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->infilesize = -1; /* we don't know any 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_HTTP200ALIASES:
1086 * Set a list of aliases for HTTP 200 in response header
1088 data->set.http200aliases = va_arg(param, struct curl_slist *);
1091 #if !defined(CURL_DISABLE_COOKIES)
1092 case CURLOPT_COOKIE:
1094 * Cookie string to send to the remote server in the request.
1096 result = setstropt(&data->set.str[STRING_COOKIE],
1097 va_arg(param, char *));
1100 case CURLOPT_COOKIEFILE:
1102 * Set cookie file to read and parse. Can be used multiple times.
1104 argptr = (char *)va_arg(param, void *);
1106 struct curl_slist *cl;
1107 /* append the cookie file name to the list of file names, and deal with
1109 cl = curl_slist_append(data->change.cookielist, argptr);
1111 curl_slist_free_all(data->change.cookielist);
1112 data->change.cookielist = NULL;
1113 return CURLE_OUT_OF_MEMORY;
1115 data->change.cookielist = cl; /* store the list for later use */
1119 case CURLOPT_COOKIEJAR:
1121 * Set cookie file name to dump all cookies to when we're done.
1123 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1124 va_arg(param, char *));
1127 * Activate the cookie parser. This may or may not already
1130 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1131 data->set.cookiesession);
1134 case CURLOPT_COOKIESESSION:
1136 * Set this option to TRUE to start a new "cookie session". It will
1137 * prevent the forthcoming read-cookies-from-file actions to accept
1138 * cookies that are marked as being session cookies, as they belong to a
1141 * In the original Netscape cookie spec, "session cookies" are cookies
1142 * with no expire date set. RFC2109 describes the same action if no
1143 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1144 * a 'Discard' action that can enforce the discard even for cookies that
1147 * We run mostly with the original cookie spec, as hardly anyone implements
1150 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1153 case CURLOPT_COOKIELIST:
1154 argptr = va_arg(param, char *);
1159 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1161 if(Curl_raw_equal(argptr, "ALL")) {
1162 /* clear all cookies */
1163 Curl_cookie_clearall(data->cookies);
1165 else if(Curl_raw_equal(argptr, "SESS")) {
1166 /* clear session cookies */
1167 Curl_cookie_clearsess(data->cookies);
1169 else if(Curl_raw_equal(argptr, "FLUSH")) {
1170 /* flush cookies to file */
1171 Curl_flush_cookies(data, 0);
1175 /* if cookie engine was not running, activate it */
1176 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1178 argptr = strdup(argptr);
1180 result = CURLE_OUT_OF_MEMORY;
1184 if(checkprefix("Set-Cookie:", argptr))
1185 /* HTTP Header format line */
1186 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1189 /* Netscape format line */
1190 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1195 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1198 #endif /* CURL_DISABLE_COOKIES */
1200 case CURLOPT_HTTPGET:
1202 * Set to force us do HTTP GET
1204 if(va_arg(param, long)) {
1205 data->set.httpreq = HTTPREQ_GET;
1206 data->set.upload = FALSE; /* switch off upload */
1207 data->set.opt_no_body = FALSE; /* this is implied */
1211 case CURLOPT_HTTP_VERSION:
1213 * This sets a requested HTTP version to be used. The value is one of
1214 * the listed enums in curl/curl.h.
1216 arg = va_arg(param, long);
1218 if(arg == CURL_HTTP_VERSION_2_0)
1219 return CURLE_UNSUPPORTED_PROTOCOL;
1221 data->set.httpversion = arg;
1224 case CURLOPT_HTTPAUTH:
1226 * Set HTTP Authentication type BITMASK.
1231 unsigned long auth = va_arg(param, unsigned long);
1233 if(auth == CURLAUTH_NONE) {
1234 data->set.httpauth = auth;
1238 /* the DIGEST_IE bit is only used to set a special marker, for all the
1239 rest we need to handle it as normal DIGEST */
1240 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1242 if(auth & CURLAUTH_DIGEST_IE) {
1243 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1244 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1247 /* switch off bits we can't support */
1249 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1250 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1251 #elif !defined(NTLM_WB_ENABLED)
1252 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1254 #ifndef USE_HTTP_NEGOTIATE
1255 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1259 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1262 while(bitcheck < 31) {
1263 if(auth & (1UL << bitcheck++)) {
1269 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1271 data->set.httpauth = auth;
1275 case CURLOPT_EXPECT_100_TIMEOUT_MS:
1277 * Time to wait for a response to a HTTP request containing an
1278 * Expect: 100-continue header before sending the data anyway.
1280 data->set.expect_100_timeout = va_arg(param, long);
1283 #endif /* CURL_DISABLE_HTTP */
1285 case CURLOPT_CUSTOMREQUEST:
1287 * Set a custom string to use as request
1289 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1290 va_arg(param, char *));
1293 data->set.httpreq = HTTPREQ_CUSTOM;
1294 here, we continue as if we were using the already set type
1295 and this just changes the actual request keyword */
1298 #ifndef CURL_DISABLE_PROXY
1299 case CURLOPT_HTTPPROXYTUNNEL:
1301 * Tunnel operations through the proxy instead of normal proxy use
1303 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1306 case CURLOPT_PROXYPORT:
1308 * Explicitly set HTTP proxy port number.
1310 data->set.proxyport = va_arg(param, long);
1313 case CURLOPT_PROXYAUTH:
1315 * Set HTTP Authentication type BITMASK.
1320 unsigned long auth = va_arg(param, unsigned long);
1322 if(auth == CURLAUTH_NONE) {
1323 data->set.proxyauth = auth;
1327 /* the DIGEST_IE bit is only used to set a special marker, for all the
1328 rest we need to handle it as normal DIGEST */
1329 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1331 if(auth & CURLAUTH_DIGEST_IE) {
1332 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1333 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1335 /* switch off bits we can't support */
1337 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1338 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1339 #elif !defined(NTLM_WB_ENABLED)
1340 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1342 #ifndef USE_HTTP_NEGOTIATE
1343 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1347 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1350 while(bitcheck < 31) {
1351 if(auth & (1UL << bitcheck++)) {
1357 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1359 data->set.proxyauth = auth;
1365 * Set proxy server:port to use as HTTP proxy.
1367 * If the proxy is set to "" we explicitly say that we don't want to use a
1368 * proxy (even though there might be environment variables saying so).
1370 * Setting it to NULL, means no proxy but allows the environment variables
1373 result = setstropt(&data->set.str[STRING_PROXY],
1374 va_arg(param, char *));
1377 case CURLOPT_PROXYTYPE:
1379 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1381 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1384 case CURLOPT_PROXY_TRANSFER_MODE:
1386 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1388 switch (va_arg(param, long)) {
1390 data->set.proxy_transfer_mode = FALSE;
1393 data->set.proxy_transfer_mode = TRUE;
1396 /* reserve other values for future use */
1397 result = CURLE_UNKNOWN_OPTION;
1401 #endif /* CURL_DISABLE_PROXY */
1403 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1404 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1406 * Set gssapi service name
1408 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1409 va_arg(param, char *));
1412 case CURLOPT_SOCKS5_GSSAPI_NEC:
1414 * set flag for nec socks5 support
1416 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1420 case CURLOPT_WRITEHEADER:
1422 * Custom pointer to pass the header write callback function
1424 data->set.writeheader = (void *)va_arg(param, void *);
1426 case CURLOPT_ERRORBUFFER:
1428 * Error buffer provided by the caller to get the human readable
1431 data->set.errorbuffer = va_arg(param, char *);
1435 * FILE pointer to write to. Or possibly
1436 * used as argument to the write callback.
1438 data->set.out = va_arg(param, void *);
1440 case CURLOPT_FTPPORT:
1442 * Use FTP PORT, this also specifies which IP address to use
1444 result = setstropt(&data->set.str[STRING_FTPPORT],
1445 va_arg(param, char *));
1446 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1450 case CURLOPT_FTP_USE_EPRT:
1451 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1454 case CURLOPT_FTP_USE_EPSV:
1455 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1458 case CURLOPT_FTP_USE_PRET:
1459 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1462 case CURLOPT_FTP_SSL_CCC:
1463 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1466 case CURLOPT_FTP_SKIP_PASV_IP:
1468 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1469 * bypass of the IP address in PASV responses.
1471 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1474 case CURLOPT_INFILE:
1476 * FILE pointer to read the file to be uploaded from. Or possibly
1477 * used as argument to the read callback.
1479 data->set.in = va_arg(param, void *);
1481 case CURLOPT_INFILESIZE:
1483 * If known, this should inform curl about the file size of the
1484 * to-be-uploaded file.
1486 data->set.infilesize = va_arg(param, long);
1488 case CURLOPT_INFILESIZE_LARGE:
1490 * If known, this should inform curl about the file size of the
1491 * to-be-uploaded file.
1493 data->set.infilesize = va_arg(param, curl_off_t);
1495 case CURLOPT_LOW_SPEED_LIMIT:
1497 * The low speed limit that if transfers are below this for
1498 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1500 data->set.low_speed_limit=va_arg(param, long);
1502 case CURLOPT_MAX_SEND_SPEED_LARGE:
1504 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1505 * bytes per second the transfer is throttled..
1507 data->set.max_send_speed=va_arg(param, curl_off_t);
1509 case CURLOPT_MAX_RECV_SPEED_LARGE:
1511 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1512 * second the transfer is throttled..
1514 data->set.max_recv_speed=va_arg(param, curl_off_t);
1516 case CURLOPT_LOW_SPEED_TIME:
1518 * The low speed time that if transfers are below the set
1519 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1521 data->set.low_speed_time=va_arg(param, long);
1527 if(data->change.url_alloc) {
1528 /* the already set URL is allocated, free it first! */
1529 Curl_safefree(data->change.url);
1530 data->change.url_alloc = FALSE;
1532 result = setstropt(&data->set.str[STRING_SET_URL],
1533 va_arg(param, char *));
1534 data->change.url = data->set.str[STRING_SET_URL];
1538 * The port number to use when getting the URL
1540 data->set.use_port = va_arg(param, long);
1542 case CURLOPT_TIMEOUT:
1544 * The maximum time you allow curl to use for a single transfer
1547 data->set.timeout = va_arg(param, long) * 1000L;
1550 case CURLOPT_TIMEOUT_MS:
1551 data->set.timeout = va_arg(param, long);
1554 case CURLOPT_CONNECTTIMEOUT:
1556 * The maximum time you allow curl to use to connect.
1558 data->set.connecttimeout = va_arg(param, long) * 1000L;
1561 case CURLOPT_CONNECTTIMEOUT_MS:
1562 data->set.connecttimeout = va_arg(param, long);
1565 case CURLOPT_ACCEPTTIMEOUT_MS:
1567 * The maximum time you allow curl to wait for server connect
1569 data->set.accepttimeout = va_arg(param, long);
1572 case CURLOPT_USERPWD:
1574 * user:password to use in the operation
1576 result = setstropt_userpwd(va_arg(param, char *),
1577 &data->set.str[STRING_USERNAME],
1578 &data->set.str[STRING_PASSWORD]);
1581 case CURLOPT_USERNAME:
1583 * authentication user name to use in the operation
1585 result = setstropt(&data->set.str[STRING_USERNAME],
1586 va_arg(param, char *));
1589 case CURLOPT_PASSWORD:
1591 * authentication password to use in the operation
1593 result = setstropt(&data->set.str[STRING_PASSWORD],
1594 va_arg(param, char *));
1597 case CURLOPT_LOGIN_OPTIONS:
1599 * authentication options to use in the operation
1601 result = setstropt(&data->set.str[STRING_OPTIONS],
1602 va_arg(param, char *));
1605 case CURLOPT_XOAUTH2_BEARER:
1607 * XOAUTH2 bearer token to use in the operation
1609 result = setstropt(&data->set.str[STRING_BEARER],
1610 va_arg(param, char *));
1613 case CURLOPT_POSTQUOTE:
1615 * List of RAW FTP commands to use after a transfer
1617 data->set.postquote = va_arg(param, struct curl_slist *);
1619 case CURLOPT_PREQUOTE:
1621 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1623 data->set.prequote = va_arg(param, struct curl_slist *);
1627 * List of RAW FTP commands to use before a transfer
1629 data->set.quote = va_arg(param, struct curl_slist *);
1631 case CURLOPT_RESOLVE:
1633 * List of NAME:[address] names to populate the DNS cache with
1634 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1636 * Names added with this API will remain in the cache until explicitly
1637 * removed or the handle is cleaned up.
1639 * This API can remove any name from the DNS cache, but only entries
1640 * that aren't actually in use right now will be pruned immediately.
1642 data->set.resolve = va_arg(param, struct curl_slist *);
1643 data->change.resolve = data->set.resolve;
1645 case CURLOPT_PROGRESSFUNCTION:
1647 * Progress callback function
1649 data->set.fprogress = va_arg(param, curl_progress_callback);
1650 if(data->set.fprogress)
1651 data->progress.callback = TRUE; /* no longer internal */
1653 data->progress.callback = FALSE; /* NULL enforces internal */
1656 case CURLOPT_XFERINFOFUNCTION:
1658 * Transfer info callback function
1660 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1661 if(data->set.fxferinfo)
1662 data->progress.callback = TRUE; /* no longer internal */
1664 data->progress.callback = FALSE; /* NULL enforces internal */
1668 case CURLOPT_PROGRESSDATA:
1670 * Custom client data to pass to the progress callback
1672 data->set.progress_client = va_arg(param, void *);
1675 #ifndef CURL_DISABLE_PROXY
1676 case CURLOPT_PROXYUSERPWD:
1678 * user:password needed to use the proxy
1680 result = setstropt_userpwd(va_arg(param, char *),
1681 &data->set.str[STRING_PROXYUSERNAME],
1682 &data->set.str[STRING_PROXYPASSWORD]);
1684 case CURLOPT_PROXYUSERNAME:
1686 * authentication user name to use in the operation
1688 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1689 va_arg(param, char *));
1691 case CURLOPT_PROXYPASSWORD:
1693 * authentication password to use in the operation
1695 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1696 va_arg(param, char *));
1698 case CURLOPT_NOPROXY:
1700 * proxy exception list
1702 result = setstropt(&data->set.str[STRING_NOPROXY],
1703 va_arg(param, char *));
1709 * What range of the file you want to transfer
1711 result = setstropt(&data->set.str[STRING_SET_RANGE],
1712 va_arg(param, char *));
1714 case CURLOPT_RESUME_FROM:
1716 * Resume transfer at the give file position
1718 data->set.set_resume_from = va_arg(param, long);
1720 case CURLOPT_RESUME_FROM_LARGE:
1722 * Resume transfer at the give file position
1724 data->set.set_resume_from = va_arg(param, curl_off_t);
1726 case CURLOPT_DEBUGFUNCTION:
1728 * stderr write callback.
1730 data->set.fdebug = va_arg(param, curl_debug_callback);
1732 * if the callback provided is NULL, it'll use the default callback
1735 case CURLOPT_DEBUGDATA:
1737 * Set to a void * that should receive all error writes. This
1738 * defaults to CURLOPT_STDERR for normal operations.
1740 data->set.debugdata = va_arg(param, void *);
1742 case CURLOPT_STDERR:
1744 * Set to a FILE * that should receive all error writes. This
1745 * defaults to stderr for normal operations.
1747 data->set.err = va_arg(param, FILE *);
1749 data->set.err = stderr;
1751 case CURLOPT_HEADERFUNCTION:
1753 * Set header write callback
1755 data->set.fwrite_header = va_arg(param, curl_write_callback);
1757 case CURLOPT_WRITEFUNCTION:
1759 * Set data write callback
1761 data->set.fwrite_func = va_arg(param, curl_write_callback);
1762 if(!data->set.fwrite_func) {
1763 data->set.is_fwrite_set = 0;
1764 /* When set to NULL, reset to our internal default function */
1765 data->set.fwrite_func = (curl_write_callback)fwrite;
1768 data->set.is_fwrite_set = 1;
1770 case CURLOPT_READFUNCTION:
1772 * Read data callback
1774 data->set.fread_func = va_arg(param, curl_read_callback);
1775 if(!data->set.fread_func) {
1776 data->set.is_fread_set = 0;
1777 /* When set to NULL, reset to our internal default function */
1778 data->set.fread_func = (curl_read_callback)fread;
1781 data->set.is_fread_set = 1;
1783 case CURLOPT_SEEKFUNCTION:
1785 * Seek callback. Might be NULL.
1787 data->set.seek_func = va_arg(param, curl_seek_callback);
1789 case CURLOPT_SEEKDATA:
1791 * Seek control callback. Might be NULL.
1793 data->set.seek_client = va_arg(param, void *);
1795 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1797 * "Convert from network encoding" callback
1799 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1801 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1803 * "Convert to network encoding" callback
1805 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1807 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1809 * "Convert from UTF-8 encoding" callback
1811 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1813 case CURLOPT_IOCTLFUNCTION:
1815 * I/O control callback. Might be NULL.
1817 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1819 case CURLOPT_IOCTLDATA:
1821 * I/O control data pointer. Might be NULL.
1823 data->set.ioctl_client = va_arg(param, void *);
1825 case CURLOPT_SSLCERT:
1827 * String that holds file name of the SSL certificate to use
1829 result = setstropt(&data->set.str[STRING_CERT],
1830 va_arg(param, char *));
1832 case CURLOPT_SSLCERTTYPE:
1834 * String that holds file type of the SSL certificate to use
1836 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1837 va_arg(param, char *));
1839 case CURLOPT_SSLKEY:
1841 * String that holds file name of the SSL key to use
1843 result = setstropt(&data->set.str[STRING_KEY],
1844 va_arg(param, char *));
1846 case CURLOPT_SSLKEYTYPE:
1848 * String that holds file type of the SSL key to use
1850 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1851 va_arg(param, char *));
1853 case CURLOPT_KEYPASSWD:
1855 * String that holds the SSL or SSH private key password.
1857 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1858 va_arg(param, char *));
1860 case CURLOPT_SSLENGINE:
1862 * String that holds the SSL crypto engine.
1864 argptr = va_arg(param, char *);
1865 if(argptr && argptr[0])
1866 result = Curl_ssl_set_engine(data, argptr);
1869 case CURLOPT_SSLENGINE_DEFAULT:
1871 * flag to set engine as default.
1873 result = Curl_ssl_set_engine_default(data);
1877 * Kludgy option to enable CRLF conversions. Subject for removal.
1879 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1882 case CURLOPT_INTERFACE:
1884 * Set what interface or address/hostname to bind the socket to when
1885 * performing an operation and thus what from-IP your connection will use.
1887 result = setstropt(&data->set.str[STRING_DEVICE],
1888 va_arg(param, char *));
1890 case CURLOPT_LOCALPORT:
1892 * Set what local port to bind the socket to when performing an operation.
1894 data->set.localport = curlx_sltous(va_arg(param, long));
1896 case CURLOPT_LOCALPORTRANGE:
1898 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1900 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1902 case CURLOPT_KRBLEVEL:
1904 * A string that defines the kerberos security level.
1906 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1907 va_arg(param, char *));
1908 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1910 case CURLOPT_GSSAPI_DELEGATION:
1912 * GSSAPI credential delegation
1914 data->set.gssapi_delegation = va_arg(param, long);
1916 case CURLOPT_SSL_VERIFYPEER:
1918 * Enable peer SSL verifying.
1920 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1922 case CURLOPT_SSL_VERIFYHOST:
1924 * Enable verification of the host name in the peer certificate
1926 arg = va_arg(param, long);
1928 /* Obviously people are not reading documentation and too many thought
1929 this argument took a boolean when it wasn't and misused it. We thus ban
1930 1 as a sensible input and we warn about its use. Then we only have the
1931 2 action internally stored as TRUE. */
1934 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1935 return CURLE_BAD_FUNCTION_ARGUMENT;
1938 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1941 /* since these two options are only possible to use on an OpenSSL-
1942 powered libcurl we #ifdef them on this condition so that libcurls
1943 built against other SSL libs will return a proper error when trying
1944 to set this option! */
1945 case CURLOPT_SSL_CTX_FUNCTION:
1947 * Set a SSL_CTX callback
1949 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1951 case CURLOPT_SSL_CTX_DATA:
1953 * Set a SSL_CTX callback parameter pointer
1955 data->set.ssl.fsslctxp = va_arg(param, void *);
1958 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1960 case CURLOPT_CERTINFO:
1961 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1964 case CURLOPT_CAINFO:
1966 * Set CA info for SSL connection. Specify file name of the CA certificate
1968 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1969 va_arg(param, char *));
1971 case CURLOPT_CAPATH:
1973 * Set CA path info for SSL connection. Specify directory name of the CA
1974 * certificates which have been prepared using openssl c_rehash utility.
1976 /* This does not work on windows. */
1977 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1978 va_arg(param, char *));
1980 case CURLOPT_CRLFILE:
1982 * Set CRL file info for SSL connection. Specify file name of the CRL
1983 * to check certificates revocation
1985 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1986 va_arg(param, char *));
1988 case CURLOPT_ISSUERCERT:
1990 * Set Issuer certificate file
1991 * to check certificates issuer
1993 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1994 va_arg(param, char *));
1996 case CURLOPT_TELNETOPTIONS:
1998 * Set a linked list of telnet options
2000 data->set.telnet_options = va_arg(param, struct curl_slist *);
2003 case CURLOPT_BUFFERSIZE:
2005 * The application kindly asks for a differently sized receive buffer.
2006 * If it seems reasonable, we'll use it.
2008 data->set.buffer_size = va_arg(param, long);
2010 if((data->set.buffer_size> (BUFSIZE -1 )) ||
2011 (data->set.buffer_size < 1))
2012 data->set.buffer_size = 0; /* huge internal default */
2016 case CURLOPT_NOSIGNAL:
2018 * The application asks not to set any signal() or alarm() handlers,
2019 * even when using a timeout.
2021 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2026 struct Curl_share *set;
2027 set = va_arg(param, struct Curl_share *);
2029 /* disconnect from old share, if any */
2031 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2033 if(data->dns.hostcachetype == HCACHE_SHARED) {
2034 data->dns.hostcache = NULL;
2035 data->dns.hostcachetype = HCACHE_NONE;
2038 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2039 if(data->share->cookies == data->cookies)
2040 data->cookies = NULL;
2043 if(data->share->sslsession == data->state.session)
2044 data->state.session = NULL;
2046 data->share->dirty--;
2048 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2052 /* use new share if it set */
2056 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2058 data->share->dirty++;
2060 if(data->share->hostcache) {
2061 /* use shared host cache */
2062 data->dns.hostcache = data->share->hostcache;
2063 data->dns.hostcachetype = HCACHE_SHARED;
2065 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2066 if(data->share->cookies) {
2067 /* use shared cookie list, first free own one if any */
2069 Curl_cookie_cleanup(data->cookies);
2070 /* enable cookies since we now use a share that uses cookies! */
2071 data->cookies = data->share->cookies;
2073 #endif /* CURL_DISABLE_HTTP */
2074 if(data->share->sslsession) {
2075 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2076 data->state.session = data->share->sslsession;
2078 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2081 /* check for host cache not needed,
2082 * it will be done by curl_easy_perform */
2086 case CURLOPT_PRIVATE:
2088 * Set private data pointer.
2090 data->set.private_data = va_arg(param, void *);
2093 case CURLOPT_MAXFILESIZE:
2095 * Set the maximum size of a file to download.
2097 data->set.max_filesize = va_arg(param, long);
2101 case CURLOPT_USE_SSL:
2103 * Make transfers attempt to use SSL/TLS.
2105 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2108 case CURLOPT_SSL_OPTIONS:
2109 arg = va_arg(param, long);
2110 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2114 case CURLOPT_FTPSSLAUTH:
2116 * Set a specific auth for FTP-SSL transfers.
2118 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2121 case CURLOPT_IPRESOLVE:
2122 data->set.ipver = va_arg(param, long);
2125 case CURLOPT_MAXFILESIZE_LARGE:
2127 * Set the maximum size of a file to download.
2129 data->set.max_filesize = va_arg(param, curl_off_t);
2132 case CURLOPT_TCP_NODELAY:
2134 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2137 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2140 case CURLOPT_FTP_ACCOUNT:
2141 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2142 va_arg(param, char *));
2145 case CURLOPT_IGNORE_CONTENT_LENGTH:
2146 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2149 case CURLOPT_CONNECT_ONLY:
2151 * No data transfer, set up connection and let application use the socket
2153 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2156 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2157 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2158 va_arg(param, char *));
2161 case CURLOPT_SOCKOPTFUNCTION:
2163 * socket callback function: called after socket() but before connect()
2165 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2168 case CURLOPT_SOCKOPTDATA:
2170 * socket callback data pointer. Might be NULL.
2172 data->set.sockopt_client = va_arg(param, void *);
2175 case CURLOPT_OPENSOCKETFUNCTION:
2177 * open/create socket callback function: called instead of socket(),
2180 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2183 case CURLOPT_OPENSOCKETDATA:
2185 * socket callback data pointer. Might be NULL.
2187 data->set.opensocket_client = va_arg(param, void *);
2190 case CURLOPT_CLOSESOCKETFUNCTION:
2192 * close socket callback function: called instead of close()
2193 * when shutting down a connection
2195 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2198 case CURLOPT_CLOSESOCKETDATA:
2200 * socket callback data pointer. Might be NULL.
2202 data->set.closesocket_client = va_arg(param, void *);
2205 case CURLOPT_SSL_SESSIONID_CACHE:
2206 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2210 /* we only include SSH options if explicitly built to support SSH */
2211 case CURLOPT_SSH_AUTH_TYPES:
2212 data->set.ssh_auth_types = va_arg(param, long);
2215 case CURLOPT_SSH_PUBLIC_KEYFILE:
2217 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2219 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2220 va_arg(param, char *));
2223 case CURLOPT_SSH_PRIVATE_KEYFILE:
2225 * Use this file instead of the $HOME/.ssh/id_dsa file
2227 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2228 va_arg(param, char *));
2230 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2232 * Option to allow for the MD5 of the host public key to be checked
2233 * for validation purposes.
2235 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2236 va_arg(param, char *));
2238 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2239 case CURLOPT_SSH_KNOWNHOSTS:
2241 * Store the file name to read known hosts from.
2243 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2244 va_arg(param, char *));
2247 case CURLOPT_SSH_KEYFUNCTION:
2248 /* setting to NULL is fine since the ssh.c functions themselves will
2249 then rever to use the internal default */
2250 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2253 case CURLOPT_SSH_KEYDATA:
2255 * Custom client data to pass to the SSH keyfunc callback
2257 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2259 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2261 #endif /* USE_LIBSSH2 */
2263 case CURLOPT_HTTP_TRANSFER_DECODING:
2265 * disable libcurl transfer encoding is used
2267 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2270 case CURLOPT_HTTP_CONTENT_DECODING:
2272 * raw data passed to the application when content encoding is used
2274 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2277 case CURLOPT_NEW_FILE_PERMS:
2279 * Uses these permissions instead of 0644
2281 data->set.new_file_perms = va_arg(param, long);
2284 case CURLOPT_NEW_DIRECTORY_PERMS:
2286 * Uses these permissions instead of 0755
2288 data->set.new_directory_perms = va_arg(param, long);
2291 case CURLOPT_ADDRESS_SCOPE:
2293 * We always get longs when passed plain numericals, but for this value we
2294 * know that an unsigned int will always hold the value so we blindly
2295 * typecast to this type
2297 data->set.scope = curlx_sltoui(va_arg(param, long));
2300 case CURLOPT_PROTOCOLS:
2301 /* set the bitmask for the protocols that are allowed to be used for the
2302 transfer, which thus helps the app which takes URLs from users or other
2303 external inputs and want to restrict what protocol(s) to deal
2304 with. Defaults to CURLPROTO_ALL. */
2305 data->set.allowed_protocols = va_arg(param, long);
2308 case CURLOPT_REDIR_PROTOCOLS:
2309 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2310 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2311 to be set in both bitmasks to be allowed to get redirected to. Defaults
2312 to all protocols except FILE and SCP. */
2313 data->set.redir_protocols = va_arg(param, long);
2316 case CURLOPT_MAIL_FROM:
2317 /* Set the SMTP mail originator */
2318 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2319 va_arg(param, char *));
2322 case CURLOPT_MAIL_AUTH:
2323 /* Set the SMTP auth originator */
2324 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2325 va_arg(param, char *));
2328 case CURLOPT_MAIL_RCPT:
2329 /* Set the list of mail recipients */
2330 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2333 case CURLOPT_SASL_IR:
2334 /* Enable/disable SASL initial response */
2335 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2338 case CURLOPT_RTSP_REQUEST:
2341 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2342 * Would this be better if the RTSPREQ_* were just moved into here?
2344 long curl_rtspreq = va_arg(param, long);
2345 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2346 switch(curl_rtspreq) {
2347 case CURL_RTSPREQ_OPTIONS:
2348 rtspreq = RTSPREQ_OPTIONS;
2351 case CURL_RTSPREQ_DESCRIBE:
2352 rtspreq = RTSPREQ_DESCRIBE;
2355 case CURL_RTSPREQ_ANNOUNCE:
2356 rtspreq = RTSPREQ_ANNOUNCE;
2359 case CURL_RTSPREQ_SETUP:
2360 rtspreq = RTSPREQ_SETUP;
2363 case CURL_RTSPREQ_PLAY:
2364 rtspreq = RTSPREQ_PLAY;
2367 case CURL_RTSPREQ_PAUSE:
2368 rtspreq = RTSPREQ_PAUSE;
2371 case CURL_RTSPREQ_TEARDOWN:
2372 rtspreq = RTSPREQ_TEARDOWN;
2375 case CURL_RTSPREQ_GET_PARAMETER:
2376 rtspreq = RTSPREQ_GET_PARAMETER;
2379 case CURL_RTSPREQ_SET_PARAMETER:
2380 rtspreq = RTSPREQ_SET_PARAMETER;
2383 case CURL_RTSPREQ_RECORD:
2384 rtspreq = RTSPREQ_RECORD;
2387 case CURL_RTSPREQ_RECEIVE:
2388 rtspreq = RTSPREQ_RECEIVE;
2391 rtspreq = RTSPREQ_NONE;
2394 data->set.rtspreq = rtspreq;
2399 case CURLOPT_RTSP_SESSION_ID:
2401 * Set the RTSP Session ID manually. Useful if the application is
2402 * resuming a previously established RTSP session
2404 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2405 va_arg(param, char *));
2408 case CURLOPT_RTSP_STREAM_URI:
2410 * Set the Stream URI for the RTSP request. Unless the request is
2411 * for generic server options, the application will need to set this.
2413 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2414 va_arg(param, char *));
2417 case CURLOPT_RTSP_TRANSPORT:
2419 * The content of the Transport: header for the RTSP request
2421 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2422 va_arg(param, char *));
2425 case CURLOPT_RTSP_CLIENT_CSEQ:
2427 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2428 * application is resuming a previously broken connection. The CSEQ
2429 * will increment from this new number henceforth.
2431 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2434 case CURLOPT_RTSP_SERVER_CSEQ:
2435 /* Same as the above, but for server-initiated requests */
2436 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2439 case CURLOPT_INTERLEAVEDATA:
2440 data->set.rtp_out = va_arg(param, void *);
2442 case CURLOPT_INTERLEAVEFUNCTION:
2443 /* Set the user defined RTP write function */
2444 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2447 case CURLOPT_WILDCARDMATCH:
2448 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2450 case CURLOPT_CHUNK_BGN_FUNCTION:
2451 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2453 case CURLOPT_CHUNK_END_FUNCTION:
2454 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2456 case CURLOPT_FNMATCH_FUNCTION:
2457 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2459 case CURLOPT_CHUNK_DATA:
2460 data->wildcard.customptr = va_arg(param, void *);
2462 case CURLOPT_FNMATCH_DATA:
2463 data->set.fnmatch_data = va_arg(param, void *);
2466 case CURLOPT_TLSAUTH_USERNAME:
2467 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2468 va_arg(param, char *));
2469 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2470 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2472 case CURLOPT_TLSAUTH_PASSWORD:
2473 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2474 va_arg(param, char *));
2475 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2476 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2478 case CURLOPT_TLSAUTH_TYPE:
2479 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2480 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2482 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2485 case CURLOPT_DNS_SERVERS:
2486 result = Curl_set_dns_servers(data, va_arg(param, char *));
2488 case CURLOPT_DNS_INTERFACE:
2489 result = Curl_set_dns_interface(data, va_arg(param, char *));
2491 case CURLOPT_DNS_LOCAL_IP4:
2492 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2494 case CURLOPT_DNS_LOCAL_IP6:
2495 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2498 case CURLOPT_TCP_KEEPALIVE:
2499 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2501 case CURLOPT_TCP_KEEPIDLE:
2502 data->set.tcp_keepidle = va_arg(param, long);
2504 case CURLOPT_TCP_KEEPINTVL:
2505 data->set.tcp_keepintvl = va_arg(param, long);
2507 case CURLOPT_SSL_ENABLE_NPN:
2508 data->set.ssl_enable_npn = (0 != va_arg(param, long))?TRUE:FALSE;
2510 case CURLOPT_SSL_ENABLE_ALPN:
2511 data->set.ssl_enable_alpn = (0 != va_arg(param, long))?TRUE:FALSE;
2515 /* unknown tag and its companion, just ignore: */
2516 result = CURLE_UNKNOWN_OPTION;
2523 static void conn_free(struct connectdata *conn)
2528 /* possible left-overs from the async name resolvers */
2529 Curl_resolver_cancel(conn);
2531 /* close the SSL stuff before we close any sockets since they will/may
2532 write to the sockets */
2533 Curl_ssl_close(conn, FIRSTSOCKET);
2534 Curl_ssl_close(conn, SECONDARYSOCKET);
2536 /* close possibly still open sockets */
2537 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2538 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2539 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2540 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2541 if(CURL_SOCKET_BAD != conn->tempsock[0])
2542 Curl_closesocket(conn, conn->tempsock[0]);
2543 if(CURL_SOCKET_BAD != conn->tempsock[1])
2544 Curl_closesocket(conn, conn->tempsock[1]);
2546 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2547 Curl_ntlm_wb_cleanup(conn);
2550 Curl_safefree(conn->user);
2551 Curl_safefree(conn->passwd);
2552 Curl_safefree(conn->xoauth2_bearer);
2553 Curl_safefree(conn->options);
2554 Curl_safefree(conn->proxyuser);
2555 Curl_safefree(conn->proxypasswd);
2556 Curl_safefree(conn->allocptr.proxyuserpwd);
2557 Curl_safefree(conn->allocptr.uagent);
2558 Curl_safefree(conn->allocptr.userpwd);
2559 Curl_safefree(conn->allocptr.accept_encoding);
2560 Curl_safefree(conn->allocptr.te);
2561 Curl_safefree(conn->allocptr.rangeline);
2562 Curl_safefree(conn->allocptr.ref);
2563 Curl_safefree(conn->allocptr.host);
2564 Curl_safefree(conn->allocptr.cookiehost);
2565 Curl_safefree(conn->allocptr.rtsp_transport);
2566 Curl_safefree(conn->trailer);
2567 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2568 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2569 Curl_safefree(conn->master_buffer);
2571 Curl_llist_destroy(conn->send_pipe, NULL);
2572 Curl_llist_destroy(conn->recv_pipe, NULL);
2574 conn->send_pipe = NULL;
2575 conn->recv_pipe = NULL;
2577 Curl_safefree(conn->localdev);
2578 Curl_free_ssl_config(&conn->ssl_config);
2580 free(conn); /* free all the connection oriented data */
2583 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2585 struct SessionHandle *data;
2587 return CURLE_OK; /* this is closed and fine already */
2591 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2595 if(conn->dns_entry != NULL) {
2596 Curl_resolv_unlock(data, conn->dns_entry);
2597 conn->dns_entry = NULL;
2600 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2603 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2604 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2606 /* Authentication data is a mix of connection-related and sessionhandle-
2607 related stuff. NTLM is connection-related so when we close the shop
2611 data->state.authhost.done = FALSE;
2612 data->state.authhost.picked =
2613 data->state.authhost.want;
2616 if(has_proxy_ntlm) {
2617 data->state.authproxy.done = FALSE;
2618 data->state.authproxy.picked =
2619 data->state.authproxy.want;
2622 if(has_host_ntlm || has_proxy_ntlm)
2623 data->state.authproblem = FALSE;
2626 /* Cleanup NTLM connection-related data */
2627 Curl_http_ntlm_cleanup(conn);
2629 /* Cleanup possible redirect junk */
2630 if(data->req.newurl) {
2631 free(data->req.newurl);
2632 data->req.newurl = NULL;
2635 if(conn->handler->disconnect)
2636 /* This is set if protocol-specific cleanups should be made */
2637 conn->handler->disconnect(conn, dead_connection);
2639 /* unlink ourselves! */
2640 infof(data, "Closing connection %ld\n", conn->connection_id);
2641 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2643 #if defined(USE_LIBIDN)
2644 if(conn->host.encalloc)
2645 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2646 with idn_free() since this was allocated
2648 if(conn->proxy.encalloc)
2649 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2650 freed with idn_free() since this was
2651 allocated by libidn */
2652 #elif defined(USE_WIN32_IDN)
2653 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2654 idn_free() since this was allocated by
2655 curl_win32_idn_to_ascii */
2656 if(conn->proxy.encalloc)
2657 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2658 with idn_free() since this was allocated by
2659 curl_win32_idn_to_ascii */
2662 Curl_ssl_close(conn, FIRSTSOCKET);
2664 /* Indicate to all handles on the pipe that we're dead */
2665 if(Curl_multi_pipeline_enabled(data->multi)) {
2666 signalPipeClose(conn->send_pipe, TRUE);
2667 signalPipeClose(conn->recv_pipe, TRUE);
2672 Curl_speedinit(data);
2678 * This function should return TRUE if the socket is to be assumed to
2679 * be dead. Most commonly this happens when the server has closed the
2680 * connection due to inactivity.
2682 static bool SocketIsDead(curl_socket_t sock)
2685 bool ret_val = TRUE;
2687 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2695 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2696 const struct connectdata *conn)
2698 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2699 Curl_multi_pipeline_enabled(handle->multi) &&
2700 (handle->set.httpreq == HTTPREQ_GET ||
2701 handle->set.httpreq == HTTPREQ_HEAD) &&
2702 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2708 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2710 return Curl_multi_pipeline_enabled(handle->multi);
2713 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2714 struct curl_llist *pipeline)
2716 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2717 return CURLE_OUT_OF_MEMORY;
2721 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2722 struct curl_llist *pipeline)
2724 struct curl_llist_element *curr;
2726 curr = pipeline->head;
2728 if(curr->ptr == handle) {
2729 Curl_llist_remove(pipeline, curr, NULL);
2730 return 1; /* we removed a handle */
2738 #if 0 /* this code is saved here as it is useful for debugging purposes */
2739 static void Curl_printPipeline(struct curl_llist *pipeline)
2741 struct curl_llist_element *curr;
2743 curr = pipeline->head;
2745 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2746 infof(data, "Handle in pipeline: %s\n", data->state.path);
2752 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2754 struct curl_llist_element *curr = pipeline->head;
2756 return (struct SessionHandle *) curr->ptr;
2762 /* remove the specified connection from all (possible) pipelines and related
2764 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2765 struct connectdata *conn)
2767 bool recv_head = (conn->readchannel_inuse &&
2768 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2770 bool send_head = (conn->writechannel_inuse &&
2771 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2773 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2774 conn->readchannel_inuse = FALSE;
2775 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2776 conn->writechannel_inuse = FALSE;
2779 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2781 struct curl_llist_element *curr;
2786 curr = pipeline->head;
2788 struct curl_llist_element *next = curr->next;
2789 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2791 #ifdef DEBUGBUILD /* debug-only code */
2792 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2794 infof(data, "signalPipeClose() found BAAD easy handle\n");
2799 data->state.pipe_broke = TRUE;
2800 Curl_multi_handlePipeBreak(data);
2801 Curl_llist_remove(pipeline, curr, NULL);
2807 * This function finds the connection in the connection
2808 * cache that has been unused for the longest time.
2810 * Returns the pointer to the oldest idle connection, or NULL if none was
2813 static struct connectdata *
2814 find_oldest_idle_connection(struct SessionHandle *data)
2816 struct conncache *bc = data->state.conn_cache;
2817 struct curl_hash_iterator iter;
2818 struct curl_llist_element *curr;
2819 struct curl_hash_element *he;
2823 struct connectdata *conn_candidate = NULL;
2824 struct connectbundle *bundle;
2828 Curl_hash_start_iterate(bc->hash, &iter);
2830 he = Curl_hash_next_element(&iter);
2832 struct connectdata *conn;
2836 curr = bundle->conn_list->head;
2841 /* Set higher score for the age passed since the connection was used */
2842 score = Curl_tvdiff(now, conn->now);
2844 if(score > highscore) {
2846 conn_candidate = conn;
2852 he = Curl_hash_next_element(&iter);
2855 return conn_candidate;
2859 * This function finds the connection in the connection
2860 * bundle that has been unused for the longest time.
2862 * Returns the pointer to the oldest idle connection, or NULL if none was
2865 static struct connectdata *
2866 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2867 struct connectbundle *bundle)
2869 struct curl_llist_element *curr;
2873 struct connectdata *conn_candidate = NULL;
2874 struct connectdata *conn;
2880 curr = bundle->conn_list->head;
2885 /* Set higher score for the age passed since the connection was used */
2886 score = Curl_tvdiff(now, conn->now);
2888 if(score > highscore) {
2890 conn_candidate = conn;
2896 return conn_candidate;
2900 * Given one filled in connection struct (named needle), this function should
2901 * detect if there already is one that has all the significant details
2902 * exactly the same and thus should be used instead.
2904 * If there is a match, this function returns TRUE - and has marked the
2905 * connection as 'in-use'. It must later be called with ConnectionDone() to
2906 * return back to 'idle' (unused) state.
2908 * The force_reuse flag is set if the connection must be used, even if
2909 * the pipelining strategy wants to open a new connection instead of reusing.
2912 ConnectionExists(struct SessionHandle *data,
2913 struct connectdata *needle,
2914 struct connectdata **usethis,
2917 struct connectdata *check;
2918 struct connectdata *chosen = 0;
2919 bool canPipeline = IsPipeliningPossible(data, needle);
2920 bool wantNTLMhttp = ((data->state.authhost.want & CURLAUTH_NTLM) ||
2921 (data->state.authhost.want & CURLAUTH_NTLM_WB)) &&
2922 (needle->handler->protocol & CURLPROTO_HTTP) ? TRUE : FALSE;
2923 struct connectbundle *bundle;
2925 *force_reuse = FALSE;
2927 /* We can't pipe if the site is blacklisted */
2928 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2929 canPipeline = FALSE;
2932 /* Look up the bundle with all the connections to this
2934 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2937 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2938 size_t best_pipe_len = max_pipe_len;
2939 struct curl_llist_element *curr;
2941 infof(data, "Found bundle for host %s: %p\n",
2942 needle->host.name, (void *)bundle);
2944 /* We can't pipe if we don't know anything about the server */
2945 if(canPipeline && !bundle->server_supports_pipelining) {
2946 infof(data, "Server doesn't support pipelining\n");
2947 canPipeline = FALSE;
2950 curr = bundle->conn_list->head;
2953 bool credentialsMatch = FALSE;
2957 * Note that if we use a HTTP proxy, we check connections to that
2958 * proxy and not to the actual remote server.
2963 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2965 if(!pipeLen && !check->inuse) {
2966 /* The check for a dead socket makes sense only if there are no
2967 handles in pipeline and the connection isn't already marked in
2970 if(check->handler->protocol & CURLPROTO_RTSP)
2971 /* RTSP is a special case due to RTP interleaving */
2972 dead = Curl_rtsp_connisdead(check);
2974 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2978 infof(data, "Connection %ld seems to be dead!\n",
2979 check->connection_id);
2981 /* disconnect resources */
2982 Curl_disconnect(check, /* dead_connection */ TRUE);
2988 /* Make sure the pipe has only GET requests */
2989 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2990 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2992 if(!IsPipeliningPossible(sh, check))
2996 if(!IsPipeliningPossible(rh, check))
3002 /* can only happen within multi handles, and means that another easy
3003 handle is using this connection */
3007 if(Curl_resolver_asynch()) {
3008 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
3009 completed yet and until then we don't re-use this connection */
3010 if(!check->ip_addr_str[0]) {
3012 "Connection #%ld is still name resolving, can't reuse\n",
3013 check->connection_id);
3018 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
3019 check->bits.close) {
3020 /* Don't pick a connection that hasn't connected yet or that is going
3022 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
3023 check->connection_id);
3025 if(check->recv_pipe->size > 0) {
3027 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3028 check->connection_id);
3035 if((needle->handler->flags&PROTOPT_SSL) !=
3036 (check->handler->flags&PROTOPT_SSL))
3037 /* don't do mixed SSL and non-SSL connections */
3038 if(!(needle->handler->protocol & check->handler->protocol))
3039 /* except protocols that have been upgraded via TLS */
3042 if(needle->handler->flags&PROTOPT_SSL) {
3043 if((data->set.ssl.verifypeer != check->verifypeer) ||
3044 (data->set.ssl.verifyhost != check->verifyhost))
3048 if(needle->bits.proxy != check->bits.proxy)
3049 /* don't do mixed proxy and non-proxy connections */
3052 if(!canPipeline && check->inuse)
3053 /* this request can't be pipelined but the checked connection is
3054 already in use so we skip it */
3057 if(needle->localdev || needle->localport) {
3058 /* If we are bound to a specific local end (IP+port), we must not
3059 re-use a random other one, although if we didn't ask for a
3060 particular one we can reuse one that was bound.
3062 This comparison is a bit rough and too strict. Since the input
3063 parameters can be specified in numerous ways and still end up the
3064 same it would take a lot of processing to make it really accurate.
3065 Instead, this matching will assume that re-uses of bound connections
3066 will most likely also re-use the exact same binding parameters and
3067 missing out a few edge cases shouldn't hurt anyone very much.
3069 if((check->localport != needle->localport) ||
3070 (check->localportrange != needle->localportrange) ||
3072 !needle->localdev ||
3073 strcmp(check->localdev, needle->localdev))
3077 if((!(needle->handler->flags & PROTOPT_CREDSPERREQUEST)) ||
3079 /* This protocol requires credentials per connection or is HTTP+NTLM,
3080 so verify that we're using the same name and password as well */
3081 if(!strequal(needle->user, check->user) ||
3082 !strequal(needle->passwd, check->passwd)) {
3083 /* one of them was different */
3086 credentialsMatch = TRUE;
3089 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3090 (needle->bits.httpproxy && check->bits.httpproxy &&
3091 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3092 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3093 (needle->port == check->port))) {
3094 /* The requested connection does not use a HTTP proxy or it uses SSL or
3095 it is a non-SSL protocol tunneled over the same http proxy name and
3096 port number or it is a non-SSL protocol which is allowed to be
3099 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3100 needle->handler->protocol & check->handler->protocol) &&
3101 Curl_raw_equal(needle->host.name, check->host.name) &&
3102 needle->remote_port == check->remote_port) {
3103 if(needle->handler->flags & PROTOPT_SSL) {
3104 /* This is a SSL connection so verify that we're using the same
3105 SSL options as well */
3106 if(!Curl_ssl_config_matches(&needle->ssl_config,
3107 &check->ssl_config)) {
3109 "Connection #%ld has different SSL parameters, "
3111 check->connection_id));
3114 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3116 "Connection #%ld has not started SSL connect, "
3118 check->connection_id));
3125 else { /* The requested needle connection is using a proxy,
3126 is the checked one using the same host, port and type? */
3127 if(check->bits.proxy &&
3128 (needle->proxytype == check->proxytype) &&
3129 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3130 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3131 needle->port == check->port) {
3132 /* This is the same proxy connection, use it! */
3138 /* If we are looking for an HTTP+NTLM connection, check if this is
3139 already authenticating with the right credentials. If not, keep
3140 looking so that we can reuse NTLM connections if
3141 possible. (Especially we must not reuse the same connection if
3142 partway through a handshake!) */
3144 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3147 /* We must use this connection, no other */
3148 *force_reuse = TRUE;
3151 else if(credentialsMatch)
3152 /* this is a backup choice */
3158 /* We can pipeline if we want to. Let's continue looking for
3159 the optimal connection to use, i.e the shortest pipe that is not
3163 /* We have the optimal connection. Let's stop looking. */
3168 /* We can't use the connection if the pipe is full */
3169 if(pipeLen >= max_pipe_len)
3172 /* We can't use the connection if the pipe is penalized */
3173 if(Curl_pipeline_penalized(data, check))
3176 if(pipeLen < best_pipe_len) {
3177 /* This connection has a shorter pipe so far. We'll pick this
3178 and continue searching */
3180 best_pipe_len = pipeLen;
3185 /* We have found a connection. Let's stop searching. */
3195 return TRUE; /* yes, we found one to use! */
3198 return FALSE; /* no matching connecting exists */
3201 /* Mark the connection as 'idle', or close it if the cache is full.
3202 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3204 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3206 /* data->multi->maxconnects can be negative, deal with it. */
3207 size_t maxconnects =
3208 (data->multi->maxconnects < 0) ? data->multi->num_easy * 4:
3209 data->multi->maxconnects;
3210 struct connectdata *conn_candidate = NULL;
3212 /* Mark the current connection as 'unused' */
3213 conn->inuse = FALSE;
3215 if(maxconnects > 0 &&
3216 data->state.conn_cache->num_connections > maxconnects) {
3217 infof(data, "Connection cache is full, closing the oldest one.\n");
3219 conn_candidate = find_oldest_idle_connection(data);
3221 if(conn_candidate) {
3222 /* Set the connection's owner correctly */
3223 conn_candidate->data = data;
3225 /* the winner gets the honour of being disconnected */
3226 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3230 return (conn_candidate == conn) ? FALSE : TRUE;
3234 * The given input connection struct pointer is to be stored in the connection
3235 * cache. If the cache is already full, least interesting existing connection
3236 * (if any) gets closed.
3238 * The given connection should be unique. That must've been checked prior to
3241 static CURLcode ConnectionStore(struct SessionHandle *data,
3242 struct connectdata *conn)
3244 static int connection_id_counter = 0;
3248 /* Assign a number to the connection for easier tracking in the log
3250 conn->connection_id = connection_id_counter++;
3252 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3253 if(result != CURLE_OK)
3254 conn->connection_id = -1;
3259 /* after a TCP connection to the proxy has been verified, this function does
3260 the next magic step.
3262 Note: this function's sub-functions call failf()
3265 CURLcode Curl_connected_proxy(struct connectdata *conn,
3268 if(!conn->bits.proxy || sockindex)
3269 /* this magic only works for the primary socket as the secondary is used
3270 for FTP only and it has FTP specific magic in ftp.c */
3273 switch(conn->proxytype) {
3274 #ifndef CURL_DISABLE_PROXY
3275 case CURLPROXY_SOCKS5:
3276 case CURLPROXY_SOCKS5_HOSTNAME:
3277 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3278 conn->host.name, conn->remote_port,
3281 case CURLPROXY_SOCKS4:
3282 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3283 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3285 case CURLPROXY_SOCKS4A:
3286 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3287 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3289 #endif /* CURL_DISABLE_PROXY */
3290 case CURLPROXY_HTTP:
3291 case CURLPROXY_HTTP_1_0:
3292 /* do nothing here. handled later. */
3296 } /* switch proxytype */
3302 * verboseconnect() displays verbose information after a connect
3304 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3305 void Curl_verboseconnect(struct connectdata *conn)
3307 if(conn->data->set.verbose)
3308 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3309 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3310 conn->ip_addr_str, conn->port, conn->connection_id);
3314 int Curl_protocol_getsock(struct connectdata *conn,
3315 curl_socket_t *socks,
3318 if(conn->handler->proto_getsock)
3319 return conn->handler->proto_getsock(conn, socks, numsocks);
3320 return GETSOCK_BLANK;
3323 int Curl_doing_getsock(struct connectdata *conn,
3324 curl_socket_t *socks,
3327 if(conn && conn->handler->doing_getsock)
3328 return conn->handler->doing_getsock(conn, socks, numsocks);
3329 return GETSOCK_BLANK;
3333 * We are doing protocol-specific connecting and this is being called over and
3334 * over from the multi interface until the connection phase is done on
3338 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3341 CURLcode result=CURLE_OK;
3343 if(conn && conn->handler->connecting) {
3345 result = conn->handler->connecting(conn, done);
3354 * We are DOING this is being called over and over from the multi interface
3355 * until the DOING phase is done on protocol layer.
3358 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3360 CURLcode result=CURLE_OK;
3362 if(conn && conn->handler->doing) {
3364 result = conn->handler->doing(conn, done);
3373 * We have discovered that the TCP connection has been successful, we can now
3374 * proceed with some action.
3377 CURLcode Curl_protocol_connect(struct connectdata *conn,
3378 bool *protocol_done)
3380 CURLcode result=CURLE_OK;
3382 *protocol_done = FALSE;
3384 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3385 /* We already are connected, get back. This may happen when the connect
3386 worked fine in the first call, like when we connect to a local server
3387 or proxy. Note that we don't know if the protocol is actually done.
3389 Unless this protocol doesn't have any protocol-connect callback, as
3390 then we know we're done. */
3391 if(!conn->handler->connecting)
3392 *protocol_done = TRUE;
3397 if(!conn->bits.protoconnstart) {
3399 result = Curl_proxy_connect(conn);
3403 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3404 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3405 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3406 before proceeding further. Return CURLE_OK so we'll be called again */
3409 if(conn->handler->connect_it) {
3410 /* is there a protocol-specific connect() procedure? */
3412 /* Call the protocol-specific connect function */
3413 result = conn->handler->connect_it(conn, protocol_done);
3416 *protocol_done = TRUE;
3418 /* it has started, possibly even completed but that knowledge isn't stored
3421 conn->bits.protoconnstart = TRUE;
3424 return result; /* pass back status */
3428 * Helpers for IDNA convertions.
3430 static bool is_ASCII_name(const char *hostname)
3432 const unsigned char *ch = (const unsigned char*)hostname;
3443 * Check if characters in hostname is allowed in Top Level Domain.
3445 static bool tld_check_name(struct SessionHandle *data,
3446 const char *ace_hostname)
3449 char *uc_name = NULL;
3451 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3452 const char *tld_errmsg = "<no msg>";
3457 /* Convert (and downcase) ACE-name back into locale's character set */
3458 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3459 if(rc != IDNA_SUCCESS)
3462 rc = tld_check_lz(uc_name, &err_pos, NULL);
3463 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3464 #ifdef HAVE_TLD_STRERROR
3465 if(rc != TLD_SUCCESS)
3466 tld_errmsg = tld_strerror((Tld_rc)rc);
3468 if(rc == TLD_INVALID)
3469 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3470 tld_errmsg, err_pos, uc_name[err_pos],
3471 uc_name[err_pos] & 255);
3472 else if(rc != TLD_SUCCESS)
3473 infof(data, "WARNING: TLD check for %s failed; %s\n",
3474 uc_name, tld_errmsg);
3475 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3478 if(rc != TLD_SUCCESS)
3486 * Perform any necessary IDN conversion of hostname
3488 static void fix_hostname(struct SessionHandle *data,
3489 struct connectdata *conn, struct hostname *host)
3494 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3498 /* set the name we use to display the host name */
3499 host->dispname = host->name;
3500 if(!is_ASCII_name(host->name)) {
3502 /*************************************************************
3503 * Check name for non-ASCII and convert hostname to ACE form.
3504 *************************************************************/
3505 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3506 char *ace_hostname = NULL;
3507 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3508 infof (data, "Input domain encoded as `%s'\n",
3509 stringprep_locale_charset ());
3510 if(rc != IDNA_SUCCESS)
3511 infof(data, "Failed to convert %s to ACE; %s\n",
3512 host->name, Curl_idn_strerror(conn,rc));
3514 /* tld_check_name() displays a warning if the host name contains
3515 "illegal" characters for this TLD */
3516 (void)tld_check_name(data, ace_hostname);
3518 host->encalloc = ace_hostname;
3519 /* change the name pointer to point to the encoded hostname */
3520 host->name = host->encalloc;
3523 #elif defined(USE_WIN32_IDN)
3524 /*************************************************************
3525 * Check name for non-ASCII and convert hostname to ACE form.
3526 *************************************************************/
3527 char *ace_hostname = NULL;
3528 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3530 infof(data, "Failed to convert %s to ACE;\n",
3533 host->encalloc = ace_hostname;
3534 /* change the name pointer to point to the encoded hostname */
3535 host->name = host->encalloc;
3538 infof(data, "IDN support not present, can't parse Unicode domains\n");
3543 static void llist_dtor(void *user, void *element)
3551 * Allocate and initialize a new connectdata object.
3553 static struct connectdata *allocate_conn(struct SessionHandle *data)
3555 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3559 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3560 already from start to avoid NULL
3561 situations and checks */
3563 /* and we setup a few fields in case we end up actually using this struct */
3565 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3566 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3567 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3568 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3569 conn->connection_id = -1; /* no ID */
3570 conn->port = -1; /* unknown at this point */
3571 conn->remote_port = -1; /* unknown */
3573 /* Default protocol-independent behavior doesn't support persistent
3574 connections, so we set this to force-close. Protocols that support
3575 this need to set this to FALSE in their "curl_do" functions. */
3576 conn->bits.close = TRUE;
3578 /* Store creation time to help future close decision making */
3579 conn->created = Curl_tvnow();
3581 conn->data = data; /* Setup the association between this connection
3582 and the SessionHandle */
3584 conn->proxytype = data->set.proxytype; /* type */
3586 #ifdef CURL_DISABLE_PROXY
3588 conn->bits.proxy = FALSE;
3589 conn->bits.httpproxy = FALSE;
3590 conn->bits.proxy_user_passwd = FALSE;
3591 conn->bits.tunnel_proxy = FALSE;
3593 #else /* CURL_DISABLE_PROXY */
3595 /* note that these two proxy bits are now just on what looks to be
3596 requested, they may be altered down the road */
3597 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3598 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3599 conn->bits.httpproxy = (conn->bits.proxy &&
3600 (conn->proxytype == CURLPROXY_HTTP ||
3601 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3602 conn->bits.proxy_user_passwd =
3603 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3604 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3606 #endif /* CURL_DISABLE_PROXY */
3608 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3609 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3610 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3612 conn->verifypeer = data->set.ssl.verifypeer;
3613 conn->verifyhost = data->set.ssl.verifyhost;
3615 conn->ip_version = data->set.ipver;
3617 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3618 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3619 conn->ntlm_auth_hlpr_pid = 0;
3620 conn->challenge_header = NULL;
3621 conn->response_header = NULL;
3624 if(Curl_multi_pipeline_enabled(data->multi) &&
3625 !conn->master_buffer) {
3626 /* Allocate master_buffer to be used for pipelining */
3627 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3628 if(!conn->master_buffer)
3632 /* Initialize the pipeline lists */
3633 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3634 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3635 if(!conn->send_pipe || !conn->recv_pipe)
3639 conn->data_prot = PROT_CLEAR;
3642 /* Store the local bind parameters that will be used for this connection */
3643 if(data->set.str[STRING_DEVICE]) {
3644 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3648 conn->localportrange = data->set.localportrange;
3649 conn->localport = data->set.localport;
3651 /* the close socket stuff needs to be copied to the connection struct as
3652 it may live on without (this specific) SessionHandle */
3653 conn->fclosesocket = data->set.fclosesocket;
3654 conn->closesocket_client = data->set.closesocket_client;
3659 Curl_llist_destroy(conn->send_pipe, NULL);
3660 Curl_llist_destroy(conn->recv_pipe, NULL);
3662 conn->send_pipe = NULL;
3663 conn->recv_pipe = NULL;
3665 Curl_safefree(conn->master_buffer);
3666 Curl_safefree(conn->localdev);
3667 Curl_safefree(conn);
3671 static CURLcode findprotocol(struct SessionHandle *data,
3672 struct connectdata *conn,
3673 const char *protostr)
3675 const struct Curl_handler * const *pp;
3676 const struct Curl_handler *p;
3678 /* Scan protocol handler table and match against 'protostr' to set a few
3679 variables based on the URL. Now that the handler may be changed later
3680 when the protocol specific setup function is called. */
3681 for(pp = protocols; (p = *pp) != NULL; pp++) {
3682 if(Curl_raw_equal(p->scheme, protostr)) {
3683 /* Protocol found in table. Check if allowed */
3684 if(!(data->set.allowed_protocols & p->protocol))
3688 /* it is allowed for "normal" request, now do an extra check if this is
3689 the result of a redirect */
3690 if(data->state.this_is_a_follow &&
3691 !(data->set.redir_protocols & p->protocol))
3695 /* Perform setup complement if some. */
3696 conn->handler = conn->given = p;
3698 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3704 /* The protocol was not found in the table, but we don't have to assign it
3705 to anything since it is already assigned to a dummy-struct in the
3706 create_conn() function when the connectdata struct is allocated. */
3707 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3710 return CURLE_UNSUPPORTED_PROTOCOL;
3714 * Parse URL and fill in the relevant members of the connection struct.
3716 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3717 struct connectdata *conn,
3719 char **userp, char **passwdp,
3724 char *path = data->state.path;
3730 bool rebuild_url = FALSE;
3732 *prot_missing = FALSE;
3734 /*************************************************************
3737 * We need to parse the url even when using the proxy, because we will need
3738 * the hostname and port in case we are trying to SSL connect through the
3739 * proxy -- and we don't know if we will need to use SSL until we parse the
3741 ************************************************************/
3742 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3744 Curl_raw_equal(protobuf, "file")) {
3745 if(path[0] == '/' && path[1] == '/') {
3746 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3747 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3748 * file://localhost/<path> is similar to how other schemes treat missing
3749 * hostnames. See RFC 1808. */
3751 /* This cannot be done with strcpy() in a portable manner, since the
3752 memory areas overlap! */
3753 memmove(path, path + 2, strlen(path + 2)+1);
3756 * we deal with file://<host>/<path> differently since it supports no
3757 * hostname other than "localhost" and "127.0.0.1", which is unique among
3758 * the URL protocols specified in RFC 1738
3760 if(path[0] != '/') {
3761 /* the URL included a host name, we ignore host names in file:// URLs
3762 as the standards don't define what to do with them */
3763 char *ptr=strchr(path, '/');
3765 /* there was a slash present
3767 RFC1738 (section 3.1, page 5) says:
3769 The rest of the locator consists of data specific to the scheme,
3770 and is known as the "url-path". It supplies the details of how the
3771 specified resource can be accessed. Note that the "/" between the
3772 host (or port) and the url-path is NOT part of the url-path.
3774 As most agents use file://localhost/foo to get '/foo' although the
3775 slash preceding foo is a separator and not a slash for the path,
3776 a URL as file://localhost//foo must be valid as well, to refer to
3777 the same file with an absolute path.
3780 if(ptr[1] && ('/' == ptr[1]))
3781 /* if there was two slashes, we skip the first one as that is then
3782 used truly as a separator */
3785 /* This cannot be made with strcpy, as the memory chunks overlap! */
3786 memmove(path, ptr, strlen(ptr)+1);
3790 protop = "file"; /* protocol string */
3796 if(2 > sscanf(data->change.url,
3797 "%15[^\n:]://%[^\n/?]%[^\n]",
3799 conn->host.name, path)) {
3802 * The URL was badly formatted, let's try the browser-style _without_
3803 * protocol specified like 'http://'.
3805 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3808 * We couldn't even get this format.
3809 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3810 * assigned, but the return value is EOF!
3812 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3813 if(!(rc == -1 && *conn->host.name))
3816 failf(data, "<url> malformed");
3817 return CURLE_URL_MALFORMAT;
3822 * Since there was no protocol part specified, we guess what protocol it
3823 * is based on the first letters of the server name.
3826 /* Note: if you add a new protocol, please update the list in
3827 * lib/version.c too! */
3829 if(checkprefix("FTP.", conn->host.name))
3831 else if(checkprefix("DICT.", conn->host.name))
3833 else if(checkprefix("LDAP.", conn->host.name))
3835 else if(checkprefix("IMAP.", conn->host.name))
3837 else if(checkprefix("SMTP.", conn->host.name))
3839 else if(checkprefix("POP3.", conn->host.name))
3845 *prot_missing = TRUE; /* not given in URL */
3851 /* We search for '?' in the host name (but only on the right side of a
3852 * @-letter to allow ?-letters in username and password) to handle things
3853 * like http://example.com?param= (notice the missing '/').
3855 at = strchr(conn->host.name, '@');
3857 query = strchr(at+1, '?');
3859 query = strchr(conn->host.name, '?');
3862 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3863 a slash after the '?', that is where the path currently begins and the
3864 '?string' is still part of the host name.
3866 We must move the trailing part from the host name and put it first in
3867 the path. And have it all prefixed with a slash.
3870 size_t hostlen = strlen(query);
3871 size_t pathlen = strlen(path);
3873 /* move the existing path plus the zero byte forward, to make room for
3874 the host-name part */
3875 memmove(path+hostlen+1, path, pathlen+1);
3877 /* now copy the trailing host part in front of the existing path */
3878 memcpy(path+1, query, hostlen);
3880 path[0]='/'; /* prepend the missing slash */
3883 *query=0; /* now cut off the hostname at the ? */
3886 /* if there's no path set, use a single slash */
3891 /* If the URL is malformatted (missing a '/' after hostname before path) we
3892 * insert a slash here. The only letter except '/' we accept to start a path
3895 if(path[0] == '?') {
3896 /* We need this function to deal with overlapping memory areas. We know
3897 that the memory area 'path' points to is 'urllen' bytes big and that
3898 is bigger than the path. Use +1 to move the zero byte too. */
3899 memmove(&path[1], path, strlen(path)+1);
3904 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3905 char *newp = Curl_dedotdotify(path);
3907 return CURLE_OUT_OF_MEMORY;
3909 if(strcmp(newp, path)) {
3911 free(data->state.pathbuffer);
3912 data->state.pathbuffer = newp;
3913 data->state.path = newp;
3921 * "rebuild_url" means that one or more URL components have been modified so
3922 * we need to generate an updated full version. We need the corrected URL
3923 * when communicating over HTTP proxy and we don't know at this point if
3924 * we're using a proxy or not.
3929 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3931 size_t urllen = strlen(data->change.url); /* original URL length */
3933 size_t prefixlen = strlen(conn->host.name);
3936 prefixlen += strlen(protop) + strlen("://");
3938 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3940 return CURLE_OUT_OF_MEMORY;
3942 /* copy the prefix */
3943 memcpy(reurl, data->change.url, prefixlen);
3945 /* append the trailing piece + zerobyte */
3946 memcpy(&reurl[prefixlen], path, plen + 1);
3948 /* possible free the old one */
3949 if(data->change.url_alloc) {
3950 Curl_safefree(data->change.url);
3951 data->change.url_alloc = FALSE;
3954 infof(data, "Rebuilt URL to: %s\n", reurl);
3956 data->change.url = reurl;
3957 data->change.url_alloc = TRUE; /* free this later */
3961 * Parse the login details from the URL and strip them out of
3964 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3965 if(result != CURLE_OK)
3968 if(conn->host.name[0] == '[') {
3969 /* This looks like an IPv6 address literal. See if there is an address
3970 scope if there is no location header */
3971 char *percent = strchr(conn->host.name, '%');
3973 unsigned int identifier_offset = 3;
3975 unsigned long scope;
3976 if(strncmp("%25", percent, 3) != 0) {
3978 "Please URL encode %% as %%25, see RFC 6874.\n");
3979 identifier_offset = 1;
3981 scope = strtoul(percent + identifier_offset, &endp, 10);
3983 /* The address scope was well formed. Knock it out of the
3985 memmove(percent, endp, strlen(endp)+1);
3986 conn->scope = (unsigned int)scope;
3989 /* Zone identifier is not numeric */
3990 #ifdef HAVE_NET_IF_H
3991 char ifname[IFNAMSIZ + 2];
3992 char *square_bracket;
3993 unsigned int scopeidx = 0;
3994 strncpy(ifname, percent + identifier_offset, IFNAMSIZ + 2);
3995 /* Ensure nullbyte termination */
3996 ifname[IFNAMSIZ + 1] = '\0';
3997 square_bracket = strchr(ifname, ']');
3998 if(square_bracket) {
4000 *square_bracket = '\0';
4001 scopeidx = if_nametoindex(ifname);
4003 infof(data, "Invalid network interface: %s; %s\n", ifname,
4008 /* Remove zone identifier from hostname */
4010 percent + identifier_offset + strlen(ifname),
4011 identifier_offset + strlen(ifname));
4012 conn->scope = scopeidx;
4015 #endif /* HAVE_NET_IF_H */
4016 infof(data, "Invalid IPv6 address format\n");
4017 #ifdef HAVE_NET_IF_H
4019 #endif /* HAVE_NET_IF_H */
4025 /* Override any scope that was set above. */
4026 conn->scope = data->set.scope;
4028 /* Remove the fragment part of the path. Per RFC 2396, this is always the
4029 last part of the URI. We are looking for the first '#' so that we deal
4030 gracefully with non conformant URI such as http://example.com#foo#bar. */
4031 fragment = strchr(path, '#');
4035 /* we know the path part ended with a fragment, so we know the full URL
4036 string does too and we need to cut it off from there so it isn't used
4038 fragment = strchr(data->change.url, '#');
4044 * So if the URL was A://B/C#D,
4046 * conn->host.name is B
4047 * data->state.path is /C
4050 return findprotocol(data, conn, protop);
4054 * If we're doing a resumed transfer, we need to setup our stuff
4057 static CURLcode setup_range(struct SessionHandle *data)
4059 struct UrlState *s = &data->state;
4060 s->resume_from = data->set.set_resume_from;
4061 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4062 if(s->rangestringalloc)
4066 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4068 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4070 s->rangestringalloc = (s->range)?TRUE:FALSE;
4073 return CURLE_OUT_OF_MEMORY;
4075 /* tell ourselves to fetch this range */
4076 s->use_range = TRUE; /* enable range download */
4079 s->use_range = FALSE; /* disable range download */
4086 * setup_connection_internals() -
4088 * Setup connection internals specific to the requested protocol in the
4089 * SessionHandle. This is inited and setup before the connection is made but
4090 * is about the particular protocol that is to be used.
4092 * This MUST get called after proxy magic has been figured out.
4094 static CURLcode setup_connection_internals(struct connectdata *conn)
4096 const struct Curl_handler * p;
4099 /* in some case in the multi state-machine, we go back to the CONNECT state
4100 and then a second (or third or...) call to this function will be made
4101 without doing a DISCONNECT or DONE in between (since the connection is
4102 yet in place) and therefore this function needs to first make sure
4103 there's no lingering previous data allocated. */
4104 Curl_free_request_state(conn->data);
4106 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4107 conn->data->req.maxdownload = -1;
4109 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4111 /* Perform setup complement if some. */
4114 if(p->setup_connection) {
4115 result = (*p->setup_connection)(conn);
4117 if(result != CURLE_OK)
4120 p = conn->handler; /* May have changed. */
4124 /* we check for -1 here since if proxy was detected already, this
4125 was very likely already set to the proxy port */
4126 conn->port = p->defport;
4128 /* only if remote_port was not already parsed off the URL we use the
4129 default port number */
4130 if(conn->remote_port < 0)
4131 conn->remote_port = (unsigned short)conn->given->defport;
4137 * Curl_free_request_state() should free temp data that was allocated in the
4138 * SessionHandle for this single request.
4141 void Curl_free_request_state(struct SessionHandle *data)
4143 Curl_safefree(data->req.protop);
4147 #ifndef CURL_DISABLE_PROXY
4148 /****************************************************************
4149 * Checks if the host is in the noproxy list. returns true if it matches
4150 * and therefore the proxy should NOT be used.
4151 ****************************************************************/
4152 static bool check_noproxy(const char* name, const char* no_proxy)
4154 /* no_proxy=domain1.dom,host.domain2.dom
4155 * (a comma-separated list of hosts which should
4156 * not be proxied, or an asterisk to override
4157 * all proxy variables)
4161 const char* separator = ", ";
4162 size_t no_proxy_len;
4166 if(no_proxy && no_proxy[0]) {
4167 if(Curl_raw_equal("*", no_proxy)) {
4171 /* NO_PROXY was specified and it wasn't just an asterisk */
4173 no_proxy_len = strlen(no_proxy);
4174 endptr = strchr(name, ':');
4176 namelen = endptr - name;
4178 namelen = strlen(name);
4180 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4181 while(tok_start < no_proxy_len &&
4182 strchr(separator, no_proxy[tok_start]) != NULL) {
4183 /* Look for the beginning of the token. */
4187 if(tok_start == no_proxy_len)
4188 break; /* It was all trailing separator chars, no more tokens. */
4190 for(tok_end = tok_start; tok_end < no_proxy_len &&
4191 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4192 /* Look for the end of the token. */
4195 /* To match previous behaviour, where it was necessary to specify
4196 * ".local.com" to prevent matching "notlocal.com", we will leave
4199 if(no_proxy[tok_start] == '.')
4202 if((tok_end - tok_start) <= namelen) {
4203 /* Match the last part of the name to the domain we are checking. */
4204 const char *checkn = name + namelen - (tok_end - tok_start);
4205 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4206 tok_end - tok_start)) {
4207 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4208 /* We either have an exact match, or the previous character is a .
4209 * so it is within the same domain, so no proxy for this host.
4214 } /* if((tok_end - tok_start) <= namelen) */
4215 } /* for(tok_start = 0; tok_start < no_proxy_len;
4216 tok_start = tok_end + 1) */
4217 } /* NO_PROXY was specified and it wasn't just an asterisk */
4222 /****************************************************************
4223 * Detect what (if any) proxy to use. Remember that this selects a host
4224 * name and is not limited to HTTP proxies only.
4225 * The returned pointer must be freed by the caller (unless NULL)
4226 ****************************************************************/
4227 static char *detect_proxy(struct connectdata *conn)
4231 #ifndef CURL_DISABLE_HTTP
4232 /* If proxy was not specified, we check for default proxy environment
4233 * variables, to enable i.e Lynx compliance:
4235 * http_proxy=http://some.server.dom:port/
4236 * https_proxy=http://some.server.dom:port/
4237 * ftp_proxy=http://some.server.dom:port/
4238 * no_proxy=domain1.dom,host.domain2.dom
4239 * (a comma-separated list of hosts which should
4240 * not be proxied, or an asterisk to override
4241 * all proxy variables)
4242 * all_proxy=http://some.server.dom:port/
4243 * (seems to exist for the CERN www lib. Probably
4244 * the first to check for.)
4246 * For compatibility, the all-uppercase versions of these variables are
4247 * checked if the lowercase versions don't exist.
4249 char *no_proxy=NULL;
4250 char proxy_env[128];
4252 no_proxy=curl_getenv("no_proxy");
4254 no_proxy=curl_getenv("NO_PROXY");
4256 if(!check_noproxy(conn->host.name, no_proxy)) {
4257 /* It was not listed as without proxy */
4258 const char *protop = conn->handler->scheme;
4259 char *envp = proxy_env;
4262 /* Now, build <protocol>_proxy and check for such a one to use */
4264 *envp++ = (char)tolower((int)*protop++);
4267 strcpy(envp, "_proxy");
4269 /* read the protocol proxy: */
4270 prox=curl_getenv(proxy_env);
4273 * We don't try the uppercase version of HTTP_PROXY because of
4276 * When curl is used in a webserver application
4277 * environment (cgi or php), this environment variable can
4278 * be controlled by the web server user by setting the
4279 * http header 'Proxy:' to some value.
4281 * This can cause 'internal' http/ftp requests to be
4282 * arbitrarily redirected by any external attacker.
4284 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4285 /* There was no lowercase variable, try the uppercase version: */
4286 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4287 prox=curl_getenv(proxy_env);
4290 if(prox && *prox) { /* don't count "" strings */
4291 proxy = prox; /* use this */
4294 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4296 proxy=curl_getenv("ALL_PROXY");
4298 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4303 #else /* !CURL_DISABLE_HTTP */
4306 #endif /* CURL_DISABLE_HTTP */
4312 * If this is supposed to use a proxy, we need to figure out the proxy
4313 * host name, so that we can re-use an existing connection
4314 * that may exist registered to the same proxy host.
4315 * proxy will be freed before this function returns.
4317 static CURLcode parse_proxy(struct SessionHandle *data,
4318 struct connectdata *conn, char *proxy)
4323 /* We use 'proxyptr' to point to the proxy name from now on... */
4328 /* We do the proxy host string parsing here. We want the host name and the
4329 * port name. Accept a protocol:// prefix
4332 /* Parse the protocol part if present */
4333 endofprot = strstr(proxy, "://");
4335 proxyptr = endofprot+3;
4336 if(checkprefix("socks5h", proxy))
4337 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4338 else if(checkprefix("socks5", proxy))
4339 conn->proxytype = CURLPROXY_SOCKS5;
4340 else if(checkprefix("socks4a", proxy))
4341 conn->proxytype = CURLPROXY_SOCKS4A;
4342 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4343 conn->proxytype = CURLPROXY_SOCKS4;
4344 /* Any other xxx:// : change to http proxy */
4347 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4349 /* Is there a username and password given in this proxy url? */
4350 atsign = strchr(proxyptr, '@');
4352 CURLcode res = CURLE_OK;
4353 char *proxyuser = NULL;
4354 char *proxypasswd = NULL;
4356 res = parse_login_details(proxyptr, atsign - proxyptr,
4357 &proxyuser, &proxypasswd, NULL);
4359 /* found user and password, rip them out. note that we are
4360 unescaping them, as there is otherwise no way to have a
4361 username or password with reserved characters like ':' in
4363 Curl_safefree(conn->proxyuser);
4364 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4365 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4367 conn->proxyuser = strdup("");
4369 if(!conn->proxyuser)
4370 res = CURLE_OUT_OF_MEMORY;
4372 Curl_safefree(conn->proxypasswd);
4373 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4374 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4376 conn->proxypasswd = strdup("");
4378 if(!conn->proxypasswd)
4379 res = CURLE_OUT_OF_MEMORY;
4383 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4384 atsign++; /* the right side of the @-letter */
4387 proxyptr = atsign; /* now use this instead */
4389 res = CURLE_OUT_OF_MEMORY;
4393 Curl_safefree(proxyuser);
4394 Curl_safefree(proxypasswd);
4400 /* start scanning for port number at this point */
4403 /* detect and extract RFC6874-style IPv6-addresses */
4404 if(*proxyptr == '[') {
4405 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4406 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
4409 /* There might be a zone identifier */
4410 if(strncmp("%25", ptr, 3))
4411 infof(data, "Please URL encode %% as %%25, see RFC 6874.\n");
4413 /* Allow unresered characters as defined in RFC 3986 */
4414 while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') ||
4415 (*ptr == '.') || (*ptr == '_') || (*ptr == '~')))
4419 /* yeps, it ended nicely with a bracket as well */
4422 infof(data, "Invalid IPv6 address format\n");
4424 /* Note that if this didn't end with a bracket, we still advanced the
4425 * proxyptr first, but I can't see anything wrong with that as no host
4426 * name nor a numeric can legally start with a bracket.
4430 /* Get port number off proxy.server.com:1080 */
4431 prox_portno = strchr(portptr, ':');
4433 *prox_portno = 0x0; /* cut off number from host name */
4435 /* now set the local port number */
4436 conn->port = strtol(prox_portno, NULL, 10);
4439 if(proxyptr[0]=='/')
4440 /* If the first character in the proxy string is a slash, fail
4441 immediately. The following code will otherwise clear the string which
4442 will lead to code running as if no proxy was set! */
4443 return CURLE_COULDNT_RESOLVE_PROXY;
4445 /* without a port number after the host name, some people seem to use
4446 a slash so we strip everything from the first slash */
4447 atsign = strchr(proxyptr, '/');
4449 *atsign = 0x0; /* cut off path part from host name */
4451 if(data->set.proxyport)
4452 /* None given in the proxy string, then get the default one if it is
4454 conn->port = data->set.proxyport;
4457 /* now, clone the cleaned proxy host name */
4458 conn->proxy.rawalloc = strdup(proxyptr);
4459 conn->proxy.name = conn->proxy.rawalloc;
4461 if(!conn->proxy.rawalloc)
4462 return CURLE_OUT_OF_MEMORY;
4468 * Extract the user and password from the authentication string
4470 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4471 struct connectdata *conn)
4473 char proxyuser[MAX_CURL_USER_LENGTH]="";
4474 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4476 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4477 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4478 MAX_CURL_USER_LENGTH);
4479 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4481 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4482 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4483 MAX_CURL_PASSWORD_LENGTH);
4484 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4487 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4488 if(!conn->proxyuser)
4489 return CURLE_OUT_OF_MEMORY;
4491 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4492 if(!conn->proxypasswd)
4493 return CURLE_OUT_OF_MEMORY;
4497 #endif /* CURL_DISABLE_PROXY */
4502 * Parse the login details (user name, password and options) from the URL and
4503 * strip them out of the host name
4505 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4508 * Outputs: (almost :- all currently undefined)
4509 * conn->bits.user_passwd - non-zero if non-default passwords exist
4510 * user - non-zero length if defined
4511 * passwd - non-zero length if defined
4512 * options - non-zero length if defined
4513 * conn->host.name - remove user name and password
4515 static CURLcode parse_url_login(struct SessionHandle *data,
4516 struct connectdata *conn,
4517 char **user, char **passwd, char **options)
4519 CURLcode result = CURLE_OK;
4521 char *passwdp = NULL;
4522 char *optionsp = NULL;
4524 /* At this point, we're hoping all the other special cases have
4525 * been taken care of, so conn->host.name is at most
4526 * [user[:password][;options]]@]hostname
4528 * We need somewhere to put the embedded details, so do that first.
4531 char *ptr = strchr(conn->host.name, '@');
4532 char *login = conn->host.name;
4534 DEBUGASSERT(!**user);
4535 DEBUGASSERT(!**passwd);
4536 DEBUGASSERT(!**options);
4541 /* We will now try to extract the
4542 * possible login information in a string like:
4543 * ftp://user:password@ftp.my.site:8021/README */
4544 conn->host.name = ++ptr;
4546 /* So the hostname is sane. Only bother interpreting the
4547 * results if we could care. It could still be wasted
4548 * work because it might be overtaken by the programmatically
4549 * set user/passwd, but doing that first adds more cases here :-(
4552 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4555 /* We could use the login information in the URL so extract it */
4556 result = parse_login_details(login, ptr - login - 1,
4557 &userp, &passwdp, &optionsp);
4558 if(result != CURLE_OK)
4564 /* We have a user in the URL */
4565 conn->bits.userpwd_in_url = TRUE;
4566 conn->bits.user_passwd = TRUE; /* enable user+password */
4568 /* Decode the user */
4569 newname = curl_easy_unescape(data, userp, 0, NULL);
4571 result = CURLE_OUT_OF_MEMORY;
4580 /* We have a password in the URL so decode it */
4581 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4583 result = CURLE_OUT_OF_MEMORY;
4588 *passwd = newpasswd;
4592 /* We have an options list in the URL so decode it */
4593 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4595 result = CURLE_OUT_OF_MEMORY;
4600 *options = newoptions;
4606 Curl_safefree(userp);
4607 Curl_safefree(passwdp);
4608 Curl_safefree(optionsp);
4614 * parse_login_details()
4616 * This is used to parse a login string for user name, password and options in
4617 * the following formats:
4621 * user:password;options
4623 * user;options:password
4631 * login [in] - The login string.
4632 * len [in] - The length of the login string.
4633 * userp [in/out] - The address where a pointer to newly allocated memory
4634 * holding the user will be stored upon completion.
4635 * passdwp [in/out] - The address where a pointer to newly allocated memory
4636 * holding the password will be stored upon completion.
4637 * optionsp [in/out] - The address where a pointer to newly allocated memory
4638 * holding the options will be stored upon completion.
4640 * Returns CURLE_OK on success.
4642 static CURLcode parse_login_details(const char *login, const size_t len,
4643 char **userp, char **passwdp,
4646 CURLcode result = CURLE_OK;
4650 const char *psep = NULL;
4651 const char *osep = NULL;
4656 /* Attempt to find the password separator */
4658 psep = strchr(login, ':');
4660 /* Within the constraint of the login string */
4661 if(psep >= login + len)
4665 /* Attempt to find the options separator */
4667 osep = strchr(login, ';');
4669 /* Within the constraint of the login string */
4670 if(osep >= login + len)
4674 /* Calculate the portion lengths */
4676 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4677 (osep ? (size_t)(osep - login) : len));
4679 (osep && osep > psep ? (size_t)(osep - psep) :
4680 (size_t)(login + len - psep)) - 1 : 0);
4682 (psep && psep > osep ? (size_t)(psep - osep) :
4683 (size_t)(login + len - osep)) - 1 : 0);
4685 /* Allocate the user portion buffer */
4687 ubuf = malloc(ulen + 1);
4689 result = CURLE_OUT_OF_MEMORY;
4692 /* Allocate the password portion buffer */
4693 if(!result && passwdp && plen) {
4694 pbuf = malloc(plen + 1);
4696 Curl_safefree(ubuf);
4697 result = CURLE_OUT_OF_MEMORY;
4701 /* Allocate the options portion buffer */
4702 if(!result && optionsp && olen) {
4703 obuf = malloc(olen + 1);
4705 Curl_safefree(pbuf);
4706 Curl_safefree(ubuf);
4707 result = CURLE_OUT_OF_MEMORY;
4712 /* Store the user portion if necessary */
4714 memcpy(ubuf, login, ulen);
4716 Curl_safefree(*userp);
4720 /* Store the password portion if necessary */
4722 memcpy(pbuf, psep + 1, plen);
4724 Curl_safefree(*passwdp);
4728 /* Store the options portion if necessary */
4730 memcpy(obuf, osep + 1, olen);
4732 Curl_safefree(*optionsp);
4740 /*************************************************************
4741 * Figure out the remote port number and fix it in the URL
4743 * No matter if we use a proxy or not, we have to figure out the remote
4744 * port number of various reasons.
4746 * To be able to detect port number flawlessly, we must not confuse them
4747 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4749 * The conn->host.name is currently [user:passwd@]host[:port] where host
4750 * could be a hostname, IPv4 address or IPv6 address.
4752 * The port number embedded in the URL is replaced, if necessary.
4753 *************************************************************/
4754 static CURLcode parse_remote_port(struct SessionHandle *data,
4755 struct connectdata *conn)
4760 /* Note that at this point, the IPv6 address cannot contain any scope
4761 suffix as that has already been removed in the parseurlandfillconn()
4763 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4765 (']' == endbracket)) {
4766 /* this is a RFC2732-style specified IP-address */
4767 conn->bits.ipv6_ip = TRUE;
4769 conn->host.name++; /* skip over the starting bracket */
4770 portptr = strchr(conn->host.name, ']');
4772 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4774 portptr = NULL; /* no port number available */
4779 struct in6_addr in6;
4780 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4781 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4783 failf(data, "IPv6 numerical address used in URL without brackets");
4784 return CURLE_URL_MALFORMAT;
4788 portptr = strrchr(conn->host.name, ':');
4791 if(data->set.use_port && data->state.allow_port) {
4792 /* if set, we use this and ignore the port possibly given in the URL */
4793 conn->remote_port = (unsigned short)data->set.use_port;
4795 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4796 number - since the port number is to be ignored! */
4797 if(conn->bits.httpproxy) {
4798 /* we need to create new URL with the new port number */
4802 if(conn->bits.type_set)
4803 snprintf(type, sizeof(type), ";type=%c",
4804 data->set.prefer_ascii?'A':
4805 (data->set.ftp_list_only?'D':'I'));
4808 * This synthesized URL isn't always right--suffixes like ;type=A are
4809 * stripped off. It would be better to work directly from the original
4810 * URL and simply replace the port part of it.
4812 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4813 conn->bits.ipv6_ip?"[":"", conn->host.name,
4814 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4815 data->state.slash_removed?"/":"", data->state.path,
4818 return CURLE_OUT_OF_MEMORY;
4820 if(data->change.url_alloc) {
4821 Curl_safefree(data->change.url);
4822 data->change.url_alloc = FALSE;
4825 data->change.url = url;
4826 data->change.url_alloc = TRUE;
4830 /* no CURLOPT_PORT given, extract the one from the URL */
4835 port=strtol(portptr+1, &rest, 10); /* Port number must be decimal */
4837 if((port < 0) || (port > 0xffff)) {
4838 /* Single unix standard says port numbers are 16 bits long */
4839 failf(data, "Port number out of range");
4840 return CURLE_URL_MALFORMAT;
4843 else if(rest != &portptr[1]) {
4844 *portptr = '\0'; /* cut off the name there */
4845 conn->remote_port = curlx_ultous(port);
4848 /* Browser behavior adaptation. If there's a colon with no digits after,
4849 just cut off the name there which makes us ignore the colon and just
4850 use the default port. Firefox and Chrome both do that. */
4857 * Override the login details from the URL with that in the CURLOPT_USERPWD
4858 * option or a .netrc file, if applicable.
4860 static CURLcode override_login(struct SessionHandle *data,
4861 struct connectdata *conn,
4862 char **userp, char **passwdp, char **optionsp)
4864 if(data->set.str[STRING_USERNAME]) {
4866 *userp = strdup(data->set.str[STRING_USERNAME]);
4868 return CURLE_OUT_OF_MEMORY;
4871 if(data->set.str[STRING_PASSWORD]) {
4873 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4875 return CURLE_OUT_OF_MEMORY;
4878 if(data->set.str[STRING_OPTIONS]) {
4880 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4882 return CURLE_OUT_OF_MEMORY;
4885 conn->bits.netrc = FALSE;
4886 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4887 int ret = Curl_parsenetrc(conn->host.name,
4889 data->set.str[STRING_NETRC_FILE]);
4891 infof(data, "Couldn't find host %s in the "
4892 DOT_CHAR "netrc file; using defaults\n",
4896 return CURLE_OUT_OF_MEMORY;
4899 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4900 file, so that it is safe to use even if we followed a Location: to a
4901 different host or similar. */
4902 conn->bits.netrc = TRUE;
4904 conn->bits.user_passwd = TRUE; /* enable user+password */
4912 * Set the login details so they're available in the connection
4914 static CURLcode set_login(struct connectdata *conn,
4915 const char *user, const char *passwd,
4916 const char *options)
4918 CURLcode result = CURLE_OK;
4920 /* If our protocol needs a password and we have none, use the defaults */
4921 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4922 /* Store the default user */
4923 conn->user = strdup(CURL_DEFAULT_USER);
4925 /* Store the default password */
4927 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4929 conn->passwd = NULL;
4931 /* This is the default password, so DON'T set conn->bits.user_passwd */
4934 /* Store the user, zero-length if not set */
4935 conn->user = strdup(user);
4937 /* Store the password (only if user is present), zero-length if not set */
4939 conn->passwd = strdup(passwd);
4941 conn->passwd = NULL;
4944 if(!conn->user || !conn->passwd)
4945 result = CURLE_OUT_OF_MEMORY;
4947 /* Store the options, null if not set */
4948 if(!result && options[0]) {
4949 conn->options = strdup(options);
4952 result = CURLE_OUT_OF_MEMORY;
4958 /*************************************************************
4959 * Resolve the address of the server or proxy
4960 *************************************************************/
4961 static CURLcode resolve_server(struct SessionHandle *data,
4962 struct connectdata *conn,
4965 CURLcode result=CURLE_OK;
4966 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4968 /*************************************************************
4969 * Resolve the name of the server or proxy
4970 *************************************************************/
4971 if(conn->bits.reuse)
4972 /* We're reusing the connection - no need to resolve anything, and
4973 fix_hostname() was called already in create_conn() for the re-use
4978 /* this is a fresh connect */
4980 struct Curl_dns_entry *hostaddr;
4982 /* set a pointer to the hostname we display */
4983 fix_hostname(data, conn, &conn->host);
4985 if(!conn->proxy.name || !*conn->proxy.name) {
4986 /* If not connecting via a proxy, extract the port from the URL, if it is
4987 * there, thus overriding any defaults that might have been set above. */
4988 conn->port = conn->remote_port; /* it is the same port */
4990 /* Resolve target host right on */
4991 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4992 &hostaddr, timeout_ms);
4993 if(rc == CURLRESOLV_PENDING)
4996 else if(rc == CURLRESOLV_TIMEDOUT)
4997 result = CURLE_OPERATION_TIMEDOUT;
4999 else if(!hostaddr) {
5000 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
5001 result = CURLE_COULDNT_RESOLVE_HOST;
5002 /* don't return yet, we need to clean up the timeout first */
5006 /* This is a proxy that hasn't been resolved yet. */
5008 /* IDN-fix the proxy name */
5009 fix_hostname(data, conn, &conn->proxy);
5012 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
5013 &hostaddr, timeout_ms);
5015 if(rc == CURLRESOLV_PENDING)
5018 else if(rc == CURLRESOLV_TIMEDOUT)
5019 result = CURLE_OPERATION_TIMEDOUT;
5021 else if(!hostaddr) {
5022 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
5023 result = CURLE_COULDNT_RESOLVE_PROXY;
5024 /* don't return yet, we need to clean up the timeout first */
5027 DEBUGASSERT(conn->dns_entry == NULL);
5028 conn->dns_entry = hostaddr;
5035 * Cleanup the connection just allocated before we can move along and use the
5036 * previously existing one. All relevant data is copied over and old_conn is
5037 * ready for freeing once this function returns.
5039 static void reuse_conn(struct connectdata *old_conn,
5040 struct connectdata *conn)
5042 if(old_conn->proxy.rawalloc)
5043 free(old_conn->proxy.rawalloc);
5045 /* free the SSL config struct from this connection struct as this was
5046 allocated in vain and is targeted for destruction */
5047 Curl_free_ssl_config(&old_conn->ssl_config);
5049 conn->data = old_conn->data;
5051 /* get the user+password information from the old_conn struct since it may
5052 * be new for this request even when we re-use an existing connection */
5053 conn->bits.user_passwd = old_conn->bits.user_passwd;
5054 if(conn->bits.user_passwd) {
5055 /* use the new user name and password though */
5056 Curl_safefree(conn->user);
5057 Curl_safefree(conn->passwd);
5058 conn->user = old_conn->user;
5059 conn->passwd = old_conn->passwd;
5060 old_conn->user = NULL;
5061 old_conn->passwd = NULL;
5064 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
5065 if(conn->bits.proxy_user_passwd) {
5066 /* use the new proxy user name and proxy password though */
5067 Curl_safefree(conn->proxyuser);
5068 Curl_safefree(conn->proxypasswd);
5069 conn->proxyuser = old_conn->proxyuser;
5070 conn->proxypasswd = old_conn->proxypasswd;
5071 old_conn->proxyuser = NULL;
5072 old_conn->proxypasswd = NULL;
5075 /* host can change, when doing keepalive with a proxy or if the case is
5076 different this time etc */
5077 Curl_safefree(conn->host.rawalloc);
5078 conn->host=old_conn->host;
5080 /* persist connection info in session handle */
5081 Curl_persistconninfo(conn);
5084 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5086 Curl_safefree(old_conn->user);
5087 Curl_safefree(old_conn->passwd);
5088 Curl_safefree(old_conn->proxyuser);
5089 Curl_safefree(old_conn->proxypasswd);
5090 Curl_safefree(old_conn->localdev);
5092 Curl_llist_destroy(old_conn->send_pipe, NULL);
5093 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5095 old_conn->send_pipe = NULL;
5096 old_conn->recv_pipe = NULL;
5098 Curl_safefree(old_conn->master_buffer);
5102 * create_conn() sets up a new connectdata struct, or re-uses an already
5103 * existing one, and resolves host name.
5105 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5106 * response will be coming asynchronously. If *async is FALSE, the name is
5109 * @param data The sessionhandle pointer
5110 * @param in_connect is set to the next connection data pointer
5111 * @param async is set TRUE when an async DNS resolution is pending
5112 * @see Curl_setup_conn()
5114 * *NOTE* this function assigns the conn->data pointer!
5117 static CURLcode create_conn(struct SessionHandle *data,
5118 struct connectdata **in_connect,
5121 CURLcode result = CURLE_OK;
5122 struct connectdata *conn;
5123 struct connectdata *conn_temp = NULL;
5126 char *passwd = NULL;
5127 char *options = NULL;
5130 bool prot_missing = FALSE;
5131 bool no_connections_available = FALSE;
5133 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5134 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5138 /*************************************************************
5140 *************************************************************/
5142 if(!data->change.url) {
5143 result = CURLE_URL_MALFORMAT;
5147 /* First, split up the current URL in parts so that we can use the
5148 parts for checking against the already present connections. In order
5149 to not have to modify everything at once, we allocate a temporary
5150 connection data struct and fill in for comparison purposes. */
5151 conn = allocate_conn(data);
5154 result = CURLE_OUT_OF_MEMORY;
5158 /* We must set the return variable as soon as possible, so that our
5159 parent can cleanup any possible allocs we may have done before
5163 /* This initing continues below, see the comment "Continue connectdata
5164 * initialization here" */
5166 /***********************************************************
5167 * We need to allocate memory to store the path in. We get the size of the
5168 * full URL to be sure, and we need to make it at least 256 bytes since
5169 * other parts of the code will rely on this fact
5170 ***********************************************************/
5171 #define LEAST_PATH_ALLOC 256
5172 urllen=strlen(data->change.url);
5173 if(urllen < LEAST_PATH_ALLOC)
5174 urllen=LEAST_PATH_ALLOC;
5177 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5178 * 1 - an extra terminating zero
5179 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5182 Curl_safefree(data->state.pathbuffer);
5183 data->state.path = NULL;
5185 data->state.pathbuffer = malloc(urllen+2);
5186 if(NULL == data->state.pathbuffer) {
5187 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5190 data->state.path = data->state.pathbuffer;
5192 conn->host.rawalloc = malloc(urllen+2);
5193 if(NULL == conn->host.rawalloc) {
5194 Curl_safefree(data->state.pathbuffer);
5195 data->state.path = NULL;
5196 result = CURLE_OUT_OF_MEMORY;
5200 conn->host.name = conn->host.rawalloc;
5201 conn->host.name[0] = 0;
5204 passwd = strdup("");
5205 options = strdup("");
5206 if(!user || !passwd || !options) {
5207 result = CURLE_OUT_OF_MEMORY;
5211 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5213 if(result != CURLE_OK)
5216 /*************************************************************
5217 * No protocol part in URL was used, add it!
5218 *************************************************************/
5220 /* We're guessing prefixes here and if we're told to use a proxy or if
5221 we're gonna follow a Location: later or... then we need the protocol
5222 part added so that we have a valid URL. */
5225 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5228 result = CURLE_OUT_OF_MEMORY;
5232 if(data->change.url_alloc) {
5233 Curl_safefree(data->change.url);
5234 data->change.url_alloc = FALSE;
5237 data->change.url = reurl;
5238 data->change.url_alloc = TRUE; /* free this later */
5241 /*************************************************************
5242 * If the protocol can't handle url query strings, then cut
5243 * of the unhandable part
5244 *************************************************************/
5245 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5246 char *path_q_sep = strchr(conn->data->state.path, '?');
5248 /* according to rfc3986, allow the query (?foo=bar)
5249 also on protocols that can't handle it.
5251 cut the string-part after '?'
5254 /* terminate the string */
5259 if(data->set.str[STRING_BEARER]) {
5260 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5261 if(!conn->xoauth2_bearer) {
5262 result = CURLE_OUT_OF_MEMORY;
5267 #ifndef CURL_DISABLE_PROXY
5268 /*************************************************************
5269 * Extract the user and password from the authentication string
5270 *************************************************************/
5271 if(conn->bits.proxy_user_passwd) {
5272 result = parse_proxy_auth(data, conn);
5273 if(result != CURLE_OK)
5277 /*************************************************************
5278 * Detect what (if any) proxy to use
5279 *************************************************************/
5280 if(data->set.str[STRING_PROXY]) {
5281 proxy = strdup(data->set.str[STRING_PROXY]);
5282 /* if global proxy is set, this is it */
5284 failf(data, "memory shortage");
5285 result = CURLE_OUT_OF_MEMORY;
5290 if(data->set.str[STRING_NOPROXY] &&
5291 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5293 free(proxy); /* proxy is in exception list */
5298 proxy = detect_proxy(conn);
5300 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5301 free(proxy); /* Don't bother with an empty proxy string or if the
5302 protocol doesn't work with network */
5306 /***********************************************************************
5307 * If this is supposed to use a proxy, we need to figure out the proxy host
5308 * name, proxy type and port number, so that we can re-use an existing
5309 * connection that may exist registered to the same proxy host.
5310 ***********************************************************************/
5312 result = parse_proxy(data, conn, proxy);
5314 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5319 if((conn->proxytype == CURLPROXY_HTTP) ||
5320 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5321 #ifdef CURL_DISABLE_HTTP
5322 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5323 result = CURLE_UNSUPPORTED_PROTOCOL;
5326 /* force this connection's protocol to become HTTP if not already
5327 compatible - if it isn't tunneling through */
5328 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5329 !conn->bits.tunnel_proxy)
5330 conn->handler = &Curl_handler_http;
5332 conn->bits.httpproxy = TRUE;
5336 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5337 conn->bits.proxy = TRUE;
5340 /* we aren't using the proxy after all... */
5341 conn->bits.proxy = FALSE;
5342 conn->bits.httpproxy = FALSE;
5343 conn->bits.proxy_user_passwd = FALSE;
5344 conn->bits.tunnel_proxy = FALSE;
5347 #endif /* CURL_DISABLE_PROXY */
5349 /*************************************************************
5350 * If the protocol is using SSL and HTTP proxy is used, we set
5351 * the tunnel_proxy bit.
5352 *************************************************************/
5353 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5354 conn->bits.tunnel_proxy = TRUE;
5356 /*************************************************************
5357 * Figure out the remote port number and fix it in the URL
5358 *************************************************************/
5359 result = parse_remote_port(data, conn);
5360 if(result != CURLE_OK)
5363 /* Check for overridden login details and set them accordingly so they
5364 they are known when protocol->setup_connection is called! */
5365 result = override_login(data, conn, &user, &passwd, &options);
5366 if(result != CURLE_OK)
5368 result = set_login(conn, user, passwd, options);
5369 if(result != CURLE_OK)
5372 /*************************************************************
5373 * Setup internals depending on protocol. Needs to be done after
5374 * we figured out what/if proxy to use.
5375 *************************************************************/
5376 result = setup_connection_internals(conn);
5377 if(result != CURLE_OK)
5380 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5381 conn->send[FIRSTSOCKET] = Curl_send_plain;
5382 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5383 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5385 /***********************************************************************
5386 * file: is a special case in that it doesn't need a network connection
5387 ***********************************************************************/
5388 #ifndef CURL_DISABLE_FILE
5389 if(conn->handler->flags & PROTOPT_NONETWORK) {
5391 /* this is supposed to be the connect function so we better at least check
5392 that the file is present here! */
5393 DEBUGASSERT(conn->handler->connect_it);
5394 result = conn->handler->connect_it(conn, &done);
5396 /* Setup a "faked" transfer that'll do nothing */
5397 if(CURLE_OK == result) {
5399 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5401 ConnectionStore(data, conn);
5404 * Setup whatever necessary for a resumed transfer
5406 result = setup_range(data);
5408 DEBUGASSERT(conn->handler->done);
5409 /* we ignore the return code for the protocol-specific DONE */
5410 (void)conn->handler->done(conn, result, FALSE);
5414 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5415 -1, NULL); /* no upload */
5418 /* since we skip do_init() */
5425 /* Get a cloned copy of the SSL config situation stored in the
5426 connection struct. But to get this going nicely, we must first make
5427 sure that the strings in the master copy are pointing to the correct
5428 strings in the session handle strings array!
5430 Keep in mind that the pointers in the master copy are pointing to strings
5431 that will be freed as part of the SessionHandle struct, but all cloned
5432 copies will be separately allocated.
5434 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5435 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5436 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5437 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5438 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5439 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5440 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5442 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5443 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5446 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5447 result = CURLE_OUT_OF_MEMORY;
5451 /*************************************************************
5452 * Check the current list of connections to see if we can
5453 * re-use an already existing one or if we have to create a
5455 *************************************************************/
5457 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5458 we only acknowledge this option if this is not a re-used connection
5459 already (which happens due to follow-location or during a HTTP
5460 authentication phase). */
5461 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5464 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5466 /* If we found a reusable connection, we may still want to
5467 open a new connection if we are pipelining. */
5468 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5469 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5471 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5472 conn_temp->connection_id, pipelen);
5474 if(conn_temp->bundle->num_connections < max_host_connections &&
5475 data->state.conn_cache->num_connections < max_total_connections) {
5476 /* We want a new connection anyway */
5479 infof(data, "We can reuse, but we want a new connection anyway\n");
5486 * We already have a connection for this, we got the former connection
5487 * in the conn_temp variable and thus we need to cleanup the one we
5488 * just allocated before we can move along and use the previously
5491 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5492 handle in a multi stack may nick it */
5493 reuse_conn(conn, conn_temp);
5494 free(conn); /* we don't need this anymore */
5498 /* set a pointer to the hostname we display */
5499 fix_hostname(data, conn, &conn->host);
5501 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5502 conn->connection_id,
5503 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5506 /* We have decided that we want a new connection. However, we may not
5507 be able to do that if we have reached the limit of how many
5508 connections we are allowed to open. */
5509 struct connectbundle *bundle;
5511 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5513 if(max_host_connections > 0 && bundle &&
5514 (bundle->num_connections >= max_host_connections)) {
5515 struct connectdata *conn_candidate;
5517 /* The bundle is full. Let's see if we can kill a connection. */
5518 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5520 if(conn_candidate) {
5521 /* Set the connection's owner correctly, then kill it */
5522 conn_candidate->data = data;
5523 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5526 no_connections_available = TRUE;
5529 if(max_total_connections > 0 &&
5530 (data->state.conn_cache->num_connections >= max_total_connections)) {
5531 struct connectdata *conn_candidate;
5533 /* The cache is full. Let's see if we can kill a connection. */
5534 conn_candidate = find_oldest_idle_connection(data);
5536 if(conn_candidate) {
5537 /* Set the connection's owner correctly, then kill it */
5538 conn_candidate->data = data;
5539 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5542 no_connections_available = TRUE;
5546 if(no_connections_available) {
5547 infof(data, "No connections available.\n");
5552 result = CURLE_NO_CONNECTION_AVAILABLE;
5557 * This is a brand new connection, so let's store it in the connection
5560 ConnectionStore(data, conn);
5564 /* Mark the connection as used */
5567 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5571 * Setup whatever necessary for a resumed transfer
5573 result = setup_range(data);
5577 /* Continue connectdata initialization here. */
5580 * Inherit the proper values from the urldata struct AFTER we have arranged
5581 * the persistent connection stuff
5583 conn->fread_func = data->set.fread_func;
5584 conn->fread_in = data->set.in;
5585 conn->seek_func = data->set.seek_func;
5586 conn->seek_client = data->set.seek_client;
5588 /*************************************************************
5589 * Resolve the address of the server or proxy
5590 *************************************************************/
5591 result = resolve_server(data, conn, async);
5595 Curl_safefree(options);
5596 Curl_safefree(passwd);
5597 Curl_safefree(user);
5598 Curl_safefree(proxy);
5602 /* Curl_setup_conn() is called after the name resolve initiated in
5603 * create_conn() is all done.
5605 * Curl_setup_conn() also handles reused connections
5607 * conn->data MUST already have been setup fine (in create_conn)
5610 CURLcode Curl_setup_conn(struct connectdata *conn,
5611 bool *protocol_done)
5613 CURLcode result = CURLE_OK;
5614 struct SessionHandle *data = conn->data;
5616 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5618 if(conn->handler->flags & PROTOPT_NONETWORK) {
5619 /* nothing to setup when not using a network */
5620 *protocol_done = TRUE;
5623 *protocol_done = FALSE; /* default to not done */
5625 /* set proxy_connect_closed to false unconditionally already here since it
5626 is used strictly to provide extra information to a parent function in the
5627 case of proxy CONNECT failures and we must make sure we don't have it
5628 lingering set from a previous invoke */
5629 conn->bits.proxy_connect_closed = FALSE;
5632 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5633 * basically anything through a http proxy we can't limit this based on
5636 if(data->set.str[STRING_USERAGENT]) {
5637 Curl_safefree(conn->allocptr.uagent);
5638 conn->allocptr.uagent =
5639 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5640 if(!conn->allocptr.uagent)
5641 return CURLE_OUT_OF_MEMORY;
5644 data->req.headerbytecount = 0;
5646 #ifdef CURL_DO_LINEEND_CONV
5647 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5648 #endif /* CURL_DO_LINEEND_CONV */
5650 /* set start time here for timeout purposes in the connect procedure, it
5651 is later set again for the progress meter purpose */
5652 conn->now = Curl_tvnow();
5654 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5655 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5656 result = Curl_connecthost(conn, conn->dns_entry);
5661 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5662 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5663 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5664 *protocol_done = TRUE;
5665 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5666 Curl_verboseconnect(conn);
5669 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5670 set this here perhaps a second time */
5674 * This check is quite a hack. We're calling _fsetmode to fix the problem
5675 * with fwrite converting newline characters (you get mangled text files,
5676 * and corrupted binary files when you download to stdout and redirect it to
5680 if((data->set.out)->_handle == NULL) {
5681 _fsetmode(stdout, "b");
5688 CURLcode Curl_connect(struct SessionHandle *data,
5689 struct connectdata **in_connect,
5691 bool *protocol_done)
5695 *asyncp = FALSE; /* assume synchronous resolves by default */
5697 /* call the stuff that needs to be called */
5698 code = create_conn(data, in_connect, asyncp);
5700 if(CURLE_OK == code) {
5702 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5704 *protocol_done = TRUE;
5706 /* DNS resolution is done: that's either because this is a reused
5707 connection, in which case DNS was unnecessary, or because DNS
5708 really did finish already (synch resolver/fast async resolve) */
5709 code = Curl_setup_conn(*in_connect, protocol_done);
5713 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5718 if(code && *in_connect) {
5719 /* We're not allowed to return failure with memory left allocated
5720 in the connectdata struct, free those here */
5721 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5722 *in_connect = NULL; /* return a NULL */
5728 CURLcode Curl_done(struct connectdata **connp,
5729 CURLcode status, /* an error if this is called after an
5730 error was detected */
5734 struct connectdata *conn;
5735 struct SessionHandle *data;
5737 DEBUGASSERT(*connp);
5743 /* Stop if Curl_done() has already been called */
5746 Curl_getoff_all_pipelines(data, conn);
5748 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5749 !data->set.reuse_forbid &&
5751 /* Stop if pipeline is not empty and we do not have to close
5755 conn->bits.done = TRUE; /* called just now! */
5757 /* Cleanup possible redirect junk */
5758 if(data->req.newurl) {
5759 free(data->req.newurl);
5760 data->req.newurl = NULL;
5762 if(data->req.location) {
5763 free(data->req.location);
5764 data->req.location = NULL;
5767 Curl_resolver_cancel(conn);
5769 if(conn->dns_entry) {
5770 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5771 conn->dns_entry = NULL;
5775 case CURLE_ABORTED_BY_CALLBACK:
5776 case CURLE_READ_ERROR:
5777 case CURLE_WRITE_ERROR:
5778 /* When we're aborted due to a callback return code it basically have to
5779 be counted as premature as there is trouble ahead if we don't. We have
5780 many callbacks and protocols work differently, we could potentially do
5781 this more fine-grained in the future. */
5787 /* this calls the protocol-specific function pointer previously set */
5788 if(conn->handler->done)
5789 result = conn->handler->done(conn, status, premature);
5793 if(Curl_pgrsDone(conn) && !result)
5794 result = CURLE_ABORTED_BY_CALLBACK;
5796 /* if the transfer was completed in a paused state there can be buffered
5797 data left to write and then kill */
5798 if(data->state.tempwrite) {
5799 free(data->state.tempwrite);
5800 data->state.tempwrite = NULL;
5803 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5804 forced us to close this no matter what we think.
5806 if conn->bits.close is TRUE, it means that the connection should be
5807 closed in spite of all our efforts to be nice, due to protocol
5808 restrictions in our or the server's end
5810 if premature is TRUE, it means this connection was said to be DONE before
5811 the entire request operation is complete and thus we can't know in what
5812 state it is for re-using, so we're forced to close it. In a perfect world
5813 we can add code that keep track of if we really must close it here or not,
5814 but currently we have no such detail knowledge.
5816 if(data->set.reuse_forbid || conn->bits.close || premature) {
5817 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5819 /* If we had an error already, make sure we return that one. But
5820 if we got a new error, return that. */
5825 /* the connection is no longer in use */
5826 if(ConnectionDone(data, conn)) {
5827 /* remember the most recently used connection */
5828 data->state.lastconnect = conn;
5830 infof(data, "Connection #%ld to host %s left intact\n",
5831 conn->connection_id,
5832 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5835 data->state.lastconnect = NULL;
5838 *connp = NULL; /* to make the caller of this function better detect that
5839 this was either closed or handed over to the connection
5840 cache here, and therefore cannot be used from this point on
5842 Curl_free_request_state(data);
5848 * do_init() inits the readwrite session. This is inited each time (in the DO
5849 * function before the protocol-specific DO functions are invoked) for a
5850 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5851 * nothing in here depends on stuff that are setup dynamically for the
5855 static CURLcode do_init(struct connectdata *conn)
5857 struct SessionHandle *data = conn->data;
5858 struct SingleRequest *k = &data->req;
5860 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5861 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5862 data->state.expect100header = FALSE;
5864 if(data->set.opt_no_body)
5865 /* in HTTP lingo, no body means using the HEAD request... */
5866 data->set.httpreq = HTTPREQ_HEAD;
5867 else if(HTTPREQ_HEAD == data->set.httpreq)
5868 /* ... but if unset there really is no perfect method that is the
5869 "opposite" of HEAD but in reality most people probably think GET
5870 then. The important thing is that we can't let it remain HEAD if the
5871 opt_no_body is set FALSE since then we'll behave wrong when getting
5873 data->set.httpreq = HTTPREQ_GET;
5875 k->start = Curl_tvnow(); /* start time */
5876 k->now = k->start; /* current time is now */
5877 k->header = TRUE; /* assume header */
5881 k->buf = data->state.buffer;
5882 k->uploadbuf = data->state.uploadbuffer;
5883 k->hbufp = data->state.headerbuff;
5884 k->ignorebody=FALSE;
5886 Curl_speedinit(data);
5888 Curl_pgrsSetUploadCounter(data, 0);
5889 Curl_pgrsSetDownloadCounter(data, 0);
5895 * do_complete is called when the DO actions are complete.
5897 * We init chunking and trailer bits to their default values here immediately
5898 * before receiving any header data for the current request in the pipeline.
5900 static void do_complete(struct connectdata *conn)
5902 conn->data->req.chunk=FALSE;
5903 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5904 conn->sockfd:conn->writesockfd)+1;
5905 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5908 CURLcode Curl_do(struct connectdata **connp, bool *done)
5910 CURLcode result=CURLE_OK;
5911 struct connectdata *conn = *connp;
5912 struct SessionHandle *data = conn->data;
5914 if(conn->handler->do_it) {
5915 /* generic protocol-specific function pointer set in curl_connect() */
5916 result = conn->handler->do_it(conn, done);
5918 /* This was formerly done in transfer.c, but we better do it here */
5919 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5921 * If the connection is using an easy handle, call reconnect
5922 * to re-establish the connection. Otherwise, let the multi logic
5923 * figure out how to re-establish the connection.
5926 result = Curl_reconnect_request(connp);
5928 if(result == CURLE_OK) {
5929 /* ... finally back to actually retry the DO phase */
5930 conn = *connp; /* re-assign conn since Curl_reconnect_request
5931 creates a new connection */
5932 result = conn->handler->do_it(conn, done);
5939 if((result == CURLE_OK) && *done)
5940 /* do_complete must be called after the protocol-specific DO function */
5947 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5948 * second stage DO state which (wrongly) was introduced to support FTP's
5949 * second connection.
5951 * TODO: A future libcurl should be able to work away this state.
5953 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5954 * DOING state there's more work to do!
5957 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5959 CURLcode result=CURLE_OK;
5963 if(conn->handler->do_more)
5964 result = conn->handler->do_more(conn, complete);
5966 if(!result && (*complete == 1))
5967 /* do_complete must be called after the protocol-specific DO function */