1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
|
#ifndef __URLDATA_H
#define __URLDATA_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
/* This file is for lib internal stuff */
#include "setup.h"
#define PORT_FTP 21
#define PORT_TELNET 23
#define PORT_GOPHER 70
#define PORT_HTTP 80
#define PORT_HTTPS 443
#define PORT_DICT 2628
#define PORT_LDAP 389
#define DICT_MATCH "/MATCH:"
#define DICT_MATCH2 "/M:"
#define DICT_MATCH3 "/FIND:"
#define DICT_DEFINE "/DEFINE:"
#define DICT_DEFINE2 "/D:"
#define DICT_DEFINE3 "/LOOKUP:"
#define CURL_DEFAULT_USER "anonymous"
#define CURL_DEFAULT_PASSWORD "curl_by_daniel@haxx.se"
#include "cookie.h"
#include "formdata.h"
#ifdef USE_SSLEAY
/* SSLeay stuff usually in /usr/local/ssl/include */
#ifdef USE_OPENSSL
#include "openssl/rsa.h"
#include "openssl/crypto.h"
#include "openssl/x509.h"
#include "openssl/pem.h"
#include "openssl/ssl.h"
#include "openssl/err.h"
#ifdef HAVE_OPENSSL_ENGINE_H
#include <openssl/engine.h>
#endif
#else
#include "rsa.h"
#include "crypto.h"
#include "x509.h"
#include "pem.h"
#include "ssl.h"
#include "err.h"
#endif
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include "timeval.h"
#include <curl/curl.h>
#include "http_chunks.h" /* for the structs and enum stuff */
#include "hostip.h"
#include "hash.h"
#ifdef HAVE_ZLIB_H
#include <zlib.h> /* for content-encoding */
#endif
#ifdef GSSAPI
#include <gssapi.h>
#endif
/* Download buffer size, keep it fairly big for speed reasons */
#define BUFSIZE CURL_MAX_WRITE_SIZE
/* Initial size of the buffer to store headers in, it'll be enlarged in case
of need. */
#define HEADERSIZE 256
/* Maximum number of dirs supported by libcurl in a FTP dir hierarchy */
#define CURL_MAX_FTP_DIRDEPTH 100
/* Just a convenience macro to get the larger value out of two given */
#ifndef MAX
#define MAX(x,y) ((x)>(y)?(x):(y))
#endif
#ifdef KRB4
/* Types needed for krb4-ftp connections */
struct krb4buffer {
void *data;
size_t size;
size_t index;
int eof_flag;
};
enum protection_level {
prot_clear,
prot_safe,
prot_confidential,
prot_private
};
#endif
/* struct for data related to SSL and SSL connections */
struct ssl_connect_data {
bool use; /* use ssl encrypted communications TRUE/FALSE */
#ifdef USE_SSLEAY
/* these ones requires specific SSL-types */
SSL_CTX* ctx;
SSL* handle;
X509* server_cert;
#endif /* USE_SSLEAY */
};
struct ssl_config_data {
long version; /* what version the client wants to use */
long certverifyresult; /* result from the certificate verification */
long verifypeer; /* set TRUE if this is desired */
long verifyhost; /* 0: no verify
1: check that CN exists
2: CN must match hostname */
char *CApath; /* DOES NOT WORK ON WINDOWS */
char *CAfile; /* cerficate to verify peer against */
char *random_file; /* path to file containing "random" data */
char *egdsocket; /* path to file containing the EGD daemon socket */
char *cipher_list; /* list of ciphers to use */
long numsessions; /* SSL session id cache size */
curl_ssl_ctx_callback fsslctx; /* function to initialize ssl ctx */
void *fsslctxp; /*parameter for call back */
};
/* information stored about one single SSL session */
struct curl_ssl_session {
char *name; /* host name for which this ID was used */
void *sessionid; /* as returned from the SSL layer */
long age; /* just a number, the higher the more recent */
unsigned short remote_port; /* remote port to connect to */
struct ssl_config_data ssl_config; /* setup for this session */
};
/* Struct used for Digest challenge-response authentication */
struct digestdata {
char *nonce;
char *cnonce;
char *realm;
int algo;
};
typedef enum {
NTLMSTATE_NONE,
NTLMSTATE_TYPE1,
NTLMSTATE_TYPE2,
NTLMSTATE_TYPE3,
NTLMSTATE_LAST
} curlntlm;
/* Struct used for Digest challenge-response authentication */
struct ntlmdata {
curlntlm state;
unsigned char nonce[8];
};
#ifdef GSSAPI
struct negotiatedata {
OM_uint32 status;
gss_ctx_id_t context;
gss_name_t server_name;
gss_buffer_desc output_token;
};
#endif
/****************************************************************************
* HTTP unique setup
***************************************************************************/
struct HTTP {
struct FormData *sendit;
int postsize;
char *postdata;
const char *p_pragma; /* Pragma: string */
const char *p_accept; /* Accept: string */
long readbytecount;
long writebytecount;
/* For FORM posting */
struct Form form;
struct Curl_chunker chunk;
struct back {
curl_read_callback fread; /* backup storage for fread pointer */
void *fread_in; /* backup storage for fread_in pointer */
char *postdata;
int postsize;
} backup;
enum {
HTTPSEND_NADA, /* init */
HTTPSEND_REQUEST, /* sending a request */
HTTPSEND_BODY, /* sending body */
HTTPSEND_LAST /* never use this */
} sending;
void *send_buffer; /* used if the request couldn't be sent in one chunk,
points to an allocated send_buffer struct */
};
/****************************************************************************
* FTP unique setup
***************************************************************************/
struct FTP {
long *bytecountp;
char *user; /* user name string */
char *passwd; /* password string */
char *urlpath; /* the originally given path part of the URL */
char *dirs[CURL_MAX_FTP_DIRDEPTH]; /* path components */
char *file; /* decoded file */
char *entrypath; /* the PWD reply when we logged on */
char *cache; /* data cache between getresponse()-calls */
size_t cache_size; /* size of cache in bytes */
bool dont_check; /* Set to TRUE to prevent the final (post-transfer)
file size and 226/250 status check. It should still
read the line, just ignore the result. */
bool no_transfer; /* nothing was transfered, (possibly because a resumed
transfer already was complete) */
long response_time; /* When no timeout is given, this is the amount of
seconds we await for an FTP response. Initialized
in Curl_ftp_connect() */
};
/****************************************************************************
* FILE unique setup
***************************************************************************/
struct FILE {
int fd; /* open file descriptor to read from! */
};
/*
* Boolean values that concerns this connection.
*/
struct ConnectBits {
bool close; /* if set, we close the connection after this request */
bool reuse; /* if set, this is a re-used connection */
bool chunk; /* if set, this is a chunked transfer-encoding */
bool httpproxy; /* if set, this transfer is done through a http proxy */
bool user_passwd; /* do we use user+password for this connection? */
bool proxy_user_passwd; /* user+password for the proxy? */
bool ipv6_ip; /* we communicate with a remove site specified with pure IPv6
IP address */
bool use_range;
bool rangestringalloc; /* the range string is malloc()'ed */
bool do_more; /* this is set TRUE if the ->curl_do_more() function is
supposed to be called, after ->curl_do() */
bool upload_chunky; /* set TRUE if we are doing chunked transfer-encoding
on upload */
bool getheader; /* TRUE if header parsing is wanted */
bool forbidchunk; /* used only to explicitly forbid chunk-upload for
specific upload buffers. See readmoredata() in
http.c for details. */
bool tcpconnect; /* the tcp stream (or simimlar) is connected, this
is set the first time on the first connect function
call */
};
/*
* This struct is all the previously local variables from Curl_perform() moved
* to struct to allow the function to return and get re-invoked better without
* losing state.
*/
struct Curl_transfer_keeper {
int bytecount; /* total number of bytes read */
int writebytecount; /* number of bytes written */
long contentlength; /* size of incoming data */
struct timeval start; /* transfer started at this time */
struct timeval now; /* current time */
bool header; /* incoming data has HTTP header */
enum {
HEADER_NORMAL, /* no bad header at all */
HEADER_PARTHEADER, /* part of the chunk is a bad header, the rest is
normal data */
HEADER_ALLBAD /* all was believed to be header */
} badheader; /* the header was deemed bad and will be
written as body */
int headerline; /* counts header lines to better track the
first one */
char *hbufp; /* points at *end* of header line */
int hbuflen;
char *str; /* within buf */
char *str_start; /* within buf */
char *end_ptr; /* within buf */
char *p; /* within headerbuff */
bool content_range; /* set TRUE if Content-Range: was found */
int offset; /* possible resume offset read from the
Content-Range: header */
int httpcode; /* error code from the 'HTTP/1.? XXX' line */
int httpversion; /* the HTTP version*10 */
struct timeval start100; /* time stamp to wait for the 100 code from */
bool write_after_100_header; /* TRUE = we enable the write after we
received a 100-continue/timeout or
FALSE = directly */
bool wait100_after_headers; /* TRUE = after the request-headers have been
sent off properly, we go into the wait100
state, FALSE = don't */
int content_encoding; /* What content encoding. sec 3.5, RFC2616. */
#define IDENTITY 0 /* No encoding */
#define DEFLATE 1 /* zlib delfate [RFC 1950 & 1951] */
#define GZIP 2 /* gzip algorithm [RFC 1952] */
#define COMPRESS 3 /* Not handled, added for completeness */
#ifdef HAVE_LIBZ
bool zlib_init; /* True if zlib already initialized;
undefined if Content-Encoding header. */
z_stream z; /* State structure for zlib. */
#endif
/* for the low speed checks: */
time_t timeofdoc;
long bodywrites;
char *buf;
char *uploadbuf;
int maxfd;
/* pointers to the actual descriptors we check */
fd_set *readfdp;
fd_set *writefdp;
/* the file descriptors to play with */
fd_set readfd;
fd_set writefd;
fd_set rkeepfd;
fd_set wkeepfd;
int keepon;
bool upload_done; /* set to TRUE when doing chunked transfer-encoding upload
and we're uploading the last chunk */
bool ignorebody; /* we read a response-body but we ignore it! */
};
/*
* The connectdata struct contains all fields and variables that should be
* unique for an entire connection.
*/
struct connectdata {
/**** Fields set when inited and not modified again */
struct SessionHandle *data; /* link to the root CURL struct */
int connectindex; /* what index in the connects index this particular
struct has */
long protocol; /* PROT_* flags concerning the protocol set */
#define PROT_MISSING (1<<0)
#define PROT_GOPHER (1<<1)
#define PROT_HTTP (1<<2)
#define PROT_HTTPS (1<<3)
#define PROT_FTP (1<<4)
#define PROT_TELNET (1<<5)
#define PROT_DICT (1<<6)
#define PROT_LDAP (1<<7)
#define PROT_FILE (1<<8)
#define PROT_FTPS (1<<9)
#define PROT_SSL (1<<10) /* protocol requires SSL */
/* the particular host we use, in two different ways */
struct Curl_dns_entry *connect_addr;
#ifdef ENABLE_IPV6
struct addrinfo *serv_addr;
#else
struct sockaddr_in serv_addr;
#endif
char protostr[64]; /* store the protocol string in this buffer */
char gname[513]; /* store the hostname in this buffer */
char *name; /* host name pointer to fool around with */
char *path; /* allocated buffer to store the URL's path part in */
char *hostname; /* hostname to connect, as parsed from url */
long port; /* which port to use locally */
unsigned short remote_port; /* what remote port to connect to,
not the proxy port! */
char *ppath;
long bytecount;
long headerbytecount; /* only count received headers */
char *range; /* range, if used. See README for detailed specification on
this syntax. */
ssize_t resume_from; /* continue [ftp] transfer from here */
char *proxyhost; /* name of the http proxy host */
struct timeval now; /* "current" time */
struct timeval created; /* creation time */
int firstsocket; /* the main socket to use */
int secondarysocket; /* for i.e ftp transfers */
long maxdownload; /* in bytes, the maximum amount of data to fetch, 0
means unlimited */
struct ssl_connect_data ssl; /* this is for ssl-stuff */
struct ssl_config_data ssl_config;
struct ConnectBits bits; /* various state-flags for this connection */
/* These two functions MUST be set by the curl_connect() function to be
be protocol dependent */
CURLcode (*curl_do)(struct connectdata *connect);
CURLcode (*curl_done)(struct connectdata *connect);
/* If the curl_do() function is better made in two halves, this
* curl_do_more() function will be called afterwards, if set. For example
* for doing the FTP stuff after the PASV/PORT command.
*/
CURLcode (*curl_do_more)(struct connectdata *connect);
/* This function *MAY* be set to a protocol-dependent function that is run
* after the connect() and everything is done, as a step in the connection.
*/
CURLcode (*curl_connect)(struct connectdata *connect);
/* This function *MAY* be set to a protocol-dependent function that is run
* by the curl_disconnect(), as a step in the disconnection.
*/
CURLcode (*curl_disconnect)(struct connectdata *connect);
/* This function *MAY* be set to a protocol-dependent function that is run
* in the curl_close() function if protocol-specific cleanups are required.
*/
CURLcode (*curl_close)(struct connectdata *connect);
/**** curl_get() phase fields */
/* READ stuff */
int sockfd; /* socket to read from or -1 */
int size; /* -1 if unknown at this point */
long *bytecountp; /* return number of bytes read or NULL */
/* WRITE stuff */
int writesockfd; /* socket to write to, it may very well be
the same we read from. -1 disables */
long *writebytecountp; /* return number of bytes written or NULL */
/** Dynamicly allocated strings, may need to be freed before this **/
/** struct is killed. **/
struct dynamically_allocated_data {
char *proxyuserpwd; /* free later if not NULL! */
char *uagent; /* free later if not NULL! */
char *accept_encoding; /* free later if not NULL! */
char *userpwd; /* free later if not NULL! */
char *rangeline; /* free later if not NULL! */
char *ref; /* free later if not NULL! */
char *cookie; /* free later if not NULL! */
char *host; /* free later if not NULL */
char *cookiehost; /* free later if not NULL */
} allocptr;
char *newurl; /* This can only be set if a Location: was in the
document headers */
#ifdef KRB4
enum protection_level command_prot;
enum protection_level data_prot;
enum protection_level request_data_prot;
size_t buffer_size;
struct krb4buffer in_buffer, out_buffer;
int sec_complete;
void *app_data;
struct Curl_sec_client_mech *mech;
struct sockaddr_in local_addr;
#endif
/*************** Request - specific items ************/
/* previously this was in the urldata struct */
union {
struct HTTP *http;
struct HTTP *gopher; /* alias, just for the sake of being more readable */
struct HTTP *https; /* alias, just for the sake of being more readable */
struct FTP *ftp;
struct FILE *file;
void *telnet; /* private for telnet.c-eyes only */
#if 0 /* no need for special ones for these: */
struct LDAP *ldap;
struct DICT *dict;
#endif
void *generic;
} proto;
/* This struct is inited when needed */
struct Curl_transfer_keeper keep;
/* 'upload_present' is used to keep a byte counter of how much data there is
still left in the buffer, aimed for upload. */
int upload_present;
/* 'upload_fromhere' is used as a read-pointer when we uploaded parts of a
buffer, so the next read should read from where this pointer points to,
and the 'upload_present' contains the number of bytes available at this
position */
char *upload_fromhere;
curl_read_callback fread; /* function that reads the input */
void *fread_in; /* pointer to pass to the fread() above */
};
/* The end of connectdata. */
/*
* Struct to keep statistical and informational data.
*/
struct PureInfo {
int httpcode;
int httpversion;
time_t filetime; /* If requested, this is might get set. Set to -1 if
the time was unretrievable */
long header_size; /* size of read header(s) in bytes */
long request_size; /* the amount of bytes sent in the request(s) */
char *contenttype; /* the content type of the object */
};
struct Progress {
long lastshow; /* time() of the last displayed progress meter or NULL to
force redraw at next call */
double size_dl;
double size_ul;
double downloaded;
double uploaded;
double current_speed; /* uses the currently fastest transfer */
bool callback; /* set when progress callback is used */
int width; /* screen width at download start */
int flags; /* see progress.h */
double timespent;
double dlspeed;
double ulspeed;
double t_nslookup;
double t_connect;
double t_pretransfer;
double t_starttransfer;
double t_redirect;
struct timeval start;
struct timeval t_startsingle;
#define CURR_TIME (5+1) /* 6 entries for 5 seconds */
double speeder[ CURR_TIME ];
struct timeval speeder_time[ CURR_TIME ];
int speeder_c;
};
typedef enum {
HTTPREQ_NONE, /* first in list */
HTTPREQ_GET,
HTTPREQ_POST,
HTTPREQ_POST_FORM, /* we make a difference internally */
HTTPREQ_PUT,
HTTPREQ_CUSTOM,
HTTPREQ_LAST /* last in list */
} Curl_HttpReq;
/*
* Values that are generated, temporary or calculated internally for a
* "session handle" must be defined within the 'struct urlstate'. This struct
* will be used within the SessionHandle struct. When the 'SessionHandle'
* struct is cloned, this data MUST NOT be copied.
*
* Remember that any "state" information goes globally for the curl handle.
* Session-data MUST be put in the connectdata struct and here. */
#define MAX_CURL_USER_LENGTH 256
#define MAX_CURL_PASSWORD_LENGTH 256
#define MAX_CURL_USER_LENGTH_TXT "255"
#define MAX_CURL_PASSWORD_LENGTH_TXT "255"
struct UrlState {
enum {
Curl_if_none,
Curl_if_easy,
Curl_if_multi
} used_interface;
/* buffers to store authentication data in, as parsed from input options */
char user[MAX_CURL_USER_LENGTH];
char passwd[MAX_CURL_PASSWORD_LENGTH];
char proxyuser[MAX_CURL_USER_LENGTH];
char proxypasswd[MAX_CURL_PASSWORD_LENGTH];
bool passwdgiven; /* set TRUE if an application-provided password has been
set */
struct timeval keeps_speed; /* for the progress meter really */
/* 'connects' will be an allocated array with pointers. If the pointer is
set, it holds an allocated connection. */
struct connectdata **connects;
long numconnects; /* size of the 'connects' array */
char *headerbuff; /* allocated buffer to store headers in */
int headersize; /* size of the allocation */
char buffer[BUFSIZE+1]; /* download buffer */
char uploadbuffer[BUFSIZE+1]; /* upload buffer */
double current_speed; /* the ProgressShow() funcion sets this */
bool this_is_a_follow; /* this is a followed Location: request */
char *auth_host; /* if set, this should be the host name that we will
sent authorization to, no else. Used to make Location:
following not keep sending user+password... This is
strdup() data.
*/
struct curl_ssl_session *session; /* array of 'numsessions' size */
long sessionage; /* number of the most recent session */
char *scratch; /* huge buffer[BUFSIZE*2] when doing upload CRLF replacing */
bool errorbuf; /* Set to TRUE if the error buffer is already filled in.
This must be set to FALSE every time _easy_perform() is
called. */
#ifdef HAVE_SIGNAL
/* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
void (*prev_signal)(int sig);
#endif
bool allow_port; /* Is set.use_port allowed to take effect or not. This
is always set TRUE when curl_easy_perform() is called. */
struct digestdata digest;
struct ntlmdata ntlm;
#ifdef GSSAPI
struct negotiatedata negotiate;
#endif
long authwant; /* inherited from what the user set with CURLOPT_HTTPAUTH */
long authavail; /* what the server reports */
};
/*
* This 'DynamicStatic' struct defines dynamic states that actually change
* values in the 'UserDefined' area, which MUST be taken into consideration
* if the UserDefined struct is cloned or similar. You can probably just
* copy these, but each one indicate a special action on other data.
*/
struct DynamicStatic {
char *url; /* work URL, copied from UserDefined */
bool url_alloc; /* URL string is malloc()'ed */
bool url_changed; /* set on CURL_OPT_URL, used to detect if the URL was
changed after the connect phase, as we allow callback
to change it and if so, we reconnect to use the new
URL instead */
char *proxy; /* work proxy, copied from UserDefined */
bool proxy_alloc; /* http proxy string is malloc()'ed */
char *referer; /* referer string */
bool referer_alloc; /* referer sting is malloc()ed */
struct curl_slist *cookielist; /* list of cookie files set by
curl_easy_setopt(COOKIEFILE) calls */
};
/*
* This 'UserDefined' struct must only contain data that is set once to go
* for many (perhaps) independent connections. Values that are generated or
* calculated internally for the "session handle" MUST be defined within the
* 'struct urlstate' instead. The only exceptions MUST note the changes in
* the 'DynamicStatic' struct.
*/
struct UserDefined {
FILE *err; /* the stderr user data goes here */
void *debugdata; /* the data that will be passed to fdebug */
char *errorbuffer; /* store failure messages in here */
char *proxyuserpwd; /* Proxy <user:password>, if used */
long proxyport; /* If non-zero, use this port number by default. If the
proxy string features a ":[port]" that one will override
this. */
void *out; /* the fetched file goes here */
void *in; /* the uploaded file is read from here */
void *writeheader; /* write the header to this is non-NULL */
char *set_url; /* what original URL to work on */
char *set_proxy; /* proxy to use */
long use_port; /* which port to use (when not using default) */
char *userpwd; /* <user:password>, if used */
long httpauth; /* what kind of HTTP authentication to use (bitmask) */
char *set_range; /* range, if used. See README for detailed specification
on this syntax. */
long followlocation; /* as in HTTP Location: */
long maxredirs; /* maximum no. of http(s) redirects to follow */
char *set_referer; /* custom string */
bool free_referer; /* set TRUE if 'referer' points to a string we
allocated */
char *useragent; /* User-Agent string */
char *encoding; /* Accept-Encoding string */
char *postfields; /* if POST, set the fields' values here */
size_t postfieldsize; /* if POST, this might have a size to use instead of
strlen(), and then the data *may* be binary (contain
zero bytes) */
char *ftpport; /* port to send with the FTP PORT command */
char *device; /* network interface to use */
curl_write_callback fwrite; /* function that stores the output */
curl_write_callback fwrite_header; /* function that stores headers */
curl_read_callback fread; /* function that reads the input */
curl_progress_callback fprogress; /* function for progress information */
curl_debug_callback fdebug; /* function that write informational data */
void *progress_client; /* pointer to pass to the progress callback */
curl_passwd_callback fpasswd; /* call for password */
void *passwd_client; /* pass to the passwd callback */
long timeout; /* in seconds, 0 means no timeout */
long connecttimeout; /* in seconds, 0 means no timeout */
long infilesize; /* size of file to upload, -1 means unknown */
long low_speed_limit; /* bytes/second */
long low_speed_time; /* number of seconds */
int set_resume_from; /* continue [ftp] transfer from here */
char *cookie; /* HTTP cookie string to send */
struct curl_slist *headers; /* linked list of extra headers */
struct HttpPost *httppost; /* linked list of POST data */
char *cert; /* certificate */
char *cert_type; /* format for certificate (default: PEM) */
char *key; /* private key */
char *key_type; /* format for private key (default: PEM) */
char *key_passwd; /* plain text private key password */
char *crypto_engine; /* name of the crypto engine to use */
char *cookiejar; /* dump all cookies to this file */
bool cookiesession; /* new cookie session? */
bool crlf; /* convert crlf on ftp upload(?) */
struct curl_slist *quote; /* after connection is established */
struct curl_slist *postquote; /* after the transfer */
struct curl_slist *prequote; /* before the transfer, after type (Wesley Laxton)*/
struct curl_slist *telnet_options; /* linked list of telnet options */
curl_TimeCond timecondition; /* kind of time/date comparison */
time_t timevalue; /* what time to compare with */
curl_closepolicy closepolicy; /* connection cache close concept */
Curl_HttpReq httpreq; /* what kind of HTTP request (if any) is this */
char *customrequest; /* HTTP/FTP request to use */
long httpversion; /* when non-zero, a specific HTTP version requested to
be used in the library's request(s) */
char *auth_host; /* if set, this is the allocated string to the host name
* to which to send the authorization data to, and no other
* host (which location-following otherwise could lead to)
*/
char *krb4_level; /* what security level */
struct ssl_config_data ssl; /* user defined SSL stuff */
curl_proxytype proxytype; /* what kind of proxy that is in use */
int dns_cache_timeout; /* DNS cache timeout */
long buffer_size; /* size of receive buffer to use */
char *private; /* Private data */
struct curl_slist *http200aliases; /* linked list of aliases for http200 */
/* Here follows boolean settings that define how to behave during
this session. They are STATIC, set by libcurl users or at least initially
and they don't change during operations. */
bool get_filetime;
bool tunnel_thru_httpproxy;
bool ftp_append;
bool ftp_ascii;
bool ftp_list_only;
bool ftp_use_port;
bool hide_progress;
bool http_fail_on_error;
bool http_follow_location;
bool http_disable_hostname_check_before_authentication;
bool include_header;
#define http_include_header include_header /* former name */
bool http_set_referer;
bool http_auto_referer; /* set "correct" referer when following location: */
bool no_body;
bool set_port;
bool upload;
enum CURL_NETRC_OPTION
use_netrc; /* defined in include/curl.h */
bool verbose;
bool krb4; /* kerberos4 connection requested */
bool reuse_forbid; /* forbidden to be reused, close after use */
bool reuse_fresh; /* do not re-use an existing connection */
bool expect100header; /* TRUE if we added Expect: 100-continue */
bool ftp_use_epsv; /* if EPSV is to be attempted or not */
bool ftp_use_eprt; /* if EPRT is to be attempted or not */
bool no_signal; /* do not use any signal/alarm handler */
bool global_dns_cache;
};
/*
* In August 2001, this struct was redesigned and is since stricter than
* before. The 'connectdata' struct MUST have all the connection oriented
* stuff as we may now have several simultaneous connections and connection
* structs in memory.
*
* From now on, the 'SessionHandle' must only contain data that is set once to
* go for many (perhaps) independent connections. Values that are generated or
* calculated internally for the "session handle" must be defined within the
* 'struct urlstate' instead. */
struct SessionHandle {
curl_hash *hostcache;
struct Curl_share *share; /* Share, handles global variable mutexing */
struct UserDefined set; /* values set by the libcurl user */
struct DynamicStatic change; /* possibly modified userdefined data */
struct CookieInfo *cookies; /* the cookies, read from files and servers */
struct Progress progress; /* for all the progress meter data */
struct UrlState state; /* struct for fields used for state info and
other dynamic purposes */
struct PureInfo info; /* stats, reports and info data */
#if defined(USE_SSLEAY) && defined(HAVE_OPENSSL_ENGINE_H)
ENGINE* engine;
#endif /* USE_SSLEAY */
};
#define LIBCURL_NAME "libcurl"
#endif
|