3 /*****************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 2000, Daniel Stenberg, <daniel@haxx.se>, et al.
12 * In order to be useful for every potential user, curl and libcurl are
13 * dual-licensed under the MPL and the MIT/X-derivate licenses.
15 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
16 * copies of the Software, and permit persons to whom the Software is
17 * furnished to do so, under the terms of the MPL or the MIT/X-derivate
18 * licenses. You may pick one of these licenses.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
24 *****************************************************************************/
26 /* This file is for lib internal stuff */
30 #ifndef MAXHOSTNAMELEN
31 #define MAXHOSTNAMELEN 256
35 #define PORT_TELNET 23
36 #define PORT_GOPHER 70
38 #define PORT_HTTPS 443
39 #define PORT_DICT 2628
42 #define DICT_MATCH "/MATCH:"
43 #define DICT_MATCH2 "/M:"
44 #define DICT_MATCH3 "/FIND:"
45 #define DICT_DEFINE "/DEFINE:"
46 #define DICT_DEFINE2 "/D:"
47 #define DICT_DEFINE3 "/LOOKUP:"
49 #define CURL_DEFAULT_USER "anonymous"
50 #define CURL_DEFAULT_PASSWORD "curl_by_daniel@haxx.se"
56 /* SSLeay stuff usually in /usr/local/ssl/include */
58 #include "openssl/rsa.h"
59 #include "openssl/crypto.h"
60 #include "openssl/x509.h"
61 #include "openssl/pem.h"
62 #include "openssl/ssl.h"
63 #include "openssl/err.h"
74 #ifdef HAVE_NETINET_IN_H
75 #include <netinet/in.h>
80 #include <curl/curl.h>
82 #include "http_chunks.h" /* for the structs and enum stuff */
84 /* Download buffer size, keep it fairly big for speed reasons */
85 #define BUFSIZE (1024*50)
87 /* Defaul upload buffer size, keep it smallish to get faster progress meter
88 updates. This is just default, it is dynamic and adjusts to the upload
90 #define UPLOAD_BUFSIZE (1024*2)
92 /* Initial size of the buffer to store headers in, it'll be enlarged in case
94 #define HEADERSIZE 256
96 /* Just a convenience macro to get the larger value out of two given */
98 #define MAX(x,y) ((x)>(y)?(x):(y))
102 /* Types needed for krb4-ftp connections */
109 enum protection_level {
117 /* struct for data related to SSL and SSL connections */
118 struct ssl_connect_data {
119 bool use; /* use ssl encrypted communications TRUE/FALSE */
121 /* these ones requires specific SSL-types */
125 #endif /* USE_SSLEAY */
128 /* information about one single SSL session */
129 struct curl_ssl_session {
130 char *name; /* host name for which this ID was used */
131 void *sessionid; /* as returned from the SSL layer */
132 long age; /* just a number, the higher the more recent */
135 struct ssl_config_data {
136 long version; /* what version the client wants to use */
137 long certverifyresult; /* result from the certificate verification */
138 long verifypeer; /* set TRUE if this is desired */
139 long verifyhost; /* 0: no verif, 1: check that CN exists, 2: CN must match hostname */
140 char *CApath; /* DOES NOT WORK ON WINDOWS */
141 char *CAfile; /* cerficate to verify peer against */
142 char *random_file; /* path to file containing "random" data */
143 char *egdsocket; /* path to file containing the EGD daemon socket */
145 struct curl_ssl_session *session; /* array of 'numsessions' size */
146 long numsessions; /* SSL session id cache size */
147 long sessionage; /* number of the most recent session */
150 /****************************************************************************
152 ***************************************************************************/
154 struct FormData *sendit;
156 const char *p_pragma; /* Pragma: string */
157 const char *p_accept; /* Accept: string */
161 /* For FORM posting */
163 curl_read_callback storefread;
166 struct Curl_chunker chunk;
169 /****************************************************************************
171 ***************************************************************************/
174 char *user; /* user name string */
175 char *passwd; /* password string */
176 char *urlpath; /* the originally given path part of the URL */
177 char *dir; /* decoded directory */
178 char *file; /* decoded file */
180 char *entrypath; /* the PWD reply when we logged on */
183 /****************************************************************************
185 ***************************************************************************/
187 int fd; /* open file descriptor to read from! */
191 * Boolean values that concerns this connection.
194 bool close; /* if set, we close the connection after this request */
195 bool reuse; /* if set, this is a re-used connection */
196 bool chunk; /* if set, this is a chunked transfer-encoding */
197 bool httpproxy; /* if set, this transfer is done through a http proxy */
198 bool user_passwd; /* do we use user+password for this connection? */
199 bool proxy_user_passwd; /* user+password for the proxy? */
202 bool rangestringalloc; /* the range string is malloc()'ed */
204 bool resume_done; /* nothing was transfered, resumed transfer already
209 * The connectdata struct contains all fields and variables that should be
210 * unique for an entire connection.
213 /**** Fields set when inited and not modified again */
214 struct UrlData *data; /* link to the root CURL struct */
215 int connectindex; /* what index in the connects index this particular
218 long protocol; /* PROT_* flags concerning the protocol set */
219 #define PROT_MISSING (1<<0)
220 #define PROT_GOPHER (1<<1)
221 #define PROT_HTTP (1<<2)
222 #define PROT_HTTPS (1<<3)
223 #define PROT_FTP (1<<4)
224 #define PROT_TELNET (1<<5)
225 #define PROT_DICT (1<<6)
226 #define PROT_LDAP (1<<7)
227 #define PROT_FILE (1<<8)
228 #define PROT_FTPS (1<<9)
231 struct addrinfo *hp; /* host info pointer list */
232 struct addrinfo *ai; /* the particular host we use */
234 char *hostent_buf; /* pointer to allocated memory for name info */
236 struct sockaddr_in serv_addr;
238 char protostr[64]; /* store the protocol string in this buffer */
239 char gname[257]; /* store the hostname in this buffer */
240 char *name; /* host name pointer to fool around with */
241 char *path; /* allocated buffer to store the URL's path part in */
242 char *hostname; /* hostname to connect, as parsed from url */
243 long port; /* which port to use locally */
244 unsigned short remote_port; /* what remote port to connect to,
245 not the proxy port! */
249 char *range; /* range, if used. See README for detailed specification on
251 int resume_from; /* continue [ftp] transfer from here */
253 char *proxyhost; /* name of the http proxy host */
255 struct timeval now; /* "current" time */
256 struct timeval created; /* creation time */
257 int firstsocket; /* the main socket to use */
258 int secondarysocket; /* for i.e ftp transfers */
260 long upload_bufsize; /* adjust as you see fit, never bigger than BUFSIZE
261 never smaller than UPLOAD_BUFSIZE */
263 long maxdownload; /* in bytes, the maximum amount of data to fetch, 0
266 struct ssl_connect_data ssl; /* this is for ssl-stuff */
268 struct ConnectBits bits; /* various state-flags for this connection */
270 /* These two functions MUST be set by the curl_connect() function to be
271 be protocol dependent */
272 CURLcode (*curl_do)(struct connectdata *connect);
273 CURLcode (*curl_done)(struct connectdata *connect);
275 /* This function *MAY* be set to a protocol-dependent function that is run
276 * after the connect() and everything is done, as a step in the connection.
278 CURLcode (*curl_connect)(struct connectdata *connect);
280 /* This function *MAY* be set to a protocol-dependent function that is run
281 * by the curl_disconnect(), as a step in the disconnection.
283 CURLcode (*curl_disconnect)(struct connectdata *connect);
285 /* This function *MAY* be set to a protocol-dependent function that is run
286 * in the curl_close() function if protocol-specific cleanups are required.
288 CURLcode (*curl_close)(struct connectdata *connect);
290 /**** curl_get() phase fields */
293 int sockfd; /* socket to read from or -1 */
294 int size; /* -1 if unknown at this point */
295 bool getheader; /* TRUE if header parsing is wanted */
296 long *bytecountp; /* return number of bytes read or NULL */
299 int writesockfd; /* socket to write to, it may very well be
300 the same we read from. -1 disables */
301 long *writebytecountp; /* return number of bytes written or NULL */
303 /** Dynamicly allocated strings, may need to be freed before this **/
304 /** struct is killed. **/
305 struct dynamically_allocated_data {
306 char *proxyuserpwd; /* free later if not NULL! */
307 char *uagent; /* free later if not NULL! */
308 char *userpwd; /* free later if not NULL! */
309 char *rangeline; /* free later if not NULL! */
310 char *ref; /* free later if not NULL! */
311 char *cookie; /* free later if not NULL! */
312 char *host; /* free later if not NULL */
315 char *newurl; /* This can only be set if a Location: was in the
319 enum protection_level command_prot;
320 enum protection_level data_prot;
321 enum protection_level request_data_prot;
325 struct krb4buffer in_buffer, out_buffer;
329 struct Curl_sec_client_mech *mech;
330 struct sockaddr_in local_addr;
334 /*************** Request - specific items ************/
335 /* previously this was in the urldata struct */
338 struct HTTP *gopher; /* alias, just for the sake of being more readable */
339 struct HTTP *https; /* alias, just for the sake of being more readable */
342 void *telnet; /* private for telnet.c-eyes only */
343 #if 0 /* no need for special ones for these: */
354 long lastshow; /* time() of the last displayed progress meter or NULL to
355 force redraw at next call */
361 double current_speed; /* uses the currently fastest transfer */
363 bool callback; /* set when progress callback is used */
364 int width; /* screen width at download start */
365 int flags; /* see progress.h */
370 struct timeval start;
371 struct timeval t_startsingle;
372 /* various data stored for possible later report */
375 double t_pretransfer;
378 time_t filetime; /* If requested, this is might get set. It may be 0 if
379 the time was unretrievable */
383 double speeder[ CURR_TIME ];
388 HTTPREQ_NONE, /* first in list */
391 HTTPREQ_POST_FORM, /* we make a difference internally */
394 HTTPREQ_LAST /* last in list */
397 /* This struct is for boolean settings that define how to behave during
401 bool tunnel_thru_httpproxy;
407 bool http_fail_on_error;
408 bool http_follow_location;
409 bool http_include_header;
410 bool http_set_referer;
411 bool http_auto_referer; /* set "correct" referer when following location: */
419 bool this_is_a_follow; /* this is a followed Location: request */
420 bool krb4; /* kerberos4 connection requested */
421 bool proxystringalloc; /* the http proxy string is malloc()'ed */
422 bool urlstringalloc; /* the URL string is malloc()'ed */
423 bool reuse_forbid; /* if this is forbidden to be reused, close
425 bool reuse_fresh; /* do not re-use an existing connection for this
427 bool expect100header; /* TRUE if we added Expect: 100-continue to the
432 * As of April 11, 2000 we're now trying to split up the urldata struct in
433 * three different parts:
436 * 1 - No matter how many hosts and requests that are being performed, this
437 * goes for all of them.
440 * 2 - Host and protocol-specific. No matter if we do several transfers to and
441 * from this host, these variables stay the same.
444 * 3 - Request-specific. Variables that are of interest for this particular
445 * transfer being made right now. THIS IS WRONG STRUCT FOR THOSE.
447 * In Febrary 2001, this is being done stricter. The 'connectdata' struct
448 * MUST have all the connection oriented stuff as we may now have several
449 * simultaneous connections and connection structs in memory.
451 * From now on, the 'UrlData' must only contain data that is set once to go
452 * for many (perhaps) independent connections. Values that are generated or
453 * calculated internally MUST NOT be a part of this struct.
457 /*************** Global - specific items ************/
458 FILE *err; /* the stderr writes goes here */
459 char *errorbuffer; /* store failure messages in here */
461 /*************** Session - specific items ************/
462 char *proxy; /* if proxy, set it here */
463 char *proxyuserpwd; /* Proxy <user:password>, if used */
464 long proxyport; /* If non-zero, use this port number by default. If the
465 proxy string features a ":[port]" that one will override
469 long header_size; /* size of read header(s) in bytes */
470 long request_size; /* the amount of bytes sent in the request(s) */
472 void *out; /* the fetched file goes here */
473 void *in; /* the uploaded file is read from here */
474 void *writeheader; /* write the header to this is non-NULL */
476 char *url; /* what to get */
477 char *freethis; /* if non-NULL, an allocated string for the URL */
478 long use_port; /* which port to use (when not using default) */
479 struct Configbits bits; /* new-style (v7) flag data */
480 struct ssl_config_data ssl; /* this is for ssl-stuff */
482 char *userpwd; /* <user:password>, if used */
483 char *set_range; /* range, if used. See README for detailed specification on
486 /* stuff related to HTTP */
489 long maxredirs; /* maximum no. of http(s) redirects to follow */
491 bool free_referer; /* set TRUE if 'referer' points to a string we
493 char *useragent; /* User-Agent string */
494 char *postfields; /* if POST, set the fields' values here */
495 size_t postfieldsize; /* if POST, this might have a size to use instead of
496 strlen(), and then the data *may* be binary (contain
499 /* stuff related to FTP */
500 char *ftpport; /* port to send with the PORT command */
503 char *device; /* Interface to use */
505 /* function that stores the output:*/
506 curl_write_callback fwrite;
508 /* optional function that stores the header output:*/
509 curl_write_callback fwrite_header;
511 /* function that reads the input:*/
512 curl_read_callback fread;
514 /* function that wants progress information */
515 curl_progress_callback fprogress;
516 void *progress_client; /* pointer to pass to the progress callback */
518 /* function to call instead of the internal for password */
519 curl_passwd_callback fpasswd;
520 void *passwd_client; /* pointer to pass to the passwd callback */
522 long timeout; /* in seconds, 0 means no timeout */
523 long connecttimeout; /* in seconds, 0 means no timeout */
524 long infilesize; /* size of file to upload, -1 means unknown */
526 char buffer[BUFSIZE+1]; /* buffer with size BUFSIZE */
528 double current_speed; /* the ProgressShow() funcion sets this */
530 long low_speed_limit; /* bytes/second */
531 long low_speed_time; /* number of seconds */
533 int set_resume_from; /* continue [ftp] transfer from here */
535 char *cookie; /* HTTP cookie string to send */
537 struct curl_slist *headers; /* linked list of extra headers */
538 struct HttpPost *httppost; /* linked list of POST data */
540 char *cert; /* PEM-formatted certificate */
541 char *cert_passwd; /* plain text certificate password */
543 struct CookieInfo *cookies;
546 struct curl_slist *quote; /* before the transfer */
547 struct curl_slist *postquote; /* after the transfer */
549 /* Telnet negotiation options */
550 struct curl_slist *telnet_options; /* linked list of telnet options */
552 TimeCond timecondition; /* kind of comparison */
553 time_t timevalue; /* what time to compare with */
555 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
557 char *customrequest; /* http/ftp request to use */
559 char *headerbuff; /* allocated buffer to store headers in */
560 int headersize; /* size of the allocation */
562 struct Progress progress; /* for all the progress meter data */
564 #define MAX_CURL_USER_LENGTH 128
565 #define MAX_CURL_PASSWORD_LENGTH 128
567 char *auth_host; /* if set, this is the allocated string to the host name
568 * to which to send the authorization data to, and no other
569 * host (which location-following otherwise could lead to)
572 /* buffers to store authentication data in */
573 char user[MAX_CURL_USER_LENGTH];
574 char passwd[MAX_CURL_PASSWORD_LENGTH];
575 char proxyuser[MAX_CURL_USER_LENGTH];
576 char proxypasswd[MAX_CURL_PASSWORD_LENGTH];
578 char *krb4_level; /* what security level */
579 struct timeval keeps_speed; /* this should be request-specific */
581 /* 'connects' will be an allocated array with pointers. If the pointer is
582 set, it holds an allocated connection. */
583 struct connectdata **connects;
584 long numconnects; /* size of the 'connects' array */
585 curl_closepolicy closepolicy;
589 #define LIBCURL_NAME "libcurl"
590 #define LIBCURL_ID LIBCURL_NAME " " LIBCURL_VERSION " " SSL_ID