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 static int connection_id_counter = 0;
3261 /* Assign a number to the connection for easier tracking in the log
3263 conn->connection_id = connection_id_counter++;
3265 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3266 if(result != CURLE_OK)
3267 conn->connection_id = -1;
3272 /* after a TCP connection to the proxy has been verified, this function does
3273 the next magic step.
3275 Note: this function's sub-functions call failf()
3278 CURLcode Curl_connected_proxy(struct connectdata *conn,
3281 if(!conn->bits.proxy || sockindex)
3282 /* this magic only works for the primary socket as the secondary is used
3283 for FTP only and it has FTP specific magic in ftp.c */
3286 switch(conn->proxytype) {
3287 #ifndef CURL_DISABLE_PROXY
3288 case CURLPROXY_SOCKS5:
3289 case CURLPROXY_SOCKS5_HOSTNAME:
3290 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3291 conn->host.name, conn->remote_port,
3294 case CURLPROXY_SOCKS4:
3295 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3296 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3298 case CURLPROXY_SOCKS4A:
3299 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3300 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3302 #endif /* CURL_DISABLE_PROXY */
3303 case CURLPROXY_HTTP:
3304 case CURLPROXY_HTTP_1_0:
3305 /* do nothing here. handled later. */
3309 } /* switch proxytype */
3315 * verboseconnect() displays verbose information after a connect
3317 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3318 void Curl_verboseconnect(struct connectdata *conn)
3320 if(conn->data->set.verbose)
3321 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3322 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3323 conn->ip_addr_str, conn->port, conn->connection_id);
3327 int Curl_protocol_getsock(struct connectdata *conn,
3328 curl_socket_t *socks,
3331 if(conn->handler->proto_getsock)
3332 return conn->handler->proto_getsock(conn, socks, numsocks);
3333 return GETSOCK_BLANK;
3336 int Curl_doing_getsock(struct connectdata *conn,
3337 curl_socket_t *socks,
3340 if(conn && conn->handler->doing_getsock)
3341 return conn->handler->doing_getsock(conn, socks, numsocks);
3342 return GETSOCK_BLANK;
3346 * We are doing protocol-specific connecting and this is being called over and
3347 * over from the multi interface until the connection phase is done on
3351 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3354 CURLcode result=CURLE_OK;
3356 if(conn && conn->handler->connecting) {
3358 result = conn->handler->connecting(conn, done);
3367 * We are DOING this is being called over and over from the multi interface
3368 * until the DOING phase is done on protocol layer.
3371 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3373 CURLcode result=CURLE_OK;
3375 if(conn && conn->handler->doing) {
3377 result = conn->handler->doing(conn, done);
3386 * We have discovered that the TCP connection has been successful, we can now
3387 * proceed with some action.
3390 CURLcode Curl_protocol_connect(struct connectdata *conn,
3391 bool *protocol_done)
3393 CURLcode result=CURLE_OK;
3395 *protocol_done = FALSE;
3397 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3398 /* We already are connected, get back. This may happen when the connect
3399 worked fine in the first call, like when we connect to a local server
3400 or proxy. Note that we don't know if the protocol is actually done.
3402 Unless this protocol doesn't have any protocol-connect callback, as
3403 then we know we're done. */
3404 if(!conn->handler->connecting)
3405 *protocol_done = TRUE;
3410 if(!conn->bits.protoconnstart) {
3412 result = Curl_proxy_connect(conn);
3416 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3417 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3418 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3419 before proceeding further. Return CURLE_OK so we'll be called again */
3422 if(conn->handler->connect_it) {
3423 /* is there a protocol-specific connect() procedure? */
3425 /* Call the protocol-specific connect function */
3426 result = conn->handler->connect_it(conn, protocol_done);
3429 *protocol_done = TRUE;
3431 /* it has started, possibly even completed but that knowledge isn't stored
3434 conn->bits.protoconnstart = TRUE;
3437 return result; /* pass back status */
3441 * Helpers for IDNA convertions.
3443 static bool is_ASCII_name(const char *hostname)
3445 const unsigned char *ch = (const unsigned char*)hostname;
3456 * Check if characters in hostname is allowed in Top Level Domain.
3458 static bool tld_check_name(struct SessionHandle *data,
3459 const char *ace_hostname)
3462 char *uc_name = NULL;
3464 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3465 const char *tld_errmsg = "<no msg>";
3470 /* Convert (and downcase) ACE-name back into locale's character set */
3471 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3472 if(rc != IDNA_SUCCESS)
3475 rc = tld_check_lz(uc_name, &err_pos, NULL);
3476 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3477 #ifdef HAVE_TLD_STRERROR
3478 if(rc != TLD_SUCCESS)
3479 tld_errmsg = tld_strerror((Tld_rc)rc);
3481 if(rc == TLD_INVALID)
3482 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3483 tld_errmsg, err_pos, uc_name[err_pos],
3484 uc_name[err_pos] & 255);
3485 else if(rc != TLD_SUCCESS)
3486 infof(data, "WARNING: TLD check for %s failed; %s\n",
3487 uc_name, tld_errmsg);
3488 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3491 if(rc != TLD_SUCCESS)
3499 * Perform any necessary IDN conversion of hostname
3501 static void fix_hostname(struct SessionHandle *data,
3502 struct connectdata *conn, struct hostname *host)
3509 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3513 /* set the name we use to display the host name */
3514 host->dispname = host->name;
3516 len = strlen(host->name);
3517 if(host->name[len-1] == '.')
3518 /* strip off a single trailing dot if present, primarily for SNI but
3519 there's no use for it */
3520 host->name[len-1]=0;
3522 if(!is_ASCII_name(host->name)) {
3524 /*************************************************************
3525 * Check name for non-ASCII and convert hostname to ACE form.
3526 *************************************************************/
3527 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3528 char *ace_hostname = NULL;
3529 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3530 infof (data, "Input domain encoded as `%s'\n",
3531 stringprep_locale_charset ());
3532 if(rc != IDNA_SUCCESS)
3533 infof(data, "Failed to convert %s to ACE; %s\n",
3534 host->name, Curl_idn_strerror(conn,rc));
3536 /* tld_check_name() displays a warning if the host name contains
3537 "illegal" characters for this TLD */
3538 (void)tld_check_name(data, ace_hostname);
3540 host->encalloc = ace_hostname;
3541 /* change the name pointer to point to the encoded hostname */
3542 host->name = host->encalloc;
3545 #elif defined(USE_WIN32_IDN)
3546 /*************************************************************
3547 * Check name for non-ASCII and convert hostname to ACE form.
3548 *************************************************************/
3549 char *ace_hostname = NULL;
3550 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3552 infof(data, "Failed to convert %s to ACE;\n",
3555 host->encalloc = ace_hostname;
3556 /* change the name pointer to point to the encoded hostname */
3557 host->name = host->encalloc;
3560 infof(data, "IDN support not present, can't parse Unicode domains\n");
3565 static void llist_dtor(void *user, void *element)
3573 * Allocate and initialize a new connectdata object.
3575 static struct connectdata *allocate_conn(struct SessionHandle *data)
3577 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3581 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3582 already from start to avoid NULL
3583 situations and checks */
3585 /* and we setup a few fields in case we end up actually using this struct */
3587 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3588 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3589 conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */
3590 conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */
3591 conn->connection_id = -1; /* no ID */
3592 conn->port = -1; /* unknown at this point */
3593 conn->remote_port = -1; /* unknown */
3595 /* Default protocol-independent behavior doesn't support persistent
3596 connections, so we set this to force-close. Protocols that support
3597 this need to set this to FALSE in their "curl_do" functions. */
3598 connclose(conn, "Default to force-close");
3600 /* Store creation time to help future close decision making */
3601 conn->created = Curl_tvnow();
3603 conn->data = data; /* Setup the association between this connection
3604 and the SessionHandle */
3606 conn->proxytype = data->set.proxytype; /* type */
3608 #ifdef CURL_DISABLE_PROXY
3610 conn->bits.proxy = FALSE;
3611 conn->bits.httpproxy = FALSE;
3612 conn->bits.proxy_user_passwd = FALSE;
3613 conn->bits.tunnel_proxy = FALSE;
3615 #else /* CURL_DISABLE_PROXY */
3617 /* note that these two proxy bits are now just on what looks to be
3618 requested, they may be altered down the road */
3619 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3620 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3621 conn->bits.httpproxy = (conn->bits.proxy &&
3622 (conn->proxytype == CURLPROXY_HTTP ||
3623 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3624 conn->bits.proxy_user_passwd =
3625 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3626 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3628 #endif /* CURL_DISABLE_PROXY */
3630 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3631 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3632 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3634 conn->verifypeer = data->set.ssl.verifypeer;
3635 conn->verifyhost = data->set.ssl.verifyhost;
3637 conn->ip_version = data->set.ipver;
3639 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3640 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3641 conn->ntlm_auth_hlpr_pid = 0;
3642 conn->challenge_header = NULL;
3643 conn->response_header = NULL;
3646 if(Curl_multi_pipeline_enabled(data->multi) &&
3647 !conn->master_buffer) {
3648 /* Allocate master_buffer to be used for pipelining */
3649 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3650 if(!conn->master_buffer)
3654 /* Initialize the pipeline lists */
3655 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3656 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3657 if(!conn->send_pipe || !conn->recv_pipe)
3661 conn->data_prot = PROT_CLEAR;
3664 /* Store the local bind parameters that will be used for this connection */
3665 if(data->set.str[STRING_DEVICE]) {
3666 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3670 conn->localportrange = data->set.localportrange;
3671 conn->localport = data->set.localport;
3673 /* the close socket stuff needs to be copied to the connection struct as
3674 it may live on without (this specific) SessionHandle */
3675 conn->fclosesocket = data->set.fclosesocket;
3676 conn->closesocket_client = data->set.closesocket_client;
3681 Curl_llist_destroy(conn->send_pipe, NULL);
3682 Curl_llist_destroy(conn->recv_pipe, NULL);
3684 conn->send_pipe = NULL;
3685 conn->recv_pipe = NULL;
3687 Curl_safefree(conn->master_buffer);
3688 Curl_safefree(conn->localdev);
3689 Curl_safefree(conn);
3693 static CURLcode findprotocol(struct SessionHandle *data,
3694 struct connectdata *conn,
3695 const char *protostr)
3697 const struct Curl_handler * const *pp;
3698 const struct Curl_handler *p;
3700 /* Scan protocol handler table and match against 'protostr' to set a few
3701 variables based on the URL. Now that the handler may be changed later
3702 when the protocol specific setup function is called. */
3703 for(pp = protocols; (p = *pp) != NULL; pp++) {
3704 if(Curl_raw_equal(p->scheme, protostr)) {
3705 /* Protocol found in table. Check if allowed */
3706 if(!(data->set.allowed_protocols & p->protocol))
3710 /* it is allowed for "normal" request, now do an extra check if this is
3711 the result of a redirect */
3712 if(data->state.this_is_a_follow &&
3713 !(data->set.redir_protocols & p->protocol))
3717 /* Perform setup complement if some. */
3718 conn->handler = conn->given = p;
3720 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3726 /* The protocol was not found in the table, but we don't have to assign it
3727 to anything since it is already assigned to a dummy-struct in the
3728 create_conn() function when the connectdata struct is allocated. */
3729 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3732 return CURLE_UNSUPPORTED_PROTOCOL;
3736 * Parse URL and fill in the relevant members of the connection struct.
3738 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3739 struct connectdata *conn,
3741 char **userp, char **passwdp,
3746 char *path = data->state.path;
3749 char protobuf[16] = "";
3750 const char *protop = "";
3752 bool rebuild_url = FALSE;
3754 *prot_missing = FALSE;
3756 /*************************************************************
3759 * We need to parse the url even when using the proxy, because we will need
3760 * the hostname and port in case we are trying to SSL connect through the
3761 * proxy -- and we don't know if we will need to use SSL until we parse the
3763 ************************************************************/
3764 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3766 Curl_raw_equal(protobuf, "file")) {
3767 if(path[0] == '/' && path[1] == '/') {
3768 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3769 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3770 * file://localhost/<path> is similar to how other schemes treat missing
3771 * hostnames. See RFC 1808. */
3773 /* This cannot be done with strcpy() in a portable manner, since the
3774 memory areas overlap! */
3775 memmove(path, path + 2, strlen(path + 2)+1);
3778 * we deal with file://<host>/<path> differently since it supports no
3779 * hostname other than "localhost" and "127.0.0.1", which is unique among
3780 * the URL protocols specified in RFC 1738
3782 if(path[0] != '/') {
3783 /* the URL included a host name, we ignore host names in file:// URLs
3784 as the standards don't define what to do with them */
3785 char *ptr=strchr(path, '/');
3787 /* there was a slash present
3789 RFC1738 (section 3.1, page 5) says:
3791 The rest of the locator consists of data specific to the scheme,
3792 and is known as the "url-path". It supplies the details of how the
3793 specified resource can be accessed. Note that the "/" between the
3794 host (or port) and the url-path is NOT part of the url-path.
3796 As most agents use file://localhost/foo to get '/foo' although the
3797 slash preceding foo is a separator and not a slash for the path,
3798 a URL as file://localhost//foo must be valid as well, to refer to
3799 the same file with an absolute path.
3802 if(ptr[1] && ('/' == ptr[1]))
3803 /* if there was two slashes, we skip the first one as that is then
3804 used truly as a separator */
3807 /* This cannot be made with strcpy, as the memory chunks overlap! */
3808 memmove(path, ptr, strlen(ptr)+1);
3812 protop = "file"; /* protocol string */
3818 if(2 > sscanf(data->change.url,
3819 "%15[^\n:]://%[^\n/?]%[^\n]",
3821 conn->host.name, path)) {
3824 * The URL was badly formatted, let's try the browser-style _without_
3825 * protocol specified like 'http://'.
3827 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3830 * We couldn't even get this format.
3831 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3832 * assigned, but the return value is EOF!
3834 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3835 if(!(rc == -1 && *conn->host.name))
3838 failf(data, "<url> malformed");
3839 return CURLE_URL_MALFORMAT;
3844 * Since there was no protocol part specified, we guess what protocol it
3845 * is based on the first letters of the server name.
3848 /* Note: if you add a new protocol, please update the list in
3849 * lib/version.c too! */
3851 if(checkprefix("FTP.", conn->host.name))
3853 else if(checkprefix("DICT.", conn->host.name))
3855 else if(checkprefix("LDAP.", conn->host.name))
3857 else if(checkprefix("IMAP.", conn->host.name))
3859 else if(checkprefix("SMTP.", conn->host.name))
3861 else if(checkprefix("POP3.", conn->host.name))
3867 *prot_missing = TRUE; /* not given in URL */
3873 /* We search for '?' in the host name (but only on the right side of a
3874 * @-letter to allow ?-letters in username and password) to handle things
3875 * like http://example.com?param= (notice the missing '/').
3877 at = strchr(conn->host.name, '@');
3879 query = strchr(at+1, '?');
3881 query = strchr(conn->host.name, '?');
3884 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3885 a slash after the '?', that is where the path currently begins and the
3886 '?string' is still part of the host name.
3888 We must move the trailing part from the host name and put it first in
3889 the path. And have it all prefixed with a slash.
3892 size_t hostlen = strlen(query);
3893 size_t pathlen = strlen(path);
3895 /* move the existing path plus the zero byte forward, to make room for
3896 the host-name part */
3897 memmove(path+hostlen+1, path, pathlen+1);
3899 /* now copy the trailing host part in front of the existing path */
3900 memcpy(path+1, query, hostlen);
3902 path[0]='/'; /* prepend the missing slash */
3905 *query=0; /* now cut off the hostname at the ? */
3908 /* if there's no path set, use a single slash */
3913 /* If the URL is malformatted (missing a '/' after hostname before path) we
3914 * insert a slash here. The only letter except '/' we accept to start a path
3917 if(path[0] == '?') {
3918 /* We need this function to deal with overlapping memory areas. We know
3919 that the memory area 'path' points to is 'urllen' bytes big and that
3920 is bigger than the path. Use +1 to move the zero byte too. */
3921 memmove(&path[1], path, strlen(path)+1);
3926 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3927 char *newp = Curl_dedotdotify(path);
3929 return CURLE_OUT_OF_MEMORY;
3931 if(strcmp(newp, path)) {
3933 free(data->state.pathbuffer);
3934 data->state.pathbuffer = newp;
3935 data->state.path = newp;
3943 * "rebuild_url" means that one or more URL components have been modified so
3944 * we need to generate an updated full version. We need the corrected URL
3945 * when communicating over HTTP proxy and we don't know at this point if
3946 * we're using a proxy or not.
3951 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3953 size_t urllen = strlen(data->change.url); /* original URL length */
3955 size_t prefixlen = strlen(conn->host.name);
3958 prefixlen += strlen(protop) + strlen("://");
3960 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3962 return CURLE_OUT_OF_MEMORY;
3964 /* copy the prefix */
3965 memcpy(reurl, data->change.url, prefixlen);
3967 /* append the trailing piece + zerobyte */
3968 memcpy(&reurl[prefixlen], path, plen + 1);
3970 /* possible free the old one */
3971 if(data->change.url_alloc) {
3972 Curl_safefree(data->change.url);
3973 data->change.url_alloc = FALSE;
3976 infof(data, "Rebuilt URL to: %s\n", reurl);
3978 data->change.url = reurl;
3979 data->change.url_alloc = TRUE; /* free this later */
3983 * Parse the login details from the URL and strip them out of
3986 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3987 if(result != CURLE_OK)
3990 if(conn->host.name[0] == '[') {
3991 /* This looks like an IPv6 address literal. See if there is an address
3992 scope if there is no location header */
3993 char *percent = strchr(conn->host.name, '%');
3995 unsigned int identifier_offset = 3;
3997 unsigned long scope;
3998 if(strncmp("%25", percent, 3) != 0) {
4000 "Please URL encode %% as %%25, see RFC 6874.\n");
4001 identifier_offset = 1;
4003 scope = strtoul(percent + identifier_offset, &endp, 10);
4005 /* The address scope was well formed. Knock it out of the
4007 memmove(percent, endp, strlen(endp)+1);
4008 conn->scope = (unsigned int)scope;
4011 /* Zone identifier is not numeric */
4012 #if defined(HAVE_NET_IF_H) && defined(IFNAMSIZ) && defined(HAVE_IF_NAMETOINDEX)
4013 char ifname[IFNAMSIZ + 2];
4014 char *square_bracket;
4015 unsigned int scopeidx = 0;
4016 strncpy(ifname, percent + identifier_offset, IFNAMSIZ + 2);
4017 /* Ensure nullbyte termination */
4018 ifname[IFNAMSIZ + 1] = '\0';
4019 square_bracket = strchr(ifname, ']');
4020 if(square_bracket) {
4022 *square_bracket = '\0';
4023 scopeidx = if_nametoindex(ifname);
4025 infof(data, "Invalid network interface: %s; %s\n", ifname,
4030 /* Remove zone identifier from hostname */
4032 percent + identifier_offset + strlen(ifname),
4033 identifier_offset + strlen(ifname));
4034 conn->scope = scopeidx;
4037 #endif /* HAVE_NET_IF_H && IFNAMSIZ */
4038 infof(data, "Invalid IPv6 address format\n");
4044 /* Override any scope that was set above. */
4045 conn->scope = data->set.scope;
4047 /* Remove the fragment part of the path. Per RFC 2396, this is always the
4048 last part of the URI. We are looking for the first '#' so that we deal
4049 gracefully with non conformant URI such as http://example.com#foo#bar. */
4050 fragment = strchr(path, '#');
4054 /* we know the path part ended with a fragment, so we know the full URL
4055 string does too and we need to cut it off from there so it isn't used
4057 fragment = strchr(data->change.url, '#');
4063 * So if the URL was A://B/C#D,
4065 * conn->host.name is B
4066 * data->state.path is /C
4069 return findprotocol(data, conn, protop);
4073 * If we're doing a resumed transfer, we need to setup our stuff
4076 static CURLcode setup_range(struct SessionHandle *data)
4078 struct UrlState *s = &data->state;
4079 s->resume_from = data->set.set_resume_from;
4080 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
4081 if(s->rangestringalloc)
4085 s->range = aprintf("%" CURL_FORMAT_CURL_OFF_TU "-", s->resume_from);
4087 s->range = strdup(data->set.str[STRING_SET_RANGE]);
4089 s->rangestringalloc = (s->range)?TRUE:FALSE;
4092 return CURLE_OUT_OF_MEMORY;
4094 /* tell ourselves to fetch this range */
4095 s->use_range = TRUE; /* enable range download */
4098 s->use_range = FALSE; /* disable range download */
4105 * setup_connection_internals() -
4107 * Setup connection internals specific to the requested protocol in the
4108 * SessionHandle. This is inited and setup before the connection is made but
4109 * is about the particular protocol that is to be used.
4111 * This MUST get called after proxy magic has been figured out.
4113 static CURLcode setup_connection_internals(struct connectdata *conn)
4115 const struct Curl_handler * p;
4117 struct SessionHandle *data = conn->data;
4119 /* in some case in the multi state-machine, we go back to the CONNECT state
4120 and then a second (or third or...) call to this function will be made
4121 without doing a DISCONNECT or DONE in between (since the connection is
4122 yet in place) and therefore this function needs to first make sure
4123 there's no lingering previous data allocated. */
4124 Curl_free_request_state(data);
4126 memset(&data->req, 0, sizeof(struct SingleRequest));
4127 data->req.maxdownload = -1;
4129 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4131 /* Perform setup complement if some. */
4134 if(p->setup_connection) {
4135 result = (*p->setup_connection)(conn);
4137 if(result != CURLE_OK)
4140 p = conn->handler; /* May have changed. */
4144 /* we check for -1 here since if proxy was detected already, this
4145 was very likely already set to the proxy port */
4146 conn->port = p->defport;
4148 /* only if remote_port was not already parsed off the URL we use the
4149 default port number */
4150 if(conn->remote_port < 0)
4151 conn->remote_port = (unsigned short)conn->given->defport;
4157 * Curl_free_request_state() should free temp data that was allocated in the
4158 * SessionHandle for this single request.
4161 void Curl_free_request_state(struct SessionHandle *data)
4163 Curl_safefree(data->req.protop);
4167 #ifndef CURL_DISABLE_PROXY
4168 /****************************************************************
4169 * Checks if the host is in the noproxy list. returns true if it matches
4170 * and therefore the proxy should NOT be used.
4171 ****************************************************************/
4172 static bool check_noproxy(const char* name, const char* no_proxy)
4174 /* no_proxy=domain1.dom,host.domain2.dom
4175 * (a comma-separated list of hosts which should
4176 * not be proxied, or an asterisk to override
4177 * all proxy variables)
4181 const char* separator = ", ";
4182 size_t no_proxy_len;
4186 if(no_proxy && no_proxy[0]) {
4187 if(Curl_raw_equal("*", no_proxy)) {
4191 /* NO_PROXY was specified and it wasn't just an asterisk */
4193 no_proxy_len = strlen(no_proxy);
4194 endptr = strchr(name, ':');
4196 namelen = endptr - name;
4198 namelen = strlen(name);
4200 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4201 while(tok_start < no_proxy_len &&
4202 strchr(separator, no_proxy[tok_start]) != NULL) {
4203 /* Look for the beginning of the token. */
4207 if(tok_start == no_proxy_len)
4208 break; /* It was all trailing separator chars, no more tokens. */
4210 for(tok_end = tok_start; tok_end < no_proxy_len &&
4211 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4212 /* Look for the end of the token. */
4215 /* To match previous behaviour, where it was necessary to specify
4216 * ".local.com" to prevent matching "notlocal.com", we will leave
4219 if(no_proxy[tok_start] == '.')
4222 if((tok_end - tok_start) <= namelen) {
4223 /* Match the last part of the name to the domain we are checking. */
4224 const char *checkn = name + namelen - (tok_end - tok_start);
4225 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4226 tok_end - tok_start)) {
4227 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4228 /* We either have an exact match, or the previous character is a .
4229 * so it is within the same domain, so no proxy for this host.
4234 } /* if((tok_end - tok_start) <= namelen) */
4235 } /* for(tok_start = 0; tok_start < no_proxy_len;
4236 tok_start = tok_end + 1) */
4237 } /* NO_PROXY was specified and it wasn't just an asterisk */
4242 /****************************************************************
4243 * Detect what (if any) proxy to use. Remember that this selects a host
4244 * name and is not limited to HTTP proxies only.
4245 * The returned pointer must be freed by the caller (unless NULL)
4246 ****************************************************************/
4247 static char *detect_proxy(struct connectdata *conn)
4251 #ifndef CURL_DISABLE_HTTP
4252 /* If proxy was not specified, we check for default proxy environment
4253 * variables, to enable i.e Lynx compliance:
4255 * http_proxy=http://some.server.dom:port/
4256 * https_proxy=http://some.server.dom:port/
4257 * ftp_proxy=http://some.server.dom:port/
4258 * no_proxy=domain1.dom,host.domain2.dom
4259 * (a comma-separated list of hosts which should
4260 * not be proxied, or an asterisk to override
4261 * all proxy variables)
4262 * all_proxy=http://some.server.dom:port/
4263 * (seems to exist for the CERN www lib. Probably
4264 * the first to check for.)
4266 * For compatibility, the all-uppercase versions of these variables are
4267 * checked if the lowercase versions don't exist.
4269 char *no_proxy=NULL;
4270 char proxy_env[128];
4272 no_proxy=curl_getenv("no_proxy");
4274 no_proxy=curl_getenv("NO_PROXY");
4276 if(!check_noproxy(conn->host.name, no_proxy)) {
4277 /* It was not listed as without proxy */
4278 const char *protop = conn->handler->scheme;
4279 char *envp = proxy_env;
4282 /* Now, build <protocol>_proxy and check for such a one to use */
4284 *envp++ = (char)tolower((int)*protop++);
4287 strcpy(envp, "_proxy");
4289 /* read the protocol proxy: */
4290 prox=curl_getenv(proxy_env);
4293 * We don't try the uppercase version of HTTP_PROXY because of
4296 * When curl is used in a webserver application
4297 * environment (cgi or php), this environment variable can
4298 * be controlled by the web server user by setting the
4299 * http header 'Proxy:' to some value.
4301 * This can cause 'internal' http/ftp requests to be
4302 * arbitrarily redirected by any external attacker.
4304 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4305 /* There was no lowercase variable, try the uppercase version: */
4306 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4307 prox=curl_getenv(proxy_env);
4310 if(prox && *prox) { /* don't count "" strings */
4311 proxy = prox; /* use this */
4314 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4316 proxy=curl_getenv("ALL_PROXY");
4318 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4323 #else /* !CURL_DISABLE_HTTP */
4326 #endif /* CURL_DISABLE_HTTP */
4332 * If this is supposed to use a proxy, we need to figure out the proxy
4333 * host name, so that we can re-use an existing connection
4334 * that may exist registered to the same proxy host.
4335 * proxy will be freed before this function returns.
4337 static CURLcode parse_proxy(struct SessionHandle *data,
4338 struct connectdata *conn, char *proxy)
4343 /* We use 'proxyptr' to point to the proxy name from now on... */
4348 /* We do the proxy host string parsing here. We want the host name and the
4349 * port name. Accept a protocol:// prefix
4352 /* Parse the protocol part if present */
4353 endofprot = strstr(proxy, "://");
4355 proxyptr = endofprot+3;
4356 if(checkprefix("socks5h", proxy))
4357 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4358 else if(checkprefix("socks5", proxy))
4359 conn->proxytype = CURLPROXY_SOCKS5;
4360 else if(checkprefix("socks4a", proxy))
4361 conn->proxytype = CURLPROXY_SOCKS4A;
4362 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4363 conn->proxytype = CURLPROXY_SOCKS4;
4364 /* Any other xxx:// : change to http proxy */
4367 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4369 /* Is there a username and password given in this proxy url? */
4370 atsign = strchr(proxyptr, '@');
4372 CURLcode res = CURLE_OK;
4373 char *proxyuser = NULL;
4374 char *proxypasswd = NULL;
4376 res = parse_login_details(proxyptr, atsign - proxyptr,
4377 &proxyuser, &proxypasswd, NULL);
4379 /* found user and password, rip them out. note that we are
4380 unescaping them, as there is otherwise no way to have a
4381 username or password with reserved characters like ':' in
4383 Curl_safefree(conn->proxyuser);
4384 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4385 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4387 conn->proxyuser = strdup("");
4389 if(!conn->proxyuser)
4390 res = CURLE_OUT_OF_MEMORY;
4392 Curl_safefree(conn->proxypasswd);
4393 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4394 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4396 conn->proxypasswd = strdup("");
4398 if(!conn->proxypasswd)
4399 res = CURLE_OUT_OF_MEMORY;
4403 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4404 atsign++; /* the right side of the @-letter */
4407 proxyptr = atsign; /* now use this instead */
4409 res = CURLE_OUT_OF_MEMORY;
4413 Curl_safefree(proxyuser);
4414 Curl_safefree(proxypasswd);
4420 /* start scanning for port number at this point */
4423 /* detect and extract RFC6874-style IPv6-addresses */
4424 if(*proxyptr == '[') {
4425 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4426 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
4429 /* There might be a zone identifier */
4430 if(strncmp("%25", ptr, 3))
4431 infof(data, "Please URL encode %% as %%25, see RFC 6874.\n");
4433 /* Allow unresered characters as defined in RFC 3986 */
4434 while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') ||
4435 (*ptr == '.') || (*ptr == '_') || (*ptr == '~')))
4439 /* yeps, it ended nicely with a bracket as well */
4442 infof(data, "Invalid IPv6 address format\n");
4444 /* Note that if this didn't end with a bracket, we still advanced the
4445 * proxyptr first, but I can't see anything wrong with that as no host
4446 * name nor a numeric can legally start with a bracket.
4450 /* Get port number off proxy.server.com:1080 */
4451 prox_portno = strchr(portptr, ':');
4453 *prox_portno = 0x0; /* cut off number from host name */
4455 /* now set the local port number */
4456 conn->port = strtol(prox_portno, NULL, 10);
4459 if(proxyptr[0]=='/')
4460 /* If the first character in the proxy string is a slash, fail
4461 immediately. The following code will otherwise clear the string which
4462 will lead to code running as if no proxy was set! */
4463 return CURLE_COULDNT_RESOLVE_PROXY;
4465 /* without a port number after the host name, some people seem to use
4466 a slash so we strip everything from the first slash */
4467 atsign = strchr(proxyptr, '/');
4469 *atsign = 0x0; /* cut off path part from host name */
4471 if(data->set.proxyport)
4472 /* None given in the proxy string, then get the default one if it is
4474 conn->port = data->set.proxyport;
4477 /* now, clone the cleaned proxy host name */
4478 conn->proxy.rawalloc = strdup(proxyptr);
4479 conn->proxy.name = conn->proxy.rawalloc;
4481 if(!conn->proxy.rawalloc)
4482 return CURLE_OUT_OF_MEMORY;
4488 * Extract the user and password from the authentication string
4490 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4491 struct connectdata *conn)
4493 char proxyuser[MAX_CURL_USER_LENGTH]="";
4494 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4496 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4497 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4498 MAX_CURL_USER_LENGTH);
4499 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4501 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4502 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4503 MAX_CURL_PASSWORD_LENGTH);
4504 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4507 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4508 if(!conn->proxyuser)
4509 return CURLE_OUT_OF_MEMORY;
4511 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4512 if(!conn->proxypasswd)
4513 return CURLE_OUT_OF_MEMORY;
4517 #endif /* CURL_DISABLE_PROXY */
4522 * Parse the login details (user name, password and options) from the URL and
4523 * strip them out of the host name
4525 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4528 * Outputs: (almost :- all currently undefined)
4529 * conn->bits.user_passwd - non-zero if non-default passwords exist
4530 * user - non-zero length if defined
4531 * passwd - non-zero length if defined
4532 * options - non-zero length if defined
4533 * conn->host.name - remove user name and password
4535 static CURLcode parse_url_login(struct SessionHandle *data,
4536 struct connectdata *conn,
4537 char **user, char **passwd, char **options)
4539 CURLcode result = CURLE_OK;
4541 char *passwdp = NULL;
4542 char *optionsp = NULL;
4544 /* At this point, we're hoping all the other special cases have
4545 * been taken care of, so conn->host.name is at most
4546 * [user[:password][;options]]@]hostname
4548 * We need somewhere to put the embedded details, so do that first.
4551 char *ptr = strchr(conn->host.name, '@');
4552 char *login = conn->host.name;
4554 DEBUGASSERT(!**user);
4555 DEBUGASSERT(!**passwd);
4556 DEBUGASSERT(!**options);
4561 /* We will now try to extract the
4562 * possible login information in a string like:
4563 * ftp://user:password@ftp.my.site:8021/README */
4564 conn->host.name = ++ptr;
4566 /* So the hostname is sane. Only bother interpreting the
4567 * results if we could care. It could still be wasted
4568 * work because it might be overtaken by the programmatically
4569 * set user/passwd, but doing that first adds more cases here :-(
4572 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4575 /* We could use the login information in the URL so extract it */
4576 result = parse_login_details(login, ptr - login - 1,
4577 &userp, &passwdp, &optionsp);
4578 if(result != CURLE_OK)
4584 /* We have a user in the URL */
4585 conn->bits.userpwd_in_url = TRUE;
4586 conn->bits.user_passwd = TRUE; /* enable user+password */
4588 /* Decode the user */
4589 newname = curl_easy_unescape(data, userp, 0, NULL);
4591 result = CURLE_OUT_OF_MEMORY;
4600 /* We have a password in the URL so decode it */
4601 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4603 result = CURLE_OUT_OF_MEMORY;
4608 *passwd = newpasswd;
4612 /* We have an options list in the URL so decode it */
4613 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4615 result = CURLE_OUT_OF_MEMORY;
4620 *options = newoptions;
4626 Curl_safefree(userp);
4627 Curl_safefree(passwdp);
4628 Curl_safefree(optionsp);
4634 * parse_login_details()
4636 * This is used to parse a login string for user name, password and options in
4637 * the following formats:
4641 * user:password;options
4643 * user;options:password
4651 * login [in] - The login string.
4652 * len [in] - The length of the login string.
4653 * userp [in/out] - The address where a pointer to newly allocated memory
4654 * holding the user will be stored upon completion.
4655 * passdwp [in/out] - The address where a pointer to newly allocated memory
4656 * holding the password will be stored upon completion.
4657 * optionsp [in/out] - The address where a pointer to newly allocated memory
4658 * holding the options will be stored upon completion.
4660 * Returns CURLE_OK on success.
4662 static CURLcode parse_login_details(const char *login, const size_t len,
4663 char **userp, char **passwdp,
4666 CURLcode result = CURLE_OK;
4670 const char *psep = NULL;
4671 const char *osep = NULL;
4676 /* Attempt to find the password separator */
4678 psep = strchr(login, ':');
4680 /* Within the constraint of the login string */
4681 if(psep >= login + len)
4685 /* Attempt to find the options separator */
4687 osep = strchr(login, ';');
4689 /* Within the constraint of the login string */
4690 if(osep >= login + len)
4694 /* Calculate the portion lengths */
4696 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4697 (osep ? (size_t)(osep - login) : len));
4699 (osep && osep > psep ? (size_t)(osep - psep) :
4700 (size_t)(login + len - psep)) - 1 : 0);
4702 (psep && psep > osep ? (size_t)(psep - osep) :
4703 (size_t)(login + len - osep)) - 1 : 0);
4705 /* Allocate the user portion buffer */
4707 ubuf = malloc(ulen + 1);
4709 result = CURLE_OUT_OF_MEMORY;
4712 /* Allocate the password portion buffer */
4713 if(!result && passwdp && plen) {
4714 pbuf = malloc(plen + 1);
4716 Curl_safefree(ubuf);
4717 result = CURLE_OUT_OF_MEMORY;
4721 /* Allocate the options portion buffer */
4722 if(!result && optionsp && olen) {
4723 obuf = malloc(olen + 1);
4725 Curl_safefree(pbuf);
4726 Curl_safefree(ubuf);
4727 result = CURLE_OUT_OF_MEMORY;
4732 /* Store the user portion if necessary */
4734 memcpy(ubuf, login, ulen);
4736 Curl_safefree(*userp);
4740 /* Store the password portion if necessary */
4742 memcpy(pbuf, psep + 1, plen);
4744 Curl_safefree(*passwdp);
4748 /* Store the options portion if necessary */
4750 memcpy(obuf, osep + 1, olen);
4752 Curl_safefree(*optionsp);
4760 /*************************************************************
4761 * Figure out the remote port number and fix it in the URL
4763 * No matter if we use a proxy or not, we have to figure out the remote
4764 * port number of various reasons.
4766 * To be able to detect port number flawlessly, we must not confuse them
4767 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4769 * The conn->host.name is currently [user:passwd@]host[:port] where host
4770 * could be a hostname, IPv4 address or IPv6 address.
4772 * The port number embedded in the URL is replaced, if necessary.
4773 *************************************************************/
4774 static CURLcode parse_remote_port(struct SessionHandle *data,
4775 struct connectdata *conn)
4780 /* Note that at this point, the IPv6 address cannot contain any scope
4781 suffix as that has already been removed in the parseurlandfillconn()
4783 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4785 (']' == endbracket)) {
4786 /* this is a RFC2732-style specified IP-address */
4787 conn->bits.ipv6_ip = TRUE;
4789 conn->host.name++; /* skip over the starting bracket */
4790 portptr = strchr(conn->host.name, ']');
4792 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4794 portptr = NULL; /* no port number available */
4799 struct in6_addr in6;
4800 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4801 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4803 failf(data, "IPv6 numerical address used in URL without brackets");
4804 return CURLE_URL_MALFORMAT;
4808 portptr = strrchr(conn->host.name, ':');
4811 if(data->set.use_port && data->state.allow_port) {
4812 /* if set, we use this and ignore the port possibly given in the URL */
4813 conn->remote_port = (unsigned short)data->set.use_port;
4815 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4816 number - since the port number is to be ignored! */
4817 if(conn->bits.httpproxy) {
4818 /* we need to create new URL with the new port number */
4822 if(conn->bits.type_set)
4823 snprintf(type, sizeof(type), ";type=%c",
4824 data->set.prefer_ascii?'A':
4825 (data->set.ftp_list_only?'D':'I'));
4828 * This synthesized URL isn't always right--suffixes like ;type=A are
4829 * stripped off. It would be better to work directly from the original
4830 * URL and simply replace the port part of it.
4832 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4833 conn->bits.ipv6_ip?"[":"", conn->host.name,
4834 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4835 data->state.slash_removed?"/":"", data->state.path,
4838 return CURLE_OUT_OF_MEMORY;
4840 if(data->change.url_alloc) {
4841 Curl_safefree(data->change.url);
4842 data->change.url_alloc = FALSE;
4845 data->change.url = url;
4846 data->change.url_alloc = TRUE;
4850 /* no CURLOPT_PORT given, extract the one from the URL */
4855 port=strtol(portptr+1, &rest, 10); /* Port number must be decimal */
4857 if((port < 0) || (port > 0xffff)) {
4858 /* Single unix standard says port numbers are 16 bits long */
4859 failf(data, "Port number out of range");
4860 return CURLE_URL_MALFORMAT;
4863 else if(rest != &portptr[1]) {
4864 *portptr = '\0'; /* cut off the name there */
4865 conn->remote_port = curlx_ultous(port);
4868 /* Browser behavior adaptation. If there's a colon with no digits after,
4869 just cut off the name there which makes us ignore the colon and just
4870 use the default port. Firefox and Chrome both do that. */
4877 * Override the login details from the URL with that in the CURLOPT_USERPWD
4878 * option or a .netrc file, if applicable.
4880 static CURLcode override_login(struct SessionHandle *data,
4881 struct connectdata *conn,
4882 char **userp, char **passwdp, char **optionsp)
4884 if(data->set.str[STRING_USERNAME]) {
4886 *userp = strdup(data->set.str[STRING_USERNAME]);
4888 return CURLE_OUT_OF_MEMORY;
4891 if(data->set.str[STRING_PASSWORD]) {
4893 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4895 return CURLE_OUT_OF_MEMORY;
4898 if(data->set.str[STRING_OPTIONS]) {
4900 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4902 return CURLE_OUT_OF_MEMORY;
4905 conn->bits.netrc = FALSE;
4906 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4907 int ret = Curl_parsenetrc(conn->host.name,
4909 data->set.str[STRING_NETRC_FILE]);
4911 infof(data, "Couldn't find host %s in the "
4912 DOT_CHAR "netrc file; using defaults\n",
4916 return CURLE_OUT_OF_MEMORY;
4919 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4920 file, so that it is safe to use even if we followed a Location: to a
4921 different host or similar. */
4922 conn->bits.netrc = TRUE;
4924 conn->bits.user_passwd = TRUE; /* enable user+password */
4932 * Set the login details so they're available in the connection
4934 static CURLcode set_login(struct connectdata *conn,
4935 const char *user, const char *passwd,
4936 const char *options)
4938 CURLcode result = CURLE_OK;
4940 /* If our protocol needs a password and we have none, use the defaults */
4941 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4942 /* Store the default user */
4943 conn->user = strdup(CURL_DEFAULT_USER);
4945 /* Store the default password */
4947 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4949 conn->passwd = NULL;
4951 /* This is the default password, so DON'T set conn->bits.user_passwd */
4954 /* Store the user, zero-length if not set */
4955 conn->user = strdup(user);
4957 /* Store the password (only if user is present), zero-length if not set */
4959 conn->passwd = strdup(passwd);
4961 conn->passwd = NULL;
4964 if(!conn->user || !conn->passwd)
4965 result = CURLE_OUT_OF_MEMORY;
4967 /* Store the options, null if not set */
4968 if(!result && options[0]) {
4969 conn->options = strdup(options);
4972 result = CURLE_OUT_OF_MEMORY;
4978 /*************************************************************
4979 * Resolve the address of the server or proxy
4980 *************************************************************/
4981 static CURLcode resolve_server(struct SessionHandle *data,
4982 struct connectdata *conn,
4985 CURLcode result=CURLE_OK;
4986 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4988 /*************************************************************
4989 * Resolve the name of the server or proxy
4990 *************************************************************/
4991 if(conn->bits.reuse)
4992 /* We're reusing the connection - no need to resolve anything, and
4993 fix_hostname() was called already in create_conn() for the re-use
4998 /* this is a fresh connect */
5000 struct Curl_dns_entry *hostaddr;
5002 /* set a pointer to the hostname we display */
5003 fix_hostname(data, conn, &conn->host);
5005 if(!conn->proxy.name || !*conn->proxy.name) {
5006 /* If not connecting via a proxy, extract the port from the URL, if it is
5007 * there, thus overriding any defaults that might have been set above. */
5008 conn->port = conn->remote_port; /* it is the same port */
5010 /* Resolve target host right on */
5011 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
5012 &hostaddr, timeout_ms);
5013 if(rc == CURLRESOLV_PENDING)
5016 else if(rc == CURLRESOLV_TIMEDOUT)
5017 result = CURLE_OPERATION_TIMEDOUT;
5019 else if(!hostaddr) {
5020 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
5021 result = CURLE_COULDNT_RESOLVE_HOST;
5022 /* don't return yet, we need to clean up the timeout first */
5026 /* This is a proxy that hasn't been resolved yet. */
5028 /* IDN-fix the proxy name */
5029 fix_hostname(data, conn, &conn->proxy);
5032 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
5033 &hostaddr, timeout_ms);
5035 if(rc == CURLRESOLV_PENDING)
5038 else if(rc == CURLRESOLV_TIMEDOUT)
5039 result = CURLE_OPERATION_TIMEDOUT;
5041 else if(!hostaddr) {
5042 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
5043 result = CURLE_COULDNT_RESOLVE_PROXY;
5044 /* don't return yet, we need to clean up the timeout first */
5047 DEBUGASSERT(conn->dns_entry == NULL);
5048 conn->dns_entry = hostaddr;
5055 * Cleanup the connection just allocated before we can move along and use the
5056 * previously existing one. All relevant data is copied over and old_conn is
5057 * ready for freeing once this function returns.
5059 static void reuse_conn(struct connectdata *old_conn,
5060 struct connectdata *conn)
5062 if(old_conn->proxy.rawalloc)
5063 free(old_conn->proxy.rawalloc);
5065 /* free the SSL config struct from this connection struct as this was
5066 allocated in vain and is targeted for destruction */
5067 Curl_free_ssl_config(&old_conn->ssl_config);
5069 conn->data = old_conn->data;
5071 /* get the user+password information from the old_conn struct since it may
5072 * be new for this request even when we re-use an existing connection */
5073 conn->bits.user_passwd = old_conn->bits.user_passwd;
5074 if(conn->bits.user_passwd) {
5075 /* use the new user name and password though */
5076 Curl_safefree(conn->user);
5077 Curl_safefree(conn->passwd);
5078 conn->user = old_conn->user;
5079 conn->passwd = old_conn->passwd;
5080 old_conn->user = NULL;
5081 old_conn->passwd = NULL;
5084 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
5085 if(conn->bits.proxy_user_passwd) {
5086 /* use the new proxy user name and proxy password though */
5087 Curl_safefree(conn->proxyuser);
5088 Curl_safefree(conn->proxypasswd);
5089 conn->proxyuser = old_conn->proxyuser;
5090 conn->proxypasswd = old_conn->proxypasswd;
5091 old_conn->proxyuser = NULL;
5092 old_conn->proxypasswd = NULL;
5095 /* host can change, when doing keepalive with a proxy or if the case is
5096 different this time etc */
5097 Curl_safefree(conn->host.rawalloc);
5098 conn->host=old_conn->host;
5100 /* persist connection info in session handle */
5101 Curl_persistconninfo(conn);
5104 conn->bits.reuse = TRUE; /* yes, we're re-using here */
5106 Curl_safefree(old_conn->user);
5107 Curl_safefree(old_conn->passwd);
5108 Curl_safefree(old_conn->proxyuser);
5109 Curl_safefree(old_conn->proxypasswd);
5110 Curl_safefree(old_conn->localdev);
5112 Curl_llist_destroy(old_conn->send_pipe, NULL);
5113 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5115 old_conn->send_pipe = NULL;
5116 old_conn->recv_pipe = NULL;
5118 Curl_safefree(old_conn->master_buffer);
5122 * create_conn() sets up a new connectdata struct, or re-uses an already
5123 * existing one, and resolves host name.
5125 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5126 * response will be coming asynchronously. If *async is FALSE, the name is
5129 * @param data The sessionhandle pointer
5130 * @param in_connect is set to the next connection data pointer
5131 * @param async is set TRUE when an async DNS resolution is pending
5132 * @see Curl_setup_conn()
5134 * *NOTE* this function assigns the conn->data pointer!
5137 static CURLcode create_conn(struct SessionHandle *data,
5138 struct connectdata **in_connect,
5141 CURLcode result = CURLE_OK;
5142 struct connectdata *conn;
5143 struct connectdata *conn_temp = NULL;
5146 char *passwd = NULL;
5147 char *options = NULL;
5150 bool prot_missing = FALSE;
5151 bool no_connections_available = FALSE;
5153 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5154 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5158 /*************************************************************
5160 *************************************************************/
5162 if(!data->change.url) {
5163 result = CURLE_URL_MALFORMAT;
5167 /* First, split up the current URL in parts so that we can use the
5168 parts for checking against the already present connections. In order
5169 to not have to modify everything at once, we allocate a temporary
5170 connection data struct and fill in for comparison purposes. */
5171 conn = allocate_conn(data);
5174 result = CURLE_OUT_OF_MEMORY;
5178 /* We must set the return variable as soon as possible, so that our
5179 parent can cleanup any possible allocs we may have done before
5183 /* This initing continues below, see the comment "Continue connectdata
5184 * initialization here" */
5186 /***********************************************************
5187 * We need to allocate memory to store the path in. We get the size of the
5188 * full URL to be sure, and we need to make it at least 256 bytes since
5189 * other parts of the code will rely on this fact
5190 ***********************************************************/
5191 #define LEAST_PATH_ALLOC 256
5192 urllen=strlen(data->change.url);
5193 if(urllen < LEAST_PATH_ALLOC)
5194 urllen=LEAST_PATH_ALLOC;
5197 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5198 * 1 - an extra terminating zero
5199 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5202 Curl_safefree(data->state.pathbuffer);
5203 data->state.path = NULL;
5205 data->state.pathbuffer = malloc(urllen+2);
5206 if(NULL == data->state.pathbuffer) {
5207 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5210 data->state.path = data->state.pathbuffer;
5212 conn->host.rawalloc = malloc(urllen+2);
5213 if(NULL == conn->host.rawalloc) {
5214 Curl_safefree(data->state.pathbuffer);
5215 data->state.path = NULL;
5216 result = CURLE_OUT_OF_MEMORY;
5220 conn->host.name = conn->host.rawalloc;
5221 conn->host.name[0] = 0;
5224 passwd = strdup("");
5225 options = strdup("");
5226 if(!user || !passwd || !options) {
5227 result = CURLE_OUT_OF_MEMORY;
5231 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5233 if(result != CURLE_OK)
5236 /*************************************************************
5237 * No protocol part in URL was used, add it!
5238 *************************************************************/
5240 /* We're guessing prefixes here and if we're told to use a proxy or if
5241 we're gonna follow a Location: later or... then we need the protocol
5242 part added so that we have a valid URL. */
5245 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5248 result = CURLE_OUT_OF_MEMORY;
5252 if(data->change.url_alloc) {
5253 Curl_safefree(data->change.url);
5254 data->change.url_alloc = FALSE;
5257 data->change.url = reurl;
5258 data->change.url_alloc = TRUE; /* free this later */
5261 /*************************************************************
5262 * If the protocol can't handle url query strings, then cut
5263 * off the unhandable part
5264 *************************************************************/
5265 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5266 char *path_q_sep = strchr(conn->data->state.path, '?');
5268 /* according to rfc3986, allow the query (?foo=bar)
5269 also on protocols that can't handle it.
5271 cut the string-part after '?'
5274 /* terminate the string */
5279 if(data->set.str[STRING_BEARER]) {
5280 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5281 if(!conn->xoauth2_bearer) {
5282 result = CURLE_OUT_OF_MEMORY;
5287 #ifndef CURL_DISABLE_PROXY
5288 /*************************************************************
5289 * Extract the user and password from the authentication string
5290 *************************************************************/
5291 if(conn->bits.proxy_user_passwd) {
5292 result = parse_proxy_auth(data, conn);
5293 if(result != CURLE_OK)
5297 /*************************************************************
5298 * Detect what (if any) proxy to use
5299 *************************************************************/
5300 if(data->set.str[STRING_PROXY]) {
5301 proxy = strdup(data->set.str[STRING_PROXY]);
5302 /* if global proxy is set, this is it */
5304 failf(data, "memory shortage");
5305 result = CURLE_OUT_OF_MEMORY;
5310 if(data->set.str[STRING_NOPROXY] &&
5311 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5313 free(proxy); /* proxy is in exception list */
5318 proxy = detect_proxy(conn);
5320 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5321 free(proxy); /* Don't bother with an empty proxy string or if the
5322 protocol doesn't work with network */
5326 /***********************************************************************
5327 * If this is supposed to use a proxy, we need to figure out the proxy host
5328 * name, proxy type and port number, so that we can re-use an existing
5329 * connection that may exist registered to the same proxy host.
5330 ***********************************************************************/
5332 result = parse_proxy(data, conn, proxy);
5334 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5339 if((conn->proxytype == CURLPROXY_HTTP) ||
5340 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5341 #ifdef CURL_DISABLE_HTTP
5342 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5343 result = CURLE_UNSUPPORTED_PROTOCOL;
5346 /* force this connection's protocol to become HTTP if not already
5347 compatible - if it isn't tunneling through */
5348 if(!(conn->handler->protocol & PROTO_FAMILY_HTTP) &&
5349 !conn->bits.tunnel_proxy)
5350 conn->handler = &Curl_handler_http;
5352 conn->bits.httpproxy = TRUE;
5356 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5357 conn->bits.proxy = TRUE;
5360 /* we aren't using the proxy after all... */
5361 conn->bits.proxy = FALSE;
5362 conn->bits.httpproxy = FALSE;
5363 conn->bits.proxy_user_passwd = FALSE;
5364 conn->bits.tunnel_proxy = FALSE;
5367 #endif /* CURL_DISABLE_PROXY */
5369 /*************************************************************
5370 * If the protocol is using SSL and HTTP proxy is used, we set
5371 * the tunnel_proxy bit.
5372 *************************************************************/
5373 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5374 conn->bits.tunnel_proxy = TRUE;
5376 /*************************************************************
5377 * Figure out the remote port number and fix it in the URL
5378 *************************************************************/
5379 result = parse_remote_port(data, conn);
5380 if(result != CURLE_OK)
5383 /* Check for overridden login details and set them accordingly so they
5384 they are known when protocol->setup_connection is called! */
5385 result = override_login(data, conn, &user, &passwd, &options);
5386 if(result != CURLE_OK)
5388 result = set_login(conn, user, passwd, options);
5389 if(result != CURLE_OK)
5392 /*************************************************************
5393 * Setup internals depending on protocol. Needs to be done after
5394 * we figured out what/if proxy to use.
5395 *************************************************************/
5396 result = setup_connection_internals(conn);
5397 if(result != CURLE_OK)
5400 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5401 conn->send[FIRSTSOCKET] = Curl_send_plain;
5402 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5403 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5405 /***********************************************************************
5406 * file: is a special case in that it doesn't need a network connection
5407 ***********************************************************************/
5408 #ifndef CURL_DISABLE_FILE
5409 if(conn->handler->flags & PROTOPT_NONETWORK) {
5411 /* this is supposed to be the connect function so we better at least check
5412 that the file is present here! */
5413 DEBUGASSERT(conn->handler->connect_it);
5414 result = conn->handler->connect_it(conn, &done);
5416 /* Setup a "faked" transfer that'll do nothing */
5417 if(CURLE_OK == result) {
5419 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5421 ConnectionStore(data, conn);
5424 * Setup whatever necessary for a resumed transfer
5426 result = setup_range(data);
5428 DEBUGASSERT(conn->handler->done);
5429 /* we ignore the return code for the protocol-specific DONE */
5430 (void)conn->handler->done(conn, result, FALSE);
5434 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5435 -1, NULL); /* no upload */
5438 /* since we skip do_init() */
5445 /* Get a cloned copy of the SSL config situation stored in the
5446 connection struct. But to get this going nicely, we must first make
5447 sure that the strings in the master copy are pointing to the correct
5448 strings in the session handle strings array!
5450 Keep in mind that the pointers in the master copy are pointing to strings
5451 that will be freed as part of the SessionHandle struct, but all cloned
5452 copies will be separately allocated.
5454 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5455 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5456 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5457 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5458 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5459 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5460 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5462 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5463 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5466 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5467 result = CURLE_OUT_OF_MEMORY;
5471 /*************************************************************
5472 * Check the current list of connections to see if we can
5473 * re-use an already existing one or if we have to create a
5475 *************************************************************/
5477 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5478 we only acknowledge this option if this is not a re-used connection
5479 already (which happens due to follow-location or during a HTTP
5480 authentication phase). */
5481 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5484 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5486 /* If we found a reusable connection, we may still want to
5487 open a new connection if we are pipelining. */
5488 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5489 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5491 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5492 conn_temp->connection_id, pipelen);
5494 if(conn_temp->bundle->num_connections < max_host_connections &&
5495 data->state.conn_cache->num_connections < max_total_connections) {
5496 /* We want a new connection anyway */
5499 infof(data, "We can reuse, but we want a new connection anyway\n");
5506 * We already have a connection for this, we got the former connection
5507 * in the conn_temp variable and thus we need to cleanup the one we
5508 * just allocated before we can move along and use the previously
5511 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5512 handle in a multi stack may nick it */
5513 reuse_conn(conn, conn_temp);
5514 free(conn); /* we don't need this anymore */
5518 /* set a pointer to the hostname we display */
5519 fix_hostname(data, conn, &conn->host);
5521 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5522 conn->connection_id,
5523 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5526 /* We have decided that we want a new connection. However, we may not
5527 be able to do that if we have reached the limit of how many
5528 connections we are allowed to open. */
5529 struct connectbundle *bundle;
5531 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5533 if(max_host_connections > 0 && bundle &&
5534 (bundle->num_connections >= max_host_connections)) {
5535 struct connectdata *conn_candidate;
5537 /* The bundle is full. Let's see if we can kill a connection. */
5538 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5540 if(conn_candidate) {
5541 /* Set the connection's owner correctly, then kill it */
5542 conn_candidate->data = data;
5543 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5546 no_connections_available = TRUE;
5549 if(max_total_connections > 0 &&
5550 (data->state.conn_cache->num_connections >= max_total_connections)) {
5551 struct connectdata *conn_candidate;
5553 /* The cache is full. Let's see if we can kill a connection. */
5554 conn_candidate = find_oldest_idle_connection(data);
5556 if(conn_candidate) {
5557 /* Set the connection's owner correctly, then kill it */
5558 conn_candidate->data = data;
5559 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5562 no_connections_available = TRUE;
5566 if(no_connections_available) {
5567 infof(data, "No connections available.\n");
5572 result = CURLE_NO_CONNECTION_AVAILABLE;
5577 * This is a brand new connection, so let's store it in the connection
5580 ConnectionStore(data, conn);
5584 /* Mark the connection as used */
5587 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5591 * Setup whatever necessary for a resumed transfer
5593 result = setup_range(data);
5597 /* Continue connectdata initialization here. */
5600 * Inherit the proper values from the urldata struct AFTER we have arranged
5601 * the persistent connection stuff
5603 conn->fread_func = data->set.fread_func;
5604 conn->fread_in = data->set.in;
5605 conn->seek_func = data->set.seek_func;
5606 conn->seek_client = data->set.seek_client;
5608 /*************************************************************
5609 * Resolve the address of the server or proxy
5610 *************************************************************/
5611 result = resolve_server(data, conn, async);
5615 Curl_safefree(options);
5616 Curl_safefree(passwd);
5617 Curl_safefree(user);
5618 Curl_safefree(proxy);
5622 /* Curl_setup_conn() is called after the name resolve initiated in
5623 * create_conn() is all done.
5625 * Curl_setup_conn() also handles reused connections
5627 * conn->data MUST already have been setup fine (in create_conn)
5630 CURLcode Curl_setup_conn(struct connectdata *conn,
5631 bool *protocol_done)
5633 CURLcode result = CURLE_OK;
5634 struct SessionHandle *data = conn->data;
5636 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5638 if(conn->handler->flags & PROTOPT_NONETWORK) {
5639 /* nothing to setup when not using a network */
5640 *protocol_done = TRUE;
5643 *protocol_done = FALSE; /* default to not done */
5645 /* set proxy_connect_closed to false unconditionally already here since it
5646 is used strictly to provide extra information to a parent function in the
5647 case of proxy CONNECT failures and we must make sure we don't have it
5648 lingering set from a previous invoke */
5649 conn->bits.proxy_connect_closed = FALSE;
5652 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5653 * basically anything through a http proxy we can't limit this based on
5656 if(data->set.str[STRING_USERAGENT]) {
5657 Curl_safefree(conn->allocptr.uagent);
5658 conn->allocptr.uagent =
5659 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5660 if(!conn->allocptr.uagent)
5661 return CURLE_OUT_OF_MEMORY;
5664 data->req.headerbytecount = 0;
5666 #ifdef CURL_DO_LINEEND_CONV
5667 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5668 #endif /* CURL_DO_LINEEND_CONV */
5670 /* set start time here for timeout purposes in the connect procedure, it
5671 is later set again for the progress meter purpose */
5672 conn->now = Curl_tvnow();
5674 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5675 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5676 result = Curl_connecthost(conn, conn->dns_entry);
5681 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5682 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5683 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5684 *protocol_done = TRUE;
5685 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5686 Curl_verboseconnect(conn);
5689 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5690 set this here perhaps a second time */
5694 * This check is quite a hack. We're calling _fsetmode to fix the problem
5695 * with fwrite converting newline characters (you get mangled text files,
5696 * and corrupted binary files when you download to stdout and redirect it to
5700 if((data->set.out)->_handle == NULL) {
5701 _fsetmode(stdout, "b");
5708 CURLcode Curl_connect(struct SessionHandle *data,
5709 struct connectdata **in_connect,
5711 bool *protocol_done)
5715 *asyncp = FALSE; /* assume synchronous resolves by default */
5717 /* call the stuff that needs to be called */
5718 code = create_conn(data, in_connect, asyncp);
5720 if(CURLE_OK == code) {
5722 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5724 *protocol_done = TRUE;
5726 /* DNS resolution is done: that's either because this is a reused
5727 connection, in which case DNS was unnecessary, or because DNS
5728 really did finish already (synch resolver/fast async resolve) */
5729 code = Curl_setup_conn(*in_connect, protocol_done);
5733 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5738 if(code && *in_connect) {
5739 /* We're not allowed to return failure with memory left allocated
5740 in the connectdata struct, free those here */
5741 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5742 *in_connect = NULL; /* return a NULL */
5748 CURLcode Curl_done(struct connectdata **connp,
5749 CURLcode status, /* an error if this is called after an
5750 error was detected */
5754 struct connectdata *conn;
5755 struct SessionHandle *data;
5757 DEBUGASSERT(*connp);
5763 /* Stop if Curl_done() has already been called */
5766 Curl_getoff_all_pipelines(data, conn);
5768 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5769 !data->set.reuse_forbid &&
5771 /* Stop if pipeline is not empty and we do not have to close
5775 conn->bits.done = TRUE; /* called just now! */
5777 /* Cleanup possible redirect junk */
5778 if(data->req.newurl) {
5779 free(data->req.newurl);
5780 data->req.newurl = NULL;
5782 if(data->req.location) {
5783 free(data->req.location);
5784 data->req.location = NULL;
5787 Curl_resolver_cancel(conn);
5789 if(conn->dns_entry) {
5790 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5791 conn->dns_entry = NULL;
5795 case CURLE_ABORTED_BY_CALLBACK:
5796 case CURLE_READ_ERROR:
5797 case CURLE_WRITE_ERROR:
5798 /* When we're aborted due to a callback return code it basically have to
5799 be counted as premature as there is trouble ahead if we don't. We have
5800 many callbacks and protocols work differently, we could potentially do
5801 this more fine-grained in the future. */
5807 /* this calls the protocol-specific function pointer previously set */
5808 if(conn->handler->done)
5809 result = conn->handler->done(conn, status, premature);
5813 if(Curl_pgrsDone(conn) && !result)
5814 result = CURLE_ABORTED_BY_CALLBACK;
5816 /* if the transfer was completed in a paused state there can be buffered
5817 data left to write and then kill */
5818 if(data->state.tempwrite) {
5819 free(data->state.tempwrite);
5820 data->state.tempwrite = NULL;
5823 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5824 forced us to close this no matter what we think.
5826 if conn->bits.close is TRUE, it means that the connection should be
5827 closed in spite of all our efforts to be nice, due to protocol
5828 restrictions in our or the server's end
5830 if premature is TRUE, it means this connection was said to be DONE before
5831 the entire request operation is complete and thus we can't know in what
5832 state it is for re-using, so we're forced to close it. In a perfect world
5833 we can add code that keep track of if we really must close it here or not,
5834 but currently we have no such detail knowledge.
5836 if(data->set.reuse_forbid || conn->bits.close || premature) {
5837 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5839 /* If we had an error already, make sure we return that one. But
5840 if we got a new error, return that. */
5845 /* the connection is no longer in use */
5846 if(ConnectionDone(data, conn)) {
5847 /* remember the most recently used connection */
5848 data->state.lastconnect = conn;
5850 infof(data, "Connection #%ld to host %s left intact\n",
5851 conn->connection_id,
5852 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5855 data->state.lastconnect = NULL;
5858 *connp = NULL; /* to make the caller of this function better detect that
5859 this was either closed or handed over to the connection
5860 cache here, and therefore cannot be used from this point on
5862 Curl_free_request_state(data);
5868 * do_init() inits the readwrite session. This is inited each time (in the DO
5869 * function before the protocol-specific DO functions are invoked) for a
5870 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5871 * nothing in here depends on stuff that are setup dynamically for the
5875 static CURLcode do_init(struct connectdata *conn)
5877 struct SessionHandle *data = conn->data;
5878 struct SingleRequest *k = &data->req;
5880 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5881 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5882 data->state.expect100header = FALSE;
5884 if(data->set.opt_no_body)
5885 /* in HTTP lingo, no body means using the HEAD request... */
5886 data->set.httpreq = HTTPREQ_HEAD;
5887 else if(HTTPREQ_HEAD == data->set.httpreq)
5888 /* ... but if unset there really is no perfect method that is the
5889 "opposite" of HEAD but in reality most people probably think GET
5890 then. The important thing is that we can't let it remain HEAD if the
5891 opt_no_body is set FALSE since then we'll behave wrong when getting
5893 data->set.httpreq = HTTPREQ_GET;
5895 k->start = Curl_tvnow(); /* start time */
5896 k->now = k->start; /* current time is now */
5897 k->header = TRUE; /* assume header */
5901 k->buf = data->state.buffer;
5902 k->uploadbuf = data->state.uploadbuffer;
5903 k->hbufp = data->state.headerbuff;
5904 k->ignorebody=FALSE;
5906 Curl_speedinit(data);
5908 Curl_pgrsSetUploadCounter(data, 0);
5909 Curl_pgrsSetDownloadCounter(data, 0);
5915 * do_complete is called when the DO actions are complete.
5917 * We init chunking and trailer bits to their default values here immediately
5918 * before receiving any header data for the current request in the pipeline.
5920 static void do_complete(struct connectdata *conn)
5922 conn->data->req.chunk=FALSE;
5923 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5924 conn->sockfd:conn->writesockfd)+1;
5925 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5928 CURLcode Curl_do(struct connectdata **connp, bool *done)
5930 CURLcode result=CURLE_OK;
5931 struct connectdata *conn = *connp;
5932 struct SessionHandle *data = conn->data;
5934 if(conn->handler->do_it) {
5935 /* generic protocol-specific function pointer set in curl_connect() */
5936 result = conn->handler->do_it(conn, done);
5938 /* This was formerly done in transfer.c, but we better do it here */
5939 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5941 * If the connection is using an easy handle, call reconnect
5942 * to re-establish the connection. Otherwise, let the multi logic
5943 * figure out how to re-establish the connection.
5946 result = Curl_reconnect_request(connp);
5948 if(result == CURLE_OK) {
5949 /* ... finally back to actually retry the DO phase */
5950 conn = *connp; /* re-assign conn since Curl_reconnect_request
5951 creates a new connection */
5952 result = conn->handler->do_it(conn, done);
5959 if((result == CURLE_OK) && *done)
5960 /* do_complete must be called after the protocol-specific DO function */
5967 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5968 * second stage DO state which (wrongly) was introduced to support FTP's
5969 * second connection.
5971 * TODO: A future libcurl should be able to work away this state.
5973 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5974 * DOING state there's more work to do!
5977 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5979 CURLcode result=CURLE_OK;
5983 if(conn->handler->do_more)
5984 result = conn->handler->do_more(conn, complete);
5986 if(!result && (*complete == 1))
5987 /* do_complete must be called after the protocol-specific DO function */