1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **userptr, char **passwdptr,
149 static CURLcode parse_login_details(const char *login, const size_t len,
150 char **userptr, char **passwdptr,
156 static const struct Curl_handler * const protocols[] = {
158 #ifndef CURL_DISABLE_HTTP
162 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
166 #ifndef CURL_DISABLE_FTP
170 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
174 #ifndef CURL_DISABLE_TELNET
175 &Curl_handler_telnet,
178 #ifndef CURL_DISABLE_DICT
182 #ifndef CURL_DISABLE_LDAP
184 #if !defined(CURL_DISABLE_LDAPS) && \
185 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
186 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
191 #ifndef CURL_DISABLE_FILE
195 #ifndef CURL_DISABLE_TFTP
204 #ifndef CURL_DISABLE_IMAP
211 #ifndef CURL_DISABLE_POP3
218 #ifndef CURL_DISABLE_SMTP
225 #ifndef CURL_DISABLE_RTSP
229 #ifndef CURL_DISABLE_GOPHER
230 &Curl_handler_gopher,
237 &Curl_handler_rtmpte,
239 &Curl_handler_rtmpts,
242 (struct Curl_handler *) NULL
246 * Dummy handler for undefined protocol schemes.
249 static const struct Curl_handler Curl_handler_dummy = {
250 "<no protocol>", /* scheme */
251 ZERO_NULL, /* setup_connection */
252 ZERO_NULL, /* do_it */
253 ZERO_NULL, /* done */
254 ZERO_NULL, /* do_more */
255 ZERO_NULL, /* connect_it */
256 ZERO_NULL, /* connecting */
257 ZERO_NULL, /* doing */
258 ZERO_NULL, /* proto_getsock */
259 ZERO_NULL, /* doing_getsock */
260 ZERO_NULL, /* domore_getsock */
261 ZERO_NULL, /* perform_getsock */
262 ZERO_NULL, /* disconnect */
263 ZERO_NULL, /* readwrite */
266 PROTOPT_NONE /* flags */
269 void Curl_freeset(struct SessionHandle *data)
271 /* Free all dynamic strings stored in the data->set substructure. */
273 for(i=(enum dupstring)0; i < STRING_LAST; i++)
274 Curl_safefree(data->set.str[i]);
276 if(data->change.referer_alloc) {
277 Curl_safefree(data->change.referer);
278 data->change.referer_alloc = FALSE;
280 data->change.referer = NULL;
283 static CURLcode setstropt(char **charp, char *s)
285 /* Release the previous storage at `charp' and replace by a dynamic storage
286 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
288 Curl_safefree(*charp);
294 return CURLE_OUT_OF_MEMORY;
302 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp,
305 CURLcode result = CURLE_OK;
308 char *options = NULL;
310 /* Parse the login details if specified. It not then we treat NULL as a hint
311 to clear the existing data */
313 result = parse_login_details(option, strlen(option),
314 (userp ? &user : NULL),
315 (passwdp ? &passwd : NULL),
316 (optionsp ? &options : NULL));
320 /* Store the username part of option if required */
322 if(!user && option && option[0] == ':') {
323 /* Allocate an empty string instead of returning NULL as user name */
326 result = CURLE_OUT_OF_MEMORY;
329 Curl_safefree(*userp);
333 /* Store the password part of option if required */
335 Curl_safefree(*passwdp);
339 /* Store the options part of option if required */
341 Curl_safefree(*optionsp);
349 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
351 CURLcode r = CURLE_OK;
354 /* Copy src->set into dst->set first, then deal with the strings
358 /* clear all string pointers first */
359 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
361 /* duplicate all strings */
362 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
363 r = setstropt(&dst->set.str[i], src->set.str[i]);
368 /* If a failure occurred, freeing has to be performed externally. */
373 * This is the internal function curl_easy_cleanup() calls. This should
374 * cleanup and free all resources associated with this sessionhandle.
376 * NOTE: if we ever add something that attempts to write to a socket or
377 * similar here, we must ignore SIGPIPE first. It is currently only done
378 * when curl_easy_perform() is invoked.
381 CURLcode Curl_close(struct SessionHandle *data)
383 struct Curl_multi *m;
388 Curl_expire(data, 0); /* shut off timers */
393 /* This handle is still part of a multi handle, take care of this first
394 and detach this handle from there. */
395 curl_multi_remove_handle(data->multi, data);
398 /* when curl_easy_perform() is used, it creates its own multi handle to
399 use and this is the one */
400 curl_multi_cleanup(data->multi_easy);
402 /* Destroy the timeout list that is held in the easy handle. It is
403 /normally/ done by curl_multi_remove_handle() but this is "just in
405 if(data->state.timeoutlist) {
406 Curl_llist_destroy(data->state.timeoutlist, NULL);
407 data->state.timeoutlist = NULL;
410 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
411 the multi handle, since that function uses the magic
414 if(data->state.rangestringalloc)
415 free(data->state.range);
417 /* Free the pathbuffer */
418 Curl_safefree(data->state.pathbuffer);
419 data->state.path = NULL;
421 /* freed here just in case DONE wasn't called */
422 Curl_free_request_state(data);
424 /* Close down all open SSL info and sessions */
425 Curl_ssl_close_all(data);
426 Curl_safefree(data->state.first_host);
427 Curl_safefree(data->state.scratch);
428 Curl_ssl_free_certinfo(data);
430 if(data->change.referer_alloc) {
431 Curl_safefree(data->change.referer);
432 data->change.referer_alloc = FALSE;
434 data->change.referer = NULL;
436 if(data->change.url_alloc) {
437 Curl_safefree(data->change.url);
438 data->change.url_alloc = FALSE;
440 data->change.url = NULL;
442 Curl_safefree(data->state.headerbuff);
444 Curl_flush_cookies(data, 1);
446 Curl_digest_cleanup(data);
448 Curl_safefree(data->info.contenttype);
449 Curl_safefree(data->info.wouldredirect);
451 /* this destroys the channel and we cannot use it anymore after this */
452 Curl_resolver_cleanup(data->state.resolver);
454 Curl_convert_close(data);
456 /* No longer a dirty share, if it exists */
458 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
459 data->share->dirty--;
460 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
469 * Initialize the UserDefined fields within a SessionHandle.
470 * This may be safely called on a new or existing SessionHandle.
472 CURLcode Curl_init_userdefined(struct UserDefined *set)
474 CURLcode res = CURLE_OK;
476 set->out = stdout; /* default output to stdout */
477 set->in = stdin; /* default input from stdin */
478 set->err = stderr; /* default stderr to stderr */
480 /* use fwrite as default function to store output */
481 set->fwrite_func = (curl_write_callback)fwrite;
483 /* use fread as default function to read input */
484 set->fread_func = (curl_read_callback)fread;
485 set->is_fread_set = 0;
486 set->is_fwrite_set = 0;
488 set->seek_func = ZERO_NULL;
489 set->seek_client = ZERO_NULL;
491 /* conversion callbacks for non-ASCII hosts */
492 set->convfromnetwork = ZERO_NULL;
493 set->convtonetwork = ZERO_NULL;
494 set->convfromutf8 = ZERO_NULL;
496 set->infilesize = -1; /* we don't know any size */
497 set->postfieldsize = -1; /* unknown size */
498 set->maxredirs = -1; /* allow any amount by default */
500 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
501 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
502 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
503 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
504 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
505 set->ftp_filemethod = FTPFILE_MULTICWD;
507 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
509 /* Set the default size of the SSL session ID cache */
510 set->ssl.max_ssl_sessions = 5;
512 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
513 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
514 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
515 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
517 /* make libcurl quiet by default: */
518 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
521 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
522 * switched off unless wanted.
524 set->ssl.verifypeer = TRUE;
525 set->ssl.verifyhost = TRUE;
527 set->ssl.authtype = CURL_TLSAUTH_NONE;
529 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
531 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
533 set->new_file_perms = 0644; /* Default permissions */
534 set->new_directory_perms = 0755; /* Default permissions */
536 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
537 define since we internally only use the lower 16 bits for the passed
538 in bitmask to not conflict with the private bits */
539 set->allowed_protocols = CURLPROTO_ALL;
540 set->redir_protocols =
541 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
543 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
545 * disallow unprotected protection negotiation NEC reference implementation
546 * seem not to follow rfc1961 section 4.3/4.4
548 set->socks5_gssapi_nec = FALSE;
549 /* set default gssapi service name */
550 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
551 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
556 /* This is our preferred CA cert bundle/path since install time */
557 #if defined(CURL_CA_BUNDLE)
558 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
559 #elif defined(CURL_CA_PATH)
560 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
563 set->wildcardmatch = FALSE;
564 set->chunk_bgn = ZERO_NULL;
565 set->chunk_end = ZERO_NULL;
567 /* tcp keepalives are disabled by default, but provide reasonable values for
568 * the interval and idle times.
570 set->tcp_keepalive = FALSE;
571 set->tcp_keepintvl = 60;
572 set->tcp_keepidle = 60;
580 * @param curl is a pointer to a sessionhandle pointer that gets set by this
585 CURLcode Curl_open(struct SessionHandle **curl)
587 CURLcode res = CURLE_OK;
588 struct SessionHandle *data;
591 /* Very simple start-up: alloc the struct, init it with zeroes and return */
592 data = calloc(1, sizeof(struct SessionHandle));
594 /* this is a very serious error */
595 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
596 return CURLE_OUT_OF_MEMORY;
599 data->magic = CURLEASY_MAGIC_NUMBER;
601 status = Curl_resolver_init(&data->state.resolver);
603 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
608 /* We do some initial setup here, all those fields that can't be just 0 */
610 data->state.headerbuff = malloc(HEADERSIZE);
611 if(!data->state.headerbuff) {
612 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
613 res = CURLE_OUT_OF_MEMORY;
616 res = Curl_init_userdefined(&data->set);
618 data->state.headersize=HEADERSIZE;
620 Curl_convert_init(data);
622 /* most recent connection is not yet defined */
623 data->state.lastconnect = NULL;
625 data->progress.flags |= PGRS_HIDE;
626 data->state.current_speed = -1; /* init to negative == impossible */
628 data->wildcard.state = CURLWC_INIT;
629 data->wildcard.filelist = NULL;
630 data->set.fnmatch = ZERO_NULL;
631 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
635 Curl_resolver_cleanup(data->state.resolver);
636 if(data->state.headerbuff)
637 free(data->state.headerbuff);
648 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
652 CURLcode result = CURLE_OK;
654 #ifndef CURL_DISABLE_HTTP
659 case CURLOPT_DNS_CACHE_TIMEOUT:
660 data->set.dns_cache_timeout = va_arg(param, long);
662 case CURLOPT_DNS_USE_GLOBAL_CACHE:
663 /* remember we want this enabled */
664 arg = va_arg(param, long);
665 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
667 case CURLOPT_SSL_CIPHER_LIST:
668 /* set a list of cipher we want to use in the SSL connection */
669 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
670 va_arg(param, char *));
673 case CURLOPT_RANDOM_FILE:
675 * This is the path name to a file that contains random data to seed
676 * the random SSL stuff with. The file is only used for reading.
678 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
679 va_arg(param, char *));
681 case CURLOPT_EGDSOCKET:
683 * The Entropy Gathering Daemon socket pathname
685 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
686 va_arg(param, char *));
688 case CURLOPT_MAXCONNECTS:
690 * Set the absolute number of maximum simultaneous alive connection that
691 * libcurl is allowed to have.
693 data->set.maxconnects = va_arg(param, long);
695 case CURLOPT_FORBID_REUSE:
697 * When this transfer is done, it must not be left to be reused by a
698 * subsequent transfer but shall be closed immediately.
700 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
702 case CURLOPT_FRESH_CONNECT:
704 * This transfer shall not use a previously cached connection but
705 * should be made with a fresh new connect!
707 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
709 case CURLOPT_VERBOSE:
711 * Verbose means infof() calls that give a lot of information about
712 * the connection and transfer procedures as well as internal choices.
714 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
718 * Set to include the header in the general data output stream.
720 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
722 case CURLOPT_NOPROGRESS:
724 * Shut off the internal supported progress meter
726 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
727 if(data->set.hide_progress)
728 data->progress.flags |= PGRS_HIDE;
730 data->progress.flags &= ~PGRS_HIDE;
734 * Do not include the body part in the output data stream.
736 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
738 case CURLOPT_FAILONERROR:
740 * Don't output the >=300 error code HTML-page, but instead only
743 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
748 * We want to sent data to the remote host. If this is HTTP, that equals
749 * using the PUT request.
751 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
752 if(data->set.upload) {
753 /* If this is HTTP, PUT is what's needed to "upload" */
754 data->set.httpreq = HTTPREQ_PUT;
755 data->set.opt_no_body = FALSE; /* this is implied */
758 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
759 then this can be changed to HEAD later on) */
760 data->set.httpreq = HTTPREQ_GET;
762 case CURLOPT_FILETIME:
764 * Try to get the file time of the remote document. The time will
765 * later (possibly) become available using curl_easy_getinfo().
767 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
769 case CURLOPT_FTP_CREATE_MISSING_DIRS:
771 * An FTP option that modifies an upload to create missing directories on
774 switch(va_arg(param, long)) {
776 data->set.ftp_create_missing_dirs = 0;
779 data->set.ftp_create_missing_dirs = 1;
782 data->set.ftp_create_missing_dirs = 2;
785 /* reserve other values for future use */
786 result = CURLE_UNKNOWN_OPTION;
790 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
792 * Option that specifies how quickly an server response must be obtained
793 * before it is considered failure. For pingpong protocols.
795 data->set.server_response_timeout = va_arg( param , long ) * 1000;
797 case CURLOPT_TFTP_BLKSIZE:
799 * TFTP option that specifies the block size to use for data transmission
801 data->set.tftp_blksize = va_arg(param, long);
803 case CURLOPT_DIRLISTONLY:
805 * An option that changes the command to one that asks for a list
806 * only, no file info details.
808 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
812 * We want to upload and append to an existing file.
814 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
816 case CURLOPT_FTP_FILEMETHOD:
818 * How do access files over FTP.
820 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
824 * Parse the $HOME/.netrc file
826 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
828 case CURLOPT_NETRC_FILE:
830 * Use this file instead of the $HOME/.netrc file
832 result = setstropt(&data->set.str[STRING_NETRC_FILE],
833 va_arg(param, char *));
835 case CURLOPT_TRANSFERTEXT:
837 * This option was previously named 'FTPASCII'. Renamed to work with
838 * more protocols than merely FTP.
840 * Transfer using ASCII (instead of BINARY).
842 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
844 case CURLOPT_TIMECONDITION:
846 * Set HTTP time condition. This must be one of the defines in the
847 * curl/curl.h header file.
849 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
851 case CURLOPT_TIMEVALUE:
853 * This is the value to compare with the remote document with the
854 * method set with CURLOPT_TIMECONDITION
856 data->set.timevalue = (time_t)va_arg(param, long);
858 case CURLOPT_SSLVERSION:
860 * Set explicit SSL version to try to connect with, as some SSL
861 * implementations are lame.
863 data->set.ssl.version = va_arg(param, long);
866 #ifndef CURL_DISABLE_HTTP
867 case CURLOPT_AUTOREFERER:
869 * Switch on automatic referer that gets set if curl follows locations.
871 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
874 case CURLOPT_ACCEPT_ENCODING:
876 * String to use at the value of Accept-Encoding header.
878 * If the encoding is set to "" we use an Accept-Encoding header that
879 * encompasses all the encodings we support.
880 * If the encoding is set to NULL we don't send an Accept-Encoding header
881 * and ignore an received Content-Encoding header.
884 argptr = va_arg(param, char *);
885 result = setstropt(&data->set.str[STRING_ENCODING],
886 (argptr && !*argptr)?
887 (char *) ALL_CONTENT_ENCODINGS: argptr);
890 case CURLOPT_TRANSFER_ENCODING:
891 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
894 case CURLOPT_FOLLOWLOCATION:
896 * Follow Location: header hints on a HTTP-server.
898 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
901 case CURLOPT_UNRESTRICTED_AUTH:
903 * Send authentication (user+password) when following locations, even when
906 data->set.http_disable_hostname_check_before_authentication =
907 (0 != va_arg(param, long))?TRUE:FALSE;
910 case CURLOPT_MAXREDIRS:
912 * The maximum amount of hops you allow curl to follow Location:
913 * headers. This should mostly be used to detect never-ending loops.
915 data->set.maxredirs = va_arg(param, long);
918 case CURLOPT_POSTREDIR:
921 * Set the behaviour of POST when redirecting
922 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
923 * CURL_REDIR_POST_301 - POST is kept as POST after 301
924 * CURL_REDIR_POST_302 - POST is kept as POST after 302
925 * CURL_REDIR_POST_303 - POST is kept as POST after 303
926 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
927 * other - POST is kept as POST after 301 and 302
929 int postRedir = curlx_sltosi(va_arg(param, long));
930 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
935 /* Does this option serve a purpose anymore? Yes it does, when
936 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
938 if(va_arg(param, long)) {
939 data->set.httpreq = HTTPREQ_POST;
940 data->set.opt_no_body = FALSE; /* this is implied */
943 data->set.httpreq = HTTPREQ_GET;
946 case CURLOPT_COPYPOSTFIELDS:
948 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
949 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
950 * CURLOPT_COPYPOSTFIELDS and not altered later.
952 argptr = va_arg(param, char *);
954 if(!argptr || data->set.postfieldsize == -1)
955 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
958 * Check that requested length does not overflow the size_t type.
961 if((data->set.postfieldsize < 0) ||
962 ((sizeof(curl_off_t) != sizeof(size_t)) &&
963 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
964 result = CURLE_OUT_OF_MEMORY;
968 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
970 /* Allocate even when size == 0. This satisfies the need of possible
971 later address compare to detect the COPYPOSTFIELDS mode, and
972 to mark that postfields is used rather than read function or
975 p = malloc((size_t)(data->set.postfieldsize?
976 data->set.postfieldsize:1));
979 result = CURLE_OUT_OF_MEMORY;
981 if(data->set.postfieldsize)
982 memcpy(p, argptr, (size_t)data->set.postfieldsize);
984 data->set.str[STRING_COPYPOSTFIELDS] = p;
989 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
990 data->set.httpreq = HTTPREQ_POST;
993 case CURLOPT_POSTFIELDS:
995 * Like above, but use static data instead of copying it.
997 data->set.postfields = va_arg(param, void *);
998 /* Release old copied data. */
999 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1000 data->set.httpreq = HTTPREQ_POST;
1003 case CURLOPT_POSTFIELDSIZE:
1005 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1006 * figure it out. Enables binary posts.
1008 bigsize = va_arg(param, long);
1010 if(data->set.postfieldsize < bigsize &&
1011 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1012 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1013 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1014 data->set.postfields = NULL;
1017 data->set.postfieldsize = bigsize;
1020 case CURLOPT_POSTFIELDSIZE_LARGE:
1022 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1023 * figure it out. Enables binary posts.
1025 bigsize = va_arg(param, curl_off_t);
1027 if(data->set.postfieldsize < bigsize &&
1028 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1029 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1030 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1031 data->set.postfields = NULL;
1034 data->set.postfieldsize = bigsize;
1037 case CURLOPT_HTTPPOST:
1039 * Set to make us do HTTP POST
1041 data->set.httppost = va_arg(param, struct curl_httppost *);
1042 data->set.httpreq = HTTPREQ_POST_FORM;
1043 data->set.opt_no_body = FALSE; /* this is implied */
1046 case CURLOPT_REFERER:
1048 * String to set in the HTTP Referer: field.
1050 if(data->change.referer_alloc) {
1051 Curl_safefree(data->change.referer);
1052 data->change.referer_alloc = FALSE;
1054 result = setstropt(&data->set.str[STRING_SET_REFERER],
1055 va_arg(param, char *));
1056 data->change.referer = data->set.str[STRING_SET_REFERER];
1059 case CURLOPT_USERAGENT:
1061 * String to use in the HTTP User-Agent field
1063 result = setstropt(&data->set.str[STRING_USERAGENT],
1064 va_arg(param, char *));
1067 case CURLOPT_HTTPHEADER:
1069 * Set a list with HTTP headers to use (or replace internals with)
1071 data->set.headers = va_arg(param, struct curl_slist *);
1074 case CURLOPT_HTTP200ALIASES:
1076 * Set a list of aliases for HTTP 200 in response header
1078 data->set.http200aliases = va_arg(param, struct curl_slist *);
1081 #if !defined(CURL_DISABLE_COOKIES)
1082 case CURLOPT_COOKIE:
1084 * Cookie string to send to the remote server in the request.
1086 result = setstropt(&data->set.str[STRING_COOKIE],
1087 va_arg(param, char *));
1090 case CURLOPT_COOKIEFILE:
1092 * Set cookie file to read and parse. Can be used multiple times.
1094 argptr = (char *)va_arg(param, void *);
1096 struct curl_slist *cl;
1097 /* append the cookie file name to the list of file names, and deal with
1099 cl = curl_slist_append(data->change.cookielist, argptr);
1101 curl_slist_free_all(data->change.cookielist);
1102 data->change.cookielist = NULL;
1103 return CURLE_OUT_OF_MEMORY;
1105 data->change.cookielist = cl; /* store the list for later use */
1109 case CURLOPT_COOKIEJAR:
1111 * Set cookie file name to dump all cookies to when we're done.
1113 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1114 va_arg(param, char *));
1117 * Activate the cookie parser. This may or may not already
1120 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1121 data->set.cookiesession);
1124 case CURLOPT_COOKIESESSION:
1126 * Set this option to TRUE to start a new "cookie session". It will
1127 * prevent the forthcoming read-cookies-from-file actions to accept
1128 * cookies that are marked as being session cookies, as they belong to a
1131 * In the original Netscape cookie spec, "session cookies" are cookies
1132 * with no expire date set. RFC2109 describes the same action if no
1133 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1134 * a 'Discard' action that can enforce the discard even for cookies that
1137 * We run mostly with the original cookie spec, as hardly anyone implements
1140 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1143 case CURLOPT_COOKIELIST:
1144 argptr = va_arg(param, char *);
1149 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1151 if(Curl_raw_equal(argptr, "ALL")) {
1152 /* clear all cookies */
1153 Curl_cookie_clearall(data->cookies);
1155 else if(Curl_raw_equal(argptr, "SESS")) {
1156 /* clear session cookies */
1157 Curl_cookie_clearsess(data->cookies);
1159 else if(Curl_raw_equal(argptr, "FLUSH")) {
1160 /* flush cookies to file */
1161 Curl_flush_cookies(data, 0);
1165 /* if cookie engine was not running, activate it */
1166 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1168 argptr = strdup(argptr);
1170 result = CURLE_OUT_OF_MEMORY;
1174 if(checkprefix("Set-Cookie:", argptr))
1175 /* HTTP Header format line */
1176 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1179 /* Netscape format line */
1180 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1185 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1188 #endif /* CURL_DISABLE_COOKIES */
1190 case CURLOPT_HTTPGET:
1192 * Set to force us do HTTP GET
1194 if(va_arg(param, long)) {
1195 data->set.httpreq = HTTPREQ_GET;
1196 data->set.upload = FALSE; /* switch off upload */
1197 data->set.opt_no_body = FALSE; /* this is implied */
1201 case CURLOPT_HTTP_VERSION:
1203 * This sets a requested HTTP version to be used. The value is one of
1204 * the listed enums in curl/curl.h.
1206 data->set.httpversion = va_arg(param, long);
1209 case CURLOPT_HTTPAUTH:
1211 * Set HTTP Authentication type BITMASK.
1216 unsigned long auth = va_arg(param, unsigned long);
1218 if(auth == CURLAUTH_NONE) {
1219 data->set.httpauth = auth;
1223 /* the DIGEST_IE bit is only used to set a special marker, for all the
1224 rest we need to handle it as normal DIGEST */
1225 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1227 if(auth & CURLAUTH_DIGEST_IE) {
1228 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1229 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1232 /* switch off bits we can't support */
1234 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1235 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1236 #elif !defined(NTLM_WB_ENABLED)
1237 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1239 #ifndef USE_HTTP_NEGOTIATE
1240 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1244 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1247 while(bitcheck < 31) {
1248 if(auth & (1UL << bitcheck++)) {
1254 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1256 data->set.httpauth = auth;
1260 #endif /* CURL_DISABLE_HTTP */
1262 case CURLOPT_CUSTOMREQUEST:
1264 * Set a custom string to use as request
1266 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1267 va_arg(param, char *));
1270 data->set.httpreq = HTTPREQ_CUSTOM;
1271 here, we continue as if we were using the already set type
1272 and this just changes the actual request keyword */
1275 #ifndef CURL_DISABLE_PROXY
1276 case CURLOPT_HTTPPROXYTUNNEL:
1278 * Tunnel operations through the proxy instead of normal proxy use
1280 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1283 case CURLOPT_PROXYPORT:
1285 * Explicitly set HTTP proxy port number.
1287 data->set.proxyport = va_arg(param, long);
1290 case CURLOPT_PROXYAUTH:
1292 * Set HTTP Authentication type BITMASK.
1297 unsigned long auth = va_arg(param, unsigned long);
1299 if(auth == CURLAUTH_NONE) {
1300 data->set.proxyauth = auth;
1304 /* the DIGEST_IE bit is only used to set a special marker, for all the
1305 rest we need to handle it as normal DIGEST */
1306 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1308 if(auth & CURLAUTH_DIGEST_IE) {
1309 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1310 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1312 /* switch off bits we can't support */
1314 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1315 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1316 #elif !defined(NTLM_WB_ENABLED)
1317 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1319 #ifndef USE_HTTP_NEGOTIATE
1320 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1324 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1327 while(bitcheck < 31) {
1328 if(auth & (1UL << bitcheck++)) {
1334 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1336 data->set.proxyauth = auth;
1342 * Set proxy server:port to use as HTTP proxy.
1344 * If the proxy is set to "" we explicitly say that we don't want to use a
1345 * proxy (even though there might be environment variables saying so).
1347 * Setting it to NULL, means no proxy but allows the environment variables
1350 result = setstropt(&data->set.str[STRING_PROXY],
1351 va_arg(param, char *));
1354 case CURLOPT_PROXYTYPE:
1356 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1358 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1361 case CURLOPT_PROXY_TRANSFER_MODE:
1363 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1365 switch (va_arg(param, long)) {
1367 data->set.proxy_transfer_mode = FALSE;
1370 data->set.proxy_transfer_mode = TRUE;
1373 /* reserve other values for future use */
1374 result = CURLE_UNKNOWN_OPTION;
1378 #endif /* CURL_DISABLE_PROXY */
1380 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1381 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1383 * Set gssapi service name
1385 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1386 va_arg(param, char *));
1389 case CURLOPT_SOCKS5_GSSAPI_NEC:
1391 * set flag for nec socks5 support
1393 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1397 case CURLOPT_WRITEHEADER:
1399 * Custom pointer to pass the header write callback function
1401 data->set.writeheader = (void *)va_arg(param, void *);
1403 case CURLOPT_ERRORBUFFER:
1405 * Error buffer provided by the caller to get the human readable
1408 data->set.errorbuffer = va_arg(param, char *);
1412 * FILE pointer to write to. Or possibly
1413 * used as argument to the write callback.
1415 data->set.out = va_arg(param, void *);
1417 case CURLOPT_FTPPORT:
1419 * Use FTP PORT, this also specifies which IP address to use
1421 result = setstropt(&data->set.str[STRING_FTPPORT],
1422 va_arg(param, char *));
1423 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1427 case CURLOPT_FTP_USE_EPRT:
1428 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1431 case CURLOPT_FTP_USE_EPSV:
1432 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1435 case CURLOPT_FTP_USE_PRET:
1436 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1439 case CURLOPT_FTP_SSL_CCC:
1440 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1443 case CURLOPT_FTP_SKIP_PASV_IP:
1445 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1446 * bypass of the IP address in PASV responses.
1448 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1451 case CURLOPT_INFILE:
1453 * FILE pointer to read the file to be uploaded from. Or possibly
1454 * used as argument to the read callback.
1456 data->set.in = va_arg(param, void *);
1458 case CURLOPT_INFILESIZE:
1460 * If known, this should inform curl about the file size of the
1461 * to-be-uploaded file.
1463 data->set.infilesize = va_arg(param, long);
1465 case CURLOPT_INFILESIZE_LARGE:
1467 * If known, this should inform curl about the file size of the
1468 * to-be-uploaded file.
1470 data->set.infilesize = va_arg(param, curl_off_t);
1472 case CURLOPT_LOW_SPEED_LIMIT:
1474 * The low speed limit that if transfers are below this for
1475 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1477 data->set.low_speed_limit=va_arg(param, long);
1479 case CURLOPT_MAX_SEND_SPEED_LARGE:
1481 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1482 * bytes per second the transfer is throttled..
1484 data->set.max_send_speed=va_arg(param, curl_off_t);
1486 case CURLOPT_MAX_RECV_SPEED_LARGE:
1488 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1489 * second the transfer is throttled..
1491 data->set.max_recv_speed=va_arg(param, curl_off_t);
1493 case CURLOPT_LOW_SPEED_TIME:
1495 * The low speed time that if transfers are below the set
1496 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1498 data->set.low_speed_time=va_arg(param, long);
1504 if(data->change.url_alloc) {
1505 /* the already set URL is allocated, free it first! */
1506 Curl_safefree(data->change.url);
1507 data->change.url_alloc = FALSE;
1509 result = setstropt(&data->set.str[STRING_SET_URL],
1510 va_arg(param, char *));
1511 data->change.url = data->set.str[STRING_SET_URL];
1515 * The port number to use when getting the URL
1517 data->set.use_port = va_arg(param, long);
1519 case CURLOPT_TIMEOUT:
1521 * The maximum time you allow curl to use for a single transfer
1524 data->set.timeout = va_arg(param, long) * 1000L;
1527 case CURLOPT_TIMEOUT_MS:
1528 data->set.timeout = va_arg(param, long);
1531 case CURLOPT_CONNECTTIMEOUT:
1533 * The maximum time you allow curl to use to connect.
1535 data->set.connecttimeout = va_arg(param, long) * 1000L;
1538 case CURLOPT_CONNECTTIMEOUT_MS:
1539 data->set.connecttimeout = va_arg(param, long);
1542 case CURLOPT_ACCEPTTIMEOUT_MS:
1544 * The maximum time you allow curl to wait for server connect
1546 data->set.accepttimeout = va_arg(param, long);
1549 case CURLOPT_USERPWD:
1551 * user:password;options to use in the operation
1553 result = setstropt_userpwd(va_arg(param, char *),
1554 &data->set.str[STRING_USERNAME],
1555 &data->set.str[STRING_PASSWORD],
1556 &data->set.str[STRING_OPTIONS]);
1558 case CURLOPT_USERNAME:
1560 * authentication user name to use in the operation
1562 result = setstropt(&data->set.str[STRING_USERNAME],
1563 va_arg(param, char *));
1565 case CURLOPT_PASSWORD:
1567 * authentication password to use in the operation
1569 result = setstropt(&data->set.str[STRING_PASSWORD],
1570 va_arg(param, char *));
1572 case CURLOPT_POSTQUOTE:
1574 * List of RAW FTP commands to use after a transfer
1576 data->set.postquote = va_arg(param, struct curl_slist *);
1578 case CURLOPT_PREQUOTE:
1580 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1582 data->set.prequote = va_arg(param, struct curl_slist *);
1586 * List of RAW FTP commands to use before a transfer
1588 data->set.quote = va_arg(param, struct curl_slist *);
1590 case CURLOPT_RESOLVE:
1592 * List of NAME:[address] names to populate the DNS cache with
1593 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1595 * Names added with this API will remain in the cache until explicitly
1596 * removed or the handle is cleaned up.
1598 * This API can remove any name from the DNS cache, but only entries
1599 * that aren't actually in use right now will be pruned immediately.
1601 data->set.resolve = va_arg(param, struct curl_slist *);
1602 data->change.resolve = data->set.resolve;
1604 case CURLOPT_PROGRESSFUNCTION:
1606 * Progress callback function
1608 data->set.fprogress = va_arg(param, curl_progress_callback);
1609 if(data->set.fprogress)
1610 data->progress.callback = TRUE; /* no longer internal */
1612 data->progress.callback = FALSE; /* NULL enforces internal */
1615 case CURLOPT_XFERINFOFUNCTION:
1617 * Transfer info callback function
1619 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1620 if(data->set.fxferinfo)
1621 data->progress.callback = TRUE; /* no longer internal */
1623 data->progress.callback = FALSE; /* NULL enforces internal */
1627 case CURLOPT_PROGRESSDATA:
1629 * Custom client data to pass to the progress callback
1631 data->set.progress_client = va_arg(param, void *);
1634 #ifndef CURL_DISABLE_PROXY
1635 case CURLOPT_PROXYUSERPWD:
1637 * user:password needed to use the proxy
1639 result = setstropt_userpwd(va_arg(param, char *),
1640 &data->set.str[STRING_PROXYUSERNAME],
1641 &data->set.str[STRING_PROXYPASSWORD], NULL);
1643 case CURLOPT_PROXYUSERNAME:
1645 * authentication user name to use in the operation
1647 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1648 va_arg(param, char *));
1650 case CURLOPT_PROXYPASSWORD:
1652 * authentication password to use in the operation
1654 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1655 va_arg(param, char *));
1657 case CURLOPT_NOPROXY:
1659 * proxy exception list
1661 result = setstropt(&data->set.str[STRING_NOPROXY],
1662 va_arg(param, char *));
1668 * What range of the file you want to transfer
1670 result = setstropt(&data->set.str[STRING_SET_RANGE],
1671 va_arg(param, char *));
1673 case CURLOPT_RESUME_FROM:
1675 * Resume transfer at the give file position
1677 data->set.set_resume_from = va_arg(param, long);
1679 case CURLOPT_RESUME_FROM_LARGE:
1681 * Resume transfer at the give file position
1683 data->set.set_resume_from = va_arg(param, curl_off_t);
1685 case CURLOPT_DEBUGFUNCTION:
1687 * stderr write callback.
1689 data->set.fdebug = va_arg(param, curl_debug_callback);
1691 * if the callback provided is NULL, it'll use the default callback
1694 case CURLOPT_DEBUGDATA:
1696 * Set to a void * that should receive all error writes. This
1697 * defaults to CURLOPT_STDERR for normal operations.
1699 data->set.debugdata = va_arg(param, void *);
1701 case CURLOPT_STDERR:
1703 * Set to a FILE * that should receive all error writes. This
1704 * defaults to stderr for normal operations.
1706 data->set.err = va_arg(param, FILE *);
1708 data->set.err = stderr;
1710 case CURLOPT_HEADERFUNCTION:
1712 * Set header write callback
1714 data->set.fwrite_header = va_arg(param, curl_write_callback);
1716 case CURLOPT_WRITEFUNCTION:
1718 * Set data write callback
1720 data->set.fwrite_func = va_arg(param, curl_write_callback);
1721 if(!data->set.fwrite_func) {
1722 data->set.is_fwrite_set = 0;
1723 /* When set to NULL, reset to our internal default function */
1724 data->set.fwrite_func = (curl_write_callback)fwrite;
1727 data->set.is_fwrite_set = 1;
1729 case CURLOPT_READFUNCTION:
1731 * Read data callback
1733 data->set.fread_func = va_arg(param, curl_read_callback);
1734 if(!data->set.fread_func) {
1735 data->set.is_fread_set = 0;
1736 /* When set to NULL, reset to our internal default function */
1737 data->set.fread_func = (curl_read_callback)fread;
1740 data->set.is_fread_set = 1;
1742 case CURLOPT_SEEKFUNCTION:
1744 * Seek callback. Might be NULL.
1746 data->set.seek_func = va_arg(param, curl_seek_callback);
1748 case CURLOPT_SEEKDATA:
1750 * Seek control callback. Might be NULL.
1752 data->set.seek_client = va_arg(param, void *);
1754 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1756 * "Convert from network encoding" callback
1758 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1760 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1762 * "Convert to network encoding" callback
1764 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1766 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1768 * "Convert from UTF-8 encoding" callback
1770 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1772 case CURLOPT_IOCTLFUNCTION:
1774 * I/O control callback. Might be NULL.
1776 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1778 case CURLOPT_IOCTLDATA:
1780 * I/O control data pointer. Might be NULL.
1782 data->set.ioctl_client = va_arg(param, void *);
1784 case CURLOPT_SSLCERT:
1786 * String that holds file name of the SSL certificate to use
1788 result = setstropt(&data->set.str[STRING_CERT],
1789 va_arg(param, char *));
1791 case CURLOPT_SSLCERTTYPE:
1793 * String that holds file type of the SSL certificate to use
1795 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1796 va_arg(param, char *));
1798 case CURLOPT_SSLKEY:
1800 * String that holds file name of the SSL key to use
1802 result = setstropt(&data->set.str[STRING_KEY],
1803 va_arg(param, char *));
1805 case CURLOPT_SSLKEYTYPE:
1807 * String that holds file type of the SSL key to use
1809 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1810 va_arg(param, char *));
1812 case CURLOPT_KEYPASSWD:
1814 * String that holds the SSL or SSH private key password.
1816 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1817 va_arg(param, char *));
1819 case CURLOPT_SSLENGINE:
1821 * String that holds the SSL crypto engine.
1823 argptr = va_arg(param, char *);
1824 if(argptr && argptr[0])
1825 result = Curl_ssl_set_engine(data, argptr);
1828 case CURLOPT_SSLENGINE_DEFAULT:
1830 * flag to set engine as default.
1832 result = Curl_ssl_set_engine_default(data);
1836 * Kludgy option to enable CRLF conversions. Subject for removal.
1838 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1841 case CURLOPT_INTERFACE:
1843 * Set what interface or address/hostname to bind the socket to when
1844 * performing an operation and thus what from-IP your connection will use.
1846 result = setstropt(&data->set.str[STRING_DEVICE],
1847 va_arg(param, char *));
1849 case CURLOPT_LOCALPORT:
1851 * Set what local port to bind the socket to when performing an operation.
1853 data->set.localport = curlx_sltous(va_arg(param, long));
1855 case CURLOPT_LOCALPORTRANGE:
1857 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1859 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1861 case CURLOPT_KRBLEVEL:
1863 * A string that defines the kerberos security level.
1865 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1866 va_arg(param, char *));
1867 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1869 case CURLOPT_GSSAPI_DELEGATION:
1871 * GSSAPI credential delegation
1873 data->set.gssapi_delegation = va_arg(param, long);
1875 case CURLOPT_SSL_VERIFYPEER:
1877 * Enable peer SSL verifying.
1879 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1881 case CURLOPT_SSL_VERIFYHOST:
1883 * Enable verification of the host name in the peer certificate
1885 arg = va_arg(param, long);
1887 /* Obviously people are not reading documentation and too many thought
1888 this argument took a boolean when it wasn't and misused it. We thus ban
1889 1 as a sensible input and we warn about its use. Then we only have the
1890 2 action internally stored as TRUE. */
1893 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1894 return CURLE_BAD_FUNCTION_ARGUMENT;
1897 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1900 /* since these two options are only possible to use on an OpenSSL-
1901 powered libcurl we #ifdef them on this condition so that libcurls
1902 built against other SSL libs will return a proper error when trying
1903 to set this option! */
1904 case CURLOPT_SSL_CTX_FUNCTION:
1906 * Set a SSL_CTX callback
1908 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1910 case CURLOPT_SSL_CTX_DATA:
1912 * Set a SSL_CTX callback parameter pointer
1914 data->set.ssl.fsslctxp = va_arg(param, void *);
1917 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT)
1918 case CURLOPT_CERTINFO:
1919 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1922 case CURLOPT_CAINFO:
1924 * Set CA info for SSL connection. Specify file name of the CA certificate
1926 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1927 va_arg(param, char *));
1929 case CURLOPT_CAPATH:
1931 * Set CA path info for SSL connection. Specify directory name of the CA
1932 * certificates which have been prepared using openssl c_rehash utility.
1934 /* This does not work on windows. */
1935 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1936 va_arg(param, char *));
1938 case CURLOPT_CRLFILE:
1940 * Set CRL file info for SSL connection. Specify file name of the CRL
1941 * to check certificates revocation
1943 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1944 va_arg(param, char *));
1946 case CURLOPT_ISSUERCERT:
1948 * Set Issuer certificate file
1949 * to check certificates issuer
1951 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1952 va_arg(param, char *));
1954 case CURLOPT_TELNETOPTIONS:
1956 * Set a linked list of telnet options
1958 data->set.telnet_options = va_arg(param, struct curl_slist *);
1961 case CURLOPT_BUFFERSIZE:
1963 * The application kindly asks for a differently sized receive buffer.
1964 * If it seems reasonable, we'll use it.
1966 data->set.buffer_size = va_arg(param, long);
1968 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1969 (data->set.buffer_size < 1))
1970 data->set.buffer_size = 0; /* huge internal default */
1974 case CURLOPT_NOSIGNAL:
1976 * The application asks not to set any signal() or alarm() handlers,
1977 * even when using a timeout.
1979 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
1984 struct Curl_share *set;
1985 set = va_arg(param, struct Curl_share *);
1987 /* disconnect from old share, if any */
1989 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
1991 if(data->dns.hostcachetype == HCACHE_SHARED) {
1992 data->dns.hostcache = NULL;
1993 data->dns.hostcachetype = HCACHE_NONE;
1996 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
1997 if(data->share->cookies == data->cookies)
1998 data->cookies = NULL;
2001 if(data->share->sslsession == data->state.session)
2002 data->state.session = NULL;
2004 data->share->dirty--;
2006 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2010 /* use new share if it set */
2014 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2016 data->share->dirty++;
2018 if(data->share->hostcache) {
2019 /* use shared host cache */
2020 data->dns.hostcache = data->share->hostcache;
2021 data->dns.hostcachetype = HCACHE_SHARED;
2023 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2024 if(data->share->cookies) {
2025 /* use shared cookie list, first free own one if any */
2027 Curl_cookie_cleanup(data->cookies);
2028 /* enable cookies since we now use a share that uses cookies! */
2029 data->cookies = data->share->cookies;
2031 #endif /* CURL_DISABLE_HTTP */
2032 if(data->share->sslsession) {
2033 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2034 data->state.session = data->share->sslsession;
2036 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2039 /* check for host cache not needed,
2040 * it will be done by curl_easy_perform */
2044 case CURLOPT_PRIVATE:
2046 * Set private data pointer.
2048 data->set.private_data = va_arg(param, void *);
2051 case CURLOPT_MAXFILESIZE:
2053 * Set the maximum size of a file to download.
2055 data->set.max_filesize = va_arg(param, long);
2059 case CURLOPT_USE_SSL:
2061 * Make transfers attempt to use SSL/TLS.
2063 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2066 case CURLOPT_SSL_OPTIONS:
2067 arg = va_arg(param, long);
2068 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2072 case CURLOPT_FTPSSLAUTH:
2074 * Set a specific auth for FTP-SSL transfers.
2076 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2079 case CURLOPT_IPRESOLVE:
2080 data->set.ipver = va_arg(param, long);
2083 case CURLOPT_MAXFILESIZE_LARGE:
2085 * Set the maximum size of a file to download.
2087 data->set.max_filesize = va_arg(param, curl_off_t);
2090 case CURLOPT_TCP_NODELAY:
2092 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2095 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2098 case CURLOPT_FTP_ACCOUNT:
2099 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2100 va_arg(param, char *));
2103 case CURLOPT_IGNORE_CONTENT_LENGTH:
2104 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2107 case CURLOPT_CONNECT_ONLY:
2109 * No data transfer, set up connection and let application use the socket
2111 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2114 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2115 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2116 va_arg(param, char *));
2119 case CURLOPT_SOCKOPTFUNCTION:
2121 * socket callback function: called after socket() but before connect()
2123 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2126 case CURLOPT_SOCKOPTDATA:
2128 * socket callback data pointer. Might be NULL.
2130 data->set.sockopt_client = va_arg(param, void *);
2133 case CURLOPT_OPENSOCKETFUNCTION:
2135 * open/create socket callback function: called instead of socket(),
2138 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2141 case CURLOPT_OPENSOCKETDATA:
2143 * socket callback data pointer. Might be NULL.
2145 data->set.opensocket_client = va_arg(param, void *);
2148 case CURLOPT_CLOSESOCKETFUNCTION:
2150 * close socket callback function: called instead of close()
2151 * when shutting down a connection
2153 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2156 case CURLOPT_CLOSESOCKETDATA:
2158 * socket callback data pointer. Might be NULL.
2160 data->set.closesocket_client = va_arg(param, void *);
2163 case CURLOPT_SSL_SESSIONID_CACHE:
2164 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2168 /* we only include SSH options if explicitly built to support SSH */
2169 case CURLOPT_SSH_AUTH_TYPES:
2170 data->set.ssh_auth_types = va_arg(param, long);
2173 case CURLOPT_SSH_PUBLIC_KEYFILE:
2175 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2177 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2178 va_arg(param, char *));
2181 case CURLOPT_SSH_PRIVATE_KEYFILE:
2183 * Use this file instead of the $HOME/.ssh/id_dsa file
2185 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2186 va_arg(param, char *));
2188 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2190 * Option to allow for the MD5 of the host public key to be checked
2191 * for validation purposes.
2193 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2194 va_arg(param, char *));
2196 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2197 case CURLOPT_SSH_KNOWNHOSTS:
2199 * Store the file name to read known hosts from.
2201 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2202 va_arg(param, char *));
2205 case CURLOPT_SSH_KEYFUNCTION:
2206 /* setting to NULL is fine since the ssh.c functions themselves will
2207 then rever to use the internal default */
2208 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2211 case CURLOPT_SSH_KEYDATA:
2213 * Custom client data to pass to the SSH keyfunc callback
2215 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2217 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2219 #endif /* USE_LIBSSH2 */
2221 case CURLOPT_HTTP_TRANSFER_DECODING:
2223 * disable libcurl transfer encoding is used
2225 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2228 case CURLOPT_HTTP_CONTENT_DECODING:
2230 * raw data passed to the application when content encoding is used
2232 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2235 case CURLOPT_NEW_FILE_PERMS:
2237 * Uses these permissions instead of 0644
2239 data->set.new_file_perms = va_arg(param, long);
2242 case CURLOPT_NEW_DIRECTORY_PERMS:
2244 * Uses these permissions instead of 0755
2246 data->set.new_directory_perms = va_arg(param, long);
2249 case CURLOPT_ADDRESS_SCOPE:
2251 * We always get longs when passed plain numericals, but for this value we
2252 * know that an unsigned int will always hold the value so we blindly
2253 * typecast to this type
2255 data->set.scope = curlx_sltoui(va_arg(param, long));
2258 case CURLOPT_PROTOCOLS:
2259 /* set the bitmask for the protocols that are allowed to be used for the
2260 transfer, which thus helps the app which takes URLs from users or other
2261 external inputs and want to restrict what protocol(s) to deal
2262 with. Defaults to CURLPROTO_ALL. */
2263 data->set.allowed_protocols = va_arg(param, long);
2266 case CURLOPT_REDIR_PROTOCOLS:
2267 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2268 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2269 to be set in both bitmasks to be allowed to get redirected to. Defaults
2270 to all protocols except FILE and SCP. */
2271 data->set.redir_protocols = va_arg(param, long);
2274 case CURLOPT_MAIL_FROM:
2275 /* Set the SMTP mail originator */
2276 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2277 va_arg(param, char *));
2280 case CURLOPT_MAIL_AUTH:
2281 /* Set the SMTP auth originator */
2282 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2283 va_arg(param, char *));
2286 case CURLOPT_MAIL_RCPT:
2287 /* Set the list of mail recipients */
2288 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2291 case CURLOPT_SASL_IR:
2292 /* Enable/disable SASL initial response */
2293 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2296 case CURLOPT_RTSP_REQUEST:
2299 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2300 * Would this be better if the RTSPREQ_* were just moved into here?
2302 long curl_rtspreq = va_arg(param, long);
2303 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2304 switch(curl_rtspreq) {
2305 case CURL_RTSPREQ_OPTIONS:
2306 rtspreq = RTSPREQ_OPTIONS;
2309 case CURL_RTSPREQ_DESCRIBE:
2310 rtspreq = RTSPREQ_DESCRIBE;
2313 case CURL_RTSPREQ_ANNOUNCE:
2314 rtspreq = RTSPREQ_ANNOUNCE;
2317 case CURL_RTSPREQ_SETUP:
2318 rtspreq = RTSPREQ_SETUP;
2321 case CURL_RTSPREQ_PLAY:
2322 rtspreq = RTSPREQ_PLAY;
2325 case CURL_RTSPREQ_PAUSE:
2326 rtspreq = RTSPREQ_PAUSE;
2329 case CURL_RTSPREQ_TEARDOWN:
2330 rtspreq = RTSPREQ_TEARDOWN;
2333 case CURL_RTSPREQ_GET_PARAMETER:
2334 rtspreq = RTSPREQ_GET_PARAMETER;
2337 case CURL_RTSPREQ_SET_PARAMETER:
2338 rtspreq = RTSPREQ_SET_PARAMETER;
2341 case CURL_RTSPREQ_RECORD:
2342 rtspreq = RTSPREQ_RECORD;
2345 case CURL_RTSPREQ_RECEIVE:
2346 rtspreq = RTSPREQ_RECEIVE;
2349 rtspreq = RTSPREQ_NONE;
2352 data->set.rtspreq = rtspreq;
2357 case CURLOPT_RTSP_SESSION_ID:
2359 * Set the RTSP Session ID manually. Useful if the application is
2360 * resuming a previously established RTSP session
2362 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2363 va_arg(param, char *));
2366 case CURLOPT_RTSP_STREAM_URI:
2368 * Set the Stream URI for the RTSP request. Unless the request is
2369 * for generic server options, the application will need to set this.
2371 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2372 va_arg(param, char *));
2375 case CURLOPT_RTSP_TRANSPORT:
2377 * The content of the Transport: header for the RTSP request
2379 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2380 va_arg(param, char *));
2383 case CURLOPT_RTSP_CLIENT_CSEQ:
2385 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2386 * application is resuming a previously broken connection. The CSEQ
2387 * will increment from this new number henceforth.
2389 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2392 case CURLOPT_RTSP_SERVER_CSEQ:
2393 /* Same as the above, but for server-initiated requests */
2394 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2397 case CURLOPT_INTERLEAVEDATA:
2398 data->set.rtp_out = va_arg(param, void *);
2400 case CURLOPT_INTERLEAVEFUNCTION:
2401 /* Set the user defined RTP write function */
2402 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2405 case CURLOPT_WILDCARDMATCH:
2406 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2408 case CURLOPT_CHUNK_BGN_FUNCTION:
2409 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2411 case CURLOPT_CHUNK_END_FUNCTION:
2412 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2414 case CURLOPT_FNMATCH_FUNCTION:
2415 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2417 case CURLOPT_CHUNK_DATA:
2418 data->wildcard.customptr = va_arg(param, void *);
2420 case CURLOPT_FNMATCH_DATA:
2421 data->set.fnmatch_data = va_arg(param, void *);
2424 case CURLOPT_TLSAUTH_USERNAME:
2425 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2426 va_arg(param, char *));
2427 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2428 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2430 case CURLOPT_TLSAUTH_PASSWORD:
2431 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2432 va_arg(param, char *));
2433 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2434 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2436 case CURLOPT_TLSAUTH_TYPE:
2437 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2438 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2440 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2443 case CURLOPT_DNS_SERVERS:
2444 result = Curl_set_dns_servers(data, va_arg(param, char *));
2447 case CURLOPT_TCP_KEEPALIVE:
2448 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2450 case CURLOPT_TCP_KEEPIDLE:
2451 data->set.tcp_keepidle = va_arg(param, long);
2453 case CURLOPT_TCP_KEEPINTVL:
2454 data->set.tcp_keepintvl = va_arg(param, long);
2458 /* unknown tag and its companion, just ignore: */
2459 result = CURLE_UNKNOWN_OPTION;
2466 static void conn_free(struct connectdata *conn)
2471 /* possible left-overs from the async name resolvers */
2472 Curl_resolver_cancel(conn);
2474 /* close the SSL stuff before we close any sockets since they will/may
2475 write to the sockets */
2476 Curl_ssl_close(conn, FIRSTSOCKET);
2477 Curl_ssl_close(conn, SECONDARYSOCKET);
2479 /* close possibly still open sockets */
2480 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2481 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2482 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2483 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2485 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2486 Curl_ntlm_wb_cleanup(conn);
2489 Curl_safefree(conn->user);
2490 Curl_safefree(conn->passwd);
2491 Curl_safefree(conn->options);
2492 Curl_safefree(conn->proxyuser);
2493 Curl_safefree(conn->proxypasswd);
2494 Curl_safefree(conn->allocptr.proxyuserpwd);
2495 Curl_safefree(conn->allocptr.uagent);
2496 Curl_safefree(conn->allocptr.userpwd);
2497 Curl_safefree(conn->allocptr.accept_encoding);
2498 Curl_safefree(conn->allocptr.te);
2499 Curl_safefree(conn->allocptr.rangeline);
2500 Curl_safefree(conn->allocptr.ref);
2501 Curl_safefree(conn->allocptr.host);
2502 Curl_safefree(conn->allocptr.cookiehost);
2503 Curl_safefree(conn->allocptr.rtsp_transport);
2504 Curl_safefree(conn->trailer);
2505 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2506 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2507 Curl_safefree(conn->master_buffer);
2509 Curl_llist_destroy(conn->send_pipe, NULL);
2510 Curl_llist_destroy(conn->recv_pipe, NULL);
2512 conn->send_pipe = NULL;
2513 conn->recv_pipe = NULL;
2515 Curl_safefree(conn->localdev);
2516 Curl_free_ssl_config(&conn->ssl_config);
2518 free(conn); /* free all the connection oriented data */
2521 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2523 struct SessionHandle *data;
2525 return CURLE_OK; /* this is closed and fine already */
2529 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2533 if(conn->dns_entry != NULL) {
2534 Curl_resolv_unlock(data, conn->dns_entry);
2535 conn->dns_entry = NULL;
2538 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2541 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2542 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2544 /* Authentication data is a mix of connection-related and sessionhandle-
2545 related stuff. NTLM is connection-related so when we close the shop
2549 data->state.authhost.done = FALSE;
2550 data->state.authhost.picked =
2551 data->state.authhost.want;
2554 if(has_proxy_ntlm) {
2555 data->state.authproxy.done = FALSE;
2556 data->state.authproxy.picked =
2557 data->state.authproxy.want;
2560 if(has_host_ntlm || has_proxy_ntlm)
2561 data->state.authproblem = FALSE;
2564 /* Cleanup NTLM connection-related data */
2565 Curl_http_ntlm_cleanup(conn);
2567 /* Cleanup possible redirect junk */
2568 if(data->req.newurl) {
2569 free(data->req.newurl);
2570 data->req.newurl = NULL;
2573 if(conn->handler->disconnect)
2574 /* This is set if protocol-specific cleanups should be made */
2575 conn->handler->disconnect(conn, dead_connection);
2577 /* unlink ourselves! */
2578 infof(data, "Closing connection %ld\n", conn->connection_id);
2579 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2581 #if defined(USE_LIBIDN)
2582 if(conn->host.encalloc)
2583 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2584 with idn_free() since this was allocated
2586 if(conn->proxy.encalloc)
2587 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2588 freed with idn_free() since this was
2589 allocated by libidn */
2590 #elif defined(USE_WIN32_IDN)
2591 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2592 idn_free() since this was allocated by
2593 curl_win32_idn_to_ascii */
2594 if(conn->proxy.encalloc)
2595 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2596 with idn_free() since this was allocated by
2597 curl_win32_idn_to_ascii */
2600 Curl_ssl_close(conn, FIRSTSOCKET);
2602 /* Indicate to all handles on the pipe that we're dead */
2603 if(Curl_multi_pipeline_enabled(data->multi)) {
2604 signalPipeClose(conn->send_pipe, TRUE);
2605 signalPipeClose(conn->recv_pipe, TRUE);
2610 Curl_speedinit(data);
2616 * This function should return TRUE if the socket is to be assumed to
2617 * be dead. Most commonly this happens when the server has closed the
2618 * connection due to inactivity.
2620 static bool SocketIsDead(curl_socket_t sock)
2623 bool ret_val = TRUE;
2625 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2633 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2634 const struct connectdata *conn)
2636 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2637 Curl_multi_pipeline_enabled(handle->multi) &&
2638 (handle->set.httpreq == HTTPREQ_GET ||
2639 handle->set.httpreq == HTTPREQ_HEAD) &&
2640 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2646 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2648 return Curl_multi_pipeline_enabled(handle->multi);
2651 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2652 struct curl_llist *pipeline)
2654 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2655 return CURLE_OUT_OF_MEMORY;
2656 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2660 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2661 struct curl_llist *pipeline)
2663 struct curl_llist_element *curr;
2665 curr = pipeline->head;
2667 if(curr->ptr == handle) {
2668 Curl_llist_remove(pipeline, curr, NULL);
2669 return 1; /* we removed a handle */
2677 #if 0 /* this code is saved here as it is useful for debugging purposes */
2678 static void Curl_printPipeline(struct curl_llist *pipeline)
2680 struct curl_llist_element *curr;
2682 curr = pipeline->head;
2684 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2685 infof(data, "Handle in pipeline: %s\n", data->state.path);
2691 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2693 struct curl_llist_element *curr = pipeline->head;
2695 return (struct SessionHandle *) curr->ptr;
2701 /* remove the specified connection from all (possible) pipelines and related
2703 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2704 struct connectdata *conn)
2706 bool recv_head = (conn->readchannel_inuse &&
2707 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2709 bool send_head = (conn->writechannel_inuse &&
2710 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2712 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2713 conn->readchannel_inuse = FALSE;
2714 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2715 conn->writechannel_inuse = FALSE;
2718 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2720 struct curl_llist_element *curr;
2725 curr = pipeline->head;
2727 struct curl_llist_element *next = curr->next;
2728 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2730 #ifdef DEBUGBUILD /* debug-only code */
2731 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2733 infof(data, "signalPipeClose() found BAAD easy handle\n");
2738 data->state.pipe_broke = TRUE;
2739 Curl_multi_handlePipeBreak(data);
2740 Curl_llist_remove(pipeline, curr, NULL);
2746 * This function finds the connection in the connection
2747 * cache that has been unused for the longest time.
2749 * Returns the pointer to the oldest idle connection, or NULL if none was
2752 static struct connectdata *
2753 find_oldest_idle_connection(struct SessionHandle *data)
2755 struct conncache *bc = data->state.conn_cache;
2756 struct curl_hash_iterator iter;
2757 struct curl_llist_element *curr;
2758 struct curl_hash_element *he;
2762 struct connectdata *conn_candidate = NULL;
2763 struct connectbundle *bundle;
2767 Curl_hash_start_iterate(bc->hash, &iter);
2769 he = Curl_hash_next_element(&iter);
2771 struct connectdata *conn;
2775 curr = bundle->conn_list->head;
2780 /* Set higher score for the age passed since the connection was used */
2781 score = Curl_tvdiff(now, conn->now);
2783 if(score > highscore) {
2785 conn_candidate = conn;
2791 he = Curl_hash_next_element(&iter);
2794 return conn_candidate;
2798 * This function finds the connection in the connection
2799 * bundle that has been unused for the longest time.
2801 * Returns the pointer to the oldest idle connection, or NULL if none was
2804 static struct connectdata *
2805 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2806 struct connectbundle *bundle)
2808 struct curl_llist_element *curr;
2812 struct connectdata *conn_candidate = NULL;
2813 struct connectdata *conn;
2819 curr = bundle->conn_list->head;
2824 /* Set higher score for the age passed since the connection was used */
2825 score = Curl_tvdiff(now, conn->now);
2827 if(score > highscore) {
2829 conn_candidate = conn;
2835 return conn_candidate;
2839 * Given one filled in connection struct (named needle), this function should
2840 * detect if there already is one that has all the significant details
2841 * exactly the same and thus should be used instead.
2843 * If there is a match, this function returns TRUE - and has marked the
2844 * connection as 'in-use'. It must later be called with ConnectionDone() to
2845 * return back to 'idle' (unused) state.
2847 * The force_reuse flag is set if the connection must be used, even if
2848 * the pipelining strategy wants to open a new connection instead of reusing.
2851 ConnectionExists(struct SessionHandle *data,
2852 struct connectdata *needle,
2853 struct connectdata **usethis,
2856 struct connectdata *check;
2857 struct connectdata *chosen = 0;
2858 bool canPipeline = IsPipeliningPossible(data, needle);
2859 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2860 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2861 struct connectbundle *bundle;
2863 *force_reuse = FALSE;
2865 /* We can't pipe if the site is blacklisted */
2866 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2867 canPipeline = FALSE;
2870 /* Look up the bundle with all the connections to this
2872 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2875 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2876 size_t best_pipe_len = max_pipe_len;
2877 struct curl_llist_element *curr;
2879 infof(data, "Found bundle for host %s: %p\n",
2880 needle->host.name, (void *)bundle);
2882 /* We can't pipe if we don't know anything about the server */
2883 if(canPipeline && !bundle->server_supports_pipelining) {
2884 infof(data, "Server doesn't support pipelining\n");
2885 canPipeline = FALSE;
2888 curr = bundle->conn_list->head;
2891 bool credentialsMatch = FALSE;
2895 * Note that if we use a HTTP proxy, we check connections to that
2896 * proxy and not to the actual remote server.
2901 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2903 if(!pipeLen && !check->inuse) {
2904 /* The check for a dead socket makes sense only if there are no
2905 handles in pipeline and the connection isn't already marked in
2908 if(check->handler->protocol & CURLPROTO_RTSP)
2909 /* RTSP is a special case due to RTP interleaving */
2910 dead = Curl_rtsp_connisdead(check);
2912 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2916 infof(data, "Connection %ld seems to be dead!\n",
2917 check->connection_id);
2919 /* disconnect resources */
2920 Curl_disconnect(check, /* dead_connection */ TRUE);
2926 /* Make sure the pipe has only GET requests */
2927 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2928 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2930 if(!IsPipeliningPossible(sh, check))
2934 if(!IsPipeliningPossible(rh, check))
2940 /* can only happen within multi handles, and means that another easy
2941 handle is using this connection */
2945 if(Curl_resolver_asynch()) {
2946 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2947 completed yet and until then we don't re-use this connection */
2948 if(!check->ip_addr_str[0]) {
2950 "Connection #%ld is still name resolving, can't reuse\n",
2951 check->connection_id);
2956 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2957 check->bits.close) {
2958 /* Don't pick a connection that hasn't connected yet or that is going
2960 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2961 check->connection_id);
2963 if(check->recv_pipe->size > 0) {
2965 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2966 check->connection_id);
2973 if((needle->handler->flags&PROTOPT_SSL) !=
2974 (check->handler->flags&PROTOPT_SSL))
2975 /* don't do mixed SSL and non-SSL connections */
2976 if(!(needle->handler->protocol & check->handler->protocol))
2977 /* except protocols that have been upgraded via TLS */
2980 if(needle->handler->flags&PROTOPT_SSL) {
2981 if((data->set.ssl.verifypeer != check->verifypeer) ||
2982 (data->set.ssl.verifyhost != check->verifyhost))
2986 if(needle->bits.proxy != check->bits.proxy)
2987 /* don't do mixed proxy and non-proxy connections */
2990 if(!canPipeline && check->inuse)
2991 /* this request can't be pipelined but the checked connection is
2992 already in use so we skip it */
2995 if(needle->localdev || needle->localport) {
2996 /* If we are bound to a specific local end (IP+port), we must not
2997 re-use a random other one, although if we didn't ask for a
2998 particular one we can reuse one that was bound.
3000 This comparison is a bit rough and too strict. Since the input
3001 parameters can be specified in numerous ways and still end up the
3002 same it would take a lot of processing to make it really accurate.
3003 Instead, this matching will assume that re-uses of bound connections
3004 will most likely also re-use the exact same binding parameters and
3005 missing out a few edge cases shouldn't hurt anyone very much.
3007 if((check->localport != needle->localport) ||
3008 (check->localportrange != needle->localportrange) ||
3010 !needle->localdev ||
3011 strcmp(check->localdev, needle->localdev))
3015 if((needle->handler->protocol & CURLPROTO_FTP) ||
3016 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3017 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3018 and password as well */
3019 if(!strequal(needle->user, check->user) ||
3020 !strequal(needle->passwd, check->passwd)) {
3021 /* one of them was different */
3024 credentialsMatch = TRUE;
3027 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3028 (needle->bits.httpproxy && check->bits.httpproxy &&
3029 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3030 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3031 (needle->port == check->port))) {
3032 /* The requested connection does not use a HTTP proxy or it uses SSL or
3033 it is a non-SSL protocol tunneled over the same http proxy name and
3034 port number or it is a non-SSL protocol which is allowed to be
3037 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3038 needle->handler->protocol & check->handler->protocol) &&
3039 Curl_raw_equal(needle->host.name, check->host.name) &&
3040 needle->remote_port == check->remote_port) {
3041 if(needle->handler->flags & PROTOPT_SSL) {
3042 /* This is a SSL connection so verify that we're using the same
3043 SSL options as well */
3044 if(!Curl_ssl_config_matches(&needle->ssl_config,
3045 &check->ssl_config)) {
3047 "Connection #%ld has different SSL parameters, "
3049 check->connection_id));
3052 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3054 "Connection #%ld has not started SSL connect, "
3056 check->connection_id));
3063 else { /* The requested needle connection is using a proxy,
3064 is the checked one using the same host, port and type? */
3065 if(check->bits.proxy &&
3066 (needle->proxytype == check->proxytype) &&
3067 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3068 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3069 needle->port == check->port) {
3070 /* This is the same proxy connection, use it! */
3076 /* If we are looking for an NTLM connection, check if this is already
3077 authenticating with the right credentials. If not, keep looking so
3078 that we can reuse NTLM connections if possible. (Especially we
3079 must not reuse the same connection if partway through
3082 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3085 /* We must use this connection, no other */
3086 *force_reuse = TRUE;
3094 /* We can pipeline if we want to. Let's continue looking for
3095 the optimal connection to use, i.e the shortest pipe that is not
3099 /* We have the optimal connection. Let's stop looking. */
3104 /* We can't use the connection if the pipe is full */
3105 if(pipeLen >= max_pipe_len)
3108 /* We can't use the connection if the pipe is penalized */
3109 if(Curl_pipeline_penalized(data, check))
3112 if(pipeLen < best_pipe_len) {
3113 /* This connection has a shorter pipe so far. We'll pick this
3114 and continue searching */
3116 best_pipe_len = pipeLen;
3121 /* We have found a connection. Let's stop searching. */
3131 return TRUE; /* yes, we found one to use! */
3134 return FALSE; /* no matching connecting exists */
3137 /* Mark the connection as 'idle', or close it if the cache is full.
3138 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3140 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3142 /* data->multi->maxconnects can be negative, deal with it. */
3143 size_t maxconnects =
3144 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3145 struct connectdata *conn_candidate = NULL;
3147 /* Mark the current connection as 'unused' */
3148 conn->inuse = FALSE;
3150 if(maxconnects > 0 &&
3151 data->state.conn_cache->num_connections > maxconnects) {
3152 infof(data, "Connection cache is full, closing the oldest one.\n");
3154 conn_candidate = find_oldest_idle_connection(data);
3156 if(conn_candidate) {
3157 /* Set the connection's owner correctly */
3158 conn_candidate->data = data;
3160 /* the winner gets the honour of being disconnected */
3161 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3165 return (conn_candidate == conn) ? FALSE : TRUE;
3169 * The given input connection struct pointer is to be stored in the connection
3170 * cache. If the cache is already full, least interesting existing connection
3171 * (if any) gets closed.
3173 * The given connection should be unique. That must've been checked prior to
3176 static CURLcode ConnectionStore(struct SessionHandle *data,
3177 struct connectdata *conn)
3179 static int connection_id_counter = 0;
3183 /* Assign a number to the connection for easier tracking in the log
3185 conn->connection_id = connection_id_counter++;
3187 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3188 if(result != CURLE_OK)
3189 conn->connection_id = -1;
3194 /* after a TCP connection to the proxy has been verified, this function does
3195 the next magic step.
3197 Note: this function's sub-functions call failf()
3200 CURLcode Curl_connected_proxy(struct connectdata *conn)
3202 if(!conn->bits.proxy)
3205 switch(conn->proxytype) {
3206 #ifndef CURL_DISABLE_PROXY
3207 case CURLPROXY_SOCKS5:
3208 case CURLPROXY_SOCKS5_HOSTNAME:
3209 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3210 conn->host.name, conn->remote_port,
3213 case CURLPROXY_SOCKS4:
3214 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3215 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3217 case CURLPROXY_SOCKS4A:
3218 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3219 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3221 #endif /* CURL_DISABLE_PROXY */
3222 case CURLPROXY_HTTP:
3223 case CURLPROXY_HTTP_1_0:
3224 /* do nothing here. handled later. */
3228 } /* switch proxytype */
3233 static CURLcode ConnectPlease(struct SessionHandle *data,
3234 struct connectdata *conn,
3238 Curl_addrinfo *addr;
3239 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3240 char *hostname = conn->bits.proxy?conn->proxy.name:conn->host.name;
3242 infof(data, "About to connect() to %s%s port %ld (#%ld)\n",
3243 conn->bits.proxy?"proxy ":"",
3244 hostname, conn->port, conn->connection_id);
3249 /*************************************************************
3250 * Connect to server/proxy
3251 *************************************************************/
3252 result= Curl_connecthost(conn,
3254 &conn->sock[FIRSTSOCKET],
3257 if(CURLE_OK == result) {
3258 /* All is cool, we store the current information */
3259 conn->ip_addr = addr;
3262 result = Curl_connected_proxy(conn);
3264 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
3265 Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
3271 *connected = FALSE; /* mark it as not connected */
3277 * verboseconnect() displays verbose information after a connect
3279 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3280 void Curl_verboseconnect(struct connectdata *conn)
3282 if(conn->data->set.verbose)
3283 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3284 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3285 conn->ip_addr_str, conn->port, conn->connection_id);
3289 int Curl_protocol_getsock(struct connectdata *conn,
3290 curl_socket_t *socks,
3293 if(conn->handler->proto_getsock)
3294 return conn->handler->proto_getsock(conn, socks, numsocks);
3295 return GETSOCK_BLANK;
3298 int Curl_doing_getsock(struct connectdata *conn,
3299 curl_socket_t *socks,
3302 if(conn && conn->handler->doing_getsock)
3303 return conn->handler->doing_getsock(conn, socks, numsocks);
3304 return GETSOCK_BLANK;
3308 * We are doing protocol-specific connecting and this is being called over and
3309 * over from the multi interface until the connection phase is done on
3313 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3316 CURLcode result=CURLE_OK;
3318 if(conn && conn->handler->connecting) {
3320 result = conn->handler->connecting(conn, done);
3329 * We are DOING this is being called over and over from the multi interface
3330 * until the DOING phase is done on protocol layer.
3333 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3335 CURLcode result=CURLE_OK;
3337 if(conn && conn->handler->doing) {
3339 result = conn->handler->doing(conn, done);
3348 * We have discovered that the TCP connection has been successful, we can now
3349 * proceed with some action.
3352 CURLcode Curl_protocol_connect(struct connectdata *conn,
3353 bool *protocol_done)
3355 CURLcode result=CURLE_OK;
3357 *protocol_done = FALSE;
3359 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3360 /* We already are connected, get back. This may happen when the connect
3361 worked fine in the first call, like when we connect to a local server
3362 or proxy. Note that we don't know if the protocol is actually done.
3364 Unless this protocol doesn't have any protocol-connect callback, as
3365 then we know we're done. */
3366 if(!conn->handler->connecting)
3367 *protocol_done = TRUE;
3372 if(!conn->bits.protoconnstart) {
3374 result = Curl_proxy_connect(conn);
3378 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3379 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3380 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3381 before proceeding further. Return CURLE_OK so we'll be called again */
3384 if(conn->handler->connect_it) {
3385 /* is there a protocol-specific connect() procedure? */
3387 /* Call the protocol-specific connect function */
3388 result = conn->handler->connect_it(conn, protocol_done);
3391 *protocol_done = TRUE;
3393 /* it has started, possibly even completed but that knowledge isn't stored
3396 conn->bits.protoconnstart = TRUE;
3399 return result; /* pass back status */
3403 * Helpers for IDNA convertions.
3405 static bool is_ASCII_name(const char *hostname)
3407 const unsigned char *ch = (const unsigned char*)hostname;
3418 * Check if characters in hostname is allowed in Top Level Domain.
3420 static bool tld_check_name(struct SessionHandle *data,
3421 const char *ace_hostname)
3424 char *uc_name = NULL;
3426 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3427 const char *tld_errmsg = "<no msg>";
3432 /* Convert (and downcase) ACE-name back into locale's character set */
3433 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3434 if(rc != IDNA_SUCCESS)
3437 rc = tld_check_lz(uc_name, &err_pos, NULL);
3438 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3439 #ifdef HAVE_TLD_STRERROR
3440 if(rc != TLD_SUCCESS)
3441 tld_errmsg = tld_strerror((Tld_rc)rc);
3443 if(rc == TLD_INVALID)
3444 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3445 tld_errmsg, err_pos, uc_name[err_pos],
3446 uc_name[err_pos] & 255);
3447 else if(rc != TLD_SUCCESS)
3448 infof(data, "WARNING: TLD check for %s failed; %s\n",
3449 uc_name, tld_errmsg);
3450 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3453 if(rc != TLD_SUCCESS)
3461 * Perform any necessary IDN conversion of hostname
3463 static void fix_hostname(struct SessionHandle *data,
3464 struct connectdata *conn, struct hostname *host)
3469 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3473 /* set the name we use to display the host name */
3474 host->dispname = host->name;
3475 if(!is_ASCII_name(host->name)) {
3477 /*************************************************************
3478 * Check name for non-ASCII and convert hostname to ACE form.
3479 *************************************************************/
3480 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3481 char *ace_hostname = NULL;
3482 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3483 infof (data, "Input domain encoded as `%s'\n",
3484 stringprep_locale_charset ());
3485 if(rc != IDNA_SUCCESS)
3486 infof(data, "Failed to convert %s to ACE; %s\n",
3487 host->name, Curl_idn_strerror(conn,rc));
3489 /* tld_check_name() displays a warning if the host name contains
3490 "illegal" characters for this TLD */
3491 (void)tld_check_name(data, ace_hostname);
3493 host->encalloc = ace_hostname;
3494 /* change the name pointer to point to the encoded hostname */
3495 host->name = host->encalloc;
3498 #elif defined(USE_WIN32_IDN)
3499 /*************************************************************
3500 * Check name for non-ASCII and convert hostname to ACE form.
3501 *************************************************************/
3502 char *ace_hostname = NULL;
3503 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3505 infof(data, "Failed to convert %s to ACE;\n",
3508 host->encalloc = ace_hostname;
3509 /* change the name pointer to point to the encoded hostname */
3510 host->name = host->encalloc;
3513 infof(data, "IDN support not present, can't parse Unicode domains\n");
3518 static void llist_dtor(void *user, void *element)
3526 * Allocate and initialize a new connectdata object.
3528 static struct connectdata *allocate_conn(struct SessionHandle *data)
3530 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3534 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3535 already from start to avoid NULL
3536 situations and checks */
3538 /* and we setup a few fields in case we end up actually using this struct */
3540 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3541 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3542 conn->connection_id = -1; /* no ID */
3543 conn->port = -1; /* unknown at this point */
3545 /* Default protocol-independent behavior doesn't support persistent
3546 connections, so we set this to force-close. Protocols that support
3547 this need to set this to FALSE in their "curl_do" functions. */
3548 conn->bits.close = TRUE;
3550 /* Store creation time to help future close decision making */
3551 conn->created = Curl_tvnow();
3553 conn->data = data; /* Setup the association between this connection
3554 and the SessionHandle */
3556 conn->proxytype = data->set.proxytype; /* type */
3558 #ifdef CURL_DISABLE_PROXY
3560 conn->bits.proxy = FALSE;
3561 conn->bits.httpproxy = FALSE;
3562 conn->bits.proxy_user_passwd = FALSE;
3563 conn->bits.tunnel_proxy = FALSE;
3565 #else /* CURL_DISABLE_PROXY */
3567 /* note that these two proxy bits are now just on what looks to be
3568 requested, they may be altered down the road */
3569 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3570 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3571 conn->bits.httpproxy = (conn->bits.proxy &&
3572 (conn->proxytype == CURLPROXY_HTTP ||
3573 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3574 conn->bits.proxy_user_passwd =
3575 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3576 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3578 #endif /* CURL_DISABLE_PROXY */
3580 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3581 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3582 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3584 conn->verifypeer = data->set.ssl.verifypeer;
3585 conn->verifyhost = data->set.ssl.verifyhost;
3587 conn->ip_version = data->set.ipver;
3589 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3590 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3591 conn->ntlm_auth_hlpr_pid = 0;
3592 conn->challenge_header = NULL;
3593 conn->response_header = NULL;
3596 if(Curl_multi_pipeline_enabled(data->multi) &&
3597 !conn->master_buffer) {
3598 /* Allocate master_buffer to be used for pipelining */
3599 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3600 if(!conn->master_buffer)
3604 /* Initialize the pipeline lists */
3605 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3606 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3607 if(!conn->send_pipe || !conn->recv_pipe)
3611 conn->data_prot = PROT_CLEAR;
3614 /* Store the local bind parameters that will be used for this connection */
3615 if(data->set.str[STRING_DEVICE]) {
3616 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3620 conn->localportrange = data->set.localportrange;
3621 conn->localport = data->set.localport;
3623 /* the close socket stuff needs to be copied to the connection struct as
3624 it may live on without (this specific) SessionHandle */
3625 conn->fclosesocket = data->set.fclosesocket;
3626 conn->closesocket_client = data->set.closesocket_client;
3631 Curl_llist_destroy(conn->send_pipe, NULL);
3632 Curl_llist_destroy(conn->recv_pipe, NULL);
3634 conn->send_pipe = NULL;
3635 conn->recv_pipe = NULL;
3637 Curl_safefree(conn->master_buffer);
3638 Curl_safefree(conn->localdev);
3639 Curl_safefree(conn);
3643 static CURLcode findprotocol(struct SessionHandle *data,
3644 struct connectdata *conn,
3645 const char *protostr)
3647 const struct Curl_handler * const *pp;
3648 const struct Curl_handler *p;
3650 /* Scan protocol handler table and match against 'protostr' to set a few
3651 variables based on the URL. Now that the handler may be changed later
3652 when the protocol specific setup function is called. */
3653 for(pp = protocols; (p = *pp) != NULL; pp++) {
3654 if(Curl_raw_equal(p->scheme, protostr)) {
3655 /* Protocol found in table. Check if allowed */
3656 if(!(data->set.allowed_protocols & p->protocol))
3660 /* it is allowed for "normal" request, now do an extra check if this is
3661 the result of a redirect */
3662 if(data->state.this_is_a_follow &&
3663 !(data->set.redir_protocols & p->protocol))
3667 /* Perform setup complement if some. */
3668 conn->handler = conn->given = p;
3670 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3676 /* The protocol was not found in the table, but we don't have to assign it
3677 to anything since it is already assigned to a dummy-struct in the
3678 create_conn() function when the connectdata struct is allocated. */
3679 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3682 return CURLE_UNSUPPORTED_PROTOCOL;
3686 * Parse URL and fill in the relevant members of the connection struct.
3688 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3689 struct connectdata *conn,
3691 char **userp, char **passwdp,
3696 char *path = data->state.path;
3702 bool rebuild_url = FALSE;
3704 *prot_missing = FALSE;
3706 /*************************************************************
3709 * We need to parse the url even when using the proxy, because we will need
3710 * the hostname and port in case we are trying to SSL connect through the
3711 * proxy -- and we don't know if we will need to use SSL until we parse the
3713 ************************************************************/
3714 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3716 Curl_raw_equal(protobuf, "file")) {
3717 if(path[0] == '/' && path[1] == '/') {
3718 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3719 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3720 * file://localhost/<path> is similar to how other schemes treat missing
3721 * hostnames. See RFC 1808. */
3723 /* This cannot be done with strcpy() in a portable manner, since the
3724 memory areas overlap! */
3725 memmove(path, path + 2, strlen(path + 2)+1);
3728 * we deal with file://<host>/<path> differently since it supports no
3729 * hostname other than "localhost" and "127.0.0.1", which is unique among
3730 * the URL protocols specified in RFC 1738
3732 if(path[0] != '/') {
3733 /* the URL included a host name, we ignore host names in file:// URLs
3734 as the standards don't define what to do with them */
3735 char *ptr=strchr(path, '/');
3737 /* there was a slash present
3739 RFC1738 (section 3.1, page 5) says:
3741 The rest of the locator consists of data specific to the scheme,
3742 and is known as the "url-path". It supplies the details of how the
3743 specified resource can be accessed. Note that the "/" between the
3744 host (or port) and the url-path is NOT part of the url-path.
3746 As most agents use file://localhost/foo to get '/foo' although the
3747 slash preceding foo is a separator and not a slash for the path,
3748 a URL as file://localhost//foo must be valid as well, to refer to
3749 the same file with an absolute path.
3752 if(ptr[1] && ('/' == ptr[1]))
3753 /* if there was two slashes, we skip the first one as that is then
3754 used truly as a separator */
3757 /* This cannot be made with strcpy, as the memory chunks overlap! */
3758 memmove(path, ptr, strlen(ptr)+1);
3762 protop = "file"; /* protocol string */
3768 if(2 > sscanf(data->change.url,
3769 "%15[^\n:]://%[^\n/?]%[^\n]",
3771 conn->host.name, path)) {
3774 * The URL was badly formatted, let's try the browser-style _without_
3775 * protocol specified like 'http://'.
3777 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3780 * We couldn't even get this format.
3781 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3782 * assigned, but the return value is EOF!
3784 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3785 if(!(rc == -1 && *conn->host.name))
3788 failf(data, "<url> malformed");
3789 return CURLE_URL_MALFORMAT;
3794 * Since there was no protocol part specified, we guess what protocol it
3795 * is based on the first letters of the server name.
3798 /* Note: if you add a new protocol, please update the list in
3799 * lib/version.c too! */
3801 if(checkprefix("FTP.", conn->host.name))
3803 else if(checkprefix("DICT.", conn->host.name))
3805 else if(checkprefix("LDAP.", conn->host.name))
3807 else if(checkprefix("IMAP.", conn->host.name))
3809 else if(checkprefix("SMTP.", conn->host.name))
3811 else if(checkprefix("POP3.", conn->host.name))
3817 *prot_missing = TRUE; /* not given in URL */
3823 /* We search for '?' in the host name (but only on the right side of a
3824 * @-letter to allow ?-letters in username and password) to handle things
3825 * like http://example.com?param= (notice the missing '/').
3827 at = strchr(conn->host.name, '@');
3829 query = strchr(at+1, '?');
3831 query = strchr(conn->host.name, '?');
3834 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3835 a slash after the '?', that is where the path currently begins and the
3836 '?string' is still part of the host name.
3838 We must move the trailing part from the host name and put it first in
3839 the path. And have it all prefixed with a slash.
3842 size_t hostlen = strlen(query);
3843 size_t pathlen = strlen(path);
3845 /* move the existing path plus the zero byte forward, to make room for
3846 the host-name part */
3847 memmove(path+hostlen+1, path, pathlen+1);
3849 /* now copy the trailing host part in front of the existing path */
3850 memcpy(path+1, query, hostlen);
3852 path[0]='/'; /* prepend the missing slash */
3855 *query=0; /* now cut off the hostname at the ? */
3858 /* if there's no path set, use a single slash */
3863 /* If the URL is malformatted (missing a '/' after hostname before path) we
3864 * insert a slash here. The only letter except '/' we accept to start a path
3867 if(path[0] == '?') {
3868 /* We need this function to deal with overlapping memory areas. We know
3869 that the memory area 'path' points to is 'urllen' bytes big and that
3870 is bigger than the path. Use +1 to move the zero byte too. */
3871 memmove(&path[1], path, strlen(path)+1);
3876 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3877 char *newp = Curl_dedotdotify(path);
3879 return CURLE_OUT_OF_MEMORY;
3881 if(strcmp(newp, path)) {
3883 free(data->state.pathbuffer);
3884 data->state.pathbuffer = newp;
3885 data->state.path = newp;
3893 * "rebuild_url" means that one or more URL components have been modified so
3894 * we need to generate an updated full version. We need the corrected URL
3895 * when communicating over HTTP proxy and we don't know at this point if
3896 * we're using a proxy or not.
3901 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3903 size_t urllen = strlen(data->change.url); /* original URL length */
3905 size_t prefixlen = strlen(conn->host.name);
3908 prefixlen += strlen(protop) + strlen("://");
3910 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3912 return CURLE_OUT_OF_MEMORY;
3914 /* copy the prefix */
3915 memcpy(reurl, data->change.url, prefixlen);
3917 /* append the trailing piece + zerobyte */
3918 memcpy(&reurl[prefixlen], path, plen + 1);
3920 /* possible free the old one */
3921 if(data->change.url_alloc) {
3922 Curl_safefree(data->change.url);
3923 data->change.url_alloc = FALSE;
3926 infof(data, "Rebuilt URL to: %s\n", reurl);
3928 data->change.url = reurl;
3929 data->change.url_alloc = TRUE; /* free this later */
3933 * Parse the login details from the URL and strip them out of
3936 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3937 if(result != CURLE_OK)
3940 if(conn->host.name[0] == '[') {
3941 /* This looks like an IPv6 address literal. See if there is an address
3943 char *percent = strstr (conn->host.name, "%25");
3946 unsigned long scope = strtoul (percent + 3, &endp, 10);
3948 /* The address scope was well formed. Knock it out of the
3950 memmove(percent, endp, strlen(endp)+1);
3951 if(!data->state.this_is_a_follow)
3952 /* Don't honour a scope given in a Location: header */
3953 conn->scope = (unsigned int)scope;
3956 infof(data, "Invalid IPv6 address format\n");
3961 /* Override any scope that was set above. */
3962 conn->scope = data->set.scope;
3964 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3965 last part of the URI. We are looking for the first '#' so that we deal
3966 gracefully with non conformant URI such as http://example.com#foo#bar. */
3967 fragment = strchr(path, '#');
3971 /* we know the path part ended with a fragment, so we know the full URL
3972 string does too and we need to cut it off from there so it isn't used
3974 fragment = strchr(data->change.url, '#');
3980 * So if the URL was A://B/C#D,
3982 * conn->host.name is B
3983 * data->state.path is /C
3986 return findprotocol(data, conn, protop);
3990 * If we're doing a resumed transfer, we need to setup our stuff
3993 static CURLcode setup_range(struct SessionHandle *data)
3995 struct UrlState *s = &data->state;
3996 s->resume_from = data->set.set_resume_from;
3997 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3998 if(s->rangestringalloc)
4002 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
4004 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4006 s->rangestringalloc = (s->range)?TRUE:FALSE;
4009 return CURLE_OUT_OF_MEMORY;
4011 /* tell ourselves to fetch this range */
4012 s->use_range = TRUE; /* enable range download */
4015 s->use_range = FALSE; /* disable range download */
4022 * setup_connection_internals() -
4024 * Setup connection internals specific to the requested protocol in the
4025 * SessionHandle. This is inited and setup before the connection is made but
4026 * is about the particular protocol that is to be used.
4028 * This MUST get called after proxy magic has been figured out.
4030 static CURLcode setup_connection_internals(struct connectdata *conn)
4032 const struct Curl_handler * p;
4035 /* in some case in the multi state-machine, we go back to the CONNECT state
4036 and then a second (or third or...) call to this function will be made
4037 without doing a DISCONNECT or DONE in between (since the connection is
4038 yet in place) and therefore this function needs to first make sure
4039 there's no lingering previous data allocated. */
4040 Curl_free_request_state(conn->data);
4042 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4043 conn->data->req.maxdownload = -1;
4045 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4047 /* Perform setup complement if some. */
4050 if(p->setup_connection) {
4051 result = (*p->setup_connection)(conn);
4053 if(result != CURLE_OK)
4056 p = conn->handler; /* May have changed. */
4060 /* we check for -1 here since if proxy was detected already, this
4061 was very likely already set to the proxy port */
4062 conn->port = p->defport;
4064 /* only if remote_port was not already parsed off the URL we use the
4065 default port number */
4066 if(!conn->remote_port)
4067 conn->remote_port = (unsigned short)conn->given->defport;
4073 * Curl_free_request_state() should free temp data that was allocated in the
4074 * SessionHandle for this single request.
4077 void Curl_free_request_state(struct SessionHandle *data)
4079 Curl_safefree(data->req.protop);
4083 #ifndef CURL_DISABLE_PROXY
4084 /****************************************************************
4085 * Checks if the host is in the noproxy list. returns true if it matches
4086 * and therefore the proxy should NOT be used.
4087 ****************************************************************/
4088 static bool check_noproxy(const char* name, const char* no_proxy)
4090 /* no_proxy=domain1.dom,host.domain2.dom
4091 * (a comma-separated list of hosts which should
4092 * not be proxied, or an asterisk to override
4093 * all proxy variables)
4097 const char* separator = ", ";
4098 size_t no_proxy_len;
4102 if(no_proxy && no_proxy[0]) {
4103 if(Curl_raw_equal("*", no_proxy)) {
4107 /* NO_PROXY was specified and it wasn't just an asterisk */
4109 no_proxy_len = strlen(no_proxy);
4110 endptr = strchr(name, ':');
4112 namelen = endptr - name;
4114 namelen = strlen(name);
4116 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4117 while(tok_start < no_proxy_len &&
4118 strchr(separator, no_proxy[tok_start]) != NULL) {
4119 /* Look for the beginning of the token. */
4123 if(tok_start == no_proxy_len)
4124 break; /* It was all trailing separator chars, no more tokens. */
4126 for(tok_end = tok_start; tok_end < no_proxy_len &&
4127 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4128 /* Look for the end of the token. */
4131 /* To match previous behaviour, where it was necessary to specify
4132 * ".local.com" to prevent matching "notlocal.com", we will leave
4135 if(no_proxy[tok_start] == '.')
4138 if((tok_end - tok_start) <= namelen) {
4139 /* Match the last part of the name to the domain we are checking. */
4140 const char *checkn = name + namelen - (tok_end - tok_start);
4141 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4142 tok_end - tok_start)) {
4143 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4144 /* We either have an exact match, or the previous character is a .
4145 * so it is within the same domain, so no proxy for this host.
4150 } /* if((tok_end - tok_start) <= namelen) */
4151 } /* for(tok_start = 0; tok_start < no_proxy_len;
4152 tok_start = tok_end + 1) */
4153 } /* NO_PROXY was specified and it wasn't just an asterisk */
4158 /****************************************************************
4159 * Detect what (if any) proxy to use. Remember that this selects a host
4160 * name and is not limited to HTTP proxies only.
4161 * The returned pointer must be freed by the caller (unless NULL)
4162 ****************************************************************/
4163 static char *detect_proxy(struct connectdata *conn)
4167 #ifndef CURL_DISABLE_HTTP
4168 /* If proxy was not specified, we check for default proxy environment
4169 * variables, to enable i.e Lynx compliance:
4171 * http_proxy=http://some.server.dom:port/
4172 * https_proxy=http://some.server.dom:port/
4173 * ftp_proxy=http://some.server.dom:port/
4174 * no_proxy=domain1.dom,host.domain2.dom
4175 * (a comma-separated list of hosts which should
4176 * not be proxied, or an asterisk to override
4177 * all proxy variables)
4178 * all_proxy=http://some.server.dom:port/
4179 * (seems to exist for the CERN www lib. Probably
4180 * the first to check for.)
4182 * For compatibility, the all-uppercase versions of these variables are
4183 * checked if the lowercase versions don't exist.
4185 char *no_proxy=NULL;
4186 char proxy_env[128];
4188 no_proxy=curl_getenv("no_proxy");
4190 no_proxy=curl_getenv("NO_PROXY");
4192 if(!check_noproxy(conn->host.name, no_proxy)) {
4193 /* It was not listed as without proxy */
4194 const char *protop = conn->handler->scheme;
4195 char *envp = proxy_env;
4198 /* Now, build <protocol>_proxy and check for such a one to use */
4200 *envp++ = (char)tolower((int)*protop++);
4203 strcpy(envp, "_proxy");
4205 /* read the protocol proxy: */
4206 prox=curl_getenv(proxy_env);
4209 * We don't try the uppercase version of HTTP_PROXY because of
4212 * When curl is used in a webserver application
4213 * environment (cgi or php), this environment variable can
4214 * be controlled by the web server user by setting the
4215 * http header 'Proxy:' to some value.
4217 * This can cause 'internal' http/ftp requests to be
4218 * arbitrarily redirected by any external attacker.
4220 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4221 /* There was no lowercase variable, try the uppercase version: */
4222 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4223 prox=curl_getenv(proxy_env);
4226 if(prox && *prox) { /* don't count "" strings */
4227 proxy = prox; /* use this */
4230 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4232 proxy=curl_getenv("ALL_PROXY");
4234 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4239 #else /* !CURL_DISABLE_HTTP */
4242 #endif /* CURL_DISABLE_HTTP */
4248 * If this is supposed to use a proxy, we need to figure out the proxy
4249 * host name, so that we can re-use an existing connection
4250 * that may exist registered to the same proxy host.
4251 * proxy will be freed before this function returns.
4253 static CURLcode parse_proxy(struct SessionHandle *data,
4254 struct connectdata *conn, char *proxy)
4259 /* We use 'proxyptr' to point to the proxy name from now on... */
4264 /* We do the proxy host string parsing here. We want the host name and the
4265 * port name. Accept a protocol:// prefix
4268 /* Parse the protocol part if present */
4269 endofprot = strstr(proxy, "://");
4271 proxyptr = endofprot+3;
4272 if(checkprefix("socks5h", proxy))
4273 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4274 else if(checkprefix("socks5", proxy))
4275 conn->proxytype = CURLPROXY_SOCKS5;
4276 else if(checkprefix("socks4a", proxy))
4277 conn->proxytype = CURLPROXY_SOCKS4A;
4278 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4279 conn->proxytype = CURLPROXY_SOCKS4;
4280 /* Any other xxx:// : change to http proxy */
4283 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4285 /* Is there a username and password given in this proxy url? */
4286 atsign = strchr(proxyptr, '@');
4288 CURLcode res = CURLE_OK;
4289 char *proxyuser = NULL;
4290 char *proxypasswd = NULL;
4292 res = parse_login_details(proxyptr, atsign - proxyptr,
4293 &proxyuser, &proxypasswd, NULL);
4295 /* found user and password, rip them out. note that we are
4296 unescaping them, as there is otherwise no way to have a
4297 username or password with reserved characters like ':' in
4299 Curl_safefree(conn->proxyuser);
4300 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4301 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4303 conn->proxyuser = strdup("");
4305 if(!conn->proxyuser)
4306 res = CURLE_OUT_OF_MEMORY;
4308 Curl_safefree(conn->proxypasswd);
4309 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4310 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4312 conn->proxypasswd = strdup("");
4314 if(!conn->proxypasswd)
4315 res = CURLE_OUT_OF_MEMORY;
4319 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4320 atsign++; /* the right side of the @-letter */
4323 proxyptr = atsign; /* now use this instead */
4325 res = CURLE_OUT_OF_MEMORY;
4329 Curl_safefree(proxyuser);
4330 Curl_safefree(proxypasswd);
4336 /* start scanning for port number at this point */
4339 /* detect and extract RFC2732-style IPv6-addresses */
4340 if(*proxyptr == '[') {
4341 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4342 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4346 /* yeps, it ended nicely with a bracket as well */
4349 infof(data, "Invalid IPv6 address format\n");
4351 /* Note that if this didn't end with a bracket, we still advanced the
4352 * proxyptr first, but I can't see anything wrong with that as no host
4353 * name nor a numeric can legally start with a bracket.
4357 /* Get port number off proxy.server.com:1080 */
4358 prox_portno = strchr(portptr, ':');
4360 *prox_portno = 0x0; /* cut off number from host name */
4362 /* now set the local port number */
4363 conn->port = strtol(prox_portno, NULL, 10);
4366 if(proxyptr[0]=='/')
4367 /* If the first character in the proxy string is a slash, fail
4368 immediately. The following code will otherwise clear the string which
4369 will lead to code running as if no proxy was set! */
4370 return CURLE_COULDNT_RESOLVE_PROXY;
4372 /* without a port number after the host name, some people seem to use
4373 a slash so we strip everything from the first slash */
4374 atsign = strchr(proxyptr, '/');
4376 *atsign = 0x0; /* cut off path part from host name */
4378 if(data->set.proxyport)
4379 /* None given in the proxy string, then get the default one if it is
4381 conn->port = data->set.proxyport;
4384 /* now, clone the cleaned proxy host name */
4385 conn->proxy.rawalloc = strdup(proxyptr);
4386 conn->proxy.name = conn->proxy.rawalloc;
4388 if(!conn->proxy.rawalloc)
4389 return CURLE_OUT_OF_MEMORY;
4395 * Extract the user and password from the authentication string
4397 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4398 struct connectdata *conn)
4400 char proxyuser[MAX_CURL_USER_LENGTH]="";
4401 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4403 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4404 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4405 MAX_CURL_USER_LENGTH);
4406 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4408 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4409 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4410 MAX_CURL_PASSWORD_LENGTH);
4411 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4414 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4415 if(!conn->proxyuser)
4416 return CURLE_OUT_OF_MEMORY;
4418 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4419 if(!conn->proxypasswd)
4420 return CURLE_OUT_OF_MEMORY;
4424 #endif /* CURL_DISABLE_PROXY */
4429 * Parse the login details (user name, password and options) from the URL and
4430 * strip them out of the host name
4432 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4435 * Outputs: (almost :- all currently undefined)
4436 * conn->bits.user_passwd - non-zero if non-default passwords exist
4437 * user - non-zero length if defined
4438 * passwd - non-zero length if defined
4439 * options - non-zero length if defined
4440 * conn->host.name - remove user name and password
4442 static CURLcode parse_url_login(struct SessionHandle *data,
4443 struct connectdata *conn,
4444 char **user, char **passwd, char **options)
4446 CURLcode result = CURLE_OK;
4448 char *passwdp = NULL;
4449 char *optionsp = NULL;
4451 /* At this point, we're hoping all the other special cases have
4452 * been taken care of, so conn->host.name is at most
4453 * [user[:password][;options]]@]hostname
4455 * We need somewhere to put the embedded details, so do that first.
4458 char *ptr = strchr(conn->host.name, '@');
4459 char *login = conn->host.name;
4461 DEBUGASSERT(!**user);
4462 DEBUGASSERT(!**passwd);
4463 DEBUGASSERT(!**options);
4468 /* We will now try to extract the
4469 * possible login information in a string like:
4470 * ftp://user:password@ftp.my.site:8021/README */
4471 conn->host.name = ++ptr;
4473 /* So the hostname is sane. Only bother interpreting the
4474 * results if we could care. It could still be wasted
4475 * work because it might be overtaken by the programmatically
4476 * set user/passwd, but doing that first adds more cases here :-(
4479 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4482 /* We could use the login information in the URL so extract it */
4483 result = parse_login_details(login, ptr - login - 1,
4484 &userp, &passwdp, &optionsp);
4485 if(result != CURLE_OK)
4491 /* We have a user in the URL */
4492 conn->bits.userpwd_in_url = TRUE;
4493 conn->bits.user_passwd = TRUE; /* enable user+password */
4495 /* Decode the user */
4496 newname = curl_easy_unescape(data, userp, 0, NULL);
4498 result = CURLE_OUT_OF_MEMORY;
4507 /* We have a password in the URL so decode it */
4508 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4510 result = CURLE_OUT_OF_MEMORY;
4515 *passwd = newpasswd;
4519 /* We have an options list in the URL so decode it */
4520 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4522 result = CURLE_OUT_OF_MEMORY;
4527 *options = newoptions;
4533 Curl_safefree(userp);
4534 Curl_safefree(passwdp);
4535 Curl_safefree(optionsp);
4541 * parse_login_details()
4543 * This is used to parse a login string for user name, password and options in
4544 * the following formats:
4548 * user:password;options
4550 * user;options:password
4558 * login [in] - The login string.
4559 * len [in] - The length of the login string.
4560 * userp [in/out] - The address where a pointer to newly allocated memory
4561 * holding the user will be stored upon completion.
4562 * passdwp [in/out] - The address where a pointer to newly allocated memory
4563 * holding the password will be stored upon completion.
4564 * optionsp [in/out] - The address where a pointer to newly allocated memory
4565 * holding the options will be stored upon completion.
4567 * Returns CURLE_OK on success.
4569 static CURLcode parse_login_details(const char *login, const size_t len,
4570 char **userp, char **passwdp,
4573 CURLcode result = CURLE_OK;
4577 const char *psep = NULL;
4578 const char *osep = NULL;
4583 /* Attempt to find the password separator */
4585 psep = strchr(login, ':');
4587 /* Within the constraint of the login string */
4588 if(psep >= login + len)
4592 /* Attempt to find the options separator */
4594 osep = strchr(login, ';');
4596 /* Within the constraint of the login string */
4597 if(osep >= login + len)
4601 /* Calculate the portion lengths */
4603 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4604 (osep ? (size_t)(osep - login) : len));
4606 (osep && osep > psep ? (size_t)(osep - psep) :
4607 (size_t)(login + len - psep)) - 1 : 0);
4609 (psep && psep > osep ? (size_t)(psep - osep) :
4610 (size_t)(login + len - osep)) - 1 : 0);
4612 /* Allocate the user portion buffer */
4614 ubuf = malloc(ulen + 1);
4616 result = CURLE_OUT_OF_MEMORY;
4619 /* Allocate the password portion buffer */
4620 if(!result && passwdp && plen) {
4621 pbuf = malloc(plen + 1);
4623 Curl_safefree(ubuf);
4624 result = CURLE_OUT_OF_MEMORY;
4628 /* Allocate the options portion buffer */
4629 if(!result && optionsp && olen) {
4630 obuf = malloc(olen + 1);
4632 Curl_safefree(pbuf);
4633 Curl_safefree(ubuf);
4634 result = CURLE_OUT_OF_MEMORY;
4639 /* Store the user portion if necessary */
4641 memcpy(ubuf, login, ulen);
4643 Curl_safefree(*userp);
4647 /* Store the password portion if necessary */
4649 memcpy(pbuf, psep + 1, plen);
4651 Curl_safefree(*passwdp);
4655 /* Store the options portion if necessary */
4657 memcpy(obuf, osep + 1, olen);
4659 Curl_safefree(*optionsp);
4667 /*************************************************************
4668 * Figure out the remote port number and fix it in the URL
4670 * No matter if we use a proxy or not, we have to figure out the remote
4671 * port number of various reasons.
4673 * To be able to detect port number flawlessly, we must not confuse them
4674 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4676 * The conn->host.name is currently [user:passwd@]host[:port] where host
4677 * could be a hostname, IPv4 address or IPv6 address.
4679 * The port number embedded in the URL is replaced, if necessary.
4680 *************************************************************/
4681 static CURLcode parse_remote_port(struct SessionHandle *data,
4682 struct connectdata *conn)
4687 /* Note that at this point, the IPv6 address cannot contain any scope
4688 suffix as that has already been removed in the parseurlandfillconn()
4690 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4692 (']' == endbracket)) {
4693 /* this is a RFC2732-style specified IP-address */
4694 conn->bits.ipv6_ip = TRUE;
4696 conn->host.name++; /* skip over the starting bracket */
4697 portptr = strchr(conn->host.name, ']');
4699 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4701 portptr = NULL; /* no port number available */
4706 struct in6_addr in6;
4707 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4708 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4710 failf(data, "IPv6 numerical address used in URL without brackets");
4711 return CURLE_URL_MALFORMAT;
4715 portptr = strrchr(conn->host.name, ':');
4718 if(data->set.use_port && data->state.allow_port) {
4719 /* if set, we use this and ignore the port possibly given in the URL */
4720 conn->remote_port = (unsigned short)data->set.use_port;
4722 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4723 number - since the port number is to be ignored! */
4724 if(conn->bits.httpproxy) {
4725 /* we need to create new URL with the new port number */
4729 if(conn->bits.type_set)
4730 snprintf(type, sizeof(type), ";type=%c",
4731 data->set.prefer_ascii?'A':
4732 (data->set.ftp_list_only?'D':'I'));
4735 * This synthesized URL isn't always right--suffixes like ;type=A are
4736 * stripped off. It would be better to work directly from the original
4737 * URL and simply replace the port part of it.
4739 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4740 conn->bits.ipv6_ip?"[":"", conn->host.name,
4741 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4742 data->state.slash_removed?"/":"", data->state.path,
4745 return CURLE_OUT_OF_MEMORY;
4747 if(data->change.url_alloc) {
4748 Curl_safefree(data->change.url);
4749 data->change.url_alloc = FALSE;
4752 data->change.url = url;
4753 data->change.url_alloc = TRUE;
4757 /* no CURLOPT_PORT given, extract the one from the URL */
4762 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4764 if(rest != (portptr+1) && *rest == '\0') {
4765 /* The colon really did have only digits after it,
4766 * so it is either a port number or a mistake */
4768 if(port > 0xffff) { /* Single unix standard says port numbers are
4770 failf(data, "Port number too large: %lu", port);
4771 return CURLE_URL_MALFORMAT;
4774 *portptr = '\0'; /* cut off the name there */
4775 conn->remote_port = curlx_ultous(port);
4778 /* Browser behavior adaptation. If there's a colon with no digits after,
4779 just cut off the name there which makes us ignore the colon and just
4780 use the default port. Firefox and Chrome both do that. */
4787 * Override the login details from the URL with that in the CURLOPT_USERPWD
4788 * option or a .netrc file, if applicable.
4790 static int override_login(struct SessionHandle *data,
4791 struct connectdata *conn,
4792 char **userp, char **passwdp, char **optionsp)
4794 if(data->set.str[STRING_USERNAME]) {
4796 *userp = strdup(data->set.str[STRING_USERNAME]);
4798 return CURLE_OUT_OF_MEMORY;
4801 if(data->set.str[STRING_PASSWORD]) {
4803 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4805 return CURLE_OUT_OF_MEMORY;
4808 if(data->set.str[STRING_OPTIONS]) {
4810 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4812 return CURLE_OUT_OF_MEMORY;
4815 conn->bits.netrc = FALSE;
4816 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4817 if(Curl_parsenetrc(conn->host.name,
4819 data->set.str[STRING_NETRC_FILE])) {
4820 infof(data, "Couldn't find host %s in the "
4821 DOT_CHAR "netrc file; using defaults\n",
4825 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4826 file, so that it is safe to use even if we followed a Location: to a
4827 different host or similar. */
4828 conn->bits.netrc = TRUE;
4830 conn->bits.user_passwd = TRUE; /* enable user+password */
4837 * Set password so it's available in the connection.
4839 static CURLcode set_login(struct connectdata *conn,
4840 const char *user, const char *passwd,
4841 const char *options)
4843 CURLcode result = CURLE_OK;
4845 /* If our protocol needs a password and we have none, use the defaults */
4846 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4847 /* Store the default user */
4848 conn->user = strdup(CURL_DEFAULT_USER);
4850 /* Store the default password */
4852 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4854 conn->passwd = NULL;
4856 /* This is the default password, so DON'T set conn->bits.user_passwd */
4859 /* Store the user, zero-length if not set */
4860 conn->user = strdup(user);
4862 /* Store the password (only if user is present), zero-length if not set */
4864 conn->passwd = strdup(passwd);
4866 conn->passwd = NULL;
4869 if(!conn->user || !conn->passwd)
4870 result = CURLE_OUT_OF_MEMORY;
4872 /* Store the options, null if not set */
4873 if(!result && options[0]) {
4874 conn->options = strdup(options);
4877 result = CURLE_OUT_OF_MEMORY;
4883 /*************************************************************
4884 * Resolve the address of the server or proxy
4885 *************************************************************/
4886 static CURLcode resolve_server(struct SessionHandle *data,
4887 struct connectdata *conn,
4890 CURLcode result=CURLE_OK;
4891 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4893 /*************************************************************
4894 * Resolve the name of the server or proxy
4895 *************************************************************/
4896 if(conn->bits.reuse)
4897 /* We're reusing the connection - no need to resolve anything, and
4898 fix_hostname() was called already in create_conn() for the re-use
4903 /* this is a fresh connect */
4905 struct Curl_dns_entry *hostaddr;
4907 /* set a pointer to the hostname we display */
4908 fix_hostname(data, conn, &conn->host);
4910 if(!conn->proxy.name || !*conn->proxy.name) {
4911 /* If not connecting via a proxy, extract the port from the URL, if it is
4912 * there, thus overriding any defaults that might have been set above. */
4913 conn->port = conn->remote_port; /* it is the same port */
4915 /* Resolve target host right on */
4916 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4917 &hostaddr, timeout_ms);
4918 if(rc == CURLRESOLV_PENDING)
4921 else if(rc == CURLRESOLV_TIMEDOUT)
4922 result = CURLE_OPERATION_TIMEDOUT;
4924 else if(!hostaddr) {
4925 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4926 result = CURLE_COULDNT_RESOLVE_HOST;
4927 /* don't return yet, we need to clean up the timeout first */
4931 /* This is a proxy that hasn't been resolved yet. */
4933 /* IDN-fix the proxy name */
4934 fix_hostname(data, conn, &conn->proxy);
4937 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4938 &hostaddr, timeout_ms);
4940 if(rc == CURLRESOLV_PENDING)
4943 else if(rc == CURLRESOLV_TIMEDOUT)
4944 result = CURLE_OPERATION_TIMEDOUT;
4946 else if(!hostaddr) {
4947 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4948 result = CURLE_COULDNT_RESOLVE_PROXY;
4949 /* don't return yet, we need to clean up the timeout first */
4952 DEBUGASSERT(conn->dns_entry == NULL);
4953 conn->dns_entry = hostaddr;
4960 * Cleanup the connection just allocated before we can move along and use the
4961 * previously existing one. All relevant data is copied over and old_conn is
4962 * ready for freeing once this function returns.
4964 static void reuse_conn(struct connectdata *old_conn,
4965 struct connectdata *conn)
4967 if(old_conn->proxy.rawalloc)
4968 free(old_conn->proxy.rawalloc);
4970 /* free the SSL config struct from this connection struct as this was
4971 allocated in vain and is targeted for destruction */
4972 Curl_free_ssl_config(&old_conn->ssl_config);
4974 conn->data = old_conn->data;
4976 /* get the user+password information from the old_conn struct since it may
4977 * be new for this request even when we re-use an existing connection */
4978 conn->bits.user_passwd = old_conn->bits.user_passwd;
4979 if(conn->bits.user_passwd) {
4980 /* use the new user name and password though */
4981 Curl_safefree(conn->user);
4982 Curl_safefree(conn->passwd);
4983 conn->user = old_conn->user;
4984 conn->passwd = old_conn->passwd;
4985 old_conn->user = NULL;
4986 old_conn->passwd = NULL;
4989 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4990 if(conn->bits.proxy_user_passwd) {
4991 /* use the new proxy user name and proxy password though */
4992 Curl_safefree(conn->proxyuser);
4993 Curl_safefree(conn->proxypasswd);
4994 conn->proxyuser = old_conn->proxyuser;
4995 conn->proxypasswd = old_conn->proxypasswd;
4996 old_conn->proxyuser = NULL;
4997 old_conn->proxypasswd = NULL;
5000 /* host can change, when doing keepalive with a proxy or if the case is
5001 different this time etc */
5002 Curl_safefree(conn->host.rawalloc);
5003 conn->host=old_conn->host;
5005 /* persist connection info in session handle */
5006 Curl_persistconninfo(conn);
5009 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5011 Curl_safefree(old_conn->user);
5012 Curl_safefree(old_conn->passwd);
5013 Curl_safefree(old_conn->proxyuser);
5014 Curl_safefree(old_conn->proxypasswd);
5015 Curl_safefree(old_conn->localdev);
5017 Curl_llist_destroy(old_conn->send_pipe, NULL);
5018 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5020 old_conn->send_pipe = NULL;
5021 old_conn->recv_pipe = NULL;
5023 Curl_safefree(old_conn->master_buffer);
5027 * create_conn() sets up a new connectdata struct, or re-uses an already
5028 * existing one, and resolves host name.
5030 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5031 * response will be coming asynchronously. If *async is FALSE, the name is
5034 * @param data The sessionhandle pointer
5035 * @param in_connect is set to the next connection data pointer
5036 * @param async is set TRUE when an async DNS resolution is pending
5037 * @see Curl_setup_conn()
5039 * *NOTE* this function assigns the conn->data pointer!
5042 static CURLcode create_conn(struct SessionHandle *data,
5043 struct connectdata **in_connect,
5046 CURLcode result = CURLE_OK;
5047 struct connectdata *conn;
5048 struct connectdata *conn_temp = NULL;
5051 char *passwd = NULL;
5052 char *options = NULL;
5055 bool prot_missing = FALSE;
5056 bool no_connections_available = FALSE;
5058 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5059 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5063 /*************************************************************
5065 *************************************************************/
5067 if(!data->change.url) {
5068 result = CURLE_URL_MALFORMAT;
5072 /* First, split up the current URL in parts so that we can use the
5073 parts for checking against the already present connections. In order
5074 to not have to modify everything at once, we allocate a temporary
5075 connection data struct and fill in for comparison purposes. */
5076 conn = allocate_conn(data);
5079 result = CURLE_OUT_OF_MEMORY;
5083 /* We must set the return variable as soon as possible, so that our
5084 parent can cleanup any possible allocs we may have done before
5088 /* This initing continues below, see the comment "Continue connectdata
5089 * initialization here" */
5091 /***********************************************************
5092 * We need to allocate memory to store the path in. We get the size of the
5093 * full URL to be sure, and we need to make it at least 256 bytes since
5094 * other parts of the code will rely on this fact
5095 ***********************************************************/
5096 #define LEAST_PATH_ALLOC 256
5097 urllen=strlen(data->change.url);
5098 if(urllen < LEAST_PATH_ALLOC)
5099 urllen=LEAST_PATH_ALLOC;
5102 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5103 * 1 - an extra terminating zero
5104 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5107 Curl_safefree(data->state.pathbuffer);
5108 data->state.path = NULL;
5110 data->state.pathbuffer = malloc(urllen+2);
5111 if(NULL == data->state.pathbuffer) {
5112 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5115 data->state.path = data->state.pathbuffer;
5117 conn->host.rawalloc = malloc(urllen+2);
5118 if(NULL == conn->host.rawalloc) {
5119 Curl_safefree(data->state.pathbuffer);
5120 data->state.path = NULL;
5121 result = CURLE_OUT_OF_MEMORY;
5125 conn->host.name = conn->host.rawalloc;
5126 conn->host.name[0] = 0;
5129 passwd = strdup("");
5130 options = strdup("");
5131 if(!user || !passwd || !options) {
5132 result = CURLE_OUT_OF_MEMORY;
5136 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5138 if(result != CURLE_OK)
5141 /*************************************************************
5142 * No protocol part in URL was used, add it!
5143 *************************************************************/
5145 /* We're guessing prefixes here and if we're told to use a proxy or if
5146 we're gonna follow a Location: later or... then we need the protocol
5147 part added so that we have a valid URL. */
5150 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5153 result = CURLE_OUT_OF_MEMORY;
5157 if(data->change.url_alloc) {
5158 Curl_safefree(data->change.url);
5159 data->change.url_alloc = FALSE;
5162 data->change.url = reurl;
5163 data->change.url_alloc = TRUE; /* free this later */
5166 /*************************************************************
5167 * If the protocol can't handle url query strings, then cut
5168 * of the unhandable part
5169 *************************************************************/
5170 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5171 char *path_q_sep = strchr(conn->data->state.path, '?');
5173 /* according to rfc3986, allow the query (?foo=bar)
5174 also on protocols that can't handle it.
5176 cut the string-part after '?'
5179 /* terminate the string */
5184 #ifndef CURL_DISABLE_PROXY
5185 /*************************************************************
5186 * Extract the user and password from the authentication string
5187 *************************************************************/
5188 if(conn->bits.proxy_user_passwd) {
5189 result = parse_proxy_auth(data, conn);
5190 if(result != CURLE_OK)
5194 /*************************************************************
5195 * Detect what (if any) proxy to use
5196 *************************************************************/
5197 if(data->set.str[STRING_PROXY]) {
5198 proxy = strdup(data->set.str[STRING_PROXY]);
5199 /* if global proxy is set, this is it */
5201 failf(data, "memory shortage");
5202 result = CURLE_OUT_OF_MEMORY;
5207 if(data->set.str[STRING_NOPROXY] &&
5208 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5210 free(proxy); /* proxy is in exception list */
5215 proxy = detect_proxy(conn);
5217 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5218 free(proxy); /* Don't bother with an empty proxy string or if the
5219 protocol doesn't work with network */
5223 /***********************************************************************
5224 * If this is supposed to use a proxy, we need to figure out the proxy host
5225 * name, proxy type and port number, so that we can re-use an existing
5226 * connection that may exist registered to the same proxy host.
5227 ***********************************************************************/
5229 result = parse_proxy(data, conn, proxy);
5231 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5236 if((conn->proxytype == CURLPROXY_HTTP) ||
5237 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5238 #ifdef CURL_DISABLE_HTTP
5239 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5240 result = CURLE_UNSUPPORTED_PROTOCOL;
5243 /* force this connection's protocol to become HTTP if not already
5244 compatible - if it isn't tunneling through */
5245 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5246 !conn->bits.tunnel_proxy)
5247 conn->handler = &Curl_handler_http;
5249 conn->bits.httpproxy = TRUE;
5253 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5254 conn->bits.proxy = TRUE;
5257 /* we aren't using the proxy after all... */
5258 conn->bits.proxy = FALSE;
5259 conn->bits.httpproxy = FALSE;
5260 conn->bits.proxy_user_passwd = FALSE;
5261 conn->bits.tunnel_proxy = FALSE;
5264 #endif /* CURL_DISABLE_PROXY */
5266 /*************************************************************
5267 * If the protocol is using SSL and HTTP proxy is used, we set
5268 * the tunnel_proxy bit.
5269 *************************************************************/
5270 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5271 conn->bits.tunnel_proxy = TRUE;
5273 /*************************************************************
5274 * Figure out the remote port number and fix it in the URL
5275 *************************************************************/
5276 result = parse_remote_port(data, conn);
5277 if(result != CURLE_OK)
5280 /* Check for overridden login details and set them accordingly so they
5281 they are known when protocol->setup_connection is called! */
5282 result = override_login(data, conn, &user, &passwd, &options);
5283 if(result != CURLE_OK)
5285 result = set_login(conn, user, passwd, options);
5286 if(result != CURLE_OK)
5289 /*************************************************************
5290 * Setup internals depending on protocol. Needs to be done after
5291 * we figured out what/if proxy to use.
5292 *************************************************************/
5293 result = setup_connection_internals(conn);
5294 if(result != CURLE_OK)
5297 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5298 conn->send[FIRSTSOCKET] = Curl_send_plain;
5299 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5300 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5302 /***********************************************************************
5303 * file: is a special case in that it doesn't need a network connection
5304 ***********************************************************************/
5305 #ifndef CURL_DISABLE_FILE
5306 if(conn->handler->flags & PROTOPT_NONETWORK) {
5308 /* this is supposed to be the connect function so we better at least check
5309 that the file is present here! */
5310 DEBUGASSERT(conn->handler->connect_it);
5311 result = conn->handler->connect_it(conn, &done);
5313 /* Setup a "faked" transfer that'll do nothing */
5314 if(CURLE_OK == result) {
5316 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5318 ConnectionStore(data, conn);
5321 * Setup whatever necessary for a resumed transfer
5323 result = setup_range(data);
5325 DEBUGASSERT(conn->handler->done);
5326 /* we ignore the return code for the protocol-specific DONE */
5327 (void)conn->handler->done(conn, result, FALSE);
5331 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5332 -1, NULL); /* no upload */
5335 /* since we skip do_init() */
5342 /* Get a cloned copy of the SSL config situation stored in the
5343 connection struct. But to get this going nicely, we must first make
5344 sure that the strings in the master copy are pointing to the correct
5345 strings in the session handle strings array!
5347 Keep in mind that the pointers in the master copy are pointing to strings
5348 that will be freed as part of the SessionHandle struct, but all cloned
5349 copies will be separately allocated.
5351 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5352 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5353 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5354 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5355 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5356 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5357 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5359 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5360 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5363 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5364 result = CURLE_OUT_OF_MEMORY;
5368 /*************************************************************
5369 * Check the current list of connections to see if we can
5370 * re-use an already existing one or if we have to create a
5372 *************************************************************/
5374 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5375 we only acknowledge this option if this is not a re-used connection
5376 already (which happens due to follow-location or during a HTTP
5377 authentication phase). */
5378 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5381 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5383 /* If we found a reusable connection, we may still want to
5384 open a new connection if we are pipelining. */
5385 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5386 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5388 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5389 conn_temp->connection_id, pipelen);
5391 if(conn_temp->bundle->num_connections < max_host_connections &&
5392 data->state.conn_cache->num_connections < max_total_connections) {
5393 /* We want a new connection anyway */
5396 infof(data, "We can reuse, but we want a new connection anyway\n");
5403 * We already have a connection for this, we got the former connection
5404 * in the conn_temp variable and thus we need to cleanup the one we
5405 * just allocated before we can move along and use the previously
5408 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5409 handle in a multi stack may nick it */
5410 reuse_conn(conn, conn_temp);
5411 free(conn); /* we don't need this anymore */
5415 /* set a pointer to the hostname we display */
5416 fix_hostname(data, conn, &conn->host);
5418 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5419 conn->connection_id,
5420 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5423 /* We have decided that we want a new connection. However, we may not
5424 be able to do that if we have reached the limit of how many
5425 connections we are allowed to open. */
5426 struct connectbundle *bundle;
5428 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5430 if(max_host_connections > 0 && bundle &&
5431 (bundle->num_connections >= max_host_connections)) {
5432 struct connectdata *conn_candidate;
5434 /* The bundle is full. Let's see if we can kill a connection. */
5435 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5437 if(conn_candidate) {
5438 /* Set the connection's owner correctly, then kill it */
5439 conn_candidate->data = data;
5440 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5443 no_connections_available = TRUE;
5446 if(max_total_connections > 0 &&
5447 (data->state.conn_cache->num_connections >= max_total_connections)) {
5448 struct connectdata *conn_candidate;
5450 /* The cache is full. Let's see if we can kill a connection. */
5451 conn_candidate = find_oldest_idle_connection(data);
5453 if(conn_candidate) {
5454 /* Set the connection's owner correctly, then kill it */
5455 conn_candidate->data = data;
5456 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5459 no_connections_available = TRUE;
5463 if(no_connections_available) {
5464 infof(data, "No connections available.\n");
5469 result = CURLE_NO_CONNECTION_AVAILABLE;
5474 * This is a brand new connection, so let's store it in the connection
5477 ConnectionStore(data, conn);
5481 /* Mark the connection as used */
5484 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5488 * Setup whatever necessary for a resumed transfer
5490 result = setup_range(data);
5494 /* Continue connectdata initialization here. */
5497 * Inherit the proper values from the urldata struct AFTER we have arranged
5498 * the persistent connection stuff
5500 conn->fread_func = data->set.fread_func;
5501 conn->fread_in = data->set.in;
5502 conn->seek_func = data->set.seek_func;
5503 conn->seek_client = data->set.seek_client;
5505 /*************************************************************
5506 * Resolve the address of the server or proxy
5507 *************************************************************/
5508 result = resolve_server(data, conn, async);
5512 Curl_safefree(options);
5513 Curl_safefree(passwd);
5514 Curl_safefree(user);
5515 Curl_safefree(proxy);
5519 /* Curl_setup_conn() is called after the name resolve initiated in
5520 * create_conn() is all done.
5522 * Curl_setup_conn() also handles reused connections
5524 * conn->data MUST already have been setup fine (in create_conn)
5527 CURLcode Curl_setup_conn(struct connectdata *conn,
5528 bool *protocol_done)
5530 CURLcode result = CURLE_OK;
5531 struct SessionHandle *data = conn->data;
5533 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5535 if(conn->handler->flags & PROTOPT_NONETWORK) {
5536 /* nothing to setup when not using a network */
5537 *protocol_done = TRUE;
5540 *protocol_done = FALSE; /* default to not done */
5542 /* set proxy_connect_closed to false unconditionally already here since it
5543 is used strictly to provide extra information to a parent function in the
5544 case of proxy CONNECT failures and we must make sure we don't have it
5545 lingering set from a previous invoke */
5546 conn->bits.proxy_connect_closed = FALSE;
5549 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5550 * basically anything through a http proxy we can't limit this based on
5553 if(data->set.str[STRING_USERAGENT]) {
5554 Curl_safefree(conn->allocptr.uagent);
5555 conn->allocptr.uagent =
5556 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5557 if(!conn->allocptr.uagent)
5558 return CURLE_OUT_OF_MEMORY;
5561 data->req.headerbytecount = 0;
5563 #ifdef CURL_DO_LINEEND_CONV
5564 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5565 #endif /* CURL_DO_LINEEND_CONV */
5567 /* set start time here for timeout purposes in the connect procedure, it
5568 is later set again for the progress meter purpose */
5569 conn->now = Curl_tvnow();
5572 /* loop for CURL_SERVER_CLOSED_CONNECTION */
5574 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5575 /* Try to connect only if not already connected */
5576 bool connected = FALSE;
5578 result = ConnectPlease(data, conn, &connected);
5580 if(result && !conn->ip_addr) {
5581 /* transport connection failure not related with authentication */
5582 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5587 result = Curl_protocol_connect(conn, protocol_done);
5588 if(CURLE_OK == result)
5589 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5592 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5594 /* if the connection was closed by the server while exchanging
5595 authentication informations, retry with the new set
5596 authentication information */
5597 if(conn->bits.proxy_connect_closed) {
5598 /* reset the error buffer */
5599 if(data->set.errorbuffer)
5600 data->set.errorbuffer[0] = '\0';
5601 data->state.errorbuf = FALSE;
5605 if(CURLE_OK != result)
5609 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5610 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5611 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5612 *protocol_done = TRUE;
5613 Curl_verboseconnect(conn);
5614 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5616 /* Stop the loop now */
5620 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5621 set this here perhaps a second time */
5625 * This check is quite a hack. We're calling _fsetmode to fix the problem
5626 * with fwrite converting newline characters (you get mangled text files,
5627 * and corrupted binary files when you download to stdout and redirect it to
5631 if((data->set.out)->_handle == NULL) {
5632 _fsetmode(stdout, "b");
5639 CURLcode Curl_connect(struct SessionHandle *data,
5640 struct connectdata **in_connect,
5642 bool *protocol_done)
5646 *asyncp = FALSE; /* assume synchronous resolves by default */
5648 /* call the stuff that needs to be called */
5649 code = create_conn(data, in_connect, asyncp);
5651 if(CURLE_OK == code) {
5653 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5655 *protocol_done = TRUE;
5657 /* DNS resolution is done: that's either because this is a reused
5658 connection, in which case DNS was unnecessary, or because DNS
5659 really did finish already (synch resolver/fast async resolve) */
5660 code = Curl_setup_conn(*in_connect, protocol_done);
5664 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5669 if(code && *in_connect) {
5670 /* We're not allowed to return failure with memory left allocated
5671 in the connectdata struct, free those here */
5672 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5673 *in_connect = NULL; /* return a NULL */
5679 CURLcode Curl_done(struct connectdata **connp,
5680 CURLcode status, /* an error if this is called after an
5681 error was detected */
5685 struct connectdata *conn;
5686 struct SessionHandle *data;
5688 DEBUGASSERT(*connp);
5694 /* Stop if Curl_done() has already been called */
5697 Curl_getoff_all_pipelines(data, conn);
5699 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5700 !data->set.reuse_forbid &&
5702 /* Stop if pipeline is not empty and we do not have to close
5706 conn->bits.done = TRUE; /* called just now! */
5708 /* Cleanup possible redirect junk */
5709 if(data->req.newurl) {
5710 free(data->req.newurl);
5711 data->req.newurl = NULL;
5713 if(data->req.location) {
5714 free(data->req.location);
5715 data->req.location = NULL;
5718 Curl_resolver_cancel(conn);
5720 if(conn->dns_entry) {
5721 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5722 conn->dns_entry = NULL;
5725 if(status == CURLE_ABORTED_BY_CALLBACK)
5726 /* When we're aborted due to a callback return code it basically have to
5727 be counted as premature as there is trouble ahead if we don't. We have
5728 many callbacks and protocols work differently, we could potentially do
5729 this more fine-grained in the future. */
5732 /* this calls the protocol-specific function pointer previously set */
5733 if(conn->handler->done)
5734 result = conn->handler->done(conn, status, premature);
5738 if(Curl_pgrsDone(conn) && !result)
5739 result = CURLE_ABORTED_BY_CALLBACK;
5741 /* if the transfer was completed in a paused state there can be buffered
5742 data left to write and then kill */
5743 if(data->state.tempwrite) {
5744 free(data->state.tempwrite);
5745 data->state.tempwrite = NULL;
5748 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5749 forced us to close this no matter what we think.
5751 if conn->bits.close is TRUE, it means that the connection should be
5752 closed in spite of all our efforts to be nice, due to protocol
5753 restrictions in our or the server's end
5755 if premature is TRUE, it means this connection was said to be DONE before
5756 the entire request operation is complete and thus we can't know in what
5757 state it is for re-using, so we're forced to close it. In a perfect world
5758 we can add code that keep track of if we really must close it here or not,
5759 but currently we have no such detail knowledge.
5761 if(data->set.reuse_forbid || conn->bits.close || premature) {
5762 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5764 /* If we had an error already, make sure we return that one. But
5765 if we got a new error, return that. */
5770 /* the connection is no longer in use */
5771 if(ConnectionDone(data, conn)) {
5772 /* remember the most recently used connection */
5773 data->state.lastconnect = conn;
5775 infof(data, "Connection #%ld to host %s left intact\n",
5776 conn->connection_id,
5777 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5780 data->state.lastconnect = NULL;
5783 *connp = NULL; /* to make the caller of this function better detect that
5784 this was either closed or handed over to the connection
5785 cache here, and therefore cannot be used from this point on
5787 Curl_free_request_state(data);
5793 * do_init() inits the readwrite session. This is inited each time (in the DO
5794 * function before the protocol-specific DO functions are invoked) for a
5795 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5796 * nothing in here depends on stuff that are setup dynamically for the
5800 static CURLcode do_init(struct connectdata *conn)
5802 struct SessionHandle *data = conn->data;
5803 struct SingleRequest *k = &data->req;
5805 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5806 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5807 data->state.expect100header = FALSE;
5809 if(data->set.opt_no_body)
5810 /* in HTTP lingo, no body means using the HEAD request... */
5811 data->set.httpreq = HTTPREQ_HEAD;
5812 else if(HTTPREQ_HEAD == data->set.httpreq)
5813 /* ... but if unset there really is no perfect method that is the
5814 "opposite" of HEAD but in reality most people probably think GET
5815 then. The important thing is that we can't let it remain HEAD if the
5816 opt_no_body is set FALSE since then we'll behave wrong when getting
5818 data->set.httpreq = HTTPREQ_GET;
5820 k->start = Curl_tvnow(); /* start time */
5821 k->now = k->start; /* current time is now */
5822 k->header = TRUE; /* assume header */
5826 k->buf = data->state.buffer;
5827 k->uploadbuf = data->state.uploadbuffer;
5828 k->hbufp = data->state.headerbuff;
5829 k->ignorebody=FALSE;
5831 Curl_speedinit(data);
5833 Curl_pgrsSetUploadCounter(data, 0);
5834 Curl_pgrsSetDownloadCounter(data, 0);
5840 * do_complete is called when the DO actions are complete.
5842 * We init chunking and trailer bits to their default values here immediately
5843 * before receiving any header data for the current request in the pipeline.
5845 static void do_complete(struct connectdata *conn)
5847 conn->data->req.chunk=FALSE;
5848 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5849 conn->sockfd:conn->writesockfd)+1;
5850 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5853 CURLcode Curl_do(struct connectdata **connp, bool *done)
5855 CURLcode result=CURLE_OK;
5856 struct connectdata *conn = *connp;
5857 struct SessionHandle *data = conn->data;
5859 if(conn->handler->do_it) {
5860 /* generic protocol-specific function pointer set in curl_connect() */
5861 result = conn->handler->do_it(conn, done);
5863 /* This was formerly done in transfer.c, but we better do it here */
5864 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5866 * If the connection is using an easy handle, call reconnect
5867 * to re-establish the connection. Otherwise, let the multi logic
5868 * figure out how to re-establish the connection.
5871 result = Curl_reconnect_request(connp);
5873 if(result == CURLE_OK) {
5874 /* ... finally back to actually retry the DO phase */
5875 conn = *connp; /* re-assign conn since Curl_reconnect_request
5876 creates a new connection */
5877 result = conn->handler->do_it(conn, done);
5884 if((result == CURLE_OK) && *done)
5885 /* do_complete must be called after the protocol-specific DO function */
5892 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5893 * second stage DO state which (wrongly) was introduced to support FTP's
5894 * second connection.
5896 * TODO: A future libcurl should be able to work away this state.
5898 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5899 * DOING state there's more work to do!
5902 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5904 CURLcode result=CURLE_OK;
5908 if(conn->handler->do_more)
5909 result = conn->handler->do_more(conn, complete);
5911 if(!result && (*complete == 1))
5912 /* do_complete must be called after the protocol-specific DO function */