1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #ifdef HAVE_NETINET_IN_H
26 #include <netinet/in.h>
31 #ifdef HAVE_ARPA_INET_H
32 #include <arpa/inet.h>
37 #ifdef HAVE_SYS_IOCTL_H
38 #include <sys/ioctl.h>
41 #ifdef HAVE_SYS_PARAM_H
42 #include <sys/param.h>
51 #error "We can't compile without socket() support!"
61 #include <stringprep.h>
62 #ifdef HAVE_IDN_FREE_H
65 /* prototype from idn-free.h, not provided by libidn 0.4.5's make install! */
66 void idn_free (void *ptr);
69 /* if idn_free() was not found in this version of libidn use free() instead */
70 #define idn_free(x) (free)(x)
72 #elif defined(USE_WIN32_IDN)
73 /* prototype for curl_win32_idn_to_ascii() */
74 int curl_win32_idn_to_ascii(const char *in, char **out);
75 #endif /* USE_LIBIDN */
81 #include "vtls/vtls.h"
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **userptr, char **passwdptr,
149 static CURLcode parse_login_details(const char *login, const size_t len,
150 char **userptr, char **passwdptr,
156 static const struct Curl_handler * const protocols[] = {
158 #ifndef CURL_DISABLE_HTTP
162 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
166 #ifndef CURL_DISABLE_FTP
170 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
174 #ifndef CURL_DISABLE_TELNET
175 &Curl_handler_telnet,
178 #ifndef CURL_DISABLE_DICT
182 #ifndef CURL_DISABLE_LDAP
184 #if !defined(CURL_DISABLE_LDAPS) && \
185 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
186 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
191 #ifndef CURL_DISABLE_FILE
195 #ifndef CURL_DISABLE_TFTP
204 #ifndef CURL_DISABLE_IMAP
211 #ifndef CURL_DISABLE_POP3
218 #ifndef CURL_DISABLE_SMTP
225 #ifndef CURL_DISABLE_RTSP
229 #ifndef CURL_DISABLE_GOPHER
230 &Curl_handler_gopher,
237 &Curl_handler_rtmpte,
239 &Curl_handler_rtmpts,
242 (struct Curl_handler *) NULL
246 * Dummy handler for undefined protocol schemes.
249 static const struct Curl_handler Curl_handler_dummy = {
250 "<no protocol>", /* scheme */
251 ZERO_NULL, /* setup_connection */
252 ZERO_NULL, /* do_it */
253 ZERO_NULL, /* done */
254 ZERO_NULL, /* do_more */
255 ZERO_NULL, /* connect_it */
256 ZERO_NULL, /* connecting */
257 ZERO_NULL, /* doing */
258 ZERO_NULL, /* proto_getsock */
259 ZERO_NULL, /* doing_getsock */
260 ZERO_NULL, /* domore_getsock */
261 ZERO_NULL, /* perform_getsock */
262 ZERO_NULL, /* disconnect */
263 ZERO_NULL, /* readwrite */
266 PROTOPT_NONE /* flags */
269 void Curl_freeset(struct SessionHandle *data)
271 /* Free all dynamic strings stored in the data->set substructure. */
273 for(i=(enum dupstring)0; i < STRING_LAST; i++)
274 Curl_safefree(data->set.str[i]);
276 if(data->change.referer_alloc) {
277 Curl_safefree(data->change.referer);
278 data->change.referer_alloc = FALSE;
280 data->change.referer = NULL;
281 if(data->change.url_alloc) {
282 Curl_safefree(data->change.url);
283 data->change.url_alloc = FALSE;
285 data->change.url = NULL;
288 static CURLcode setstropt(char **charp, char *s)
290 /* Release the previous storage at `charp' and replace by a dynamic storage
291 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
293 Curl_safefree(*charp);
299 return CURLE_OUT_OF_MEMORY;
307 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp)
309 CURLcode result = CURLE_OK;
313 /* Parse the login details if specified. It not then we treat NULL as a hint
314 to clear the existing data */
316 result = parse_login_details(option, strlen(option),
317 (userp ? &user : NULL),
318 (passwdp ? &passwd : NULL),
323 /* Store the username part of option if required */
325 if(!user && option && option[0] == ':') {
326 /* Allocate an empty string instead of returning NULL as user name */
329 result = CURLE_OUT_OF_MEMORY;
332 Curl_safefree(*userp);
336 /* Store the password part of option if required */
338 Curl_safefree(*passwdp);
346 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
348 CURLcode r = CURLE_OK;
351 /* Copy src->set into dst->set first, then deal with the strings
355 /* clear all string pointers first */
356 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
358 /* duplicate all strings */
359 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
360 r = setstropt(&dst->set.str[i], src->set.str[i]);
365 /* If a failure occurred, freeing has to be performed externally. */
370 * This is the internal function curl_easy_cleanup() calls. This should
371 * cleanup and free all resources associated with this sessionhandle.
373 * NOTE: if we ever add something that attempts to write to a socket or
374 * similar here, we must ignore SIGPIPE first. It is currently only done
375 * when curl_easy_perform() is invoked.
378 CURLcode Curl_close(struct SessionHandle *data)
380 struct Curl_multi *m;
385 Curl_expire(data, 0); /* shut off timers */
390 /* This handle is still part of a multi handle, take care of this first
391 and detach this handle from there. */
392 curl_multi_remove_handle(data->multi, data);
395 /* when curl_easy_perform() is used, it creates its own multi handle to
396 use and this is the one */
397 curl_multi_cleanup(data->multi_easy);
399 /* Destroy the timeout list that is held in the easy handle. It is
400 /normally/ done by curl_multi_remove_handle() but this is "just in
402 if(data->state.timeoutlist) {
403 Curl_llist_destroy(data->state.timeoutlist, NULL);
404 data->state.timeoutlist = NULL;
407 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
408 the multi handle, since that function uses the magic
411 if(data->state.rangestringalloc)
412 free(data->state.range);
414 /* Free the pathbuffer */
415 Curl_safefree(data->state.pathbuffer);
416 data->state.path = NULL;
418 /* freed here just in case DONE wasn't called */
419 Curl_free_request_state(data);
421 /* Close down all open SSL info and sessions */
422 Curl_ssl_close_all(data);
423 Curl_safefree(data->state.first_host);
424 Curl_safefree(data->state.scratch);
425 Curl_ssl_free_certinfo(data);
427 if(data->change.referer_alloc) {
428 Curl_safefree(data->change.referer);
429 data->change.referer_alloc = FALSE;
431 data->change.referer = NULL;
433 if(data->change.url_alloc) {
434 Curl_safefree(data->change.url);
435 data->change.url_alloc = FALSE;
437 data->change.url = NULL;
439 Curl_safefree(data->state.headerbuff);
441 Curl_flush_cookies(data, 1);
443 Curl_digest_cleanup(data);
445 Curl_safefree(data->info.contenttype);
446 Curl_safefree(data->info.wouldredirect);
448 /* this destroys the channel and we cannot use it anymore after this */
449 Curl_resolver_cleanup(data->state.resolver);
451 Curl_convert_close(data);
453 /* No longer a dirty share, if it exists */
455 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
456 data->share->dirty--;
457 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
466 * Initialize the UserDefined fields within a SessionHandle.
467 * This may be safely called on a new or existing SessionHandle.
469 CURLcode Curl_init_userdefined(struct UserDefined *set)
471 CURLcode res = CURLE_OK;
473 set->out = stdout; /* default output to stdout */
474 set->in = stdin; /* default input from stdin */
475 set->err = stderr; /* default stderr to stderr */
477 /* use fwrite as default function to store output */
478 set->fwrite_func = (curl_write_callback)fwrite;
480 /* use fread as default function to read input */
481 set->fread_func = (curl_read_callback)fread;
482 set->is_fread_set = 0;
483 set->is_fwrite_set = 0;
485 set->seek_func = ZERO_NULL;
486 set->seek_client = ZERO_NULL;
488 /* conversion callbacks for non-ASCII hosts */
489 set->convfromnetwork = ZERO_NULL;
490 set->convtonetwork = ZERO_NULL;
491 set->convfromutf8 = ZERO_NULL;
493 set->filesize = -1; /* we don't know the size */
494 set->postfieldsize = -1; /* unknown size */
495 set->maxredirs = -1; /* allow any amount by default */
497 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
498 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
499 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
500 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
501 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
502 set->ftp_filemethod = FTPFILE_MULTICWD;
504 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
506 /* Set the default size of the SSL session ID cache */
507 set->ssl.max_ssl_sessions = 5;
509 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
510 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
511 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
512 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
514 /* make libcurl quiet by default: */
515 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
518 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
519 * switched off unless wanted.
521 set->ssl.verifypeer = TRUE;
522 set->ssl.verifyhost = TRUE;
524 set->ssl.authtype = CURL_TLSAUTH_NONE;
526 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
528 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
530 set->new_file_perms = 0644; /* Default permissions */
531 set->new_directory_perms = 0755; /* Default permissions */
533 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
534 define since we internally only use the lower 16 bits for the passed
535 in bitmask to not conflict with the private bits */
536 set->allowed_protocols = CURLPROTO_ALL;
537 set->redir_protocols =
538 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
540 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
542 * disallow unprotected protection negotiation NEC reference implementation
543 * seem not to follow rfc1961 section 4.3/4.4
545 set->socks5_gssapi_nec = FALSE;
546 /* set default gssapi service name */
547 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
548 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
553 /* This is our preferred CA cert bundle/path since install time */
554 #if defined(CURL_CA_BUNDLE)
555 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
556 #elif defined(CURL_CA_PATH)
557 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
560 set->wildcardmatch = FALSE;
561 set->chunk_bgn = ZERO_NULL;
562 set->chunk_end = ZERO_NULL;
564 /* tcp keepalives are disabled by default, but provide reasonable values for
565 * the interval and idle times.
567 set->tcp_keepalive = FALSE;
568 set->tcp_keepintvl = 60;
569 set->tcp_keepidle = 60;
571 set->ssl_enable_npn = TRUE;
572 set->ssl_enable_alpn = TRUE;
574 set->expect_100_timeout = 1000L; /* Wait for a second by default. */
581 * @param curl is a pointer to a sessionhandle pointer that gets set by this
586 CURLcode Curl_open(struct SessionHandle **curl)
588 CURLcode res = CURLE_OK;
589 struct SessionHandle *data;
592 /* Very simple start-up: alloc the struct, init it with zeroes and return */
593 data = calloc(1, sizeof(struct SessionHandle));
595 /* this is a very serious error */
596 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
597 return CURLE_OUT_OF_MEMORY;
600 data->magic = CURLEASY_MAGIC_NUMBER;
602 status = Curl_resolver_init(&data->state.resolver);
604 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
609 /* We do some initial setup here, all those fields that can't be just 0 */
611 data->state.headerbuff = malloc(HEADERSIZE);
612 if(!data->state.headerbuff) {
613 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
614 res = CURLE_OUT_OF_MEMORY;
617 res = Curl_init_userdefined(&data->set);
619 data->state.headersize=HEADERSIZE;
621 Curl_convert_init(data);
623 /* most recent connection is not yet defined */
624 data->state.lastconnect = NULL;
626 data->progress.flags |= PGRS_HIDE;
627 data->state.current_speed = -1; /* init to negative == impossible */
629 data->wildcard.state = CURLWC_INIT;
630 data->wildcard.filelist = NULL;
631 data->set.fnmatch = ZERO_NULL;
632 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
636 Curl_resolver_cleanup(data->state.resolver);
637 if(data->state.headerbuff)
638 free(data->state.headerbuff);
649 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
653 CURLcode result = CURLE_OK;
655 #ifndef CURL_DISABLE_HTTP
660 case CURLOPT_DNS_CACHE_TIMEOUT:
661 data->set.dns_cache_timeout = va_arg(param, long);
663 case CURLOPT_DNS_USE_GLOBAL_CACHE:
664 /* remember we want this enabled */
665 arg = va_arg(param, long);
666 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
668 case CURLOPT_SSL_CIPHER_LIST:
669 /* set a list of cipher we want to use in the SSL connection */
670 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
671 va_arg(param, char *));
674 case CURLOPT_RANDOM_FILE:
676 * This is the path name to a file that contains random data to seed
677 * the random SSL stuff with. The file is only used for reading.
679 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
680 va_arg(param, char *));
682 case CURLOPT_EGDSOCKET:
684 * The Entropy Gathering Daemon socket pathname
686 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
687 va_arg(param, char *));
689 case CURLOPT_MAXCONNECTS:
691 * Set the absolute number of maximum simultaneous alive connection that
692 * libcurl is allowed to have.
694 data->set.maxconnects = va_arg(param, long);
696 case CURLOPT_FORBID_REUSE:
698 * When this transfer is done, it must not be left to be reused by a
699 * subsequent transfer but shall be closed immediately.
701 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
703 case CURLOPT_FRESH_CONNECT:
705 * This transfer shall not use a previously cached connection but
706 * should be made with a fresh new connect!
708 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
710 case CURLOPT_VERBOSE:
712 * Verbose means infof() calls that give a lot of information about
713 * the connection and transfer procedures as well as internal choices.
715 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
719 * Set to include the header in the general data output stream.
721 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
723 case CURLOPT_NOPROGRESS:
725 * Shut off the internal supported progress meter
727 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
728 if(data->set.hide_progress)
729 data->progress.flags |= PGRS_HIDE;
731 data->progress.flags &= ~PGRS_HIDE;
735 * Do not include the body part in the output data stream.
737 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
739 case CURLOPT_FAILONERROR:
741 * Don't output the >=300 error code HTML-page, but instead only
744 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
749 * We want to sent data to the remote host. If this is HTTP, that equals
750 * using the PUT request.
752 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
753 if(data->set.upload) {
754 /* If this is HTTP, PUT is what's needed to "upload" */
755 data->set.httpreq = HTTPREQ_PUT;
756 data->set.opt_no_body = FALSE; /* this is implied */
759 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
760 then this can be changed to HEAD later on) */
761 data->set.httpreq = HTTPREQ_GET;
763 case CURLOPT_FILETIME:
765 * Try to get the file time of the remote document. The time will
766 * later (possibly) become available using curl_easy_getinfo().
768 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
770 case CURLOPT_FTP_CREATE_MISSING_DIRS:
772 * An FTP option that modifies an upload to create missing directories on
775 switch(va_arg(param, long)) {
777 data->set.ftp_create_missing_dirs = 0;
780 data->set.ftp_create_missing_dirs = 1;
783 data->set.ftp_create_missing_dirs = 2;
786 /* reserve other values for future use */
787 result = CURLE_UNKNOWN_OPTION;
791 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
793 * Option that specifies how quickly an server response must be obtained
794 * before it is considered failure. For pingpong protocols.
796 data->set.server_response_timeout = va_arg( param , long ) * 1000;
798 case CURLOPT_TFTP_BLKSIZE:
800 * TFTP option that specifies the block size to use for data transmission
802 data->set.tftp_blksize = va_arg(param, long);
804 case CURLOPT_DIRLISTONLY:
806 * An option that changes the command to one that asks for a list
807 * only, no file info details.
809 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
813 * We want to upload and append to an existing file.
815 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
817 case CURLOPT_FTP_FILEMETHOD:
819 * How do access files over FTP.
821 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
825 * Parse the $HOME/.netrc file
827 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
829 case CURLOPT_NETRC_FILE:
831 * Use this file instead of the $HOME/.netrc file
833 result = setstropt(&data->set.str[STRING_NETRC_FILE],
834 va_arg(param, char *));
836 case CURLOPT_TRANSFERTEXT:
838 * This option was previously named 'FTPASCII'. Renamed to work with
839 * more protocols than merely FTP.
841 * Transfer using ASCII (instead of BINARY).
843 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
845 case CURLOPT_TIMECONDITION:
847 * Set HTTP time condition. This must be one of the defines in the
848 * curl/curl.h header file.
850 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
852 case CURLOPT_TIMEVALUE:
854 * This is the value to compare with the remote document with the
855 * method set with CURLOPT_TIMECONDITION
857 data->set.timevalue = (time_t)va_arg(param, long);
859 case CURLOPT_SSLVERSION:
861 * Set explicit SSL version to try to connect with, as some SSL
862 * implementations are lame.
864 data->set.ssl.version = va_arg(param, long);
867 #ifndef CURL_DISABLE_HTTP
868 case CURLOPT_AUTOREFERER:
870 * Switch on automatic referer that gets set if curl follows locations.
872 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
875 case CURLOPT_ACCEPT_ENCODING:
877 * String to use at the value of Accept-Encoding header.
879 * If the encoding is set to "" we use an Accept-Encoding header that
880 * encompasses all the encodings we support.
881 * If the encoding is set to NULL we don't send an Accept-Encoding header
882 * and ignore an received Content-Encoding header.
885 argptr = va_arg(param, char *);
886 result = setstropt(&data->set.str[STRING_ENCODING],
887 (argptr && !*argptr)?
888 (char *) ALL_CONTENT_ENCODINGS: argptr);
891 case CURLOPT_TRANSFER_ENCODING:
892 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
895 case CURLOPT_FOLLOWLOCATION:
897 * Follow Location: header hints on a HTTP-server.
899 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
902 case CURLOPT_UNRESTRICTED_AUTH:
904 * Send authentication (user+password) when following locations, even when
907 data->set.http_disable_hostname_check_before_authentication =
908 (0 != va_arg(param, long))?TRUE:FALSE;
911 case CURLOPT_MAXREDIRS:
913 * The maximum amount of hops you allow curl to follow Location:
914 * headers. This should mostly be used to detect never-ending loops.
916 data->set.maxredirs = va_arg(param, long);
919 case CURLOPT_POSTREDIR:
922 * Set the behaviour of POST when redirecting
923 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
924 * CURL_REDIR_POST_301 - POST is kept as POST after 301
925 * CURL_REDIR_POST_302 - POST is kept as POST after 302
926 * CURL_REDIR_POST_303 - POST is kept as POST after 303
927 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
928 * other - POST is kept as POST after 301 and 302
930 int postRedir = curlx_sltosi(va_arg(param, long));
931 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
936 /* Does this option serve a purpose anymore? Yes it does, when
937 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
939 if(va_arg(param, long)) {
940 data->set.httpreq = HTTPREQ_POST;
941 data->set.opt_no_body = FALSE; /* this is implied */
944 data->set.httpreq = HTTPREQ_GET;
947 case CURLOPT_COPYPOSTFIELDS:
949 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
950 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
951 * CURLOPT_COPYPOSTFIELDS and not altered later.
953 argptr = va_arg(param, char *);
955 if(!argptr || data->set.postfieldsize == -1)
956 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
959 * Check that requested length does not overflow the size_t type.
962 if((data->set.postfieldsize < 0) ||
963 ((sizeof(curl_off_t) != sizeof(size_t)) &&
964 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
965 result = CURLE_OUT_OF_MEMORY;
969 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
971 /* Allocate even when size == 0. This satisfies the need of possible
972 later address compare to detect the COPYPOSTFIELDS mode, and
973 to mark that postfields is used rather than read function or
976 p = malloc((size_t)(data->set.postfieldsize?
977 data->set.postfieldsize:1));
980 result = CURLE_OUT_OF_MEMORY;
982 if(data->set.postfieldsize)
983 memcpy(p, argptr, (size_t)data->set.postfieldsize);
985 data->set.str[STRING_COPYPOSTFIELDS] = p;
990 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
991 data->set.httpreq = HTTPREQ_POST;
994 case CURLOPT_POSTFIELDS:
996 * Like above, but use static data instead of copying it.
998 data->set.postfields = va_arg(param, void *);
999 /* Release old copied data. */
1000 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1001 data->set.httpreq = HTTPREQ_POST;
1004 case CURLOPT_POSTFIELDSIZE:
1006 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1007 * figure it out. Enables binary posts.
1009 bigsize = va_arg(param, long);
1011 if(data->set.postfieldsize < bigsize &&
1012 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1013 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1014 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1015 data->set.postfields = NULL;
1018 data->set.postfieldsize = bigsize;
1021 case CURLOPT_POSTFIELDSIZE_LARGE:
1023 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1024 * figure it out. Enables binary posts.
1026 bigsize = va_arg(param, curl_off_t);
1028 if(data->set.postfieldsize < bigsize &&
1029 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1030 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1031 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1032 data->set.postfields = NULL;
1035 data->set.postfieldsize = bigsize;
1038 case CURLOPT_HTTPPOST:
1040 * Set to make us do HTTP POST
1042 data->set.httppost = va_arg(param, struct curl_httppost *);
1043 data->set.httpreq = HTTPREQ_POST_FORM;
1044 data->set.opt_no_body = FALSE; /* this is implied */
1047 case CURLOPT_REFERER:
1049 * String to set in the HTTP Referer: field.
1051 if(data->change.referer_alloc) {
1052 Curl_safefree(data->change.referer);
1053 data->change.referer_alloc = FALSE;
1055 result = setstropt(&data->set.str[STRING_SET_REFERER],
1056 va_arg(param, char *));
1057 data->change.referer = data->set.str[STRING_SET_REFERER];
1060 case CURLOPT_USERAGENT:
1062 * String to use in the HTTP User-Agent field
1064 result = setstropt(&data->set.str[STRING_USERAGENT],
1065 va_arg(param, char *));
1068 case CURLOPT_HTTPHEADER:
1070 * Set a list with HTTP headers to use (or replace internals with)
1072 data->set.headers = va_arg(param, struct curl_slist *);
1075 case CURLOPT_PROXYHEADER:
1077 * Set a list with proxy headers to use (or replace internals with)
1079 * Since CURLOPT_HTTPHEADER was the only way to set HTTP headers for a
1080 * long time we remain doing it this way until CURLOPT_PROXYHEADER is
1081 * used. As soon as this option has been used, if set to anything but
1082 * NULL, custom headers for proxies are only picked from this list.
1084 * Set this option to NULL to restore the previous behavior.
1086 data->set.proxyheaders = va_arg(param, struct curl_slist *);
1089 case CURLOPT_HEADEROPT:
1091 * Set header option.
1093 arg = va_arg(param, long);
1094 data->set.sep_headers = (arg & CURLHEADER_SEPARATE)? TRUE: FALSE;
1097 case CURLOPT_HTTP200ALIASES:
1099 * Set a list of aliases for HTTP 200 in response header
1101 data->set.http200aliases = va_arg(param, struct curl_slist *);
1104 #if !defined(CURL_DISABLE_COOKIES)
1105 case CURLOPT_COOKIE:
1107 * Cookie string to send to the remote server in the request.
1109 result = setstropt(&data->set.str[STRING_COOKIE],
1110 va_arg(param, char *));
1113 case CURLOPT_COOKIEFILE:
1115 * Set cookie file to read and parse. Can be used multiple times.
1117 argptr = (char *)va_arg(param, void *);
1119 struct curl_slist *cl;
1120 /* append the cookie file name to the list of file names, and deal with
1122 cl = curl_slist_append(data->change.cookielist, argptr);
1124 curl_slist_free_all(data->change.cookielist);
1125 data->change.cookielist = NULL;
1126 return CURLE_OUT_OF_MEMORY;
1128 data->change.cookielist = cl; /* store the list for later use */
1132 case CURLOPT_COOKIEJAR:
1134 * Set cookie file name to dump all cookies to when we're done.
1136 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1137 va_arg(param, char *));
1140 * Activate the cookie parser. This may or may not already
1143 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1144 data->set.cookiesession);
1147 case CURLOPT_COOKIESESSION:
1149 * Set this option to TRUE to start a new "cookie session". It will
1150 * prevent the forthcoming read-cookies-from-file actions to accept
1151 * cookies that are marked as being session cookies, as they belong to a
1154 * In the original Netscape cookie spec, "session cookies" are cookies
1155 * with no expire date set. RFC2109 describes the same action if no
1156 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1157 * a 'Discard' action that can enforce the discard even for cookies that
1160 * We run mostly with the original cookie spec, as hardly anyone implements
1163 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1166 case CURLOPT_COOKIELIST:
1167 argptr = va_arg(param, char *);
1172 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1174 if(Curl_raw_equal(argptr, "ALL")) {
1175 /* clear all cookies */
1176 Curl_cookie_clearall(data->cookies);
1178 else if(Curl_raw_equal(argptr, "SESS")) {
1179 /* clear session cookies */
1180 Curl_cookie_clearsess(data->cookies);
1182 else if(Curl_raw_equal(argptr, "FLUSH")) {
1183 /* flush cookies to file */
1184 Curl_flush_cookies(data, 0);
1188 /* if cookie engine was not running, activate it */
1189 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1191 argptr = strdup(argptr);
1193 result = CURLE_OUT_OF_MEMORY;
1197 if(checkprefix("Set-Cookie:", argptr))
1198 /* HTTP Header format line */
1199 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1202 /* Netscape format line */
1203 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1208 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1211 #endif /* CURL_DISABLE_COOKIES */
1213 case CURLOPT_HTTPGET:
1215 * Set to force us do HTTP GET
1217 if(va_arg(param, long)) {
1218 data->set.httpreq = HTTPREQ_GET;
1219 data->set.upload = FALSE; /* switch off upload */
1220 data->set.opt_no_body = FALSE; /* this is implied */
1224 case CURLOPT_HTTP_VERSION:
1226 * This sets a requested HTTP version to be used. The value is one of
1227 * the listed enums in curl/curl.h.
1229 arg = va_arg(param, long);
1231 if(arg == CURL_HTTP_VERSION_2_0)
1232 return CURLE_UNSUPPORTED_PROTOCOL;
1234 data->set.httpversion = arg;
1237 case CURLOPT_HTTPAUTH:
1239 * Set HTTP Authentication type BITMASK.
1244 unsigned long auth = va_arg(param, unsigned long);
1246 if(auth == CURLAUTH_NONE) {
1247 data->set.httpauth = auth;
1251 /* the DIGEST_IE bit is only used to set a special marker, for all the
1252 rest we need to handle it as normal DIGEST */
1253 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1255 if(auth & CURLAUTH_DIGEST_IE) {
1256 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1257 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1260 /* switch off bits we can't support */
1262 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1263 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1264 #elif !defined(NTLM_WB_ENABLED)
1265 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1267 #ifndef USE_HTTP_NEGOTIATE
1268 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1272 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1275 while(bitcheck < 31) {
1276 if(auth & (1UL << bitcheck++)) {
1282 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1284 data->set.httpauth = auth;
1288 case CURLOPT_EXPECT_100_TIMEOUT_MS:
1290 * Time to wait for a response to a HTTP request containing an
1291 * Expect: 100-continue header before sending the data anyway.
1293 data->set.expect_100_timeout = va_arg(param, long);
1296 #endif /* CURL_DISABLE_HTTP */
1298 case CURLOPT_CUSTOMREQUEST:
1300 * Set a custom string to use as request
1302 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1303 va_arg(param, char *));
1306 data->set.httpreq = HTTPREQ_CUSTOM;
1307 here, we continue as if we were using the already set type
1308 and this just changes the actual request keyword */
1311 #ifndef CURL_DISABLE_PROXY
1312 case CURLOPT_HTTPPROXYTUNNEL:
1314 * Tunnel operations through the proxy instead of normal proxy use
1316 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1319 case CURLOPT_PROXYPORT:
1321 * Explicitly set HTTP proxy port number.
1323 data->set.proxyport = va_arg(param, long);
1326 case CURLOPT_PROXYAUTH:
1328 * Set HTTP Authentication type BITMASK.
1333 unsigned long auth = va_arg(param, unsigned long);
1335 if(auth == CURLAUTH_NONE) {
1336 data->set.proxyauth = auth;
1340 /* the DIGEST_IE bit is only used to set a special marker, for all the
1341 rest we need to handle it as normal DIGEST */
1342 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1344 if(auth & CURLAUTH_DIGEST_IE) {
1345 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1346 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1348 /* switch off bits we can't support */
1350 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1351 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1352 #elif !defined(NTLM_WB_ENABLED)
1353 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1355 #ifndef USE_HTTP_NEGOTIATE
1356 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1360 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1363 while(bitcheck < 31) {
1364 if(auth & (1UL << bitcheck++)) {
1370 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1372 data->set.proxyauth = auth;
1378 * Set proxy server:port to use as HTTP proxy.
1380 * If the proxy is set to "" we explicitly say that we don't want to use a
1381 * proxy (even though there might be environment variables saying so).
1383 * Setting it to NULL, means no proxy but allows the environment variables
1386 result = setstropt(&data->set.str[STRING_PROXY],
1387 va_arg(param, char *));
1390 case CURLOPT_PROXYTYPE:
1392 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1394 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1397 case CURLOPT_PROXY_TRANSFER_MODE:
1399 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1401 switch (va_arg(param, long)) {
1403 data->set.proxy_transfer_mode = FALSE;
1406 data->set.proxy_transfer_mode = TRUE;
1409 /* reserve other values for future use */
1410 result = CURLE_UNKNOWN_OPTION;
1414 #endif /* CURL_DISABLE_PROXY */
1416 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1417 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1419 * Set gssapi service name
1421 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1422 va_arg(param, char *));
1425 case CURLOPT_SOCKS5_GSSAPI_NEC:
1427 * set flag for nec socks5 support
1429 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1433 case CURLOPT_WRITEHEADER:
1435 * Custom pointer to pass the header write callback function
1437 data->set.writeheader = (void *)va_arg(param, void *);
1439 case CURLOPT_ERRORBUFFER:
1441 * Error buffer provided by the caller to get the human readable
1444 data->set.errorbuffer = va_arg(param, char *);
1448 * FILE pointer to write to. Or possibly
1449 * used as argument to the write callback.
1451 data->set.out = va_arg(param, void *);
1453 case CURLOPT_FTPPORT:
1455 * Use FTP PORT, this also specifies which IP address to use
1457 result = setstropt(&data->set.str[STRING_FTPPORT],
1458 va_arg(param, char *));
1459 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1463 case CURLOPT_FTP_USE_EPRT:
1464 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1467 case CURLOPT_FTP_USE_EPSV:
1468 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1471 case CURLOPT_FTP_USE_PRET:
1472 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1475 case CURLOPT_FTP_SSL_CCC:
1476 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1479 case CURLOPT_FTP_SKIP_PASV_IP:
1481 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1482 * bypass of the IP address in PASV responses.
1484 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1487 case CURLOPT_INFILE:
1489 * FILE pointer to read the file to be uploaded from. Or possibly
1490 * used as argument to the read callback.
1492 data->set.in = va_arg(param, void *);
1494 case CURLOPT_INFILESIZE:
1496 * If known, this should inform curl about the file size of the
1497 * to-be-uploaded file.
1499 data->set.filesize = va_arg(param, long);
1501 case CURLOPT_INFILESIZE_LARGE:
1503 * If known, this should inform curl about the file size of the
1504 * to-be-uploaded file.
1506 data->set.filesize = va_arg(param, curl_off_t);
1508 case CURLOPT_LOW_SPEED_LIMIT:
1510 * The low speed limit that if transfers are below this for
1511 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1513 data->set.low_speed_limit=va_arg(param, long);
1515 case CURLOPT_MAX_SEND_SPEED_LARGE:
1517 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1518 * bytes per second the transfer is throttled..
1520 data->set.max_send_speed=va_arg(param, curl_off_t);
1522 case CURLOPT_MAX_RECV_SPEED_LARGE:
1524 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1525 * second the transfer is throttled..
1527 data->set.max_recv_speed=va_arg(param, curl_off_t);
1529 case CURLOPT_LOW_SPEED_TIME:
1531 * The low speed time that if transfers are below the set
1532 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1534 data->set.low_speed_time=va_arg(param, long);
1540 if(data->change.url_alloc) {
1541 /* the already set URL is allocated, free it first! */
1542 Curl_safefree(data->change.url);
1543 data->change.url_alloc = FALSE;
1545 result = setstropt(&data->set.str[STRING_SET_URL],
1546 va_arg(param, char *));
1547 data->change.url = data->set.str[STRING_SET_URL];
1551 * The port number to use when getting the URL
1553 data->set.use_port = va_arg(param, long);
1555 case CURLOPT_TIMEOUT:
1557 * The maximum time you allow curl to use for a single transfer
1560 data->set.timeout = va_arg(param, long) * 1000L;
1563 case CURLOPT_TIMEOUT_MS:
1564 data->set.timeout = va_arg(param, long);
1567 case CURLOPT_CONNECTTIMEOUT:
1569 * The maximum time you allow curl to use to connect.
1571 data->set.connecttimeout = va_arg(param, long) * 1000L;
1574 case CURLOPT_CONNECTTIMEOUT_MS:
1575 data->set.connecttimeout = va_arg(param, long);
1578 case CURLOPT_ACCEPTTIMEOUT_MS:
1580 * The maximum time you allow curl to wait for server connect
1582 data->set.accepttimeout = va_arg(param, long);
1585 case CURLOPT_USERPWD:
1587 * user:password to use in the operation
1589 result = setstropt_userpwd(va_arg(param, char *),
1590 &data->set.str[STRING_USERNAME],
1591 &data->set.str[STRING_PASSWORD]);
1594 case CURLOPT_USERNAME:
1596 * authentication user name to use in the operation
1598 result = setstropt(&data->set.str[STRING_USERNAME],
1599 va_arg(param, char *));
1602 case CURLOPT_PASSWORD:
1604 * authentication password to use in the operation
1606 result = setstropt(&data->set.str[STRING_PASSWORD],
1607 va_arg(param, char *));
1610 case CURLOPT_LOGIN_OPTIONS:
1612 * authentication options to use in the operation
1614 result = setstropt(&data->set.str[STRING_OPTIONS],
1615 va_arg(param, char *));
1618 case CURLOPT_XOAUTH2_BEARER:
1620 * XOAUTH2 bearer token to use in the operation
1622 result = setstropt(&data->set.str[STRING_BEARER],
1623 va_arg(param, char *));
1626 case CURLOPT_POSTQUOTE:
1628 * List of RAW FTP commands to use after a transfer
1630 data->set.postquote = va_arg(param, struct curl_slist *);
1632 case CURLOPT_PREQUOTE:
1634 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1636 data->set.prequote = va_arg(param, struct curl_slist *);
1640 * List of RAW FTP commands to use before a transfer
1642 data->set.quote = va_arg(param, struct curl_slist *);
1644 case CURLOPT_RESOLVE:
1646 * List of NAME:[address] names to populate the DNS cache with
1647 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1649 * Names added with this API will remain in the cache until explicitly
1650 * removed or the handle is cleaned up.
1652 * This API can remove any name from the DNS cache, but only entries
1653 * that aren't actually in use right now will be pruned immediately.
1655 data->set.resolve = va_arg(param, struct curl_slist *);
1656 data->change.resolve = data->set.resolve;
1658 case CURLOPT_PROGRESSFUNCTION:
1660 * Progress callback function
1662 data->set.fprogress = va_arg(param, curl_progress_callback);
1663 if(data->set.fprogress)
1664 data->progress.callback = TRUE; /* no longer internal */
1666 data->progress.callback = FALSE; /* NULL enforces internal */
1669 case CURLOPT_XFERINFOFUNCTION:
1671 * Transfer info callback function
1673 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1674 if(data->set.fxferinfo)
1675 data->progress.callback = TRUE; /* no longer internal */
1677 data->progress.callback = FALSE; /* NULL enforces internal */
1681 case CURLOPT_PROGRESSDATA:
1683 * Custom client data to pass to the progress callback
1685 data->set.progress_client = va_arg(param, void *);
1688 #ifndef CURL_DISABLE_PROXY
1689 case CURLOPT_PROXYUSERPWD:
1691 * user:password needed to use the proxy
1693 result = setstropt_userpwd(va_arg(param, char *),
1694 &data->set.str[STRING_PROXYUSERNAME],
1695 &data->set.str[STRING_PROXYPASSWORD]);
1697 case CURLOPT_PROXYUSERNAME:
1699 * authentication user name to use in the operation
1701 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1702 va_arg(param, char *));
1704 case CURLOPT_PROXYPASSWORD:
1706 * authentication password to use in the operation
1708 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1709 va_arg(param, char *));
1711 case CURLOPT_NOPROXY:
1713 * proxy exception list
1715 result = setstropt(&data->set.str[STRING_NOPROXY],
1716 va_arg(param, char *));
1722 * What range of the file you want to transfer
1724 result = setstropt(&data->set.str[STRING_SET_RANGE],
1725 va_arg(param, char *));
1727 case CURLOPT_RESUME_FROM:
1729 * Resume transfer at the give file position
1731 data->set.set_resume_from = va_arg(param, long);
1733 case CURLOPT_RESUME_FROM_LARGE:
1735 * Resume transfer at the give file position
1737 data->set.set_resume_from = va_arg(param, curl_off_t);
1739 case CURLOPT_DEBUGFUNCTION:
1741 * stderr write callback.
1743 data->set.fdebug = va_arg(param, curl_debug_callback);
1745 * if the callback provided is NULL, it'll use the default callback
1748 case CURLOPT_DEBUGDATA:
1750 * Set to a void * that should receive all error writes. This
1751 * defaults to CURLOPT_STDERR for normal operations.
1753 data->set.debugdata = va_arg(param, void *);
1755 case CURLOPT_STDERR:
1757 * Set to a FILE * that should receive all error writes. This
1758 * defaults to stderr for normal operations.
1760 data->set.err = va_arg(param, FILE *);
1762 data->set.err = stderr;
1764 case CURLOPT_HEADERFUNCTION:
1766 * Set header write callback
1768 data->set.fwrite_header = va_arg(param, curl_write_callback);
1770 case CURLOPT_WRITEFUNCTION:
1772 * Set data write callback
1774 data->set.fwrite_func = va_arg(param, curl_write_callback);
1775 if(!data->set.fwrite_func) {
1776 data->set.is_fwrite_set = 0;
1777 /* When set to NULL, reset to our internal default function */
1778 data->set.fwrite_func = (curl_write_callback)fwrite;
1781 data->set.is_fwrite_set = 1;
1783 case CURLOPT_READFUNCTION:
1785 * Read data callback
1787 data->set.fread_func = va_arg(param, curl_read_callback);
1788 if(!data->set.fread_func) {
1789 data->set.is_fread_set = 0;
1790 /* When set to NULL, reset to our internal default function */
1791 data->set.fread_func = (curl_read_callback)fread;
1794 data->set.is_fread_set = 1;
1796 case CURLOPT_SEEKFUNCTION:
1798 * Seek callback. Might be NULL.
1800 data->set.seek_func = va_arg(param, curl_seek_callback);
1802 case CURLOPT_SEEKDATA:
1804 * Seek control callback. Might be NULL.
1806 data->set.seek_client = va_arg(param, void *);
1808 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1810 * "Convert from network encoding" callback
1812 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1814 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1816 * "Convert to network encoding" callback
1818 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1820 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1822 * "Convert from UTF-8 encoding" callback
1824 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1826 case CURLOPT_IOCTLFUNCTION:
1828 * I/O control callback. Might be NULL.
1830 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1832 case CURLOPT_IOCTLDATA:
1834 * I/O control data pointer. Might be NULL.
1836 data->set.ioctl_client = va_arg(param, void *);
1838 case CURLOPT_SSLCERT:
1840 * String that holds file name of the SSL certificate to use
1842 result = setstropt(&data->set.str[STRING_CERT],
1843 va_arg(param, char *));
1845 case CURLOPT_SSLCERTTYPE:
1847 * String that holds file type of the SSL certificate to use
1849 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1850 va_arg(param, char *));
1852 case CURLOPT_SSLKEY:
1854 * String that holds file name of the SSL key to use
1856 result = setstropt(&data->set.str[STRING_KEY],
1857 va_arg(param, char *));
1859 case CURLOPT_SSLKEYTYPE:
1861 * String that holds file type of the SSL key to use
1863 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1864 va_arg(param, char *));
1866 case CURLOPT_KEYPASSWD:
1868 * String that holds the SSL or SSH private key password.
1870 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1871 va_arg(param, char *));
1873 case CURLOPT_SSLENGINE:
1875 * String that holds the SSL crypto engine.
1877 argptr = va_arg(param, char *);
1878 if(argptr && argptr[0])
1879 result = Curl_ssl_set_engine(data, argptr);
1882 case CURLOPT_SSLENGINE_DEFAULT:
1884 * flag to set engine as default.
1886 result = Curl_ssl_set_engine_default(data);
1890 * Kludgy option to enable CRLF conversions. Subject for removal.
1892 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1895 case CURLOPT_INTERFACE:
1897 * Set what interface or address/hostname to bind the socket to when
1898 * performing an operation and thus what from-IP your connection will use.
1900 result = setstropt(&data->set.str[STRING_DEVICE],
1901 va_arg(param, char *));
1903 case CURLOPT_LOCALPORT:
1905 * Set what local port to bind the socket to when performing an operation.
1907 data->set.localport = curlx_sltous(va_arg(param, long));
1909 case CURLOPT_LOCALPORTRANGE:
1911 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1913 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1915 case CURLOPT_KRBLEVEL:
1917 * A string that defines the kerberos security level.
1919 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1920 va_arg(param, char *));
1921 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1923 case CURLOPT_GSSAPI_DELEGATION:
1925 * GSSAPI credential delegation
1927 data->set.gssapi_delegation = va_arg(param, long);
1929 case CURLOPT_SSL_VERIFYPEER:
1931 * Enable peer SSL verifying.
1933 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1935 case CURLOPT_SSL_VERIFYHOST:
1937 * Enable verification of the host name in the peer certificate
1939 arg = va_arg(param, long);
1941 /* Obviously people are not reading documentation and too many thought
1942 this argument took a boolean when it wasn't and misused it. We thus ban
1943 1 as a sensible input and we warn about its use. Then we only have the
1944 2 action internally stored as TRUE. */
1947 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1948 return CURLE_BAD_FUNCTION_ARGUMENT;
1951 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1954 /* since these two options are only possible to use on an OpenSSL-
1955 powered libcurl we #ifdef them on this condition so that libcurls
1956 built against other SSL libs will return a proper error when trying
1957 to set this option! */
1958 case CURLOPT_SSL_CTX_FUNCTION:
1960 * Set a SSL_CTX callback
1962 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1964 case CURLOPT_SSL_CTX_DATA:
1966 * Set a SSL_CTX callback parameter pointer
1968 data->set.ssl.fsslctxp = va_arg(param, void *);
1971 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1973 case CURLOPT_CERTINFO:
1974 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1977 case CURLOPT_CAINFO:
1979 * Set CA info for SSL connection. Specify file name of the CA certificate
1981 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1982 va_arg(param, char *));
1984 case CURLOPT_CAPATH:
1986 * Set CA path info for SSL connection. Specify directory name of the CA
1987 * certificates which have been prepared using openssl c_rehash utility.
1989 /* This does not work on windows. */
1990 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1991 va_arg(param, char *));
1993 case CURLOPT_CRLFILE:
1995 * Set CRL file info for SSL connection. Specify file name of the CRL
1996 * to check certificates revocation
1998 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1999 va_arg(param, char *));
2001 case CURLOPT_ISSUERCERT:
2003 * Set Issuer certificate file
2004 * to check certificates issuer
2006 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
2007 va_arg(param, char *));
2009 case CURLOPT_TELNETOPTIONS:
2011 * Set a linked list of telnet options
2013 data->set.telnet_options = va_arg(param, struct curl_slist *);
2016 case CURLOPT_BUFFERSIZE:
2018 * The application kindly asks for a differently sized receive buffer.
2019 * If it seems reasonable, we'll use it.
2021 data->set.buffer_size = va_arg(param, long);
2023 if((data->set.buffer_size> (BUFSIZE -1 )) ||
2024 (data->set.buffer_size < 1))
2025 data->set.buffer_size = 0; /* huge internal default */
2029 case CURLOPT_NOSIGNAL:
2031 * The application asks not to set any signal() or alarm() handlers,
2032 * even when using a timeout.
2034 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
2039 struct Curl_share *set;
2040 set = va_arg(param, struct Curl_share *);
2042 /* disconnect from old share, if any */
2044 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2046 if(data->dns.hostcachetype == HCACHE_SHARED) {
2047 data->dns.hostcache = NULL;
2048 data->dns.hostcachetype = HCACHE_NONE;
2051 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2052 if(data->share->cookies == data->cookies)
2053 data->cookies = NULL;
2056 if(data->share->sslsession == data->state.session)
2057 data->state.session = NULL;
2059 data->share->dirty--;
2061 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2065 /* use new share if it set */
2069 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2071 data->share->dirty++;
2073 if(data->share->hostcache) {
2074 /* use shared host cache */
2075 data->dns.hostcache = data->share->hostcache;
2076 data->dns.hostcachetype = HCACHE_SHARED;
2078 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2079 if(data->share->cookies) {
2080 /* use shared cookie list, first free own one if any */
2082 Curl_cookie_cleanup(data->cookies);
2083 /* enable cookies since we now use a share that uses cookies! */
2084 data->cookies = data->share->cookies;
2086 #endif /* CURL_DISABLE_HTTP */
2087 if(data->share->sslsession) {
2088 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2089 data->state.session = data->share->sslsession;
2091 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2094 /* check for host cache not needed,
2095 * it will be done by curl_easy_perform */
2099 case CURLOPT_PRIVATE:
2101 * Set private data pointer.
2103 data->set.private_data = va_arg(param, void *);
2106 case CURLOPT_MAXFILESIZE:
2108 * Set the maximum size of a file to download.
2110 data->set.max_filesize = va_arg(param, long);
2114 case CURLOPT_USE_SSL:
2116 * Make transfers attempt to use SSL/TLS.
2118 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2121 case CURLOPT_SSL_OPTIONS:
2122 arg = va_arg(param, long);
2123 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2127 case CURLOPT_FTPSSLAUTH:
2129 * Set a specific auth for FTP-SSL transfers.
2131 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2134 case CURLOPT_IPRESOLVE:
2135 data->set.ipver = va_arg(param, long);
2138 case CURLOPT_MAXFILESIZE_LARGE:
2140 * Set the maximum size of a file to download.
2142 data->set.max_filesize = va_arg(param, curl_off_t);
2145 case CURLOPT_TCP_NODELAY:
2147 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2150 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2153 case CURLOPT_FTP_ACCOUNT:
2154 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2155 va_arg(param, char *));
2158 case CURLOPT_IGNORE_CONTENT_LENGTH:
2159 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2162 case CURLOPT_CONNECT_ONLY:
2164 * No data transfer, set up connection and let application use the socket
2166 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2169 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2170 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2171 va_arg(param, char *));
2174 case CURLOPT_SOCKOPTFUNCTION:
2176 * socket callback function: called after socket() but before connect()
2178 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2181 case CURLOPT_SOCKOPTDATA:
2183 * socket callback data pointer. Might be NULL.
2185 data->set.sockopt_client = va_arg(param, void *);
2188 case CURLOPT_OPENSOCKETFUNCTION:
2190 * open/create socket callback function: called instead of socket(),
2193 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2196 case CURLOPT_OPENSOCKETDATA:
2198 * socket callback data pointer. Might be NULL.
2200 data->set.opensocket_client = va_arg(param, void *);
2203 case CURLOPT_CLOSESOCKETFUNCTION:
2205 * close socket callback function: called instead of close()
2206 * when shutting down a connection
2208 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2211 case CURLOPT_CLOSESOCKETDATA:
2213 * socket callback data pointer. Might be NULL.
2215 data->set.closesocket_client = va_arg(param, void *);
2218 case CURLOPT_SSL_SESSIONID_CACHE:
2219 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2223 /* we only include SSH options if explicitly built to support SSH */
2224 case CURLOPT_SSH_AUTH_TYPES:
2225 data->set.ssh_auth_types = va_arg(param, long);
2228 case CURLOPT_SSH_PUBLIC_KEYFILE:
2230 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2232 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2233 va_arg(param, char *));
2236 case CURLOPT_SSH_PRIVATE_KEYFILE:
2238 * Use this file instead of the $HOME/.ssh/id_dsa file
2240 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2241 va_arg(param, char *));
2243 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2245 * Option to allow for the MD5 of the host public key to be checked
2246 * for validation purposes.
2248 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2249 va_arg(param, char *));
2251 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2252 case CURLOPT_SSH_KNOWNHOSTS:
2254 * Store the file name to read known hosts from.
2256 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2257 va_arg(param, char *));
2260 case CURLOPT_SSH_KEYFUNCTION:
2261 /* setting to NULL is fine since the ssh.c functions themselves will
2262 then rever to use the internal default */
2263 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2266 case CURLOPT_SSH_KEYDATA:
2268 * Custom client data to pass to the SSH keyfunc callback
2270 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2272 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2274 #endif /* USE_LIBSSH2 */
2276 case CURLOPT_HTTP_TRANSFER_DECODING:
2278 * disable libcurl transfer encoding is used
2280 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2283 case CURLOPT_HTTP_CONTENT_DECODING:
2285 * raw data passed to the application when content encoding is used
2287 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2290 case CURLOPT_NEW_FILE_PERMS:
2292 * Uses these permissions instead of 0644
2294 data->set.new_file_perms = va_arg(param, long);
2297 case CURLOPT_NEW_DIRECTORY_PERMS:
2299 * Uses these permissions instead of 0755
2301 data->set.new_directory_perms = va_arg(param, long);
2304 case CURLOPT_ADDRESS_SCOPE:
2306 * We always get longs when passed plain numericals, but for this value we
2307 * know that an unsigned int will always hold the value so we blindly
2308 * typecast to this type
2310 data->set.scope = curlx_sltoui(va_arg(param, long));
2313 case CURLOPT_PROTOCOLS:
2314 /* set the bitmask for the protocols that are allowed to be used for the
2315 transfer, which thus helps the app which takes URLs from users or other
2316 external inputs and want to restrict what protocol(s) to deal
2317 with. Defaults to CURLPROTO_ALL. */
2318 data->set.allowed_protocols = va_arg(param, long);
2321 case CURLOPT_REDIR_PROTOCOLS:
2322 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2323 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2324 to be set in both bitmasks to be allowed to get redirected to. Defaults
2325 to all protocols except FILE and SCP. */
2326 data->set.redir_protocols = va_arg(param, long);
2329 case CURLOPT_MAIL_FROM:
2330 /* Set the SMTP mail originator */
2331 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2332 va_arg(param, char *));
2335 case CURLOPT_MAIL_AUTH:
2336 /* Set the SMTP auth originator */
2337 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2338 va_arg(param, char *));
2341 case CURLOPT_MAIL_RCPT:
2342 /* Set the list of mail recipients */
2343 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2346 case CURLOPT_SASL_IR:
2347 /* Enable/disable SASL initial response */
2348 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2351 case CURLOPT_RTSP_REQUEST:
2354 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2355 * Would this be better if the RTSPREQ_* were just moved into here?
2357 long curl_rtspreq = va_arg(param, long);
2358 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2359 switch(curl_rtspreq) {
2360 case CURL_RTSPREQ_OPTIONS:
2361 rtspreq = RTSPREQ_OPTIONS;
2364 case CURL_RTSPREQ_DESCRIBE:
2365 rtspreq = RTSPREQ_DESCRIBE;
2368 case CURL_RTSPREQ_ANNOUNCE:
2369 rtspreq = RTSPREQ_ANNOUNCE;
2372 case CURL_RTSPREQ_SETUP:
2373 rtspreq = RTSPREQ_SETUP;
2376 case CURL_RTSPREQ_PLAY:
2377 rtspreq = RTSPREQ_PLAY;
2380 case CURL_RTSPREQ_PAUSE:
2381 rtspreq = RTSPREQ_PAUSE;
2384 case CURL_RTSPREQ_TEARDOWN:
2385 rtspreq = RTSPREQ_TEARDOWN;
2388 case CURL_RTSPREQ_GET_PARAMETER:
2389 rtspreq = RTSPREQ_GET_PARAMETER;
2392 case CURL_RTSPREQ_SET_PARAMETER:
2393 rtspreq = RTSPREQ_SET_PARAMETER;
2396 case CURL_RTSPREQ_RECORD:
2397 rtspreq = RTSPREQ_RECORD;
2400 case CURL_RTSPREQ_RECEIVE:
2401 rtspreq = RTSPREQ_RECEIVE;
2404 rtspreq = RTSPREQ_NONE;
2407 data->set.rtspreq = rtspreq;
2412 case CURLOPT_RTSP_SESSION_ID:
2414 * Set the RTSP Session ID manually. Useful if the application is
2415 * resuming a previously established RTSP session
2417 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2418 va_arg(param, char *));
2421 case CURLOPT_RTSP_STREAM_URI:
2423 * Set the Stream URI for the RTSP request. Unless the request is
2424 * for generic server options, the application will need to set this.
2426 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2427 va_arg(param, char *));
2430 case CURLOPT_RTSP_TRANSPORT:
2432 * The content of the Transport: header for the RTSP request
2434 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2435 va_arg(param, char *));
2438 case CURLOPT_RTSP_CLIENT_CSEQ:
2440 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2441 * application is resuming a previously broken connection. The CSEQ
2442 * will increment from this new number henceforth.
2444 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2447 case CURLOPT_RTSP_SERVER_CSEQ:
2448 /* Same as the above, but for server-initiated requests */
2449 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2452 case CURLOPT_INTERLEAVEDATA:
2453 data->set.rtp_out = va_arg(param, void *);
2455 case CURLOPT_INTERLEAVEFUNCTION:
2456 /* Set the user defined RTP write function */
2457 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2460 case CURLOPT_WILDCARDMATCH:
2461 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2463 case CURLOPT_CHUNK_BGN_FUNCTION:
2464 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2466 case CURLOPT_CHUNK_END_FUNCTION:
2467 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2469 case CURLOPT_FNMATCH_FUNCTION:
2470 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2472 case CURLOPT_CHUNK_DATA:
2473 data->wildcard.customptr = va_arg(param, void *);
2475 case CURLOPT_FNMATCH_DATA:
2476 data->set.fnmatch_data = va_arg(param, void *);
2479 case CURLOPT_TLSAUTH_USERNAME:
2480 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2481 va_arg(param, char *));
2482 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2483 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2485 case CURLOPT_TLSAUTH_PASSWORD:
2486 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2487 va_arg(param, char *));
2488 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2489 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2491 case CURLOPT_TLSAUTH_TYPE:
2492 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2493 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2495 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2498 case CURLOPT_DNS_SERVERS:
2499 result = Curl_set_dns_servers(data, va_arg(param, char *));
2501 case CURLOPT_DNS_INTERFACE:
2502 result = Curl_set_dns_interface(data, va_arg(param, char *));
2504 case CURLOPT_DNS_LOCAL_IP4:
2505 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2507 case CURLOPT_DNS_LOCAL_IP6:
2508 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2511 case CURLOPT_TCP_KEEPALIVE:
2512 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2514 case CURLOPT_TCP_KEEPIDLE:
2515 data->set.tcp_keepidle = va_arg(param, long);
2517 case CURLOPT_TCP_KEEPINTVL:
2518 data->set.tcp_keepintvl = va_arg(param, long);
2520 case CURLOPT_SSL_ENABLE_NPN:
2521 data->set.ssl_enable_npn = (0 != va_arg(param, long))?TRUE:FALSE;
2523 case CURLOPT_SSL_ENABLE_ALPN:
2524 data->set.ssl_enable_alpn = (0 != va_arg(param, long))?TRUE:FALSE;
2528 /* unknown tag and its companion, just ignore: */
2529 result = CURLE_UNKNOWN_OPTION;
2536 static void conn_free(struct connectdata *conn)
2541 /* possible left-overs from the async name resolvers */
2542 Curl_resolver_cancel(conn);
2544 /* close the SSL stuff before we close any sockets since they will/may
2545 write to the sockets */
2546 Curl_ssl_close(conn, FIRSTSOCKET);
2547 Curl_ssl_close(conn, SECONDARYSOCKET);
2549 /* close possibly still open sockets */
2550 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2551 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2552 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2553 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2554 if(CURL_SOCKET_BAD != conn->tempsock[0])
2555 Curl_closesocket(conn, conn->tempsock[0]);
2556 if(CURL_SOCKET_BAD != conn->tempsock[1])
2557 Curl_closesocket(conn, conn->tempsock[1]);
2559 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2560 Curl_ntlm_wb_cleanup(conn);
2563 Curl_safefree(conn->user);
2564 Curl_safefree(conn->passwd);
2565 Curl_safefree(conn->xoauth2_bearer);
2566 Curl_safefree(conn->options);
2567 Curl_safefree(conn->proxyuser);
2568 Curl_safefree(conn->proxypasswd);
2569 Curl_safefree(conn->allocptr.proxyuserpwd);
2570 Curl_safefree(conn->allocptr.uagent);
2571 Curl_safefree(conn->allocptr.userpwd);
2572 Curl_safefree(conn->allocptr.accept_encoding);
2573 Curl_safefree(conn->allocptr.te);
2574 Curl_safefree(conn->allocptr.rangeline);
2575 Curl_safefree(conn->allocptr.ref);
2576 Curl_safefree(conn->allocptr.host);
2577 Curl_safefree(conn->allocptr.cookiehost);
2578 Curl_safefree(conn->allocptr.rtsp_transport);
2579 Curl_safefree(conn->trailer);
2580 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2581 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2582 Curl_safefree(conn->master_buffer);
2584 Curl_llist_destroy(conn->send_pipe, NULL);
2585 Curl_llist_destroy(conn->recv_pipe, NULL);
2587 conn->send_pipe = NULL;
2588 conn->recv_pipe = NULL;
2590 Curl_safefree(conn->localdev);
2591 Curl_free_ssl_config(&conn->ssl_config);
2593 free(conn); /* free all the connection oriented data */
2596 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2598 struct SessionHandle *data;
2600 return CURLE_OK; /* this is closed and fine already */
2604 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2608 if(conn->dns_entry != NULL) {
2609 Curl_resolv_unlock(data, conn->dns_entry);
2610 conn->dns_entry = NULL;
2613 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2616 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2617 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2619 /* Authentication data is a mix of connection-related and sessionhandle-
2620 related stuff. NTLM is connection-related so when we close the shop
2624 data->state.authhost.done = FALSE;
2625 data->state.authhost.picked =
2626 data->state.authhost.want;
2629 if(has_proxy_ntlm) {
2630 data->state.authproxy.done = FALSE;
2631 data->state.authproxy.picked =
2632 data->state.authproxy.want;
2635 if(has_host_ntlm || has_proxy_ntlm)
2636 data->state.authproblem = FALSE;
2639 /* Cleanup NTLM connection-related data */
2640 Curl_http_ntlm_cleanup(conn);
2642 /* Cleanup possible redirect junk */
2643 if(data->req.newurl) {
2644 free(data->req.newurl);
2645 data->req.newurl = NULL;
2648 if(conn->handler->disconnect)
2649 /* This is set if protocol-specific cleanups should be made */
2650 conn->handler->disconnect(conn, dead_connection);
2652 /* unlink ourselves! */
2653 infof(data, "Closing connection %ld\n", conn->connection_id);
2654 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2656 #if defined(USE_LIBIDN)
2657 if(conn->host.encalloc)
2658 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2659 with idn_free() since this was allocated
2661 if(conn->proxy.encalloc)
2662 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2663 freed with idn_free() since this was
2664 allocated by libidn */
2665 #elif defined(USE_WIN32_IDN)
2666 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2667 idn_free() since this was allocated by
2668 curl_win32_idn_to_ascii */
2669 if(conn->proxy.encalloc)
2670 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2671 with idn_free() since this was allocated by
2672 curl_win32_idn_to_ascii */
2675 Curl_ssl_close(conn, FIRSTSOCKET);
2677 /* Indicate to all handles on the pipe that we're dead */
2678 if(Curl_multi_pipeline_enabled(data->multi)) {
2679 signalPipeClose(conn->send_pipe, TRUE);
2680 signalPipeClose(conn->recv_pipe, TRUE);
2685 Curl_speedinit(data);
2691 * This function should return TRUE if the socket is to be assumed to
2692 * be dead. Most commonly this happens when the server has closed the
2693 * connection due to inactivity.
2695 static bool SocketIsDead(curl_socket_t sock)
2698 bool ret_val = TRUE;
2700 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2708 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2709 const struct connectdata *conn)
2711 if((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
2712 Curl_multi_pipeline_enabled(handle->multi) &&
2713 (handle->set.httpreq == HTTPREQ_GET ||
2714 handle->set.httpreq == HTTPREQ_HEAD) &&
2715 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2721 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2723 return Curl_multi_pipeline_enabled(handle->multi);
2726 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2727 struct curl_llist *pipeline)
2729 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2730 return CURLE_OUT_OF_MEMORY;
2734 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2735 struct curl_llist *pipeline)
2737 struct curl_llist_element *curr;
2739 curr = pipeline->head;
2741 if(curr->ptr == handle) {
2742 Curl_llist_remove(pipeline, curr, NULL);
2743 return 1; /* we removed a handle */
2751 #if 0 /* this code is saved here as it is useful for debugging purposes */
2752 static void Curl_printPipeline(struct curl_llist *pipeline)
2754 struct curl_llist_element *curr;
2756 curr = pipeline->head;
2758 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2759 infof(data, "Handle in pipeline: %s\n", data->state.path);
2765 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2767 struct curl_llist_element *curr = pipeline->head;
2769 return (struct SessionHandle *) curr->ptr;
2775 /* remove the specified connection from all (possible) pipelines and related
2777 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2778 struct connectdata *conn)
2780 bool recv_head = (conn->readchannel_inuse &&
2781 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2783 bool send_head = (conn->writechannel_inuse &&
2784 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2786 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2787 conn->readchannel_inuse = FALSE;
2788 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2789 conn->writechannel_inuse = FALSE;
2792 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2794 struct curl_llist_element *curr;
2799 curr = pipeline->head;
2801 struct curl_llist_element *next = curr->next;
2802 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2804 #ifdef DEBUGBUILD /* debug-only code */
2805 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2807 infof(data, "signalPipeClose() found BAAD easy handle\n");
2812 data->state.pipe_broke = TRUE;
2813 Curl_multi_handlePipeBreak(data);
2814 Curl_llist_remove(pipeline, curr, NULL);
2820 * This function finds the connection in the connection
2821 * cache that has been unused for the longest time.
2823 * Returns the pointer to the oldest idle connection, or NULL if none was
2826 static struct connectdata *
2827 find_oldest_idle_connection(struct SessionHandle *data)
2829 struct conncache *bc = data->state.conn_cache;
2830 struct curl_hash_iterator iter;
2831 struct curl_llist_element *curr;
2832 struct curl_hash_element *he;
2836 struct connectdata *conn_candidate = NULL;
2837 struct connectbundle *bundle;
2841 Curl_hash_start_iterate(bc->hash, &iter);
2843 he = Curl_hash_next_element(&iter);
2845 struct connectdata *conn;
2849 curr = bundle->conn_list->head;
2854 /* Set higher score for the age passed since the connection was used */
2855 score = Curl_tvdiff(now, conn->now);
2857 if(score > highscore) {
2859 conn_candidate = conn;
2865 he = Curl_hash_next_element(&iter);
2868 return conn_candidate;
2872 * This function finds the connection in the connection
2873 * bundle that has been unused for the longest time.
2875 * Returns the pointer to the oldest idle connection, or NULL if none was
2878 static struct connectdata *
2879 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2880 struct connectbundle *bundle)
2882 struct curl_llist_element *curr;
2886 struct connectdata *conn_candidate = NULL;
2887 struct connectdata *conn;
2893 curr = bundle->conn_list->head;
2898 /* Set higher score for the age passed since the connection was used */
2899 score = Curl_tvdiff(now, conn->now);
2901 if(score > highscore) {
2903 conn_candidate = conn;
2909 return conn_candidate;
2913 * Given one filled in connection struct (named needle), this function should
2914 * detect if there already is one that has all the significant details
2915 * exactly the same and thus should be used instead.
2917 * If there is a match, this function returns TRUE - and has marked the
2918 * connection as 'in-use'. It must later be called with ConnectionDone() to
2919 * return back to 'idle' (unused) state.
2921 * The force_reuse flag is set if the connection must be used, even if
2922 * the pipelining strategy wants to open a new connection instead of reusing.
2925 ConnectionExists(struct SessionHandle *data,
2926 struct connectdata *needle,
2927 struct connectdata **usethis,
2930 struct connectdata *check;
2931 struct connectdata *chosen = 0;
2932 bool canPipeline = IsPipeliningPossible(data, needle);
2933 bool wantNTLMhttp = ((data->state.authhost.want & CURLAUTH_NTLM) ||
2934 (data->state.authhost.want & CURLAUTH_NTLM_WB)) &&
2935 (needle->handler->protocol & PROTO_FAMILY_HTTP) ? TRUE : FALSE;
2936 struct connectbundle *bundle;
2938 *force_reuse = FALSE;
2940 /* We can't pipe if the site is blacklisted */
2941 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2942 canPipeline = FALSE;
2945 /* Look up the bundle with all the connections to this
2947 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2950 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2951 size_t best_pipe_len = max_pipe_len;
2952 struct curl_llist_element *curr;
2954 infof(data, "Found bundle for host %s: %p\n",
2955 needle->host.name, (void *)bundle);
2957 /* We can't pipe if we don't know anything about the server */
2958 if(canPipeline && !bundle->server_supports_pipelining) {
2959 infof(data, "Server doesn't support pipelining\n");
2960 canPipeline = FALSE;
2963 curr = bundle->conn_list->head;
2966 bool credentialsMatch = FALSE;
2970 * Note that if we use a HTTP proxy, we check connections to that
2971 * proxy and not to the actual remote server.
2976 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2978 if(!pipeLen && !check->inuse) {
2979 /* The check for a dead socket makes sense only if there are no
2980 handles in pipeline and the connection isn't already marked in
2983 if(check->handler->protocol & CURLPROTO_RTSP)
2984 /* RTSP is a special case due to RTP interleaving */
2985 dead = Curl_rtsp_connisdead(check);
2987 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2991 infof(data, "Connection %ld seems to be dead!\n",
2992 check->connection_id);
2994 /* disconnect resources */
2995 Curl_disconnect(check, /* dead_connection */ TRUE);
3001 /* Make sure the pipe has only GET requests */
3002 struct SessionHandle* sh = gethandleathead(check->send_pipe);
3003 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
3005 if(!IsPipeliningPossible(sh, check))
3009 if(!IsPipeliningPossible(rh, check))
3015 /* can only happen within multi handles, and means that another easy
3016 handle is using this connection */
3020 if(Curl_resolver_asynch()) {
3021 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
3022 completed yet and until then we don't re-use this connection */
3023 if(!check->ip_addr_str[0]) {
3025 "Connection #%ld is still name resolving, can't reuse\n",
3026 check->connection_id);
3031 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
3032 check->bits.close) {
3033 /* Don't pick a connection that hasn't connected yet or that is going
3035 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
3036 check->connection_id);
3038 if(check->recv_pipe->size > 0) {
3040 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
3041 check->connection_id);
3048 if((needle->handler->flags&PROTOPT_SSL) !=
3049 (check->handler->flags&PROTOPT_SSL))
3050 /* don't do mixed SSL and non-SSL connections */
3051 if(!(needle->handler->protocol & check->handler->protocol))
3052 /* except protocols that have been upgraded via TLS */
3055 if(needle->handler->flags&PROTOPT_SSL) {
3056 if((data->set.ssl.verifypeer != check->verifypeer) ||
3057 (data->set.ssl.verifyhost != check->verifyhost))
3061 if(needle->bits.proxy != check->bits.proxy)
3062 /* don't do mixed proxy and non-proxy connections */
3065 if(!canPipeline && check->inuse)
3066 /* this request can't be pipelined but the checked connection is
3067 already in use so we skip it */
3070 if(needle->localdev || needle->localport) {
3071 /* If we are bound to a specific local end (IP+port), we must not
3072 re-use a random other one, although if we didn't ask for a
3073 particular one we can reuse one that was bound.
3075 This comparison is a bit rough and too strict. Since the input
3076 parameters can be specified in numerous ways and still end up the
3077 same it would take a lot of processing to make it really accurate.
3078 Instead, this matching will assume that re-uses of bound connections
3079 will most likely also re-use the exact same binding parameters and
3080 missing out a few edge cases shouldn't hurt anyone very much.
3082 if((check->localport != needle->localport) ||
3083 (check->localportrange != needle->localportrange) ||
3085 !needle->localdev ||
3086 strcmp(check->localdev, needle->localdev))
3090 if((!(needle->handler->flags & PROTOPT_CREDSPERREQUEST)) ||
3092 /* This protocol requires credentials per connection or is HTTP+NTLM,
3093 so verify that we're using the same name and password as well */
3094 if(!strequal(needle->user, check->user) ||
3095 !strequal(needle->passwd, check->passwd)) {
3096 /* one of them was different */
3099 credentialsMatch = TRUE;
3102 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3103 (needle->bits.httpproxy && check->bits.httpproxy &&
3104 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3105 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3106 (needle->port == check->port))) {
3107 /* The requested connection does not use a HTTP proxy or it uses SSL or
3108 it is a non-SSL protocol tunneled over the same http proxy name and
3109 port number or it is a non-SSL protocol which is allowed to be
3112 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3113 needle->handler->protocol & check->handler->protocol) &&
3114 Curl_raw_equal(needle->host.name, check->host.name) &&
3115 needle->remote_port == check->remote_port) {
3116 if(needle->handler->flags & PROTOPT_SSL) {
3117 /* This is a SSL connection so verify that we're using the same
3118 SSL options as well */
3119 if(!Curl_ssl_config_matches(&needle->ssl_config,
3120 &check->ssl_config)) {
3122 "Connection #%ld has different SSL parameters, "
3124 check->connection_id));
3127 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3129 "Connection #%ld has not started SSL connect, "
3131 check->connection_id));
3138 else { /* The requested needle connection is using a proxy,
3139 is the checked one using the same host, port and type? */
3140 if(check->bits.proxy &&
3141 (needle->proxytype == check->proxytype) &&
3142 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3143 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3144 needle->port == check->port) {
3145 /* This is the same proxy connection, use it! */
3151 /* If we are looking for an HTTP+NTLM connection, check if this is
3152 already authenticating with the right credentials. If not, keep
3153 looking so that we can reuse NTLM connections if
3154 possible. (Especially we must not reuse the same connection if
3155 partway through a handshake!) */
3157 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3160 /* We must use this connection, no other */
3161 *force_reuse = TRUE;
3164 else if(credentialsMatch)
3165 /* this is a backup choice */
3171 /* We can pipeline if we want to. Let's continue looking for
3172 the optimal connection to use, i.e the shortest pipe that is not
3176 /* We have the optimal connection. Let's stop looking. */
3181 /* We can't use the connection if the pipe is full */
3182 if(pipeLen >= max_pipe_len)
3185 /* We can't use the connection if the pipe is penalized */
3186 if(Curl_pipeline_penalized(data, check))
3189 if(pipeLen < best_pipe_len) {
3190 /* This connection has a shorter pipe so far. We'll pick this
3191 and continue searching */
3193 best_pipe_len = pipeLen;
3198 /* We have found a connection. Let's stop searching. */
3208 return TRUE; /* yes, we found one to use! */
3211 return FALSE; /* no matching connecting exists */
3214 /* Mark the connection as 'idle', or close it if the cache is full.
3215 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3217 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3219 /* data->multi->maxconnects can be negative, deal with it. */
3220 size_t maxconnects =
3221 (data->multi->maxconnects < 0) ? data->multi->num_easy * 4:
3222 data->multi->maxconnects;
3223 struct connectdata *conn_candidate = NULL;
3225 /* Mark the current connection as 'unused' */
3226 conn->inuse = FALSE;
3228 if(maxconnects > 0 &&
3229 data->state.conn_cache->num_connections > maxconnects) {
3230 infof(data, "Connection cache is full, closing the oldest one.\n");
3232 conn_candidate = find_oldest_idle_connection(data);
3234 if(conn_candidate) {
3235 /* Set the connection's owner correctly */
3236 conn_candidate->data = data;
3238 /* the winner gets the honour of being disconnected */
3239 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3243 return (conn_candidate == conn) ? FALSE : TRUE;
3247 * The given input connection struct pointer is to be stored in the connection
3248 * cache. If the cache is already full, least interesting existing connection
3249 * (if any) gets closed.
3251 * The given connection should be unique. That must've been checked prior to
3254 static CURLcode ConnectionStore(struct SessionHandle *data,
3255 struct connectdata *conn)
3257 return Curl_conncache_add_conn(data->state.conn_cache, conn);
3260 /* after a TCP connection to the proxy has been verified, this function does
3261 the next magic step.
3263 Note: this function's sub-functions call failf()
3266 CURLcode Curl_connected_proxy(struct connectdata *conn,
3269 if(!conn->bits.proxy || sockindex)
3270 /* this magic only works for the primary socket as the secondary is used
3271 for FTP only and it has FTP specific magic in ftp.c */
3274 switch(conn->proxytype) {
3275 #ifndef CURL_DISABLE_PROXY
3276 case CURLPROXY_SOCKS5:
3277 case CURLPROXY_SOCKS5_HOSTNAME:
3278 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3279 conn->host.name, conn->remote_port,
3282 case CURLPROXY_SOCKS4:
3283 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3284 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3286 case CURLPROXY_SOCKS4A:
3287 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3288 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3290 #endif /* CURL_DISABLE_PROXY */
3291 case CURLPROXY_HTTP:
3292 case CURLPROXY_HTTP_1_0:
3293 /* do nothing here. handled later. */
3297 } /* switch proxytype */
3303 * verboseconnect() displays verbose information after a connect
3305 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3306 void Curl_verboseconnect(struct connectdata *conn)
3308 if(conn->data->set.verbose)
3309 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3310 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3311 conn->ip_addr_str, conn->port, conn->connection_id);
3315 int Curl_protocol_getsock(struct connectdata *conn,
3316 curl_socket_t *socks,
3319 if(conn->handler->proto_getsock)
3320 return conn->handler->proto_getsock(conn, socks, numsocks);
3321 return GETSOCK_BLANK;
3324 int Curl_doing_getsock(struct connectdata *conn,
3325 curl_socket_t *socks,
3328 if(conn && conn->handler->doing_getsock)
3329 return conn->handler->doing_getsock(conn, socks, numsocks);
3330 return GETSOCK_BLANK;
3334 * We are doing protocol-specific connecting and this is being called over and
3335 * over from the multi interface until the connection phase is done on
3339 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3342 CURLcode result=CURLE_OK;
3344 if(conn && conn->handler->connecting) {
3346 result = conn->handler->connecting(conn, done);
3355 * We are DOING this is being called over and over from the multi interface
3356 * until the DOING phase is done on protocol layer.
3359 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3361 CURLcode result=CURLE_OK;
3363 if(conn && conn->handler->doing) {
3365 result = conn->handler->doing(conn, done);
3374 * We have discovered that the TCP connection has been successful, we can now
3375 * proceed with some action.
3378 CURLcode Curl_protocol_connect(struct connectdata *conn,
3379 bool *protocol_done)
3381 CURLcode result=CURLE_OK;
3383 *protocol_done = FALSE;
3385 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3386 /* We already are connected, get back. This may happen when the connect
3387 worked fine in the first call, like when we connect to a local server
3388 or proxy. Note that we don't know if the protocol is actually done.
3390 Unless this protocol doesn't have any protocol-connect callback, as
3391 then we know we're done. */
3392 if(!conn->handler->connecting)
3393 *protocol_done = TRUE;
3398 if(!conn->bits.protoconnstart) {
3400 result = Curl_proxy_connect(conn);
3404 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3405 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3406 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3407 before proceeding further. Return CURLE_OK so we'll be called again */
3410 if(conn->handler->connect_it) {
3411 /* is there a protocol-specific connect() procedure? */
3413 /* Call the protocol-specific connect function */
3414 result = conn->handler->connect_it(conn, protocol_done);
3417 *protocol_done = TRUE;
3419 /* it has started, possibly even completed but that knowledge isn't stored
3422 conn->bits.protoconnstart = TRUE;
3425 return result; /* pass back status */
3429 * Helpers for IDNA convertions.
3431 static bool is_ASCII_name(const char *hostname)
3433 const unsigned char *ch = (const unsigned char*)hostname;
3444 * Check if characters in hostname is allowed in Top Level Domain.
3446 static bool tld_check_name(struct SessionHandle *data,
3447 const char *ace_hostname)
3450 char *uc_name = NULL;
3452 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3453 const char *tld_errmsg = "<no msg>";
3458 /* Convert (and downcase) ACE-name back into locale's character set */
3459 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3460 if(rc != IDNA_SUCCESS)
3463 rc = tld_check_lz(uc_name, &err_pos, NULL);
3464 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3465 #ifdef HAVE_TLD_STRERROR
3466 if(rc != TLD_SUCCESS)
3467 tld_errmsg = tld_strerror((Tld_rc)rc);
3469 if(rc == TLD_INVALID)
3470 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3471 tld_errmsg, err_pos, uc_name[err_pos],
3472 uc_name[err_pos] & 255);
3473 else if(rc != TLD_SUCCESS)
3474 infof(data, "WARNING: TLD check for %s failed; %s\n",
3475 uc_name, tld_errmsg);
3476 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3479 if(rc != TLD_SUCCESS)
3487 * Perform any necessary IDN conversion of hostname
3489 static void fix_hostname(struct SessionHandle *data,
3490 struct connectdata *conn, struct hostname *host)
3497 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3501 /* set the name we use to display the host name */
3502 host->dispname = host->name;
3504 len = strlen(host->name);
3505 if(host->name[len-1] == '.')
3506 /* strip off a single trailing dot if present, primarily for SNI but
3507 there's no use for it */
3508 host->name[len-1]=0;
3510 if(!is_ASCII_name(host->name)) {
3512 /*************************************************************
3513 * Check name for non-ASCII and convert hostname to ACE form.
3514 *************************************************************/
3515 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3516 char *ace_hostname = NULL;
3517 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3518 infof (data, "Input domain encoded as `%s'\n",
3519 stringprep_locale_charset ());
3520 if(rc != IDNA_SUCCESS)
3521 infof(data, "Failed to convert %s to ACE; %s\n",
3522 host->name, Curl_idn_strerror(conn,rc));
3524 /* tld_check_name() displays a warning if the host name contains
3525 "illegal" characters for this TLD */
3526 (void)tld_check_name(data, ace_hostname);
3528 host->encalloc = ace_hostname;
3529 /* change the name pointer to point to the encoded hostname */
3530 host->name = host->encalloc;
3533 #elif defined(USE_WIN32_IDN)
3534 /*************************************************************
3535 * Check name for non-ASCII and convert hostname to ACE form.
3536 *************************************************************/
3537 char *ace_hostname = NULL;
3538 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3540 infof(data, "Failed to convert %s to ACE;\n",
3543 host->encalloc = ace_hostname;
3544 /* change the name pointer to point to the encoded hostname */
3545 host->name = host->encalloc;
3548 infof(data, "IDN support not present, can't parse Unicode domains\n");
3553 static void llist_dtor(void *user, void *element)
3561 * Allocate and initialize a new connectdata object.
3563 static struct connectdata *allocate_conn(struct SessionHandle *data)
3565 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3569 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3570 already from start to avoid NULL
3571 situations and checks */
3573 /* and we setup a few fields in case we end up actually using this struct */
3575 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3576 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3577 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3578 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3579 conn->connection_id = -1; /* no ID */
3580 conn->port = -1; /* unknown at this point */
3581 conn->remote_port = -1; /* unknown */
3583 /* Default protocol-independent behavior doesn't support persistent
3584 connections, so we set this to force-close. Protocols that support
3585 this need to set this to FALSE in their "curl_do" functions. */
3586 connclose(conn, "Default to force-close");
3588 /* Store creation time to help future close decision making */
3589 conn->created = Curl_tvnow();
3591 conn->data = data; /* Setup the association between this connection
3592 and the SessionHandle */
3594 conn->proxytype = data->set.proxytype; /* type */
3596 #ifdef CURL_DISABLE_PROXY
3598 conn->bits.proxy = FALSE;
3599 conn->bits.httpproxy = FALSE;
3600 conn->bits.proxy_user_passwd = FALSE;
3601 conn->bits.tunnel_proxy = FALSE;
3603 #else /* CURL_DISABLE_PROXY */
3605 /* note that these two proxy bits are now just on what looks to be
3606 requested, they may be altered down the road */
3607 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3608 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3609 conn->bits.httpproxy = (conn->bits.proxy &&
3610 (conn->proxytype == CURLPROXY_HTTP ||
3611 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3612 conn->bits.proxy_user_passwd =
3613 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3614 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3616 #endif /* CURL_DISABLE_PROXY */
3618 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3619 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3620 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3622 conn->verifypeer = data->set.ssl.verifypeer;
3623 conn->verifyhost = data->set.ssl.verifyhost;
3625 conn->ip_version = data->set.ipver;
3627 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3628 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3629 conn->ntlm_auth_hlpr_pid = 0;
3630 conn->challenge_header = NULL;
3631 conn->response_header = NULL;
3634 if(Curl_multi_pipeline_enabled(data->multi) &&
3635 !conn->master_buffer) {
3636 /* Allocate master_buffer to be used for pipelining */
3637 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3638 if(!conn->master_buffer)
3642 /* Initialize the pipeline lists */
3643 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3644 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3645 if(!conn->send_pipe || !conn->recv_pipe)
3649 conn->data_prot = PROT_CLEAR;
3652 /* Store the local bind parameters that will be used for this connection */
3653 if(data->set.str[STRING_DEVICE]) {
3654 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3658 conn->localportrange = data->set.localportrange;
3659 conn->localport = data->set.localport;
3661 /* the close socket stuff needs to be copied to the connection struct as
3662 it may live on without (this specific) SessionHandle */
3663 conn->fclosesocket = data->set.fclosesocket;
3664 conn->closesocket_client = data->set.closesocket_client;
3669 Curl_llist_destroy(conn->send_pipe, NULL);
3670 Curl_llist_destroy(conn->recv_pipe, NULL);
3672 conn->send_pipe = NULL;
3673 conn->recv_pipe = NULL;
3675 Curl_safefree(conn->master_buffer);
3676 Curl_safefree(conn->localdev);
3677 Curl_safefree(conn);
3681 static CURLcode findprotocol(struct SessionHandle *data,
3682 struct connectdata *conn,
3683 const char *protostr)
3685 const struct Curl_handler * const *pp;
3686 const struct Curl_handler *p;
3688 /* Scan protocol handler table and match against 'protostr' to set a few
3689 variables based on the URL. Now that the handler may be changed later
3690 when the protocol specific setup function is called. */
3691 for(pp = protocols; (p = *pp) != NULL; pp++) {
3692 if(Curl_raw_equal(p->scheme, protostr)) {
3693 /* Protocol found in table. Check if allowed */
3694 if(!(data->set.allowed_protocols & p->protocol))
3698 /* it is allowed for "normal" request, now do an extra check if this is
3699 the result of a redirect */
3700 if(data->state.this_is_a_follow &&
3701 !(data->set.redir_protocols & p->protocol))
3705 /* Perform setup complement if some. */
3706 conn->handler = conn->given = p;
3708 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3714 /* The protocol was not found in the table, but we don't have to assign it
3715 to anything since it is already assigned to a dummy-struct in the
3716 create_conn() function when the connectdata struct is allocated. */
3717 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3720 return CURLE_UNSUPPORTED_PROTOCOL;
3724 * Parse URL and fill in the relevant members of the connection struct.
3726 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3727 struct connectdata *conn,
3729 char **userp, char **passwdp,
3734 char *path = data->state.path;
3737 char protobuf[16] = "";
3738 const char *protop = "";
3740 bool rebuild_url = FALSE;
3742 *prot_missing = FALSE;
3744 /*************************************************************
3747 * We need to parse the url even when using the proxy, because we will need
3748 * the hostname and port in case we are trying to SSL connect through the
3749 * proxy -- and we don't know if we will need to use SSL until we parse the
3751 ************************************************************/
3752 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3754 Curl_raw_equal(protobuf, "file")) {
3755 if(path[0] == '/' && path[1] == '/') {
3756 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3757 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3758 * file://localhost/<path> is similar to how other schemes treat missing
3759 * hostnames. See RFC 1808. */
3761 /* This cannot be done with strcpy() in a portable manner, since the
3762 memory areas overlap! */
3763 memmove(path, path + 2, strlen(path + 2)+1);
3766 * we deal with file://<host>/<path> differently since it supports no
3767 * hostname other than "localhost" and "127.0.0.1", which is unique among
3768 * the URL protocols specified in RFC 1738
3770 if(path[0] != '/') {
3771 /* the URL included a host name, we ignore host names in file:// URLs
3772 as the standards don't define what to do with them */
3773 char *ptr=strchr(path, '/');
3775 /* there was a slash present
3777 RFC1738 (section 3.1, page 5) says:
3779 The rest of the locator consists of data specific to the scheme,
3780 and is known as the "url-path". It supplies the details of how the
3781 specified resource can be accessed. Note that the "/" between the
3782 host (or port) and the url-path is NOT part of the url-path.
3784 As most agents use file://localhost/foo to get '/foo' although the
3785 slash preceding foo is a separator and not a slash for the path,
3786 a URL as file://localhost//foo must be valid as well, to refer to
3787 the same file with an absolute path.
3790 if(ptr[1] && ('/' == ptr[1]))
3791 /* if there was two slashes, we skip the first one as that is then
3792 used truly as a separator */
3795 /* This cannot be made with strcpy, as the memory chunks overlap! */
3796 memmove(path, ptr, strlen(ptr)+1);
3800 protop = "file"; /* protocol string */
3806 if(2 > sscanf(data->change.url,
3807 "%15[^\n:]://%[^\n/?]%[^\n]",
3809 conn->host.name, path)) {
3812 * The URL was badly formatted, let's try the browser-style _without_
3813 * protocol specified like 'http://'.
3815 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3818 * We couldn't even get this format.
3819 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3820 * assigned, but the return value is EOF!
3822 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3823 if(!(rc == -1 && *conn->host.name))
3826 failf(data, "<url> malformed");
3827 return CURLE_URL_MALFORMAT;
3832 * Since there was no protocol part specified, we guess what protocol it
3833 * is based on the first letters of the server name.
3836 /* Note: if you add a new protocol, please update the list in
3837 * lib/version.c too! */
3839 if(checkprefix("FTP.", conn->host.name))
3841 else if(checkprefix("DICT.", conn->host.name))
3843 else if(checkprefix("LDAP.", conn->host.name))
3845 else if(checkprefix("IMAP.", conn->host.name))
3847 else if(checkprefix("SMTP.", conn->host.name))
3849 else if(checkprefix("POP3.", conn->host.name))
3855 *prot_missing = TRUE; /* not given in URL */
3861 /* We search for '?' in the host name (but only on the right side of a
3862 * @-letter to allow ?-letters in username and password) to handle things
3863 * like http://example.com?param= (notice the missing '/').
3865 at = strchr(conn->host.name, '@');
3867 query = strchr(at+1, '?');
3869 query = strchr(conn->host.name, '?');
3872 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3873 a slash after the '?', that is where the path currently begins and the
3874 '?string' is still part of the host name.
3876 We must move the trailing part from the host name and put it first in
3877 the path. And have it all prefixed with a slash.
3880 size_t hostlen = strlen(query);
3881 size_t pathlen = strlen(path);
3883 /* move the existing path plus the zero byte forward, to make room for
3884 the host-name part */
3885 memmove(path+hostlen+1, path, pathlen+1);
3887 /* now copy the trailing host part in front of the existing path */
3888 memcpy(path+1, query, hostlen);
3890 path[0]='/'; /* prepend the missing slash */
3893 *query=0; /* now cut off the hostname at the ? */
3896 /* if there's no path set, use a single slash */
3901 /* If the URL is malformatted (missing a '/' after hostname before path) we
3902 * insert a slash here. The only letter except '/' we accept to start a path
3905 if(path[0] == '?') {
3906 /* We need this function to deal with overlapping memory areas. We know
3907 that the memory area 'path' points to is 'urllen' bytes big and that
3908 is bigger than the path. Use +1 to move the zero byte too. */
3909 memmove(&path[1], path, strlen(path)+1);
3914 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3915 char *newp = Curl_dedotdotify(path);
3917 return CURLE_OUT_OF_MEMORY;
3919 if(strcmp(newp, path)) {
3921 free(data->state.pathbuffer);
3922 data->state.pathbuffer = newp;
3923 data->state.path = newp;
3931 * "rebuild_url" means that one or more URL components have been modified so
3932 * we need to generate an updated full version. We need the corrected URL
3933 * when communicating over HTTP proxy and we don't know at this point if
3934 * we're using a proxy or not.
3939 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3941 size_t urllen = strlen(data->change.url); /* original URL length */
3943 size_t prefixlen = strlen(conn->host.name);
3946 prefixlen += strlen(protop) + strlen("://");
3948 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3950 return CURLE_OUT_OF_MEMORY;
3952 /* copy the prefix */
3953 memcpy(reurl, data->change.url, prefixlen);
3955 /* append the trailing piece + zerobyte */
3956 memcpy(&reurl[prefixlen], path, plen + 1);
3958 /* possible free the old one */
3959 if(data->change.url_alloc) {
3960 Curl_safefree(data->change.url);
3961 data->change.url_alloc = FALSE;
3964 infof(data, "Rebuilt URL to: %s\n", reurl);
3966 data->change.url = reurl;
3967 data->change.url_alloc = TRUE; /* free this later */
3971 * Parse the login details from the URL and strip them out of
3974 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3975 if(result != CURLE_OK)
3978 if(conn->host.name[0] == '[') {
3979 /* This looks like an IPv6 address literal. See if there is an address
3980 scope if there is no location header */
3981 char *percent = strchr(conn->host.name, '%');
3983 unsigned int identifier_offset = 3;
3985 unsigned long scope;
3986 if(strncmp("%25", percent, 3) != 0) {
3988 "Please URL encode %% as %%25, see RFC 6874.\n");
3989 identifier_offset = 1;
3991 scope = strtoul(percent + identifier_offset, &endp, 10);
3993 /* The address scope was well formed. Knock it out of the
3995 memmove(percent, endp, strlen(endp)+1);
3996 conn->scope = (unsigned int)scope;
3999 /* Zone identifier is not numeric */
4000 #if defined(HAVE_NET_IF_H) && defined(IFNAMSIZ) && defined(HAVE_IF_NAMETOINDEX)
4001 char ifname[IFNAMSIZ + 2];
4002 char *square_bracket;
4003 unsigned int scopeidx = 0;
4004 strncpy(ifname, percent + identifier_offset, IFNAMSIZ + 2);
4005 /* Ensure nullbyte termination */
4006 ifname[IFNAMSIZ + 1] = '\0';
4007 square_bracket = strchr(ifname, ']');
4008 if(square_bracket) {
4010 *square_bracket = '\0';
4011 scopeidx = if_nametoindex(ifname);
4013 infof(data, "Invalid network interface: %s; %s\n", ifname,
4018 /* Remove zone identifier from hostname */
4020 percent + identifier_offset + strlen(ifname),
4021 identifier_offset + strlen(ifname));
4022 conn->scope = scopeidx;
4025 #endif /* HAVE_NET_IF_H && IFNAMSIZ */
4026 infof(data, "Invalid IPv6 address format\n");
4032 /* Override any scope that was set above. */
4033 conn->scope = data->set.scope;
4035 /* Remove the fragment part of the path. Per RFC 2396, this is always the
4036 last part of the URI. We are looking for the first '#' so that we deal
4037 gracefully with non conformant URI such as http://example.com#foo#bar. */
4038 fragment = strchr(path, '#');
4042 /* we know the path part ended with a fragment, so we know the full URL
4043 string does too and we need to cut it off from there so it isn't used
4045 fragment = strchr(data->change.url, '#');
4051 * So if the URL was A://B/C#D,
4053 * conn->host.name is B
4054 * data->state.path is /C
4057 return findprotocol(data, conn, protop);
4061 * If we're doing a resumed transfer, we need to setup our stuff
4064 static CURLcode setup_range(struct SessionHandle *data)
4066 struct UrlState *s = &data->state;
4067 s->resume_from = data->set.set_resume_from;
4068 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4069 if(s->rangestringalloc)
4073 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4075 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4077 s->rangestringalloc = (s->range)?TRUE:FALSE;
4080 return CURLE_OUT_OF_MEMORY;
4082 /* tell ourselves to fetch this range */
4083 s->use_range = TRUE; /* enable range download */
4086 s->use_range = FALSE; /* disable range download */
4093 * setup_connection_internals() -
4095 * Setup connection internals specific to the requested protocol in the
4096 * SessionHandle. This is inited and setup before the connection is made but
4097 * is about the particular protocol that is to be used.
4099 * This MUST get called after proxy magic has been figured out.
4101 static CURLcode setup_connection_internals(struct connectdata *conn)
4103 const struct Curl_handler * p;
4105 struct SessionHandle *data = conn->data;
4107 /* in some case in the multi state-machine, we go back to the CONNECT state
4108 and then a second (or third or...) call to this function will be made
4109 without doing a DISCONNECT or DONE in between (since the connection is
4110 yet in place) and therefore this function needs to first make sure
4111 there's no lingering previous data allocated. */
4112 Curl_free_request_state(data);
4114 memset(&data->req, 0, sizeof(struct SingleRequest));
4115 data->req.maxdownload = -1;
4117 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4119 /* Perform setup complement if some. */
4122 if(p->setup_connection) {
4123 result = (*p->setup_connection)(conn);
4125 if(result != CURLE_OK)
4128 p = conn->handler; /* May have changed. */
4132 /* we check for -1 here since if proxy was detected already, this
4133 was very likely already set to the proxy port */
4134 conn->port = p->defport;
4136 /* only if remote_port was not already parsed off the URL we use the
4137 default port number */
4138 if(conn->remote_port < 0)
4139 conn->remote_port = (unsigned short)conn->given->defport;
4145 * Curl_free_request_state() should free temp data that was allocated in the
4146 * SessionHandle for this single request.
4149 void Curl_free_request_state(struct SessionHandle *data)
4151 Curl_safefree(data->req.protop);
4155 #ifndef CURL_DISABLE_PROXY
4156 /****************************************************************
4157 * Checks if the host is in the noproxy list. returns true if it matches
4158 * and therefore the proxy should NOT be used.
4159 ****************************************************************/
4160 static bool check_noproxy(const char* name, const char* no_proxy)
4162 /* no_proxy=domain1.dom,host.domain2.dom
4163 * (a comma-separated list of hosts which should
4164 * not be proxied, or an asterisk to override
4165 * all proxy variables)
4169 const char* separator = ", ";
4170 size_t no_proxy_len;
4174 if(no_proxy && no_proxy[0]) {
4175 if(Curl_raw_equal("*", no_proxy)) {
4179 /* NO_PROXY was specified and it wasn't just an asterisk */
4181 no_proxy_len = strlen(no_proxy);
4182 endptr = strchr(name, ':');
4184 namelen = endptr - name;
4186 namelen = strlen(name);
4188 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4189 while(tok_start < no_proxy_len &&
4190 strchr(separator, no_proxy[tok_start]) != NULL) {
4191 /* Look for the beginning of the token. */
4195 if(tok_start == no_proxy_len)
4196 break; /* It was all trailing separator chars, no more tokens. */
4198 for(tok_end = tok_start; tok_end < no_proxy_len &&
4199 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4200 /* Look for the end of the token. */
4203 /* To match previous behaviour, where it was necessary to specify
4204 * ".local.com" to prevent matching "notlocal.com", we will leave
4207 if(no_proxy[tok_start] == '.')
4210 if((tok_end - tok_start) <= namelen) {
4211 /* Match the last part of the name to the domain we are checking. */
4212 const char *checkn = name + namelen - (tok_end - tok_start);
4213 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4214 tok_end - tok_start)) {
4215 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4216 /* We either have an exact match, or the previous character is a .
4217 * so it is within the same domain, so no proxy for this host.
4222 } /* if((tok_end - tok_start) <= namelen) */
4223 } /* for(tok_start = 0; tok_start < no_proxy_len;
4224 tok_start = tok_end + 1) */
4225 } /* NO_PROXY was specified and it wasn't just an asterisk */
4230 /****************************************************************
4231 * Detect what (if any) proxy to use. Remember that this selects a host
4232 * name and is not limited to HTTP proxies only.
4233 * The returned pointer must be freed by the caller (unless NULL)
4234 ****************************************************************/
4235 static char *detect_proxy(struct connectdata *conn)
4239 #ifndef CURL_DISABLE_HTTP
4240 /* If proxy was not specified, we check for default proxy environment
4241 * variables, to enable i.e Lynx compliance:
4243 * http_proxy=http://some.server.dom:port/
4244 * https_proxy=http://some.server.dom:port/
4245 * ftp_proxy=http://some.server.dom:port/
4246 * no_proxy=domain1.dom,host.domain2.dom
4247 * (a comma-separated list of hosts which should
4248 * not be proxied, or an asterisk to override
4249 * all proxy variables)
4250 * all_proxy=http://some.server.dom:port/
4251 * (seems to exist for the CERN www lib. Probably
4252 * the first to check for.)
4254 * For compatibility, the all-uppercase versions of these variables are
4255 * checked if the lowercase versions don't exist.
4257 char *no_proxy=NULL;
4258 char proxy_env[128];
4260 no_proxy=curl_getenv("no_proxy");
4262 no_proxy=curl_getenv("NO_PROXY");
4264 if(!check_noproxy(conn->host.name, no_proxy)) {
4265 /* It was not listed as without proxy */
4266 const char *protop = conn->handler->scheme;
4267 char *envp = proxy_env;
4270 /* Now, build <protocol>_proxy and check for such a one to use */
4272 *envp++ = (char)tolower((int)*protop++);
4275 strcpy(envp, "_proxy");
4277 /* read the protocol proxy: */
4278 prox=curl_getenv(proxy_env);
4281 * We don't try the uppercase version of HTTP_PROXY because of
4284 * When curl is used in a webserver application
4285 * environment (cgi or php), this environment variable can
4286 * be controlled by the web server user by setting the
4287 * http header 'Proxy:' to some value.
4289 * This can cause 'internal' http/ftp requests to be
4290 * arbitrarily redirected by any external attacker.
4292 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4293 /* There was no lowercase variable, try the uppercase version: */
4294 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4295 prox=curl_getenv(proxy_env);
4298 if(prox && *prox) { /* don't count "" strings */
4299 proxy = prox; /* use this */
4302 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4304 proxy=curl_getenv("ALL_PROXY");
4306 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4311 #else /* !CURL_DISABLE_HTTP */
4314 #endif /* CURL_DISABLE_HTTP */
4320 * If this is supposed to use a proxy, we need to figure out the proxy
4321 * host name, so that we can re-use an existing connection
4322 * that may exist registered to the same proxy host.
4323 * proxy will be freed before this function returns.
4325 static CURLcode parse_proxy(struct SessionHandle *data,
4326 struct connectdata *conn, char *proxy)
4331 /* We use 'proxyptr' to point to the proxy name from now on... */
4336 /* We do the proxy host string parsing here. We want the host name and the
4337 * port name. Accept a protocol:// prefix
4340 /* Parse the protocol part if present */
4341 endofprot = strstr(proxy, "://");
4343 proxyptr = endofprot+3;
4344 if(checkprefix("socks5h", proxy))
4345 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4346 else if(checkprefix("socks5", proxy))
4347 conn->proxytype = CURLPROXY_SOCKS5;
4348 else if(checkprefix("socks4a", proxy))
4349 conn->proxytype = CURLPROXY_SOCKS4A;
4350 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4351 conn->proxytype = CURLPROXY_SOCKS4;
4352 /* Any other xxx:// : change to http proxy */
4355 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4357 /* Is there a username and password given in this proxy url? */
4358 atsign = strchr(proxyptr, '@');
4360 CURLcode res = CURLE_OK;
4361 char *proxyuser = NULL;
4362 char *proxypasswd = NULL;
4364 res = parse_login_details(proxyptr, atsign - proxyptr,
4365 &proxyuser, &proxypasswd, NULL);
4367 /* found user and password, rip them out. note that we are
4368 unescaping them, as there is otherwise no way to have a
4369 username or password with reserved characters like ':' in
4371 Curl_safefree(conn->proxyuser);
4372 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4373 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4375 conn->proxyuser = strdup("");
4377 if(!conn->proxyuser)
4378 res = CURLE_OUT_OF_MEMORY;
4380 Curl_safefree(conn->proxypasswd);
4381 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4382 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4384 conn->proxypasswd = strdup("");
4386 if(!conn->proxypasswd)
4387 res = CURLE_OUT_OF_MEMORY;
4391 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4392 atsign++; /* the right side of the @-letter */
4395 proxyptr = atsign; /* now use this instead */
4397 res = CURLE_OUT_OF_MEMORY;
4401 Curl_safefree(proxyuser);
4402 Curl_safefree(proxypasswd);
4408 /* start scanning for port number at this point */
4411 /* detect and extract RFC6874-style IPv6-addresses */
4412 if(*proxyptr == '[') {
4413 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4414 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
4417 /* There might be a zone identifier */
4418 if(strncmp("%25", ptr, 3))
4419 infof(data, "Please URL encode %% as %%25, see RFC 6874.\n");
4421 /* Allow unresered characters as defined in RFC 3986 */
4422 while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') ||
4423 (*ptr == '.') || (*ptr == '_') || (*ptr == '~')))
4427 /* yeps, it ended nicely with a bracket as well */
4430 infof(data, "Invalid IPv6 address format\n");
4432 /* Note that if this didn't end with a bracket, we still advanced the
4433 * proxyptr first, but I can't see anything wrong with that as no host
4434 * name nor a numeric can legally start with a bracket.
4438 /* Get port number off proxy.server.com:1080 */
4439 prox_portno = strchr(portptr, ':');
4441 *prox_portno = 0x0; /* cut off number from host name */
4443 /* now set the local port number */
4444 conn->port = strtol(prox_portno, NULL, 10);
4447 if(proxyptr[0]=='/')
4448 /* If the first character in the proxy string is a slash, fail
4449 immediately. The following code will otherwise clear the string which
4450 will lead to code running as if no proxy was set! */
4451 return CURLE_COULDNT_RESOLVE_PROXY;
4453 /* without a port number after the host name, some people seem to use
4454 a slash so we strip everything from the first slash */
4455 atsign = strchr(proxyptr, '/');
4457 *atsign = 0x0; /* cut off path part from host name */
4459 if(data->set.proxyport)
4460 /* None given in the proxy string, then get the default one if it is
4462 conn->port = data->set.proxyport;
4465 /* now, clone the cleaned proxy host name */
4466 conn->proxy.rawalloc = strdup(proxyptr);
4467 conn->proxy.name = conn->proxy.rawalloc;
4469 if(!conn->proxy.rawalloc)
4470 return CURLE_OUT_OF_MEMORY;
4476 * Extract the user and password from the authentication string
4478 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4479 struct connectdata *conn)
4481 char proxyuser[MAX_CURL_USER_LENGTH]="";
4482 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4484 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4485 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4486 MAX_CURL_USER_LENGTH);
4487 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4489 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4490 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4491 MAX_CURL_PASSWORD_LENGTH);
4492 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4495 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4496 if(!conn->proxyuser)
4497 return CURLE_OUT_OF_MEMORY;
4499 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4500 if(!conn->proxypasswd)
4501 return CURLE_OUT_OF_MEMORY;
4505 #endif /* CURL_DISABLE_PROXY */
4510 * Parse the login details (user name, password and options) from the URL and
4511 * strip them out of the host name
4513 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4516 * Outputs: (almost :- all currently undefined)
4517 * conn->bits.user_passwd - non-zero if non-default passwords exist
4518 * user - non-zero length if defined
4519 * passwd - non-zero length if defined
4520 * options - non-zero length if defined
4521 * conn->host.name - remove user name and password
4523 static CURLcode parse_url_login(struct SessionHandle *data,
4524 struct connectdata *conn,
4525 char **user, char **passwd, char **options)
4527 CURLcode result = CURLE_OK;
4529 char *passwdp = NULL;
4530 char *optionsp = NULL;
4532 /* At this point, we're hoping all the other special cases have
4533 * been taken care of, so conn->host.name is at most
4534 * [user[:password][;options]]@]hostname
4536 * We need somewhere to put the embedded details, so do that first.
4539 char *ptr = strchr(conn->host.name, '@');
4540 char *login = conn->host.name;
4542 DEBUGASSERT(!**user);
4543 DEBUGASSERT(!**passwd);
4544 DEBUGASSERT(!**options);
4549 /* We will now try to extract the
4550 * possible login information in a string like:
4551 * ftp://user:password@ftp.my.site:8021/README */
4552 conn->host.name = ++ptr;
4554 /* So the hostname is sane. Only bother interpreting the
4555 * results if we could care. It could still be wasted
4556 * work because it might be overtaken by the programmatically
4557 * set user/passwd, but doing that first adds more cases here :-(
4560 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4563 /* We could use the login information in the URL so extract it */
4564 result = parse_login_details(login, ptr - login - 1,
4565 &userp, &passwdp, &optionsp);
4566 if(result != CURLE_OK)
4572 /* We have a user in the URL */
4573 conn->bits.userpwd_in_url = TRUE;
4574 conn->bits.user_passwd = TRUE; /* enable user+password */
4576 /* Decode the user */
4577 newname = curl_easy_unescape(data, userp, 0, NULL);
4579 result = CURLE_OUT_OF_MEMORY;
4588 /* We have a password in the URL so decode it */
4589 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4591 result = CURLE_OUT_OF_MEMORY;
4596 *passwd = newpasswd;
4600 /* We have an options list in the URL so decode it */
4601 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4603 result = CURLE_OUT_OF_MEMORY;
4608 *options = newoptions;
4614 Curl_safefree(userp);
4615 Curl_safefree(passwdp);
4616 Curl_safefree(optionsp);
4622 * parse_login_details()
4624 * This is used to parse a login string for user name, password and options in
4625 * the following formats:
4629 * user:password;options
4631 * user;options:password
4639 * login [in] - The login string.
4640 * len [in] - The length of the login string.
4641 * userp [in/out] - The address where a pointer to newly allocated memory
4642 * holding the user will be stored upon completion.
4643 * passdwp [in/out] - The address where a pointer to newly allocated memory
4644 * holding the password will be stored upon completion.
4645 * optionsp [in/out] - The address where a pointer to newly allocated memory
4646 * holding the options will be stored upon completion.
4648 * Returns CURLE_OK on success.
4650 static CURLcode parse_login_details(const char *login, const size_t len,
4651 char **userp, char **passwdp,
4654 CURLcode result = CURLE_OK;
4658 const char *psep = NULL;
4659 const char *osep = NULL;
4664 /* Attempt to find the password separator */
4666 psep = strchr(login, ':');
4668 /* Within the constraint of the login string */
4669 if(psep >= login + len)
4673 /* Attempt to find the options separator */
4675 osep = strchr(login, ';');
4677 /* Within the constraint of the login string */
4678 if(osep >= login + len)
4682 /* Calculate the portion lengths */
4684 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4685 (osep ? (size_t)(osep - login) : len));
4687 (osep && osep > psep ? (size_t)(osep - psep) :
4688 (size_t)(login + len - psep)) - 1 : 0);
4690 (psep && psep > osep ? (size_t)(psep - osep) :
4691 (size_t)(login + len - osep)) - 1 : 0);
4693 /* Allocate the user portion buffer */
4695 ubuf = malloc(ulen + 1);
4697 result = CURLE_OUT_OF_MEMORY;
4700 /* Allocate the password portion buffer */
4701 if(!result && passwdp && plen) {
4702 pbuf = malloc(plen + 1);
4704 Curl_safefree(ubuf);
4705 result = CURLE_OUT_OF_MEMORY;
4709 /* Allocate the options portion buffer */
4710 if(!result && optionsp && olen) {
4711 obuf = malloc(olen + 1);
4713 Curl_safefree(pbuf);
4714 Curl_safefree(ubuf);
4715 result = CURLE_OUT_OF_MEMORY;
4720 /* Store the user portion if necessary */
4722 memcpy(ubuf, login, ulen);
4724 Curl_safefree(*userp);
4728 /* Store the password portion if necessary */
4730 memcpy(pbuf, psep + 1, plen);
4732 Curl_safefree(*passwdp);
4736 /* Store the options portion if necessary */
4738 memcpy(obuf, osep + 1, olen);
4740 Curl_safefree(*optionsp);
4748 /*************************************************************
4749 * Figure out the remote port number and fix it in the URL
4751 * No matter if we use a proxy or not, we have to figure out the remote
4752 * port number of various reasons.
4754 * To be able to detect port number flawlessly, we must not confuse them
4755 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4757 * The conn->host.name is currently [user:passwd@]host[:port] where host
4758 * could be a hostname, IPv4 address or IPv6 address.
4760 * The port number embedded in the URL is replaced, if necessary.
4761 *************************************************************/
4762 static CURLcode parse_remote_port(struct SessionHandle *data,
4763 struct connectdata *conn)
4768 /* Note that at this point, the IPv6 address cannot contain any scope
4769 suffix as that has already been removed in the parseurlandfillconn()
4771 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4773 (']' == endbracket)) {
4774 /* this is a RFC2732-style specified IP-address */
4775 conn->bits.ipv6_ip = TRUE;
4777 conn->host.name++; /* skip over the starting bracket */
4778 portptr = strchr(conn->host.name, ']');
4780 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4782 portptr = NULL; /* no port number available */
4787 struct in6_addr in6;
4788 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4789 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4791 failf(data, "IPv6 numerical address used in URL without brackets");
4792 return CURLE_URL_MALFORMAT;
4796 portptr = strrchr(conn->host.name, ':');
4799 if(data->set.use_port && data->state.allow_port) {
4800 /* if set, we use this and ignore the port possibly given in the URL */
4801 conn->remote_port = (unsigned short)data->set.use_port;
4803 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4804 number - since the port number is to be ignored! */
4805 if(conn->bits.httpproxy) {
4806 /* we need to create new URL with the new port number */
4810 if(conn->bits.type_set)
4811 snprintf(type, sizeof(type), ";type=%c",
4812 data->set.prefer_ascii?'A':
4813 (data->set.ftp_list_only?'D':'I'));
4816 * This synthesized URL isn't always right--suffixes like ;type=A are
4817 * stripped off. It would be better to work directly from the original
4818 * URL and simply replace the port part of it.
4820 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4821 conn->bits.ipv6_ip?"[":"", conn->host.name,
4822 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4823 data->state.slash_removed?"/":"", data->state.path,
4826 return CURLE_OUT_OF_MEMORY;
4828 if(data->change.url_alloc) {
4829 Curl_safefree(data->change.url);
4830 data->change.url_alloc = FALSE;
4833 data->change.url = url;
4834 data->change.url_alloc = TRUE;
4838 /* no CURLOPT_PORT given, extract the one from the URL */
4843 port=strtol(portptr+1, &rest, 10); /* Port number must be decimal */
4845 if((port < 0) || (port > 0xffff)) {
4846 /* Single unix standard says port numbers are 16 bits long */
4847 failf(data, "Port number out of range");
4848 return CURLE_URL_MALFORMAT;
4851 else if(rest != &portptr[1]) {
4852 *portptr = '\0'; /* cut off the name there */
4853 conn->remote_port = curlx_ultous(port);
4856 /* Browser behavior adaptation. If there's a colon with no digits after,
4857 just cut off the name there which makes us ignore the colon and just
4858 use the default port. Firefox and Chrome both do that. */
4865 * Override the login details from the URL with that in the CURLOPT_USERPWD
4866 * option or a .netrc file, if applicable.
4868 static CURLcode override_login(struct SessionHandle *data,
4869 struct connectdata *conn,
4870 char **userp, char **passwdp, char **optionsp)
4872 if(data->set.str[STRING_USERNAME]) {
4874 *userp = strdup(data->set.str[STRING_USERNAME]);
4876 return CURLE_OUT_OF_MEMORY;
4879 if(data->set.str[STRING_PASSWORD]) {
4881 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4883 return CURLE_OUT_OF_MEMORY;
4886 if(data->set.str[STRING_OPTIONS]) {
4888 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4890 return CURLE_OUT_OF_MEMORY;
4893 conn->bits.netrc = FALSE;
4894 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4895 int ret = Curl_parsenetrc(conn->host.name,
4897 data->set.str[STRING_NETRC_FILE]);
4899 infof(data, "Couldn't find host %s in the "
4900 DOT_CHAR "netrc file; using defaults\n",
4904 return CURLE_OUT_OF_MEMORY;
4907 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4908 file, so that it is safe to use even if we followed a Location: to a
4909 different host or similar. */
4910 conn->bits.netrc = TRUE;
4912 conn->bits.user_passwd = TRUE; /* enable user+password */
4920 * Set the login details so they're available in the connection
4922 static CURLcode set_login(struct connectdata *conn,
4923 const char *user, const char *passwd,
4924 const char *options)
4926 CURLcode result = CURLE_OK;
4928 /* If our protocol needs a password and we have none, use the defaults */
4929 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4930 /* Store the default user */
4931 conn->user = strdup(CURL_DEFAULT_USER);
4933 /* Store the default password */
4935 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4937 conn->passwd = NULL;
4939 /* This is the default password, so DON'T set conn->bits.user_passwd */
4942 /* Store the user, zero-length if not set */
4943 conn->user = strdup(user);
4945 /* Store the password (only if user is present), zero-length if not set */
4947 conn->passwd = strdup(passwd);
4949 conn->passwd = NULL;
4952 if(!conn->user || !conn->passwd)
4953 result = CURLE_OUT_OF_MEMORY;
4955 /* Store the options, null if not set */
4956 if(!result && options[0]) {
4957 conn->options = strdup(options);
4960 result = CURLE_OUT_OF_MEMORY;
4966 /*************************************************************
4967 * Resolve the address of the server or proxy
4968 *************************************************************/
4969 static CURLcode resolve_server(struct SessionHandle *data,
4970 struct connectdata *conn,
4973 CURLcode result=CURLE_OK;
4974 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4976 /*************************************************************
4977 * Resolve the name of the server or proxy
4978 *************************************************************/
4979 if(conn->bits.reuse)
4980 /* We're reusing the connection - no need to resolve anything, and
4981 fix_hostname() was called already in create_conn() for the re-use
4986 /* this is a fresh connect */
4988 struct Curl_dns_entry *hostaddr;
4990 /* set a pointer to the hostname we display */
4991 fix_hostname(data, conn, &conn->host);
4993 if(!conn->proxy.name || !*conn->proxy.name) {
4994 /* If not connecting via a proxy, extract the port from the URL, if it is
4995 * there, thus overriding any defaults that might have been set above. */
4996 conn->port = conn->remote_port; /* it is the same port */
4998 /* Resolve target host right on */
4999 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
5000 &hostaddr, timeout_ms);
5001 if(rc == CURLRESOLV_PENDING)
5004 else if(rc == CURLRESOLV_TIMEDOUT)
5005 result = CURLE_OPERATION_TIMEDOUT;
5007 else if(!hostaddr) {
5008 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
5009 result = CURLE_COULDNT_RESOLVE_HOST;
5010 /* don't return yet, we need to clean up the timeout first */
5014 /* This is a proxy that hasn't been resolved yet. */
5016 /* IDN-fix the proxy name */
5017 fix_hostname(data, conn, &conn->proxy);
5020 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
5021 &hostaddr, timeout_ms);
5023 if(rc == CURLRESOLV_PENDING)
5026 else if(rc == CURLRESOLV_TIMEDOUT)
5027 result = CURLE_OPERATION_TIMEDOUT;
5029 else if(!hostaddr) {
5030 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
5031 result = CURLE_COULDNT_RESOLVE_PROXY;
5032 /* don't return yet, we need to clean up the timeout first */
5035 DEBUGASSERT(conn->dns_entry == NULL);
5036 conn->dns_entry = hostaddr;
5043 * Cleanup the connection just allocated before we can move along and use the
5044 * previously existing one. All relevant data is copied over and old_conn is
5045 * ready for freeing once this function returns.
5047 static void reuse_conn(struct connectdata *old_conn,
5048 struct connectdata *conn)
5050 if(old_conn->proxy.rawalloc)
5051 free(old_conn->proxy.rawalloc);
5053 /* free the SSL config struct from this connection struct as this was
5054 allocated in vain and is targeted for destruction */
5055 Curl_free_ssl_config(&old_conn->ssl_config);
5057 conn->data = old_conn->data;
5059 /* get the user+password information from the old_conn struct since it may
5060 * be new for this request even when we re-use an existing connection */
5061 conn->bits.user_passwd = old_conn->bits.user_passwd;
5062 if(conn->bits.user_passwd) {
5063 /* use the new user name and password though */
5064 Curl_safefree(conn->user);
5065 Curl_safefree(conn->passwd);
5066 conn->user = old_conn->user;
5067 conn->passwd = old_conn->passwd;
5068 old_conn->user = NULL;
5069 old_conn->passwd = NULL;
5072 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
5073 if(conn->bits.proxy_user_passwd) {
5074 /* use the new proxy user name and proxy password though */
5075 Curl_safefree(conn->proxyuser);
5076 Curl_safefree(conn->proxypasswd);
5077 conn->proxyuser = old_conn->proxyuser;
5078 conn->proxypasswd = old_conn->proxypasswd;
5079 old_conn->proxyuser = NULL;
5080 old_conn->proxypasswd = NULL;
5083 /* host can change, when doing keepalive with a proxy or if the case is
5084 different this time etc */
5085 Curl_safefree(conn->host.rawalloc);
5086 conn->host=old_conn->host;
5088 /* persist connection info in session handle */
5089 Curl_persistconninfo(conn);
5092 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5094 Curl_safefree(old_conn->user);
5095 Curl_safefree(old_conn->passwd);
5096 Curl_safefree(old_conn->proxyuser);
5097 Curl_safefree(old_conn->proxypasswd);
5098 Curl_safefree(old_conn->localdev);
5100 Curl_llist_destroy(old_conn->send_pipe, NULL);
5101 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5103 old_conn->send_pipe = NULL;
5104 old_conn->recv_pipe = NULL;
5106 Curl_safefree(old_conn->master_buffer);
5110 * create_conn() sets up a new connectdata struct, or re-uses an already
5111 * existing one, and resolves host name.
5113 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5114 * response will be coming asynchronously. If *async is FALSE, the name is
5117 * @param data The sessionhandle pointer
5118 * @param in_connect is set to the next connection data pointer
5119 * @param async is set TRUE when an async DNS resolution is pending
5120 * @see Curl_setup_conn()
5122 * *NOTE* this function assigns the conn->data pointer!
5125 static CURLcode create_conn(struct SessionHandle *data,
5126 struct connectdata **in_connect,
5129 CURLcode result = CURLE_OK;
5130 struct connectdata *conn;
5131 struct connectdata *conn_temp = NULL;
5134 char *passwd = NULL;
5135 char *options = NULL;
5138 bool prot_missing = FALSE;
5139 bool no_connections_available = FALSE;
5140 bool force_reuse = FALSE;
5141 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5142 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5146 /*************************************************************
5148 *************************************************************/
5150 if(!data->change.url) {
5151 result = CURLE_URL_MALFORMAT;
5155 /* First, split up the current URL in parts so that we can use the
5156 parts for checking against the already present connections. In order
5157 to not have to modify everything at once, we allocate a temporary
5158 connection data struct and fill in for comparison purposes. */
5159 conn = allocate_conn(data);
5162 result = CURLE_OUT_OF_MEMORY;
5166 /* We must set the return variable as soon as possible, so that our
5167 parent can cleanup any possible allocs we may have done before
5171 /* This initing continues below, see the comment "Continue connectdata
5172 * initialization here" */
5174 /***********************************************************
5175 * We need to allocate memory to store the path in. We get the size of the
5176 * full URL to be sure, and we need to make it at least 256 bytes since
5177 * other parts of the code will rely on this fact
5178 ***********************************************************/
5179 #define LEAST_PATH_ALLOC 256
5180 urllen=strlen(data->change.url);
5181 if(urllen < LEAST_PATH_ALLOC)
5182 urllen=LEAST_PATH_ALLOC;
5185 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5186 * 1 - an extra terminating zero
5187 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5190 Curl_safefree(data->state.pathbuffer);
5191 data->state.path = NULL;
5193 data->state.pathbuffer = malloc(urllen+2);
5194 if(NULL == data->state.pathbuffer) {
5195 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5198 data->state.path = data->state.pathbuffer;
5200 conn->host.rawalloc = malloc(urllen+2);
5201 if(NULL == conn->host.rawalloc) {
5202 Curl_safefree(data->state.pathbuffer);
5203 data->state.path = NULL;
5204 result = CURLE_OUT_OF_MEMORY;
5208 conn->host.name = conn->host.rawalloc;
5209 conn->host.name[0] = 0;
5212 passwd = strdup("");
5213 options = strdup("");
5214 if(!user || !passwd || !options) {
5215 result = CURLE_OUT_OF_MEMORY;
5219 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5221 if(result != CURLE_OK)
5224 /*************************************************************
5225 * No protocol part in URL was used, add it!
5226 *************************************************************/
5228 /* We're guessing prefixes here and if we're told to use a proxy or if
5229 we're gonna follow a Location: later or... then we need the protocol
5230 part added so that we have a valid URL. */
5233 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5236 result = CURLE_OUT_OF_MEMORY;
5240 if(data->change.url_alloc) {
5241 Curl_safefree(data->change.url);
5242 data->change.url_alloc = FALSE;
5245 data->change.url = reurl;
5246 data->change.url_alloc = TRUE; /* free this later */
5249 /*************************************************************
5250 * If the protocol can't handle url query strings, then cut
5251 * off the unhandable part
5252 *************************************************************/
5253 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5254 char *path_q_sep = strchr(conn->data->state.path, '?');
5256 /* according to rfc3986, allow the query (?foo=bar)
5257 also on protocols that can't handle it.
5259 cut the string-part after '?'
5262 /* terminate the string */
5267 if(data->set.str[STRING_BEARER]) {
5268 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5269 if(!conn->xoauth2_bearer) {
5270 result = CURLE_OUT_OF_MEMORY;
5275 #ifndef CURL_DISABLE_PROXY
5276 /*************************************************************
5277 * Extract the user and password from the authentication string
5278 *************************************************************/
5279 if(conn->bits.proxy_user_passwd) {
5280 result = parse_proxy_auth(data, conn);
5281 if(result != CURLE_OK)
5285 /*************************************************************
5286 * Detect what (if any) proxy to use
5287 *************************************************************/
5288 if(data->set.str[STRING_PROXY]) {
5289 proxy = strdup(data->set.str[STRING_PROXY]);
5290 /* if global proxy is set, this is it */
5292 failf(data, "memory shortage");
5293 result = CURLE_OUT_OF_MEMORY;
5298 if(data->set.str[STRING_NOPROXY] &&
5299 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5301 free(proxy); /* proxy is in exception list */
5306 proxy = detect_proxy(conn);
5308 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5309 free(proxy); /* Don't bother with an empty proxy string or if the
5310 protocol doesn't work with network */
5314 /***********************************************************************
5315 * If this is supposed to use a proxy, we need to figure out the proxy host
5316 * name, proxy type and port number, so that we can re-use an existing
5317 * connection that may exist registered to the same proxy host.
5318 ***********************************************************************/
5320 result = parse_proxy(data, conn, proxy);
5322 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5327 if((conn->proxytype == CURLPROXY_HTTP) ||
5328 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5329 #ifdef CURL_DISABLE_HTTP
5330 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5331 result = CURLE_UNSUPPORTED_PROTOCOL;
5334 /* force this connection's protocol to become HTTP if not already
5335 compatible - if it isn't tunneling through */
5336 if(!(conn->handler->protocol & PROTO_FAMILY_HTTP) &&
5337 !conn->bits.tunnel_proxy)
5338 conn->handler = &Curl_handler_http;
5340 conn->bits.httpproxy = TRUE;
5344 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5345 conn->bits.proxy = TRUE;
5348 /* we aren't using the proxy after all... */
5349 conn->bits.proxy = FALSE;
5350 conn->bits.httpproxy = FALSE;
5351 conn->bits.proxy_user_passwd = FALSE;
5352 conn->bits.tunnel_proxy = FALSE;
5355 #endif /* CURL_DISABLE_PROXY */
5357 /*************************************************************
5358 * If the protocol is using SSL and HTTP proxy is used, we set
5359 * the tunnel_proxy bit.
5360 *************************************************************/
5361 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5362 conn->bits.tunnel_proxy = TRUE;
5364 /*************************************************************
5365 * Figure out the remote port number and fix it in the URL
5366 *************************************************************/
5367 result = parse_remote_port(data, conn);
5368 if(result != CURLE_OK)
5371 /* Check for overridden login details and set them accordingly so they
5372 they are known when protocol->setup_connection is called! */
5373 result = override_login(data, conn, &user, &passwd, &options);
5374 if(result != CURLE_OK)
5376 result = set_login(conn, user, passwd, options);
5377 if(result != CURLE_OK)
5380 /*************************************************************
5381 * Setup internals depending on protocol. Needs to be done after
5382 * we figured out what/if proxy to use.
5383 *************************************************************/
5384 result = setup_connection_internals(conn);
5385 if(result != CURLE_OK)
5388 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5389 conn->send[FIRSTSOCKET] = Curl_send_plain;
5390 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5391 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5393 /***********************************************************************
5394 * file: is a special case in that it doesn't need a network connection
5395 ***********************************************************************/
5396 #ifndef CURL_DISABLE_FILE
5397 if(conn->handler->flags & PROTOPT_NONETWORK) {
5399 /* this is supposed to be the connect function so we better at least check
5400 that the file is present here! */
5401 DEBUGASSERT(conn->handler->connect_it);
5402 result = conn->handler->connect_it(conn, &done);
5404 /* Setup a "faked" transfer that'll do nothing */
5405 if(CURLE_OK == result) {
5407 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5409 ConnectionStore(data, conn);
5412 * Setup whatever necessary for a resumed transfer
5414 result = setup_range(data);
5416 DEBUGASSERT(conn->handler->done);
5417 /* we ignore the return code for the protocol-specific DONE */
5418 (void)conn->handler->done(conn, result, FALSE);
5422 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5423 -1, NULL); /* no upload */
5426 /* since we skip do_init() */
5433 /* Get a cloned copy of the SSL config situation stored in the
5434 connection struct. But to get this going nicely, we must first make
5435 sure that the strings in the master copy are pointing to the correct
5436 strings in the session handle strings array!
5438 Keep in mind that the pointers in the master copy are pointing to strings
5439 that will be freed as part of the SessionHandle struct, but all cloned
5440 copies will be separately allocated.
5442 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5443 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5444 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5445 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5446 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5447 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5448 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5450 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5451 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5454 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5455 result = CURLE_OUT_OF_MEMORY;
5459 /*************************************************************
5460 * Check the current list of connections to see if we can
5461 * re-use an already existing one or if we have to create a
5463 *************************************************************/
5465 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5466 we only acknowledge this option if this is not a re-used connection
5467 already (which happens due to follow-location or during a HTTP
5468 authentication phase). */
5469 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5472 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5474 /* If we found a reusable connection, we may still want to
5475 open a new connection if we are pipelining. */
5476 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5477 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5479 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5480 conn_temp->connection_id, pipelen);
5482 if(conn_temp->bundle->num_connections < max_host_connections &&
5483 data->state.conn_cache->num_connections < max_total_connections) {
5484 /* We want a new connection anyway */
5487 infof(data, "We can reuse, but we want a new connection anyway\n");
5494 * We already have a connection for this, we got the former connection
5495 * in the conn_temp variable and thus we need to cleanup the one we
5496 * just allocated before we can move along and use the previously
5499 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5500 handle in a multi stack may nick it */
5501 reuse_conn(conn, conn_temp);
5502 free(conn); /* we don't need this anymore */
5506 /* set a pointer to the hostname we display */
5507 fix_hostname(data, conn, &conn->host);
5509 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5510 conn->connection_id,
5511 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5514 /* We have decided that we want a new connection. However, we may not
5515 be able to do that if we have reached the limit of how many
5516 connections we are allowed to open. */
5517 struct connectbundle *bundle;
5519 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5521 if(max_host_connections > 0 && bundle &&
5522 (bundle->num_connections >= max_host_connections)) {
5523 struct connectdata *conn_candidate;
5525 /* The bundle is full. Let's see if we can kill a connection. */
5526 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5528 if(conn_candidate) {
5529 /* Set the connection's owner correctly, then kill it */
5530 conn_candidate->data = data;
5531 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5534 no_connections_available = TRUE;
5537 if(max_total_connections > 0 &&
5538 (data->state.conn_cache->num_connections >= max_total_connections)) {
5539 struct connectdata *conn_candidate;
5541 /* The cache is full. Let's see if we can kill a connection. */
5542 conn_candidate = find_oldest_idle_connection(data);
5544 if(conn_candidate) {
5545 /* Set the connection's owner correctly, then kill it */
5546 conn_candidate->data = data;
5547 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5550 no_connections_available = TRUE;
5554 if(no_connections_available) {
5555 infof(data, "No connections available.\n");
5560 result = CURLE_NO_CONNECTION_AVAILABLE;
5565 * This is a brand new connection, so let's store it in the connection
5568 ConnectionStore(data, conn);
5572 /* Mark the connection as used */
5575 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5579 * Setup whatever necessary for a resumed transfer
5581 result = setup_range(data);
5585 /* Continue connectdata initialization here. */
5588 * Inherit the proper values from the urldata struct AFTER we have arranged
5589 * the persistent connection stuff
5591 conn->fread_func = data->set.fread_func;
5592 conn->fread_in = data->set.in;
5593 conn->seek_func = data->set.seek_func;
5594 conn->seek_client = data->set.seek_client;
5596 /*************************************************************
5597 * Resolve the address of the server or proxy
5598 *************************************************************/
5599 result = resolve_server(data, conn, async);
5603 Curl_safefree(options);
5604 Curl_safefree(passwd);
5605 Curl_safefree(user);
5606 Curl_safefree(proxy);
5610 /* Curl_setup_conn() is called after the name resolve initiated in
5611 * create_conn() is all done.
5613 * Curl_setup_conn() also handles reused connections
5615 * conn->data MUST already have been setup fine (in create_conn)
5618 CURLcode Curl_setup_conn(struct connectdata *conn,
5619 bool *protocol_done)
5621 CURLcode result = CURLE_OK;
5622 struct SessionHandle *data = conn->data;
5624 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5626 if(conn->handler->flags & PROTOPT_NONETWORK) {
5627 /* nothing to setup when not using a network */
5628 *protocol_done = TRUE;
5631 *protocol_done = FALSE; /* default to not done */
5633 /* set proxy_connect_closed to false unconditionally already here since it
5634 is used strictly to provide extra information to a parent function in the
5635 case of proxy CONNECT failures and we must make sure we don't have it
5636 lingering set from a previous invoke */
5637 conn->bits.proxy_connect_closed = FALSE;
5640 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5641 * basically anything through a http proxy we can't limit this based on
5644 if(data->set.str[STRING_USERAGENT]) {
5645 Curl_safefree(conn->allocptr.uagent);
5646 conn->allocptr.uagent =
5647 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5648 if(!conn->allocptr.uagent)
5649 return CURLE_OUT_OF_MEMORY;
5652 data->req.headerbytecount = 0;
5654 #ifdef CURL_DO_LINEEND_CONV
5655 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5656 #endif /* CURL_DO_LINEEND_CONV */
5658 /* set start time here for timeout purposes in the connect procedure, it
5659 is later set again for the progress meter purpose */
5660 conn->now = Curl_tvnow();
5662 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5663 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5664 result = Curl_connecthost(conn, conn->dns_entry);
5669 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5670 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5671 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5672 *protocol_done = TRUE;
5673 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5674 Curl_verboseconnect(conn);
5677 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5678 set this here perhaps a second time */
5682 * This check is quite a hack. We're calling _fsetmode to fix the problem
5683 * with fwrite converting newline characters (you get mangled text files,
5684 * and corrupted binary files when you download to stdout and redirect it to
5688 if((data->set.out)->_handle == NULL) {
5689 _fsetmode(stdout, "b");
5696 CURLcode Curl_connect(struct SessionHandle *data,
5697 struct connectdata **in_connect,
5699 bool *protocol_done)
5703 *asyncp = FALSE; /* assume synchronous resolves by default */
5705 /* call the stuff that needs to be called */
5706 code = create_conn(data, in_connect, asyncp);
5708 if(CURLE_OK == code) {
5710 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5712 *protocol_done = TRUE;
5714 /* DNS resolution is done: that's either because this is a reused
5715 connection, in which case DNS was unnecessary, or because DNS
5716 really did finish already (synch resolver/fast async resolve) */
5717 code = Curl_setup_conn(*in_connect, protocol_done);
5721 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5726 if(code && *in_connect) {
5727 /* We're not allowed to return failure with memory left allocated
5728 in the connectdata struct, free those here */
5729 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5730 *in_connect = NULL; /* return a NULL */
5736 CURLcode Curl_done(struct connectdata **connp,
5737 CURLcode status, /* an error if this is called after an
5738 error was detected */
5742 struct connectdata *conn;
5743 struct SessionHandle *data;
5745 DEBUGASSERT(*connp);
5751 /* Stop if Curl_done() has already been called */
5754 Curl_getoff_all_pipelines(data, conn);
5756 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5757 !data->set.reuse_forbid &&
5759 /* Stop if pipeline is not empty and we do not have to close
5763 conn->bits.done = TRUE; /* called just now! */
5765 /* Cleanup possible redirect junk */
5766 if(data->req.newurl) {
5767 free(data->req.newurl);
5768 data->req.newurl = NULL;
5770 if(data->req.location) {
5771 free(data->req.location);
5772 data->req.location = NULL;
5775 Curl_resolver_cancel(conn);
5777 if(conn->dns_entry) {
5778 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5779 conn->dns_entry = NULL;
5783 case CURLE_ABORTED_BY_CALLBACK:
5784 case CURLE_READ_ERROR:
5785 case CURLE_WRITE_ERROR:
5786 /* When we're aborted due to a callback return code it basically have to
5787 be counted as premature as there is trouble ahead if we don't. We have
5788 many callbacks and protocols work differently, we could potentially do
5789 this more fine-grained in the future. */
5795 /* this calls the protocol-specific function pointer previously set */
5796 if(conn->handler->done)
5797 result = conn->handler->done(conn, status, premature);
5801 if(!result && Curl_pgrsDone(conn))
5802 result = CURLE_ABORTED_BY_CALLBACK;
5804 /* if the transfer was completed in a paused state there can be buffered
5805 data left to write and then kill */
5806 if(data->state.tempwrite) {
5807 free(data->state.tempwrite);
5808 data->state.tempwrite = NULL;
5811 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5812 forced us to close this no matter what we think.
5814 if conn->bits.close is TRUE, it means that the connection should be
5815 closed in spite of all our efforts to be nice, due to protocol
5816 restrictions in our or the server's end
5818 if premature is TRUE, it means this connection was said to be DONE before
5819 the entire request operation is complete and thus we can't know in what
5820 state it is for re-using, so we're forced to close it. In a perfect world
5821 we can add code that keep track of if we really must close it here or not,
5822 but currently we have no such detail knowledge.
5824 if(data->set.reuse_forbid || conn->bits.close || premature) {
5825 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5827 /* If we had an error already, make sure we return that one. But
5828 if we got a new error, return that. */
5833 /* the connection is no longer in use */
5834 if(ConnectionDone(data, conn)) {
5835 /* remember the most recently used connection */
5836 data->state.lastconnect = conn;
5838 infof(data, "Connection #%ld to host %s left intact\n",
5839 conn->connection_id,
5840 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5843 data->state.lastconnect = NULL;
5846 *connp = NULL; /* to make the caller of this function better detect that
5847 this was either closed or handed over to the connection
5848 cache here, and therefore cannot be used from this point on
5850 Curl_free_request_state(data);
5856 * do_init() inits the readwrite session. This is inited each time (in the DO
5857 * function before the protocol-specific DO functions are invoked) for a
5858 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5859 * nothing in here depends on stuff that are setup dynamically for the
5863 static CURLcode do_init(struct connectdata *conn)
5865 struct SessionHandle *data = conn->data;
5866 struct SingleRequest *k = &data->req;
5868 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5869 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5870 data->state.expect100header = FALSE;
5872 if(data->set.opt_no_body)
5873 /* in HTTP lingo, no body means using the HEAD request... */
5874 data->set.httpreq = HTTPREQ_HEAD;
5875 else if(HTTPREQ_HEAD == data->set.httpreq)
5876 /* ... but if unset there really is no perfect method that is the
5877 "opposite" of HEAD but in reality most people probably think GET
5878 then. The important thing is that we can't let it remain HEAD if the
5879 opt_no_body is set FALSE since then we'll behave wrong when getting
5881 data->set.httpreq = HTTPREQ_GET;
5883 k->start = Curl_tvnow(); /* start time */
5884 k->now = k->start; /* current time is now */
5885 k->header = TRUE; /* assume header */
5889 k->buf = data->state.buffer;
5890 k->uploadbuf = data->state.uploadbuffer;
5891 k->hbufp = data->state.headerbuff;
5892 k->ignorebody=FALSE;
5894 Curl_speedinit(data);
5896 Curl_pgrsSetUploadCounter(data, 0);
5897 Curl_pgrsSetDownloadCounter(data, 0);
5903 * do_complete is called when the DO actions are complete.
5905 * We init chunking and trailer bits to their default values here immediately
5906 * before receiving any header data for the current request in the pipeline.
5908 static void do_complete(struct connectdata *conn)
5910 conn->data->req.chunk=FALSE;
5911 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5912 conn->sockfd:conn->writesockfd)+1;
5913 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5916 CURLcode Curl_do(struct connectdata **connp, bool *done)
5918 CURLcode result=CURLE_OK;
5919 struct connectdata *conn = *connp;
5920 struct SessionHandle *data = conn->data;
5922 if(conn->handler->do_it) {
5923 /* generic protocol-specific function pointer set in curl_connect() */
5924 result = conn->handler->do_it(conn, done);
5926 /* This was formerly done in transfer.c, but we better do it here */
5927 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5929 * If the connection is using an easy handle, call reconnect
5930 * to re-establish the connection. Otherwise, let the multi logic
5931 * figure out how to re-establish the connection.
5934 result = Curl_reconnect_request(connp);
5936 if(result == CURLE_OK) {
5937 /* ... finally back to actually retry the DO phase */
5938 conn = *connp; /* re-assign conn since Curl_reconnect_request
5939 creates a new connection */
5940 result = conn->handler->do_it(conn, done);
5947 if((result == CURLE_OK) && *done)
5948 /* do_complete must be called after the protocol-specific DO function */
5955 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5956 * second stage DO state which (wrongly) was introduced to support FTP's
5957 * second connection.
5959 * TODO: A future libcurl should be able to work away this state.
5961 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5962 * DOING state there's more work to do!
5965 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5967 CURLcode result=CURLE_OK;
5971 if(conn->handler->do_more)
5972 result = conn->handler->do_more(conn, complete);
5974 if(!result && (*complete == 1))
5975 /* do_complete must be called after the protocol-specific DO function */