1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char *user, char *passwd, char *options);
148 static CURLcode parse_login_details(const char *login, const size_t len,
149 char **userptr, char **passwdptr,
155 static const struct Curl_handler * const protocols[] = {
157 #ifndef CURL_DISABLE_HTTP
161 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
165 #ifndef CURL_DISABLE_FTP
169 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
173 #ifndef CURL_DISABLE_TELNET
174 &Curl_handler_telnet,
177 #ifndef CURL_DISABLE_DICT
181 #ifndef CURL_DISABLE_LDAP
183 #if !defined(CURL_DISABLE_LDAPS) && \
184 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
185 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
190 #ifndef CURL_DISABLE_FILE
194 #ifndef CURL_DISABLE_TFTP
203 #ifndef CURL_DISABLE_IMAP
210 #ifndef CURL_DISABLE_POP3
217 #ifndef CURL_DISABLE_SMTP
224 #ifndef CURL_DISABLE_RTSP
228 #ifndef CURL_DISABLE_GOPHER
229 &Curl_handler_gopher,
236 &Curl_handler_rtmpte,
238 &Curl_handler_rtmpts,
241 (struct Curl_handler *) NULL
245 * Dummy handler for undefined protocol schemes.
248 static const struct Curl_handler Curl_handler_dummy = {
249 "<no protocol>", /* scheme */
250 ZERO_NULL, /* setup_connection */
251 ZERO_NULL, /* do_it */
252 ZERO_NULL, /* done */
253 ZERO_NULL, /* do_more */
254 ZERO_NULL, /* connect_it */
255 ZERO_NULL, /* connecting */
256 ZERO_NULL, /* doing */
257 ZERO_NULL, /* proto_getsock */
258 ZERO_NULL, /* doing_getsock */
259 ZERO_NULL, /* domore_getsock */
260 ZERO_NULL, /* perform_getsock */
261 ZERO_NULL, /* disconnect */
262 ZERO_NULL, /* readwrite */
265 PROTOPT_NONE /* flags */
268 void Curl_freeset(struct SessionHandle *data)
270 /* Free all dynamic strings stored in the data->set substructure. */
272 for(i=(enum dupstring)0; i < STRING_LAST; i++)
273 Curl_safefree(data->set.str[i]);
275 if(data->change.referer_alloc) {
276 Curl_safefree(data->change.referer);
277 data->change.referer_alloc = FALSE;
279 data->change.referer = NULL;
282 static CURLcode setstropt(char **charp, char *s)
284 /* Release the previous storage at `charp' and replace by a dynamic storage
285 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
287 Curl_safefree(*charp);
293 return CURLE_OUT_OF_MEMORY;
301 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp,
304 CURLcode result = CURLE_OK;
307 char *options = NULL;
309 /* Parse the login details if specified. It not then we treat NULL as a hint
310 to clear the existing data */
312 result = parse_login_details(option, strlen(option),
313 (userp ? &user : NULL),
314 (passwdp ? &passwd : NULL),
315 (optionsp ? &options : NULL));
319 /* Store the username part of option if required */
321 Curl_safefree(*userp);
325 /* Store the password part of option if required */
327 Curl_safefree(*passwdp);
331 /* Store the options part of option if required */
333 Curl_safefree(*optionsp);
341 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
343 CURLcode r = CURLE_OK;
346 /* Copy src->set into dst->set first, then deal with the strings
350 /* clear all string pointers first */
351 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
353 /* duplicate all strings */
354 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
355 r = setstropt(&dst->set.str[i], src->set.str[i]);
360 /* If a failure occurred, freeing has to be performed externally. */
365 * This is the internal function curl_easy_cleanup() calls. This should
366 * cleanup and free all resources associated with this sessionhandle.
368 * NOTE: if we ever add something that attempts to write to a socket or
369 * similar here, we must ignore SIGPIPE first. It is currently only done
370 * when curl_easy_perform() is invoked.
373 CURLcode Curl_close(struct SessionHandle *data)
375 struct Curl_multi *m;
380 Curl_expire(data, 0); /* shut off timers */
385 /* This handle is still part of a multi handle, take care of this first
386 and detach this handle from there. */
387 curl_multi_remove_handle(data->multi, data);
390 /* when curl_easy_perform() is used, it creates its own multi handle to
391 use and this is the one */
392 curl_multi_cleanup(data->multi_easy);
394 /* Destroy the timeout list that is held in the easy handle. It is
395 /normally/ done by curl_multi_remove_handle() but this is "just in
397 if(data->state.timeoutlist) {
398 Curl_llist_destroy(data->state.timeoutlist, NULL);
399 data->state.timeoutlist = NULL;
402 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
403 the multi handle, since that function uses the magic
406 if(data->state.rangestringalloc)
407 free(data->state.range);
409 /* Free the pathbuffer */
410 Curl_safefree(data->state.pathbuffer);
411 data->state.path = NULL;
413 Curl_safefree(data->state.proto.generic);
415 /* Close down all open SSL info and sessions */
416 Curl_ssl_close_all(data);
417 Curl_safefree(data->state.first_host);
418 Curl_safefree(data->state.scratch);
419 Curl_ssl_free_certinfo(data);
421 if(data->change.referer_alloc) {
422 Curl_safefree(data->change.referer);
423 data->change.referer_alloc = FALSE;
425 data->change.referer = NULL;
427 if(data->change.url_alloc) {
428 Curl_safefree(data->change.url);
429 data->change.url_alloc = FALSE;
431 data->change.url = NULL;
433 Curl_safefree(data->state.headerbuff);
435 Curl_flush_cookies(data, 1);
437 Curl_digest_cleanup(data);
439 Curl_safefree(data->info.contenttype);
440 Curl_safefree(data->info.wouldredirect);
442 /* this destroys the channel and we cannot use it anymore after this */
443 Curl_resolver_cleanup(data->state.resolver);
445 Curl_convert_close(data);
447 /* No longer a dirty share, if it exists */
449 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
450 data->share->dirty--;
451 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
460 * Initialize the UserDefined fields within a SessionHandle.
461 * This may be safely called on a new or existing SessionHandle.
463 CURLcode Curl_init_userdefined(struct UserDefined *set)
465 CURLcode res = CURLE_OK;
467 set->out = stdout; /* default output to stdout */
468 set->in = stdin; /* default input from stdin */
469 set->err = stderr; /* default stderr to stderr */
471 /* use fwrite as default function to store output */
472 set->fwrite_func = (curl_write_callback)fwrite;
474 /* use fread as default function to read input */
475 set->fread_func = (curl_read_callback)fread;
476 set->is_fread_set = 0;
477 set->is_fwrite_set = 0;
479 set->seek_func = ZERO_NULL;
480 set->seek_client = ZERO_NULL;
482 /* conversion callbacks for non-ASCII hosts */
483 set->convfromnetwork = ZERO_NULL;
484 set->convtonetwork = ZERO_NULL;
485 set->convfromutf8 = ZERO_NULL;
487 set->infilesize = -1; /* we don't know any size */
488 set->postfieldsize = -1; /* unknown size */
489 set->maxredirs = -1; /* allow any amount by default */
491 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
492 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
493 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
494 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
495 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
496 set->ftp_filemethod = FTPFILE_MULTICWD;
498 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
500 /* Set the default size of the SSL session ID cache */
501 set->ssl.max_ssl_sessions = 5;
503 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
504 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
505 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
506 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
508 /* make libcurl quiet by default: */
509 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
512 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
513 * switched off unless wanted.
515 set->ssl.verifypeer = TRUE;
516 set->ssl.verifyhost = TRUE;
518 set->ssl.authtype = CURL_TLSAUTH_NONE;
520 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
522 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
524 set->new_file_perms = 0644; /* Default permissions */
525 set->new_directory_perms = 0755; /* Default permissions */
527 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
528 define since we internally only use the lower 16 bits for the passed
529 in bitmask to not conflict with the private bits */
530 set->allowed_protocols = CURLPROTO_ALL;
531 set->redir_protocols =
532 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
534 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
536 * disallow unprotected protection negotiation NEC reference implementation
537 * seem not to follow rfc1961 section 4.3/4.4
539 set->socks5_gssapi_nec = FALSE;
540 /* set default gssapi service name */
541 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
542 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
547 /* This is our preferred CA cert bundle/path since install time */
548 #if defined(CURL_CA_BUNDLE)
549 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
550 #elif defined(CURL_CA_PATH)
551 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
554 set->wildcardmatch = FALSE;
555 set->chunk_bgn = ZERO_NULL;
556 set->chunk_end = ZERO_NULL;
558 /* tcp keepalives are disabled by default, but provide reasonable values for
559 * the interval and idle times.
561 set->tcp_keepalive = FALSE;
562 set->tcp_keepintvl = 60;
563 set->tcp_keepidle = 60;
571 * @param curl is a pointer to a sessionhandle pointer that gets set by this
576 CURLcode Curl_open(struct SessionHandle **curl)
578 CURLcode res = CURLE_OK;
579 struct SessionHandle *data;
582 /* Very simple start-up: alloc the struct, init it with zeroes and return */
583 data = calloc(1, sizeof(struct SessionHandle));
585 /* this is a very serious error */
586 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
587 return CURLE_OUT_OF_MEMORY;
590 data->magic = CURLEASY_MAGIC_NUMBER;
592 status = Curl_resolver_init(&data->state.resolver);
594 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
599 /* We do some initial setup here, all those fields that can't be just 0 */
601 data->state.headerbuff = malloc(HEADERSIZE);
602 if(!data->state.headerbuff) {
603 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
604 res = CURLE_OUT_OF_MEMORY;
607 Curl_easy_initHandleData(data);
608 res = Curl_init_userdefined(&data->set);
610 data->state.headersize=HEADERSIZE;
612 Curl_convert_init(data);
614 /* most recent connection is not yet defined */
615 data->state.lastconnect = NULL;
617 data->progress.flags |= PGRS_HIDE;
618 data->state.current_speed = -1; /* init to negative == impossible */
620 data->wildcard.state = CURLWC_INIT;
621 data->wildcard.filelist = NULL;
622 data->set.fnmatch = ZERO_NULL;
623 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
627 Curl_resolver_cleanup(data->state.resolver);
628 if(data->state.headerbuff)
629 free(data->state.headerbuff);
640 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
644 CURLcode result = CURLE_OK;
646 #ifndef CURL_DISABLE_HTTP
651 case CURLOPT_DNS_CACHE_TIMEOUT:
652 data->set.dns_cache_timeout = va_arg(param, long);
654 case CURLOPT_DNS_USE_GLOBAL_CACHE:
655 /* remember we want this enabled */
656 arg = va_arg(param, long);
657 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
659 case CURLOPT_SSL_CIPHER_LIST:
660 /* set a list of cipher we want to use in the SSL connection */
661 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
662 va_arg(param, char *));
665 case CURLOPT_RANDOM_FILE:
667 * This is the path name to a file that contains random data to seed
668 * the random SSL stuff with. The file is only used for reading.
670 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
671 va_arg(param, char *));
673 case CURLOPT_EGDSOCKET:
675 * The Entropy Gathering Daemon socket pathname
677 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
678 va_arg(param, char *));
680 case CURLOPT_MAXCONNECTS:
682 * Set the absolute number of maximum simultaneous alive connection that
683 * libcurl is allowed to have.
685 data->set.maxconnects = va_arg(param, long);
687 case CURLOPT_FORBID_REUSE:
689 * When this transfer is done, it must not be left to be reused by a
690 * subsequent transfer but shall be closed immediately.
692 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
694 case CURLOPT_FRESH_CONNECT:
696 * This transfer shall not use a previously cached connection but
697 * should be made with a fresh new connect!
699 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
701 case CURLOPT_VERBOSE:
703 * Verbose means infof() calls that give a lot of information about
704 * the connection and transfer procedures as well as internal choices.
706 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
710 * Set to include the header in the general data output stream.
712 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
714 case CURLOPT_NOPROGRESS:
716 * Shut off the internal supported progress meter
718 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
719 if(data->set.hide_progress)
720 data->progress.flags |= PGRS_HIDE;
722 data->progress.flags &= ~PGRS_HIDE;
726 * Do not include the body part in the output data stream.
728 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
730 case CURLOPT_FAILONERROR:
732 * Don't output the >=300 error code HTML-page, but instead only
735 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
740 * We want to sent data to the remote host. If this is HTTP, that equals
741 * using the PUT request.
743 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
744 if(data->set.upload) {
745 /* If this is HTTP, PUT is what's needed to "upload" */
746 data->set.httpreq = HTTPREQ_PUT;
747 data->set.opt_no_body = FALSE; /* this is implied */
750 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
751 then this can be changed to HEAD later on) */
752 data->set.httpreq = HTTPREQ_GET;
754 case CURLOPT_FILETIME:
756 * Try to get the file time of the remote document. The time will
757 * later (possibly) become available using curl_easy_getinfo().
759 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
761 case CURLOPT_FTP_CREATE_MISSING_DIRS:
763 * An FTP option that modifies an upload to create missing directories on
766 switch(va_arg(param, long)) {
768 data->set.ftp_create_missing_dirs = 0;
771 data->set.ftp_create_missing_dirs = 1;
774 data->set.ftp_create_missing_dirs = 2;
777 /* reserve other values for future use */
778 result = CURLE_UNKNOWN_OPTION;
782 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
784 * Option that specifies how quickly an server response must be obtained
785 * before it is considered failure. For pingpong protocols.
787 data->set.server_response_timeout = va_arg( param , long ) * 1000;
789 case CURLOPT_TFTP_BLKSIZE:
791 * TFTP option that specifies the block size to use for data transmission
793 data->set.tftp_blksize = va_arg(param, long);
795 case CURLOPT_DIRLISTONLY:
797 * An option that changes the command to one that asks for a list
798 * only, no file info details.
800 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
804 * We want to upload and append to an existing file.
806 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
808 case CURLOPT_FTP_FILEMETHOD:
810 * How do access files over FTP.
812 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
816 * Parse the $HOME/.netrc file
818 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
820 case CURLOPT_NETRC_FILE:
822 * Use this file instead of the $HOME/.netrc file
824 result = setstropt(&data->set.str[STRING_NETRC_FILE],
825 va_arg(param, char *));
827 case CURLOPT_TRANSFERTEXT:
829 * This option was previously named 'FTPASCII'. Renamed to work with
830 * more protocols than merely FTP.
832 * Transfer using ASCII (instead of BINARY).
834 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
836 case CURLOPT_TIMECONDITION:
838 * Set HTTP time condition. This must be one of the defines in the
839 * curl/curl.h header file.
841 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
843 case CURLOPT_TIMEVALUE:
845 * This is the value to compare with the remote document with the
846 * method set with CURLOPT_TIMECONDITION
848 data->set.timevalue = (time_t)va_arg(param, long);
850 case CURLOPT_SSLVERSION:
852 * Set explicit SSL version to try to connect with, as some SSL
853 * implementations are lame.
855 data->set.ssl.version = va_arg(param, long);
858 #ifndef CURL_DISABLE_HTTP
859 case CURLOPT_AUTOREFERER:
861 * Switch on automatic referer that gets set if curl follows locations.
863 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
866 case CURLOPT_ACCEPT_ENCODING:
868 * String to use at the value of Accept-Encoding header.
870 * If the encoding is set to "" we use an Accept-Encoding header that
871 * encompasses all the encodings we support.
872 * If the encoding is set to NULL we don't send an Accept-Encoding header
873 * and ignore an received Content-Encoding header.
876 argptr = va_arg(param, char *);
877 result = setstropt(&data->set.str[STRING_ENCODING],
878 (argptr && !*argptr)?
879 (char *) ALL_CONTENT_ENCODINGS: argptr);
882 case CURLOPT_TRANSFER_ENCODING:
883 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
886 case CURLOPT_FOLLOWLOCATION:
888 * Follow Location: header hints on a HTTP-server.
890 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
893 case CURLOPT_UNRESTRICTED_AUTH:
895 * Send authentication (user+password) when following locations, even when
898 data->set.http_disable_hostname_check_before_authentication =
899 (0 != va_arg(param, long))?TRUE:FALSE;
902 case CURLOPT_MAXREDIRS:
904 * The maximum amount of hops you allow curl to follow Location:
905 * headers. This should mostly be used to detect never-ending loops.
907 data->set.maxredirs = va_arg(param, long);
910 case CURLOPT_POSTREDIR:
913 * Set the behaviour of POST when redirecting
914 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
915 * CURL_REDIR_POST_301 - POST is kept as POST after 301
916 * CURL_REDIR_POST_302 - POST is kept as POST after 302
917 * CURL_REDIR_POST_303 - POST is kept as POST after 303
918 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
919 * other - POST is kept as POST after 301 and 302
921 int postRedir = curlx_sltosi(va_arg(param, long));
922 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
927 /* Does this option serve a purpose anymore? Yes it does, when
928 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
930 if(va_arg(param, long)) {
931 data->set.httpreq = HTTPREQ_POST;
932 data->set.opt_no_body = FALSE; /* this is implied */
935 data->set.httpreq = HTTPREQ_GET;
938 case CURLOPT_COPYPOSTFIELDS:
940 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
941 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
942 * CURLOPT_COPYPOSTFIELDS and not altered later.
944 argptr = va_arg(param, char *);
946 if(!argptr || data->set.postfieldsize == -1)
947 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
950 * Check that requested length does not overflow the size_t type.
953 if((data->set.postfieldsize < 0) ||
954 ((sizeof(curl_off_t) != sizeof(size_t)) &&
955 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
956 result = CURLE_OUT_OF_MEMORY;
960 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
962 /* Allocate even when size == 0. This satisfies the need of possible
963 later address compare to detect the COPYPOSTFIELDS mode, and
964 to mark that postfields is used rather than read function or
967 p = malloc((size_t)(data->set.postfieldsize?
968 data->set.postfieldsize:1));
971 result = CURLE_OUT_OF_MEMORY;
973 if(data->set.postfieldsize)
974 memcpy(p, argptr, (size_t)data->set.postfieldsize);
976 data->set.str[STRING_COPYPOSTFIELDS] = p;
981 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
982 data->set.httpreq = HTTPREQ_POST;
985 case CURLOPT_POSTFIELDS:
987 * Like above, but use static data instead of copying it.
989 data->set.postfields = va_arg(param, void *);
990 /* Release old copied data. */
991 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
992 data->set.httpreq = HTTPREQ_POST;
995 case CURLOPT_POSTFIELDSIZE:
997 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
998 * figure it out. Enables binary posts.
1000 bigsize = va_arg(param, long);
1002 if(data->set.postfieldsize < bigsize &&
1003 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1004 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1005 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1006 data->set.postfields = NULL;
1009 data->set.postfieldsize = bigsize;
1012 case CURLOPT_POSTFIELDSIZE_LARGE:
1014 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1015 * figure it out. Enables binary posts.
1017 bigsize = va_arg(param, curl_off_t);
1019 if(data->set.postfieldsize < bigsize &&
1020 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1021 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1022 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1023 data->set.postfields = NULL;
1026 data->set.postfieldsize = bigsize;
1029 case CURLOPT_HTTPPOST:
1031 * Set to make us do HTTP POST
1033 data->set.httppost = va_arg(param, struct curl_httppost *);
1034 data->set.httpreq = HTTPREQ_POST_FORM;
1035 data->set.opt_no_body = FALSE; /* this is implied */
1038 case CURLOPT_REFERER:
1040 * String to set in the HTTP Referer: field.
1042 if(data->change.referer_alloc) {
1043 Curl_safefree(data->change.referer);
1044 data->change.referer_alloc = FALSE;
1046 result = setstropt(&data->set.str[STRING_SET_REFERER],
1047 va_arg(param, char *));
1048 data->change.referer = data->set.str[STRING_SET_REFERER];
1051 case CURLOPT_USERAGENT:
1053 * String to use in the HTTP User-Agent field
1055 result = setstropt(&data->set.str[STRING_USERAGENT],
1056 va_arg(param, char *));
1059 case CURLOPT_HTTPHEADER:
1061 * Set a list with HTTP headers to use (or replace internals with)
1063 data->set.headers = va_arg(param, struct curl_slist *);
1066 case CURLOPT_HTTP200ALIASES:
1068 * Set a list of aliases for HTTP 200 in response header
1070 data->set.http200aliases = va_arg(param, struct curl_slist *);
1073 #if !defined(CURL_DISABLE_COOKIES)
1074 case CURLOPT_COOKIE:
1076 * Cookie string to send to the remote server in the request.
1078 result = setstropt(&data->set.str[STRING_COOKIE],
1079 va_arg(param, char *));
1082 case CURLOPT_COOKIEFILE:
1084 * Set cookie file to read and parse. Can be used multiple times.
1086 argptr = (char *)va_arg(param, void *);
1088 struct curl_slist *cl;
1089 /* append the cookie file name to the list of file names, and deal with
1091 cl = curl_slist_append(data->change.cookielist, argptr);
1093 curl_slist_free_all(data->change.cookielist);
1094 data->change.cookielist = NULL;
1095 return CURLE_OUT_OF_MEMORY;
1097 data->change.cookielist = cl; /* store the list for later use */
1101 case CURLOPT_COOKIEJAR:
1103 * Set cookie file name to dump all cookies to when we're done.
1105 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1106 va_arg(param, char *));
1109 * Activate the cookie parser. This may or may not already
1112 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1113 data->set.cookiesession);
1116 case CURLOPT_COOKIESESSION:
1118 * Set this option to TRUE to start a new "cookie session". It will
1119 * prevent the forthcoming read-cookies-from-file actions to accept
1120 * cookies that are marked as being session cookies, as they belong to a
1123 * In the original Netscape cookie spec, "session cookies" are cookies
1124 * with no expire date set. RFC2109 describes the same action if no
1125 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1126 * a 'Discard' action that can enforce the discard even for cookies that
1129 * We run mostly with the original cookie spec, as hardly anyone implements
1132 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1135 case CURLOPT_COOKIELIST:
1136 argptr = va_arg(param, char *);
1141 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1143 if(Curl_raw_equal(argptr, "ALL")) {
1144 /* clear all cookies */
1145 Curl_cookie_clearall(data->cookies);
1147 else if(Curl_raw_equal(argptr, "SESS")) {
1148 /* clear session cookies */
1149 Curl_cookie_clearsess(data->cookies);
1151 else if(Curl_raw_equal(argptr, "FLUSH")) {
1152 /* flush cookies to file */
1153 Curl_flush_cookies(data, 0);
1157 /* if cookie engine was not running, activate it */
1158 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1160 argptr = strdup(argptr);
1162 result = CURLE_OUT_OF_MEMORY;
1166 if(checkprefix("Set-Cookie:", argptr))
1167 /* HTTP Header format line */
1168 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1171 /* Netscape format line */
1172 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1177 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1180 #endif /* CURL_DISABLE_COOKIES */
1182 case CURLOPT_HTTPGET:
1184 * Set to force us do HTTP GET
1186 if(va_arg(param, long)) {
1187 data->set.httpreq = HTTPREQ_GET;
1188 data->set.upload = FALSE; /* switch off upload */
1189 data->set.opt_no_body = FALSE; /* this is implied */
1193 case CURLOPT_HTTP_VERSION:
1195 * This sets a requested HTTP version to be used. The value is one of
1196 * the listed enums in curl/curl.h.
1198 data->set.httpversion = va_arg(param, long);
1201 case CURLOPT_HTTPAUTH:
1203 * Set HTTP Authentication type BITMASK.
1208 unsigned long auth = va_arg(param, unsigned long);
1210 if(auth == CURLAUTH_NONE) {
1211 data->set.httpauth = auth;
1215 /* the DIGEST_IE bit is only used to set a special marker, for all the
1216 rest we need to handle it as normal DIGEST */
1217 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1219 if(auth & CURLAUTH_DIGEST_IE) {
1220 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1221 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1224 /* switch off bits we can't support */
1226 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1227 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1228 #elif !defined(NTLM_WB_ENABLED)
1229 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1231 #ifndef USE_HTTP_NEGOTIATE
1232 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1236 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1239 while(bitcheck < 31) {
1240 if(auth & (1UL << bitcheck++)) {
1246 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1248 data->set.httpauth = auth;
1252 #endif /* CURL_DISABLE_HTTP */
1254 case CURLOPT_CUSTOMREQUEST:
1256 * Set a custom string to use as request
1258 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1259 va_arg(param, char *));
1262 data->set.httpreq = HTTPREQ_CUSTOM;
1263 here, we continue as if we were using the already set type
1264 and this just changes the actual request keyword */
1267 #ifndef CURL_DISABLE_PROXY
1268 case CURLOPT_HTTPPROXYTUNNEL:
1270 * Tunnel operations through the proxy instead of normal proxy use
1272 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1275 case CURLOPT_PROXYPORT:
1277 * Explicitly set HTTP proxy port number.
1279 data->set.proxyport = va_arg(param, long);
1282 case CURLOPT_PROXYAUTH:
1284 * Set HTTP Authentication type BITMASK.
1289 unsigned long auth = va_arg(param, unsigned long);
1291 if(auth == CURLAUTH_NONE) {
1292 data->set.proxyauth = auth;
1296 /* the DIGEST_IE bit is only used to set a special marker, for all the
1297 rest we need to handle it as normal DIGEST */
1298 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1300 if(auth & CURLAUTH_DIGEST_IE) {
1301 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1302 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1304 /* switch off bits we can't support */
1306 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1307 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1308 #elif !defined(NTLM_WB_ENABLED)
1309 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1311 #ifndef USE_HTTP_NEGOTIATE
1312 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1316 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1319 while(bitcheck < 31) {
1320 if(auth & (1UL << bitcheck++)) {
1326 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1328 data->set.proxyauth = auth;
1334 * Set proxy server:port to use as HTTP proxy.
1336 * If the proxy is set to "" we explicitly say that we don't want to use a
1337 * proxy (even though there might be environment variables saying so).
1339 * Setting it to NULL, means no proxy but allows the environment variables
1342 result = setstropt(&data->set.str[STRING_PROXY],
1343 va_arg(param, char *));
1346 case CURLOPT_PROXYTYPE:
1348 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1350 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1353 case CURLOPT_PROXY_TRANSFER_MODE:
1355 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1357 switch (va_arg(param, long)) {
1359 data->set.proxy_transfer_mode = FALSE;
1362 data->set.proxy_transfer_mode = TRUE;
1365 /* reserve other values for future use */
1366 result = CURLE_UNKNOWN_OPTION;
1370 #endif /* CURL_DISABLE_PROXY */
1372 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1373 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1375 * Set gssapi service name
1377 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1378 va_arg(param, char *));
1381 case CURLOPT_SOCKS5_GSSAPI_NEC:
1383 * set flag for nec socks5 support
1385 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1389 case CURLOPT_WRITEHEADER:
1391 * Custom pointer to pass the header write callback function
1393 data->set.writeheader = (void *)va_arg(param, void *);
1395 case CURLOPT_ERRORBUFFER:
1397 * Error buffer provided by the caller to get the human readable
1400 data->set.errorbuffer = va_arg(param, char *);
1404 * FILE pointer to write to. Or possibly
1405 * used as argument to the write callback.
1407 data->set.out = va_arg(param, void *);
1409 case CURLOPT_FTPPORT:
1411 * Use FTP PORT, this also specifies which IP address to use
1413 result = setstropt(&data->set.str[STRING_FTPPORT],
1414 va_arg(param, char *));
1415 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1419 case CURLOPT_FTP_USE_EPRT:
1420 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1423 case CURLOPT_FTP_USE_EPSV:
1424 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1427 case CURLOPT_FTP_USE_PRET:
1428 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1431 case CURLOPT_FTP_SSL_CCC:
1432 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1435 case CURLOPT_FTP_SKIP_PASV_IP:
1437 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1438 * bypass of the IP address in PASV responses.
1440 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1443 case CURLOPT_INFILE:
1445 * FILE pointer to read the file to be uploaded from. Or possibly
1446 * used as argument to the read callback.
1448 data->set.in = va_arg(param, void *);
1450 case CURLOPT_INFILESIZE:
1452 * If known, this should inform curl about the file size of the
1453 * to-be-uploaded file.
1455 data->set.infilesize = va_arg(param, long);
1457 case CURLOPT_INFILESIZE_LARGE:
1459 * If known, this should inform curl about the file size of the
1460 * to-be-uploaded file.
1462 data->set.infilesize = va_arg(param, curl_off_t);
1464 case CURLOPT_LOW_SPEED_LIMIT:
1466 * The low speed limit that if transfers are below this for
1467 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1469 data->set.low_speed_limit=va_arg(param, long);
1471 case CURLOPT_MAX_SEND_SPEED_LARGE:
1473 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1474 * bytes per second the transfer is throttled..
1476 data->set.max_send_speed=va_arg(param, curl_off_t);
1478 case CURLOPT_MAX_RECV_SPEED_LARGE:
1480 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1481 * second the transfer is throttled..
1483 data->set.max_recv_speed=va_arg(param, curl_off_t);
1485 case CURLOPT_LOW_SPEED_TIME:
1487 * The low speed time that if transfers are below the set
1488 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1490 data->set.low_speed_time=va_arg(param, long);
1496 if(data->change.url_alloc) {
1497 /* the already set URL is allocated, free it first! */
1498 Curl_safefree(data->change.url);
1499 data->change.url_alloc = FALSE;
1501 result = setstropt(&data->set.str[STRING_SET_URL],
1502 va_arg(param, char *));
1503 data->change.url = data->set.str[STRING_SET_URL];
1507 * The port number to use when getting the URL
1509 data->set.use_port = va_arg(param, long);
1511 case CURLOPT_TIMEOUT:
1513 * The maximum time you allow curl to use for a single transfer
1516 data->set.timeout = va_arg(param, long) * 1000L;
1519 case CURLOPT_TIMEOUT_MS:
1520 data->set.timeout = va_arg(param, long);
1523 case CURLOPT_CONNECTTIMEOUT:
1525 * The maximum time you allow curl to use to connect.
1527 data->set.connecttimeout = va_arg(param, long) * 1000L;
1530 case CURLOPT_CONNECTTIMEOUT_MS:
1531 data->set.connecttimeout = va_arg(param, long);
1534 case CURLOPT_ACCEPTTIMEOUT_MS:
1536 * The maximum time you allow curl to wait for server connect
1538 data->set.accepttimeout = va_arg(param, long);
1541 case CURLOPT_USERPWD:
1543 * user:password;options to use in the operation
1545 result = setstropt_userpwd(va_arg(param, char *),
1546 &data->set.str[STRING_USERNAME],
1547 &data->set.str[STRING_PASSWORD],
1548 &data->set.str[STRING_OPTIONS]);
1550 case CURLOPT_USERNAME:
1552 * authentication user name to use in the operation
1554 result = setstropt(&data->set.str[STRING_USERNAME],
1555 va_arg(param, char *));
1557 case CURLOPT_PASSWORD:
1559 * authentication password to use in the operation
1561 result = setstropt(&data->set.str[STRING_PASSWORD],
1562 va_arg(param, char *));
1564 case CURLOPT_POSTQUOTE:
1566 * List of RAW FTP commands to use after a transfer
1568 data->set.postquote = va_arg(param, struct curl_slist *);
1570 case CURLOPT_PREQUOTE:
1572 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1574 data->set.prequote = va_arg(param, struct curl_slist *);
1578 * List of RAW FTP commands to use before a transfer
1580 data->set.quote = va_arg(param, struct curl_slist *);
1582 case CURLOPT_RESOLVE:
1584 * List of NAME:[address] names to populate the DNS cache with
1585 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1587 * Names added with this API will remain in the cache until explicitly
1588 * removed or the handle is cleaned up.
1590 * This API can remove any name from the DNS cache, but only entries
1591 * that aren't actually in use right now will be pruned immediately.
1593 data->set.resolve = va_arg(param, struct curl_slist *);
1594 data->change.resolve = data->set.resolve;
1596 case CURLOPT_PROGRESSFUNCTION:
1598 * Progress callback function
1600 data->set.fprogress = va_arg(param, curl_progress_callback);
1601 if(data->set.fprogress)
1602 data->progress.callback = TRUE; /* no longer internal */
1604 data->progress.callback = FALSE; /* NULL enforces internal */
1607 case CURLOPT_PROGRESSDATA:
1609 * Custom client data to pass to the progress callback
1611 data->set.progress_client = va_arg(param, void *);
1614 #ifndef CURL_DISABLE_PROXY
1615 case CURLOPT_PROXYUSERPWD:
1617 * user:password needed to use the proxy
1619 result = setstropt_userpwd(va_arg(param, char *),
1620 &data->set.str[STRING_PROXYUSERNAME],
1621 &data->set.str[STRING_PROXYPASSWORD], NULL);
1623 case CURLOPT_PROXYUSERNAME:
1625 * authentication user name to use in the operation
1627 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1628 va_arg(param, char *));
1630 case CURLOPT_PROXYPASSWORD:
1632 * authentication password to use in the operation
1634 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1635 va_arg(param, char *));
1637 case CURLOPT_NOPROXY:
1639 * proxy exception list
1641 result = setstropt(&data->set.str[STRING_NOPROXY],
1642 va_arg(param, char *));
1648 * What range of the file you want to transfer
1650 result = setstropt(&data->set.str[STRING_SET_RANGE],
1651 va_arg(param, char *));
1653 case CURLOPT_RESUME_FROM:
1655 * Resume transfer at the give file position
1657 data->set.set_resume_from = va_arg(param, long);
1659 case CURLOPT_RESUME_FROM_LARGE:
1661 * Resume transfer at the give file position
1663 data->set.set_resume_from = va_arg(param, curl_off_t);
1665 case CURLOPT_DEBUGFUNCTION:
1667 * stderr write callback.
1669 data->set.fdebug = va_arg(param, curl_debug_callback);
1671 * if the callback provided is NULL, it'll use the default callback
1674 case CURLOPT_DEBUGDATA:
1676 * Set to a void * that should receive all error writes. This
1677 * defaults to CURLOPT_STDERR for normal operations.
1679 data->set.debugdata = va_arg(param, void *);
1681 case CURLOPT_STDERR:
1683 * Set to a FILE * that should receive all error writes. This
1684 * defaults to stderr for normal operations.
1686 data->set.err = va_arg(param, FILE *);
1688 data->set.err = stderr;
1690 case CURLOPT_HEADERFUNCTION:
1692 * Set header write callback
1694 data->set.fwrite_header = va_arg(param, curl_write_callback);
1696 case CURLOPT_WRITEFUNCTION:
1698 * Set data write callback
1700 data->set.fwrite_func = va_arg(param, curl_write_callback);
1701 if(!data->set.fwrite_func) {
1702 data->set.is_fwrite_set = 0;
1703 /* When set to NULL, reset to our internal default function */
1704 data->set.fwrite_func = (curl_write_callback)fwrite;
1707 data->set.is_fwrite_set = 1;
1709 case CURLOPT_READFUNCTION:
1711 * Read data callback
1713 data->set.fread_func = va_arg(param, curl_read_callback);
1714 if(!data->set.fread_func) {
1715 data->set.is_fread_set = 0;
1716 /* When set to NULL, reset to our internal default function */
1717 data->set.fread_func = (curl_read_callback)fread;
1720 data->set.is_fread_set = 1;
1722 case CURLOPT_SEEKFUNCTION:
1724 * Seek callback. Might be NULL.
1726 data->set.seek_func = va_arg(param, curl_seek_callback);
1728 case CURLOPT_SEEKDATA:
1730 * Seek control callback. Might be NULL.
1732 data->set.seek_client = va_arg(param, void *);
1734 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1736 * "Convert from network encoding" callback
1738 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1740 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1742 * "Convert to network encoding" callback
1744 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1746 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1748 * "Convert from UTF-8 encoding" callback
1750 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1752 case CURLOPT_IOCTLFUNCTION:
1754 * I/O control callback. Might be NULL.
1756 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1758 case CURLOPT_IOCTLDATA:
1760 * I/O control data pointer. Might be NULL.
1762 data->set.ioctl_client = va_arg(param, void *);
1764 case CURLOPT_SSLCERT:
1766 * String that holds file name of the SSL certificate to use
1768 result = setstropt(&data->set.str[STRING_CERT],
1769 va_arg(param, char *));
1771 case CURLOPT_SSLCERTTYPE:
1773 * String that holds file type of the SSL certificate to use
1775 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1776 va_arg(param, char *));
1778 case CURLOPT_SSLKEY:
1780 * String that holds file name of the SSL key to use
1782 result = setstropt(&data->set.str[STRING_KEY],
1783 va_arg(param, char *));
1785 case CURLOPT_SSLKEYTYPE:
1787 * String that holds file type of the SSL key to use
1789 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1790 va_arg(param, char *));
1792 case CURLOPT_KEYPASSWD:
1794 * String that holds the SSL or SSH private key password.
1796 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1797 va_arg(param, char *));
1799 case CURLOPT_SSLENGINE:
1801 * String that holds the SSL crypto engine.
1803 argptr = va_arg(param, char *);
1804 if(argptr && argptr[0])
1805 result = Curl_ssl_set_engine(data, argptr);
1808 case CURLOPT_SSLENGINE_DEFAULT:
1810 * flag to set engine as default.
1812 result = Curl_ssl_set_engine_default(data);
1816 * Kludgy option to enable CRLF conversions. Subject for removal.
1818 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1821 case CURLOPT_INTERFACE:
1823 * Set what interface or address/hostname to bind the socket to when
1824 * performing an operation and thus what from-IP your connection will use.
1826 result = setstropt(&data->set.str[STRING_DEVICE],
1827 va_arg(param, char *));
1829 case CURLOPT_LOCALPORT:
1831 * Set what local port to bind the socket to when performing an operation.
1833 data->set.localport = curlx_sltous(va_arg(param, long));
1835 case CURLOPT_LOCALPORTRANGE:
1837 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1839 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1841 case CURLOPT_KRBLEVEL:
1843 * A string that defines the kerberos security level.
1845 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1846 va_arg(param, char *));
1847 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1849 case CURLOPT_GSSAPI_DELEGATION:
1851 * GSSAPI credential delegation
1853 data->set.gssapi_delegation = va_arg(param, long);
1855 case CURLOPT_SSL_VERIFYPEER:
1857 * Enable peer SSL verifying.
1859 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1861 case CURLOPT_SSL_VERIFYHOST:
1863 * Enable verification of the host name in the peer certificate
1865 arg = va_arg(param, long);
1867 /* Obviously people are not reading documentation and too many thought
1868 this argument took a boolean when it wasn't and misused it. We thus ban
1869 1 as a sensible input and we warn about its use. Then we only have the
1870 2 action internally stored as TRUE. */
1873 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1874 return CURLE_BAD_FUNCTION_ARGUMENT;
1877 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1880 /* since these two options are only possible to use on an OpenSSL-
1881 powered libcurl we #ifdef them on this condition so that libcurls
1882 built against other SSL libs will return a proper error when trying
1883 to set this option! */
1884 case CURLOPT_SSL_CTX_FUNCTION:
1886 * Set a SSL_CTX callback
1888 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1890 case CURLOPT_SSL_CTX_DATA:
1892 * Set a SSL_CTX callback parameter pointer
1894 data->set.ssl.fsslctxp = va_arg(param, void *);
1896 case CURLOPT_CERTINFO:
1897 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1900 case CURLOPT_CAINFO:
1902 * Set CA info for SSL connection. Specify file name of the CA certificate
1904 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1905 va_arg(param, char *));
1907 case CURLOPT_CAPATH:
1909 * Set CA path info for SSL connection. Specify directory name of the CA
1910 * certificates which have been prepared using openssl c_rehash utility.
1912 /* This does not work on windows. */
1913 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1914 va_arg(param, char *));
1916 case CURLOPT_CRLFILE:
1918 * Set CRL file info for SSL connection. Specify file name of the CRL
1919 * to check certificates revocation
1921 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1922 va_arg(param, char *));
1924 case CURLOPT_ISSUERCERT:
1926 * Set Issuer certificate file
1927 * to check certificates issuer
1929 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1930 va_arg(param, char *));
1932 case CURLOPT_TELNETOPTIONS:
1934 * Set a linked list of telnet options
1936 data->set.telnet_options = va_arg(param, struct curl_slist *);
1939 case CURLOPT_BUFFERSIZE:
1941 * The application kindly asks for a differently sized receive buffer.
1942 * If it seems reasonable, we'll use it.
1944 data->set.buffer_size = va_arg(param, long);
1946 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1947 (data->set.buffer_size < 1))
1948 data->set.buffer_size = 0; /* huge internal default */
1952 case CURLOPT_NOSIGNAL:
1954 * The application asks not to set any signal() or alarm() handlers,
1955 * even when using a timeout.
1957 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
1962 struct Curl_share *set;
1963 set = va_arg(param, struct Curl_share *);
1965 /* disconnect from old share, if any */
1967 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
1969 if(data->dns.hostcachetype == HCACHE_SHARED) {
1970 data->dns.hostcache = NULL;
1971 data->dns.hostcachetype = HCACHE_NONE;
1974 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
1975 if(data->share->cookies == data->cookies)
1976 data->cookies = NULL;
1979 if(data->share->sslsession == data->state.session)
1980 data->state.session = NULL;
1982 data->share->dirty--;
1984 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
1988 /* use new share if it set */
1992 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
1994 data->share->dirty++;
1996 if(data->share->hostcache) {
1997 /* use shared host cache */
1998 data->dns.hostcache = data->share->hostcache;
1999 data->dns.hostcachetype = HCACHE_SHARED;
2001 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2002 if(data->share->cookies) {
2003 /* use shared cookie list, first free own one if any */
2005 Curl_cookie_cleanup(data->cookies);
2006 /* enable cookies since we now use a share that uses cookies! */
2007 data->cookies = data->share->cookies;
2009 #endif /* CURL_DISABLE_HTTP */
2010 if(data->share->sslsession) {
2011 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2012 data->state.session = data->share->sslsession;
2014 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2017 /* check for host cache not needed,
2018 * it will be done by curl_easy_perform */
2022 case CURLOPT_PRIVATE:
2024 * Set private data pointer.
2026 data->set.private_data = va_arg(param, void *);
2029 case CURLOPT_MAXFILESIZE:
2031 * Set the maximum size of a file to download.
2033 data->set.max_filesize = va_arg(param, long);
2037 case CURLOPT_USE_SSL:
2039 * Make transfers attempt to use SSL/TLS.
2041 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2044 case CURLOPT_SSL_OPTIONS:
2045 arg = va_arg(param, long);
2046 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2050 case CURLOPT_FTPSSLAUTH:
2052 * Set a specific auth for FTP-SSL transfers.
2054 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2057 case CURLOPT_IPRESOLVE:
2058 data->set.ipver = va_arg(param, long);
2061 case CURLOPT_MAXFILESIZE_LARGE:
2063 * Set the maximum size of a file to download.
2065 data->set.max_filesize = va_arg(param, curl_off_t);
2068 case CURLOPT_TCP_NODELAY:
2070 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2073 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2076 case CURLOPT_FTP_ACCOUNT:
2077 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2078 va_arg(param, char *));
2081 case CURLOPT_IGNORE_CONTENT_LENGTH:
2082 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2085 case CURLOPT_CONNECT_ONLY:
2087 * No data transfer, set up connection and let application use the socket
2089 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2092 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2093 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2094 va_arg(param, char *));
2097 case CURLOPT_SOCKOPTFUNCTION:
2099 * socket callback function: called after socket() but before connect()
2101 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2104 case CURLOPT_SOCKOPTDATA:
2106 * socket callback data pointer. Might be NULL.
2108 data->set.sockopt_client = va_arg(param, void *);
2111 case CURLOPT_OPENSOCKETFUNCTION:
2113 * open/create socket callback function: called instead of socket(),
2116 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2119 case CURLOPT_OPENSOCKETDATA:
2121 * socket callback data pointer. Might be NULL.
2123 data->set.opensocket_client = va_arg(param, void *);
2126 case CURLOPT_CLOSESOCKETFUNCTION:
2128 * close socket callback function: called instead of close()
2129 * when shutting down a connection
2131 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2134 case CURLOPT_CLOSESOCKETDATA:
2136 * socket callback data pointer. Might be NULL.
2138 data->set.closesocket_client = va_arg(param, void *);
2141 case CURLOPT_SSL_SESSIONID_CACHE:
2142 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2146 /* we only include SSH options if explicitly built to support SSH */
2147 case CURLOPT_SSH_AUTH_TYPES:
2148 data->set.ssh_auth_types = va_arg(param, long);
2151 case CURLOPT_SSH_PUBLIC_KEYFILE:
2153 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2155 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2156 va_arg(param, char *));
2159 case CURLOPT_SSH_PRIVATE_KEYFILE:
2161 * Use this file instead of the $HOME/.ssh/id_dsa file
2163 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2164 va_arg(param, char *));
2166 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2168 * Option to allow for the MD5 of the host public key to be checked
2169 * for validation purposes.
2171 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2172 va_arg(param, char *));
2174 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2175 case CURLOPT_SSH_KNOWNHOSTS:
2177 * Store the file name to read known hosts from.
2179 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2180 va_arg(param, char *));
2183 case CURLOPT_SSH_KEYFUNCTION:
2184 /* setting to NULL is fine since the ssh.c functions themselves will
2185 then rever to use the internal default */
2186 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2189 case CURLOPT_SSH_KEYDATA:
2191 * Custom client data to pass to the SSH keyfunc callback
2193 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2195 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2197 #endif /* USE_LIBSSH2 */
2199 case CURLOPT_HTTP_TRANSFER_DECODING:
2201 * disable libcurl transfer encoding is used
2203 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2206 case CURLOPT_HTTP_CONTENT_DECODING:
2208 * raw data passed to the application when content encoding is used
2210 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2213 case CURLOPT_NEW_FILE_PERMS:
2215 * Uses these permissions instead of 0644
2217 data->set.new_file_perms = va_arg(param, long);
2220 case CURLOPT_NEW_DIRECTORY_PERMS:
2222 * Uses these permissions instead of 0755
2224 data->set.new_directory_perms = va_arg(param, long);
2227 case CURLOPT_ADDRESS_SCOPE:
2229 * We always get longs when passed plain numericals, but for this value we
2230 * know that an unsigned int will always hold the value so we blindly
2231 * typecast to this type
2233 data->set.scope = curlx_sltoui(va_arg(param, long));
2236 case CURLOPT_PROTOCOLS:
2237 /* set the bitmask for the protocols that are allowed to be used for the
2238 transfer, which thus helps the app which takes URLs from users or other
2239 external inputs and want to restrict what protocol(s) to deal
2240 with. Defaults to CURLPROTO_ALL. */
2241 data->set.allowed_protocols = va_arg(param, long);
2244 case CURLOPT_REDIR_PROTOCOLS:
2245 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2246 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2247 to be set in both bitmasks to be allowed to get redirected to. Defaults
2248 to all protocols except FILE and SCP. */
2249 data->set.redir_protocols = va_arg(param, long);
2252 case CURLOPT_MAIL_FROM:
2253 /* Set the SMTP mail originator */
2254 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2255 va_arg(param, char *));
2258 case CURLOPT_MAIL_AUTH:
2259 /* Set the SMTP auth originator */
2260 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2261 va_arg(param, char *));
2264 case CURLOPT_MAIL_RCPT:
2265 /* Set the list of mail recipients */
2266 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2269 case CURLOPT_SASL_IR:
2270 /* Enable/disable SASL initial response */
2271 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2274 case CURLOPT_RTSP_REQUEST:
2277 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2278 * Would this be better if the RTSPREQ_* were just moved into here?
2280 long curl_rtspreq = va_arg(param, long);
2281 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2282 switch(curl_rtspreq) {
2283 case CURL_RTSPREQ_OPTIONS:
2284 rtspreq = RTSPREQ_OPTIONS;
2287 case CURL_RTSPREQ_DESCRIBE:
2288 rtspreq = RTSPREQ_DESCRIBE;
2291 case CURL_RTSPREQ_ANNOUNCE:
2292 rtspreq = RTSPREQ_ANNOUNCE;
2295 case CURL_RTSPREQ_SETUP:
2296 rtspreq = RTSPREQ_SETUP;
2299 case CURL_RTSPREQ_PLAY:
2300 rtspreq = RTSPREQ_PLAY;
2303 case CURL_RTSPREQ_PAUSE:
2304 rtspreq = RTSPREQ_PAUSE;
2307 case CURL_RTSPREQ_TEARDOWN:
2308 rtspreq = RTSPREQ_TEARDOWN;
2311 case CURL_RTSPREQ_GET_PARAMETER:
2312 rtspreq = RTSPREQ_GET_PARAMETER;
2315 case CURL_RTSPREQ_SET_PARAMETER:
2316 rtspreq = RTSPREQ_SET_PARAMETER;
2319 case CURL_RTSPREQ_RECORD:
2320 rtspreq = RTSPREQ_RECORD;
2323 case CURL_RTSPREQ_RECEIVE:
2324 rtspreq = RTSPREQ_RECEIVE;
2327 rtspreq = RTSPREQ_NONE;
2330 data->set.rtspreq = rtspreq;
2335 case CURLOPT_RTSP_SESSION_ID:
2337 * Set the RTSP Session ID manually. Useful if the application is
2338 * resuming a previously established RTSP session
2340 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2341 va_arg(param, char *));
2344 case CURLOPT_RTSP_STREAM_URI:
2346 * Set the Stream URI for the RTSP request. Unless the request is
2347 * for generic server options, the application will need to set this.
2349 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2350 va_arg(param, char *));
2353 case CURLOPT_RTSP_TRANSPORT:
2355 * The content of the Transport: header for the RTSP request
2357 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2358 va_arg(param, char *));
2361 case CURLOPT_RTSP_CLIENT_CSEQ:
2363 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2364 * application is resuming a previously broken connection. The CSEQ
2365 * will increment from this new number henceforth.
2367 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2370 case CURLOPT_RTSP_SERVER_CSEQ:
2371 /* Same as the above, but for server-initiated requests */
2372 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2375 case CURLOPT_INTERLEAVEDATA:
2376 data->set.rtp_out = va_arg(param, void *);
2378 case CURLOPT_INTERLEAVEFUNCTION:
2379 /* Set the user defined RTP write function */
2380 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2383 case CURLOPT_WILDCARDMATCH:
2384 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2386 case CURLOPT_CHUNK_BGN_FUNCTION:
2387 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2389 case CURLOPT_CHUNK_END_FUNCTION:
2390 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2392 case CURLOPT_FNMATCH_FUNCTION:
2393 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2395 case CURLOPT_CHUNK_DATA:
2396 data->wildcard.customptr = va_arg(param, void *);
2398 case CURLOPT_FNMATCH_DATA:
2399 data->set.fnmatch_data = va_arg(param, void *);
2402 case CURLOPT_TLSAUTH_USERNAME:
2403 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2404 va_arg(param, char *));
2405 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2406 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2408 case CURLOPT_TLSAUTH_PASSWORD:
2409 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2410 va_arg(param, char *));
2411 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2412 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2414 case CURLOPT_TLSAUTH_TYPE:
2415 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2416 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2418 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2421 case CURLOPT_DNS_SERVERS:
2422 result = Curl_set_dns_servers(data, va_arg(param, char *));
2425 case CURLOPT_TCP_KEEPALIVE:
2426 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2428 case CURLOPT_TCP_KEEPIDLE:
2429 data->set.tcp_keepidle = va_arg(param, long);
2431 case CURLOPT_TCP_KEEPINTVL:
2432 data->set.tcp_keepintvl = va_arg(param, long);
2436 /* unknown tag and its companion, just ignore: */
2437 result = CURLE_UNKNOWN_OPTION;
2444 static void conn_free(struct connectdata *conn)
2449 /* possible left-overs from the async name resolvers */
2450 Curl_resolver_cancel(conn);
2452 /* close the SSL stuff before we close any sockets since they will/may
2453 write to the sockets */
2454 Curl_ssl_close(conn, FIRSTSOCKET);
2455 Curl_ssl_close(conn, SECONDARYSOCKET);
2457 /* close possibly still open sockets */
2458 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2459 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2460 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2461 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2463 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2464 Curl_ntlm_wb_cleanup(conn);
2467 Curl_safefree(conn->user);
2468 Curl_safefree(conn->passwd);
2469 Curl_safefree(conn->options);
2470 Curl_safefree(conn->proxyuser);
2471 Curl_safefree(conn->proxypasswd);
2472 Curl_safefree(conn->allocptr.proxyuserpwd);
2473 Curl_safefree(conn->allocptr.uagent);
2474 Curl_safefree(conn->allocptr.userpwd);
2475 Curl_safefree(conn->allocptr.accept_encoding);
2476 Curl_safefree(conn->allocptr.te);
2477 Curl_safefree(conn->allocptr.rangeline);
2478 Curl_safefree(conn->allocptr.ref);
2479 Curl_safefree(conn->allocptr.host);
2480 Curl_safefree(conn->allocptr.cookiehost);
2481 Curl_safefree(conn->allocptr.rtsp_transport);
2482 Curl_safefree(conn->trailer);
2483 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2484 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2485 Curl_safefree(conn->master_buffer);
2487 Curl_llist_destroy(conn->send_pipe, NULL);
2488 Curl_llist_destroy(conn->recv_pipe, NULL);
2490 conn->send_pipe = NULL;
2491 conn->recv_pipe = NULL;
2493 Curl_safefree(conn->localdev);
2494 Curl_free_ssl_config(&conn->ssl_config);
2496 free(conn); /* free all the connection oriented data */
2499 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2501 struct SessionHandle *data;
2503 return CURLE_OK; /* this is closed and fine already */
2507 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2511 if(conn->dns_entry != NULL) {
2512 Curl_resolv_unlock(data, conn->dns_entry);
2513 conn->dns_entry = NULL;
2516 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2519 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2520 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2522 /* Authentication data is a mix of connection-related and sessionhandle-
2523 related stuff. NTLM is connection-related so when we close the shop
2527 data->state.authhost.done = FALSE;
2528 data->state.authhost.picked =
2529 data->state.authhost.want;
2532 if(has_proxy_ntlm) {
2533 data->state.authproxy.done = FALSE;
2534 data->state.authproxy.picked =
2535 data->state.authproxy.want;
2538 if(has_host_ntlm || has_proxy_ntlm)
2539 data->state.authproblem = FALSE;
2542 /* Cleanup NTLM connection-related data */
2543 Curl_http_ntlm_cleanup(conn);
2545 /* Cleanup possible redirect junk */
2546 if(data->req.newurl) {
2547 free(data->req.newurl);
2548 data->req.newurl = NULL;
2551 if(conn->handler->disconnect)
2552 /* This is set if protocol-specific cleanups should be made */
2553 conn->handler->disconnect(conn, dead_connection);
2555 /* unlink ourselves! */
2556 infof(data, "Closing connection %d\n", conn->connection_id);
2557 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2559 #if defined(USE_LIBIDN)
2560 if(conn->host.encalloc)
2561 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2562 with idn_free() since this was allocated
2564 if(conn->proxy.encalloc)
2565 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2566 freed with idn_free() since this was
2567 allocated by libidn */
2568 #elif defined(USE_WIN32_IDN)
2569 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2570 idn_free() since this was allocated by
2571 curl_win32_idn_to_ascii */
2572 if(conn->proxy.encalloc)
2573 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2574 with idn_free() since this was allocated by
2575 curl_win32_idn_to_ascii */
2578 Curl_ssl_close(conn, FIRSTSOCKET);
2580 /* Indicate to all handles on the pipe that we're dead */
2581 if(Curl_multi_pipeline_enabled(data->multi)) {
2582 signalPipeClose(conn->send_pipe, TRUE);
2583 signalPipeClose(conn->recv_pipe, TRUE);
2587 data->state.current_conn = NULL;
2588 Curl_speedinit(data);
2594 * This function should return TRUE if the socket is to be assumed to
2595 * be dead. Most commonly this happens when the server has closed the
2596 * connection due to inactivity.
2598 static bool SocketIsDead(curl_socket_t sock)
2601 bool ret_val = TRUE;
2603 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2611 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2612 const struct connectdata *conn)
2614 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2615 Curl_multi_pipeline_enabled(handle->multi) &&
2616 (handle->set.httpreq == HTTPREQ_GET ||
2617 handle->set.httpreq == HTTPREQ_HEAD) &&
2618 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2624 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2626 return Curl_multi_pipeline_enabled(handle->multi);
2629 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2630 struct curl_llist *pipeline)
2632 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2633 return CURLE_OUT_OF_MEMORY;
2634 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2638 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2639 struct curl_llist *pipeline)
2641 struct curl_llist_element *curr;
2643 curr = pipeline->head;
2645 if(curr->ptr == handle) {
2646 Curl_llist_remove(pipeline, curr, NULL);
2647 return 1; /* we removed a handle */
2655 #if 0 /* this code is saved here as it is useful for debugging purposes */
2656 static void Curl_printPipeline(struct curl_llist *pipeline)
2658 struct curl_llist_element *curr;
2660 curr = pipeline->head;
2662 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2663 infof(data, "Handle in pipeline: %s\n", data->state.path);
2669 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2671 struct curl_llist_element *curr = pipeline->head;
2673 return (struct SessionHandle *) curr->ptr;
2679 /* remove the specified connection from all (possible) pipelines and related
2681 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2682 struct connectdata *conn)
2684 bool recv_head = (conn->readchannel_inuse &&
2685 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2687 bool send_head = (conn->writechannel_inuse &&
2688 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2690 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2691 conn->readchannel_inuse = FALSE;
2692 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2693 conn->writechannel_inuse = FALSE;
2696 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2698 struct curl_llist_element *curr;
2703 curr = pipeline->head;
2705 struct curl_llist_element *next = curr->next;
2706 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2708 #ifdef DEBUGBUILD /* debug-only code */
2709 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2711 infof(data, "signalPipeClose() found BAAD easy handle\n");
2716 data->state.pipe_broke = TRUE;
2717 Curl_multi_handlePipeBreak(data);
2718 Curl_llist_remove(pipeline, curr, NULL);
2724 * This function finds the connection in the connection
2725 * cache that has been unused for the longest time.
2727 * Returns the pointer to the oldest idle connection, or NULL if none was
2730 static struct connectdata *
2731 find_oldest_idle_connection(struct SessionHandle *data)
2733 struct conncache *bc = data->state.conn_cache;
2734 struct curl_hash_iterator iter;
2735 struct curl_llist_element *curr;
2736 struct curl_hash_element *he;
2740 struct connectdata *conn_candidate = NULL;
2741 struct connectbundle *bundle;
2745 Curl_hash_start_iterate(bc->hash, &iter);
2747 he = Curl_hash_next_element(&iter);
2749 struct connectdata *conn;
2753 curr = bundle->conn_list->head;
2758 /* Set higher score for the age passed since the connection was used */
2759 score = Curl_tvdiff(now, conn->now);
2761 if(score > highscore) {
2763 conn_candidate = conn;
2769 he = Curl_hash_next_element(&iter);
2772 return conn_candidate;
2776 * This function finds the connection in the connection
2777 * bundle that has been unused for the longest time.
2779 * Returns the pointer to the oldest idle connection, or NULL if none was
2782 static struct connectdata *
2783 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2784 struct connectbundle *bundle)
2786 struct curl_llist_element *curr;
2790 struct connectdata *conn_candidate = NULL;
2791 struct connectdata *conn;
2797 curr = bundle->conn_list->head;
2802 /* Set higher score for the age passed since the connection was used */
2803 score = Curl_tvdiff(now, conn->now);
2805 if(score > highscore) {
2807 conn_candidate = conn;
2813 return conn_candidate;
2817 * Given one filled in connection struct (named needle), this function should
2818 * detect if there already is one that has all the significant details
2819 * exactly the same and thus should be used instead.
2821 * If there is a match, this function returns TRUE - and has marked the
2822 * connection as 'in-use'. It must later be called with ConnectionDone() to
2823 * return back to 'idle' (unused) state.
2825 * The force_reuse flag is set if the connection must be used, even if
2826 * the pipelining strategy wants to open a new connection instead of reusing.
2829 ConnectionExists(struct SessionHandle *data,
2830 struct connectdata *needle,
2831 struct connectdata **usethis,
2834 struct connectdata *check;
2835 struct connectdata *chosen = 0;
2836 bool canPipeline = IsPipeliningPossible(data, needle);
2837 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2838 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2839 struct connectbundle *bundle;
2841 *force_reuse = FALSE;
2843 /* We can't pipe if the site is blacklisted */
2844 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2845 canPipeline = FALSE;
2848 /* Look up the bundle with all the connections to this
2850 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2853 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2854 size_t best_pipe_len = max_pipe_len;
2855 struct curl_llist_element *curr;
2857 infof(data, "Found bundle for host %s: %p\n", needle->host.name, bundle);
2859 /* We can't pipe if we don't know anything about the server */
2860 if(canPipeline && !bundle->server_supports_pipelining) {
2861 infof(data, "Server doesn't support pipelining\n");
2862 canPipeline = FALSE;
2865 curr = bundle->conn_list->head;
2868 bool credentialsMatch = FALSE;
2872 * Note that if we use a HTTP proxy, we check connections to that
2873 * proxy and not to the actual remote server.
2878 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2880 if(!pipeLen && !check->inuse) {
2881 /* The check for a dead socket makes sense only if there are no
2882 handles in pipeline and the connection isn't already marked in
2885 if(check->handler->protocol & CURLPROTO_RTSP)
2886 /* RTSP is a special case due to RTP interleaving */
2887 dead = Curl_rtsp_connisdead(check);
2889 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2893 infof(data, "Connection %d seems to be dead!\n",
2894 check->connection_id);
2896 /* disconnect resources */
2897 Curl_disconnect(check, /* dead_connection */ TRUE);
2903 /* Make sure the pipe has only GET requests */
2904 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2905 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2907 if(!IsPipeliningPossible(sh, check))
2911 if(!IsPipeliningPossible(rh, check))
2917 /* can only happen within multi handles, and means that another easy
2918 handle is using this connection */
2922 if(Curl_resolver_asynch()) {
2923 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2924 completed yet and until then we don't re-use this connection */
2925 if(!check->ip_addr_str[0]) {
2927 "Connection #%ld is still name resolving, can't reuse\n",
2928 check->connection_id);
2933 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2934 check->bits.close) {
2935 /* Don't pick a connection that hasn't connected yet or that is going
2937 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2938 check->connection_id);
2940 if(check->recv_pipe->size > 0) {
2942 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2943 check->connection_id);
2950 if((needle->handler->flags&PROTOPT_SSL) !=
2951 (check->handler->flags&PROTOPT_SSL))
2952 /* don't do mixed SSL and non-SSL connections */
2953 if(!(needle->handler->protocol & check->handler->protocol))
2954 /* except protocols that have been upgraded via TLS */
2957 if(needle->handler->flags&PROTOPT_SSL) {
2958 if((data->set.ssl.verifypeer != check->verifypeer) ||
2959 (data->set.ssl.verifyhost != check->verifyhost))
2963 if(needle->bits.proxy != check->bits.proxy)
2964 /* don't do mixed proxy and non-proxy connections */
2967 if(!canPipeline && check->inuse)
2968 /* this request can't be pipelined but the checked connection is
2969 already in use so we skip it */
2972 if(needle->localdev || needle->localport) {
2973 /* If we are bound to a specific local end (IP+port), we must not
2974 re-use a random other one, although if we didn't ask for a
2975 particular one we can reuse one that was bound.
2977 This comparison is a bit rough and too strict. Since the input
2978 parameters can be specified in numerous ways and still end up the
2979 same it would take a lot of processing to make it really accurate.
2980 Instead, this matching will assume that re-uses of bound connections
2981 will most likely also re-use the exact same binding parameters and
2982 missing out a few edge cases shouldn't hurt anyone very much.
2984 if((check->localport != needle->localport) ||
2985 (check->localportrange != needle->localportrange) ||
2987 !needle->localdev ||
2988 strcmp(check->localdev, needle->localdev))
2992 if((needle->handler->protocol & CURLPROTO_FTP) ||
2993 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
2994 /* This is FTP or HTTP+NTLM, verify that we're using the same name
2995 and password as well */
2996 if(!strequal(needle->user, check->user) ||
2997 !strequal(needle->passwd, check->passwd)) {
2998 /* one of them was different */
3001 credentialsMatch = TRUE;
3004 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3005 (needle->bits.httpproxy && check->bits.httpproxy &&
3006 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3007 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3008 (needle->port == check->port))) {
3009 /* The requested connection does not use a HTTP proxy or it uses SSL or
3010 it is a non-SSL protocol tunneled over the same http proxy name and
3011 port number or it is a non-SSL protocol which is allowed to be
3014 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3015 needle->handler->protocol & check->handler->protocol) &&
3016 Curl_raw_equal(needle->host.name, check->host.name) &&
3017 needle->remote_port == check->remote_port) {
3018 if(needle->handler->flags & PROTOPT_SSL) {
3019 /* This is a SSL connection so verify that we're using the same
3020 SSL options as well */
3021 if(!Curl_ssl_config_matches(&needle->ssl_config,
3022 &check->ssl_config)) {
3024 "Connection #%ld has different SSL parameters, "
3026 check->connection_id));
3029 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3031 "Connection #%ld has not started SSL connect, "
3033 check->connection_id));
3040 else { /* The requested needle connection is using a proxy,
3041 is the checked one using the same host, port and type? */
3042 if(check->bits.proxy &&
3043 (needle->proxytype == check->proxytype) &&
3044 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3045 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3046 needle->port == check->port) {
3047 /* This is the same proxy connection, use it! */
3053 /* If we are looking for an NTLM connection, check if this is already
3054 authenticating with the right credentials. If not, keep looking so
3055 that we can reuse NTLM connections if possible. (Especially we
3056 must not reuse the same connection if partway through
3059 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3062 /* We must use this connection, no other */
3063 *force_reuse = TRUE;
3071 /* We can pipeline if we want to. Let's continue looking for
3072 the optimal connection to use, i.e the shortest pipe that is not
3076 /* We have the optimal connection. Let's stop looking. */
3081 /* We can't use the connection if the pipe is full */
3082 if(pipeLen >= max_pipe_len)
3085 /* We can't use the connection if the pipe is penalized */
3086 if(Curl_pipeline_penalized(data, check))
3089 if(pipeLen < best_pipe_len) {
3090 /* This connection has a shorter pipe so far. We'll pick this
3091 and continue searching */
3093 best_pipe_len = pipeLen;
3098 /* We have found a connection. Let's stop searching. */
3108 return TRUE; /* yes, we found one to use! */
3111 return FALSE; /* no matching connecting exists */
3114 /* Mark the connection as 'idle', or close it if the cache is full.
3115 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3117 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3119 /* data->multi->maxconnects can be negative, deal with it. */
3120 size_t maxconnects =
3121 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3122 struct connectdata *conn_candidate = NULL;
3124 /* Mark the current connection as 'unused' */
3125 conn->inuse = FALSE;
3127 if(maxconnects > 0 &&
3128 data->state.conn_cache->num_connections > maxconnects) {
3129 infof(data, "Connection cache is full, closing the oldest one.\n");
3131 conn_candidate = find_oldest_idle_connection(data);
3133 if(conn_candidate) {
3134 /* Set the connection's owner correctly */
3135 conn_candidate->data = data;
3137 /* the winner gets the honour of being disconnected */
3138 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3142 return (conn_candidate == conn) ? FALSE : TRUE;
3146 * The given input connection struct pointer is to be stored in the connection
3147 * cache. If the cache is already full, least interesting existing connection
3148 * (if any) gets closed.
3150 * The given connection should be unique. That must've been checked prior to
3153 static CURLcode ConnectionStore(struct SessionHandle *data,
3154 struct connectdata *conn)
3156 static int connection_id_counter = 0;
3160 /* Assign a number to the connection for easier tracking in the log
3162 conn->connection_id = connection_id_counter++;
3164 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3165 if(result != CURLE_OK)
3166 conn->connection_id = -1;
3171 /* after a TCP connection to the proxy has been verified, this function does
3172 the next magic step.
3174 Note: this function's sub-functions call failf()
3177 CURLcode Curl_connected_proxy(struct connectdata *conn)
3179 if(!conn->bits.proxy)
3182 switch(conn->proxytype) {
3183 #ifndef CURL_DISABLE_PROXY
3184 case CURLPROXY_SOCKS5:
3185 case CURLPROXY_SOCKS5_HOSTNAME:
3186 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3187 conn->host.name, conn->remote_port,
3190 case CURLPROXY_SOCKS4:
3191 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3192 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3194 case CURLPROXY_SOCKS4A:
3195 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3196 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3198 #endif /* CURL_DISABLE_PROXY */
3199 case CURLPROXY_HTTP:
3200 case CURLPROXY_HTTP_1_0:
3201 /* do nothing here. handled later. */
3205 } /* switch proxytype */
3210 static CURLcode ConnectPlease(struct SessionHandle *data,
3211 struct connectdata *conn,
3215 Curl_addrinfo *addr;
3216 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3217 char *hostname = conn->bits.proxy?conn->proxy.name:conn->host.name;
3219 infof(data, "About to connect() to %s%s port %ld (#%ld)\n",
3220 conn->bits.proxy?"proxy ":"",
3221 hostname, conn->port, conn->connection_id);
3226 /*************************************************************
3227 * Connect to server/proxy
3228 *************************************************************/
3229 result= Curl_connecthost(conn,
3231 &conn->sock[FIRSTSOCKET],
3234 if(CURLE_OK == result) {
3235 /* All is cool, we store the current information */
3236 conn->ip_addr = addr;
3239 result = Curl_connected_proxy(conn);
3241 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
3242 Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
3248 *connected = FALSE; /* mark it as not connected */
3254 * verboseconnect() displays verbose information after a connect
3256 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3257 void Curl_verboseconnect(struct connectdata *conn)
3259 if(conn->data->set.verbose)
3260 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3261 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3262 conn->ip_addr_str, conn->port, conn->connection_id);
3266 int Curl_protocol_getsock(struct connectdata *conn,
3267 curl_socket_t *socks,
3270 if(conn->handler->proto_getsock)
3271 return conn->handler->proto_getsock(conn, socks, numsocks);
3272 return GETSOCK_BLANK;
3275 int Curl_doing_getsock(struct connectdata *conn,
3276 curl_socket_t *socks,
3279 if(conn && conn->handler->doing_getsock)
3280 return conn->handler->doing_getsock(conn, socks, numsocks);
3281 return GETSOCK_BLANK;
3285 * We are doing protocol-specific connecting and this is being called over and
3286 * over from the multi interface until the connection phase is done on
3290 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3293 CURLcode result=CURLE_OK;
3295 if(conn && conn->handler->connecting) {
3297 result = conn->handler->connecting(conn, done);
3306 * We are DOING this is being called over and over from the multi interface
3307 * until the DOING phase is done on protocol layer.
3310 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3312 CURLcode result=CURLE_OK;
3314 if(conn && conn->handler->doing) {
3316 result = conn->handler->doing(conn, done);
3325 * We have discovered that the TCP connection has been successful, we can now
3326 * proceed with some action.
3329 CURLcode Curl_protocol_connect(struct connectdata *conn,
3330 bool *protocol_done)
3332 CURLcode result=CURLE_OK;
3334 *protocol_done = FALSE;
3336 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3337 /* We already are connected, get back. This may happen when the connect
3338 worked fine in the first call, like when we connect to a local server
3339 or proxy. Note that we don't know if the protocol is actually done.
3341 Unless this protocol doesn't have any protocol-connect callback, as
3342 then we know we're done. */
3343 if(!conn->handler->connecting)
3344 *protocol_done = TRUE;
3349 if(!conn->bits.protoconnstart) {
3351 result = Curl_proxy_connect(conn);
3355 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3356 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3357 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3358 before proceeding further. Return CURLE_OK so we'll be called again */
3361 if(conn->handler->connect_it) {
3362 /* is there a protocol-specific connect() procedure? */
3364 /* Call the protocol-specific connect function */
3365 result = conn->handler->connect_it(conn, protocol_done);
3368 *protocol_done = TRUE;
3370 /* it has started, possibly even completed but that knowledge isn't stored
3373 conn->bits.protoconnstart = TRUE;
3376 return result; /* pass back status */
3380 * Helpers for IDNA convertions.
3382 static bool is_ASCII_name(const char *hostname)
3384 const unsigned char *ch = (const unsigned char*)hostname;
3395 * Check if characters in hostname is allowed in Top Level Domain.
3397 static bool tld_check_name(struct SessionHandle *data,
3398 const char *ace_hostname)
3401 char *uc_name = NULL;
3403 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3404 const char *tld_errmsg = "<no msg>";
3409 /* Convert (and downcase) ACE-name back into locale's character set */
3410 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3411 if(rc != IDNA_SUCCESS)
3414 rc = tld_check_lz(uc_name, &err_pos, NULL);
3415 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3416 #ifdef HAVE_TLD_STRERROR
3417 if(rc != TLD_SUCCESS)
3418 tld_errmsg = tld_strerror((Tld_rc)rc);
3420 if(rc == TLD_INVALID)
3421 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3422 tld_errmsg, err_pos, uc_name[err_pos],
3423 uc_name[err_pos] & 255);
3424 else if(rc != TLD_SUCCESS)
3425 infof(data, "WARNING: TLD check for %s failed; %s\n",
3426 uc_name, tld_errmsg);
3427 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3430 if(rc != TLD_SUCCESS)
3438 * Perform any necessary IDN conversion of hostname
3440 static void fix_hostname(struct SessionHandle *data,
3441 struct connectdata *conn, struct hostname *host)
3446 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3450 /* set the name we use to display the host name */
3451 host->dispname = host->name;
3452 if(!is_ASCII_name(host->name)) {
3454 /*************************************************************
3455 * Check name for non-ASCII and convert hostname to ACE form.
3456 *************************************************************/
3457 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3458 char *ace_hostname = NULL;
3459 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3460 infof (data, "Input domain encoded as `%s'\n",
3461 stringprep_locale_charset ());
3462 if(rc != IDNA_SUCCESS)
3463 infof(data, "Failed to convert %s to ACE; %s\n",
3464 host->name, Curl_idn_strerror(conn,rc));
3466 /* tld_check_name() displays a warning if the host name contains
3467 "illegal" characters for this TLD */
3468 (void)tld_check_name(data, ace_hostname);
3470 host->encalloc = ace_hostname;
3471 /* change the name pointer to point to the encoded hostname */
3472 host->name = host->encalloc;
3475 #elif defined(USE_WIN32_IDN)
3476 /*************************************************************
3477 * Check name for non-ASCII and convert hostname to ACE form.
3478 *************************************************************/
3479 char *ace_hostname = NULL;
3480 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3482 infof(data, "Failed to convert %s to ACE;\n",
3485 host->encalloc = ace_hostname;
3486 /* change the name pointer to point to the encoded hostname */
3487 host->name = host->encalloc;
3490 infof(data, "IDN support not present, can't parse Unicode domains\n");
3495 static void llist_dtor(void *user, void *element)
3503 * Allocate and initialize a new connectdata object.
3505 static struct connectdata *allocate_conn(struct SessionHandle *data)
3507 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3511 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3512 already from start to avoid NULL
3513 situations and checks */
3515 /* and we setup a few fields in case we end up actually using this struct */
3517 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3518 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3519 conn->connection_id = -1; /* no ID */
3520 conn->port = -1; /* unknown at this point */
3522 /* Default protocol-independent behavior doesn't support persistent
3523 connections, so we set this to force-close. Protocols that support
3524 this need to set this to FALSE in their "curl_do" functions. */
3525 conn->bits.close = TRUE;
3527 /* Store creation time to help future close decision making */
3528 conn->created = Curl_tvnow();
3530 conn->data = data; /* Setup the association between this connection
3531 and the SessionHandle */
3533 conn->proxytype = data->set.proxytype; /* type */
3535 #ifdef CURL_DISABLE_PROXY
3537 conn->bits.proxy = FALSE;
3538 conn->bits.httpproxy = FALSE;
3539 conn->bits.proxy_user_passwd = FALSE;
3540 conn->bits.tunnel_proxy = FALSE;
3542 #else /* CURL_DISABLE_PROXY */
3544 /* note that these two proxy bits are now just on what looks to be
3545 requested, they may be altered down the road */
3546 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3547 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3548 conn->bits.httpproxy = (conn->bits.proxy &&
3549 (conn->proxytype == CURLPROXY_HTTP ||
3550 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3551 conn->bits.proxy_user_passwd =
3552 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3553 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3555 #endif /* CURL_DISABLE_PROXY */
3557 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3558 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3559 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3561 conn->verifypeer = data->set.ssl.verifypeer;
3562 conn->verifyhost = data->set.ssl.verifyhost;
3564 conn->ip_version = data->set.ipver;
3566 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3567 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3568 conn->ntlm_auth_hlpr_pid = 0;
3569 conn->challenge_header = NULL;
3570 conn->response_header = NULL;
3573 if(Curl_multi_pipeline_enabled(data->multi) &&
3574 !conn->master_buffer) {
3575 /* Allocate master_buffer to be used for pipelining */
3576 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3577 if(!conn->master_buffer)
3581 /* Initialize the pipeline lists */
3582 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3583 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3584 if(!conn->send_pipe || !conn->recv_pipe)
3587 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
3588 conn->data_prot = PROT_CLEAR;
3591 /* Store the local bind parameters that will be used for this connection */
3592 if(data->set.str[STRING_DEVICE]) {
3593 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3597 conn->localportrange = data->set.localportrange;
3598 conn->localport = data->set.localport;
3600 /* the close socket stuff needs to be copied to the connection struct as
3601 it may live on without (this specific) SessionHandle */
3602 conn->fclosesocket = data->set.fclosesocket;
3603 conn->closesocket_client = data->set.closesocket_client;
3608 Curl_llist_destroy(conn->send_pipe, NULL);
3609 Curl_llist_destroy(conn->recv_pipe, NULL);
3611 conn->send_pipe = NULL;
3612 conn->recv_pipe = NULL;
3614 Curl_safefree(conn->master_buffer);
3615 Curl_safefree(conn->localdev);
3616 Curl_safefree(conn);
3620 static CURLcode findprotocol(struct SessionHandle *data,
3621 struct connectdata *conn,
3622 const char *protostr)
3624 const struct Curl_handler * const *pp;
3625 const struct Curl_handler *p;
3627 /* Scan protocol handler table and match against 'protostr' to set a few
3628 variables based on the URL. Now that the handler may be changed later
3629 when the protocol specific setup function is called. */
3630 for(pp = protocols; (p = *pp) != NULL; pp++) {
3631 if(Curl_raw_equal(p->scheme, protostr)) {
3632 /* Protocol found in table. Check if allowed */
3633 if(!(data->set.allowed_protocols & p->protocol))
3637 /* it is allowed for "normal" request, now do an extra check if this is
3638 the result of a redirect */
3639 if(data->state.this_is_a_follow &&
3640 !(data->set.redir_protocols & p->protocol))
3644 /* Perform setup complement if some. */
3645 conn->handler = conn->given = p;
3647 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3653 /* The protocol was not found in the table, but we don't have to assign it
3654 to anything since it is already assigned to a dummy-struct in the
3655 create_conn() function when the connectdata struct is allocated. */
3656 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3659 return CURLE_UNSUPPORTED_PROTOCOL;
3663 * Parse URL and fill in the relevant members of the connection struct.
3665 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3666 struct connectdata *conn,
3668 char *user, char *passwd, char *options)
3672 char *path = data->state.path;
3678 bool rebuild_url = FALSE;
3680 *prot_missing = FALSE;
3682 /*************************************************************
3685 * We need to parse the url even when using the proxy, because we will need
3686 * the hostname and port in case we are trying to SSL connect through the
3687 * proxy -- and we don't know if we will need to use SSL until we parse the
3689 ************************************************************/
3690 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3692 Curl_raw_equal(protobuf, "file")) {
3693 if(path[0] == '/' && path[1] == '/') {
3694 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3695 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3696 * file://localhost/<path> is similar to how other schemes treat missing
3697 * hostnames. See RFC 1808. */
3699 /* This cannot be done with strcpy() in a portable manner, since the
3700 memory areas overlap! */
3701 memmove(path, path + 2, strlen(path + 2)+1);
3704 * we deal with file://<host>/<path> differently since it supports no
3705 * hostname other than "localhost" and "127.0.0.1", which is unique among
3706 * the URL protocols specified in RFC 1738
3708 if(path[0] != '/') {
3709 /* the URL included a host name, we ignore host names in file:// URLs
3710 as the standards don't define what to do with them */
3711 char *ptr=strchr(path, '/');
3713 /* there was a slash present
3715 RFC1738 (section 3.1, page 5) says:
3717 The rest of the locator consists of data specific to the scheme,
3718 and is known as the "url-path". It supplies the details of how the
3719 specified resource can be accessed. Note that the "/" between the
3720 host (or port) and the url-path is NOT part of the url-path.
3722 As most agents use file://localhost/foo to get '/foo' although the
3723 slash preceding foo is a separator and not a slash for the path,
3724 a URL as file://localhost//foo must be valid as well, to refer to
3725 the same file with an absolute path.
3728 if(ptr[1] && ('/' == ptr[1]))
3729 /* if there was two slashes, we skip the first one as that is then
3730 used truly as a separator */
3733 /* This cannot be made with strcpy, as the memory chunks overlap! */
3734 memmove(path, ptr, strlen(ptr)+1);
3738 protop = "file"; /* protocol string */
3744 if(2 > sscanf(data->change.url,
3745 "%15[^\n:]://%[^\n/?]%[^\n]",
3747 conn->host.name, path)) {
3750 * The URL was badly formatted, let's try the browser-style _without_
3751 * protocol specified like 'http://'.
3753 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3756 * We couldn't even get this format.
3757 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3758 * assigned, but the return value is EOF!
3760 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3761 if(!(rc == -1 && *conn->host.name))
3764 failf(data, "<url> malformed");
3765 return CURLE_URL_MALFORMAT;
3770 * Since there was no protocol part specified, we guess what protocol it
3771 * is based on the first letters of the server name.
3774 /* Note: if you add a new protocol, please update the list in
3775 * lib/version.c too! */
3777 if(checkprefix("FTP.", conn->host.name))
3779 else if(checkprefix("DICT.", conn->host.name))
3781 else if(checkprefix("LDAP.", conn->host.name))
3783 else if(checkprefix("IMAP.", conn->host.name))
3785 else if(checkprefix("SMTP.", conn->host.name))
3787 else if(checkprefix("POP3.", conn->host.name))
3793 *prot_missing = TRUE; /* not given in URL */
3799 /* We search for '?' in the host name (but only on the right side of a
3800 * @-letter to allow ?-letters in username and password) to handle things
3801 * like http://example.com?param= (notice the missing '/').
3803 at = strchr(conn->host.name, '@');
3805 query = strchr(at+1, '?');
3807 query = strchr(conn->host.name, '?');
3810 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3811 a slash after the '?', that is where the path currently begins and the
3812 '?string' is still part of the host name.
3814 We must move the trailing part from the host name and put it first in
3815 the path. And have it all prefixed with a slash.
3818 size_t hostlen = strlen(query);
3819 size_t pathlen = strlen(path);
3821 /* move the existing path plus the zero byte forward, to make room for
3822 the host-name part */
3823 memmove(path+hostlen+1, path, pathlen+1);
3825 /* now copy the trailing host part in front of the existing path */
3826 memcpy(path+1, query, hostlen);
3828 path[0]='/'; /* prepend the missing slash */
3831 *query=0; /* now cut off the hostname at the ? */
3834 /* if there's no path set, use a single slash */
3839 /* If the URL is malformatted (missing a '/' after hostname before path) we
3840 * insert a slash here. The only letter except '/' we accept to start a path
3843 if(path[0] == '?') {
3844 /* We need this function to deal with overlapping memory areas. We know
3845 that the memory area 'path' points to is 'urllen' bytes big and that
3846 is bigger than the path. Use +1 to move the zero byte too. */
3847 memmove(&path[1], path, strlen(path)+1);
3852 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3853 char *newp = Curl_dedotdotify(path);
3855 if(strcmp(newp, path)) {
3857 free(data->state.pathbuffer);
3858 data->state.pathbuffer = newp;
3859 data->state.path = newp;
3867 * "rebuild_url" means that one or more URL components have been modified so
3868 * we need to generate an updated full version. We need the corrected URL
3869 * when communicating over HTTP proxy and we don't know at this point if
3870 * we're using a proxy or not.
3875 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3877 size_t urllen = strlen(data->change.url); /* original URL length */
3879 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3881 return CURLE_OUT_OF_MEMORY;
3883 /* copy the prefix */
3884 memcpy(reurl, data->change.url, urllen - (plen-1));
3886 /* append the trailing piece + zerobyte */
3887 memcpy(&reurl[urllen - (plen-1)], path, plen + 1);
3889 /* possible free the old one */
3890 if(data->change.url_alloc) {
3891 Curl_safefree(data->change.url);
3892 data->change.url_alloc = FALSE;
3895 infof(data, "Rebuilt URL to: %s\n", reurl);
3897 data->change.url = reurl;
3898 data->change.url_alloc = TRUE; /* free this later */
3902 * Parse the login details from the URL and strip them out of
3905 result = parse_url_login(data, conn, user, passwd, options);
3906 if(result != CURLE_OK)
3909 if(conn->host.name[0] == '[') {
3910 /* This looks like an IPv6 address literal. See if there is an address
3912 char *percent = strstr (conn->host.name, "%25");
3915 unsigned long scope = strtoul (percent + 3, &endp, 10);
3917 /* The address scope was well formed. Knock it out of the
3919 memmove(percent, endp, strlen(endp)+1);
3920 if(!data->state.this_is_a_follow)
3921 /* Don't honour a scope given in a Location: header */
3922 conn->scope = (unsigned int)scope;
3925 infof(data, "Invalid IPv6 address format\n");
3930 /* Override any scope that was set above. */
3931 conn->scope = data->set.scope;
3933 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3934 last part of the URI. We are looking for the first '#' so that we deal
3935 gracefully with non conformant URI such as http://example.com#foo#bar. */
3936 fragment = strchr(path, '#');
3940 /* we know the path part ended with a fragment, so we know the full URL
3941 string does too and we need to cut it off from there so it isn't used
3943 fragment = strchr(data->change.url, '#');
3949 * So if the URL was A://B/C#D,
3951 * conn->host.name is B
3952 * data->state.path is /C
3955 return findprotocol(data, conn, protop);
3959 * If we're doing a resumed transfer, we need to setup our stuff
3962 static CURLcode setup_range(struct SessionHandle *data)
3964 struct UrlState *s = &data->state;
3965 s->resume_from = data->set.set_resume_from;
3966 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3967 if(s->rangestringalloc)
3971 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
3973 s->range = strdup(data->set.str[STRING_SET_RANGE]);
3975 s->rangestringalloc = (s->range)?TRUE:FALSE;
3978 return CURLE_OUT_OF_MEMORY;
3980 /* tell ourselves to fetch this range */
3981 s->use_range = TRUE; /* enable range download */
3984 s->use_range = FALSE; /* disable range download */
3990 /***************************************************************
3991 * Setup connection internals specific to the requested protocol.
3992 * This MUST get called after proxy magic has been figured out.
3993 ***************************************************************/
3994 static CURLcode setup_connection_internals(struct connectdata *conn)
3996 const struct Curl_handler * p;
3999 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4001 /* Scan protocol handler table. */
4003 /* Perform setup complement if some. */
4006 if(p->setup_connection) {
4007 result = (*p->setup_connection)(conn);
4009 if(result != CURLE_OK)
4012 p = conn->handler; /* May have changed. */
4016 /* we check for -1 here since if proxy was detected already, this
4017 was very likely already set to the proxy port */
4018 conn->port = p->defport;
4019 conn->remote_port = (unsigned short)conn->given->defport;
4024 #ifndef CURL_DISABLE_PROXY
4025 /****************************************************************
4026 * Checks if the host is in the noproxy list. returns true if it matches
4027 * and therefore the proxy should NOT be used.
4028 ****************************************************************/
4029 static bool check_noproxy(const char* name, const char* no_proxy)
4031 /* no_proxy=domain1.dom,host.domain2.dom
4032 * (a comma-separated list of hosts which should
4033 * not be proxied, or an asterisk to override
4034 * all proxy variables)
4038 const char* separator = ", ";
4039 size_t no_proxy_len;
4043 if(no_proxy && no_proxy[0]) {
4044 if(Curl_raw_equal("*", no_proxy)) {
4048 /* NO_PROXY was specified and it wasn't just an asterisk */
4050 no_proxy_len = strlen(no_proxy);
4051 endptr = strchr(name, ':');
4053 namelen = endptr - name;
4055 namelen = strlen(name);
4057 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4058 while(tok_start < no_proxy_len &&
4059 strchr(separator, no_proxy[tok_start]) != NULL) {
4060 /* Look for the beginning of the token. */
4064 if(tok_start == no_proxy_len)
4065 break; /* It was all trailing separator chars, no more tokens. */
4067 for(tok_end = tok_start; tok_end < no_proxy_len &&
4068 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4069 /* Look for the end of the token. */
4072 /* To match previous behaviour, where it was necessary to specify
4073 * ".local.com" to prevent matching "notlocal.com", we will leave
4076 if(no_proxy[tok_start] == '.')
4079 if((tok_end - tok_start) <= namelen) {
4080 /* Match the last part of the name to the domain we are checking. */
4081 const char *checkn = name + namelen - (tok_end - tok_start);
4082 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4083 tok_end - tok_start)) {
4084 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4085 /* We either have an exact match, or the previous character is a .
4086 * so it is within the same domain, so no proxy for this host.
4091 } /* if((tok_end - tok_start) <= namelen) */
4092 } /* for(tok_start = 0; tok_start < no_proxy_len;
4093 tok_start = tok_end + 1) */
4094 } /* NO_PROXY was specified and it wasn't just an asterisk */
4099 /****************************************************************
4100 * Detect what (if any) proxy to use. Remember that this selects a host
4101 * name and is not limited to HTTP proxies only.
4102 * The returned pointer must be freed by the caller (unless NULL)
4103 ****************************************************************/
4104 static char *detect_proxy(struct connectdata *conn)
4108 #ifndef CURL_DISABLE_HTTP
4109 /* If proxy was not specified, we check for default proxy environment
4110 * variables, to enable i.e Lynx compliance:
4112 * http_proxy=http://some.server.dom:port/
4113 * https_proxy=http://some.server.dom:port/
4114 * ftp_proxy=http://some.server.dom:port/
4115 * no_proxy=domain1.dom,host.domain2.dom
4116 * (a comma-separated list of hosts which should
4117 * not be proxied, or an asterisk to override
4118 * all proxy variables)
4119 * all_proxy=http://some.server.dom:port/
4120 * (seems to exist for the CERN www lib. Probably
4121 * the first to check for.)
4123 * For compatibility, the all-uppercase versions of these variables are
4124 * checked if the lowercase versions don't exist.
4126 char *no_proxy=NULL;
4127 char proxy_env[128];
4129 no_proxy=curl_getenv("no_proxy");
4131 no_proxy=curl_getenv("NO_PROXY");
4133 if(!check_noproxy(conn->host.name, no_proxy)) {
4134 /* It was not listed as without proxy */
4135 const char *protop = conn->handler->scheme;
4136 char *envp = proxy_env;
4139 /* Now, build <protocol>_proxy and check for such a one to use */
4141 *envp++ = (char)tolower((int)*protop++);
4144 strcpy(envp, "_proxy");
4146 /* read the protocol proxy: */
4147 prox=curl_getenv(proxy_env);
4150 * We don't try the uppercase version of HTTP_PROXY because of
4153 * When curl is used in a webserver application
4154 * environment (cgi or php), this environment variable can
4155 * be controlled by the web server user by setting the
4156 * http header 'Proxy:' to some value.
4158 * This can cause 'internal' http/ftp requests to be
4159 * arbitrarily redirected by any external attacker.
4161 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4162 /* There was no lowercase variable, try the uppercase version: */
4163 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4164 prox=curl_getenv(proxy_env);
4167 if(prox && *prox) { /* don't count "" strings */
4168 proxy = prox; /* use this */
4171 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4173 proxy=curl_getenv("ALL_PROXY");
4175 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4180 #else /* !CURL_DISABLE_HTTP */
4183 #endif /* CURL_DISABLE_HTTP */
4189 * If this is supposed to use a proxy, we need to figure out the proxy
4190 * host name, so that we can re-use an existing connection
4191 * that may exist registered to the same proxy host.
4192 * proxy will be freed before this function returns.
4194 static CURLcode parse_proxy(struct SessionHandle *data,
4195 struct connectdata *conn, char *proxy)
4200 /* We use 'proxyptr' to point to the proxy name from now on... */
4205 /* We do the proxy host string parsing here. We want the host name and the
4206 * port name. Accept a protocol:// prefix
4209 /* Parse the protocol part if present */
4210 endofprot = strstr(proxy, "://");
4212 proxyptr = endofprot+3;
4213 if(checkprefix("socks5h", proxy))
4214 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4215 else if(checkprefix("socks5", proxy))
4216 conn->proxytype = CURLPROXY_SOCKS5;
4217 else if(checkprefix("socks4a", proxy))
4218 conn->proxytype = CURLPROXY_SOCKS4A;
4219 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4220 conn->proxytype = CURLPROXY_SOCKS4;
4221 /* Any other xxx:// : change to http proxy */
4224 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4226 /* Is there a username and password given in this proxy url? */
4227 atsign = strchr(proxyptr, '@');
4229 CURLcode res = CURLE_OK;
4230 char *proxyuser = NULL;
4231 char *proxypasswd = NULL;
4233 res = parse_login_details(proxyptr, atsign - proxyptr,
4234 &proxyuser, &proxypasswd, NULL);
4236 /* found user and password, rip them out. note that we are
4237 unescaping them, as there is otherwise no way to have a
4238 username or password with reserved characters like ':' in
4240 Curl_safefree(conn->proxyuser);
4241 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4242 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4244 conn->proxyuser = strdup("");
4246 if(!conn->proxyuser)
4247 res = CURLE_OUT_OF_MEMORY;
4249 Curl_safefree(conn->proxypasswd);
4250 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4251 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4253 conn->proxypasswd = strdup("");
4255 if(!conn->proxypasswd)
4256 res = CURLE_OUT_OF_MEMORY;
4260 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4261 atsign++; /* the right side of the @-letter */
4264 proxyptr = atsign; /* now use this instead */
4266 res = CURLE_OUT_OF_MEMORY;
4270 Curl_safefree(proxyuser);
4271 Curl_safefree(proxypasswd);
4277 /* start scanning for port number at this point */
4280 /* detect and extract RFC2732-style IPv6-addresses */
4281 if(*proxyptr == '[') {
4282 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4283 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4287 /* yeps, it ended nicely with a bracket as well */
4290 infof(data, "Invalid IPv6 address format\n");
4292 /* Note that if this didn't end with a bracket, we still advanced the
4293 * proxyptr first, but I can't see anything wrong with that as no host
4294 * name nor a numeric can legally start with a bracket.
4298 /* Get port number off proxy.server.com:1080 */
4299 prox_portno = strchr(portptr, ':');
4301 *prox_portno = 0x0; /* cut off number from host name */
4303 /* now set the local port number */
4304 conn->port = strtol(prox_portno, NULL, 10);
4307 if(proxyptr[0]=='/')
4308 /* If the first character in the proxy string is a slash, fail
4309 immediately. The following code will otherwise clear the string which
4310 will lead to code running as if no proxy was set! */
4311 return CURLE_COULDNT_RESOLVE_PROXY;
4313 /* without a port number after the host name, some people seem to use
4314 a slash so we strip everything from the first slash */
4315 atsign = strchr(proxyptr, '/');
4317 *atsign = 0x0; /* cut off path part from host name */
4319 if(data->set.proxyport)
4320 /* None given in the proxy string, then get the default one if it is
4322 conn->port = data->set.proxyport;
4325 /* now, clone the cleaned proxy host name */
4326 conn->proxy.rawalloc = strdup(proxyptr);
4327 conn->proxy.name = conn->proxy.rawalloc;
4329 if(!conn->proxy.rawalloc)
4330 return CURLE_OUT_OF_MEMORY;
4336 * Extract the user and password from the authentication string
4338 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4339 struct connectdata *conn)
4341 char proxyuser[MAX_CURL_USER_LENGTH]="";
4342 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4344 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4345 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4346 MAX_CURL_USER_LENGTH);
4347 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4349 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4350 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4351 MAX_CURL_PASSWORD_LENGTH);
4352 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4355 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4356 if(!conn->proxyuser)
4357 return CURLE_OUT_OF_MEMORY;
4359 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4360 if(!conn->proxypasswd)
4361 return CURLE_OUT_OF_MEMORY;
4365 #endif /* CURL_DISABLE_PROXY */
4370 * Parse the login details (user name, password and options) from the URL and
4371 * strip them out of the host name
4373 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4376 * Outputs: (almost :- all currently undefined)
4377 * conn->bits.user_passwd - non-zero if non-default passwords exist
4378 * user - non-zero length if defined
4379 * passwd - non-zero length if defined
4380 * options - non-zero length if defined
4381 * conn->host.name - remove user name and password
4383 static CURLcode parse_url_login(struct SessionHandle *data,
4384 struct connectdata *conn,
4385 char *user, char *passwd, char *options)
4387 CURLcode result = CURLE_OK;
4389 char *passwdp = NULL;
4390 char *optionsp = NULL;
4392 /* At this point, we're hoping all the other special cases have
4393 * been taken care of, so conn->host.name is at most
4394 * [user[:password][;options]]@]hostname
4396 * We need somewhere to put the embedded details, so do that first.
4399 char *ptr = strchr(conn->host.name, '@');
4400 char *login = conn->host.name;
4402 user[0] = 0; /* to make everything well-defined */
4406 /* We will now try to extract the
4407 * possible login information in a string like:
4408 * ftp://user:password@ftp.my.site:8021/README */
4410 /* There's login information to the left of the @ */
4412 conn->host.name = ++ptr;
4414 /* So the hostname is sane. Only bother interpreting the
4415 * results if we could care. It could still be wasted
4416 * work because it might be overtaken by the programmatically
4417 * set user/passwd, but doing that first adds more cases here :-(
4420 if(data->set.use_netrc != CURL_NETRC_REQUIRED) {
4421 /* We could use the login information in the URL so extract it */
4422 result = parse_login_details(login, ptr - login - 1,
4423 &userp, &passwdp, &optionsp);
4428 /* We have a user in the URL */
4429 conn->bits.userpwd_in_url = TRUE;
4430 conn->bits.user_passwd = TRUE; /* enable user+password */
4432 /* Decode the user */
4433 newname = curl_easy_unescape(data, userp, 0, NULL);
4435 return CURLE_OUT_OF_MEMORY;
4437 if(strlen(newname) < MAX_CURL_USER_LENGTH)
4438 strcpy(user, newname);
4444 /* We have a password in the URL so decode it */
4445 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4447 return CURLE_OUT_OF_MEMORY;
4449 if(strlen(newpasswd) < MAX_CURL_PASSWORD_LENGTH)
4450 strcpy(passwd, newpasswd);
4456 /* We have an options list in the URL so decode it */
4457 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4459 return CURLE_OUT_OF_MEMORY;
4461 if(strlen(newoptions) < MAX_CURL_OPTIONS_LENGTH)
4462 strcpy(options, newoptions);
4468 Curl_safefree(userp);
4469 Curl_safefree(passwdp);
4470 Curl_safefree(optionsp);
4478 * parse_login_details()
4480 * This is used to parse a login string for user name, password and options in
4481 * the following formats:
4485 * user:password;options
4487 * user;options:password
4495 * login [in] - The login string.
4496 * len [in] - The length of the login string.
4497 * userp [in/out] - The address where a pointer to newly allocated memory
4498 * holding the user will be stored upon completion.
4499 * passdwp [in/out] - The address where a pointer to newly allocated memory
4500 * holding the password will be stored upon completion.
4501 * optionsp [in/out] - The address where a pointer to newly allocated memory
4502 * holding the options will be stored upon completion.
4504 * Returns CURLE_OK on success.
4506 static CURLcode parse_login_details(const char *login, const size_t len,
4507 char **userp, char **passwdp,
4510 CURLcode result = CURLE_OK;
4514 const char *psep = NULL;
4515 const char *osep = NULL;
4520 /* Attempt to find the password separator */
4522 psep = strchr(login, ':');
4524 /* Within the constraint of the login string */
4525 if(psep >= login + len)
4529 /* Attempt to find the options separator */
4531 osep = strchr(login, ';');
4533 /* Within the constraint of the login string */
4534 if(osep >= login + len)
4538 /* Calculate the portion lengths */
4540 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4541 (osep ? (size_t)(osep - login) : len));
4543 (osep && osep > psep ? (size_t)(osep - psep) :
4544 (size_t)(login + len - psep)) - 1 : 0);
4546 (psep && psep > osep ? (size_t)(psep - osep) :
4547 (size_t)(login + len - osep)) - 1 : 0);
4549 /* Allocate the user portion buffer */
4551 ubuf = malloc(ulen + 1);
4553 result = CURLE_OUT_OF_MEMORY;
4556 /* Allocate the password portion buffer */
4557 if(!result && passwdp && plen) {
4558 pbuf = malloc(plen + 1);
4560 result = CURLE_OUT_OF_MEMORY;
4563 /* Allocate the options portion buffer */
4564 if(!result && optionsp && olen) {
4565 obuf = malloc(olen + 1);
4567 result = CURLE_OUT_OF_MEMORY;
4571 /* Store the user portion if necessary */
4573 memcpy(ubuf, login, ulen);
4575 Curl_safefree(*userp);
4579 /* Store the password portion if necessary */
4581 memcpy(pbuf, psep + 1, plen);
4583 Curl_safefree(*passwdp);
4587 /* Store the options portion if necessary */
4589 memcpy(obuf, osep + 1, olen);
4591 Curl_safefree(*optionsp);
4599 /*************************************************************
4600 * Figure out the remote port number and fix it in the URL
4602 * No matter if we use a proxy or not, we have to figure out the remote
4603 * port number of various reasons.
4605 * To be able to detect port number flawlessly, we must not confuse them
4606 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4608 * The conn->host.name is currently [user:passwd@]host[:port] where host
4609 * could be a hostname, IPv4 address or IPv6 address.
4611 * The port number embedded in the URL is replaced, if necessary.
4612 *************************************************************/
4613 static CURLcode parse_remote_port(struct SessionHandle *data,
4614 struct connectdata *conn)
4619 /* Note that at this point, the IPv6 address cannot contain any scope
4620 suffix as that has already been removed in the parseurlandfillconn()
4622 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4624 (']' == endbracket)) {
4625 /* this is a RFC2732-style specified IP-address */
4626 conn->bits.ipv6_ip = TRUE;
4628 conn->host.name++; /* skip over the starting bracket */
4629 portptr = strchr(conn->host.name, ']');
4631 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4633 portptr = NULL; /* no port number available */
4638 struct in6_addr in6;
4639 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4640 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4642 failf(data, "IPv6 numerical address used in URL without brackets");
4643 return CURLE_URL_MALFORMAT;
4647 portptr = strrchr(conn->host.name, ':');
4650 if(data->set.use_port && data->state.allow_port) {
4651 /* if set, we use this and ignore the port possibly given in the URL */
4652 conn->remote_port = (unsigned short)data->set.use_port;
4654 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4655 number - since the port number is to be ignored! */
4656 if(conn->bits.httpproxy) {
4657 /* we need to create new URL with the new port number */
4661 if(conn->bits.type_set)
4662 snprintf(type, sizeof(type), ";type=%c",
4663 data->set.prefer_ascii?'A':
4664 (data->set.ftp_list_only?'D':'I'));
4667 * This synthesized URL isn't always right--suffixes like ;type=A are
4668 * stripped off. It would be better to work directly from the original
4669 * URL and simply replace the port part of it.
4671 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4672 conn->bits.ipv6_ip?"[":"", conn->host.name,
4673 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4674 data->state.slash_removed?"/":"", data->state.path,
4677 return CURLE_OUT_OF_MEMORY;
4679 if(data->change.url_alloc) {
4680 Curl_safefree(data->change.url);
4681 data->change.url_alloc = FALSE;
4684 data->change.url = url;
4685 data->change.url_alloc = TRUE;
4689 /* no CURLOPT_PORT given, extract the one from the URL */
4694 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4696 if(rest != (portptr+1) && *rest == '\0') {
4697 /* The colon really did have only digits after it,
4698 * so it is either a port number or a mistake */
4700 if(port > 0xffff) { /* Single unix standard says port numbers are
4702 failf(data, "Port number too large: %lu", port);
4703 return CURLE_URL_MALFORMAT;
4706 *portptr = '\0'; /* cut off the name there */
4707 conn->remote_port = curlx_ultous(port);
4710 /* Browser behavior adaptation. If there's a colon with no digits after,
4711 just cut off the name there which makes us ignore the colon and just
4712 use the default port. Firefox and Chrome both do that. */
4719 * Override the login details from the URL with that in the CURLOPT_USERPWD
4720 * option or a .netrc file, if applicable.
4722 static void override_login(struct SessionHandle *data,
4723 struct connectdata *conn,
4724 char *user, char *passwd, char *options)
4726 if(data->set.str[STRING_USERNAME]) {
4727 strncpy(user, data->set.str[STRING_USERNAME], MAX_CURL_USER_LENGTH);
4728 user[MAX_CURL_USER_LENGTH - 1] = '\0'; /* To be on safe side */
4731 if(data->set.str[STRING_PASSWORD]) {
4732 strncpy(passwd, data->set.str[STRING_PASSWORD], MAX_CURL_PASSWORD_LENGTH);
4733 passwd[MAX_CURL_PASSWORD_LENGTH - 1] = '\0'; /* To be on safe side */
4736 if(data->set.str[STRING_OPTIONS]) {
4737 strncpy(options, data->set.str[STRING_OPTIONS], MAX_CURL_OPTIONS_LENGTH);
4738 options[MAX_CURL_OPTIONS_LENGTH - 1] = '\0'; /* To be on safe side */
4741 conn->bits.netrc = FALSE;
4742 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4743 if(Curl_parsenetrc(conn->host.name,
4745 data->set.str[STRING_NETRC_FILE])) {
4746 infof(data, "Couldn't find host %s in the "
4747 DOT_CHAR "netrc file; using defaults\n",
4751 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4752 file, so that it is safe to use even if we followed a Location: to a
4753 different host or similar. */
4754 conn->bits.netrc = TRUE;
4756 conn->bits.user_passwd = TRUE; /* enable user+password */
4762 * Set password so it's available in the connection.
4764 static CURLcode set_login(struct connectdata *conn,
4765 const char *user, const char *passwd,
4766 const char *options)
4768 CURLcode result = CURLE_OK;
4770 /* If our protocol needs a password and we have none, use the defaults */
4771 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4772 /* Store the default user */
4773 conn->user = strdup(CURL_DEFAULT_USER);
4775 /* Store the default password */
4777 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4779 conn->passwd = NULL;
4781 /* This is the default password, so DON'T set conn->bits.user_passwd */
4784 /* Store the user, zero-length if not set */
4785 conn->user = strdup(user);
4787 /* Store the password (only if user is present), zero-length if not set */
4789 conn->passwd = strdup(passwd);
4791 conn->passwd = NULL;
4794 if(!conn->user || !conn->passwd)
4795 result = CURLE_OUT_OF_MEMORY;
4797 /* Store the options, null if not set */
4798 if(!result && options[0]) {
4799 conn->options = strdup(options);
4802 result = CURLE_OUT_OF_MEMORY;
4808 /*************************************************************
4809 * Resolve the address of the server or proxy
4810 *************************************************************/
4811 static CURLcode resolve_server(struct SessionHandle *data,
4812 struct connectdata *conn,
4815 CURLcode result=CURLE_OK;
4816 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4818 /*************************************************************
4819 * Resolve the name of the server or proxy
4820 *************************************************************/
4821 if(conn->bits.reuse)
4822 /* We're reusing the connection - no need to resolve anything, and
4823 fix_hostname() was called already in create_conn() for the re-use
4828 /* this is a fresh connect */
4830 struct Curl_dns_entry *hostaddr;
4832 /* set a pointer to the hostname we display */
4833 fix_hostname(data, conn, &conn->host);
4835 if(!conn->proxy.name || !*conn->proxy.name) {
4836 /* If not connecting via a proxy, extract the port from the URL, if it is
4837 * there, thus overriding any defaults that might have been set above. */
4838 conn->port = conn->remote_port; /* it is the same port */
4840 /* Resolve target host right on */
4841 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4842 &hostaddr, timeout_ms);
4843 if(rc == CURLRESOLV_PENDING)
4846 else if(rc == CURLRESOLV_TIMEDOUT)
4847 result = CURLE_OPERATION_TIMEDOUT;
4849 else if(!hostaddr) {
4850 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4851 result = CURLE_COULDNT_RESOLVE_HOST;
4852 /* don't return yet, we need to clean up the timeout first */
4856 /* This is a proxy that hasn't been resolved yet. */
4858 /* IDN-fix the proxy name */
4859 fix_hostname(data, conn, &conn->proxy);
4862 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4863 &hostaddr, timeout_ms);
4865 if(rc == CURLRESOLV_PENDING)
4868 else if(rc == CURLRESOLV_TIMEDOUT)
4869 result = CURLE_OPERATION_TIMEDOUT;
4871 else if(!hostaddr) {
4872 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4873 result = CURLE_COULDNT_RESOLVE_PROXY;
4874 /* don't return yet, we need to clean up the timeout first */
4877 DEBUGASSERT(conn->dns_entry == NULL);
4878 conn->dns_entry = hostaddr;
4885 * Cleanup the connection just allocated before we can move along and use the
4886 * previously existing one. All relevant data is copied over and old_conn is
4887 * ready for freeing once this function returns.
4889 static void reuse_conn(struct connectdata *old_conn,
4890 struct connectdata *conn)
4892 if(old_conn->proxy.rawalloc)
4893 free(old_conn->proxy.rawalloc);
4895 /* free the SSL config struct from this connection struct as this was
4896 allocated in vain and is targeted for destruction */
4897 Curl_free_ssl_config(&old_conn->ssl_config);
4899 conn->data = old_conn->data;
4901 /* get the user+password information from the old_conn struct since it may
4902 * be new for this request even when we re-use an existing connection */
4903 conn->bits.user_passwd = old_conn->bits.user_passwd;
4904 if(conn->bits.user_passwd) {
4905 /* use the new user name and password though */
4906 Curl_safefree(conn->user);
4907 Curl_safefree(conn->passwd);
4908 conn->user = old_conn->user;
4909 conn->passwd = old_conn->passwd;
4910 old_conn->user = NULL;
4911 old_conn->passwd = NULL;
4914 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4915 if(conn->bits.proxy_user_passwd) {
4916 /* use the new proxy user name and proxy password though */
4917 Curl_safefree(conn->proxyuser);
4918 Curl_safefree(conn->proxypasswd);
4919 conn->proxyuser = old_conn->proxyuser;
4920 conn->proxypasswd = old_conn->proxypasswd;
4921 old_conn->proxyuser = NULL;
4922 old_conn->proxypasswd = NULL;
4925 /* host can change, when doing keepalive with a proxy or if the case is
4926 different this time etc */
4927 Curl_safefree(conn->host.rawalloc);
4928 conn->host=old_conn->host;
4930 /* persist connection info in session handle */
4931 Curl_persistconninfo(conn);
4934 conn->bits.reuse = TRUE; /* yes, we're re-using here */
4936 Curl_safefree(old_conn->user);
4937 Curl_safefree(old_conn->passwd);
4938 Curl_safefree(old_conn->proxyuser);
4939 Curl_safefree(old_conn->proxypasswd);
4940 Curl_safefree(old_conn->localdev);
4942 Curl_llist_destroy(old_conn->send_pipe, NULL);
4943 Curl_llist_destroy(old_conn->recv_pipe, NULL);
4945 old_conn->send_pipe = NULL;
4946 old_conn->recv_pipe = NULL;
4948 Curl_safefree(old_conn->master_buffer);
4952 * create_conn() sets up a new connectdata struct, or re-uses an already
4953 * existing one, and resolves host name.
4955 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
4956 * response will be coming asynchronously. If *async is FALSE, the name is
4959 * @param data The sessionhandle pointer
4960 * @param in_connect is set to the next connection data pointer
4961 * @param async is set TRUE when an async DNS resolution is pending
4962 * @see Curl_setup_conn()
4964 * *NOTE* this function assigns the conn->data pointer!
4967 static CURLcode create_conn(struct SessionHandle *data,
4968 struct connectdata **in_connect,
4971 CURLcode result = CURLE_OK;
4972 struct connectdata *conn;
4973 struct connectdata *conn_temp = NULL;
4975 char user[MAX_CURL_USER_LENGTH];
4976 char passwd[MAX_CURL_PASSWORD_LENGTH];
4977 char options[MAX_CURL_OPTIONS_LENGTH];
4980 bool prot_missing = FALSE;
4981 bool no_connections_available = FALSE;
4983 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
4984 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
4988 /*************************************************************
4990 *************************************************************/
4992 if(!data->change.url)
4993 return CURLE_URL_MALFORMAT;
4995 /* First, split up the current URL in parts so that we can use the
4996 parts for checking against the already present connections. In order
4997 to not have to modify everything at once, we allocate a temporary
4998 connection data struct and fill in for comparison purposes. */
4999 conn = allocate_conn(data);
5002 return CURLE_OUT_OF_MEMORY;
5004 /* We must set the return variable as soon as possible, so that our
5005 parent can cleanup any possible allocs we may have done before
5009 /* This initing continues below, see the comment "Continue connectdata
5010 * initialization here" */
5012 /***********************************************************
5013 * We need to allocate memory to store the path in. We get the size of the
5014 * full URL to be sure, and we need to make it at least 256 bytes since
5015 * other parts of the code will rely on this fact
5016 ***********************************************************/
5017 #define LEAST_PATH_ALLOC 256
5018 urllen=strlen(data->change.url);
5019 if(urllen < LEAST_PATH_ALLOC)
5020 urllen=LEAST_PATH_ALLOC;
5023 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5024 * 1 - an extra terminating zero
5025 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5028 Curl_safefree(data->state.pathbuffer);
5029 data->state.path = NULL;
5031 data->state.pathbuffer = malloc(urllen+2);
5032 if(NULL == data->state.pathbuffer)
5033 return CURLE_OUT_OF_MEMORY; /* really bad error */
5034 data->state.path = data->state.pathbuffer;
5036 conn->host.rawalloc = malloc(urllen+2);
5037 if(NULL == conn->host.rawalloc) {
5038 Curl_safefree(data->state.pathbuffer);
5039 data->state.path = NULL;
5040 return CURLE_OUT_OF_MEMORY;
5043 conn->host.name = conn->host.rawalloc;
5044 conn->host.name[0] = 0;
5046 result = parseurlandfillconn(data, conn, &prot_missing, user, passwd,
5048 if(result != CURLE_OK)
5051 /*************************************************************
5052 * No protocol part in URL was used, add it!
5053 *************************************************************/
5055 /* We're guessing prefixes here and if we're told to use a proxy or if
5056 we're gonna follow a Location: later or... then we need the protocol
5057 part added so that we have a valid URL. */
5060 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5063 Curl_safefree(proxy);
5064 return CURLE_OUT_OF_MEMORY;
5067 if(data->change.url_alloc) {
5068 Curl_safefree(data->change.url);
5069 data->change.url_alloc = FALSE;
5072 data->change.url = reurl;
5073 data->change.url_alloc = TRUE; /* free this later */
5076 /*************************************************************
5077 * If the protocol can't handle url query strings, then cut
5078 * of the unhandable part
5079 *************************************************************/
5080 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5081 char *path_q_sep = strchr(conn->data->state.path, '?');
5083 /* according to rfc3986, allow the query (?foo=bar)
5084 also on protocols that can't handle it.
5086 cut the string-part after '?'
5089 /* terminate the string */
5094 #ifndef CURL_DISABLE_PROXY
5095 /*************************************************************
5096 * Extract the user and password from the authentication string
5097 *************************************************************/
5098 if(conn->bits.proxy_user_passwd) {
5099 result = parse_proxy_auth(data, conn);
5100 if(result != CURLE_OK)
5104 /*************************************************************
5105 * Detect what (if any) proxy to use
5106 *************************************************************/
5107 if(data->set.str[STRING_PROXY]) {
5108 proxy = strdup(data->set.str[STRING_PROXY]);
5109 /* if global proxy is set, this is it */
5111 failf(data, "memory shortage");
5112 return CURLE_OUT_OF_MEMORY;
5116 if(data->set.str[STRING_NOPROXY] &&
5117 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5119 free(proxy); /* proxy is in exception list */
5124 proxy = detect_proxy(conn);
5126 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5127 free(proxy); /* Don't bother with an empty proxy string or if the
5128 protocol doesn't work with network */
5132 /***********************************************************************
5133 * If this is supposed to use a proxy, we need to figure out the proxy host
5134 * name, proxy type and port number, so that we can re-use an existing
5135 * connection that may exist registered to the same proxy host.
5136 ***********************************************************************/
5138 result = parse_proxy(data, conn, proxy);
5140 free(proxy); /* parse_proxy copies the proxy string */
5145 if((conn->proxytype == CURLPROXY_HTTP) ||
5146 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5147 #ifdef CURL_DISABLE_HTTP
5148 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5149 return CURLE_UNSUPPORTED_PROTOCOL;
5151 /* force this connection's protocol to become HTTP if not already
5152 compatible - if it isn't tunneling through */
5153 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5154 !conn->bits.tunnel_proxy)
5155 conn->handler = &Curl_handler_http;
5157 conn->bits.httpproxy = TRUE;
5161 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5162 conn->bits.proxy = TRUE;
5165 /* we aren't using the proxy after all... */
5166 conn->bits.proxy = FALSE;
5167 conn->bits.httpproxy = FALSE;
5168 conn->bits.proxy_user_passwd = FALSE;
5169 conn->bits.tunnel_proxy = FALSE;
5172 #endif /* CURL_DISABLE_PROXY */
5174 /*************************************************************
5175 * Setup internals depending on protocol. Needs to be done after
5176 * we figured out what/if proxy to use.
5177 *************************************************************/
5178 result = setup_connection_internals(conn);
5179 if(result != CURLE_OK) {
5180 Curl_safefree(proxy);
5184 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5185 conn->send[FIRSTSOCKET] = Curl_send_plain;
5186 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5187 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5189 /***********************************************************************
5190 * file: is a special case in that it doesn't need a network connection
5191 ***********************************************************************/
5192 #ifndef CURL_DISABLE_FILE
5193 if(conn->handler->flags & PROTOPT_NONETWORK) {
5195 /* this is supposed to be the connect function so we better at least check
5196 that the file is present here! */
5197 DEBUGASSERT(conn->handler->connect_it);
5198 result = conn->handler->connect_it(conn, &done);
5200 /* Setup a "faked" transfer that'll do nothing */
5201 if(CURLE_OK == result) {
5203 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5205 ConnectionStore(data, conn);
5208 * Setup whatever necessary for a resumed transfer
5210 result = setup_range(data);
5212 DEBUGASSERT(conn->handler->done);
5213 /* we ignore the return code for the protocol-specific DONE */
5214 (void)conn->handler->done(conn, result, FALSE);
5218 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5219 -1, NULL); /* no upload */
5222 /* since we skip do_init() */
5223 Curl_speedinit(data);
5229 /*************************************************************
5230 * If the protocol is using SSL and HTTP proxy is used, we set
5231 * the tunnel_proxy bit.
5232 *************************************************************/
5233 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5234 conn->bits.tunnel_proxy = TRUE;
5236 /*************************************************************
5237 * Figure out the remote port number and fix it in the URL
5238 *************************************************************/
5239 result = parse_remote_port(data, conn);
5240 if(result != CURLE_OK)
5243 /* Check for overridden login details and set them accordingly */
5244 override_login(data, conn, user, passwd, options);
5245 result = set_login(conn, user, passwd, options);
5246 if(result != CURLE_OK)
5249 /* Get a cloned copy of the SSL config situation stored in the
5250 connection struct. But to get this going nicely, we must first make
5251 sure that the strings in the master copy are pointing to the correct
5252 strings in the session handle strings array!
5254 Keep in mind that the pointers in the master copy are pointing to strings
5255 that will be freed as part of the SessionHandle struct, but all cloned
5256 copies will be separately allocated.
5258 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5259 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5260 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5261 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5262 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5263 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5264 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5266 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5267 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5270 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config))
5271 return CURLE_OUT_OF_MEMORY;
5273 /*************************************************************
5274 * Check the current list of connections to see if we can
5275 * re-use an already existing one or if we have to create a
5277 *************************************************************/
5279 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5280 we only acknowledge this option if this is not a re-used connection
5281 already (which happens due to follow-location or during a HTTP
5282 authentication phase). */
5283 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5286 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5288 /* If we found a reusable connection, we may still want to
5289 open a new connection if we are pipelining. */
5290 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5291 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5293 infof(data, "Found connection %d, with requests in the pipe (%d)\n",
5294 conn_temp->connection_id, pipelen);
5296 if(conn_temp->bundle->num_connections < max_host_connections &&
5297 data->state.conn_cache->num_connections < max_total_connections) {
5298 /* We want a new connection anyway */
5301 infof(data, "We can reuse, but we want a new connection anyway\n");
5308 * We already have a connection for this, we got the former connection
5309 * in the conn_temp variable and thus we need to cleanup the one we
5310 * just allocated before we can move along and use the previously
5313 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5314 handle in a multi stack may nick it */
5315 reuse_conn(conn, conn_temp);
5316 free(conn); /* we don't need this anymore */
5320 /* set a pointer to the hostname we display */
5321 fix_hostname(data, conn, &conn->host);
5323 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5324 conn->connection_id,
5325 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5328 /* We have decided that we want a new connection. However, we may not
5329 be able to do that if we have reached the limit of how many
5330 connections we are allowed to open. */
5331 struct connectbundle *bundle;
5333 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5335 if(max_host_connections > 0 && bundle &&
5336 (bundle->num_connections >= max_host_connections)) {
5337 struct connectdata *conn_candidate;
5339 /* The bundle is full. Let's see if we can kill a connection. */
5340 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5342 if(conn_candidate) {
5343 /* Set the connection's owner correctly, then kill it */
5344 conn_candidate->data = data;
5345 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5348 no_connections_available = TRUE;
5351 if(max_total_connections > 0 &&
5352 (data->state.conn_cache->num_connections >= max_total_connections)) {
5353 struct connectdata *conn_candidate;
5355 /* The cache is full. Let's see if we can kill a connection. */
5356 conn_candidate = find_oldest_idle_connection(data);
5358 if(conn_candidate) {
5359 /* Set the connection's owner correctly, then kill it */
5360 conn_candidate->data = data;
5361 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5364 no_connections_available = TRUE;
5368 if(no_connections_available) {
5369 infof(data, "No connections available.\n");
5374 return CURLE_NO_CONNECTION_AVAILABLE;
5378 * This is a brand new connection, so let's store it in the connection
5381 ConnectionStore(data, conn);
5385 /* Mark the connection as used */
5388 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5392 * Setup whatever necessary for a resumed transfer
5394 result = setup_range(data);
5398 /* Continue connectdata initialization here. */
5401 * Inherit the proper values from the urldata struct AFTER we have arranged
5402 * the persistent connection stuff
5404 conn->fread_func = data->set.fread_func;
5405 conn->fread_in = data->set.in;
5406 conn->seek_func = data->set.seek_func;
5407 conn->seek_client = data->set.seek_client;
5409 /*************************************************************
5410 * Resolve the address of the server or proxy
5411 *************************************************************/
5412 result = resolve_server(data, conn, async);
5417 /* Curl_setup_conn() is called after the name resolve initiated in
5418 * create_conn() is all done.
5420 * Curl_setup_conn() also handles reused connections
5422 * conn->data MUST already have been setup fine (in create_conn)
5425 CURLcode Curl_setup_conn(struct connectdata *conn,
5426 bool *protocol_done)
5428 CURLcode result = CURLE_OK;
5429 struct SessionHandle *data = conn->data;
5431 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5433 if(conn->handler->flags & PROTOPT_NONETWORK) {
5434 /* nothing to setup when not using a network */
5435 *protocol_done = TRUE;
5438 *protocol_done = FALSE; /* default to not done */
5440 /* set proxy_connect_closed to false unconditionally already here since it
5441 is used strictly to provide extra information to a parent function in the
5442 case of proxy CONNECT failures and we must make sure we don't have it
5443 lingering set from a previous invoke */
5444 conn->bits.proxy_connect_closed = FALSE;
5447 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5448 * basically anything through a http proxy we can't limit this based on
5451 if(data->set.str[STRING_USERAGENT]) {
5452 Curl_safefree(conn->allocptr.uagent);
5453 conn->allocptr.uagent =
5454 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5455 if(!conn->allocptr.uagent)
5456 return CURLE_OUT_OF_MEMORY;
5459 data->req.headerbytecount = 0;
5461 #ifdef CURL_DO_LINEEND_CONV
5462 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5463 #endif /* CURL_DO_LINEEND_CONV */
5465 /* set start time here for timeout purposes in the connect procedure, it
5466 is later set again for the progress meter purpose */
5467 conn->now = Curl_tvnow();
5470 /* loop for CURL_SERVER_CLOSED_CONNECTION */
5472 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5473 /* Try to connect only if not already connected */
5474 bool connected = FALSE;
5476 result = ConnectPlease(data, conn, &connected);
5478 if(result && !conn->ip_addr) {
5479 /* transport connection failure not related with authentication */
5480 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5485 result = Curl_protocol_connect(conn, protocol_done);
5486 if(CURLE_OK == result)
5487 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5490 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5492 /* if the connection was closed by the server while exchanging
5493 authentication informations, retry with the new set
5494 authentication information */
5495 if(conn->bits.proxy_connect_closed) {
5496 /* reset the error buffer */
5497 if(data->set.errorbuffer)
5498 data->set.errorbuffer[0] = '\0';
5499 data->state.errorbuf = FALSE;
5503 if(CURLE_OK != result)
5507 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5508 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5509 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5510 *protocol_done = TRUE;
5511 Curl_verboseconnect(conn);
5512 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5514 /* Stop the loop now */
5518 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5519 set this here perhaps a second time */
5523 * This check is quite a hack. We're calling _fsetmode to fix the problem
5524 * with fwrite converting newline characters (you get mangled text files,
5525 * and corrupted binary files when you download to stdout and redirect it to
5529 if((data->set.out)->_handle == NULL) {
5530 _fsetmode(stdout, "b");
5537 CURLcode Curl_connect(struct SessionHandle *data,
5538 struct connectdata **in_connect,
5540 bool *protocol_done)
5544 *asyncp = FALSE; /* assume synchronous resolves by default */
5546 /* call the stuff that needs to be called */
5547 code = create_conn(data, in_connect, asyncp);
5549 if(CURLE_OK == code) {
5551 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5553 *protocol_done = TRUE;
5555 /* DNS resolution is done: that's either because this is a reused
5556 connection, in which case DNS was unnecessary, or because DNS
5557 really did finish already (synch resolver/fast async resolve) */
5558 code = Curl_setup_conn(*in_connect, protocol_done);
5562 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5567 if(code && *in_connect) {
5568 /* We're not allowed to return failure with memory left allocated
5569 in the connectdata struct, free those here */
5570 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5571 *in_connect = NULL; /* return a NULL */
5577 CURLcode Curl_done(struct connectdata **connp,
5578 CURLcode status, /* an error if this is called after an
5579 error was detected */
5583 struct connectdata *conn;
5584 struct SessionHandle *data;
5586 DEBUGASSERT(*connp);
5592 /* Stop if Curl_done() has already been called */
5595 Curl_getoff_all_pipelines(data, conn);
5597 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5598 !data->set.reuse_forbid &&
5600 /* Stop if pipeline is not empty and we do not have to close
5604 conn->bits.done = TRUE; /* called just now! */
5606 /* Cleanup possible redirect junk */
5607 if(data->req.newurl) {
5608 free(data->req.newurl);
5609 data->req.newurl = NULL;
5611 if(data->req.location) {
5612 free(data->req.location);
5613 data->req.location = NULL;
5616 Curl_resolver_cancel(conn);
5618 if(conn->dns_entry) {
5619 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5620 conn->dns_entry = NULL;
5623 if(status == CURLE_ABORTED_BY_CALLBACK)
5624 /* When we're aborted due to a callback return code it basically have to
5625 be counted as premature as there is trouble ahead if we don't. We have
5626 many callbacks and protocols work differently, we could potentially do
5627 this more fine-grained in the future. */
5630 /* this calls the protocol-specific function pointer previously set */
5631 if(conn->handler->done)
5632 result = conn->handler->done(conn, status, premature);
5636 if(Curl_pgrsDone(conn) && !result)
5637 result = CURLE_ABORTED_BY_CALLBACK;
5639 /* if the transfer was completed in a paused state there can be buffered
5640 data left to write and then kill */
5641 if(data->state.tempwrite) {
5642 free(data->state.tempwrite);
5643 data->state.tempwrite = NULL;
5646 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5647 forced us to close this no matter what we think.
5649 if conn->bits.close is TRUE, it means that the connection should be
5650 closed in spite of all our efforts to be nice, due to protocol
5651 restrictions in our or the server's end
5653 if premature is TRUE, it means this connection was said to be DONE before
5654 the entire request operation is complete and thus we can't know in what
5655 state it is for re-using, so we're forced to close it. In a perfect world
5656 we can add code that keep track of if we really must close it here or not,
5657 but currently we have no such detail knowledge.
5659 if(data->set.reuse_forbid || conn->bits.close || premature) {
5660 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5662 /* If we had an error already, make sure we return that one. But
5663 if we got a new error, return that. */
5668 /* the connection is no longer in use */
5669 if(ConnectionDone(data, conn)) {
5670 /* remember the most recently used connection */
5671 data->state.lastconnect = conn;
5673 infof(data, "Connection #%ld to host %s left intact\n",
5674 conn->connection_id,
5675 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5678 data->state.lastconnect = NULL;
5681 *connp = NULL; /* to make the caller of this function better detect that
5682 this was either closed or handed over to the connection
5683 cache here, and therefore cannot be used from this point on
5690 * do_init() inits the readwrite session. This is inited each time (in the DO
5691 * function before the protocol-specific DO functions are invoked) for a
5692 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5693 * nothing in here depends on stuff that are setup dynamically for the
5697 static CURLcode do_init(struct connectdata *conn)
5699 struct SessionHandle *data = conn->data;
5700 struct SingleRequest *k = &data->req;
5702 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5703 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5704 data->state.expect100header = FALSE;
5706 if(data->set.opt_no_body)
5707 /* in HTTP lingo, no body means using the HEAD request... */
5708 data->set.httpreq = HTTPREQ_HEAD;
5709 else if(HTTPREQ_HEAD == data->set.httpreq)
5710 /* ... but if unset there really is no perfect method that is the
5711 "opposite" of HEAD but in reality most people probably think GET
5712 then. The important thing is that we can't let it remain HEAD if the
5713 opt_no_body is set FALSE since then we'll behave wrong when getting
5715 data->set.httpreq = HTTPREQ_GET;
5717 /* NB: the content encoding software depends on this initialization */
5718 Curl_easy_initHandleData(data);
5720 k->start = Curl_tvnow(); /* start time */
5721 k->now = k->start; /* current time is now */
5722 k->header = TRUE; /* assume header */
5726 k->buf = data->state.buffer;
5727 k->uploadbuf = data->state.uploadbuffer;
5728 k->hbufp = data->state.headerbuff;
5729 k->ignorebody=FALSE;
5731 Curl_speedinit(data);
5733 Curl_pgrsSetUploadCounter(data, 0);
5734 Curl_pgrsSetDownloadCounter(data, 0);
5740 * do_complete is called when the DO actions are complete.
5742 * We init chunking and trailer bits to their default values here immediately
5743 * before receiving any header data for the current request in the pipeline.
5745 static void do_complete(struct connectdata *conn)
5747 conn->data->req.chunk=FALSE;
5748 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5749 conn->sockfd:conn->writesockfd)+1;
5750 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5753 CURLcode Curl_do(struct connectdata **connp, bool *done)
5755 CURLcode result=CURLE_OK;
5756 struct connectdata *conn = *connp;
5757 struct SessionHandle *data = conn->data;
5759 if(conn->handler->do_it) {
5760 /* generic protocol-specific function pointer set in curl_connect() */
5761 result = conn->handler->do_it(conn, done);
5763 /* This was formerly done in transfer.c, but we better do it here */
5764 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5766 * If the connection is using an easy handle, call reconnect
5767 * to re-establish the connection. Otherwise, let the multi logic
5768 * figure out how to re-establish the connection.
5771 result = Curl_reconnect_request(connp);
5773 if(result == CURLE_OK) {
5774 /* ... finally back to actually retry the DO phase */
5775 conn = *connp; /* re-assign conn since Curl_reconnect_request
5776 creates a new connection */
5777 result = conn->handler->do_it(conn, done);
5784 if((result == CURLE_OK) && *done)
5785 /* do_complete must be called after the protocol-specific DO function */
5792 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5793 * second stage DO state which (wrongly) was introduced to support FTP's
5794 * second connection.
5796 * TODO: A future libcurl should be able to work away this state.
5800 CURLcode Curl_do_more(struct connectdata *conn, bool *completed)
5802 CURLcode result=CURLE_OK;
5806 if(conn->handler->do_more)
5807 result = conn->handler->do_more(conn, completed);
5809 if(!result && *completed)
5810 /* do_complete must be called after the protocol-specific DO function */
5816 /* Called on connect, and if there's already a protocol-specific struct
5817 allocated for a different connection, this frees it that it can be setup
5818 properly later on. */
5819 void Curl_reset_reqproto(struct connectdata *conn)
5821 struct SessionHandle *data = conn->data;
5822 if(data->state.proto.generic && data->state.current_conn != conn) {
5823 free(data->state.proto.generic);
5824 data->state.proto.generic = NULL;
5826 data->state.current_conn = conn;