1 | /*************************************************************************** |
2 | * _ _ ____ _ |
3 | * Project ___| | | | _ \| | |
4 | * / __| | | | |_) | | |
5 | * | (__| |_| | _ <| |___ |
6 | * \___|\___/|_| \_\_____| |
7 | * |
8 | * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al. |
9 | * |
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 https://curl.haxx.se/docs/copyright.html. |
13 | * |
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. |
17 | * |
18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
19 | * KIND, either express or implied. |
20 | * |
21 | ***************************************************************************/ |
22 | |
23 | #include "curl_setup.h" |
24 | |
25 | #ifdef HAVE_NETINET_IN_H |
26 | #include <netinet/in.h> |
27 | #endif |
28 | #ifdef HAVE_NETDB_H |
29 | #include <netdb.h> |
30 | #endif |
31 | #ifdef HAVE_ARPA_INET_H |
32 | #include <arpa/inet.h> |
33 | #endif |
34 | #ifdef HAVE_NET_IF_H |
35 | #include <net/if.h> |
36 | #endif |
37 | #ifdef HAVE_IPHLPAPI_H |
38 | #include <Iphlpapi.h> |
39 | #endif |
40 | #ifdef HAVE_SYS_IOCTL_H |
41 | #include <sys/ioctl.h> |
42 | #endif |
43 | #ifdef HAVE_SYS_PARAM_H |
44 | #include <sys/param.h> |
45 | #endif |
46 | |
47 | #ifdef __VMS |
48 | #include <in.h> |
49 | #include <inet.h> |
50 | #endif |
51 | |
52 | #ifdef HAVE_SYS_UN_H |
53 | #include <sys/un.h> |
54 | #endif |
55 | |
56 | #ifndef HAVE_SOCKET |
57 | #error "We can't compile without socket() support!" |
58 | #endif |
59 | |
60 | #include <limits.h> |
61 | |
62 | #ifdef USE_LIBIDN2 |
63 | #include <idn2.h> |
64 | |
65 | #elif defined(USE_WIN32_IDN) |
66 | /* prototype for curl_win32_idn_to_ascii() */ |
67 | bool curl_win32_idn_to_ascii(const char *in, char **out); |
68 | #endif /* USE_LIBIDN2 */ |
69 | |
70 | #include "urldata.h" |
71 | #include "netrc.h" |
72 | |
73 | #include "formdata.h" |
74 | #include "mime.h" |
75 | #include "vtls/vtls.h" |
76 | #include "hostip.h" |
77 | #include "transfer.h" |
78 | #include "sendf.h" |
79 | #include "progress.h" |
80 | #include "cookie.h" |
81 | #include "strcase.h" |
82 | #include "strerror.h" |
83 | #include "escape.h" |
84 | #include "strtok.h" |
85 | #include "share.h" |
86 | #include "content_encoding.h" |
87 | #include "http_digest.h" |
88 | #include "http_negotiate.h" |
89 | #include "select.h" |
90 | #include "multiif.h" |
91 | #include "easyif.h" |
92 | #include "speedcheck.h" |
93 | #include "warnless.h" |
94 | #include "non-ascii.h" |
95 | #include "inet_pton.h" |
96 | #include "getinfo.h" |
97 | #include "urlapi-int.h" |
98 | #include "system_win32.h" |
99 | |
100 | /* And now for the protocols */ |
101 | #include "ftp.h" |
102 | #include "dict.h" |
103 | #include "telnet.h" |
104 | #include "tftp.h" |
105 | #include "http.h" |
106 | #include "http2.h" |
107 | #include "file.h" |
108 | #include "curl_ldap.h" |
109 | #include "vssh/ssh.h" |
110 | #include "imap.h" |
111 | #include "url.h" |
112 | #include "connect.h" |
113 | #include "inet_ntop.h" |
114 | #include "http_ntlm.h" |
115 | #include "curl_rtmp.h" |
116 | #include "gopher.h" |
117 | #include "http_proxy.h" |
118 | #include "conncache.h" |
119 | #include "multihandle.h" |
120 | #include "dotdot.h" |
121 | #include "strdup.h" |
122 | #include "setopt.h" |
123 | #include "altsvc.h" |
124 | |
125 | /* The last 3 #include files should be in this order */ |
126 | #include "curl_printf.h" |
127 | #include "curl_memory.h" |
128 | #include "memdebug.h" |
129 | |
130 | static void conn_free(struct connectdata *conn); |
131 | static void free_idnconverted_hostname(struct hostname *host); |
132 | static unsigned int get_protocol_family(unsigned int protocol); |
133 | |
134 | /* Some parts of the code (e.g. chunked encoding) assume this buffer has at |
135 | * more than just a few bytes to play with. Don't let it become too small or |
136 | * bad things will happen. |
137 | */ |
138 | #if READBUFFER_SIZE < READBUFFER_MIN |
139 | # error READBUFFER_SIZE is too small |
140 | #endif |
141 | |
142 | |
143 | /* |
144 | * Protocol table. |
145 | */ |
146 | |
147 | static const struct Curl_handler * const protocols[] = { |
148 | |
149 | #ifndef CURL_DISABLE_HTTP |
150 | &Curl_handler_http, |
151 | #endif |
152 | |
153 | #if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP) |
154 | &Curl_handler_https, |
155 | #endif |
156 | |
157 | #ifndef CURL_DISABLE_FTP |
158 | &Curl_handler_ftp, |
159 | #endif |
160 | |
161 | #if defined(USE_SSL) && !defined(CURL_DISABLE_FTP) |
162 | &Curl_handler_ftps, |
163 | #endif |
164 | |
165 | #ifndef CURL_DISABLE_TELNET |
166 | &Curl_handler_telnet, |
167 | #endif |
168 | |
169 | #ifndef CURL_DISABLE_DICT |
170 | &Curl_handler_dict, |
171 | #endif |
172 | |
173 | #ifndef CURL_DISABLE_LDAP |
174 | &Curl_handler_ldap, |
175 | #if !defined(CURL_DISABLE_LDAPS) && \ |
176 | ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \ |
177 | (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL))) |
178 | &Curl_handler_ldaps, |
179 | #endif |
180 | #endif |
181 | |
182 | #ifndef CURL_DISABLE_FILE |
183 | &Curl_handler_file, |
184 | #endif |
185 | |
186 | #ifndef CURL_DISABLE_TFTP |
187 | &Curl_handler_tftp, |
188 | #endif |
189 | |
190 | #if defined(USE_SSH) |
191 | &Curl_handler_scp, |
192 | #endif |
193 | |
194 | #if defined(USE_SSH) |
195 | &Curl_handler_sftp, |
196 | #endif |
197 | |
198 | #ifndef CURL_DISABLE_IMAP |
199 | &Curl_handler_imap, |
200 | #ifdef USE_SSL |
201 | &Curl_handler_imaps, |
202 | #endif |
203 | #endif |
204 | |
205 | #ifndef CURL_DISABLE_POP3 |
206 | &Curl_handler_pop3, |
207 | #ifdef USE_SSL |
208 | &Curl_handler_pop3s, |
209 | #endif |
210 | #endif |
211 | |
212 | #if !defined(CURL_DISABLE_SMB) && defined(USE_NTLM) && \ |
213 | (CURL_SIZEOF_CURL_OFF_T > 4) && \ |
214 | (!defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO)) |
215 | &Curl_handler_smb, |
216 | #ifdef USE_SSL |
217 | &Curl_handler_smbs, |
218 | #endif |
219 | #endif |
220 | |
221 | #ifndef CURL_DISABLE_SMTP |
222 | &Curl_handler_smtp, |
223 | #ifdef USE_SSL |
224 | &Curl_handler_smtps, |
225 | #endif |
226 | #endif |
227 | |
228 | #ifndef CURL_DISABLE_RTSP |
229 | &Curl_handler_rtsp, |
230 | #endif |
231 | |
232 | #ifndef CURL_DISABLE_GOPHER |
233 | &Curl_handler_gopher, |
234 | #endif |
235 | |
236 | #ifdef USE_LIBRTMP |
237 | &Curl_handler_rtmp, |
238 | &Curl_handler_rtmpt, |
239 | &Curl_handler_rtmpe, |
240 | &Curl_handler_rtmpte, |
241 | &Curl_handler_rtmps, |
242 | &Curl_handler_rtmpts, |
243 | #endif |
244 | |
245 | (struct Curl_handler *) NULL |
246 | }; |
247 | |
248 | /* |
249 | * Dummy handler for undefined protocol schemes. |
250 | */ |
251 | |
252 | static const struct Curl_handler Curl_handler_dummy = { |
253 | "<no protocol>" , /* scheme */ |
254 | ZERO_NULL, /* setup_connection */ |
255 | ZERO_NULL, /* do_it */ |
256 | ZERO_NULL, /* done */ |
257 | ZERO_NULL, /* do_more */ |
258 | ZERO_NULL, /* connect_it */ |
259 | ZERO_NULL, /* connecting */ |
260 | ZERO_NULL, /* doing */ |
261 | ZERO_NULL, /* proto_getsock */ |
262 | ZERO_NULL, /* doing_getsock */ |
263 | ZERO_NULL, /* domore_getsock */ |
264 | ZERO_NULL, /* perform_getsock */ |
265 | ZERO_NULL, /* disconnect */ |
266 | ZERO_NULL, /* readwrite */ |
267 | ZERO_NULL, /* connection_check */ |
268 | 0, /* defport */ |
269 | 0, /* protocol */ |
270 | PROTOPT_NONE /* flags */ |
271 | }; |
272 | |
273 | void Curl_freeset(struct Curl_easy *data) |
274 | { |
275 | /* Free all dynamic strings stored in the data->set substructure. */ |
276 | enum dupstring i; |
277 | for(i = (enum dupstring)0; i < STRING_LAST; i++) { |
278 | Curl_safefree(data->set.str[i]); |
279 | } |
280 | |
281 | if(data->change.referer_alloc) { |
282 | Curl_safefree(data->change.referer); |
283 | data->change.referer_alloc = FALSE; |
284 | } |
285 | data->change.referer = NULL; |
286 | if(data->change.url_alloc) { |
287 | Curl_safefree(data->change.url); |
288 | data->change.url_alloc = FALSE; |
289 | } |
290 | data->change.url = NULL; |
291 | |
292 | Curl_mime_cleanpart(&data->set.mimepost); |
293 | } |
294 | |
295 | /* free the URL pieces */ |
296 | static void up_free(struct Curl_easy *data) |
297 | { |
298 | struct urlpieces *up = &data->state.up; |
299 | Curl_safefree(up->scheme); |
300 | Curl_safefree(up->hostname); |
301 | Curl_safefree(up->port); |
302 | Curl_safefree(up->user); |
303 | Curl_safefree(up->password); |
304 | Curl_safefree(up->options); |
305 | Curl_safefree(up->path); |
306 | Curl_safefree(up->query); |
307 | curl_url_cleanup(data->state.uh); |
308 | data->state.uh = NULL; |
309 | } |
310 | |
311 | /* |
312 | * This is the internal function curl_easy_cleanup() calls. This should |
313 | * cleanup and free all resources associated with this sessionhandle. |
314 | * |
315 | * NOTE: if we ever add something that attempts to write to a socket or |
316 | * similar here, we must ignore SIGPIPE first. It is currently only done |
317 | * when curl_easy_perform() is invoked. |
318 | */ |
319 | |
320 | CURLcode Curl_close(struct Curl_easy **datap) |
321 | { |
322 | struct Curl_multi *m; |
323 | struct Curl_easy *data; |
324 | |
325 | if(!datap || !*datap) |
326 | return CURLE_OK; |
327 | |
328 | data = *datap; |
329 | *datap = NULL; |
330 | |
331 | Curl_expire_clear(data); /* shut off timers */ |
332 | |
333 | m = data->multi; |
334 | if(m) |
335 | /* This handle is still part of a multi handle, take care of this first |
336 | and detach this handle from there. */ |
337 | curl_multi_remove_handle(data->multi, data); |
338 | |
339 | if(data->multi_easy) { |
340 | /* when curl_easy_perform() is used, it creates its own multi handle to |
341 | use and this is the one */ |
342 | curl_multi_cleanup(data->multi_easy); |
343 | data->multi_easy = NULL; |
344 | } |
345 | |
346 | /* Destroy the timeout list that is held in the easy handle. It is |
347 | /normally/ done by curl_multi_remove_handle() but this is "just in |
348 | case" */ |
349 | Curl_llist_destroy(&data->state.timeoutlist, NULL); |
350 | |
351 | data->magic = 0; /* force a clear AFTER the possibly enforced removal from |
352 | the multi handle, since that function uses the magic |
353 | field! */ |
354 | |
355 | if(data->state.rangestringalloc) |
356 | free(data->state.range); |
357 | |
358 | /* freed here just in case DONE wasn't called */ |
359 | Curl_free_request_state(data); |
360 | |
361 | /* Close down all open SSL info and sessions */ |
362 | Curl_ssl_close_all(data); |
363 | Curl_safefree(data->state.first_host); |
364 | Curl_safefree(data->state.scratch); |
365 | Curl_ssl_free_certinfo(data); |
366 | |
367 | /* Cleanup possible redirect junk */ |
368 | free(data->req.newurl); |
369 | data->req.newurl = NULL; |
370 | |
371 | if(data->change.referer_alloc) { |
372 | Curl_safefree(data->change.referer); |
373 | data->change.referer_alloc = FALSE; |
374 | } |
375 | data->change.referer = NULL; |
376 | |
377 | up_free(data); |
378 | Curl_safefree(data->state.buffer); |
379 | Curl_safefree(data->state.headerbuff); |
380 | Curl_safefree(data->state.ulbuf); |
381 | Curl_flush_cookies(data, TRUE); |
382 | #ifdef USE_ALTSVC |
383 | Curl_altsvc_save(data->asi, data->set.str[STRING_ALTSVC]); |
384 | Curl_altsvc_cleanup(data->asi); |
385 | data->asi = NULL; |
386 | #endif |
387 | #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_CRYPTO_AUTH) |
388 | Curl_http_auth_cleanup_digest(data); |
389 | #endif |
390 | Curl_safefree(data->info.contenttype); |
391 | Curl_safefree(data->info.wouldredirect); |
392 | |
393 | /* this destroys the channel and we cannot use it anymore after this */ |
394 | Curl_resolver_cleanup(data->state.resolver); |
395 | |
396 | Curl_http2_cleanup_dependencies(data); |
397 | Curl_convert_close(data); |
398 | |
399 | /* No longer a dirty share, if it exists */ |
400 | if(data->share) { |
401 | Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE); |
402 | data->share->dirty--; |
403 | Curl_share_unlock(data, CURL_LOCK_DATA_SHARE); |
404 | } |
405 | |
406 | #ifndef CURL_DISABLE_DOH |
407 | free(data->req.doh.probe[0].serverdoh.memory); |
408 | free(data->req.doh.probe[1].serverdoh.memory); |
409 | curl_slist_free_all(data->req.doh.headers); |
410 | #endif |
411 | |
412 | /* destruct wildcard structures if it is needed */ |
413 | Curl_wildcard_dtor(&data->wildcard); |
414 | Curl_freeset(data); |
415 | free(data); |
416 | return CURLE_OK; |
417 | } |
418 | |
419 | /* |
420 | * Initialize the UserDefined fields within a Curl_easy. |
421 | * This may be safely called on a new or existing Curl_easy. |
422 | */ |
423 | CURLcode Curl_init_userdefined(struct Curl_easy *data) |
424 | { |
425 | struct UserDefined *set = &data->set; |
426 | CURLcode result = CURLE_OK; |
427 | |
428 | set->out = stdout; /* default output to stdout */ |
429 | set->in_set = stdin; /* default input from stdin */ |
430 | set->err = stderr; /* default stderr to stderr */ |
431 | |
432 | /* use fwrite as default function to store output */ |
433 | set->fwrite_func = (curl_write_callback)fwrite; |
434 | |
435 | /* use fread as default function to read input */ |
436 | set->fread_func_set = (curl_read_callback)fread; |
437 | set->is_fread_set = 0; |
438 | set->is_fwrite_set = 0; |
439 | |
440 | set->seek_func = ZERO_NULL; |
441 | set->seek_client = ZERO_NULL; |
442 | |
443 | /* conversion callbacks for non-ASCII hosts */ |
444 | set->convfromnetwork = ZERO_NULL; |
445 | set->convtonetwork = ZERO_NULL; |
446 | set->convfromutf8 = ZERO_NULL; |
447 | |
448 | set->filesize = -1; /* we don't know the size */ |
449 | set->postfieldsize = -1; /* unknown size */ |
450 | set->maxredirs = -1; /* allow any amount by default */ |
451 | |
452 | set->httpreq = HTTPREQ_GET; /* Default HTTP request */ |
453 | set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */ |
454 | #ifndef CURL_DISABLE_FTP |
455 | set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */ |
456 | set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */ |
457 | set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */ |
458 | set->ftp_filemethod = FTPFILE_MULTICWD; |
459 | #endif |
460 | set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */ |
461 | |
462 | /* Set the default size of the SSL session ID cache */ |
463 | set->general_ssl.max_ssl_sessions = 5; |
464 | |
465 | set->proxyport = 0; |
466 | set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */ |
467 | set->httpauth = CURLAUTH_BASIC; /* defaults to basic */ |
468 | set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */ |
469 | |
470 | /* SOCKS5 proxy auth defaults to username/password + GSS-API */ |
471 | set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI; |
472 | |
473 | /* make libcurl quiet by default: */ |
474 | set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */ |
475 | |
476 | Curl_mime_initpart(&set->mimepost, data); |
477 | |
478 | /* |
479 | * libcurl 7.10 introduced SSL verification *by default*! This needs to be |
480 | * switched off unless wanted. |
481 | */ |
482 | set->ssl.primary.verifypeer = TRUE; |
483 | set->ssl.primary.verifyhost = TRUE; |
484 | #ifdef USE_TLS_SRP |
485 | set->ssl.authtype = CURL_TLSAUTH_NONE; |
486 | #endif |
487 | set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth |
488 | type */ |
489 | set->ssl.primary.sessionid = TRUE; /* session ID caching enabled by |
490 | default */ |
491 | set->proxy_ssl = set->ssl; |
492 | |
493 | set->new_file_perms = 0644; /* Default permissions */ |
494 | set->new_directory_perms = 0755; /* Default permissions */ |
495 | |
496 | /* for the *protocols fields we don't use the CURLPROTO_ALL convenience |
497 | define since we internally only use the lower 16 bits for the passed |
498 | in bitmask to not conflict with the private bits */ |
499 | set->allowed_protocols = CURLPROTO_ALL; |
500 | set->redir_protocols = CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_FTP | |
501 | CURLPROTO_FTPS; |
502 | |
503 | #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI) |
504 | /* |
505 | * disallow unprotected protection negotiation NEC reference implementation |
506 | * seem not to follow rfc1961 section 4.3/4.4 |
507 | */ |
508 | set->socks5_gssapi_nec = FALSE; |
509 | #endif |
510 | |
511 | /* Set the default CA cert bundle/path detected/specified at build time. |
512 | * |
513 | * If Schannel is the selected SSL backend then these locations are |
514 | * ignored. We allow setting CA location for schannel only when explicitly |
515 | * specified by the user via CURLOPT_CAINFO / --cacert. |
516 | */ |
517 | if(Curl_ssl_backend() != CURLSSLBACKEND_SCHANNEL) { |
518 | #if defined(CURL_CA_BUNDLE) |
519 | result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_ORIG], CURL_CA_BUNDLE); |
520 | if(result) |
521 | return result; |
522 | |
523 | result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_PROXY], |
524 | CURL_CA_BUNDLE); |
525 | if(result) |
526 | return result; |
527 | #endif |
528 | #if defined(CURL_CA_PATH) |
529 | result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_ORIG], CURL_CA_PATH); |
530 | if(result) |
531 | return result; |
532 | |
533 | result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_PROXY], CURL_CA_PATH); |
534 | if(result) |
535 | return result; |
536 | #endif |
537 | } |
538 | |
539 | set->wildcard_enabled = FALSE; |
540 | set->chunk_bgn = ZERO_NULL; |
541 | set->chunk_end = ZERO_NULL; |
542 | set->tcp_keepalive = FALSE; |
543 | set->tcp_keepintvl = 60; |
544 | set->tcp_keepidle = 60; |
545 | set->tcp_fastopen = FALSE; |
546 | set->tcp_nodelay = TRUE; |
547 | set->ssl_enable_npn = TRUE; |
548 | set->ssl_enable_alpn = TRUE; |
549 | set->expect_100_timeout = 1000L; /* Wait for a second by default. */ |
550 | set->sep_headers = TRUE; /* separated header lists by default */ |
551 | set->buffer_size = READBUFFER_SIZE; |
552 | set->upload_buffer_size = UPLOADBUFFER_DEFAULT; |
553 | set->happy_eyeballs_timeout = CURL_HET_DEFAULT; |
554 | set->fnmatch = ZERO_NULL; |
555 | set->upkeep_interval_ms = CURL_UPKEEP_INTERVAL_DEFAULT; |
556 | set->maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */ |
557 | set->maxage_conn = 118; |
558 | set->http09_allowed = FALSE; |
559 | set->httpversion = |
560 | #ifdef USE_NGHTTP2 |
561 | CURL_HTTP_VERSION_2TLS |
562 | #else |
563 | CURL_HTTP_VERSION_1_1 |
564 | #endif |
565 | ; |
566 | Curl_http2_init_userset(set); |
567 | return result; |
568 | } |
569 | |
570 | /** |
571 | * Curl_open() |
572 | * |
573 | * @param curl is a pointer to a sessionhandle pointer that gets set by this |
574 | * function. |
575 | * @return CURLcode |
576 | */ |
577 | |
578 | CURLcode Curl_open(struct Curl_easy **curl) |
579 | { |
580 | CURLcode result; |
581 | struct Curl_easy *data; |
582 | |
583 | /* Very simple start-up: alloc the struct, init it with zeroes and return */ |
584 | data = calloc(1, sizeof(struct Curl_easy)); |
585 | if(!data) { |
586 | /* this is a very serious error */ |
587 | DEBUGF(fprintf(stderr, "Error: calloc of Curl_easy failed\n" )); |
588 | return CURLE_OUT_OF_MEMORY; |
589 | } |
590 | |
591 | data->magic = CURLEASY_MAGIC_NUMBER; |
592 | |
593 | result = Curl_resolver_init(data, &data->state.resolver); |
594 | if(result) { |
595 | DEBUGF(fprintf(stderr, "Error: resolver_init failed\n" )); |
596 | free(data); |
597 | return result; |
598 | } |
599 | |
600 | /* We do some initial setup here, all those fields that can't be just 0 */ |
601 | |
602 | data->state.buffer = malloc(READBUFFER_SIZE + 1); |
603 | if(!data->state.buffer) { |
604 | DEBUGF(fprintf(stderr, "Error: malloc of buffer failed\n" )); |
605 | result = CURLE_OUT_OF_MEMORY; |
606 | } |
607 | else { |
608 | data->state.headerbuff = malloc(HEADERSIZE); |
609 | if(!data->state.headerbuff) { |
610 | DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n" )); |
611 | result = CURLE_OUT_OF_MEMORY; |
612 | } |
613 | else { |
614 | result = Curl_init_userdefined(data); |
615 | |
616 | data->state.headersize = HEADERSIZE; |
617 | Curl_convert_init(data); |
618 | Curl_initinfo(data); |
619 | |
620 | /* most recent connection is not yet defined */ |
621 | data->state.lastconnect = NULL; |
622 | |
623 | data->progress.flags |= PGRS_HIDE; |
624 | data->state.current_speed = -1; /* init to negative == impossible */ |
625 | } |
626 | } |
627 | |
628 | if(result) { |
629 | Curl_resolver_cleanup(data->state.resolver); |
630 | free(data->state.buffer); |
631 | free(data->state.headerbuff); |
632 | Curl_freeset(data); |
633 | free(data); |
634 | data = NULL; |
635 | } |
636 | else |
637 | *curl = data; |
638 | |
639 | return result; |
640 | } |
641 | |
642 | #ifdef USE_RECV_BEFORE_SEND_WORKAROUND |
643 | static void conn_reset_postponed_data(struct connectdata *conn, int num) |
644 | { |
645 | struct postponed_data * const psnd = &(conn->postponed[num]); |
646 | if(psnd->buffer) { |
647 | DEBUGASSERT(psnd->allocated_size > 0); |
648 | DEBUGASSERT(psnd->recv_size <= psnd->allocated_size); |
649 | DEBUGASSERT(psnd->recv_size ? |
650 | (psnd->recv_processed < psnd->recv_size) : |
651 | (psnd->recv_processed == 0)); |
652 | DEBUGASSERT(psnd->bindsock != CURL_SOCKET_BAD); |
653 | free(psnd->buffer); |
654 | psnd->buffer = NULL; |
655 | psnd->allocated_size = 0; |
656 | psnd->recv_size = 0; |
657 | psnd->recv_processed = 0; |
658 | #ifdef DEBUGBUILD |
659 | psnd->bindsock = CURL_SOCKET_BAD; /* used only for DEBUGASSERT */ |
660 | #endif /* DEBUGBUILD */ |
661 | } |
662 | else { |
663 | DEBUGASSERT(psnd->allocated_size == 0); |
664 | DEBUGASSERT(psnd->recv_size == 0); |
665 | DEBUGASSERT(psnd->recv_processed == 0); |
666 | DEBUGASSERT(psnd->bindsock == CURL_SOCKET_BAD); |
667 | } |
668 | } |
669 | |
670 | static void conn_reset_all_postponed_data(struct connectdata *conn) |
671 | { |
672 | conn_reset_postponed_data(conn, 0); |
673 | conn_reset_postponed_data(conn, 1); |
674 | } |
675 | #else /* ! USE_RECV_BEFORE_SEND_WORKAROUND */ |
676 | /* Use "do-nothing" macro instead of function when workaround not used */ |
677 | #define conn_reset_all_postponed_data(c) do {} while(0) |
678 | #endif /* ! USE_RECV_BEFORE_SEND_WORKAROUND */ |
679 | |
680 | |
681 | static void conn_shutdown(struct connectdata *conn) |
682 | { |
683 | if(!conn) |
684 | return; |
685 | |
686 | infof(conn->data, "Closing connection %ld\n" , conn->connection_id); |
687 | DEBUGASSERT(conn->data); |
688 | |
689 | /* possible left-overs from the async name resolvers */ |
690 | Curl_resolver_cancel(conn); |
691 | |
692 | /* close the SSL stuff before we close any sockets since they will/may |
693 | write to the sockets */ |
694 | Curl_ssl_close(conn, FIRSTSOCKET); |
695 | Curl_ssl_close(conn, SECONDARYSOCKET); |
696 | |
697 | /* close possibly still open sockets */ |
698 | if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET]) |
699 | Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]); |
700 | if(CURL_SOCKET_BAD != conn->sock[FIRSTSOCKET]) |
701 | Curl_closesocket(conn, conn->sock[FIRSTSOCKET]); |
702 | if(CURL_SOCKET_BAD != conn->tempsock[0]) |
703 | Curl_closesocket(conn, conn->tempsock[0]); |
704 | if(CURL_SOCKET_BAD != conn->tempsock[1]) |
705 | Curl_closesocket(conn, conn->tempsock[1]); |
706 | |
707 | /* unlink ourselves. this should be called last since other shutdown |
708 | procedures need a valid conn->data and this may clear it. */ |
709 | Curl_conncache_remove_conn(conn->data, conn, TRUE); |
710 | } |
711 | |
712 | static void conn_free(struct connectdata *conn) |
713 | { |
714 | if(!conn) |
715 | return; |
716 | |
717 | free_idnconverted_hostname(&conn->host); |
718 | free_idnconverted_hostname(&conn->conn_to_host); |
719 | free_idnconverted_hostname(&conn->http_proxy.host); |
720 | free_idnconverted_hostname(&conn->socks_proxy.host); |
721 | |
722 | Curl_safefree(conn->user); |
723 | Curl_safefree(conn->passwd); |
724 | Curl_safefree(conn->oauth_bearer); |
725 | Curl_safefree(conn->sasl_authzid); |
726 | Curl_safefree(conn->options); |
727 | Curl_safefree(conn->http_proxy.user); |
728 | Curl_safefree(conn->socks_proxy.user); |
729 | Curl_safefree(conn->http_proxy.passwd); |
730 | Curl_safefree(conn->socks_proxy.passwd); |
731 | Curl_safefree(conn->allocptr.proxyuserpwd); |
732 | Curl_safefree(conn->allocptr.uagent); |
733 | Curl_safefree(conn->allocptr.userpwd); |
734 | Curl_safefree(conn->allocptr.accept_encoding); |
735 | Curl_safefree(conn->allocptr.te); |
736 | Curl_safefree(conn->allocptr.rangeline); |
737 | Curl_safefree(conn->allocptr.ref); |
738 | Curl_safefree(conn->allocptr.host); |
739 | Curl_safefree(conn->allocptr.cookiehost); |
740 | Curl_safefree(conn->allocptr.rtsp_transport); |
741 | Curl_safefree(conn->trailer); |
742 | Curl_safefree(conn->host.rawalloc); /* host name buffer */ |
743 | Curl_safefree(conn->conn_to_host.rawalloc); /* host name buffer */ |
744 | Curl_safefree(conn->hostname_resolve); |
745 | Curl_safefree(conn->secondaryhostname); |
746 | Curl_safefree(conn->http_proxy.host.rawalloc); /* http proxy name buffer */ |
747 | Curl_safefree(conn->socks_proxy.host.rawalloc); /* socks proxy name buffer */ |
748 | Curl_safefree(conn->connect_state); |
749 | |
750 | conn_reset_all_postponed_data(conn); |
751 | Curl_llist_destroy(&conn->easyq, NULL); |
752 | Curl_safefree(conn->localdev); |
753 | Curl_free_primary_ssl_config(&conn->ssl_config); |
754 | Curl_free_primary_ssl_config(&conn->proxy_ssl_config); |
755 | |
756 | #ifdef USE_UNIX_SOCKETS |
757 | Curl_safefree(conn->unix_domain_socket); |
758 | #endif |
759 | |
760 | #ifdef USE_SSL |
761 | Curl_safefree(conn->ssl_extra); |
762 | #endif |
763 | free(conn); /* free all the connection oriented data */ |
764 | } |
765 | |
766 | /* |
767 | * Disconnects the given connection. Note the connection may not be the |
768 | * primary connection, like when freeing room in the connection cache or |
769 | * killing of a dead old connection. |
770 | * |
771 | * A connection needs an easy handle when closing down. We support this passed |
772 | * in separately since the connection to get closed here is often already |
773 | * disassociated from an easy handle. |
774 | * |
775 | * This function MUST NOT reset state in the Curl_easy struct if that |
776 | * isn't strictly bound to the life-time of *this* particular connection. |
777 | * |
778 | */ |
779 | |
780 | CURLcode Curl_disconnect(struct Curl_easy *data, |
781 | struct connectdata *conn, bool dead_connection) |
782 | { |
783 | if(!conn) |
784 | return CURLE_OK; /* this is closed and fine already */ |
785 | |
786 | if(!data) { |
787 | DEBUGF(infof(data, "DISCONNECT without easy handle, ignoring\n" )); |
788 | return CURLE_OK; |
789 | } |
790 | |
791 | /* |
792 | * If this connection isn't marked to force-close, leave it open if there |
793 | * are other users of it |
794 | */ |
795 | if(CONN_INUSE(conn) && !dead_connection) { |
796 | DEBUGF(infof(data, "Curl_disconnect when inuse: %zu\n" , CONN_INUSE(conn))); |
797 | return CURLE_OK; |
798 | } |
799 | |
800 | if(conn->dns_entry != NULL) { |
801 | Curl_resolv_unlock(data, conn->dns_entry); |
802 | conn->dns_entry = NULL; |
803 | } |
804 | |
805 | Curl_hostcache_prune(data); /* kill old DNS cache entries */ |
806 | |
807 | #if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) |
808 | /* Cleanup NTLM connection-related data */ |
809 | Curl_http_auth_cleanup_ntlm(conn); |
810 | #endif |
811 | #if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO) |
812 | /* Cleanup NEGOTIATE connection-related data */ |
813 | Curl_http_auth_cleanup_negotiate(conn); |
814 | #endif |
815 | |
816 | /* the protocol specific disconnect handler and conn_shutdown need a transfer |
817 | for the connection! */ |
818 | conn->data = data; |
819 | |
820 | if(conn->bits.connect_only) |
821 | /* treat the connection as dead in CONNECT_ONLY situations */ |
822 | dead_connection = TRUE; |
823 | |
824 | if(conn->handler->disconnect) |
825 | /* This is set if protocol-specific cleanups should be made */ |
826 | conn->handler->disconnect(conn, dead_connection); |
827 | |
828 | conn_shutdown(conn); |
829 | conn_free(conn); |
830 | return CURLE_OK; |
831 | } |
832 | |
833 | /* |
834 | * This function should return TRUE if the socket is to be assumed to |
835 | * be dead. Most commonly this happens when the server has closed the |
836 | * connection due to inactivity. |
837 | */ |
838 | static bool SocketIsDead(curl_socket_t sock) |
839 | { |
840 | int sval; |
841 | bool ret_val = TRUE; |
842 | |
843 | sval = SOCKET_READABLE(sock, 0); |
844 | if(sval == 0) |
845 | /* timeout */ |
846 | ret_val = FALSE; |
847 | |
848 | return ret_val; |
849 | } |
850 | |
851 | /* |
852 | * IsMultiplexingPossible() |
853 | * |
854 | * Return a bitmask with the available multiplexing options for the given |
855 | * requested connection. |
856 | */ |
857 | static int IsMultiplexingPossible(const struct Curl_easy *handle, |
858 | const struct connectdata *conn) |
859 | { |
860 | int avail = 0; |
861 | |
862 | /* If a HTTP protocol and multiplexing is enabled */ |
863 | if((conn->handler->protocol & PROTO_FAMILY_HTTP) && |
864 | (!conn->bits.protoconnstart || !conn->bits.close)) { |
865 | |
866 | if(Curl_multiplex_wanted(handle->multi) && |
867 | (handle->set.httpversion >= CURL_HTTP_VERSION_2)) |
868 | /* allows HTTP/2 */ |
869 | avail |= CURLPIPE_MULTIPLEX; |
870 | } |
871 | return avail; |
872 | } |
873 | |
874 | #ifndef CURL_DISABLE_PROXY |
875 | static bool |
876 | proxy_info_matches(const struct proxy_info* data, |
877 | const struct proxy_info* needle) |
878 | { |
879 | if((data->proxytype == needle->proxytype) && |
880 | (data->port == needle->port) && |
881 | Curl_safe_strcasecompare(data->host.name, needle->host.name)) |
882 | return TRUE; |
883 | |
884 | return FALSE; |
885 | } |
886 | #else |
887 | /* disabled, won't get called */ |
888 | #define proxy_info_matches(x,y) FALSE |
889 | #endif |
890 | |
891 | /* A connection has to have been idle for a shorter time than 'maxage_conn' to |
892 | be subject for reuse. The success rate is just too low after this. */ |
893 | |
894 | static bool conn_maxage(struct Curl_easy *data, |
895 | struct connectdata *conn, |
896 | struct curltime now) |
897 | { |
898 | if(!conn->data) { |
899 | timediff_t idletime = Curl_timediff(now, conn->lastused); |
900 | idletime /= 1000; /* integer seconds is fine */ |
901 | |
902 | if(idletime > data->set.maxage_conn) { |
903 | infof(data, "Too old connection (%ld seconds), disconnect it\n" , |
904 | idletime); |
905 | return TRUE; |
906 | } |
907 | } |
908 | return FALSE; |
909 | } |
910 | |
911 | /* |
912 | * This function checks if the given connection is dead and extracts it from |
913 | * the connection cache if so. |
914 | * |
915 | * When this is called as a Curl_conncache_foreach() callback, the connection |
916 | * cache lock is held! |
917 | * |
918 | * Returns TRUE if the connection was dead and extracted. |
919 | */ |
920 | static bool (struct connectdata *conn, |
921 | struct Curl_easy *data) |
922 | { |
923 | if(!CONN_INUSE(conn) && !conn->data) { |
924 | /* The check for a dead socket makes sense only if the connection isn't in |
925 | use */ |
926 | bool dead; |
927 | struct curltime now = Curl_now(); |
928 | if(conn_maxage(data, conn, now)) { |
929 | dead = TRUE; |
930 | } |
931 | else if(conn->handler->connection_check) { |
932 | /* The protocol has a special method for checking the state of the |
933 | connection. Use it to check if the connection is dead. */ |
934 | unsigned int state; |
935 | struct Curl_easy *olddata = conn->data; |
936 | conn->data = data; /* use this transfer for now */ |
937 | state = conn->handler->connection_check(conn, CONNCHECK_ISDEAD); |
938 | conn->data = olddata; |
939 | dead = (state & CONNRESULT_DEAD); |
940 | } |
941 | else { |
942 | /* Use the general method for determining the death of a connection */ |
943 | dead = SocketIsDead(conn->sock[FIRSTSOCKET]); |
944 | } |
945 | |
946 | if(dead) { |
947 | infof(data, "Connection %ld seems to be dead!\n" , conn->connection_id); |
948 | Curl_conncache_remove_conn(data, conn, FALSE); |
949 | return TRUE; |
950 | } |
951 | } |
952 | return FALSE; |
953 | } |
954 | |
955 | struct prunedead { |
956 | struct Curl_easy *data; |
957 | struct connectdata *; |
958 | }; |
959 | |
960 | /* |
961 | * Wrapper to use extract_if_dead() function in Curl_conncache_foreach() |
962 | * |
963 | */ |
964 | static int (struct connectdata *conn, void *param) |
965 | { |
966 | struct prunedead *p = (struct prunedead *)param; |
967 | if(extract_if_dead(conn, p->data)) { |
968 | /* stop the iteration here, pass back the connection that was extracted */ |
969 | p->extracted = conn; |
970 | return 1; |
971 | } |
972 | return 0; /* continue iteration */ |
973 | } |
974 | |
975 | /* |
976 | * This function scans the connection cache for half-open/dead connections, |
977 | * closes and removes them. |
978 | * The cleanup is done at most once per second. |
979 | */ |
980 | static void prune_dead_connections(struct Curl_easy *data) |
981 | { |
982 | struct curltime now = Curl_now(); |
983 | timediff_t elapsed = |
984 | Curl_timediff(now, data->state.conn_cache->last_cleanup); |
985 | |
986 | if(elapsed >= 1000L) { |
987 | struct prunedead prune; |
988 | prune.data = data; |
989 | prune.extracted = NULL; |
990 | while(Curl_conncache_foreach(data, data->state.conn_cache, &prune, |
991 | call_extract_if_dead)) { |
992 | /* disconnect it */ |
993 | (void)Curl_disconnect(data, prune.extracted, /* dead_connection */TRUE); |
994 | } |
995 | data->state.conn_cache->last_cleanup = now; |
996 | } |
997 | } |
998 | |
999 | /* |
1000 | * Given one filled in connection struct (named needle), this function should |
1001 | * detect if there already is one that has all the significant details |
1002 | * exactly the same and thus should be used instead. |
1003 | * |
1004 | * If there is a match, this function returns TRUE - and has marked the |
1005 | * connection as 'in-use'. It must later be called with ConnectionDone() to |
1006 | * return back to 'idle' (unused) state. |
1007 | * |
1008 | * The force_reuse flag is set if the connection must be used. |
1009 | */ |
1010 | static bool |
1011 | ConnectionExists(struct Curl_easy *data, |
1012 | struct connectdata *needle, |
1013 | struct connectdata **usethis, |
1014 | bool *force_reuse, |
1015 | bool *waitpipe) |
1016 | { |
1017 | struct connectdata *check; |
1018 | struct connectdata *chosen = 0; |
1019 | bool foundPendingCandidate = FALSE; |
1020 | bool canmultiplex = IsMultiplexingPossible(data, needle); |
1021 | struct connectbundle *bundle; |
1022 | const char *hostbundle; |
1023 | |
1024 | #ifdef USE_NTLM |
1025 | bool wantNTLMhttp = ((data->state.authhost.want & |
1026 | (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) && |
1027 | (needle->handler->protocol & PROTO_FAMILY_HTTP)); |
1028 | bool wantProxyNTLMhttp = (needle->bits.proxy_user_passwd && |
1029 | ((data->state.authproxy.want & |
1030 | (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) && |
1031 | (needle->handler->protocol & PROTO_FAMILY_HTTP))); |
1032 | #endif |
1033 | |
1034 | *force_reuse = FALSE; |
1035 | *waitpipe = FALSE; |
1036 | |
1037 | /* Look up the bundle with all the connections to this particular host. |
1038 | Locks the connection cache, beware of early returns! */ |
1039 | bundle = Curl_conncache_find_bundle(needle, data->state.conn_cache, |
1040 | &hostbundle); |
1041 | if(bundle) { |
1042 | /* Max pipe length is zero (unlimited) for multiplexed connections */ |
1043 | struct curl_llist_element *curr; |
1044 | |
1045 | infof(data, "Found bundle for host %s: %p [%s]\n" , |
1046 | hostbundle, (void *)bundle, (bundle->multiuse == BUNDLE_MULTIPLEX ? |
1047 | "can multiplex" : "serially" )); |
1048 | |
1049 | /* We can't multiplex if we don't know anything about the server */ |
1050 | if(canmultiplex) { |
1051 | if(bundle->multiuse == BUNDLE_UNKNOWN) { |
1052 | if(data->set.pipewait) { |
1053 | infof(data, "Server doesn't support multiplex yet, wait\n" ); |
1054 | *waitpipe = TRUE; |
1055 | Curl_conncache_unlock(data); |
1056 | return FALSE; /* no re-use */ |
1057 | } |
1058 | |
1059 | infof(data, "Server doesn't support multiplex (yet)\n" ); |
1060 | canmultiplex = FALSE; |
1061 | } |
1062 | if((bundle->multiuse == BUNDLE_MULTIPLEX) && |
1063 | !Curl_multiplex_wanted(data->multi)) { |
1064 | infof(data, "Could multiplex, but not asked to!\n" ); |
1065 | canmultiplex = FALSE; |
1066 | } |
1067 | if(bundle->multiuse == BUNDLE_NO_MULTIUSE) { |
1068 | infof(data, "Can not multiplex, even if we wanted to!\n" ); |
1069 | canmultiplex = FALSE; |
1070 | } |
1071 | } |
1072 | |
1073 | curr = bundle->conn_list.head; |
1074 | while(curr) { |
1075 | bool match = FALSE; |
1076 | size_t multiplexed; |
1077 | |
1078 | /* |
1079 | * Note that if we use a HTTP proxy in normal mode (no tunneling), we |
1080 | * check connections to that proxy and not to the actual remote server. |
1081 | */ |
1082 | check = curr->ptr; |
1083 | curr = curr->next; |
1084 | |
1085 | if(check->bits.connect_only) |
1086 | /* connect-only connections will not be reused */ |
1087 | continue; |
1088 | |
1089 | multiplexed = CONN_INUSE(check) && |
1090 | (bundle->multiuse == BUNDLE_MULTIPLEX); |
1091 | |
1092 | if(canmultiplex) { |
1093 | if(check->bits.protoconnstart && check->bits.close) |
1094 | continue; |
1095 | } |
1096 | else { |
1097 | if(multiplexed) { |
1098 | /* can only happen within multi handles, and means that another easy |
1099 | handle is using this connection */ |
1100 | continue; |
1101 | } |
1102 | |
1103 | if(Curl_resolver_asynch()) { |
1104 | /* ip_addr_str[0] is NUL only if the resolving of the name hasn't |
1105 | completed yet and until then we don't re-use this connection */ |
1106 | if(!check->ip_addr_str[0]) { |
1107 | infof(data, |
1108 | "Connection #%ld is still name resolving, can't reuse\n" , |
1109 | check->connection_id); |
1110 | continue; |
1111 | } |
1112 | } |
1113 | |
1114 | if((check->sock[FIRSTSOCKET] == CURL_SOCKET_BAD) || |
1115 | check->bits.close) { |
1116 | if(!check->bits.close) |
1117 | foundPendingCandidate = TRUE; |
1118 | /* Don't pick a connection that hasn't connected yet or that is going |
1119 | to get closed. */ |
1120 | infof(data, "Connection #%ld isn't open enough, can't reuse\n" , |
1121 | check->connection_id); |
1122 | continue; |
1123 | } |
1124 | } |
1125 | |
1126 | #ifdef USE_UNIX_SOCKETS |
1127 | if(needle->unix_domain_socket) { |
1128 | if(!check->unix_domain_socket) |
1129 | continue; |
1130 | if(strcmp(needle->unix_domain_socket, check->unix_domain_socket)) |
1131 | continue; |
1132 | if(needle->abstract_unix_socket != check->abstract_unix_socket) |
1133 | continue; |
1134 | } |
1135 | else if(check->unix_domain_socket) |
1136 | continue; |
1137 | #endif |
1138 | |
1139 | if((needle->handler->flags&PROTOPT_SSL) != |
1140 | (check->handler->flags&PROTOPT_SSL)) |
1141 | /* don't do mixed SSL and non-SSL connections */ |
1142 | if(get_protocol_family(check->handler->protocol) != |
1143 | needle->handler->protocol || !check->tls_upgraded) |
1144 | /* except protocols that have been upgraded via TLS */ |
1145 | continue; |
1146 | |
1147 | if(needle->bits.httpproxy != check->bits.httpproxy || |
1148 | needle->bits.socksproxy != check->bits.socksproxy) |
1149 | continue; |
1150 | |
1151 | if(needle->bits.socksproxy && !proxy_info_matches(&needle->socks_proxy, |
1152 | &check->socks_proxy)) |
1153 | continue; |
1154 | |
1155 | if(needle->bits.conn_to_host != check->bits.conn_to_host) |
1156 | /* don't mix connections that use the "connect to host" feature and |
1157 | * connections that don't use this feature */ |
1158 | continue; |
1159 | |
1160 | if(needle->bits.conn_to_port != check->bits.conn_to_port) |
1161 | /* don't mix connections that use the "connect to port" feature and |
1162 | * connections that don't use this feature */ |
1163 | continue; |
1164 | |
1165 | if(needle->bits.httpproxy) { |
1166 | if(!proxy_info_matches(&needle->http_proxy, &check->http_proxy)) |
1167 | continue; |
1168 | |
1169 | if(needle->bits.tunnel_proxy != check->bits.tunnel_proxy) |
1170 | continue; |
1171 | |
1172 | if(needle->http_proxy.proxytype == CURLPROXY_HTTPS) { |
1173 | /* use https proxy */ |
1174 | if(needle->handler->flags&PROTOPT_SSL) { |
1175 | /* use double layer ssl */ |
1176 | if(!Curl_ssl_config_matches(&needle->proxy_ssl_config, |
1177 | &check->proxy_ssl_config)) |
1178 | continue; |
1179 | if(check->proxy_ssl[FIRSTSOCKET].state != ssl_connection_complete) |
1180 | continue; |
1181 | } |
1182 | else { |
1183 | if(!Curl_ssl_config_matches(&needle->ssl_config, |
1184 | &check->ssl_config)) |
1185 | continue; |
1186 | if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) |
1187 | continue; |
1188 | } |
1189 | } |
1190 | } |
1191 | |
1192 | if(!canmultiplex && check->data) |
1193 | /* this request can't be multiplexed but the checked connection is |
1194 | already in use so we skip it */ |
1195 | continue; |
1196 | |
1197 | if(CONN_INUSE(check) && check->data && |
1198 | (check->data->multi != needle->data->multi)) |
1199 | /* this could be subject for multiplex use, but only if they belong to |
1200 | * the same multi handle */ |
1201 | continue; |
1202 | |
1203 | if(needle->localdev || needle->localport) { |
1204 | /* If we are bound to a specific local end (IP+port), we must not |
1205 | re-use a random other one, although if we didn't ask for a |
1206 | particular one we can reuse one that was bound. |
1207 | |
1208 | This comparison is a bit rough and too strict. Since the input |
1209 | parameters can be specified in numerous ways and still end up the |
1210 | same it would take a lot of processing to make it really accurate. |
1211 | Instead, this matching will assume that re-uses of bound connections |
1212 | will most likely also re-use the exact same binding parameters and |
1213 | missing out a few edge cases shouldn't hurt anyone very much. |
1214 | */ |
1215 | if((check->localport != needle->localport) || |
1216 | (check->localportrange != needle->localportrange) || |
1217 | (needle->localdev && |
1218 | (!check->localdev || strcmp(check->localdev, needle->localdev)))) |
1219 | continue; |
1220 | } |
1221 | |
1222 | if(!(needle->handler->flags & PROTOPT_CREDSPERREQUEST)) { |
1223 | /* This protocol requires credentials per connection, |
1224 | so verify that we're using the same name and password as well */ |
1225 | if(strcmp(needle->user, check->user) || |
1226 | strcmp(needle->passwd, check->passwd)) { |
1227 | /* one of them was different */ |
1228 | continue; |
1229 | } |
1230 | } |
1231 | |
1232 | if(!needle->bits.httpproxy || (needle->handler->flags&PROTOPT_SSL) || |
1233 | needle->bits.tunnel_proxy) { |
1234 | /* The requested connection does not use a HTTP proxy or it uses SSL or |
1235 | it is a non-SSL protocol tunneled or it is a non-SSL protocol which |
1236 | is allowed to be upgraded via TLS */ |
1237 | |
1238 | if((strcasecompare(needle->handler->scheme, check->handler->scheme) || |
1239 | (get_protocol_family(check->handler->protocol) == |
1240 | needle->handler->protocol && check->tls_upgraded)) && |
1241 | (!needle->bits.conn_to_host || strcasecompare( |
1242 | needle->conn_to_host.name, check->conn_to_host.name)) && |
1243 | (!needle->bits.conn_to_port || |
1244 | needle->conn_to_port == check->conn_to_port) && |
1245 | strcasecompare(needle->host.name, check->host.name) && |
1246 | needle->remote_port == check->remote_port) { |
1247 | /* The schemes match or the the protocol family is the same and the |
1248 | previous connection was TLS upgraded, and the hostname and host |
1249 | port match */ |
1250 | if(needle->handler->flags & PROTOPT_SSL) { |
1251 | /* This is a SSL connection so verify that we're using the same |
1252 | SSL options as well */ |
1253 | if(!Curl_ssl_config_matches(&needle->ssl_config, |
1254 | &check->ssl_config)) { |
1255 | DEBUGF(infof(data, |
1256 | "Connection #%ld has different SSL parameters, " |
1257 | "can't reuse\n" , |
1258 | check->connection_id)); |
1259 | continue; |
1260 | } |
1261 | if(check->ssl[FIRSTSOCKET].state != ssl_connection_complete) { |
1262 | foundPendingCandidate = TRUE; |
1263 | DEBUGF(infof(data, |
1264 | "Connection #%ld has not started SSL connect, " |
1265 | "can't reuse\n" , |
1266 | check->connection_id)); |
1267 | continue; |
1268 | } |
1269 | } |
1270 | match = TRUE; |
1271 | } |
1272 | } |
1273 | else { |
1274 | /* The requested connection is using the same HTTP proxy in normal |
1275 | mode (no tunneling) */ |
1276 | match = TRUE; |
1277 | } |
1278 | |
1279 | if(match) { |
1280 | #if defined(USE_NTLM) |
1281 | /* If we are looking for an HTTP+NTLM connection, check if this is |
1282 | already authenticating with the right credentials. If not, keep |
1283 | looking so that we can reuse NTLM connections if |
1284 | possible. (Especially we must not reuse the same connection if |
1285 | partway through a handshake!) */ |
1286 | if(wantNTLMhttp) { |
1287 | if(strcmp(needle->user, check->user) || |
1288 | strcmp(needle->passwd, check->passwd)) { |
1289 | |
1290 | /* we prefer a credential match, but this is at least a connection |
1291 | that can be reused and "upgraded" to NTLM */ |
1292 | if(check->http_ntlm_state == NTLMSTATE_NONE) |
1293 | chosen = check; |
1294 | continue; |
1295 | } |
1296 | } |
1297 | else if(check->http_ntlm_state != NTLMSTATE_NONE) { |
1298 | /* Connection is using NTLM auth but we don't want NTLM */ |
1299 | continue; |
1300 | } |
1301 | |
1302 | /* Same for Proxy NTLM authentication */ |
1303 | if(wantProxyNTLMhttp) { |
1304 | /* Both check->http_proxy.user and check->http_proxy.passwd can be |
1305 | * NULL */ |
1306 | if(!check->http_proxy.user || !check->http_proxy.passwd) |
1307 | continue; |
1308 | |
1309 | if(strcmp(needle->http_proxy.user, check->http_proxy.user) || |
1310 | strcmp(needle->http_proxy.passwd, check->http_proxy.passwd)) |
1311 | continue; |
1312 | } |
1313 | else if(check->proxy_ntlm_state != NTLMSTATE_NONE) { |
1314 | /* Proxy connection is using NTLM auth but we don't want NTLM */ |
1315 | continue; |
1316 | } |
1317 | |
1318 | if(wantNTLMhttp || wantProxyNTLMhttp) { |
1319 | /* Credentials are already checked, we can use this connection */ |
1320 | chosen = check; |
1321 | |
1322 | if((wantNTLMhttp && |
1323 | (check->http_ntlm_state != NTLMSTATE_NONE)) || |
1324 | (wantProxyNTLMhttp && |
1325 | (check->proxy_ntlm_state != NTLMSTATE_NONE))) { |
1326 | /* We must use this connection, no other */ |
1327 | *force_reuse = TRUE; |
1328 | break; |
1329 | } |
1330 | |
1331 | /* Continue look up for a better connection */ |
1332 | continue; |
1333 | } |
1334 | #endif |
1335 | if(canmultiplex) { |
1336 | /* We can multiplex if we want to. Let's continue looking for |
1337 | the optimal connection to use. */ |
1338 | |
1339 | if(!multiplexed) { |
1340 | /* We have the optimal connection. Let's stop looking. */ |
1341 | chosen = check; |
1342 | break; |
1343 | } |
1344 | |
1345 | #ifdef USE_NGHTTP2 |
1346 | /* If multiplexed, make sure we don't go over concurrency limit */ |
1347 | if(check->bits.multiplex) { |
1348 | /* Multiplexed connections can only be HTTP/2 for now */ |
1349 | struct http_conn *httpc = &check->proto.httpc; |
1350 | if(multiplexed >= httpc->settings.max_concurrent_streams) { |
1351 | infof(data, "MAX_CONCURRENT_STREAMS reached, skip (%zu)\n" , |
1352 | multiplexed); |
1353 | continue; |
1354 | } |
1355 | } |
1356 | #endif |
1357 | /* When not multiplexed, we have a match here! */ |
1358 | chosen = check; |
1359 | infof(data, "Multiplexed connection found!\n" ); |
1360 | break; |
1361 | } |
1362 | else { |
1363 | /* We have found a connection. Let's stop searching. */ |
1364 | chosen = check; |
1365 | break; |
1366 | } |
1367 | } |
1368 | } |
1369 | } |
1370 | |
1371 | if(chosen) { |
1372 | /* mark it as used before releasing the lock */ |
1373 | chosen->data = data; /* own it! */ |
1374 | Curl_conncache_unlock(data); |
1375 | *usethis = chosen; |
1376 | return TRUE; /* yes, we found one to use! */ |
1377 | } |
1378 | Curl_conncache_unlock(data); |
1379 | |
1380 | if(foundPendingCandidate && data->set.pipewait) { |
1381 | infof(data, |
1382 | "Found pending candidate for reuse and CURLOPT_PIPEWAIT is set\n" ); |
1383 | *waitpipe = TRUE; |
1384 | } |
1385 | |
1386 | return FALSE; /* no matching connecting exists */ |
1387 | } |
1388 | |
1389 | /* |
1390 | * verboseconnect() displays verbose information after a connect |
1391 | */ |
1392 | #ifndef CURL_DISABLE_VERBOSE_STRINGS |
1393 | void Curl_verboseconnect(struct connectdata *conn) |
1394 | { |
1395 | if(conn->data->set.verbose) |
1396 | infof(conn->data, "Connected to %s (%s) port %ld (#%ld)\n" , |
1397 | conn->bits.socksproxy ? conn->socks_proxy.host.dispname : |
1398 | conn->bits.httpproxy ? conn->http_proxy.host.dispname : |
1399 | conn->bits.conn_to_host ? conn->conn_to_host.dispname : |
1400 | conn->host.dispname, |
1401 | conn->ip_addr_str, conn->port, conn->connection_id); |
1402 | } |
1403 | #endif |
1404 | |
1405 | /* |
1406 | * Helpers for IDNA conversions. |
1407 | */ |
1408 | static bool is_ASCII_name(const char *hostname) |
1409 | { |
1410 | const unsigned char *ch = (const unsigned char *)hostname; |
1411 | |
1412 | while(*ch) { |
1413 | if(*ch++ & 0x80) |
1414 | return FALSE; |
1415 | } |
1416 | return TRUE; |
1417 | } |
1418 | |
1419 | /* |
1420 | * Strip single trailing dot in the hostname, |
1421 | * primarily for SNI and http host header. |
1422 | */ |
1423 | static void strip_trailing_dot(struct hostname *host) |
1424 | { |
1425 | size_t len; |
1426 | if(!host || !host->name) |
1427 | return; |
1428 | len = strlen(host->name); |
1429 | if(len && (host->name[len-1] == '.')) |
1430 | host->name[len-1] = 0; |
1431 | } |
1432 | |
1433 | /* |
1434 | * Perform any necessary IDN conversion of hostname |
1435 | */ |
1436 | static CURLcode idnconvert_hostname(struct connectdata *conn, |
1437 | struct hostname *host) |
1438 | { |
1439 | struct Curl_easy *data = conn->data; |
1440 | |
1441 | #ifndef USE_LIBIDN2 |
1442 | (void)data; |
1443 | (void)conn; |
1444 | #elif defined(CURL_DISABLE_VERBOSE_STRINGS) |
1445 | (void)conn; |
1446 | #endif |
1447 | |
1448 | /* set the name we use to display the host name */ |
1449 | host->dispname = host->name; |
1450 | |
1451 | /* Check name for non-ASCII and convert hostname to ACE form if we can */ |
1452 | if(!is_ASCII_name(host->name)) { |
1453 | #ifdef USE_LIBIDN2 |
1454 | if(idn2_check_version(IDN2_VERSION)) { |
1455 | char *ace_hostname = NULL; |
1456 | #if IDN2_VERSION_NUMBER >= 0x00140000 |
1457 | /* IDN2_NFC_INPUT: Normalize input string using normalization form C. |
1458 | IDN2_NONTRANSITIONAL: Perform Unicode TR46 non-transitional |
1459 | processing. */ |
1460 | int flags = IDN2_NFC_INPUT | IDN2_NONTRANSITIONAL; |
1461 | #else |
1462 | int flags = IDN2_NFC_INPUT; |
1463 | #endif |
1464 | int rc = idn2_lookup_ul((const char *)host->name, &ace_hostname, flags); |
1465 | if(rc == IDN2_OK) { |
1466 | host->encalloc = (char *)ace_hostname; |
1467 | /* change the name pointer to point to the encoded hostname */ |
1468 | host->name = host->encalloc; |
1469 | } |
1470 | else { |
1471 | failf(data, "Failed to convert %s to ACE; %s\n" , host->name, |
1472 | idn2_strerror(rc)); |
1473 | return CURLE_URL_MALFORMAT; |
1474 | } |
1475 | } |
1476 | #elif defined(USE_WIN32_IDN) |
1477 | char *ace_hostname = NULL; |
1478 | |
1479 | if(curl_win32_idn_to_ascii(host->name, &ace_hostname)) { |
1480 | host->encalloc = ace_hostname; |
1481 | /* change the name pointer to point to the encoded hostname */ |
1482 | host->name = host->encalloc; |
1483 | } |
1484 | else { |
1485 | failf(data, "Failed to convert %s to ACE;\n" , host->name); |
1486 | return CURLE_URL_MALFORMAT; |
1487 | } |
1488 | #else |
1489 | infof(data, "IDN support not present, can't parse Unicode domains\n" ); |
1490 | #endif |
1491 | } |
1492 | return CURLE_OK; |
1493 | } |
1494 | |
1495 | /* |
1496 | * Frees data allocated by idnconvert_hostname() |
1497 | */ |
1498 | static void free_idnconverted_hostname(struct hostname *host) |
1499 | { |
1500 | #if defined(USE_LIBIDN2) |
1501 | if(host->encalloc) { |
1502 | idn2_free(host->encalloc); /* must be freed with idn2_free() since this was |
1503 | allocated by libidn */ |
1504 | host->encalloc = NULL; |
1505 | } |
1506 | #elif defined(USE_WIN32_IDN) |
1507 | free(host->encalloc); /* must be freed with free() since this was |
1508 | allocated by curl_win32_idn_to_ascii */ |
1509 | host->encalloc = NULL; |
1510 | #else |
1511 | (void)host; |
1512 | #endif |
1513 | } |
1514 | |
1515 | /* |
1516 | * Allocate and initialize a new connectdata object. |
1517 | */ |
1518 | static struct connectdata *allocate_conn(struct Curl_easy *data) |
1519 | { |
1520 | struct connectdata *conn = calloc(1, sizeof(struct connectdata)); |
1521 | if(!conn) |
1522 | return NULL; |
1523 | |
1524 | #ifdef USE_SSL |
1525 | /* The SSL backend-specific data (ssl_backend_data) objects are allocated as |
1526 | a separate array to ensure suitable alignment. |
1527 | Note that these backend pointers can be swapped by vtls (eg ssl backend |
1528 | data becomes proxy backend data). */ |
1529 | { |
1530 | size_t sslsize = Curl_ssl->sizeof_ssl_backend_data; |
1531 | char *ssl = calloc(4, sslsize); |
1532 | if(!ssl) { |
1533 | free(conn); |
1534 | return NULL; |
1535 | } |
1536 | conn->ssl_extra = ssl; |
1537 | conn->ssl[0].backend = (void *)ssl; |
1538 | conn->ssl[1].backend = (void *)(ssl + sslsize); |
1539 | conn->proxy_ssl[0].backend = (void *)(ssl + 2 * sslsize); |
1540 | conn->proxy_ssl[1].backend = (void *)(ssl + 3 * sslsize); |
1541 | } |
1542 | #endif |
1543 | |
1544 | conn->handler = &Curl_handler_dummy; /* Be sure we have a handler defined |
1545 | already from start to avoid NULL |
1546 | situations and checks */ |
1547 | |
1548 | /* and we setup a few fields in case we end up actually using this struct */ |
1549 | |
1550 | conn->sock[FIRSTSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */ |
1551 | conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; /* no file descriptor */ |
1552 | conn->tempsock[0] = CURL_SOCKET_BAD; /* no file descriptor */ |
1553 | conn->tempsock[1] = CURL_SOCKET_BAD; /* no file descriptor */ |
1554 | conn->connection_id = -1; /* no ID */ |
1555 | conn->port = -1; /* unknown at this point */ |
1556 | conn->remote_port = -1; /* unknown at this point */ |
1557 | #if defined(USE_RECV_BEFORE_SEND_WORKAROUND) && defined(DEBUGBUILD) |
1558 | conn->postponed[0].bindsock = CURL_SOCKET_BAD; /* no file descriptor */ |
1559 | conn->postponed[1].bindsock = CURL_SOCKET_BAD; /* no file descriptor */ |
1560 | #endif /* USE_RECV_BEFORE_SEND_WORKAROUND && DEBUGBUILD */ |
1561 | |
1562 | /* Default protocol-independent behavior doesn't support persistent |
1563 | connections, so we set this to force-close. Protocols that support |
1564 | this need to set this to FALSE in their "curl_do" functions. */ |
1565 | connclose(conn, "Default to force-close" ); |
1566 | |
1567 | /* Store creation time to help future close decision making */ |
1568 | conn->created = Curl_now(); |
1569 | |
1570 | /* Store current time to give a baseline to keepalive connection times. */ |
1571 | conn->keepalive = Curl_now(); |
1572 | |
1573 | /* Store off the configured connection upkeep time. */ |
1574 | conn->upkeep_interval_ms = data->set.upkeep_interval_ms; |
1575 | |
1576 | conn->data = data; /* Setup the association between this connection |
1577 | and the Curl_easy */ |
1578 | |
1579 | conn->http_proxy.proxytype = data->set.proxytype; |
1580 | conn->socks_proxy.proxytype = CURLPROXY_SOCKS4; |
1581 | |
1582 | #if !defined(CURL_DISABLE_PROXY) |
1583 | /* note that these two proxy bits are now just on what looks to be |
1584 | requested, they may be altered down the road */ |
1585 | conn->bits.proxy = (data->set.str[STRING_PROXY] && |
1586 | *data->set.str[STRING_PROXY]) ? TRUE : FALSE; |
1587 | conn->bits.httpproxy = (conn->bits.proxy && |
1588 | (conn->http_proxy.proxytype == CURLPROXY_HTTP || |
1589 | conn->http_proxy.proxytype == CURLPROXY_HTTP_1_0 || |
1590 | conn->http_proxy.proxytype == CURLPROXY_HTTPS)) ? |
1591 | TRUE : FALSE; |
1592 | conn->bits.socksproxy = (conn->bits.proxy && |
1593 | !conn->bits.httpproxy) ? TRUE : FALSE; |
1594 | |
1595 | if(data->set.str[STRING_PRE_PROXY] && *data->set.str[STRING_PRE_PROXY]) { |
1596 | conn->bits.proxy = TRUE; |
1597 | conn->bits.socksproxy = TRUE; |
1598 | } |
1599 | |
1600 | conn->bits.proxy_user_passwd = |
1601 | (data->set.str[STRING_PROXYUSERNAME]) ? TRUE : FALSE; |
1602 | conn->bits.tunnel_proxy = data->set.tunnel_thru_httpproxy; |
1603 | #endif /* CURL_DISABLE_PROXY */ |
1604 | |
1605 | conn->bits.user_passwd = (data->set.str[STRING_USERNAME]) ? TRUE : FALSE; |
1606 | #ifndef CURL_DISABLE_FTP |
1607 | conn->bits.ftp_use_epsv = data->set.ftp_use_epsv; |
1608 | conn->bits.ftp_use_eprt = data->set.ftp_use_eprt; |
1609 | #endif |
1610 | conn->ssl_config.verifystatus = data->set.ssl.primary.verifystatus; |
1611 | conn->ssl_config.verifypeer = data->set.ssl.primary.verifypeer; |
1612 | conn->ssl_config.verifyhost = data->set.ssl.primary.verifyhost; |
1613 | conn->proxy_ssl_config.verifystatus = |
1614 | data->set.proxy_ssl.primary.verifystatus; |
1615 | conn->proxy_ssl_config.verifypeer = data->set.proxy_ssl.primary.verifypeer; |
1616 | conn->proxy_ssl_config.verifyhost = data->set.proxy_ssl.primary.verifyhost; |
1617 | conn->ip_version = data->set.ipver; |
1618 | conn->bits.connect_only = data->set.connect_only; |
1619 | conn->transport = TRNSPRT_TCP; /* most of them are TCP streams */ |
1620 | |
1621 | #if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) && \ |
1622 | defined(NTLM_WB_ENABLED) |
1623 | conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD; |
1624 | #endif |
1625 | |
1626 | /* Initialize the easy handle list */ |
1627 | Curl_llist_init(&conn->easyq, NULL); |
1628 | |
1629 | #ifdef HAVE_GSSAPI |
1630 | conn->data_prot = PROT_CLEAR; |
1631 | #endif |
1632 | |
1633 | /* Store the local bind parameters that will be used for this connection */ |
1634 | if(data->set.str[STRING_DEVICE]) { |
1635 | conn->localdev = strdup(data->set.str[STRING_DEVICE]); |
1636 | if(!conn->localdev) |
1637 | goto error; |
1638 | } |
1639 | conn->localportrange = data->set.localportrange; |
1640 | conn->localport = data->set.localport; |
1641 | |
1642 | /* the close socket stuff needs to be copied to the connection struct as |
1643 | it may live on without (this specific) Curl_easy */ |
1644 | conn->fclosesocket = data->set.fclosesocket; |
1645 | conn->closesocket_client = data->set.closesocket_client; |
1646 | |
1647 | return conn; |
1648 | error: |
1649 | |
1650 | Curl_llist_destroy(&conn->easyq, NULL); |
1651 | free(conn->localdev); |
1652 | #ifdef USE_SSL |
1653 | free(conn->ssl_extra); |
1654 | #endif |
1655 | free(conn); |
1656 | return NULL; |
1657 | } |
1658 | |
1659 | /* returns the handler if the given scheme is built-in */ |
1660 | const struct Curl_handler *Curl_builtin_scheme(const char *scheme) |
1661 | { |
1662 | const struct Curl_handler * const *pp; |
1663 | const struct Curl_handler *p; |
1664 | /* Scan protocol handler table and match against 'scheme'. The handler may |
1665 | be changed later when the protocol specific setup function is called. */ |
1666 | for(pp = protocols; (p = *pp) != NULL; pp++) |
1667 | if(strcasecompare(p->scheme, scheme)) |
1668 | /* Protocol found in table. Check if allowed */ |
1669 | return p; |
1670 | return NULL; /* not found */ |
1671 | } |
1672 | |
1673 | |
1674 | static CURLcode findprotocol(struct Curl_easy *data, |
1675 | struct connectdata *conn, |
1676 | const char *protostr) |
1677 | { |
1678 | const struct Curl_handler *p = Curl_builtin_scheme(protostr); |
1679 | |
1680 | if(p && /* Protocol found in table. Check if allowed */ |
1681 | (data->set.allowed_protocols & p->protocol)) { |
1682 | |
1683 | /* it is allowed for "normal" request, now do an extra check if this is |
1684 | the result of a redirect */ |
1685 | if(data->state.this_is_a_follow && |
1686 | !(data->set.redir_protocols & p->protocol)) |
1687 | /* nope, get out */ |
1688 | ; |
1689 | else { |
1690 | /* Perform setup complement if some. */ |
1691 | conn->handler = conn->given = p; |
1692 | |
1693 | /* 'port' and 'remote_port' are set in setup_connection_internals() */ |
1694 | return CURLE_OK; |
1695 | } |
1696 | } |
1697 | |
1698 | /* The protocol was not found in the table, but we don't have to assign it |
1699 | to anything since it is already assigned to a dummy-struct in the |
1700 | create_conn() function when the connectdata struct is allocated. */ |
1701 | failf(data, "Protocol \"%s\" not supported or disabled in " LIBCURL_NAME, |
1702 | protostr); |
1703 | |
1704 | return CURLE_UNSUPPORTED_PROTOCOL; |
1705 | } |
1706 | |
1707 | |
1708 | CURLcode Curl_uc_to_curlcode(CURLUcode uc) |
1709 | { |
1710 | switch(uc) { |
1711 | default: |
1712 | return CURLE_URL_MALFORMAT; |
1713 | case CURLUE_UNSUPPORTED_SCHEME: |
1714 | return CURLE_UNSUPPORTED_PROTOCOL; |
1715 | case CURLUE_OUT_OF_MEMORY: |
1716 | return CURLE_OUT_OF_MEMORY; |
1717 | case CURLUE_USER_NOT_ALLOWED: |
1718 | return CURLE_LOGIN_DENIED; |
1719 | } |
1720 | } |
1721 | |
1722 | /* |
1723 | * If the URL was set with an IPv6 numerical address with a zone id part, set |
1724 | * the scope_id based on that! |
1725 | */ |
1726 | |
1727 | static void zonefrom_url(CURLU *uh, struct connectdata *conn) |
1728 | { |
1729 | char *zoneid; |
1730 | CURLUcode uc; |
1731 | |
1732 | uc = curl_url_get(uh, CURLUPART_ZONEID, &zoneid, 0); |
1733 | |
1734 | if(!uc && zoneid) { |
1735 | char *endp; |
1736 | unsigned long scope = strtoul(zoneid, &endp, 10); |
1737 | if(!*endp && (scope < UINT_MAX)) |
1738 | /* A plain number, use it directly as a scope id. */ |
1739 | conn->scope_id = (unsigned int)scope; |
1740 | #if defined(HAVE_IF_NAMETOINDEX) |
1741 | else { |
1742 | #elif defined(WIN32) |
1743 | else if(Curl_if_nametoindex) { |
1744 | #endif |
1745 | |
1746 | #if defined(HAVE_IF_NAMETOINDEX) || defined(WIN32) |
1747 | /* Zone identifier is not numeric */ |
1748 | unsigned int scopeidx = 0; |
1749 | #if defined(WIN32) |
1750 | scopeidx = Curl_if_nametoindex(zoneid); |
1751 | #else |
1752 | scopeidx = if_nametoindex(zoneid); |
1753 | #endif |
1754 | if(!scopeidx) |
1755 | infof(conn->data, "Invalid zoneid: %s; %s\n" , zoneid, |
1756 | strerror(errno)); |
1757 | else |
1758 | conn->scope_id = scopeidx; |
1759 | } |
1760 | #endif /* HAVE_IF_NAMETOINDEX || WIN32 */ |
1761 | |
1762 | free(zoneid); |
1763 | } |
1764 | } |
1765 | |
1766 | /* |
1767 | * Parse URL and fill in the relevant members of the connection struct. |
1768 | */ |
1769 | static CURLcode parseurlandfillconn(struct Curl_easy *data, |
1770 | struct connectdata *conn) |
1771 | { |
1772 | CURLcode result; |
1773 | CURLU *uh; |
1774 | CURLUcode uc; |
1775 | char *hostname; |
1776 | |
1777 | up_free(data); /* cleanup previous leftovers first */ |
1778 | |
1779 | /* parse the URL */ |
1780 | if(data->set.uh) { |
1781 | uh = data->state.uh = curl_url_dup(data->set.uh); |
1782 | } |
1783 | else { |
1784 | uh = data->state.uh = curl_url(); |
1785 | } |
1786 | |
1787 | if(!uh) |
1788 | return CURLE_OUT_OF_MEMORY; |
1789 | |
1790 | if(data->set.str[STRING_DEFAULT_PROTOCOL] && |
1791 | !Curl_is_absolute_url(data->change.url, NULL, MAX_SCHEME_LEN)) { |
1792 | char *url; |
1793 | if(data->change.url_alloc) |
1794 | free(data->change.url); |
1795 | url = aprintf("%s://%s" , data->set.str[STRING_DEFAULT_PROTOCOL], |
1796 | data->change.url); |
1797 | if(!url) |
1798 | return CURLE_OUT_OF_MEMORY; |
1799 | data->change.url = url; |
1800 | data->change.url_alloc = TRUE; |
1801 | } |
1802 | |
1803 | if(!data->set.uh) { |
1804 | char *newurl; |
1805 | uc = curl_url_set(uh, CURLUPART_URL, data->change.url, |
1806 | CURLU_GUESS_SCHEME | |
1807 | CURLU_NON_SUPPORT_SCHEME | |
1808 | (data->set.disallow_username_in_url ? |
1809 | CURLU_DISALLOW_USER : 0) | |
1810 | (data->set.path_as_is ? CURLU_PATH_AS_IS : 0)); |
1811 | if(uc) { |
1812 | DEBUGF(infof(data, "curl_url_set rejected %s\n" , data->change.url)); |
1813 | return Curl_uc_to_curlcode(uc); |
1814 | } |
1815 | |
1816 | /* after it was parsed, get the generated normalized version */ |
1817 | uc = curl_url_get(uh, CURLUPART_URL, &newurl, 0); |
1818 | if(uc) |
1819 | return Curl_uc_to_curlcode(uc); |
1820 | if(data->change.url_alloc) |
1821 | free(data->change.url); |
1822 | data->change.url = newurl; |
1823 | data->change.url_alloc = TRUE; |
1824 | } |
1825 | |
1826 | uc = curl_url_get(uh, CURLUPART_SCHEME, &data->state.up.scheme, 0); |
1827 | if(uc) |
1828 | return Curl_uc_to_curlcode(uc); |
1829 | |
1830 | result = findprotocol(data, conn, data->state.up.scheme); |
1831 | if(result) |
1832 | return result; |
1833 | |
1834 | uc = curl_url_get(uh, CURLUPART_USER, &data->state.up.user, |
1835 | CURLU_URLDECODE); |
1836 | if(!uc) { |
1837 | conn->user = strdup(data->state.up.user); |
1838 | if(!conn->user) |
1839 | return CURLE_OUT_OF_MEMORY; |
1840 | conn->bits.user_passwd = TRUE; |
1841 | } |
1842 | else if(uc != CURLUE_NO_USER) |
1843 | return Curl_uc_to_curlcode(uc); |
1844 | |
1845 | uc = curl_url_get(uh, CURLUPART_PASSWORD, &data->state.up.password, |
1846 | CURLU_URLDECODE); |
1847 | if(!uc) { |
1848 | conn->passwd = strdup(data->state.up.password); |
1849 | if(!conn->passwd) |
1850 | return CURLE_OUT_OF_MEMORY; |
1851 | conn->bits.user_passwd = TRUE; |
1852 | } |
1853 | else if(uc != CURLUE_NO_PASSWORD) |
1854 | return Curl_uc_to_curlcode(uc); |
1855 | |
1856 | uc = curl_url_get(uh, CURLUPART_OPTIONS, &data->state.up.options, |
1857 | CURLU_URLDECODE); |
1858 | if(!uc) { |
1859 | conn->options = strdup(data->state.up.options); |
1860 | if(!conn->options) |
1861 | return CURLE_OUT_OF_MEMORY; |
1862 | } |
1863 | else if(uc != CURLUE_NO_OPTIONS) |
1864 | return Curl_uc_to_curlcode(uc); |
1865 | |
1866 | uc = curl_url_get(uh, CURLUPART_HOST, &data->state.up.hostname, 0); |
1867 | if(uc) { |
1868 | if(!strcasecompare("file" , data->state.up.scheme)) |
1869 | return CURLE_OUT_OF_MEMORY; |
1870 | } |
1871 | |
1872 | uc = curl_url_get(uh, CURLUPART_PATH, &data->state.up.path, 0); |
1873 | if(uc) |
1874 | return Curl_uc_to_curlcode(uc); |
1875 | |
1876 | uc = curl_url_get(uh, CURLUPART_PORT, &data->state.up.port, |
1877 | CURLU_DEFAULT_PORT); |
1878 | if(uc) { |
1879 | if(!strcasecompare("file" , data->state.up.scheme)) |
1880 | return CURLE_OUT_OF_MEMORY; |
1881 | } |
1882 | else { |
1883 | unsigned long port = strtoul(data->state.up.port, NULL, 10); |
1884 | conn->port = conn->remote_port = curlx_ultous(port); |
1885 | } |
1886 | |
1887 | (void)curl_url_get(uh, CURLUPART_QUERY, &data->state.up.query, 0); |
1888 | |
1889 | hostname = data->state.up.hostname; |
1890 | if(hostname && hostname[0] == '[') { |
1891 | /* This looks like an IPv6 address literal. See if there is an address |
1892 | scope. */ |
1893 | size_t hlen; |
1894 | conn->bits.ipv6_ip = TRUE; |
1895 | /* cut off the brackets! */ |
1896 | hostname++; |
1897 | hlen = strlen(hostname); |
1898 | hostname[hlen - 1] = 0; |
1899 | |
1900 | zonefrom_url(uh, conn); |
1901 | } |
1902 | |
1903 | /* make sure the connect struct gets its own copy of the host name */ |
1904 | conn->host.rawalloc = strdup(hostname ? hostname : "" ); |
1905 | if(!conn->host.rawalloc) |
1906 | return CURLE_OUT_OF_MEMORY; |
1907 | conn->host.name = conn->host.rawalloc; |
1908 | |
1909 | if(data->set.scope_id) |
1910 | /* Override any scope that was set above. */ |
1911 | conn->scope_id = data->set.scope_id; |
1912 | |
1913 | return CURLE_OK; |
1914 | } |
1915 | |
1916 | |
1917 | /* |
1918 | * If we're doing a resumed transfer, we need to setup our stuff |
1919 | * properly. |
1920 | */ |
1921 | static CURLcode setup_range(struct Curl_easy *data) |
1922 | { |
1923 | struct UrlState *s = &data->state; |
1924 | s->resume_from = data->set.set_resume_from; |
1925 | if(s->resume_from || data->set.str[STRING_SET_RANGE]) { |
1926 | if(s->rangestringalloc) |
1927 | free(s->range); |
1928 | |
1929 | if(s->resume_from) |
1930 | s->range = aprintf("%" CURL_FORMAT_CURL_OFF_T "-" , s->resume_from); |
1931 | else |
1932 | s->range = strdup(data->set.str[STRING_SET_RANGE]); |
1933 | |
1934 | s->rangestringalloc = (s->range) ? TRUE : FALSE; |
1935 | |
1936 | if(!s->range) |
1937 | return CURLE_OUT_OF_MEMORY; |
1938 | |
1939 | /* tell ourselves to fetch this range */ |
1940 | s->use_range = TRUE; /* enable range download */ |
1941 | } |
1942 | else |
1943 | s->use_range = FALSE; /* disable range download */ |
1944 | |
1945 | return CURLE_OK; |
1946 | } |
1947 | |
1948 | |
1949 | /* |
1950 | * setup_connection_internals() - |
1951 | * |
1952 | * Setup connection internals specific to the requested protocol in the |
1953 | * Curl_easy. This is inited and setup before the connection is made but |
1954 | * is about the particular protocol that is to be used. |
1955 | * |
1956 | * This MUST get called after proxy magic has been figured out. |
1957 | */ |
1958 | static CURLcode setup_connection_internals(struct connectdata *conn) |
1959 | { |
1960 | const struct Curl_handler * p; |
1961 | CURLcode result; |
1962 | |
1963 | /* Perform setup complement if some. */ |
1964 | p = conn->handler; |
1965 | |
1966 | if(p->setup_connection) { |
1967 | result = (*p->setup_connection)(conn); |
1968 | |
1969 | if(result) |
1970 | return result; |
1971 | |
1972 | p = conn->handler; /* May have changed. */ |
1973 | } |
1974 | |
1975 | if(conn->port < 0) |
1976 | /* we check for -1 here since if proxy was detected already, this |
1977 | was very likely already set to the proxy port */ |
1978 | conn->port = p->defport; |
1979 | |
1980 | return CURLE_OK; |
1981 | } |
1982 | |
1983 | /* |
1984 | * Curl_free_request_state() should free temp data that was allocated in the |
1985 | * Curl_easy for this single request. |
1986 | */ |
1987 | |
1988 | void Curl_free_request_state(struct Curl_easy *data) |
1989 | { |
1990 | Curl_safefree(data->req.protop); |
1991 | Curl_safefree(data->req.newurl); |
1992 | |
1993 | #ifndef CURL_DISABLE_DOH |
1994 | Curl_close(&data->req.doh.probe[0].easy); |
1995 | Curl_close(&data->req.doh.probe[1].easy); |
1996 | #endif |
1997 | } |
1998 | |
1999 | |
2000 | #ifndef CURL_DISABLE_PROXY |
2001 | /**************************************************************** |
2002 | * Checks if the host is in the noproxy list. returns true if it matches |
2003 | * and therefore the proxy should NOT be used. |
2004 | ****************************************************************/ |
2005 | static bool check_noproxy(const char *name, const char *no_proxy) |
2006 | { |
2007 | /* no_proxy=domain1.dom,host.domain2.dom |
2008 | * (a comma-separated list of hosts which should |
2009 | * not be proxied, or an asterisk to override |
2010 | * all proxy variables) |
2011 | */ |
2012 | if(no_proxy && no_proxy[0]) { |
2013 | size_t tok_start; |
2014 | size_t tok_end; |
2015 | const char *separator = ", " ; |
2016 | size_t no_proxy_len; |
2017 | size_t namelen; |
2018 | char *endptr; |
2019 | if(strcasecompare("*" , no_proxy)) { |
2020 | return TRUE; |
2021 | } |
2022 | |
2023 | /* NO_PROXY was specified and it wasn't just an asterisk */ |
2024 | |
2025 | no_proxy_len = strlen(no_proxy); |
2026 | if(name[0] == '[') { |
2027 | /* IPv6 numerical address */ |
2028 | endptr = strchr(name, ']'); |
2029 | if(!endptr) |
2030 | return FALSE; |
2031 | name++; |
2032 | namelen = endptr - name; |
2033 | } |
2034 | else |
2035 | namelen = strlen(name); |
2036 | |
2037 | for(tok_start = 0; tok_start < no_proxy_len; tok_start = tok_end + 1) { |
2038 | while(tok_start < no_proxy_len && |
2039 | strchr(separator, no_proxy[tok_start]) != NULL) { |
2040 | /* Look for the beginning of the token. */ |
2041 | ++tok_start; |
2042 | } |
2043 | |
2044 | if(tok_start == no_proxy_len) |
2045 | break; /* It was all trailing separator chars, no more tokens. */ |
2046 | |
2047 | for(tok_end = tok_start; tok_end < no_proxy_len && |
2048 | strchr(separator, no_proxy[tok_end]) == NULL; ++tok_end) |
2049 | /* Look for the end of the token. */ |
2050 | ; |
2051 | |
2052 | /* To match previous behaviour, where it was necessary to specify |
2053 | * ".local.com" to prevent matching "notlocal.com", we will leave |
2054 | * the '.' off. |
2055 | */ |
2056 | if(no_proxy[tok_start] == '.') |
2057 | ++tok_start; |
2058 | |
2059 | if((tok_end - tok_start) <= namelen) { |
2060 | /* Match the last part of the name to the domain we are checking. */ |
2061 | const char *checkn = name + namelen - (tok_end - tok_start); |
2062 | if(strncasecompare(no_proxy + tok_start, checkn, |
2063 | tok_end - tok_start)) { |
2064 | if((tok_end - tok_start) == namelen || *(checkn - 1) == '.') { |
2065 | /* We either have an exact match, or the previous character is a . |
2066 | * so it is within the same domain, so no proxy for this host. |
2067 | */ |
2068 | return TRUE; |
2069 | } |
2070 | } |
2071 | } /* if((tok_end - tok_start) <= namelen) */ |
2072 | } /* for(tok_start = 0; tok_start < no_proxy_len; |
2073 | tok_start = tok_end + 1) */ |
2074 | } /* NO_PROXY was specified and it wasn't just an asterisk */ |
2075 | |
2076 | return FALSE; |
2077 | } |
2078 | |
2079 | #ifndef CURL_DISABLE_HTTP |
2080 | /**************************************************************** |
2081 | * Detect what (if any) proxy to use. Remember that this selects a host |
2082 | * name and is not limited to HTTP proxies only. |
2083 | * The returned pointer must be freed by the caller (unless NULL) |
2084 | ****************************************************************/ |
2085 | static char *detect_proxy(struct connectdata *conn) |
2086 | { |
2087 | char *proxy = NULL; |
2088 | |
2089 | /* If proxy was not specified, we check for default proxy environment |
2090 | * variables, to enable i.e Lynx compliance: |
2091 | * |
2092 | * http_proxy=http://some.server.dom:port/ |
2093 | * https_proxy=http://some.server.dom:port/ |
2094 | * ftp_proxy=http://some.server.dom:port/ |
2095 | * no_proxy=domain1.dom,host.domain2.dom |
2096 | * (a comma-separated list of hosts which should |
2097 | * not be proxied, or an asterisk to override |
2098 | * all proxy variables) |
2099 | * all_proxy=http://some.server.dom:port/ |
2100 | * (seems to exist for the CERN www lib. Probably |
2101 | * the first to check for.) |
2102 | * |
2103 | * For compatibility, the all-uppercase versions of these variables are |
2104 | * checked if the lowercase versions don't exist. |
2105 | */ |
2106 | char proxy_env[128]; |
2107 | const char *protop = conn->handler->scheme; |
2108 | char *envp = proxy_env; |
2109 | char *prox; |
2110 | |
2111 | /* Now, build <protocol>_proxy and check for such a one to use */ |
2112 | while(*protop) |
2113 | *envp++ = (char)tolower((int)*protop++); |
2114 | |
2115 | /* append _proxy */ |
2116 | strcpy(envp, "_proxy" ); |
2117 | |
2118 | /* read the protocol proxy: */ |
2119 | prox = curl_getenv(proxy_env); |
2120 | |
2121 | /* |
2122 | * We don't try the uppercase version of HTTP_PROXY because of |
2123 | * security reasons: |
2124 | * |
2125 | * When curl is used in a webserver application |
2126 | * environment (cgi or php), this environment variable can |
2127 | * be controlled by the web server user by setting the |
2128 | * http header 'Proxy:' to some value. |
2129 | * |
2130 | * This can cause 'internal' http/ftp requests to be |
2131 | * arbitrarily redirected by any external attacker. |
2132 | */ |
2133 | if(!prox && !strcasecompare("http_proxy" , proxy_env)) { |
2134 | /* There was no lowercase variable, try the uppercase version: */ |
2135 | Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env)); |
2136 | prox = curl_getenv(proxy_env); |
2137 | } |
2138 | |
2139 | envp = proxy_env; |
2140 | if(prox) { |
2141 | proxy = prox; /* use this */ |
2142 | } |
2143 | else { |
2144 | envp = (char *)"all_proxy" ; |
2145 | proxy = curl_getenv(envp); /* default proxy to use */ |
2146 | if(!proxy) { |
2147 | envp = (char *)"ALL_PROXY" ; |
2148 | proxy = curl_getenv(envp); |
2149 | } |
2150 | } |
2151 | if(proxy) |
2152 | infof(conn->data, "Uses proxy env variable %s == '%s'\n" , envp, proxy); |
2153 | |
2154 | return proxy; |
2155 | } |
2156 | #endif /* CURL_DISABLE_HTTP */ |
2157 | |
2158 | /* |
2159 | * If this is supposed to use a proxy, we need to figure out the proxy |
2160 | * host name, so that we can re-use an existing connection |
2161 | * that may exist registered to the same proxy host. |
2162 | */ |
2163 | static CURLcode parse_proxy(struct Curl_easy *data, |
2164 | struct connectdata *conn, char *proxy, |
2165 | curl_proxytype proxytype) |
2166 | { |
2167 | char *portptr = NULL; |
2168 | long port = -1; |
2169 | char *proxyuser = NULL; |
2170 | char *proxypasswd = NULL; |
2171 | char *host; |
2172 | bool sockstype; |
2173 | CURLUcode uc; |
2174 | struct proxy_info *proxyinfo; |
2175 | CURLU *uhp = curl_url(); |
2176 | CURLcode result = CURLE_OK; |
2177 | char *scheme = NULL; |
2178 | |
2179 | /* When parsing the proxy, allowing non-supported schemes since we have |
2180 | these made up ones for proxies. Guess scheme for URLs without it. */ |
2181 | uc = curl_url_set(uhp, CURLUPART_URL, proxy, |
2182 | CURLU_NON_SUPPORT_SCHEME|CURLU_GUESS_SCHEME); |
2183 | if(!uc) { |
2184 | /* parsed okay as a URL */ |
2185 | uc = curl_url_get(uhp, CURLUPART_SCHEME, &scheme, 0); |
2186 | if(uc) { |
2187 | result = CURLE_OUT_OF_MEMORY; |
2188 | goto error; |
2189 | } |
2190 | |
2191 | if(strcasecompare("https" , scheme)) |
2192 | proxytype = CURLPROXY_HTTPS; |
2193 | else if(strcasecompare("socks5h" , scheme)) |
2194 | proxytype = CURLPROXY_SOCKS5_HOSTNAME; |
2195 | else if(strcasecompare("socks5" , scheme)) |
2196 | proxytype = CURLPROXY_SOCKS5; |
2197 | else if(strcasecompare("socks4a" , scheme)) |
2198 | proxytype = CURLPROXY_SOCKS4A; |
2199 | else if(strcasecompare("socks4" , scheme) || |
2200 | strcasecompare("socks" , scheme)) |
2201 | proxytype = CURLPROXY_SOCKS4; |
2202 | else if(strcasecompare("http" , scheme)) |
2203 | ; /* leave it as HTTP or HTTP/1.0 */ |
2204 | else { |
2205 | /* Any other xxx:// reject! */ |
2206 | failf(data, "Unsupported proxy scheme for \'%s\'" , proxy); |
2207 | result = CURLE_COULDNT_CONNECT; |
2208 | goto error; |
2209 | } |
2210 | } |
2211 | else { |
2212 | failf(data, "Unsupported proxy syntax in \'%s\'" , proxy); |
2213 | result = CURLE_COULDNT_RESOLVE_PROXY; |
2214 | goto error; |
2215 | } |
2216 | |
2217 | #ifdef USE_SSL |
2218 | if(!(Curl_ssl->supports & SSLSUPP_HTTPS_PROXY)) |
2219 | #endif |
2220 | if(proxytype == CURLPROXY_HTTPS) { |
2221 | failf(data, "Unsupported proxy \'%s\', libcurl is built without the " |
2222 | "HTTPS-proxy support." , proxy); |
2223 | result = CURLE_NOT_BUILT_IN; |
2224 | goto error; |
2225 | } |
2226 | |
2227 | sockstype = |
2228 | proxytype == CURLPROXY_SOCKS5_HOSTNAME || |
2229 | proxytype == CURLPROXY_SOCKS5 || |
2230 | proxytype == CURLPROXY_SOCKS4A || |
2231 | proxytype == CURLPROXY_SOCKS4; |
2232 | |
2233 | proxyinfo = sockstype ? &conn->socks_proxy : &conn->http_proxy; |
2234 | proxyinfo->proxytype = proxytype; |
2235 | |
2236 | /* Is there a username and password given in this proxy url? */ |
2237 | curl_url_get(uhp, CURLUPART_USER, &proxyuser, CURLU_URLDECODE); |
2238 | curl_url_get(uhp, CURLUPART_PASSWORD, &proxypasswd, CURLU_URLDECODE); |
2239 | if(proxyuser || proxypasswd) { |
2240 | Curl_safefree(proxyinfo->user); |
2241 | proxyinfo->user = proxyuser; |
2242 | Curl_safefree(proxyinfo->passwd); |
2243 | if(!proxypasswd) { |
2244 | proxypasswd = strdup("" ); |
2245 | if(!proxypasswd) { |
2246 | result = CURLE_OUT_OF_MEMORY; |
2247 | goto error; |
2248 | } |
2249 | } |
2250 | proxyinfo->passwd = proxypasswd; |
2251 | conn->bits.proxy_user_passwd = TRUE; /* enable it */ |
2252 | } |
2253 | |
2254 | curl_url_get(uhp, CURLUPART_PORT, &portptr, 0); |
2255 | |
2256 | if(portptr) { |
2257 | port = strtol(portptr, NULL, 10); |
2258 | free(portptr); |
2259 | } |
2260 | else { |
2261 | if(data->set.proxyport) |
2262 | /* None given in the proxy string, then get the default one if it is |
2263 | given */ |
2264 | port = data->set.proxyport; |
2265 | else { |
2266 | if(proxytype == CURLPROXY_HTTPS) |
2267 | port = CURL_DEFAULT_HTTPS_PROXY_PORT; |
2268 | else |
2269 | port = CURL_DEFAULT_PROXY_PORT; |
2270 | } |
2271 | } |
2272 | if(port >= 0) { |
2273 | proxyinfo->port = port; |
2274 | if(conn->port < 0 || sockstype || !conn->socks_proxy.host.rawalloc) |
2275 | conn->port = port; |
2276 | } |
2277 | |
2278 | /* now, clone the proxy host name */ |
2279 | uc = curl_url_get(uhp, CURLUPART_HOST, &host, CURLU_URLDECODE); |
2280 | if(uc) { |
2281 | result = CURLE_OUT_OF_MEMORY; |
2282 | goto error; |
2283 | } |
2284 | Curl_safefree(proxyinfo->host.rawalloc); |
2285 | proxyinfo->host.rawalloc = host; |
2286 | if(host[0] == '[') { |
2287 | /* this is a numerical IPv6, strip off the brackets */ |
2288 | size_t len = strlen(host); |
2289 | host[len-1] = 0; /* clear the trailing bracket */ |
2290 | host++; |
2291 | zonefrom_url(uhp, conn); |
2292 | } |
2293 | proxyinfo->host.name = host; |
2294 | |
2295 | error: |
2296 | free(scheme); |
2297 | curl_url_cleanup(uhp); |
2298 | return result; |
2299 | } |
2300 | |
2301 | /* |
2302 | * Extract the user and password from the authentication string |
2303 | */ |
2304 | static CURLcode parse_proxy_auth(struct Curl_easy *data, |
2305 | struct connectdata *conn) |
2306 | { |
2307 | char proxyuser[MAX_CURL_USER_LENGTH]="" ; |
2308 | char proxypasswd[MAX_CURL_PASSWORD_LENGTH]="" ; |
2309 | CURLcode result; |
2310 | |
2311 | if(data->set.str[STRING_PROXYUSERNAME] != NULL) { |
2312 | strncpy(proxyuser, data->set.str[STRING_PROXYUSERNAME], |
2313 | MAX_CURL_USER_LENGTH); |
2314 | proxyuser[MAX_CURL_USER_LENGTH-1] = '\0'; /*To be on safe side*/ |
2315 | } |
2316 | if(data->set.str[STRING_PROXYPASSWORD] != NULL) { |
2317 | strncpy(proxypasswd, data->set.str[STRING_PROXYPASSWORD], |
2318 | MAX_CURL_PASSWORD_LENGTH); |
2319 | proxypasswd[MAX_CURL_PASSWORD_LENGTH-1] = '\0'; /*To be on safe side*/ |
2320 | } |
2321 | |
2322 | result = Curl_urldecode(data, proxyuser, 0, &conn->http_proxy.user, NULL, |
2323 | FALSE); |
2324 | if(!result) |
2325 | result = Curl_urldecode(data, proxypasswd, 0, &conn->http_proxy.passwd, |
2326 | NULL, FALSE); |
2327 | return result; |
2328 | } |
2329 | |
2330 | /* create_conn helper to parse and init proxy values. to be called after unix |
2331 | socket init but before any proxy vars are evaluated. */ |
2332 | static CURLcode create_conn_helper_init_proxy(struct connectdata *conn) |
2333 | { |
2334 | char *proxy = NULL; |
2335 | char *socksproxy = NULL; |
2336 | char *no_proxy = NULL; |
2337 | CURLcode result = CURLE_OK; |
2338 | struct Curl_easy *data = conn->data; |
2339 | |
2340 | /************************************************************* |
2341 | * Extract the user and password from the authentication string |
2342 | *************************************************************/ |
2343 | if(conn->bits.proxy_user_passwd) { |
2344 | result = parse_proxy_auth(data, conn); |
2345 | if(result) |
2346 | goto out; |
2347 | } |
2348 | |
2349 | /************************************************************* |
2350 | * Detect what (if any) proxy to use |
2351 | *************************************************************/ |
2352 | if(data->set.str[STRING_PROXY]) { |
2353 | proxy = strdup(data->set.str[STRING_PROXY]); |
2354 | /* if global proxy is set, this is it */ |
2355 | if(NULL == proxy) { |
2356 | failf(data, "memory shortage" ); |
2357 | result = CURLE_OUT_OF_MEMORY; |
2358 | goto out; |
2359 | } |
2360 | } |
2361 | |
2362 | if(data->set.str[STRING_PRE_PROXY]) { |
2363 | socksproxy = strdup(data->set.str[STRING_PRE_PROXY]); |
2364 | /* if global socks proxy is set, this is it */ |
2365 | if(NULL == socksproxy) { |
2366 | failf(data, "memory shortage" ); |
2367 | result = CURLE_OUT_OF_MEMORY; |
2368 | goto out; |
2369 | } |
2370 | } |
2371 | |
2372 | if(!data->set.str[STRING_NOPROXY]) { |
2373 | const char *p = "no_proxy" ; |
2374 | no_proxy = curl_getenv(p); |
2375 | if(!no_proxy) { |
2376 | p = "NO_PROXY" ; |
2377 | no_proxy = curl_getenv(p); |
2378 | } |
2379 | if(no_proxy) { |
2380 | infof(conn->data, "Uses proxy env variable %s == '%s'\n" , p, no_proxy); |
2381 | } |
2382 | } |
2383 | |
2384 | if(check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY] ? |
2385 | data->set.str[STRING_NOPROXY] : no_proxy)) { |
2386 | Curl_safefree(proxy); |
2387 | Curl_safefree(socksproxy); |
2388 | } |
2389 | #ifndef CURL_DISABLE_HTTP |
2390 | else if(!proxy && !socksproxy) |
2391 | /* if the host is not in the noproxy list, detect proxy. */ |
2392 | proxy = detect_proxy(conn); |
2393 | #endif /* CURL_DISABLE_HTTP */ |
2394 | |
2395 | Curl_safefree(no_proxy); |
2396 | |
2397 | #ifdef USE_UNIX_SOCKETS |
2398 | /* For the time being do not mix proxy and unix domain sockets. See #1274 */ |
2399 | if(proxy && conn->unix_domain_socket) { |
2400 | free(proxy); |
2401 | proxy = NULL; |
2402 | } |
2403 | #endif |
2404 | |
2405 | if(proxy && (!*proxy || (conn->handler->flags & PROTOPT_NONETWORK))) { |
2406 | free(proxy); /* Don't bother with an empty proxy string or if the |
2407 | protocol doesn't work with network */ |
2408 | proxy = NULL; |
2409 | } |
2410 | if(socksproxy && (!*socksproxy || |
2411 | (conn->handler->flags & PROTOPT_NONETWORK))) { |
2412 | free(socksproxy); /* Don't bother with an empty socks proxy string or if |
2413 | the protocol doesn't work with network */ |
2414 | socksproxy = NULL; |
2415 | } |
2416 | |
2417 | /*********************************************************************** |
2418 | * If this is supposed to use a proxy, we need to figure out the proxy host |
2419 | * name, proxy type and port number, so that we can re-use an existing |
2420 | * connection that may exist registered to the same proxy host. |
2421 | ***********************************************************************/ |
2422 | if(proxy || socksproxy) { |
2423 | if(proxy) { |
2424 | result = parse_proxy(data, conn, proxy, conn->http_proxy.proxytype); |
2425 | Curl_safefree(proxy); /* parse_proxy copies the proxy string */ |
2426 | if(result) |
2427 | goto out; |
2428 | } |
2429 | |
2430 | if(socksproxy) { |
2431 | result = parse_proxy(data, conn, socksproxy, |
2432 | conn->socks_proxy.proxytype); |
2433 | /* parse_proxy copies the socks proxy string */ |
2434 | Curl_safefree(socksproxy); |
2435 | if(result) |
2436 | goto out; |
2437 | } |
2438 | |
2439 | if(conn->http_proxy.host.rawalloc) { |
2440 | #ifdef CURL_DISABLE_HTTP |
2441 | /* asking for a HTTP proxy is a bit funny when HTTP is disabled... */ |
2442 | result = CURLE_UNSUPPORTED_PROTOCOL; |
2443 | goto out; |
2444 | #else |
2445 | /* force this connection's protocol to become HTTP if compatible */ |
2446 | if(!(conn->handler->protocol & PROTO_FAMILY_HTTP)) { |
2447 | if((conn->handler->flags & PROTOPT_PROXY_AS_HTTP) && |
2448 | !conn->bits.tunnel_proxy) |
2449 | conn->handler = &Curl_handler_http; |
2450 | else |
2451 | /* if not converting to HTTP over the proxy, enforce tunneling */ |
2452 | conn->bits.tunnel_proxy = TRUE; |
2453 | } |
2454 | conn->bits.httpproxy = TRUE; |
2455 | #endif |
2456 | } |
2457 | else { |
2458 | conn->bits.httpproxy = FALSE; /* not a HTTP proxy */ |
2459 | conn->bits.tunnel_proxy = FALSE; /* no tunneling if not HTTP */ |
2460 | } |
2461 | |
2462 | if(conn->socks_proxy.host.rawalloc) { |
2463 | if(!conn->http_proxy.host.rawalloc) { |
2464 | /* once a socks proxy */ |
2465 | if(!conn->socks_proxy.user) { |
2466 | conn->socks_proxy.user = conn->http_proxy.user; |
2467 | conn->http_proxy.user = NULL; |
2468 | Curl_safefree(conn->socks_proxy.passwd); |
2469 | conn->socks_proxy.passwd = conn->http_proxy.passwd; |
2470 | conn->http_proxy.passwd = NULL; |
2471 | } |
2472 | } |
2473 | conn->bits.socksproxy = TRUE; |
2474 | } |
2475 | else |
2476 | conn->bits.socksproxy = FALSE; /* not a socks proxy */ |
2477 | } |
2478 | else { |
2479 | conn->bits.socksproxy = FALSE; |
2480 | conn->bits.httpproxy = FALSE; |
2481 | } |
2482 | conn->bits.proxy = conn->bits.httpproxy || conn->bits.socksproxy; |
2483 | |
2484 | if(!conn->bits.proxy) { |
2485 | /* we aren't using the proxy after all... */ |
2486 | conn->bits.proxy = FALSE; |
2487 | conn->bits.httpproxy = FALSE; |
2488 | conn->bits.socksproxy = FALSE; |
2489 | conn->bits.proxy_user_passwd = FALSE; |
2490 | conn->bits.tunnel_proxy = FALSE; |
2491 | } |
2492 | |
2493 | out: |
2494 | |
2495 | free(socksproxy); |
2496 | free(proxy); |
2497 | return result; |
2498 | } |
2499 | #endif /* CURL_DISABLE_PROXY */ |
2500 | |
2501 | /* |
2502 | * Curl_parse_login_details() |
2503 | * |
2504 | * This is used to parse a login string for user name, password and options in |
2505 | * the following formats: |
2506 | * |
2507 | * user |
2508 | * user:password |
2509 | * user:password;options |
2510 | * user;options |
2511 | * user;options:password |
2512 | * :password |
2513 | * :password;options |
2514 | * ;options |
2515 | * ;options:password |
2516 | * |
2517 | * Parameters: |
2518 | * |
2519 | * login [in] - The login string. |
2520 | * len [in] - The length of the login string. |
2521 | * userp [in/out] - The address where a pointer to newly allocated memory |
2522 | * holding the user will be stored upon completion. |
2523 | * passwdp [in/out] - The address where a pointer to newly allocated memory |
2524 | * holding the password will be stored upon completion. |
2525 | * optionsp [in/out] - The address where a pointer to newly allocated memory |
2526 | * holding the options will be stored upon completion. |
2527 | * |
2528 | * Returns CURLE_OK on success. |
2529 | */ |
2530 | CURLcode Curl_parse_login_details(const char *login, const size_t len, |
2531 | char **userp, char **passwdp, |
2532 | char **optionsp) |
2533 | { |
2534 | CURLcode result = CURLE_OK; |
2535 | char *ubuf = NULL; |
2536 | char *pbuf = NULL; |
2537 | char *obuf = NULL; |
2538 | const char *psep = NULL; |
2539 | const char *osep = NULL; |
2540 | size_t ulen; |
2541 | size_t plen; |
2542 | size_t olen; |
2543 | |
2544 | /* Attempt to find the password separator */ |
2545 | if(passwdp) { |
2546 | psep = strchr(login, ':'); |
2547 | |
2548 | /* Within the constraint of the login string */ |
2549 | if(psep >= login + len) |
2550 | psep = NULL; |
2551 | } |
2552 | |
2553 | /* Attempt to find the options separator */ |
2554 | if(optionsp) { |
2555 | osep = strchr(login, ';'); |
2556 | |
2557 | /* Within the constraint of the login string */ |
2558 | if(osep >= login + len) |
2559 | osep = NULL; |
2560 | } |
2561 | |
2562 | /* Calculate the portion lengths */ |
2563 | ulen = (psep ? |
2564 | (size_t)(osep && psep > osep ? osep - login : psep - login) : |
2565 | (osep ? (size_t)(osep - login) : len)); |
2566 | plen = (psep ? |
2567 | (osep && osep > psep ? (size_t)(osep - psep) : |
2568 | (size_t)(login + len - psep)) - 1 : 0); |
2569 | olen = (osep ? |
2570 | (psep && psep > osep ? (size_t)(psep - osep) : |
2571 | (size_t)(login + len - osep)) - 1 : 0); |
2572 | |
2573 | /* Allocate the user portion buffer */ |
2574 | if(userp && ulen) { |
2575 | ubuf = malloc(ulen + 1); |
2576 | if(!ubuf) |
2577 | result = CURLE_OUT_OF_MEMORY; |
2578 | } |
2579 | |
2580 | /* Allocate the password portion buffer */ |
2581 | if(!result && passwdp && plen) { |
2582 | pbuf = malloc(plen + 1); |
2583 | if(!pbuf) { |
2584 | free(ubuf); |
2585 | result = CURLE_OUT_OF_MEMORY; |
2586 | } |
2587 | } |
2588 | |
2589 | /* Allocate the options portion buffer */ |
2590 | if(!result && optionsp && olen) { |
2591 | obuf = malloc(olen + 1); |
2592 | if(!obuf) { |
2593 | free(pbuf); |
2594 | free(ubuf); |
2595 | result = CURLE_OUT_OF_MEMORY; |
2596 | } |
2597 | } |
2598 | |
2599 | if(!result) { |
2600 | /* Store the user portion if necessary */ |
2601 | if(ubuf) { |
2602 | memcpy(ubuf, login, ulen); |
2603 | ubuf[ulen] = '\0'; |
2604 | Curl_safefree(*userp); |
2605 | *userp = ubuf; |
2606 | } |
2607 | |
2608 | /* Store the password portion if necessary */ |
2609 | if(pbuf) { |
2610 | memcpy(pbuf, psep + 1, plen); |
2611 | pbuf[plen] = '\0'; |
2612 | Curl_safefree(*passwdp); |
2613 | *passwdp = pbuf; |
2614 | } |
2615 | |
2616 | /* Store the options portion if necessary */ |
2617 | if(obuf) { |
2618 | memcpy(obuf, osep + 1, olen); |
2619 | obuf[olen] = '\0'; |
2620 | Curl_safefree(*optionsp); |
2621 | *optionsp = obuf; |
2622 | } |
2623 | } |
2624 | |
2625 | return result; |
2626 | } |
2627 | |
2628 | /************************************************************* |
2629 | * Figure out the remote port number and fix it in the URL |
2630 | * |
2631 | * No matter if we use a proxy or not, we have to figure out the remote |
2632 | * port number of various reasons. |
2633 | * |
2634 | * The port number embedded in the URL is replaced, if necessary. |
2635 | *************************************************************/ |
2636 | static CURLcode parse_remote_port(struct Curl_easy *data, |
2637 | struct connectdata *conn) |
2638 | { |
2639 | |
2640 | if(data->set.use_port && data->state.allow_port) { |
2641 | /* if set, we use this instead of the port possibly given in the URL */ |
2642 | char portbuf[16]; |
2643 | CURLUcode uc; |
2644 | conn->remote_port = (unsigned short)data->set.use_port; |
2645 | msnprintf(portbuf, sizeof(portbuf), "%d" , conn->remote_port); |
2646 | uc = curl_url_set(data->state.uh, CURLUPART_PORT, portbuf, 0); |
2647 | if(uc) |
2648 | return CURLE_OUT_OF_MEMORY; |
2649 | } |
2650 | |
2651 | return CURLE_OK; |
2652 | } |
2653 | |
2654 | /* |
2655 | * Override the login details from the URL with that in the CURLOPT_USERPWD |
2656 | * option or a .netrc file, if applicable. |
2657 | */ |
2658 | static CURLcode override_login(struct Curl_easy *data, |
2659 | struct connectdata *conn, |
2660 | char **userp, char **passwdp, char **optionsp) |
2661 | { |
2662 | bool user_changed = FALSE; |
2663 | bool passwd_changed = FALSE; |
2664 | CURLUcode uc; |
2665 | |
2666 | if(data->set.use_netrc == CURL_NETRC_REQUIRED && conn->bits.user_passwd) { |
2667 | /* ignore user+password in the URL */ |
2668 | if(*userp) { |
2669 | Curl_safefree(*userp); |
2670 | user_changed = TRUE; |
2671 | } |
2672 | if(*passwdp) { |
2673 | Curl_safefree(*passwdp); |
2674 | passwd_changed = TRUE; |
2675 | } |
2676 | conn->bits.user_passwd = FALSE; /* disable user+password */ |
2677 | } |
2678 | |
2679 | if(data->set.str[STRING_USERNAME]) { |
2680 | free(*userp); |
2681 | *userp = strdup(data->set.str[STRING_USERNAME]); |
2682 | if(!*userp) |
2683 | return CURLE_OUT_OF_MEMORY; |
2684 | conn->bits.user_passwd = TRUE; /* enable user+password */ |
2685 | user_changed = TRUE; |
2686 | } |
2687 | |
2688 | if(data->set.str[STRING_PASSWORD]) { |
2689 | free(*passwdp); |
2690 | *passwdp = strdup(data->set.str[STRING_PASSWORD]); |
2691 | if(!*passwdp) |
2692 | return CURLE_OUT_OF_MEMORY; |
2693 | conn->bits.user_passwd = TRUE; /* enable user+password */ |
2694 | passwd_changed = TRUE; |
2695 | } |
2696 | |
2697 | if(data->set.str[STRING_OPTIONS]) { |
2698 | free(*optionsp); |
2699 | *optionsp = strdup(data->set.str[STRING_OPTIONS]); |
2700 | if(!*optionsp) |
2701 | return CURLE_OUT_OF_MEMORY; |
2702 | } |
2703 | |
2704 | conn->bits.netrc = FALSE; |
2705 | if(data->set.use_netrc != CURL_NETRC_IGNORED && |
2706 | (!*userp || !**userp || !*passwdp || !**passwdp)) { |
2707 | bool netrc_user_changed = FALSE; |
2708 | bool netrc_passwd_changed = FALSE; |
2709 | int ret; |
2710 | |
2711 | ret = Curl_parsenetrc(conn->host.name, |
2712 | userp, passwdp, |
2713 | &netrc_user_changed, &netrc_passwd_changed, |
2714 | data->set.str[STRING_NETRC_FILE]); |
2715 | if(ret > 0) { |
2716 | infof(data, "Couldn't find host %s in the .netrc file; using defaults\n" , |
2717 | conn->host.name); |
2718 | } |
2719 | else if(ret < 0) { |
2720 | return CURLE_OUT_OF_MEMORY; |
2721 | } |
2722 | else { |
2723 | /* set bits.netrc TRUE to remember that we got the name from a .netrc |
2724 | file, so that it is safe to use even if we followed a Location: to a |
2725 | different host or similar. */ |
2726 | conn->bits.netrc = TRUE; |
2727 | conn->bits.user_passwd = TRUE; /* enable user+password */ |
2728 | |
2729 | if(netrc_user_changed) { |
2730 | user_changed = TRUE; |
2731 | } |
2732 | if(netrc_passwd_changed) { |
2733 | passwd_changed = TRUE; |
2734 | } |
2735 | } |
2736 | } |
2737 | |
2738 | /* for updated strings, we update them in the URL */ |
2739 | if(user_changed) { |
2740 | uc = curl_url_set(data->state.uh, CURLUPART_USER, *userp, 0); |
2741 | if(uc) |
2742 | return Curl_uc_to_curlcode(uc); |
2743 | } |
2744 | if(passwd_changed) { |
2745 | uc = curl_url_set(data->state.uh, CURLUPART_PASSWORD, *passwdp, 0); |
2746 | if(uc) |
2747 | return Curl_uc_to_curlcode(uc); |
2748 | } |
2749 | return CURLE_OK; |
2750 | } |
2751 | |
2752 | /* |
2753 | * Set the login details so they're available in the connection |
2754 | */ |
2755 | static CURLcode set_login(struct connectdata *conn) |
2756 | { |
2757 | CURLcode result = CURLE_OK; |
2758 | const char *setuser = CURL_DEFAULT_USER; |
2759 | const char *setpasswd = CURL_DEFAULT_PASSWORD; |
2760 | |
2761 | /* If our protocol needs a password and we have none, use the defaults */ |
2762 | if((conn->handler->flags & PROTOPT_NEEDSPWD) && !conn->bits.user_passwd) |
2763 | ; |
2764 | else { |
2765 | setuser = "" ; |
2766 | setpasswd = "" ; |
2767 | } |
2768 | /* Store the default user */ |
2769 | if(!conn->user) { |
2770 | conn->user = strdup(setuser); |
2771 | if(!conn->user) |
2772 | return CURLE_OUT_OF_MEMORY; |
2773 | } |
2774 | |
2775 | /* Store the default password */ |
2776 | if(!conn->passwd) { |
2777 | conn->passwd = strdup(setpasswd); |
2778 | if(!conn->passwd) |
2779 | result = CURLE_OUT_OF_MEMORY; |
2780 | } |
2781 | |
2782 | return result; |
2783 | } |
2784 | |
2785 | /* |
2786 | * Parses a "host:port" string to connect to. |
2787 | * The hostname and the port may be empty; in this case, NULL is returned for |
2788 | * the hostname and -1 for the port. |
2789 | */ |
2790 | static CURLcode parse_connect_to_host_port(struct Curl_easy *data, |
2791 | const char *host, |
2792 | char **hostname_result, |
2793 | int *port_result) |
2794 | { |
2795 | char *host_dup; |
2796 | char *hostptr; |
2797 | char *host_portno; |
2798 | char *portptr; |
2799 | int port = -1; |
2800 | |
2801 | #if defined(CURL_DISABLE_VERBOSE_STRINGS) |
2802 | (void) data; |
2803 | #endif |
2804 | |
2805 | *hostname_result = NULL; |
2806 | *port_result = -1; |
2807 | |
2808 | if(!host || !*host) |
2809 | return CURLE_OK; |
2810 | |
2811 | host_dup = strdup(host); |
2812 | if(!host_dup) |
2813 | return CURLE_OUT_OF_MEMORY; |
2814 | |
2815 | hostptr = host_dup; |
2816 | |
2817 | /* start scanning for port number at this point */ |
2818 | portptr = hostptr; |
2819 | |
2820 | /* detect and extract RFC6874-style IPv6-addresses */ |
2821 | if(*hostptr == '[') { |
2822 | #ifdef ENABLE_IPV6 |
2823 | char *ptr = ++hostptr; /* advance beyond the initial bracket */ |
2824 | while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.'))) |
2825 | ptr++; |
2826 | if(*ptr == '%') { |
2827 | /* There might be a zone identifier */ |
2828 | if(strncmp("%25" , ptr, 3)) |
2829 | infof(data, "Please URL encode %% as %%25, see RFC 6874.\n" ); |
2830 | ptr++; |
2831 | /* Allow unreserved characters as defined in RFC 3986 */ |
2832 | while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') || |
2833 | (*ptr == '.') || (*ptr == '_') || (*ptr == '~'))) |
2834 | ptr++; |
2835 | } |
2836 | if(*ptr == ']') |
2837 | /* yeps, it ended nicely with a bracket as well */ |
2838 | *ptr++ = '\0'; |
2839 | else |
2840 | infof(data, "Invalid IPv6 address format\n" ); |
2841 | portptr = ptr; |
2842 | /* Note that if this didn't end with a bracket, we still advanced the |
2843 | * hostptr first, but I can't see anything wrong with that as no host |
2844 | * name nor a numeric can legally start with a bracket. |
2845 | */ |
2846 | #else |
2847 | failf(data, "Use of IPv6 in *_CONNECT_TO without IPv6 support built-in!" ); |
2848 | free(host_dup); |
2849 | return CURLE_NOT_BUILT_IN; |
2850 | #endif |
2851 | } |
2852 | |
2853 | /* Get port number off server.com:1080 */ |
2854 | host_portno = strchr(portptr, ':'); |
2855 | if(host_portno) { |
2856 | char *endp = NULL; |
2857 | *host_portno = '\0'; /* cut off number from host name */ |
2858 | host_portno++; |
2859 | if(*host_portno) { |
2860 | long portparse = strtol(host_portno, &endp, 10); |
2861 | if((endp && *endp) || (portparse < 0) || (portparse > 65535)) { |
2862 | infof(data, "No valid port number in connect to host string (%s)\n" , |
2863 | host_portno); |
2864 | hostptr = NULL; |
2865 | port = -1; |
2866 | } |
2867 | else |
2868 | port = (int)portparse; /* we know it will fit */ |
2869 | } |
2870 | } |
2871 | |
2872 | /* now, clone the cleaned host name */ |
2873 | if(hostptr) { |
2874 | *hostname_result = strdup(hostptr); |
2875 | if(!*hostname_result) { |
2876 | free(host_dup); |
2877 | return CURLE_OUT_OF_MEMORY; |
2878 | } |
2879 | } |
2880 | |
2881 | *port_result = port; |
2882 | |
2883 | free(host_dup); |
2884 | return CURLE_OK; |
2885 | } |
2886 | |
2887 | /* |
2888 | * Parses one "connect to" string in the form: |
2889 | * "HOST:PORT:CONNECT-TO-HOST:CONNECT-TO-PORT". |
2890 | */ |
2891 | static CURLcode parse_connect_to_string(struct Curl_easy *data, |
2892 | struct connectdata *conn, |
2893 | const char *conn_to_host, |
2894 | char **host_result, |
2895 | int *port_result) |
2896 | { |
2897 | CURLcode result = CURLE_OK; |
2898 | const char *ptr = conn_to_host; |
2899 | int host_match = FALSE; |
2900 | int port_match = FALSE; |
2901 | |
2902 | *host_result = NULL; |
2903 | *port_result = -1; |
2904 | |
2905 | if(*ptr == ':') { |
2906 | /* an empty hostname always matches */ |
2907 | host_match = TRUE; |
2908 | ptr++; |
2909 | } |
2910 | else { |
2911 | /* check whether the URL's hostname matches */ |
2912 | size_t hostname_to_match_len; |
2913 | char *hostname_to_match = aprintf("%s%s%s" , |
2914 | conn->bits.ipv6_ip ? "[" : "" , |
2915 | conn->host.name, |
2916 | conn->bits.ipv6_ip ? "]" : "" ); |
2917 | if(!hostname_to_match) |
2918 | return CURLE_OUT_OF_MEMORY; |
2919 | hostname_to_match_len = strlen(hostname_to_match); |
2920 | host_match = strncasecompare(ptr, hostname_to_match, |
2921 | hostname_to_match_len); |
2922 | free(hostname_to_match); |
2923 | ptr += hostname_to_match_len; |
2924 | |
2925 | host_match = host_match && *ptr == ':'; |
2926 | ptr++; |
2927 | } |
2928 | |
2929 | if(host_match) { |
2930 | if(*ptr == ':') { |
2931 | /* an empty port always matches */ |
2932 | port_match = TRUE; |
2933 | ptr++; |
2934 | } |
2935 | else { |
2936 | /* check whether the URL's port matches */ |
2937 | char *ptr_next = strchr(ptr, ':'); |
2938 | if(ptr_next) { |
2939 | char *endp = NULL; |
2940 | long port_to_match = strtol(ptr, &endp, 10); |
2941 | if((endp == ptr_next) && (port_to_match == conn->remote_port)) { |
2942 | port_match = TRUE; |
2943 | ptr = ptr_next + 1; |
2944 | } |
2945 | } |
2946 | } |
2947 | } |
2948 | |
2949 | if(host_match && port_match) { |
2950 | /* parse the hostname and port to connect to */ |
2951 | result = parse_connect_to_host_port(data, ptr, host_result, port_result); |
2952 | } |
2953 | |
2954 | return result; |
2955 | } |
2956 | |
2957 | /* |
2958 | * Processes all strings in the "connect to" slist, and uses the "connect |
2959 | * to host" and "connect to port" of the first string that matches. |
2960 | */ |
2961 | static CURLcode parse_connect_to_slist(struct Curl_easy *data, |
2962 | struct connectdata *conn, |
2963 | struct curl_slist *conn_to_host) |
2964 | { |
2965 | CURLcode result = CURLE_OK; |
2966 | char *host = NULL; |
2967 | int port = -1; |
2968 | |
2969 | while(conn_to_host && !host && port == -1) { |
2970 | result = parse_connect_to_string(data, conn, conn_to_host->data, |
2971 | &host, &port); |
2972 | if(result) |
2973 | return result; |
2974 | |
2975 | if(host && *host) { |
2976 | conn->conn_to_host.rawalloc = host; |
2977 | conn->conn_to_host.name = host; |
2978 | conn->bits.conn_to_host = TRUE; |
2979 | |
2980 | infof(data, "Connecting to hostname: %s\n" , host); |
2981 | } |
2982 | else { |
2983 | /* no "connect to host" */ |
2984 | conn->bits.conn_to_host = FALSE; |
2985 | Curl_safefree(host); |
2986 | } |
2987 | |
2988 | if(port >= 0) { |
2989 | conn->conn_to_port = port; |
2990 | conn->bits.conn_to_port = TRUE; |
2991 | infof(data, "Connecting to port: %d\n" , port); |
2992 | } |
2993 | else { |
2994 | /* no "connect to port" */ |
2995 | conn->bits.conn_to_port = FALSE; |
2996 | port = -1; |
2997 | } |
2998 | |
2999 | conn_to_host = conn_to_host->next; |
3000 | } |
3001 | |
3002 | #ifdef USE_ALTSVC |
3003 | if(data->asi && !host && (port == -1) && |
3004 | (conn->handler->protocol == CURLPROTO_HTTPS)) { |
3005 | /* no connect_to match, try alt-svc! */ |
3006 | enum alpnid srcalpnid; |
3007 | bool hit; |
3008 | struct altsvc *as; |
3009 | const int allowed_versions = ( ALPN_h1 |
3010 | #ifdef USE_NGHTTP2 |
3011 | | ALPN_h2 |
3012 | #endif |
3013 | #ifdef ENABLE_QUIC |
3014 | | ALPN_h3 |
3015 | #endif |
3016 | ) & data->asi->flags; |
3017 | |
3018 | host = conn->host.rawalloc; |
3019 | #ifdef USE_NGHTTP2 |
3020 | /* with h2 support, check that first */ |
3021 | srcalpnid = ALPN_h2; |
3022 | hit = Curl_altsvc_lookup(data->asi, |
3023 | srcalpnid, host, conn->remote_port, /* from */ |
3024 | &as /* to */, |
3025 | allowed_versions); |
3026 | if(!hit) |
3027 | #endif |
3028 | { |
3029 | srcalpnid = ALPN_h1; |
3030 | hit = Curl_altsvc_lookup(data->asi, |
3031 | srcalpnid, host, conn->remote_port, /* from */ |
3032 | &as /* to */, |
3033 | allowed_versions); |
3034 | } |
3035 | if(hit) { |
3036 | char *hostd = strdup((char *)as->dst.host); |
3037 | if(!hostd) |
3038 | return CURLE_OUT_OF_MEMORY; |
3039 | conn->conn_to_host.rawalloc = hostd; |
3040 | conn->conn_to_host.name = hostd; |
3041 | conn->bits.conn_to_host = TRUE; |
3042 | conn->conn_to_port = as->dst.port; |
3043 | conn->bits.conn_to_port = TRUE; |
3044 | conn->bits.altused = TRUE; |
3045 | infof(data, "Alt-svc connecting from [%s]%s:%d to [%s]%s:%d\n" , |
3046 | Curl_alpnid2str(srcalpnid), host, conn->remote_port, |
3047 | Curl_alpnid2str(as->dst.alpnid), hostd, as->dst.port); |
3048 | if(srcalpnid != as->dst.alpnid) { |
3049 | /* protocol version switch */ |
3050 | switch(as->dst.alpnid) { |
3051 | case ALPN_h1: |
3052 | conn->httpversion = 11; |
3053 | break; |
3054 | case ALPN_h2: |
3055 | conn->httpversion = 20; |
3056 | break; |
3057 | case ALPN_h3: |
3058 | conn->transport = TRNSPRT_QUIC; |
3059 | conn->httpversion = 30; |
3060 | break; |
3061 | default: /* shouldn't be possible */ |
3062 | break; |
3063 | } |
3064 | } |
3065 | } |
3066 | } |
3067 | #endif |
3068 | |
3069 | return result; |
3070 | } |
3071 | |
3072 | /************************************************************* |
3073 | * Resolve the address of the server or proxy |
3074 | *************************************************************/ |
3075 | static CURLcode resolve_server(struct Curl_easy *data, |
3076 | struct connectdata *conn, |
3077 | bool *async) |
3078 | { |
3079 | CURLcode result = CURLE_OK; |
3080 | timediff_t timeout_ms = Curl_timeleft(data, NULL, TRUE); |
3081 | |
3082 | DEBUGASSERT(conn); |
3083 | DEBUGASSERT(data); |
3084 | /************************************************************* |
3085 | * Resolve the name of the server or proxy |
3086 | *************************************************************/ |
3087 | if(conn->bits.reuse) |
3088 | /* We're reusing the connection - no need to resolve anything, and |
3089 | idnconvert_hostname() was called already in create_conn() for the re-use |
3090 | case. */ |
3091 | *async = FALSE; |
3092 | |
3093 | else { |
3094 | /* this is a fresh connect */ |
3095 | int rc; |
3096 | struct Curl_dns_entry *hostaddr; |
3097 | |
3098 | #ifdef USE_UNIX_SOCKETS |
3099 | if(conn->unix_domain_socket) { |
3100 | /* Unix domain sockets are local. The host gets ignored, just use the |
3101 | * specified domain socket address. Do not cache "DNS entries". There is |
3102 | * no DNS involved and we already have the filesystem path available */ |
3103 | const char *path = conn->unix_domain_socket; |
3104 | |
3105 | hostaddr = calloc(1, sizeof(struct Curl_dns_entry)); |
3106 | if(!hostaddr) |
3107 | result = CURLE_OUT_OF_MEMORY; |
3108 | else { |
3109 | bool longpath = FALSE; |
3110 | hostaddr->addr = Curl_unix2addr(path, &longpath, |
3111 | conn->abstract_unix_socket); |
3112 | if(hostaddr->addr) |
3113 | hostaddr->inuse++; |
3114 | else { |
3115 | /* Long paths are not supported for now */ |
3116 | if(longpath) { |
3117 | failf(data, "Unix socket path too long: '%s'" , path); |
3118 | result = CURLE_COULDNT_RESOLVE_HOST; |
3119 | } |
3120 | else |
3121 | result = CURLE_OUT_OF_MEMORY; |
3122 | free(hostaddr); |
3123 | hostaddr = NULL; |
3124 | } |
3125 | } |
3126 | } |
3127 | else |
3128 | #endif |
3129 | if(!conn->bits.proxy) { |
3130 | struct hostname *connhost; |
3131 | if(conn->bits.conn_to_host) |
3132 | connhost = &conn->conn_to_host; |
3133 | else |
3134 | connhost = &conn->host; |
3135 | |
3136 | /* If not connecting via a proxy, extract the port from the URL, if it is |
3137 | * there, thus overriding any defaults that might have been set above. */ |
3138 | if(conn->bits.conn_to_port) |
3139 | conn->port = conn->conn_to_port; |
3140 | else |
3141 | conn->port = conn->remote_port; |
3142 | |
3143 | /* Resolve target host right on */ |
3144 | conn->hostname_resolve = strdup(connhost->name); |
3145 | if(!conn->hostname_resolve) |
3146 | return CURLE_OUT_OF_MEMORY; |
3147 | rc = Curl_resolv_timeout(conn, conn->hostname_resolve, (int)conn->port, |
3148 | &hostaddr, timeout_ms); |
3149 | if(rc == CURLRESOLV_PENDING) |
3150 | *async = TRUE; |
3151 | |
3152 | else if(rc == CURLRESOLV_TIMEDOUT) |
3153 | result = CURLE_OPERATION_TIMEDOUT; |
3154 | |
3155 | else if(!hostaddr) { |
3156 | failf(data, "Couldn't resolve host '%s'" , connhost->dispname); |
3157 | result = CURLE_COULDNT_RESOLVE_HOST; |
3158 | /* don't return yet, we need to clean up the timeout first */ |
3159 | } |
3160 | } |
3161 | else { |
3162 | /* This is a proxy that hasn't been resolved yet. */ |
3163 | |
3164 | struct hostname * const host = conn->bits.socksproxy ? |
3165 | &conn->socks_proxy.host : &conn->http_proxy.host; |
3166 | |
3167 | /* resolve proxy */ |
3168 | conn->hostname_resolve = strdup(host->name); |
3169 | if(!conn->hostname_resolve) |
3170 | return CURLE_OUT_OF_MEMORY; |
3171 | rc = Curl_resolv_timeout(conn, conn->hostname_resolve, (int)conn->port, |
3172 | &hostaddr, timeout_ms); |
3173 | |
3174 | if(rc == CURLRESOLV_PENDING) |
3175 | *async = TRUE; |
3176 | |
3177 | else if(rc == CURLRESOLV_TIMEDOUT) |
3178 | result = CURLE_OPERATION_TIMEDOUT; |
3179 | |
3180 | else if(!hostaddr) { |
3181 | failf(data, "Couldn't resolve proxy '%s'" , host->dispname); |
3182 | result = CURLE_COULDNT_RESOLVE_PROXY; |
3183 | /* don't return yet, we need to clean up the timeout first */ |
3184 | } |
3185 | } |
3186 | DEBUGASSERT(conn->dns_entry == NULL); |
3187 | conn->dns_entry = hostaddr; |
3188 | } |
3189 | |
3190 | return result; |
3191 | } |
3192 | |
3193 | /* |
3194 | * Cleanup the connection just allocated before we can move along and use the |
3195 | * previously existing one. All relevant data is copied over and old_conn is |
3196 | * ready for freeing once this function returns. |
3197 | */ |
3198 | static void reuse_conn(struct connectdata *old_conn, |
3199 | struct connectdata *conn) |
3200 | { |
3201 | free_idnconverted_hostname(&old_conn->http_proxy.host); |
3202 | free_idnconverted_hostname(&old_conn->socks_proxy.host); |
3203 | |
3204 | free(old_conn->http_proxy.host.rawalloc); |
3205 | free(old_conn->socks_proxy.host.rawalloc); |
3206 | |
3207 | /* free the SSL config struct from this connection struct as this was |
3208 | allocated in vain and is targeted for destruction */ |
3209 | Curl_free_primary_ssl_config(&old_conn->ssl_config); |
3210 | Curl_free_primary_ssl_config(&old_conn->proxy_ssl_config); |
3211 | |
3212 | conn->data = old_conn->data; |
3213 | |
3214 | /* get the user+password information from the old_conn struct since it may |
3215 | * be new for this request even when we re-use an existing connection */ |
3216 | conn->bits.user_passwd = old_conn->bits.user_passwd; |
3217 | if(conn->bits.user_passwd) { |
3218 | /* use the new user name and password though */ |
3219 | Curl_safefree(conn->user); |
3220 | Curl_safefree(conn->passwd); |
3221 | conn->user = old_conn->user; |
3222 | conn->passwd = old_conn->passwd; |
3223 | old_conn->user = NULL; |
3224 | old_conn->passwd = NULL; |
3225 | } |
3226 | |
3227 | conn->bits.proxy_user_passwd = old_conn->bits.proxy_user_passwd; |
3228 | if(conn->bits.proxy_user_passwd) { |
3229 | /* use the new proxy user name and proxy password though */ |
3230 | Curl_safefree(conn->http_proxy.user); |
3231 | Curl_safefree(conn->socks_proxy.user); |
3232 | Curl_safefree(conn->http_proxy.passwd); |
3233 | Curl_safefree(conn->socks_proxy.passwd); |
3234 | conn->http_proxy.user = old_conn->http_proxy.user; |
3235 | conn->socks_proxy.user = old_conn->socks_proxy.user; |
3236 | conn->http_proxy.passwd = old_conn->http_proxy.passwd; |
3237 | conn->socks_proxy.passwd = old_conn->socks_proxy.passwd; |
3238 | old_conn->http_proxy.user = NULL; |
3239 | old_conn->socks_proxy.user = NULL; |
3240 | old_conn->http_proxy.passwd = NULL; |
3241 | old_conn->socks_proxy.passwd = NULL; |
3242 | } |
3243 | |
3244 | /* host can change, when doing keepalive with a proxy or if the case is |
3245 | different this time etc */ |
3246 | free_idnconverted_hostname(&conn->host); |
3247 | free_idnconverted_hostname(&conn->conn_to_host); |
3248 | Curl_safefree(conn->host.rawalloc); |
3249 | Curl_safefree(conn->conn_to_host.rawalloc); |
3250 | conn->host = old_conn->host; |
3251 | conn->conn_to_host = old_conn->conn_to_host; |
3252 | conn->conn_to_port = old_conn->conn_to_port; |
3253 | conn->remote_port = old_conn->remote_port; |
3254 | Curl_safefree(conn->hostname_resolve); |
3255 | |
3256 | conn->hostname_resolve = old_conn->hostname_resolve; |
3257 | old_conn->hostname_resolve = NULL; |
3258 | |
3259 | /* persist connection info in session handle */ |
3260 | Curl_persistconninfo(conn); |
3261 | |
3262 | conn_reset_all_postponed_data(old_conn); /* free buffers */ |
3263 | |
3264 | /* re-use init */ |
3265 | conn->bits.reuse = TRUE; /* yes, we're re-using here */ |
3266 | |
3267 | Curl_safefree(old_conn->user); |
3268 | Curl_safefree(old_conn->passwd); |
3269 | Curl_safefree(old_conn->options); |
3270 | Curl_safefree(old_conn->http_proxy.user); |
3271 | Curl_safefree(old_conn->socks_proxy.user); |
3272 | Curl_safefree(old_conn->http_proxy.passwd); |
3273 | Curl_safefree(old_conn->socks_proxy.passwd); |
3274 | Curl_safefree(old_conn->localdev); |
3275 | Curl_llist_destroy(&old_conn->easyq, NULL); |
3276 | |
3277 | #ifdef USE_UNIX_SOCKETS |
3278 | Curl_safefree(old_conn->unix_domain_socket); |
3279 | #endif |
3280 | } |
3281 | |
3282 | /** |
3283 | * create_conn() sets up a new connectdata struct, or re-uses an already |
3284 | * existing one, and resolves host name. |
3285 | * |
3286 | * if this function returns CURLE_OK and *async is set to TRUE, the resolve |
3287 | * response will be coming asynchronously. If *async is FALSE, the name is |
3288 | * already resolved. |
3289 | * |
3290 | * @param data The sessionhandle pointer |
3291 | * @param in_connect is set to the next connection data pointer |
3292 | * @param async is set TRUE when an async DNS resolution is pending |
3293 | * @see Curl_setup_conn() |
3294 | * |
3295 | * *NOTE* this function assigns the conn->data pointer! |
3296 | */ |
3297 | |
3298 | static CURLcode create_conn(struct Curl_easy *data, |
3299 | struct connectdata **in_connect, |
3300 | bool *async) |
3301 | { |
3302 | CURLcode result = CURLE_OK; |
3303 | struct connectdata *conn; |
3304 | struct connectdata *conn_temp = NULL; |
3305 | bool reuse; |
3306 | bool connections_available = TRUE; |
3307 | bool force_reuse = FALSE; |
3308 | bool waitpipe = FALSE; |
3309 | size_t max_host_connections = Curl_multi_max_host_connections(data->multi); |
3310 | size_t max_total_connections = Curl_multi_max_total_connections(data->multi); |
3311 | |
3312 | *async = FALSE; |
3313 | *in_connect = NULL; |
3314 | |
3315 | /************************************************************* |
3316 | * Check input data |
3317 | *************************************************************/ |
3318 | if(!data->change.url) { |
3319 | result = CURLE_URL_MALFORMAT; |
3320 | goto out; |
3321 | } |
3322 | |
3323 | /* First, split up the current URL in parts so that we can use the |
3324 | parts for checking against the already present connections. In order |
3325 | to not have to modify everything at once, we allocate a temporary |
3326 | connection data struct and fill in for comparison purposes. */ |
3327 | conn = allocate_conn(data); |
3328 | |
3329 | if(!conn) { |
3330 | result = CURLE_OUT_OF_MEMORY; |
3331 | goto out; |
3332 | } |
3333 | |
3334 | /* We must set the return variable as soon as possible, so that our |
3335 | parent can cleanup any possible allocs we may have done before |
3336 | any failure */ |
3337 | *in_connect = conn; |
3338 | |
3339 | result = parseurlandfillconn(data, conn); |
3340 | if(result) |
3341 | goto out; |
3342 | |
3343 | if(data->set.str[STRING_BEARER]) { |
3344 | conn->oauth_bearer = strdup(data->set.str[STRING_BEARER]); |
3345 | if(!conn->oauth_bearer) { |
3346 | result = CURLE_OUT_OF_MEMORY; |
3347 | goto out; |
3348 | } |
3349 | } |
3350 | |
3351 | if(data->set.str[STRING_SASL_AUTHZID]) { |
3352 | conn->sasl_authzid = strdup(data->set.str[STRING_SASL_AUTHZID]); |
3353 | if(!conn->sasl_authzid) { |
3354 | result = CURLE_OUT_OF_MEMORY; |
3355 | goto out; |
3356 | } |
3357 | } |
3358 | |
3359 | #ifdef USE_UNIX_SOCKETS |
3360 | if(data->set.str[STRING_UNIX_SOCKET_PATH]) { |
3361 | conn->unix_domain_socket = strdup(data->set.str[STRING_UNIX_SOCKET_PATH]); |
3362 | if(conn->unix_domain_socket == NULL) { |
3363 | result = CURLE_OUT_OF_MEMORY; |
3364 | goto out; |
3365 | } |
3366 | conn->abstract_unix_socket = data->set.abstract_unix_socket; |
3367 | } |
3368 | #endif |
3369 | |
3370 | /* After the unix socket init but before the proxy vars are used, parse and |
3371 | initialize the proxy vars */ |
3372 | #ifndef CURL_DISABLE_PROXY |
3373 | result = create_conn_helper_init_proxy(conn); |
3374 | if(result) |
3375 | goto out; |
3376 | #endif |
3377 | |
3378 | /************************************************************* |
3379 | * If the protocol is using SSL and HTTP proxy is used, we set |
3380 | * the tunnel_proxy bit. |
3381 | *************************************************************/ |
3382 | if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy) |
3383 | conn->bits.tunnel_proxy = TRUE; |
3384 | |
3385 | /************************************************************* |
3386 | * Figure out the remote port number and fix it in the URL |
3387 | *************************************************************/ |
3388 | result = parse_remote_port(data, conn); |
3389 | if(result) |
3390 | goto out; |
3391 | |
3392 | /* Check for overridden login details and set them accordingly so they |
3393 | they are known when protocol->setup_connection is called! */ |
3394 | result = override_login(data, conn, &conn->user, &conn->passwd, |
3395 | &conn->options); |
3396 | if(result) |
3397 | goto out; |
3398 | |
3399 | result = set_login(conn); /* default credentials */ |
3400 | if(result) |
3401 | goto out; |
3402 | |
3403 | /************************************************************* |
3404 | * Process the "connect to" linked list of hostname/port mappings. |
3405 | * Do this after the remote port number has been fixed in the URL. |
3406 | *************************************************************/ |
3407 | result = parse_connect_to_slist(data, conn, data->set.connect_to); |
3408 | if(result) |
3409 | goto out; |
3410 | |
3411 | /************************************************************* |
3412 | * IDN-convert the hostnames |
3413 | *************************************************************/ |
3414 | result = idnconvert_hostname(conn, &conn->host); |
3415 | if(result) |
3416 | goto out; |
3417 | if(conn->bits.conn_to_host) { |
3418 | result = idnconvert_hostname(conn, &conn->conn_to_host); |
3419 | if(result) |
3420 | goto out; |
3421 | } |
3422 | if(conn->bits.httpproxy) { |
3423 | result = idnconvert_hostname(conn, &conn->http_proxy.host); |
3424 | if(result) |
3425 | goto out; |
3426 | } |
3427 | if(conn->bits.socksproxy) { |
3428 | result = idnconvert_hostname(conn, &conn->socks_proxy.host); |
3429 | if(result) |
3430 | goto out; |
3431 | } |
3432 | |
3433 | /************************************************************* |
3434 | * Check whether the host and the "connect to host" are equal. |
3435 | * Do this after the hostnames have been IDN-converted. |
3436 | *************************************************************/ |
3437 | if(conn->bits.conn_to_host && |
3438 | strcasecompare(conn->conn_to_host.name, conn->host.name)) { |
3439 | conn->bits.conn_to_host = FALSE; |
3440 | } |
3441 | |
3442 | /************************************************************* |
3443 | * Check whether the port and the "connect to port" are equal. |
3444 | * Do this after the remote port number has been fixed in the URL. |
3445 | *************************************************************/ |
3446 | if(conn->bits.conn_to_port && conn->conn_to_port == conn->remote_port) { |
3447 | conn->bits.conn_to_port = FALSE; |
3448 | } |
3449 | |
3450 | /************************************************************* |
3451 | * If the "connect to" feature is used with an HTTP proxy, |
3452 | * we set the tunnel_proxy bit. |
3453 | *************************************************************/ |
3454 | if((conn->bits.conn_to_host || conn->bits.conn_to_port) && |
3455 | conn->bits.httpproxy) |
3456 | conn->bits.tunnel_proxy = TRUE; |
3457 | |
3458 | /************************************************************* |
3459 | * Setup internals depending on protocol. Needs to be done after |
3460 | * we figured out what/if proxy to use. |
3461 | *************************************************************/ |
3462 | result = setup_connection_internals(conn); |
3463 | if(result) |
3464 | goto out; |
3465 | |
3466 | conn->recv[FIRSTSOCKET] = Curl_recv_plain; |
3467 | conn->send[FIRSTSOCKET] = Curl_send_plain; |
3468 | conn->recv[SECONDARYSOCKET] = Curl_recv_plain; |
3469 | conn->send[SECONDARYSOCKET] = Curl_send_plain; |
3470 | |
3471 | conn->bits.tcp_fastopen = data->set.tcp_fastopen; |
3472 | |
3473 | /*********************************************************************** |
3474 | * file: is a special case in that it doesn't need a network connection |
3475 | ***********************************************************************/ |
3476 | #ifndef CURL_DISABLE_FILE |
3477 | if(conn->handler->flags & PROTOPT_NONETWORK) { |
3478 | bool done; |
3479 | /* this is supposed to be the connect function so we better at least check |
3480 | that the file is present here! */ |
3481 | DEBUGASSERT(conn->handler->connect_it); |
3482 | Curl_persistconninfo(conn); |
3483 | result = conn->handler->connect_it(conn, &done); |
3484 | |
3485 | /* Setup a "faked" transfer that'll do nothing */ |
3486 | if(!result) { |
3487 | conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */ |
3488 | |
3489 | result = Curl_conncache_add_conn(data->state.conn_cache, conn); |
3490 | if(result) |
3491 | goto out; |
3492 | |
3493 | /* |
3494 | * Setup whatever necessary for a resumed transfer |
3495 | */ |
3496 | result = setup_range(data); |
3497 | if(result) { |
3498 | DEBUGASSERT(conn->handler->done); |
3499 | /* we ignore the return code for the protocol-specific DONE */ |
3500 | (void)conn->handler->done(conn, result, FALSE); |
3501 | goto out; |
3502 | } |
3503 | Curl_attach_connnection(data, conn); |
3504 | Curl_setup_transfer(data, -1, -1, FALSE, -1); |
3505 | } |
3506 | |
3507 | /* since we skip do_init() */ |
3508 | Curl_init_do(data, conn); |
3509 | |
3510 | goto out; |
3511 | } |
3512 | #endif |
3513 | |
3514 | /* Get a cloned copy of the SSL config situation stored in the |
3515 | connection struct. But to get this going nicely, we must first make |
3516 | sure that the strings in the master copy are pointing to the correct |
3517 | strings in the session handle strings array! |
3518 | |
3519 | Keep in mind that the pointers in the master copy are pointing to strings |
3520 | that will be freed as part of the Curl_easy struct, but all cloned |
3521 | copies will be separately allocated. |
3522 | */ |
3523 | data->set.ssl.primary.CApath = data->set.str[STRING_SSL_CAPATH_ORIG]; |
3524 | data->set.proxy_ssl.primary.CApath = data->set.str[STRING_SSL_CAPATH_PROXY]; |
3525 | data->set.ssl.primary.CAfile = data->set.str[STRING_SSL_CAFILE_ORIG]; |
3526 | data->set.proxy_ssl.primary.CAfile = data->set.str[STRING_SSL_CAFILE_PROXY]; |
3527 | data->set.ssl.primary.random_file = data->set.str[STRING_SSL_RANDOM_FILE]; |
3528 | data->set.proxy_ssl.primary.random_file = |
3529 | data->set.str[STRING_SSL_RANDOM_FILE]; |
3530 | data->set.ssl.primary.egdsocket = data->set.str[STRING_SSL_EGDSOCKET]; |
3531 | data->set.proxy_ssl.primary.egdsocket = data->set.str[STRING_SSL_EGDSOCKET]; |
3532 | data->set.ssl.primary.cipher_list = |
3533 | data->set.str[STRING_SSL_CIPHER_LIST_ORIG]; |
3534 | data->set.proxy_ssl.primary.cipher_list = |
3535 | data->set.str[STRING_SSL_CIPHER_LIST_PROXY]; |
3536 | data->set.ssl.primary.cipher_list13 = |
3537 | data->set.str[STRING_SSL_CIPHER13_LIST_ORIG]; |
3538 | data->set.proxy_ssl.primary.cipher_list13 = |
3539 | data->set.str[STRING_SSL_CIPHER13_LIST_PROXY]; |
3540 | data->set.ssl.primary.pinned_key = |
3541 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]; |
3542 | data->set.proxy_ssl.primary.pinned_key = |
3543 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY]; |
3544 | |
3545 | data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE_ORIG]; |
3546 | data->set.proxy_ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE_PROXY]; |
3547 | data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT_ORIG]; |
3548 | data->set.proxy_ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT_PROXY]; |
3549 | data->set.ssl.cert = data->set.str[STRING_CERT_ORIG]; |
3550 | data->set.proxy_ssl.cert = data->set.str[STRING_CERT_PROXY]; |
3551 | data->set.ssl.cert_type = data->set.str[STRING_CERT_TYPE_ORIG]; |
3552 | data->set.proxy_ssl.cert_type = data->set.str[STRING_CERT_TYPE_PROXY]; |
3553 | data->set.ssl.key = data->set.str[STRING_KEY_ORIG]; |
3554 | data->set.proxy_ssl.key = data->set.str[STRING_KEY_PROXY]; |
3555 | data->set.ssl.key_type = data->set.str[STRING_KEY_TYPE_ORIG]; |
3556 | data->set.proxy_ssl.key_type = data->set.str[STRING_KEY_TYPE_PROXY]; |
3557 | data->set.ssl.key_passwd = data->set.str[STRING_KEY_PASSWD_ORIG]; |
3558 | data->set.proxy_ssl.key_passwd = data->set.str[STRING_KEY_PASSWD_PROXY]; |
3559 | data->set.ssl.primary.clientcert = data->set.str[STRING_CERT_ORIG]; |
3560 | data->set.proxy_ssl.primary.clientcert = data->set.str[STRING_CERT_PROXY]; |
3561 | #ifdef USE_TLS_SRP |
3562 | data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME_ORIG]; |
3563 | data->set.proxy_ssl.username = data->set.str[STRING_TLSAUTH_USERNAME_PROXY]; |
3564 | data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD_ORIG]; |
3565 | data->set.proxy_ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD_PROXY]; |
3566 | #endif |
3567 | |
3568 | if(!Curl_clone_primary_ssl_config(&data->set.ssl.primary, |
3569 | &conn->ssl_config)) { |
3570 | result = CURLE_OUT_OF_MEMORY; |
3571 | goto out; |
3572 | } |
3573 | |
3574 | if(!Curl_clone_primary_ssl_config(&data->set.proxy_ssl.primary, |
3575 | &conn->proxy_ssl_config)) { |
3576 | result = CURLE_OUT_OF_MEMORY; |
3577 | goto out; |
3578 | } |
3579 | |
3580 | prune_dead_connections(data); |
3581 | |
3582 | /************************************************************* |
3583 | * Check the current list of connections to see if we can |
3584 | * re-use an already existing one or if we have to create a |
3585 | * new one. |
3586 | *************************************************************/ |
3587 | |
3588 | DEBUGASSERT(conn->user); |
3589 | DEBUGASSERT(conn->passwd); |
3590 | |
3591 | /* reuse_fresh is TRUE if we are told to use a new connection by force, but |
3592 | we only acknowledge this option if this is not a re-used connection |
3593 | already (which happens due to follow-location or during a HTTP |
3594 | authentication phase). CONNECT_ONLY transfers also refuse reuse. */ |
3595 | if((data->set.reuse_fresh && !data->state.this_is_a_follow) || |
3596 | data->set.connect_only) |
3597 | reuse = FALSE; |
3598 | else |
3599 | reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse, &waitpipe); |
3600 | |
3601 | /* If we found a reusable connection that is now marked as in use, we may |
3602 | still want to open a new connection if we are multiplexing. */ |
3603 | if(reuse && !force_reuse && IsMultiplexingPossible(data, conn_temp)) { |
3604 | size_t multiplexed = CONN_INUSE(conn_temp); |
3605 | if(multiplexed > 0) { |
3606 | infof(data, "Found connection %ld, with %zu requests on it\n" , |
3607 | conn_temp->connection_id, multiplexed); |
3608 | |
3609 | if(Curl_conncache_bundle_size(conn_temp) < max_host_connections && |
3610 | Curl_conncache_size(data) < max_total_connections) { |
3611 | /* We want a new connection anyway */ |
3612 | reuse = FALSE; |
3613 | |
3614 | infof(data, "We can reuse, but we want a new connection anyway\n" ); |
3615 | Curl_conncache_return_conn(conn_temp); |
3616 | } |
3617 | } |
3618 | } |
3619 | |
3620 | if(reuse) { |
3621 | /* |
3622 | * We already have a connection for this, we got the former connection |
3623 | * in the conn_temp variable and thus we need to cleanup the one we |
3624 | * just allocated before we can move along and use the previously |
3625 | * existing one. |
3626 | */ |
3627 | reuse_conn(conn, conn_temp); |
3628 | #ifdef USE_SSL |
3629 | free(conn->ssl_extra); |
3630 | #endif |
3631 | free(conn); /* we don't need this anymore */ |
3632 | conn = conn_temp; |
3633 | *in_connect = conn; |
3634 | |
3635 | infof(data, "Re-using existing connection! (#%ld) with %s %s\n" , |
3636 | conn->connection_id, |
3637 | conn->bits.proxy?"proxy" :"host" , |
3638 | conn->socks_proxy.host.name ? conn->socks_proxy.host.dispname : |
3639 | conn->http_proxy.host.name ? conn->http_proxy.host.dispname : |
3640 | conn->host.dispname); |
3641 | } |
3642 | else { |
3643 | /* We have decided that we want a new connection. However, we may not |
3644 | be able to do that if we have reached the limit of how many |
3645 | connections we are allowed to open. */ |
3646 | |
3647 | if(conn->handler->flags & PROTOPT_ALPN_NPN) { |
3648 | /* The protocol wants it, so set the bits if enabled in the easy handle |
3649 | (default) */ |
3650 | if(data->set.ssl_enable_alpn) |
3651 | conn->bits.tls_enable_alpn = TRUE; |
3652 | if(data->set.ssl_enable_npn) |
3653 | conn->bits.tls_enable_npn = TRUE; |
3654 | } |
3655 | |
3656 | if(waitpipe) |
3657 | /* There is a connection that *might* become usable for multiplexing |
3658 | "soon", and we wait for that */ |
3659 | connections_available = FALSE; |
3660 | else { |
3661 | /* this gets a lock on the conncache */ |
3662 | const char *bundlehost; |
3663 | struct connectbundle *bundle = |
3664 | Curl_conncache_find_bundle(conn, data->state.conn_cache, &bundlehost); |
3665 | |
3666 | if(max_host_connections > 0 && bundle && |
3667 | (bundle->num_connections >= max_host_connections)) { |
3668 | struct connectdata *conn_candidate; |
3669 | |
3670 | /* The bundle is full. Extract the oldest connection. */ |
3671 | conn_candidate = Curl_conncache_extract_bundle(data, bundle); |
3672 | Curl_conncache_unlock(data); |
3673 | |
3674 | if(conn_candidate) |
3675 | (void)Curl_disconnect(data, conn_candidate, |
3676 | /* dead_connection */ FALSE); |
3677 | else { |
3678 | infof(data, "No more connections allowed to host %s: %zu\n" , |
3679 | bundlehost, max_host_connections); |
3680 | connections_available = FALSE; |
3681 | } |
3682 | } |
3683 | else |
3684 | Curl_conncache_unlock(data); |
3685 | |
3686 | } |
3687 | |
3688 | if(connections_available && |
3689 | (max_total_connections > 0) && |
3690 | (Curl_conncache_size(data) >= max_total_connections)) { |
3691 | struct connectdata *conn_candidate; |
3692 | |
3693 | /* The cache is full. Let's see if we can kill a connection. */ |
3694 | conn_candidate = Curl_conncache_extract_oldest(data); |
3695 | if(conn_candidate) |
3696 | (void)Curl_disconnect(data, conn_candidate, |
3697 | /* dead_connection */ FALSE); |
3698 | else { |
3699 | infof(data, "No connections available in cache\n" ); |
3700 | connections_available = FALSE; |
3701 | } |
3702 | } |
3703 | |
3704 | if(!connections_available) { |
3705 | infof(data, "No connections available.\n" ); |
3706 | |
3707 | conn_free(conn); |
3708 | *in_connect = NULL; |
3709 | |
3710 | result = CURLE_NO_CONNECTION_AVAILABLE; |
3711 | goto out; |
3712 | } |
3713 | else { |
3714 | /* |
3715 | * This is a brand new connection, so let's store it in the connection |
3716 | * cache of ours! |
3717 | */ |
3718 | result = Curl_conncache_add_conn(data->state.conn_cache, conn); |
3719 | if(result) |
3720 | goto out; |
3721 | } |
3722 | |
3723 | #if defined(USE_NTLM) |
3724 | /* If NTLM is requested in a part of this connection, make sure we don't |
3725 | assume the state is fine as this is a fresh connection and NTLM is |
3726 | connection based. */ |
3727 | if((data->state.authhost.picked & (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) && |
3728 | data->state.authhost.done) { |
3729 | infof(data, "NTLM picked AND auth done set, clear picked!\n" ); |
3730 | data->state.authhost.picked = CURLAUTH_NONE; |
3731 | data->state.authhost.done = FALSE; |
3732 | } |
3733 | |
3734 | if((data->state.authproxy.picked & (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) && |
3735 | data->state.authproxy.done) { |
3736 | infof(data, "NTLM-proxy picked AND auth done set, clear picked!\n" ); |
3737 | data->state.authproxy.picked = CURLAUTH_NONE; |
3738 | data->state.authproxy.done = FALSE; |
3739 | } |
3740 | #endif |
3741 | } |
3742 | |
3743 | /* Setup and init stuff before DO starts, in preparing for the transfer. */ |
3744 | Curl_init_do(data, conn); |
3745 | |
3746 | /* |
3747 | * Setup whatever necessary for a resumed transfer |
3748 | */ |
3749 | result = setup_range(data); |
3750 | if(result) |
3751 | goto out; |
3752 | |
3753 | /* Continue connectdata initialization here. */ |
3754 | |
3755 | /* |
3756 | * Inherit the proper values from the urldata struct AFTER we have arranged |
3757 | * the persistent connection stuff |
3758 | */ |
3759 | conn->seek_func = data->set.seek_func; |
3760 | conn->seek_client = data->set.seek_client; |
3761 | |
3762 | /************************************************************* |
3763 | * Resolve the address of the server or proxy |
3764 | *************************************************************/ |
3765 | result = resolve_server(data, conn, async); |
3766 | |
3767 | /* Strip trailing dots. resolve_server copied the name. */ |
3768 | strip_trailing_dot(&conn->host); |
3769 | if(conn->bits.httpproxy) |
3770 | strip_trailing_dot(&conn->http_proxy.host); |
3771 | if(conn->bits.socksproxy) |
3772 | strip_trailing_dot(&conn->socks_proxy.host); |
3773 | if(conn->bits.conn_to_host) |
3774 | strip_trailing_dot(&conn->conn_to_host); |
3775 | |
3776 | out: |
3777 | return result; |
3778 | } |
3779 | |
3780 | /* Curl_setup_conn() is called after the name resolve initiated in |
3781 | * create_conn() is all done. |
3782 | * |
3783 | * Curl_setup_conn() also handles reused connections |
3784 | * |
3785 | * conn->data MUST already have been setup fine (in create_conn) |
3786 | */ |
3787 | |
3788 | CURLcode Curl_setup_conn(struct connectdata *conn, |
3789 | bool *protocol_done) |
3790 | { |
3791 | CURLcode result = CURLE_OK; |
3792 | struct Curl_easy *data = conn->data; |
3793 | |
3794 | Curl_pgrsTime(data, TIMER_NAMELOOKUP); |
3795 | |
3796 | if(conn->handler->flags & PROTOPT_NONETWORK) { |
3797 | /* nothing to setup when not using a network */ |
3798 | *protocol_done = TRUE; |
3799 | return result; |
3800 | } |
3801 | *protocol_done = FALSE; /* default to not done */ |
3802 | |
3803 | /* set proxy_connect_closed to false unconditionally already here since it |
3804 | is used strictly to provide extra information to a parent function in the |
3805 | case of proxy CONNECT failures and we must make sure we don't have it |
3806 | lingering set from a previous invoke */ |
3807 | conn->bits.proxy_connect_closed = FALSE; |
3808 | |
3809 | /* |
3810 | * Set user-agent. Used for HTTP, but since we can attempt to tunnel |
3811 | * basically anything through a http proxy we can't limit this based on |
3812 | * protocol. |
3813 | */ |
3814 | if(data->set.str[STRING_USERAGENT]) { |
3815 | Curl_safefree(conn->allocptr.uagent); |
3816 | conn->allocptr.uagent = |
3817 | aprintf("User-Agent: %s\r\n" , data->set.str[STRING_USERAGENT]); |
3818 | if(!conn->allocptr.uagent) |
3819 | return CURLE_OUT_OF_MEMORY; |
3820 | } |
3821 | |
3822 | data->req.headerbytecount = 0; |
3823 | |
3824 | #ifdef CURL_DO_LINEEND_CONV |
3825 | data->state.crlf_conversions = 0; /* reset CRLF conversion counter */ |
3826 | #endif /* CURL_DO_LINEEND_CONV */ |
3827 | |
3828 | /* set start time here for timeout purposes in the connect procedure, it |
3829 | is later set again for the progress meter purpose */ |
3830 | conn->now = Curl_now(); |
3831 | |
3832 | if(CURL_SOCKET_BAD == conn->sock[FIRSTSOCKET]) { |
3833 | conn->bits.tcpconnect[FIRSTSOCKET] = FALSE; |
3834 | result = Curl_connecthost(conn, conn->dns_entry); |
3835 | if(result) |
3836 | return result; |
3837 | } |
3838 | else { |
3839 | Curl_pgrsTime(data, TIMER_CONNECT); /* we're connected already */ |
3840 | if(conn->ssl[FIRSTSOCKET].use || |
3841 | (conn->handler->protocol & PROTO_FAMILY_SSH)) |
3842 | Curl_pgrsTime(data, TIMER_APPCONNECT); /* we're connected already */ |
3843 | conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; |
3844 | *protocol_done = TRUE; |
3845 | Curl_updateconninfo(conn, conn->sock[FIRSTSOCKET]); |
3846 | Curl_verboseconnect(conn); |
3847 | } |
3848 | |
3849 | conn->now = Curl_now(); /* time this *after* the connect is done, we set |
3850 | this here perhaps a second time */ |
3851 | return result; |
3852 | } |
3853 | |
3854 | CURLcode Curl_connect(struct Curl_easy *data, |
3855 | bool *asyncp, |
3856 | bool *protocol_done) |
3857 | { |
3858 | CURLcode result; |
3859 | struct connectdata *conn; |
3860 | |
3861 | *asyncp = FALSE; /* assume synchronous resolves by default */ |
3862 | |
3863 | /* init the single-transfer specific data */ |
3864 | Curl_free_request_state(data); |
3865 | memset(&data->req, 0, sizeof(struct SingleRequest)); |
3866 | data->req.maxdownload = -1; |
3867 | |
3868 | /* call the stuff that needs to be called */ |
3869 | result = create_conn(data, &conn, asyncp); |
3870 | |
3871 | if(!result) { |
3872 | if(CONN_INUSE(conn)) |
3873 | /* multiplexed */ |
3874 | *protocol_done = TRUE; |
3875 | else if(!*asyncp) { |
3876 | /* DNS resolution is done: that's either because this is a reused |
3877 | connection, in which case DNS was unnecessary, or because DNS |
3878 | really did finish already (synch resolver/fast async resolve) */ |
3879 | result = Curl_setup_conn(conn, protocol_done); |
3880 | } |
3881 | } |
3882 | |
3883 | if(result == CURLE_NO_CONNECTION_AVAILABLE) { |
3884 | return result; |
3885 | } |
3886 | else if(result && conn) { |
3887 | /* We're not allowed to return failure with memory left allocated in the |
3888 | connectdata struct, free those here */ |
3889 | Curl_disconnect(data, conn, TRUE); |
3890 | } |
3891 | else if(!result && !data->conn) |
3892 | /* FILE: transfers already have the connection attached */ |
3893 | Curl_attach_connnection(data, conn); |
3894 | |
3895 | return result; |
3896 | } |
3897 | |
3898 | /* |
3899 | * Curl_init_do() inits the readwrite session. This is inited each time (in |
3900 | * the DO function before the protocol-specific DO functions are invoked) for |
3901 | * a transfer, sometimes multiple times on the same Curl_easy. Make sure |
3902 | * nothing in here depends on stuff that are setup dynamically for the |
3903 | * transfer. |
3904 | * |
3905 | * Allow this function to get called with 'conn' set to NULL. |
3906 | */ |
3907 | |
3908 | CURLcode Curl_init_do(struct Curl_easy *data, struct connectdata *conn) |
3909 | { |
3910 | struct SingleRequest *k = &data->req; |
3911 | |
3912 | if(conn) { |
3913 | conn->bits.do_more = FALSE; /* by default there's no curl_do_more() to |
3914 | use */ |
3915 | /* if the protocol used doesn't support wildcards, switch it off */ |
3916 | if(data->state.wildcardmatch && |
3917 | !(conn->handler->flags & PROTOPT_WILDCARD)) |
3918 | data->state.wildcardmatch = FALSE; |
3919 | } |
3920 | |
3921 | data->state.done = FALSE; /* *_done() is not called yet */ |
3922 | data->state.expect100header = FALSE; |
3923 | |
3924 | |
3925 | if(data->set.opt_no_body) |
3926 | /* in HTTP lingo, no body means using the HEAD request... */ |
3927 | data->set.httpreq = HTTPREQ_HEAD; |
3928 | else if(HTTPREQ_HEAD == data->set.httpreq) |
3929 | /* ... but if unset there really is no perfect method that is the |
3930 | "opposite" of HEAD but in reality most people probably think GET |
3931 | then. The important thing is that we can't let it remain HEAD if the |
3932 | opt_no_body is set FALSE since then we'll behave wrong when getting |
3933 | HTTP. */ |
3934 | data->set.httpreq = HTTPREQ_GET; |
3935 | |
3936 | k->start = Curl_now(); /* start time */ |
3937 | k->now = k->start; /* current time is now */ |
3938 | k->header = TRUE; /* assume header */ |
3939 | |
3940 | k->bytecount = 0; |
3941 | |
3942 | k->buf = data->state.buffer; |
3943 | k->hbufp = data->state.headerbuff; |
3944 | k->ignorebody = FALSE; |
3945 | |
3946 | Curl_speedinit(data); |
3947 | |
3948 | Curl_pgrsSetUploadCounter(data, 0); |
3949 | Curl_pgrsSetDownloadCounter(data, 0); |
3950 | |
3951 | return CURLE_OK; |
3952 | } |
3953 | |
3954 | /* |
3955 | * get_protocol_family() |
3956 | * |
3957 | * This is used to return the protocol family for a given protocol. |
3958 | * |
3959 | * Parameters: |
3960 | * |
3961 | * protocol [in] - A single bit protocol identifier such as HTTP or HTTPS. |
3962 | * |
3963 | * Returns the family as a single bit protocol identifier. |
3964 | */ |
3965 | |
3966 | static unsigned int get_protocol_family(unsigned int protocol) |
3967 | { |
3968 | unsigned int family; |
3969 | |
3970 | switch(protocol) { |
3971 | case CURLPROTO_HTTP: |
3972 | case CURLPROTO_HTTPS: |
3973 | family = CURLPROTO_HTTP; |
3974 | break; |
3975 | |
3976 | case CURLPROTO_FTP: |
3977 | case CURLPROTO_FTPS: |
3978 | family = CURLPROTO_FTP; |
3979 | break; |
3980 | |
3981 | case CURLPROTO_SCP: |
3982 | family = CURLPROTO_SCP; |
3983 | break; |
3984 | |
3985 | case CURLPROTO_SFTP: |
3986 | family = CURLPROTO_SFTP; |
3987 | break; |
3988 | |
3989 | case CURLPROTO_TELNET: |
3990 | family = CURLPROTO_TELNET; |
3991 | break; |
3992 | |
3993 | case CURLPROTO_LDAP: |
3994 | case CURLPROTO_LDAPS: |
3995 | family = CURLPROTO_LDAP; |
3996 | break; |
3997 | |
3998 | case CURLPROTO_DICT: |
3999 | family = CURLPROTO_DICT; |
4000 | break; |
4001 | |
4002 | case CURLPROTO_FILE: |
4003 | family = CURLPROTO_FILE; |
4004 | break; |
4005 | |
4006 | case CURLPROTO_TFTP: |
4007 | family = CURLPROTO_TFTP; |
4008 | break; |
4009 | |
4010 | case CURLPROTO_IMAP: |
4011 | case CURLPROTO_IMAPS: |
4012 | family = CURLPROTO_IMAP; |
4013 | break; |
4014 | |
4015 | case CURLPROTO_POP3: |
4016 | case CURLPROTO_POP3S: |
4017 | family = CURLPROTO_POP3; |
4018 | break; |
4019 | |
4020 | case CURLPROTO_SMTP: |
4021 | case CURLPROTO_SMTPS: |
4022 | family = CURLPROTO_SMTP; |
4023 | break; |
4024 | |
4025 | case CURLPROTO_RTSP: |
4026 | family = CURLPROTO_RTSP; |
4027 | break; |
4028 | |
4029 | case CURLPROTO_RTMP: |
4030 | case CURLPROTO_RTMPS: |
4031 | family = CURLPROTO_RTMP; |
4032 | break; |
4033 | |
4034 | case CURLPROTO_RTMPT: |
4035 | case CURLPROTO_RTMPTS: |
4036 | family = CURLPROTO_RTMPT; |
4037 | break; |
4038 | |
4039 | case CURLPROTO_RTMPE: |
4040 | family = CURLPROTO_RTMPE; |
4041 | break; |
4042 | |
4043 | case CURLPROTO_RTMPTE: |
4044 | family = CURLPROTO_RTMPTE; |
4045 | break; |
4046 | |
4047 | case CURLPROTO_GOPHER: |
4048 | family = CURLPROTO_GOPHER; |
4049 | break; |
4050 | |
4051 | case CURLPROTO_SMB: |
4052 | case CURLPROTO_SMBS: |
4053 | family = CURLPROTO_SMB; |
4054 | break; |
4055 | |
4056 | default: |
4057 | family = 0; |
4058 | break; |
4059 | } |
4060 | |
4061 | return family; |
4062 | } |
4063 | |