1 #ifndef __CURL_CURL_H
2 #define __CURL_CURL_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
11  *
12  * This software is licensed as described in the file COPYING, which
13  * you should have received as part of this distribution. The terms
14  * are also available at http://curl.haxx.se/docs/copyright.html.
15  *
16  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17  * copies of the Software, and permit persons to whom the Software is
18  * furnished to do so, under the terms of the COPYING file.
19  *
20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21  * KIND, either express or implied.
22  *
23  * $Id: curl.h,v 1.396 2009-10-16 13:30:31 yangtse Exp $
24  ***************************************************************************/
25 
26 /*
27  * If you have libcurl problems, all docs and details are found here:
28  *   http://curl.haxx.se/libcurl/
29  *
30  * curl-library mailing list subscription and unsubscription web interface:
31  *   http://cool.haxx.se/mailman/listinfo/curl-library/
32  */
33 
34 /*
35  * Leading 'curl' path on the 'curlbuild.h' include statement is
36  * required to properly allow building outside of the source tree,
37  * due to the fact that in this case 'curlbuild.h' is generated in
38  * a subdirectory of the build tree while 'curl.h actually remains
39  * in a subdirectory of the source tree.
40  */
41 
42 #include "third_party/curl/curlver.h"         /* libcurl version defines   */
43 #include "third_party/curl/curlbuild.h"       /* libcurl build definitions */
44 #include "third_party/curl/curlrules.h"       /* libcurl rules enforcement */
45 
46 /*
47  * Define WIN32 when build target is Win32 API
48  */
49 
50 #if (defined(_WIN32) || defined(__WIN32__)) && \
51      !defined(WIN32) && !defined(__SYMBIAN32__)
52 #define WIN32
53 #endif
54 
55 #include <stdio.h>
56 #include <limits.h>
57 
58 /* The include stuff here below is mainly for time_t! */
59 #include <sys/types.h>
60 #include <time.h>
61 
62 #if defined(WIN32) && !defined(_WIN32_WCE) && !defined(__GNUC__) && \
63   !defined(__CYGWIN__) || defined(__MINGW32__)
64 #if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H))
65 /* The check above prevents the winsock2 inclusion if winsock.h already was
66    included, since they can't co-exist without problems */
67 #include <winsock2.h>
68 #include <ws2tcpip.h>
69 #endif
70 #else
71 
72 /* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
73    libc5-based Linux systems. Only include it on system that are known to
74    require it! */
75 #if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
76     defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) || \
77     defined(ANDROID)
78 #include <sys/select.h>
79 #endif
80 
81 #ifndef _WIN32_WCE
82 #include <sys/socket.h>
83 #endif
84 #if !defined(WIN32) && !defined(__WATCOMC__) && !defined(__VXWORKS__)
85 #include <sys/time.h>
86 #endif
87 #include <sys/types.h>
88 #endif
89 
90 #ifdef __BEOS__
91 #include <support/SupportDefs.h>
92 #endif
93 
94 #ifdef  __cplusplus
95 extern "C" {
96 #endif
97 
98 typedef void CURL;
99 
100 /*
101  * Decorate exportable functions for Win32 and Symbian OS DLL linking.
102  * This avoids using a .def file for building libcurl.dll.
103  */
104 #if (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)) && \
105      !defined(CURL_STATICLIB)
106 #if defined(BUILDING_LIBCURL)
107 #define CURL_EXTERN  __declspec(dllexport)
108 #else
109 #define CURL_EXTERN  __declspec(dllimport)
110 #endif
111 #else
112 
113 #ifdef CURL_HIDDEN_SYMBOLS
114 /*
115  * This definition is used to make external definitions visible in the
116  * shared library when symbols are hidden by default.  It makes no
117  * difference when compiling applications whether this is set or not,
118  * only when compiling the library.
119  */
120 #define CURL_EXTERN CURL_EXTERN_SYMBOL
121 #else
122 #define CURL_EXTERN
123 #endif
124 #endif
125 
126 #ifndef curl_socket_typedef
127 /* socket typedef */
128 #ifdef WIN32
129 typedef SOCKET curl_socket_t;
130 #define CURL_SOCKET_BAD INVALID_SOCKET
131 #else
132 typedef int curl_socket_t;
133 #define CURL_SOCKET_BAD -1
134 #endif
135 #define curl_socket_typedef
136 #endif /* curl_socket_typedef */
137 
138 struct curl_httppost {
139   struct curl_httppost *next;       /* next entry in the list */
140   char *name;                       /* pointer to allocated name */
141   long namelength;                  /* length of name length */
142   char *contents;                   /* pointer to allocated data contents */
143   long contentslength;              /* length of contents field */
144   char *buffer;                     /* pointer to allocated buffer contents */
145   long bufferlength;                /* length of buffer field */
146   char *contenttype;                /* Content-Type */
147   struct curl_slist* contentheader; /* list of extra headers for this form */
148   struct curl_httppost *more;       /* if one field name has more than one
149                                        file, this link should link to following
150                                        files */
151   long flags;                       /* as defined below */
152 #define HTTPPOST_FILENAME (1<<0)    /* specified content is a file name */
153 #define HTTPPOST_READFILE (1<<1)    /* specified content is a file name */
154 #define HTTPPOST_PTRNAME (1<<2)     /* name is only stored pointer
155                                        do not free in formfree */
156 #define HTTPPOST_PTRCONTENTS (1<<3) /* contents is only stored pointer
157                                        do not free in formfree */
158 #define HTTPPOST_BUFFER (1<<4)      /* upload file from buffer */
159 #define HTTPPOST_PTRBUFFER (1<<5)   /* upload file from pointer contents */
160 #define HTTPPOST_CALLBACK (1<<6)    /* upload file contents by using the
161                                        regular read callback to get the data
162                                        and pass the given pointer as custom
163                                        pointer */
164 
165   char *showfilename;               /* The file name to show. If not set, the
166                                        actual file name will be used (if this
167                                        is a file part) */
168   void *userp;                      /* custom pointer used for
169                                        HTTPPOST_CALLBACK posts */
170 };
171 
172 typedef int (*curl_progress_callback)(void *clientp,
173                                       double dltotal,
174                                       double dlnow,
175                                       double ultotal,
176                                       double ulnow);
177 
178 #ifndef CURL_MAX_WRITE_SIZE
179   /* Tests have proven that 20K is a very bad buffer size for uploads on
180      Windows, while 16K for some odd reason performed a lot better.
181      We do the ifndef check to allow this value to easier be changed at build
182      time for those who feel adventurous. */
183 #define CURL_MAX_WRITE_SIZE 16384
184 #endif
185 
186 #ifndef CURL_MAX_HTTP_HEADER
187 /* The only reason to have a max limit for this is to avoid the risk of a bad
188    server feeding libcurl with a never-ending header that will cause reallocs
189    infinitely */
190 #define CURL_MAX_HTTP_HEADER (100*1024)
191 #endif
192 
193 
194 /* This is a magic return code for the write callback that, when returned,
195    will signal libcurl to pause receiving on the current transfer. */
196 #define CURL_WRITEFUNC_PAUSE 0x10000001
197 typedef size_t (*curl_write_callback)(char *buffer,
198                                       size_t size,
199                                       size_t nitems,
200                                       void *outstream);
201 
202 /* These are the return codes for the seek callbacks */
203 #define CURL_SEEKFUNC_OK       0
204 #define CURL_SEEKFUNC_FAIL     1 /* fail the entire transfer */
205 #define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking can't be done, so
206                                     libcurl might try other means instead */
207 typedef int (*curl_seek_callback)(void *instream,
208                                   curl_off_t offset,
209                                   int origin); /* 'whence' */
210 
211 /* This is a return code for the read callback that, when returned, will
212    signal libcurl to immediately abort the current transfer. */
213 #define CURL_READFUNC_ABORT 0x10000000
214 /* This is a return code for the read callback that, when returned, will
215    signal libcurl to pause sending data on the current transfer. */
216 #define CURL_READFUNC_PAUSE 0x10000001
217 
218 typedef size_t (*curl_read_callback)(char *buffer,
219                                       size_t size,
220                                       size_t nitems,
221                                       void *instream);
222 
223 typedef enum  {
224   CURLSOCKTYPE_IPCXN, /* socket created for a specific IP connection */
225   CURLSOCKTYPE_LAST   /* never use */
226 } curlsocktype;
227 
228 typedef int (*curl_sockopt_callback)(void *clientp,
229                                      curl_socket_t curlfd,
230                                      curlsocktype purpose);
231 
232 struct curl_sockaddr {
233   int family;
234   int socktype;
235   int protocol;
236   unsigned int addrlen; /* addrlen was a socklen_t type before 7.18.0 but it
237                            turned really ugly and painful on the systems that
238                            lack this type */
239   struct sockaddr addr;
240 };
241 
242 typedef curl_socket_t
243 (*curl_opensocket_callback)(void *clientp,
244                             curlsocktype purpose,
245                             struct curl_sockaddr *address);
246 
247 #ifndef CURL_NO_OLDIES
248   /* not used since 7.10.8, will be removed in a future release */
249 typedef int (*curl_passwd_callback)(void *clientp,
250                                     const char *prompt,
251                                     char *buffer,
252                                     int buflen);
253 #endif
254 
255 typedef enum {
256   CURLIOE_OK,            /* I/O operation successful */
257   CURLIOE_UNKNOWNCMD,    /* command was unknown to callback */
258   CURLIOE_FAILRESTART,   /* failed to restart the read */
259   CURLIOE_LAST           /* never use */
260 } curlioerr;
261 
262 typedef enum  {
263   CURLIOCMD_NOP,         /* no operation */
264   CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
265   CURLIOCMD_LAST         /* never use */
266 } curliocmd;
267 
268 typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
269                                          int cmd,
270                                          void *clientp);
271 
272 /*
273  * The following typedef's are signatures of malloc, free, realloc, strdup and
274  * calloc respectively.  Function pointers of these types can be passed to the
275  * curl_global_init_mem() function to set user defined memory management
276  * callback routines.
277  */
278 typedef void *(*curl_malloc_callback)(size_t size);
279 typedef void (*curl_free_callback)(void *ptr);
280 typedef void *(*curl_realloc_callback)(void *ptr, size_t size);
281 typedef char *(*curl_strdup_callback)(const char *str);
282 typedef void *(*curl_calloc_callback)(size_t nmemb, size_t size);
283 
284 /* the kind of data that is passed to information_callback*/
285 typedef enum {
286   CURLINFO_TEXT = 0,
287   CURLINFO_HEADER_IN,    /* 1 */
288   CURLINFO_HEADER_OUT,   /* 2 */
289   CURLINFO_DATA_IN,      /* 3 */
290   CURLINFO_DATA_OUT,     /* 4 */
291   CURLINFO_SSL_DATA_IN,  /* 5 */
292   CURLINFO_SSL_DATA_OUT, /* 6 */
293   CURLINFO_END
294 } curl_infotype;
295 
296 typedef int (*curl_debug_callback)
297        (CURL *handle,      /* the handle/transfer this concerns */
298         curl_infotype type, /* what kind of data */
299         char *data,        /* points to the data */
300         size_t size,       /* size of the data pointed to */
301         void *userptr);    /* whatever the user please */
302 
303 /* All possible error codes from all sorts of curl functions. Future versions
304    may return other values, stay prepared.
305 
306    Always add new return codes last. Never *EVER* remove any. The return
307    codes must remain the same!
308  */
309 
310 typedef enum {
311   CURLE_OK = 0,
312   CURLE_UNSUPPORTED_PROTOCOL,    /* 1 */
313   CURLE_FAILED_INIT,             /* 2 */
314   CURLE_URL_MALFORMAT,           /* 3 */
315   CURLE_OBSOLETE4,               /* 4 - NOT USED */
316   CURLE_COULDNT_RESOLVE_PROXY,   /* 5 */
317   CURLE_COULDNT_RESOLVE_HOST,    /* 6 */
318   CURLE_COULDNT_CONNECT,         /* 7 */
319   CURLE_FTP_WEIRD_SERVER_REPLY,  /* 8 */
320   CURLE_REMOTE_ACCESS_DENIED,    /* 9 a service was denied by the server
321                                     due to lack of access - when login fails
322                                     this is not returned. */
323   CURLE_OBSOLETE10,              /* 10 - NOT USED */
324   CURLE_FTP_WEIRD_PASS_REPLY,    /* 11 */
325   CURLE_OBSOLETE12,              /* 12 - NOT USED */
326   CURLE_FTP_WEIRD_PASV_REPLY,    /* 13 */
327   CURLE_FTP_WEIRD_227_FORMAT,    /* 14 */
328   CURLE_FTP_CANT_GET_HOST,       /* 15 */
329   CURLE_OBSOLETE16,              /* 16 - NOT USED */
330   CURLE_FTP_COULDNT_SET_TYPE,    /* 17 */
331   CURLE_PARTIAL_FILE,            /* 18 */
332   CURLE_FTP_COULDNT_RETR_FILE,   /* 19 */
333   CURLE_OBSOLETE20,              /* 20 - NOT USED */
334   CURLE_QUOTE_ERROR,             /* 21 - quote command failure */
335   CURLE_HTTP_RETURNED_ERROR,     /* 22 */
336   CURLE_WRITE_ERROR,             /* 23 */
337   CURLE_OBSOLETE24,              /* 24 - NOT USED */
338   CURLE_UPLOAD_FAILED,           /* 25 - failed upload "command" */
339   CURLE_READ_ERROR,              /* 26 - couldn't open/read from file */
340   CURLE_OUT_OF_MEMORY,           /* 27 */
341   /* Note: CURLE_OUT_OF_MEMORY may sometimes indicate a conversion error
342            instead of a memory allocation error if CURL_DOES_CONVERSIONS
343            is defined
344   */
345   CURLE_OPERATION_TIMEDOUT,      /* 28 - the timeout time was reached */
346   CURLE_OBSOLETE29,              /* 29 - NOT USED */
347   CURLE_FTP_PORT_FAILED,         /* 30 - FTP PORT operation failed */
348   CURLE_FTP_COULDNT_USE_REST,    /* 31 - the REST command failed */
349   CURLE_OBSOLETE32,              /* 32 - NOT USED */
350   CURLE_RANGE_ERROR,             /* 33 - RANGE "command" didn't work */
351   CURLE_HTTP_POST_ERROR,         /* 34 */
352   CURLE_SSL_CONNECT_ERROR,       /* 35 - wrong when connecting with SSL */
353   CURLE_BAD_DOWNLOAD_RESUME,     /* 36 - couldn't resume download */
354   CURLE_FILE_COULDNT_READ_FILE,  /* 37 */
355   CURLE_LDAP_CANNOT_BIND,        /* 38 */
356   CURLE_LDAP_SEARCH_FAILED,      /* 39 */
357   CURLE_OBSOLETE40,              /* 40 - NOT USED */
358   CURLE_FUNCTION_NOT_FOUND,      /* 41 */
359   CURLE_ABORTED_BY_CALLBACK,     /* 42 */
360   CURLE_BAD_FUNCTION_ARGUMENT,   /* 43 */
361   CURLE_OBSOLETE44,              /* 44 - NOT USED */
362   CURLE_INTERFACE_FAILED,        /* 45 - CURLOPT_INTERFACE failed */
363   CURLE_OBSOLETE46,              /* 46 - NOT USED */
364   CURLE_TOO_MANY_REDIRECTS ,     /* 47 - catch endless re-direct loops */
365   CURLE_UNKNOWN_TELNET_OPTION,   /* 48 - User specified an unknown option */
366   CURLE_TELNET_OPTION_SYNTAX ,   /* 49 - Malformed telnet option */
367   CURLE_OBSOLETE50,              /* 50 - NOT USED */
368   CURLE_PEER_FAILED_VERIFICATION, /* 51 - peer's certificate or fingerprint
369                                      wasn't verified fine */
370   CURLE_GOT_NOTHING,             /* 52 - when this is a specific error */
371   CURLE_SSL_ENGINE_NOTFOUND,     /* 53 - SSL crypto engine not found */
372   CURLE_SSL_ENGINE_SETFAILED,    /* 54 - can not set SSL crypto engine as
373                                     default */
374   CURLE_SEND_ERROR,              /* 55 - failed sending network data */
375   CURLE_RECV_ERROR,              /* 56 - failure in receiving network data */
376   CURLE_OBSOLETE57,              /* 57 - NOT IN USE */
377   CURLE_SSL_CERTPROBLEM,         /* 58 - problem with the local certificate */
378   CURLE_SSL_CIPHER,              /* 59 - couldn't use specified cipher */
379   CURLE_SSL_CACERT,              /* 60 - problem with the CA cert (path?) */
380   CURLE_BAD_CONTENT_ENCODING,    /* 61 - Unrecognized transfer encoding */
381   CURLE_LDAP_INVALID_URL,        /* 62 - Invalid LDAP URL */
382   CURLE_FILESIZE_EXCEEDED,       /* 63 - Maximum file size exceeded */
383   CURLE_USE_SSL_FAILED,          /* 64 - Requested FTP SSL level failed */
384   CURLE_SEND_FAIL_REWIND,        /* 65 - Sending the data requires a rewind
385                                     that failed */
386   CURLE_SSL_ENGINE_INITFAILED,   /* 66 - failed to initialise ENGINE */
387   CURLE_LOGIN_DENIED,            /* 67 - user, password or similar was not
388                                     accepted and we failed to login */
389   CURLE_TFTP_NOTFOUND,           /* 68 - file not found on server */
390   CURLE_TFTP_PERM,               /* 69 - permission problem on server */
391   CURLE_REMOTE_DISK_FULL,        /* 70 - out of disk space on server */
392   CURLE_TFTP_ILLEGAL,            /* 71 - Illegal TFTP operation */
393   CURLE_TFTP_UNKNOWNID,          /* 72 - Unknown transfer ID */
394   CURLE_REMOTE_FILE_EXISTS,      /* 73 - File already exists */
395   CURLE_TFTP_NOSUCHUSER,         /* 74 - No such user */
396   CURLE_CONV_FAILED,             /* 75 - conversion failed */
397   CURLE_CONV_REQD,               /* 76 - caller must register conversion
398                                     callbacks using curl_easy_setopt options
399                                     CURLOPT_CONV_FROM_NETWORK_FUNCTION,
400                                     CURLOPT_CONV_TO_NETWORK_FUNCTION, and
401                                     CURLOPT_CONV_FROM_UTF8_FUNCTION */
402   CURLE_SSL_CACERT_BADFILE,      /* 77 - could not load CACERT file, missing
403                                     or wrong format */
404   CURLE_REMOTE_FILE_NOT_FOUND,   /* 78 - remote file not found */
405   CURLE_SSH,                     /* 79 - error from the SSH layer, somewhat
406                                     generic so the error message will be of
407                                     interest when this has happened */
408 
409   CURLE_SSL_SHUTDOWN_FAILED,     /* 80 - Failed to shut down the SSL
410                                     connection */
411   CURLE_AGAIN,                   /* 81 - socket is not ready for send/recv,
412                                     wait till it's ready and try again (Added
413                                     in 7.18.2) */
414   CURLE_SSL_CRL_BADFILE,         /* 82 - could not load CRL file, missing or
415                                     wrong format (Added in 7.19.0) */
416   CURLE_SSL_ISSUER_ERROR,        /* 83 - Issuer check failed.  (Added in
417                                     7.19.0) */
418   CURL_LAST /* never use! */
419 } CURLcode;
420 
421 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
422                           the obsolete stuff removed! */
423 
424 /* Backwards compatibility with older names */
425 
426 /* The following were added in 7.17.1 */
427 /* These are scheduled to disappear by 2009 */
428 #define CURLE_SSL_PEER_CERTIFICATE CURLE_PEER_FAILED_VERIFICATION
429 
430 /* The following were added in 7.17.0 */
431 /* These are scheduled to disappear by 2009 */
432 #define CURLE_OBSOLETE CURLE_OBSOLETE50 /* noone should be using this! */
433 #define CURLE_BAD_PASSWORD_ENTERED CURLE_OBSOLETE46
434 #define CURLE_BAD_CALLING_ORDER CURLE_OBSOLETE44
435 #define CURLE_FTP_USER_PASSWORD_INCORRECT CURLE_OBSOLETE10
436 #define CURLE_FTP_CANT_RECONNECT CURLE_OBSOLETE16
437 #define CURLE_FTP_COULDNT_GET_SIZE CURLE_OBSOLETE32
438 #define CURLE_FTP_COULDNT_SET_ASCII CURLE_OBSOLETE29
439 #define CURLE_FTP_WEIRD_USER_REPLY CURLE_OBSOLETE12
440 #define CURLE_FTP_WRITE_ERROR CURLE_OBSOLETE20
441 #define CURLE_LIBRARY_NOT_FOUND CURLE_OBSOLETE40
442 #define CURLE_MALFORMAT_USER CURLE_OBSOLETE24
443 #define CURLE_SHARE_IN_USE CURLE_OBSOLETE57
444 #define CURLE_URL_MALFORMAT_USER CURLE_OBSOLETE4
445 
446 #define CURLE_FTP_ACCESS_DENIED CURLE_REMOTE_ACCESS_DENIED
447 #define CURLE_FTP_COULDNT_SET_BINARY CURLE_FTP_COULDNT_SET_TYPE
448 #define CURLE_FTP_QUOTE_ERROR CURLE_QUOTE_ERROR
449 #define CURLE_TFTP_DISKFULL CURLE_REMOTE_DISK_FULL
450 #define CURLE_TFTP_EXISTS CURLE_REMOTE_FILE_EXISTS
451 #define CURLE_HTTP_RANGE_ERROR CURLE_RANGE_ERROR
452 #define CURLE_FTP_SSL_FAILED CURLE_USE_SSL_FAILED
453 
454 /* The following were added earlier */
455 
456 #define CURLE_OPERATION_TIMEOUTED CURLE_OPERATION_TIMEDOUT
457 
458 #define CURLE_HTTP_NOT_FOUND CURLE_HTTP_RETURNED_ERROR
459 #define CURLE_HTTP_PORT_FAILED CURLE_INTERFACE_FAILED
460 #define CURLE_FTP_COULDNT_STOR_FILE CURLE_UPLOAD_FAILED
461 
462 #define CURLE_FTP_PARTIAL_FILE CURLE_PARTIAL_FILE
463 #define CURLE_FTP_BAD_DOWNLOAD_RESUME CURLE_BAD_DOWNLOAD_RESUME
464 
465 /* This was the error code 50 in 7.7.3 and a few earlier versions, this
466    is no longer used by libcurl but is instead #defined here only to not
467    make programs break */
468 #define CURLE_ALREADY_COMPLETE 99999
469 
470 #endif /*!CURL_NO_OLDIES*/
471 
472 /* This prototype applies to all conversion callbacks */
473 typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
474 
475 typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl,    /* easy handle */
476                                           void *ssl_ctx, /* actually an
477                                                             OpenSSL SSL_CTX */
478                                           void *userptr);
479 
480 typedef enum {
481   CURLPROXY_HTTP = 0,   /* added in 7.10, new in 7.19.4 default is to use
482                            CONNECT HTTP/1.1 */
483   CURLPROXY_HTTP_1_0 = 1,   /* added in 7.19.4, force to use CONNECT
484                                HTTP/1.0  */
485   CURLPROXY_SOCKS4 = 4, /* support added in 7.15.2, enum existed already
486                            in 7.10 */
487   CURLPROXY_SOCKS5 = 5, /* added in 7.10 */
488   CURLPROXY_SOCKS4A = 6, /* added in 7.18.0 */
489   CURLPROXY_SOCKS5_HOSTNAME = 7 /* Use the SOCKS5 protocol but pass along the
490                                    host name rather than the IP address. added
491                                    in 7.18.0 */
492 } curl_proxytype;  /* this enum was added in 7.10 */
493 
494 #define CURLAUTH_NONE         0       /* nothing */
495 #define CURLAUTH_BASIC        (1<<0)  /* Basic (default) */
496 #define CURLAUTH_DIGEST       (1<<1)  /* Digest */
497 #define CURLAUTH_GSSNEGOTIATE (1<<2)  /* GSS-Negotiate */
498 #define CURLAUTH_NTLM         (1<<3)  /* NTLM */
499 #define CURLAUTH_DIGEST_IE    (1<<4)  /* Digest with IE flavour */
500 #define CURLAUTH_ANY (~CURLAUTH_DIGEST_IE)  /* all fine types set */
501 #define CURLAUTH_ANYSAFE (~(CURLAUTH_BASIC|CURLAUTH_DIGEST_IE))
502 
503 #define CURLSSH_AUTH_ANY       ~0     /* all types supported by the server */
504 #define CURLSSH_AUTH_NONE      0      /* none allowed, silly but complete */
505 #define CURLSSH_AUTH_PUBLICKEY (1<<0) /* public/private key files */
506 #define CURLSSH_AUTH_PASSWORD  (1<<1) /* password */
507 #define CURLSSH_AUTH_HOST      (1<<2) /* host key files */
508 #define CURLSSH_AUTH_KEYBOARD  (1<<3) /* keyboard interactive */
509 #define CURLSSH_AUTH_DEFAULT CURLSSH_AUTH_ANY
510 
511 #define CURL_ERROR_SIZE 256
512 
513 struct curl_khkey {
514   const char *key; /* points to a zero-terminated string encoded with base64
515                       if len is zero, otherwise to the "raw" data */
516   size_t len;
517   enum type {
518     CURLKHTYPE_UNKNOWN,
519     CURLKHTYPE_RSA1,
520     CURLKHTYPE_RSA,
521     CURLKHTYPE_DSS
522   } keytype;
523 };
524 
525 /* this is the set of return values expected from the curl_sshkeycallback
526    callback */
527 enum curl_khstat {
528   CURLKHSTAT_FINE_ADD_TO_FILE,
529   CURLKHSTAT_FINE,
530   CURLKHSTAT_REJECT, /* reject the connection, return an error */
531   CURLKHSTAT_DEFER,  /* do not accept it, but we can't answer right now so
532                         this causes a CURLE_DEFER error but otherwise the
533                         connection will be left intact etc */
534   CURLKHSTAT_LAST    /* not for use, only a marker for last-in-list */
535 };
536 
537 /* this is the set of status codes pass in to the callback */
538 enum curl_khmatch {
539   CURLKHMATCH_OK,       /* match */
540   CURLKHMATCH_MISMATCH, /* host found, key mismatch! */
541   CURLKHMATCH_MISSING,  /* no matching host/key found */
542   CURLKHMATCH_LAST      /* not for use, only a marker for last-in-list */
543 };
544 
545 typedef int
546   (*curl_sshkeycallback) (CURL *easy,     /* easy handle */
547                           const struct curl_khkey *knownkey, /* known */
548                           const struct curl_khkey *foundkey, /* found */
549                           enum curl_khmatch, /* libcurl's view on the keys */
550                           void *clientp); /* custom pointer passed from app */
551 
552 /* parameter for the CURLOPT_USE_SSL option */
553 typedef enum {
554   CURLUSESSL_NONE,    /* do not attempt to use SSL */
555   CURLUSESSL_TRY,     /* try using SSL, proceed anyway otherwise */
556   CURLUSESSL_CONTROL, /* SSL for the control connection or fail */
557   CURLUSESSL_ALL,     /* SSL for all communication or fail */
558   CURLUSESSL_LAST     /* not an option, never use */
559 } curl_usessl;
560 
561 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
562                           the obsolete stuff removed! */
563 
564 /* Backwards compatibility with older names */
565 /* These are scheduled to disappear by 2009 */
566 
567 #define CURLFTPSSL_NONE CURLUSESSL_NONE
568 #define CURLFTPSSL_TRY CURLUSESSL_TRY
569 #define CURLFTPSSL_CONTROL CURLUSESSL_CONTROL
570 #define CURLFTPSSL_ALL CURLUSESSL_ALL
571 #define CURLFTPSSL_LAST CURLUSESSL_LAST
572 #define curl_ftpssl curl_usessl
573 #endif /*!CURL_NO_OLDIES*/
574 
575 /* parameter for the CURLOPT_FTP_SSL_CCC option */
576 typedef enum {
577   CURLFTPSSL_CCC_NONE,    /* do not send CCC */
578   CURLFTPSSL_CCC_PASSIVE, /* Let the server initiate the shutdown */
579   CURLFTPSSL_CCC_ACTIVE,  /* Initiate the shutdown */
580   CURLFTPSSL_CCC_LAST     /* not an option, never use */
581 } curl_ftpccc;
582 
583 /* parameter for the CURLOPT_FTPSSLAUTH option */
584 typedef enum {
585   CURLFTPAUTH_DEFAULT, /* let libcurl decide */
586   CURLFTPAUTH_SSL,     /* use "AUTH SSL" */
587   CURLFTPAUTH_TLS,     /* use "AUTH TLS" */
588   CURLFTPAUTH_LAST /* not an option, never use */
589 } curl_ftpauth;
590 
591 /* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
592 typedef enum {
593   CURLFTP_CREATE_DIR_NONE,  /* do NOT create missing dirs! */
594   CURLFTP_CREATE_DIR,       /* (FTP/SFTP) if CWD fails, try MKD and then CWD
595                                again if MKD succeeded, for SFTP this does
596                                similar magic */
597   CURLFTP_CREATE_DIR_RETRY, /* (FTP only) if CWD fails, try MKD and then CWD
598                                again even if MKD failed! */
599   CURLFTP_CREATE_DIR_LAST   /* not an option, never use */
600 } curl_ftpcreatedir;
601 
602 /* parameter for the CURLOPT_FTP_FILEMETHOD option */
603 typedef enum {
604   CURLFTPMETHOD_DEFAULT,   /* let libcurl pick */
605   CURLFTPMETHOD_MULTICWD,  /* single CWD operation for each path part */
606   CURLFTPMETHOD_NOCWD,     /* no CWD at all */
607   CURLFTPMETHOD_SINGLECWD, /* one CWD to full dir, then work on file */
608   CURLFTPMETHOD_LAST       /* not an option, never use */
609 } curl_ftpmethod;
610 
611 /* CURLPROTO_ defines are for the CURLOPT_*PROTOCOLS options */
612 #define CURLPROTO_HTTP   (1<<0)
613 #define CURLPROTO_HTTPS  (1<<1)
614 #define CURLPROTO_FTP    (1<<2)
615 #define CURLPROTO_FTPS   (1<<3)
616 #define CURLPROTO_SCP    (1<<4)
617 #define CURLPROTO_SFTP   (1<<5)
618 #define CURLPROTO_TELNET (1<<6)
619 #define CURLPROTO_LDAP   (1<<7)
620 #define CURLPROTO_LDAPS  (1<<8)
621 #define CURLPROTO_DICT   (1<<9)
622 #define CURLPROTO_FILE   (1<<10)
623 #define CURLPROTO_TFTP   (1<<11)
624 #define CURLPROTO_ALL    (~0) /* enable everything */
625 
626 /* long may be 32 or 64 bits, but we should never depend on anything else
627    but 32 */
628 #define CURLOPTTYPE_LONG          0
629 #define CURLOPTTYPE_OBJECTPOINT   10000
630 #define CURLOPTTYPE_FUNCTIONPOINT 20000
631 #define CURLOPTTYPE_OFF_T         30000
632 
633 /* name is uppercase CURLOPT_<name>,
634    type is one of the defined CURLOPTTYPE_<type>
635    number is unique identifier */
636 #ifdef CINIT
637 #undef CINIT
638 #endif
639 
640 #ifdef CURL_ISOCPP
641 #define CINIT(name,type,number) CURLOPT_ ## name = CURLOPTTYPE_ ## type + number
642 #else
643 /* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */
644 #define LONG          CURLOPTTYPE_LONG
645 #define OBJECTPOINT   CURLOPTTYPE_OBJECTPOINT
646 #define FUNCTIONPOINT CURLOPTTYPE_FUNCTIONPOINT
647 #define OFF_T         CURLOPTTYPE_OFF_T
648 #define CINIT(name,type,number) CURLOPT_/**/name = type + number
649 #endif
650 
651 /*
652  * This macro-mania below setups the CURLOPT_[what] enum, to be used with
653  * curl_easy_setopt(). The first argument in the CINIT() macro is the [what]
654  * word.
655  */
656 
657 typedef enum {
658   /* This is the FILE * or void * the regular output should be written to. */
659   CINIT(FILE, OBJECTPOINT, 1),
660 
661   /* The full URL to get/put */
662   CINIT(URL,  OBJECTPOINT, 2),
663 
664   /* Port number to connect to, if other than default. */
665   CINIT(PORT, LONG, 3),
666 
667   /* Name of proxy to use. */
668   CINIT(PROXY, OBJECTPOINT, 4),
669 
670   /* "name:password" to use when fetching. */
671   CINIT(USERPWD, OBJECTPOINT, 5),
672 
673   /* "name:password" to use with proxy. */
674   CINIT(PROXYUSERPWD, OBJECTPOINT, 6),
675 
676   /* Range to get, specified as an ASCII string. */
677   CINIT(RANGE, OBJECTPOINT, 7),
678 
679   /* not used */
680 
681   /* Specified file stream to upload from (use as input): */
682   CINIT(INFILE, OBJECTPOINT, 9),
683 
684   /* Buffer to receive error messages in, must be at least CURL_ERROR_SIZE
685    * bytes big. If this is not used, error messages go to stderr instead: */
686   CINIT(ERRORBUFFER, OBJECTPOINT, 10),
687 
688   /* Function that will be called to store the output (instead of fwrite). The
689    * parameters will use fwrite() syntax, make sure to follow them. */
690   CINIT(WRITEFUNCTION, FUNCTIONPOINT, 11),
691 
692   /* Function that will be called to read the input (instead of fread). The
693    * parameters will use fread() syntax, make sure to follow them. */
694   CINIT(READFUNCTION, FUNCTIONPOINT, 12),
695 
696   /* Time-out the read operation after this amount of seconds */
697   CINIT(TIMEOUT, LONG, 13),
698 
699   /* If the CURLOPT_INFILE is used, this can be used to inform libcurl about
700    * how large the file being sent really is. That allows better error
701    * checking and better verifies that the upload was successful. -1 means
702    * unknown size.
703    *
704    * For large file support, there is also a _LARGE version of the key
705    * which takes an off_t type, allowing platforms with larger off_t
706    * sizes to handle larger files.  See below for INFILESIZE_LARGE.
707    */
708   CINIT(INFILESIZE, LONG, 14),
709 
710   /* POST static input fields. */
711   CINIT(POSTFIELDS, OBJECTPOINT, 15),
712 
713   /* Set the referrer page (needed by some CGIs) */
714   CINIT(REFERER, OBJECTPOINT, 16),
715 
716   /* Set the FTP PORT string (interface name, named or numerical IP address)
717      Use i.e '-' to use default address. */
718   CINIT(FTPPORT, OBJECTPOINT, 17),
719 
720   /* Set the User-Agent string (examined by some CGIs) */
721   CINIT(USERAGENT, OBJECTPOINT, 18),
722 
723   /* If the download receives less than "low speed limit" bytes/second
724    * during "low speed time" seconds, the operations is aborted.
725    * You could i.e if you have a pretty high speed connection, abort if
726    * it is less than 2000 bytes/sec during 20 seconds.
727    */
728 
729   /* Set the "low speed limit" */
730   CINIT(LOW_SPEED_LIMIT, LONG, 19),
731 
732   /* Set the "low speed time" */
733   CINIT(LOW_SPEED_TIME, LONG, 20),
734 
735   /* Set the continuation offset.
736    *
737    * Note there is also a _LARGE version of this key which uses
738    * off_t types, allowing for large file offsets on platforms which
739    * use larger-than-32-bit off_t's.  Look below for RESUME_FROM_LARGE.
740    */
741   CINIT(RESUME_FROM, LONG, 21),
742 
743   /* Set cookie in request: */
744   CINIT(COOKIE, OBJECTPOINT, 22),
745 
746   /* This points to a linked list of headers, struct curl_slist kind */
747   CINIT(HTTPHEADER, OBJECTPOINT, 23),
748 
749   /* This points to a linked list of post entries, struct curl_httppost */
750   CINIT(HTTPPOST, OBJECTPOINT, 24),
751 
752   /* name of the file keeping your private SSL-certificate */
753   CINIT(SSLCERT, OBJECTPOINT, 25),
754 
755   /* password for the SSL or SSH private key */
756   CINIT(KEYPASSWD, OBJECTPOINT, 26),
757 
758   /* send TYPE parameter? */
759   CINIT(CRLF, LONG, 27),
760 
761   /* send linked-list of QUOTE commands */
762   CINIT(QUOTE, OBJECTPOINT, 28),
763 
764   /* send FILE * or void * to store headers to, if you use a callback it
765      is simply passed to the callback unmodified */
766   CINIT(WRITEHEADER, OBJECTPOINT, 29),
767 
768   /* point to a file to read the initial cookies from, also enables
769      "cookie awareness" */
770   CINIT(COOKIEFILE, OBJECTPOINT, 31),
771 
772   /* What version to specifically try to use.
773      See CURL_SSLVERSION defines below. */
774   CINIT(SSLVERSION, LONG, 32),
775 
776   /* What kind of HTTP time condition to use, see defines */
777   CINIT(TIMECONDITION, LONG, 33),
778 
779   /* Time to use with the above condition. Specified in number of seconds
780      since 1 Jan 1970 */
781   CINIT(TIMEVALUE, LONG, 34),
782 
783   /* 35 = OBSOLETE */
784 
785   /* Custom request, for customizing the get command like
786      HTTP: DELETE, TRACE and others
787      FTP: to use a different list command
788      */
789   CINIT(CUSTOMREQUEST, OBJECTPOINT, 36),
790 
791   /* HTTP request, for odd commands like DELETE, TRACE and others */
792   CINIT(STDERR, OBJECTPOINT, 37),
793 
794   /* 38 is not used */
795 
796   /* send linked-list of post-transfer QUOTE commands */
797   CINIT(POSTQUOTE, OBJECTPOINT, 39),
798 
799   /* Pass a pointer to string of the output using full variable-replacement
800      as described elsewhere. */
801   CINIT(WRITEINFO, OBJECTPOINT, 40),
802 
803   CINIT(VERBOSE, LONG, 41),      /* talk a lot */
804   CINIT(HEADER, LONG, 42),       /* throw the header out too */
805   CINIT(NOPROGRESS, LONG, 43),   /* shut off the progress meter */
806   CINIT(NOBODY, LONG, 44),       /* use HEAD to get http document */
807   CINIT(FAILONERROR, LONG, 45),  /* no output on http error codes >= 300 */
808   CINIT(UPLOAD, LONG, 46),       /* this is an upload */
809   CINIT(POST, LONG, 47),         /* HTTP POST method */
810   CINIT(DIRLISTONLY, LONG, 48),  /* return bare names when listing directories */
811 
812   CINIT(APPEND, LONG, 50),       /* Append instead of overwrite on upload! */
813 
814   /* Specify whether to read the user+password from the .netrc or the URL.
815    * This must be one of the CURL_NETRC_* enums below. */
816   CINIT(NETRC, LONG, 51),
817 
818   CINIT(FOLLOWLOCATION, LONG, 52),  /* use Location: Luke! */
819 
820   CINIT(TRANSFERTEXT, LONG, 53), /* transfer data in text/ASCII format */
821   CINIT(PUT, LONG, 54),          /* HTTP PUT */
822 
823   /* 55 = OBSOLETE */
824 
825   /* Function that will be called instead of the internal progress display
826    * function. This function should be defined as the curl_progress_callback
827    * prototype defines. */
828   CINIT(PROGRESSFUNCTION, FUNCTIONPOINT, 56),
829 
830   /* Data passed to the progress callback */
831   CINIT(PROGRESSDATA, OBJECTPOINT, 57),
832 
833   /* We want the referrer field set automatically when following locations */
834   CINIT(AUTOREFERER, LONG, 58),
835 
836   /* Port of the proxy, can be set in the proxy string as well with:
837      "[host]:[port]" */
838   CINIT(PROXYPORT, LONG, 59),
839 
840   /* size of the POST input data, if strlen() is not good to use */
841   CINIT(POSTFIELDSIZE, LONG, 60),
842 
843   /* tunnel non-http operations through a HTTP proxy */
844   CINIT(HTTPPROXYTUNNEL, LONG, 61),
845 
846   /* Set the interface string to use as outgoing network interface */
847   CINIT(INTERFACE, OBJECTPOINT, 62),
848 
849   /* Set the krb4/5 security level, this also enables krb4/5 awareness.  This
850    * is a string, 'clear', 'safe', 'confidential' or 'private'.  If the string
851    * is set but doesn't match one of these, 'private' will be used.  */
852   CINIT(KRBLEVEL, OBJECTPOINT, 63),
853 
854   /* Set if we should verify the peer in ssl handshake, set 1 to verify. */
855   CINIT(SSL_VERIFYPEER, LONG, 64),
856 
857   /* The CApath or CAfile used to validate the peer certificate
858      this option is used only if SSL_VERIFYPEER is true */
859   CINIT(CAINFO, OBJECTPOINT, 65),
860 
861   /* 66 = OBSOLETE */
862   /* 67 = OBSOLETE */
863 
864   /* Maximum number of http redirects to follow */
865   CINIT(MAXREDIRS, LONG, 68),
866 
867   /* Pass a long set to 1 to get the date of the requested document (if
868      possible)! Pass a zero to shut it off. */
869   CINIT(FILETIME, LONG, 69),
870 
871   /* This points to a linked list of telnet options */
872   CINIT(TELNETOPTIONS, OBJECTPOINT, 70),
873 
874   /* Max amount of cached alive connections */
875   CINIT(MAXCONNECTS, LONG, 71),
876 
877   /* What policy to use when closing connections when the cache is filled
878      up */
879   CINIT(CLOSEPOLICY, LONG, 72),
880 
881   /* 73 = OBSOLETE */
882 
883   /* Set to explicitly use a new connection for the upcoming transfer.
884      Do not use this unless you're absolutely sure of this, as it makes the
885      operation slower and is less friendly for the network. */
886   CINIT(FRESH_CONNECT, LONG, 74),
887 
888   /* Set to explicitly forbid the upcoming transfer's connection to be re-used
889      when done. Do not use this unless you're absolutely sure of this, as it
890      makes the operation slower and is less friendly for the network. */
891   CINIT(FORBID_REUSE, LONG, 75),
892 
893   /* Set to a file name that contains random data for libcurl to use to
894      seed the random engine when doing SSL connects. */
895   CINIT(RANDOM_FILE, OBJECTPOINT, 76),
896 
897   /* Set to the Entropy Gathering Daemon socket pathname */
898   CINIT(EGDSOCKET, OBJECTPOINT, 77),
899 
900   /* Time-out connect operations after this amount of seconds, if connects
901      are OK within this time, then fine... This only aborts the connect
902      phase. [Only works on unix-style/SIGALRM operating systems] */
903   CINIT(CONNECTTIMEOUT, LONG, 78),
904 
905   /* Function that will be called to store headers (instead of fwrite). The
906    * parameters will use fwrite() syntax, make sure to follow them. */
907   CINIT(HEADERFUNCTION, FUNCTIONPOINT, 79),
908 
909   /* Set this to force the HTTP request to get back to GET. Only really usable
910      if POST, PUT or a custom request have been used first.
911    */
912   CINIT(HTTPGET, LONG, 80),
913 
914   /* Set if we should verify the Common name from the peer certificate in ssl
915    * handshake, set 1 to check existence, 2 to ensure that it matches the
916    * provided hostname. */
917   CINIT(SSL_VERIFYHOST, LONG, 81),
918 
919   /* Specify which file name to write all known cookies in after completed
920      operation. Set file name to "-" (dash) to make it go to stdout. */
921   CINIT(COOKIEJAR, OBJECTPOINT, 82),
922 
923   /* Specify which SSL ciphers to use */
924   CINIT(SSL_CIPHER_LIST, OBJECTPOINT, 83),
925 
926   /* Specify which HTTP version to use! This must be set to one of the
927      CURL_HTTP_VERSION* enums set below. */
928   CINIT(HTTP_VERSION, LONG, 84),
929 
930   /* Specifically switch on or off the FTP engine's use of the EPSV command. By
931      default, that one will always be attempted before the more traditional
932      PASV command. */
933   CINIT(FTP_USE_EPSV, LONG, 85),
934 
935   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") */
936   CINIT(SSLCERTTYPE, OBJECTPOINT, 86),
937 
938   /* name of the file keeping your private SSL-key */
939   CINIT(SSLKEY, OBJECTPOINT, 87),
940 
941   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") */
942   CINIT(SSLKEYTYPE, OBJECTPOINT, 88),
943 
944   /* crypto engine for the SSL-sub system */
945   CINIT(SSLENGINE, OBJECTPOINT, 89),
946 
947   /* set the crypto engine for the SSL-sub system as default
948      the param has no meaning...
949    */
950   CINIT(SSLENGINE_DEFAULT, LONG, 90),
951 
952   /* Non-zero value means to use the global dns cache */
953   CINIT(DNS_USE_GLOBAL_CACHE, LONG, 91), /* To become OBSOLETE soon */
954 
955   /* DNS cache timeout */
956   CINIT(DNS_CACHE_TIMEOUT, LONG, 92),
957 
958   /* send linked-list of pre-transfer QUOTE commands */
959   CINIT(PREQUOTE, OBJECTPOINT, 93),
960 
961   /* set the debug function */
962   CINIT(DEBUGFUNCTION, FUNCTIONPOINT, 94),
963 
964   /* set the data for the debug function */
965   CINIT(DEBUGDATA, OBJECTPOINT, 95),
966 
967   /* mark this as start of a cookie session */
968   CINIT(COOKIESESSION, LONG, 96),
969 
970   /* The CApath directory used to validate the peer certificate
971      this option is used only if SSL_VERIFYPEER is true */
972   CINIT(CAPATH, OBJECTPOINT, 97),
973 
974   /* Instruct libcurl to use a smaller receive buffer */
975   CINIT(BUFFERSIZE, LONG, 98),
976 
977   /* Instruct libcurl to not use any signal/alarm handlers, even when using
978      timeouts. This option is useful for multi-threaded applications.
979      See libcurl-the-guide for more background information. */
980   CINIT(NOSIGNAL, LONG, 99),
981 
982   /* Provide a CURLShare for mutexing non-ts data */
983   CINIT(SHARE, OBJECTPOINT, 100),
984 
985   /* indicates type of proxy. accepted values are CURLPROXY_HTTP (default),
986      CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and CURLPROXY_SOCKS5. */
987   CINIT(PROXYTYPE, LONG, 101),
988 
989   /* Set the Accept-Encoding string. Use this to tell a server you would like
990      the response to be compressed. */
991   CINIT(ENCODING, OBJECTPOINT, 102),
992 
993   /* Set pointer to private data */
994   CINIT(PRIVATE, OBJECTPOINT, 103),
995 
996   /* Set aliases for HTTP 200 in the HTTP Response header */
997   CINIT(HTTP200ALIASES, OBJECTPOINT, 104),
998 
999   /* Continue to send authentication (user+password) when following locations,
1000      even when hostname changed. This can potentially send off the name
1001      and password to whatever host the server decides. */
1002   CINIT(UNRESTRICTED_AUTH, LONG, 105),
1003 
1004   /* Specifically switch on or off the FTP engine's use of the EPRT command ( it
1005      also disables the LPRT attempt). By default, those ones will always be
1006      attempted before the good old traditional PORT command. */
1007   CINIT(FTP_USE_EPRT, LONG, 106),
1008 
1009   /* Set this to a bitmask value to enable the particular authentications
1010      methods you like. Use this in combination with CURLOPT_USERPWD.
1011      Note that setting multiple bits may cause extra network round-trips. */
1012   CINIT(HTTPAUTH, LONG, 107),
1013 
1014   /* Set the ssl context callback function, currently only for OpenSSL ssl_ctx
1015      in second argument. The function must be matching the
1016      curl_ssl_ctx_callback proto. */
1017   CINIT(SSL_CTX_FUNCTION, FUNCTIONPOINT, 108),
1018 
1019   /* Set the userdata for the ssl context callback function's third
1020      argument */
1021   CINIT(SSL_CTX_DATA, OBJECTPOINT, 109),
1022 
1023   /* FTP Option that causes missing dirs to be created on the remote server.
1024      In 7.19.4 we introduced the convenience enums for this option using the
1025      CURLFTP_CREATE_DIR prefix.
1026   */
1027   CINIT(FTP_CREATE_MISSING_DIRS, LONG, 110),
1028 
1029   /* Set this to a bitmask value to enable the particular authentications
1030      methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
1031      Note that setting multiple bits may cause extra network round-trips. */
1032   CINIT(PROXYAUTH, LONG, 111),
1033 
1034   /* FTP option that changes the timeout, in seconds, associated with
1035      getting a response.  This is different from transfer timeout time and
1036      essentially places a demand on the FTP server to acknowledge commands
1037      in a timely manner. */
1038   CINIT(FTP_RESPONSE_TIMEOUT, LONG, 112),
1039 
1040   /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
1041      tell libcurl to resolve names to those IP versions only. This only has
1042      affect on systems with support for more than one, i.e IPv4 _and_ IPv6. */
1043   CINIT(IPRESOLVE, LONG, 113),
1044 
1045   /* Set this option to limit the size of a file that will be downloaded from
1046      an HTTP or FTP server.
1047 
1048      Note there is also _LARGE version which adds large file support for
1049      platforms which have larger off_t sizes.  See MAXFILESIZE_LARGE below. */
1050   CINIT(MAXFILESIZE, LONG, 114),
1051 
1052   /* See the comment for INFILESIZE above, but in short, specifies
1053    * the size of the file being uploaded.  -1 means unknown.
1054    */
1055   CINIT(INFILESIZE_LARGE, OFF_T, 115),
1056 
1057   /* Sets the continuation offset.  There is also a LONG version of this;
1058    * look above for RESUME_FROM.
1059    */
1060   CINIT(RESUME_FROM_LARGE, OFF_T, 116),
1061 
1062   /* Sets the maximum size of data that will be downloaded from
1063    * an HTTP or FTP server.  See MAXFILESIZE above for the LONG version.
1064    */
1065   CINIT(MAXFILESIZE_LARGE, OFF_T, 117),
1066 
1067   /* Set this option to the file name of your .netrc file you want libcurl
1068      to parse (using the CURLOPT_NETRC option). If not set, libcurl will do
1069      a poor attempt to find the user's home directory and check for a .netrc
1070      file in there. */
1071   CINIT(NETRC_FILE, OBJECTPOINT, 118),
1072 
1073   /* Enable SSL/TLS for FTP, pick one of:
1074      CURLFTPSSL_TRY     - try using SSL, proceed anyway otherwise
1075      CURLFTPSSL_CONTROL - SSL for the control connection or fail
1076      CURLFTPSSL_ALL     - SSL for all communication or fail
1077   */
1078   CINIT(USE_SSL, LONG, 119),
1079 
1080   /* The _LARGE version of the standard POSTFIELDSIZE option */
1081   CINIT(POSTFIELDSIZE_LARGE, OFF_T, 120),
1082 
1083   /* Enable/disable the TCP Nagle algorithm */
1084   CINIT(TCP_NODELAY, LONG, 121),
1085 
1086   /* 122 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1087   /* 123 OBSOLETE. Gone in 7.16.0 */
1088   /* 124 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1089   /* 125 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1090   /* 126 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1091   /* 127 OBSOLETE. Gone in 7.16.0 */
1092   /* 128 OBSOLETE. Gone in 7.16.0 */
1093 
1094   /* When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option
1095      can be used to change libcurl's default action which is to first try
1096      "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK
1097      response has been received.
1098 
1099      Available parameters are:
1100      CURLFTPAUTH_DEFAULT - let libcurl decide
1101      CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
1102      CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
1103   */
1104   CINIT(FTPSSLAUTH, LONG, 129),
1105 
1106   CINIT(IOCTLFUNCTION, FUNCTIONPOINT, 130),
1107   CINIT(IOCTLDATA, OBJECTPOINT, 131),
1108 
1109   /* 132 OBSOLETE. Gone in 7.16.0 */
1110   /* 133 OBSOLETE. Gone in 7.16.0 */
1111 
1112   /* zero terminated string for pass on to the FTP server when asked for
1113      "account" info */
1114   CINIT(FTP_ACCOUNT, OBJECTPOINT, 134),
1115 
1116   /* feed cookies into cookie engine */
1117   CINIT(COOKIELIST, OBJECTPOINT, 135),
1118 
1119   /* ignore Content-Length */
1120   CINIT(IGNORE_CONTENT_LENGTH, LONG, 136),
1121 
1122   /* Set to non-zero to skip the IP address received in a 227 PASV FTP server
1123      response. Typically used for FTP-SSL purposes but is not restricted to
1124      that. libcurl will then instead use the same IP address it used for the
1125      control connection. */
1126   CINIT(FTP_SKIP_PASV_IP, LONG, 137),
1127 
1128   /* Select "file method" to use when doing FTP, see the curl_ftpmethod
1129      above. */
1130   CINIT(FTP_FILEMETHOD, LONG, 138),
1131 
1132   /* Local port number to bind the socket to */
1133   CINIT(LOCALPORT, LONG, 139),
1134 
1135   /* Number of ports to try, including the first one set with LOCALPORT.
1136      Thus, setting it to 1 will make no additional attempts but the first.
1137   */
1138   CINIT(LOCALPORTRANGE, LONG, 140),
1139 
1140   /* no transfer, set up connection and let application use the socket by
1141      extracting it with CURLINFO_LASTSOCKET */
1142   CINIT(CONNECT_ONLY, LONG, 141),
1143 
1144   /* Function that will be called to convert from the
1145      network encoding (instead of using the iconv calls in libcurl) */
1146   CINIT(CONV_FROM_NETWORK_FUNCTION, FUNCTIONPOINT, 142),
1147 
1148   /* Function that will be called to convert to the
1149      network encoding (instead of using the iconv calls in libcurl) */
1150   CINIT(CONV_TO_NETWORK_FUNCTION, FUNCTIONPOINT, 143),
1151 
1152   /* Function that will be called to convert from UTF8
1153      (instead of using the iconv calls in libcurl)
1154      Note that this is used only for SSL certificate processing */
1155   CINIT(CONV_FROM_UTF8_FUNCTION, FUNCTIONPOINT, 144),
1156 
1157   /* if the connection proceeds too quickly then need to slow it down */
1158   /* limit-rate: maximum number of bytes per second to send or receive */
1159   CINIT(MAX_SEND_SPEED_LARGE, OFF_T, 145),
1160   CINIT(MAX_RECV_SPEED_LARGE, OFF_T, 146),
1161 
1162   /* Pointer to command string to send if USER/PASS fails. */
1163   CINIT(FTP_ALTERNATIVE_TO_USER, OBJECTPOINT, 147),
1164 
1165   /* callback function for setting socket options */
1166   CINIT(SOCKOPTFUNCTION, FUNCTIONPOINT, 148),
1167   CINIT(SOCKOPTDATA, OBJECTPOINT, 149),
1168 
1169   /* set to 0 to disable session ID re-use for this transfer, default is
1170      enabled (== 1) */
1171   CINIT(SSL_SESSIONID_CACHE, LONG, 150),
1172 
1173   /* allowed SSH authentication methods */
1174   CINIT(SSH_AUTH_TYPES, LONG, 151),
1175 
1176   /* Used by scp/sftp to do public/private key authentication */
1177   CINIT(SSH_PUBLIC_KEYFILE, OBJECTPOINT, 152),
1178   CINIT(SSH_PRIVATE_KEYFILE, OBJECTPOINT, 153),
1179 
1180   /* Send CCC (Clear Command Channel) after authentication */
1181   CINIT(FTP_SSL_CCC, LONG, 154),
1182 
1183   /* Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution */
1184   CINIT(TIMEOUT_MS, LONG, 155),
1185   CINIT(CONNECTTIMEOUT_MS, LONG, 156),
1186 
1187   /* set to zero to disable the libcurl's decoding and thus pass the raw body
1188      data to the application even when it is encoded/compressed */
1189   CINIT(HTTP_TRANSFER_DECODING, LONG, 157),
1190   CINIT(HTTP_CONTENT_DECODING, LONG, 158),
1191 
1192   /* Permission used when creating new files and directories on the remote
1193      server for protocols that support it, SFTP/SCP/FILE */
1194   CINIT(NEW_FILE_PERMS, LONG, 159),
1195   CINIT(NEW_DIRECTORY_PERMS, LONG, 160),
1196 
1197   /* Set the behaviour of POST when redirecting. Values must be set to one
1198      of CURL_REDIR* defines below. This used to be called CURLOPT_POST301 */
1199   CINIT(POSTREDIR, LONG, 161),
1200 
1201   /* used by scp/sftp to verify the host's public key */
1202   CINIT(SSH_HOST_PUBLIC_KEY_MD5, OBJECTPOINT, 162),
1203 
1204   /* Callback function for opening socket (instead of socket(2)). Optionally,
1205      callback is able change the address or refuse to connect returning
1206      CURL_SOCKET_BAD.  The callback should have type
1207      curl_opensocket_callback */
1208   CINIT(OPENSOCKETFUNCTION, FUNCTIONPOINT, 163),
1209   CINIT(OPENSOCKETDATA, OBJECTPOINT, 164),
1210 
1211   /* POST volatile input fields. */
1212   CINIT(COPYPOSTFIELDS, OBJECTPOINT, 165),
1213 
1214   /* set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy */
1215   CINIT(PROXY_TRANSFER_MODE, LONG, 166),
1216 
1217   /* Callback function for seeking in the input stream */
1218   CINIT(SEEKFUNCTION, FUNCTIONPOINT, 167),
1219   CINIT(SEEKDATA, OBJECTPOINT, 168),
1220 
1221   /* CRL file */
1222   CINIT(CRLFILE, OBJECTPOINT, 169),
1223 
1224   /* Issuer certificate */
1225   CINIT(ISSUERCERT, OBJECTPOINT, 170),
1226 
1227   /* (IPv6) Address scope */
1228   CINIT(ADDRESS_SCOPE, LONG, 171),
1229 
1230   /* Collect certificate chain info and allow it to get retrievable with
1231      CURLINFO_CERTINFO after the transfer is complete. (Unfortunately) only
1232      working with OpenSSL-powered builds. */
1233   CINIT(CERTINFO, LONG, 172),
1234 
1235   /* "name" and "pwd" to use when fetching. */
1236   CINIT(USERNAME, OBJECTPOINT, 173),
1237   CINIT(PASSWORD, OBJECTPOINT, 174),
1238 
1239     /* "name" and "pwd" to use with Proxy when fetching. */
1240   CINIT(PROXYUSERNAME, OBJECTPOINT, 175),
1241   CINIT(PROXYPASSWORD, OBJECTPOINT, 176),
1242 
1243   /* Comma separated list of hostnames defining no-proxy zones. These should
1244      match both hostnames directly, and hostnames within a domain. For
1245      example, local.com will match local.com and www.local.com, but NOT
1246      notlocal.com or www.notlocal.com. For compatibility with other
1247      implementations of this, .local.com will be considered to be the same as
1248      local.com. A single * is the only valid wildcard, and effectively
1249      disables the use of proxy. */
1250   CINIT(NOPROXY, OBJECTPOINT, 177),
1251 
1252   /* block size for TFTP transfers */
1253   CINIT(TFTP_BLKSIZE, LONG, 178),
1254 
1255   /* Socks Service */
1256   CINIT(SOCKS5_GSSAPI_SERVICE, OBJECTPOINT, 179),
1257 
1258   /* Socks Service */
1259   CINIT(SOCKS5_GSSAPI_NEC, LONG, 180),
1260 
1261   /* set the bitmask for the protocols that are allowed to be used for the
1262      transfer, which thus helps the app which takes URLs from users or other
1263      external inputs and want to restrict what protocol(s) to deal
1264      with. Defaults to CURLPROTO_ALL. */
1265   CINIT(PROTOCOLS, LONG, 181),
1266 
1267   /* set the bitmask for the protocols that libcurl is allowed to follow to,
1268      as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
1269      to be set in both bitmasks to be allowed to get redirected to. Defaults
1270      to all protocols except FILE and SCP. */
1271   CINIT(REDIR_PROTOCOLS, LONG, 182),
1272 
1273   /* set the SSH knownhost file name to use */
1274   CINIT(SSH_KNOWNHOSTS, OBJECTPOINT, 183),
1275 
1276   /* set the SSH host key callback, must point to a curl_sshkeycallback
1277      function */
1278   CINIT(SSH_KEYFUNCTION, FUNCTIONPOINT, 184),
1279 
1280   /* set the SSH host key callback custom pointer */
1281   CINIT(SSH_KEYDATA, OBJECTPOINT, 185),
1282 
1283   CURLOPT_LASTENTRY /* the last unused */
1284 } CURLoption;
1285 
1286 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
1287                           the obsolete stuff removed! */
1288 
1289 /* Backwards compatibility with older names */
1290 /* These are scheduled to disappear by 2011 */
1291 
1292 /* This was added in version 7.19.1 */
1293 #define CURLOPT_POST301 CURLOPT_POSTREDIR
1294 
1295 /* These are scheduled to disappear by 2009 */
1296 
1297 /* The following were added in 7.17.0 */
1298 #define CURLOPT_SSLKEYPASSWD CURLOPT_KEYPASSWD
1299 #define CURLOPT_FTPAPPEND CURLOPT_APPEND
1300 #define CURLOPT_FTPLISTONLY CURLOPT_DIRLISTONLY
1301 #define CURLOPT_FTP_SSL CURLOPT_USE_SSL
1302 
1303 /* The following were added earlier */
1304 
1305 #define CURLOPT_SSLCERTPASSWD CURLOPT_KEYPASSWD
1306 #define CURLOPT_KRB4LEVEL CURLOPT_KRBLEVEL
1307 
1308 #else
1309 /* This is set if CURL_NO_OLDIES is defined at compile-time */
1310 #undef CURLOPT_DNS_USE_GLOBAL_CACHE /* soon obsolete */
1311 #endif
1312 
1313 
1314   /* Below here follows defines for the CURLOPT_IPRESOLVE option. If a host
1315      name resolves addresses using more than one IP protocol version, this
1316      option might be handy to force libcurl to use a specific IP version. */
1317 #define CURL_IPRESOLVE_WHATEVER 0 /* default, resolves addresses to all IP
1318                                      versions that your system allows */
1319 #define CURL_IPRESOLVE_V4       1 /* resolve to ipv4 addresses */
1320 #define CURL_IPRESOLVE_V6       2 /* resolve to ipv6 addresses */
1321 
1322   /* three convenient "aliases" that follow the name scheme better */
1323 #define CURLOPT_WRITEDATA CURLOPT_FILE
1324 #define CURLOPT_READDATA  CURLOPT_INFILE
1325 #define CURLOPT_HEADERDATA CURLOPT_WRITEHEADER
1326 
1327   /* These enums are for use with the CURLOPT_HTTP_VERSION option. */
1328 enum {
1329   CURL_HTTP_VERSION_NONE, /* setting this means we don't care, and that we'd
1330                              like the library to choose the best possible
1331                              for us! */
1332   CURL_HTTP_VERSION_1_0,  /* please use HTTP 1.0 in the request */
1333   CURL_HTTP_VERSION_1_1,  /* please use HTTP 1.1 in the request */
1334 
1335   CURL_HTTP_VERSION_LAST /* *ILLEGAL* http version */
1336 };
1337 
1338   /* These enums are for use with the CURLOPT_NETRC option. */
1339 enum CURL_NETRC_OPTION {
1340   CURL_NETRC_IGNORED,     /* The .netrc will never be read.
1341                            * This is the default. */
1342   CURL_NETRC_OPTIONAL,    /* A user:password in the URL will be preferred
1343                            * to one in the .netrc. */
1344   CURL_NETRC_REQUIRED,    /* A user:password in the URL will be ignored.
1345                            * Unless one is set programmatically, the .netrc
1346                            * will be queried. */
1347   CURL_NETRC_LAST
1348 };
1349 
1350 enum {
1351   CURL_SSLVERSION_DEFAULT,
1352   CURL_SSLVERSION_TLSv1,
1353   CURL_SSLVERSION_SSLv2,
1354   CURL_SSLVERSION_SSLv3,
1355 
1356   CURL_SSLVERSION_LAST /* never use, keep last */
1357 };
1358 
1359 /* symbols to use with CURLOPT_POSTREDIR.
1360    CURL_REDIR_POST_301 and CURL_REDIR_POST_302 can be bitwise ORed so that
1361    CURL_REDIR_POST_301 | CURL_REDIR_POST_302 == CURL_REDIR_POST_ALL */
1362 
1363 #define CURL_REDIR_GET_ALL  0
1364 #define CURL_REDIR_POST_301 1
1365 #define CURL_REDIR_POST_302 2
1366 #define CURL_REDIR_POST_ALL (CURL_REDIR_POST_301|CURL_REDIR_POST_302)
1367 
1368 typedef enum {
1369   CURL_TIMECOND_NONE,
1370 
1371   CURL_TIMECOND_IFMODSINCE,
1372   CURL_TIMECOND_IFUNMODSINCE,
1373   CURL_TIMECOND_LASTMOD,
1374 
1375   CURL_TIMECOND_LAST
1376 } curl_TimeCond;
1377 
1378 
1379 /* curl_strequal() and curl_strnequal() are subject for removal in a future
1380    libcurl, see lib/README.curlx for details */
1381 CURL_EXTERN int (curl_strequal)(const char *s1, const char *s2);
1382 CURL_EXTERN int (curl_strnequal)(const char *s1, const char *s2, size_t n);
1383 
1384 /* name is uppercase CURLFORM_<name> */
1385 #ifdef CFINIT
1386 #undef CFINIT
1387 #endif
1388 
1389 #ifdef CURL_ISOCPP
1390 #define CFINIT(name) CURLFORM_ ## name
1391 #else
1392 /* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */
1393 #define CFINIT(name) CURLFORM_/**/name
1394 #endif
1395 
1396 typedef enum {
1397   CFINIT(NOTHING),        /********* the first one is unused ************/
1398 
1399   /*  */
1400   CFINIT(COPYNAME),
1401   CFINIT(PTRNAME),
1402   CFINIT(NAMELENGTH),
1403   CFINIT(COPYCONTENTS),
1404   CFINIT(PTRCONTENTS),
1405   CFINIT(CONTENTSLENGTH),
1406   CFINIT(FILECONTENT),
1407   CFINIT(ARRAY),
1408   CFINIT(OBSOLETE),
1409   CFINIT(FILE),
1410 
1411   CFINIT(BUFFER),
1412   CFINIT(BUFFERPTR),
1413   CFINIT(BUFFERLENGTH),
1414 
1415   CFINIT(CONTENTTYPE),
1416   CFINIT(CONTENTHEADER),
1417   CFINIT(FILENAME),
1418   CFINIT(END),
1419   CFINIT(OBSOLETE2),
1420 
1421   CFINIT(STREAM),
1422 
1423   CURLFORM_LASTENTRY /* the last unused */
1424 } CURLformoption;
1425 
1426 #undef CFINIT /* done */
1427 
1428 /* structure to be used as parameter for CURLFORM_ARRAY */
1429 struct curl_forms {
1430   CURLformoption option;
1431   const char     *value;
1432 };
1433 
1434 /* use this for multipart formpost building */
1435 /* Returns code for curl_formadd()
1436  *
1437  * Returns:
1438  * CURL_FORMADD_OK             on success
1439  * CURL_FORMADD_MEMORY         if the FormInfo allocation fails
1440  * CURL_FORMADD_OPTION_TWICE   if one option is given twice for one Form
1441  * CURL_FORMADD_NULL           if a null pointer was given for a char
1442  * CURL_FORMADD_MEMORY         if the allocation of a FormInfo struct failed
1443  * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
1444  * CURL_FORMADD_INCOMPLETE     if the some FormInfo is not complete (or error)
1445  * CURL_FORMADD_MEMORY         if a curl_httppost struct cannot be allocated
1446  * CURL_FORMADD_MEMORY         if some allocation for string copying failed.
1447  * CURL_FORMADD_ILLEGAL_ARRAY  if an illegal option is used in an array
1448  *
1449  ***************************************************************************/
1450 typedef enum {
1451   CURL_FORMADD_OK, /* first, no error */
1452 
1453   CURL_FORMADD_MEMORY,
1454   CURL_FORMADD_OPTION_TWICE,
1455   CURL_FORMADD_NULL,
1456   CURL_FORMADD_UNKNOWN_OPTION,
1457   CURL_FORMADD_INCOMPLETE,
1458   CURL_FORMADD_ILLEGAL_ARRAY,
1459   CURL_FORMADD_DISABLED, /* libcurl was built with this disabled */
1460 
1461   CURL_FORMADD_LAST /* last */
1462 } CURLFORMcode;
1463 
1464 /*
1465  * NAME curl_formadd()
1466  *
1467  * DESCRIPTION
1468  *
1469  * Pretty advanced function for building multi-part formposts. Each invoke
1470  * adds one part that together construct a full post. Then use
1471  * CURLOPT_HTTPPOST to send it off to libcurl.
1472  */
1473 CURL_EXTERN CURLFORMcode curl_formadd(struct curl_httppost **httppost,
1474                                       struct curl_httppost **last_post,
1475                                       ...);
1476 
1477 /*
1478  * callback function for curl_formget()
1479  * The void *arg pointer will be the one passed as second argument to
1480  *   curl_formget().
1481  * The character buffer passed to it must not be freed.
1482  * Should return the buffer length passed to it as the argument "len" on
1483  *   success.
1484  */
1485 typedef size_t (*curl_formget_callback)(void *arg, const char *buf, size_t len);
1486 
1487 /*
1488  * NAME curl_formget()
1489  *
1490  * DESCRIPTION
1491  *
1492  * Serialize a curl_httppost struct built with curl_formadd().
1493  * Accepts a void pointer as second argument which will be passed to
1494  * the curl_formget_callback function.
1495  * Returns 0 on success.
1496  */
1497 CURL_EXTERN int curl_formget(struct curl_httppost *form, void *arg,
1498                              curl_formget_callback append);
1499 /*
1500  * NAME curl_formfree()
1501  *
1502  * DESCRIPTION
1503  *
1504  * Free a multipart formpost previously built with curl_formadd().
1505  */
1506 CURL_EXTERN void curl_formfree(struct curl_httppost *form);
1507 
1508 /*
1509  * NAME curl_getenv()
1510  *
1511  * DESCRIPTION
1512  *
1513  * Returns a malloc()'ed string that MUST be curl_free()ed after usage is
1514  * complete. DEPRECATED - see lib/README.curlx
1515  */
1516 CURL_EXTERN char *curl_getenv(const char *variable);
1517 
1518 /*
1519  * NAME curl_version()
1520  *
1521  * DESCRIPTION
1522  *
1523  * Returns a static ascii string of the libcurl version.
1524  */
1525 CURL_EXTERN char *curl_version(void);
1526 
1527 /*
1528  * NAME curl_easy_escape()
1529  *
1530  * DESCRIPTION
1531  *
1532  * Escapes URL strings (converts all letters consider illegal in URLs to their
1533  * %XX versions). This function returns a new allocated string or NULL if an
1534  * error occurred.
1535  */
1536 CURL_EXTERN char *curl_easy_escape(CURL *handle,
1537                                    const char *string,
1538                                    int length);
1539 
1540 /* the previous version: */
1541 CURL_EXTERN char *curl_escape(const char *string,
1542                               int length);
1543 
1544 
1545 /*
1546  * NAME curl_easy_unescape()
1547  *
1548  * DESCRIPTION
1549  *
1550  * Unescapes URL encoding in strings (converts all %XX codes to their 8bit
1551  * versions). This function returns a new allocated string or NULL if an error
1552  * occurred.
1553  * Conversion Note: On non-ASCII platforms the ASCII %XX codes are
1554  * converted into the host encoding.
1555  */
1556 CURL_EXTERN char *curl_easy_unescape(CURL *handle,
1557                                      const char *string,
1558                                      int length,
1559                                      int *outlength);
1560 
1561 /* the previous version */
1562 CURL_EXTERN char *curl_unescape(const char *string,
1563                                 int length);
1564 
1565 /*
1566  * NAME curl_free()
1567  *
1568  * DESCRIPTION
1569  *
1570  * Provided for de-allocation in the same translation unit that did the
1571  * allocation. Added in libcurl 7.10
1572  */
1573 CURL_EXTERN void curl_free(void *p);
1574 
1575 /*
1576  * NAME curl_global_init()
1577  *
1578  * DESCRIPTION
1579  *
1580  * curl_global_init() should be invoked exactly once for each application that
1581  * uses libcurl and before any call of other libcurl functions.
1582  *
1583  * This function is not thread-safe!
1584  */
1585 CURL_EXTERN CURLcode curl_global_init(long flags);
1586 
1587 /*
1588  * NAME curl_global_init_mem()
1589  *
1590  * DESCRIPTION
1591  *
1592  * curl_global_init() or curl_global_init_mem() should be invoked exactly once
1593  * for each application that uses libcurl.  This function can be used to
1594  * initialize libcurl and set user defined memory management callback
1595  * functions.  Users can implement memory management routines to check for
1596  * memory leaks, check for mis-use of the curl library etc.  User registered
1597  * callback routines with be invoked by this library instead of the system
1598  * memory management routines like malloc, free etc.
1599  */
1600 CURL_EXTERN CURLcode curl_global_init_mem(long flags,
1601                                           curl_malloc_callback m,
1602                                           curl_free_callback f,
1603                                           curl_realloc_callback r,
1604                                           curl_strdup_callback s,
1605                                           curl_calloc_callback c);
1606 
1607 /*
1608  * NAME curl_global_cleanup()
1609  *
1610  * DESCRIPTION
1611  *
1612  * curl_global_cleanup() should be invoked exactly once for each application
1613  * that uses libcurl
1614  */
1615 CURL_EXTERN void curl_global_cleanup(void);
1616 
1617 /* linked-list structure for the CURLOPT_QUOTE option (and other) */
1618 struct curl_slist {
1619   char *data;
1620   struct curl_slist *next;
1621 };
1622 
1623 /*
1624  * NAME curl_slist_append()
1625  *
1626  * DESCRIPTION
1627  *
1628  * Appends a string to a linked list. If no list exists, it will be created
1629  * first. Returns the new list, after appending.
1630  */
1631 CURL_EXTERN struct curl_slist *curl_slist_append(struct curl_slist *,
1632                                                  const char *);
1633 
1634 /*
1635  * NAME curl_slist_free_all()
1636  *
1637  * DESCRIPTION
1638  *
1639  * free a previously built curl_slist.
1640  */
1641 CURL_EXTERN void curl_slist_free_all(struct curl_slist *);
1642 
1643 /*
1644  * NAME curl_getdate()
1645  *
1646  * DESCRIPTION
1647  *
1648  * Returns the time, in seconds since 1 Jan 1970 of the time string given in
1649  * the first argument. The time argument in the second parameter is unused
1650  * and should be set to NULL.
1651  */
1652 CURL_EXTERN time_t curl_getdate(const char *p, const time_t *unused);
1653 
1654 /* info about the certificate chain, only for OpenSSL builds. Asked
1655    for with CURLOPT_CERTINFO / CURLINFO_CERTINFO */
1656 struct curl_certinfo {
1657   int num_of_certs;             /* number of certificates with information */
1658   struct curl_slist **certinfo; /* for each index in this array, there's a
1659                                    linked list with textual information in the
1660                                    format "name: value" */
1661 };
1662 
1663 #define CURLINFO_STRING   0x100000
1664 #define CURLINFO_LONG     0x200000
1665 #define CURLINFO_DOUBLE   0x300000
1666 #define CURLINFO_SLIST    0x400000
1667 #define CURLINFO_MASK     0x0fffff
1668 #define CURLINFO_TYPEMASK 0xf00000
1669 
1670 typedef enum {
1671   CURLINFO_NONE, /* first, never use this */
1672   CURLINFO_EFFECTIVE_URL    = CURLINFO_STRING + 1,
1673   CURLINFO_RESPONSE_CODE    = CURLINFO_LONG   + 2,
1674   CURLINFO_TOTAL_TIME       = CURLINFO_DOUBLE + 3,
1675   CURLINFO_NAMELOOKUP_TIME  = CURLINFO_DOUBLE + 4,
1676   CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
1677   CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
1678   CURLINFO_SIZE_UPLOAD      = CURLINFO_DOUBLE + 7,
1679   CURLINFO_SIZE_DOWNLOAD    = CURLINFO_DOUBLE + 8,
1680   CURLINFO_SPEED_DOWNLOAD   = CURLINFO_DOUBLE + 9,
1681   CURLINFO_SPEED_UPLOAD     = CURLINFO_DOUBLE + 10,
1682   CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
1683   CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
1684   CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
1685   CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
1686   CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
1687   CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
1688   CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
1689   CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
1690   CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
1691   CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
1692   CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
1693   CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
1694   CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
1695   CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
1696   CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
1697   CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
1698   CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
1699   CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
1700   CURLINFO_LASTSOCKET       = CURLINFO_LONG   + 29,
1701   CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
1702   CURLINFO_REDIRECT_URL     = CURLINFO_STRING + 31,
1703   CURLINFO_PRIMARY_IP       = CURLINFO_STRING + 32,
1704   CURLINFO_APPCONNECT_TIME  = CURLINFO_DOUBLE + 33,
1705   CURLINFO_CERTINFO         = CURLINFO_SLIST  + 34,
1706   CURLINFO_CONDITION_UNMET  = CURLINFO_LONG   + 35,
1707   /* Fill in new entries below here! */
1708 
1709   CURLINFO_LASTONE          = 35
1710 } CURLINFO;
1711 
1712 /* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
1713    CURLINFO_HTTP_CODE */
1714 #define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE
1715 
1716 typedef enum {
1717   CURLCLOSEPOLICY_NONE, /* first, never use this */
1718 
1719   CURLCLOSEPOLICY_OLDEST,
1720   CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
1721   CURLCLOSEPOLICY_LEAST_TRAFFIC,
1722   CURLCLOSEPOLICY_SLOWEST,
1723   CURLCLOSEPOLICY_CALLBACK,
1724 
1725   CURLCLOSEPOLICY_LAST /* last, never use this */
1726 } curl_closepolicy;
1727 
1728 #define CURL_GLOBAL_SSL (1<<0)
1729 #define CURL_GLOBAL_WIN32 (1<<1)
1730 #define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
1731 #define CURL_GLOBAL_NOTHING 0
1732 #define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL
1733 
1734 
1735 /*****************************************************************************
1736  * Setup defines, protos etc for the sharing stuff.
1737  */
1738 
1739 /* Different data locks for a single share */
1740 typedef enum {
1741   CURL_LOCK_DATA_NONE = 0,
1742   /*  CURL_LOCK_DATA_SHARE is used internally to say that
1743    *  the locking is just made to change the internal state of the share
1744    *  itself.
1745    */
1746   CURL_LOCK_DATA_SHARE,
1747   CURL_LOCK_DATA_COOKIE,
1748   CURL_LOCK_DATA_DNS,
1749   CURL_LOCK_DATA_SSL_SESSION,
1750   CURL_LOCK_DATA_CONNECT,
1751   CURL_LOCK_DATA_LAST
1752 } curl_lock_data;
1753 
1754 /* Different lock access types */
1755 typedef enum {
1756   CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
1757   CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
1758   CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
1759   CURL_LOCK_ACCESS_LAST        /* never use */
1760 } curl_lock_access;
1761 
1762 typedef void (*curl_lock_function)(CURL *handle,
1763                                    curl_lock_data data,
1764                                    curl_lock_access locktype,
1765                                    void *userptr);
1766 typedef void (*curl_unlock_function)(CURL *handle,
1767                                      curl_lock_data data,
1768                                      void *userptr);
1769 
1770 typedef void CURLSH;
1771 
1772 typedef enum {
1773   CURLSHE_OK,  /* all is fine */
1774   CURLSHE_BAD_OPTION, /* 1 */
1775   CURLSHE_IN_USE,     /* 2 */
1776   CURLSHE_INVALID,    /* 3 */
1777   CURLSHE_NOMEM,      /* out of memory */
1778   CURLSHE_LAST /* never use */
1779 } CURLSHcode;
1780 
1781 typedef enum {
1782   CURLSHOPT_NONE,  /* don't use */
1783   CURLSHOPT_SHARE,   /* specify a data type to share */
1784   CURLSHOPT_UNSHARE, /* specify which data type to stop sharing */
1785   CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
1786   CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
1787   CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
1788                            callback functions */
1789   CURLSHOPT_LAST  /* never use */
1790 } CURLSHoption;
1791 
1792 CURL_EXTERN CURLSH *curl_share_init(void);
1793 CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);
1794 CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *);
1795 
1796 /****************************************************************************
1797  * Structures for querying information about the curl library at runtime.
1798  */
1799 
1800 typedef enum {
1801   CURLVERSION_FIRST,
1802   CURLVERSION_SECOND,
1803   CURLVERSION_THIRD,
1804   CURLVERSION_FOURTH,
1805   CURLVERSION_LAST /* never actually use this */
1806 } CURLversion;
1807 
1808 /* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
1809    basically all programs ever that want to get version information. It is
1810    meant to be a built-in version number for what kind of struct the caller
1811    expects. If the struct ever changes, we redefine the NOW to another enum
1812    from above. */
1813 #define CURLVERSION_NOW CURLVERSION_FOURTH
1814 
1815 typedef struct {
1816   CURLversion age;          /* age of the returned struct */
1817   const char *version;      /* LIBCURL_VERSION */
1818   unsigned int version_num; /* LIBCURL_VERSION_NUM */
1819   const char *host;         /* OS/host/cpu/machine when configured */
1820   int features;             /* bitmask, see defines below */
1821   const char *ssl_version;  /* human readable string */
1822   long ssl_version_num;     /* not used anymore, always 0 */
1823   const char *libz_version; /* human readable string */
1824   /* protocols is terminated by an entry with a NULL protoname */
1825   const char * const *protocols;
1826 
1827   /* The fields below this were added in CURLVERSION_SECOND */
1828   const char *ares;
1829   int ares_num;
1830 
1831   /* This field was added in CURLVERSION_THIRD */
1832   const char *libidn;
1833 
1834   /* These field were added in CURLVERSION_FOURTH */
1835 
1836   /* Same as '_libiconv_version' if built with HAVE_ICONV */
1837   int iconv_ver_num;
1838 
1839   const char *libssh_version; /* human readable string */
1840 
1841 } curl_version_info_data;
1842 
1843 #define CURL_VERSION_IPV6      (1<<0)  /* IPv6-enabled */
1844 #define CURL_VERSION_KERBEROS4 (1<<1)  /* kerberos auth is supported */
1845 #define CURL_VERSION_SSL       (1<<2)  /* SSL options are present */
1846 #define CURL_VERSION_LIBZ      (1<<3)  /* libz features are present */
1847 #define CURL_VERSION_NTLM      (1<<4)  /* NTLM auth is supported */
1848 #define CURL_VERSION_GSSNEGOTIATE (1<<5) /* Negotiate auth support */
1849 #define CURL_VERSION_DEBUG     (1<<6)  /* built with debug capabilities */
1850 #define CURL_VERSION_ASYNCHDNS (1<<7)  /* asynchronous dns resolves */
1851 #define CURL_VERSION_SPNEGO    (1<<8)  /* SPNEGO auth */
1852 #define CURL_VERSION_LARGEFILE (1<<9)  /* supports files bigger than 2GB */
1853 #define CURL_VERSION_IDN       (1<<10) /* International Domain Names support */
1854 #define CURL_VERSION_SSPI      (1<<11) /* SSPI is supported */
1855 #define CURL_VERSION_CONV      (1<<12) /* character conversions supported */
1856 #define CURL_VERSION_CURLDEBUG (1<<13) /* debug memory tracking supported */
1857 
1858 /*
1859  * NAME curl_version_info()
1860  *
1861  * DESCRIPTION
1862  *
1863  * This function returns a pointer to a static copy of the version info
1864  * struct. See above.
1865  */
1866 CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);
1867 
1868 /*
1869  * NAME curl_easy_strerror()
1870  *
1871  * DESCRIPTION
1872  *
1873  * The curl_easy_strerror function may be used to turn a CURLcode value
1874  * into the equivalent human readable error string.  This is useful
1875  * for printing meaningful error messages.
1876  */
1877 CURL_EXTERN const char *curl_easy_strerror(CURLcode);
1878 
1879 /*
1880  * NAME curl_share_strerror()
1881  *
1882  * DESCRIPTION
1883  *
1884  * The curl_share_strerror function may be used to turn a CURLSHcode value
1885  * into the equivalent human readable error string.  This is useful
1886  * for printing meaningful error messages.
1887  */
1888 CURL_EXTERN const char *curl_share_strerror(CURLSHcode);
1889 
1890 /*
1891  * NAME curl_easy_pause()
1892  *
1893  * DESCRIPTION
1894  *
1895  * The curl_easy_pause function pauses or unpauses transfers. Select the new
1896  * state by setting the bitmask, use the convenience defines below.
1897  *
1898  */
1899 CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
1900 
1901 #define CURLPAUSE_RECV      (1<<0)
1902 #define CURLPAUSE_RECV_CONT (0)
1903 
1904 #define CURLPAUSE_SEND      (1<<2)
1905 #define CURLPAUSE_SEND_CONT (0)
1906 
1907 #define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
1908 #define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)
1909 
1910 #ifdef  __cplusplus
1911 }
1912 #endif
1913 
1914 /* unfortunately, the easy.h and multi.h include files need options and info
1915   stuff before they can be included! */
1916 #include "easy.h" /* nothing in curl is fun without the easy stuff */
1917 #include "multi.h"
1918 
1919 /* the typechecker doesn't work in C++ (yet) */
1920 #if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
1921     ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
1922     !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
1923 #include "typecheck-gcc.h"
1924 #else
1925 #if defined(__STDC__) && (__STDC__ >= 1)
1926 /* This preprocessor magic that replaces a call with the exact same call is
1927    only done to make sure application authors pass exactly three arguments
1928    to these functions. */
1929 #define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
1930 #define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
1931 #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
1932 #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
1933 #endif /* __STDC__ >= 1 */
1934 #endif /* gcc >= 4.3 && !__cplusplus */
1935 
1936 #endif /* __CURL_CURL_H */
1937