 case CURLOPT_CONNECTTIMEOUT_MS:
1544 data->set.connecttimeout = va_arg(param, long);
1547 case CURLOPT_ACCEPTTIMEOUT_MS:
1549 * The maximum time you allow curl to wait for server connect
1551 data->set.accepttimeout = va_arg(param, long);
1554 case CURLOPT_USERPWD:
1556 * user:password;options to use in the operation
1558 result = setstropt_userpwd(va_arg(param, char *),
1559 &data->set.str[STRING_USERNAME],
1560 &data->set.str[STRING_PASSWORD],
1561 &data->set.str[STRING_OPTIONS]);
1564 case CURLOPT_USERNAME:
1566 * authentication user name to use in the operation
1568 result = setstropt(&data->set.str[STRING_USERNAME],
1569 va_arg(param, char *));
1572 case CURLOPT_PASSWORD:
1574 * authentication password to use in the operation
1576 result = setstropt(&data->set.str[STRING_PASSWORD],
1577 va_arg(param, char *));
1580 case CURLOPT_OPTIONS:
1582 * authentication options to use in the operation
1584 result = setstropt(&data->set.str[STRING_OPTIONS],
1585 va_arg(param, char *));
1588 case CURLOPT_XOAUTH2_BEARER:
1590 * XOAUTH2 bearer token to use in the operation
1592 result = setstropt(&data->set.str[STRING_BEARER],
1593 va_arg(param, char *));
1596 case CURLOPT_POSTQUOTE:
1598 * List of RAW FTP commands to use after a transfer
1600 data->set.postquote = va_arg(param, struct curl_slist *);
1602 case CURLOPT_PREQUOTE:
1604 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1606 data->set.prequote = va_arg(param, struct curl_slist *);
1610 * List of RAW FTP commands to use before a transfer
1612 data->set.quote = va_arg(param, struct curl_slist *);
1614 case CURLOPT_RESOLVE:
1616 * List of NAME:[address] names to populate the DNS cache with
1617 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1619 * Names added with this API will remain in the cache until explicitly
1620 * removed or the handle is cleaned up.
1622 * This API can remove any name from the DNS cache, but only entries
1623 * that aren't actually in use right now will be pruned immediately.
1625 data->set.resolve = va_arg(param, struct curl_slist *);
1626 data->change.resolve = data->set.resolve;
1628 case CURLOPT_PROGRESSFUNCTION:
1630 * Progress callback function
1632 data->set.fprogress = va_arg(param, curl_progress_callback);
1633 if(data->set.fprogress)
1634 data->progress.callback = TRUE; /* no longer internal */
1636 data->progress.callback = FALSE; /* NULL enforces internal */
1639 case CURLOPT_XFERINFOFUNCTION:
1641 * Transfer info callback function
1643 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1644 if(data->set.fxferinfo)
1645 data->progress.callback = TRUE; /* no longer internal */
1647 data->progress.callback = FALSE; /* NULL enforces internal */
1651 case CURLOPT_PROGRESSDATA:
1653 * Custom client data to pass to the progress callback
1655 data->set.progress_client = va_arg(param, void *);
1658 #ifndef CURL_DISABLE_PROXY
1659 case CURLOPT_PROXYUSERPWD:
1661 * user:password needed to use the proxy
1663 result = setstropt_userpwd(va_arg(param, char *),
1664 &data->set.str[STRING_PROXYUSERNAME],
1665 &data->set.str[STRING_PROXYPASSWORD], NULL);
1667 case CURLOPT_PROXYUSERNAME:
1669 * authentication user name to use in the operation
1671 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1672 va_arg(param, char *));
1674 case CURLOPT_PROXYPASSWORD:
1676 * authentication password to use in the operation
1678 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1679 va_arg(param, char *));
1681 case CURLOPT_NOPROXY:
1683 * proxy exception list
1685 result = setstropt(&data->set.str[STRING_NOPROXY],
1686 va_arg(param, char *));
1692 * What range of the file you want to transfer
1694 result = setstropt(&data->set.str[STRING_SET_RANGE],
1695 va_arg(param, char *));
1697 case CURLOPT_RESUME_FROM:
1699 * Resume transfer at the give file position
1701 data->set.set_resume_from = va_arg(param, long);
1703 case CURLOPT_RESUME_FROM_LARGE:
1705 * Resume transfer at the give file position
1707 data->set.set_resume_from = va_arg(param, curl_off_t);
1709 case CURLOPT_DEBUGFUNCTION:
1711 * stderr write callback.
1713 data->set.fdebug = va_arg(param, curl_debug_callback);
1715 * if the callback provided is NULL, it'll use the default callback
1718 case CURLOPT_DEBUGDATA:
1720 * Set to a void * that should receive all error writes. This
1721 * defaults to CURLOPT_STDERR for normal operations.
1723 data->set.debugdata = va_arg(param, void *);
1725 case CURLOPT_STDERR:
1727 * Set to a FILE * that should receive all error writes. This
1728 * defaults to stderr for normal operations.
1730 data->set.err = va_arg(param, FILE *);
1732 data->set.err = stderr;
1734 case CURLOPT_HEADERFUNCTION:
1736 * Set header write callback
1738 data->set.fwrite_header = va_arg(param, curl_write_callback);
1740 case CURLOPT_WRITEFUNCTION:
1742 * Set data write callback
1744 data->set.fwrite_func = va_arg(param, curl_write_callback);
1745 if(!data->set.fwrite_func) {
1746 data->set.is_fwrite_set = 0;
1747 /* When set to NULL, reset to our internal default function */
1748 data->set.fwrite_func = (curl_write_callback)fwrite;
1751 data->set.is_fwrite_set = 1;
1753 case CURLOPT_READFUNCTION:
1755 * Read data callback
1757 data->set.fread_func = va_arg(param, curl_read_callback);
1758 if(!data->set.fread_func) {
1759 data->set.is_fread_set = 0;
1760 /* When set to NULL, reset to our internal default function */
1761 data->set.fread_func = (curl_read_callback)fread;
1764 data->set.is_fread_set = 1;
1766 case CURLOPT_SEEKFUNCTION:
1768 * Seek callback. Might be NULL.
1770 data->set.seek_func = va_arg(param, curl_seek_callback);
1772 case CURLOPT_SEEKDATA:
1774 * Seek control callback. Might be NULL.
1776 data->set.seek_client = va_arg(param, void *);
1778 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1780 * "Convert from network encoding" callback
1782 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1784 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1786 * "Convert to network encoding" callback
1788 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1790 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1792 * "Convert from UTF-8 encoding" callback
1794 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1796 case CURLOPT_IOCTLFUNCTION:
1798 * I/O control callback. Might be NULL.
1800 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1802 case CURLOPT_IOCTLDATA:
1804 * I/O control data pointer. Might be NULL.
1806 data->set.ioctl_client = va_arg(param, void *);
1808 case CURLOPT_SSLCERT:
1810 * String that holds file name of the SSL certificate to use
1812 result = setstropt(&data->set.str[STRING_CERT],
1813 va_arg(param, char *));
1815 case CURLOPT_SSLCERTTYPE:
1817 * String that holds file type of the SSL certificate to use
1819 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1820 va_arg(param, char *));
1822 case CURLOPT_SSLKEY:
1824 * String that holds file name of the SSL key to use
1826 result = setstropt(&data->set.str[STRING_KEY],
1827 va_arg(param, char *));
1829 case CURLOPT_SSLKEYTYPE:
1831 * String that holds file type of the SSL key to use
1833 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1834 va_arg(param, char *));
1836 case CURLOPT_KEYPASSWD:
1838 * String that holds the SSL or SSH private key password.
1840 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1841 va_arg(param, char *));
1843 case CURLOPT_SSLENGINE:
1845 * String that holds the SSL crypto engine.
1847 argptr = va_arg(param, char *);
1848 if(argptr && argptr[0])
1849 result = Curl_ssl_set_engine(data, argptr);
1852 case CURLOPT_SSLENGINE_DEFAULT:
1854 * flag to set engine as default.
1856 result = Curl_ssl_set_engine_default(data);
1860 * Kludgy option to enable CRLF conversions. Subject for removal.
1862 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1865 case CURLOPT_INTERFACE:
1867 * Set what interface or address/hostname to bind the socket to when
1868 * performing an operation and thus what from-IP your connection will use.
1870 result = setstropt(&data->set.str[STRING_DEVICE],
1871 va_arg(param, char *));
1873 case CURLOPT_LOCALPORT:
1875 * Set what local port to bind the socket to when performing an operation.
1877 data->set.localport = curlx_sltous(va_arg(param, long));
1879 case CURLOPT_LOCALPORTRANGE:
1881 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1883 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1885 case CURLOPT_KRBLEVEL:
1887 * A string that defines the kerberos security level.
1889 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1890 va_arg(param, char *));
1891 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1893 case CURLOPT_GSSAPI_DELEGATION:
1895 * GSSAPI credential delegation
1897 data->set.gssapi_delegation = va_arg(param, long);
1899 case CURLOPT_SSL_VERIFYPEER:
1901 * Enable peer SSL verifying.
1903 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1905 case CURLOPT_SSL_VERIFYHOST:
1907 * Enable verification of the host name in the peer certificate
1909 arg = va_arg(param, long);
1911 /* Obviously people are not reading documentation and too many thought
1912 this argument took a boolean when it wasn't and misused it. We thus ban
1913 1 as a sensible input and we warn about its use. Then we only have the
1914 2 action internally stored as TRUE. */
1917 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1918 return CURLE_BAD_FUNCTION_ARGUMENT;
1921 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1924 /* since these two options are only possible to use on an OpenSSL-
1925 powered libcurl we #ifdef them on this condition so that libcurls
1926 built against other SSL libs will return a proper error when trying
1927 to set this option! */
1928 case CURLOPT_SSL_CTX_FUNCTION:
1930 * Set a SSL_CTX callback
1932 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1934 case CURLOPT_SSL_CTX_DATA:
1936 * Set a SSL_CTX callback parameter pointer
1938 data->set.ssl.fsslctxp = va_arg(param, void *);
1941 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1943 case CURLOPT_CERTINFO:
1944 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1947 case CURLOPT_CAINFO:
1949 * Set CA info for SSL connection. Specify file name of the CA certificate
1951 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1952 va_arg(param, char *));
1954 case CURLOPT_CAPATH:
1956 * Set CA path info for SSL connection. Specify directory name of the CA
1957 * certificates which have been prepared using openssl c_rehash utility.
1959 /* This does not work on windows. */
1960 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1961 va_arg(param, char *));
1963 case CURLOPT_CRLFILE:
1965 * Set CRL file info for SSL connection. Specify file name of the CRL
1966 * to check certificates revocation
1968 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1969 va_arg(param, char *));
1971 case CURLOPT_ISSUERCERT:
1973 * Set Issuer certificate file
1974 * to check certificates issuer
1976 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1977 va_arg(param, char *));
1979 case CURLOPT_TELNETOPTIONS:
1981 * Set a linked list of telnet options
1983 data->set.telnet_options = va_arg(param, struct curl_slist *);
1986 case CURLOPT_BUFFERSIZE:
1988 * The application kindly asks for a differently sized receive buffer.
1989 * If it seems reasonable, we'll use it.
1991 data->set.buffer_size = va_arg(param, long);
1993 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1994 (data->set.buffer_size < 1))
1995 data->set.buffer_size = 0; /* huge internal default */
1999 case CURLOPT_NOSIGNAL:
2001 * The application asks not to set any signal() or alarm() handlers,
2002 * even when using a timeout.
2004 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2009 struct Curl_share *set;
2010 set = va_arg(param, struct Curl_share *);
2012 /* disconnect from old share, if any */
2014 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2016 if(data->dns.hostcachetype == HCACHE_SHARED) {
2017 data->dns.hostcache = NULL;
2018 data->dns.hostcachetype = HCACHE_NONE;
2021 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2022 if(data->share->cookies == data->cookies)
2023 data->cookies = NULL;
2026 if(data->share->sslsession == data->state.session)
2027 data->state.session = NULL;
2029 data->share->dirty--;
2031 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2035 /* use new share if it set */
2039 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2041 data->share->dirty++;
2043 if(data->share->hostcache) {
2044 /* use shared host cache */
2045 data->dns.hostcache = data->share->hostcache;
2046 data->dns.hostcachetype = HCACHE_SHARED;
2048 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2049 if(data->share->cookies) {
2050 /* use shared cookie list, first free own one if any */
2052 Curl_cookie_cleanup(data->cookies);
2053 /* enable cookies since we now use a share that uses cookies! */
2054 data->cookies = data->share->cookies;
2056 #endif /* CURL_DISABLE_HTTP */
2057 if(data->share->sslsession) {
2058 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2059 data->state.session = data->share->sslsession;
2061 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2064 /* check for host cache not needed,
2065 * it will be done by curl_easy_perform */
2069 case CURLOPT_PRIVATE:
2071 * Set private data pointer.
2073 data->set.private_data = va_arg(param, void *);
2076 case CURLOPT_MAXFILESIZE:
2078 * Set the maximum size of a file to download.
2080 data->set.max_filesize = va_arg(param, long);
2084 case CURLOPT_USE_SSL:
2086 * Make transfers attempt to use SSL/TLS.
2088 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2091 case CURLOPT_SSL_OPTIONS:
2092 arg = va_arg(param, long);
2093 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2097 case CURLOPT_FTPSSLAUTH:
2099 * Set a specific auth for FTP-SSL transfers.
2101 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2104 case CURLOPT_IPRESOLVE:
2105 data->set.ipver = va_arg(param, long);
2108 case CURLOPT_MAXFILESIZE_LARGE:
2110 * Set the maximum size of a file to download.
2112 data->set.max_filesize = va_arg(param, curl_off_t);
2115 case CURLOPT_TCP_NODELAY:
2117 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2120 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2123 case CURLOPT_FTP_ACCOUNT:
2124 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2125 va_arg(param, char *));
2128 case CURLOPT_IGNORE_CONTENT_LENGTH:
2129 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2132 case CURLOPT_CONNECT_ONLY:
2134 * No data transfer, set up connection and let application use the socket
2136 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2139 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2140 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2141 va_arg(param, char *));
2144 case CURLOPT_SOCKOPTFUNCTION:
2146 * socket callback function: called after socket() but before connect()
2148 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2151 case CURLOPT_SOCKOPTDATA:
2153 * socket callback data pointer. Might be NULL.
2155 data->set.sockopt_client = va_arg(param, void *);
2158 case CURLOPT_OPENSOCKETFUNCTION:
2160 * open/create socket callback function: called instead of socket(),
2163 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2166 case CURLOPT_OPENSOCKETDATA:
2168 * socket callback data pointer. Might be NULL.
2170 data->set.opensocket_client = va_arg(param, void *);
2173 case CURLOPT_CLOSESOCKETFUNCTION:
2175 * close socket callback function: called instead of close()
2176 * when shutting down a connection
2178 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2181 case CURLOPT_CLOSESOCKETDATA:
2183 * socket callback data pointer. Might be NULL.
2185 data->set.closesocket_client = va_arg(param, void *);
2188 case CURLOPT_SSL_SESSIONID_CACHE:
2189 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2193 /* we only include SSH options if explicitly built to support SSH */
2194 case CURLOPT_SSH_AUTH_TYPES:
2195 data->set.ssh_auth_types = va_arg(param, long);
2198 case CURLOPT_SSH_PUBLIC_KEYFILE:
2200 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2202 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2203 va_arg(param, char *));
2206 case CURLOPT_SSH_PRIVATE_KEYFILE:
2208 * Use this file instead of the $HOME/.ssh/id_dsa file
2210 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2211 va_arg(param, char *));
2213 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2215 * Option to allow for the MD5 of the host public key to be checked
2216 * for validation purposes.
2218 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2219 va_arg(param, char *));
2221 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2222 case CURLOPT_SSH_KNOWNHOSTS:
2224 * Store the file name to read known hosts from.
2226 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2227 va_arg(param, char *));
2230 case CURLOPT_SSH_KEYFUNCTION:
2231 /* setting to NULL is fine since the ssh.c functions themselves will
2232 then rever to use the internal default */
2233 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2236 case CURLOPT_SSH_KEYDATA:
2238 * Custom client data to pass to the SSH keyfunc callback
2240 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2242 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2244 #endif /* USE_LIBSSH2 */
2246 case CURLOPT_HTTP_TRANSFER_DECODING:
2248 * disable libcurl transfer encoding is used
2250 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2253 case CURLOPT_HTTP_CONTENT_DECODING:
2255 * raw data passed to the application when content encoding is used
2257 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2260 case CURLOPT_NEW_FILE_PERMS:
2262 * Uses these permissions instead of 0644
2264 data->set.new_file_perms = va_arg(param, long);
2267 case CURLOPT_NEW_DIRECTORY_PERMS:
2269 * Uses these permissions instead of 0755
2271 data->set.new_directory_perms = va_arg(param, long);
2274 case CURLOPT_ADDRESS_SCOPE:
2276 * We always get longs when passed plain numericals, but for this value we
2277 * know that an unsigned int will always hold the value so we blindly
2278 * typecast to this type
2280 data->set.scope = curlx_sltoui(va_arg(param, long));
2283 case CURLOPT_PROTOCOLS:
2284 /* set the bitmask for the protocols that are allowed to be used for the
2285 transfer, which thus helps the app which takes URLs from users or other
2286 external inputs and want to restrict what protocol(s) to deal
2287 with. Defaults to CURLPROTO_ALL. */
2288 data->set.allowed_protocols = va_arg(param, long);
2291 case CURLOPT_REDIR_PROTOCOLS:
2292 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2293 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2294 to be set in both bitmasks to be allowed to get redirected to. Defaults
2295 to all protocols except FILE and SCP. */
2296 data->set.redir_protocols = va_arg(param, long);
2299 case CURLOPT_MAIL_FROM:
2300 /* Set the SMTP mail originator */
2301 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2302 va_arg(param, char *));
2305 case CURLOPT_MAIL_AUTH:
2306 /* Set the SMTP auth originator */
2307 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2308 va_arg(param, char *));
2311 case CURLOPT_MAIL_RCPT:
2312 /* Set the list of mail recipients */
2313 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2316 case CURLOPT_SASL_IR:
2317 /* Enable/disable SASL initial response */
2318 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2321 case CURLOPT_RTSP_REQUEST:
2324 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2325 * Would this be better if the RTSPREQ_* were just moved into here?
2327 long curl_rtspreq = va_arg(param, long);
2328 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2329 switch(curl_rtspreq) {
2330 case CURL_RTSPREQ_OPTIONS:
2331 rtspreq = RTSPREQ_OPTIONS;
2334 case CURL_RTSPREQ_DESCRIBE:
2335 rtspreq = RTSPREQ_DESCRIBE;
2338 case CURL_RTSPREQ_ANNOUNCE:
2339 rtspreq = RTSPREQ_ANNOUNCE;
2342 case CURL_RTSPREQ_SETUP:
2343 rtspreq = RTSPREQ_SETUP;
2346 case CURL_RTSPREQ_PLAY:
2347 rtspreq = RTSPREQ_PLAY;
2350 case CURL_RTSPREQ_PAUSE:
2351 rtspreq = RTSPREQ_PAUSE;
2354 case CURL_RTSPREQ_TEARDOWN:
2355 rtspreq = RTSPREQ_TEARDOWN;
2358 case CURL_RTSPREQ_GET_PARAMETER:
2359 rtspreq = RTSPREQ_GET_PARAMETER;
2362 case CURL_RTSPREQ_SET_PARAMETER:
2363 rtspreq = RTSPREQ_SET_PARAMETER;
2366 case CURL_RTSPREQ_RECORD:
2367 rtspreq = RTSPREQ_RECORD;
2370 case CURL_RTSPREQ_RECEIVE:
2371 rtspreq = RTSPREQ_RECEIVE;
2374 rtspreq = RTSPREQ_NONE;
2377 data->set.rtspreq = rtspreq;
2382 case CURLOPT_RTSP_SESSION_ID:
2384 * Set the RTSP Session ID manually. Useful if the application is
2385 * resuming a previously established RTSP session
2387 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2388 va_arg(param, char *));
2391 case CURLOPT_RTSP_STREAM_URI:
2393 * Set the Stream URI for the RTSP request. Unless the request is
2394 * for generic server options, the application will need to set this.
2396 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2397 va_arg(param, char *));
2400 case CURLOPT_RTSP_TRANSPORT:
2402 * The content of the Transport: header for the RTSP request
2404 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2405 va_arg(param, char *));
2408 case CURLOPT_RTSP_CLIENT_CSEQ:
2410 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2411 * application is resuming a previously broken connection. The CSEQ
2412 * will increment from this new number henceforth.
2414 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2417 case CURLOPT_RTSP_SERVER_CSEQ:
2418 /* Same as the above, but for server-initiated requests */
2419 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2422 case CURLOPT_INTERLEAVEDATA:
2423 data->set.rtp_out = va_arg(param, void *);
2425 case CURLOPT_INTERLEAVEFUNCTION:
2426 /* Set the user defined RTP write function */
2427 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2430 case CURLOPT_WILDCARDMATCH:
2431 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2433 case CURLOPT_CHUNK_BGN_FUNCTION:
2434 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2436 case CURLOPT_CHUNK_END_FUNCTION:
2437 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2439 case CURLOPT_FNMATCH_FUNCTION:
2440 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2442 case CURLOPT_CHUNK_DATA:
2443 data->wildcard.customptr = va_arg(param, void *);
2445 case CURLOPT_FNMATCH_DATA:
2446 data->set.fnmatch_data = va_arg(param, void *);
2449 case CURLOPT_TLSAUTH_USERNAME:
2450 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2451 va_arg(param, char *));
2452 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2453 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2455 case CURLOPT_TLSAUTH_PASSWORD:
2456 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2457 va_arg(param, char *));
2458 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2459 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2461 case CURLOPT_TLSAUTH_TYPE:
2462 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2463 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2465 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2468 case CURLOPT_DNS_SERVERS:
2469 result = Curl_set_dns_servers(data, va_arg(param, char *));
2471 case CURLOPT_DNS_INTERFACE:
2472 result = Curl_set_dns_interface(data, va_arg(param, char *));
2474 case CURLOPT_DNS_LOCAL_IP4:
2475 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2477 case CURLOPT_DNS_LOCAL_IP6:
2478 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2481 case CURLOPT_TCP_KEEPALIVE:
2482 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2484 case CURLOPT_TCP_KEEPIDLE:
2485 data->set.tcp_keepidle = va_arg(param, long);
2487 case CURLOPT_TCP_KEEPINTVL:
2488 data->set.tcp_keepintvl = va_arg(param, long);
2492 /* unknown tag and its companion, just ignore: */
2493 result = CURLE_UNKNOWN_OPTION;
2500 static void conn_free(struct connectdata *conn)
2505 /* possible left-overs from the async name resolvers */
2506 Curl_resolver_cancel(conn);
2508 /* close the SSL stuff before we close any sockets since they will/may
2509 write to the sockets */
2510 Curl_ssl_close(conn, FIRSTSOCKET);
2511 Curl_ssl_close(conn, SECONDARYSOCKET);
2513 /* close possibly still open sockets */
2514 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2515 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2516 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2517 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2518 if(CURL_SOCKET_BAD != conn->tempsock[0])
2519 Curl_closesocket(conn, conn->tempsock[0]);
2520 if(CURL_SOCKET_BAD != conn->tempsock[1])
2521 Curl_closesocket(conn, conn->tempsock[1]);
2523 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2524 Curl_ntlm_wb_cleanup(conn);
2527 Curl_safefree(conn->user);
2528 Curl_safefree(conn->passwd);
2529 Curl_safefree(conn->xoauth2_bearer);
2530 Curl_safefree(conn->options);
2531 Curl_safefree(conn->proxyuser);
2532 Curl_safefree(conn->proxypasswd);
2533 Curl_safefree(conn->allocptr.proxyuserpwd);
2534 Curl_safefree(conn->allocptr.uagent);
2535 Curl_safefree(conn->allocptr.userpwd);
2536 Curl_safefree(conn->allocptr.accept_encoding);
2537 Curl_safefree(conn->allocptr.te);
2538 Curl_safefree(conn->allocptr.rangeline);
2539 Curl_safefree(conn->allocptr.ref);
2540 Curl_safefree(conn->allocptr.host);
2541 Curl_safefree(conn->allocptr.cookiehost);
2542 Curl_safefree(conn->allocptr.rtsp_transport);
2543 Curl_safefree(conn->trailer);
2544 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2545 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2546 Curl_safefree(conn->master_buffer);
2548 Curl_llist_destroy(conn->send_pipe, NULL);
2549 Curl_llist_destroy(conn->recv_pipe, NULL);
2551 conn->send_pipe = NULL;
2552 conn->recv_pipe = NULL;
2554 Curl_safefree(conn->localdev);
2555 Curl_free_ssl_config(&conn->ssl_config);
2557 free(conn); /* free all the connection oriented data */
2560 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2562 struct SessionHandle *data;
2564 return CURLE_OK; /* this is closed and fine already */
2568 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2572 if(conn->dns_entry != NULL) {
2573 Curl_resolv_unlock(data, conn->dns_entry);
2574 conn->dns_entry = NULL;
2577 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2580 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2581 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2583 /* Authentication data is a mix of connection-related and sessionhandle-
2584 related stuff. NTLM is connection-related so when we close the shop
2588 data->state.authhost.done = FALSE;
2589 data->state.authhost.picked =
2590 data->state.authhost.want;
2593 if(has_proxy_ntlm) {
2594 data->state.authproxy.done = FALSE;
2595 data->state.authproxy.picked =
2596 data->state.authproxy.want;
2599 if(has_host_ntlm || has_proxy_ntlm)
2600 data->state.authproblem = FALSE;
2603 /* Cleanup NTLM connection-related data */
2604 Curl_http_ntlm_cleanup(conn);
2606 /* Cleanup possible redirect junk */
2607 if(data->req.newurl) {
2608 free(data->req.newurl);
2609 data->req.newurl = NULL;
2612 if(conn->handler->disconnect)
2613 /* This is set if protocol-specific cleanups should be made */
2614 conn->handler->disconnect(conn, dead_connection);
2616 /* unlink ourselves! */
2617 infof(data, "Closing connection %ld\n", conn->connection_id);
2618 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2620 #if defined(USE_LIBIDN)
2621 if(conn->host.encalloc)
2622 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2623 with idn_free() since this was allocated
2625 if(conn->proxy.encalloc)
2626 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2627 freed with idn_free() since this was
2628 allocated by libidn */
2629 #elif defined(USE_WIN32_IDN)
2630 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2631 idn_free() since this was allocated by
2632 curl_win32_idn_to_ascii */
2633 if(conn->proxy.encalloc)
2634 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2635 with idn_free() since this was allocated by
2636 curl_win32_idn_to_ascii */
2639 Curl_ssl_close(conn, FIRSTSOCKET);
2641 /* Indicate to all handles on the pipe that we're dead */
2642 if(Curl_multi_pipeline_enabled(data->multi)) {
2643 signalPipeClose(conn->send_pipe, TRUE);
2644 signalPipeClose(conn->recv_pipe, TRUE);
2649 Curl_speedinit(data);
2655 * This function should return TRUE if the socket is to be assumed to
2656 * be dead. Most commonly this happens when the server has closed the
2657 * connection due to inactivity.
2659 static bool SocketIsDead(curl_socket_t sock)
2662 bool ret_val = TRUE;
2664 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2672 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2673 const struct connectdata *conn)
2675 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2676 Curl_multi_pipeline_enabled(handle->multi) &&
2677 (handle->set.httpreq == HTTPREQ_GET ||
2678 handle->set.httpreq == HTTPREQ_HEAD) &&
2679 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2685 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2687 return Curl_multi_pipeline_enabled(handle->multi);
2690 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2691 struct curl_llist *pipeline)
2693 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2694 return CURLE_OUT_OF_MEMORY;
2695 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2699 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2700 struct curl_llist *pipeline)
2702 struct curl_llist_element *curr;
2704 curr = pipeline->head;
2706 if(curr->ptr == handle) {
2707 Curl_llist_remove(pipeline, curr, NULL);
2708 return 1; /* we removed a handle */
2716 #if 0 /* this code is saved here as it is useful for debugging purposes */
2717 static void Curl_printPipeline(struct curl_llist *pipeline)
2719 struct curl_llist_element *curr;
2721 curr = pipeline->head;
2723 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2724 infof(data, "Handle in pipeline: %s\n", data->state.path);
2730 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2732 struct curl_llist_element *curr = pipeline->head;
2734 return (struct SessionHandle *) curr->ptr;
2740 /* remove the specified connection from all (possible) pipelines and related
2742 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2743 struct connectdata *conn)
2745 bool recv_head = (conn->readchannel_inuse &&
2746 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2748 bool send_head = (conn->writechannel_inuse &&
2749 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2751 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2752 conn->readchannel_inuse = FALSE;
2753 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2754 conn->writechannel_inuse = FALSE;
2757 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2759 struct curl_llist_element *curr;
2764 curr = pipeline->head;
2766 struct curl_llist_element *next = curr->next;
2767 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2769 #ifdef DEBUGBUILD /* debug-only code */
2770 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2772 infof(data, "signalPipeClose() found BAAD easy handle\n");
2777 data->state.pipe_broke = TRUE;
2778 Curl_multi_handlePipeBreak(data);
2779 Curl_llist_remove(pipeline, curr, NULL);
2785 * This function finds the connection in the connection
2786 * cache that has been unused for the longest time.
2788 * Returns the pointer to the oldest idle connection, or NULL if none was
2791 static struct connectdata *
2792 find_oldest_idle_connection(struct SessionHandle *data)
2794 struct conncache *bc = data->state.conn_cache;
2795 struct curl_hash_iterator iter;
2796 struct curl_llist_element *curr;
2797 struct curl_hash_element *he;
2801 struct connectdata *conn_candidate = NULL;
2802 struct connectbundle *bundle;
2806 Curl_hash_start_iterate(bc->hash, &iter);
2808 he = Curl_hash_next_element(&iter);
2810 struct connectdata *conn;
2814 curr = bundle->conn_list->head;
2819 /* Set higher score for the age passed since the connection was used */
2820 score = Curl_tvdiff(now, conn->now);
2822 if(score > highscore) {
2824 conn_candidate = conn;
2830 he = Curl_hash_next_element(&iter);
2833 return conn_candidate;
2837 * This function finds the connection in the connection
2838 * bundle that has been unused for the longest time.
2840 * Returns the pointer to the oldest idle connection, or NULL if none was
2843 static struct connectdata *
2844 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2845 struct connectbundle *bundle)
2847 struct curl_llist_element *curr;
2851 struct connectdata *conn_candidate = NULL;
2852 struct connectdata *conn;
2858 curr = bundle->conn_list->head;
2863 /* Set higher score for the age passed since the connection was used */
2864 score = Curl_tvdiff(now, conn->now);
2866 if(score > highscore) {
2868 conn_candidate = conn;
2874 return conn_candidate;
2878 * Given one filled in connection struct (named needle), this function should
2879 * detect if there already is one that has all the significant details
2880 * exactly the same and thus should be used instead.
2882 * If there is a match, this function returns TRUE - and has marked the
2883 * connection as 'in-use'. It must later be called with ConnectionDone() to
2884 * return back to 'idle' (unused) state.
2886 * The force_reuse flag is set if the connection must be used, even if
2887 * the pipelining strategy wants to open a new connection instead of reusing.
2890 ConnectionExists(struct SessionHandle *data,
2891 struct connectdata *needle,
2892 struct connectdata **usethis,
2895 struct connectdata *check;
2896 struct connectdata *chosen = 0;
2897 bool canPipeline = IsPipeliningPossible(data, needle);
2898 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2899 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2900 struct connectbundle *bundle;
2902 *force_reuse = FALSE;
2904 /* We can't pipe if the site is blacklisted */
2905 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2906 canPipeline = FALSE;
2909 /* Look up the bundle with all the connections to this
2911 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2914 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2915 size_t best_pipe_len = max_pipe_len;
2916 struct curl_llist_element *curr;
2918 infof(data, "Found bundle for host %s: %p\n",
2919 needle->host.name, (void *)bundle);
2921 /* We can't pipe if we don't know anything about the server */
2922 if(canPipeline && !bundle->server_supports_pipelining) {
2923 infof(data, "Server doesn't support pipelining\n");
2924 canPipeline = FALSE;
2927 curr = bundle->conn_list->head;
2930 bool credentialsMatch = FALSE;
2934 * Note that if we use a HTTP proxy, we check connections to that
2935 * proxy and not to the actual remote server.
2940 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2942 if(!pipeLen && !check->inuse) {
2943 /* The check for a dead socket makes sense only if there are no
2944 handles in pipeline and the connection isn't already marked in
2947 if(check->handler->protocol & CURLPROTO_RTSP)
2948 /* RTSP is a special case due to RTP interleaving */
2949 dead = Curl_rtsp_connisdead(check);
2951 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2955 infof(data, "Connection %ld seems to be dead!\n",
2956 check->connection_id);
2958 /* disconnect resources */
2959 Curl_disconnect(check, /* dead_connection */ TRUE);
2965 /* Make sure the pipe has only GET requests */
2966 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2967 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2969 if(!IsPipeliningPossible(sh, check))
2973 if(!IsPipeliningPossible(rh, check))
2979 /* can only happen within multi handles, and means that another easy
2980 handle is using this connection */
2984 if(Curl_resolver_asynch()) {
2985 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2986 completed yet and until then we don't re-use this connection */
2987 if(!check->ip_addr_str[0]) {
2989 "Connection #%ld is still name resolving, can't reuse\n",
2990 check->connection_id);
2995 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2996 check->bits.close) {
2997 /* Don't pick a connection that hasn't connected yet or that is going
2999 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
3000 check->connection_id);
3002 if(check->recv_pipe->size > 0) {
3004 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3005 check->connection_id);
3012 if((needle->handler->flags&PROTOPT_SSL) !=
3013 (check->handler->flags&PROTOPT_SSL))
3014 /* don't do mixed SSL and non-SSL connections */
3015 if(!(needle->handler->protocol & check->handler->protocol))
3016 /* except protocols that have been upgraded via TLS */
3019 if(needle->handler->flags&PROTOPT_SSL) {
3020 if((data->set.ssl.verifypeer != check->verifypeer) ||
3021 (data->set.ssl.verifyhost != check->verifyhost))
3025 if(needle->bits.proxy != check->bits.proxy)
3026 /* don't do mixed proxy and non-proxy connections */
3029 if(!canPipeline && check->inuse)
3030 /* this request can't be pipelined but the checked connection is
3031 already in use so we skip it */
3034 if(needle->localdev || needle->localport) {
3035 /* If we are bound to a specific local end (IP+port), we must not
3036 re-use a random other one, although if we didn't ask for a
3037 particular one we can reuse one that was bound.
3039 This comparison is a bit rough and too strict. Since the input
3040 parameters can be specified in numerous ways and still end up the
3041 same it would take a lot of processing to make it really accurate.
3042 Instead, this matching will assume that re-uses of bound connections
3043 will most likely also re-use the exact same binding parameters and
3044 missing out a few edge cases shouldn't hurt anyone very much.
3046 if((check->localport != needle->localport) ||
3047 (check->localportrange != needle->localportrange) ||
3049 !needle->localdev ||
3050 strcmp(check->localdev, needle->localdev))
3054 if((needle->handler->protocol & CURLPROTO_FTP) ||
3055 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3056 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3057 and password as well */
3058 if(!strequal(needle->user, check->user) ||
3059 !strequal(needle->passwd, check->passwd)) {
3060 /* one of them was different */
3063 credentialsMatch = TRUE;
3066 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3067 (needle->bits.httpproxy && check->bits.httpproxy &&
3068 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3069 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3070 (needle->port == check->port))) {
3071 /* The requested connection does not use a HTTP proxy or it uses SSL or
3072 it is a non-SSL protocol tunneled over the same http proxy name and
3073 port number or it is a non-SSL protocol which is allowed to be
3076 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3077 needle->handler->protocol & check->handler->protocol) &&
3078 Curl_raw_equal(needle->host.name, check->host.name) &&
3079 needle->remote_port == check->remote_port) {
3080 if(needle->handler->flags & PROTOPT_SSL) {
3081 /* This is a SSL connection so verify that we're using the same
3082 SSL options as well */
3083 if(!Curl_ssl_config_matches(&needle->ssl_config,
3084 &check->ssl_config)) {
3086 "Connection #%ld has different SSL parameters, "
3088 check->connection_id));
3091 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3093 "Connection #%ld has not started SSL connect, "
3095 check->connection_id));
3102 else { /* The requested needle connection is using a proxy,
3103 is the checked one using the same host, port and type? */
3104 if(check->bits.proxy &&
3105 (needle->proxytype == check->proxytype) &&
3106 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3107 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3108 needle->port == check->port) {
3109 /* This is the same proxy connection, use it! */
3115 /* If we are looking for an NTLM connection, check if this is already
3116 authenticating with the right credentials. If not, keep looking so
3117 that we can reuse NTLM connections if possible. (Especially we
3118 must not reuse the same connection if partway through
3121 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3124 /* We must use this connection, no other */
3125 *force_reuse = TRUE;
3133 /* We can pipeline if we want to. Let's continue looking for
3134 the optimal connection to use, i.e the shortest pipe that is not
3138 /* We have the optimal connection. Let's stop looking. */
3143 /* We can't use the connection if the pipe is full */
3144 if(pipeLen >= max_pipe_len)
3147 /* We can't use the connection if the pipe is penalized */
3148 if(Curl_pipeline_penalized(data, check))
3151 if(pipeLen < best_pipe_len) {
3152 /* This connection has a shorter pipe so far. We'll pick this
3153 and continue searching */
3155 best_pipe_len = pipeLen;
3160 /* We have found a connection. Let's stop searching. */
3170 return TRUE; /* yes, we found one to use! */
3173 return FALSE; /* no matching connecting exists */
3176 /* Mark the connection as 'idle', or close it if the cache is full.
3177 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3179 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3181 /* data->multi->maxconnects can be negative, deal with it. */
3182 size_t maxconnects =
3183 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3184 struct connectdata *conn_candidate = NULL;
3186 /* Mark the current connection as 'unused' */
3187 conn->inuse = FALSE;
3189 if(maxconnects > 0 &&
3190 data->state.conn_cache->num_connections > maxconnects) {
3191 infof(data, "Connection cache is full, closing the oldest one.\n");
3193 conn_candidate = find_oldest_idle_connection(data);
3195 if(conn_candidate) {
3196 /* Set the connection's owner correctly */
3197 conn_candidate->data = data;
3199 /* the winner gets the honour of being disconnected */
3200 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3204 return (conn_candidate == conn) ? FALSE : TRUE;
3208 * The given input connection struct pointer is to be stored in the connection
3209 * cache. If the cache is already full, least interesting existing connection
3210 * (if any) gets closed.
3212 * The given connection should be unique. That must've been checked prior to
3215 static CURLcode ConnectionStore(struct SessionHandle *data,
3216 struct connectdata *conn)
3218 static int connection_id_counter = 0;
3222 /* Assign a number to the connection for easier tracking in the log
3224 conn->connection_id = connection_id_counter++;
3226 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3227 if(result != CURLE_OK)
3228 conn->connection_id = -1;
3233 /* after a TCP connection to the proxy has been verified, this function does
3234 the next magic step.
3236 Note: this function's sub-functions call failf()
3239 CURLcode Curl_connected_proxy(struct connectdata *conn,
3242 if(!conn->bits.proxy || sockindex)
3243 /* this magic only works for the primary socket as the secondary is used
3244 for FTP only and it has FTP specific magic in ftp.c */
3247 switch(conn->proxytype) {
3248 #ifndef CURL_DISABLE_PROXY
3249 case CURLPROXY_SOCKS5:
3250 case CURLPROXY_SOCKS5_HOSTNAME:
3251 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3252 conn->host.name, conn->remote_port,
3255 case CURLPROXY_SOCKS4:
3256 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3257 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3259 case CURLPROXY_SOCKS4A:
3260 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3261 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3263 #endif /* CURL_DISABLE_PROXY */
3264 case CURLPROXY_HTTP:
3265 case CURLPROXY_HTTP_1_0:
3266 /* do nothing here. handled later. */
3270 } /* switch proxytype */
3276 * verboseconnect() displays verbose information after a connect
3278 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3279 void Curl_verboseconnect(struct connectdata *conn)
3281 if(conn->data->set.verbose)
3282 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3283 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3284 conn->ip_addr_str, conn->port, conn->connection_id);
3288 int Curl_protocol_getsock(struct connectdata *conn,
3289 curl_socket_t *socks,
3292 if(conn->handler->proto_getsock)
3293 return conn->handler->proto_getsock(conn, socks, numsocks);
3294 return GETSOCK_BLANK;
3297 int Curl_doing_getsock(struct connectdata *conn,
3298 curl_socket_t *socks,
3301 if(conn && conn->handler->doing_getsock)
3302 return conn->handler->doing_getsock(conn, socks, numsocks);
3303 return GETSOCK_BLANK;
3307 * We are doing protocol-specific connecting and this is being called over and
3308 * over from the multi interface until the connection phase is done on
3312 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3315 CURLcode result=CURLE_OK;
3317 if(conn && conn->handler->connecting) {
3319 result = conn->handler->connecting(conn, done);
3328 * We are DOING this is being called over and over from the multi interface
3329 * until the DOING phase is done on protocol layer.
3332 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3334 CURLcode result=CURLE_OK;
3336 if(conn && conn->handler->doing) {
3338 result = conn->handler->doing(conn, done);
3347 * We have discovered that the TCP connection has been successful, we can now
3348 * proceed with some action.
3351 CURLcode Curl_protocol_connect(struct connectdata *conn,
3352 bool *protocol_done)
3354 CURLcode result=CURLE_OK;
3356 *protocol_done = FALSE;
3358 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3359 /* We already are connected, get back. This may happen when the connect
3360 worked fine in the first call, like when we connect to a local server
3361 or proxy. Note that we don't know if the protocol is actually done.
3363 Unless this protocol doesn't have any protocol-connect callback, as
3364 then we know we're done. */
3365 if(!conn->handler->connecting)
3366 *protocol_done = TRUE;
3371 if(!conn->bits.protoconnstart) {
3373 result = Curl_proxy_connect(conn);
3377 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3378 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3379 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3380 before proceeding further. Return CURLE_OK so we'll be called again */
3383 if(conn->handler->connect_it) {
3384 /* is there a protocol-specific connect() procedure? */
3386 /* Call the protocol-specific connect function */
3387 result = conn->handler->connect_it(conn, protocol_done);
3390 *protocol_done = TRUE;
3392 /* it has started, possibly even completed but that knowledge isn't stored
3395 conn->bits.protoconnstart = TRUE;
3398 return result; /* pass back status */
3402 * Helpers for IDNA convertions.
3404 static bool is_ASCII_name(const char *hostname)
3406 const unsigned char *ch = (const unsigned char*)hostname;
3417 * Check if characters in hostname is allowed in Top Level Domain.
3419 static bool tld_check_name(struct SessionHandle *data,
3420 const char *ace_hostname)
3423 char *uc_name = NULL;
3425 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3426 const char *tld_errmsg = "<no msg>";
3431 /* Convert (and downcase) ACE-name back into locale's character set */
3432 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3433 if(rc != IDNA_SUCCESS)
3436 rc = tld_check_lz(uc_name, &err_pos, NULL);
3437 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3438 #ifdef HAVE_TLD_STRERROR
3439 if(rc != TLD_SUCCESS)
3440 tld_errmsg = tld_strerror((Tld_rc)rc);
3442 if(rc == TLD_INVALID)
3443 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3444 tld_errmsg, err_pos, uc_name[err_pos],
3445 uc_name[err_pos] & 255);
3446 else if(rc != TLD_SUCCESS)
3447 infof(data, "WARNING: TLD check for %s failed; %s\n",
3448 uc_name, tld_errmsg);
3449 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3452 if(rc != TLD_SUCCESS)
3460 * Perform any necessary IDN conversion of hostname
3462 static void fix_hostname(struct SessionHandle *data,
3463 struct connectdata *conn, struct hostname *host)
3468 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3472 /* set the name we use to display the host name */
3473 host->dispname = host->name;
3474 if(!is_ASCII_name(host->name)) {
3476 /*************************************************************
3477 * Check name for non-ASCII and convert hostname to ACE form.
3478 *************************************************************/
3479 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3480 char *ace_hostname = NULL;
3481 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3482 infof (data, "Input domain encoded as `%s'\n",
3483 stringprep_locale_charset ());
3484 if(rc != IDNA_SUCCESS)
3485 infof(data, "Failed to convert %s to ACE; %s\n",
3486 host->name, Curl_idn_strerror(conn,rc));
3488 /* tld_check_name() displays a warning if the host name contains
3489 "illegal" characters for this TLD */
3490 (void)tld_check_name(data, ace_hostname);
3492 host->encalloc = ace_hostname;
3493 /* change the name pointer to point to the encoded hostname */
3494 host->name = host->encalloc;
3497 #elif defined(USE_WIN32_IDN)
3498 /*************************************************************
3499 * Check name for non-ASCII and convert hostname to ACE form.
3500 *************************************************************/
3501 char *ace_hostname = NULL;
3502 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3504 infof(data, "Failed to convert %s to ACE;\n",
3507 host->encalloc = ace_hostname;
3508 /* change the name pointer to point to the encoded hostname */
3509 host->name = host->encalloc;
3512 infof(data, "IDN support not present, can't parse Unicode domains\n");
3517 static void llist_dtor(void *user, void *element)
3525 * Allocate and initialize a new connectdata object.
3527 static struct connectdata *allocate_conn(struct SessionHandle *data)
3529 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3533 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3534 already from start to avoid NULL
3535 situations and checks */
3537 /* and we setup a few fields in case we end up actually using this struct */
3539 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3540 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3541 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3542 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3543 conn->connection_id = -1; /* no ID */
3544 conn->port = -1; /* unknown at this point */
3546 /* Default protocol-independent behavior doesn't support persistent
3547 connections, so we set this to force-close. Protocols that support
3548 this need to set this to FALSE in their "curl_do" functions. */
3549 conn->bits.close = TRUE;
3551 /* Store creation time to help future close decision making */
3552 conn->created = Curl_tvnow();
3554 conn->data = data; /* Setup the association between this connection
3555 and the SessionHandle */
3557 conn->proxytype = data->set.proxytype; /* type */
3559 #ifdef CURL_DISABLE_PROXY
3561 conn->bits.proxy = FALSE;
3562 conn->bits.httpproxy = FALSE;
3563 conn->bits.proxy_user_passwd = FALSE;
3564 conn->bits.tunnel_proxy = FALSE;
3566 #else /* CURL_DISABLE_PROXY */
3568 /* note that these two proxy bits are now just on what looks to be
3569 requested, they may be altered down the road */
3570 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3571 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3572 conn->bits.httpproxy = (conn->bits.proxy &&
3573 (conn->proxytype == CURLPROXY_HTTP ||
3574 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3575 conn->bits.proxy_user_passwd =
3576 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3577 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3579 #endif /* CURL_DISABLE_PROXY */
3581 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3582 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3583 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3585 conn->verifypeer = data->set.ssl.verifypeer;
3586 conn->verifyhost = data->set.ssl.verifyhost;
3588 conn->ip_version = data->set.ipver;
3590 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3591 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3592 conn->ntlm_auth_hlpr_pid = 0;
3593 conn->challenge_header = NULL;
3594 conn->response_header = NULL;
3597 if(Curl_multi_pipeline_enabled(data->multi) &&
3598 !conn->master_buffer) {
3599 /* Allocate master_buffer to be used for pipelining */
3600 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3601 if(!conn->master_buffer)
3605 /* Initialize the pipeline lists */
3606 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3607 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3608 if(!conn->send_pipe || !conn->recv_pipe)
3612 conn->data_prot = PROT_CLEAR;
3615 /* Store the local bind parameters that will be used for this connection */
3616 if(data->set.str[STRING_DEVICE]) {
3617 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3621 conn->localportrange = data->set.localportrange;
3622 conn->localport = data->set.localport;
3624 /* the close socket stuff needs to be copied to the connection struct as
3625 it may live on without (this specific) SessionHandle */
3626 conn->fclosesocket = data->set.fclosesocket;
3627 conn->closesocket_client = data->set.closesocket_client;
3632 Curl_llist_destroy(conn->send_pipe, NULL);
3633 Curl_llist_destroy(conn->recv_pipe, NULL);
3635 conn->send_pipe = NULL;
3636 conn->recv_pipe = NULL;
3638 Curl_safefree(conn->master_buffer);
3639 Curl_safefree(conn->localdev);
3640 Curl_safefree(conn);
3644 static CURLcode findprotocol(struct SessionHandle *data,
3645 struct connectdata *conn,
3646 const char *protostr)
3648 const struct Curl_handler * const *pp;
3649 const struct Curl_handler *p;
3651 /* Scan protocol handler table and match against 'protostr' to set a few
3652 variables based on the URL. Now that the handler may be changed later
3653 when the protocol specific setup function is called. */
3654 for(pp = protocols; (p = *pp) != NULL; pp++) {
3655 if(Curl_raw_equal(p->scheme, protostr)) {
3656 /* Protocol found in table. Check if allowed */
3657 if(!(data->set.allowed_protocols & p->protocol))
3661 /* it is allowed for "normal" request, now do an extra check if this is
3662 the result of a redirect */
3663 if(data->state.this_is_a_follow &&
3664 !(data->set.redir_protocols & p->protocol))
3668 /* Perform setup complement if some. */
3669 conn->handler = conn->given = p;
3671 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3677 /* The protocol was not found in the table, but we don't have to assign it
3678 to anything since it is already assigned to a dummy-struct in the
3679 create_conn() function when the connectdata struct is allocated. */
3680 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3683 return CURLE_UNSUPPORTED_PROTOCOL;
3687 * Parse URL and fill in the relevant members of the connection struct.
3689 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3690 struct connectdata *conn,
3692 char **userp, char **passwdp,
3697 char *path = data->state.path;
3703 bool rebuild_url = FALSE;
3705 *prot_missing = FALSE;
3707 /*************************************************************
3710 * We need to parse the url even when using the proxy, because we will need
3711 * the hostname and port in case we are trying to SSL connect through the
3712 * proxy -- and we don't know if we will need to use SSL until we parse the
3714 ************************************************************/
3715 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3717 Curl_raw_equal(protobuf, "file")) {
3718 if(path[0] == '/' && path[1] == '/') {
3719 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3720 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3721 * file://localhost/<path> is similar to how other schemes treat missing
3722 * hostnames. See RFC 1808. */
3724 /* This cannot be done with strcpy() in a portable manner, since the
3725 memory areas overlap! */
3726 memmove(path, path + 2, strlen(path + 2)+1);
3729 * we deal with file://<host>/<path> differently since it supports no
3730 * hostname other than "localhost" and "127.0.0.1", which is unique among
3731 * the URL protocols specified in RFC 1738
3733 if(path[0] != '/') {
3734 /* the URL included a host name, we ignore host names in file:// URLs
3735 as the standards don't define what to do with them */
3736 char *ptr=strchr(path, '/');
3738 /* there was a slash present
3740 RFC1738 (section 3.1, page 5) says:
3742 The rest of the locator consists of data specific to the scheme,
3743 and is known as the "url-path". It supplies the details of how the
3744 specified resource can be accessed. Note that the "/" between the
3745 host (or port) and the url-path is NOT part of the url-path.
3747 As most agents use file://localhost/foo to get '/foo' although the
3748 slash preceding foo is a separator and not a slash for the path,
3749 a URL as file://localhost//foo must be valid as well, to refer to
3750 the same file with an absolute path.
3753 if(ptr[1] && ('/' == ptr[1]))
3754 /* if there was two slashes, we skip the first one as that is then
3755 used truly as a separator */
3758 /* This cannot be made with strcpy, as the memory chunks overlap! */
3759 memmove(path, ptr, strlen(ptr)+1);
3763 protop = "file"; /* protocol string */
3769 if(2 > sscanf(data->change.url,
3770 "%15[^\n:]://%[^\n/?]%[^\n]",
3772 conn->host.name, path)) {
3775 * The URL was badly formatted, let's try the browser-style _without_
3776 * protocol specified like 'http://'.
3778 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3781 * We couldn't even get this format.
3782 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3783 * assigned, but the return value is EOF!
3785 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3786 if(!(rc == -1 && *conn->host.name))
3789 failf(data, "<url> malformed");
3790 return CURLE_URL_MALFORMAT;
3795 * Since there was no protocol part specified, we guess what protocol it
3796 * is based on the first letters of the server name.
3799 /* Note: if you add a new protocol, please update the list in
3800 * lib/version.c too! */
3802 if(checkprefix("FTP.", conn->host.name))
3804 else if(checkprefix("DICT.", conn->host.name))
3806 else if(checkprefix("LDAP.", conn->host.name))
3808 else if(checkprefix("IMAP.", conn->host.name))
3810 else if(checkprefix("SMTP.", conn->host.name))
3812 else if(checkprefix("POP3.", conn->host.name))
3818 *prot_missing = TRUE; /* not given in URL */
3824 /* We search for '?' in the host name (but only on the right side of a
3825 * @-letter to allow ?-letters in username and password) to handle things
3826 * like http://example.com?param= (notice the missing '/').
3828 at = strchr(conn->host.name, '@');
3830 query = strchr(at+1, '?');
3832 query = strchr(conn->host.name, '?');
3835 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3836 a slash after the '?', that is where the path currently begins and the
3837 '?string' is still part of the host name.
3839 We must move the trailing part from the host name and put it first in
3840 the path. And have it all prefixed with a slash.
3843 size_t hostlen = strlen(query);
3844 size_t pathlen = strlen(path);
3846 /* move the existing path plus the zero byte forward, to make room for
3847 the host-name part */
3848 memmove(path+hostlen+1, path, pathlen+1);
3850 /* now copy the trailing host part in front of the existing path */
3851 memcpy(path+1, query, hostlen);
3853 path[0]='/'; /* prepend the missing slash */
3856 *query=0; /* now cut off the hostname at the ? */
3859 /* if there's no path set, use a single slash */
3864 /* If the URL is malformatted (missing a '/' after hostname before path) we
3865 * insert a slash here. The only letter except '/' we accept to start a path
3868 if(path[0] == '?') {
3869 /* We need this function to deal with overlapping memory areas. We know
3870 that the memory area 'path' points to is 'urllen' bytes big and that
3871 is bigger than the path. Use +1 to move the zero byte too. */
3872 memmove(&path[1], path, strlen(path)+1);
3877 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3878 char *newp = Curl_dedotdotify(path);
3880 return CURLE_OUT_OF_MEMORY;
3882 if(strcmp(newp, path)) {
3884 free(data->state.pathbuffer);
3885 data->state.pathbuffer = newp;
3886 data->state.path = newp;
3894 * "rebuild_url" means that one or more URL components have been modified so
3895 * we need to generate an updated full version. We need the corrected URL
3896 * when communicating over HTTP proxy and we don't know at this point if
3897 * we're using a proxy or not.
3902 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3904 size_t urllen = strlen(data->change.url); /* original URL length */
3906 size_t prefixlen = strlen(conn->host.name);
3909 prefixlen += strlen(protop) + strlen("://");
3911 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3913 return CURLE_OUT_OF_MEMORY;
3915 /* copy the prefix */
3916 memcpy(reurl, data->change.url, prefixlen);
3918 /* append the trailing piece + zerobyte */
3919 memcpy(&reurl[prefixlen], path, plen + 1);
3921 /* possible free the old one */
3922 if(data->change.url_alloc) {
3923 Curl_safefree(data->change.url);
3924 data->change.url_alloc = FALSE;
3927 infof(data, "Rebuilt URL to: %s\n", reurl);
3929 data->change.url = reurl;
3930 data->change.url_alloc = TRUE; /* free this later */
3934 * Parse the login details from the URL and strip them out of
3937 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3938 if(result != CURLE_OK)
3941 if(conn->host.name[0] == '[') {
3942 /* This looks like an IPv6 address literal. See if there is an address
3944 char *percent = strstr (conn->host.name, "%25");
3947 unsigned long scope = strtoul (percent + 3, &endp, 10);
3949 /* The address scope was well formed. Knock it out of the
3951 memmove(percent, endp, strlen(endp)+1);
3952 if(!data->state.this_is_a_follow)
3953 /* Don't honour a scope given in a Location: header */
3954 conn->scope = (unsigned int)scope;
3957 infof(data, "Invalid IPv6 address format\n");
3962 /* Override any scope that was set above. */
3963 conn->scope = data->set.scope;
3965 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3966 last part of the URI. We are looking for the first '#' so that we deal
3967 gracefully with non conformant URI such as http://example.com#foo#bar. */
3968 fragment = strchr(path, '#');
3972 /* we know the path part ended with a fragment, so we know the full URL
3973 string does too and we need to cut it off from there so it isn't used
3975 fragment = strchr(data->change.url, '#');
3981 * So if the URL was A://B/C#D,
3983 * conn->host.name is B
3984 * data->state.path is /C
3987 return findprotocol(data, conn, protop);
3991 * If we're doing a resumed transfer, we need to setup our stuff
3994 static CURLcode setup_range(struct SessionHandle *data)
3996 struct UrlState *s = &data->state;
3997 s->resume_from = data->set.set_resume_from;
3998 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3999 if(s->rangestringalloc)
4003 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
4005 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4007 s->rangestringalloc = (s->range)?TRUE:FALSE;
4010 return CURLE_OUT_OF_MEMORY;
4012 /* tell ourselves to fetch this range */
4013 s->use_range = TRUE; /* enable range download */
4016 s->use_range = FALSE; /* disable range download */
4023 * setup_connection_internals() -
4025 * Setup connection internals specific to the requested protocol in the
4026 * SessionHandle. This is inited and setup before the connection is made but
4027 * is about the particular protocol that is to be used.
4029 * This MUST get called after proxy magic has been figured out.
4031 static CURLcode setup_connection_internals(struct connectdata *conn)
4033 const struct Curl_handler * p;
4036 /* in some case in the multi state-machine, we go back to the CONNECT state
4037 and then a second (or third or...) call to this function will be made
4038 without doing a DISCONNECT or DONE in between (since the connection is
4039 yet in place) and therefore this function needs to first make sure
4040 there's no lingering previous data allocated. */
4041 Curl_free_request_state(conn->data);
4043 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4044 conn->data->req.maxdownload = -1;
4046 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4048 /* Perform setup complement if some. */
4051 if(p->setup_connection) {
4052 result = (*p->setup_connection)(conn);
4054 if(result != CURLE_OK)
4057 p = conn->handler; /* May have changed. */
4061 /* we check for -1 here since if proxy was detected already, this
4062 was very likely already set to the proxy port */
4063 conn->port = p->defport;
4065 /* only if remote_port was not already parsed off the URL we use the
4066 default port number */
4067 if(!conn->remote_port)
4068 conn->remote_port = (unsigned short)conn->given->defport;
4074 * Curl_free_request_state() should free temp data that was allocated in the
4075 * SessionHandle for this single request.
4078 void Curl_free_request_state(struct SessionHandle *data)
4080 Curl_safefree(data->req.protop);
4084 #ifndef CURL_DISABLE_PROXY
4085 /****************************************************************
4086 * Checks if the host is in the noproxy list. returns true if it matches
4087 * and therefore the proxy should NOT be used.
4088 ****************************************************************/
4089 static bool check_noproxy(const char* name, const char* no_proxy)
4091 /* no_proxy=domain1.dom,host.domain2.dom
4092 * (a comma-separated list of hosts which should
4093 * not be proxied, or an asterisk to override
4094 * all proxy variables)
4098 const char* separator = ", ";
4099 size_t no_proxy_len;
4103 if(no_proxy && no_proxy[0]) {
4104 if(Curl_raw_equal("*", no_proxy)) {
4108 /* NO_PROXY was specified and it wasn't just an asterisk */
4110 no_proxy_len = strlen(no_proxy);
4111 endptr = strchr(name, ':');
4113 namelen = endptr - name;
4115 namelen = strlen(name);
4117 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4118 while(tok_start < no_proxy_len &&
4119 strchr(separator, no_proxy[tok_start]) != NULL) {
4120 /* Look for the beginning of the token. */
4124 if(tok_start == no_proxy_len)
4125 break; /* It was all trailing separator chars, no more tokens. */
4127 for(tok_end = tok_start; tok_end < no_proxy_len &&
4128 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4129 /* Look for the end of the token. */
4132 /* To match previous behaviour, where it was necessary to specify
4133 * ".local.com" to prevent matching "notlocal.com", we will leave
4136 if(no_proxy[tok_start] == '.')
4139 if((tok_end - tok_start) <= namelen) {
4140 /* Match the last part of the name to the domain we are checking. */
4141 const char *checkn = name + namelen - (tok_end - tok_start);
4142 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4143 tok_end - tok_start)) {
4144 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4145 /* We either have an exact match, or the previous character is a .
4146 * so it is within the same domain, so no proxy for this host.
4151 } /* if((tok_end - tok_start) <= namelen) */
4152 } /* for(tok_start = 0; tok_start < no_proxy_len;
4153 tok_start = tok_end + 1) */
4154 } /* NO_PROXY was specified and it wasn't just an asterisk */
4159 /****************************************************************
4160 * Detect what (if any) proxy to use. Remember that this selects a host
4161 * name and is not limited to HTTP proxies only.
4162 * The returned pointer must be freed by the caller (unless NULL)
4163 ****************************************************************/
4164 static char *detect_proxy(struct connectdata *conn)
4168 #ifndef CURL_DISABLE_HTTP
4169 /* If proxy was not specified, we check for default proxy environment
4170 * variables, to enable i.e Lynx compliance:
4172 * http_proxy=http://some.server.dom:port/
4173 * https_proxy=http://some.server.dom:port/
4174 * ftp_proxy=http://some.server.dom:port/
4175 * no_proxy=domain1.dom,host.domain2.dom
4176 * (a comma-separated list of hosts which should
4177 * not be proxied, or an asterisk to override
4178 * all proxy variables)
4179 * all_proxy=http://some.server.dom:port/
4180 * (seems to exist for the CERN www lib. Probably
4181 * the first to check for.)
4183 * For compatibility, the all-uppercase versions of these variables are
4184 * checked if the lowercase versions don't exist.
4186 char *no_proxy=NULL;
4187 char proxy_env[128];
4189 no_proxy=curl_getenv("no_proxy");
4191 no_proxy=curl_getenv("NO_PROXY");
4193 if(!check_noproxy(conn->host.name, no_proxy)) {
4194 /* It was not listed as without proxy */
4195 const char *protop = conn->handler->scheme;
4196 char *envp = proxy_env;
4199 /* Now, build <protocol>_proxy and check for such a one to use */
4201 *envp++ = (char)tolower((int)*protop++);
4204 strcpy(envp, "_proxy");
4206 /* read the protocol proxy: */
4207 prox=curl_getenv(proxy_env);
4210 * We don't try the uppercase version of HTTP_PROXY because of
4213 * When curl is used in a webserver application
4214 * environment (cgi or php), this environment variable can
4215 * be controlled by the web server user by setting the
4216 * http header 'Proxy:' to some value.
4218 * This can cause 'internal' http/ftp requests to be
4219 * arbitrarily redirected by any external attacker.
4221 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4222 /* There was no lowercase variable, try the uppercase version: */
4223 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4224 prox=curl_getenv(proxy_env);
4227 if(prox && *prox) { /* don't count "" strings */
4228 proxy = prox; /* use this */
4231 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4233 proxy=curl_getenv("ALL_PROXY");
4235 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4240 #else /* !CURL_DISABLE_HTTP */
4243 #endif /* CURL_DISABLE_HTTP */
4249 * If this is supposed to use a proxy, we need to figure out the proxy
4250 * host name, so that we can re-use an existing connection
4251 * that may exist registered to the same proxy host.
4252 * proxy will be freed before this function returns.
4254 static CURLcode parse_proxy(struct SessionHandle *data,
4255 struct connectdata *conn, char *proxy)
4260 /* We use 'proxyptr' to point to the proxy name from now on... */
4265 /* We do the proxy host string parsing here. We want the host name and the
4266 * port name. Accept a protocol:// prefix
4269 /* Parse the protocol part if present */
4270 endofprot = strstr(proxy, "://");
4272 proxyptr = endofprot+3;
4273 if(checkprefix("socks5h", proxy))
4274 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4275 else if(checkprefix("socks5", proxy))
4276 conn->proxytype = CURLPROXY_SOCKS5;
4277 else if(checkprefix("socks4a", proxy))
4278 conn->proxytype = CURLPROXY_SOCKS4A;
4279 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4280 conn->proxytype = CURLPROXY_SOCKS4;
4281 /* Any other xxx:// : change to http proxy */
4284 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4286 /* Is there a username and password given in this proxy url? */
4287 atsign = strchr(proxyptr, '@');
4289 CURLcode res = CURLE_OK;
4290 char *proxyuser = NULL;
4291 char *proxypasswd = NULL;
4293 res = parse_login_details(proxyptr, atsign - proxyptr,
4294 &proxyuser, &proxypasswd, NULL);
4296 /* found user and password, rip them out. note that we are
4297 unescaping them, as there is otherwise no way to have a
4298 username or password with reserved characters like ':' in
4300 Curl_safefree(conn->proxyuser);
4301 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4302 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4304 conn->proxyuser = strdup("");
4306 if(!conn->proxyuser)
4307 res = CURLE_OUT_OF_MEMORY;
4309 Curl_safefree(conn->proxypasswd);
4310 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4311 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4313 conn->proxypasswd = strdup("");
4315 if(!conn->proxypasswd)
4316 res = CURLE_OUT_OF_MEMORY;
4320 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4321 atsign++; /* the right side of the @-letter */
4324 proxyptr = atsign; /* now use this instead */
4326 res = CURLE_OUT_OF_MEMORY;
4330 Curl_safefree(proxyuser);
4331 Curl_safefree(proxypasswd);
4337 /* start scanning for port number at this point */
4340 /* detect and extract RFC2732-style IPv6-addresses */
4341 if(*proxyptr == '[') {
4342 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4343 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4347 /* yeps, it ended nicely with a bracket as well */
4350 infof(data, "Invalid IPv6 address format\n");
4352 /* Note that if this didn't end with a bracket, we still advanced the
4353 * proxyptr first, but I can't see anything wrong with that as no host
4354 * name nor a numeric can legally start with a bracket.
4358 /* Get port number off proxy.server.com:1080 */
4359 prox_portno = strchr(portptr, ':');
4361 *prox_portno = 0x0; /* cut off number from host name */
4363 /* now set the local port number */
4364 conn->port = strtol(prox_portno, NULL, 10);
4367 if(proxyptr[0]=='/')
4368 /* If the first character in the proxy string is a slash, fail
4369 immediately. The following code will otherwise clear the string which
4370 will lead to code running as if no proxy was set! */
4371 return CURLE_COULDNT_RESOLVE_PROXY;
4373 /* without a port number after the host name, some people seem to use
4374 a slash so we strip everything from the first slash */
4375 atsign = strchr(proxyptr, '/');
4377 *atsign = 0x0; /* cut off path part from host name */
4379 if(data->set.proxyport)
4380 /* None given in the proxy string, then get the default one if it is
4382 conn->port = data->set.proxyport;
4385 /* now, clone the cleaned proxy host name */
4386 conn->proxy.rawalloc = strdup(proxyptr);
4387 conn->proxy.name = conn->proxy.rawalloc;
4389 if(!conn->proxy.rawalloc)
4390 return CURLE_OUT_OF_MEMORY;
4396 * Extract the user and password from the authentication string
4398 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4399 struct connectdata *conn)
4401 char proxyuser[MAX_CURL_USER_LENGTH]="";
4402 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4404 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4405 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4406 MAX_CURL_USER_LENGTH);
4407 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4409 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4410 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4411 MAX_CURL_PASSWORD_LENGTH);
4412 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4415 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4416 if(!conn->proxyuser)
4417 return CURLE_OUT_OF_MEMORY;
4419 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4420 if(!conn->proxypasswd)
4421 return CURLE_OUT_OF_MEMORY;
4425 #endif /* CURL_DISABLE_PROXY */
4430 * Parse the login details (user name, password and options) from the URL and
4431 * strip them out of the host name
4433 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4436 * Outputs: (almost :- all currently undefined)
4437 * conn->bits.user_passwd - non-zero if non-default passwords exist
4438 * user - non-zero length if defined
4439 * passwd - non-zero length if defined
4440 * options - non-zero length if defined
4441 * conn->host.name - remove user name and password
4443 static CURLcode parse_url_login(struct SessionHandle *data,
4444 struct connectdata *conn,
4445 char **user, char **passwd, char **options)
4447 CURLcode result = CURLE_OK;
4449 char *passwdp = NULL;
4450 char *optionsp = NULL;
4452 /* At this point, we're hoping all the other special cases have
4453 * been taken care of, so conn->host.name is at most
4454 * [user[:password][;options]]@]hostname
4456 * We need somewhere to put the embedded details, so do that first.
4459 char *ptr = strchr(conn->host.name, '@');
4460 char *login = conn->host.name;
4462 DEBUGASSERT(!**user);
4463 DEBUGASSERT(!**passwd);
4464 DEBUGASSERT(!**options);
4469 /* We will now try to extract the
4470 * possible login information in a string like:
4471 * ftp://user:password@ftp.my.site:8021/README */
4472 conn->host.name = ++ptr;
4474 /* So the hostname is sane. Only bother interpreting the
4475 * results if we could care. It could still be wasted
4476 * work because it might be overtaken by the programmatically
4477 * set user/passwd, but doing that first adds more cases here :-(
4480 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4483 /* We could use the login information in the URL so extract it */
4484 result = parse_login_details(login, ptr - login - 1,
4485 &userp, &passwdp, &optionsp);
4486 if(result != CURLE_OK)
4492 /* We have a user in the URL */
4493 conn->bits.userpwd_in_url = TRUE;
4494 conn->bits.user_passwd = TRUE; /* enable user+password */
4496 /* Decode the user */
4497 newname = curl_easy_unescape(data, userp, 0, NULL);
4499 result = CURLE_OUT_OF_MEMORY;
4508 /* We have a password in the URL so decode it */
4509 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4511 result = CURLE_OUT_OF_MEMORY;
4516 *passwd = newpasswd;
4520 /* We have an options list in the URL so decode it */
4521 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4523 result = CURLE_OUT_OF_MEMORY;
4528 *options = newoptions;
4534 Curl_safefree(userp);
4535 Curl_safefree(passwdp);
4536 Curl_safefree(optionsp);
4542 * parse_login_details()
4544 * This is used to parse a login string for user name, password and options in
4545 * the following formats:
4549 * user:password;options
4551 * user;options:password
4559 * login [in] - The login string.
4560 * len [in] - The length of the login string.
4561 * userp [in/out] - The address where a pointer to newly allocated memory
4562 * holding the user will be stored upon completion.
4563 * passdwp [in/out] - The address where a pointer to newly allocated memory
4564 * holding the password will be stored upon completion.
4565 * optionsp [in/out] - The address where a pointer to newly allocated memory
4566 * holding the options will be stored upon completion.
4568 * Returns CURLE_OK on success.
4570 static CURLcode parse_login_details(const char *login, const size_t len,
4571 char **userp, char **passwdp,
4574 CURLcode result = CURLE_OK;
4578 const char *psep = NULL;
4579 const char *osep = NULL;
4584 /* Attempt to find the password separator */
4586 psep = strchr(login, ':');
4588 /* Within the constraint of the login string */
4589 if(psep >= login + len)
4593 /* Attempt to find the options separator */
4595 osep = strchr(login, ';');
4597 /* Within the constraint of the login string */
4598 if(osep >= login + len)
4602 /* Calculate the portion lengths */
4604 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4605 (osep ? (size_t)(osep - login) : len));
4607 (osep && osep > psep ? (size_t)(osep - psep) :
4608 (size_t)(login + len - psep)) - 1 : 0);
4610 (psep && psep > osep ? (size_t)(psep - osep) :
4611 (size_t)(login + len - osep)) - 1 : 0);
4613 /* Allocate the user portion buffer */
4615 ubuf = malloc(ulen + 1);
4617 result = CURLE_OUT_OF_MEMORY;
4620 /* Allocate the password portion buffer */
4621 if(!result && passwdp && plen) {
4622 pbuf = malloc(plen + 1);
4624 Curl_safefree(ubuf);
4625 result = CURLE_OUT_OF_MEMORY;
4629 /* Allocate the options portion buffer */
4630 if(!result && optionsp && olen) {
4631 obuf = malloc(olen + 1);
4633 Curl_safefree(pbuf);
4634 Curl_safefree(ubuf);
4635 result = CURLE_OUT_OF_MEMORY;
4640 /* Store the user portion if necessary */
4642 memcpy(ubuf, login, ulen);
4644 Curl_safefree(*userp);
4648 /* Store the password portion if necessary */
4650 memcpy(pbuf, psep + 1, plen);
4652 Curl_safefree(*passwdp);
4656 /* Store the options portion if necessary */
4658 memcpy(obuf, osep + 1, olen);
4660 Curl_safefree(*optionsp);
4668 /*************************************************************
4669 * Figure out the remote port number and fix it in the URL
4671 * No matter if we use a proxy or not, we have to figure out the remote
4672 * port number of various reasons.
4674 * To be able to detect port number flawlessly, we must not confuse them
4675 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4677 * The conn->host.name is currently [user:passwd@]host[:port] where host
4678 * could be a hostname, IPv4 address or IPv6 address.
4680 * The port number embedded in the URL is replaced, if necessary.
4681 *************************************************************/
4682 static CURLcode parse_remote_port(struct SessionHandle *data,
4683 struct connectdata *conn)
4688 /* Note that at this point, the IPv6 address cannot contain any scope
4689 suffix as that has already been removed in the parseurlandfillconn()
4691 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4693 (']' == endbracket)) {
4694 /* this is a RFC2732-style specified IP-address */
4695 conn->bits.ipv6_ip = TRUE;
4697 conn->host.name++; /* skip over the starting bracket */
4698 portptr = strchr(conn->host.name, ']');
4700 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4702 portptr = NULL; /* no port number available */
4707 struct in6_addr in6;
4708 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4709 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4711 failf(data, "IPv6 numerical address used in URL without brackets");
4712 return CURLE_URL_MALFORMAT;
4716 portptr = strrchr(conn->host.name, ':');
4719 if(data->set.use_port && data->state.allow_port) {
4720 /* if set, we use this and ignore the port possibly given in the URL */
4721 conn->remote_port = (unsigned short)data->set.use_port;
4723 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4724 number - since the port number is to be ignored! */
4725 if(conn->bits.httpproxy) {
4726 /* we need to create new URL with the new port number */
4730 if(conn->bits.type_set)
4731 snprintf(type, sizeof(type), ";type=%c",
4732 data->set.prefer_ascii?'A':
4733 (data->set.ftp_list_only?'D':'I'));
4736 * This synthesized URL isn't always right--suffixes like ;type=A are
4737 * stripped off. It would be better to work directly from the original
4738 * URL and simply replace the port part of it.
4740 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4741 conn->bits.ipv6_ip?"[":"", conn->host.name,
4742 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4743 data->state.slash_removed?"/":"", data->state.path,
4746 return CURLE_OUT_OF_MEMORY;
4748 if(data->change.url_alloc) {
4749 Curl_safefree(data->change.url);
4750 data->change.url_alloc = FALSE;
4753 data->change.url = url;
4754 data->change.url_alloc = TRUE;
4758 /* no CURLOPT_PORT given, extract the one from the URL */
4763 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4765 if(rest != (portptr+1) && *rest == '\0') {
4766 /* The colon really did have only digits after it,
4767 * so it is either a port number or a mistake */
4769 if(port > 0xffff) { /* Single unix standard says port numbers are
4771 failf(data, "Port number too large: %lu", port);
4772 return CURLE_URL_MALFORMAT;
4775 *portptr = '\0'; /* cut off the name there */
4776 conn->remote_port = curlx_ultous(port);
4779 /* Browser behavior adaptation. If there's a colon with no digits after,
4780 just cut off the name there which makes us ignore the colon and just
4781 use the default port. Firefox and Chrome both do that. */
4788 * Override the login details from the URL with that in the CURLOPT_USERPWD
4789 * option or a .netrc file, if applicable.
4791 static CURLcode override_login(struct SessionHandle *data,
4792 struct connectdata *conn,
4793 char **userp, char **passwdp, char **optionsp)
4795 if(data->set.str[STRING_USERNAME]) {
4797 *userp = strdup(data->set.str[STRING_USERNAME]);
4799 return CURLE_OUT_OF_MEMORY;
4802 if(data->set.str[STRING_PASSWORD]) {
4804 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4806 return CURLE_OUT_OF_MEMORY;
4809 if(data->set.str[STRING_OPTIONS]) {
4811 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4813 return CURLE_OUT_OF_MEMORY;
4816 conn->bits.netrc = FALSE;
4817 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4818 if(Curl_parsenetrc(conn->host.name,
4820 data->set.str[STRING_NETRC_FILE])) {
4821 infof(data, "Couldn't find host %s in the "
4822 DOT_CHAR "netrc file; using defaults\n",
4826 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4827 file, so that it is safe to use even if we followed a Location: to a
4828 different host or similar. */
4829 conn->bits.netrc = TRUE;
4831 conn->bits.user_passwd = TRUE; /* enable user+password */
4839 * Set the login details so they're available in the connection
4841 static CURLcode set_login(struct connectdata *conn,
4842 const char *user, const char *passwd,
4843 const char *options)
4845 CURLcode result = CURLE_OK;
4847 /* If our protocol needs a password and we have none, use the defaults */
4848 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4849 /* Store the default user */
4850 conn->user = strdup(CURL_DEFAULT_USER);
4852 /* Store the default password */
4854 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4856 conn->passwd = NULL;
4858 /* This is the default password, so DON'T set conn->bits.user_passwd */
4861 /* Store the user, zero-length if not set */
4862 conn->user = strdup(user);
4864 /* Store the password (only if user is present), zero-length if not set */
4866 conn->passwd = strdup(passwd);
4868 conn->passwd = NULL;
4871 if(!conn->user || !conn->passwd)
4872 result = CURLE_OUT_OF_MEMORY;
4874 /* Store the options, null if not set */
4875 if(!result && options[0]) {
4876 conn->options = strdup(options);
4879 result = CURLE_OUT_OF_MEMORY;
4885 /*************************************************************
4886 * Resolve the address of the server or proxy
4887 *************************************************************/
4888 static CURLcode resolve_server(struct SessionHandle *data,
4889 struct connectdata *conn,
4892 CURLcode result=CURLE_OK;
4893 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4895 /*************************************************************
4896 * Resolve the name of the server or proxy
4897 *************************************************************/
4898 if(conn->bits.reuse)
4899 /* We're reusing the connection - no need to resolve anything, and
4900 fix_hostname() was called already in create_conn() for the re-use
4905 /* this is a fresh connect */
4907 struct Curl_dns_entry *hostaddr;
4909 /* set a pointer to the hostname we display */
4910 fix_hostname(data, conn, &conn->host);
4912 if(!conn->proxy.name || !*conn->proxy.name) {
4913 /* If not connecting via a proxy, extract the port from the URL, if it is
4914 * there, thus overriding any defaults that might have been set above. */
4915 conn->port = conn->remote_port; /* it is the same port */
4917 /* Resolve target host right on */
4918 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4919 &hostaddr, timeout_ms);
4920 if(rc == CURLRESOLV_PENDING)
4923 else if(rc == CURLRESOLV_TIMEDOUT)
4924 result = CURLE_OPERATION_TIMEDOUT;
4926 else if(!hostaddr) {
4927 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4928 result = CURLE_COULDNT_RESOLVE_HOST;
4929 /* don't return yet, we need to clean up the timeout first */
4933 /* This is a proxy that hasn't been resolved yet. */
4935 /* IDN-fix the proxy name */
4936 fix_hostname(data, conn, &conn->proxy);
4939 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4940 &hostaddr, timeout_ms);
4942 if(rc == CURLRESOLV_PENDING)
4945 else if(rc == CURLRESOLV_TIMEDOUT)
4946 result = CURLE_OPERATION_TIMEDOUT;
4948 else if(!hostaddr) {
4949 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4950 result = CURLE_COULDNT_RESOLVE_PROXY;
4951 /* don't return yet, we need to clean up the timeout first */
4954 DEBUGASSERT(conn->dns_entry == NULL);
4955 conn->dns_entry = hostaddr;
4962 * Cleanup the connection just allocated before we can move along and use the
4963 * previously existing one. All relevant data is copied over and old_conn is
4964 * ready for freeing once this function returns.
4966 static void reuse_conn(struct connectdata *old_conn,
4967 struct connectdata *conn)
4969 if(old_conn->proxy.rawalloc)
4970 free(old_conn->proxy.rawalloc);
4972 /* free the SSL config struct from this connection struct as this was
4973 allocated in vain and is targeted for destruction */
4974 Curl_free_ssl_config(&old_conn->ssl_config);
4976 conn->data = old_conn->data;
4978 /* get the user+password information from the old_conn struct since it may
4979 * be new for this request even when we re-use an existing connection */
4980 conn->bits.user_passwd = old_conn->bits.user_passwd;
4981 if(conn->bits.user_passwd) {
4982 /* use the new user name and password though */
4983 Curl_safefree(conn->user);
4984 Curl_safefree(conn->passwd);
4985 conn->user = old_conn->user;
4986 conn->passwd = old_conn->passwd;
4987 old_conn->user = NULL;
4988 old_conn->passwd = NULL;
4991 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4992 if(conn->bits.proxy_user_passwd) {
4993 /* use the new proxy user name and proxy password though */
4994 Curl_safefree(conn->proxyuser);
4995 Curl_safefree(conn->proxypasswd);
4996 conn->proxyuser = old_conn->proxyuser;
4997 conn->proxypasswd = old_conn->proxypasswd;
4998 old_conn->proxyuser = NULL;
4999 old_conn->proxypasswd = NULL;
5002 /* host can change, when doing keepalive with a proxy or if the case is
5003 different this time etc */
5004 Curl_safefree(conn->host.rawalloc);
5005 conn->host=old_conn->host;
5007 /* persist connection info in session handle */
5008 Curl_persistconninfo(conn);
5011 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5013 Curl_safefree(old_conn->user);
5014 Curl_safefree(old_conn->passwd);
5015 Curl_safefree(old_conn->proxyuser);
5016 Curl_safefree(old_conn->proxypasswd);
5017 Curl_safefree(old_conn->localdev);
5019 Curl_llist_destroy(old_conn->send_pipe, NULL);
5020 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5022 old_conn->send_pipe = NULL;
5023 old_conn->recv_pipe = NULL;
5025 Curl_safefree(old_conn->master_buffer);
5029 * create_conn() sets up a new connectdata struct, or re-uses an already
5030 * existing one, and resolves host name.
5032 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5033 * response will be coming asynchronously. If *async is FALSE, the name is
5036 * @param data The sessionhandle pointer
5037 * @param in_connect is set to the next connection data pointer
5038 * @param async is set TRUE when an async DNS resolution is pending
5039 * @see Curl_setup_conn()
5041 * *NOTE* this function assigns the conn->data pointer!
5044 static CURLcode create_conn(struct SessionHandle *data,
5045 struct connectdata **in_connect,
5048 CURLcode result = CURLE_OK;
5049 struct connectdata *conn;
5050 struct connectdata *conn_temp = NULL;
5053 char *passwd = NULL;
5054 char *options = NULL;
5057 bool prot_missing = FALSE;
5058 bool no_connections_available = FALSE;
5060 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5061 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5065 /*************************************************************
5067 *************************************************************/
5069 if(!data->change.url) {
5070 result = CURLE_URL_MALFORMAT;
5074 /* First, split up the current URL in parts so that we can use the
5075 parts for checking against the already present connections. In order
5076 to not have to modify everything at once, we allocate a temporary
5077 connection data struct and fill in for comparison purposes. */
5078 conn = allocate_conn(data);
5081 result = CURLE_OUT_OF_MEMORY;
5085 /* We must set the return variable as soon as possible, so that our
5086 parent can cleanup any possible allocs we may have done before
5090 /* This initing continues below, see the comment "Continue connectdata
5091 * initialization here" */
5093 /***********************************************************
5094 * We need to allocate memory to store the path in. We get the size of the
5095 * full URL to be sure, and we need to make it at least 256 bytes since
5096 * other parts of the code will rely on this fact
5097 ***********************************************************/
5098 #define LEAST_PATH_ALLOC 256
5099 urllen=strlen(data->change.url);
5100 if(urllen < LEAST_PATH_ALLOC)
5101 urllen=LEAST_PATH_ALLOC;
5104 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5105 * 1 - an extra terminating zero
5106 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5109 Curl_safefree(data->state.pathbuffer);
5110 data->state.path = NULL;
5112 data->state.pathbuffer = malloc(urllen+2);
5113 if(NULL == data->state.pathbuffer) {
5114 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5117 data->state.path = data->state.pathbuffer;
5119 conn->host.rawalloc = malloc(urllen+2);
5120 if(NULL == conn->host.rawalloc) {
5121 Curl_safefree(data->state.pathbuffer);
5122 data->state.path = NULL;
5123 result = CURLE_OUT_OF_MEMORY;
5127 conn->host.name = conn->host.rawalloc;
5128 conn->host.name[0] = 0;
5131 passwd = strdup("");
5132 options = strdup("");
5133 if(!user || !passwd || !options) {
5134 result = CURLE_OUT_OF_MEMORY;
5138 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5140 if(result != CURLE_OK)
5143 /*************************************************************
5144 * No protocol part in URL was used, add it!
5145 *************************************************************/
5147 /* We're guessing prefixes here and if we're told to use a proxy or if
5148 we're gonna follow a Location: later or... then we need the protocol
5149 part added so that we have a valid URL. */
5152 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5155 result = CURLE_OUT_OF_MEMORY;
5159 if(data->change.url_alloc) {
5160 Curl_safefree(data->change.url);
5161 data->change.url_alloc = FALSE;
5164 data->change.url = reurl;
5165 data->change.url_alloc = TRUE; /* free this later */
5168 /*************************************************************
5169 * If the protocol can't handle url query strings, then cut
5170 * of the unhandable part
5171 *************************************************************/
5172 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5173 char *path_q_sep = strchr(conn->data->state.path, '?');
5175 /* according to rfc3986, allow the query (?foo=bar)
5176 also on protocols that can't handle it.
5178 cut the string-part after '?'
5181 /* terminate the string */
5186 if(data->set.str[STRING_BEARER]) {
5187 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5188 if(!conn->xoauth2_bearer) {
5189 return CURLE_OUT_OF_MEMORY;
5193 #ifndef CURL_DISABLE_PROXY
5194 /*************************************************************
5195 * Extract the user and password from the authentication string
5196 *************************************************************/
5197 if(conn->bits.proxy_user_passwd) {
5198 result = parse_proxy_auth(data, conn);
5199 if(result != CURLE_OK)
5203 /*************************************************************
5204 * Detect what (if any) proxy to use
5205 *************************************************************/
5206 if(data->set.str[STRING_PROXY]) {
5207 proxy = strdup(data->set.str[STRING_PROXY]);
5208 /* if global proxy is set, this is it */
5210 failf(data, "memory shortage");
5211 result = CURLE_OUT_OF_MEMORY;
5216 if(data->set.str[STRING_NOPROXY] &&
5217 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5219 free(proxy); /* proxy is in exception list */
5224 proxy = detect_proxy(conn);
5226 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5227 free(proxy); /* Don't bother with an empty proxy string or if the
5228 protocol doesn't work with network */
5232 /***********************************************************************
5233 * If this is supposed to use a proxy, we need to figure out the proxy host
5234 * name, proxy type and port number, so that we can re-use an existing
5235 * connection that may exist registered to the same proxy host.
5236 ***********************************************************************/
5238 result = parse_proxy(data, conn, proxy);
5240 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5245 if((conn->proxytype == CURLPROXY_HTTP) ||
5246 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5247 #ifdef CURL_DISABLE_HTTP
5248 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5249 result = CURLE_UNSUPPORTED_PROTOCOL;
5252 /* force this connection's protocol to become HTTP if not already
5253 compatible - if it isn't tunneling through */
5254 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5255 !conn->bits.tunnel_proxy)
5256 conn->handler = &Curl_handler_http;
5258 conn->bits.httpproxy = TRUE;
5262 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5263 conn->bits.proxy = TRUE;
5266 /* we aren't using the proxy after all... */
5267 conn->bits.proxy = FALSE;
5268 conn->bits.httpproxy = FALSE;
5269 conn->bits.proxy_user_passwd = FALSE;
5270 conn->bits.tunnel_proxy = FALSE;
5273 #endif /* CURL_DISABLE_PROXY */
5275 /*************************************************************
5276 * If the protocol is using SSL and HTTP proxy is used, we set
5277 * the tunnel_proxy bit.
5278 *************************************************************/
5279 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5280 conn->bits.tunnel_proxy = TRUE;
5282 /*************************************************************
5283 * Figure out the remote port number and fix it in the URL
5284 *************************************************************/
5285 result = parse_remote_port(data, conn);
5286 if(result != CURLE_OK)
5289 /* Check for overridden login details and set them accordingly so they
5290 they are known when protocol->setup_connection is called! */
5291 result = override_login(data, conn, &user, &passwd, &options);
5292 if(result != CURLE_OK)
5294 result = set_login(conn, user, passwd, options);
5295 if(result != CURLE_OK)
5298 /*************************************************************
5299 * Setup internals depending on protocol. Needs to be done after
5300 * we figured out what/if proxy to use.
5301 *************************************************************/
5302 result = setup_connection_internals(conn);
5303 if(result != CURLE_OK)
5306 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5307 conn->send[FIRSTSOCKET] = Curl_send_plain;
5308 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5309 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5311 /***********************************************************************
5312 * file: is a special case in that it doesn't need a network connection
5313 ***********************************************************************/
5314 #ifndef CURL_DISABLE_FILE
5315 if(conn->handler->flags & PROTOPT_NONETWORK) {
5317 /* this is supposed to be the connect function so we better at least check
5318 that the file is present here! */
5319 DEBUGASSERT(conn->handler->connect_it);
5320 result = conn->handler->connect_it(conn, &done);
5322 /* Setup a "faked" transfer that'll do nothing */
5323 if(CURLE_OK == result) {
5325 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5327 ConnectionStore(data, conn);
5330 * Setup whatever necessary for a resumed transfer
5332 result = setup_range(data);
5334 DEBUGASSERT(conn->handler->done);
5335 /* we ignore the return code for the protocol-specific DONE */
5336 (void)conn->handler->done(conn, result, FALSE);
5340 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5341 -1, NULL); /* no upload */
5344 /* since we skip do_init() */
5351 /* Get a cloned copy of the SSL config situation stored in the
5352 connection struct. But to get this going nicely, we must first make
5353 sure that the strings in the master copy are pointing to the correct
5354 strings in the session handle strings array!
5356 Keep in mind that the pointers in the master copy are pointing to strings
5357 that will be freed as part of the SessionHandle struct, but all cloned
5358 copies will be separately allocated.
5360 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5361 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5362 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5363 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5364 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5365 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5366 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5368 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5369 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5372 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5373 result = CURLE_OUT_OF_MEMORY;
5377 /*************************************************************
5378 * Check the current list of connections to see if we can
5379 * re-use an already existing one or if we have to create a
5381 *************************************************************/
5383 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5384 we only acknowledge this option if this is not a re-used connection
5385 already (which happens due to follow-location or during a HTTP
5386 authentication phase). */
5387 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5390 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5392 /* If we found a reusable connection, we may still want to
5393 open a new connection if we are pipelining. */
5394 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5395 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5397 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5398 conn_temp->connection_id, pipelen);
5400 if(conn_temp->bundle->num_connections < max_host_connections &&
5401 data->state.conn_cache->num_connections < max_total_connections) {
5402 /* We want a new connection anyway */
5405 infof(data, "We can reuse, but we want a new connection anyway\n");
5412 * We already have a connection for this, we got the former connection
5413 * in the conn_temp variable and thus we need to cleanup the one we
5414 * just allocated before we can move along and use the previously
5417 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5418 handle in a multi stack may nick it */
5419 reuse_conn(conn, conn_temp);
5420 free(conn); /* we don't need this anymore */
5424 /* set a pointer to the hostname we display */
5425 fix_hostname(data, conn, &conn->host);
5427 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5428 conn->connection_id,
5429 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5432 /* We have decided that we want a new connection. However, we may not
5433 be able to do that if we have reached the limit of how many
5434 connections we are allowed to open. */
5435 struct connectbundle *bundle;
5437 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5439 if(max_host_connections > 0 && bundle &&
5440 (bundle->num_connections >= max_host_connections)) {
5441 struct connectdata *conn_candidate;
5443 /* The bundle is full. Let's see if we can kill a connection. */
5444 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5446 if(conn_candidate) {
5447 /* Set the connection's owner correctly, then kill it */
5448 conn_candidate->data = data;
5449 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5452 no_connections_available = TRUE;
5455 if(max_total_connections > 0 &&
5456 (data->state.conn_cache->num_connections >= max_total_connections)) {
5457 struct connectdata *conn_candidate;
5459 /* The cache is full. Let's see if we can kill a connection. */
5460 conn_candidate = find_oldest_idle_connection(data);
5462 if(conn_candidate) {
5463 /* Set the connection's owner correctly, then kill it */
5464 conn_candidate->data = data;
5465 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5468 no_connections_available = TRUE;
5472 if(no_connections_available) {
5473 infof(data, "No connections available.\n");
5478 result = CURLE_NO_CONNECTION_AVAILABLE;
5483 * This is a brand new connection, so let's store it in the connection
5486 ConnectionStore(data, conn);
5490 /* Mark the connection as used */
5493 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5497 * Setup whatever necessary for a resumed transfer
5499 result = setup_range(data);
5503 /* Continue connectdata initialization here. */
5506 * Inherit the proper values from the urldata struct AFTER we have arranged
5507 * the persistent connection stuff
5509 conn->fread_func = data->set.fread_func;
5510 conn->fread_in = data->set.in;
5511 conn->seek_func = data->set.seek_func;
5512 conn->seek_client = data->set.seek_client;
5514 /*************************************************************
5515 * Resolve the address of the server or proxy
5516 *************************************************************/
5517 result = resolve_server(data, conn, async);
5521 Curl_safefree(options);
5522 Curl_safefree(passwd);
5523 Curl_safefree(user);
5524 Curl_safefree(proxy);
5528 /* Curl_setup_conn() is called after the name resolve initiated in
5529 * create_conn() is all done.
5531 * Curl_setup_conn() also handles reused connections
5533 * conn->data MUST already have been setup fine (in create_conn)
5536 CURLcode Curl_setup_conn(struct connectdata *conn,
5537 bool *protocol_done)
5539 CURLcode result = CURLE_OK;
5540 struct SessionHandle *data = conn->data;
5542 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5544 if(conn->handler->flags & PROTOPT_NONETWORK) {
5545 /* nothing to setup when not using a network */
5546 *protocol_done = TRUE;
5549 *protocol_done = FALSE; /* default to not done */
5551 /* set proxy_connect_closed to false unconditionally already here since it
5552 is used strictly to provide extra information to a parent function in the
5553 case of proxy CONNECT failures and we must make sure we don't have it
5554 lingering set from a previous invoke */
5555 conn->bits.proxy_connect_closed = FALSE;
5558 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5559 * basically anything through a http proxy we can't limit this based on
5562 if(data->set.str[STRING_USERAGENT]) {
5563 Curl_safefree(conn->allocptr.uagent);
5564 conn->allocptr.uagent =
5565 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5566 if(!conn->allocptr.uagent)
5567 return CURLE_OUT_OF_MEMORY;
5570 data->req.headerbytecount = 0;
5572 #ifdef CURL_DO_LINEEND_CONV
5573 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5574 #endif /* CURL_DO_LINEEND_CONV */
5576 /* set start time here for timeout purposes in the connect procedure, it
5577 is later set again for the progress meter purpose */
5578 conn->now = Curl_tvnow();
5580 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5581 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5582 result = Curl_connecthost(conn, conn->dns_entry);
5587 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5588 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5589 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5590 *protocol_done = TRUE;
5591 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5592 Curl_verboseconnect(conn);
5595 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5596 set this here perhaps a second time */
5600 * This check is quite a hack. We're calling _fsetmode to fix the problem
5601 * with fwrite converting newline characters (you get mangled text files,
5602 * and corrupted binary files when you download to stdout and redirect it to
5606 if((data->set.out)->_handle == NULL) {
5607 _fsetmode(stdout, "b");
5614 CURLcode Curl_connect(struct SessionHandle *data,
5615 struct connectdata **in_connect,
5617 bool *protocol_done)
5621 *asyncp = FALSE; /* assume synchronous resolves by default */
5623 /* call the stuff that needs to be called */
5624 code = create_conn(data, in_connect, asyncp);
5626 if(CURLE_OK == code) {
5628 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5630 *protocol_done = TRUE;
5632 /* DNS resolution is done: that's either because this is a reused
5633 connection, in which case DNS was unnecessary, or because DNS
5634 really did finish already (synch resolver/fast async resolve) */
5635 code = Curl_setup_conn(*in_connect, protocol_done);
5639 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5644 if(code && *in_connect) {
5645 /* We're not allowed to return failure with memory left allocated
5646 in the connectdata struct, free those here */
5647 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5648 *in_connect = NULL; /* return a NULL */
5654 CURLcode Curl_done(struct connectdata **connp,
5655 CURLcode status, /* an error if this is called after an
5656 error was detected */
5660 struct connectdata *conn;
5661 struct SessionHandle *data;
5663 DEBUGASSERT(*connp);
5669 /* Stop if Curl_done() has already been called */
5672 Curl_getoff_all_pipelines(data, conn);
5674 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5675 !data->set.reuse_forbid &&
5677 /* Stop if pipeline is not empty and we do not have to close
5681 conn->bits.done = TRUE; /* called just now! */
5683 /* Cleanup possible redirect junk */
5684 if(data->req.newurl) {
5685 free(data->req.newurl);
5686 data->req.newurl = NULL;
5688 if(data->req.location) {
5689 free(data->req.location);
5690 data->req.location = NULL;
5693 Curl_resolver_cancel(conn);
5695 if(conn->dns_entry) {
5696 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5697 conn->dns_entry = NULL;
5701 case CURLE_ABORTED_BY_CALLBACK:
5702 case CURLE_READ_ERROR:
5703 case CURLE_WRITE_ERROR:
5704 /* When we're aborted due to a callback return code it basically have to
5705 be counted as premature as there is trouble ahead if we don't. We have
5706 many callbacks and protocols work differently, we could potentially do
5707 this more fine-grained in the future. */
5713 /* this calls the protocol-specific function pointer previously set */
5714 if(conn->handler->done)
5715 result = conn->handler->done(conn, status, premature);
5719 if(Curl_pgrsDone(conn) && !result)
5720 result = CURLE_ABORTED_BY_CALLBACK;
5722 /* if the transfer was completed in a paused state there can be buffered
5723 data left to write and then kill */
5724 if(data->state.tempwrite) {
5725 free(data->state.tempwrite);
5726 data->state.tempwrite = NULL;
5729 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5730 forced us to close this no matter what we think.
5732 if conn->bits.close is TRUE, it means that the connection should be
5733 closed in spite of all our efforts to be nice, due to protocol
5734 restrictions in our or the server's end
5736 if premature is TRUE, it means this connection was said to be DONE before
5737 the entire request operation is complete and thus we can't know in what
5738 state it is for re-using, so we're forced to close it. In a perfect world
5739 we can add code that keep track of if we really must close it here or not,
5740 but currently we have no such detail knowledge.
5742 if(data->set.reuse_forbid || conn->bits.close || premature) {
5743 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5745 /* If we had an error already, make sure we return that one. But
5746 if we got a new error, return that. */
5751 /* the connection is no longer in use */
5752 if(ConnectionDone(data, conn)) {
5753 /* remember the most recently used connection */
5754 data->state.lastconnect = conn;
5756 infof(data, "Connection #%ld to host %s left intact\n",
5757 conn->connection_id,
5758 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5761 data->state.lastconnect = NULL;
5764 *connp = NULL; /* to make the caller of this function better detect that
5765 this was either closed or handed over to the connection
5766 cache here, and therefore cannot be used from this point on
5768 Curl_free_request_state(data);
5774 * do_init() inits the readwrite session. This is inited each time (in the DO
5775 * function before the protocol-specific DO functions are invoked) for a
5776 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5777 * nothing in here depends on stuff that are setup dynamically for the
5781 static CURLcode do_init(struct connectdata *conn)
5783 struct SessionHandle *data = conn->data;
5784 struct SingleRequest *k = &data->req;
5786 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5787 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5788 data->state.expect100header = FALSE;
5790 if(data->set.opt_no_body)
5791 /* in HTTP lingo, no body means using the HEAD request... */
5792 data->set.httpreq = HTTPREQ_HEAD;
5793 else if(HTTPREQ_HEAD == data->set.httpreq)
5794 /* ... but if unset there really is no perfect method that is the
5795 "opposite" of HEAD but in reality most people probably think GET
5796 then. The important thing is that we can't let it remain HEAD if the
5797 opt_no_body is set FALSE since then we'll behave wrong when getting
5799 data->set.httpreq = HTTPREQ_GET;
5801 k->start = Curl_tvnow(); /* start time */
5802 k->now = k->start; /* current time is now */
5803 k->header = TRUE; /* assume header */
5807 k->buf = data->state.buffer;
5808 k->uploadbuf = data->state.uploadbuffer;
5809 k->hbufp = data->state.headerbuff;
5810 k->ignorebody=FALSE;
5812 Curl_speedinit(data);
5814 Curl_pgrsSetUploadCounter(data, 0);
5815 Curl_pgrsSetDownloadCounter(data, 0);
5821 * do_complete is called when the DO actions are complete.
5823 * We init chunking and trailer bits to their default values here immediately
5824 * before receiving any header data for the current request in the pipeline.
5826 static void do_complete(struct connectdata *conn)
5828 conn->data->req.chunk=FALSE;
5829 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5830 conn->sockfd:conn->writesockfd)+1;
5831 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5834 CURLcode Curl_do(struct connectdata **connp, bool *done)
5836 CURLcode result=CURLE_OK;
5837 struct connectdata *conn = *connp;
5838 struct SessionHandle *data = conn->data;
5840 if(conn->handler->do_it) {
5841 /* generic protocol-specific function pointer set in curl_connect() */
5842 result = conn->handler->do_it(conn, done);
5844 /* This was formerly done in transfer.c, but we better do it here */
5845 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5847 * If the connection is using an easy handle, call reconnect
5848 * to re-establish the connection. Otherwise, let the multi logic
5849 * figure out how to re-establish the connection.
5852 result = Curl_reconnect_request(connp);
5854 if(result == CURLE_OK) {
5855 /* ... finally back to actually retry the DO phase */
5856 conn = *connp; /* re-assign conn since Curl_reconnect_request
5857 creates a new connection */
5858 result = conn->handler->do_it(conn, done);
5865 if((result == CURLE_OK) && *done)
5866 /* do_complete must be called after the protocol-specific DO function */
5873 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5874 * second stage DO state which (wrongly) was introduced to support FTP's
5875 * second connection.
5877 * TODO: A future libcurl should be able to work away this state.
5879 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5880 * DOING state there's more work to do!
5883 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5885 CURLcode result=CURLE_OK;
5889 if(conn->handler->do_more)
5890 result = conn->handler->do_more(conn, complete);
5892 if(!result && (*complete == 1))
5893 /* do_complete must be called after the protocol-specific DO function */