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;
283 static CURLcode setstropt(char **charp, char *s)
285 /* Release the previous storage at `charp' and replace by a dynamic storage
286 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
288 Curl_safefree(*charp);
294 return CURLE_OUT_OF_MEMORY;
302 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
304 CURLcode result = CURLE_OK;
308 /* Parse the login details if specified. It not then we treat NULL as a hint
309 to clear the existing data */
311 result = parse_login_details(option, strlen(option),
312 (userp ? &user : NULL),
313 (passwdp ? &passwd : NULL),
318 /* Store the username part of option if required */
320 if(!user && option && option[0] == ':') {
321 /* Allocate an empty string instead of returning NULL as user name */
324 result = CURLE_OUT_OF_MEMORY;
327 Curl_safefree(*userp);
331 /* Store the password part of option if required */
333 Curl_safefree(*passwdp);
341 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
343 CURLcode r = CURLE_OK;
346 /* Copy src->set into dst->set first, then deal with the strings
350 /* clear all string pointers first */
351 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
353 /* duplicate all strings */
354 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
355 r = setstropt(&dst->set.str[i], src->set.str[i]);
360 /* If a failure occurred, freeing has to be performed externally. */
365 * This is the internal function curl_easy_cleanup() calls. This should
366 * cleanup and free all resources associated with this sessionhandle.
368 * NOTE: if we ever add something that attempts to write to a socket or
369 * similar here, we must ignore SIGPIPE first. It is currently only done
370 * when curl_easy_perform() is invoked.
373 CURLcode Curl_close(struct SessionHandle *data)
375 struct Curl_multi *m;
380 Curl_expire(data, 0); /* shut off timers */
385 /* This handle is still part of a multi handle, take care of this first
386 and detach this handle from there. */
387 curl_multi_remove_handle(data->multi, data);
390 /* when curl_easy_perform() is used, it creates its own multi handle to
391 use and this is the one */
392 curl_multi_cleanup(data->multi_easy);
394 /* Destroy the timeout list that is held in the easy handle. It is
395 /normally/ done by curl_multi_remove_handle() but this is "just in
397 if(data->state.timeoutlist) {
398 Curl_llist_destroy(data->state.timeoutlist, NULL);
399 data->state.timeoutlist = NULL;
402 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
403 the multi handle, since that function uses the magic
406 if(data->state.rangestringalloc)
407 free(data->state.range);
409 /* Free the pathbuffer */
410 Curl_safefree(data->state.pathbuffer);
411 data->state.path = NULL;
413 /* freed here just in case DONE wasn't called */
414 Curl_free_request_state(data);
416 /* Close down all open SSL info and sessions */
417 Curl_ssl_close_all(data);
418 Curl_safefree(data->state.first_host);
419 Curl_safefree(data->state.scratch);
420 Curl_ssl_free_certinfo(data);
422 if(data->change.referer_alloc) {
423 Curl_safefree(data->change.referer);
424 data->change.referer_alloc = FALSE;
426 data->change.referer = NULL;
428 if(data->change.url_alloc) {
429 Curl_safefree(data->change.url);
430 data->change.url_alloc = FALSE;
432 data->change.url = NULL;
434 Curl_safefree(data->state.headerbuff);
436 Curl_flush_cookies(data, 1);
438 Curl_digest_cleanup(data);
440 Curl_safefree(data->info.contenttype);
441 Curl_safefree(data->info.wouldredirect);
443 /* this destroys the channel and we cannot use it anymore after this */
444 Curl_resolver_cleanup(data->state.resolver);
446 Curl_convert_close(data);
448 /* No longer a dirty share, if it exists */
450 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
451 data->share->dirty--;
452 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
461 * Initialize the UserDefined fields within a SessionHandle.
462 * This may be safely called on a new or existing SessionHandle.
464 CURLcode Curl_init_userdefined(struct UserDefined *set)
466 CURLcode res = CURLE_OK;
468 set->out = stdout; /* default output to stdout */
469 set->in = stdin; /* default input from stdin */
470 set->err = stderr; /* default stderr to stderr */
472 /* use fwrite as default function to store output */
473 set->fwrite_func = (curl_write_callback)fwrite;
475 /* use fread as default function to read input */
476 set->fread_func = (curl_read_callback)fread;
477 set->is_fread_set = 0;
478 set->is_fwrite_set = 0;
480 set->seek_func = ZERO_NULL;
481 set->seek_client = ZERO_NULL;
483 /* conversion callbacks for non-ASCII hosts */
484 set->convfromnetwork = ZERO_NULL;
485 set->convtonetwork = ZERO_NULL;
486 set->convfromutf8 = ZERO_NULL;
488 set->filesize = -1; /* we don't know the size */
489 set->postfieldsize = -1; /* unknown size */
490 set->maxredirs = -1; /* allow any amount by default */
492 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
493 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
494 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
495 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
496 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
497 set->ftp_filemethod = FTPFILE_MULTICWD;
499 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
501 /* Set the default size of the SSL session ID cache */
502 set->ssl.max_ssl_sessions = 5;
504 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
505 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
506 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
507 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
509 /* make libcurl quiet by default: */
510 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
513 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
514 * switched off unless wanted.
516 set->ssl.verifypeer = TRUE;
517 set->ssl.verifyhost = TRUE;
519 set->ssl.authtype = CURL_TLSAUTH_NONE;
521 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
523 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
525 set->new_file_perms = 0644; /* Default permissions */
526 set->new_directory_perms = 0755; /* Default permissions */
528 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
529 define since we internally only use the lower 16 bits for the passed
530 in bitmask to not conflict with the private bits */
531 set->allowed_protocols = CURLPROTO_ALL;
532 set->redir_protocols =
533 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
535 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
537 * disallow unprotected protection negotiation NEC reference implementation
538 * seem not to follow rfc1961 section 4.3/4.4
540 set->socks5_gssapi_nec = FALSE;
541 /* set default gssapi service name */
542 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
543 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
548 /* This is our preferred CA cert bundle/path since install time */
549 #if defined(CURL_CA_BUNDLE)
550 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
551 #elif defined(CURL_CA_PATH)
552 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
555 set->wildcardmatch = FALSE;
556 set->chunk_bgn = ZERO_NULL;
557 set->chunk_end = ZERO_NULL;
559 /* tcp keepalives are disabled by default, but provide reasonable values for
560 * the interval and idle times.
562 set->tcp_keepalive = FALSE;
563 set->tcp_keepintvl = 60;
564 set->tcp_keepidle = 60;
566 set->ssl_enable_npn = TRUE;
567 set->ssl_enable_alpn = TRUE;
569 set->expect_100_timeout = 1000L; /* Wait for a second by default. */
576 * @param curl is a pointer to a sessionhandle pointer that gets set by this
581 CURLcode Curl_open(struct SessionHandle **curl)
583 CURLcode res = CURLE_OK;
584 struct SessionHandle *data;
587 /* Very simple start-up: alloc the struct, init it with zeroes and return */
588 data = calloc(1, sizeof(struct SessionHandle));
590 /* this is a very serious error */
591 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
592 return CURLE_OUT_OF_MEMORY;
595 data->magic = CURLEASY_MAGIC_NUMBER;
597 status = Curl_resolver_init(&data->state.resolver);
599 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
604 /* We do some initial setup here, all those fields that can't be just 0 */
606 data->state.headerbuff = malloc(HEADERSIZE);
607 if(!data->state.headerbuff) {
608 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
609 res = CURLE_OUT_OF_MEMORY;
612 res = Curl_init_userdefined(&data->set);
614 data->state.headersize=HEADERSIZE;
616 Curl_convert_init(data);
618 /* most recent connection is not yet defined */
619 data->state.lastconnect = NULL;
621 data->progress.flags |= PGRS_HIDE;
622 data->state.current_speed = -1; /* init to negative == impossible */
624 data->wildcard.state = CURLWC_INIT;
625 data->wildcard.filelist = NULL;
626 data->set.fnmatch = ZERO_NULL;
627 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
631 Curl_resolver_cleanup(data->state.resolver);
632 if(data->state.headerbuff)
633 free(data->state.headerbuff);
644 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
648 CURLcode result = CURLE_OK;
650 #ifndef CURL_DISABLE_HTTP
655 case CURLOPT_DNS_CACHE_TIMEOUT:
656 data->set.dns_cache_timeout = va_arg(param, long);
658 case CURLOPT_DNS_USE_GLOBAL_CACHE:
659 /* remember we want this enabled */
660 arg = va_arg(param, long);
661 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
663 case CURLOPT_SSL_CIPHER_LIST:
664 /* set a list of cipher we want to use in the SSL connection */
665 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
666 va_arg(param, char *));
669 case CURLOPT_RANDOM_FILE:
671 * This is the path name to a file that contains random data to seed
672 * the random SSL stuff with. The file is only used for reading.
674 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
675 va_arg(param, char *));
677 case CURLOPT_EGDSOCKET:
679 * The Entropy Gathering Daemon socket pathname
681 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
682 va_arg(param, char *));
684 case CURLOPT_MAXCONNECTS:
686 * Set the absolute number of maximum simultaneous alive connection that
687 * libcurl is allowed to have.
689 data->set.maxconnects = va_arg(param, long);
691 case CURLOPT_FORBID_REUSE:
693 * When this transfer is done, it must not be left to be reused by a
694 * subsequent transfer but shall be closed immediately.
696 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
698 case CURLOPT_FRESH_CONNECT:
700 * This transfer shall not use a previously cached connection but
701 * should be made with a fresh new connect!
703 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
705 case CURLOPT_VERBOSE:
707 * Verbose means infof() calls that give a lot of information about
708 * the connection and transfer procedures as well as internal choices.
710 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
714 * Set to include the header in the general data output stream.
716 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
718 case CURLOPT_NOPROGRESS:
720 * Shut off the internal supported progress meter
722 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
723 if(data->set.hide_progress)
724 data->progress.flags |= PGRS_HIDE;
726 data->progress.flags &= ~PGRS_HIDE;
730 * Do not include the body part in the output data stream.
732 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
734 case CURLOPT_FAILONERROR:
736 * Don't output the >=300 error code HTML-page, but instead only
739 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
744 * We want to sent data to the remote host. If this is HTTP, that equals
745 * using the PUT request.
747 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
748 if(data->set.upload) {
749 /* If this is HTTP, PUT is what's needed to "upload" */
750 data->set.httpreq = HTTPREQ_PUT;
751 data->set.opt_no_body = FALSE; /* this is implied */
754 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
755 then this can be changed to HEAD later on) */
756 data->set.httpreq = HTTPREQ_GET;
758 case CURLOPT_FILETIME:
760 * Try to get the file time of the remote document. The time will
761 * later (possibly) become available using curl_easy_getinfo().
763 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
765 case CURLOPT_FTP_CREATE_MISSING_DIRS:
767 * An FTP option that modifies an upload to create missing directories on
770 switch(va_arg(param, long)) {
772 data->set.ftp_create_missing_dirs = 0;
775 data->set.ftp_create_missing_dirs = 1;
778 data->set.ftp_create_missing_dirs = 2;
781 /* reserve other values for future use */
782 result = CURLE_UNKNOWN_OPTION;
786 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
788 * Option that specifies how quickly an server response must be obtained
789 * before it is considered failure. For pingpong protocols.
791 data->set.server_response_timeout = va_arg( param , long ) * 1000;
793 case CURLOPT_TFTP_BLKSIZE:
795 * TFTP option that specifies the block size to use for data transmission
797 data->set.tftp_blksize = va_arg(param, long);
799 case CURLOPT_DIRLISTONLY:
801 * An option that changes the command to one that asks for a list
802 * only, no file info details.
804 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
808 * We want to upload and append to an existing file.
810 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
812 case CURLOPT_FTP_FILEMETHOD:
814 * How do access files over FTP.
816 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
820 * Parse the $HOME/.netrc file
822 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
824 case CURLOPT_NETRC_FILE:
826 * Use this file instead of the $HOME/.netrc file
828 result = setstropt(&data->set.str[STRING_NETRC_FILE],
829 va_arg(param, char *));
831 case CURLOPT_TRANSFERTEXT:
833 * This option was previously named 'FTPASCII'. Renamed to work with
834 * more protocols than merely FTP.
836 * Transfer using ASCII (instead of BINARY).
838 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
840 case CURLOPT_TIMECONDITION:
842 * Set HTTP time condition. This must be one of the defines in the
843 * curl/curl.h header file.
845 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
847 case CURLOPT_TIMEVALUE:
849 * This is the value to compare with the remote document with the
850 * method set with CURLOPT_TIMECONDITION
852 data->set.timevalue = (time_t)va_arg(param, long);
854 case CURLOPT_SSLVERSION:
856 * Set explicit SSL version to try to connect with, as some SSL
857 * implementations are lame.
859 data->set.ssl.version = va_arg(param, long);
862 #ifndef CURL_DISABLE_HTTP
863 case CURLOPT_AUTOREFERER:
865 * Switch on automatic referer that gets set if curl follows locations.
867 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
870 case CURLOPT_ACCEPT_ENCODING:
872 * String to use at the value of Accept-Encoding header.
874 * If the encoding is set to "" we use an Accept-Encoding header that
875 * encompasses all the encodings we support.
876 * If the encoding is set to NULL we don't send an Accept-Encoding header
877 * and ignore an received Content-Encoding header.
880 argptr = va_arg(param, char *);
881 result = setstropt(&data->set.str[STRING_ENCODING],
882 (argptr && !*argptr)?
883 (char *) ALL_CONTENT_ENCODINGS: argptr);
886 case CURLOPT_TRANSFER_ENCODING:
887 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
890 case CURLOPT_FOLLOWLOCATION:
892 * Follow Location: header hints on a HTTP-server.
894 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
897 case CURLOPT_UNRESTRICTED_AUTH:
899 * Send authentication (user+password) when following locations, even when
902 data->set.http_disable_hostname_check_before_authentication =
903 (0 != va_arg(param, long))?TRUE:FALSE;
906 case CURLOPT_MAXREDIRS:
908 * The maximum amount of hops you allow curl to follow Location:
909 * headers. This should mostly be used to detect never-ending loops.
911 data->set.maxredirs = va_arg(param, long);
914 case CURLOPT_POSTREDIR:
917 * Set the behaviour of POST when redirecting
918 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
919 * CURL_REDIR_POST_301 - POST is kept as POST after 301
920 * CURL_REDIR_POST_302 - POST is kept as POST after 302
921 * CURL_REDIR_POST_303 - POST is kept as POST after 303
922 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
923 * other - POST is kept as POST after 301 and 302
925 int postRedir = curlx_sltosi(va_arg(param, long));
926 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
931 /* Does this option serve a purpose anymore? Yes it does, when
932 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
934 if(va_arg(param, long)) {
935 data->set.httpreq = HTTPREQ_POST;
936 data->set.opt_no_body = FALSE; /* this is implied */
939 data->set.httpreq = HTTPREQ_GET;
942 case CURLOPT_COPYPOSTFIELDS:
944 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
945 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
946 * CURLOPT_COPYPOSTFIELDS and not altered later.
948 argptr = va_arg(param, char *);
950 if(!argptr || data->set.postfieldsize == -1)
951 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
954 * Check that requested length does not overflow the size_t type.
957 if((data->set.postfieldsize < 0) ||
958 ((sizeof(curl_off_t) != sizeof(size_t)) &&
959 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
960 result = CURLE_OUT_OF_MEMORY;
964 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
966 /* Allocate even when size == 0. This satisfies the need of possible
967 later address compare to detect the COPYPOSTFIELDS mode, and
968 to mark that postfields is used rather than read function or
971 p = malloc((size_t)(data->set.postfieldsize?
972 data->set.postfieldsize:1));
975 result = CURLE_OUT_OF_MEMORY;
977 if(data->set.postfieldsize)
978 memcpy(p, argptr, (size_t)data->set.postfieldsize);
980 data->set.str[STRING_COPYPOSTFIELDS] = p;
985 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
986 data->set.httpreq = HTTPREQ_POST;
989 case CURLOPT_POSTFIELDS:
991 * Like above, but use static data instead of copying it.
993 data->set.postfields = va_arg(param, void *);
994 /* Release old copied data. */
995 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
996 data->set.httpreq = HTTPREQ_POST;
999 case CURLOPT_POSTFIELDSIZE:
1001 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1002 * figure it out. Enables binary posts.
1004 bigsize = va_arg(param, long);
1006 if(data->set.postfieldsize < bigsize &&
1007 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1008 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1009 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1010 data->set.postfields = NULL;
1013 data->set.postfieldsize = bigsize;
1016 case CURLOPT_POSTFIELDSIZE_LARGE:
1018 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1019 * figure it out. Enables binary posts.
1021 bigsize = va_arg(param, curl_off_t);
1023 if(data->set.postfieldsize < bigsize &&
1024 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1025 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1026 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1027 data->set.postfields = NULL;
1030 data->set.postfieldsize = bigsize;
1033 case CURLOPT_HTTPPOST:
1035 * Set to make us do HTTP POST
1037 data->set.httppost = va_arg(param, struct curl_httppost *);
1038 data->set.httpreq = HTTPREQ_POST_FORM;
1039 data->set.opt_no_body = FALSE; /* this is implied */
1042 case CURLOPT_REFERER:
1044 * String to set in the HTTP Referer: field.
1046 if(data->change.referer_alloc) {
1047 Curl_safefree(data->change.referer);
1048 data->change.referer_alloc = FALSE;
1050 result = setstropt(&data->set.str[STRING_SET_REFERER],
1051 va_arg(param, char *));
1052 data->change.referer = data->set.str[STRING_SET_REFERER];
1055 case CURLOPT_USERAGENT:
1057 * String to use in the HTTP User-Agent field
1059 result = setstropt(&data->set.str[STRING_USERAGENT],
1060 va_arg(param, char *));
1063 case CURLOPT_HTTPHEADER:
1065 * Set a list with HTTP headers to use (or replace internals with)
1067 data->set.headers = va_arg(param, struct curl_slist *);
1070 case CURLOPT_PROXYHEADER:
1072 * Set a list with proxy headers to use (or replace internals with)
1074 * Since CURLOPT_HTTPHEADER was the only way to set HTTP headers for a
1075 * long time we remain doing it this way until CURLOPT_PROXYHEADER is
1076 * used. As soon as this option has been used, if set to anything but
1077 * NULL, custom headers for proxies are only picked from this list.
1079 * Set this option to NULL to restore the previous behavior.
1081 data->set.proxyheaders = va_arg(param, struct curl_slist *);
1084 case CURLOPT_HEADEROPT:
1086 * Set header option.
1088 arg = va_arg(param, long);
1089 data->set.sep_headers = (arg & CURLHEADER_SEPARATE)? TRUE: FALSE;
1092 case CURLOPT_HTTP200ALIASES:
1094 * Set a list of aliases for HTTP 200 in response header
1096 data->set.http200aliases = va_arg(param, struct curl_slist *);
1099 #if !defined(CURL_DISABLE_COOKIES)
1100 case CURLOPT_COOKIE:
1102 * Cookie string to send to the remote server in the request.
1104 result = setstropt(&data->set.str[STRING_COOKIE],
1105 va_arg(param, char *));
1108 case CURLOPT_COOKIEFILE:
1110 * Set cookie file to read and parse. Can be used multiple times.
1112 argptr = (char *)va_arg(param, void *);
1114 struct curl_slist *cl;
1115 /* append the cookie file name to the list of file names, and deal with
1117 cl = curl_slist_append(data->change.cookielist, argptr);
1119 curl_slist_free_all(data->change.cookielist);
1120 data->change.cookielist = NULL;
1121 return CURLE_OUT_OF_MEMORY;
1123 data->change.cookielist = cl; /* store the list for later use */
1127 case CURLOPT_COOKIEJAR:
1129 * Set cookie file name to dump all cookies to when we're done.
1131 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1132 va_arg(param, char *));
1135 * Activate the cookie parser. This may or may not already
1138 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1139 data->set.cookiesession);
1142 case CURLOPT_COOKIESESSION:
1144 * Set this option to TRUE to start a new "cookie session". It will
1145 * prevent the forthcoming read-cookies-from-file actions to accept
1146 * cookies that are marked as being session cookies, as they belong to a
1149 * In the original Netscape cookie spec, "session cookies" are cookies
1150 * with no expire date set. RFC2109 describes the same action if no
1151 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1152 * a 'Discard' action that can enforce the discard even for cookies that
1155 * We run mostly with the original cookie spec, as hardly anyone implements
1158 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1161 case CURLOPT_COOKIELIST:
1162 argptr = va_arg(param, char *);
1167 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1169 if(Curl_raw_equal(argptr, "ALL")) {
1170 /* clear all cookies */
1171 Curl_cookie_clearall(data->cookies);
1173 else if(Curl_raw_equal(argptr, "SESS")) {
1174 /* clear session cookies */
1175 Curl_cookie_clearsess(data->cookies);
1177 else if(Curl_raw_equal(argptr, "FLUSH")) {
1178 /* flush cookies to file */
1179 Curl_flush_cookies(data, 0);
1183 /* if cookie engine was not running, activate it */
1184 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1186 argptr = strdup(argptr);
1188 result = CURLE_OUT_OF_MEMORY;
1192 if(checkprefix("Set-Cookie:", argptr))
1193 /* HTTP Header format line */
1194 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1197 /* Netscape format line */
1198 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1203 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1206 #endif /* CURL_DISABLE_COOKIES */
1208 case CURLOPT_HTTPGET:
1210 * Set to force us do HTTP GET
1212 if(va_arg(param, long)) {
1213 data->set.httpreq = HTTPREQ_GET;
1214 data->set.upload = FALSE; /* switch off upload */
1215 data->set.opt_no_body = FALSE; /* this is implied */
1219 case CURLOPT_HTTP_VERSION:
1221 * This sets a requested HTTP version to be used. The value is one of
1222 * the listed enums in curl/curl.h.
1224 arg = va_arg(param, long);
1226 if(arg == CURL_HTTP_VERSION_2_0)
1227 return CURLE_UNSUPPORTED_PROTOCOL;
1229 data->set.httpversion = arg;
1232 case CURLOPT_HTTPAUTH:
1234 * Set HTTP Authentication type BITMASK.
1239 unsigned long auth = va_arg(param, unsigned long);
1241 if(auth == CURLAUTH_NONE) {
1242 data->set.httpauth = auth;
1246 /* the DIGEST_IE bit is only used to set a special marker, for all the
1247 rest we need to handle it as normal DIGEST */
1248 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1250 if(auth & CURLAUTH_DIGEST_IE) {
1251 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1252 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1255 /* switch off bits we can't support */
1257 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1258 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1259 #elif !defined(NTLM_WB_ENABLED)
1260 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1262 #ifndef USE_HTTP_NEGOTIATE
1263 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1267 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1270 while(bitcheck < 31) {
1271 if(auth & (1UL << bitcheck++)) {
1277 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1279 data->set.httpauth = auth;
1283 case CURLOPT_EXPECT_100_TIMEOUT_MS:
1285 * Time to wait for a response to a HTTP request containing an
1286 * Expect: 100-continue header before sending the data anyway.
1288 data->set.expect_100_timeout = va_arg(param, long);
1291 #endif /* CURL_DISABLE_HTTP */
1293 case CURLOPT_CUSTOMREQUEST:
1295 * Set a custom string to use as request
1297 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1298 va_arg(param, char *));
1301 data->set.httpreq = HTTPREQ_CUSTOM;
1302 here, we continue as if we were using the already set type
1303 and this just changes the actual request keyword */
1306 #ifndef CURL_DISABLE_PROXY
1307 case CURLOPT_HTTPPROXYTUNNEL:
1309 * Tunnel operations through the proxy instead of normal proxy use
1311 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1314 case CURLOPT_PROXYPORT:
1316 * Explicitly set HTTP proxy port number.
1318 data->set.proxyport = va_arg(param, long);
1321 case CURLOPT_PROXYAUTH:
1323 * Set HTTP Authentication type BITMASK.
1328 unsigned long auth = va_arg(param, unsigned long);
1330 if(auth == CURLAUTH_NONE) {
1331 data->set.proxyauth = auth;
1335 /* the DIGEST_IE bit is only used to set a special marker, for all the
1336 rest we need to handle it as normal DIGEST */
1337 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1339 if(auth & CURLAUTH_DIGEST_IE) {
1340 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1341 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1343 /* switch off bits we can't support */
1345 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1346 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1347 #elif !defined(NTLM_WB_ENABLED)
1348 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1350 #ifndef USE_HTTP_NEGOTIATE
1351 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1355 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1358 while(bitcheck < 31) {
1359 if(auth & (1UL << bitcheck++)) {
1365 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1367 data->set.proxyauth = auth;
1373 * Set proxy server:port to use as HTTP proxy.
1375 * If the proxy is set to "" we explicitly say that we don't want to use a
1376 * proxy (even though there might be environment variables saying so).
1378 * Setting it to NULL, means no proxy but allows the environment variables
1381 result = setstropt(&data->set.str[STRING_PROXY],
1382 va_arg(param, char *));
1385 case CURLOPT_PROXYTYPE:
1387 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1389 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1392 case CURLOPT_PROXY_TRANSFER_MODE:
1394 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1396 switch (va_arg(param, long)) {
1398 data->set.proxy_transfer_mode = FALSE;
1401 data->set.proxy_transfer_mode = TRUE;
1404 /* reserve other values for future use */
1405 result = CURLE_UNKNOWN_OPTION;
1409 #endif /* CURL_DISABLE_PROXY */
1411 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1412 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1414 * Set gssapi service name
1416 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1417 va_arg(param, char *));
1420 case CURLOPT_SOCKS5_GSSAPI_NEC:
1422 * set flag for nec socks5 support
1424 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1428 case CURLOPT_WRITEHEADER:
1430 * Custom pointer to pass the header write callback function
1432 data->set.writeheader = (void *)va_arg(param, void *);
1434 case CURLOPT_ERRORBUFFER:
1436 * Error buffer provided by the caller to get the human readable
1439 data->set.errorbuffer = va_arg(param, char *);
1443 * FILE pointer to write to. Or possibly
1444 * used as argument to the write callback.
1446 data->set.out = va_arg(param, void *);
1448 case CURLOPT_FTPPORT:
1450 * Use FTP PORT, this also specifies which IP address to use
1452 result = setstropt(&data->set.str[STRING_FTPPORT],
1453 va_arg(param, char *));
1454 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1458 case CURLOPT_FTP_USE_EPRT:
1459 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1462 case CURLOPT_FTP_USE_EPSV:
1463 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1466 case CURLOPT_FTP_USE_PRET:
1467 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1470 case CURLOPT_FTP_SSL_CCC:
1471 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1474 case CURLOPT_FTP_SKIP_PASV_IP:
1476 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1477 * bypass of the IP address in PASV responses.
1479 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1482 case CURLOPT_INFILE:
1484 * FILE pointer to read the file to be uploaded from. Or possibly
1485 * used as argument to the read callback.
1487 data->set.in = va_arg(param, void *);
1489 case CURLOPT_INFILESIZE:
1491 * If known, this should inform curl about the file size of the
1492 * to-be-uploaded file.
1494 data->set.filesize = va_arg(param, long);
1496 case CURLOPT_INFILESIZE_LARGE:
1498 * If known, this should inform curl about the file size of the
1499 * to-be-uploaded file.
1501 data->set.filesize = va_arg(param, curl_off_t);
1503 case CURLOPT_LOW_SPEED_LIMIT:
1505 * The low speed limit that if transfers are below this for
1506 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1508 data->set.low_speed_limit=va_arg(param, long);
1510 case CURLOPT_MAX_SEND_SPEED_LARGE:
1512 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1513 * bytes per second the transfer is throttled..
1515 data->set.max_send_speed=va_arg(param, curl_off_t);
1517 case CURLOPT_MAX_RECV_SPEED_LARGE:
1519 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1520 * second the transfer is throttled..
1522 data->set.max_recv_speed=va_arg(param, curl_off_t);
1524 case CURLOPT_LOW_SPEED_TIME:
1526 * The low speed time that if transfers are below the set
1527 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1529 data->set.low_speed_time=va_arg(param, long);
1535 if(data->change.url_alloc) {
1536 /* the already set URL is allocated, free it first! */
1537 Curl_safefree(data->change.url);
1538 data->change.url_alloc = FALSE;
1540 result = setstropt(&data->set.str[STRING_SET_URL],
1541 va_arg(param, char *));
1542 data->change.url = data->set.str[STRING_SET_URL];
1546 * The port number to use when getting the URL
1548 data->set.use_port = va_arg(param, long);
1550 case CURLOPT_TIMEOUT:
1552 * The maximum time you allow curl to use for a single transfer
1555 data->set.timeout = va_arg(param, long) * 1000L;
1558 case CURLOPT_TIMEOUT_MS:
1559 data->set.timeout = va_arg(param, long);
1562 case CURLOPT_CONNECTTIMEOUT:
1564 * The maximum time you allow curl to use to connect.
1566 data->set.connecttimeout = va_arg(param, long) * 1000L;
1569 case CURLOPT_CONNECTTIMEOUT_MS:
1570 data->set.connecttimeout = va_arg(param, long);
1573 case CURLOPT_ACCEPTTIMEOUT_MS:
1575 * The maximum time you allow curl to wait for server connect
1577 data->set.accepttimeout = va_arg(param, long);
1580 case CURLOPT_USERPWD:
1582 * user:password to use in the operation
1584 result = setstropt_userpwd(va_arg(param, char *),
1585 &data->set.str[STRING_USERNAME],
1586 &data->set.str[STRING_PASSWORD]);
1589 case CURLOPT_USERNAME:
1591 * authentication user name to use in the operation
1593 result = setstropt(&data->set.str[STRING_USERNAME],
1594 va_arg(param, char *));
1597 case CURLOPT_PASSWORD:
1599 * authentication password to use in the operation
1601 result = setstropt(&data->set.str[STRING_PASSWORD],
1602 va_arg(param, char *));
1605 case CURLOPT_LOGIN_OPTIONS:
1607 * authentication options to use in the operation
1609 result = setstropt(&data->set.str[STRING_OPTIONS],
1610 va_arg(param, char *));
1613 case CURLOPT_XOAUTH2_BEARER:
1615 * XOAUTH2 bearer token to use in the operation
1617 result = setstropt(&data->set.str[STRING_BEARER],
1618 va_arg(param, char *));
1621 case CURLOPT_POSTQUOTE:
1623 * List of RAW FTP commands to use after a transfer
1625 data->set.postquote = va_arg(param, struct curl_slist *);
1627 case CURLOPT_PREQUOTE:
1629 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1631 data->set.prequote = va_arg(param, struct curl_slist *);
1635 * List of RAW FTP commands to use before a transfer
1637 data->set.quote = va_arg(param, struct curl_slist *);
1639 case CURLOPT_RESOLVE:
1641 * List of NAME:[address] names to populate the DNS cache with
1642 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1644 * Names added with this API will remain in the cache until explicitly
1645 * removed or the handle is cleaned up.
1647 * This API can remove any name from the DNS cache, but only entries
1648 * that aren't actually in use right now will be pruned immediately.
1650 data->set.resolve = va_arg(param, struct curl_slist *);
1651 data->change.resolve = data->set.resolve;
1653 case CURLOPT_PROGRESSFUNCTION:
1655 * Progress callback function
1657 data->set.fprogress = va_arg(param, curl_progress_callback);
1658 if(data->set.fprogress)
1659 data->progress.callback = TRUE; /* no longer internal */
1661 data->progress.callback = FALSE; /* NULL enforces internal */
1664 case CURLOPT_XFERINFOFUNCTION:
1666 * Transfer info callback function
1668 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1669 if(data->set.fxferinfo)
1670 data->progress.callback = TRUE; /* no longer internal */
1672 data->progress.callback = FALSE; /* NULL enforces internal */
1676 case CURLOPT_PROGRESSDATA:
1678 * Custom client data to pass to the progress callback
1680 data->set.progress_client = va_arg(param, void *);
1683 #ifndef CURL_DISABLE_PROXY
1684 case CURLOPT_PROXYUSERPWD:
1686 * user:password needed to use the proxy
1688 result = setstropt_userpwd(va_arg(param, char *),
1689 &data->set.str[STRING_PROXYUSERNAME],
1690 &data->set.str[STRING_PROXYPASSWORD]);
1692 case CURLOPT_PROXYUSERNAME:
1694 * authentication user name to use in the operation
1696 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1697 va_arg(param, char *));
1699 case CURLOPT_PROXYPASSWORD:
1701 * authentication password to use in the operation
1703 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1704 va_arg(param, char *));
1706 case CURLOPT_NOPROXY:
1708 * proxy exception list
1710 result = setstropt(&data->set.str[STRING_NOPROXY],
1711 va_arg(param, char *));
1717 * What range of the file you want to transfer
1719 result = setstropt(&data->set.str[STRING_SET_RANGE],
1720 va_arg(param, char *));
1722 case CURLOPT_RESUME_FROM:
1724 * Resume transfer at the give file position
1726 data->set.set_resume_from = va_arg(param, long);
1728 case CURLOPT_RESUME_FROM_LARGE:
1730 * Resume transfer at the give file position
1732 data->set.set_resume_from = va_arg(param, curl_off_t);
1734 case CURLOPT_DEBUGFUNCTION:
1736 * stderr write callback.
1738 data->set.fdebug = va_arg(param, curl_debug_callback);
1740 * if the callback provided is NULL, it'll use the default callback
1743 case CURLOPT_DEBUGDATA:
1745 * Set to a void * that should receive all error writes. This
1746 * defaults to CURLOPT_STDERR for normal operations.
1748 data->set.debugdata = va_arg(param, void *);
1750 case CURLOPT_STDERR:
1752 * Set to a FILE * that should receive all error writes. This
1753 * defaults to stderr for normal operations.
1755 data->set.err = va_arg(param, FILE *);
1757 data->set.err = stderr;
1759 case CURLOPT_HEADERFUNCTION:
1761 * Set header write callback
1763 data->set.fwrite_header = va_arg(param, curl_write_callback);
1765 case CURLOPT_WRITEFUNCTION:
1767 * Set data write callback
1769 data->set.fwrite_func = va_arg(param, curl_write_callback);
1770 if(!data->set.fwrite_func) {
1771 data->set.is_fwrite_set = 0;
1772 /* When set to NULL, reset to our internal default function */
1773 data->set.fwrite_func = (curl_write_callback)fwrite;
1776 data->set.is_fwrite_set = 1;
1778 case CURLOPT_READFUNCTION:
1780 * Read data callback
1782 data->set.fread_func = va_arg(param, curl_read_callback);
1783 if(!data->set.fread_func) {
1784 data->set.is_fread_set = 0;
1785 /* When set to NULL, reset to our internal default function */
1786 data->set.fread_func = (curl_read_callback)fread;
1789 data->set.is_fread_set = 1;
1791 case CURLOPT_SEEKFUNCTION:
1793 * Seek callback. Might be NULL.
1795 data->set.seek_func = va_arg(param, curl_seek_callback);
1797 case CURLOPT_SEEKDATA:
1799 * Seek control callback. Might be NULL.
1801 data->set.seek_client = va_arg(param, void *);
1803 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1805 * "Convert from network encoding" callback
1807 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1809 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1811 * "Convert to network encoding" callback
1813 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1815 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1817 * "Convert from UTF-8 encoding" callback
1819 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1821 case CURLOPT_IOCTLFUNCTION:
1823 * I/O control callback. Might be NULL.
1825 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1827 case CURLOPT_IOCTLDATA:
1829 * I/O control data pointer. Might be NULL.
1831 data->set.ioctl_client = va_arg(param, void *);
1833 case CURLOPT_SSLCERT:
1835 * String that holds file name of the SSL certificate to use
1837 result = setstropt(&data->set.str[STRING_CERT],
1838 va_arg(param, char *));
1840 case CURLOPT_SSLCERTTYPE:
1842 * String that holds file type of the SSL certificate to use
1844 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1845 va_arg(param, char *));
1847 case CURLOPT_SSLKEY:
1849 * String that holds file name of the SSL key to use
1851 result = setstropt(&data->set.str[STRING_KEY],
1852 va_arg(param, char *));
1854 case CURLOPT_SSLKEYTYPE:
1856 * String that holds file type of the SSL key to use
1858 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1859 va_arg(param, char *));
1861 case CURLOPT_KEYPASSWD:
1863 * String that holds the SSL or SSH private key password.
1865 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1866 va_arg(param, char *));
1868 case CURLOPT_SSLENGINE:
1870 * String that holds the SSL crypto engine.
1872 argptr = va_arg(param, char *);
1873 if(argptr && argptr[0])
1874 result = Curl_ssl_set_engine(data, argptr);
1877 case CURLOPT_SSLENGINE_DEFAULT:
1879 * flag to set engine as default.
1881 result = Curl_ssl_set_engine_default(data);
1885 * Kludgy option to enable CRLF conversions. Subject for removal.
1887 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1890 case CURLOPT_INTERFACE:
1892 * Set what interface or address/hostname to bind the socket to when
1893 * performing an operation and thus what from-IP your connection will use.
1895 result = setstropt(&data->set.str[STRING_DEVICE],
1896 va_arg(param, char *));
1898 case CURLOPT_LOCALPORT:
1900 * Set what local port to bind the socket to when performing an operation.
1902 data->set.localport = curlx_sltous(va_arg(param, long));
1904 case CURLOPT_LOCALPORTRANGE:
1906 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1908 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1910 case CURLOPT_KRBLEVEL:
1912 * A string that defines the kerberos security level.
1914 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1915 va_arg(param, char *));
1916 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1918 case CURLOPT_GSSAPI_DELEGATION:
1920 * GSSAPI credential delegation
1922 data->set.gssapi_delegation = va_arg(param, long);
1924 case CURLOPT_SSL_VERIFYPEER:
1926 * Enable peer SSL verifying.
1928 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1930 case CURLOPT_SSL_VERIFYHOST:
1932 * Enable verification of the host name in the peer certificate
1934 arg = va_arg(param, long);
1936 /* Obviously people are not reading documentation and too many thought
1937 this argument took a boolean when it wasn't and misused it. We thus ban
1938 1 as a sensible input and we warn about its use. Then we only have the
1939 2 action internally stored as TRUE. */
1942 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1943 return CURLE_BAD_FUNCTION_ARGUMENT;
1946 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1949 /* since these two options are only possible to use on an OpenSSL-
1950 powered libcurl we #ifdef them on this condition so that libcurls
1951 built against other SSL libs will return a proper error when trying
1952 to set this option! */
1953 case CURLOPT_SSL_CTX_FUNCTION:
1955 * Set a SSL_CTX callback
1957 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1959 case CURLOPT_SSL_CTX_DATA:
1961 * Set a SSL_CTX callback parameter pointer
1963 data->set.ssl.fsslctxp = va_arg(param, void *);
1966 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1968 case CURLOPT_CERTINFO:
1969 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1972 case CURLOPT_CAINFO:
1974 * Set CA info for SSL connection. Specify file name of the CA certificate
1976 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1977 va_arg(param, char *));
1979 case CURLOPT_CAPATH:
1981 * Set CA path info for SSL connection. Specify directory name of the CA
1982 * certificates which have been prepared using openssl c_rehash utility.
1984 /* This does not work on windows. */
1985 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1986 va_arg(param, char *));
1988 case CURLOPT_CRLFILE:
1990 * Set CRL file info for SSL connection. Specify file name of the CRL
1991 * to check certificates revocation
1993 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1994 va_arg(param, char *));
1996 case CURLOPT_ISSUERCERT:
1998 * Set Issuer certificate file
1999 * to check certificates issuer
2001 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
2002 va_arg(param, char *));
2004 case CURLOPT_TELNETOPTIONS:
2006 * Set a linked list of telnet options
2008 data->set.telnet_options = va_arg(param, struct curl_slist *);
2011 case CURLOPT_BUFFERSIZE:
2013 * The application kindly asks for a differently sized receive buffer.
2014 * If it seems reasonable, we'll use it.
2016 data->set.buffer_size = va_arg(param, long);
2018 if((data->set.buffer_size> (BUFSIZE -1 )) ||
2019 (data->set.buffer_size < 1))
2020 data->set.buffer_size = 0; /* huge internal default */
2024 case CURLOPT_NOSIGNAL:
2026 * The application asks not to set any signal() or alarm() handlers,
2027 * even when using a timeout.
2029 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2034 struct Curl_share *set;
2035 set = va_arg(param, struct Curl_share *);
2037 /* disconnect from old share, if any */
2039 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2041 if(data->dns.hostcachetype == HCACHE_SHARED) {
2042 data->dns.hostcache = NULL;
2043 data->dns.hostcachetype = HCACHE_NONE;
2046 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2047 if(data->share->cookies == data->cookies)
2048 data->cookies = NULL;
2051 if(data->share->sslsession == data->state.session)
2052 data->state.session = NULL;
2054 data->share->dirty--;
2056 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2060 /* use new share if it set */
2064 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2066 data->share->dirty++;
2068 if(data->share->hostcache) {
2069 /* use shared host cache */
2070 data->dns.hostcache = data->share->hostcache;
2071 data->dns.hostcachetype = HCACHE_SHARED;
2073 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2074 if(data->share->cookies) {
2075 /* use shared cookie list, first free own one if any */
2077 Curl_cookie_cleanup(data->cookies);
2078 /* enable cookies since we now use a share that uses cookies! */
2079 data->cookies = data->share->cookies;
2081 #endif /* CURL_DISABLE_HTTP */
2082 if(data->share->sslsession) {
2083 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2084 data->state.session = data->share->sslsession;
2086 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2089 /* check for host cache not needed,
2090 * it will be done by curl_easy_perform */
2094 case CURLOPT_PRIVATE:
2096 * Set private data pointer.
2098 data->set.private_data = va_arg(param, void *);
2101 case CURLOPT_MAXFILESIZE:
2103 * Set the maximum size of a file to download.
2105 data->set.max_filesize = va_arg(param, long);
2109 case CURLOPT_USE_SSL:
2111 * Make transfers attempt to use SSL/TLS.
2113 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2116 case CURLOPT_SSL_OPTIONS:
2117 arg = va_arg(param, long);
2118 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2122 case CURLOPT_FTPSSLAUTH:
2124 * Set a specific auth for FTP-SSL transfers.
2126 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2129 case CURLOPT_IPRESOLVE:
2130 data->set.ipver = va_arg(param, long);
2133 case CURLOPT_MAXFILESIZE_LARGE:
2135 * Set the maximum size of a file to download.
2137 data->set.max_filesize = va_arg(param, curl_off_t);
2140 case CURLOPT_TCP_NODELAY:
2142 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2145 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2148 case CURLOPT_FTP_ACCOUNT:
2149 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2150 va_arg(param, char *));
2153 case CURLOPT_IGNORE_CONTENT_LENGTH:
2154 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2157 case CURLOPT_CONNECT_ONLY:
2159 * No data transfer, set up connection and let application use the socket
2161 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2164 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2165 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2166 va_arg(param, char *));
2169 case CURLOPT_SOCKOPTFUNCTION:
2171 * socket callback function: called after socket() but before connect()
2173 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2176 case CURLOPT_SOCKOPTDATA:
2178 * socket callback data pointer. Might be NULL.
2180 data->set.sockopt_client = va_arg(param, void *);
2183 case CURLOPT_OPENSOCKETFUNCTION:
2185 * open/create socket callback function: called instead of socket(),
2188 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2191 case CURLOPT_OPENSOCKETDATA:
2193 * socket callback data pointer. Might be NULL.
2195 data->set.opensocket_client = va_arg(param, void *);
2198 case CURLOPT_CLOSESOCKETFUNCTION:
2200 * close socket callback function: called instead of close()
2201 * when shutting down a connection
2203 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2206 case CURLOPT_CLOSESOCKETDATA:
2208 * socket callback data pointer. Might be NULL.
2210 data->set.closesocket_client = va_arg(param, void *);
2213 case CURLOPT_SSL_SESSIONID_CACHE:
2214 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2218 /* we only include SSH options if explicitly built to support SSH */
2219 case CURLOPT_SSH_AUTH_TYPES:
2220 data->set.ssh_auth_types = va_arg(param, long);
2223 case CURLOPT_SSH_PUBLIC_KEYFILE:
2225 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2227 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2228 va_arg(param, char *));
2231 case CURLOPT_SSH_PRIVATE_KEYFILE:
2233 * Use this file instead of the $HOME/.ssh/id_dsa file
2235 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2236 va_arg(param, char *));
2238 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2240 * Option to allow for the MD5 of the host public key to be checked
2241 * for validation purposes.
2243 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2244 va_arg(param, char *));
2246 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2247 case CURLOPT_SSH_KNOWNHOSTS:
2249 * Store the file name to read known hosts from.
2251 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2252 va_arg(param, char *));
2255 case CURLOPT_SSH_KEYFUNCTION:
2256 /* setting to NULL is fine since the ssh.c functions themselves will
2257 then rever to use the internal default */
2258 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2261 case CURLOPT_SSH_KEYDATA:
2263 * Custom client data to pass to the SSH keyfunc callback
2265 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2267 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2269 #endif /* USE_LIBSSH2 */
2271 case CURLOPT_HTTP_TRANSFER_DECODING:
2273 * disable libcurl transfer encoding is used
2275 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2278 case CURLOPT_HTTP_CONTENT_DECODING:
2280 * raw data passed to the application when content encoding is used
2282 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2285 case CURLOPT_NEW_FILE_PERMS:
2287 * Uses these permissions instead of 0644
2289 data->set.new_file_perms = va_arg(param, long);
2292 case CURLOPT_NEW_DIRECTORY_PERMS:
2294 * Uses these permissions instead of 0755
2296 data->set.new_directory_perms = va_arg(param, long);
2299 case CURLOPT_ADDRESS_SCOPE:
2301 * We always get longs when passed plain numericals, but for this value we
2302 * know that an unsigned int will always hold the value so we blindly
2303 * typecast to this type
2305 data->set.scope = curlx_sltoui(va_arg(param, long));
2308 case CURLOPT_PROTOCOLS:
2309 /* set the bitmask for the protocols that are allowed to be used for the
2310 transfer, which thus helps the app which takes URLs from users or other
2311 external inputs and want to restrict what protocol(s) to deal
2312 with. Defaults to CURLPROTO_ALL. */
2313 data->set.allowed_protocols = va_arg(param, long);
2316 case CURLOPT_REDIR_PROTOCOLS:
2317 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2318 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2319 to be set in both bitmasks to be allowed to get redirected to. Defaults
2320 to all protocols except FILE and SCP. */
2321 data->set.redir_protocols = va_arg(param, long);
2324 case CURLOPT_MAIL_FROM:
2325 /* Set the SMTP mail originator */
2326 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2327 va_arg(param, char *));
2330 case CURLOPT_MAIL_AUTH:
2331 /* Set the SMTP auth originator */
2332 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2333 va_arg(param, char *));
2336 case CURLOPT_MAIL_RCPT:
2337 /* Set the list of mail recipients */
2338 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2341 case CURLOPT_SASL_IR:
2342 /* Enable/disable SASL initial response */
2343 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2346 case CURLOPT_RTSP_REQUEST:
2349 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2350 * Would this be better if the RTSPREQ_* were just moved into here?
2352 long curl_rtspreq = va_arg(param, long);
2353 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2354 switch(curl_rtspreq) {
2355 case CURL_RTSPREQ_OPTIONS:
2356 rtspreq = RTSPREQ_OPTIONS;
2359 case CURL_RTSPREQ_DESCRIBE:
2360 rtspreq = RTSPREQ_DESCRIBE;
2363 case CURL_RTSPREQ_ANNOUNCE:
2364 rtspreq = RTSPREQ_ANNOUNCE;
2367 case CURL_RTSPREQ_SETUP:
2368 rtspreq = RTSPREQ_SETUP;
2371 case CURL_RTSPREQ_PLAY:
2372 rtspreq = RTSPREQ_PLAY;
2375 case CURL_RTSPREQ_PAUSE:
2376 rtspreq = RTSPREQ_PAUSE;
2379 case CURL_RTSPREQ_TEARDOWN:
2380 rtspreq = RTSPREQ_TEARDOWN;
2383 case CURL_RTSPREQ_GET_PARAMETER:
2384 rtspreq = RTSPREQ_GET_PARAMETER;
2387 case CURL_RTSPREQ_SET_PARAMETER:
2388 rtspreq = RTSPREQ_SET_PARAMETER;
2391 case CURL_RTSPREQ_RECORD:
2392 rtspreq = RTSPREQ_RECORD;
2395 case CURL_RTSPREQ_RECEIVE:
2396 rtspreq = RTSPREQ_RECEIVE;
2399 rtspreq = RTSPREQ_NONE;
2402 data->set.rtspreq = rtspreq;
2407 case CURLOPT_RTSP_SESSION_ID:
2409 * Set the RTSP Session ID manually. Useful if the application is
2410 * resuming a previously established RTSP session
2412 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2413 va_arg(param, char *));
2416 case CURLOPT_RTSP_STREAM_URI:
2418 * Set the Stream URI for the RTSP request. Unless the request is
2419 * for generic server options, the application will need to set this.
2421 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2422 va_arg(param, char *));
2425 case CURLOPT_RTSP_TRANSPORT:
2427 * The content of the Transport: header for the RTSP request
2429 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2430 va_arg(param, char *));
2433 case CURLOPT_RTSP_CLIENT_CSEQ:
2435 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2436 * application is resuming a previously broken connection. The CSEQ
2437 * will increment from this new number henceforth.
2439 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2442 case CURLOPT_RTSP_SERVER_CSEQ:
2443 /* Same as the above, but for server-initiated requests */
2444 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2447 case CURLOPT_INTERLEAVEDATA:
2448 data->set.rtp_out = va_arg(param, void *);
2450 case CURLOPT_INTERLEAVEFUNCTION:
2451 /* Set the user defined RTP write function */
2452 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2455 case CURLOPT_WILDCARDMATCH:
2456 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2458 case CURLOPT_CHUNK_BGN_FUNCTION:
2459 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2461 case CURLOPT_CHUNK_END_FUNCTION:
2462 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2464 case CURLOPT_FNMATCH_FUNCTION:
2465 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2467 case CURLOPT_CHUNK_DATA:
2468 data->wildcard.customptr = va_arg(param, void *);
2470 case CURLOPT_FNMATCH_DATA:
2471 data->set.fnmatch_data = va_arg(param, void *);
2474 case CURLOPT_TLSAUTH_USERNAME:
2475 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2476 va_arg(param, char *));
2477 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2478 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2480 case CURLOPT_TLSAUTH_PASSWORD:
2481 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2482 va_arg(param, char *));
2483 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2484 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2486 case CURLOPT_TLSAUTH_TYPE:
2487 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2488 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2490 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2493 case CURLOPT_DNS_SERVERS:
2494 result = Curl_set_dns_servers(data, va_arg(param, char *));
2496 case CURLOPT_DNS_INTERFACE:
2497 result = Curl_set_dns_interface(data, va_arg(param, char *));
2499 case CURLOPT_DNS_LOCAL_IP4:
2500 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2502 case CURLOPT_DNS_LOCAL_IP6:
2503 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2506 case CURLOPT_TCP_KEEPALIVE:
2507 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2509 case CURLOPT_TCP_KEEPIDLE:
2510 data->set.tcp_keepidle = va_arg(param, long);
2512 case CURLOPT_TCP_KEEPINTVL:
2513 data->set.tcp_keepintvl = va_arg(param, long);
2515 case CURLOPT_SSL_ENABLE_NPN:
2516 data->set.ssl_enable_npn = (0 != va_arg(param, long))?TRUE:FALSE;
2518 case CURLOPT_SSL_ENABLE_ALPN:
2519 data->set.ssl_enable_alpn = (0 != va_arg(param, long))?TRUE:FALSE;
2523 /* unknown tag and its companion, just ignore: */
2524 result = CURLE_UNKNOWN_OPTION;
2531 static void conn_free(struct connectdata *conn)
2536 /* possible left-overs from the async name resolvers */
2537 Curl_resolver_cancel(conn);
2539 /* close the SSL stuff before we close any sockets since they will/may
2540 write to the sockets */
2541 Curl_ssl_close(conn, FIRSTSOCKET);
2542 Curl_ssl_close(conn, SECONDARYSOCKET);
2544 /* close possibly still open sockets */
2545 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2546 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2547 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2548 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2549 if(CURL_SOCKET_BAD != conn->tempsock[0])
2550 Curl_closesocket(conn, conn->tempsock[0]);
2551 if(CURL_SOCKET_BAD != conn->tempsock[1])
2552 Curl_closesocket(conn, conn->tempsock[1]);
2554 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2555 Curl_ntlm_wb_cleanup(conn);
2558 Curl_safefree(conn->user);
2559 Curl_safefree(conn->passwd);
2560 Curl_safefree(conn->xoauth2_bearer);
2561 Curl_safefree(conn->options);
2562 Curl_safefree(conn->proxyuser);
2563 Curl_safefree(conn->proxypasswd);
2564 Curl_safefree(conn->allocptr.proxyuserpwd);
2565 Curl_safefree(conn->allocptr.uagent);
2566 Curl_safefree(conn->allocptr.userpwd);
2567 Curl_safefree(conn->allocptr.accept_encoding);
2568 Curl_safefree(conn->allocptr.te);
2569 Curl_safefree(conn->allocptr.rangeline);
2570 Curl_safefree(conn->allocptr.ref);
2571 Curl_safefree(conn->allocptr.host);
2572 Curl_safefree(conn->allocptr.cookiehost);
2573 Curl_safefree(conn->allocptr.rtsp_transport);
2574 Curl_safefree(conn->trailer);
2575 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2576 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2577 Curl_safefree(conn->master_buffer);
2579 Curl_llist_destroy(conn->send_pipe, NULL);
2580 Curl_llist_destroy(conn->recv_pipe, NULL);
2582 conn->send_pipe = NULL;
2583 conn->recv_pipe = NULL;
2585 Curl_safefree(conn->localdev);
2586 Curl_free_ssl_config(&conn->ssl_config);
2588 free(conn); /* free all the connection oriented data */
2591 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2593 struct SessionHandle *data;
2595 return CURLE_OK; /* this is closed and fine already */
2599 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2603 if(conn->dns_entry != NULL) {
2604 Curl_resolv_unlock(data, conn->dns_entry);
2605 conn->dns_entry = NULL;
2608 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2611 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2612 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2614 /* Authentication data is a mix of connection-related and sessionhandle-
2615 related stuff. NTLM is connection-related so when we close the shop
2619 data->state.authhost.done = FALSE;
2620 data->state.authhost.picked =
2621 data->state.authhost.want;
2624 if(has_proxy_ntlm) {
2625 data->state.authproxy.done = FALSE;
2626 data->state.authproxy.picked =
2627 data->state.authproxy.want;
2630 if(has_host_ntlm || has_proxy_ntlm)
2631 data->state.authproblem = FALSE;
2634 /* Cleanup NTLM connection-related data */
2635 Curl_http_ntlm_cleanup(conn);
2637 /* Cleanup possible redirect junk */
2638 if(data->req.newurl) {
2639 free(data->req.newurl);
2640 data->req.newurl = NULL;
2643 if(conn->handler->disconnect)
2644 /* This is set if protocol-specific cleanups should be made */
2645 conn->handler->disconnect(conn, dead_connection);
2647 /* unlink ourselves! */
2648 infof(data, "Closing connection %ld\n", conn->connection_id);
2649 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2651 #if defined(USE_LIBIDN)
2652 if(conn->host.encalloc)
2653 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2654 with idn_free() since this was allocated
2656 if(conn->proxy.encalloc)
2657 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2658 freed with idn_free() since this was
2659 allocated by libidn */
2660 #elif defined(USE_WIN32_IDN)
2661 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2662 idn_free() since this was allocated by
2663 curl_win32_idn_to_ascii */
2664 if(conn->proxy.encalloc)
2665 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2666 with idn_free() since this was allocated by
2667 curl_win32_idn_to_ascii */
2670 Curl_ssl_close(conn, FIRSTSOCKET);
2672 /* Indicate to all handles on the pipe that we're dead */
2673 if(Curl_multi_pipeline_enabled(data->multi)) {
2674 signalPipeClose(conn->send_pipe, TRUE);
2675 signalPipeClose(conn->recv_pipe, TRUE);
2680 Curl_speedinit(data);
2686 * This function should return TRUE if the socket is to be assumed to
2687 * be dead. Most commonly this happens when the server has closed the
2688 * connection due to inactivity.
2690 static bool SocketIsDead(curl_socket_t sock)
2693 bool ret_val = TRUE;
2695 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2703 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2704 const struct connectdata *conn)
2706 if((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
2707 Curl_multi_pipeline_enabled(handle->multi) &&
2708 (handle->set.httpreq == HTTPREQ_GET ||
2709 handle->set.httpreq == HTTPREQ_HEAD) &&
2710 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2716 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2718 return Curl_multi_pipeline_enabled(handle->multi);
2721 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2722 struct curl_llist *pipeline)
2724 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2725 return CURLE_OUT_OF_MEMORY;
2729 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2730 struct curl_llist *pipeline)
2732 struct curl_llist_element *curr;
2734 curr = pipeline->head;
2736 if(curr->ptr == handle) {
2737 Curl_llist_remove(pipeline, curr, NULL);
2738 return 1; /* we removed a handle */
2746 #if 0 /* this code is saved here as it is useful for debugging purposes */
2747 static void Curl_printPipeline(struct curl_llist *pipeline)
2749 struct curl_llist_element *curr;
2751 curr = pipeline->head;
2753 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2754 infof(data, "Handle in pipeline: %s\n", data->state.path);
2760 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2762 struct curl_llist_element *curr = pipeline->head;
2764 return (struct SessionHandle *) curr->ptr;
2770 /* remove the specified connection from all (possible) pipelines and related
2772 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2773 struct connectdata *conn)
2775 bool recv_head = (conn->readchannel_inuse &&
2776 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2778 bool send_head = (conn->writechannel_inuse &&
2779 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2781 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2782 conn->readchannel_inuse = FALSE;
2783 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2784 conn->writechannel_inuse = FALSE;
2787 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2789 struct curl_llist_element *curr;
2794 curr = pipeline->head;
2796 struct curl_llist_element *next = curr->next;
2797 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2799 #ifdef DEBUGBUILD /* debug-only code */
2800 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2802 infof(data, "signalPipeClose() found BAAD easy handle\n");
2807 data->state.pipe_broke = TRUE;
2808 Curl_multi_handlePipeBreak(data);
2809 Curl_llist_remove(pipeline, curr, NULL);
2815 * This function finds the connection in the connection
2816 * cache that has been unused for the longest time.
2818 * Returns the pointer to the oldest idle connection, or NULL if none was
2821 static struct connectdata *
2822 find_oldest_idle_connection(struct SessionHandle *data)
2824 struct conncache *bc = data->state.conn_cache;
2825 struct curl_hash_iterator iter;
2826 struct curl_llist_element *curr;
2827 struct curl_hash_element *he;
2831 struct connectdata *conn_candidate = NULL;
2832 struct connectbundle *bundle;
2836 Curl_hash_start_iterate(bc->hash, &iter);
2838 he = Curl_hash_next_element(&iter);
2840 struct connectdata *conn;
2844 curr = bundle->conn_list->head;
2849 /* Set higher score for the age passed since the connection was used */
2850 score = Curl_tvdiff(now, conn->now);
2852 if(score > highscore) {
2854 conn_candidate = conn;
2860 he = Curl_hash_next_element(&iter);
2863 return conn_candidate;
2867 * This function finds the connection in the connection
2868 * bundle that has been unused for the longest time.
2870 * Returns the pointer to the oldest idle connection, or NULL if none was
2873 static struct connectdata *
2874 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2875 struct connectbundle *bundle)
2877 struct curl_llist_element *curr;
2881 struct connectdata *conn_candidate = NULL;
2882 struct connectdata *conn;
2888 curr = bundle->conn_list->head;
2893 /* Set higher score for the age passed since the connection was used */
2894 score = Curl_tvdiff(now, conn->now);
2896 if(score > highscore) {
2898 conn_candidate = conn;
2904 return conn_candidate;
2908 * Given one filled in connection struct (named needle), this function should
2909 * detect if there already is one that has all the significant details
2910 * exactly the same and thus should be used instead.
2912 * If there is a match, this function returns TRUE - and has marked the
2913 * connection as 'in-use'. It must later be called with ConnectionDone() to
2914 * return back to 'idle' (unused) state.
2916 * The force_reuse flag is set if the connection must be used, even if
2917 * the pipelining strategy wants to open a new connection instead of reusing.
2920 ConnectionExists(struct SessionHandle *data,
2921 struct connectdata *needle,
2922 struct connectdata **usethis,
2925 struct connectdata *check;
2926 struct connectdata *chosen = 0;
2927 bool canPipeline = IsPipeliningPossible(data, needle);
2928 bool wantNTLMhttp = ((data->state.authhost.want & CURLAUTH_NTLM) ||
2929 (data->state.authhost.want & CURLAUTH_NTLM_WB)) &&
2930 (needle->handler->protocol & PROTO_FAMILY_HTTP) ? TRUE : FALSE;
2931 struct connectbundle *bundle;
2933 *force_reuse = FALSE;
2935 /* We can't pipe if the site is blacklisted */
2936 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2937 canPipeline = FALSE;
2940 /* Look up the bundle with all the connections to this
2942 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2945 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2946 size_t best_pipe_len = max_pipe_len;
2947 struct curl_llist_element *curr;
2949 infof(data, "Found bundle for host %s: %p\n",
2950 needle->host.name, (void *)bundle);
2952 /* We can't pipe if we don't know anything about the server */
2953 if(canPipeline && !bundle->server_supports_pipelining) {
2954 infof(data, "Server doesn't support pipelining\n");
2955 canPipeline = FALSE;
2958 curr = bundle->conn_list->head;
2961 bool credentialsMatch = FALSE;
2965 * Note that if we use a HTTP proxy, we check connections to that
2966 * proxy and not to the actual remote server.
2971 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2973 if(!pipeLen && !check->inuse) {
2974 /* The check for a dead socket makes sense only if there are no
2975 handles in pipeline and the connection isn't already marked in
2978 if(check->handler->protocol & CURLPROTO_RTSP)
2979 /* RTSP is a special case due to RTP interleaving */
2980 dead = Curl_rtsp_connisdead(check);
2982 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2986 infof(data, "Connection %ld seems to be dead!\n",
2987 check->connection_id);
2989 /* disconnect resources */
2990 Curl_disconnect(check, /* dead_connection */ TRUE);
2996 /* Make sure the pipe has only GET requests */
2997 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2998 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
3000 if(!IsPipeliningPossible(sh, check))
3004 if(!IsPipeliningPossible(rh, check))
3010 /* can only happen within multi handles, and means that another easy
3011 handle is using this connection */
3015 if(Curl_resolver_asynch()) {
3016 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
3017 completed yet and until then we don't re-use this connection */
3018 if(!check->ip_addr_str[0]) {
3020 "Connection #%ld is still name resolving, can't reuse\n",
3021 check->connection_id);
3026 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
3027 check->bits.close) {
3028 /* Don't pick a connection that hasn't connected yet or that is going
3030 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
3031 check->connection_id);
3033 if(check->recv_pipe->size > 0) {
3035 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3036 check->connection_id);
3043 if((needle->handler->flags&PROTOPT_SSL) !=
3044 (check->handler->flags&PROTOPT_SSL))
3045 /* don't do mixed SSL and non-SSL connections */
3046 if(!(needle->handler->protocol & check->handler->protocol))
3047 /* except protocols that have been upgraded via TLS */
3050 if(needle->handler->flags&PROTOPT_SSL) {
3051 if((data->set.ssl.verifypeer != check->verifypeer) ||
3052 (data->set.ssl.verifyhost != check->verifyhost))
3056 if(needle->bits.proxy != check->bits.proxy)
3057 /* don't do mixed proxy and non-proxy connections */
3060 if(!canPipeline && check->inuse)
3061 /* this request can't be pipelined but the checked connection is
3062 already in use so we skip it */
3065 if(needle->localdev || needle->localport) {
3066 /* If we are bound to a specific local end (IP+port), we must not
3067 re-use a random other one, although if we didn't ask for a
3068 particular one we can reuse one that was bound.
3070 This comparison is a bit rough and too strict. Since the input
3071 parameters can be specified in numerous ways and still end up the
3072 same it would take a lot of processing to make it really accurate.
3073 Instead, this matching will assume that re-uses of bound connections
3074 will most likely also re-use the exact same binding parameters and
3075 missing out a few edge cases shouldn't hurt anyone very much.
3077 if((check->localport != needle->localport) ||
3078 (check->localportrange != needle->localportrange) ||
3080 !needle->localdev ||
3081 strcmp(check->localdev, needle->localdev))
3085 if((!(needle->handler->flags & PROTOPT_CREDSPERREQUEST)) ||
3087 /* This protocol requires credentials per connection or is HTTP+NTLM,
3088 so verify that we're using the same name and password as well */
3089 if(!strequal(needle->user, check->user) ||
3090 !strequal(needle->passwd, check->passwd)) {
3091 /* one of them was different */
3094 credentialsMatch = TRUE;
3097 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3098 (needle->bits.httpproxy && check->bits.httpproxy &&
3099 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3100 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3101 (needle->port == check->port))) {
3102 /* The requested connection does not use a HTTP proxy or it uses SSL or
3103 it is a non-SSL protocol tunneled over the same http proxy name and
3104 port number or it is a non-SSL protocol which is allowed to be
3107 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3108 needle->handler->protocol & check->handler->protocol) &&
3109 Curl_raw_equal(needle->host.name, check->host.name) &&
3110 needle->remote_port == check->remote_port) {
3111 if(needle->handler->flags & PROTOPT_SSL) {
3112 /* This is a SSL connection so verify that we're using the same
3113 SSL options as well */
3114 if(!Curl_ssl_config_matches(&needle->ssl_config,
3115 &check->ssl_config)) {
3117 "Connection #%ld has different SSL parameters, "
3119 check->connection_id));
3122 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3124 "Connection #%ld has not started SSL connect, "
3126 check->connection_id));
3133 else { /* The requested needle connection is using a proxy,
3134 is the checked one using the same host, port and type? */
3135 if(check->bits.proxy &&
3136 (needle->proxytype == check->proxytype) &&
3137 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3138 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3139 needle->port == check->port) {
3140 /* This is the same proxy connection, use it! */
3146 /* If we are looking for an HTTP+NTLM connection, check if this is
3147 already authenticating with the right credentials. If not, keep
3148 looking so that we can reuse NTLM connections if
3149 possible. (Especially we must not reuse the same connection if
3150 partway through a handshake!) */
3152 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3155 /* We must use this connection, no other */
3156 *force_reuse = TRUE;
3159 else if(credentialsMatch)
3160 /* this is a backup choice */
3166 /* We can pipeline if we want to. Let's continue looking for
3167 the optimal connection to use, i.e the shortest pipe that is not
3171 /* We have the optimal connection. Let's stop looking. */
3176 /* We can't use the connection if the pipe is full */
3177 if(pipeLen >= max_pipe_len)
3180 /* We can't use the connection if the pipe is penalized */
3181 if(Curl_pipeline_penalized(data, check))
3184 if(pipeLen < best_pipe_len) {
3185 /* This connection has a shorter pipe so far. We'll pick this
3186 and continue searching */
3188 best_pipe_len = pipeLen;
3193 /* We have found a connection. Let's stop searching. */
3203 return TRUE; /* yes, we found one to use! */
3206 return FALSE; /* no matching connecting exists */
3209 /* Mark the connection as 'idle', or close it if the cache is full.
3210 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3212 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3214 /* data->multi->maxconnects can be negative, deal with it. */
3215 size_t maxconnects =
3216 (data->multi->maxconnects < 0) ? data->multi->num_easy * 4:
3217 data->multi->maxconnects;
3218 struct connectdata *conn_candidate = NULL;
3220 /* Mark the current connection as 'unused' */
3221 conn->inuse = FALSE;
3223 if(maxconnects > 0 &&
3224 data->state.conn_cache->num_connections > maxconnects) {
3225 infof(data, "Connection cache is full, closing the oldest one.\n");
3227 conn_candidate = find_oldest_idle_connection(data);
3229 if(conn_candidate) {
3230 /* Set the connection's owner correctly */
3231 conn_candidate->data = data;
3233 /* the winner gets the honour of being disconnected */
3234 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3238 return (conn_candidate == conn) ? FALSE : TRUE;
3242 * The given input connection struct pointer is to be stored in the connection
3243 * cache. If the cache is already full, least interesting existing connection
3244 * (if any) gets closed.
3246 * The given connection should be unique. That must've been checked prior to
3249 static CURLcode ConnectionStore(struct SessionHandle *data,
3250 struct connectdata *conn)
3252 static int connection_id_counter = 0;
3256 /* Assign a number to the connection for easier tracking in the log
3258 conn->connection_id = connection_id_counter++;
3260 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3261 if(result != CURLE_OK)
3262 conn->connection_id = -1;
3267 /* after a TCP connection to the proxy has been verified, this function does
3268 the next magic step.
3270 Note: this function's sub-functions call failf()
3273 CURLcode Curl_connected_proxy(struct connectdata *conn,
3276 if(!conn->bits.proxy || sockindex)
3277 /* this magic only works for the primary socket as the secondary is used
3278 for FTP only and it has FTP specific magic in ftp.c */
3281 switch(conn->proxytype) {
3282 #ifndef CURL_DISABLE_PROXY
3283 case CURLPROXY_SOCKS5:
3284 case CURLPROXY_SOCKS5_HOSTNAME:
3285 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3286 conn->host.name, conn->remote_port,
3289 case CURLPROXY_SOCKS4:
3290 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3291 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3293 case CURLPROXY_SOCKS4A:
3294 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3295 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3297 #endif /* CURL_DISABLE_PROXY */
3298 case CURLPROXY_HTTP:
3299 case CURLPROXY_HTTP_1_0:
3300 /* do nothing here. handled later. */
3304 } /* switch proxytype */
3310 * verboseconnect() displays verbose information after a connect
3312 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3313 void Curl_verboseconnect(struct connectdata *conn)
3315 if(conn->data->set.verbose)
3316 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3317 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3318 conn->ip_addr_str, conn->port, conn->connection_id);
3322 int Curl_protocol_getsock(struct connectdata *conn,
3323 curl_socket_t *socks,
3326 if(conn->handler->proto_getsock)
3327 return conn->handler->proto_getsock(conn, socks, numsocks);
3328 return GETSOCK_BLANK;
3331 int Curl_doing_getsock(struct connectdata *conn,
3332 curl_socket_t *socks,
3335 if(conn && conn->handler->doing_getsock)
3336 return conn->handler->doing_getsock(conn, socks, numsocks);
3337 return GETSOCK_BLANK;
3341 * We are doing protocol-specific connecting and this is being called over and
3342 * over from the multi interface until the connection phase is done on
3346 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3349 CURLcode result=CURLE_OK;
3351 if(conn && conn->handler->connecting) {
3353 result = conn->handler->connecting(conn, done);
3362 * We are DOING this is being called over and over from the multi interface
3363 * until the DOING phase is done on protocol layer.
3366 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3368 CURLcode result=CURLE_OK;
3370 if(conn && conn->handler->doing) {
3372 result = conn->handler->doing(conn, done);
3381 * We have discovered that the TCP connection has been successful, we can now
3382 * proceed with some action.
3385 CURLcode Curl_protocol_connect(struct connectdata *conn,
3386 bool *protocol_done)
3388 CURLcode result=CURLE_OK;
3390 *protocol_done = FALSE;
3392 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3393 /* We already are connected, get back. This may happen when the connect
3394 worked fine in the first call, like when we connect to a local server
3395 or proxy. Note that we don't know if the protocol is actually done.
3397 Unless this protocol doesn't have any protocol-connect callback, as
3398 then we know we're done. */
3399 if(!conn->handler->connecting)
3400 *protocol_done = TRUE;
3405 if(!conn->bits.protoconnstart) {
3407 result = Curl_proxy_connect(conn);
3411 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3412 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3413 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3414 before proceeding further. Return CURLE_OK so we'll be called again */
3417 if(conn->handler->connect_it) {
3418 /* is there a protocol-specific connect() procedure? */
3420 /* Call the protocol-specific connect function */
3421 result = conn->handler->connect_it(conn, protocol_done);
3424 *protocol_done = TRUE;
3426 /* it has started, possibly even completed but that knowledge isn't stored
3429 conn->bits.protoconnstart = TRUE;
3432 return result; /* pass back status */
3436 * Helpers for IDNA convertions.
3438 static bool is_ASCII_name(const char *hostname)
3440 const unsigned char *ch = (const unsigned char*)hostname;
3451 * Check if characters in hostname is allowed in Top Level Domain.
3453 static bool tld_check_name(struct SessionHandle *data,
3454 const char *ace_hostname)
3457 char *uc_name = NULL;
3459 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3460 const char *tld_errmsg = "<no msg>";
3465 /* Convert (and downcase) ACE-name back into locale's character set */
3466 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3467 if(rc != IDNA_SUCCESS)
3470 rc = tld_check_lz(uc_name, &err_pos, NULL);
3471 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3472 #ifdef HAVE_TLD_STRERROR
3473 if(rc != TLD_SUCCESS)
3474 tld_errmsg = tld_strerror((Tld_rc)rc);
3476 if(rc == TLD_INVALID)
3477 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3478 tld_errmsg, err_pos, uc_name[err_pos],
3479 uc_name[err_pos] & 255);
3480 else if(rc != TLD_SUCCESS)
3481 infof(data, "WARNING: TLD check for %s failed; %s\n",
3482 uc_name, tld_errmsg);
3483 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3486 if(rc != TLD_SUCCESS)
3494 * Perform any necessary IDN conversion of hostname
3496 static void fix_hostname(struct SessionHandle *data,
3497 struct connectdata *conn, struct hostname *host)
3502 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3506 /* set the name we use to display the host name */
3507 host->dispname = host->name;
3508 if(!is_ASCII_name(host->name)) {
3510 /*************************************************************
3511 * Check name for non-ASCII and convert hostname to ACE form.
3512 *************************************************************/
3513 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3514 char *ace_hostname = NULL;
3515 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3516 infof (data, "Input domain encoded as `%s'\n",
3517 stringprep_locale_charset ());
3518 if(rc != IDNA_SUCCESS)
3519 infof(data, "Failed to convert %s to ACE; %s\n",
3520 host->name, Curl_idn_strerror(conn,rc));
3522 /* tld_check_name() displays a warning if the host name contains
3523 "illegal" characters for this TLD */
3524 (void)tld_check_name(data, ace_hostname);
3526 host->encalloc = ace_hostname;
3527 /* change the name pointer to point to the encoded hostname */
3528 host->name = host->encalloc;
3531 #elif defined(USE_WIN32_IDN)
3532 /*************************************************************
3533 * Check name for non-ASCII and convert hostname to ACE form.
3534 *************************************************************/
3535 char *ace_hostname = NULL;
3536 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3538 infof(data, "Failed to convert %s to ACE;\n",
3541 host->encalloc = ace_hostname;
3542 /* change the name pointer to point to the encoded hostname */
3543 host->name = host->encalloc;
3546 infof(data, "IDN support not present, can't parse Unicode domains\n");
3551 static void llist_dtor(void *user, void *element)
3559 * Allocate and initialize a new connectdata object.
3561 static struct connectdata *allocate_conn(struct SessionHandle *data)
3563 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3567 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3568 already from start to avoid NULL
3569 situations and checks */
3571 /* and we setup a few fields in case we end up actually using this struct */
3573 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3574 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3575 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3576 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3577 conn->connection_id = -1; /* no ID */
3578 conn->port = -1; /* unknown at this point */
3579 conn->remote_port = -1; /* unknown */
3581 /* Default protocol-independent behavior doesn't support persistent
3582 connections, so we set this to force-close. Protocols that support
3583 this need to set this to FALSE in their "curl_do" functions. */
3584 conn->bits.close = TRUE;
3586 /* Store creation time to help future close decision making */
3587 conn->created = Curl_tvnow();
3589 conn->data = data; /* Setup the association between this connection
3590 and the SessionHandle */
3592 conn->proxytype = data->set.proxytype; /* type */
3594 #ifdef CURL_DISABLE_PROXY
3596 conn->bits.proxy = FALSE;
3597 conn->bits.httpproxy = FALSE;
3598 conn->bits.proxy_user_passwd = FALSE;
3599 conn->bits.tunnel_proxy = FALSE;
3601 #else /* CURL_DISABLE_PROXY */
3603 /* note that these two proxy bits are now just on what looks to be
3604 requested, they may be altered down the road */
3605 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3606 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3607 conn->bits.httpproxy = (conn->bits.proxy &&
3608 (conn->proxytype == CURLPROXY_HTTP ||
3609 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3610 conn->bits.proxy_user_passwd =
3611 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3612 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3614 #endif /* CURL_DISABLE_PROXY */
3616 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3617 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3618 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3620 conn->verifypeer = data->set.ssl.verifypeer;
3621 conn->verifyhost = data->set.ssl.verifyhost;
3623 conn->ip_version = data->set.ipver;
3625 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3626 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3627 conn->ntlm_auth_hlpr_pid = 0;
3628 conn->challenge_header = NULL;
3629 conn->response_header = NULL;
3632 if(Curl_multi_pipeline_enabled(data->multi) &&
3633 !conn->master_buffer) {
3634 /* Allocate master_buffer to be used for pipelining */
3635 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3636 if(!conn->master_buffer)
3640 /* Initialize the pipeline lists */
3641 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3642 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3643 if(!conn->send_pipe || !conn->recv_pipe)
3647 conn->data_prot = PROT_CLEAR;
3650 /* Store the local bind parameters that will be used for this connection */
3651 if(data->set.str[STRING_DEVICE]) {
3652 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3656 conn->localportrange = data->set.localportrange;
3657 conn->localport = data->set.localport;
3659 /* the close socket stuff needs to be copied to the connection struct as
3660 it may live on without (this specific) SessionHandle */
3661 conn->fclosesocket = data->set.fclosesocket;
3662 conn->closesocket_client = data->set.closesocket_client;
3667 Curl_llist_destroy(conn->send_pipe, NULL);
3668 Curl_llist_destroy(conn->recv_pipe, NULL);
3670 conn->send_pipe = NULL;
3671 conn->recv_pipe = NULL;
3673 Curl_safefree(conn->master_buffer);
3674 Curl_safefree(conn->localdev);
3675 Curl_safefree(conn);
3679 static CURLcode findprotocol(struct SessionHandle *data,
3680 struct connectdata *conn,
3681 const char *protostr)
3683 const struct Curl_handler * const *pp;
3684 const struct Curl_handler *p;
3686 /* Scan protocol handler table and match against 'protostr' to set a few
3687 variables based on the URL. Now that the handler may be changed later
3688 when the protocol specific setup function is called. */
3689 for(pp = protocols; (p = *pp) != NULL; pp++) {
3690 if(Curl_raw_equal(p->scheme, protostr)) {
3691 /* Protocol found in table. Check if allowed */
3692 if(!(data->set.allowed_protocols & p->protocol))
3696 /* it is allowed for "normal" request, now do an extra check if this is
3697 the result of a redirect */
3698 if(data->state.this_is_a_follow &&
3699 !(data->set.redir_protocols & p->protocol))
3703 /* Perform setup complement if some. */
3704 conn->handler = conn->given = p;
3706 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3712 /* The protocol was not found in the table, but we don't have to assign it
3713 to anything since it is already assigned to a dummy-struct in the
3714 create_conn() function when the connectdata struct is allocated. */
3715 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3718 return CURLE_UNSUPPORTED_PROTOCOL;
3722 * Parse URL and fill in the relevant members of the connection struct.
3724 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3725 struct connectdata *conn,
3727 char **userp, char **passwdp,
3732 char *path = data->state.path;
3735 char protobuf[16] = "";
3736 const char *protop = "";
3738 bool rebuild_url = FALSE;
3740 *prot_missing = FALSE;
3742 /*************************************************************
3745 * We need to parse the url even when using the proxy, because we will need
3746 * the hostname and port in case we are trying to SSL connect through the
3747 * proxy -- and we don't know if we will need to use SSL until we parse the
3749 ************************************************************/
3750 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3752 Curl_raw_equal(protobuf, "file")) {
3753 if(path[0] == '/' && path[1] == '/') {
3754 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3755 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3756 * file://localhost/<path> is similar to how other schemes treat missing
3757 * hostnames. See RFC 1808. */
3759 /* This cannot be done with strcpy() in a portable manner, since the
3760 memory areas overlap! */
3761 memmove(path, path + 2, strlen(path + 2)+1);
3764 * we deal with file://<host>/<path> differently since it supports no
3765 * hostname other than "localhost" and "127.0.0.1", which is unique among
3766 * the URL protocols specified in RFC 1738
3768 if(path[0] != '/') {
3769 /* the URL included a host name, we ignore host names in file:// URLs
3770 as the standards don't define what to do with them */
3771 char *ptr=strchr(path, '/');
3773 /* there was a slash present
3775 RFC1738 (section 3.1, page 5) says:
3777 The rest of the locator consists of data specific to the scheme,
3778 and is known as the "url-path". It supplies the details of how the
3779 specified resource can be accessed. Note that the "/" between the
3780 host (or port) and the url-path is NOT part of the url-path.
3782 As most agents use file://localhost/foo to get '/foo' although the
3783 slash preceding foo is a separator and not a slash for the path,
3784 a URL as file://localhost//foo must be valid as well, to refer to
3785 the same file with an absolute path.
3788 if(ptr[1] && ('/' == ptr[1]))
3789 /* if there was two slashes, we skip the first one as that is then
3790 used truly as a separator */
3793 /* This cannot be made with strcpy, as the memory chunks overlap! */
3794 memmove(path, ptr, strlen(ptr)+1);
3798 protop = "file"; /* protocol string */
3804 if(2 > sscanf(data->change.url,
3805 "%15[^\n:]://%[^\n/?]%[^\n]",
3807 conn->host.name, path)) {
3810 * The URL was badly formatted, let's try the browser-style _without_
3811 * protocol specified like 'http://'.
3813 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3816 * We couldn't even get this format.
3817 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3818 * assigned, but the return value is EOF!
3820 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3821 if(!(rc == -1 && *conn->host.name))
3824 failf(data, "<url> malformed");
3825 return CURLE_URL_MALFORMAT;
3830 * Since there was no protocol part specified, we guess what protocol it
3831 * is based on the first letters of the server name.
3834 /* Note: if you add a new protocol, please update the list in
3835 * lib/version.c too! */
3837 if(checkprefix("FTP.", conn->host.name))
3839 else if(checkprefix("DICT.", conn->host.name))
3841 else if(checkprefix("LDAP.", conn->host.name))
3843 else if(checkprefix("IMAP.", conn->host.name))
3845 else if(checkprefix("SMTP.", conn->host.name))
3847 else if(checkprefix("POP3.", conn->host.name))
3853 *prot_missing = TRUE; /* not given in URL */
3859 /* We search for '?' in the host name (but only on the right side of a
3860 * @-letter to allow ?-letters in username and password) to handle things
3861 * like http://example.com?param= (notice the missing '/').
3863 at = strchr(conn->host.name, '@');
3865 query = strchr(at+1, '?');
3867 query = strchr(conn->host.name, '?');
3870 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3871 a slash after the '?', that is where the path currently begins and the
3872 '?string' is still part of the host name.
3874 We must move the trailing part from the host name and put it first in
3875 the path. And have it all prefixed with a slash.
3878 size_t hostlen = strlen(query);
3879 size_t pathlen = strlen(path);
3881 /* move the existing path plus the zero byte forward, to make room for
3882 the host-name part */
3883 memmove(path+hostlen+1, path, pathlen+1);
3885 /* now copy the trailing host part in front of the existing path */
3886 memcpy(path+1, query, hostlen);
3888 path[0]='/'; /* prepend the missing slash */
3891 *query=0; /* now cut off the hostname at the ? */
3894 /* if there's no path set, use a single slash */
3899 /* If the URL is malformatted (missing a '/' after hostname before path) we
3900 * insert a slash here. The only letter except '/' we accept to start a path
3903 if(path[0] == '?') {
3904 /* We need this function to deal with overlapping memory areas. We know
3905 that the memory area 'path' points to is 'urllen' bytes big and that
3906 is bigger than the path. Use +1 to move the zero byte too. */
3907 memmove(&path[1], path, strlen(path)+1);
3912 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3913 char *newp = Curl_dedotdotify(path);
3915 return CURLE_OUT_OF_MEMORY;
3917 if(strcmp(newp, path)) {
3919 free(data->state.pathbuffer);
3920 data->state.pathbuffer = newp;
3921 data->state.path = newp;
3929 * "rebuild_url" means that one or more URL components have been modified so
3930 * we need to generate an updated full version. We need the corrected URL
3931 * when communicating over HTTP proxy and we don't know at this point if
3932 * we're using a proxy or not.
3937 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3939 size_t urllen = strlen(data->change.url); /* original URL length */
3941 size_t prefixlen = strlen(conn->host.name);
3944 prefixlen += strlen(protop) + strlen("://");
3946 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3948 return CURLE_OUT_OF_MEMORY;
3950 /* copy the prefix */
3951 memcpy(reurl, data->change.url, prefixlen);
3953 /* append the trailing piece + zerobyte */
3954 memcpy(&reurl[prefixlen], path, plen + 1);
3956 /* possible free the old one */
3957 if(data->change.url_alloc) {
3958 Curl_safefree(data->change.url);
3959 data->change.url_alloc = FALSE;
3962 infof(data, "Rebuilt URL to: %s\n", reurl);
3964 data->change.url = reurl;
3965 data->change.url_alloc = TRUE; /* free this later */
3969 * Parse the login details from the URL and strip them out of
3972 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3973 if(result != CURLE_OK)
3976 if(conn->host.name[0] == '[') {
3977 /* This looks like an IPv6 address literal. See if there is an address
3978 scope if there is no location header */
3979 char *percent = strchr(conn->host.name, '%');
3981 unsigned int identifier_offset = 3;
3983 unsigned long scope;
3984 if(strncmp("%25", percent, 3) != 0) {
3986 "Please URL encode %% as %%25, see RFC 6874.\n");
3987 identifier_offset = 1;
3989 scope = strtoul(percent + identifier_offset, &endp, 10);
3991 /* The address scope was well formed. Knock it out of the
3993 memmove(percent, endp, strlen(endp)+1);
3994 conn->scope = (unsigned int)scope;
3997 /* Zone identifier is not numeric */
3998 #if defined(HAVE_NET_IF_H) && defined(IFNAMSIZ)
3999 char ifname[IFNAMSIZ + 2];
4000 char *square_bracket;
4001 unsigned int scopeidx = 0;
4002 strncpy(ifname, percent + identifier_offset, IFNAMSIZ + 2);
4003 /* Ensure nullbyte termination */
4004 ifname[IFNAMSIZ + 1] = '\0';
4005 square_bracket = strchr(ifname, ']');
4006 if(square_bracket) {
4008 *square_bracket = '\0';
4009 scopeidx = if_nametoindex(ifname);
4011 infof(data, "Invalid network interface: %s; %s\n", ifname,
4016 /* Remove zone identifier from hostname */
4018 percent + identifier_offset + strlen(ifname),
4019 identifier_offset + strlen(ifname));
4020 conn->scope = scopeidx;
4023 #endif /* HAVE_NET_IF_H && IFNAMSIZ */
4024 infof(data, "Invalid IPv6 address format\n");
4030 /* Override any scope that was set above. */
4031 conn->scope = data->set.scope;
4033 /* Remove the fragment part of the path. Per RFC 2396, this is always the
4034 last part of the URI. We are looking for the first '#' so that we deal
4035 gracefully with non conformant URI such as http://example.com#foo#bar. */
4036 fragment = strchr(path, '#');
4040 /* we know the path part ended with a fragment, so we know the full URL
4041 string does too and we need to cut it off from there so it isn't used
4043 fragment = strchr(data->change.url, '#');
4049 * So if the URL was A://B/C#D,
4051 * conn->host.name is B
4052 * data->state.path is /C
4055 return findprotocol(data, conn, protop);
4059 * If we're doing a resumed transfer, we need to setup our stuff
4062 static CURLcode setup_range(struct SessionHandle *data)
4064 struct UrlState *s = &data->state;
4065 s->resume_from = data->set.set_resume_from;
4066 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4067 if(s->rangestringalloc)
4071 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4073 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4075 s->rangestringalloc = (s->range)?TRUE:FALSE;
4078 return CURLE_OUT_OF_MEMORY;
4080 /* tell ourselves to fetch this range */
4081 s->use_range = TRUE; /* enable range download */
4084 s->use_range = FALSE; /* disable range download */
4091 * setup_connection_internals() -
4093 * Setup connection internals specific to the requested protocol in the
4094 * SessionHandle. This is inited and setup before the connection is made but
4095 * is about the particular protocol that is to be used.
4097 * This MUST get called after proxy magic has been figured out.
4099 static CURLcode setup_connection_internals(struct connectdata *conn)
4101 const struct Curl_handler * p;
4103 struct SessionHandle *data = conn->data;
4105 /* in some case in the multi state-machine, we go back to the CONNECT state
4106 and then a second (or third or...) call to this function will be made
4107 without doing a DISCONNECT or DONE in between (since the connection is
4108 yet in place) and therefore this function needs to first make sure
4109 there's no lingering previous data allocated. */
4110 Curl_free_request_state(data);
4112 memset(&data->req, 0, sizeof(struct SingleRequest));
4113 data->req.maxdownload = -1;
4115 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4117 /* Perform setup complement if some. */
4120 if(p->setup_connection) {
4121 result = (*p->setup_connection)(conn);
4123 if(result != CURLE_OK)
4126 p = conn->handler; /* May have changed. */
4130 /* we check for -1 here since if proxy was detected already, this
4131 was very likely already set to the proxy port */
4132 conn->port = p->defport;
4134 /* only if remote_port was not already parsed off the URL we use the
4135 default port number */
4136 if(conn->remote_port < 0)
4137 conn->remote_port = (unsigned short)conn->given->defport;
4143 * Curl_free_request_state() should free temp data that was allocated in the
4144 * SessionHandle for this single request.
4147 void Curl_free_request_state(struct SessionHandle *data)
4149 Curl_safefree(data->req.protop);
4153 #ifndef CURL_DISABLE_PROXY
4154 /****************************************************************
4155 * Checks if the host is in the noproxy list. returns true if it matches
4156 * and therefore the proxy should NOT be used.
4157 ****************************************************************/
4158 static bool check_noproxy(const char* name, const char* no_proxy)
4160 /* no_proxy=domain1.dom,host.domain2.dom
4161 * (a comma-separated list of hosts which should
4162 * not be proxied, or an asterisk to override
4163 * all proxy variables)
4167 const char* separator = ", ";
4168 size_t no_proxy_len;
4172 if(no_proxy && no_proxy[0]) {
4173 if(Curl_raw_equal("*", no_proxy)) {
4177 /* NO_PROXY was specified and it wasn't just an asterisk */
4179 no_proxy_len = strlen(no_proxy);
4180 endptr = strchr(name, ':');
4182 namelen = endptr - name;
4184 namelen = strlen(name);
4186 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4187 while(tok_start < no_proxy_len &&
4188 strchr(separator, no_proxy[tok_start]) != NULL) {
4189 /* Look for the beginning of the token. */
4193 if(tok_start == no_proxy_len)
4194 break; /* It was all trailing separator chars, no more tokens. */
4196 for(tok_end = tok_start; tok_end < no_proxy_len &&
4197 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4198 /* Look for the end of the token. */
4201 /* To match previous behaviour, where it was necessary to specify
4202 * ".local.com" to prevent matching "notlocal.com", we will leave
4205 if(no_proxy[tok_start] == '.')
4208 if((tok_end - tok_start) <= namelen) {
4209 /* Match the last part of the name to the domain we are checking. */
4210 const char *checkn = name + namelen - (tok_end - tok_start);
4211 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4212 tok_end - tok_start)) {
4213 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4214 /* We either have an exact match, or the previous character is a .
4215 * so it is within the same domain, so no proxy for this host.
4220 } /* if((tok_end - tok_start) <= namelen) */
4221 } /* for(tok_start = 0; tok_start < no_proxy_len;
4222 tok_start = tok_end + 1) */
4223 } /* NO_PROXY was specified and it wasn't just an asterisk */
4228 /****************************************************************
4229 * Detect what (if any) proxy to use. Remember that this selects a host
4230 * name and is not limited to HTTP proxies only.
4231 * The returned pointer must be freed by the caller (unless NULL)
4232 ****************************************************************/
4233 static char *detect_proxy(struct connectdata *conn)
4237 #ifndef CURL_DISABLE_HTTP
4238 /* If proxy was not specified, we check for default proxy environment
4239 * variables, to enable i.e Lynx compliance:
4241 * http_proxy=http://some.server.dom:port/
4242 * https_proxy=http://some.server.dom:port/
4243 * ftp_proxy=http://some.server.dom:port/
4244 * no_proxy=domain1.dom,host.domain2.dom
4245 * (a comma-separated list of hosts which should
4246 * not be proxied, or an asterisk to override
4247 * all proxy variables)
4248 * all_proxy=http://some.server.dom:port/
4249 * (seems to exist for the CERN www lib. Probably
4250 * the first to check for.)
4252 * For compatibility, the all-uppercase versions of these variables are
4253 * checked if the lowercase versions don't exist.
4255 char *no_proxy=NULL;
4256 char proxy_env[128];
4258 no_proxy=curl_getenv("no_proxy");
4260 no_proxy=curl_getenv("NO_PROXY");
4262 if(!check_noproxy(conn->host.name, no_proxy)) {
4263 /* It was not listed as without proxy */
4264 const char *protop = conn->handler->scheme;
4265 char *envp = proxy_env;
4268 /* Now, build <protocol>_proxy and check for such a one to use */
4270 *envp++ = (char)tolower((int)*protop++);
4273 strcpy(envp, "_proxy");
4275 /* read the protocol proxy: */
4276 prox=curl_getenv(proxy_env);
4279 * We don't try the uppercase version of HTTP_PROXY because of
4282 * When curl is used in a webserver application
4283 * environment (cgi or php), this environment variable can
4284 * be controlled by the web server user by setting the
4285 * http header 'Proxy:' to some value.
4287 * This can cause 'internal' http/ftp requests to be
4288 * arbitrarily redirected by any external attacker.
4290 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4291 /* There was no lowercase variable, try the uppercase version: */
4292 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4293 prox=curl_getenv(proxy_env);
4296 if(prox && *prox) { /* don't count "" strings */
4297 proxy = prox; /* use this */
4300 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4302 proxy=curl_getenv("ALL_PROXY");
4304 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4309 #else /* !CURL_DISABLE_HTTP */
4312 #endif /* CURL_DISABLE_HTTP */
4318 * If this is supposed to use a proxy, we need to figure out the proxy
4319 * host name, so that we can re-use an existing connection
4320 * that may exist registered to the same proxy host.
4321 * proxy will be freed before this function returns.
4323 static CURLcode parse_proxy(struct SessionHandle *data,
4324 struct connectdata *conn, char *proxy)
4329 /* We use 'proxyptr' to point to the proxy name from now on... */
4334 /* We do the proxy host string parsing here. We want the host name and the
4335 * port name. Accept a protocol:// prefix
4338 /* Parse the protocol part if present */
4339 endofprot = strstr(proxy, "://");
4341 proxyptr = endofprot+3;
4342 if(checkprefix("socks5h", proxy))
4343 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4344 else if(checkprefix("socks5", proxy))
4345 conn->proxytype = CURLPROXY_SOCKS5;
4346 else if(checkprefix("socks4a", proxy))
4347 conn->proxytype = CURLPROXY_SOCKS4A;
4348 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4349 conn->proxytype = CURLPROXY_SOCKS4;
4350 /* Any other xxx:// : change to http proxy */
4353 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4355 /* Is there a username and password given in this proxy url? */
4356 atsign = strchr(proxyptr, '@');
4358 CURLcode res = CURLE_OK;
4359 char *proxyuser = NULL;
4360 char *proxypasswd = NULL;
4362 res = parse_login_details(proxyptr, atsign - proxyptr,
4363 &proxyuser, &proxypasswd, NULL);
4365 /* found user and password, rip them out. note that we are
4366 unescaping them, as there is otherwise no way to have a
4367 username or password with reserved characters like ':' in
4369 Curl_safefree(conn->proxyuser);
4370 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4371 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4373 conn->proxyuser = strdup("");
4375 if(!conn->proxyuser)
4376 res = CURLE_OUT_OF_MEMORY;
4378 Curl_safefree(conn->proxypasswd);
4379 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4380 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4382 conn->proxypasswd = strdup("");
4384 if(!conn->proxypasswd)
4385 res = CURLE_OUT_OF_MEMORY;
4389 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4390 atsign++; /* the right side of the @-letter */
4393 proxyptr = atsign; /* now use this instead */
4395 res = CURLE_OUT_OF_MEMORY;
4399 Curl_safefree(proxyuser);
4400 Curl_safefree(proxypasswd);
4406 /* start scanning for port number at this point */
4409 /* detect and extract RFC6874-style IPv6-addresses */
4410 if(*proxyptr == '[') {
4411 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4412 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
4415 /* There might be a zone identifier */
4416 if(strncmp("%25", ptr, 3))
4417 infof(data, "Please URL encode %% as %%25, see RFC 6874.\n");
4419 /* Allow unresered characters as defined in RFC 3986 */
4420 while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') ||
4421 (*ptr == '.') || (*ptr == '_') || (*ptr == '~')))
4425 /* yeps, it ended nicely with a bracket as well */
4428 infof(data, "Invalid IPv6 address format\n");
4430 /* Note that if this didn't end with a bracket, we still advanced the
4431 * proxyptr first, but I can't see anything wrong with that as no host
4432 * name nor a numeric can legally start with a bracket.
4436 /* Get port number off proxy.server.com:1080 */
4437 prox_portno = strchr(portptr, ':');
4439 *prox_portno = 0x0; /* cut off number from host name */
4441 /* now set the local port number */
4442 conn->port = strtol(prox_portno, NULL, 10);
4445 if(proxyptr[0]=='/')
4446 /* If the first character in the proxy string is a slash, fail
4447 immediately. The following code will otherwise clear the string which
4448 will lead to code running as if no proxy was set! */
4449 return CURLE_COULDNT_RESOLVE_PROXY;
4451 /* without a port number after the host name, some people seem to use
4452 a slash so we strip everything from the first slash */
4453 atsign = strchr(proxyptr, '/');
4455 *atsign = 0x0; /* cut off path part from host name */
4457 if(data->set.proxyport)
4458 /* None given in the proxy string, then get the default one if it is
4460 conn->port = data->set.proxyport;
4463 /* now, clone the cleaned proxy host name */
4464 conn->proxy.rawalloc = strdup(proxyptr);
4465 conn->proxy.name = conn->proxy.rawalloc;
4467 if(!conn->proxy.rawalloc)
4468 return CURLE_OUT_OF_MEMORY;
4474 * Extract the user and password from the authentication string
4476 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4477 struct connectdata *conn)
4479 char proxyuser[MAX_CURL_USER_LENGTH]="";
4480 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4482 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4483 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4484 MAX_CURL_USER_LENGTH);
4485 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4487 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4488 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4489 MAX_CURL_PASSWORD_LENGTH);
4490 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4493 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4494 if(!conn->proxyuser)
4495 return CURLE_OUT_OF_MEMORY;
4497 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4498 if(!conn->proxypasswd)
4499 return CURLE_OUT_OF_MEMORY;
4503 #endif /* CURL_DISABLE_PROXY */
4508 * Parse the login details (user name, password and options) from the URL and
4509 * strip them out of the host name
4511 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4514 * Outputs: (almost :- all currently undefined)
4515 * conn->bits.user_passwd - non-zero if non-default passwords exist
4516 * user - non-zero length if defined
4517 * passwd - non-zero length if defined
4518 * options - non-zero length if defined
4519 * conn->host.name - remove user name and password
4521 static CURLcode parse_url_login(struct SessionHandle *data,
4522 struct connectdata *conn,
4523 char **user, char **passwd, char **options)
4525 CURLcode result = CURLE_OK;
4527 char *passwdp = NULL;
4528 char *optionsp = NULL;
4530 /* At this point, we're hoping all the other special cases have
4531 * been taken care of, so conn->host.name is at most
4532 * [user[:password][;options]]@]hostname
4534 * We need somewhere to put the embedded details, so do that first.
4537 char *ptr = strchr(conn->host.name, '@');
4538 char *login = conn->host.name;
4540 DEBUGASSERT(!**user);
4541 DEBUGASSERT(!**passwd);
4542 DEBUGASSERT(!**options);
4547 /* We will now try to extract the
4548 * possible login information in a string like:
4549 * ftp://user:password@ftp.my.site:8021/README */
4550 conn->host.name = ++ptr;
4552 /* So the hostname is sane. Only bother interpreting the
4553 * results if we could care. It could still be wasted
4554 * work because it might be overtaken by the programmatically
4555 * set user/passwd, but doing that first adds more cases here :-(
4558 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4561 /* We could use the login information in the URL so extract it */
4562 result = parse_login_details(login, ptr - login - 1,
4563 &userp, &passwdp, &optionsp);
4564 if(result != CURLE_OK)
4570 /* We have a user in the URL */
4571 conn->bits.userpwd_in_url = TRUE;
4572 conn->bits.user_passwd = TRUE; /* enable user+password */
4574 /* Decode the user */
4575 newname = curl_easy_unescape(data, userp, 0, NULL);
4577 result = CURLE_OUT_OF_MEMORY;
4586 /* We have a password in the URL so decode it */
4587 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4589 result = CURLE_OUT_OF_MEMORY;
4594 *passwd = newpasswd;
4598 /* We have an options list in the URL so decode it */
4599 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4601 result = CURLE_OUT_OF_MEMORY;
4606 *options = newoptions;
4612 Curl_safefree(userp);
4613 Curl_safefree(passwdp);
4614 Curl_safefree(optionsp);
4620 * parse_login_details()
4622 * This is used to parse a login string for user name, password and options in
4623 * the following formats:
4627 * user:password;options
4629 * user;options:password
4637 * login [in] - The login string.
4638 * len [in] - The length of the login string.
4639 * userp [in/out] - The address where a pointer to newly allocated memory
4640 * holding the user will be stored upon completion.
4641 * passdwp [in/out] - The address where a pointer to newly allocated memory
4642 * holding the password will be stored upon completion.
4643 * optionsp [in/out] - The address where a pointer to newly allocated memory
4644 * holding the options will be stored upon completion.
4646 * Returns CURLE_OK on success.
4648 static CURLcode parse_login_details(const char *login, const size_t len,
4649 char **userp, char **passwdp,
4652 CURLcode result = CURLE_OK;
4656 const char *psep = NULL;
4657 const char *osep = NULL;
4662 /* Attempt to find the password separator */
4664 psep = strchr(login, ':');
4666 /* Within the constraint of the login string */
4667 if(psep >= login + len)
4671 /* Attempt to find the options separator */
4673 osep = strchr(login, ';');
4675 /* Within the constraint of the login string */
4676 if(osep >= login + len)
4680 /* Calculate the portion lengths */
4682 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4683 (osep ? (size_t)(osep - login) : len));
4685 (osep && osep > psep ? (size_t)(osep - psep) :
4686 (size_t)(login + len - psep)) - 1 : 0);
4688 (psep && psep > osep ? (size_t)(psep - osep) :
4689 (size_t)(login + len - osep)) - 1 : 0);
4691 /* Allocate the user portion buffer */
4693 ubuf = malloc(ulen + 1);
4695 result = CURLE_OUT_OF_MEMORY;
4698 /* Allocate the password portion buffer */
4699 if(!result && passwdp && plen) {
4700 pbuf = malloc(plen + 1);
4702 Curl_safefree(ubuf);
4703 result = CURLE_OUT_OF_MEMORY;
4707 /* Allocate the options portion buffer */
4708 if(!result && optionsp && olen) {
4709 obuf = malloc(olen + 1);
4711 Curl_safefree(pbuf);
4712 Curl_safefree(ubuf);
4713 result = CURLE_OUT_OF_MEMORY;
4718 /* Store the user portion if necessary */
4720 memcpy(ubuf, login, ulen);
4722 Curl_safefree(*userp);
4726 /* Store the password portion if necessary */
4728 memcpy(pbuf, psep + 1, plen);
4730 Curl_safefree(*passwdp);
4734 /* Store the options portion if necessary */
4736 memcpy(obuf, osep + 1, olen);
4738 Curl_safefree(*optionsp);
4746 /*************************************************************
4747 * Figure out the remote port number and fix it in the URL
4749 * No matter if we use a proxy or not, we have to figure out the remote
4750 * port number of various reasons.
4752 * To be able to detect port number flawlessly, we must not confuse them
4753 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4755 * The conn->host.name is currently [user:passwd@]host[:port] where host
4756 * could be a hostname, IPv4 address or IPv6 address.
4758 * The port number embedded in the URL is replaced, if necessary.
4759 *************************************************************/
4760 static CURLcode parse_remote_port(struct SessionHandle *data,
4761 struct connectdata *conn)
4766 /* Note that at this point, the IPv6 address cannot contain any scope
4767 suffix as that has already been removed in the parseurlandfillconn()
4769 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4771 (']' == endbracket)) {
4772 /* this is a RFC2732-style specified IP-address */
4773 conn->bits.ipv6_ip = TRUE;
4775 conn->host.name++; /* skip over the starting bracket */
4776 portptr = strchr(conn->host.name, ']');
4778 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4780 portptr = NULL; /* no port number available */
4785 struct in6_addr in6;
4786 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4787 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4789 failf(data, "IPv6 numerical address used in URL without brackets");
4790 return CURLE_URL_MALFORMAT;
4794 portptr = strrchr(conn->host.name, ':');
4797 if(data->set.use_port && data->state.allow_port) {
4798 /* if set, we use this and ignore the port possibly given in the URL */
4799 conn->remote_port = (unsigned short)data->set.use_port;
4801 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4802 number - since the port number is to be ignored! */
4803 if(conn->bits.httpproxy) {
4804 /* we need to create new URL with the new port number */
4808 if(conn->bits.type_set)
4809 snprintf(type, sizeof(type), ";type=%c",
4810 data->set.prefer_ascii?'A':
4811 (data->set.ftp_list_only?'D':'I'));
4814 * This synthesized URL isn't always right--suffixes like ;type=A are
4815 * stripped off. It would be better to work directly from the original
4816 * URL and simply replace the port part of it.
4818 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4819 conn->bits.ipv6_ip?"[":"", conn->host.name,
4820 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4821 data->state.slash_removed?"/":"", data->state.path,
4824 return CURLE_OUT_OF_MEMORY;
4826 if(data->change.url_alloc) {
4827 Curl_safefree(data->change.url);
4828 data->change.url_alloc = FALSE;
4831 data->change.url = url;
4832 data->change.url_alloc = TRUE;
4836 /* no CURLOPT_PORT given, extract the one from the URL */
4841 port=strtol(portptr+1, &rest, 10); /* Port number must be decimal */
4843 if((port < 0) || (port > 0xffff)) {
4844 /* Single unix standard says port numbers are 16 bits long */
4845 failf(data, "Port number out of range");
4846 return CURLE_URL_MALFORMAT;
4849 else if(rest != &portptr[1]) {
4850 *portptr = '\0'; /* cut off the name there */
4851 conn->remote_port = curlx_ultous(port);
4854 /* Browser behavior adaptation. If there's a colon with no digits after,
4855 just cut off the name there which makes us ignore the colon and just
4856 use the default port. Firefox and Chrome both do that. */
4863 * Override the login details from the URL with that in the CURLOPT_USERPWD
4864 * option or a .netrc file, if applicable.
4866 static CURLcode override_login(struct SessionHandle *data,
4867 struct connectdata *conn,
4868 char **userp, char **passwdp, char **optionsp)
4870 if(data->set.str[STRING_USERNAME]) {
4872 *userp = strdup(data->set.str[STRING_USERNAME]);
4874 return CURLE_OUT_OF_MEMORY;
4877 if(data->set.str[STRING_PASSWORD]) {
4879 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4881 return CURLE_OUT_OF_MEMORY;
4884 if(data->set.str[STRING_OPTIONS]) {
4886 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4888 return CURLE_OUT_OF_MEMORY;
4891 conn->bits.netrc = FALSE;
4892 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4893 int ret = Curl_parsenetrc(conn->host.name,
4895 data->set.str[STRING_NETRC_FILE]);
4897 infof(data, "Couldn't find host %s in the "
4898 DOT_CHAR "netrc file; using defaults\n",
4902 return CURLE_OUT_OF_MEMORY;
4905 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4906 file, so that it is safe to use even if we followed a Location: to a
4907 different host or similar. */
4908 conn->bits.netrc = TRUE;
4910 conn->bits.user_passwd = TRUE; /* enable user+password */
4918 * Set the login details so they're available in the connection
4920 static CURLcode set_login(struct connectdata *conn,
4921 const char *user, const char *passwd,
4922 const char *options)
4924 CURLcode result = CURLE_OK;
4926 /* If our protocol needs a password and we have none, use the defaults */
4927 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4928 /* Store the default user */
4929 conn->user = strdup(CURL_DEFAULT_USER);
4931 /* Store the default password */
4933 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4935 conn->passwd = NULL;
4937 /* This is the default password, so DON'T set conn->bits.user_passwd */
4940 /* Store the user, zero-length if not set */
4941 conn->user = strdup(user);
4943 /* Store the password (only if user is present), zero-length if not set */
4945 conn->passwd = strdup(passwd);
4947 conn->passwd = NULL;
4950 if(!conn->user || !conn->passwd)
4951 result = CURLE_OUT_OF_MEMORY;
4953 /* Store the options, null if not set */
4954 if(!result && options[0]) {
4955 conn->options = strdup(options);
4958 result = CURLE_OUT_OF_MEMORY;
4964 /*************************************************************
4965 * Resolve the address of the server or proxy
4966 *************************************************************/
4967 static CURLcode resolve_server(struct SessionHandle *data,
4968 struct connectdata *conn,
4971 CURLcode result=CURLE_OK;
4972 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4974 /*************************************************************
4975 * Resolve the name of the server or proxy
4976 *************************************************************/
4977 if(conn->bits.reuse)
4978 /* We're reusing the connection - no need to resolve anything, and
4979 fix_hostname() was called already in create_conn() for the re-use
4984 /* this is a fresh connect */
4986 struct Curl_dns_entry *hostaddr;
4988 /* set a pointer to the hostname we display */
4989 fix_hostname(data, conn, &conn->host);
4991 if(!conn->proxy.name || !*conn->proxy.name) {
4992 /* If not connecting via a proxy, extract the port from the URL, if it is
4993 * there, thus overriding any defaults that might have been set above. */
4994 conn->port = conn->remote_port; /* it is the same port */
4996 /* Resolve target host right on */
4997 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4998 &hostaddr, timeout_ms);
4999 if(rc == CURLRESOLV_PENDING)
5002 else if(rc == CURLRESOLV_TIMEDOUT)
5003 result = CURLE_OPERATION_TIMEDOUT;
5005 else if(!hostaddr) {
5006 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
5007 result = CURLE_COULDNT_RESOLVE_HOST;
5008 /* don't return yet, we need to clean up the timeout first */
5012 /* This is a proxy that hasn't been resolved yet. */
5014 /* IDN-fix the proxy name */
5015 fix_hostname(data, conn, &conn->proxy);
5018 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
5019 &hostaddr, timeout_ms);
5021 if(rc == CURLRESOLV_PENDING)
5024 else if(rc == CURLRESOLV_TIMEDOUT)
5025 result = CURLE_OPERATION_TIMEDOUT;
5027 else if(!hostaddr) {
5028 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
5029 result = CURLE_COULDNT_RESOLVE_PROXY;
5030 /* don't return yet, we need to clean up the timeout first */
5033 DEBUGASSERT(conn->dns_entry == NULL);
5034 conn->dns_entry = hostaddr;
5041 * Cleanup the connection just allocated before we can move along and use the
5042 * previously existing one. All relevant data is copied over and old_conn is
5043 * ready for freeing once this function returns.
5045 static void reuse_conn(struct connectdata *old_conn,
5046 struct connectdata *conn)
5048 if(old_conn->proxy.rawalloc)
5049 free(old_conn->proxy.rawalloc);
5051 /* free the SSL config struct from this connection struct as this was
5052 allocated in vain and is targeted for destruction */
5053 Curl_free_ssl_config(&old_conn->ssl_config);
5055 conn->data = old_conn->data;
5057 /* get the user+password information from the old_conn struct since it may
5058 * be new for this request even when we re-use an existing connection */
5059 conn->bits.user_passwd = old_conn->bits.user_passwd;
5060 if(conn->bits.user_passwd) {
5061 /* use the new user name and password though */
5062 Curl_safefree(conn->user);
5063 Curl_safefree(conn->passwd);
5064 conn->user = old_conn->user;
5065 conn->passwd = old_conn->passwd;
5066 old_conn->user = NULL;
5067 old_conn->passwd = NULL;
5070 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
5071 if(conn->bits.proxy_user_passwd) {
5072 /* use the new proxy user name and proxy password though */
5073 Curl_safefree(conn->proxyuser);
5074 Curl_safefree(conn->proxypasswd);
5075 conn->proxyuser = old_conn->proxyuser;
5076 conn->proxypasswd = old_conn->proxypasswd;
5077 old_conn->proxyuser = NULL;
5078 old_conn->proxypasswd = NULL;
5081 /* host can change, when doing keepalive with a proxy or if the case is
5082 different this time etc */
5083 Curl_safefree(conn->host.rawalloc);
5084 conn->host=old_conn->host;
5086 /* persist connection info in session handle */
5087 Curl_persistconninfo(conn);
5090 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5092 Curl_safefree(old_conn->user);
5093 Curl_safefree(old_conn->passwd);
5094 Curl_safefree(old_conn->proxyuser);
5095 Curl_safefree(old_conn->proxypasswd);
5096 Curl_safefree(old_conn->localdev);
5098 Curl_llist_destroy(old_conn->send_pipe, NULL);
5099 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5101 old_conn->send_pipe = NULL;
5102 old_conn->recv_pipe = NULL;
5104 Curl_safefree(old_conn->master_buffer);
5108 * create_conn() sets up a new connectdata struct, or re-uses an already
5109 * existing one, and resolves host name.
5111 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5112 * response will be coming asynchronously. If *async is FALSE, the name is
5115 * @param data The sessionhandle pointer
5116 * @param in_connect is set to the next connection data pointer
5117 * @param async is set TRUE when an async DNS resolution is pending
5118 * @see Curl_setup_conn()
5120 * *NOTE* this function assigns the conn->data pointer!
5123 static CURLcode create_conn(struct SessionHandle *data,
5124 struct connectdata **in_connect,
5127 CURLcode result = CURLE_OK;
5128 struct connectdata *conn;
5129 struct connectdata *conn_temp = NULL;
5132 char *passwd = NULL;
5133 char *options = NULL;
5136 bool prot_missing = FALSE;
5137 bool no_connections_available = FALSE;
5139 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5140 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5144 /*************************************************************
5146 *************************************************************/
5148 if(!data->change.url) {
5149 result = CURLE_URL_MALFORMAT;
5153 /* First, split up the current URL in parts so that we can use the
5154 parts for checking against the already present connections. In order
5155 to not have to modify everything at once, we allocate a temporary
5156 connection data struct and fill in for comparison purposes. */
5157 conn = allocate_conn(data);
5160 result = CURLE_OUT_OF_MEMORY;
5164 /* We must set the return variable as soon as possible, so that our
5165 parent can cleanup any possible allocs we may have done before
5169 /* This initing continues below, see the comment "Continue connectdata
5170 * initialization here" */
5172 /***********************************************************
5173 * We need to allocate memory to store the path in. We get the size of the
5174 * full URL to be sure, and we need to make it at least 256 bytes since
5175 * other parts of the code will rely on this fact
5176 ***********************************************************/
5177 #define LEAST_PATH_ALLOC 256
5178 urllen=strlen(data->change.url);
5179 if(urllen < LEAST_PATH_ALLOC)
5180 urllen=LEAST_PATH_ALLOC;
5183 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5184 * 1 - an extra terminating zero
5185 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5188 Curl_safefree(data->state.pathbuffer);
5189 data->state.path = NULL;
5191 data->state.pathbuffer = malloc(urllen+2);
5192 if(NULL == data->state.pathbuffer) {
5193 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5196 data->state.path = data->state.pathbuffer;
5198 conn->host.rawalloc = malloc(urllen+2);
5199 if(NULL == conn->host.rawalloc) {
5200 Curl_safefree(data->state.pathbuffer);
5201 data->state.path = NULL;
5202 result = CURLE_OUT_OF_MEMORY;
5206 conn->host.name = conn->host.rawalloc;
5207 conn->host.name[0] = 0;
5210 passwd = strdup("");
5211 options = strdup("");
5212 if(!user || !passwd || !options) {
5213 result = CURLE_OUT_OF_MEMORY;
5217 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5219 if(result != CURLE_OK)
5222 /*************************************************************
5223 * No protocol part in URL was used, add it!
5224 *************************************************************/
5226 /* We're guessing prefixes here and if we're told to use a proxy or if
5227 we're gonna follow a Location: later or... then we need the protocol
5228 part added so that we have a valid URL. */
5231 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5234 result = CURLE_OUT_OF_MEMORY;
5238 if(data->change.url_alloc) {
5239 Curl_safefree(data->change.url);
5240 data->change.url_alloc = FALSE;
5243 data->change.url = reurl;
5244 data->change.url_alloc = TRUE; /* free this later */
5247 /*************************************************************
5248 * If the protocol can't handle url query strings, then cut
5249 * off the unhandable part
5250 *************************************************************/
5251 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5252 char *path_q_sep = strchr(conn->data->state.path, '?');
5254 /* according to rfc3986, allow the query (?foo=bar)
5255 also on protocols that can't handle it.
5257 cut the string-part after '?'
5260 /* terminate the string */
5265 if(data->set.str[STRING_BEARER]) {
5266 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5267 if(!conn->xoauth2_bearer) {
5268 result = CURLE_OUT_OF_MEMORY;
5273 #ifndef CURL_DISABLE_PROXY
5274 /*************************************************************
5275 * Extract the user and password from the authentication string
5276 *************************************************************/
5277 if(conn->bits.proxy_user_passwd) {
5278 result = parse_proxy_auth(data, conn);
5279 if(result != CURLE_OK)
5283 /*************************************************************
5284 * Detect what (if any) proxy to use
5285 *************************************************************/
5286 if(data->set.str[STRING_PROXY]) {
5287 proxy = strdup(data->set.str[STRING_PROXY]);
5288 /* if global proxy is set, this is it */
5290 failf(data, "memory shortage");
5291 result = CURLE_OUT_OF_MEMORY;
5296 if(data->set.str[STRING_NOPROXY] &&
5297 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5299 free(proxy); /* proxy is in exception list */
5304 proxy = detect_proxy(conn);
5306 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5307 free(proxy); /* Don't bother with an empty proxy string or if the
5308 protocol doesn't work with network */
5312 /***********************************************************************
5313 * If this is supposed to use a proxy, we need to figure out the proxy host
5314 * name, proxy type and port number, so that we can re-use an existing
5315 * connection that may exist registered to the same proxy host.
5316 ***********************************************************************/
5318 result = parse_proxy(data, conn, proxy);
5320 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5325 if((conn->proxytype == CURLPROXY_HTTP) ||
5326 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5327 #ifdef CURL_DISABLE_HTTP
5328 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5329 result = CURLE_UNSUPPORTED_PROTOCOL;
5332 /* force this connection's protocol to become HTTP if not already
5333 compatible - if it isn't tunneling through */
5334 if(!(conn->handler->protocol & PROTO_FAMILY_HTTP) &&
5335 !conn->bits.tunnel_proxy)
5336 conn->handler = &Curl_handler_http;
5338 conn->bits.httpproxy = TRUE;
5342 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5343 conn->bits.proxy = TRUE;
5346 /* we aren't using the proxy after all... */
5347 conn->bits.proxy = FALSE;
5348 conn->bits.httpproxy = FALSE;
5349 conn->bits.proxy_user_passwd = FALSE;
5350 conn->bits.tunnel_proxy = FALSE;
5353 #endif /* CURL_DISABLE_PROXY */
5355 /*************************************************************
5356 * If the protocol is using SSL and HTTP proxy is used, we set
5357 * the tunnel_proxy bit.
5358 *************************************************************/
5359 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5360 conn->bits.tunnel_proxy = TRUE;
5362 /*************************************************************
5363 * Figure out the remote port number and fix it in the URL
5364 *************************************************************/
5365 result = parse_remote_port(data, conn);
5366 if(result != CURLE_OK)
5369 /* Check for overridden login details and set them accordingly so they
5370 they are known when protocol->setup_connection is called! */
5371 result = override_login(data, conn, &user, &passwd, &options);
5372 if(result != CURLE_OK)
5374 result = set_login(conn, user, passwd, options);
5375 if(result != CURLE_OK)
5378 /*************************************************************
5379 * Setup internals depending on protocol. Needs to be done after
5380 * we figured out what/if proxy to use.
5381 *************************************************************/
5382 result = setup_connection_internals(conn);
5383 if(result != CURLE_OK)
5386 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5387 conn->send[FIRSTSOCKET] = Curl_send_plain;
5388 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5389 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5391 /***********************************************************************
5392 * file: is a special case in that it doesn't need a network connection
5393 ***********************************************************************/
5394 #ifndef CURL_DISABLE_FILE
5395 if(conn->handler->flags & PROTOPT_NONETWORK) {
5397 /* this is supposed to be the connect function so we better at least check
5398 that the file is present here! */
5399 DEBUGASSERT(conn->handler->connect_it);
5400 result = conn->handler->connect_it(conn, &done);
5402 /* Setup a "faked" transfer that'll do nothing */
5403 if(CURLE_OK == result) {
5405 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5407 ConnectionStore(data, conn);
5410 * Setup whatever necessary for a resumed transfer
5412 result = setup_range(data);
5414 DEBUGASSERT(conn->handler->done);
5415 /* we ignore the return code for the protocol-specific DONE */
5416 (void)conn->handler->done(conn, result, FALSE);
5420 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5421 -1, NULL); /* no upload */
5424 /* since we skip do_init() */
5431 /* Get a cloned copy of the SSL config situation stored in the
5432 connection struct. But to get this going nicely, we must first make
5433 sure that the strings in the master copy are pointing to the correct
5434 strings in the session handle strings array!
5436 Keep in mind that the pointers in the master copy are pointing to strings
5437 that will be freed as part of the SessionHandle struct, but all cloned
5438 copies will be separately allocated.
5440 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5441 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5442 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5443 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5444 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5445 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5446 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5448 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5449 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5452 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5453 result = CURLE_OUT_OF_MEMORY;
5457 /*************************************************************
5458 * Check the current list of connections to see if we can
5459 * re-use an already existing one or if we have to create a
5461 *************************************************************/
5463 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5464 we only acknowledge this option if this is not a re-used connection
5465 already (which happens due to follow-location or during a HTTP
5466 authentication phase). */
5467 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5470 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5472 /* If we found a reusable connection, we may still want to
5473 open a new connection if we are pipelining. */
5474 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5475 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5477 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5478 conn_temp->connection_id, pipelen);
5480 if(conn_temp->bundle->num_connections < max_host_connections &&
5481 data->state.conn_cache->num_connections < max_total_connections) {
5482 /* We want a new connection anyway */
5485 infof(data, "We can reuse, but we want a new connection anyway\n");
5492 * We already have a connection for this, we got the former connection
5493 * in the conn_temp variable and thus we need to cleanup the one we
5494 * just allocated before we can move along and use the previously
5497 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5498 handle in a multi stack may nick it */
5499 reuse_conn(conn, conn_temp);
5500 free(conn); /* we don't need this anymore */
5504 /* set a pointer to the hostname we display */
5505 fix_hostname(data, conn, &conn->host);
5507 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5508 conn->connection_id,
5509 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5512 /* We have decided that we want a new connection. However, we may not
5513 be able to do that if we have reached the limit of how many
5514 connections we are allowed to open. */
5515 struct connectbundle *bundle;
5517 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5519 if(max_host_connections > 0 && bundle &&
5520 (bundle->num_connections >= max_host_connections)) {
5521 struct connectdata *conn_candidate;
5523 /* The bundle is full. Let's see if we can kill a connection. */
5524 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5526 if(conn_candidate) {
5527 /* Set the connection's owner correctly, then kill it */
5528 conn_candidate->data = data;
5529 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5532 no_connections_available = TRUE;
5535 if(max_total_connections > 0 &&
5536 (data->state.conn_cache->num_connections >= max_total_connections)) {
5537 struct connectdata *conn_candidate;
5539 /* The cache is full. Let's see if we can kill a connection. */
5540 conn_candidate = find_oldest_idle_connection(data);
5542 if(conn_candidate) {
5543 /* Set the connection's owner correctly, then kill it */
5544 conn_candidate->data = data;
5545 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5548 no_connections_available = TRUE;
5552 if(no_connections_available) {
5553 infof(data, "No connections available.\n");
5558 result = CURLE_NO_CONNECTION_AVAILABLE;
5563 * This is a brand new connection, so let's store it in the connection
5566 ConnectionStore(data, conn);
5570 /* Mark the connection as used */
5573 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5577 * Setup whatever necessary for a resumed transfer
5579 result = setup_range(data);
5583 /* Continue connectdata initialization here. */
5586 * Inherit the proper values from the urldata struct AFTER we have arranged
5587 * the persistent connection stuff
5589 conn->fread_func = data->set.fread_func;
5590 conn->fread_in = data->set.in;
5591 conn->seek_func = data->set.seek_func;
5592 conn->seek_client = data->set.seek_client;
5594 /*************************************************************
5595 * Resolve the address of the server or proxy
5596 *************************************************************/
5597 result = resolve_server(data, conn, async);
5601 Curl_safefree(options);
5602 Curl_safefree(passwd);
5603 Curl_safefree(user);
5604 Curl_safefree(proxy);
5608 /* Curl_setup_conn() is called after the name resolve initiated in
5609 * create_conn() is all done.
5611 * Curl_setup_conn() also handles reused connections
5613 * conn->data MUST already have been setup fine (in create_conn)
5616 CURLcode Curl_setup_conn(struct connectdata *conn,
5617 bool *protocol_done)
5619 CURLcode result = CURLE_OK;
5620 struct SessionHandle *data = conn->data;
5622 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5624 if(conn->handler->flags & PROTOPT_NONETWORK) {
5625 /* nothing to setup when not using a network */
5626 *protocol_done = TRUE;
5629 *protocol_done = FALSE; /* default to not done */
5631 /* set proxy_connect_closed to false unconditionally already here since it
5632 is used strictly to provide extra information to a parent function in the
5633 case of proxy CONNECT failures and we must make sure we don't have it
5634 lingering set from a previous invoke */
5635 conn->bits.proxy_connect_closed = FALSE;
5638 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5639 * basically anything through a http proxy we can't limit this based on
5642 if(data->set.str[STRING_USERAGENT]) {
5643 Curl_safefree(conn->allocptr.uagent);
5644 conn->allocptr.uagent =
5645 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5646 if(!conn->allocptr.uagent)
5647 return CURLE_OUT_OF_MEMORY;
5650 data->req.headerbytecount = 0;
5652 #ifdef CURL_DO_LINEEND_CONV
5653 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5654 #endif /* CURL_DO_LINEEND_CONV */
5656 /* set start time here for timeout purposes in the connect procedure, it
5657 is later set again for the progress meter purpose */
5658 conn->now = Curl_tvnow();
5660 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5661 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5662 result = Curl_connecthost(conn, conn->dns_entry);
5667 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5668 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5669 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5670 *protocol_done = TRUE;
5671 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5672 Curl_verboseconnect(conn);
5675 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5676 set this here perhaps a second time */
5680 * This check is quite a hack. We're calling _fsetmode to fix the problem
5681 * with fwrite converting newline characters (you get mangled text files,
5682 * and corrupted binary files when you download to stdout and redirect it to
5686 if((data->set.out)->_handle == NULL) {
5687 _fsetmode(stdout, "b");
5694 CURLcode Curl_connect(struct SessionHandle *data,
5695 struct connectdata **in_connect,
5697 bool *protocol_done)
5701 *asyncp = FALSE; /* assume synchronous resolves by default */
5703 /* call the stuff that needs to be called */
5704 code = create_conn(data, in_connect, asyncp);
5706 if(CURLE_OK == code) {
5708 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5710 *protocol_done = TRUE;
5712 /* DNS resolution is done: that's either because this is a reused
5713 connection, in which case DNS was unnecessary, or because DNS
5714 really did finish already (synch resolver/fast async resolve) */
5715 code = Curl_setup_conn(*in_connect, protocol_done);
5719 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5724 if(code && *in_connect) {
5725 /* We're not allowed to return failure with memory left allocated
5726 in the connectdata struct, free those here */
5727 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5728 *in_connect = NULL; /* return a NULL */
5734 CURLcode Curl_done(struct connectdata **connp,
5735 CURLcode status, /* an error if this is called after an
5736 error was detected */
5740 struct connectdata *conn;
5741 struct SessionHandle *data;
5743 DEBUGASSERT(*connp);
5749 /* Stop if Curl_done() has already been called */
5752 Curl_getoff_all_pipelines(data, conn);
5754 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5755 !data->set.reuse_forbid &&
5757 /* Stop if pipeline is not empty and we do not have to close
5761 conn->bits.done = TRUE; /* called just now! */
5763 /* Cleanup possible redirect junk */
5764 if(data->req.newurl) {
5765 free(data->req.newurl);
5766 data->req.newurl = NULL;
5768 if(data->req.location) {
5769 free(data->req.location);
5770 data->req.location = NULL;
5773 Curl_resolver_cancel(conn);
5775 if(conn->dns_entry) {
5776 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5777 conn->dns_entry = NULL;
5781 case CURLE_ABORTED_BY_CALLBACK:
5782 case CURLE_READ_ERROR:
5783 case CURLE_WRITE_ERROR:
5784 /* When we're aborted due to a callback return code it basically have to
5785 be counted as premature as there is trouble ahead if we don't. We have
5786 many callbacks and protocols work differently, we could potentially do
5787 this more fine-grained in the future. */
5793 /* this calls the protocol-specific function pointer previously set */
5794 if(conn->handler->done)
5795 result = conn->handler->done(conn, status, premature);
5799 if(Curl_pgrsDone(conn) && !result)
5800 result = CURLE_ABORTED_BY_CALLBACK;
5802 /* if the transfer was completed in a paused state there can be buffered
5803 data left to write and then kill */
5804 if(data->state.tempwrite) {
5805 free(data->state.tempwrite);
5806 data->state.tempwrite = NULL;
5809 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5810 forced us to close this no matter what we think.
5812 if conn->bits.close is TRUE, it means that the connection should be
5813 closed in spite of all our efforts to be nice, due to protocol
5814 restrictions in our or the server's end
5816 if premature is TRUE, it means this connection was said to be DONE before
5817 the entire request operation is complete and thus we can't know in what
5818 state it is for re-using, so we're forced to close it. In a perfect world
5819 we can add code that keep track of if we really must close it here or not,
5820 but currently we have no such detail knowledge.
5822 if(data->set.reuse_forbid || conn->bits.close || premature) {
5823 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5825 /* If we had an error already, make sure we return that one. But
5826 if we got a new error, return that. */
5831 /* the connection is no longer in use */
5832 if(ConnectionDone(data, conn)) {
5833 /* remember the most recently used connection */
5834 data->state.lastconnect = conn;
5836 infof(data, "Connection #%ld to host %s left intact\n",
5837 conn->connection_id,
5838 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5841 data->state.lastconnect = NULL;
5844 *connp = NULL; /* to make the caller of this function better detect that
5845 this was either closed or handed over to the connection
5846 cache here, and therefore cannot be used from this point on
5848 Curl_free_request_state(data);
5854 * do_init() inits the readwrite session. This is inited each time (in the DO
5855 * function before the protocol-specific DO functions are invoked) for a
5856 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5857 * nothing in here depends on stuff that are setup dynamically for the
5861 static CURLcode do_init(struct connectdata *conn)
5863 struct SessionHandle *data = conn->data;
5864 struct SingleRequest *k = &data->req;
5866 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5867 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5868 data->state.expect100header = FALSE;
5870 if(data->set.opt_no_body)
5871 /* in HTTP lingo, no body means using the HEAD request... */
5872 data->set.httpreq = HTTPREQ_HEAD;
5873 else if(HTTPREQ_HEAD == data->set.httpreq)
5874 /* ... but if unset there really is no perfect method that is the
5875 "opposite" of HEAD but in reality most people probably think GET
5876 then. The important thing is that we can't let it remain HEAD if the
5877 opt_no_body is set FALSE since then we'll behave wrong when getting
5879 data->set.httpreq = HTTPREQ_GET;
5881 k->start = Curl_tvnow(); /* start time */
5882 k->now = k->start; /* current time is now */
5883 k->header = TRUE; /* assume header */
5887 k->buf = data->state.buffer;
5888 k->uploadbuf = data->state.uploadbuffer;
5889 k->hbufp = data->state.headerbuff;
5890 k->ignorebody=FALSE;
5892 Curl_speedinit(data);
5894 Curl_pgrsSetUploadCounter(data, 0);
5895 Curl_pgrsSetDownloadCounter(data, 0);
5901 * do_complete is called when the DO actions are complete.
5903 * We init chunking and trailer bits to their default values here immediately
5904 * before receiving any header data for the current request in the pipeline.
5906 static void do_complete(struct connectdata *conn)
5908 conn->data->req.chunk=FALSE;
5909 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5910 conn->sockfd:conn->writesockfd)+1;
5911 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5914 CURLcode Curl_do(struct connectdata **connp, bool *done)
5916 CURLcode result=CURLE_OK;
5917 struct connectdata *conn = *connp;
5918 struct SessionHandle *data = conn->data;
5920 if(conn->handler->do_it) {
5921 /* generic protocol-specific function pointer set in curl_connect() */
5922 result = conn->handler->do_it(conn, done);
5924 /* This was formerly done in transfer.c, but we better do it here */
5925 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5927 * If the connection is using an easy handle, call reconnect
5928 * to re-establish the connection. Otherwise, let the multi logic
5929 * figure out how to re-establish the connection.
5932 result = Curl_reconnect_request(connp);
5934 if(result == CURLE_OK) {
5935 /* ... finally back to actually retry the DO phase */
5936 conn = *connp; /* re-assign conn since Curl_reconnect_request
5937 creates a new connection */
5938 result = conn->handler->do_it(conn, done);
5945 if((result == CURLE_OK) && *done)
5946 /* do_complete must be called after the protocol-specific DO function */
5953 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5954 * second stage DO state which (wrongly) was introduced to support FTP's
5955 * second connection.
5957 * TODO: A future libcurl should be able to work away this state.
5959 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5960 * DOING state there's more work to do!
5963 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5965 CURLcode result=CURLE_OK;
5969 if(conn->handler->do_more)
5970 result = conn->handler->do_more(conn, complete);
5972 if(!result && (*complete == 1))
5973 /* do_complete must be called after the protocol-specific DO function */