1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
81 #include "vtls/vtls.h"
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **userptr, char **passwdptr,
149 static CURLcode parse_login_details(const char *login, const size_t len,
150 char **userptr, char **passwdptr,
156 static const struct Curl_handler * const protocols[] = {
158 #ifndef CURL_DISABLE_HTTP
162 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
166 #ifndef CURL_DISABLE_FTP
170 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
174 #ifndef CURL_DISABLE_TELNET
175 &Curl_handler_telnet,
178 #ifndef CURL_DISABLE_DICT
182 #ifndef CURL_DISABLE_LDAP
184 #if !defined(CURL_DISABLE_LDAPS) && \
185 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
186 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
191 #ifndef CURL_DISABLE_FILE
195 #ifndef CURL_DISABLE_TFTP
204 #ifndef CURL_DISABLE_IMAP
211 #ifndef CURL_DISABLE_POP3
218 #ifndef CURL_DISABLE_SMTP
225 #ifndef CURL_DISABLE_RTSP
229 #ifndef CURL_DISABLE_GOPHER
230 &Curl_handler_gopher,
237 &Curl_handler_rtmpte,
239 &Curl_handler_rtmpts,
242 (struct Curl_handler *) NULL
246 * Dummy handler for undefined protocol schemes.
249 static const struct Curl_handler Curl_handler_dummy = {
250 "<no protocol>", /* scheme */
251 ZERO_NULL, /* setup_connection */
252 ZERO_NULL, /* do_it */
253 ZERO_NULL, /* done */
254 ZERO_NULL, /* do_more */
255 ZERO_NULL, /* connect_it */
256 ZERO_NULL, /* connecting */
257 ZERO_NULL, /* doing */
258 ZERO_NULL, /* proto_getsock */
259 ZERO_NULL, /* doing_getsock */
260 ZERO_NULL, /* domore_getsock */
261 ZERO_NULL, /* perform_getsock */
262 ZERO_NULL, /* disconnect */
263 ZERO_NULL, /* readwrite */
266 PROTOPT_NONE /* flags */
269 void Curl_freeset(struct SessionHandle *data)
271 /* Free all dynamic strings stored in the data->set substructure. */
273 for(i=(enum dupstring)0; i < STRING_LAST; i++)
274 Curl_safefree(data->set.str[i]);
276 if(data->change.referer_alloc) {
277 Curl_safefree(data->change.referer);
278 data->change.referer_alloc = FALSE;
280 data->change.referer = NULL;
281 if(data->change.url_alloc) {
282 Curl_safefree(data->change.url);
283 data->change.url_alloc = FALSE;
285 data->change.url = NULL;
288 static CURLcode setstropt(char **charp, char *s)
290 /* Release the previous storage at `charp' and replace by a dynamic storage
291 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
293 Curl_safefree(*charp);
299 return CURLE_OUT_OF_MEMORY;
307 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
309 CURLcode result = CURLE_OK;
313 /* Parse the login details if specified. It not then we treat NULL as a hint
314 to clear the existing data */
316 result = parse_login_details(option, strlen(option),
317 (userp ? &user : NULL),
318 (passwdp ? &passwd : NULL),
323 /* Store the username part of option if required */
325 if(!user && option && option[0] == ':') {
326 /* Allocate an empty string instead of returning NULL as user name */
329 result = CURLE_OUT_OF_MEMORY;
332 Curl_safefree(*userp);
336 /* Store the password part of option if required */
338 Curl_safefree(*passwdp);
346 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
348 CURLcode r = CURLE_OK;
351 /* Copy src->set into dst->set first, then deal with the strings
355 /* clear all string pointers first */
356 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
358 /* duplicate all strings */
359 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
360 r = setstropt(&dst->set.str[i], src->set.str[i]);
365 /* If a failure occurred, freeing has to be performed externally. */
370 * This is the internal function curl_easy_cleanup() calls. This should
371 * cleanup and free all resources associated with this sessionhandle.
373 * NOTE: if we ever add something that attempts to write to a socket or
374 * similar here, we must ignore SIGPIPE first. It is currently only done
375 * when curl_easy_perform() is invoked.
378 CURLcode Curl_close(struct SessionHandle *data)
380 struct Curl_multi *m;
385 Curl_expire(data, 0); /* shut off timers */
390 /* This handle is still part of a multi handle, take care of this first
391 and detach this handle from there. */
392 curl_multi_remove_handle(data->multi, data);
395 /* when curl_easy_perform() is used, it creates its own multi handle to
396 use and this is the one */
397 curl_multi_cleanup(data->multi_easy);
399 /* Destroy the timeout list that is held in the easy handle. It is
400 /normally/ done by curl_multi_remove_handle() but this is "just in
402 if(data->state.timeoutlist) {
403 Curl_llist_destroy(data->state.timeoutlist, NULL);
404 data->state.timeoutlist = NULL;
407 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
408 the multi handle, since that function uses the magic
411 if(data->state.rangestringalloc)
412 free(data->state.range);
414 /* Free the pathbuffer */
415 Curl_safefree(data->state.pathbuffer);
416 data->state.path = NULL;
418 /* freed here just in case DONE wasn't called */
419 Curl_free_request_state(data);
421 /* Close down all open SSL info and sessions */
422 Curl_ssl_close_all(data);
423 Curl_safefree(data->state.first_host);
424 Curl_safefree(data->state.scratch);
425 Curl_ssl_free_certinfo(data);
427 if(data->change.referer_alloc) {
428 Curl_safefree(data->change.referer);
429 data->change.referer_alloc = FALSE;
431 data->change.referer = NULL;
433 if(data->change.url_alloc) {
434 Curl_safefree(data->change.url);
435 data->change.url_alloc = FALSE;
437 data->change.url = NULL;
439 Curl_safefree(data->state.headerbuff);
441 Curl_flush_cookies(data, 1);
443 Curl_digest_cleanup(data);
445 Curl_safefree(data->info.contenttype);
446 Curl_safefree(data->info.wouldredirect);
448 /* this destroys the channel and we cannot use it anymore after this */
449 Curl_resolver_cleanup(data->state.resolver);
451 Curl_convert_close(data);
453 /* No longer a dirty share, if it exists */
455 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
456 data->share->dirty--;
457 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
466 * Initialize the UserDefined fields within a SessionHandle.
467 * This may be safely called on a new or existing SessionHandle.
469 CURLcode Curl_init_userdefined(struct UserDefined *set)
471 CURLcode res = CURLE_OK;
473 set->out = stdout; /* default output to stdout */
474 set->in = stdin; /* default input from stdin */
475 set->err = stderr; /* default stderr to stderr */
477 /* use fwrite as default function to store output */
478 set->fwrite_func = (curl_write_callback)fwrite;
480 /* use fread as default function to read input */
481 set->fread_func = (curl_read_callback)fread;
482 set->is_fread_set = 0;
483 set->is_fwrite_set = 0;
485 set->seek_func = ZERO_NULL;
486 set->seek_client = ZERO_NULL;
488 /* conversion callbacks for non-ASCII hosts */
489 set->convfromnetwork = ZERO_NULL;
490 set->convtonetwork = ZERO_NULL;
491 set->convfromutf8 = ZERO_NULL;
493 set->filesize = -1; /* we don't know the size */
494 set->postfieldsize = -1; /* unknown size */
495 set->maxredirs = -1; /* allow any amount by default */
497 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
498 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
499 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
500 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
501 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
502 set->ftp_filemethod = FTPFILE_MULTICWD;
504 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
506 /* Set the default size of the SSL session ID cache */
507 set->ssl.max_ssl_sessions = 5;
509 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
510 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
511 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
512 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
514 /* make libcurl quiet by default: */
515 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
518 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
519 * switched off unless wanted.
521 set->ssl.verifypeer = TRUE;
522 set->ssl.verifyhost = TRUE;
524 set->ssl.authtype = CURL_TLSAUTH_NONE;
526 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
528 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
530 set->new_file_perms = 0644; /* Default permissions */
531 set->new_directory_perms = 0755; /* Default permissions */
533 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
534 define since we internally only use the lower 16 bits for the passed
535 in bitmask to not conflict with the private bits */
536 set->allowed_protocols = CURLPROTO_ALL;
537 set->redir_protocols =
538 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
540 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
542 * disallow unprotected protection negotiation NEC reference implementation
543 * seem not to follow rfc1961 section 4.3/4.4
545 set->socks5_gssapi_nec = FALSE;
546 /* set default gssapi service name */
547 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
548 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
553 /* This is our preferred CA cert bundle/path since install time */
554 #if defined(CURL_CA_BUNDLE)
555 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
556 #elif defined(CURL_CA_PATH)
557 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
560 set->wildcardmatch = FALSE;
561 set->chunk_bgn = ZERO_NULL;
562 set->chunk_end = ZERO_NULL;
564 /* tcp keepalives are disabled by default, but provide reasonable values for
565 * the interval and idle times.
567 set->tcp_keepalive = FALSE;
568 set->tcp_keepintvl = 60;
569 set->tcp_keepidle = 60;
571 set->ssl_enable_npn = TRUE;
572 set->ssl_enable_alpn = TRUE;
574 set->expect_100_timeout = 1000L; /* Wait for a second by default. */
581 * @param curl is a pointer to a sessionhandle pointer that gets set by this
586 CURLcode Curl_open(struct SessionHandle **curl)
588 CURLcode res = CURLE_OK;
589 struct SessionHandle *data;
592 /* Very simple start-up: alloc the struct, init it with zeroes and return */
593 data = calloc(1, sizeof(struct SessionHandle));
595 /* this is a very serious error */
596 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
597 return CURLE_OUT_OF_MEMORY;
600 data->magic = CURLEASY_MAGIC_NUMBER;
602 status = Curl_resolver_init(&data->state.resolver);
604 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
609 /* We do some initial setup here, all those fields that can't be just 0 */
611 data->state.headerbuff = malloc(HEADERSIZE);
612 if(!data->state.headerbuff) {
613 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
614 res = CURLE_OUT_OF_MEMORY;
617 res = Curl_init_userdefined(&data->set);
619 data->state.headersize=HEADERSIZE;
621 Curl_convert_init(data);
623 /* most recent connection is not yet defined */
624 data->state.lastconnect = NULL;
626 data->progress.flags |= PGRS_HIDE;
627 data->state.current_speed = -1; /* init to negative == impossible */
629 data->wildcard.state = CURLWC_INIT;
630 data->wildcard.filelist = NULL;
631 data->set.fnmatch = ZERO_NULL;
632 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
636 Curl_resolver_cleanup(data->state.resolver);
637 if(data->state.headerbuff)
638 free(data->state.headerbuff);
649 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
653 CURLcode result = CURLE_OK;
655 #ifndef CURL_DISABLE_HTTP
660 case CURLOPT_DNS_CACHE_TIMEOUT:
661 data->set.dns_cache_timeout = va_arg(param, long);
663 case CURLOPT_DNS_USE_GLOBAL_CACHE:
664 /* remember we want this enabled */
665 arg = va_arg(param, long);
666 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
668 case CURLOPT_SSL_CIPHER_LIST:
669 /* set a list of cipher we want to use in the SSL connection */
670 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
671 va_arg(param, char *));
674 case CURLOPT_RANDOM_FILE:
676 * This is the path name to a file that contains random data to seed
677 * the random SSL stuff with. The file is only used for reading.
679 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
680 va_arg(param, char *));
682 case CURLOPT_EGDSOCKET:
684 * The Entropy Gathering Daemon socket pathname
686 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
687 va_arg(param, char *));
689 case CURLOPT_MAXCONNECTS:
691 * Set the absolute number of maximum simultaneous alive connection that
692 * libcurl is allowed to have.
694 data->set.maxconnects = va_arg(param, long);
696 case CURLOPT_FORBID_REUSE:
698 * When this transfer is done, it must not be left to be reused by a
699 * subsequent transfer but shall be closed immediately.
701 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
703 case CURLOPT_FRESH_CONNECT:
705 * This transfer shall not use a previously cached connection but
706 * should be made with a fresh new connect!
708 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
710 case CURLOPT_VERBOSE:
712 * Verbose means infof() calls that give a lot of information about
713 * the connection and transfer procedures as well as internal choices.
715 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
719 * Set to include the header in the general data output stream.
721 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
723 case CURLOPT_NOPROGRESS:
725 * Shut off the internal supported progress meter
727 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
728 if(data->set.hide_progress)
729 data->progress.flags |= PGRS_HIDE;
731 data->progress.flags &= ~PGRS_HIDE;
735 * Do not include the body part in the output data stream.
737 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
739 case CURLOPT_FAILONERROR:
741 * Don't output the >=300 error code HTML-page, but instead only
744 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
749 * We want to sent data to the remote host. If this is HTTP, that equals
750 * using the PUT request.
752 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
753 if(data->set.upload) {
754 /* If this is HTTP, PUT is what's needed to "upload" */
755 data->set.httpreq = HTTPREQ_PUT;
756 data->set.opt_no_body = FALSE; /* this is implied */
759 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
760 then this can be changed to HEAD later on) */
761 data->set.httpreq = HTTPREQ_GET;
763 case CURLOPT_FILETIME:
765 * Try to get the file time of the remote document. The time will
766 * later (possibly) become available using curl_easy_getinfo().
768 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
770 case CURLOPT_FTP_CREATE_MISSING_DIRS:
772 * An FTP option that modifies an upload to create missing directories on
775 switch(va_arg(param, long)) {
777 data->set.ftp_create_missing_dirs = 0;
780 data->set.ftp_create_missing_dirs = 1;
783 data->set.ftp_create_missing_dirs = 2;
786 /* reserve other values for future use */
787 result = CURLE_UNKNOWN_OPTION;
791 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
793 * Option that specifies how quickly an server response must be obtained
794 * before it is considered failure. For pingpong protocols.
796 data->set.server_response_timeout = va_arg( param , long ) * 1000;
798 case CURLOPT_TFTP_BLKSIZE:
800 * TFTP option that specifies the block size to use for data transmission
802 data->set.tftp_blksize = va_arg(param, long);
804 case CURLOPT_DIRLISTONLY:
806 * An option that changes the command to one that asks for a list
807 * only, no file info details.
809 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
813 * We want to upload and append to an existing file.
815 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
817 case CURLOPT_FTP_FILEMETHOD:
819 * How do access files over FTP.
821 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
825 * Parse the $HOME/.netrc file
827 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
829 case CURLOPT_NETRC_FILE:
831 * Use this file instead of the $HOME/.netrc file
833 result = setstropt(&data->set.str[STRING_NETRC_FILE],
834 va_arg(param, char *));
836 case CURLOPT_TRANSFERTEXT:
838 * This option was previously named 'FTPASCII'. Renamed to work with
839 * more protocols than merely FTP.
841 * Transfer using ASCII (instead of BINARY).
843 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
845 case CURLOPT_TIMECONDITION:
847 * Set HTTP time condition. This must be one of the defines in the
848 * curl/curl.h header file.
850 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
852 case CURLOPT_TIMEVALUE:
854 * This is the value to compare with the remote document with the
855 * method set with CURLOPT_TIMECONDITION
857 data->set.timevalue = (time_t)va_arg(param, long);
859 case CURLOPT_SSLVERSION:
861 * Set explicit SSL version to try to connect with, as some SSL
862 * implementations are lame.
864 data->set.ssl.version = va_arg(param, long);
867 #ifndef CURL_DISABLE_HTTP
868 case CURLOPT_AUTOREFERER:
870 * Switch on automatic referer that gets set if curl follows locations.
872 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
875 case CURLOPT_ACCEPT_ENCODING:
877 * String to use at the value of Accept-Encoding header.
879 * If the encoding is set to "" we use an Accept-Encoding header that
880 * encompasses all the encodings we support.
881 * If the encoding is set to NULL we don't send an Accept-Encoding header
882 * and ignore an received Content-Encoding header.
885 argptr = va_arg(param, char *);
886 result = setstropt(&data->set.str[STRING_ENCODING],
887 (argptr && !*argptr)?
888 (char *) ALL_CONTENT_ENCODINGS: argptr);
891 case CURLOPT_TRANSFER_ENCODING:
892 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
895 case CURLOPT_FOLLOWLOCATION:
897 * Follow Location: header hints on a HTTP-server.
899 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
902 case CURLOPT_UNRESTRICTED_AUTH:
904 * Send authentication (user+password) when following locations, even when
907 data->set.http_disable_hostname_check_before_authentication =
908 (0 != va_arg(param, long))?TRUE:FALSE;
911 case CURLOPT_MAXREDIRS:
913 * The maximum amount of hops you allow curl to follow Location:
914 * headers. This should mostly be used to detect never-ending loops.
916 data->set.maxredirs = va_arg(param, long);
919 case CURLOPT_POSTREDIR:
922 * Set the behaviour of POST when redirecting
923 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
924 * CURL_REDIR_POST_301 - POST is kept as POST after 301
925 * CURL_REDIR_POST_302 - POST is kept as POST after 302
926 * CURL_REDIR_POST_303 - POST is kept as POST after 303
927 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
928 * other - POST is kept as POST after 301 and 302
930 int postRedir = curlx_sltosi(va_arg(param, long));
931 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
936 /* Does this option serve a purpose anymore? Yes it does, when
937 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
939 if(va_arg(param, long)) {
940 data->set.httpreq = HTTPREQ_POST;
941 data->set.opt_no_body = FALSE; /* this is implied */
944 data->set.httpreq = HTTPREQ_GET;
947 case CURLOPT_COPYPOSTFIELDS:
949 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
950 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
951 * CURLOPT_COPYPOSTFIELDS and not altered later.
953 argptr = va_arg(param, char *);
955 if(!argptr || data->set.postfieldsize == -1)
956 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
959 * Check that requested length does not overflow the size_t type.
962 if((data->set.postfieldsize < 0) ||
963 ((sizeof(curl_off_t) != sizeof(size_t)) &&
964 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
965 result = CURLE_OUT_OF_MEMORY;
969 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
971 /* Allocate even when size == 0. This satisfies the need of possible
972 later address compare to detect the COPYPOSTFIELDS mode, and
973 to mark that postfields is used rather than read function or
976 p = malloc((size_t)(data->set.postfieldsize?
977 data->set.postfieldsize:1));
980 result = CURLE_OUT_OF_MEMORY;
982 if(data->set.postfieldsize)
983 memcpy(p, argptr, (size_t)data->set.postfieldsize);
985 data->set.str[STRING_COPYPOSTFIELDS] = p;
990 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
991 data->set.httpreq = HTTPREQ_POST;
994 case CURLOPT_POSTFIELDS:
996 * Like above, but use static data instead of copying it.
998 data->set.postfields = va_arg(param, void *);
999 /* Release old copied data. */
1000 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1001 data->set.httpreq = HTTPREQ_POST;
1004 case CURLOPT_POSTFIELDSIZE:
1006 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1007 * figure it out. Enables binary posts.
1009 bigsize = va_arg(param, long);
1011 if(data->set.postfieldsize < bigsize &&
1012 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1013 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1014 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1015 data->set.postfields = NULL;
1018 data->set.postfieldsize = bigsize;
1021 case CURLOPT_POSTFIELDSIZE_LARGE:
1023 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1024 * figure it out. Enables binary posts.
1026 bigsize = va_arg(param, curl_off_t);
1028 if(data->set.postfieldsize < bigsize &&
1029 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1030 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1031 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1032 data->set.postfields = NULL;
1035 data->set.postfieldsize = bigsize;
1038 case CURLOPT_HTTPPOST:
1040 * Set to make us do HTTP POST
1042 data->set.httppost = va_arg(param, struct curl_httppost *);
1043 data->set.httpreq = HTTPREQ_POST_FORM;
1044 data->set.opt_no_body = FALSE; /* this is implied */
1047 case CURLOPT_REFERER:
1049 * String to set in the HTTP Referer: field.
1051 if(data->change.referer_alloc) {
1052 Curl_safefree(data->change.referer);
1053 data->change.referer_alloc = FALSE;
1055 result = setstropt(&data->set.str[STRING_SET_REFERER],
1056 va_arg(param, char *));
1057 data->change.referer = data->set.str[STRING_SET_REFERER];
1060 case CURLOPT_USERAGENT:
1062 * String to use in the HTTP User-Agent field
1064 result = setstropt(&data->set.str[STRING_USERAGENT],
1065 va_arg(param, char *));
1068 case CURLOPT_HTTPHEADER:
1070 * Set a list with HTTP headers to use (or replace internals with)
1072 data->set.headers = va_arg(param, struct curl_slist *);
1075 case CURLOPT_PROXYHEADER:
1077 * Set a list with proxy headers to use (or replace internals with)
1079 * Since CURLOPT_HTTPHEADER was the only way to set HTTP headers for a
1080 * long time we remain doing it this way until CURLOPT_PROXYHEADER is
1081 * used. As soon as this option has been used, if set to anything but
1082 * NULL, custom headers for proxies are only picked from this list.
1084 * Set this option to NULL to restore the previous behavior.
1086 data->set.proxyheaders = va_arg(param, struct curl_slist *);
1089 case CURLOPT_HEADEROPT:
1091 * Set header option.
1093 arg = va_arg(param, long);
1094 data->set.sep_headers = (arg & CURLHEADER_SEPARATE)? TRUE: FALSE;
1097 case CURLOPT_HTTP200ALIASES:
1099 * Set a list of aliases for HTTP 200 in response header
1101 data->set.http200aliases = va_arg(param, struct curl_slist *);
1104 #if !defined(CURL_DISABLE_COOKIES)
1105 case CURLOPT_COOKIE:
1107 * Cookie string to send to the remote server in the request.
1109 result = setstropt(&data->set.str[STRING_COOKIE],
1110 va_arg(param, char *));
1113 case CURLOPT_COOKIEFILE:
1115 * Set cookie file to read and parse. Can be used multiple times.
1117 argptr = (char *)va_arg(param, void *);
1119 struct curl_slist *cl;
1120 /* append the cookie file name to the list of file names, and deal with
1122 cl = curl_slist_append(data->change.cookielist, argptr);
1124 curl_slist_free_all(data->change.cookielist);
1125 data->change.cookielist = NULL;
1126 return CURLE_OUT_OF_MEMORY;
1128 data->change.cookielist = cl; /* store the list for later use */
1132 case CURLOPT_COOKIEJAR:
1134 * Set cookie file name to dump all cookies to when we're done.
1136 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1137 va_arg(param, char *));
1140 * Activate the cookie parser. This may or may not already
1143 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1144 data->set.cookiesession);
1147 case CURLOPT_COOKIESESSION:
1149 * Set this option to TRUE to start a new "cookie session". It will
1150 * prevent the forthcoming read-cookies-from-file actions to accept
1151 * cookies that are marked as being session cookies, as they belong to a
1154 * In the original Netscape cookie spec, "session cookies" are cookies
1155 * with no expire date set. RFC2109 describes the same action if no
1156 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1157 * a 'Discard' action that can enforce the discard even for cookies that
1160 * We run mostly with the original cookie spec, as hardly anyone implements
1163 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1166 case CURLOPT_COOKIELIST:
1167 argptr = va_arg(param, char *);
1172 if(Curl_raw_equal(argptr, "ALL")) {
1173 /* clear all cookies */
1174 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1175 Curl_cookie_clearall(data->cookies);
1176 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1178 else if(Curl_raw_equal(argptr, "SESS")) {
1179 /* clear session cookies */
1180 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1181 Curl_cookie_clearsess(data->cookies);
1182 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1184 else if(Curl_raw_equal(argptr, "FLUSH")) {
1185 /* flush cookies to file, takes care of the locking */
1186 Curl_flush_cookies(data, 0);
1190 /* if cookie engine was not running, activate it */
1191 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1193 argptr = strdup(argptr);
1195 result = CURLE_OUT_OF_MEMORY;
1198 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1200 if(checkprefix("Set-Cookie:", argptr))
1201 /* HTTP Header format line */
1202 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1205 /* Netscape format line */
1206 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1208 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1214 #endif /* CURL_DISABLE_COOKIES */
1216 case CURLOPT_HTTPGET:
1218 * Set to force us do HTTP GET
1220 if(va_arg(param, long)) {
1221 data->set.httpreq = HTTPREQ_GET;
1222 data->set.upload = FALSE; /* switch off upload */
1223 data->set.opt_no_body = FALSE; /* this is implied */
1227 case CURLOPT_HTTP_VERSION:
1229 * This sets a requested HTTP version to be used. The value is one of
1230 * the listed enums in curl/curl.h.
1232 arg = va_arg(param, long);
1234 if(arg == CURL_HTTP_VERSION_2_0)
1235 return CURLE_UNSUPPORTED_PROTOCOL;
1237 data->set.httpversion = arg;
1240 case CURLOPT_HTTPAUTH:
1242 * Set HTTP Authentication type BITMASK.
1247 unsigned long auth = va_arg(param, unsigned long);
1249 if(auth == CURLAUTH_NONE) {
1250 data->set.httpauth = auth;
1254 /* the DIGEST_IE bit is only used to set a special marker, for all the
1255 rest we need to handle it as normal DIGEST */
1256 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1258 if(auth & CURLAUTH_DIGEST_IE) {
1259 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1260 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1263 /* switch off bits we can't support */
1265 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1266 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1267 #elif !defined(NTLM_WB_ENABLED)
1268 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1270 #ifndef USE_HTTP_NEGOTIATE
1271 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1275 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1278 while(bitcheck < 31) {
1279 if(auth & (1UL << bitcheck++)) {
1285 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1287 data->set.httpauth = auth;
1291 case CURLOPT_EXPECT_100_TIMEOUT_MS:
1293 * Time to wait for a response to a HTTP request containing an
1294 * Expect: 100-continue header before sending the data anyway.
1296 data->set.expect_100_timeout = va_arg(param, long);
1299 #endif /* CURL_DISABLE_HTTP */
1301 case CURLOPT_CUSTOMREQUEST:
1303 * Set a custom string to use as request
1305 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1306 va_arg(param, char *));
1309 data->set.httpreq = HTTPREQ_CUSTOM;
1310 here, we continue as if we were using the already set type
1311 and this just changes the actual request keyword */
1314 #ifndef CURL_DISABLE_PROXY
1315 case CURLOPT_HTTPPROXYTUNNEL:
1317 * Tunnel operations through the proxy instead of normal proxy use
1319 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1322 case CURLOPT_PROXYPORT:
1324 * Explicitly set HTTP proxy port number.
1326 data->set.proxyport = va_arg(param, long);
1329 case CURLOPT_PROXYAUTH:
1331 * Set HTTP Authentication type BITMASK.
1336 unsigned long auth = va_arg(param, unsigned long);
1338 if(auth == CURLAUTH_NONE) {
1339 data->set.proxyauth = auth;
1343 /* the DIGEST_IE bit is only used to set a special marker, for all the
1344 rest we need to handle it as normal DIGEST */
1345 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1347 if(auth & CURLAUTH_DIGEST_IE) {
1348 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1349 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1351 /* switch off bits we can't support */
1353 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1354 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1355 #elif !defined(NTLM_WB_ENABLED)
1356 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1358 #ifndef USE_HTTP_NEGOTIATE
1359 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1363 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1366 while(bitcheck < 31) {
1367 if(auth & (1UL << bitcheck++)) {
1373 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1375 data->set.proxyauth = auth;
1381 * Set proxy server:port to use as HTTP proxy.
1383 * If the proxy is set to "" we explicitly say that we don't want to use a
1384 * proxy (even though there might be environment variables saying so).
1386 * Setting it to NULL, means no proxy but allows the environment variables
1389 result = setstropt(&data->set.str[STRING_PROXY],
1390 va_arg(param, char *));
1393 case CURLOPT_PROXYTYPE:
1395 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1397 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1400 case CURLOPT_PROXY_TRANSFER_MODE:
1402 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1404 switch (va_arg(param, long)) {
1406 data->set.proxy_transfer_mode = FALSE;
1409 data->set.proxy_transfer_mode = TRUE;
1412 /* reserve other values for future use */
1413 result = CURLE_UNKNOWN_OPTION;
1417 #endif /* CURL_DISABLE_PROXY */
1419 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1420 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1422 * Set gssapi service name
1424 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1425 va_arg(param, char *));
1428 case CURLOPT_SOCKS5_GSSAPI_NEC:
1430 * set flag for nec socks5 support
1432 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1436 case CURLOPT_HEADERDATA:
1438 * Custom pointer to pass the header write callback function
1440 data->set.writeheader = (void *)va_arg(param, void *);
1442 case CURLOPT_ERRORBUFFER:
1444 * Error buffer provided by the caller to get the human readable
1447 data->set.errorbuffer = va_arg(param, char *);
1449 case CURLOPT_WRITEDATA:
1451 * FILE pointer to write to. Or possibly
1452 * used as argument to the write callback.
1454 data->set.out = va_arg(param, void *);
1456 case CURLOPT_FTPPORT:
1458 * Use FTP PORT, this also specifies which IP address to use
1460 result = setstropt(&data->set.str[STRING_FTPPORT],
1461 va_arg(param, char *));
1462 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1466 case CURLOPT_FTP_USE_EPRT:
1467 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1470 case CURLOPT_FTP_USE_EPSV:
1471 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1474 case CURLOPT_FTP_USE_PRET:
1475 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1478 case CURLOPT_FTP_SSL_CCC:
1479 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1482 case CURLOPT_FTP_SKIP_PASV_IP:
1484 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1485 * bypass of the IP address in PASV responses.
1487 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1490 case CURLOPT_INFILE:
1492 * FILE pointer to read the file to be uploaded from. Or possibly
1493 * used as argument to the read callback.
1495 data->set.in = va_arg(param, void *);
1497 case CURLOPT_INFILESIZE:
1499 * If known, this should inform curl about the file size of the
1500 * to-be-uploaded file.
1502 data->set.filesize = va_arg(param, long);
1504 case CURLOPT_INFILESIZE_LARGE:
1506 * If known, this should inform curl about the file size of the
1507 * to-be-uploaded file.
1509 data->set.filesize = va_arg(param, curl_off_t);
1511 case CURLOPT_LOW_SPEED_LIMIT:
1513 * The low speed limit that if transfers are below this for
1514 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1516 data->set.low_speed_limit=va_arg(param, long);
1518 case CURLOPT_MAX_SEND_SPEED_LARGE:
1520 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1521 * bytes per second the transfer is throttled..
1523 data->set.max_send_speed=va_arg(param, curl_off_t);
1525 case CURLOPT_MAX_RECV_SPEED_LARGE:
1527 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1528 * second the transfer is throttled..
1530 data->set.max_recv_speed=va_arg(param, curl_off_t);
1532 case CURLOPT_LOW_SPEED_TIME:
1534 * The low speed time that if transfers are below the set
1535 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1537 data->set.low_speed_time=va_arg(param, long);
1543 if(data->change.url_alloc) {
1544 /* the already set URL is allocated, free it first! */
1545 Curl_safefree(data->change.url);
1546 data->change.url_alloc = FALSE;
1548 result = setstropt(&data->set.str[STRING_SET_URL],
1549 va_arg(param, char *));
1550 data->change.url = data->set.str[STRING_SET_URL];
1554 * The port number to use when getting the URL
1556 data->set.use_port = va_arg(param, long);
1558 case CURLOPT_TIMEOUT:
1560 * The maximum time you allow curl to use for a single transfer
1563 data->set.timeout = va_arg(param, long) * 1000L;
1566 case CURLOPT_TIMEOUT_MS:
1567 data->set.timeout = va_arg(param, long);
1570 case CURLOPT_CONNECTTIMEOUT:
1572 * The maximum time you allow curl to use to connect.
1574 data->set.connecttimeout = va_arg(param, long) * 1000L;
1577 case CURLOPT_CONNECTTIMEOUT_MS:
1578 data->set.connecttimeout = va_arg(param, long);
1581 case CURLOPT_ACCEPTTIMEOUT_MS:
1583 * The maximum time you allow curl to wait for server connect
1585 data->set.accepttimeout = va_arg(param, long);
1588 case CURLOPT_USERPWD:
1590 * user:password to use in the operation
1592 result = setstropt_userpwd(va_arg(param, char *),
1593 &data->set.str[STRING_USERNAME],
1594 &data->set.str[STRING_PASSWORD]);
1597 case CURLOPT_USERNAME:
1599 * authentication user name to use in the operation
1601 result = setstropt(&data->set.str[STRING_USERNAME],
1602 va_arg(param, char *));
1605 case CURLOPT_PASSWORD:
1607 * authentication password to use in the operation
1609 result = setstropt(&data->set.str[STRING_PASSWORD],
1610 va_arg(param, char *));
1613 case CURLOPT_LOGIN_OPTIONS:
1615 * authentication options to use in the operation
1617 result = setstropt(&data->set.str[STRING_OPTIONS],
1618 va_arg(param, char *));
1621 case CURLOPT_XOAUTH2_BEARER:
1623 * XOAUTH2 bearer token to use in the operation
1625 result = setstropt(&data->set.str[STRING_BEARER],
1626 va_arg(param, char *));
1629 case CURLOPT_POSTQUOTE:
1631 * List of RAW FTP commands to use after a transfer
1633 data->set.postquote = va_arg(param, struct curl_slist *);
1635 case CURLOPT_PREQUOTE:
1637 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1639 data->set.prequote = va_arg(param, struct curl_slist *);
1643 * List of RAW FTP commands to use before a transfer
1645 data->set.quote = va_arg(param, struct curl_slist *);
1647 case CURLOPT_RESOLVE:
1649 * List of NAME:[address] names to populate the DNS cache with
1650 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1652 * Names added with this API will remain in the cache until explicitly
1653 * removed or the handle is cleaned up.
1655 * This API can remove any name from the DNS cache, but only entries
1656 * that aren't actually in use right now will be pruned immediately.
1658 data->set.resolve = va_arg(param, struct curl_slist *);
1659 data->change.resolve = data->set.resolve;
1661 case CURLOPT_PROGRESSFUNCTION:
1663 * Progress callback function
1665 data->set.fprogress = va_arg(param, curl_progress_callback);
1666 if(data->set.fprogress)
1667 data->progress.callback = TRUE; /* no longer internal */
1669 data->progress.callback = FALSE; /* NULL enforces internal */
1672 case CURLOPT_XFERINFOFUNCTION:
1674 * Transfer info callback function
1676 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1677 if(data->set.fxferinfo)
1678 data->progress.callback = TRUE; /* no longer internal */
1680 data->progress.callback = FALSE; /* NULL enforces internal */
1684 case CURLOPT_PROGRESSDATA:
1686 * Custom client data to pass to the progress callback
1688 data->set.progress_client = va_arg(param, void *);
1691 #ifndef CURL_DISABLE_PROXY
1692 case CURLOPT_PROXYUSERPWD:
1694 * user:password needed to use the proxy
1696 result = setstropt_userpwd(va_arg(param, char *),
1697 &data->set.str[STRING_PROXYUSERNAME],
1698 &data->set.str[STRING_PROXYPASSWORD]);
1700 case CURLOPT_PROXYUSERNAME:
1702 * authentication user name to use in the operation
1704 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1705 va_arg(param, char *));
1707 case CURLOPT_PROXYPASSWORD:
1709 * authentication password to use in the operation
1711 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1712 va_arg(param, char *));
1714 case CURLOPT_NOPROXY:
1716 * proxy exception list
1718 result = setstropt(&data->set.str[STRING_NOPROXY],
1719 va_arg(param, char *));
1725 * What range of the file you want to transfer
1727 result = setstropt(&data->set.str[STRING_SET_RANGE],
1728 va_arg(param, char *));
1730 case CURLOPT_RESUME_FROM:
1732 * Resume transfer at the give file position
1734 data->set.set_resume_from = va_arg(param, long);
1736 case CURLOPT_RESUME_FROM_LARGE:
1738 * Resume transfer at the give file position
1740 data->set.set_resume_from = va_arg(param, curl_off_t);
1742 case CURLOPT_DEBUGFUNCTION:
1744 * stderr write callback.
1746 data->set.fdebug = va_arg(param, curl_debug_callback);
1748 * if the callback provided is NULL, it'll use the default callback
1751 case CURLOPT_DEBUGDATA:
1753 * Set to a void * that should receive all error writes. This
1754 * defaults to CURLOPT_STDERR for normal operations.
1756 data->set.debugdata = va_arg(param, void *);
1758 case CURLOPT_STDERR:
1760 * Set to a FILE * that should receive all error writes. This
1761 * defaults to stderr for normal operations.
1763 data->set.err = va_arg(param, FILE *);
1765 data->set.err = stderr;
1767 case CURLOPT_HEADERFUNCTION:
1769 * Set header write callback
1771 data->set.fwrite_header = va_arg(param, curl_write_callback);
1773 case CURLOPT_WRITEFUNCTION:
1775 * Set data write callback
1777 data->set.fwrite_func = va_arg(param, curl_write_callback);
1778 if(!data->set.fwrite_func) {
1779 data->set.is_fwrite_set = 0;
1780 /* When set to NULL, reset to our internal default function */
1781 data->set.fwrite_func = (curl_write_callback)fwrite;
1784 data->set.is_fwrite_set = 1;
1786 case CURLOPT_READFUNCTION:
1788 * Read data callback
1790 data->set.fread_func = va_arg(param, curl_read_callback);
1791 if(!data->set.fread_func) {
1792 data->set.is_fread_set = 0;
1793 /* When set to NULL, reset to our internal default function */
1794 data->set.fread_func = (curl_read_callback)fread;
1797 data->set.is_fread_set = 1;
1799 case CURLOPT_SEEKFUNCTION:
1801 * Seek callback. Might be NULL.
1803 data->set.seek_func = va_arg(param, curl_seek_callback);
1805 case CURLOPT_SEEKDATA:
1807 * Seek control callback. Might be NULL.
1809 data->set.seek_client = va_arg(param, void *);
1811 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1813 * "Convert from network encoding" callback
1815 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1817 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1819 * "Convert to network encoding" callback
1821 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1823 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1825 * "Convert from UTF-8 encoding" callback
1827 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1829 case CURLOPT_IOCTLFUNCTION:
1831 * I/O control callback. Might be NULL.
1833 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1835 case CURLOPT_IOCTLDATA:
1837 * I/O control data pointer. Might be NULL.
1839 data->set.ioctl_client = va_arg(param, void *);
1841 case CURLOPT_SSLCERT:
1843 * String that holds file name of the SSL certificate to use
1845 result = setstropt(&data->set.str[STRING_CERT],
1846 va_arg(param, char *));
1848 case CURLOPT_SSLCERTTYPE:
1850 * String that holds file type of the SSL certificate to use
1852 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1853 va_arg(param, char *));
1855 case CURLOPT_SSLKEY:
1857 * String that holds file name of the SSL key to use
1859 result = setstropt(&data->set.str[STRING_KEY],
1860 va_arg(param, char *));
1862 case CURLOPT_SSLKEYTYPE:
1864 * String that holds file type of the SSL key to use
1866 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1867 va_arg(param, char *));
1869 case CURLOPT_KEYPASSWD:
1871 * String that holds the SSL or SSH private key password.
1873 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1874 va_arg(param, char *));
1876 case CURLOPT_SSLENGINE:
1878 * String that holds the SSL crypto engine.
1880 argptr = va_arg(param, char *);
1881 if(argptr && argptr[0])
1882 result = Curl_ssl_set_engine(data, argptr);
1885 case CURLOPT_SSLENGINE_DEFAULT:
1887 * flag to set engine as default.
1889 result = Curl_ssl_set_engine_default(data);
1893 * Kludgy option to enable CRLF conversions. Subject for removal.
1895 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1898 case CURLOPT_INTERFACE:
1900 * Set what interface or address/hostname to bind the socket to when
1901 * performing an operation and thus what from-IP your connection will use.
1903 result = setstropt(&data->set.str[STRING_DEVICE],
1904 va_arg(param, char *));
1906 case CURLOPT_LOCALPORT:
1908 * Set what local port to bind the socket to when performing an operation.
1910 data->set.localport = curlx_sltous(va_arg(param, long));
1912 case CURLOPT_LOCALPORTRANGE:
1914 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1916 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1918 case CURLOPT_KRBLEVEL:
1920 * A string that defines the kerberos security level.
1922 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1923 va_arg(param, char *));
1924 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1926 case CURLOPT_GSSAPI_DELEGATION:
1928 * GSSAPI credential delegation
1930 data->set.gssapi_delegation = va_arg(param, long);
1932 case CURLOPT_SSL_VERIFYPEER:
1934 * Enable peer SSL verifying.
1936 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1938 case CURLOPT_SSL_VERIFYHOST:
1940 * Enable verification of the host name in the peer certificate
1942 arg = va_arg(param, long);
1944 /* Obviously people are not reading documentation and too many thought
1945 this argument took a boolean when it wasn't and misused it. We thus ban
1946 1 as a sensible input and we warn about its use. Then we only have the
1947 2 action internally stored as TRUE. */
1950 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1951 return CURLE_BAD_FUNCTION_ARGUMENT;
1954 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1957 /* since these two options are only possible to use on an OpenSSL-
1958 powered libcurl we #ifdef them on this condition so that libcurls
1959 built against other SSL libs will return a proper error when trying
1960 to set this option! */
1961 case CURLOPT_SSL_CTX_FUNCTION:
1963 * Set a SSL_CTX callback
1965 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1967 case CURLOPT_SSL_CTX_DATA:
1969 * Set a SSL_CTX callback parameter pointer
1971 data->set.ssl.fsslctxp = va_arg(param, void *);
1974 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1976 case CURLOPT_CERTINFO:
1977 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1980 case CURLOPT_CAINFO:
1982 * Set CA info for SSL connection. Specify file name of the CA certificate
1984 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1985 va_arg(param, char *));
1987 case CURLOPT_CAPATH:
1989 * Set CA path info for SSL connection. Specify directory name of the CA
1990 * certificates which have been prepared using openssl c_rehash utility.
1992 /* This does not work on windows. */
1993 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1994 va_arg(param, char *));
1996 case CURLOPT_CRLFILE:
1998 * Set CRL file info for SSL connection. Specify file name of the CRL
1999 * to check certificates revocation
2001 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
2002 va_arg(param, char *));
2004 case CURLOPT_ISSUERCERT:
2006 * Set Issuer certificate file
2007 * to check certificates issuer
2009 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
2010 va_arg(param, char *));
2012 case CURLOPT_TELNETOPTIONS:
2014 * Set a linked list of telnet options
2016 data->set.telnet_options = va_arg(param, struct curl_slist *);
2019 case CURLOPT_BUFFERSIZE:
2021 * The application kindly asks for a differently sized receive buffer.
2022 * If it seems reasonable, we'll use it.
2024 data->set.buffer_size = va_arg(param, long);
2026 if((data->set.buffer_size> (BUFSIZE -1 )) ||
2027 (data->set.buffer_size < 1))
2028 data->set.buffer_size = 0; /* huge internal default */
2032 case CURLOPT_NOSIGNAL:
2034 * The application asks not to set any signal() or alarm() handlers,
2035 * even when using a timeout.
2037 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2042 struct Curl_share *set;
2043 set = va_arg(param, struct Curl_share *);
2045 /* disconnect from old share, if any */
2047 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2049 if(data->dns.hostcachetype == HCACHE_SHARED) {
2050 data->dns.hostcache = NULL;
2051 data->dns.hostcachetype = HCACHE_NONE;
2054 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2055 if(data->share->cookies == data->cookies)
2056 data->cookies = NULL;
2059 if(data->share->sslsession == data->state.session)
2060 data->state.session = NULL;
2062 data->share->dirty--;
2064 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2068 /* use new share if it set */
2072 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2074 data->share->dirty++;
2076 if(data->share->hostcache) {
2077 /* use shared host cache */
2078 data->dns.hostcache = data->share->hostcache;
2079 data->dns.hostcachetype = HCACHE_SHARED;
2081 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2082 if(data->share->cookies) {
2083 /* use shared cookie list, first free own one if any */
2085 Curl_cookie_cleanup(data->cookies);
2086 /* enable cookies since we now use a share that uses cookies! */
2087 data->cookies = data->share->cookies;
2089 #endif /* CURL_DISABLE_HTTP */
2090 if(data->share->sslsession) {
2091 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2092 data->state.session = data->share->sslsession;
2094 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2097 /* check for host cache not needed,
2098 * it will be done by curl_easy_perform */
2102 case CURLOPT_PRIVATE:
2104 * Set private data pointer.
2106 data->set.private_data = va_arg(param, void *);
2109 case CURLOPT_MAXFILESIZE:
2111 * Set the maximum size of a file to download.
2113 data->set.max_filesize = va_arg(param, long);
2117 case CURLOPT_USE_SSL:
2119 * Make transfers attempt to use SSL/TLS.
2121 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2124 case CURLOPT_SSL_OPTIONS:
2125 arg = va_arg(param, long);
2126 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2130 case CURLOPT_FTPSSLAUTH:
2132 * Set a specific auth for FTP-SSL transfers.
2134 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2137 case CURLOPT_IPRESOLVE:
2138 data->set.ipver = va_arg(param, long);
2141 case CURLOPT_MAXFILESIZE_LARGE:
2143 * Set the maximum size of a file to download.
2145 data->set.max_filesize = va_arg(param, curl_off_t);
2148 case CURLOPT_TCP_NODELAY:
2150 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2153 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2156 case CURLOPT_FTP_ACCOUNT:
2157 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2158 va_arg(param, char *));
2161 case CURLOPT_IGNORE_CONTENT_LENGTH:
2162 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2165 case CURLOPT_CONNECT_ONLY:
2167 * No data transfer, set up connection and let application use the socket
2169 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2172 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2173 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2174 va_arg(param, char *));
2177 case CURLOPT_SOCKOPTFUNCTION:
2179 * socket callback function: called after socket() but before connect()
2181 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2184 case CURLOPT_SOCKOPTDATA:
2186 * socket callback data pointer. Might be NULL.
2188 data->set.sockopt_client = va_arg(param, void *);
2191 case CURLOPT_OPENSOCKETFUNCTION:
2193 * open/create socket callback function: called instead of socket(),
2196 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2199 case CURLOPT_OPENSOCKETDATA:
2201 * socket callback data pointer. Might be NULL.
2203 data->set.opensocket_client = va_arg(param, void *);
2206 case CURLOPT_CLOSESOCKETFUNCTION:
2208 * close socket callback function: called instead of close()
2209 * when shutting down a connection
2211 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2214 case CURLOPT_CLOSESOCKETDATA:
2216 * socket callback data pointer. Might be NULL.
2218 data->set.closesocket_client = va_arg(param, void *);
2221 case CURLOPT_SSL_SESSIONID_CACHE:
2222 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2226 /* we only include SSH options if explicitly built to support SSH */
2227 case CURLOPT_SSH_AUTH_TYPES:
2228 data->set.ssh_auth_types = va_arg(param, long);
2231 case CURLOPT_SSH_PUBLIC_KEYFILE:
2233 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2235 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2236 va_arg(param, char *));
2239 case CURLOPT_SSH_PRIVATE_KEYFILE:
2241 * Use this file instead of the $HOME/.ssh/id_dsa file
2243 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2244 va_arg(param, char *));
2246 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2248 * Option to allow for the MD5 of the host public key to be checked
2249 * for validation purposes.
2251 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2252 va_arg(param, char *));
2254 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2255 case CURLOPT_SSH_KNOWNHOSTS:
2257 * Store the file name to read known hosts from.
2259 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2260 va_arg(param, char *));
2263 case CURLOPT_SSH_KEYFUNCTION:
2264 /* setting to NULL is fine since the ssh.c functions themselves will
2265 then rever to use the internal default */
2266 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2269 case CURLOPT_SSH_KEYDATA:
2271 * Custom client data to pass to the SSH keyfunc callback
2273 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2275 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2277 #endif /* USE_LIBSSH2 */
2279 case CURLOPT_HTTP_TRANSFER_DECODING:
2281 * disable libcurl transfer encoding is used
2283 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2286 case CURLOPT_HTTP_CONTENT_DECODING:
2288 * raw data passed to the application when content encoding is used
2290 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2293 case CURLOPT_NEW_FILE_PERMS:
2295 * Uses these permissions instead of 0644
2297 data->set.new_file_perms = va_arg(param, long);
2300 case CURLOPT_NEW_DIRECTORY_PERMS:
2302 * Uses these permissions instead of 0755
2304 data->set.new_directory_perms = va_arg(param, long);
2307 case CURLOPT_ADDRESS_SCOPE:
2309 * We always get longs when passed plain numericals, but for this value we
2310 * know that an unsigned int will always hold the value so we blindly
2311 * typecast to this type
2313 data->set.scope = curlx_sltoui(va_arg(param, long));
2316 case CURLOPT_PROTOCOLS:
2317 /* set the bitmask for the protocols that are allowed to be used for the
2318 transfer, which thus helps the app which takes URLs from users or other
2319 external inputs and want to restrict what protocol(s) to deal
2320 with. Defaults to CURLPROTO_ALL. */
2321 data->set.allowed_protocols = va_arg(param, long);
2324 case CURLOPT_REDIR_PROTOCOLS:
2325 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2326 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2327 to be set in both bitmasks to be allowed to get redirected to. Defaults
2328 to all protocols except FILE and SCP. */
2329 data->set.redir_protocols = va_arg(param, long);
2332 case CURLOPT_MAIL_FROM:
2333 /* Set the SMTP mail originator */
2334 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2335 va_arg(param, char *));
2338 case CURLOPT_MAIL_AUTH:
2339 /* Set the SMTP auth originator */
2340 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2341 va_arg(param, char *));
2344 case CURLOPT_MAIL_RCPT:
2345 /* Set the list of mail recipients */
2346 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2349 case CURLOPT_SASL_IR:
2350 /* Enable/disable SASL initial response */
2351 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2354 case CURLOPT_RTSP_REQUEST:
2357 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2358 * Would this be better if the RTSPREQ_* were just moved into here?
2360 long curl_rtspreq = va_arg(param, long);
2361 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2362 switch(curl_rtspreq) {
2363 case CURL_RTSPREQ_OPTIONS:
2364 rtspreq = RTSPREQ_OPTIONS;
2367 case CURL_RTSPREQ_DESCRIBE:
2368 rtspreq = RTSPREQ_DESCRIBE;
2371 case CURL_RTSPREQ_ANNOUNCE:
2372 rtspreq = RTSPREQ_ANNOUNCE;
2375 case CURL_RTSPREQ_SETUP:
2376 rtspreq = RTSPREQ_SETUP;
2379 case CURL_RTSPREQ_PLAY:
2380 rtspreq = RTSPREQ_PLAY;
2383 case CURL_RTSPREQ_PAUSE:
2384 rtspreq = RTSPREQ_PAUSE;
2387 case CURL_RTSPREQ_TEARDOWN:
2388 rtspreq = RTSPREQ_TEARDOWN;
2391 case CURL_RTSPREQ_GET_PARAMETER:
2392 rtspreq = RTSPREQ_GET_PARAMETER;
2395 case CURL_RTSPREQ_SET_PARAMETER:
2396 rtspreq = RTSPREQ_SET_PARAMETER;
2399 case CURL_RTSPREQ_RECORD:
2400 rtspreq = RTSPREQ_RECORD;
2403 case CURL_RTSPREQ_RECEIVE:
2404 rtspreq = RTSPREQ_RECEIVE;
2407 rtspreq = RTSPREQ_NONE;
2410 data->set.rtspreq = rtspreq;
2415 case CURLOPT_RTSP_SESSION_ID:
2417 * Set the RTSP Session ID manually. Useful if the application is
2418 * resuming a previously established RTSP session
2420 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2421 va_arg(param, char *));
2424 case CURLOPT_RTSP_STREAM_URI:
2426 * Set the Stream URI for the RTSP request. Unless the request is
2427 * for generic server options, the application will need to set this.
2429 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2430 va_arg(param, char *));
2433 case CURLOPT_RTSP_TRANSPORT:
2435 * The content of the Transport: header for the RTSP request
2437 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2438 va_arg(param, char *));
2441 case CURLOPT_RTSP_CLIENT_CSEQ:
2443 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2444 * application is resuming a previously broken connection. The CSEQ
2445 * will increment from this new number henceforth.
2447 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2450 case CURLOPT_RTSP_SERVER_CSEQ:
2451 /* Same as the above, but for server-initiated requests */
2452 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2455 case CURLOPT_INTERLEAVEDATA:
2456 data->set.rtp_out = va_arg(param, void *);
2458 case CURLOPT_INTERLEAVEFUNCTION:
2459 /* Set the user defined RTP write function */
2460 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2463 case CURLOPT_WILDCARDMATCH:
2464 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2466 case CURLOPT_CHUNK_BGN_FUNCTION:
2467 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2469 case CURLOPT_CHUNK_END_FUNCTION:
2470 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2472 case CURLOPT_FNMATCH_FUNCTION:
2473 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2475 case CURLOPT_CHUNK_DATA:
2476 data->wildcard.customptr = va_arg(param, void *);
2478 case CURLOPT_FNMATCH_DATA:
2479 data->set.fnmatch_data = va_arg(param, void *);
2482 case CURLOPT_TLSAUTH_USERNAME:
2483 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2484 va_arg(param, char *));
2485 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2486 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2488 case CURLOPT_TLSAUTH_PASSWORD:
2489 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2490 va_arg(param, char *));
2491 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2492 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2494 case CURLOPT_TLSAUTH_TYPE:
2495 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2496 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2498 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2501 case CURLOPT_DNS_SERVERS:
2502 result = Curl_set_dns_servers(data, va_arg(param, char *));
2504 case CURLOPT_DNS_INTERFACE:
2505 result = Curl_set_dns_interface(data, va_arg(param, char *));
2507 case CURLOPT_DNS_LOCAL_IP4:
2508 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2510 case CURLOPT_DNS_LOCAL_IP6:
2511 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2514 case CURLOPT_TCP_KEEPALIVE:
2515 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2517 case CURLOPT_TCP_KEEPIDLE:
2518 data->set.tcp_keepidle = va_arg(param, long);
2520 case CURLOPT_TCP_KEEPINTVL:
2521 data->set.tcp_keepintvl = va_arg(param, long);
2523 case CURLOPT_SSL_ENABLE_NPN:
2524 data->set.ssl_enable_npn = (0 != va_arg(param, long))?TRUE:FALSE;
2526 case CURLOPT_SSL_ENABLE_ALPN:
2527 data->set.ssl_enable_alpn = (0 != va_arg(param, long))?TRUE:FALSE;
2531 /* unknown tag and its companion, just ignore: */
2532 result = CURLE_UNKNOWN_OPTION;
2539 static void conn_free(struct connectdata *conn)
2544 /* possible left-overs from the async name resolvers */
2545 Curl_resolver_cancel(conn);
2547 /* close the SSL stuff before we close any sockets since they will/may
2548 write to the sockets */
2549 Curl_ssl_close(conn, FIRSTSOCKET);
2550 Curl_ssl_close(conn, SECONDARYSOCKET);
2552 /* close possibly still open sockets */
2553 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2554 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2555 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2556 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2557 if(CURL_SOCKET_BAD != conn->tempsock[0])
2558 Curl_closesocket(conn, conn->tempsock[0]);
2559 if(CURL_SOCKET_BAD != conn->tempsock[1])
2560 Curl_closesocket(conn, conn->tempsock[1]);
2562 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2563 Curl_ntlm_wb_cleanup(conn);
2566 Curl_safefree(conn->user);
2567 Curl_safefree(conn->passwd);
2568 Curl_safefree(conn->xoauth2_bearer);
2569 Curl_safefree(conn->options);
2570 Curl_safefree(conn->proxyuser);
2571 Curl_safefree(conn->proxypasswd);
2572 Curl_safefree(conn->allocptr.proxyuserpwd);
2573 Curl_safefree(conn->allocptr.uagent);
2574 Curl_safefree(conn->allocptr.userpwd);
2575 Curl_safefree(conn->allocptr.accept_encoding);
2576 Curl_safefree(conn->allocptr.te);
2577 Curl_safefree(conn->allocptr.rangeline);
2578 Curl_safefree(conn->allocptr.ref);
2579 Curl_safefree(conn->allocptr.host);
2580 Curl_safefree(conn->allocptr.cookiehost);
2581 Curl_safefree(conn->allocptr.rtsp_transport);
2582 Curl_safefree(conn->trailer);
2583 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2584 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2585 Curl_safefree(conn->master_buffer);
2587 Curl_llist_destroy(conn->send_pipe, NULL);
2588 Curl_llist_destroy(conn->recv_pipe, NULL);
2590 conn->send_pipe = NULL;
2591 conn->recv_pipe = NULL;
2593 Curl_safefree(conn->localdev);
2594 Curl_free_ssl_config(&conn->ssl_config);
2596 free(conn); /* free all the connection oriented data */
2599 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2601 struct SessionHandle *data;
2603 return CURLE_OK; /* this is closed and fine already */
2607 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2611 if(conn->dns_entry != NULL) {
2612 Curl_resolv_unlock(data, conn->dns_entry);
2613 conn->dns_entry = NULL;
2616 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2619 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2620 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2622 /* Authentication data is a mix of connection-related and sessionhandle-
2623 related stuff. NTLM is connection-related so when we close the shop
2627 data->state.authhost.done = FALSE;
2628 data->state.authhost.picked =
2629 data->state.authhost.want;
2632 if(has_proxy_ntlm) {
2633 data->state.authproxy.done = FALSE;
2634 data->state.authproxy.picked =
2635 data->state.authproxy.want;
2638 if(has_host_ntlm || has_proxy_ntlm)
2639 data->state.authproblem = FALSE;
2642 /* Cleanup NTLM connection-related data */
2643 Curl_http_ntlm_cleanup(conn);
2645 /* Cleanup possible redirect junk */
2646 if(data->req.newurl) {
2647 free(data->req.newurl);
2648 data->req.newurl = NULL;
2651 if(conn->handler->disconnect)
2652 /* This is set if protocol-specific cleanups should be made */
2653 conn->handler->disconnect(conn, dead_connection);
2655 /* unlink ourselves! */
2656 infof(data, "Closing connection %ld\n", conn->connection_id);
2657 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2659 #if defined(USE_LIBIDN)
2660 if(conn->host.encalloc)
2661 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2662 with idn_free() since this was allocated
2664 if(conn->proxy.encalloc)
2665 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2666 freed with idn_free() since this was
2667 allocated by libidn */
2668 #elif defined(USE_WIN32_IDN)
2669 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2670 idn_free() since this was allocated by
2671 curl_win32_idn_to_ascii */
2672 if(conn->proxy.encalloc)
2673 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2674 with idn_free() since this was allocated by
2675 curl_win32_idn_to_ascii */
2678 Curl_ssl_close(conn, FIRSTSOCKET);
2680 /* Indicate to all handles on the pipe that we're dead */
2681 if(Curl_multi_pipeline_enabled(data->multi)) {
2682 signalPipeClose(conn->send_pipe, TRUE);
2683 signalPipeClose(conn->recv_pipe, TRUE);
2688 Curl_speedinit(data);
2694 * This function should return TRUE if the socket is to be assumed to
2695 * be dead. Most commonly this happens when the server has closed the
2696 * connection due to inactivity.
2698 static bool SocketIsDead(curl_socket_t sock)
2701 bool ret_val = TRUE;
2703 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2711 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2712 const struct connectdata *conn)
2714 if((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
2715 Curl_multi_pipeline_enabled(handle->multi) &&
2716 (handle->set.httpreq == HTTPREQ_GET ||
2717 handle->set.httpreq == HTTPREQ_HEAD) &&
2718 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2724 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2726 return Curl_multi_pipeline_enabled(handle->multi);
2729 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2730 struct curl_llist *pipeline)
2732 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2733 return CURLE_OUT_OF_MEMORY;
2737 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2738 struct curl_llist *pipeline)
2740 struct curl_llist_element *curr;
2742 curr = pipeline->head;
2744 if(curr->ptr == handle) {
2745 Curl_llist_remove(pipeline, curr, NULL);
2746 return 1; /* we removed a handle */
2754 #if 0 /* this code is saved here as it is useful for debugging purposes */
2755 static void Curl_printPipeline(struct curl_llist *pipeline)
2757 struct curl_llist_element *curr;
2759 curr = pipeline->head;
2761 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2762 infof(data, "Handle in pipeline: %s\n", data->state.path);
2768 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2770 struct curl_llist_element *curr = pipeline->head;
2772 return (struct SessionHandle *) curr->ptr;
2778 /* remove the specified connection from all (possible) pipelines and related
2780 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2781 struct connectdata *conn)
2783 bool recv_head = (conn->readchannel_inuse &&
2784 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2786 bool send_head = (conn->writechannel_inuse &&
2787 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2789 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2790 conn->readchannel_inuse = FALSE;
2791 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2792 conn->writechannel_inuse = FALSE;
2795 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2797 struct curl_llist_element *curr;
2802 curr = pipeline->head;
2804 struct curl_llist_element *next = curr->next;
2805 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2807 #ifdef DEBUGBUILD /* debug-only code */
2808 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2810 infof(data, "signalPipeClose() found BAAD easy handle\n");
2815 data->state.pipe_broke = TRUE;
2816 Curl_multi_handlePipeBreak(data);
2817 Curl_llist_remove(pipeline, curr, NULL);
2823 * This function finds the connection in the connection
2824 * cache that has been unused for the longest time.
2826 * Returns the pointer to the oldest idle connection, or NULL if none was
2829 static struct connectdata *
2830 find_oldest_idle_connection(struct SessionHandle *data)
2832 struct conncache *bc = data->state.conn_cache;
2833 struct curl_hash_iterator iter;
2834 struct curl_llist_element *curr;
2835 struct curl_hash_element *he;
2839 struct connectdata *conn_candidate = NULL;
2840 struct connectbundle *bundle;
2844 Curl_hash_start_iterate(bc->hash, &iter);
2846 he = Curl_hash_next_element(&iter);
2848 struct connectdata *conn;
2852 curr = bundle->conn_list->head;
2857 /* Set higher score for the age passed since the connection was used */
2858 score = Curl_tvdiff(now, conn->now);
2860 if(score > highscore) {
2862 conn_candidate = conn;
2868 he = Curl_hash_next_element(&iter);
2871 return conn_candidate;
2875 * This function finds the connection in the connection
2876 * bundle that has been unused for the longest time.
2878 * Returns the pointer to the oldest idle connection, or NULL if none was
2881 static struct connectdata *
2882 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2883 struct connectbundle *bundle)
2885 struct curl_llist_element *curr;
2889 struct connectdata *conn_candidate = NULL;
2890 struct connectdata *conn;
2896 curr = bundle->conn_list->head;
2901 /* Set higher score for the age passed since the connection was used */
2902 score = Curl_tvdiff(now, conn->now);
2904 if(score > highscore) {
2906 conn_candidate = conn;
2912 return conn_candidate;
2916 * Given one filled in connection struct (named needle), this function should
2917 * detect if there already is one that has all the significant details
2918 * exactly the same and thus should be used instead.
2920 * If there is a match, this function returns TRUE - and has marked the
2921 * connection as 'in-use'. It must later be called with ConnectionDone() to
2922 * return back to 'idle' (unused) state.
2924 * The force_reuse flag is set if the connection must be used, even if
2925 * the pipelining strategy wants to open a new connection instead of reusing.
2928 ConnectionExists(struct SessionHandle *data,
2929 struct connectdata *needle,
2930 struct connectdata **usethis,
2933 struct connectdata *check;
2934 struct connectdata *chosen = 0;
2935 bool canPipeline = IsPipeliningPossible(data, needle);
2936 bool wantNTLMhttp = ((data->state.authhost.want & CURLAUTH_NTLM) ||
2937 (data->state.authhost.want & CURLAUTH_NTLM_WB)) &&
2938 (needle->handler->protocol & PROTO_FAMILY_HTTP) ? TRUE : FALSE;
2939 struct connectbundle *bundle;
2941 *force_reuse = FALSE;
2943 /* We can't pipe if the site is blacklisted */
2944 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2945 canPipeline = FALSE;
2948 /* Look up the bundle with all the connections to this
2950 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2953 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2954 size_t best_pipe_len = max_pipe_len;
2955 struct curl_llist_element *curr;
2957 infof(data, "Found bundle for host %s: %p\n",
2958 needle->host.name, (void *)bundle);
2960 /* We can't pipe if we don't know anything about the server */
2961 if(canPipeline && !bundle->server_supports_pipelining) {
2962 infof(data, "Server doesn't support pipelining\n");
2963 canPipeline = FALSE;
2966 curr = bundle->conn_list->head;
2969 bool credentialsMatch = FALSE;
2973 * Note that if we use a HTTP proxy, we check connections to that
2974 * proxy and not to the actual remote server.
2979 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2981 if(!pipeLen && !check->inuse) {
2982 /* The check for a dead socket makes sense only if there are no
2983 handles in pipeline and the connection isn't already marked in
2986 if(check->handler->protocol & CURLPROTO_RTSP)
2987 /* RTSP is a special case due to RTP interleaving */
2988 dead = Curl_rtsp_connisdead(check);
2990 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2994 infof(data, "Connection %ld seems to be dead!\n",
2995 check->connection_id);
2997 /* disconnect resources */
2998 Curl_disconnect(check, /* dead_connection */ TRUE);
3004 /* Make sure the pipe has only GET requests */
3005 struct SessionHandle* sh = gethandleathead(check->send_pipe);
3006 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
3008 if(!IsPipeliningPossible(sh, check))
3012 if(!IsPipeliningPossible(rh, check))
3018 /* can only happen within multi handles, and means that another easy
3019 handle is using this connection */
3023 if(Curl_resolver_asynch()) {
3024 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
3025 completed yet and until then we don't re-use this connection */
3026 if(!check->ip_addr_str[0]) {
3028 "Connection #%ld is still name resolving, can't reuse\n",
3029 check->connection_id);
3034 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
3035 check->bits.close) {
3036 /* Don't pick a connection that hasn't connected yet or that is going
3038 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
3039 check->connection_id);
3041 if(check->recv_pipe->size > 0) {
3043 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3044 check->connection_id);
3051 if((needle->handler->flags&PROTOPT_SSL) !=
3052 (check->handler->flags&PROTOPT_SSL))
3053 /* don't do mixed SSL and non-SSL connections */
3054 if(!(needle->handler->protocol & check->handler->protocol))
3055 /* except protocols that have been upgraded via TLS */
3058 if(needle->handler->flags&PROTOPT_SSL) {
3059 if((data->set.ssl.verifypeer != check->verifypeer) ||
3060 (data->set.ssl.verifyhost != check->verifyhost))
3064 if(needle->bits.proxy != check->bits.proxy)
3065 /* don't do mixed proxy and non-proxy connections */
3068 if(!canPipeline && check->inuse)
3069 /* this request can't be pipelined but the checked connection is
3070 already in use so we skip it */
3073 if(needle->localdev || needle->localport) {
3074 /* If we are bound to a specific local end (IP+port), we must not
3075 re-use a random other one, although if we didn't ask for a
3076 particular one we can reuse one that was bound.
3078 This comparison is a bit rough and too strict. Since the input
3079 parameters can be specified in numerous ways and still end up the
3080 same it would take a lot of processing to make it really accurate.
3081 Instead, this matching will assume that re-uses of bound connections
3082 will most likely also re-use the exact same binding parameters and
3083 missing out a few edge cases shouldn't hurt anyone very much.
3085 if((check->localport != needle->localport) ||
3086 (check->localportrange != needle->localportrange) ||
3088 !needle->localdev ||
3089 strcmp(check->localdev, needle->localdev))
3093 if((!(needle->handler->flags & PROTOPT_CREDSPERREQUEST)) ||
3095 /* This protocol requires credentials per connection or is HTTP+NTLM,
3096 so verify that we're using the same name and password as well */
3097 if(!strequal(needle->user, check->user) ||
3098 !strequal(needle->passwd, check->passwd)) {
3099 /* one of them was different */
3102 credentialsMatch = TRUE;
3105 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3106 (needle->bits.httpproxy && check->bits.httpproxy &&
3107 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3108 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3109 (needle->port == check->port))) {
3110 /* The requested connection does not use a HTTP proxy or it uses SSL or
3111 it is a non-SSL protocol tunneled over the same http proxy name and
3112 port number or it is a non-SSL protocol which is allowed to be
3115 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3116 needle->handler->protocol & check->handler->protocol) &&
3117 Curl_raw_equal(needle->host.name, check->host.name) &&
3118 needle->remote_port == check->remote_port) {
3119 if(needle->handler->flags & PROTOPT_SSL) {
3120 /* This is a SSL connection so verify that we're using the same
3121 SSL options as well */
3122 if(!Curl_ssl_config_matches(&needle->ssl_config,
3123 &check->ssl_config)) {
3125 "Connection #%ld has different SSL parameters, "
3127 check->connection_id));
3130 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3132 "Connection #%ld has not started SSL connect, "
3134 check->connection_id));
3141 else { /* The requested needle connection is using a proxy,
3142 is the checked one using the same host, port and type? */
3143 if(check->bits.proxy &&
3144 (needle->proxytype == check->proxytype) &&
3145 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3146 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3147 needle->port == check->port) {
3148 /* This is the same proxy connection, use it! */
3154 /* If we are looking for an HTTP+NTLM connection, check if this is
3155 already authenticating with the right credentials. If not, keep
3156 looking so that we can reuse NTLM connections if
3157 possible. (Especially we must not reuse the same connection if
3158 partway through a handshake!) */
3160 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3163 /* We must use this connection, no other */
3164 *force_reuse = TRUE;
3167 else if(credentialsMatch)
3168 /* this is a backup choice */
3174 /* We can pipeline if we want to. Let's continue looking for
3175 the optimal connection to use, i.e the shortest pipe that is not
3179 /* We have the optimal connection. Let's stop looking. */
3184 /* We can't use the connection if the pipe is full */
3185 if(pipeLen >= max_pipe_len)
3188 /* We can't use the connection if the pipe is penalized */
3189 if(Curl_pipeline_penalized(data, check))
3192 if(pipeLen < best_pipe_len) {
3193 /* This connection has a shorter pipe so far. We'll pick this
3194 and continue searching */
3196 best_pipe_len = pipeLen;
3201 /* We have found a connection. Let's stop searching. */
3211 return TRUE; /* yes, we found one to use! */
3214 return FALSE; /* no matching connecting exists */
3217 /* Mark the connection as 'idle', or close it if the cache is full.
3218 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3220 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3222 /* data->multi->maxconnects can be negative, deal with it. */
3223 size_t maxconnects =
3224 (data->multi->maxconnects < 0) ? data->multi->num_easy * 4:
3225 data->multi->maxconnects;
3226 struct connectdata *conn_candidate = NULL;
3228 /* Mark the current connection as 'unused' */
3229 conn->inuse = FALSE;
3231 if(maxconnects > 0 &&
3232 data->state.conn_cache->num_connections > maxconnects) {
3233 infof(data, "Connection cache is full, closing the oldest one.\n");
3235 conn_candidate = find_oldest_idle_connection(data);
3237 if(conn_candidate) {
3238 /* Set the connection's owner correctly */
3239 conn_candidate->data = data;
3241 /* the winner gets the honour of being disconnected */
3242 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3246 return (conn_candidate == conn) ? FALSE : TRUE;
3250 * The given input connection struct pointer is to be stored in the connection
3251 * cache. If the cache is already full, least interesting existing connection
3252 * (if any) gets closed.
3254 * The given connection should be unique. That must've been checked prior to
3257 static CURLcode ConnectionStore(struct SessionHandle *data,
3258 struct connectdata *conn)
3260 return Curl_conncache_add_conn(data->state.conn_cache, conn);
3263 /* after a TCP connection to the proxy has been verified, this function does
3264 the next magic step.
3266 Note: this function's sub-functions call failf()
3269 CURLcode Curl_connected_proxy(struct connectdata *conn,
3272 if(!conn->bits.proxy || sockindex)
3273 /* this magic only works for the primary socket as the secondary is used
3274 for FTP only and it has FTP specific magic in ftp.c */
3277 switch(conn->proxytype) {
3278 #ifndef CURL_DISABLE_PROXY
3279 case CURLPROXY_SOCKS5:
3280 case CURLPROXY_SOCKS5_HOSTNAME:
3281 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3282 conn->host.name, conn->remote_port,
3285 case CURLPROXY_SOCKS4:
3286 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3287 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3289 case CURLPROXY_SOCKS4A:
3290 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3291 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3293 #endif /* CURL_DISABLE_PROXY */
3294 case CURLPROXY_HTTP:
3295 case CURLPROXY_HTTP_1_0:
3296 /* do nothing here. handled later. */
3300 } /* switch proxytype */
3306 * verboseconnect() displays verbose information after a connect
3308 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3309 void Curl_verboseconnect(struct connectdata *conn)
3311 if(conn->data->set.verbose)
3312 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3313 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3314 conn->ip_addr_str, conn->port, conn->connection_id);
3318 int Curl_protocol_getsock(struct connectdata *conn,
3319 curl_socket_t *socks,
3322 if(conn->handler->proto_getsock)
3323 return conn->handler->proto_getsock(conn, socks, numsocks);
3324 return GETSOCK_BLANK;
3327 int Curl_doing_getsock(struct connectdata *conn,
3328 curl_socket_t *socks,
3331 if(conn && conn->handler->doing_getsock)
3332 return conn->handler->doing_getsock(conn, socks, numsocks);
3333 return GETSOCK_BLANK;
3337 * We are doing protocol-specific connecting and this is being called over and
3338 * over from the multi interface until the connection phase is done on
3342 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3345 CURLcode result=CURLE_OK;
3347 if(conn && conn->handler->connecting) {
3349 result = conn->handler->connecting(conn, done);
3358 * We are DOING this is being called over and over from the multi interface
3359 * until the DOING phase is done on protocol layer.
3362 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3364 CURLcode result=CURLE_OK;
3366 if(conn && conn->handler->doing) {
3368 result = conn->handler->doing(conn, done);
3377 * We have discovered that the TCP connection has been successful, we can now
3378 * proceed with some action.
3381 CURLcode Curl_protocol_connect(struct connectdata *conn,
3382 bool *protocol_done)
3384 CURLcode result=CURLE_OK;
3386 *protocol_done = FALSE;
3388 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3389 /* We already are connected, get back. This may happen when the connect
3390 worked fine in the first call, like when we connect to a local server
3391 or proxy. Note that we don't know if the protocol is actually done.
3393 Unless this protocol doesn't have any protocol-connect callback, as
3394 then we know we're done. */
3395 if(!conn->handler->connecting)
3396 *protocol_done = TRUE;
3401 if(!conn->bits.protoconnstart) {
3403 result = Curl_proxy_connect(conn);
3407 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3408 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3409 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3410 before proceeding further. Return CURLE_OK so we'll be called again */
3413 if(conn->handler->connect_it) {
3414 /* is there a protocol-specific connect() procedure? */
3416 /* Call the protocol-specific connect function */
3417 result = conn->handler->connect_it(conn, protocol_done);
3420 *protocol_done = TRUE;
3422 /* it has started, possibly even completed but that knowledge isn't stored
3425 conn->bits.protoconnstart = TRUE;
3428 return result; /* pass back status */
3432 * Helpers for IDNA convertions.
3434 static bool is_ASCII_name(const char *hostname)
3436 const unsigned char *ch = (const unsigned char*)hostname;
3447 * Check if characters in hostname is allowed in Top Level Domain.
3449 static bool tld_check_name(struct SessionHandle *data,
3450 const char *ace_hostname)
3453 char *uc_name = NULL;
3455 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3456 const char *tld_errmsg = "<no msg>";
3461 /* Convert (and downcase) ACE-name back into locale's character set */
3462 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3463 if(rc != IDNA_SUCCESS)
3466 rc = tld_check_lz(uc_name, &err_pos, NULL);
3467 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3468 #ifdef HAVE_TLD_STRERROR
3469 if(rc != TLD_SUCCESS)
3470 tld_errmsg = tld_strerror((Tld_rc)rc);
3472 if(rc == TLD_INVALID)
3473 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3474 tld_errmsg, err_pos, uc_name[err_pos],
3475 uc_name[err_pos] & 255);
3476 else if(rc != TLD_SUCCESS)
3477 infof(data, "WARNING: TLD check for %s failed; %s\n",
3478 uc_name, tld_errmsg);
3479 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3482 if(rc != TLD_SUCCESS)
3490 * Perform any necessary IDN conversion of hostname
3492 static void fix_hostname(struct SessionHandle *data,
3493 struct connectdata *conn, struct hostname *host)
3500 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3504 /* set the name we use to display the host name */
3505 host->dispname = host->name;
3507 len = strlen(host->name);
3508 if(host->name[len-1] == '.')
3509 /* strip off a single trailing dot if present, primarily for SNI but
3510 there's no use for it */
3511 host->name[len-1]=0;
3513 if(!is_ASCII_name(host->name)) {
3515 /*************************************************************
3516 * Check name for non-ASCII and convert hostname to ACE form.
3517 *************************************************************/
3518 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3519 char *ace_hostname = NULL;
3520 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3521 infof (data, "Input domain encoded as `%s'\n",
3522 stringprep_locale_charset ());
3523 if(rc != IDNA_SUCCESS)
3524 infof(data, "Failed to convert %s to ACE; %s\n",
3525 host->name, Curl_idn_strerror(conn,rc));
3527 /* tld_check_name() displays a warning if the host name contains
3528 "illegal" characters for this TLD */
3529 (void)tld_check_name(data, ace_hostname);
3531 host->encalloc = ace_hostname;
3532 /* change the name pointer to point to the encoded hostname */
3533 host->name = host->encalloc;
3536 #elif defined(USE_WIN32_IDN)
3537 /*************************************************************
3538 * Check name for non-ASCII and convert hostname to ACE form.
3539 *************************************************************/
3540 char *ace_hostname = NULL;
3541 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3543 infof(data, "Failed to convert %s to ACE;\n",
3546 host->encalloc = ace_hostname;
3547 /* change the name pointer to point to the encoded hostname */
3548 host->name = host->encalloc;
3551 infof(data, "IDN support not present, can't parse Unicode domains\n");
3556 static void llist_dtor(void *user, void *element)
3564 * Allocate and initialize a new connectdata object.
3566 static struct connectdata *allocate_conn(struct SessionHandle *data)
3568 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3572 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3573 already from start to avoid NULL
3574 situations and checks */
3576 /* and we setup a few fields in case we end up actually using this struct */
3578 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3579 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3580 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3581 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3582 conn->connection_id = -1; /* no ID */
3583 conn->port = -1; /* unknown at this point */
3584 conn->remote_port = -1; /* unknown */
3586 /* Default protocol-independent behavior doesn't support persistent
3587 connections, so we set this to force-close. Protocols that support
3588 this need to set this to FALSE in their "curl_do" functions. */
3589 connclose(conn, "Default to force-close");
3591 /* Store creation time to help future close decision making */
3592 conn->created = Curl_tvnow();
3594 conn->data = data; /* Setup the association between this connection
3595 and the SessionHandle */
3597 conn->proxytype = data->set.proxytype; /* type */
3599 #ifdef CURL_DISABLE_PROXY
3601 conn->bits.proxy = FALSE;
3602 conn->bits.httpproxy = FALSE;
3603 conn->bits.proxy_user_passwd = FALSE;
3604 conn->bits.tunnel_proxy = FALSE;
3606 #else /* CURL_DISABLE_PROXY */
3608 /* note that these two proxy bits are now just on what looks to be
3609 requested, they may be altered down the road */
3610 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3611 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3612 conn->bits.httpproxy = (conn->bits.proxy &&
3613 (conn->proxytype == CURLPROXY_HTTP ||
3614 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3615 conn->bits.proxy_user_passwd =
3616 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3617 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3619 #endif /* CURL_DISABLE_PROXY */
3621 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3622 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3623 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3625 conn->verifypeer = data->set.ssl.verifypeer;
3626 conn->verifyhost = data->set.ssl.verifyhost;
3628 conn->ip_version = data->set.ipver;
3630 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3631 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3632 conn->ntlm_auth_hlpr_pid = 0;
3633 conn->challenge_header = NULL;
3634 conn->response_header = NULL;
3637 if(Curl_multi_pipeline_enabled(data->multi) &&
3638 !conn->master_buffer) {
3639 /* Allocate master_buffer to be used for pipelining */
3640 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3641 if(!conn->master_buffer)
3645 /* Initialize the pipeline lists */
3646 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3647 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3648 if(!conn->send_pipe || !conn->recv_pipe)
3652 conn->data_prot = PROT_CLEAR;
3655 /* Store the local bind parameters that will be used for this connection */
3656 if(data->set.str[STRING_DEVICE]) {
3657 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3661 conn->localportrange = data->set.localportrange;
3662 conn->localport = data->set.localport;
3664 /* the close socket stuff needs to be copied to the connection struct as
3665 it may live on without (this specific) SessionHandle */
3666 conn->fclosesocket = data->set.fclosesocket;
3667 conn->closesocket_client = data->set.closesocket_client;
3672 Curl_llist_destroy(conn->send_pipe, NULL);
3673 Curl_llist_destroy(conn->recv_pipe, NULL);
3675 conn->send_pipe = NULL;
3676 conn->recv_pipe = NULL;
3678 Curl_safefree(conn->master_buffer);
3679 Curl_safefree(conn->localdev);
3680 Curl_safefree(conn);
3684 static CURLcode findprotocol(struct SessionHandle *data,
3685 struct connectdata *conn,
3686 const char *protostr)
3688 const struct Curl_handler * const *pp;
3689 const struct Curl_handler *p;
3691 /* Scan protocol handler table and match against 'protostr' to set a few
3692 variables based on the URL. Now that the handler may be changed later
3693 when the protocol specific setup function is called. */
3694 for(pp = protocols; (p = *pp) != NULL; pp++) {
3695 if(Curl_raw_equal(p->scheme, protostr)) {
3696 /* Protocol found in table. Check if allowed */
3697 if(!(data->set.allowed_protocols & p->protocol))
3701 /* it is allowed for "normal" request, now do an extra check if this is
3702 the result of a redirect */
3703 if(data->state.this_is_a_follow &&
3704 !(data->set.redir_protocols & p->protocol))
3708 /* Perform setup complement if some. */
3709 conn->handler = conn->given = p;
3711 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3717 /* The protocol was not found in the table, but we don't have to assign it
3718 to anything since it is already assigned to a dummy-struct in the
3719 create_conn() function when the connectdata struct is allocated. */
3720 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3723 return CURLE_UNSUPPORTED_PROTOCOL;
3727 * Parse URL and fill in the relevant members of the connection struct.
3729 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3730 struct connectdata *conn,
3732 char **userp, char **passwdp,
3737 char *path = data->state.path;
3740 char protobuf[16] = "";
3741 const char *protop = "";
3743 bool rebuild_url = FALSE;
3745 *prot_missing = FALSE;
3747 /*************************************************************
3750 * We need to parse the url even when using the proxy, because we will need
3751 * the hostname and port in case we are trying to SSL connect through the
3752 * proxy -- and we don't know if we will need to use SSL until we parse the
3754 ************************************************************/
3755 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3757 Curl_raw_equal(protobuf, "file")) {
3758 if(path[0] == '/' && path[1] == '/') {
3759 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3760 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3761 * file://localhost/<path> is similar to how other schemes treat missing
3762 * hostnames. See RFC 1808. */
3764 /* This cannot be done with strcpy() in a portable manner, since the
3765 memory areas overlap! */
3766 memmove(path, path + 2, strlen(path + 2)+1);
3769 * we deal with file://<host>/<path> differently since it supports no
3770 * hostname other than "localhost" and "127.0.0.1", which is unique among
3771 * the URL protocols specified in RFC 1738
3773 if(path[0] != '/') {
3774 /* the URL included a host name, we ignore host names in file:// URLs
3775 as the standards don't define what to do with them */
3776 char *ptr=strchr(path, '/');
3778 /* there was a slash present
3780 RFC1738 (section 3.1, page 5) says:
3782 The rest of the locator consists of data specific to the scheme,
3783 and is known as the "url-path". It supplies the details of how the
3784 specified resource can be accessed. Note that the "/" between the
3785 host (or port) and the url-path is NOT part of the url-path.
3787 As most agents use file://localhost/foo to get '/foo' although the
3788 slash preceding foo is a separator and not a slash for the path,
3789 a URL as file://localhost//foo must be valid as well, to refer to
3790 the same file with an absolute path.
3793 if(ptr[1] && ('/' == ptr[1]))
3794 /* if there was two slashes, we skip the first one as that is then
3795 used truly as a separator */
3798 /* This cannot be made with strcpy, as the memory chunks overlap! */
3799 memmove(path, ptr, strlen(ptr)+1);
3803 protop = "file"; /* protocol string */
3809 if(2 > sscanf(data->change.url,
3810 "%15[^\n:]://%[^\n/?]%[^\n]",
3812 conn->host.name, path)) {
3815 * The URL was badly formatted, let's try the browser-style _without_
3816 * protocol specified like 'http://'.
3818 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3821 * We couldn't even get this format.
3822 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3823 * assigned, but the return value is EOF!
3825 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3826 if(!(rc == -1 && *conn->host.name))
3829 failf(data, "<url> malformed");
3830 return CURLE_URL_MALFORMAT;
3835 * Since there was no protocol part specified, we guess what protocol it
3836 * is based on the first letters of the server name.
3839 /* Note: if you add a new protocol, please update the list in
3840 * lib/version.c too! */
3842 if(checkprefix("FTP.", conn->host.name))
3844 else if(checkprefix("DICT.", conn->host.name))
3846 else if(checkprefix("LDAP.", conn->host.name))
3848 else if(checkprefix("IMAP.", conn->host.name))
3850 else if(checkprefix("SMTP.", conn->host.name))
3852 else if(checkprefix("POP3.", conn->host.name))
3858 *prot_missing = TRUE; /* not given in URL */
3864 /* We search for '?' in the host name (but only on the right side of a
3865 * @-letter to allow ?-letters in username and password) to handle things
3866 * like http://example.com?param= (notice the missing '/').
3868 at = strchr(conn->host.name, '@');
3870 query = strchr(at+1, '?');
3872 query = strchr(conn->host.name, '?');
3875 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3876 a slash after the '?', that is where the path currently begins and the
3877 '?string' is still part of the host name.
3879 We must move the trailing part from the host name and put it first in
3880 the path. And have it all prefixed with a slash.
3883 size_t hostlen = strlen(query);
3884 size_t pathlen = strlen(path);
3886 /* move the existing path plus the zero byte forward, to make room for
3887 the host-name part */
3888 memmove(path+hostlen+1, path, pathlen+1);
3890 /* now copy the trailing host part in front of the existing path */
3891 memcpy(path+1, query, hostlen);
3893 path[0]='/'; /* prepend the missing slash */
3896 *query=0; /* now cut off the hostname at the ? */
3899 /* if there's no path set, use a single slash */
3904 /* If the URL is malformatted (missing a '/' after hostname before path) we
3905 * insert a slash here. The only letter except '/' we accept to start a path
3908 if(path[0] == '?') {
3909 /* We need this function to deal with overlapping memory areas. We know
3910 that the memory area 'path' points to is 'urllen' bytes big and that
3911 is bigger than the path. Use +1 to move the zero byte too. */
3912 memmove(&path[1], path, strlen(path)+1);
3917 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3918 char *newp = Curl_dedotdotify(path);
3920 return CURLE_OUT_OF_MEMORY;
3922 if(strcmp(newp, path)) {
3924 free(data->state.pathbuffer);
3925 data->state.pathbuffer = newp;
3926 data->state.path = newp;
3934 * "rebuild_url" means that one or more URL components have been modified so
3935 * we need to generate an updated full version. We need the corrected URL
3936 * when communicating over HTTP proxy and we don't know at this point if
3937 * we're using a proxy or not.
3942 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3944 size_t urllen = strlen(data->change.url); /* original URL length */
3946 size_t prefixlen = strlen(conn->host.name);
3949 prefixlen += strlen(protop) + strlen("://");
3951 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3953 return CURLE_OUT_OF_MEMORY;
3955 /* copy the prefix */
3956 memcpy(reurl, data->change.url, prefixlen);
3958 /* append the trailing piece + zerobyte */
3959 memcpy(&reurl[prefixlen], path, plen + 1);
3961 /* possible free the old one */
3962 if(data->change.url_alloc) {
3963 Curl_safefree(data->change.url);
3964 data->change.url_alloc = FALSE;
3967 infof(data, "Rebuilt URL to: %s\n", reurl);
3969 data->change.url = reurl;
3970 data->change.url_alloc = TRUE; /* free this later */
3974 * Parse the login details from the URL and strip them out of
3977 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3978 if(result != CURLE_OK)
3981 if(conn->host.name[0] == '[') {
3982 /* This looks like an IPv6 address literal. See if there is an address
3983 scope if there is no location header */
3984 char *percent = strchr(conn->host.name, '%');
3986 unsigned int identifier_offset = 3;
3988 unsigned long scope;
3989 if(strncmp("%25", percent, 3) != 0) {
3991 "Please URL encode %% as %%25, see RFC 6874.\n");
3992 identifier_offset = 1;
3994 scope = strtoul(percent + identifier_offset, &endp, 10);
3996 /* The address scope was well formed. Knock it out of the
3998 memmove(percent, endp, strlen(endp)+1);
3999 conn->scope = (unsigned int)scope;
4002 /* Zone identifier is not numeric */
4003 #if defined(HAVE_NET_IF_H) && defined(IFNAMSIZ) && defined(HAVE_IF_NAMETOINDEX)
4004 char ifname[IFNAMSIZ + 2];
4005 char *square_bracket;
4006 unsigned int scopeidx = 0;
4007 strncpy(ifname, percent + identifier_offset, IFNAMSIZ + 2);
4008 /* Ensure nullbyte termination */
4009 ifname[IFNAMSIZ + 1] = '\0';
4010 square_bracket = strchr(ifname, ']');
4011 if(square_bracket) {
4013 *square_bracket = '\0';
4014 scopeidx = if_nametoindex(ifname);
4016 infof(data, "Invalid network interface: %s; %s\n", ifname,
4021 /* Remove zone identifier from hostname */
4023 percent + identifier_offset + strlen(ifname),
4024 identifier_offset + strlen(ifname));
4025 conn->scope = scopeidx;
4028 #endif /* HAVE_NET_IF_H && IFNAMSIZ */
4029 infof(data, "Invalid IPv6 address format\n");
4035 /* Override any scope that was set above. */
4036 conn->scope = data->set.scope;
4038 /* Remove the fragment part of the path. Per RFC 2396, this is always the
4039 last part of the URI. We are looking for the first '#' so that we deal
4040 gracefully with non conformant URI such as http://example.com#foo#bar. */
4041 fragment = strchr(path, '#');
4045 /* we know the path part ended with a fragment, so we know the full URL
4046 string does too and we need to cut it off from there so it isn't used
4048 fragment = strchr(data->change.url, '#');
4054 * So if the URL was A://B/C#D,
4056 * conn->host.name is B
4057 * data->state.path is /C
4060 return findprotocol(data, conn, protop);
4064 * If we're doing a resumed transfer, we need to setup our stuff
4067 static CURLcode setup_range(struct SessionHandle *data)
4069 struct UrlState *s = &data->state;
4070 s->resume_from = data->set.set_resume_from;
4071 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4072 if(s->rangestringalloc)
4076 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4078 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4080 s->rangestringalloc = (s->range)?TRUE:FALSE;
4083 return CURLE_OUT_OF_MEMORY;
4085 /* tell ourselves to fetch this range */
4086 s->use_range = TRUE; /* enable range download */
4089 s->use_range = FALSE; /* disable range download */
4096 * setup_connection_internals() -
4098 * Setup connection internals specific to the requested protocol in the
4099 * SessionHandle. This is inited and setup before the connection is made but
4100 * is about the particular protocol that is to be used.
4102 * This MUST get called after proxy magic has been figured out.
4104 static CURLcode setup_connection_internals(struct connectdata *conn)
4106 const struct Curl_handler * p;
4108 struct SessionHandle *data = conn->data;
4110 /* in some case in the multi state-machine, we go back to the CONNECT state
4111 and then a second (or third or...) call to this function will be made
4112 without doing a DISCONNECT or DONE in between (since the connection is
4113 yet in place) and therefore this function needs to first make sure
4114 there's no lingering previous data allocated. */
4115 Curl_free_request_state(data);
4117 memset(&data->req, 0, sizeof(struct SingleRequest));
4118 data->req.maxdownload = -1;
4120 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4122 /* Perform setup complement if some. */
4125 if(p->setup_connection) {
4126 result = (*p->setup_connection)(conn);
4128 if(result != CURLE_OK)
4131 p = conn->handler; /* May have changed. */
4135 /* we check for -1 here since if proxy was detected already, this
4136 was very likely already set to the proxy port */
4137 conn->port = p->defport;
4139 /* only if remote_port was not already parsed off the URL we use the
4140 default port number */
4141 if(conn->remote_port < 0)
4142 conn->remote_port = (unsigned short)conn->given->defport;
4148 * Curl_free_request_state() should free temp data that was allocated in the
4149 * SessionHandle for this single request.
4152 void Curl_free_request_state(struct SessionHandle *data)
4154 Curl_safefree(data->req.protop);
4155 Curl_safefree(data->req.newurl);
4159 #ifndef CURL_DISABLE_PROXY
4160 /****************************************************************
4161 * Checks if the host is in the noproxy list. returns true if it matches
4162 * and therefore the proxy should NOT be used.
4163 ****************************************************************/
4164 static bool check_noproxy(const char* name, const char* no_proxy)
4166 /* no_proxy=domain1.dom,host.domain2.dom
4167 * (a comma-separated list of hosts which should
4168 * not be proxied, or an asterisk to override
4169 * all proxy variables)
4173 const char* separator = ", ";
4174 size_t no_proxy_len;
4178 if(no_proxy && no_proxy[0]) {
4179 if(Curl_raw_equal("*", no_proxy)) {
4183 /* NO_PROXY was specified and it wasn't just an asterisk */
4185 no_proxy_len = strlen(no_proxy);
4186 endptr = strchr(name, ':');
4188 namelen = endptr - name;
4190 namelen = strlen(name);
4192 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4193 while(tok_start < no_proxy_len &&
4194 strchr(separator, no_proxy[tok_start]) != NULL) {
4195 /* Look for the beginning of the token. */
4199 if(tok_start == no_proxy_len)
4200 break; /* It was all trailing separator chars, no more tokens. */
4202 for(tok_end = tok_start; tok_end < no_proxy_len &&
4203 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4204 /* Look for the end of the token. */
4207 /* To match previous behaviour, where it was necessary to specify
4208 * ".local.com" to prevent matching "notlocal.com", we will leave
4211 if(no_proxy[tok_start] == '.')
4214 if((tok_end - tok_start) <= namelen) {
4215 /* Match the last part of the name to the domain we are checking. */
4216 const char *checkn = name + namelen - (tok_end - tok_start);
4217 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4218 tok_end - tok_start)) {
4219 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4220 /* We either have an exact match, or the previous character is a .
4221 * so it is within the same domain, so no proxy for this host.
4226 } /* if((tok_end - tok_start) <= namelen) */
4227 } /* for(tok_start = 0; tok_start < no_proxy_len;
4228 tok_start = tok_end + 1) */
4229 } /* NO_PROXY was specified and it wasn't just an asterisk */
4234 /****************************************************************
4235 * Detect what (if any) proxy to use. Remember that this selects a host
4236 * name and is not limited to HTTP proxies only.
4237 * The returned pointer must be freed by the caller (unless NULL)
4238 ****************************************************************/
4239 static char *detect_proxy(struct connectdata *conn)
4243 #ifndef CURL_DISABLE_HTTP
4244 /* If proxy was not specified, we check for default proxy environment
4245 * variables, to enable i.e Lynx compliance:
4247 * http_proxy=http://some.server.dom:port/
4248 * https_proxy=http://some.server.dom:port/
4249 * ftp_proxy=http://some.server.dom:port/
4250 * no_proxy=domain1.dom,host.domain2.dom
4251 * (a comma-separated list of hosts which should
4252 * not be proxied, or an asterisk to override
4253 * all proxy variables)
4254 * all_proxy=http://some.server.dom:port/
4255 * (seems to exist for the CERN www lib. Probably
4256 * the first to check for.)
4258 * For compatibility, the all-uppercase versions of these variables are
4259 * checked if the lowercase versions don't exist.
4261 char *no_proxy=NULL;
4262 char proxy_env[128];
4264 no_proxy=curl_getenv("no_proxy");
4266 no_proxy=curl_getenv("NO_PROXY");
4268 if(!check_noproxy(conn->host.name, no_proxy)) {
4269 /* It was not listed as without proxy */
4270 const char *protop = conn->handler->scheme;
4271 char *envp = proxy_env;
4274 /* Now, build <protocol>_proxy and check for such a one to use */
4276 *envp++ = (char)tolower((int)*protop++);
4279 strcpy(envp, "_proxy");
4281 /* read the protocol proxy: */
4282 prox=curl_getenv(proxy_env);
4285 * We don't try the uppercase version of HTTP_PROXY because of
4288 * When curl is used in a webserver application
4289 * environment (cgi or php), this environment variable can
4290 * be controlled by the web server user by setting the
4291 * http header 'Proxy:' to some value.
4293 * This can cause 'internal' http/ftp requests to be
4294 * arbitrarily redirected by any external attacker.
4296 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4297 /* There was no lowercase variable, try the uppercase version: */
4298 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4299 prox=curl_getenv(proxy_env);
4302 if(prox && *prox) { /* don't count "" strings */
4303 proxy = prox; /* use this */
4306 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4308 proxy=curl_getenv("ALL_PROXY");
4310 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4315 #else /* !CURL_DISABLE_HTTP */
4318 #endif /* CURL_DISABLE_HTTP */
4324 * If this is supposed to use a proxy, we need to figure out the proxy
4325 * host name, so that we can re-use an existing connection
4326 * that may exist registered to the same proxy host.
4327 * proxy will be freed before this function returns.
4329 static CURLcode parse_proxy(struct SessionHandle *data,
4330 struct connectdata *conn, char *proxy)
4335 /* We use 'proxyptr' to point to the proxy name from now on... */
4340 /* We do the proxy host string parsing here. We want the host name and the
4341 * port name. Accept a protocol:// prefix
4344 /* Parse the protocol part if present */
4345 endofprot = strstr(proxy, "://");
4347 proxyptr = endofprot+3;
4348 if(checkprefix("socks5h", proxy))
4349 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4350 else if(checkprefix("socks5", proxy))
4351 conn->proxytype = CURLPROXY_SOCKS5;
4352 else if(checkprefix("socks4a", proxy))
4353 conn->proxytype = CURLPROXY_SOCKS4A;
4354 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4355 conn->proxytype = CURLPROXY_SOCKS4;
4356 /* Any other xxx:// : change to http proxy */
4359 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4361 /* Is there a username and password given in this proxy url? */
4362 atsign = strchr(proxyptr, '@');
4364 CURLcode res = CURLE_OK;
4365 char *proxyuser = NULL;
4366 char *proxypasswd = NULL;
4368 res = parse_login_details(proxyptr, atsign - proxyptr,
4369 &proxyuser, &proxypasswd, NULL);
4371 /* found user and password, rip them out. note that we are
4372 unescaping them, as there is otherwise no way to have a
4373 username or password with reserved characters like ':' in
4375 Curl_safefree(conn->proxyuser);
4376 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4377 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4379 conn->proxyuser = strdup("");
4381 if(!conn->proxyuser)
4382 res = CURLE_OUT_OF_MEMORY;
4384 Curl_safefree(conn->proxypasswd);
4385 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4386 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4388 conn->proxypasswd = strdup("");
4390 if(!conn->proxypasswd)
4391 res = CURLE_OUT_OF_MEMORY;
4395 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4396 atsign++; /* the right side of the @-letter */
4399 proxyptr = atsign; /* now use this instead */
4401 res = CURLE_OUT_OF_MEMORY;
4405 Curl_safefree(proxyuser);
4406 Curl_safefree(proxypasswd);
4412 /* start scanning for port number at this point */
4415 /* detect and extract RFC6874-style IPv6-addresses */
4416 if(*proxyptr == '[') {
4417 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4418 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
4421 /* There might be a zone identifier */
4422 if(strncmp("%25", ptr, 3))
4423 infof(data, "Please URL encode %% as %%25, see RFC 6874.\n");
4425 /* Allow unresered characters as defined in RFC 3986 */
4426 while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') ||
4427 (*ptr == '.') || (*ptr == '_') || (*ptr == '~')))
4431 /* yeps, it ended nicely with a bracket as well */
4434 infof(data, "Invalid IPv6 address format\n");
4436 /* Note that if this didn't end with a bracket, we still advanced the
4437 * proxyptr first, but I can't see anything wrong with that as no host
4438 * name nor a numeric can legally start with a bracket.
4442 /* Get port number off proxy.server.com:1080 */
4443 prox_portno = strchr(portptr, ':');
4445 *prox_portno = 0x0; /* cut off number from host name */
4447 /* now set the local port number */
4448 conn->port = strtol(prox_portno, NULL, 10);
4451 if(proxyptr[0]=='/')
4452 /* If the first character in the proxy string is a slash, fail
4453 immediately. The following code will otherwise clear the string which
4454 will lead to code running as if no proxy was set! */
4455 return CURLE_COULDNT_RESOLVE_PROXY;
4457 /* without a port number after the host name, some people seem to use
4458 a slash so we strip everything from the first slash */
4459 atsign = strchr(proxyptr, '/');
4461 *atsign = 0x0; /* cut off path part from host name */
4463 if(data->set.proxyport)
4464 /* None given in the proxy string, then get the default one if it is
4466 conn->port = data->set.proxyport;
4469 /* now, clone the cleaned proxy host name */
4470 conn->proxy.rawalloc = strdup(proxyptr);
4471 conn->proxy.name = conn->proxy.rawalloc;
4473 if(!conn->proxy.rawalloc)
4474 return CURLE_OUT_OF_MEMORY;
4480 * Extract the user and password from the authentication string
4482 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4483 struct connectdata *conn)
4485 char proxyuser[MAX_CURL_USER_LENGTH]="";
4486 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4488 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4489 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4490 MAX_CURL_USER_LENGTH);
4491 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4493 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4494 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4495 MAX_CURL_PASSWORD_LENGTH);
4496 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4499 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4500 if(!conn->proxyuser)
4501 return CURLE_OUT_OF_MEMORY;
4503 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4504 if(!conn->proxypasswd)
4505 return CURLE_OUT_OF_MEMORY;
4509 #endif /* CURL_DISABLE_PROXY */
4514 * Parse the login details (user name, password and options) from the URL and
4515 * strip them out of the host name
4517 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4520 * Outputs: (almost :- all currently undefined)
4521 * conn->bits.user_passwd - non-zero if non-default passwords exist
4522 * user - non-zero length if defined
4523 * passwd - non-zero length if defined
4524 * options - non-zero length if defined
4525 * conn->host.name - remove user name and password
4527 static CURLcode parse_url_login(struct SessionHandle *data,
4528 struct connectdata *conn,
4529 char **user, char **passwd, char **options)
4531 CURLcode result = CURLE_OK;
4533 char *passwdp = NULL;
4534 char *optionsp = NULL;
4536 /* At this point, we're hoping all the other special cases have
4537 * been taken care of, so conn->host.name is at most
4538 * [user[:password][;options]]@]hostname
4540 * We need somewhere to put the embedded details, so do that first.
4543 char *ptr = strchr(conn->host.name, '@');
4544 char *login = conn->host.name;
4546 DEBUGASSERT(!**user);
4547 DEBUGASSERT(!**passwd);
4548 DEBUGASSERT(!**options);
4553 /* We will now try to extract the
4554 * possible login information in a string like:
4555 * ftp://user:password@ftp.my.site:8021/README */
4556 conn->host.name = ++ptr;
4558 /* So the hostname is sane. Only bother interpreting the
4559 * results if we could care. It could still be wasted
4560 * work because it might be overtaken by the programmatically
4561 * set user/passwd, but doing that first adds more cases here :-(
4564 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4567 /* We could use the login information in the URL so extract it */
4568 result = parse_login_details(login, ptr - login - 1,
4569 &userp, &passwdp, &optionsp);
4570 if(result != CURLE_OK)
4576 /* We have a user in the URL */
4577 conn->bits.userpwd_in_url = TRUE;
4578 conn->bits.user_passwd = TRUE; /* enable user+password */
4580 /* Decode the user */
4581 newname = curl_easy_unescape(data, userp, 0, NULL);
4583 result = CURLE_OUT_OF_MEMORY;
4592 /* We have a password in the URL so decode it */
4593 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4595 result = CURLE_OUT_OF_MEMORY;
4600 *passwd = newpasswd;
4604 /* We have an options list in the URL so decode it */
4605 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4607 result = CURLE_OUT_OF_MEMORY;
4612 *options = newoptions;
4618 Curl_safefree(userp);
4619 Curl_safefree(passwdp);
4620 Curl_safefree(optionsp);
4626 * parse_login_details()
4628 * This is used to parse a login string for user name, password and options in
4629 * the following formats:
4633 * user:password;options
4635 * user;options:password
4643 * login [in] - The login string.
4644 * len [in] - The length of the login string.
4645 * userp [in/out] - The address where a pointer to newly allocated memory
4646 * holding the user will be stored upon completion.
4647 * passdwp [in/out] - The address where a pointer to newly allocated memory
4648 * holding the password will be stored upon completion.
4649 * optionsp [in/out] - The address where a pointer to newly allocated memory
4650 * holding the options will be stored upon completion.
4652 * Returns CURLE_OK on success.
4654 static CURLcode parse_login_details(const char *login, const size_t len,
4655 char **userp, char **passwdp,
4658 CURLcode result = CURLE_OK;
4662 const char *psep = NULL;
4663 const char *osep = NULL;
4668 /* Attempt to find the password separator */
4670 psep = strchr(login, ':');
4672 /* Within the constraint of the login string */
4673 if(psep >= login + len)
4677 /* Attempt to find the options separator */
4679 osep = strchr(login, ';');
4681 /* Within the constraint of the login string */
4682 if(osep >= login + len)
4686 /* Calculate the portion lengths */
4688 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4689 (osep ? (size_t)(osep - login) : len));
4691 (osep && osep > psep ? (size_t)(osep - psep) :
4692 (size_t)(login + len - psep)) - 1 : 0);
4694 (psep && psep > osep ? (size_t)(psep - osep) :
4695 (size_t)(login + len - osep)) - 1 : 0);
4697 /* Allocate the user portion buffer */
4699 ubuf = malloc(ulen + 1);
4701 result = CURLE_OUT_OF_MEMORY;
4704 /* Allocate the password portion buffer */
4705 if(!result && passwdp && plen) {
4706 pbuf = malloc(plen + 1);
4708 Curl_safefree(ubuf);
4709 result = CURLE_OUT_OF_MEMORY;
4713 /* Allocate the options portion buffer */
4714 if(!result && optionsp && olen) {
4715 obuf = malloc(olen + 1);
4717 Curl_safefree(pbuf);
4718 Curl_safefree(ubuf);
4719 result = CURLE_OUT_OF_MEMORY;
4724 /* Store the user portion if necessary */
4726 memcpy(ubuf, login, ulen);
4728 Curl_safefree(*userp);
4732 /* Store the password portion if necessary */
4734 memcpy(pbuf, psep + 1, plen);
4736 Curl_safefree(*passwdp);
4740 /* Store the options portion if necessary */
4742 memcpy(obuf, osep + 1, olen);
4744 Curl_safefree(*optionsp);
4752 /*************************************************************
4753 * Figure out the remote port number and fix it in the URL
4755 * No matter if we use a proxy or not, we have to figure out the remote
4756 * port number of various reasons.
4758 * To be able to detect port number flawlessly, we must not confuse them
4759 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4761 * The conn->host.name is currently [user:passwd@]host[:port] where host
4762 * could be a hostname, IPv4 address or IPv6 address.
4764 * The port number embedded in the URL is replaced, if necessary.
4765 *************************************************************/
4766 static CURLcode parse_remote_port(struct SessionHandle *data,
4767 struct connectdata *conn)
4772 /* Note that at this point, the IPv6 address cannot contain any scope
4773 suffix as that has already been removed in the parseurlandfillconn()
4775 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4777 (']' == endbracket)) {
4778 /* this is a RFC2732-style specified IP-address */
4779 conn->bits.ipv6_ip = TRUE;
4781 conn->host.name++; /* skip over the starting bracket */
4782 portptr = strchr(conn->host.name, ']');
4784 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4786 portptr = NULL; /* no port number available */
4791 struct in6_addr in6;
4792 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4793 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4795 failf(data, "IPv6 numerical address used in URL without brackets");
4796 return CURLE_URL_MALFORMAT;
4800 portptr = strrchr(conn->host.name, ':');
4803 if(data->set.use_port && data->state.allow_port) {
4804 /* if set, we use this and ignore the port possibly given in the URL */
4805 conn->remote_port = (unsigned short)data->set.use_port;
4807 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4808 number - since the port number is to be ignored! */
4809 if(conn->bits.httpproxy) {
4810 /* we need to create new URL with the new port number */
4814 if(conn->bits.type_set)
4815 snprintf(type, sizeof(type), ";type=%c",
4816 data->set.prefer_ascii?'A':
4817 (data->set.ftp_list_only?'D':'I'));
4820 * This synthesized URL isn't always right--suffixes like ;type=A are
4821 * stripped off. It would be better to work directly from the original
4822 * URL and simply replace the port part of it.
4824 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4825 conn->bits.ipv6_ip?"[":"", conn->host.name,
4826 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4827 data->state.slash_removed?"/":"", data->state.path,
4830 return CURLE_OUT_OF_MEMORY;
4832 if(data->change.url_alloc) {
4833 Curl_safefree(data->change.url);
4834 data->change.url_alloc = FALSE;
4837 data->change.url = url;
4838 data->change.url_alloc = TRUE;
4842 /* no CURLOPT_PORT given, extract the one from the URL */
4847 port=strtol(portptr+1, &rest, 10); /* Port number must be decimal */
4849 if((port < 0) || (port > 0xffff)) {
4850 /* Single unix standard says port numbers are 16 bits long */
4851 failf(data, "Port number out of range");
4852 return CURLE_URL_MALFORMAT;
4855 else if(rest != &portptr[1]) {
4856 *portptr = '\0'; /* cut off the name there */
4857 conn->remote_port = curlx_ultous(port);
4860 /* Browser behavior adaptation. If there's a colon with no digits after,
4861 just cut off the name there which makes us ignore the colon and just
4862 use the default port. Firefox and Chrome both do that. */
4869 * Override the login details from the URL with that in the CURLOPT_USERPWD
4870 * option or a .netrc file, if applicable.
4872 static CURLcode override_login(struct SessionHandle *data,
4873 struct connectdata *conn,
4874 char **userp, char **passwdp, char **optionsp)
4876 if(data->set.str[STRING_USERNAME]) {
4878 *userp = strdup(data->set.str[STRING_USERNAME]);
4880 return CURLE_OUT_OF_MEMORY;
4883 if(data->set.str[STRING_PASSWORD]) {
4885 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4887 return CURLE_OUT_OF_MEMORY;
4890 if(data->set.str[STRING_OPTIONS]) {
4892 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4894 return CURLE_OUT_OF_MEMORY;
4897 conn->bits.netrc = FALSE;
4898 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4899 int ret = Curl_parsenetrc(conn->host.name,
4901 data->set.str[STRING_NETRC_FILE]);
4903 infof(data, "Couldn't find host %s in the "
4904 DOT_CHAR "netrc file; using defaults\n",
4908 return CURLE_OUT_OF_MEMORY;
4911 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4912 file, so that it is safe to use even if we followed a Location: to a
4913 different host or similar. */
4914 conn->bits.netrc = TRUE;
4916 conn->bits.user_passwd = TRUE; /* enable user+password */
4924 * Set the login details so they're available in the connection
4926 static CURLcode set_login(struct connectdata *conn,
4927 const char *user, const char *passwd,
4928 const char *options)
4930 CURLcode result = CURLE_OK;
4932 /* If our protocol needs a password and we have none, use the defaults */
4933 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4934 /* Store the default user */
4935 conn->user = strdup(CURL_DEFAULT_USER);
4937 /* Store the default password */
4939 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4941 conn->passwd = NULL;
4943 /* This is the default password, so DON'T set conn->bits.user_passwd */
4946 /* Store the user, zero-length if not set */
4947 conn->user = strdup(user);
4949 /* Store the password (only if user is present), zero-length if not set */
4951 conn->passwd = strdup(passwd);
4953 conn->passwd = NULL;
4956 if(!conn->user || !conn->passwd)
4957 result = CURLE_OUT_OF_MEMORY;
4959 /* Store the options, null if not set */
4960 if(!result && options[0]) {
4961 conn->options = strdup(options);
4964 result = CURLE_OUT_OF_MEMORY;
4970 /*************************************************************
4971 * Resolve the address of the server or proxy
4972 *************************************************************/
4973 static CURLcode resolve_server(struct SessionHandle *data,
4974 struct connectdata *conn,
4977 CURLcode result=CURLE_OK;
4978 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4980 /*************************************************************
4981 * Resolve the name of the server or proxy
4982 *************************************************************/
4983 if(conn->bits.reuse)
4984 /* We're reusing the connection - no need to resolve anything, and
4985 fix_hostname() was called already in create_conn() for the re-use
4990 /* this is a fresh connect */
4992 struct Curl_dns_entry *hostaddr;
4994 /* set a pointer to the hostname we display */
4995 fix_hostname(data, conn, &conn->host);
4997 if(!conn->proxy.name || !*conn->proxy.name) {
4998 /* If not connecting via a proxy, extract the port from the URL, if it is
4999 * there, thus overriding any defaults that might have been set above. */
5000 conn->port = conn->remote_port; /* it is the same port */
5002 /* Resolve target host right on */
5003 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
5004 &hostaddr, timeout_ms);
5005 if(rc == CURLRESOLV_PENDING)
5008 else if(rc == CURLRESOLV_TIMEDOUT)
5009 result = CURLE_OPERATION_TIMEDOUT;
5011 else if(!hostaddr) {
5012 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
5013 result = CURLE_COULDNT_RESOLVE_HOST;
5014 /* don't return yet, we need to clean up the timeout first */
5018 /* This is a proxy that hasn't been resolved yet. */
5020 /* IDN-fix the proxy name */
5021 fix_hostname(data, conn, &conn->proxy);
5024 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
5025 &hostaddr, timeout_ms);
5027 if(rc == CURLRESOLV_PENDING)
5030 else if(rc == CURLRESOLV_TIMEDOUT)
5031 result = CURLE_OPERATION_TIMEDOUT;
5033 else if(!hostaddr) {
5034 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
5035 result = CURLE_COULDNT_RESOLVE_PROXY;
5036 /* don't return yet, we need to clean up the timeout first */
5039 DEBUGASSERT(conn->dns_entry == NULL);
5040 conn->dns_entry = hostaddr;
5047 * Cleanup the connection just allocated before we can move along and use the
5048 * previously existing one. All relevant data is copied over and old_conn is
5049 * ready for freeing once this function returns.
5051 static void reuse_conn(struct connectdata *old_conn,
5052 struct connectdata *conn)
5054 if(old_conn->proxy.rawalloc)
5055 free(old_conn->proxy.rawalloc);
5057 /* free the SSL config struct from this connection struct as this was
5058 allocated in vain and is targeted for destruction */
5059 Curl_free_ssl_config(&old_conn->ssl_config);
5061 conn->data = old_conn->data;
5063 /* get the user+password information from the old_conn struct since it may
5064 * be new for this request even when we re-use an existing connection */
5065 conn->bits.user_passwd = old_conn->bits.user_passwd;
5066 if(conn->bits.user_passwd) {
5067 /* use the new user name and password though */
5068 Curl_safefree(conn->user);
5069 Curl_safefree(conn->passwd);
5070 conn->user = old_conn->user;
5071 conn->passwd = old_conn->passwd;
5072 old_conn->user = NULL;
5073 old_conn->passwd = NULL;
5076 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
5077 if(conn->bits.proxy_user_passwd) {
5078 /* use the new proxy user name and proxy password though */
5079 Curl_safefree(conn->proxyuser);
5080 Curl_safefree(conn->proxypasswd);
5081 conn->proxyuser = old_conn->proxyuser;
5082 conn->proxypasswd = old_conn->proxypasswd;
5083 old_conn->proxyuser = NULL;
5084 old_conn->proxypasswd = NULL;
5087 /* host can change, when doing keepalive with a proxy or if the case is
5088 different this time etc */
5089 Curl_safefree(conn->host.rawalloc);
5090 conn->host=old_conn->host;
5092 /* persist connection info in session handle */
5093 Curl_persistconninfo(conn);
5096 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5098 Curl_safefree(old_conn->user);
5099 Curl_safefree(old_conn->passwd);
5100 Curl_safefree(old_conn->proxyuser);
5101 Curl_safefree(old_conn->proxypasswd);
5102 Curl_safefree(old_conn->localdev);
5104 Curl_llist_destroy(old_conn->send_pipe, NULL);
5105 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5107 old_conn->send_pipe = NULL;
5108 old_conn->recv_pipe = NULL;
5110 Curl_safefree(old_conn->master_buffer);
5114 * create_conn() sets up a new connectdata struct, or re-uses an already
5115 * existing one, and resolves host name.
5117 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5118 * response will be coming asynchronously. If *async is FALSE, the name is
5121 * @param data The sessionhandle pointer
5122 * @param in_connect is set to the next connection data pointer
5123 * @param async is set TRUE when an async DNS resolution is pending
5124 * @see Curl_setup_conn()
5126 * *NOTE* this function assigns the conn->data pointer!
5129 static CURLcode create_conn(struct SessionHandle *data,
5130 struct connectdata **in_connect,
5133 CURLcode result = CURLE_OK;
5134 struct connectdata *conn;
5135 struct connectdata *conn_temp = NULL;
5138 char *passwd = NULL;
5139 char *options = NULL;
5142 bool prot_missing = FALSE;
5143 bool no_connections_available = FALSE;
5144 bool force_reuse = FALSE;
5145 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5146 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5150 /*************************************************************
5152 *************************************************************/
5154 if(!data->change.url) {
5155 result = CURLE_URL_MALFORMAT;
5159 /* First, split up the current URL in parts so that we can use the
5160 parts for checking against the already present connections. In order
5161 to not have to modify everything at once, we allocate a temporary
5162 connection data struct and fill in for comparison purposes. */
5163 conn = allocate_conn(data);
5166 result = CURLE_OUT_OF_MEMORY;
5170 /* We must set the return variable as soon as possible, so that our
5171 parent can cleanup any possible allocs we may have done before
5175 /* This initing continues below, see the comment "Continue connectdata
5176 * initialization here" */
5178 /***********************************************************
5179 * We need to allocate memory to store the path in. We get the size of the
5180 * full URL to be sure, and we need to make it at least 256 bytes since
5181 * other parts of the code will rely on this fact
5182 ***********************************************************/
5183 #define LEAST_PATH_ALLOC 256
5184 urllen=strlen(data->change.url);
5185 if(urllen < LEAST_PATH_ALLOC)
5186 urllen=LEAST_PATH_ALLOC;
5189 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5190 * 1 - an extra terminating zero
5191 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5194 Curl_safefree(data->state.pathbuffer);
5195 data->state.path = NULL;
5197 data->state.pathbuffer = malloc(urllen+2);
5198 if(NULL == data->state.pathbuffer) {
5199 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5202 data->state.path = data->state.pathbuffer;
5204 conn->host.rawalloc = malloc(urllen+2);
5205 if(NULL == conn->host.rawalloc) {
5206 Curl_safefree(data->state.pathbuffer);
5207 data->state.path = NULL;
5208 result = CURLE_OUT_OF_MEMORY;
5212 conn->host.name = conn->host.rawalloc;
5213 conn->host.name[0] = 0;
5216 passwd = strdup("");
5217 options = strdup("");
5218 if(!user || !passwd || !options) {
5219 result = CURLE_OUT_OF_MEMORY;
5223 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5225 if(result != CURLE_OK)
5228 /*************************************************************
5229 * No protocol part in URL was used, add it!
5230 *************************************************************/
5232 /* We're guessing prefixes here and if we're told to use a proxy or if
5233 we're gonna follow a Location: later or... then we need the protocol
5234 part added so that we have a valid URL. */
5237 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5240 result = CURLE_OUT_OF_MEMORY;
5244 if(data->change.url_alloc) {
5245 Curl_safefree(data->change.url);
5246 data->change.url_alloc = FALSE;
5249 data->change.url = reurl;
5250 data->change.url_alloc = TRUE; /* free this later */
5253 /*************************************************************
5254 * If the protocol can't handle url query strings, then cut
5255 * off the unhandable part
5256 *************************************************************/
5257 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5258 char *path_q_sep = strchr(conn->data->state.path, '?');
5260 /* according to rfc3986, allow the query (?foo=bar)
5261 also on protocols that can't handle it.
5263 cut the string-part after '?'
5266 /* terminate the string */
5271 if(data->set.str[STRING_BEARER]) {
5272 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5273 if(!conn->xoauth2_bearer) {
5274 result = CURLE_OUT_OF_MEMORY;
5279 #ifndef CURL_DISABLE_PROXY
5280 /*************************************************************
5281 * Extract the user and password from the authentication string
5282 *************************************************************/
5283 if(conn->bits.proxy_user_passwd) {
5284 result = parse_proxy_auth(data, conn);
5285 if(result != CURLE_OK)
5289 /*************************************************************
5290 * Detect what (if any) proxy to use
5291 *************************************************************/
5292 if(data->set.str[STRING_PROXY]) {
5293 proxy = strdup(data->set.str[STRING_PROXY]);
5294 /* if global proxy is set, this is it */
5296 failf(data, "memory shortage");
5297 result = CURLE_OUT_OF_MEMORY;
5302 if(data->set.str[STRING_NOPROXY] &&
5303 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5305 free(proxy); /* proxy is in exception list */
5310 proxy = detect_proxy(conn);
5312 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5313 free(proxy); /* Don't bother with an empty proxy string or if the
5314 protocol doesn't work with network */
5318 /***********************************************************************
5319 * If this is supposed to use a proxy, we need to figure out the proxy host
5320 * name, proxy type and port number, so that we can re-use an existing
5321 * connection that may exist registered to the same proxy host.
5322 ***********************************************************************/
5324 result = parse_proxy(data, conn, proxy);
5326 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5331 if((conn->proxytype == CURLPROXY_HTTP) ||
5332 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5333 #ifdef CURL_DISABLE_HTTP
5334 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5335 result = CURLE_UNSUPPORTED_PROTOCOL;
5338 /* force this connection's protocol to become HTTP if not already
5339 compatible - if it isn't tunneling through */
5340 if(!(conn->handler->protocol & PROTO_FAMILY_HTTP) &&
5341 !conn->bits.tunnel_proxy)
5342 conn->handler = &Curl_handler_http;
5344 conn->bits.httpproxy = TRUE;
5348 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5349 conn->bits.proxy = TRUE;
5352 /* we aren't using the proxy after all... */
5353 conn->bits.proxy = FALSE;
5354 conn->bits.httpproxy = FALSE;
5355 conn->bits.proxy_user_passwd = FALSE;
5356 conn->bits.tunnel_proxy = FALSE;
5359 #endif /* CURL_DISABLE_PROXY */
5361 /*************************************************************
5362 * If the protocol is using SSL and HTTP proxy is used, we set
5363 * the tunnel_proxy bit.
5364 *************************************************************/
5365 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5366 conn->bits.tunnel_proxy = TRUE;
5368 /*************************************************************
5369 * Figure out the remote port number and fix it in the URL
5370 *************************************************************/
5371 result = parse_remote_port(data, conn);
5372 if(result != CURLE_OK)
5375 /* Check for overridden login details and set them accordingly so they
5376 they are known when protocol->setup_connection is called! */
5377 result = override_login(data, conn, &user, &passwd, &options);
5378 if(result != CURLE_OK)
5380 result = set_login(conn, user, passwd, options);
5381 if(result != CURLE_OK)
5384 /*************************************************************
5385 * Setup internals depending on protocol. Needs to be done after
5386 * we figured out what/if proxy to use.
5387 *************************************************************/
5388 result = setup_connection_internals(conn);
5389 if(result != CURLE_OK)
5392 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5393 conn->send[FIRSTSOCKET] = Curl_send_plain;
5394 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5395 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5397 /***********************************************************************
5398 * file: is a special case in that it doesn't need a network connection
5399 ***********************************************************************/
5400 #ifndef CURL_DISABLE_FILE
5401 if(conn->handler->flags & PROTOPT_NONETWORK) {
5403 /* this is supposed to be the connect function so we better at least check
5404 that the file is present here! */
5405 DEBUGASSERT(conn->handler->connect_it);
5406 result = conn->handler->connect_it(conn, &done);
5408 /* Setup a "faked" transfer that'll do nothing */
5409 if(CURLE_OK == result) {
5411 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5413 ConnectionStore(data, conn);
5416 * Setup whatever necessary for a resumed transfer
5418 result = setup_range(data);
5420 DEBUGASSERT(conn->handler->done);
5421 /* we ignore the return code for the protocol-specific DONE */
5422 (void)conn->handler->done(conn, result, FALSE);
5426 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5427 -1, NULL); /* no upload */
5430 /* since we skip do_init() */
5437 /* Get a cloned copy of the SSL config situation stored in the
5438 connection struct. But to get this going nicely, we must first make
5439 sure that the strings in the master copy are pointing to the correct
5440 strings in the session handle strings array!
5442 Keep in mind that the pointers in the master copy are pointing to strings
5443 that will be freed as part of the SessionHandle struct, but all cloned
5444 copies will be separately allocated.
5446 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5447 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5448 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5449 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5450 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5451 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5452 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5454 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5455 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5458 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5459 result = CURLE_OUT_OF_MEMORY;
5463 /*************************************************************
5464 * Check the current list of connections to see if we can
5465 * re-use an already existing one or if we have to create a
5467 *************************************************************/
5469 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5470 we only acknowledge this option if this is not a re-used connection
5471 already (which happens due to follow-location or during a HTTP
5472 authentication phase). */
5473 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5476 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5478 /* If we found a reusable connection, we may still want to
5479 open a new connection if we are pipelining. */
5480 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5481 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5483 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5484 conn_temp->connection_id, pipelen);
5486 if(conn_temp->bundle->num_connections < max_host_connections &&
5487 data->state.conn_cache->num_connections < max_total_connections) {
5488 /* We want a new connection anyway */
5491 infof(data, "We can reuse, but we want a new connection anyway\n");
5498 * We already have a connection for this, we got the former connection
5499 * in the conn_temp variable and thus we need to cleanup the one we
5500 * just allocated before we can move along and use the previously
5503 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5504 handle in a multi stack may nick it */
5505 reuse_conn(conn, conn_temp);
5506 free(conn); /* we don't need this anymore */
5510 /* set a pointer to the hostname we display */
5511 fix_hostname(data, conn, &conn->host);
5513 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5514 conn->connection_id,
5515 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5518 /* We have decided that we want a new connection. However, we may not
5519 be able to do that if we have reached the limit of how many
5520 connections we are allowed to open. */
5521 struct connectbundle *bundle;
5523 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5525 if(max_host_connections > 0 && bundle &&
5526 (bundle->num_connections >= max_host_connections)) {
5527 struct connectdata *conn_candidate;
5529 /* The bundle is full. Let's see if we can kill a connection. */
5530 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5532 if(conn_candidate) {
5533 /* Set the connection's owner correctly, then kill it */
5534 conn_candidate->data = data;
5535 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5538 no_connections_available = TRUE;
5541 if(max_total_connections > 0 &&
5542 (data->state.conn_cache->num_connections >= max_total_connections)) {
5543 struct connectdata *conn_candidate;
5545 /* The cache is full. Let's see if we can kill a connection. */
5546 conn_candidate = find_oldest_idle_connection(data);
5548 if(conn_candidate) {
5549 /* Set the connection's owner correctly, then kill it */
5550 conn_candidate->data = data;
5551 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5554 no_connections_available = TRUE;
5558 if(no_connections_available) {
5559 infof(data, "No connections available.\n");
5564 result = CURLE_NO_CONNECTION_AVAILABLE;
5569 * This is a brand new connection, so let's store it in the connection
5572 ConnectionStore(data, conn);
5576 /* Mark the connection as used */
5579 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5583 * Setup whatever necessary for a resumed transfer
5585 result = setup_range(data);
5589 /* Continue connectdata initialization here. */
5592 * Inherit the proper values from the urldata struct AFTER we have arranged
5593 * the persistent connection stuff
5595 conn->fread_func = data->set.fread_func;
5596 conn->fread_in = data->set.in;
5597 conn->seek_func = data->set.seek_func;
5598 conn->seek_client = data->set.seek_client;
5600 /*************************************************************
5601 * Resolve the address of the server or proxy
5602 *************************************************************/
5603 result = resolve_server(data, conn, async);
5607 Curl_safefree(options);
5608 Curl_safefree(passwd);
5609 Curl_safefree(user);
5610 Curl_safefree(proxy);
5614 /* Curl_setup_conn() is called after the name resolve initiated in
5615 * create_conn() is all done.
5617 * Curl_setup_conn() also handles reused connections
5619 * conn->data MUST already have been setup fine (in create_conn)
5622 CURLcode Curl_setup_conn(struct connectdata *conn,
5623 bool *protocol_done)
5625 CURLcode result = CURLE_OK;
5626 struct SessionHandle *data = conn->data;
5628 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5630 if(conn->handler->flags & PROTOPT_NONETWORK) {
5631 /* nothing to setup when not using a network */
5632 *protocol_done = TRUE;
5635 *protocol_done = FALSE; /* default to not done */
5637 /* set proxy_connect_closed to false unconditionally already here since it
5638 is used strictly to provide extra information to a parent function in the
5639 case of proxy CONNECT failures and we must make sure we don't have it
5640 lingering set from a previous invoke */
5641 conn->bits.proxy_connect_closed = FALSE;
5644 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5645 * basically anything through a http proxy we can't limit this based on
5648 if(data->set.str[STRING_USERAGENT]) {
5649 Curl_safefree(conn->allocptr.uagent);
5650 conn->allocptr.uagent =
5651 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5652 if(!conn->allocptr.uagent)
5653 return CURLE_OUT_OF_MEMORY;
5656 data->req.headerbytecount = 0;
5658 #ifdef CURL_DO_LINEEND_CONV
5659 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5660 #endif /* CURL_DO_LINEEND_CONV */
5662 /* set start time here for timeout purposes in the connect procedure, it
5663 is later set again for the progress meter purpose */
5664 conn->now = Curl_tvnow();
5666 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5667 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5668 result = Curl_connecthost(conn, conn->dns_entry);
5673 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5674 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5675 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5676 *protocol_done = TRUE;
5677 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5678 Curl_verboseconnect(conn);
5681 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5682 set this here perhaps a second time */
5686 * This check is quite a hack. We're calling _fsetmode to fix the problem
5687 * with fwrite converting newline characters (you get mangled text files,
5688 * and corrupted binary files when you download to stdout and redirect it to
5692 if((data->set.out)->_handle == NULL) {
5693 _fsetmode(stdout, "b");
5700 CURLcode Curl_connect(struct SessionHandle *data,
5701 struct connectdata **in_connect,
5703 bool *protocol_done)
5707 *asyncp = FALSE; /* assume synchronous resolves by default */
5709 /* call the stuff that needs to be called */
5710 code = create_conn(data, in_connect, asyncp);
5712 if(CURLE_OK == code) {
5714 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5716 *protocol_done = TRUE;
5718 /* DNS resolution is done: that's either because this is a reused
5719 connection, in which case DNS was unnecessary, or because DNS
5720 really did finish already (synch resolver/fast async resolve) */
5721 code = Curl_setup_conn(*in_connect, protocol_done);
5725 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5730 if(code && *in_connect) {
5731 /* We're not allowed to return failure with memory left allocated
5732 in the connectdata struct, free those here */
5733 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5734 *in_connect = NULL; /* return a NULL */
5740 CURLcode Curl_done(struct connectdata **connp,
5741 CURLcode status, /* an error if this is called after an
5742 error was detected */
5746 struct connectdata *conn;
5747 struct SessionHandle *data;
5749 DEBUGASSERT(*connp);
5755 /* Stop if Curl_done() has already been called */
5758 Curl_getoff_all_pipelines(data, conn);
5760 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5761 !data->set.reuse_forbid &&
5763 /* Stop if pipeline is not empty and we do not have to close
5767 conn->bits.done = TRUE; /* called just now! */
5769 /* Cleanup possible redirect junk */
5770 if(data->req.newurl) {
5771 free(data->req.newurl);
5772 data->req.newurl = NULL;
5774 if(data->req.location) {
5775 free(data->req.location);
5776 data->req.location = NULL;
5779 Curl_resolver_cancel(conn);
5781 if(conn->dns_entry) {
5782 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5783 conn->dns_entry = NULL;
5787 case CURLE_ABORTED_BY_CALLBACK:
5788 case CURLE_READ_ERROR:
5789 case CURLE_WRITE_ERROR:
5790 /* When we're aborted due to a callback return code it basically have to
5791 be counted as premature as there is trouble ahead if we don't. We have
5792 many callbacks and protocols work differently, we could potentially do
5793 this more fine-grained in the future. */
5799 /* this calls the protocol-specific function pointer previously set */
5800 if(conn->handler->done)
5801 result = conn->handler->done(conn, status, premature);
5805 if(!result && Curl_pgrsDone(conn))
5806 result = CURLE_ABORTED_BY_CALLBACK;
5808 /* if the transfer was completed in a paused state there can be buffered
5809 data left to write and then kill */
5810 if(data->state.tempwrite) {
5811 free(data->state.tempwrite);
5812 data->state.tempwrite = NULL;
5815 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5816 forced us to close this no matter what we think.
5818 if conn->bits.close is TRUE, it means that the connection should be
5819 closed in spite of all our efforts to be nice, due to protocol
5820 restrictions in our or the server's end
5822 if premature is TRUE, it means this connection was said to be DONE before
5823 the entire request operation is complete and thus we can't know in what
5824 state it is for re-using, so we're forced to close it. In a perfect world
5825 we can add code that keep track of if we really must close it here or not,
5826 but currently we have no such detail knowledge.
5828 if(data->set.reuse_forbid || conn->bits.close || premature) {
5829 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5831 /* If we had an error already, make sure we return that one. But
5832 if we got a new error, return that. */
5837 /* the connection is no longer in use */
5838 if(ConnectionDone(data, conn)) {
5839 /* remember the most recently used connection */
5840 data->state.lastconnect = conn;
5842 infof(data, "Connection #%ld to host %s left intact\n",
5843 conn->connection_id,
5844 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5847 data->state.lastconnect = NULL;
5850 *connp = NULL; /* to make the caller of this function better detect that
5851 this was either closed or handed over to the connection
5852 cache here, and therefore cannot be used from this point on
5854 Curl_free_request_state(data);
5860 * do_init() inits the readwrite session. This is inited each time (in the DO
5861 * function before the protocol-specific DO functions are invoked) for a
5862 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5863 * nothing in here depends on stuff that are setup dynamically for the
5867 static CURLcode do_init(struct connectdata *conn)
5869 struct SessionHandle *data = conn->data;
5870 struct SingleRequest *k = &data->req;
5872 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5873 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5874 data->state.expect100header = FALSE;
5876 if(data->set.opt_no_body)
5877 /* in HTTP lingo, no body means using the HEAD request... */
5878 data->set.httpreq = HTTPREQ_HEAD;
5879 else if(HTTPREQ_HEAD == data->set.httpreq)
5880 /* ... but if unset there really is no perfect method that is the
5881 "opposite" of HEAD but in reality most people probably think GET
5882 then. The important thing is that we can't let it remain HEAD if the
5883 opt_no_body is set FALSE since then we'll behave wrong when getting
5885 data->set.httpreq = HTTPREQ_GET;
5887 k->start = Curl_tvnow(); /* start time */
5888 k->now = k->start; /* current time is now */
5889 k->header = TRUE; /* assume header */
5893 k->buf = data->state.buffer;
5894 k->uploadbuf = data->state.uploadbuffer;
5895 k->hbufp = data->state.headerbuff;
5896 k->ignorebody=FALSE;
5898 Curl_speedinit(data);
5900 Curl_pgrsSetUploadCounter(data, 0);
5901 Curl_pgrsSetDownloadCounter(data, 0);
5907 * do_complete is called when the DO actions are complete.
5909 * We init chunking and trailer bits to their default values here immediately
5910 * before receiving any header data for the current request in the pipeline.
5912 static void do_complete(struct connectdata *conn)
5914 conn->data->req.chunk=FALSE;
5915 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5916 conn->sockfd:conn->writesockfd)+1;
5917 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5920 CURLcode Curl_do(struct connectdata **connp, bool *done)
5922 CURLcode result=CURLE_OK;
5923 struct connectdata *conn = *connp;
5924 struct SessionHandle *data = conn->data;
5926 if(conn->handler->do_it) {
5927 /* generic protocol-specific function pointer set in curl_connect() */
5928 result = conn->handler->do_it(conn, done);
5930 /* This was formerly done in transfer.c, but we better do it here */
5931 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5933 * If the connection is using an easy handle, call reconnect
5934 * to re-establish the connection. Otherwise, let the multi logic
5935 * figure out how to re-establish the connection.
5938 result = Curl_reconnect_request(connp);
5940 if(result == CURLE_OK) {
5941 /* ... finally back to actually retry the DO phase */
5942 conn = *connp; /* re-assign conn since Curl_reconnect_request
5943 creates a new connection */
5944 result = conn->handler->do_it(conn, done);
5951 if((result == CURLE_OK) && *done)
5952 /* do_complete must be called after the protocol-specific DO function */
5959 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5960 * second stage DO state which (wrongly) was introduced to support FTP's
5961 * second connection.
5963 * TODO: A future libcurl should be able to work away this state.
5965 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5966 * DOING state there's more work to do!
5969 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5971 CURLcode result=CURLE_OK;
5975 if(conn->handler->do_more)
5976 result = conn->handler->do_more(conn, complete);
5978 if(!result && (*complete == 1))
5979 /* do_complete must be called after the protocol-specific DO function */