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 struct ssl_config_data {
129 long version; /* what version the client wants to use */
130 long certverifyresult; /* result from the certificate verification */
131 long verifypeer; /* set TRUE if this is desired */
132 char *CApath; /* DOES NOT WORK ON WINDOWS */
133 char *CAfile; /* cerficate to verify peer against */
134 char *random_file; /* path to file containing "random" data */
135 char *egdsocket; /* path to file containing the EGD daemon socket */
138 /****************************************************************************
140 ***************************************************************************/
142 struct FormData *sendit;
144 char *p_pragma; /* Pragma: string */
145 char *p_accept; /* Accept: string */
149 /* For FORM posting */
151 size_t (*storefread)(char *, size_t , size_t , FILE *);
154 struct Curl_chunker chunk;
157 /****************************************************************************
159 ***************************************************************************/
162 char *user; /* user name string */
163 char *passwd; /* password string */
164 char *urlpath; /* the originally given path part of the URL */
165 char *dir; /* decoded directory */
166 char *file; /* decoded file */
168 char *entrypath; /* the PWD reply when we logged on */
171 /****************************************************************************
173 ***************************************************************************/
175 int fd; /* open file descriptor to read from! */
179 * Boolean values that concerns this connection.
182 bool close; /* if set, we close the connection after this request */
183 bool reuse; /* if set, this is a re-used connection */
184 bool chunk; /* if set, this is a chunked transfer-encoding */
185 bool httpproxy; /* if set, this transfer is done through a http proxy */
186 bool user_passwd; /* do we use user+password for this connection? */
187 bool proxy_user_passwd; /* user+password for the proxy? */
190 bool rangestringalloc; /* the range string is malloc()'ed */
194 * The connectdata struct contains all fields and variables that should be
195 * unique for an entire connection.
198 /**** Fields set when inited and not modified again */
199 struct UrlData *data; /* link to the root CURL struct */
200 int connectindex; /* what index in the connects index this particular
203 long protocol; /* PROT_* flags concerning the protocol set */
204 #define PROT_MISSING (1<<0)
205 #define PROT_GOPHER (1<<1)
206 #define PROT_HTTP (1<<2)
207 #define PROT_HTTPS (1<<3)
208 #define PROT_FTP (1<<4)
209 #define PROT_TELNET (1<<5)
210 #define PROT_DICT (1<<6)
211 #define PROT_LDAP (1<<7)
212 #define PROT_FILE (1<<8)
213 #define PROT_FTPS (1<<9)
216 struct addrinfo *hp; /* host info pointer list */
217 struct addrinfo *ai; /* the particular host we use */
219 char *hostent_buf; /* pointer to allocated memory for name info */
221 struct sockaddr_in serv_addr;
223 char protostr[64]; /* store the protocol string in this buffer */
224 char gname[257]; /* store the hostname in this buffer */
225 char *name; /* host name pointer to fool around with */
226 char *path; /* allocated buffer to store the URL's path part in */
227 char *hostname; /* hostname to connect, as parsed from url */
228 long port; /* which port to use locally */
229 unsigned short remote_port; /* what remote port to connect to,
230 not the proxy port! */
234 char *range; /* range, if used. See README for detailed specification on
236 int resume_from; /* continue [ftp] transfer from here */
238 char *proxyhost; /* name of the http proxy host */
240 struct timeval now; /* "current" time */
241 struct timeval created; /* creation time */
242 int firstsocket; /* the main socket to use */
243 int secondarysocket; /* for i.e ftp transfers */
245 long upload_bufsize; /* adjust as you see fit, never bigger than BUFSIZE
246 never smaller than UPLOAD_BUFSIZE */
248 long maxdownload; /* in bytes, the maximum amount of data to fetch, 0
251 struct ssl_connect_data ssl; /* this is for ssl-stuff */
253 struct ConnectBits bits; /* various state-flags for this connection */
255 /* These two functions MUST be set by the curl_connect() function to be
256 be protocol dependent */
257 CURLcode (*curl_do)(struct connectdata *connect);
258 CURLcode (*curl_done)(struct connectdata *connect);
260 /* This function *MAY* be set to a protocol-dependent function that is run
261 * after the connect() and everything is done, as a step in the connection.
263 CURLcode (*curl_connect)(struct connectdata *connect);
265 /* This function *MAY* be set to a protocol-dependent function that is run
266 * by the curl_disconnect(), as a step in the disconnection.
268 CURLcode (*curl_disconnect)(struct connectdata *connect);
270 /* This function *MAY* be set to a protocol-dependent function that is run
271 * in the curl_close() function if protocol-specific cleanups are required.
273 CURLcode (*curl_close)(struct connectdata *connect);
275 /**** curl_get() phase fields */
278 int sockfd; /* socket to read from or -1 */
279 int size; /* -1 if unknown at this point */
280 bool getheader; /* TRUE if header parsing is wanted */
281 long *bytecountp; /* return number of bytes read or NULL */
284 int writesockfd; /* socket to write to, it may very well be
285 the same we read from. -1 disables */
286 long *writebytecountp; /* return number of bytes written or NULL */
288 /** Dynamicly allocated strings, may need to be freed before this **/
289 /** struct is killed. **/
290 struct dynamically_allocated_data {
291 char *proxyuserpwd; /* free later if not NULL! */
292 char *uagent; /* free later if not NULL! */
293 char *userpwd; /* free later if not NULL! */
294 char *rangeline; /* free later if not NULL! */
295 char *ref; /* free later if not NULL! */
296 char *cookie; /* free later if not NULL! */
297 char *host; /* free later if not NULL */
300 char *newurl; /* This can only be set if a Location: was in the
304 enum protection_level command_prot;
305 enum protection_level data_prot;
306 enum protection_level request_data_prot;
310 struct krb4buffer in_buffer, out_buffer;
316 /*************** Request - specific items ************/
317 /* previously this was in the urldata struct */
320 struct HTTP *gopher; /* alias, just for the sake of being more readable */
321 struct HTTP *https; /* alias, just for the sake of being more readable */
324 void *telnet; /* private for telnet.c-eyes only */
325 #if 0 /* no need for special ones for these: */
336 long lastshow; /* time() of the last displayed progress meter or NULL to
337 force redraw at next call */
343 double current_speed; /* uses the currently fastest transfer */
345 bool callback; /* set when progress callback is used */
346 int width; /* screen width at download start */
347 int flags; /* see progress.h */
352 struct timeval start;
353 struct timeval t_startsingle;
354 /* various data stored for possible later report */
357 double t_pretransfer;
360 time_t filetime; /* If requested, this is might get set. It may be 0 if
361 the time was unretrievable */
365 double speeder[ CURR_TIME ];
370 HTTPREQ_NONE, /* first in list */
373 HTTPREQ_POST_FORM, /* we make a difference internally */
376 HTTPREQ_LAST /* last in list */
379 /* This struct is for boolean settings that define how to behave during
382 /* these four request types mirror the httpreq field */
389 bool tunnel_thru_httpproxy;
395 bool http_fail_on_error;
396 bool http_follow_location;
397 bool http_include_header;
398 bool http_set_referer;
399 bool http_auto_referer; /* set "correct" referer when following location: */
408 bool this_is_a_follow; /* this is a followed Location: request */
409 bool krb4; /* kerberos4 connection requested */
410 bool proxystringalloc; /* the http proxy string is malloc()'ed */
411 bool urlstringalloc; /* the URL string is malloc()'ed */
412 bool reuse_forbid; /* if this is forbidden to be reused, close
414 bool reuse_fresh; /* do not re-use an existing connection for this
419 * As of April 11, 2000 we're now trying to split up the urldata struct in
420 * three different parts:
423 * 1 - No matter how many hosts and requests that are being performed, this
424 * goes for all of them.
427 * 2 - Host and protocol-specific. No matter if we do several transfers to and
428 * from this host, these variables stay the same.
431 * 3 - Request-specific. Variables that are of interest for this particular
432 * transfer being made right now. THIS IS WRONG STRUCT FOR THOSE.
434 * In Febrary 2001, this is being done stricter. The 'connectdata' struct
435 * MUST have all the connection oriented stuff as we may now have several
436 * simultaneous connections and connection structs in memory.
438 * From now on, the 'UrlData' must only contain data that is set once to go
439 * for many (perhaps) independent connections. Values that are generated or
440 * calculated internally MUST NOT be a part of this struct.
444 /*************** Global - specific items ************/
445 FILE *err; /* the stderr writes goes here */
446 char *errorbuffer; /* store failure messages in here */
448 /*************** Session - specific items ************/
449 char *proxy; /* if proxy, set it here */
450 char *proxyuserpwd; /* Proxy <user:password>, if used */
451 long proxyport; /* If non-zero, use this port number by default. If the
452 proxy string features a ":[port]" that one will override
456 long header_size; /* size of read header(s) in bytes */
457 long request_size; /* the amount of bytes sent in the request(s) */
459 void *out; /* the fetched file goes here */
460 void *in; /* the uploaded file is read from here */
461 void *writeheader; /* write the header to this is non-NULL */
463 char *url; /* what to get */
464 char *freethis; /* if non-NULL, an allocated string for the URL */
465 long use_port; /* which port to use (when not using default) */
466 struct Configbits bits; /* new-style (v7) flag data */
467 struct ssl_config_data ssl; /* this is for ssl-stuff */
469 char *userpwd; /* <user:password>, if used */
470 char *set_range; /* range, if used. See README for detailed specification on
473 /* stuff related to HTTP */
476 long maxredirs; /* maximum no. of http(s) redirects to follow */
478 bool free_referer; /* set TRUE if 'referer' points to a string we
480 char *useragent; /* User-Agent string */
481 char *postfields; /* if POST, set the fields' values here */
482 long postfieldsize; /* if POST, this might have a size to use instead of
483 strlen(), and then the data *may* be binary (contain
486 /* stuff related to FTP */
487 char *ftpport; /* port to send with the PORT command */
490 char *device; /* Interface to use */
492 /* function that stores the output:*/
493 curl_write_callback fwrite;
495 /* optional function that stores the header output:*/
496 curl_write_callback fwrite_header;
498 /* function that reads the input:*/
499 curl_read_callback fread;
501 /* function that wants progress information */
502 curl_progress_callback fprogress;
503 void *progress_client; /* pointer to pass to the progress callback */
505 /* function to call instead of the internal for password */
506 curl_passwd_callback fpasswd;
507 void *passwd_client; /* pointer to pass to the passwd callback */
509 long timeout; /* in seconds, 0 means no timeout */
510 long connecttimeout; /* in seconds, 0 means no timeout */
511 long infilesize; /* size of file to upload, -1 means unknown */
513 char buffer[BUFSIZE+1]; /* buffer with size BUFSIZE */
515 double current_speed; /* the ProgressShow() funcion sets this */
517 long low_speed_limit; /* bytes/second */
518 long low_speed_time; /* number of seconds */
520 int set_resume_from; /* continue [ftp] transfer from here */
522 char *cookie; /* HTTP cookie string to send */
524 struct curl_slist *headers; /* linked list of extra headers */
525 struct HttpPost *httppost; /* linked list of POST data */
527 char *cert; /* PEM-formatted certificate */
528 char *cert_passwd; /* plain text certificate password */
530 struct CookieInfo *cookies;
533 struct curl_slist *quote; /* before the transfer */
534 struct curl_slist *postquote; /* after the transfer */
536 /* Telnet negotiation options */
537 struct curl_slist *telnet_options; /* linked list of telnet options */
539 TimeCond timecondition; /* kind of comparison */
540 time_t timevalue; /* what time to compare with */
542 Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
544 char *customrequest; /* http/ftp request to use */
546 char *headerbuff; /* allocated buffer to store headers in */
547 int headersize; /* size of the allocation */
549 struct Progress progress; /* for all the progress meter data */
551 #define MAX_CURL_USER_LENGTH 128
552 #define MAX_CURL_PASSWORD_LENGTH 128
554 char *auth_host; /* if set, this is the allocated string to the host name
555 * to which to send the authorization data to, and no other
556 * host (which location-following otherwise could lead to)
559 /* buffers to store authentication data in */
560 char user[MAX_CURL_USER_LENGTH];
561 char passwd[MAX_CURL_PASSWORD_LENGTH];
562 char proxyuser[MAX_CURL_USER_LENGTH];
563 char proxypasswd[MAX_CURL_PASSWORD_LENGTH];
565 char *krb4_level; /* what security level */
566 struct timeval keeps_speed; /* this should be request-specific */
568 /* 'connects' will be an allocated array with pointers. If the pointer is
569 set, it holds an allocated connection. */
570 struct connectdata **connects;
571 size_t numconnects; /* size of the 'connects' array */
572 curl_closepolicy closepolicy;
576 #define LIBCURL_NAME "libcurl"
577 #define LIBCURL_ID LIBCURL_NAME " " LIBCURL_VERSION " " SSL_ID
579 CURLcode Curl_getinfo(CURL *curl, CURLINFO info, ...);
582 * Here follows function prototypes from what we used to plan to call
583 * the "low level" interface. It is no longer prioritized and it is not likely
584 * to ever be supported to external users.
586 * I removed all the comments to them as well, as they were no longer accurate
587 * and they're not meant for "public use" anymore.
590 CURLcode Curl_open(CURL **curl, char *url);
591 CURLcode Curl_setopt(CURL *handle, CURLoption option, ...);
592 CURLcode Curl_close(CURL *curl); /* the opposite of curl_open() */
593 CURLcode Curl_connect(struct UrlData *,
594 struct connectdata **,
596 CURLcode Curl_do(struct connectdata *);
597 CURLcode Curl_done(struct connectdata *);
598 CURLcode Curl_disconnect(struct connectdata *);