1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2013, 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 */
92 #include "content_encoding.h"
93 #include "http_digest.h"
94 #include "http_negotiate.h"
98 #include "speedcheck.h"
100 #include "warnless.h"
101 #include "non-ascii.h"
102 #include "inet_pton.h"
104 /* And now for the protocols */
111 #include "curl_ldap.h"
116 #include "inet_ntop.h"
117 #include "curl_ntlm.h"
118 #include "curl_ntlm_wb.h"
120 #include "curl_rtmp.h"
122 #include "http_proxy.h"
124 #include "conncache.h"
125 #include "multihandle.h"
126 #include "pipeline.h"
129 #define _MPRINTF_REPLACE /* use our functions only */
130 #include <curl/mprintf.h>
132 #include "curl_memory.h"
133 /* The last #include file should be: */
134 #include "memdebug.h"
136 /* Local static prototypes */
137 static struct connectdata *
138 find_oldest_idle_connection(struct SessionHandle *data);
139 static struct connectdata *
140 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
141 struct connectbundle *bundle);
142 static void conn_free(struct connectdata *conn);
143 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke);
144 static CURLcode do_init(struct connectdata *conn);
145 static CURLcode parse_url_login(struct SessionHandle *data,
146 struct connectdata *conn,
147 char **userptr, char **passwdptr,
149 static CURLcode parse_login_details(const char *login, const size_t len,
150 char **userptr, char **passwdptr,
156 static const struct Curl_handler * const protocols[] = {
158 #ifndef CURL_DISABLE_HTTP
162 #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
166 #ifndef CURL_DISABLE_FTP
170 #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
174 #ifndef CURL_DISABLE_TELNET
175 &Curl_handler_telnet,
178 #ifndef CURL_DISABLE_DICT
182 #ifndef CURL_DISABLE_LDAP
184 #if !defined(CURL_DISABLE_LDAPS) && \
185 ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
186 (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
191 #ifndef CURL_DISABLE_FILE
195 #ifndef CURL_DISABLE_TFTP
204 #ifndef CURL_DISABLE_IMAP
211 #ifndef CURL_DISABLE_POP3
218 #ifndef CURL_DISABLE_SMTP
225 #ifndef CURL_DISABLE_RTSP
229 #ifndef CURL_DISABLE_GOPHER
230 &Curl_handler_gopher,
237 &Curl_handler_rtmpte,
239 &Curl_handler_rtmpts,
242 (struct Curl_handler *) NULL
246 * Dummy handler for undefined protocol schemes.
249 static const struct Curl_handler Curl_handler_dummy = {
250 "<no protocol>", /* scheme */
251 ZERO_NULL, /* setup_connection */
252 ZERO_NULL, /* do_it */
253 ZERO_NULL, /* done */
254 ZERO_NULL, /* do_more */
255 ZERO_NULL, /* connect_it */
256 ZERO_NULL, /* connecting */
257 ZERO_NULL, /* doing */
258 ZERO_NULL, /* proto_getsock */
259 ZERO_NULL, /* doing_getsock */
260 ZERO_NULL, /* domore_getsock */
261 ZERO_NULL, /* perform_getsock */
262 ZERO_NULL, /* disconnect */
263 ZERO_NULL, /* readwrite */
266 PROTOPT_NONE /* flags */
269 void Curl_freeset(struct SessionHandle *data)
271 /* Free all dynamic strings stored in the data->set substructure. */
273 for(i=(enum dupstring)0; i < STRING_LAST; i++)
274 Curl_safefree(data->set.str[i]);
276 if(data->change.referer_alloc) {
277 Curl_safefree(data->change.referer);
278 data->change.referer_alloc = FALSE;
280 data->change.referer = NULL;
283 static CURLcode setstropt(char **charp, char *s)
285 /* Release the previous storage at `charp' and replace by a dynamic storage
286 copy of `s'. Return CURLE_OK or CURLE_OUT_OF_MEMORY. */
288 Curl_safefree(*charp);
294 return CURLE_OUT_OF_MEMORY;
302 static CURLcode setstropt_userpwd(char *option, char **userp, char **passwdp,
305 CURLcode result = CURLE_OK;
308 char *options = NULL;
310 /* Parse the login details if specified. It not then we treat NULL as a hint
311 to clear the existing data */
313 result = parse_login_details(option, strlen(option),
314 (userp ? &user : NULL),
315 (passwdp ? &passwd : NULL),
316 (optionsp ? &options : NULL));
320 /* Store the username part of option if required */
322 if(!user && option && option[0] == ':') {
323 /* Allocate an empty string instead of returning NULL as user name */
326 result = CURLE_OUT_OF_MEMORY;
329 Curl_safefree(*userp);
333 /* Store the password part of option if required */
335 Curl_safefree(*passwdp);
339 /* Store the options part of option if required */
341 Curl_safefree(*optionsp);
349 CURLcode Curl_dupset(struct SessionHandle *dst, struct SessionHandle *src)
351 CURLcode r = CURLE_OK;
354 /* Copy src->set into dst->set first, then deal with the strings
358 /* clear all string pointers first */
359 memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
361 /* duplicate all strings */
362 for(i=(enum dupstring)0; i< STRING_LAST; i++) {
363 r = setstropt(&dst->set.str[i], src->set.str[i]);
368 /* If a failure occurred, freeing has to be performed externally. */
373 * This is the internal function curl_easy_cleanup() calls. This should
374 * cleanup and free all resources associated with this sessionhandle.
376 * NOTE: if we ever add something that attempts to write to a socket or
377 * similar here, we must ignore SIGPIPE first. It is currently only done
378 * when curl_easy_perform() is invoked.
381 CURLcode Curl_close(struct SessionHandle *data)
383 struct Curl_multi *m;
388 Curl_expire(data, 0); /* shut off timers */
393 /* This handle is still part of a multi handle, take care of this first
394 and detach this handle from there. */
395 curl_multi_remove_handle(data->multi, data);
398 /* when curl_easy_perform() is used, it creates its own multi handle to
399 use and this is the one */
400 curl_multi_cleanup(data->multi_easy);
402 /* Destroy the timeout list that is held in the easy handle. It is
403 /normally/ done by curl_multi_remove_handle() but this is "just in
405 if(data->state.timeoutlist) {
406 Curl_llist_destroy(data->state.timeoutlist, NULL);
407 data->state.timeoutlist = NULL;
410 data->magic = 0; /* force a clear AFTER the possibly enforced removal from
411 the multi handle, since that function uses the magic
414 if(data->state.rangestringalloc)
415 free(data->state.range);
417 /* Free the pathbuffer */
418 Curl_safefree(data->state.pathbuffer);
419 data->state.path = NULL;
421 /* freed here just in case DONE wasn't called */
422 Curl_free_request_state(data);
424 /* Close down all open SSL info and sessions */
425 Curl_ssl_close_all(data);
426 Curl_safefree(data->state.first_host);
427 Curl_safefree(data->state.scratch);
428 Curl_ssl_free_certinfo(data);
430 if(data->change.referer_alloc) {
431 Curl_safefree(data->change.referer);
432 data->change.referer_alloc = FALSE;
434 data->change.referer = NULL;
436 if(data->change.url_alloc) {
437 Curl_safefree(data->change.url);
438 data->change.url_alloc = FALSE;
440 data->change.url = NULL;
442 Curl_safefree(data->state.headerbuff);
444 Curl_flush_cookies(data, 1);
446 Curl_digest_cleanup(data);
448 Curl_safefree(data->info.contenttype);
449 Curl_safefree(data->info.wouldredirect);
451 /* this destroys the channel and we cannot use it anymore after this */
452 Curl_resolver_cleanup(data->state.resolver);
454 Curl_convert_close(data);
456 /* No longer a dirty share, if it exists */
458 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
459 data->share->dirty--;
460 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
469 * Initialize the UserDefined fields within a SessionHandle.
470 * This may be safely called on a new or existing SessionHandle.
472 CURLcode Curl_init_userdefined(struct UserDefined *set)
474 CURLcode res = CURLE_OK;
476 set->out = stdout; /* default output to stdout */
477 set->in = stdin; /* default input from stdin */
478 set->err = stderr; /* default stderr to stderr */
480 /* use fwrite as default function to store output */
481 set->fwrite_func = (curl_write_callback)fwrite;
483 /* use fread as default function to read input */
484 set->fread_func = (curl_read_callback)fread;
485 set->is_fread_set = 0;
486 set->is_fwrite_set = 0;
488 set->seek_func = ZERO_NULL;
489 set->seek_client = ZERO_NULL;
491 /* conversion callbacks for non-ASCII hosts */
492 set->convfromnetwork = ZERO_NULL;
493 set->convtonetwork = ZERO_NULL;
494 set->convfromutf8 = ZERO_NULL;
496 set->infilesize = -1; /* we don't know any size */
497 set->postfieldsize = -1; /* unknown size */
498 set->maxredirs = -1; /* allow any amount by default */
500 set->httpreq = HTTPREQ_GET; /* Default HTTP request */
501 set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
502 set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
503 set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
504 set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
505 set->ftp_filemethod = FTPFILE_MULTICWD;
507 set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
509 /* Set the default size of the SSL session ID cache */
510 set->ssl.max_ssl_sessions = 5;
512 set->proxyport = CURL_DEFAULT_PROXY_PORT; /* from url.h */
513 set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
514 set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
515 set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
517 /* make libcurl quiet by default: */
518 set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
521 * libcurl 7.10 introduced SSL verification *by default*! This needs to be
522 * switched off unless wanted.
524 set->ssl.verifypeer = TRUE;
525 set->ssl.verifyhost = TRUE;
527 set->ssl.authtype = CURL_TLSAUTH_NONE;
529 set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
531 set->ssl.sessionid = TRUE; /* session ID caching enabled by default */
533 set->new_file_perms = 0644; /* Default permissions */
534 set->new_directory_perms = 0755; /* Default permissions */
536 /* for the *protocols fields we don't use the CURLPROTO_ALL convenience
537 define since we internally only use the lower 16 bits for the passed
538 in bitmask to not conflict with the private bits */
539 set->allowed_protocols = CURLPROTO_ALL;
540 set->redir_protocols =
541 CURLPROTO_ALL & ~(CURLPROTO_FILE|CURLPROTO_SCP); /* not FILE or SCP */
543 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
545 * disallow unprotected protection negotiation NEC reference implementation
546 * seem not to follow rfc1961 section 4.3/4.4
548 set->socks5_gssapi_nec = FALSE;
549 /* set default gssapi service name */
550 res = setstropt(&set->str[STRING_SOCKS5_GSSAPI_SERVICE],
551 (char *) CURL_DEFAULT_SOCKS5_GSSAPI_SERVICE);
556 /* This is our preferred CA cert bundle/path since install time */
557 #if defined(CURL_CA_BUNDLE)
558 res = setstropt(&set->str[STRING_SSL_CAFILE], (char *) CURL_CA_BUNDLE);
559 #elif defined(CURL_CA_PATH)
560 res = setstropt(&set->str[STRING_SSL_CAPATH], (char *) CURL_CA_PATH);
563 set->wildcardmatch = FALSE;
564 set->chunk_bgn = ZERO_NULL;
565 set->chunk_end = ZERO_NULL;
567 /* tcp keepalives are disabled by default, but provide reasonable values for
568 * the interval and idle times.
570 set->tcp_keepalive = FALSE;
571 set->tcp_keepintvl = 60;
572 set->tcp_keepidle = 60;
580 * @param curl is a pointer to a sessionhandle pointer that gets set by this
585 CURLcode Curl_open(struct SessionHandle **curl)
587 CURLcode res = CURLE_OK;
588 struct SessionHandle *data;
591 /* Very simple start-up: alloc the struct, init it with zeroes and return */
592 data = calloc(1, sizeof(struct SessionHandle));
594 /* this is a very serious error */
595 DEBUGF(fprintf(stderr, "Error: calloc of SessionHandle failed\n"));
596 return CURLE_OUT_OF_MEMORY;
599 data->magic = CURLEASY_MAGIC_NUMBER;
601 status = Curl_resolver_init(&data->state.resolver);
603 DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
608 /* We do some initial setup here, all those fields that can't be just 0 */
610 data->state.headerbuff = malloc(HEADERSIZE);
611 if(!data->state.headerbuff) {
612 DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
613 res = CURLE_OUT_OF_MEMORY;
616 res = Curl_init_userdefined(&data->set);
618 data->state.headersize=HEADERSIZE;
620 Curl_convert_init(data);
622 /* most recent connection is not yet defined */
623 data->state.lastconnect = NULL;
625 data->progress.flags |= PGRS_HIDE;
626 data->state.current_speed = -1; /* init to negative == impossible */
628 data->wildcard.state = CURLWC_INIT;
629 data->wildcard.filelist = NULL;
630 data->set.fnmatch = ZERO_NULL;
631 data->set.maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
635 Curl_resolver_cleanup(data->state.resolver);
636 if(data->state.headerbuff)
637 free(data->state.headerbuff);
648 CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
652 CURLcode result = CURLE_OK;
654 #ifndef CURL_DISABLE_HTTP
659 case CURLOPT_DNS_CACHE_TIMEOUT:
660 data->set.dns_cache_timeout = va_arg(param, long);
662 case CURLOPT_DNS_USE_GLOBAL_CACHE:
663 /* remember we want this enabled */
664 arg = va_arg(param, long);
665 data->set.global_dns_cache = (0 != arg)?TRUE:FALSE;
667 case CURLOPT_SSL_CIPHER_LIST:
668 /* set a list of cipher we want to use in the SSL connection */
669 result = setstropt(&data->set.str[STRING_SSL_CIPHER_LIST],
670 va_arg(param, char *));
673 case CURLOPT_RANDOM_FILE:
675 * This is the path name to a file that contains random data to seed
676 * the random SSL stuff with. The file is only used for reading.
678 result = setstropt(&data->set.str[STRING_SSL_RANDOM_FILE],
679 va_arg(param, char *));
681 case CURLOPT_EGDSOCKET:
683 * The Entropy Gathering Daemon socket pathname
685 result = setstropt(&data->set.str[STRING_SSL_EGDSOCKET],
686 va_arg(param, char *));
688 case CURLOPT_MAXCONNECTS:
690 * Set the absolute number of maximum simultaneous alive connection that
691 * libcurl is allowed to have.
693 data->set.maxconnects = va_arg(param, long);
695 case CURLOPT_FORBID_REUSE:
697 * When this transfer is done, it must not be left to be reused by a
698 * subsequent transfer but shall be closed immediately.
700 data->set.reuse_forbid = (0 != va_arg(param, long))?TRUE:FALSE;
702 case CURLOPT_FRESH_CONNECT:
704 * This transfer shall not use a previously cached connection but
705 * should be made with a fresh new connect!
707 data->set.reuse_fresh = (0 != va_arg(param, long))?TRUE:FALSE;
709 case CURLOPT_VERBOSE:
711 * Verbose means infof() calls that give a lot of information about
712 * the connection and transfer procedures as well as internal choices.
714 data->set.verbose = (0 != va_arg(param, long))?TRUE:FALSE;
718 * Set to include the header in the general data output stream.
720 data->set.include_header = (0 != va_arg(param, long))?TRUE:FALSE;
722 case CURLOPT_NOPROGRESS:
724 * Shut off the internal supported progress meter
726 data->set.hide_progress = (0 != va_arg(param, long))?TRUE:FALSE;
727 if(data->set.hide_progress)
728 data->progress.flags |= PGRS_HIDE;
730 data->progress.flags &= ~PGRS_HIDE;
734 * Do not include the body part in the output data stream.
736 data->set.opt_no_body = (0 != va_arg(param, long))?TRUE:FALSE;
738 case CURLOPT_FAILONERROR:
740 * Don't output the >=300 error code HTML-page, but instead only
743 data->set.http_fail_on_error = (0 != va_arg(param, long))?TRUE:FALSE;
748 * We want to sent data to the remote host. If this is HTTP, that equals
749 * using the PUT request.
751 data->set.upload = (0 != va_arg(param, long))?TRUE:FALSE;
752 if(data->set.upload) {
753 /* If this is HTTP, PUT is what's needed to "upload" */
754 data->set.httpreq = HTTPREQ_PUT;
755 data->set.opt_no_body = FALSE; /* this is implied */
758 /* In HTTP, the opposite of upload is GET (unless NOBODY is true as
759 then this can be changed to HEAD later on) */
760 data->set.httpreq = HTTPREQ_GET;
762 case CURLOPT_FILETIME:
764 * Try to get the file time of the remote document. The time will
765 * later (possibly) become available using curl_easy_getinfo().
767 data->set.get_filetime = (0 != va_arg(param, long))?TRUE:FALSE;
769 case CURLOPT_FTP_CREATE_MISSING_DIRS:
771 * An FTP option that modifies an upload to create missing directories on
774 switch(va_arg(param, long)) {
776 data->set.ftp_create_missing_dirs = 0;
779 data->set.ftp_create_missing_dirs = 1;
782 data->set.ftp_create_missing_dirs = 2;
785 /* reserve other values for future use */
786 result = CURLE_UNKNOWN_OPTION;
790 case CURLOPT_SERVER_RESPONSE_TIMEOUT:
792 * Option that specifies how quickly an server response must be obtained
793 * before it is considered failure. For pingpong protocols.
795 data->set.server_response_timeout = va_arg( param , long ) * 1000;
797 case CURLOPT_TFTP_BLKSIZE:
799 * TFTP option that specifies the block size to use for data transmission
801 data->set.tftp_blksize = va_arg(param, long);
803 case CURLOPT_DIRLISTONLY:
805 * An option that changes the command to one that asks for a list
806 * only, no file info details.
808 data->set.ftp_list_only = (0 != va_arg(param, long))?TRUE:FALSE;
812 * We want to upload and append to an existing file.
814 data->set.ftp_append = (0 != va_arg(param, long))?TRUE:FALSE;
816 case CURLOPT_FTP_FILEMETHOD:
818 * How do access files over FTP.
820 data->set.ftp_filemethod = (curl_ftpfile)va_arg(param, long);
824 * Parse the $HOME/.netrc file
826 data->set.use_netrc = (enum CURL_NETRC_OPTION)va_arg(param, long);
828 case CURLOPT_NETRC_FILE:
830 * Use this file instead of the $HOME/.netrc file
832 result = setstropt(&data->set.str[STRING_NETRC_FILE],
833 va_arg(param, char *));
835 case CURLOPT_TRANSFERTEXT:
837 * This option was previously named 'FTPASCII'. Renamed to work with
838 * more protocols than merely FTP.
840 * Transfer using ASCII (instead of BINARY).
842 data->set.prefer_ascii = (0 != va_arg(param, long))?TRUE:FALSE;
844 case CURLOPT_TIMECONDITION:
846 * Set HTTP time condition. This must be one of the defines in the
847 * curl/curl.h header file.
849 data->set.timecondition = (curl_TimeCond)va_arg(param, long);
851 case CURLOPT_TIMEVALUE:
853 * This is the value to compare with the remote document with the
854 * method set with CURLOPT_TIMECONDITION
856 data->set.timevalue = (time_t)va_arg(param, long);
858 case CURLOPT_SSLVERSION:
860 * Set explicit SSL version to try to connect with, as some SSL
861 * implementations are lame.
863 data->set.ssl.version = va_arg(param, long);
866 #ifndef CURL_DISABLE_HTTP
867 case CURLOPT_AUTOREFERER:
869 * Switch on automatic referer that gets set if curl follows locations.
871 data->set.http_auto_referer = (0 != va_arg(param, long))?TRUE:FALSE;
874 case CURLOPT_ACCEPT_ENCODING:
876 * String to use at the value of Accept-Encoding header.
878 * If the encoding is set to "" we use an Accept-Encoding header that
879 * encompasses all the encodings we support.
880 * If the encoding is set to NULL we don't send an Accept-Encoding header
881 * and ignore an received Content-Encoding header.
884 argptr = va_arg(param, char *);
885 result = setstropt(&data->set.str[STRING_ENCODING],
886 (argptr && !*argptr)?
887 (char *) ALL_CONTENT_ENCODINGS: argptr);
890 case CURLOPT_TRANSFER_ENCODING:
891 data->set.http_transfer_encoding = (0 != va_arg(param, long))?TRUE:FALSE;
894 case CURLOPT_FOLLOWLOCATION:
896 * Follow Location: header hints on a HTTP-server.
898 data->set.http_follow_location = (0 != va_arg(param, long))?TRUE:FALSE;
901 case CURLOPT_UNRESTRICTED_AUTH:
903 * Send authentication (user+password) when following locations, even when
906 data->set.http_disable_hostname_check_before_authentication =
907 (0 != va_arg(param, long))?TRUE:FALSE;
910 case CURLOPT_MAXREDIRS:
912 * The maximum amount of hops you allow curl to follow Location:
913 * headers. This should mostly be used to detect never-ending loops.
915 data->set.maxredirs = va_arg(param, long);
918 case CURLOPT_POSTREDIR:
921 * Set the behaviour of POST when redirecting
922 * CURL_REDIR_GET_ALL - POST is changed to GET after 301 and 302
923 * CURL_REDIR_POST_301 - POST is kept as POST after 301
924 * CURL_REDIR_POST_302 - POST is kept as POST after 302
925 * CURL_REDIR_POST_303 - POST is kept as POST after 303
926 * CURL_REDIR_POST_ALL - POST is kept as POST after 301, 302 and 303
927 * other - POST is kept as POST after 301 and 302
929 int postRedir = curlx_sltosi(va_arg(param, long));
930 data->set.keep_post = postRedir & CURL_REDIR_POST_ALL;
935 /* Does this option serve a purpose anymore? Yes it does, when
936 CURLOPT_POSTFIELDS isn't used and the POST data is read off the
938 if(va_arg(param, long)) {
939 data->set.httpreq = HTTPREQ_POST;
940 data->set.opt_no_body = FALSE; /* this is implied */
943 data->set.httpreq = HTTPREQ_GET;
946 case CURLOPT_COPYPOSTFIELDS:
948 * A string with POST data. Makes curl HTTP POST. Even if it is NULL.
949 * If needed, CURLOPT_POSTFIELDSIZE must have been set prior to
950 * CURLOPT_COPYPOSTFIELDS and not altered later.
952 argptr = va_arg(param, char *);
954 if(!argptr || data->set.postfieldsize == -1)
955 result = setstropt(&data->set.str[STRING_COPYPOSTFIELDS], argptr);
958 * Check that requested length does not overflow the size_t type.
961 if((data->set.postfieldsize < 0) ||
962 ((sizeof(curl_off_t) != sizeof(size_t)) &&
963 (data->set.postfieldsize > (curl_off_t)((size_t)-1))))
964 result = CURLE_OUT_OF_MEMORY;
968 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
970 /* Allocate even when size == 0. This satisfies the need of possible
971 later address compare to detect the COPYPOSTFIELDS mode, and
972 to mark that postfields is used rather than read function or
975 p = malloc((size_t)(data->set.postfieldsize?
976 data->set.postfieldsize:1));
979 result = CURLE_OUT_OF_MEMORY;
981 if(data->set.postfieldsize)
982 memcpy(p, argptr, (size_t)data->set.postfieldsize);
984 data->set.str[STRING_COPYPOSTFIELDS] = p;
989 data->set.postfields = data->set.str[STRING_COPYPOSTFIELDS];
990 data->set.httpreq = HTTPREQ_POST;
993 case CURLOPT_POSTFIELDS:
995 * Like above, but use static data instead of copying it.
997 data->set.postfields = va_arg(param, void *);
998 /* Release old copied data. */
999 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1000 data->set.httpreq = HTTPREQ_POST;
1003 case CURLOPT_POSTFIELDSIZE:
1005 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1006 * figure it out. Enables binary posts.
1008 bigsize = va_arg(param, long);
1010 if(data->set.postfieldsize < bigsize &&
1011 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1012 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1013 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1014 data->set.postfields = NULL;
1017 data->set.postfieldsize = bigsize;
1020 case CURLOPT_POSTFIELDSIZE_LARGE:
1022 * The size of the POSTFIELD data to prevent libcurl to do strlen() to
1023 * figure it out. Enables binary posts.
1025 bigsize = va_arg(param, curl_off_t);
1027 if(data->set.postfieldsize < bigsize &&
1028 data->set.postfields == data->set.str[STRING_COPYPOSTFIELDS]) {
1029 /* Previous CURLOPT_COPYPOSTFIELDS is no longer valid. */
1030 (void) setstropt(&data->set.str[STRING_COPYPOSTFIELDS], NULL);
1031 data->set.postfields = NULL;
1034 data->set.postfieldsize = bigsize;
1037 case CURLOPT_HTTPPOST:
1039 * Set to make us do HTTP POST
1041 data->set.httppost = va_arg(param, struct curl_httppost *);
1042 data->set.httpreq = HTTPREQ_POST_FORM;
1043 data->set.opt_no_body = FALSE; /* this is implied */
1046 case CURLOPT_REFERER:
1048 * String to set in the HTTP Referer: field.
1050 if(data->change.referer_alloc) {
1051 Curl_safefree(data->change.referer);
1052 data->change.referer_alloc = FALSE;
1054 result = setstropt(&data->set.str[STRING_SET_REFERER],
1055 va_arg(param, char *));
1056 data->change.referer = data->set.str[STRING_SET_REFERER];
1059 case CURLOPT_USERAGENT:
1061 * String to use in the HTTP User-Agent field
1063 result = setstropt(&data->set.str[STRING_USERAGENT],
1064 va_arg(param, char *));
1067 case CURLOPT_HTTPHEADER:
1069 * Set a list with HTTP headers to use (or replace internals with)
1071 data->set.headers = va_arg(param, struct curl_slist *);
1074 case CURLOPT_HTTP200ALIASES:
1076 * Set a list of aliases for HTTP 200 in response header
1078 data->set.http200aliases = va_arg(param, struct curl_slist *);
1081 #if !defined(CURL_DISABLE_COOKIES)
1082 case CURLOPT_COOKIE:
1084 * Cookie string to send to the remote server in the request.
1086 result = setstropt(&data->set.str[STRING_COOKIE],
1087 va_arg(param, char *));
1090 case CURLOPT_COOKIEFILE:
1092 * Set cookie file to read and parse. Can be used multiple times.
1094 argptr = (char *)va_arg(param, void *);
1096 struct curl_slist *cl;
1097 /* append the cookie file name to the list of file names, and deal with
1099 cl = curl_slist_append(data->change.cookielist, argptr);
1101 curl_slist_free_all(data->change.cookielist);
1102 data->change.cookielist = NULL;
1103 return CURLE_OUT_OF_MEMORY;
1105 data->change.cookielist = cl; /* store the list for later use */
1109 case CURLOPT_COOKIEJAR:
1111 * Set cookie file name to dump all cookies to when we're done.
1113 result = setstropt(&data->set.str[STRING_COOKIEJAR],
1114 va_arg(param, char *));
1117 * Activate the cookie parser. This may or may not already
1120 data->cookies = Curl_cookie_init(data, NULL, data->cookies,
1121 data->set.cookiesession);
1124 case CURLOPT_COOKIESESSION:
1126 * Set this option to TRUE to start a new "cookie session". It will
1127 * prevent the forthcoming read-cookies-from-file actions to accept
1128 * cookies that are marked as being session cookies, as they belong to a
1131 * In the original Netscape cookie spec, "session cookies" are cookies
1132 * with no expire date set. RFC2109 describes the same action if no
1133 * 'Max-Age' is set and RFC2965 includes the RFC2109 description and adds
1134 * a 'Discard' action that can enforce the discard even for cookies that
1137 * We run mostly with the original cookie spec, as hardly anyone implements
1140 data->set.cookiesession = (0 != va_arg(param, long))?TRUE:FALSE;
1143 case CURLOPT_COOKIELIST:
1144 argptr = va_arg(param, char *);
1149 Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
1151 if(Curl_raw_equal(argptr, "ALL")) {
1152 /* clear all cookies */
1153 Curl_cookie_clearall(data->cookies);
1155 else if(Curl_raw_equal(argptr, "SESS")) {
1156 /* clear session cookies */
1157 Curl_cookie_clearsess(data->cookies);
1159 else if(Curl_raw_equal(argptr, "FLUSH")) {
1160 /* flush cookies to file */
1161 Curl_flush_cookies(data, 0);
1165 /* if cookie engine was not running, activate it */
1166 data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
1168 argptr = strdup(argptr);
1170 result = CURLE_OUT_OF_MEMORY;
1174 if(checkprefix("Set-Cookie:", argptr))
1175 /* HTTP Header format line */
1176 Curl_cookie_add(data, data->cookies, TRUE, argptr + 11, NULL, NULL);
1179 /* Netscape format line */
1180 Curl_cookie_add(data, data->cookies, FALSE, argptr, NULL, NULL);
1185 Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
1188 #endif /* CURL_DISABLE_COOKIES */
1190 case CURLOPT_HTTPGET:
1192 * Set to force us do HTTP GET
1194 if(va_arg(param, long)) {
1195 data->set.httpreq = HTTPREQ_GET;
1196 data->set.upload = FALSE; /* switch off upload */
1197 data->set.opt_no_body = FALSE; /* this is implied */
1201 case CURLOPT_HTTP_VERSION:
1203 * This sets a requested HTTP version to be used. The value is one of
1204 * the listed enums in curl/curl.h.
1206 arg = va_arg(param, long);
1208 if(arg == CURL_HTTP_VERSION_2_0)
1209 return CURLE_UNSUPPORTED_PROTOCOL;
1211 data->set.httpversion = arg;
1214 case CURLOPT_HTTPAUTH:
1216 * Set HTTP Authentication type BITMASK.
1221 unsigned long auth = va_arg(param, unsigned long);
1223 if(auth == CURLAUTH_NONE) {
1224 data->set.httpauth = auth;
1228 /* the DIGEST_IE bit is only used to set a special marker, for all the
1229 rest we need to handle it as normal DIGEST */
1230 data->state.authhost.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1232 if(auth & CURLAUTH_DIGEST_IE) {
1233 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1234 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1237 /* switch off bits we can't support */
1239 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1240 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1241 #elif !defined(NTLM_WB_ENABLED)
1242 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1244 #ifndef USE_HTTP_NEGOTIATE
1245 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1249 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1252 while(bitcheck < 31) {
1253 if(auth & (1UL << bitcheck++)) {
1259 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1261 data->set.httpauth = auth;
1265 #endif /* CURL_DISABLE_HTTP */
1267 case CURLOPT_CUSTOMREQUEST:
1269 * Set a custom string to use as request
1271 result = setstropt(&data->set.str[STRING_CUSTOMREQUEST],
1272 va_arg(param, char *));
1275 data->set.httpreq = HTTPREQ_CUSTOM;
1276 here, we continue as if we were using the already set type
1277 and this just changes the actual request keyword */
1280 #ifndef CURL_DISABLE_PROXY
1281 case CURLOPT_HTTPPROXYTUNNEL:
1283 * Tunnel operations through the proxy instead of normal proxy use
1285 data->set.tunnel_thru_httpproxy = (0 != va_arg(param, long))?TRUE:FALSE;
1288 case CURLOPT_PROXYPORT:
1290 * Explicitly set HTTP proxy port number.
1292 data->set.proxyport = va_arg(param, long);
1295 case CURLOPT_PROXYAUTH:
1297 * Set HTTP Authentication type BITMASK.
1302 unsigned long auth = va_arg(param, unsigned long);
1304 if(auth == CURLAUTH_NONE) {
1305 data->set.proxyauth = auth;
1309 /* the DIGEST_IE bit is only used to set a special marker, for all the
1310 rest we need to handle it as normal DIGEST */
1311 data->state.authproxy.iestyle = (auth & CURLAUTH_DIGEST_IE)?TRUE:FALSE;
1313 if(auth & CURLAUTH_DIGEST_IE) {
1314 auth |= CURLAUTH_DIGEST; /* set standard digest bit */
1315 auth &= ~CURLAUTH_DIGEST_IE; /* unset ie digest bit */
1317 /* switch off bits we can't support */
1319 auth &= ~CURLAUTH_NTLM; /* no NTLM support */
1320 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1321 #elif !defined(NTLM_WB_ENABLED)
1322 auth &= ~CURLAUTH_NTLM_WB; /* no NTLM_WB support */
1324 #ifndef USE_HTTP_NEGOTIATE
1325 auth &= ~CURLAUTH_GSSNEGOTIATE; /* no GSS-Negotiate without GSSAPI or
1329 /* check if any auth bit lower than CURLAUTH_ONLY is still set */
1332 while(bitcheck < 31) {
1333 if(auth & (1UL << bitcheck++)) {
1339 return CURLE_NOT_BUILT_IN; /* no supported types left! */
1341 data->set.proxyauth = auth;
1347 * Set proxy server:port to use as HTTP proxy.
1349 * If the proxy is set to "" we explicitly say that we don't want to use a
1350 * proxy (even though there might be environment variables saying so).
1352 * Setting it to NULL, means no proxy but allows the environment variables
1355 result = setstropt(&data->set.str[STRING_PROXY],
1356 va_arg(param, char *));
1359 case CURLOPT_PROXYTYPE:
1361 * Set proxy type. HTTP/HTTP_1_0/SOCKS4/SOCKS4a/SOCKS5/SOCKS5_HOSTNAME
1363 data->set.proxytype = (curl_proxytype)va_arg(param, long);
1366 case CURLOPT_PROXY_TRANSFER_MODE:
1368 * set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
1370 switch (va_arg(param, long)) {
1372 data->set.proxy_transfer_mode = FALSE;
1375 data->set.proxy_transfer_mode = TRUE;
1378 /* reserve other values for future use */
1379 result = CURLE_UNKNOWN_OPTION;
1383 #endif /* CURL_DISABLE_PROXY */
1385 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
1386 case CURLOPT_SOCKS5_GSSAPI_SERVICE:
1388 * Set gssapi service name
1390 result = setstropt(&data->set.str[STRING_SOCKS5_GSSAPI_SERVICE],
1391 va_arg(param, char *));
1394 case CURLOPT_SOCKS5_GSSAPI_NEC:
1396 * set flag for nec socks5 support
1398 data->set.socks5_gssapi_nec = (0 != va_arg(param, long))?TRUE:FALSE;
1402 case CURLOPT_WRITEHEADER:
1404 * Custom pointer to pass the header write callback function
1406 data->set.writeheader = (void *)va_arg(param, void *);
1408 case CURLOPT_ERRORBUFFER:
1410 * Error buffer provided by the caller to get the human readable
1413 data->set.errorbuffer = va_arg(param, char *);
1417 * FILE pointer to write to. Or possibly
1418 * used as argument to the write callback.
1420 data->set.out = va_arg(param, void *);
1422 case CURLOPT_FTPPORT:
1424 * Use FTP PORT, this also specifies which IP address to use
1426 result = setstropt(&data->set.str[STRING_FTPPORT],
1427 va_arg(param, char *));
1428 data->set.ftp_use_port = (NULL != data->set.str[STRING_FTPPORT]) ?
1432 case CURLOPT_FTP_USE_EPRT:
1433 data->set.ftp_use_eprt = (0 != va_arg(param, long))?TRUE:FALSE;
1436 case CURLOPT_FTP_USE_EPSV:
1437 data->set.ftp_use_epsv = (0 != va_arg(param, long))?TRUE:FALSE;
1440 case CURLOPT_FTP_USE_PRET:
1441 data->set.ftp_use_pret = (0 != va_arg(param, long))?TRUE:FALSE;
1444 case CURLOPT_FTP_SSL_CCC:
1445 data->set.ftp_ccc = (curl_ftpccc)va_arg(param, long);
1448 case CURLOPT_FTP_SKIP_PASV_IP:
1450 * Enable or disable FTP_SKIP_PASV_IP, which will disable/enable the
1451 * bypass of the IP address in PASV responses.
1453 data->set.ftp_skip_ip = (0 != va_arg(param, long))?TRUE:FALSE;
1456 case CURLOPT_INFILE:
1458 * FILE pointer to read the file to be uploaded from. Or possibly
1459 * used as argument to the read callback.
1461 data->set.in = va_arg(param, void *);
1463 case CURLOPT_INFILESIZE:
1465 * If known, this should inform curl about the file size of the
1466 * to-be-uploaded file.
1468 data->set.infilesize = va_arg(param, long);
1470 case CURLOPT_INFILESIZE_LARGE:
1472 * If known, this should inform curl about the file size of the
1473 * to-be-uploaded file.
1475 data->set.infilesize = va_arg(param, curl_off_t);
1477 case CURLOPT_LOW_SPEED_LIMIT:
1479 * The low speed limit that if transfers are below this for
1480 * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
1482 data->set.low_speed_limit=va_arg(param, long);
1484 case CURLOPT_MAX_SEND_SPEED_LARGE:
1486 * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
1487 * bytes per second the transfer is throttled..
1489 data->set.max_send_speed=va_arg(param, curl_off_t);
1491 case CURLOPT_MAX_RECV_SPEED_LARGE:
1493 * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
1494 * second the transfer is throttled..
1496 data->set.max_recv_speed=va_arg(param, curl_off_t);
1498 case CURLOPT_LOW_SPEED_TIME:
1500 * The low speed time that if transfers are below the set
1501 * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
1503 data->set.low_speed_time=va_arg(param, long);
1509 if(data->change.url_alloc) {
1510 /* the already set URL is allocated, free it first! */
1511 Curl_safefree(data->change.url);
1512 data->change.url_alloc = FALSE;
1514 result = setstropt(&data->set.str[STRING_SET_URL],
1515 va_arg(param, char *));
1516 data->change.url = data->set.str[STRING_SET_URL];
1520 * The port number to use when getting the URL
1522 data->set.use_port = va_arg(param, long);
1524 case CURLOPT_TIMEOUT:
1526 * The maximum time you allow curl to use for a single transfer
1529 data->set.timeout = va_arg(param, long) * 1000L;
1532 case CURLOPT_TIMEOUT_MS:
1533 data->set.timeout = va_arg(param, long);
1536 case CURLOPT_CONNECTTIMEOUT:
1538 * The maximum time you allow curl to use to connect.
1540 data->set.connecttimeout = va_arg(param, long) * 1000L;
1543 case CURLOPT_CONNECTTIMEOUT_MS:
1544 data->set.connecttimeout = va_arg(param, long);
1547 case CURLOPT_ACCEPTTIMEOUT_MS:
1549 * The maximum time you allow curl to wait for server connect
1551 data->set.accepttimeout = va_arg(param, long);
1554 case CURLOPT_USERPWD:
1556 * user:password;options to use in the operation
1558 result = setstropt_userpwd(va_arg(param, char *),
1559 &data->set.str[STRING_USERNAME],
1560 &data->set.str[STRING_PASSWORD],
1561 &data->set.str[STRING_OPTIONS]);
1563 case CURLOPT_USERNAME:
1565 * authentication user name to use in the operation
1567 result = setstropt(&data->set.str[STRING_USERNAME],
1568 va_arg(param, char *));
1570 case CURLOPT_PASSWORD:
1572 * authentication password to use in the operation
1574 result = setstropt(&data->set.str[STRING_PASSWORD],
1575 va_arg(param, char *));
1577 case CURLOPT_XOAUTH2_BEARER:
1579 * XOAUTH2 bearer token to use in the operation
1581 result = setstropt(&data->set.str[STRING_BEARER],
1582 va_arg(param, char *));
1584 case CURLOPT_POSTQUOTE:
1586 * List of RAW FTP commands to use after a transfer
1588 data->set.postquote = va_arg(param, struct curl_slist *);
1590 case CURLOPT_PREQUOTE:
1592 * List of RAW FTP commands to use prior to RETR (Wesley Laxton)
1594 data->set.prequote = va_arg(param, struct curl_slist *);
1598 * List of RAW FTP commands to use before a transfer
1600 data->set.quote = va_arg(param, struct curl_slist *);
1602 case CURLOPT_RESOLVE:
1604 * List of NAME:[address] names to populate the DNS cache with
1605 * Prefix the NAME with dash (-) to _remove_ the name from the cache.
1607 * Names added with this API will remain in the cache until explicitly
1608 * removed or the handle is cleaned up.
1610 * This API can remove any name from the DNS cache, but only entries
1611 * that aren't actually in use right now will be pruned immediately.
1613 data->set.resolve = va_arg(param, struct curl_slist *);
1614 data->change.resolve = data->set.resolve;
1616 case CURLOPT_PROGRESSFUNCTION:
1618 * Progress callback function
1620 data->set.fprogress = va_arg(param, curl_progress_callback);
1621 if(data->set.fprogress)
1622 data->progress.callback = TRUE; /* no longer internal */
1624 data->progress.callback = FALSE; /* NULL enforces internal */
1627 case CURLOPT_XFERINFOFUNCTION:
1629 * Transfer info callback function
1631 data->set.fxferinfo = va_arg(param, curl_xferinfo_callback);
1632 if(data->set.fxferinfo)
1633 data->progress.callback = TRUE; /* no longer internal */
1635 data->progress.callback = FALSE; /* NULL enforces internal */
1639 case CURLOPT_PROGRESSDATA:
1641 * Custom client data to pass to the progress callback
1643 data->set.progress_client = va_arg(param, void *);
1646 #ifndef CURL_DISABLE_PROXY
1647 case CURLOPT_PROXYUSERPWD:
1649 * user:password needed to use the proxy
1651 result = setstropt_userpwd(va_arg(param, char *),
1652 &data->set.str[STRING_PROXYUSERNAME],
1653 &data->set.str[STRING_PROXYPASSWORD], NULL);
1655 case CURLOPT_PROXYUSERNAME:
1657 * authentication user name to use in the operation
1659 result = setstropt(&data->set.str[STRING_PROXYUSERNAME],
1660 va_arg(param, char *));
1662 case CURLOPT_PROXYPASSWORD:
1664 * authentication password to use in the operation
1666 result = setstropt(&data->set.str[STRING_PROXYPASSWORD],
1667 va_arg(param, char *));
1669 case CURLOPT_NOPROXY:
1671 * proxy exception list
1673 result = setstropt(&data->set.str[STRING_NOPROXY],
1674 va_arg(param, char *));
1680 * What range of the file you want to transfer
1682 result = setstropt(&data->set.str[STRING_SET_RANGE],
1683 va_arg(param, char *));
1685 case CURLOPT_RESUME_FROM:
1687 * Resume transfer at the give file position
1689 data->set.set_resume_from = va_arg(param, long);
1691 case CURLOPT_RESUME_FROM_LARGE:
1693 * Resume transfer at the give file position
1695 data->set.set_resume_from = va_arg(param, curl_off_t);
1697 case CURLOPT_DEBUGFUNCTION:
1699 * stderr write callback.
1701 data->set.fdebug = va_arg(param, curl_debug_callback);
1703 * if the callback provided is NULL, it'll use the default callback
1706 case CURLOPT_DEBUGDATA:
1708 * Set to a void * that should receive all error writes. This
1709 * defaults to CURLOPT_STDERR for normal operations.
1711 data->set.debugdata = va_arg(param, void *);
1713 case CURLOPT_STDERR:
1715 * Set to a FILE * that should receive all error writes. This
1716 * defaults to stderr for normal operations.
1718 data->set.err = va_arg(param, FILE *);
1720 data->set.err = stderr;
1722 case CURLOPT_HEADERFUNCTION:
1724 * Set header write callback
1726 data->set.fwrite_header = va_arg(param, curl_write_callback);
1728 case CURLOPT_WRITEFUNCTION:
1730 * Set data write callback
1732 data->set.fwrite_func = va_arg(param, curl_write_callback);
1733 if(!data->set.fwrite_func) {
1734 data->set.is_fwrite_set = 0;
1735 /* When set to NULL, reset to our internal default function */
1736 data->set.fwrite_func = (curl_write_callback)fwrite;
1739 data->set.is_fwrite_set = 1;
1741 case CURLOPT_READFUNCTION:
1743 * Read data callback
1745 data->set.fread_func = va_arg(param, curl_read_callback);
1746 if(!data->set.fread_func) {
1747 data->set.is_fread_set = 0;
1748 /* When set to NULL, reset to our internal default function */
1749 data->set.fread_func = (curl_read_callback)fread;
1752 data->set.is_fread_set = 1;
1754 case CURLOPT_SEEKFUNCTION:
1756 * Seek callback. Might be NULL.
1758 data->set.seek_func = va_arg(param, curl_seek_callback);
1760 case CURLOPT_SEEKDATA:
1762 * Seek control callback. Might be NULL.
1764 data->set.seek_client = va_arg(param, void *);
1766 case CURLOPT_CONV_FROM_NETWORK_FUNCTION:
1768 * "Convert from network encoding" callback
1770 data->set.convfromnetwork = va_arg(param, curl_conv_callback);
1772 case CURLOPT_CONV_TO_NETWORK_FUNCTION:
1774 * "Convert to network encoding" callback
1776 data->set.convtonetwork = va_arg(param, curl_conv_callback);
1778 case CURLOPT_CONV_FROM_UTF8_FUNCTION:
1780 * "Convert from UTF-8 encoding" callback
1782 data->set.convfromutf8 = va_arg(param, curl_conv_callback);
1784 case CURLOPT_IOCTLFUNCTION:
1786 * I/O control callback. Might be NULL.
1788 data->set.ioctl_func = va_arg(param, curl_ioctl_callback);
1790 case CURLOPT_IOCTLDATA:
1792 * I/O control data pointer. Might be NULL.
1794 data->set.ioctl_client = va_arg(param, void *);
1796 case CURLOPT_SSLCERT:
1798 * String that holds file name of the SSL certificate to use
1800 result = setstropt(&data->set.str[STRING_CERT],
1801 va_arg(param, char *));
1803 case CURLOPT_SSLCERTTYPE:
1805 * String that holds file type of the SSL certificate to use
1807 result = setstropt(&data->set.str[STRING_CERT_TYPE],
1808 va_arg(param, char *));
1810 case CURLOPT_SSLKEY:
1812 * String that holds file name of the SSL key to use
1814 result = setstropt(&data->set.str[STRING_KEY],
1815 va_arg(param, char *));
1817 case CURLOPT_SSLKEYTYPE:
1819 * String that holds file type of the SSL key to use
1821 result = setstropt(&data->set.str[STRING_KEY_TYPE],
1822 va_arg(param, char *));
1824 case CURLOPT_KEYPASSWD:
1826 * String that holds the SSL or SSH private key password.
1828 result = setstropt(&data->set.str[STRING_KEY_PASSWD],
1829 va_arg(param, char *));
1831 case CURLOPT_SSLENGINE:
1833 * String that holds the SSL crypto engine.
1835 argptr = va_arg(param, char *);
1836 if(argptr && argptr[0])
1837 result = Curl_ssl_set_engine(data, argptr);
1840 case CURLOPT_SSLENGINE_DEFAULT:
1842 * flag to set engine as default.
1844 result = Curl_ssl_set_engine_default(data);
1848 * Kludgy option to enable CRLF conversions. Subject for removal.
1850 data->set.crlf = (0 != va_arg(param, long))?TRUE:FALSE;
1853 case CURLOPT_INTERFACE:
1855 * Set what interface or address/hostname to bind the socket to when
1856 * performing an operation and thus what from-IP your connection will use.
1858 result = setstropt(&data->set.str[STRING_DEVICE],
1859 va_arg(param, char *));
1861 case CURLOPT_LOCALPORT:
1863 * Set what local port to bind the socket to when performing an operation.
1865 data->set.localport = curlx_sltous(va_arg(param, long));
1867 case CURLOPT_LOCALPORTRANGE:
1869 * Set number of local ports to try, starting with CURLOPT_LOCALPORT.
1871 data->set.localportrange = curlx_sltosi(va_arg(param, long));
1873 case CURLOPT_KRBLEVEL:
1875 * A string that defines the kerberos security level.
1877 result = setstropt(&data->set.str[STRING_KRB_LEVEL],
1878 va_arg(param, char *));
1879 data->set.krb = (NULL != data->set.str[STRING_KRB_LEVEL])?TRUE:FALSE;
1881 case CURLOPT_GSSAPI_DELEGATION:
1883 * GSSAPI credential delegation
1885 data->set.gssapi_delegation = va_arg(param, long);
1887 case CURLOPT_SSL_VERIFYPEER:
1889 * Enable peer SSL verifying.
1891 data->set.ssl.verifypeer = (0 != va_arg(param, long))?TRUE:FALSE;
1893 case CURLOPT_SSL_VERIFYHOST:
1895 * Enable verification of the host name in the peer certificate
1897 arg = va_arg(param, long);
1899 /* Obviously people are not reading documentation and too many thought
1900 this argument took a boolean when it wasn't and misused it. We thus ban
1901 1 as a sensible input and we warn about its use. Then we only have the
1902 2 action internally stored as TRUE. */
1905 failf(data, "CURLOPT_SSL_VERIFYHOST no longer supports 1 as value!");
1906 return CURLE_BAD_FUNCTION_ARGUMENT;
1909 data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
1912 /* since these two options are only possible to use on an OpenSSL-
1913 powered libcurl we #ifdef them on this condition so that libcurls
1914 built against other SSL libs will return a proper error when trying
1915 to set this option! */
1916 case CURLOPT_SSL_CTX_FUNCTION:
1918 * Set a SSL_CTX callback
1920 data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
1922 case CURLOPT_SSL_CTX_DATA:
1924 * Set a SSL_CTX callback parameter pointer
1926 data->set.ssl.fsslctxp = va_arg(param, void *);
1929 #if defined(USE_SSLEAY) || defined(USE_QSOSSL) || defined(USE_GSKIT) || \
1931 case CURLOPT_CERTINFO:
1932 data->set.ssl.certinfo = (0 != va_arg(param, long))?TRUE:FALSE;
1935 case CURLOPT_CAINFO:
1937 * Set CA info for SSL connection. Specify file name of the CA certificate
1939 result = setstropt(&data->set.str[STRING_SSL_CAFILE],
1940 va_arg(param, char *));
1942 case CURLOPT_CAPATH:
1944 * Set CA path info for SSL connection. Specify directory name of the CA
1945 * certificates which have been prepared using openssl c_rehash utility.
1947 /* This does not work on windows. */
1948 result = setstropt(&data->set.str[STRING_SSL_CAPATH],
1949 va_arg(param, char *));
1951 case CURLOPT_CRLFILE:
1953 * Set CRL file info for SSL connection. Specify file name of the CRL
1954 * to check certificates revocation
1956 result = setstropt(&data->set.str[STRING_SSL_CRLFILE],
1957 va_arg(param, char *));
1959 case CURLOPT_ISSUERCERT:
1961 * Set Issuer certificate file
1962 * to check certificates issuer
1964 result = setstropt(&data->set.str[STRING_SSL_ISSUERCERT],
1965 va_arg(param, char *));
1967 case CURLOPT_TELNETOPTIONS:
1969 * Set a linked list of telnet options
1971 data->set.telnet_options = va_arg(param, struct curl_slist *);
1974 case CURLOPT_BUFFERSIZE:
1976 * The application kindly asks for a differently sized receive buffer.
1977 * If it seems reasonable, we'll use it.
1979 data->set.buffer_size = va_arg(param, long);
1981 if((data->set.buffer_size> (BUFSIZE -1 )) ||
1982 (data->set.buffer_size < 1))
1983 data->set.buffer_size = 0; /* huge internal default */
1987 case CURLOPT_NOSIGNAL:
1989 * The application asks not to set any signal() or alarm() handlers,
1990 * even when using a timeout.
1992 data->set.no_signal = (0 != va_arg(param, long))?TRUE:FALSE;
1997 struct Curl_share *set;
1998 set = va_arg(param, struct Curl_share *);
2000 /* disconnect from old share, if any */
2002 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2004 if(data->dns.hostcachetype == HCACHE_SHARED) {
2005 data->dns.hostcache = NULL;
2006 data->dns.hostcachetype = HCACHE_NONE;
2009 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2010 if(data->share->cookies == data->cookies)
2011 data->cookies = NULL;
2014 if(data->share->sslsession == data->state.session)
2015 data->state.session = NULL;
2017 data->share->dirty--;
2019 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2023 /* use new share if it set */
2027 Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
2029 data->share->dirty++;
2031 if(data->share->hostcache) {
2032 /* use shared host cache */
2033 data->dns.hostcache = data->share->hostcache;
2034 data->dns.hostcachetype = HCACHE_SHARED;
2036 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
2037 if(data->share->cookies) {
2038 /* use shared cookie list, first free own one if any */
2040 Curl_cookie_cleanup(data->cookies);
2041 /* enable cookies since we now use a share that uses cookies! */
2042 data->cookies = data->share->cookies;
2044 #endif /* CURL_DISABLE_HTTP */
2045 if(data->share->sslsession) {
2046 data->set.ssl.max_ssl_sessions = data->share->max_ssl_sessions;
2047 data->state.session = data->share->sslsession;
2049 Curl_share_unlock(data, CURL_LOCK_DATA_SHARE);
2052 /* check for host cache not needed,
2053 * it will be done by curl_easy_perform */
2057 case CURLOPT_PRIVATE:
2059 * Set private data pointer.
2061 data->set.private_data = va_arg(param, void *);
2064 case CURLOPT_MAXFILESIZE:
2066 * Set the maximum size of a file to download.
2068 data->set.max_filesize = va_arg(param, long);
2072 case CURLOPT_USE_SSL:
2074 * Make transfers attempt to use SSL/TLS.
2076 data->set.use_ssl = (curl_usessl)va_arg(param, long);
2079 case CURLOPT_SSL_OPTIONS:
2080 arg = va_arg(param, long);
2081 data->set.ssl_enable_beast = arg&CURLSSLOPT_ALLOW_BEAST?TRUE:FALSE;
2085 case CURLOPT_FTPSSLAUTH:
2087 * Set a specific auth for FTP-SSL transfers.
2089 data->set.ftpsslauth = (curl_ftpauth)va_arg(param, long);
2092 case CURLOPT_IPRESOLVE:
2093 data->set.ipver = va_arg(param, long);
2096 case CURLOPT_MAXFILESIZE_LARGE:
2098 * Set the maximum size of a file to download.
2100 data->set.max_filesize = va_arg(param, curl_off_t);
2103 case CURLOPT_TCP_NODELAY:
2105 * Enable or disable TCP_NODELAY, which will disable/enable the Nagle
2108 data->set.tcp_nodelay = (0 != va_arg(param, long))?TRUE:FALSE;
2111 case CURLOPT_FTP_ACCOUNT:
2112 result = setstropt(&data->set.str[STRING_FTP_ACCOUNT],
2113 va_arg(param, char *));
2116 case CURLOPT_IGNORE_CONTENT_LENGTH:
2117 data->set.ignorecl = (0 != va_arg(param, long))?TRUE:FALSE;
2120 case CURLOPT_CONNECT_ONLY:
2122 * No data transfer, set up connection and let application use the socket
2124 data->set.connect_only = (0 != va_arg(param, long))?TRUE:FALSE;
2127 case CURLOPT_FTP_ALTERNATIVE_TO_USER:
2128 result = setstropt(&data->set.str[STRING_FTP_ALTERNATIVE_TO_USER],
2129 va_arg(param, char *));
2132 case CURLOPT_SOCKOPTFUNCTION:
2134 * socket callback function: called after socket() but before connect()
2136 data->set.fsockopt = va_arg(param, curl_sockopt_callback);
2139 case CURLOPT_SOCKOPTDATA:
2141 * socket callback data pointer. Might be NULL.
2143 data->set.sockopt_client = va_arg(param, void *);
2146 case CURLOPT_OPENSOCKETFUNCTION:
2148 * open/create socket callback function: called instead of socket(),
2151 data->set.fopensocket = va_arg(param, curl_opensocket_callback);
2154 case CURLOPT_OPENSOCKETDATA:
2156 * socket callback data pointer. Might be NULL.
2158 data->set.opensocket_client = va_arg(param, void *);
2161 case CURLOPT_CLOSESOCKETFUNCTION:
2163 * close socket callback function: called instead of close()
2164 * when shutting down a connection
2166 data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
2169 case CURLOPT_CLOSESOCKETDATA:
2171 * socket callback data pointer. Might be NULL.
2173 data->set.closesocket_client = va_arg(param, void *);
2176 case CURLOPT_SSL_SESSIONID_CACHE:
2177 data->set.ssl.sessionid = (0 != va_arg(param, long))?TRUE:FALSE;
2181 /* we only include SSH options if explicitly built to support SSH */
2182 case CURLOPT_SSH_AUTH_TYPES:
2183 data->set.ssh_auth_types = va_arg(param, long);
2186 case CURLOPT_SSH_PUBLIC_KEYFILE:
2188 * Use this file instead of the $HOME/.ssh/id_dsa.pub file
2190 result = setstropt(&data->set.str[STRING_SSH_PUBLIC_KEY],
2191 va_arg(param, char *));
2194 case CURLOPT_SSH_PRIVATE_KEYFILE:
2196 * Use this file instead of the $HOME/.ssh/id_dsa file
2198 result = setstropt(&data->set.str[STRING_SSH_PRIVATE_KEY],
2199 va_arg(param, char *));
2201 case CURLOPT_SSH_HOST_PUBLIC_KEY_MD5:
2203 * Option to allow for the MD5 of the host public key to be checked
2204 * for validation purposes.
2206 result = setstropt(&data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5],
2207 va_arg(param, char *));
2209 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
2210 case CURLOPT_SSH_KNOWNHOSTS:
2212 * Store the file name to read known hosts from.
2214 result = setstropt(&data->set.str[STRING_SSH_KNOWNHOSTS],
2215 va_arg(param, char *));
2218 case CURLOPT_SSH_KEYFUNCTION:
2219 /* setting to NULL is fine since the ssh.c functions themselves will
2220 then rever to use the internal default */
2221 data->set.ssh_keyfunc = va_arg(param, curl_sshkeycallback);
2224 case CURLOPT_SSH_KEYDATA:
2226 * Custom client data to pass to the SSH keyfunc callback
2228 data->set.ssh_keyfunc_userp = va_arg(param, void *);
2230 #endif /* HAVE_LIBSSH2_KNOWNHOST_API */
2232 #endif /* USE_LIBSSH2 */
2234 case CURLOPT_HTTP_TRANSFER_DECODING:
2236 * disable libcurl transfer encoding is used
2238 data->set.http_te_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2241 case CURLOPT_HTTP_CONTENT_DECODING:
2243 * raw data passed to the application when content encoding is used
2245 data->set.http_ce_skip = (0 == va_arg(param, long))?TRUE:FALSE;
2248 case CURLOPT_NEW_FILE_PERMS:
2250 * Uses these permissions instead of 0644
2252 data->set.new_file_perms = va_arg(param, long);
2255 case CURLOPT_NEW_DIRECTORY_PERMS:
2257 * Uses these permissions instead of 0755
2259 data->set.new_directory_perms = va_arg(param, long);
2262 case CURLOPT_ADDRESS_SCOPE:
2264 * We always get longs when passed plain numericals, but for this value we
2265 * know that an unsigned int will always hold the value so we blindly
2266 * typecast to this type
2268 data->set.scope = curlx_sltoui(va_arg(param, long));
2271 case CURLOPT_PROTOCOLS:
2272 /* set the bitmask for the protocols that are allowed to be used for the
2273 transfer, which thus helps the app which takes URLs from users or other
2274 external inputs and want to restrict what protocol(s) to deal
2275 with. Defaults to CURLPROTO_ALL. */
2276 data->set.allowed_protocols = va_arg(param, long);
2279 case CURLOPT_REDIR_PROTOCOLS:
2280 /* set the bitmask for the protocols that libcurl is allowed to follow to,
2281 as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
2282 to be set in both bitmasks to be allowed to get redirected to. Defaults
2283 to all protocols except FILE and SCP. */
2284 data->set.redir_protocols = va_arg(param, long);
2287 case CURLOPT_MAIL_FROM:
2288 /* Set the SMTP mail originator */
2289 result = setstropt(&data->set.str[STRING_MAIL_FROM],
2290 va_arg(param, char *));
2293 case CURLOPT_MAIL_AUTH:
2294 /* Set the SMTP auth originator */
2295 result = setstropt(&data->set.str[STRING_MAIL_AUTH],
2296 va_arg(param, char *));
2299 case CURLOPT_MAIL_RCPT:
2300 /* Set the list of mail recipients */
2301 data->set.mail_rcpt = va_arg(param, struct curl_slist *);
2304 case CURLOPT_SASL_IR:
2305 /* Enable/disable SASL initial response */
2306 data->set.sasl_ir = (0 != va_arg(param, long)) ? TRUE : FALSE;
2309 case CURLOPT_RTSP_REQUEST:
2312 * Set the RTSP request method (OPTIONS, SETUP, PLAY, etc...)
2313 * Would this be better if the RTSPREQ_* were just moved into here?
2315 long curl_rtspreq = va_arg(param, long);
2316 Curl_RtspReq rtspreq = RTSPREQ_NONE;
2317 switch(curl_rtspreq) {
2318 case CURL_RTSPREQ_OPTIONS:
2319 rtspreq = RTSPREQ_OPTIONS;
2322 case CURL_RTSPREQ_DESCRIBE:
2323 rtspreq = RTSPREQ_DESCRIBE;
2326 case CURL_RTSPREQ_ANNOUNCE:
2327 rtspreq = RTSPREQ_ANNOUNCE;
2330 case CURL_RTSPREQ_SETUP:
2331 rtspreq = RTSPREQ_SETUP;
2334 case CURL_RTSPREQ_PLAY:
2335 rtspreq = RTSPREQ_PLAY;
2338 case CURL_RTSPREQ_PAUSE:
2339 rtspreq = RTSPREQ_PAUSE;
2342 case CURL_RTSPREQ_TEARDOWN:
2343 rtspreq = RTSPREQ_TEARDOWN;
2346 case CURL_RTSPREQ_GET_PARAMETER:
2347 rtspreq = RTSPREQ_GET_PARAMETER;
2350 case CURL_RTSPREQ_SET_PARAMETER:
2351 rtspreq = RTSPREQ_SET_PARAMETER;
2354 case CURL_RTSPREQ_RECORD:
2355 rtspreq = RTSPREQ_RECORD;
2358 case CURL_RTSPREQ_RECEIVE:
2359 rtspreq = RTSPREQ_RECEIVE;
2362 rtspreq = RTSPREQ_NONE;
2365 data->set.rtspreq = rtspreq;
2370 case CURLOPT_RTSP_SESSION_ID:
2372 * Set the RTSP Session ID manually. Useful if the application is
2373 * resuming a previously established RTSP session
2375 result = setstropt(&data->set.str[STRING_RTSP_SESSION_ID],
2376 va_arg(param, char *));
2379 case CURLOPT_RTSP_STREAM_URI:
2381 * Set the Stream URI for the RTSP request. Unless the request is
2382 * for generic server options, the application will need to set this.
2384 result = setstropt(&data->set.str[STRING_RTSP_STREAM_URI],
2385 va_arg(param, char *));
2388 case CURLOPT_RTSP_TRANSPORT:
2390 * The content of the Transport: header for the RTSP request
2392 result = setstropt(&data->set.str[STRING_RTSP_TRANSPORT],
2393 va_arg(param, char *));
2396 case CURLOPT_RTSP_CLIENT_CSEQ:
2398 * Set the CSEQ number to issue for the next RTSP request. Useful if the
2399 * application is resuming a previously broken connection. The CSEQ
2400 * will increment from this new number henceforth.
2402 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2405 case CURLOPT_RTSP_SERVER_CSEQ:
2406 /* Same as the above, but for server-initiated requests */
2407 data->state.rtsp_next_client_CSeq = va_arg(param, long);
2410 case CURLOPT_INTERLEAVEDATA:
2411 data->set.rtp_out = va_arg(param, void *);
2413 case CURLOPT_INTERLEAVEFUNCTION:
2414 /* Set the user defined RTP write function */
2415 data->set.fwrite_rtp = va_arg(param, curl_write_callback);
2418 case CURLOPT_WILDCARDMATCH:
2419 data->set.wildcardmatch = (0 != va_arg(param, long))?TRUE:FALSE;
2421 case CURLOPT_CHUNK_BGN_FUNCTION:
2422 data->set.chunk_bgn = va_arg(param, curl_chunk_bgn_callback);
2424 case CURLOPT_CHUNK_END_FUNCTION:
2425 data->set.chunk_end = va_arg(param, curl_chunk_end_callback);
2427 case CURLOPT_FNMATCH_FUNCTION:
2428 data->set.fnmatch = va_arg(param, curl_fnmatch_callback);
2430 case CURLOPT_CHUNK_DATA:
2431 data->wildcard.customptr = va_arg(param, void *);
2433 case CURLOPT_FNMATCH_DATA:
2434 data->set.fnmatch_data = va_arg(param, void *);
2437 case CURLOPT_TLSAUTH_USERNAME:
2438 result = setstropt(&data->set.str[STRING_TLSAUTH_USERNAME],
2439 va_arg(param, char *));
2440 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2441 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2443 case CURLOPT_TLSAUTH_PASSWORD:
2444 result = setstropt(&data->set.str[STRING_TLSAUTH_PASSWORD],
2445 va_arg(param, char *));
2446 if(data->set.str[STRING_TLSAUTH_USERNAME] && !data->set.ssl.authtype)
2447 data->set.ssl.authtype = CURL_TLSAUTH_SRP; /* default to SRP */
2449 case CURLOPT_TLSAUTH_TYPE:
2450 if(strnequal((char *)va_arg(param, char *), "SRP", strlen("SRP")))
2451 data->set.ssl.authtype = CURL_TLSAUTH_SRP;
2453 data->set.ssl.authtype = CURL_TLSAUTH_NONE;
2456 case CURLOPT_DNS_SERVERS:
2457 result = Curl_set_dns_servers(data, va_arg(param, char *));
2459 case CURLOPT_DNS_INTERFACE:
2460 result = Curl_set_dns_interface(data, va_arg(param, char *));
2462 case CURLOPT_DNS_LOCAL_IP4:
2463 result = Curl_set_dns_local_ip4(data, va_arg(param, char *));
2465 case CURLOPT_DNS_LOCAL_IP6:
2466 result = Curl_set_dns_local_ip6(data, va_arg(param, char *));
2469 case CURLOPT_TCP_KEEPALIVE:
2470 data->set.tcp_keepalive = (0 != va_arg(param, long))?TRUE:FALSE;
2472 case CURLOPT_TCP_KEEPIDLE:
2473 data->set.tcp_keepidle = va_arg(param, long);
2475 case CURLOPT_TCP_KEEPINTVL:
2476 data->set.tcp_keepintvl = va_arg(param, long);
2480 /* unknown tag and its companion, just ignore: */
2481 result = CURLE_UNKNOWN_OPTION;
2488 static void conn_free(struct connectdata *conn)
2493 /* possible left-overs from the async name resolvers */
2494 Curl_resolver_cancel(conn);
2496 /* close the SSL stuff before we close any sockets since they will/may
2497 write to the sockets */
2498 Curl_ssl_close(conn, FIRSTSOCKET);
2499 Curl_ssl_close(conn, SECONDARYSOCKET);
2501 /* close possibly still open sockets */
2502 if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
2503 Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
2504 if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET])
2505 Curl_closesocket(conn, conn->sock[FIRSTSOCKET]);
2507 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
2508 Curl_ntlm_wb_cleanup(conn);
2511 Curl_safefree(conn->user);
2512 Curl_safefree(conn->passwd);
2513 Curl_safefree(conn->xoauth2_bearer);
2514 Curl_safefree(conn->options);
2515 Curl_safefree(conn->proxyuser);
2516 Curl_safefree(conn->proxypasswd);
2517 Curl_safefree(conn->allocptr.proxyuserpwd);
2518 Curl_safefree(conn->allocptr.uagent);
2519 Curl_safefree(conn->allocptr.userpwd);
2520 Curl_safefree(conn->allocptr.accept_encoding);
2521 Curl_safefree(conn->allocptr.te);
2522 Curl_safefree(conn->allocptr.rangeline);
2523 Curl_safefree(conn->allocptr.ref);
2524 Curl_safefree(conn->allocptr.host);
2525 Curl_safefree(conn->allocptr.cookiehost);
2526 Curl_safefree(conn->allocptr.rtsp_transport);
2527 Curl_safefree(conn->trailer);
2528 Curl_safefree(conn->host.rawalloc); /* host name buffer */
2529 Curl_safefree(conn->proxy.rawalloc); /* proxy name buffer */
2530 Curl_safefree(conn->master_buffer);
2532 Curl_llist_destroy(conn->send_pipe, NULL);
2533 Curl_llist_destroy(conn->recv_pipe, NULL);
2535 conn->send_pipe = NULL;
2536 conn->recv_pipe = NULL;
2538 Curl_safefree(conn->localdev);
2539 Curl_free_ssl_config(&conn->ssl_config);
2541 free(conn); /* free all the connection oriented data */
2544 CURLcode Curl_disconnect(struct connectdata *conn, bool dead_connection)
2546 struct SessionHandle *data;
2548 return CURLE_OK; /* this is closed and fine already */
2552 DEBUGF(fprintf(stderr, "DISCONNECT without easy handle, ignoring\n"));
2556 if(conn->dns_entry != NULL) {
2557 Curl_resolv_unlock(data, conn->dns_entry);
2558 conn->dns_entry = NULL;
2561 Curl_hostcache_prune(data); /* kill old DNS cache entries */
2564 int has_host_ntlm = (conn->ntlm.state != NTLMSTATE_NONE);
2565 int has_proxy_ntlm = (conn->proxyntlm.state != NTLMSTATE_NONE);
2567 /* Authentication data is a mix of connection-related and sessionhandle-
2568 related stuff. NTLM is connection-related so when we close the shop
2572 data->state.authhost.done = FALSE;
2573 data->state.authhost.picked =
2574 data->state.authhost.want;
2577 if(has_proxy_ntlm) {
2578 data->state.authproxy.done = FALSE;
2579 data->state.authproxy.picked =
2580 data->state.authproxy.want;
2583 if(has_host_ntlm || has_proxy_ntlm)
2584 data->state.authproblem = FALSE;
2587 /* Cleanup NTLM connection-related data */
2588 Curl_http_ntlm_cleanup(conn);
2590 /* Cleanup possible redirect junk */
2591 if(data->req.newurl) {
2592 free(data->req.newurl);
2593 data->req.newurl = NULL;
2596 if(conn->handler->disconnect)
2597 /* This is set if protocol-specific cleanups should be made */
2598 conn->handler->disconnect(conn, dead_connection);
2600 /* unlink ourselves! */
2601 infof(data, "Closing connection %ld\n", conn->connection_id);
2602 Curl_conncache_remove_conn(data->state.conn_cache, conn);
2604 #if defined(USE_LIBIDN)
2605 if(conn->host.encalloc)
2606 idn_free(conn->host.encalloc); /* encoded host name buffer, must be freed
2607 with idn_free() since this was allocated
2609 if(conn->proxy.encalloc)
2610 idn_free(conn->proxy.encalloc); /* encoded proxy name buffer, must be
2611 freed with idn_free() since this was
2612 allocated by libidn */
2613 #elif defined(USE_WIN32_IDN)
2614 free(conn->host.encalloc); /* encoded host name buffer, must be freed with
2615 idn_free() since this was allocated by
2616 curl_win32_idn_to_ascii */
2617 if(conn->proxy.encalloc)
2618 free(conn->proxy.encalloc); /* encoded proxy name buffer, must be freed
2619 with idn_free() since this was allocated by
2620 curl_win32_idn_to_ascii */
2623 Curl_ssl_close(conn, FIRSTSOCKET);
2625 /* Indicate to all handles on the pipe that we're dead */
2626 if(Curl_multi_pipeline_enabled(data->multi)) {
2627 signalPipeClose(conn->send_pipe, TRUE);
2628 signalPipeClose(conn->recv_pipe, TRUE);
2633 Curl_speedinit(data);
2639 * This function should return TRUE if the socket is to be assumed to
2640 * be dead. Most commonly this happens when the server has closed the
2641 * connection due to inactivity.
2643 static bool SocketIsDead(curl_socket_t sock)
2646 bool ret_val = TRUE;
2648 sval = Curl_socket_ready(sock, CURL_SOCKET_BAD, 0);
2656 static bool IsPipeliningPossible(const struct SessionHandle *handle,
2657 const struct connectdata *conn)
2659 if((conn->handler->protocol & CURLPROTO_HTTP) &&
2660 Curl_multi_pipeline_enabled(handle->multi) &&
2661 (handle->set.httpreq == HTTPREQ_GET ||
2662 handle->set.httpreq == HTTPREQ_HEAD) &&
2663 handle->set.httpversion != CURL_HTTP_VERSION_1_0)
2669 bool Curl_isPipeliningEnabled(const struct SessionHandle *handle)
2671 return Curl_multi_pipeline_enabled(handle->multi);
2674 CURLcode Curl_addHandleToPipeline(struct SessionHandle *data,
2675 struct curl_llist *pipeline)
2677 if(!Curl_llist_insert_next(pipeline, pipeline->tail, data))
2678 return CURLE_OUT_OF_MEMORY;
2679 infof(data, "Curl_addHandleToPipeline: length: %d\n", pipeline->size);
2683 int Curl_removeHandleFromPipeline(struct SessionHandle *handle,
2684 struct curl_llist *pipeline)
2686 struct curl_llist_element *curr;
2688 curr = pipeline->head;
2690 if(curr->ptr == handle) {
2691 Curl_llist_remove(pipeline, curr, NULL);
2692 return 1; /* we removed a handle */
2700 #if 0 /* this code is saved here as it is useful for debugging purposes */
2701 static void Curl_printPipeline(struct curl_llist *pipeline)
2703 struct curl_llist_element *curr;
2705 curr = pipeline->head;
2707 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2708 infof(data, "Handle in pipeline: %s\n", data->state.path);
2714 static struct SessionHandle* gethandleathead(struct curl_llist *pipeline)
2716 struct curl_llist_element *curr = pipeline->head;
2718 return (struct SessionHandle *) curr->ptr;
2724 /* remove the specified connection from all (possible) pipelines and related
2726 void Curl_getoff_all_pipelines(struct SessionHandle *data,
2727 struct connectdata *conn)
2729 bool recv_head = (conn->readchannel_inuse &&
2730 (gethandleathead(conn->recv_pipe) == data)) ? TRUE : FALSE;
2732 bool send_head = (conn->writechannel_inuse &&
2733 (gethandleathead(conn->send_pipe) == data)) ? TRUE : FALSE;
2735 if(Curl_removeHandleFromPipeline(data, conn->recv_pipe) && recv_head)
2736 conn->readchannel_inuse = FALSE;
2737 if(Curl_removeHandleFromPipeline(data, conn->send_pipe) && send_head)
2738 conn->writechannel_inuse = FALSE;
2741 static void signalPipeClose(struct curl_llist *pipeline, bool pipe_broke)
2743 struct curl_llist_element *curr;
2748 curr = pipeline->head;
2750 struct curl_llist_element *next = curr->next;
2751 struct SessionHandle *data = (struct SessionHandle *) curr->ptr;
2753 #ifdef DEBUGBUILD /* debug-only code */
2754 if(data->magic != CURLEASY_MAGIC_NUMBER) {
2756 infof(data, "signalPipeClose() found BAAD easy handle\n");
2761 data->state.pipe_broke = TRUE;
2762 Curl_multi_handlePipeBreak(data);
2763 Curl_llist_remove(pipeline, curr, NULL);
2769 * This function finds the connection in the connection
2770 * cache that has been unused for the longest time.
2772 * Returns the pointer to the oldest idle connection, or NULL if none was
2775 static struct connectdata *
2776 find_oldest_idle_connection(struct SessionHandle *data)
2778 struct conncache *bc = data->state.conn_cache;
2779 struct curl_hash_iterator iter;
2780 struct curl_llist_element *curr;
2781 struct curl_hash_element *he;
2785 struct connectdata *conn_candidate = NULL;
2786 struct connectbundle *bundle;
2790 Curl_hash_start_iterate(bc->hash, &iter);
2792 he = Curl_hash_next_element(&iter);
2794 struct connectdata *conn;
2798 curr = bundle->conn_list->head;
2803 /* Set higher score for the age passed since the connection was used */
2804 score = Curl_tvdiff(now, conn->now);
2806 if(score > highscore) {
2808 conn_candidate = conn;
2814 he = Curl_hash_next_element(&iter);
2817 return conn_candidate;
2821 * This function finds the connection in the connection
2822 * bundle that has been unused for the longest time.
2824 * Returns the pointer to the oldest idle connection, or NULL if none was
2827 static struct connectdata *
2828 find_oldest_idle_connection_in_bundle(struct SessionHandle *data,
2829 struct connectbundle *bundle)
2831 struct curl_llist_element *curr;
2835 struct connectdata *conn_candidate = NULL;
2836 struct connectdata *conn;
2842 curr = bundle->conn_list->head;
2847 /* Set higher score for the age passed since the connection was used */
2848 score = Curl_tvdiff(now, conn->now);
2850 if(score > highscore) {
2852 conn_candidate = conn;
2858 return conn_candidate;
2862 * Given one filled in connection struct (named needle), this function should
2863 * detect if there already is one that has all the significant details
2864 * exactly the same and thus should be used instead.
2866 * If there is a match, this function returns TRUE - and has marked the
2867 * connection as 'in-use'. It must later be called with ConnectionDone() to
2868 * return back to 'idle' (unused) state.
2870 * The force_reuse flag is set if the connection must be used, even if
2871 * the pipelining strategy wants to open a new connection instead of reusing.
2874 ConnectionExists(struct SessionHandle *data,
2875 struct connectdata *needle,
2876 struct connectdata **usethis,
2879 struct connectdata *check;
2880 struct connectdata *chosen = 0;
2881 bool canPipeline = IsPipeliningPossible(data, needle);
2882 bool wantNTLM = (data->state.authhost.want==CURLAUTH_NTLM) ||
2883 (data->state.authhost.want==CURLAUTH_NTLM_WB) ? TRUE : FALSE;
2884 struct connectbundle *bundle;
2886 *force_reuse = FALSE;
2888 /* We can't pipe if the site is blacklisted */
2889 if(canPipeline && Curl_pipeline_site_blacklisted(data, needle)) {
2890 canPipeline = FALSE;
2893 /* Look up the bundle with all the connections to this
2895 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
2898 size_t max_pipe_len = Curl_multi_max_pipeline_length(data->multi);
2899 size_t best_pipe_len = max_pipe_len;
2900 struct curl_llist_element *curr;
2902 infof(data, "Found bundle for host %s: %p\n",
2903 needle->host.name, (void *)bundle);
2905 /* We can't pipe if we don't know anything about the server */
2906 if(canPipeline && !bundle->server_supports_pipelining) {
2907 infof(data, "Server doesn't support pipelining\n");
2908 canPipeline = FALSE;
2911 curr = bundle->conn_list->head;
2914 bool credentialsMatch = FALSE;
2918 * Note that if we use a HTTP proxy, we check connections to that
2919 * proxy and not to the actual remote server.
2924 pipeLen = check->send_pipe->size + check->recv_pipe->size;
2926 if(!pipeLen && !check->inuse) {
2927 /* The check for a dead socket makes sense only if there are no
2928 handles in pipeline and the connection isn't already marked in
2931 if(check->handler->protocol & CURLPROTO_RTSP)
2932 /* RTSP is a special case due to RTP interleaving */
2933 dead = Curl_rtsp_connisdead(check);
2935 dead = SocketIsDead(check->sock[FIRSTSOCKET]);
2939 infof(data, "Connection %ld seems to be dead!\n",
2940 check->connection_id);
2942 /* disconnect resources */
2943 Curl_disconnect(check, /* dead_connection */ TRUE);
2949 /* Make sure the pipe has only GET requests */
2950 struct SessionHandle* sh = gethandleathead(check->send_pipe);
2951 struct SessionHandle* rh = gethandleathead(check->recv_pipe);
2953 if(!IsPipeliningPossible(sh, check))
2957 if(!IsPipeliningPossible(rh, check))
2963 /* can only happen within multi handles, and means that another easy
2964 handle is using this connection */
2968 if(Curl_resolver_asynch()) {
2969 /* ip_addr_str[0] is NUL only if the resolving of the name hasn't
2970 completed yet and until then we don't re-use this connection */
2971 if(!check->ip_addr_str[0]) {
2973 "Connection #%ld is still name resolving, can't reuse\n",
2974 check->connection_id);
2979 if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) ||
2980 check->bits.close) {
2981 /* Don't pick a connection that hasn't connected yet or that is going
2983 infof(data, "Connection #%ld isn't open enough, can't reuse\n",
2984 check->connection_id);
2986 if(check->recv_pipe->size > 0) {
2988 "BAD! Unconnected #%ld has a non-empty recv pipeline!\n",
2989 check->connection_id);
2996 if((needle->handler->flags&PROTOPT_SSL) !=
2997 (check->handler->flags&PROTOPT_SSL))
2998 /* don't do mixed SSL and non-SSL connections */
2999 if(!(needle->handler->protocol & check->handler->protocol))
3000 /* except protocols that have been upgraded via TLS */
3003 if(needle->handler->flags&PROTOPT_SSL) {
3004 if((data->set.ssl.verifypeer != check->verifypeer) ||
3005 (data->set.ssl.verifyhost != check->verifyhost))
3009 if(needle->bits.proxy != check->bits.proxy)
3010 /* don't do mixed proxy and non-proxy connections */
3013 if(!canPipeline && check->inuse)
3014 /* this request can't be pipelined but the checked connection is
3015 already in use so we skip it */
3018 if(needle->localdev || needle->localport) {
3019 /* If we are bound to a specific local end (IP+port), we must not
3020 re-use a random other one, although if we didn't ask for a
3021 particular one we can reuse one that was bound.
3023 This comparison is a bit rough and too strict. Since the input
3024 parameters can be specified in numerous ways and still end up the
3025 same it would take a lot of processing to make it really accurate.
3026 Instead, this matching will assume that re-uses of bound connections
3027 will most likely also re-use the exact same binding parameters and
3028 missing out a few edge cases shouldn't hurt anyone very much.
3030 if((check->localport != needle->localport) ||
3031 (check->localportrange != needle->localportrange) ||
3033 !needle->localdev ||
3034 strcmp(check->localdev, needle->localdev))
3038 if((needle->handler->protocol & CURLPROTO_FTP) ||
3039 ((needle->handler->protocol & CURLPROTO_HTTP) && wantNTLM)) {
3040 /* This is FTP or HTTP+NTLM, verify that we're using the same name
3041 and password as well */
3042 if(!strequal(needle->user, check->user) ||
3043 !strequal(needle->passwd, check->passwd)) {
3044 /* one of them was different */
3047 credentialsMatch = TRUE;
3050 if(!needle->bits.httpproxy || needle->handler->flags&PROTOPT_SSL ||
3051 (needle->bits.httpproxy && check->bits.httpproxy &&
3052 needle->bits.tunnel_proxy && check->bits.tunnel_proxy &&
3053 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3054 (needle->port == check->port))) {
3055 /* The requested connection does not use a HTTP proxy or it uses SSL or
3056 it is a non-SSL protocol tunneled over the same http proxy name and
3057 port number or it is a non-SSL protocol which is allowed to be
3060 if((Curl_raw_equal(needle->handler->scheme, check->handler->scheme) ||
3061 needle->handler->protocol & check->handler->protocol) &&
3062 Curl_raw_equal(needle->host.name, check->host.name) &&
3063 needle->remote_port == check->remote_port) {
3064 if(needle->handler->flags & PROTOPT_SSL) {
3065 /* This is a SSL connection so verify that we're using the same
3066 SSL options as well */
3067 if(!Curl_ssl_config_matches(&needle->ssl_config,
3068 &check->ssl_config)) {
3070 "Connection #%ld has different SSL parameters, "
3072 check->connection_id));
3075 else if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) {
3077 "Connection #%ld has not started SSL connect, "
3079 check->connection_id));
3086 else { /* The requested needle connection is using a proxy,
3087 is the checked one using the same host, port and type? */
3088 if(check->bits.proxy &&
3089 (needle->proxytype == check->proxytype) &&
3090 (needle->bits.tunnel_proxy == check->bits.tunnel_proxy) &&
3091 Curl_raw_equal(needle->proxy.name, check->proxy.name) &&
3092 needle->port == check->port) {
3093 /* This is the same proxy connection, use it! */
3099 /* If we are looking for an NTLM connection, check if this is already
3100 authenticating with the right credentials. If not, keep looking so
3101 that we can reuse NTLM connections if possible. (Especially we
3102 must not reuse the same connection if partway through
3105 if(credentialsMatch && check->ntlm.state != NTLMSTATE_NONE) {
3108 /* We must use this connection, no other */
3109 *force_reuse = TRUE;
3117 /* We can pipeline if we want to. Let's continue looking for
3118 the optimal connection to use, i.e the shortest pipe that is not
3122 /* We have the optimal connection. Let's stop looking. */
3127 /* We can't use the connection if the pipe is full */
3128 if(pipeLen >= max_pipe_len)
3131 /* We can't use the connection if the pipe is penalized */
3132 if(Curl_pipeline_penalized(data, check))
3135 if(pipeLen < best_pipe_len) {
3136 /* This connection has a shorter pipe so far. We'll pick this
3137 and continue searching */
3139 best_pipe_len = pipeLen;
3144 /* We have found a connection. Let's stop searching. */
3154 return TRUE; /* yes, we found one to use! */
3157 return FALSE; /* no matching connecting exists */
3160 /* Mark the connection as 'idle', or close it if the cache is full.
3161 Returns TRUE if the connection is kept, or FALSE if it was closed. */
3163 ConnectionDone(struct SessionHandle *data, struct connectdata *conn)
3165 /* data->multi->maxconnects can be negative, deal with it. */
3166 size_t maxconnects =
3167 (data->multi->maxconnects < 0) ? 0 : data->multi->maxconnects;
3168 struct connectdata *conn_candidate = NULL;
3170 /* Mark the current connection as 'unused' */
3171 conn->inuse = FALSE;
3173 if(maxconnects > 0 &&
3174 data->state.conn_cache->num_connections > maxconnects) {
3175 infof(data, "Connection cache is full, closing the oldest one.\n");
3177 conn_candidate = find_oldest_idle_connection(data);
3179 if(conn_candidate) {
3180 /* Set the connection's owner correctly */
3181 conn_candidate->data = data;
3183 /* the winner gets the honour of being disconnected */
3184 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
3188 return (conn_candidate == conn) ? FALSE : TRUE;
3192 * The given input connection struct pointer is to be stored in the connection
3193 * cache. If the cache is already full, least interesting existing connection
3194 * (if any) gets closed.
3196 * The given connection should be unique. That must've been checked prior to
3199 static CURLcode ConnectionStore(struct SessionHandle *data,
3200 struct connectdata *conn)
3202 static int connection_id_counter = 0;
3206 /* Assign a number to the connection for easier tracking in the log
3208 conn->connection_id = connection_id_counter++;
3210 result = Curl_conncache_add_conn(data->state.conn_cache, conn);
3211 if(result != CURLE_OK)
3212 conn->connection_id = -1;
3217 /* after a TCP connection to the proxy has been verified, this function does
3218 the next magic step.
3220 Note: this function's sub-functions call failf()
3223 CURLcode Curl_connected_proxy(struct connectdata *conn,
3226 if(!conn->bits.proxy || sockindex)
3227 /* this magic only works for the primary socket as the secondary is used
3228 for FTP only and it has FTP specific magic in ftp.c */
3231 switch(conn->proxytype) {
3232 #ifndef CURL_DISABLE_PROXY
3233 case CURLPROXY_SOCKS5:
3234 case CURLPROXY_SOCKS5_HOSTNAME:
3235 return Curl_SOCKS5(conn->proxyuser, conn->proxypasswd,
3236 conn->host.name, conn->remote_port,
3239 case CURLPROXY_SOCKS4:
3240 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3241 conn->remote_port, FIRSTSOCKET, conn, FALSE);
3243 case CURLPROXY_SOCKS4A:
3244 return Curl_SOCKS4(conn->proxyuser, conn->host.name,
3245 conn->remote_port, FIRSTSOCKET, conn, TRUE);
3247 #endif /* CURL_DISABLE_PROXY */
3248 case CURLPROXY_HTTP:
3249 case CURLPROXY_HTTP_1_0:
3250 /* do nothing here. handled later. */
3254 } /* switch proxytype */
3260 * verboseconnect() displays verbose information after a connect
3262 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3263 void Curl_verboseconnect(struct connectdata *conn)
3265 if(conn->data->set.verbose)
3266 infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n",
3267 conn->bits.proxy ? conn->proxy.dispname : conn->host.dispname,
3268 conn->ip_addr_str, conn->port, conn->connection_id);
3272 int Curl_protocol_getsock(struct connectdata *conn,
3273 curl_socket_t *socks,
3276 if(conn->handler->proto_getsock)
3277 return conn->handler->proto_getsock(conn, socks, numsocks);
3278 return GETSOCK_BLANK;
3281 int Curl_doing_getsock(struct connectdata *conn,
3282 curl_socket_t *socks,
3285 if(conn && conn->handler->doing_getsock)
3286 return conn->handler->doing_getsock(conn, socks, numsocks);
3287 return GETSOCK_BLANK;
3291 * We are doing protocol-specific connecting and this is being called over and
3292 * over from the multi interface until the connection phase is done on
3296 CURLcode Curl_protocol_connecting(struct connectdata *conn,
3299 CURLcode result=CURLE_OK;
3301 if(conn && conn->handler->connecting) {
3303 result = conn->handler->connecting(conn, done);
3312 * We are DOING this is being called over and over from the multi interface
3313 * until the DOING phase is done on protocol layer.
3316 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
3318 CURLcode result=CURLE_OK;
3320 if(conn && conn->handler->doing) {
3322 result = conn->handler->doing(conn, done);
3331 * We have discovered that the TCP connection has been successful, we can now
3332 * proceed with some action.
3335 CURLcode Curl_protocol_connect(struct connectdata *conn,
3336 bool *protocol_done)
3338 CURLcode result=CURLE_OK;
3340 *protocol_done = FALSE;
3342 if(conn->bits.tcpconnect[FIRSTSOCKET] && conn->bits.protoconnstart) {
3343 /* We already are connected, get back. This may happen when the connect
3344 worked fine in the first call, like when we connect to a local server
3345 or proxy. Note that we don't know if the protocol is actually done.
3347 Unless this protocol doesn't have any protocol-connect callback, as
3348 then we know we're done. */
3349 if(!conn->handler->connecting)
3350 *protocol_done = TRUE;
3355 if(!conn->bits.protoconnstart) {
3357 result = Curl_proxy_connect(conn);
3361 if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
3362 (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
3363 /* when using an HTTP tunnel proxy, await complete tunnel establishment
3364 before proceeding further. Return CURLE_OK so we'll be called again */
3367 if(conn->handler->connect_it) {
3368 /* is there a protocol-specific connect() procedure? */
3370 /* Call the protocol-specific connect function */
3371 result = conn->handler->connect_it(conn, protocol_done);
3374 *protocol_done = TRUE;
3376 /* it has started, possibly even completed but that knowledge isn't stored
3379 conn->bits.protoconnstart = TRUE;
3382 return result; /* pass back status */
3386 * Helpers for IDNA convertions.
3388 static bool is_ASCII_name(const char *hostname)
3390 const unsigned char *ch = (const unsigned char*)hostname;
3401 * Check if characters in hostname is allowed in Top Level Domain.
3403 static bool tld_check_name(struct SessionHandle *data,
3404 const char *ace_hostname)
3407 char *uc_name = NULL;
3409 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3410 const char *tld_errmsg = "<no msg>";
3415 /* Convert (and downcase) ACE-name back into locale's character set */
3416 rc = idna_to_unicode_lzlz(ace_hostname, &uc_name, 0);
3417 if(rc != IDNA_SUCCESS)
3420 rc = tld_check_lz(uc_name, &err_pos, NULL);
3421 #ifndef CURL_DISABLE_VERBOSE_STRINGS
3422 #ifdef HAVE_TLD_STRERROR
3423 if(rc != TLD_SUCCESS)
3424 tld_errmsg = tld_strerror((Tld_rc)rc);
3426 if(rc == TLD_INVALID)
3427 infof(data, "WARNING: %s; pos %u = `%c'/0x%02X\n",
3428 tld_errmsg, err_pos, uc_name[err_pos],
3429 uc_name[err_pos] & 255);
3430 else if(rc != TLD_SUCCESS)
3431 infof(data, "WARNING: TLD check for %s failed; %s\n",
3432 uc_name, tld_errmsg);
3433 #endif /* CURL_DISABLE_VERBOSE_STRINGS */
3436 if(rc != TLD_SUCCESS)
3444 * Perform any necessary IDN conversion of hostname
3446 static void fix_hostname(struct SessionHandle *data,
3447 struct connectdata *conn, struct hostname *host)
3452 #elif defined(CURL_DISABLE_VERBOSE_STRINGS)
3456 /* set the name we use to display the host name */
3457 host->dispname = host->name;
3458 if(!is_ASCII_name(host->name)) {
3460 /*************************************************************
3461 * Check name for non-ASCII and convert hostname to ACE form.
3462 *************************************************************/
3463 if(stringprep_check_version(LIBIDN_REQUIRED_VERSION)) {
3464 char *ace_hostname = NULL;
3465 int rc = idna_to_ascii_lz(host->name, &ace_hostname, 0);
3466 infof (data, "Input domain encoded as `%s'\n",
3467 stringprep_locale_charset ());
3468 if(rc != IDNA_SUCCESS)
3469 infof(data, "Failed to convert %s to ACE; %s\n",
3470 host->name, Curl_idn_strerror(conn,rc));
3472 /* tld_check_name() displays a warning if the host name contains
3473 "illegal" characters for this TLD */
3474 (void)tld_check_name(data, ace_hostname);
3476 host->encalloc = ace_hostname;
3477 /* change the name pointer to point to the encoded hostname */
3478 host->name = host->encalloc;
3481 #elif defined(USE_WIN32_IDN)
3482 /*************************************************************
3483 * Check name for non-ASCII and convert hostname to ACE form.
3484 *************************************************************/
3485 char *ace_hostname = NULL;
3486 int rc = curl_win32_idn_to_ascii(host->name, &ace_hostname);
3488 infof(data, "Failed to convert %s to ACE;\n",
3491 host->encalloc = ace_hostname;
3492 /* change the name pointer to point to the encoded hostname */
3493 host->name = host->encalloc;
3496 infof(data, "IDN support not present, can't parse Unicode domains\n");
3501 static void llist_dtor(void *user, void *element)
3509 * Allocate and initialize a new connectdata object.
3511 static struct connectdata *allocate_conn(struct SessionHandle *data)
3513 struct connectdata *conn = calloc(1, sizeof(struct connectdata));
3517 conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined
3518 already from start to avoid NULL
3519 situations and checks */
3521 /* and we setup a few fields in case we end up actually using this struct */
3523 conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3524 conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */
3525 conn->connection_id = -1; /* no ID */
3526 conn->port = -1; /* unknown at this point */
3528 /* Default protocol-independent behavior doesn't support persistent
3529 connections, so we set this to force-close. Protocols that support
3530 this need to set this to FALSE in their "curl_do" functions. */
3531 conn->bits.close = TRUE;
3533 /* Store creation time to help future close decision making */
3534 conn->created = Curl_tvnow();
3536 conn->data = data; /* Setup the association between this connection
3537 and the SessionHandle */
3539 conn->proxytype = data->set.proxytype; /* type */
3541 #ifdef CURL_DISABLE_PROXY
3543 conn->bits.proxy = FALSE;
3544 conn->bits.httpproxy = FALSE;
3545 conn->bits.proxy_user_passwd = FALSE;
3546 conn->bits.tunnel_proxy = FALSE;
3548 #else /* CURL_DISABLE_PROXY */
3550 /* note that these two proxy bits are now just on what looks to be
3551 requested, they may be altered down the road */
3552 conn->bits.proxy = (data->set.str[STRING_PROXY] &&
3553 *data->set.str[STRING_PROXY])?TRUE:FALSE;
3554 conn->bits.httpproxy = (conn->bits.proxy &&
3555 (conn->proxytype == CURLPROXY_HTTP ||
3556 conn->proxytype == CURLPROXY_HTTP_1_0))?TRUE:FALSE;
3557 conn->bits.proxy_user_passwd =
3558 (NULL != data->set.str[STRING_PROXYUSERNAME])?TRUE:FALSE;
3559 conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy;
3561 #endif /* CURL_DISABLE_PROXY */
3563 conn->bits.user_passwd = (NULL != data->set.str[STRING_USERNAME])?TRUE:FALSE;
3564 conn->bits.ftp_use_epsv = data->set.ftp_use_epsv;
3565 conn->bits.ftp_use_eprt = data->set.ftp_use_eprt;
3567 conn->verifypeer = data->set.ssl.verifypeer;
3568 conn->verifyhost = data->set.ssl.verifyhost;
3570 conn->ip_version = data->set.ipver;
3572 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
3573 conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
3574 conn->ntlm_auth_hlpr_pid = 0;
3575 conn->challenge_header = NULL;
3576 conn->response_header = NULL;
3579 if(Curl_multi_pipeline_enabled(data->multi) &&
3580 !conn->master_buffer) {
3581 /* Allocate master_buffer to be used for pipelining */
3582 conn->master_buffer = calloc(BUFSIZE, sizeof (char));
3583 if(!conn->master_buffer)
3587 /* Initialize the pipeline lists */
3588 conn->send_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3589 conn->recv_pipe = Curl_llist_alloc((curl_llist_dtor) llist_dtor);
3590 if(!conn->send_pipe || !conn->recv_pipe)
3594 conn->data_prot = PROT_CLEAR;
3597 /* Store the local bind parameters that will be used for this connection */
3598 if(data->set.str[STRING_DEVICE]) {
3599 conn->localdev = strdup(data->set.str[STRING_DEVICE]);
3603 conn->localportrange = data->set.localportrange;
3604 conn->localport = data->set.localport;
3606 /* the close socket stuff needs to be copied to the connection struct as
3607 it may live on without (this specific) SessionHandle */
3608 conn->fclosesocket = data->set.fclosesocket;
3609 conn->closesocket_client = data->set.closesocket_client;
3614 Curl_llist_destroy(conn->send_pipe, NULL);
3615 Curl_llist_destroy(conn->recv_pipe, NULL);
3617 conn->send_pipe = NULL;
3618 conn->recv_pipe = NULL;
3620 Curl_safefree(conn->master_buffer);
3621 Curl_safefree(conn->localdev);
3622 Curl_safefree(conn);
3626 static CURLcode findprotocol(struct SessionHandle *data,
3627 struct connectdata *conn,
3628 const char *protostr)
3630 const struct Curl_handler * const *pp;
3631 const struct Curl_handler *p;
3633 /* Scan protocol handler table and match against 'protostr' to set a few
3634 variables based on the URL. Now that the handler may be changed later
3635 when the protocol specific setup function is called. */
3636 for(pp = protocols; (p = *pp) != NULL; pp++) {
3637 if(Curl_raw_equal(p->scheme, protostr)) {
3638 /* Protocol found in table. Check if allowed */
3639 if(!(data->set.allowed_protocols & p->protocol))
3643 /* it is allowed for "normal" request, now do an extra check if this is
3644 the result of a redirect */
3645 if(data->state.this_is_a_follow &&
3646 !(data->set.redir_protocols & p->protocol))
3650 /* Perform setup complement if some. */
3651 conn->handler = conn->given = p;
3653 /* 'port' and 'remote_port' are set in setup_connection_internals() */
3659 /* The protocol was not found in the table, but we don't have to assign it
3660 to anything since it is already assigned to a dummy-struct in the
3661 create_conn() function when the connectdata struct is allocated. */
3662 failf(data, "Protocol %s not supported or disabled in " LIBCURL_NAME,
3665 return CURLE_UNSUPPORTED_PROTOCOL;
3669 * Parse URL and fill in the relevant members of the connection struct.
3671 static CURLcode parseurlandfillconn(struct SessionHandle *data,
3672 struct connectdata *conn,
3674 char **userp, char **passwdp,
3679 char *path = data->state.path;
3685 bool rebuild_url = FALSE;
3687 *prot_missing = FALSE;
3689 /*************************************************************
3692 * We need to parse the url even when using the proxy, because we will need
3693 * the hostname and port in case we are trying to SSL connect through the
3694 * proxy -- and we don't know if we will need to use SSL until we parse the
3696 ************************************************************/
3697 if((2 == sscanf(data->change.url, "%15[^:]:%[^\n]",
3699 Curl_raw_equal(protobuf, "file")) {
3700 if(path[0] == '/' && path[1] == '/') {
3701 /* Allow omitted hostname (e.g. file:/<path>). This is not strictly
3702 * speaking a valid file: URL by RFC 1738, but treating file:/<path> as
3703 * file://localhost/<path> is similar to how other schemes treat missing
3704 * hostnames. See RFC 1808. */
3706 /* This cannot be done with strcpy() in a portable manner, since the
3707 memory areas overlap! */
3708 memmove(path, path + 2, strlen(path + 2)+1);
3711 * we deal with file://<host>/<path> differently since it supports no
3712 * hostname other than "localhost" and "127.0.0.1", which is unique among
3713 * the URL protocols specified in RFC 1738
3715 if(path[0] != '/') {
3716 /* the URL included a host name, we ignore host names in file:// URLs
3717 as the standards don't define what to do with them */
3718 char *ptr=strchr(path, '/');
3720 /* there was a slash present
3722 RFC1738 (section 3.1, page 5) says:
3724 The rest of the locator consists of data specific to the scheme,
3725 and is known as the "url-path". It supplies the details of how the
3726 specified resource can be accessed. Note that the "/" between the
3727 host (or port) and the url-path is NOT part of the url-path.
3729 As most agents use file://localhost/foo to get '/foo' although the
3730 slash preceding foo is a separator and not a slash for the path,
3731 a URL as file://localhost//foo must be valid as well, to refer to
3732 the same file with an absolute path.
3735 if(ptr[1] && ('/' == ptr[1]))
3736 /* if there was two slashes, we skip the first one as that is then
3737 used truly as a separator */
3740 /* This cannot be made with strcpy, as the memory chunks overlap! */
3741 memmove(path, ptr, strlen(ptr)+1);
3745 protop = "file"; /* protocol string */
3751 if(2 > sscanf(data->change.url,
3752 "%15[^\n:]://%[^\n/?]%[^\n]",
3754 conn->host.name, path)) {
3757 * The URL was badly formatted, let's try the browser-style _without_
3758 * protocol specified like 'http://'.
3760 rc = sscanf(data->change.url, "%[^\n/?]%[^\n]", conn->host.name, path);
3763 * We couldn't even get this format.
3764 * djgpp 2.04 has a sscanf() bug where 'conn->host.name' is
3765 * assigned, but the return value is EOF!
3767 #if defined(__DJGPP__) && (DJGPP_MINOR == 4)
3768 if(!(rc == -1 && *conn->host.name))
3771 failf(data, "<url> malformed");
3772 return CURLE_URL_MALFORMAT;
3777 * Since there was no protocol part specified, we guess what protocol it
3778 * is based on the first letters of the server name.
3781 /* Note: if you add a new protocol, please update the list in
3782 * lib/version.c too! */
3784 if(checkprefix("FTP.", conn->host.name))
3786 else if(checkprefix("DICT.", conn->host.name))
3788 else if(checkprefix("LDAP.", conn->host.name))
3790 else if(checkprefix("IMAP.", conn->host.name))
3792 else if(checkprefix("SMTP.", conn->host.name))
3794 else if(checkprefix("POP3.", conn->host.name))
3800 *prot_missing = TRUE; /* not given in URL */
3806 /* We search for '?' in the host name (but only on the right side of a
3807 * @-letter to allow ?-letters in username and password) to handle things
3808 * like http://example.com?param= (notice the missing '/').
3810 at = strchr(conn->host.name, '@');
3812 query = strchr(at+1, '?');
3814 query = strchr(conn->host.name, '?');
3817 /* We must insert a slash before the '?'-letter in the URL. If the URL had
3818 a slash after the '?', that is where the path currently begins and the
3819 '?string' is still part of the host name.
3821 We must move the trailing part from the host name and put it first in
3822 the path. And have it all prefixed with a slash.
3825 size_t hostlen = strlen(query);
3826 size_t pathlen = strlen(path);
3828 /* move the existing path plus the zero byte forward, to make room for
3829 the host-name part */
3830 memmove(path+hostlen+1, path, pathlen+1);
3832 /* now copy the trailing host part in front of the existing path */
3833 memcpy(path+1, query, hostlen);
3835 path[0]='/'; /* prepend the missing slash */
3838 *query=0; /* now cut off the hostname at the ? */
3841 /* if there's no path set, use a single slash */
3846 /* If the URL is malformatted (missing a '/' after hostname before path) we
3847 * insert a slash here. The only letter except '/' we accept to start a path
3850 if(path[0] == '?') {
3851 /* We need this function to deal with overlapping memory areas. We know
3852 that the memory area 'path' points to is 'urllen' bytes big and that
3853 is bigger than the path. Use +1 to move the zero byte too. */
3854 memmove(&path[1], path, strlen(path)+1);
3859 /* sanitise paths and remove ../ and ./ sequences according to RFC3986 */
3860 char *newp = Curl_dedotdotify(path);
3862 return CURLE_OUT_OF_MEMORY;
3864 if(strcmp(newp, path)) {
3866 free(data->state.pathbuffer);
3867 data->state.pathbuffer = newp;
3868 data->state.path = newp;
3876 * "rebuild_url" means that one or more URL components have been modified so
3877 * we need to generate an updated full version. We need the corrected URL
3878 * when communicating over HTTP proxy and we don't know at this point if
3879 * we're using a proxy or not.
3884 size_t plen = strlen(path); /* new path, should be 1 byte longer than
3886 size_t urllen = strlen(data->change.url); /* original URL length */
3888 size_t prefixlen = strlen(conn->host.name);
3891 prefixlen += strlen(protop) + strlen("://");
3893 reurl = malloc(urllen + 2); /* 2 for zerobyte + slash */
3895 return CURLE_OUT_OF_MEMORY;
3897 /* copy the prefix */
3898 memcpy(reurl, data->change.url, prefixlen);
3900 /* append the trailing piece + zerobyte */
3901 memcpy(&reurl[prefixlen], path, plen + 1);
3903 /* possible free the old one */
3904 if(data->change.url_alloc) {
3905 Curl_safefree(data->change.url);
3906 data->change.url_alloc = FALSE;
3909 infof(data, "Rebuilt URL to: %s\n", reurl);
3911 data->change.url = reurl;
3912 data->change.url_alloc = TRUE; /* free this later */
3916 * Parse the login details from the URL and strip them out of
3919 result = parse_url_login(data, conn, userp, passwdp, optionsp);
3920 if(result != CURLE_OK)
3923 if(conn->host.name[0] == '[') {
3924 /* This looks like an IPv6 address literal. See if there is an address
3926 char *percent = strstr (conn->host.name, "%25");
3929 unsigned long scope = strtoul (percent + 3, &endp, 10);
3931 /* The address scope was well formed. Knock it out of the
3933 memmove(percent, endp, strlen(endp)+1);
3934 if(!data->state.this_is_a_follow)
3935 /* Don't honour a scope given in a Location: header */
3936 conn->scope = (unsigned int)scope;
3939 infof(data, "Invalid IPv6 address format\n");
3944 /* Override any scope that was set above. */
3945 conn->scope = data->set.scope;
3947 /* Remove the fragment part of the path. Per RFC 2396, this is always the
3948 last part of the URI. We are looking for the first '#' so that we deal
3949 gracefully with non conformant URI such as http://example.com#foo#bar. */
3950 fragment = strchr(path, '#');
3954 /* we know the path part ended with a fragment, so we know the full URL
3955 string does too and we need to cut it off from there so it isn't used
3957 fragment = strchr(data->change.url, '#');
3963 * So if the URL was A://B/C#D,
3965 * conn->host.name is B
3966 * data->state.path is /C
3969 return findprotocol(data, conn, protop);
3973 * If we're doing a resumed transfer, we need to setup our stuff
3976 static CURLcode setup_range(struct SessionHandle *data)
3978 struct UrlState *s = &data->state;
3979 s->resume_from = data->set.set_resume_from;
3980 if(s->resume_from || data->set.str[STRING_SET_RANGE]) {
3981 if(s->rangestringalloc)
3985 s->range = aprintf("%" FORMAT_OFF_TU "-", s->resume_from);
3987 s->range = strdup(data->set.str[STRING_SET_RANGE]);
3989 s->rangestringalloc = (s->range)?TRUE:FALSE;
3992 return CURLE_OUT_OF_MEMORY;
3994 /* tell ourselves to fetch this range */
3995 s->use_range = TRUE; /* enable range download */
3998 s->use_range = FALSE; /* disable range download */
4005 * setup_connection_internals() -
4007 * Setup connection internals specific to the requested protocol in the
4008 * SessionHandle. This is inited and setup before the connection is made but
4009 * is about the particular protocol that is to be used.
4011 * This MUST get called after proxy magic has been figured out.
4013 static CURLcode setup_connection_internals(struct connectdata *conn)
4015 const struct Curl_handler * p;
4018 /* in some case in the multi state-machine, we go back to the CONNECT state
4019 and then a second (or third or...) call to this function will be made
4020 without doing a DISCONNECT or DONE in between (since the connection is
4021 yet in place) and therefore this function needs to first make sure
4022 there's no lingering previous data allocated. */
4023 Curl_free_request_state(conn->data);
4025 memset(&conn->data->req, 0, sizeof(struct SingleRequest));
4026 conn->data->req.maxdownload = -1;
4028 conn->socktype = SOCK_STREAM; /* most of them are TCP streams */
4030 /* Perform setup complement if some. */
4033 if(p->setup_connection) {
4034 result = (*p->setup_connection)(conn);
4036 if(result != CURLE_OK)
4039 p = conn->handler; /* May have changed. */
4043 /* we check for -1 here since if proxy was detected already, this
4044 was very likely already set to the proxy port */
4045 conn->port = p->defport;
4047 /* only if remote_port was not already parsed off the URL we use the
4048 default port number */
4049 if(!conn->remote_port)
4050 conn->remote_port = (unsigned short)conn->given->defport;
4056 * Curl_free_request_state() should free temp data that was allocated in the
4057 * SessionHandle for this single request.
4060 void Curl_free_request_state(struct SessionHandle *data)
4062 Curl_safefree(data->req.protop);
4066 #ifndef CURL_DISABLE_PROXY
4067 /****************************************************************
4068 * Checks if the host is in the noproxy list. returns true if it matches
4069 * and therefore the proxy should NOT be used.
4070 ****************************************************************/
4071 static bool check_noproxy(const char* name, const char* no_proxy)
4073 /* no_proxy=domain1.dom,host.domain2.dom
4074 * (a comma-separated list of hosts which should
4075 * not be proxied, or an asterisk to override
4076 * all proxy variables)
4080 const char* separator = ", ";
4081 size_t no_proxy_len;
4085 if(no_proxy && no_proxy[0]) {
4086 if(Curl_raw_equal("*", no_proxy)) {
4090 /* NO_PROXY was specified and it wasn't just an asterisk */
4092 no_proxy_len = strlen(no_proxy);
4093 endptr = strchr(name, ':');
4095 namelen = endptr - name;
4097 namelen = strlen(name);
4099 for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) {
4100 while(tok_start < no_proxy_len &&
4101 strchr(separator, no_proxy[tok_start]) != NULL) {
4102 /* Look for the beginning of the token. */
4106 if(tok_start == no_proxy_len)
4107 break; /* It was all trailing separator chars, no more tokens. */
4109 for(tok_end = tok_start; tok_end < no_proxy_len &&
4110 strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end)
4111 /* Look for the end of the token. */
4114 /* To match previous behaviour, where it was necessary to specify
4115 * ".local.com" to prevent matching "notlocal.com", we will leave
4118 if(no_proxy[tok_start] == '.')
4121 if((tok_end - tok_start) <= namelen) {
4122 /* Match the last part of the name to the domain we are checking. */
4123 const char *checkn = name + namelen - (tok_end - tok_start);
4124 if(Curl_raw_nequal(no_proxy + tok_start, checkn,
4125 tok_end - tok_start)) {
4126 if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') {
4127 /* We either have an exact match, or the previous character is a .
4128 * so it is within the same domain, so no proxy for this host.
4133 } /* if((tok_end - tok_start) <= namelen) */
4134 } /* for(tok_start = 0; tok_start < no_proxy_len;
4135 tok_start = tok_end + 1) */
4136 } /* NO_PROXY was specified and it wasn't just an asterisk */
4141 /****************************************************************
4142 * Detect what (if any) proxy to use. Remember that this selects a host
4143 * name and is not limited to HTTP proxies only.
4144 * The returned pointer must be freed by the caller (unless NULL)
4145 ****************************************************************/
4146 static char *detect_proxy(struct connectdata *conn)
4150 #ifndef CURL_DISABLE_HTTP
4151 /* If proxy was not specified, we check for default proxy environment
4152 * variables, to enable i.e Lynx compliance:
4154 * http_proxy=http://some.server.dom:port/
4155 * https_proxy=http://some.server.dom:port/
4156 * ftp_proxy=http://some.server.dom:port/
4157 * no_proxy=domain1.dom,host.domain2.dom
4158 * (a comma-separated list of hosts which should
4159 * not be proxied, or an asterisk to override
4160 * all proxy variables)
4161 * all_proxy=http://some.server.dom:port/
4162 * (seems to exist for the CERN www lib. Probably
4163 * the first to check for.)
4165 * For compatibility, the all-uppercase versions of these variables are
4166 * checked if the lowercase versions don't exist.
4168 char *no_proxy=NULL;
4169 char proxy_env[128];
4171 no_proxy=curl_getenv("no_proxy");
4173 no_proxy=curl_getenv("NO_PROXY");
4175 if(!check_noproxy(conn->host.name, no_proxy)) {
4176 /* It was not listed as without proxy */
4177 const char *protop = conn->handler->scheme;
4178 char *envp = proxy_env;
4181 /* Now, build <protocol>_proxy and check for such a one to use */
4183 *envp++ = (char)tolower((int)*protop++);
4186 strcpy(envp, "_proxy");
4188 /* read the protocol proxy: */
4189 prox=curl_getenv(proxy_env);
4192 * We don't try the uppercase version of HTTP_PROXY because of
4195 * When curl is used in a webserver application
4196 * environment (cgi or php), this environment variable can
4197 * be controlled by the web server user by setting the
4198 * http header 'Proxy:' to some value.
4200 * This can cause 'internal' http/ftp requests to be
4201 * arbitrarily redirected by any external attacker.
4203 if(!prox && !Curl_raw_equal("http_proxy", proxy_env)) {
4204 /* There was no lowercase variable, try the uppercase version: */
4205 Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
4206 prox=curl_getenv(proxy_env);
4209 if(prox && *prox) { /* don't count "" strings */
4210 proxy = prox; /* use this */
4213 proxy = curl_getenv("all_proxy"); /* default proxy to use */
4215 proxy=curl_getenv("ALL_PROXY");
4217 } /* if(!check_noproxy(conn->host.name, no_proxy)) - it wasn't specified
4222 #else /* !CURL_DISABLE_HTTP */
4225 #endif /* CURL_DISABLE_HTTP */
4231 * If this is supposed to use a proxy, we need to figure out the proxy
4232 * host name, so that we can re-use an existing connection
4233 * that may exist registered to the same proxy host.
4234 * proxy will be freed before this function returns.
4236 static CURLcode parse_proxy(struct SessionHandle *data,
4237 struct connectdata *conn, char *proxy)
4242 /* We use 'proxyptr' to point to the proxy name from now on... */
4247 /* We do the proxy host string parsing here. We want the host name and the
4248 * port name. Accept a protocol:// prefix
4251 /* Parse the protocol part if present */
4252 endofprot = strstr(proxy, "://");
4254 proxyptr = endofprot+3;
4255 if(checkprefix("socks5h", proxy))
4256 conn->proxytype = CURLPROXY_SOCKS5_HOSTNAME;
4257 else if(checkprefix("socks5", proxy))
4258 conn->proxytype = CURLPROXY_SOCKS5;
4259 else if(checkprefix("socks4a", proxy))
4260 conn->proxytype = CURLPROXY_SOCKS4A;
4261 else if(checkprefix("socks4", proxy) || checkprefix("socks", proxy))
4262 conn->proxytype = CURLPROXY_SOCKS4;
4263 /* Any other xxx:// : change to http proxy */
4266 proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
4268 /* Is there a username and password given in this proxy url? */
4269 atsign = strchr(proxyptr, '@');
4271 CURLcode res = CURLE_OK;
4272 char *proxyuser = NULL;
4273 char *proxypasswd = NULL;
4275 res = parse_login_details(proxyptr, atsign - proxyptr,
4276 &proxyuser, &proxypasswd, NULL);
4278 /* found user and password, rip them out. note that we are
4279 unescaping them, as there is otherwise no way to have a
4280 username or password with reserved characters like ':' in
4282 Curl_safefree(conn->proxyuser);
4283 if(proxyuser && strlen(proxyuser) < MAX_CURL_USER_LENGTH)
4284 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4286 conn->proxyuser = strdup("");
4288 if(!conn->proxyuser)
4289 res = CURLE_OUT_OF_MEMORY;
4291 Curl_safefree(conn->proxypasswd);
4292 if(proxypasswd && strlen(proxypasswd) < MAX_CURL_PASSWORD_LENGTH)
4293 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4295 conn->proxypasswd = strdup("");
4297 if(!conn->proxypasswd)
4298 res = CURLE_OUT_OF_MEMORY;
4302 conn->bits.proxy_user_passwd = TRUE; /* enable it */
4303 atsign++; /* the right side of the @-letter */
4306 proxyptr = atsign; /* now use this instead */
4308 res = CURLE_OUT_OF_MEMORY;
4312 Curl_safefree(proxyuser);
4313 Curl_safefree(proxypasswd);
4319 /* start scanning for port number at this point */
4322 /* detect and extract RFC2732-style IPv6-addresses */
4323 if(*proxyptr == '[') {
4324 char *ptr = ++proxyptr; /* advance beyond the initial bracket */
4325 while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
4329 /* yeps, it ended nicely with a bracket as well */
4332 infof(data, "Invalid IPv6 address format\n");
4334 /* Note that if this didn't end with a bracket, we still advanced the
4335 * proxyptr first, but I can't see anything wrong with that as no host
4336 * name nor a numeric can legally start with a bracket.
4340 /* Get port number off proxy.server.com:1080 */
4341 prox_portno = strchr(portptr, ':');
4343 *prox_portno = 0x0; /* cut off number from host name */
4345 /* now set the local port number */
4346 conn->port = strtol(prox_portno, NULL, 10);
4349 if(proxyptr[0]=='/')
4350 /* If the first character in the proxy string is a slash, fail
4351 immediately. The following code will otherwise clear the string which
4352 will lead to code running as if no proxy was set! */
4353 return CURLE_COULDNT_RESOLVE_PROXY;
4355 /* without a port number after the host name, some people seem to use
4356 a slash so we strip everything from the first slash */
4357 atsign = strchr(proxyptr, '/');
4359 *atsign = 0x0; /* cut off path part from host name */
4361 if(data->set.proxyport)
4362 /* None given in the proxy string, then get the default one if it is
4364 conn->port = data->set.proxyport;
4367 /* now, clone the cleaned proxy host name */
4368 conn->proxy.rawalloc = strdup(proxyptr);
4369 conn->proxy.name = conn->proxy.rawalloc;
4371 if(!conn->proxy.rawalloc)
4372 return CURLE_OUT_OF_MEMORY;
4378 * Extract the user and password from the authentication string
4380 static CURLcode parse_proxy_auth(struct SessionHandle *data,
4381 struct connectdata *conn)
4383 char proxyuser[MAX_CURL_USER_LENGTH]="";
4384 char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="";
4386 if(data->set.str[STRING_PROXYUSERNAME] != NULL) {
4387 strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME],
4388 MAX_CURL_USER_LENGTH);
4389 proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/
4391 if(data->set.str[STRING_PROXYPASSWORD] != NULL) {
4392 strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD],
4393 MAX_CURL_PASSWORD_LENGTH);
4394 proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/
4397 conn->proxyuser = curl_easy_unescape(data, proxyuser, 0, NULL);
4398 if(!conn->proxyuser)
4399 return CURLE_OUT_OF_MEMORY;
4401 conn->proxypasswd = curl_easy_unescape(data, proxypasswd, 0, NULL);
4402 if(!conn->proxypasswd)
4403 return CURLE_OUT_OF_MEMORY;
4407 #endif /* CURL_DISABLE_PROXY */
4412 * Parse the login details (user name, password and options) from the URL and
4413 * strip them out of the host name
4415 * Inputs: data->set.use_netrc (CURLOPT_NETRC)
4418 * Outputs: (almost :- all currently undefined)
4419 * conn->bits.user_passwd - non-zero if non-default passwords exist
4420 * user - non-zero length if defined
4421 * passwd - non-zero length if defined
4422 * options - non-zero length if defined
4423 * conn->host.name - remove user name and password
4425 static CURLcode parse_url_login(struct SessionHandle *data,
4426 struct connectdata *conn,
4427 char **user, char **passwd, char **options)
4429 CURLcode result = CURLE_OK;
4431 char *passwdp = NULL;
4432 char *optionsp = NULL;
4434 /* At this point, we're hoping all the other special cases have
4435 * been taken care of, so conn->host.name is at most
4436 * [user[:password][;options]]@]hostname
4438 * We need somewhere to put the embedded details, so do that first.
4441 char *ptr = strchr(conn->host.name, '@');
4442 char *login = conn->host.name;
4444 DEBUGASSERT(!**user);
4445 DEBUGASSERT(!**passwd);
4446 DEBUGASSERT(!**options);
4451 /* We will now try to extract the
4452 * possible login information in a string like:
4453 * ftp://user:password@ftp.my.site:8021/README */
4454 conn->host.name = ++ptr;
4456 /* So the hostname is sane. Only bother interpreting the
4457 * results if we could care. It could still be wasted
4458 * work because it might be overtaken by the programmatically
4459 * set user/passwd, but doing that first adds more cases here :-(
4462 if(data->set.use_netrc == CURL_NETRC_REQUIRED)
4465 /* We could use the login information in the URL so extract it */
4466 result = parse_login_details(login, ptr - login - 1,
4467 &userp, &passwdp, &optionsp);
4468 if(result != CURLE_OK)
4474 /* We have a user in the URL */
4475 conn->bits.userpwd_in_url = TRUE;
4476 conn->bits.user_passwd = TRUE; /* enable user+password */
4478 /* Decode the user */
4479 newname = curl_easy_unescape(data, userp, 0, NULL);
4481 result = CURLE_OUT_OF_MEMORY;
4490 /* We have a password in the URL so decode it */
4491 char *newpasswd = curl_easy_unescape(data, passwdp, 0, NULL);
4493 result = CURLE_OUT_OF_MEMORY;
4498 *passwd = newpasswd;
4502 /* We have an options list in the URL so decode it */
4503 char *newoptions = curl_easy_unescape(data, optionsp, 0, NULL);
4505 result = CURLE_OUT_OF_MEMORY;
4510 *options = newoptions;
4516 Curl_safefree(userp);
4517 Curl_safefree(passwdp);
4518 Curl_safefree(optionsp);
4524 * parse_login_details()
4526 * This is used to parse a login string for user name, password and options in
4527 * the following formats:
4531 * user:password;options
4533 * user;options:password
4541 * login [in] - The login string.
4542 * len [in] - The length of the login string.
4543 * userp [in/out] - The address where a pointer to newly allocated memory
4544 * holding the user will be stored upon completion.
4545 * passdwp [in/out] - The address where a pointer to newly allocated memory
4546 * holding the password will be stored upon completion.
4547 * optionsp [in/out] - The address where a pointer to newly allocated memory
4548 * holding the options will be stored upon completion.
4550 * Returns CURLE_OK on success.
4552 static CURLcode parse_login_details(const char *login, const size_t len,
4553 char **userp, char **passwdp,
4556 CURLcode result = CURLE_OK;
4560 const char *psep = NULL;
4561 const char *osep = NULL;
4566 /* Attempt to find the password separator */
4568 psep = strchr(login, ':');
4570 /* Within the constraint of the login string */
4571 if(psep >= login + len)
4575 /* Attempt to find the options separator */
4577 osep = strchr(login, ';');
4579 /* Within the constraint of the login string */
4580 if(osep >= login + len)
4584 /* Calculate the portion lengths */
4586 (size_t)(osep && psep > osep ? osep - login : psep - login) :
4587 (osep ? (size_t)(osep - login) : len));
4589 (osep && osep > psep ? (size_t)(osep - psep) :
4590 (size_t)(login + len - psep)) - 1 : 0);
4592 (psep && psep > osep ? (size_t)(psep - osep) :
4593 (size_t)(login + len - osep)) - 1 : 0);
4595 /* Allocate the user portion buffer */
4597 ubuf = malloc(ulen + 1);
4599 result = CURLE_OUT_OF_MEMORY;
4602 /* Allocate the password portion buffer */
4603 if(!result && passwdp && plen) {
4604 pbuf = malloc(plen + 1);
4606 Curl_safefree(ubuf);
4607 result = CURLE_OUT_OF_MEMORY;
4611 /* Allocate the options portion buffer */
4612 if(!result && optionsp && olen) {
4613 obuf = malloc(olen + 1);
4615 Curl_safefree(pbuf);
4616 Curl_safefree(ubuf);
4617 result = CURLE_OUT_OF_MEMORY;
4622 /* Store the user portion if necessary */
4624 memcpy(ubuf, login, ulen);
4626 Curl_safefree(*userp);
4630 /* Store the password portion if necessary */
4632 memcpy(pbuf, psep + 1, plen);
4634 Curl_safefree(*passwdp);
4638 /* Store the options portion if necessary */
4640 memcpy(obuf, osep + 1, olen);
4642 Curl_safefree(*optionsp);
4650 /*************************************************************
4651 * Figure out the remote port number and fix it in the URL
4653 * No matter if we use a proxy or not, we have to figure out the remote
4654 * port number of various reasons.
4656 * To be able to detect port number flawlessly, we must not confuse them
4657 * IPv6-specified addresses in the [0::1] style. (RFC2732)
4659 * The conn->host.name is currently [user:passwd@]host[:port] where host
4660 * could be a hostname, IPv4 address or IPv6 address.
4662 * The port number embedded in the URL is replaced, if necessary.
4663 *************************************************************/
4664 static CURLcode parse_remote_port(struct SessionHandle *data,
4665 struct connectdata *conn)
4670 /* Note that at this point, the IPv6 address cannot contain any scope
4671 suffix as that has already been removed in the parseurlandfillconn()
4673 if((1 == sscanf(conn->host.name, "[%*45[0123456789abcdefABCDEF:.]%c",
4675 (']' == endbracket)) {
4676 /* this is a RFC2732-style specified IP-address */
4677 conn->bits.ipv6_ip = TRUE;
4679 conn->host.name++; /* skip over the starting bracket */
4680 portptr = strchr(conn->host.name, ']');
4682 *portptr++ = '\0'; /* zero terminate, killing the bracket */
4684 portptr = NULL; /* no port number available */
4689 struct in6_addr in6;
4690 if(Curl_inet_pton(AF_INET6, conn->host.name, &in6) > 0) {
4691 /* This is a numerical IPv6 address, meaning this is a wrongly formatted
4693 failf(data, "IPv6 numerical address used in URL without brackets");
4694 return CURLE_URL_MALFORMAT;
4698 portptr = strrchr(conn->host.name, ':');
4701 if(data->set.use_port && data->state.allow_port) {
4702 /* if set, we use this and ignore the port possibly given in the URL */
4703 conn->remote_port = (unsigned short)data->set.use_port;
4705 *portptr = '\0'; /* cut off the name there anyway - if there was a port
4706 number - since the port number is to be ignored! */
4707 if(conn->bits.httpproxy) {
4708 /* we need to create new URL with the new port number */
4712 if(conn->bits.type_set)
4713 snprintf(type, sizeof(type), ";type=%c",
4714 data->set.prefer_ascii?'A':
4715 (data->set.ftp_list_only?'D':'I'));
4718 * This synthesized URL isn't always right--suffixes like ;type=A are
4719 * stripped off. It would be better to work directly from the original
4720 * URL and simply replace the port part of it.
4722 url = aprintf("%s://%s%s%s:%hu%s%s%s", conn->given->scheme,
4723 conn->bits.ipv6_ip?"[":"", conn->host.name,
4724 conn->bits.ipv6_ip?"]":"", conn->remote_port,
4725 data->state.slash_removed?"/":"", data->state.path,
4728 return CURLE_OUT_OF_MEMORY;
4730 if(data->change.url_alloc) {
4731 Curl_safefree(data->change.url);
4732 data->change.url_alloc = FALSE;
4735 data->change.url = url;
4736 data->change.url_alloc = TRUE;
4740 /* no CURLOPT_PORT given, extract the one from the URL */
4745 port=strtoul(portptr+1, &rest, 10); /* Port number must be decimal */
4747 if(rest != (portptr+1) && *rest == '\0') {
4748 /* The colon really did have only digits after it,
4749 * so it is either a port number or a mistake */
4751 if(port > 0xffff) { /* Single unix standard says port numbers are
4753 failf(data, "Port number too large: %lu", port);
4754 return CURLE_URL_MALFORMAT;
4757 *portptr = '\0'; /* cut off the name there */
4758 conn->remote_port = curlx_ultous(port);
4761 /* Browser behavior adaptation. If there's a colon with no digits after,
4762 just cut off the name there which makes us ignore the colon and just
4763 use the default port. Firefox and Chrome both do that. */
4770 * Override the login details from the URL with that in the CURLOPT_USERPWD
4771 * option or a .netrc file, if applicable.
4773 static CURLcode override_login(struct SessionHandle *data,
4774 struct connectdata *conn,
4775 char **userp, char **passwdp, char **optionsp)
4777 if(data->set.str[STRING_USERNAME]) {
4779 *userp = strdup(data->set.str[STRING_USERNAME]);
4781 return CURLE_OUT_OF_MEMORY;
4784 if(data->set.str[STRING_PASSWORD]) {
4786 *passwdp = strdup(data->set.str[STRING_PASSWORD]);
4788 return CURLE_OUT_OF_MEMORY;
4791 if(data->set.str[STRING_OPTIONS]) {
4793 *optionsp = strdup(data->set.str[STRING_OPTIONS]);
4795 return CURLE_OUT_OF_MEMORY;
4798 conn->bits.netrc = FALSE;
4799 if(data->set.use_netrc != CURL_NETRC_IGNORED) {
4800 if(Curl_parsenetrc(conn->host.name,
4802 data->set.str[STRING_NETRC_FILE])) {
4803 infof(data, "Couldn't find host %s in the "
4804 DOT_CHAR "netrc file; using defaults\n",
4808 /* set bits.netrc TRUE to remember that we got the name from a .netrc
4809 file, so that it is safe to use even if we followed a Location: to a
4810 different host or similar. */
4811 conn->bits.netrc = TRUE;
4813 conn->bits.user_passwd = TRUE; /* enable user+password */
4821 * Set password so it's available in the connection.
4823 static CURLcode set_login(struct connectdata *conn,
4824 const char *user, const char *passwd,
4825 const char *options)
4827 CURLcode result = CURLE_OK;
4829 /* If our protocol needs a password and we have none, use the defaults */
4830 if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) {
4831 /* Store the default user */
4832 conn->user = strdup(CURL_DEFAULT_USER);
4834 /* Store the default password */
4836 conn->passwd = strdup(CURL_DEFAULT_PASSWORD);
4838 conn->passwd = NULL;
4840 /* This is the default password, so DON'T set conn->bits.user_passwd */
4843 /* Store the user, zero-length if not set */
4844 conn->user = strdup(user);
4846 /* Store the password (only if user is present), zero-length if not set */
4848 conn->passwd = strdup(passwd);
4850 conn->passwd = NULL;
4853 if(!conn->user || !conn->passwd)
4854 result = CURLE_OUT_OF_MEMORY;
4856 /* Store the options, null if not set */
4857 if(!result && options[0]) {
4858 conn->options = strdup(options);
4861 result = CURLE_OUT_OF_MEMORY;
4867 /*************************************************************
4868 * Resolve the address of the server or proxy
4869 *************************************************************/
4870 static CURLcode resolve_server(struct SessionHandle *data,
4871 struct connectdata *conn,
4874 CURLcode result=CURLE_OK;
4875 long timeout_ms = Curl_timeleft(data, NULL, TRUE);
4877 /*************************************************************
4878 * Resolve the name of the server or proxy
4879 *************************************************************/
4880 if(conn->bits.reuse)
4881 /* We're reusing the connection - no need to resolve anything, and
4882 fix_hostname() was called already in create_conn() for the re-use
4887 /* this is a fresh connect */
4889 struct Curl_dns_entry *hostaddr;
4891 /* set a pointer to the hostname we display */
4892 fix_hostname(data, conn, &conn->host);
4894 if(!conn->proxy.name || !*conn->proxy.name) {
4895 /* If not connecting via a proxy, extract the port from the URL, if it is
4896 * there, thus overriding any defaults that might have been set above. */
4897 conn->port = conn->remote_port; /* it is the same port */
4899 /* Resolve target host right on */
4900 rc = Curl_resolv_timeout(conn, conn->host.name, (int)conn->port,
4901 &hostaddr, timeout_ms);
4902 if(rc == CURLRESOLV_PENDING)
4905 else if(rc == CURLRESOLV_TIMEDOUT)
4906 result = CURLE_OPERATION_TIMEDOUT;
4908 else if(!hostaddr) {
4909 failf(data, "Couldn't resolve host '%s'", conn->host.dispname);
4910 result = CURLE_COULDNT_RESOLVE_HOST;
4911 /* don't return yet, we need to clean up the timeout first */
4915 /* This is a proxy that hasn't been resolved yet. */
4917 /* IDN-fix the proxy name */
4918 fix_hostname(data, conn, &conn->proxy);
4921 rc = Curl_resolv_timeout(conn, conn->proxy.name, (int)conn->port,
4922 &hostaddr, timeout_ms);
4924 if(rc == CURLRESOLV_PENDING)
4927 else if(rc == CURLRESOLV_TIMEDOUT)
4928 result = CURLE_OPERATION_TIMEDOUT;
4930 else if(!hostaddr) {
4931 failf(data, "Couldn't resolve proxy '%s'", conn->proxy.dispname);
4932 result = CURLE_COULDNT_RESOLVE_PROXY;
4933 /* don't return yet, we need to clean up the timeout first */
4936 DEBUGASSERT(conn->dns_entry == NULL);
4937 conn->dns_entry = hostaddr;
4944 * Cleanup the connection just allocated before we can move along and use the
4945 * previously existing one. All relevant data is copied over and old_conn is
4946 * ready for freeing once this function returns.
4948 static void reuse_conn(struct connectdata *old_conn,
4949 struct connectdata *conn)
4951 if(old_conn->proxy.rawalloc)
4952 free(old_conn->proxy.rawalloc);
4954 /* free the SSL config struct from this connection struct as this was
4955 allocated in vain and is targeted for destruction */
4956 Curl_free_ssl_config(&old_conn->ssl_config);
4958 conn->data = old_conn->data;
4960 /* get the user+password information from the old_conn struct since it may
4961 * be new for this request even when we re-use an existing connection */
4962 conn->bits.user_passwd = old_conn->bits.user_passwd;
4963 if(conn->bits.user_passwd) {
4964 /* use the new user name and password though */
4965 Curl_safefree(conn->user);
4966 Curl_safefree(conn->passwd);
4967 conn->user = old_conn->user;
4968 conn->passwd = old_conn->passwd;
4969 old_conn->user = NULL;
4970 old_conn->passwd = NULL;
4973 conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd;
4974 if(conn->bits.proxy_user_passwd) {
4975 /* use the new proxy user name and proxy password though */
4976 Curl_safefree(conn->proxyuser);
4977 Curl_safefree(conn->proxypasswd);
4978 conn->proxyuser = old_conn->proxyuser;
4979 conn->proxypasswd = old_conn->proxypasswd;
4980 old_conn->proxyuser = NULL;
4981 old_conn->proxypasswd = NULL;
4984 /* host can change, when doing keepalive with a proxy or if the case is
4985 different this time etc */
4986 Curl_safefree(conn->host.rawalloc);
4987 conn->host=old_conn->host;
4989 /* persist connection info in session handle */
4990 Curl_persistconninfo(conn);
4993 conn->bits.reuse = TRUE; /* yes, we're re-using here */
4995 Curl_safefree(old_conn->user);
4996 Curl_safefree(old_conn->passwd);
4997 Curl_safefree(old_conn->proxyuser);
4998 Curl_safefree(old_conn->proxypasswd);
4999 Curl_safefree(old_conn->localdev);
5001 Curl_llist_destroy(old_conn->send_pipe, NULL);
5002 Curl_llist_destroy(old_conn->recv_pipe, NULL);
5004 old_conn->send_pipe = NULL;
5005 old_conn->recv_pipe = NULL;
5007 Curl_safefree(old_conn->master_buffer);
5011 * create_conn() sets up a new connectdata struct, or re-uses an already
5012 * existing one, and resolves host name.
5014 * if this function returns CURLE_OK and *async is set to TRUE, the resolve
5015 * response will be coming asynchronously. If *async is FALSE, the name is
5018 * @param data The sessionhandle pointer
5019 * @param in_connect is set to the next connection data pointer
5020 * @param async is set TRUE when an async DNS resolution is pending
5021 * @see Curl_setup_conn()
5023 * *NOTE* this function assigns the conn->data pointer!
5026 static CURLcode create_conn(struct SessionHandle *data,
5027 struct connectdata **in_connect,
5030 CURLcode result = CURLE_OK;
5031 struct connectdata *conn;
5032 struct connectdata *conn_temp = NULL;
5035 char *passwd = NULL;
5036 char *options = NULL;
5039 bool prot_missing = FALSE;
5040 bool no_connections_available = FALSE;
5042 size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
5043 size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
5047 /*************************************************************
5049 *************************************************************/
5051 if(!data->change.url) {
5052 result = CURLE_URL_MALFORMAT;
5056 /* First, split up the current URL in parts so that we can use the
5057 parts for checking against the already present connections. In order
5058 to not have to modify everything at once, we allocate a temporary
5059 connection data struct and fill in for comparison purposes. */
5060 conn = allocate_conn(data);
5063 result = CURLE_OUT_OF_MEMORY;
5067 /* We must set the return variable as soon as possible, so that our
5068 parent can cleanup any possible allocs we may have done before
5072 /* This initing continues below, see the comment "Continue connectdata
5073 * initialization here" */
5075 /***********************************************************
5076 * We need to allocate memory to store the path in. We get the size of the
5077 * full URL to be sure, and we need to make it at least 256 bytes since
5078 * other parts of the code will rely on this fact
5079 ***********************************************************/
5080 #define LEAST_PATH_ALLOC 256
5081 urllen=strlen(data->change.url);
5082 if(urllen < LEAST_PATH_ALLOC)
5083 urllen=LEAST_PATH_ALLOC;
5086 * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
5087 * 1 - an extra terminating zero
5088 * 2 - an extra slash (in case a syntax like "www.host.com?moo" is used)
5091 Curl_safefree(data->state.pathbuffer);
5092 data->state.path = NULL;
5094 data->state.pathbuffer = malloc(urllen+2);
5095 if(NULL == data->state.pathbuffer) {
5096 result = CURLE_OUT_OF_MEMORY; /* really bad error */
5099 data->state.path = data->state.pathbuffer;
5101 conn->host.rawalloc = malloc(urllen+2);
5102 if(NULL == conn->host.rawalloc) {
5103 Curl_safefree(data->state.pathbuffer);
5104 data->state.path = NULL;
5105 result = CURLE_OUT_OF_MEMORY;
5109 conn->host.name = conn->host.rawalloc;
5110 conn->host.name[0] = 0;
5113 passwd = strdup("");
5114 options = strdup("");
5115 if(!user || !passwd || !options) {
5116 result = CURLE_OUT_OF_MEMORY;
5120 result = parseurlandfillconn(data, conn, &prot_missing, &user, &passwd,
5122 if(result != CURLE_OK)
5125 /*************************************************************
5126 * No protocol part in URL was used, add it!
5127 *************************************************************/
5129 /* We're guessing prefixes here and if we're told to use a proxy or if
5130 we're gonna follow a Location: later or... then we need the protocol
5131 part added so that we have a valid URL. */
5134 reurl = aprintf("%s://%s", conn->handler->scheme, data->change.url);
5137 result = CURLE_OUT_OF_MEMORY;
5141 if(data->change.url_alloc) {
5142 Curl_safefree(data->change.url);
5143 data->change.url_alloc = FALSE;
5146 data->change.url = reurl;
5147 data->change.url_alloc = TRUE; /* free this later */
5150 /*************************************************************
5151 * If the protocol can't handle url query strings, then cut
5152 * of the unhandable part
5153 *************************************************************/
5154 if((conn->given->flags&PROTOPT_NOURLQUERY)) {
5155 char *path_q_sep = strchr(conn->data->state.path, '?');
5157 /* according to rfc3986, allow the query (?foo=bar)
5158 also on protocols that can't handle it.
5160 cut the string-part after '?'
5163 /* terminate the string */
5168 if(data->set.str[STRING_BEARER]) {
5169 conn->xoauth2_bearer = strdup(data->set.str[STRING_BEARER]);
5170 if(!conn->xoauth2_bearer) {
5171 return CURLE_OUT_OF_MEMORY;
5175 #ifndef CURL_DISABLE_PROXY
5176 /*************************************************************
5177 * Extract the user and password from the authentication string
5178 *************************************************************/
5179 if(conn->bits.proxy_user_passwd) {
5180 result = parse_proxy_auth(data, conn);
5181 if(result != CURLE_OK)
5185 /*************************************************************
5186 * Detect what (if any) proxy to use
5187 *************************************************************/
5188 if(data->set.str[STRING_PROXY]) {
5189 proxy = strdup(data->set.str[STRING_PROXY]);
5190 /* if global proxy is set, this is it */
5192 failf(data, "memory shortage");
5193 result = CURLE_OUT_OF_MEMORY;
5198 if(data->set.str[STRING_NOPROXY] &&
5199 check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY])) {
5201 free(proxy); /* proxy is in exception list */
5206 proxy = detect_proxy(conn);
5208 if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) {
5209 free(proxy); /* Don't bother with an empty proxy string or if the
5210 protocol doesn't work with network */
5214 /***********************************************************************
5215 * If this is supposed to use a proxy, we need to figure out the proxy host
5216 * name, proxy type and port number, so that we can re-use an existing
5217 * connection that may exist registered to the same proxy host.
5218 ***********************************************************************/
5220 result = parse_proxy(data, conn, proxy);
5222 Curl_safefree(proxy); /* parse_proxy copies the proxy string */
5227 if((conn->proxytype == CURLPROXY_HTTP) ||
5228 (conn->proxytype == CURLPROXY_HTTP_1_0)) {
5229 #ifdef CURL_DISABLE_HTTP
5230 /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */
5231 result = CURLE_UNSUPPORTED_PROTOCOL;
5234 /* force this connection's protocol to become HTTP if not already
5235 compatible - if it isn't tunneling through */
5236 if(!(conn->handler->protocol & CURLPROTO_HTTP) &&
5237 !conn->bits.tunnel_proxy)
5238 conn->handler = &Curl_handler_http;
5240 conn->bits.httpproxy = TRUE;
5244 conn->bits.httpproxy = FALSE; /* not a HTTP proxy */
5245 conn->bits.proxy = TRUE;
5248 /* we aren't using the proxy after all... */
5249 conn->bits.proxy = FALSE;
5250 conn->bits.httpproxy = FALSE;
5251 conn->bits.proxy_user_passwd = FALSE;
5252 conn->bits.tunnel_proxy = FALSE;
5255 #endif /* CURL_DISABLE_PROXY */
5257 /*************************************************************
5258 * If the protocol is using SSL and HTTP proxy is used, we set
5259 * the tunnel_proxy bit.
5260 *************************************************************/
5261 if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
5262 conn->bits.tunnel_proxy = TRUE;
5264 /*************************************************************
5265 * Figure out the remote port number and fix it in the URL
5266 *************************************************************/
5267 result = parse_remote_port(data, conn);
5268 if(result != CURLE_OK)
5271 /* Check for overridden login details and set them accordingly so they
5272 they are known when protocol->setup_connection is called! */
5273 result = override_login(data, conn, &user, &passwd, &options);
5274 if(result != CURLE_OK)
5276 result = set_login(conn, user, passwd, options);
5277 if(result != CURLE_OK)
5280 /*************************************************************
5281 * Setup internals depending on protocol. Needs to be done after
5282 * we figured out what/if proxy to use.
5283 *************************************************************/
5284 result = setup_connection_internals(conn);
5285 if(result != CURLE_OK)
5288 conn->recv[FIRSTSOCKET] = Curl_recv_plain;
5289 conn->send[FIRSTSOCKET] = Curl_send_plain;
5290 conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
5291 conn->send[SECONDARYSOCKET] = Curl_send_plain;
5293 /***********************************************************************
5294 * file: is a special case in that it doesn't need a network connection
5295 ***********************************************************************/
5296 #ifndef CURL_DISABLE_FILE
5297 if(conn->handler->flags & PROTOPT_NONETWORK) {
5299 /* this is supposed to be the connect function so we better at least check
5300 that the file is present here! */
5301 DEBUGASSERT(conn->handler->connect_it);
5302 result = conn->handler->connect_it(conn, &done);
5304 /* Setup a "faked" transfer that'll do nothing */
5305 if(CURLE_OK == result) {
5307 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
5309 ConnectionStore(data, conn);
5312 * Setup whatever necessary for a resumed transfer
5314 result = setup_range(data);
5316 DEBUGASSERT(conn->handler->done);
5317 /* we ignore the return code for the protocol-specific DONE */
5318 (void)conn->handler->done(conn, result, FALSE);
5322 Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
5323 -1, NULL); /* no upload */
5326 /* since we skip do_init() */
5333 /* Get a cloned copy of the SSL config situation stored in the
5334 connection struct. But to get this going nicely, we must first make
5335 sure that the strings in the master copy are pointing to the correct
5336 strings in the session handle strings array!
5338 Keep in mind that the pointers in the master copy are pointing to strings
5339 that will be freed as part of the SessionHandle struct, but all cloned
5340 copies will be separately allocated.
5342 data->set.ssl.CApath = data->set.str[STRING_SSL_CAPATH];
5343 data->set.ssl.CAfile = data->set.str[STRING_SSL_CAFILE];
5344 data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
5345 data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
5346 data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
5347 data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
5348 data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
5350 data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
5351 data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
5354 if(!Curl_clone_ssl_config(&data->set.ssl, &conn->ssl_config)) {
5355 result = CURLE_OUT_OF_MEMORY;
5359 /*************************************************************
5360 * Check the current list of connections to see if we can
5361 * re-use an already existing one or if we have to create a
5363 *************************************************************/
5365 /* reuse_fresh is TRUE if we are told to use a new connection by force, but
5366 we only acknowledge this option if this is not a re-used connection
5367 already (which happens due to follow-location or during a HTTP
5368 authentication phase). */
5369 if(data->set.reuse_fresh && !data->state.this_is_a_follow)
5372 reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse);
5374 /* If we found a reusable connection, we may still want to
5375 open a new connection if we are pipelining. */
5376 if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
5377 size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
5379 infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
5380 conn_temp->connection_id, pipelen);
5382 if(conn_temp->bundle->num_connections < max_host_connections &&
5383 data->state.conn_cache->num_connections < max_total_connections) {
5384 /* We want a new connection anyway */
5387 infof(data, "We can reuse, but we want a new connection anyway\n");
5394 * We already have a connection for this, we got the former connection
5395 * in the conn_temp variable and thus we need to cleanup the one we
5396 * just allocated before we can move along and use the previously
5399 conn_temp->inuse = TRUE; /* mark this as being in use so that no other
5400 handle in a multi stack may nick it */
5401 reuse_conn(conn, conn_temp);
5402 free(conn); /* we don't need this anymore */
5406 /* set a pointer to the hostname we display */
5407 fix_hostname(data, conn, &conn->host);
5409 infof(data, "Re-using existing connection! (#%ld) with host %s\n",
5410 conn->connection_id,
5411 conn->proxy.name?conn->proxy.dispname:conn->host.dispname);
5414 /* We have decided that we want a new connection. However, we may not
5415 be able to do that if we have reached the limit of how many
5416 connections we are allowed to open. */
5417 struct connectbundle *bundle;
5419 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
5421 if(max_host_connections > 0 && bundle &&
5422 (bundle->num_connections >= max_host_connections)) {
5423 struct connectdata *conn_candidate;
5425 /* The bundle is full. Let's see if we can kill a connection. */
5426 conn_candidate = find_oldest_idle_connection_in_bundle(data, bundle);
5428 if(conn_candidate) {
5429 /* Set the connection's owner correctly, then kill it */
5430 conn_candidate->data = data;
5431 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5434 no_connections_available = TRUE;
5437 if(max_total_connections > 0 &&
5438 (data->state.conn_cache->num_connections >= max_total_connections)) {
5439 struct connectdata *conn_candidate;
5441 /* The cache is full. Let's see if we can kill a connection. */
5442 conn_candidate = find_oldest_idle_connection(data);
5444 if(conn_candidate) {
5445 /* Set the connection's owner correctly, then kill it */
5446 conn_candidate->data = data;
5447 (void)Curl_disconnect(conn_candidate, /* dead_connection */ FALSE);
5450 no_connections_available = TRUE;
5454 if(no_connections_available) {
5455 infof(data, "No connections available.\n");
5460 result = CURLE_NO_CONNECTION_AVAILABLE;
5465 * This is a brand new connection, so let's store it in the connection
5468 ConnectionStore(data, conn);
5472 /* Mark the connection as used */
5475 /* Setup and init stuff before DO starts, in preparing for the transfer. */
5479 * Setup whatever necessary for a resumed transfer
5481 result = setup_range(data);
5485 /* Continue connectdata initialization here. */
5488 * Inherit the proper values from the urldata struct AFTER we have arranged
5489 * the persistent connection stuff
5491 conn->fread_func = data->set.fread_func;
5492 conn->fread_in = data->set.in;
5493 conn->seek_func = data->set.seek_func;
5494 conn->seek_client = data->set.seek_client;
5496 /*************************************************************
5497 * Resolve the address of the server or proxy
5498 *************************************************************/
5499 result = resolve_server(data, conn, async);
5503 Curl_safefree(options);
5504 Curl_safefree(passwd);
5505 Curl_safefree(user);
5506 Curl_safefree(proxy);
5510 /* Curl_setup_conn() is called after the name resolve initiated in
5511 * create_conn() is all done.
5513 * Curl_setup_conn() also handles reused connections
5515 * conn->data MUST already have been setup fine (in create_conn)
5518 CURLcode Curl_setup_conn(struct connectdata *conn,
5519 bool *protocol_done)
5521 CURLcode result = CURLE_OK;
5522 struct SessionHandle *data = conn->data;
5524 Curl_pgrsTime(data, TIMER_NAMELOOKUP);
5526 if(conn->handler->flags & PROTOPT_NONETWORK) {
5527 /* nothing to setup when not using a network */
5528 *protocol_done = TRUE;
5531 *protocol_done = FALSE; /* default to not done */
5533 /* set proxy_connect_closed to false unconditionally already here since it
5534 is used strictly to provide extra information to a parent function in the
5535 case of proxy CONNECT failures and we must make sure we don't have it
5536 lingering set from a previous invoke */
5537 conn->bits.proxy_connect_closed = FALSE;
5540 * Set user-agent. Used for HTTP, but since we can attempt to tunnel
5541 * basically anything through a http proxy we can't limit this based on
5544 if(data->set.str[STRING_USERAGENT]) {
5545 Curl_safefree(conn->allocptr.uagent);
5546 conn->allocptr.uagent =
5547 aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
5548 if(!conn->allocptr.uagent)
5549 return CURLE_OUT_OF_MEMORY;
5552 data->req.headerbytecount = 0;
5554 #ifdef CURL_DO_LINEEND_CONV
5555 data->state.crlf_conversions = 0; /* reset CRLF conversion counter */
5556 #endif /* CURL_DO_LINEEND_CONV */
5558 /* set start time here for timeout purposes in the connect procedure, it
5559 is later set again for the progress meter purpose */
5560 conn->now = Curl_tvnow();
5562 if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) {
5563 conn->bits.tcpconnect[FIRSTSOCKET] = FALSE;
5564 result = Curl_connecthost(conn, conn->dns_entry);
5565 if(CURLE_OK != result)
5569 Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */
5570 Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */
5571 conn->bits.tcpconnect[FIRSTSOCKET] = TRUE;
5572 *protocol_done = TRUE;
5573 Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]);
5574 Curl_verboseconnect(conn);
5577 conn->now = Curl_tvnow(); /* time this *after* the connect is done, we
5578 set this here perhaps a second time */
5582 * This check is quite a hack. We're calling _fsetmode to fix the problem
5583 * with fwrite converting newline characters (you get mangled text files,
5584 * and corrupted binary files when you download to stdout and redirect it to
5588 if((data->set.out)->_handle == NULL) {
5589 _fsetmode(stdout, "b");
5596 CURLcode Curl_connect(struct SessionHandle *data,
5597 struct connectdata **in_connect,
5599 bool *protocol_done)
5603 *asyncp = FALSE; /* assume synchronous resolves by default */
5605 /* call the stuff that needs to be called */
5606 code = create_conn(data, in_connect, asyncp);
5608 if(CURLE_OK == code) {
5610 if((*in_connect)->send_pipe->size || (*in_connect)->recv_pipe->size)
5612 *protocol_done = TRUE;
5614 /* DNS resolution is done: that's either because this is a reused
5615 connection, in which case DNS was unnecessary, or because DNS
5616 really did finish already (synch resolver/fast async resolve) */
5617 code = Curl_setup_conn(*in_connect, protocol_done);
5621 if(code == CURLE_NO_CONNECTION_AVAILABLE) {
5626 if(code && *in_connect) {
5627 /* We're not allowed to return failure with memory left allocated
5628 in the connectdata struct, free those here */
5629 Curl_disconnect(*in_connect, FALSE); /* close the connection */
5630 *in_connect = NULL; /* return a NULL */
5636 CURLcode Curl_done(struct connectdata **connp,
5637 CURLcode status, /* an error if this is called after an
5638 error was detected */
5642 struct connectdata *conn;
5643 struct SessionHandle *data;
5645 DEBUGASSERT(*connp);
5651 /* Stop if Curl_done() has already been called */
5654 Curl_getoff_all_pipelines(data, conn);
5656 if((conn->send_pipe->size + conn->recv_pipe->size != 0 &&
5657 !data->set.reuse_forbid &&
5659 /* Stop if pipeline is not empty and we do not have to close
5663 conn->bits.done = TRUE; /* called just now! */
5665 /* Cleanup possible redirect junk */
5666 if(data->req.newurl) {
5667 free(data->req.newurl);
5668 data->req.newurl = NULL;
5670 if(data->req.location) {
5671 free(data->req.location);
5672 data->req.location = NULL;
5675 Curl_resolver_cancel(conn);
5677 if(conn->dns_entry) {
5678 Curl_resolv_unlock(data, conn->dns_entry); /* done with this */
5679 conn->dns_entry = NULL;
5683 case CURLE_ABORTED_BY_CALLBACK:
5684 case CURLE_READ_ERROR:
5685 case CURLE_WRITE_ERROR:
5686 /* When we're aborted due to a callback return code it basically have to
5687 be counted as premature as there is trouble ahead if we don't. We have
5688 many callbacks and protocols work differently, we could potentially do
5689 this more fine-grained in the future. */
5695 /* this calls the protocol-specific function pointer previously set */
5696 if(conn->handler->done)
5697 result = conn->handler->done(conn, status, premature);
5701 if(Curl_pgrsDone(conn) && !result)
5702 result = CURLE_ABORTED_BY_CALLBACK;
5704 /* if the transfer was completed in a paused state there can be buffered
5705 data left to write and then kill */
5706 if(data->state.tempwrite) {
5707 free(data->state.tempwrite);
5708 data->state.tempwrite = NULL;
5711 /* if data->set.reuse_forbid is TRUE, it means the libcurl client has
5712 forced us to close this no matter what we think.
5714 if conn->bits.close is TRUE, it means that the connection should be
5715 closed in spite of all our efforts to be nice, due to protocol
5716 restrictions in our or the server's end
5718 if premature is TRUE, it means this connection was said to be DONE before
5719 the entire request operation is complete and thus we can't know in what
5720 state it is for re-using, so we're forced to close it. In a perfect world
5721 we can add code that keep track of if we really must close it here or not,
5722 but currently we have no such detail knowledge.
5724 if(data->set.reuse_forbid || conn->bits.close || premature) {
5725 CURLcode res2 = Curl_disconnect(conn, premature); /* close connection */
5727 /* If we had an error already, make sure we return that one. But
5728 if we got a new error, return that. */
5733 /* the connection is no longer in use */
5734 if(ConnectionDone(data, conn)) {
5735 /* remember the most recently used connection */
5736 data->state.lastconnect = conn;
5738 infof(data, "Connection #%ld to host %s left intact\n",
5739 conn->connection_id,
5740 conn->bits.httpproxy?conn->proxy.dispname:conn->host.dispname);
5743 data->state.lastconnect = NULL;
5746 *connp = NULL; /* to make the caller of this function better detect that
5747 this was either closed or handed over to the connection
5748 cache here, and therefore cannot be used from this point on
5750 Curl_free_request_state(data);
5756 * do_init() inits the readwrite session. This is inited each time (in the DO
5757 * function before the protocol-specific DO functions are invoked) for a
5758 * transfer, sometimes multiple times on the same SessionHandle. Make sure
5759 * nothing in here depends on stuff that are setup dynamically for the
5763 static CURLcode do_init(struct connectdata *conn)
5765 struct SessionHandle *data = conn->data;
5766 struct SingleRequest *k = &data->req;
5768 conn->bits.done = FALSE; /* Curl_done() is not called yet */
5769 conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to use */
5770 data->state.expect100header = FALSE;
5772 if(data->set.opt_no_body)
5773 /* in HTTP lingo, no body means using the HEAD request... */
5774 data->set.httpreq = HTTPREQ_HEAD;
5775 else if(HTTPREQ_HEAD == data->set.httpreq)
5776 /* ... but if unset there really is no perfect method that is the
5777 "opposite" of HEAD but in reality most people probably think GET
5778 then. The important thing is that we can't let it remain HEAD if the
5779 opt_no_body is set FALSE since then we'll behave wrong when getting
5781 data->set.httpreq = HTTPREQ_GET;
5783 k->start = Curl_tvnow(); /* start time */
5784 k->now = k->start; /* current time is now */
5785 k->header = TRUE; /* assume header */
5789 k->buf = data->state.buffer;
5790 k->uploadbuf = data->state.uploadbuffer;
5791 k->hbufp = data->state.headerbuff;
5792 k->ignorebody=FALSE;
5794 Curl_speedinit(data);
5796 Curl_pgrsSetUploadCounter(data, 0);
5797 Curl_pgrsSetDownloadCounter(data, 0);
5803 * do_complete is called when the DO actions are complete.
5805 * We init chunking and trailer bits to their default values here immediately
5806 * before receiving any header data for the current request in the pipeline.
5808 static void do_complete(struct connectdata *conn)
5810 conn->data->req.chunk=FALSE;
5811 conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
5812 conn->sockfd:conn->writesockfd)+1;
5813 Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
5816 CURLcode Curl_do(struct connectdata **connp, bool *done)
5818 CURLcode result=CURLE_OK;
5819 struct connectdata *conn = *connp;
5820 struct SessionHandle *data = conn->data;
5822 if(conn->handler->do_it) {
5823 /* generic protocol-specific function pointer set in curl_connect() */
5824 result = conn->handler->do_it(conn, done);
5826 /* This was formerly done in transfer.c, but we better do it here */
5827 if((CURLE_SEND_ERROR == result) && conn->bits.reuse) {
5829 * If the connection is using an easy handle, call reconnect
5830 * to re-establish the connection. Otherwise, let the multi logic
5831 * figure out how to re-establish the connection.
5834 result = Curl_reconnect_request(connp);
5836 if(result == CURLE_OK) {
5837 /* ... finally back to actually retry the DO phase */
5838 conn = *connp; /* re-assign conn since Curl_reconnect_request
5839 creates a new connection */
5840 result = conn->handler->do_it(conn, done);
5847 if((result == CURLE_OK) && *done)
5848 /* do_complete must be called after the protocol-specific DO function */
5855 * Curl_do_more() is called during the DO_MORE multi state. It is basically a
5856 * second stage DO state which (wrongly) was introduced to support FTP's
5857 * second connection.
5859 * TODO: A future libcurl should be able to work away this state.
5861 * 'complete' can return 0 for incomplete, 1 for done and -1 for go back to
5862 * DOING state there's more work to do!
5865 CURLcode Curl_do_more(struct connectdata *conn, int *complete)
5867 CURLcode result=CURLE_OK;
5871 if(conn->handler->do_more)
5872 result = conn->handler->do_more(conn, complete);
5874 if(!result && (*complete == 1))
5875 /* do_complete must be called after the protocol-specific DO function */