1 #ifndef CURLINC_CURL_H
2 #define CURLINC_CURL_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 1998 - 2021, 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 https://curl.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  ***************************************************************************/
24 
25 /*
26  * If you have libcurl problems, all docs and details are found here:
27  *   https://curl.se/libcurl/
28  */
29 
30 #ifdef CURL_NO_OLDIES
31 #define CURL_STRICTER
32 #endif
33 
34 #include "curlver.h"         /* libcurl version defines   */
35 #include "system.h"          /* determine things run-time */
36 
37 /*
38  * Define CURL_WIN32 when build target is Win32 API
39  */
40 
41 #if (defined(_WIN32) || defined(__WIN32__) || defined(WIN32)) &&        \
42   !defined(__SYMBIAN32__)
43 #define CURL_WIN32
44 #endif
45 
46 #include <stdio.h>
47 #include <limits.h>
48 
49 #if defined(__FreeBSD__) && (__FreeBSD__ >= 2)
50 /* Needed for __FreeBSD_version symbol definition */
51 #include <osreldate.h>
52 #endif
53 
54 /* The include stuff here below is mainly for time_t! */
55 #include <sys/types.h>
56 #include <time.h>
57 
58 #if defined(CURL_WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
59 #if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
60       defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
61 /* The check above prevents the winsock2 inclusion if winsock.h already was
62    included, since they can't co-exist without problems */
63 #include <winsock2.h>
64 #include <ws2tcpip.h>
65 #endif
66 #endif
67 
68 /* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
69    libc5-based Linux systems. Only include it on systems that are known to
70    require it! */
71 #if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
72     defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) || \
73     defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__) || \
74     defined(__CYGWIN__) || defined(AMIGA) || defined(__NuttX__) || \
75    (defined(__FreeBSD_version) && (__FreeBSD_version < 800000)) || \
76     defined(__VXWORKS__)
77 #include <sys/select.h>
78 #endif
79 
80 #if !defined(CURL_WIN32) && !defined(_WIN32_WCE)
81 #include <sys/socket.h>
82 #endif
83 
84 #if !defined(CURL_WIN32) && !defined(__WATCOMC__) && !defined(__VXWORKS__)
85 #include <sys/time.h>
86 #endif
87 
88 #ifdef __BEOS__
89 #include <support/SupportDefs.h>
90 #endif
91 
92 /* Compatibility for non-Clang compilers */
93 #ifndef __has_declspec_attribute
94 #  define __has_declspec_attribute(x) 0
95 #endif
96 
97 #ifdef  __cplusplus
98 extern "C" {
99 #endif
100 
101 #if defined(BUILDING_LIBCURL) || defined(CURL_STRICTER)
102 typedef struct Curl_easy CURL;
103 typedef struct Curl_share CURLSH;
104 #else
105 typedef void CURL;
106 typedef void CURLSH;
107 #endif
108 
109 /*
110  * libcurl external API function linkage decorations.
111  */
112 
113 #ifdef CURL_STATICLIB
114 #  define CURL_EXTERN
115 #elif defined(CURL_WIN32) || defined(__SYMBIAN32__) || \
116      (__has_declspec_attribute(dllexport) && \
117       __has_declspec_attribute(dllimport))
118 #  if defined(BUILDING_LIBCURL)
119 #    define CURL_EXTERN  __declspec(dllexport)
120 #  else
121 #    define CURL_EXTERN  __declspec(dllimport)
122 #  endif
123 #elif defined(BUILDING_LIBCURL) && defined(CURL_HIDDEN_SYMBOLS)
124 #  define CURL_EXTERN CURL_EXTERN_SYMBOL
125 #else
126 #  define CURL_EXTERN
127 #endif
128 
129 #ifndef curl_socket_typedef
130 /* socket typedef */
131 #if defined(CURL_WIN32) && !defined(__LWIP_OPT_H__) && !defined(LWIP_HDR_OPT_H)
132 typedef SOCKET curl_socket_t;
133 #define CURL_SOCKET_BAD INVALID_SOCKET
134 #else
135 typedef int curl_socket_t;
136 #define CURL_SOCKET_BAD -1
137 #endif
138 #define curl_socket_typedef
139 #endif /* curl_socket_typedef */
140 
141 /* enum for the different supported SSL backends */
142 typedef enum {
143   CURLSSLBACKEND_NONE = 0,
144   CURLSSLBACKEND_OPENSSL = 1,
145   CURLSSLBACKEND_GNUTLS = 2,
146   CURLSSLBACKEND_NSS = 3,
147   CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
148   CURLSSLBACKEND_GSKIT = 5,
149   CURLSSLBACKEND_POLARSSL = 6,
150   CURLSSLBACKEND_WOLFSSL = 7,
151   CURLSSLBACKEND_SCHANNEL = 8,
152   CURLSSLBACKEND_SECURETRANSPORT = 9,
153   CURLSSLBACKEND_AXTLS = 10, /* never used since 7.63.0 */
154   CURLSSLBACKEND_MBEDTLS = 11,
155   CURLSSLBACKEND_MESALINK = 12,
156   CURLSSLBACKEND_BEARSSL = 13,
157   CURLSSLBACKEND_RUSTLS = 14
158 } curl_sslbackend;
159 
160 /* aliases for library clones and renames */
161 #define CURLSSLBACKEND_LIBRESSL CURLSSLBACKEND_OPENSSL
162 #define CURLSSLBACKEND_BORINGSSL CURLSSLBACKEND_OPENSSL
163 
164 /* deprecated names: */
165 #define CURLSSLBACKEND_CYASSL CURLSSLBACKEND_WOLFSSL
166 #define CURLSSLBACKEND_DARWINSSL CURLSSLBACKEND_SECURETRANSPORT
167 
168 struct curl_httppost {
169   struct curl_httppost *next;       /* next entry in the list */
170   char *name;                       /* pointer to allocated name */
171   long namelength;                  /* length of name length */
172   char *contents;                   /* pointer to allocated data contents */
173   long contentslength;              /* length of contents field, see also
174                                        CURL_HTTPPOST_LARGE */
175   char *buffer;                     /* pointer to allocated buffer contents */
176   long bufferlength;                /* length of buffer field */
177   char *contenttype;                /* Content-Type */
178   struct curl_slist *contentheader; /* list of extra headers for this form */
179   struct curl_httppost *more;       /* if one field name has more than one
180                                        file, this link should link to following
181                                        files */
182   long flags;                       /* as defined below */
183 
184 /* specified content is a file name */
185 #define CURL_HTTPPOST_FILENAME (1<<0)
186 /* specified content is a file name */
187 #define CURL_HTTPPOST_READFILE (1<<1)
188 /* name is only stored pointer do not free in formfree */
189 #define CURL_HTTPPOST_PTRNAME (1<<2)
190 /* contents is only stored pointer do not free in formfree */
191 #define CURL_HTTPPOST_PTRCONTENTS (1<<3)
192 /* upload file from buffer */
193 #define CURL_HTTPPOST_BUFFER (1<<4)
194 /* upload file from pointer contents */
195 #define CURL_HTTPPOST_PTRBUFFER (1<<5)
196 /* upload file contents by using the regular read callback to get the data and
197    pass the given pointer as custom pointer */
198 #define CURL_HTTPPOST_CALLBACK (1<<6)
199 /* use size in 'contentlen', added in 7.46.0 */
200 #define CURL_HTTPPOST_LARGE (1<<7)
201 
202   char *showfilename;               /* The file name to show. If not set, the
203                                        actual file name will be used (if this
204                                        is a file part) */
205   void *userp;                      /* custom pointer used for
206                                        HTTPPOST_CALLBACK posts */
207   curl_off_t contentlen;            /* alternative length of contents
208                                        field. Used if CURL_HTTPPOST_LARGE is
209                                        set. Added in 7.46.0 */
210 };
211 
212 
213 /* This is a return code for the progress callback that, when returned, will
214    signal libcurl to continue executing the default progress function */
215 #define CURL_PROGRESSFUNC_CONTINUE 0x10000001
216 
217 /* This is the CURLOPT_PROGRESSFUNCTION callback prototype. It is now
218    considered deprecated but was the only choice up until 7.31.0 */
219 typedef int (*curl_progress_callback)(void *clientp,
220                                       double dltotal,
221                                       double dlnow,
222                                       double ultotal,
223                                       double ulnow);
224 
225 /* This is the CURLOPT_XFERINFOFUNCTION callback prototype. It was introduced
226    in 7.32.0, avoids the use of floating point numbers and provides more
227    detailed information. */
228 typedef int (*curl_xferinfo_callback)(void *clientp,
229                                       curl_off_t dltotal,
230                                       curl_off_t dlnow,
231                                       curl_off_t ultotal,
232                                       curl_off_t ulnow);
233 
234 #ifndef CURL_MAX_READ_SIZE
235   /* The maximum receive buffer size configurable via CURLOPT_BUFFERSIZE. */
236 #define CURL_MAX_READ_SIZE 524288
237 #endif
238 
239 #ifndef CURL_MAX_WRITE_SIZE
240   /* Tests have proven that 20K is a very bad buffer size for uploads on
241      Windows, while 16K for some odd reason performed a lot better.
242      We do the ifndef check to allow this value to easier be changed at build
243      time for those who feel adventurous. The practical minimum is about
244      400 bytes since libcurl uses a buffer of this size as a scratch area
245      (unrelated to network send operations). */
246 #define CURL_MAX_WRITE_SIZE 16384
247 #endif
248 
249 #ifndef CURL_MAX_HTTP_HEADER
250 /* The only reason to have a max limit for this is to avoid the risk of a bad
251    server feeding libcurl with a never-ending header that will cause reallocs
252    infinitely */
253 #define CURL_MAX_HTTP_HEADER (100*1024)
254 #endif
255 
256 /* This is a magic return code for the write callback that, when returned,
257    will signal libcurl to pause receiving on the current transfer. */
258 #define CURL_WRITEFUNC_PAUSE 0x10000001
259 
260 typedef size_t (*curl_write_callback)(char *buffer,
261                                       size_t size,
262                                       size_t nitems,
263                                       void *outstream);
264 
265 /* This callback will be called when a new resolver request is made */
266 typedef int (*curl_resolver_start_callback)(void *resolver_state,
267                                             void *reserved, void *userdata);
268 
269 /* enumeration of file types */
270 typedef enum {
271   CURLFILETYPE_FILE = 0,
272   CURLFILETYPE_DIRECTORY,
273   CURLFILETYPE_SYMLINK,
274   CURLFILETYPE_DEVICE_BLOCK,
275   CURLFILETYPE_DEVICE_CHAR,
276   CURLFILETYPE_NAMEDPIPE,
277   CURLFILETYPE_SOCKET,
278   CURLFILETYPE_DOOR, /* is possible only on Sun Solaris now */
279 
280   CURLFILETYPE_UNKNOWN /* should never occur */
281 } curlfiletype;
282 
283 #define CURLFINFOFLAG_KNOWN_FILENAME    (1<<0)
284 #define CURLFINFOFLAG_KNOWN_FILETYPE    (1<<1)
285 #define CURLFINFOFLAG_KNOWN_TIME        (1<<2)
286 #define CURLFINFOFLAG_KNOWN_PERM        (1<<3)
287 #define CURLFINFOFLAG_KNOWN_UID         (1<<4)
288 #define CURLFINFOFLAG_KNOWN_GID         (1<<5)
289 #define CURLFINFOFLAG_KNOWN_SIZE        (1<<6)
290 #define CURLFINFOFLAG_KNOWN_HLINKCOUNT  (1<<7)
291 
292 /* Information about a single file, used when doing FTP wildcard matching */
293 struct curl_fileinfo {
294   char *filename;
295   curlfiletype filetype;
296   time_t time; /* always zero! */
297   unsigned int perm;
298   int uid;
299   int gid;
300   curl_off_t size;
301   long int hardlinks;
302 
303   struct {
304     /* If some of these fields is not NULL, it is a pointer to b_data. */
305     char *time;
306     char *perm;
307     char *user;
308     char *group;
309     char *target; /* pointer to the target filename of a symlink */
310   } strings;
311 
312   unsigned int flags;
313 
314   /* used internally */
315   char *b_data;
316   size_t b_size;
317   size_t b_used;
318 };
319 
320 /* return codes for CURLOPT_CHUNK_BGN_FUNCTION */
321 #define CURL_CHUNK_BGN_FUNC_OK      0
322 #define CURL_CHUNK_BGN_FUNC_FAIL    1 /* tell the lib to end the task */
323 #define CURL_CHUNK_BGN_FUNC_SKIP    2 /* skip this chunk over */
324 
325 /* if splitting of data transfer is enabled, this callback is called before
326    download of an individual chunk started. Note that parameter "remains" works
327    only for FTP wildcard downloading (for now), otherwise is not used */
328 typedef long (*curl_chunk_bgn_callback)(const void *transfer_info,
329                                         void *ptr,
330                                         int remains);
331 
332 /* return codes for CURLOPT_CHUNK_END_FUNCTION */
333 #define CURL_CHUNK_END_FUNC_OK      0
334 #define CURL_CHUNK_END_FUNC_FAIL    1 /* tell the lib to end the task */
335 
336 /* If splitting of data transfer is enabled this callback is called after
337    download of an individual chunk finished.
338    Note! After this callback was set then it have to be called FOR ALL chunks.
339    Even if downloading of this chunk was skipped in CHUNK_BGN_FUNC.
340    This is the reason why we don't need "transfer_info" parameter in this
341    callback and we are not interested in "remains" parameter too. */
342 typedef long (*curl_chunk_end_callback)(void *ptr);
343 
344 /* return codes for FNMATCHFUNCTION */
345 #define CURL_FNMATCHFUNC_MATCH    0 /* string corresponds to the pattern */
346 #define CURL_FNMATCHFUNC_NOMATCH  1 /* pattern doesn't match the string */
347 #define CURL_FNMATCHFUNC_FAIL     2 /* an error occurred */
348 
349 /* callback type for wildcard downloading pattern matching. If the
350    string matches the pattern, return CURL_FNMATCHFUNC_MATCH value, etc. */
351 typedef int (*curl_fnmatch_callback)(void *ptr,
352                                      const char *pattern,
353                                      const char *string);
354 
355 /* These are the return codes for the seek callbacks */
356 #define CURL_SEEKFUNC_OK       0
357 #define CURL_SEEKFUNC_FAIL     1 /* fail the entire transfer */
358 #define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking can't be done, so
359                                     libcurl might try other means instead */
360 typedef int (*curl_seek_callback)(void *instream,
361                                   curl_off_t offset,
362                                   int origin); /* 'whence' */
363 
364 /* This is a return code for the read callback that, when returned, will
365    signal libcurl to immediately abort the current transfer. */
366 #define CURL_READFUNC_ABORT 0x10000000
367 /* This is a return code for the read callback that, when returned, will
368    signal libcurl to pause sending data on the current transfer. */
369 #define CURL_READFUNC_PAUSE 0x10000001
370 
371 /* Return code for when the trailing headers' callback has terminated
372    without any errors*/
373 #define CURL_TRAILERFUNC_OK 0
374 /* Return code for when was an error in the trailing header's list and we
375   want to abort the request */
376 #define CURL_TRAILERFUNC_ABORT 1
377 
378 typedef size_t (*curl_read_callback)(char *buffer,
379                                       size_t size,
380                                       size_t nitems,
381                                       void *instream);
382 
383 typedef int (*curl_trailer_callback)(struct curl_slist **list,
384                                       void *userdata);
385 
386 typedef enum {
387   CURLSOCKTYPE_IPCXN,  /* socket created for a specific IP connection */
388   CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
389   CURLSOCKTYPE_LAST    /* never use */
390 } curlsocktype;
391 
392 /* The return code from the sockopt_callback can signal information back
393    to libcurl: */
394 #define CURL_SOCKOPT_OK 0
395 #define CURL_SOCKOPT_ERROR 1 /* causes libcurl to abort and return
396                                 CURLE_ABORTED_BY_CALLBACK */
397 #define CURL_SOCKOPT_ALREADY_CONNECTED 2
398 
399 typedef int (*curl_sockopt_callback)(void *clientp,
400                                      curl_socket_t curlfd,
401                                      curlsocktype purpose);
402 
403 struct curl_sockaddr {
404   int family;
405   int socktype;
406   int protocol;
407   unsigned int addrlen; /* addrlen was a socklen_t type before 7.18.0 but it
408                            turned really ugly and painful on the systems that
409                            lack this type */
410   struct sockaddr addr;
411 };
412 
413 typedef curl_socket_t
414 (*curl_opensocket_callback)(void *clientp,
415                             curlsocktype purpose,
416                             struct curl_sockaddr *address);
417 
418 typedef int
419 (*curl_closesocket_callback)(void *clientp, curl_socket_t item);
420 
421 typedef enum {
422   CURLIOE_OK,            /* I/O operation successful */
423   CURLIOE_UNKNOWNCMD,    /* command was unknown to callback */
424   CURLIOE_FAILRESTART,   /* failed to restart the read */
425   CURLIOE_LAST           /* never use */
426 } curlioerr;
427 
428 typedef enum {
429   CURLIOCMD_NOP,         /* no operation */
430   CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
431   CURLIOCMD_LAST         /* never use */
432 } curliocmd;
433 
434 typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
435                                          int cmd,
436                                          void *clientp);
437 
438 #ifndef CURL_DID_MEMORY_FUNC_TYPEDEFS
439 /*
440  * The following typedef's are signatures of malloc, free, realloc, strdup and
441  * calloc respectively.  Function pointers of these types can be passed to the
442  * curl_global_init_mem() function to set user defined memory management
443  * callback routines.
444  */
445 typedef void *(*curl_malloc_callback)(size_t size);
446 typedef void (*curl_free_callback)(void *ptr);
447 typedef void *(*curl_realloc_callback)(void *ptr, size_t size);
448 typedef char *(*curl_strdup_callback)(const char *str);
449 typedef void *(*curl_calloc_callback)(size_t nmemb, size_t size);
450 
451 #define CURL_DID_MEMORY_FUNC_TYPEDEFS
452 #endif
453 
454 /* the kind of data that is passed to information_callback*/
455 typedef enum {
456   CURLINFO_TEXT = 0,
457   CURLINFO_HEADER_IN,    /* 1 */
458   CURLINFO_HEADER_OUT,   /* 2 */
459   CURLINFO_DATA_IN,      /* 3 */
460   CURLINFO_DATA_OUT,     /* 4 */
461   CURLINFO_SSL_DATA_IN,  /* 5 */
462   CURLINFO_SSL_DATA_OUT, /* 6 */
463   CURLINFO_END
464 } curl_infotype;
465 
466 typedef int (*curl_debug_callback)
467        (CURL *handle,      /* the handle/transfer this concerns */
468         curl_infotype type, /* what kind of data */
469         char *data,        /* points to the data */
470         size_t size,       /* size of the data pointed to */
471         void *userptr);    /* whatever the user please */
472 
473 /* All possible error codes from all sorts of curl functions. Future versions
474    may return other values, stay prepared.
475 
476    Always add new return codes last. Never *EVER* remove any. The return
477    codes must remain the same!
478  */
479 
480 typedef enum {
481   CURLE_OK = 0,
482   CURLE_UNSUPPORTED_PROTOCOL,    /* 1 */
483   CURLE_FAILED_INIT,             /* 2 */
484   CURLE_URL_MALFORMAT,           /* 3 */
485   CURLE_NOT_BUILT_IN,            /* 4 - [was obsoleted in August 2007 for
486                                     7.17.0, reused in April 2011 for 7.21.5] */
487   CURLE_COULDNT_RESOLVE_PROXY,   /* 5 */
488   CURLE_COULDNT_RESOLVE_HOST,    /* 6 */
489   CURLE_COULDNT_CONNECT,         /* 7 */
490   CURLE_WEIRD_SERVER_REPLY,      /* 8 */
491   CURLE_REMOTE_ACCESS_DENIED,    /* 9 a service was denied by the server
492                                     due to lack of access - when login fails
493                                     this is not returned. */
494   CURLE_FTP_ACCEPT_FAILED,       /* 10 - [was obsoleted in April 2006 for
495                                     7.15.4, reused in Dec 2011 for 7.24.0]*/
496   CURLE_FTP_WEIRD_PASS_REPLY,    /* 11 */
497   CURLE_FTP_ACCEPT_TIMEOUT,      /* 12 - timeout occurred accepting server
498                                     [was obsoleted in August 2007 for 7.17.0,
499                                     reused in Dec 2011 for 7.24.0]*/
500   CURLE_FTP_WEIRD_PASV_REPLY,    /* 13 */
501   CURLE_FTP_WEIRD_227_FORMAT,    /* 14 */
502   CURLE_FTP_CANT_GET_HOST,       /* 15 */
503   CURLE_HTTP2,                   /* 16 - A problem in the http2 framing layer.
504                                     [was obsoleted in August 2007 for 7.17.0,
505                                     reused in July 2014 for 7.38.0] */
506   CURLE_FTP_COULDNT_SET_TYPE,    /* 17 */
507   CURLE_PARTIAL_FILE,            /* 18 */
508   CURLE_FTP_COULDNT_RETR_FILE,   /* 19 */
509   CURLE_OBSOLETE20,              /* 20 - NOT USED */
510   CURLE_QUOTE_ERROR,             /* 21 - quote command failure */
511   CURLE_HTTP_RETURNED_ERROR,     /* 22 */
512   CURLE_WRITE_ERROR,             /* 23 */
513   CURLE_OBSOLETE24,              /* 24 - NOT USED */
514   CURLE_UPLOAD_FAILED,           /* 25 - failed upload "command" */
515   CURLE_READ_ERROR,              /* 26 - couldn't open/read from file */
516   CURLE_OUT_OF_MEMORY,           /* 27 */
517   /* Note: CURLE_OUT_OF_MEMORY may sometimes indicate a conversion error
518            instead of a memory allocation error if CURL_DOES_CONVERSIONS
519            is defined
520   */
521   CURLE_OPERATION_TIMEDOUT,      /* 28 - the timeout time was reached */
522   CURLE_OBSOLETE29,              /* 29 - NOT USED */
523   CURLE_FTP_PORT_FAILED,         /* 30 - FTP PORT operation failed */
524   CURLE_FTP_COULDNT_USE_REST,    /* 31 - the REST command failed */
525   CURLE_OBSOLETE32,              /* 32 - NOT USED */
526   CURLE_RANGE_ERROR,             /* 33 - RANGE "command" didn't work */
527   CURLE_HTTP_POST_ERROR,         /* 34 */
528   CURLE_SSL_CONNECT_ERROR,       /* 35 - wrong when connecting with SSL */
529   CURLE_BAD_DOWNLOAD_RESUME,     /* 36 - couldn't resume download */
530   CURLE_FILE_COULDNT_READ_FILE,  /* 37 */
531   CURLE_LDAP_CANNOT_BIND,        /* 38 */
532   CURLE_LDAP_SEARCH_FAILED,      /* 39 */
533   CURLE_OBSOLETE40,              /* 40 - NOT USED */
534   CURLE_FUNCTION_NOT_FOUND,      /* 41 - NOT USED starting with 7.53.0 */
535   CURLE_ABORTED_BY_CALLBACK,     /* 42 */
536   CURLE_BAD_FUNCTION_ARGUMENT,   /* 43 */
537   CURLE_OBSOLETE44,              /* 44 - NOT USED */
538   CURLE_INTERFACE_FAILED,        /* 45 - CURLOPT_INTERFACE failed */
539   CURLE_OBSOLETE46,              /* 46 - NOT USED */
540   CURLE_TOO_MANY_REDIRECTS,      /* 47 - catch endless re-direct loops */
541   CURLE_UNKNOWN_OPTION,          /* 48 - User specified an unknown option */
542   CURLE_SETOPT_OPTION_SYNTAX,    /* 49 - Malformed setopt option */
543   CURLE_OBSOLETE50,              /* 50 - NOT USED */
544   CURLE_OBSOLETE51,              /* 51 - NOT USED */
545   CURLE_GOT_NOTHING,             /* 52 - when this is a specific error */
546   CURLE_SSL_ENGINE_NOTFOUND,     /* 53 - SSL crypto engine not found */
547   CURLE_SSL_ENGINE_SETFAILED,    /* 54 - can not set SSL crypto engine as
548                                     default */
549   CURLE_SEND_ERROR,              /* 55 - failed sending network data */
550   CURLE_RECV_ERROR,              /* 56 - failure in receiving network data */
551   CURLE_OBSOLETE57,              /* 57 - NOT IN USE */
552   CURLE_SSL_CERTPROBLEM,         /* 58 - problem with the local certificate */
553   CURLE_SSL_CIPHER,              /* 59 - couldn't use specified cipher */
554   CURLE_PEER_FAILED_VERIFICATION, /* 60 - peer's certificate or fingerprint
555                                      wasn't verified fine */
556   CURLE_BAD_CONTENT_ENCODING,    /* 61 - Unrecognized/bad encoding */
557   CURLE_LDAP_INVALID_URL,        /* 62 - Invalid LDAP URL */
558   CURLE_FILESIZE_EXCEEDED,       /* 63 - Maximum file size exceeded */
559   CURLE_USE_SSL_FAILED,          /* 64 - Requested FTP SSL level failed */
560   CURLE_SEND_FAIL_REWIND,        /* 65 - Sending the data requires a rewind
561                                     that failed */
562   CURLE_SSL_ENGINE_INITFAILED,   /* 66 - failed to initialise ENGINE */
563   CURLE_LOGIN_DENIED,            /* 67 - user, password or similar was not
564                                     accepted and we failed to login */
565   CURLE_TFTP_NOTFOUND,           /* 68 - file not found on server */
566   CURLE_TFTP_PERM,               /* 69 - permission problem on server */
567   CURLE_REMOTE_DISK_FULL,        /* 70 - out of disk space on server */
568   CURLE_TFTP_ILLEGAL,            /* 71 - Illegal TFTP operation */
569   CURLE_TFTP_UNKNOWNID,          /* 72 - Unknown transfer ID */
570   CURLE_REMOTE_FILE_EXISTS,      /* 73 - File already exists */
571   CURLE_TFTP_NOSUCHUSER,         /* 74 - No such user */
572   CURLE_CONV_FAILED,             /* 75 - conversion failed */
573   CURLE_CONV_REQD,               /* 76 - caller must register conversion
574                                     callbacks using curl_easy_setopt options
575                                     CURLOPT_CONV_FROM_NETWORK_FUNCTION,
576                                     CURLOPT_CONV_TO_NETWORK_FUNCTION, and
577                                     CURLOPT_CONV_FROM_UTF8_FUNCTION */
578   CURLE_SSL_CACERT_BADFILE,      /* 77 - could not load CACERT file, missing
579                                     or wrong format */
580   CURLE_REMOTE_FILE_NOT_FOUND,   /* 78 - remote file not found */
581   CURLE_SSH,                     /* 79 - error from the SSH layer, somewhat
582                                     generic so the error message will be of
583                                     interest when this has happened */
584 
585   CURLE_SSL_SHUTDOWN_FAILED,     /* 80 - Failed to shut down the SSL
586                                     connection */
587   CURLE_AGAIN,                   /* 81 - socket is not ready for send/recv,
588                                     wait till it's ready and try again (Added
589                                     in 7.18.2) */
590   CURLE_SSL_CRL_BADFILE,         /* 82 - could not load CRL file, missing or
591                                     wrong format (Added in 7.19.0) */
592   CURLE_SSL_ISSUER_ERROR,        /* 83 - Issuer check failed.  (Added in
593                                     7.19.0) */
594   CURLE_FTP_PRET_FAILED,         /* 84 - a PRET command failed */
595   CURLE_RTSP_CSEQ_ERROR,         /* 85 - mismatch of RTSP CSeq numbers */
596   CURLE_RTSP_SESSION_ERROR,      /* 86 - mismatch of RTSP Session Ids */
597   CURLE_FTP_BAD_FILE_LIST,       /* 87 - unable to parse FTP file list */
598   CURLE_CHUNK_FAILED,            /* 88 - chunk callback reported error */
599   CURLE_NO_CONNECTION_AVAILABLE, /* 89 - No connection available, the
600                                     session will be queued */
601   CURLE_SSL_PINNEDPUBKEYNOTMATCH, /* 90 - specified pinned public key did not
602                                      match */
603   CURLE_SSL_INVALIDCERTSTATUS,   /* 91 - invalid certificate status */
604   CURLE_HTTP2_STREAM,            /* 92 - stream error in HTTP/2 framing layer
605                                     */
606   CURLE_RECURSIVE_API_CALL,      /* 93 - an api function was called from
607                                     inside a callback */
608   CURLE_AUTH_ERROR,              /* 94 - an authentication function returned an
609                                     error */
610   CURLE_HTTP3,                   /* 95 - An HTTP/3 layer problem */
611   CURLE_QUIC_CONNECT_ERROR,      /* 96 - QUIC connection error */
612   CURLE_PROXY,                   /* 97 - proxy handshake error */
613   CURLE_SSL_CLIENTCERT,          /* 98 - client-side certificate required */
614   CURL_LAST /* never use! */
615 } CURLcode;
616 
617 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
618                           the obsolete stuff removed! */
619 
620 /* Previously obsolete error code re-used in 7.38.0 */
621 #define CURLE_OBSOLETE16 CURLE_HTTP2
622 
623 /* Previously obsolete error codes re-used in 7.24.0 */
624 #define CURLE_OBSOLETE10 CURLE_FTP_ACCEPT_FAILED
625 #define CURLE_OBSOLETE12 CURLE_FTP_ACCEPT_TIMEOUT
626 
627 /*  compatibility with older names */
628 #define CURLOPT_ENCODING CURLOPT_ACCEPT_ENCODING
629 #define CURLE_FTP_WEIRD_SERVER_REPLY CURLE_WEIRD_SERVER_REPLY
630 
631 /* The following were added in 7.62.0 */
632 #define CURLE_SSL_CACERT CURLE_PEER_FAILED_VERIFICATION
633 
634 /* The following were added in 7.21.5, April 2011 */
635 #define CURLE_UNKNOWN_TELNET_OPTION CURLE_UNKNOWN_OPTION
636 
637 /* Added for 7.78.0 */
638 #define CURLE_TELNET_OPTION_SYNTAX CURLE_SETOPT_OPTION_SYNTAX
639 
640 /* The following were added in 7.17.1 */
641 /* These are scheduled to disappear by 2009 */
642 #define CURLE_SSL_PEER_CERTIFICATE CURLE_PEER_FAILED_VERIFICATION
643 
644 /* The following were added in 7.17.0 */
645 /* These are scheduled to disappear by 2009 */
646 #define CURLE_OBSOLETE CURLE_OBSOLETE50 /* no one should be using this! */
647 #define CURLE_BAD_PASSWORD_ENTERED CURLE_OBSOLETE46
648 #define CURLE_BAD_CALLING_ORDER CURLE_OBSOLETE44
649 #define CURLE_FTP_USER_PASSWORD_INCORRECT CURLE_OBSOLETE10
650 #define CURLE_FTP_CANT_RECONNECT CURLE_OBSOLETE16
651 #define CURLE_FTP_COULDNT_GET_SIZE CURLE_OBSOLETE32
652 #define CURLE_FTP_COULDNT_SET_ASCII CURLE_OBSOLETE29
653 #define CURLE_FTP_WEIRD_USER_REPLY CURLE_OBSOLETE12
654 #define CURLE_FTP_WRITE_ERROR CURLE_OBSOLETE20
655 #define CURLE_LIBRARY_NOT_FOUND CURLE_OBSOLETE40
656 #define CURLE_MALFORMAT_USER CURLE_OBSOLETE24
657 #define CURLE_SHARE_IN_USE CURLE_OBSOLETE57
658 #define CURLE_URL_MALFORMAT_USER CURLE_NOT_BUILT_IN
659 
660 #define CURLE_FTP_ACCESS_DENIED CURLE_REMOTE_ACCESS_DENIED
661 #define CURLE_FTP_COULDNT_SET_BINARY CURLE_FTP_COULDNT_SET_TYPE
662 #define CURLE_FTP_QUOTE_ERROR CURLE_QUOTE_ERROR
663 #define CURLE_TFTP_DISKFULL CURLE_REMOTE_DISK_FULL
664 #define CURLE_TFTP_EXISTS CURLE_REMOTE_FILE_EXISTS
665 #define CURLE_HTTP_RANGE_ERROR CURLE_RANGE_ERROR
666 #define CURLE_FTP_SSL_FAILED CURLE_USE_SSL_FAILED
667 
668 /* The following were added earlier */
669 
670 #define CURLE_OPERATION_TIMEOUTED CURLE_OPERATION_TIMEDOUT
671 
672 #define CURLE_HTTP_NOT_FOUND CURLE_HTTP_RETURNED_ERROR
673 #define CURLE_HTTP_PORT_FAILED CURLE_INTERFACE_FAILED
674 #define CURLE_FTP_COULDNT_STOR_FILE CURLE_UPLOAD_FAILED
675 
676 #define CURLE_FTP_PARTIAL_FILE CURLE_PARTIAL_FILE
677 #define CURLE_FTP_BAD_DOWNLOAD_RESUME CURLE_BAD_DOWNLOAD_RESUME
678 
679 /* This was the error code 50 in 7.7.3 and a few earlier versions, this
680    is no longer used by libcurl but is instead #defined here only to not
681    make programs break */
682 #define CURLE_ALREADY_COMPLETE 99999
683 
684 /* Provide defines for really old option names */
685 #define CURLOPT_FILE CURLOPT_WRITEDATA /* name changed in 7.9.7 */
686 #define CURLOPT_INFILE CURLOPT_READDATA /* name changed in 7.9.7 */
687 #define CURLOPT_WRITEHEADER CURLOPT_HEADERDATA
688 
689 /* Since long deprecated options with no code in the lib that does anything
690    with them. */
691 #define CURLOPT_WRITEINFO CURLOPT_OBSOLETE40
692 #define CURLOPT_CLOSEPOLICY CURLOPT_OBSOLETE72
693 
694 #endif /*!CURL_NO_OLDIES*/
695 
696 /*
697  * Proxy error codes. Returned in CURLINFO_PROXY_ERROR if CURLE_PROXY was
698  * return for the transfers.
699  */
700 typedef enum {
701   CURLPX_OK,
702   CURLPX_BAD_ADDRESS_TYPE,
703   CURLPX_BAD_VERSION,
704   CURLPX_CLOSED,
705   CURLPX_GSSAPI,
706   CURLPX_GSSAPI_PERMSG,
707   CURLPX_GSSAPI_PROTECTION,
708   CURLPX_IDENTD,
709   CURLPX_IDENTD_DIFFER,
710   CURLPX_LONG_HOSTNAME,
711   CURLPX_LONG_PASSWD,
712   CURLPX_LONG_USER,
713   CURLPX_NO_AUTH,
714   CURLPX_RECV_ADDRESS,
715   CURLPX_RECV_AUTH,
716   CURLPX_RECV_CONNECT,
717   CURLPX_RECV_REQACK,
718   CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
719   CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
720   CURLPX_REPLY_CONNECTION_REFUSED,
721   CURLPX_REPLY_GENERAL_SERVER_FAILURE,
722   CURLPX_REPLY_HOST_UNREACHABLE,
723   CURLPX_REPLY_NETWORK_UNREACHABLE,
724   CURLPX_REPLY_NOT_ALLOWED,
725   CURLPX_REPLY_TTL_EXPIRED,
726   CURLPX_REPLY_UNASSIGNED,
727   CURLPX_REQUEST_FAILED,
728   CURLPX_RESOLVE_HOST,
729   CURLPX_SEND_AUTH,
730   CURLPX_SEND_CONNECT,
731   CURLPX_SEND_REQUEST,
732   CURLPX_UNKNOWN_FAIL,
733   CURLPX_UNKNOWN_MODE,
734   CURLPX_USER_REJECTED,
735   CURLPX_LAST /* never use */
736 } CURLproxycode;
737 
738 /* This prototype applies to all conversion callbacks */
739 typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
740 
741 typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl,    /* easy handle */
742                                           void *ssl_ctx, /* actually an OpenSSL
743                                                             or WolfSSL SSL_CTX,
744                                                             or an mbedTLS
745                                                           mbedtls_ssl_config */
746                                           void *userptr);
747 
748 typedef enum {
749   CURLPROXY_HTTP = 0,   /* added in 7.10, new in 7.19.4 default is to use
750                            CONNECT HTTP/1.1 */
751   CURLPROXY_HTTP_1_0 = 1,   /* added in 7.19.4, force to use CONNECT
752                                HTTP/1.0  */
753   CURLPROXY_HTTPS = 2, /* added in 7.52.0 */
754   CURLPROXY_SOCKS4 = 4, /* support added in 7.15.2, enum existed already
755                            in 7.10 */
756   CURLPROXY_SOCKS5 = 5, /* added in 7.10 */
757   CURLPROXY_SOCKS4A = 6, /* added in 7.18.0 */
758   CURLPROXY_SOCKS5_HOSTNAME = 7 /* Use the SOCKS5 protocol but pass along the
759                                    host name rather than the IP address. added
760                                    in 7.18.0 */
761 } curl_proxytype;  /* this enum was added in 7.10 */
762 
763 /*
764  * Bitmasks for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH options:
765  *
766  * CURLAUTH_NONE         - No HTTP authentication
767  * CURLAUTH_BASIC        - HTTP Basic authentication (default)
768  * CURLAUTH_DIGEST       - HTTP Digest authentication
769  * CURLAUTH_NEGOTIATE    - HTTP Negotiate (SPNEGO) authentication
770  * CURLAUTH_GSSNEGOTIATE - Alias for CURLAUTH_NEGOTIATE (deprecated)
771  * CURLAUTH_NTLM         - HTTP NTLM authentication
772  * CURLAUTH_DIGEST_IE    - HTTP Digest authentication with IE flavour
773  * CURLAUTH_NTLM_WB      - HTTP NTLM authentication delegated to winbind helper
774  * CURLAUTH_BEARER       - HTTP Bearer token authentication
775  * CURLAUTH_ONLY         - Use together with a single other type to force no
776  *                         authentication or just that single type
777  * CURLAUTH_ANY          - All fine types set
778  * CURLAUTH_ANYSAFE      - All fine types except Basic
779  */
780 
781 #define CURLAUTH_NONE         ((unsigned long)0)
782 #define CURLAUTH_BASIC        (((unsigned long)1)<<0)
783 #define CURLAUTH_DIGEST       (((unsigned long)1)<<1)
784 #define CURLAUTH_NEGOTIATE    (((unsigned long)1)<<2)
785 /* Deprecated since the advent of CURLAUTH_NEGOTIATE */
786 #define CURLAUTH_GSSNEGOTIATE CURLAUTH_NEGOTIATE
787 /* Used for CURLOPT_SOCKS5_AUTH to stay terminologically correct */
788 #define CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE
789 #define CURLAUTH_NTLM         (((unsigned long)1)<<3)
790 #define CURLAUTH_DIGEST_IE    (((unsigned long)1)<<4)
791 #define CURLAUTH_NTLM_WB      (((unsigned long)1)<<5)
792 #define CURLAUTH_BEARER       (((unsigned long)1)<<6)
793 #define CURLAUTH_AWS_SIGV4    (((unsigned long)1)<<7)
794 #define CURLAUTH_ONLY         (((unsigned long)1)<<31)
795 #define CURLAUTH_ANY          (~CURLAUTH_DIGEST_IE)
796 #define CURLAUTH_ANYSAFE      (~(CURLAUTH_BASIC|CURLAUTH_DIGEST_IE))
797 
798 #define CURLSSH_AUTH_ANY       ~0     /* all types supported by the server */
799 #define CURLSSH_AUTH_NONE      0      /* none allowed, silly but complete */
800 #define CURLSSH_AUTH_PUBLICKEY (1<<0) /* public/private key files */
801 #define CURLSSH_AUTH_PASSWORD  (1<<1) /* password */
802 #define CURLSSH_AUTH_HOST      (1<<2) /* host key files */
803 #define CURLSSH_AUTH_KEYBOARD  (1<<3) /* keyboard interactive */
804 #define CURLSSH_AUTH_AGENT     (1<<4) /* agent (ssh-agent, pageant...) */
805 #define CURLSSH_AUTH_GSSAPI    (1<<5) /* gssapi (kerberos, ...) */
806 #define CURLSSH_AUTH_DEFAULT CURLSSH_AUTH_ANY
807 
808 #define CURLGSSAPI_DELEGATION_NONE        0      /* no delegation (default) */
809 #define CURLGSSAPI_DELEGATION_POLICY_FLAG (1<<0) /* if permitted by policy */
810 #define CURLGSSAPI_DELEGATION_FLAG        (1<<1) /* delegate always */
811 
812 #define CURL_ERROR_SIZE 256
813 
814 enum curl_khtype {
815   CURLKHTYPE_UNKNOWN,
816   CURLKHTYPE_RSA1,
817   CURLKHTYPE_RSA,
818   CURLKHTYPE_DSS,
819   CURLKHTYPE_ECDSA,
820   CURLKHTYPE_ED25519
821 };
822 
823 struct curl_khkey {
824   const char *key; /* points to a null-terminated string encoded with base64
825                       if len is zero, otherwise to the "raw" data */
826   size_t len;
827   enum curl_khtype keytype;
828 };
829 
830 /* this is the set of return values expected from the curl_sshkeycallback
831    callback */
832 enum curl_khstat {
833   CURLKHSTAT_FINE_ADD_TO_FILE,
834   CURLKHSTAT_FINE,
835   CURLKHSTAT_REJECT, /* reject the connection, return an error */
836   CURLKHSTAT_DEFER,  /* do not accept it, but we can't answer right now so
837                         this causes a CURLE_DEFER error but otherwise the
838                         connection will be left intact etc */
839   CURLKHSTAT_FINE_REPLACE, /* accept and replace the wrong key*/
840   CURLKHSTAT_LAST    /* not for use, only a marker for last-in-list */
841 };
842 
843 /* this is the set of status codes pass in to the callback */
844 enum curl_khmatch {
845   CURLKHMATCH_OK,       /* match */
846   CURLKHMATCH_MISMATCH, /* host found, key mismatch! */
847   CURLKHMATCH_MISSING,  /* no matching host/key found */
848   CURLKHMATCH_LAST      /* not for use, only a marker for last-in-list */
849 };
850 
851 typedef int
852   (*curl_sshkeycallback) (CURL *easy,     /* easy handle */
853                           const struct curl_khkey *knownkey, /* known */
854                           const struct curl_khkey *foundkey, /* found */
855                           enum curl_khmatch, /* libcurl's view on the keys */
856                           void *clientp); /* custom pointer passed from app */
857 
858 /* parameter for the CURLOPT_USE_SSL option */
859 typedef enum {
860   CURLUSESSL_NONE,    /* do not attempt to use SSL */
861   CURLUSESSL_TRY,     /* try using SSL, proceed anyway otherwise */
862   CURLUSESSL_CONTROL, /* SSL for the control connection or fail */
863   CURLUSESSL_ALL,     /* SSL for all communication or fail */
864   CURLUSESSL_LAST     /* not an option, never use */
865 } curl_usessl;
866 
867 /* Definition of bits for the CURLOPT_SSL_OPTIONS argument: */
868 
869 /* - ALLOW_BEAST tells libcurl to allow the BEAST SSL vulnerability in the
870    name of improving interoperability with older servers. Some SSL libraries
871    have introduced work-arounds for this flaw but those work-arounds sometimes
872    make the SSL communication fail. To regain functionality with those broken
873    servers, a user can this way allow the vulnerability back. */
874 #define CURLSSLOPT_ALLOW_BEAST (1<<0)
875 
876 /* - NO_REVOKE tells libcurl to disable certificate revocation checks for those
877    SSL backends where such behavior is present. */
878 #define CURLSSLOPT_NO_REVOKE (1<<1)
879 
880 /* - NO_PARTIALCHAIN tells libcurl to *NOT* accept a partial certificate chain
881    if possible. The OpenSSL backend has this ability. */
882 #define CURLSSLOPT_NO_PARTIALCHAIN (1<<2)
883 
884 /* - REVOKE_BEST_EFFORT tells libcurl to ignore certificate revocation offline
885    checks and ignore missing revocation list for those SSL backends where such
886    behavior is present. */
887 #define CURLSSLOPT_REVOKE_BEST_EFFORT (1<<3)
888 
889 /* - CURLSSLOPT_NATIVE_CA tells libcurl to use standard certificate store of
890    operating system. Currently implemented under MS-Windows. */
891 #define CURLSSLOPT_NATIVE_CA (1<<4)
892 
893 /* - CURLSSLOPT_AUTO_CLIENT_CERT tells libcurl to automatically locate and use
894    a client certificate for authentication. (Schannel) */
895 #define CURLSSLOPT_AUTO_CLIENT_CERT (1<<5)
896 
897 /* The default connection attempt delay in milliseconds for happy eyeballs.
898    CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS.3 and happy-eyeballs-timeout-ms.d document
899    this value, keep them in sync. */
900 #define CURL_HET_DEFAULT 200L
901 
902 /* The default connection upkeep interval in milliseconds. */
903 #define CURL_UPKEEP_INTERVAL_DEFAULT 60000L
904 
905 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
906                           the obsolete stuff removed! */
907 
908 /* Backwards compatibility with older names */
909 /* These are scheduled to disappear by 2009 */
910 
911 #define CURLFTPSSL_NONE CURLUSESSL_NONE
912 #define CURLFTPSSL_TRY CURLUSESSL_TRY
913 #define CURLFTPSSL_CONTROL CURLUSESSL_CONTROL
914 #define CURLFTPSSL_ALL CURLUSESSL_ALL
915 #define CURLFTPSSL_LAST CURLUSESSL_LAST
916 #define curl_ftpssl curl_usessl
917 #endif /*!CURL_NO_OLDIES*/
918 
919 /* parameter for the CURLOPT_FTP_SSL_CCC option */
920 typedef enum {
921   CURLFTPSSL_CCC_NONE,    /* do not send CCC */
922   CURLFTPSSL_CCC_PASSIVE, /* Let the server initiate the shutdown */
923   CURLFTPSSL_CCC_ACTIVE,  /* Initiate the shutdown */
924   CURLFTPSSL_CCC_LAST     /* not an option, never use */
925 } curl_ftpccc;
926 
927 /* parameter for the CURLOPT_FTPSSLAUTH option */
928 typedef enum {
929   CURLFTPAUTH_DEFAULT, /* let libcurl decide */
930   CURLFTPAUTH_SSL,     /* use "AUTH SSL" */
931   CURLFTPAUTH_TLS,     /* use "AUTH TLS" */
932   CURLFTPAUTH_LAST /* not an option, never use */
933 } curl_ftpauth;
934 
935 /* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
936 typedef enum {
937   CURLFTP_CREATE_DIR_NONE,  /* do NOT create missing dirs! */
938   CURLFTP_CREATE_DIR,       /* (FTP/SFTP) if CWD fails, try MKD and then CWD
939                                again if MKD succeeded, for SFTP this does
940                                similar magic */
941   CURLFTP_CREATE_DIR_RETRY, /* (FTP only) if CWD fails, try MKD and then CWD
942                                again even if MKD failed! */
943   CURLFTP_CREATE_DIR_LAST   /* not an option, never use */
944 } curl_ftpcreatedir;
945 
946 /* parameter for the CURLOPT_FTP_FILEMETHOD option */
947 typedef enum {
948   CURLFTPMETHOD_DEFAULT,   /* let libcurl pick */
949   CURLFTPMETHOD_MULTICWD,  /* single CWD operation for each path part */
950   CURLFTPMETHOD_NOCWD,     /* no CWD at all */
951   CURLFTPMETHOD_SINGLECWD, /* one CWD to full dir, then work on file */
952   CURLFTPMETHOD_LAST       /* not an option, never use */
953 } curl_ftpmethod;
954 
955 /* bitmask defines for CURLOPT_HEADEROPT */
956 #define CURLHEADER_UNIFIED  0
957 #define CURLHEADER_SEPARATE (1<<0)
958 
959 /* CURLALTSVC_* are bits for the CURLOPT_ALTSVC_CTRL option */
960 #define CURLALTSVC_READONLYFILE (1<<2)
961 #define CURLALTSVC_H1           (1<<3)
962 #define CURLALTSVC_H2           (1<<4)
963 #define CURLALTSVC_H3           (1<<5)
964 
965 
966 struct curl_hstsentry {
967   char *name;
968   size_t namelen;
969   unsigned int includeSubDomains:1;
970   char expire[18]; /* YYYYMMDD HH:MM:SS [null-terminated] */
971 };
972 
973 struct curl_index {
974   size_t index; /* the provided entry's "index" or count */
975   size_t total; /* total number of entries to save */
976 };
977 
978 typedef enum {
979   CURLSTS_OK,
980   CURLSTS_DONE,
981   CURLSTS_FAIL
982 } CURLSTScode;
983 
984 typedef CURLSTScode (*curl_hstsread_callback)(CURL *easy,
985                                               struct curl_hstsentry *e,
986                                               void *userp);
987 typedef CURLSTScode (*curl_hstswrite_callback)(CURL *easy,
988                                                struct curl_hstsentry *e,
989                                                struct curl_index *i,
990                                                void *userp);
991 
992 /* CURLHSTS_* are bits for the CURLOPT_HSTS option */
993 #define CURLHSTS_ENABLE       (long)(1<<0)
994 #define CURLHSTS_READONLYFILE (long)(1<<1)
995 
996 /* CURLPROTO_ defines are for the CURLOPT_*PROTOCOLS options */
997 #define CURLPROTO_HTTP   (1<<0)
998 #define CURLPROTO_HTTPS  (1<<1)
999 #define CURLPROTO_FTP    (1<<2)
1000 #define CURLPROTO_FTPS   (1<<3)
1001 #define CURLPROTO_SCP    (1<<4)
1002 #define CURLPROTO_SFTP   (1<<5)
1003 #define CURLPROTO_TELNET (1<<6)
1004 #define CURLPROTO_LDAP   (1<<7)
1005 #define CURLPROTO_LDAPS  (1<<8)
1006 #define CURLPROTO_DICT   (1<<9)
1007 #define CURLPROTO_FILE   (1<<10)
1008 #define CURLPROTO_TFTP   (1<<11)
1009 #define CURLPROTO_IMAP   (1<<12)
1010 #define CURLPROTO_IMAPS  (1<<13)
1011 #define CURLPROTO_POP3   (1<<14)
1012 #define CURLPROTO_POP3S  (1<<15)
1013 #define CURLPROTO_SMTP   (1<<16)
1014 #define CURLPROTO_SMTPS  (1<<17)
1015 #define CURLPROTO_RTSP   (1<<18)
1016 #define CURLPROTO_RTMP   (1<<19)
1017 #define CURLPROTO_RTMPT  (1<<20)
1018 #define CURLPROTO_RTMPE  (1<<21)
1019 #define CURLPROTO_RTMPTE (1<<22)
1020 #define CURLPROTO_RTMPS  (1<<23)
1021 #define CURLPROTO_RTMPTS (1<<24)
1022 #define CURLPROTO_GOPHER (1<<25)
1023 #define CURLPROTO_SMB    (1<<26)
1024 #define CURLPROTO_SMBS   (1<<27)
1025 #define CURLPROTO_MQTT   (1<<28)
1026 #define CURLPROTO_GOPHERS (1<<29)
1027 #define CURLPROTO_ALL    (~0) /* enable everything */
1028 
1029 /* long may be 32 or 64 bits, but we should never depend on anything else
1030    but 32 */
1031 #define CURLOPTTYPE_LONG          0
1032 #define CURLOPTTYPE_OBJECTPOINT   10000
1033 #define CURLOPTTYPE_FUNCTIONPOINT 20000
1034 #define CURLOPTTYPE_OFF_T         30000
1035 #define CURLOPTTYPE_BLOB          40000
1036 
1037 /* *STRINGPOINT is an alias for OBJECTPOINT to allow tools to extract the
1038    string options from the header file */
1039 
1040 
1041 #define CURLOPT(na,t,nu) na = t + nu
1042 
1043 /* CURLOPT aliases that make no run-time difference */
1044 
1045 /* 'char *' argument to a string with a trailing zero */
1046 #define CURLOPTTYPE_STRINGPOINT CURLOPTTYPE_OBJECTPOINT
1047 
1048 /* 'struct curl_slist *' argument */
1049 #define CURLOPTTYPE_SLISTPOINT  CURLOPTTYPE_OBJECTPOINT
1050 
1051 /* 'void *' argument passed untouched to callback */
1052 #define CURLOPTTYPE_CBPOINT     CURLOPTTYPE_OBJECTPOINT
1053 
1054 /* 'long' argument with a set of values/bitmask */
1055 #define CURLOPTTYPE_VALUES      CURLOPTTYPE_LONG
1056 
1057 /*
1058  * All CURLOPT_* values.
1059  */
1060 
1061 typedef enum {
1062   /* This is the FILE * or void * the regular output should be written to. */
1063   CURLOPT(CURLOPT_WRITEDATA, CURLOPTTYPE_CBPOINT, 1),
1064 
1065   /* The full URL to get/put */
1066   CURLOPT(CURLOPT_URL, CURLOPTTYPE_STRINGPOINT, 2),
1067 
1068   /* Port number to connect to, if other than default. */
1069   CURLOPT(CURLOPT_PORT, CURLOPTTYPE_LONG, 3),
1070 
1071   /* Name of proxy to use. */
1072   CURLOPT(CURLOPT_PROXY, CURLOPTTYPE_STRINGPOINT, 4),
1073 
1074   /* "user:password;options" to use when fetching. */
1075   CURLOPT(CURLOPT_USERPWD, CURLOPTTYPE_STRINGPOINT, 5),
1076 
1077   /* "user:password" to use with proxy. */
1078   CURLOPT(CURLOPT_PROXYUSERPWD, CURLOPTTYPE_STRINGPOINT, 6),
1079 
1080   /* Range to get, specified as an ASCII string. */
1081   CURLOPT(CURLOPT_RANGE, CURLOPTTYPE_STRINGPOINT, 7),
1082 
1083   /* not used */
1084 
1085   /* Specified file stream to upload from (use as input): */
1086   CURLOPT(CURLOPT_READDATA, CURLOPTTYPE_CBPOINT, 9),
1087 
1088   /* Buffer to receive error messages in, must be at least CURL_ERROR_SIZE
1089    * bytes big. */
1090   CURLOPT(CURLOPT_ERRORBUFFER, CURLOPTTYPE_OBJECTPOINT, 10),
1091 
1092   /* Function that will be called to store the output (instead of fwrite). The
1093    * parameters will use fwrite() syntax, make sure to follow them. */
1094   CURLOPT(CURLOPT_WRITEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 11),
1095 
1096   /* Function that will be called to read the input (instead of fread). The
1097    * parameters will use fread() syntax, make sure to follow them. */
1098   CURLOPT(CURLOPT_READFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 12),
1099 
1100   /* Time-out the read operation after this amount of seconds */
1101   CURLOPT(CURLOPT_TIMEOUT, CURLOPTTYPE_LONG, 13),
1102 
1103   /* If the CURLOPT_INFILE is used, this can be used to inform libcurl about
1104    * how large the file being sent really is. That allows better error
1105    * checking and better verifies that the upload was successful. -1 means
1106    * unknown size.
1107    *
1108    * For large file support, there is also a _LARGE version of the key
1109    * which takes an off_t type, allowing platforms with larger off_t
1110    * sizes to handle larger files.  See below for INFILESIZE_LARGE.
1111    */
1112   CURLOPT(CURLOPT_INFILESIZE, CURLOPTTYPE_LONG, 14),
1113 
1114   /* POST static input fields. */
1115   CURLOPT(CURLOPT_POSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 15),
1116 
1117   /* Set the referrer page (needed by some CGIs) */
1118   CURLOPT(CURLOPT_REFERER, CURLOPTTYPE_STRINGPOINT, 16),
1119 
1120   /* Set the FTP PORT string (interface name, named or numerical IP address)
1121      Use i.e '-' to use default address. */
1122   CURLOPT(CURLOPT_FTPPORT, CURLOPTTYPE_STRINGPOINT, 17),
1123 
1124   /* Set the User-Agent string (examined by some CGIs) */
1125   CURLOPT(CURLOPT_USERAGENT, CURLOPTTYPE_STRINGPOINT, 18),
1126 
1127   /* If the download receives less than "low speed limit" bytes/second
1128    * during "low speed time" seconds, the operations is aborted.
1129    * You could i.e if you have a pretty high speed connection, abort if
1130    * it is less than 2000 bytes/sec during 20 seconds.
1131    */
1132 
1133   /* Set the "low speed limit" */
1134   CURLOPT(CURLOPT_LOW_SPEED_LIMIT, CURLOPTTYPE_LONG, 19),
1135 
1136   /* Set the "low speed time" */
1137   CURLOPT(CURLOPT_LOW_SPEED_TIME, CURLOPTTYPE_LONG, 20),
1138 
1139   /* Set the continuation offset.
1140    *
1141    * Note there is also a _LARGE version of this key which uses
1142    * off_t types, allowing for large file offsets on platforms which
1143    * use larger-than-32-bit off_t's.  Look below for RESUME_FROM_LARGE.
1144    */
1145   CURLOPT(CURLOPT_RESUME_FROM, CURLOPTTYPE_LONG, 21),
1146 
1147   /* Set cookie in request: */
1148   CURLOPT(CURLOPT_COOKIE, CURLOPTTYPE_STRINGPOINT, 22),
1149 
1150   /* This points to a linked list of headers, struct curl_slist kind. This
1151      list is also used for RTSP (in spite of its name) */
1152   CURLOPT(CURLOPT_HTTPHEADER, CURLOPTTYPE_SLISTPOINT, 23),
1153 
1154   /* This points to a linked list of post entries, struct curl_httppost */
1155   CURLOPT(CURLOPT_HTTPPOST, CURLOPTTYPE_OBJECTPOINT, 24),
1156 
1157   /* name of the file keeping your private SSL-certificate */
1158   CURLOPT(CURLOPT_SSLCERT, CURLOPTTYPE_STRINGPOINT, 25),
1159 
1160   /* password for the SSL or SSH private key */
1161   CURLOPT(CURLOPT_KEYPASSWD, CURLOPTTYPE_STRINGPOINT, 26),
1162 
1163   /* send TYPE parameter? */
1164   CURLOPT(CURLOPT_CRLF, CURLOPTTYPE_LONG, 27),
1165 
1166   /* send linked-list of QUOTE commands */
1167   CURLOPT(CURLOPT_QUOTE, CURLOPTTYPE_SLISTPOINT, 28),
1168 
1169   /* send FILE * or void * to store headers to, if you use a callback it
1170      is simply passed to the callback unmodified */
1171   CURLOPT(CURLOPT_HEADERDATA, CURLOPTTYPE_CBPOINT, 29),
1172 
1173   /* point to a file to read the initial cookies from, also enables
1174      "cookie awareness" */
1175   CURLOPT(CURLOPT_COOKIEFILE, CURLOPTTYPE_STRINGPOINT, 31),
1176 
1177   /* What version to specifically try to use.
1178      See CURL_SSLVERSION defines below. */
1179   CURLOPT(CURLOPT_SSLVERSION, CURLOPTTYPE_VALUES, 32),
1180 
1181   /* What kind of HTTP time condition to use, see defines */
1182   CURLOPT(CURLOPT_TIMECONDITION, CURLOPTTYPE_VALUES, 33),
1183 
1184   /* Time to use with the above condition. Specified in number of seconds
1185      since 1 Jan 1970 */
1186   CURLOPT(CURLOPT_TIMEVALUE, CURLOPTTYPE_LONG, 34),
1187 
1188   /* 35 = OBSOLETE */
1189 
1190   /* Custom request, for customizing the get command like
1191      HTTP: DELETE, TRACE and others
1192      FTP: to use a different list command
1193      */
1194   CURLOPT(CURLOPT_CUSTOMREQUEST, CURLOPTTYPE_STRINGPOINT, 36),
1195 
1196   /* FILE handle to use instead of stderr */
1197   CURLOPT(CURLOPT_STDERR, CURLOPTTYPE_OBJECTPOINT, 37),
1198 
1199   /* 38 is not used */
1200 
1201   /* send linked-list of post-transfer QUOTE commands */
1202   CURLOPT(CURLOPT_POSTQUOTE, CURLOPTTYPE_SLISTPOINT, 39),
1203 
1204    /* OBSOLETE, do not use! */
1205   CURLOPT(CURLOPT_OBSOLETE40, CURLOPTTYPE_OBJECTPOINT, 40),
1206 
1207   /* talk a lot */
1208   CURLOPT(CURLOPT_VERBOSE, CURLOPTTYPE_LONG, 41),
1209 
1210   /* throw the header out too */
1211   CURLOPT(CURLOPT_HEADER, CURLOPTTYPE_LONG, 42),
1212 
1213   /* shut off the progress meter */
1214   CURLOPT(CURLOPT_NOPROGRESS, CURLOPTTYPE_LONG, 43),
1215 
1216   /* use HEAD to get http document */
1217   CURLOPT(CURLOPT_NOBODY, CURLOPTTYPE_LONG, 44),
1218 
1219   /* no output on http error codes >= 400 */
1220   CURLOPT(CURLOPT_FAILONERROR, CURLOPTTYPE_LONG, 45),
1221 
1222   /* this is an upload */
1223   CURLOPT(CURLOPT_UPLOAD, CURLOPTTYPE_LONG, 46),
1224 
1225   /* HTTP POST method */
1226   CURLOPT(CURLOPT_POST, CURLOPTTYPE_LONG, 47),
1227 
1228   /* bare names when listing directories */
1229   CURLOPT(CURLOPT_DIRLISTONLY, CURLOPTTYPE_LONG, 48),
1230 
1231   /* Append instead of overwrite on upload! */
1232   CURLOPT(CURLOPT_APPEND, CURLOPTTYPE_LONG, 50),
1233 
1234   /* Specify whether to read the user+password from the .netrc or the URL.
1235    * This must be one of the CURL_NETRC_* enums below. */
1236   CURLOPT(CURLOPT_NETRC, CURLOPTTYPE_VALUES, 51),
1237 
1238   /* use Location: Luke! */
1239   CURLOPT(CURLOPT_FOLLOWLOCATION, CURLOPTTYPE_LONG, 52),
1240 
1241    /* transfer data in text/ASCII format */
1242   CURLOPT(CURLOPT_TRANSFERTEXT, CURLOPTTYPE_LONG, 53),
1243 
1244   /* HTTP PUT */
1245   CURLOPT(CURLOPT_PUT, CURLOPTTYPE_LONG, 54),
1246 
1247   /* 55 = OBSOLETE */
1248 
1249   /* DEPRECATED
1250    * Function that will be called instead of the internal progress display
1251    * function. This function should be defined as the curl_progress_callback
1252    * prototype defines. */
1253   CURLOPT(CURLOPT_PROGRESSFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 56),
1254 
1255   /* Data passed to the CURLOPT_PROGRESSFUNCTION and CURLOPT_XFERINFOFUNCTION
1256      callbacks */
1257   CURLOPT(CURLOPT_XFERINFODATA, CURLOPTTYPE_CBPOINT, 57),
1258 #define CURLOPT_PROGRESSDATA CURLOPT_XFERINFODATA
1259 
1260   /* We want the referrer field set automatically when following locations */
1261   CURLOPT(CURLOPT_AUTOREFERER, CURLOPTTYPE_LONG, 58),
1262 
1263   /* Port of the proxy, can be set in the proxy string as well with:
1264      "[host]:[port]" */
1265   CURLOPT(CURLOPT_PROXYPORT, CURLOPTTYPE_LONG, 59),
1266 
1267   /* size of the POST input data, if strlen() is not good to use */
1268   CURLOPT(CURLOPT_POSTFIELDSIZE, CURLOPTTYPE_LONG, 60),
1269 
1270   /* tunnel non-http operations through a HTTP proxy */
1271   CURLOPT(CURLOPT_HTTPPROXYTUNNEL, CURLOPTTYPE_LONG, 61),
1272 
1273   /* Set the interface string to use as outgoing network interface */
1274   CURLOPT(CURLOPT_INTERFACE, CURLOPTTYPE_STRINGPOINT, 62),
1275 
1276   /* Set the krb4/5 security level, this also enables krb4/5 awareness.  This
1277    * is a string, 'clear', 'safe', 'confidential' or 'private'.  If the string
1278    * is set but doesn't match one of these, 'private' will be used.  */
1279   CURLOPT(CURLOPT_KRBLEVEL, CURLOPTTYPE_STRINGPOINT, 63),
1280 
1281   /* Set if we should verify the peer in ssl handshake, set 1 to verify. */
1282   CURLOPT(CURLOPT_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 64),
1283 
1284   /* The CApath or CAfile used to validate the peer certificate
1285      this option is used only if SSL_VERIFYPEER is true */
1286   CURLOPT(CURLOPT_CAINFO, CURLOPTTYPE_STRINGPOINT, 65),
1287 
1288   /* 66 = OBSOLETE */
1289   /* 67 = OBSOLETE */
1290 
1291   /* Maximum number of http redirects to follow */
1292   CURLOPT(CURLOPT_MAXREDIRS, CURLOPTTYPE_LONG, 68),
1293 
1294   /* Pass a long set to 1 to get the date of the requested document (if
1295      possible)! Pass a zero to shut it off. */
1296   CURLOPT(CURLOPT_FILETIME, CURLOPTTYPE_LONG, 69),
1297 
1298   /* This points to a linked list of telnet options */
1299   CURLOPT(CURLOPT_TELNETOPTIONS, CURLOPTTYPE_SLISTPOINT, 70),
1300 
1301   /* Max amount of cached alive connections */
1302   CURLOPT(CURLOPT_MAXCONNECTS, CURLOPTTYPE_LONG, 71),
1303 
1304   /* OBSOLETE, do not use! */
1305   CURLOPT(CURLOPT_OBSOLETE72, CURLOPTTYPE_LONG, 72),
1306 
1307   /* 73 = OBSOLETE */
1308 
1309   /* Set to explicitly use a new connection for the upcoming transfer.
1310      Do not use this unless you're absolutely sure of this, as it makes the
1311      operation slower and is less friendly for the network. */
1312   CURLOPT(CURLOPT_FRESH_CONNECT, CURLOPTTYPE_LONG, 74),
1313 
1314   /* Set to explicitly forbid the upcoming transfer's connection to be re-used
1315      when done. Do not use this unless you're absolutely sure of this, as it
1316      makes the operation slower and is less friendly for the network. */
1317   CURLOPT(CURLOPT_FORBID_REUSE, CURLOPTTYPE_LONG, 75),
1318 
1319   /* Set to a file name that contains random data for libcurl to use to
1320      seed the random engine when doing SSL connects. */
1321   CURLOPT(CURLOPT_RANDOM_FILE, CURLOPTTYPE_STRINGPOINT, 76),
1322 
1323   /* Set to the Entropy Gathering Daemon socket pathname */
1324   CURLOPT(CURLOPT_EGDSOCKET, CURLOPTTYPE_STRINGPOINT, 77),
1325 
1326   /* Time-out connect operations after this amount of seconds, if connects are
1327      OK within this time, then fine... This only aborts the connect phase. */
1328   CURLOPT(CURLOPT_CONNECTTIMEOUT, CURLOPTTYPE_LONG, 78),
1329 
1330   /* Function that will be called to store headers (instead of fwrite). The
1331    * parameters will use fwrite() syntax, make sure to follow them. */
1332   CURLOPT(CURLOPT_HEADERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 79),
1333 
1334   /* Set this to force the HTTP request to get back to GET. Only really usable
1335      if POST, PUT or a custom request have been used first.
1336    */
1337   CURLOPT(CURLOPT_HTTPGET, CURLOPTTYPE_LONG, 80),
1338 
1339   /* Set if we should verify the Common name from the peer certificate in ssl
1340    * handshake, set 1 to check existence, 2 to ensure that it matches the
1341    * provided hostname. */
1342   CURLOPT(CURLOPT_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 81),
1343 
1344   /* Specify which file name to write all known cookies in after completed
1345      operation. Set file name to "-" (dash) to make it go to stdout. */
1346   CURLOPT(CURLOPT_COOKIEJAR, CURLOPTTYPE_STRINGPOINT, 82),
1347 
1348   /* Specify which SSL ciphers to use */
1349   CURLOPT(CURLOPT_SSL_CIPHER_LIST, CURLOPTTYPE_STRINGPOINT, 83),
1350 
1351   /* Specify which HTTP version to use! This must be set to one of the
1352      CURL_HTTP_VERSION* enums set below. */
1353   CURLOPT(CURLOPT_HTTP_VERSION, CURLOPTTYPE_VALUES, 84),
1354 
1355   /* Specifically switch on or off the FTP engine's use of the EPSV command. By
1356      default, that one will always be attempted before the more traditional
1357      PASV command. */
1358   CURLOPT(CURLOPT_FTP_USE_EPSV, CURLOPTTYPE_LONG, 85),
1359 
1360   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") */
1361   CURLOPT(CURLOPT_SSLCERTTYPE, CURLOPTTYPE_STRINGPOINT, 86),
1362 
1363   /* name of the file keeping your private SSL-key */
1364   CURLOPT(CURLOPT_SSLKEY, CURLOPTTYPE_STRINGPOINT, 87),
1365 
1366   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") */
1367   CURLOPT(CURLOPT_SSLKEYTYPE, CURLOPTTYPE_STRINGPOINT, 88),
1368 
1369   /* crypto engine for the SSL-sub system */
1370   CURLOPT(CURLOPT_SSLENGINE, CURLOPTTYPE_STRINGPOINT, 89),
1371 
1372   /* set the crypto engine for the SSL-sub system as default
1373      the param has no meaning...
1374    */
1375   CURLOPT(CURLOPT_SSLENGINE_DEFAULT, CURLOPTTYPE_LONG, 90),
1376 
1377   /* Non-zero value means to use the global dns cache */
1378   /* DEPRECATED, do not use! */
1379   CURLOPT(CURLOPT_DNS_USE_GLOBAL_CACHE, CURLOPTTYPE_LONG, 91),
1380 
1381   /* DNS cache timeout */
1382   CURLOPT(CURLOPT_DNS_CACHE_TIMEOUT, CURLOPTTYPE_LONG, 92),
1383 
1384   /* send linked-list of pre-transfer QUOTE commands */
1385   CURLOPT(CURLOPT_PREQUOTE, CURLOPTTYPE_SLISTPOINT, 93),
1386 
1387   /* set the debug function */
1388   CURLOPT(CURLOPT_DEBUGFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 94),
1389 
1390   /* set the data for the debug function */
1391   CURLOPT(CURLOPT_DEBUGDATA, CURLOPTTYPE_CBPOINT, 95),
1392 
1393   /* mark this as start of a cookie session */
1394   CURLOPT(CURLOPT_COOKIESESSION, CURLOPTTYPE_LONG, 96),
1395 
1396   /* The CApath directory used to validate the peer certificate
1397      this option is used only if SSL_VERIFYPEER is true */
1398   CURLOPT(CURLOPT_CAPATH, CURLOPTTYPE_STRINGPOINT, 97),
1399 
1400   /* Instruct libcurl to use a smaller receive buffer */
1401   CURLOPT(CURLOPT_BUFFERSIZE, CURLOPTTYPE_LONG, 98),
1402 
1403   /* Instruct libcurl to not use any signal/alarm handlers, even when using
1404      timeouts. This option is useful for multi-threaded applications.
1405      See libcurl-the-guide for more background information. */
1406   CURLOPT(CURLOPT_NOSIGNAL, CURLOPTTYPE_LONG, 99),
1407 
1408   /* Provide a CURLShare for mutexing non-ts data */
1409   CURLOPT(CURLOPT_SHARE, CURLOPTTYPE_OBJECTPOINT, 100),
1410 
1411   /* indicates type of proxy. accepted values are CURLPROXY_HTTP (default),
1412      CURLPROXY_HTTPS, CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and
1413      CURLPROXY_SOCKS5. */
1414   CURLOPT(CURLOPT_PROXYTYPE, CURLOPTTYPE_VALUES, 101),
1415 
1416   /* Set the Accept-Encoding string. Use this to tell a server you would like
1417      the response to be compressed. Before 7.21.6, this was known as
1418      CURLOPT_ENCODING */
1419   CURLOPT(CURLOPT_ACCEPT_ENCODING, CURLOPTTYPE_STRINGPOINT, 102),
1420 
1421   /* Set pointer to private data */
1422   CURLOPT(CURLOPT_PRIVATE, CURLOPTTYPE_OBJECTPOINT, 103),
1423 
1424   /* Set aliases for HTTP 200 in the HTTP Response header */
1425   CURLOPT(CURLOPT_HTTP200ALIASES, CURLOPTTYPE_SLISTPOINT, 104),
1426 
1427   /* Continue to send authentication (user+password) when following locations,
1428      even when hostname changed. This can potentially send off the name
1429      and password to whatever host the server decides. */
1430   CURLOPT(CURLOPT_UNRESTRICTED_AUTH, CURLOPTTYPE_LONG, 105),
1431 
1432   /* Specifically switch on or off the FTP engine's use of the EPRT command (
1433      it also disables the LPRT attempt). By default, those ones will always be
1434      attempted before the good old traditional PORT command. */
1435   CURLOPT(CURLOPT_FTP_USE_EPRT, CURLOPTTYPE_LONG, 106),
1436 
1437   /* Set this to a bitmask value to enable the particular authentications
1438      methods you like. Use this in combination with CURLOPT_USERPWD.
1439      Note that setting multiple bits may cause extra network round-trips. */
1440   CURLOPT(CURLOPT_HTTPAUTH, CURLOPTTYPE_VALUES, 107),
1441 
1442   /* Set the ssl context callback function, currently only for OpenSSL or
1443      WolfSSL ssl_ctx, or mbedTLS mbedtls_ssl_config in the second argument.
1444      The function must match the curl_ssl_ctx_callback prototype. */
1445   CURLOPT(CURLOPT_SSL_CTX_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 108),
1446 
1447   /* Set the userdata for the ssl context callback function's third
1448      argument */
1449   CURLOPT(CURLOPT_SSL_CTX_DATA, CURLOPTTYPE_CBPOINT, 109),
1450 
1451   /* FTP Option that causes missing dirs to be created on the remote server.
1452      In 7.19.4 we introduced the convenience enums for this option using the
1453      CURLFTP_CREATE_DIR prefix.
1454   */
1455   CURLOPT(CURLOPT_FTP_CREATE_MISSING_DIRS, CURLOPTTYPE_LONG, 110),
1456 
1457   /* Set this to a bitmask value to enable the particular authentications
1458      methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
1459      Note that setting multiple bits may cause extra network round-trips. */
1460   CURLOPT(CURLOPT_PROXYAUTH, CURLOPTTYPE_VALUES, 111),
1461 
1462   /* FTP option that changes the timeout, in seconds, associated with
1463      getting a response.  This is different from transfer timeout time and
1464      essentially places a demand on the FTP server to acknowledge commands
1465      in a timely manner. */
1466   CURLOPT(CURLOPT_FTP_RESPONSE_TIMEOUT, CURLOPTTYPE_LONG, 112),
1467 #define CURLOPT_SERVER_RESPONSE_TIMEOUT CURLOPT_FTP_RESPONSE_TIMEOUT
1468 
1469   /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
1470      tell libcurl to use those IP versions only. This only has effect on
1471      systems with support for more than one, i.e IPv4 _and_ IPv6. */
1472   CURLOPT(CURLOPT_IPRESOLVE, CURLOPTTYPE_VALUES, 113),
1473 
1474   /* Set this option to limit the size of a file that will be downloaded from
1475      an HTTP or FTP server.
1476 
1477      Note there is also _LARGE version which adds large file support for
1478      platforms which have larger off_t sizes.  See MAXFILESIZE_LARGE below. */
1479   CURLOPT(CURLOPT_MAXFILESIZE, CURLOPTTYPE_LONG, 114),
1480 
1481   /* See the comment for INFILESIZE above, but in short, specifies
1482    * the size of the file being uploaded.  -1 means unknown.
1483    */
1484   CURLOPT(CURLOPT_INFILESIZE_LARGE, CURLOPTTYPE_OFF_T, 115),
1485 
1486   /* Sets the continuation offset.  There is also a CURLOPTTYPE_LONG version
1487    * of this; look above for RESUME_FROM.
1488    */
1489   CURLOPT(CURLOPT_RESUME_FROM_LARGE, CURLOPTTYPE_OFF_T, 116),
1490 
1491   /* Sets the maximum size of data that will be downloaded from
1492    * an HTTP or FTP server.  See MAXFILESIZE above for the LONG version.
1493    */
1494   CURLOPT(CURLOPT_MAXFILESIZE_LARGE, CURLOPTTYPE_OFF_T, 117),
1495 
1496   /* Set this option to the file name of your .netrc file you want libcurl
1497      to parse (using the CURLOPT_NETRC option). If not set, libcurl will do
1498      a poor attempt to find the user's home directory and check for a .netrc
1499      file in there. */
1500   CURLOPT(CURLOPT_NETRC_FILE, CURLOPTTYPE_STRINGPOINT, 118),
1501 
1502   /* Enable SSL/TLS for FTP, pick one of:
1503      CURLUSESSL_TRY     - try using SSL, proceed anyway otherwise
1504      CURLUSESSL_CONTROL - SSL for the control connection or fail
1505      CURLUSESSL_ALL     - SSL for all communication or fail
1506   */
1507   CURLOPT(CURLOPT_USE_SSL, CURLOPTTYPE_VALUES, 119),
1508 
1509   /* The _LARGE version of the standard POSTFIELDSIZE option */
1510   CURLOPT(CURLOPT_POSTFIELDSIZE_LARGE, CURLOPTTYPE_OFF_T, 120),
1511 
1512   /* Enable/disable the TCP Nagle algorithm */
1513   CURLOPT(CURLOPT_TCP_NODELAY, CURLOPTTYPE_LONG, 121),
1514 
1515   /* 122 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1516   /* 123 OBSOLETE. Gone in 7.16.0 */
1517   /* 124 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1518   /* 125 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1519   /* 126 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1520   /* 127 OBSOLETE. Gone in 7.16.0 */
1521   /* 128 OBSOLETE. Gone in 7.16.0 */
1522 
1523   /* When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option
1524      can be used to change libcurl's default action which is to first try
1525      "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK
1526      response has been received.
1527 
1528      Available parameters are:
1529      CURLFTPAUTH_DEFAULT - let libcurl decide
1530      CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
1531      CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
1532   */
1533   CURLOPT(CURLOPT_FTPSSLAUTH, CURLOPTTYPE_VALUES, 129),
1534 
1535   CURLOPT(CURLOPT_IOCTLFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 130),
1536   CURLOPT(CURLOPT_IOCTLDATA, CURLOPTTYPE_CBPOINT, 131),
1537 
1538   /* 132 OBSOLETE. Gone in 7.16.0 */
1539   /* 133 OBSOLETE. Gone in 7.16.0 */
1540 
1541   /* null-terminated string for pass on to the FTP server when asked for
1542      "account" info */
1543   CURLOPT(CURLOPT_FTP_ACCOUNT, CURLOPTTYPE_STRINGPOINT, 134),
1544 
1545   /* feed cookie into cookie engine */
1546   CURLOPT(CURLOPT_COOKIELIST, CURLOPTTYPE_STRINGPOINT, 135),
1547 
1548   /* ignore Content-Length */
1549   CURLOPT(CURLOPT_IGNORE_CONTENT_LENGTH, CURLOPTTYPE_LONG, 136),
1550 
1551   /* Set to non-zero to skip the IP address received in a 227 PASV FTP server
1552      response. Typically used for FTP-SSL purposes but is not restricted to
1553      that. libcurl will then instead use the same IP address it used for the
1554      control connection. */
1555   CURLOPT(CURLOPT_FTP_SKIP_PASV_IP, CURLOPTTYPE_LONG, 137),
1556 
1557   /* Select "file method" to use when doing FTP, see the curl_ftpmethod
1558      above. */
1559   CURLOPT(CURLOPT_FTP_FILEMETHOD, CURLOPTTYPE_VALUES, 138),
1560 
1561   /* Local port number to bind the socket to */
1562   CURLOPT(CURLOPT_LOCALPORT, CURLOPTTYPE_LONG, 139),
1563 
1564   /* Number of ports to try, including the first one set with LOCALPORT.
1565      Thus, setting it to 1 will make no additional attempts but the first.
1566   */
1567   CURLOPT(CURLOPT_LOCALPORTRANGE, CURLOPTTYPE_LONG, 140),
1568 
1569   /* no transfer, set up connection and let application use the socket by
1570      extracting it with CURLINFO_LASTSOCKET */
1571   CURLOPT(CURLOPT_CONNECT_ONLY, CURLOPTTYPE_LONG, 141),
1572 
1573   /* Function that will be called to convert from the
1574      network encoding (instead of using the iconv calls in libcurl) */
1575   CURLOPT(CURLOPT_CONV_FROM_NETWORK_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 142),
1576 
1577   /* Function that will be called to convert to the
1578      network encoding (instead of using the iconv calls in libcurl) */
1579   CURLOPT(CURLOPT_CONV_TO_NETWORK_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 143),
1580 
1581   /* Function that will be called to convert from UTF8
1582      (instead of using the iconv calls in libcurl)
1583      Note that this is used only for SSL certificate processing */
1584   CURLOPT(CURLOPT_CONV_FROM_UTF8_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 144),
1585 
1586   /* if the connection proceeds too quickly then need to slow it down */
1587   /* limit-rate: maximum number of bytes per second to send or receive */
1588   CURLOPT(CURLOPT_MAX_SEND_SPEED_LARGE, CURLOPTTYPE_OFF_T, 145),
1589   CURLOPT(CURLOPT_MAX_RECV_SPEED_LARGE, CURLOPTTYPE_OFF_T, 146),
1590 
1591   /* Pointer to command string to send if USER/PASS fails. */
1592   CURLOPT(CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPTTYPE_STRINGPOINT, 147),
1593 
1594   /* callback function for setting socket options */
1595   CURLOPT(CURLOPT_SOCKOPTFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 148),
1596   CURLOPT(CURLOPT_SOCKOPTDATA, CURLOPTTYPE_CBPOINT, 149),
1597 
1598   /* set to 0 to disable session ID re-use for this transfer, default is
1599      enabled (== 1) */
1600   CURLOPT(CURLOPT_SSL_SESSIONID_CACHE, CURLOPTTYPE_LONG, 150),
1601 
1602   /* allowed SSH authentication methods */
1603   CURLOPT(CURLOPT_SSH_AUTH_TYPES, CURLOPTTYPE_VALUES, 151),
1604 
1605   /* Used by scp/sftp to do public/private key authentication */
1606   CURLOPT(CURLOPT_SSH_PUBLIC_KEYFILE, CURLOPTTYPE_STRINGPOINT, 152),
1607   CURLOPT(CURLOPT_SSH_PRIVATE_KEYFILE, CURLOPTTYPE_STRINGPOINT, 153),
1608 
1609   /* Send CCC (Clear Command Channel) after authentication */
1610   CURLOPT(CURLOPT_FTP_SSL_CCC, CURLOPTTYPE_LONG, 154),
1611 
1612   /* Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution */
1613   CURLOPT(CURLOPT_TIMEOUT_MS, CURLOPTTYPE_LONG, 155),
1614   CURLOPT(CURLOPT_CONNECTTIMEOUT_MS, CURLOPTTYPE_LONG, 156),
1615 
1616   /* set to zero to disable the libcurl's decoding and thus pass the raw body
1617      data to the application even when it is encoded/compressed */
1618   CURLOPT(CURLOPT_HTTP_TRANSFER_DECODING, CURLOPTTYPE_LONG, 157),
1619   CURLOPT(CURLOPT_HTTP_CONTENT_DECODING, CURLOPTTYPE_LONG, 158),
1620 
1621   /* Permission used when creating new files and directories on the remote
1622      server for protocols that support it, SFTP/SCP/FILE */
1623   CURLOPT(CURLOPT_NEW_FILE_PERMS, CURLOPTTYPE_LONG, 159),
1624   CURLOPT(CURLOPT_NEW_DIRECTORY_PERMS, CURLOPTTYPE_LONG, 160),
1625 
1626   /* Set the behavior of POST when redirecting. Values must be set to one
1627      of CURL_REDIR* defines below. This used to be called CURLOPT_POST301 */
1628   CURLOPT(CURLOPT_POSTREDIR, CURLOPTTYPE_VALUES, 161),
1629 
1630   /* used by scp/sftp to verify the host's public key */
1631   CURLOPT(CURLOPT_SSH_HOST_PUBLIC_KEY_MD5, CURLOPTTYPE_STRINGPOINT, 162),
1632 
1633   /* Callback function for opening socket (instead of socket(2)). Optionally,
1634      callback is able change the address or refuse to connect returning
1635      CURL_SOCKET_BAD.  The callback should have type
1636      curl_opensocket_callback */
1637   CURLOPT(CURLOPT_OPENSOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 163),
1638   CURLOPT(CURLOPT_OPENSOCKETDATA, CURLOPTTYPE_CBPOINT, 164),
1639 
1640   /* POST volatile input fields. */
1641   CURLOPT(CURLOPT_COPYPOSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 165),
1642 
1643   /* set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy */
1644   CURLOPT(CURLOPT_PROXY_TRANSFER_MODE, CURLOPTTYPE_LONG, 166),
1645 
1646   /* Callback function for seeking in the input stream */
1647   CURLOPT(CURLOPT_SEEKFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 167),
1648   CURLOPT(CURLOPT_SEEKDATA, CURLOPTTYPE_CBPOINT, 168),
1649 
1650   /* CRL file */
1651   CURLOPT(CURLOPT_CRLFILE, CURLOPTTYPE_STRINGPOINT, 169),
1652 
1653   /* Issuer certificate */
1654   CURLOPT(CURLOPT_ISSUERCERT, CURLOPTTYPE_STRINGPOINT, 170),
1655 
1656   /* (IPv6) Address scope */
1657   CURLOPT(CURLOPT_ADDRESS_SCOPE, CURLOPTTYPE_LONG, 171),
1658 
1659   /* Collect certificate chain info and allow it to get retrievable with
1660      CURLINFO_CERTINFO after the transfer is complete. */
1661   CURLOPT(CURLOPT_CERTINFO, CURLOPTTYPE_LONG, 172),
1662 
1663   /* "name" and "pwd" to use when fetching. */
1664   CURLOPT(CURLOPT_USERNAME, CURLOPTTYPE_STRINGPOINT, 173),
1665   CURLOPT(CURLOPT_PASSWORD, CURLOPTTYPE_STRINGPOINT, 174),
1666 
1667     /* "name" and "pwd" to use with Proxy when fetching. */
1668   CURLOPT(CURLOPT_PROXYUSERNAME, CURLOPTTYPE_STRINGPOINT, 175),
1669   CURLOPT(CURLOPT_PROXYPASSWORD, CURLOPTTYPE_STRINGPOINT, 176),
1670 
1671   /* Comma separated list of hostnames defining no-proxy zones. These should
1672      match both hostnames directly, and hostnames within a domain. For
1673      example, local.com will match local.com and www.local.com, but NOT
1674      notlocal.com or www.notlocal.com. For compatibility with other
1675      implementations of this, .local.com will be considered to be the same as
1676      local.com. A single * is the only valid wildcard, and effectively
1677      disables the use of proxy. */
1678   CURLOPT(CURLOPT_NOPROXY, CURLOPTTYPE_STRINGPOINT, 177),
1679 
1680   /* block size for TFTP transfers */
1681   CURLOPT(CURLOPT_TFTP_BLKSIZE, CURLOPTTYPE_LONG, 178),
1682 
1683   /* Socks Service */
1684   /* DEPRECATED, do not use! */
1685   CURLOPT(CURLOPT_SOCKS5_GSSAPI_SERVICE, CURLOPTTYPE_STRINGPOINT, 179),
1686 
1687   /* Socks Service */
1688   CURLOPT(CURLOPT_SOCKS5_GSSAPI_NEC, CURLOPTTYPE_LONG, 180),
1689 
1690   /* set the bitmask for the protocols that are allowed to be used for the
1691      transfer, which thus helps the app which takes URLs from users or other
1692      external inputs and want to restrict what protocol(s) to deal
1693      with. Defaults to CURLPROTO_ALL. */
1694   CURLOPT(CURLOPT_PROTOCOLS, CURLOPTTYPE_LONG, 181),
1695 
1696   /* set the bitmask for the protocols that libcurl is allowed to follow to,
1697      as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
1698      to be set in both bitmasks to be allowed to get redirected to. */
1699   CURLOPT(CURLOPT_REDIR_PROTOCOLS, CURLOPTTYPE_LONG, 182),
1700 
1701   /* set the SSH knownhost file name to use */
1702   CURLOPT(CURLOPT_SSH_KNOWNHOSTS, CURLOPTTYPE_STRINGPOINT, 183),
1703 
1704   /* set the SSH host key callback, must point to a curl_sshkeycallback
1705      function */
1706   CURLOPT(CURLOPT_SSH_KEYFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 184),
1707 
1708   /* set the SSH host key callback custom pointer */
1709   CURLOPT(CURLOPT_SSH_KEYDATA, CURLOPTTYPE_CBPOINT, 185),
1710 
1711   /* set the SMTP mail originator */
1712   CURLOPT(CURLOPT_MAIL_FROM, CURLOPTTYPE_STRINGPOINT, 186),
1713 
1714   /* set the list of SMTP mail receiver(s) */
1715   CURLOPT(CURLOPT_MAIL_RCPT, CURLOPTTYPE_SLISTPOINT, 187),
1716 
1717   /* FTP: send PRET before PASV */
1718   CURLOPT(CURLOPT_FTP_USE_PRET, CURLOPTTYPE_LONG, 188),
1719 
1720   /* RTSP request method (OPTIONS, SETUP, PLAY, etc...) */
1721   CURLOPT(CURLOPT_RTSP_REQUEST, CURLOPTTYPE_VALUES, 189),
1722 
1723   /* The RTSP session identifier */
1724   CURLOPT(CURLOPT_RTSP_SESSION_ID, CURLOPTTYPE_STRINGPOINT, 190),
1725 
1726   /* The RTSP stream URI */
1727   CURLOPT(CURLOPT_RTSP_STREAM_URI, CURLOPTTYPE_STRINGPOINT, 191),
1728 
1729   /* The Transport: header to use in RTSP requests */
1730   CURLOPT(CURLOPT_RTSP_TRANSPORT, CURLOPTTYPE_STRINGPOINT, 192),
1731 
1732   /* Manually initialize the client RTSP CSeq for this handle */
1733   CURLOPT(CURLOPT_RTSP_CLIENT_CSEQ, CURLOPTTYPE_LONG, 193),
1734 
1735   /* Manually initialize the server RTSP CSeq for this handle */
1736   CURLOPT(CURLOPT_RTSP_SERVER_CSEQ, CURLOPTTYPE_LONG, 194),
1737 
1738   /* The stream to pass to INTERLEAVEFUNCTION. */
1739   CURLOPT(CURLOPT_INTERLEAVEDATA, CURLOPTTYPE_CBPOINT, 195),
1740 
1741   /* Let the application define a custom write method for RTP data */
1742   CURLOPT(CURLOPT_INTERLEAVEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 196),
1743 
1744   /* Turn on wildcard matching */
1745   CURLOPT(CURLOPT_WILDCARDMATCH, CURLOPTTYPE_LONG, 197),
1746 
1747   /* Directory matching callback called before downloading of an
1748      individual file (chunk) started */
1749   CURLOPT(CURLOPT_CHUNK_BGN_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 198),
1750 
1751   /* Directory matching callback called after the file (chunk)
1752      was downloaded, or skipped */
1753   CURLOPT(CURLOPT_CHUNK_END_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 199),
1754 
1755   /* Change match (fnmatch-like) callback for wildcard matching */
1756   CURLOPT(CURLOPT_FNMATCH_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 200),
1757 
1758   /* Let the application define custom chunk data pointer */
1759   CURLOPT(CURLOPT_CHUNK_DATA, CURLOPTTYPE_CBPOINT, 201),
1760 
1761   /* FNMATCH_FUNCTION user pointer */
1762   CURLOPT(CURLOPT_FNMATCH_DATA, CURLOPTTYPE_CBPOINT, 202),
1763 
1764   /* send linked-list of name:port:address sets */
1765   CURLOPT(CURLOPT_RESOLVE, CURLOPTTYPE_SLISTPOINT, 203),
1766 
1767   /* Set a username for authenticated TLS */
1768   CURLOPT(CURLOPT_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 204),
1769 
1770   /* Set a password for authenticated TLS */
1771   CURLOPT(CURLOPT_TLSAUTH_PASSWORD, CURLOPTTYPE_STRINGPOINT, 205),
1772 
1773   /* Set authentication type for authenticated TLS */
1774   CURLOPT(CURLOPT_TLSAUTH_TYPE, CURLOPTTYPE_STRINGPOINT, 206),
1775 
1776   /* Set to 1 to enable the "TE:" header in HTTP requests to ask for
1777      compressed transfer-encoded responses. Set to 0 to disable the use of TE:
1778      in outgoing requests. The current default is 0, but it might change in a
1779      future libcurl release.
1780 
1781      libcurl will ask for the compressed methods it knows of, and if that
1782      isn't any, it will not ask for transfer-encoding at all even if this
1783      option is set to 1.
1784 
1785   */
1786   CURLOPT(CURLOPT_TRANSFER_ENCODING, CURLOPTTYPE_LONG, 207),
1787 
1788   /* Callback function for closing socket (instead of close(2)). The callback
1789      should have type curl_closesocket_callback */
1790   CURLOPT(CURLOPT_CLOSESOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 208),
1791   CURLOPT(CURLOPT_CLOSESOCKETDATA, CURLOPTTYPE_CBPOINT, 209),
1792 
1793   /* allow GSSAPI credential delegation */
1794   CURLOPT(CURLOPT_GSSAPI_DELEGATION, CURLOPTTYPE_VALUES, 210),
1795 
1796   /* Set the name servers to use for DNS resolution */
1797   CURLOPT(CURLOPT_DNS_SERVERS, CURLOPTTYPE_STRINGPOINT, 211),
1798 
1799   /* Time-out accept operations (currently for FTP only) after this amount
1800      of milliseconds. */
1801   CURLOPT(CURLOPT_ACCEPTTIMEOUT_MS, CURLOPTTYPE_LONG, 212),
1802 
1803   /* Set TCP keepalive */
1804   CURLOPT(CURLOPT_TCP_KEEPALIVE, CURLOPTTYPE_LONG, 213),
1805 
1806   /* non-universal keepalive knobs (Linux, AIX, HP-UX, more) */
1807   CURLOPT(CURLOPT_TCP_KEEPIDLE, CURLOPTTYPE_LONG, 214),
1808   CURLOPT(CURLOPT_TCP_KEEPINTVL, CURLOPTTYPE_LONG, 215),
1809 
1810   /* Enable/disable specific SSL features with a bitmask, see CURLSSLOPT_* */
1811   CURLOPT(CURLOPT_SSL_OPTIONS, CURLOPTTYPE_VALUES, 216),
1812 
1813   /* Set the SMTP auth originator */
1814   CURLOPT(CURLOPT_MAIL_AUTH, CURLOPTTYPE_STRINGPOINT, 217),
1815 
1816   /* Enable/disable SASL initial response */
1817   CURLOPT(CURLOPT_SASL_IR, CURLOPTTYPE_LONG, 218),
1818 
1819   /* Function that will be called instead of the internal progress display
1820    * function. This function should be defined as the curl_xferinfo_callback
1821    * prototype defines. (Deprecates CURLOPT_PROGRESSFUNCTION) */
1822   CURLOPT(CURLOPT_XFERINFOFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 219),
1823 
1824   /* The XOAUTH2 bearer token */
1825   CURLOPT(CURLOPT_XOAUTH2_BEARER, CURLOPTTYPE_STRINGPOINT, 220),
1826 
1827   /* Set the interface string to use as outgoing network
1828    * interface for DNS requests.
1829    * Only supported by the c-ares DNS backend */
1830   CURLOPT(CURLOPT_DNS_INTERFACE, CURLOPTTYPE_STRINGPOINT, 221),
1831 
1832   /* Set the local IPv4 address to use for outgoing DNS requests.
1833    * Only supported by the c-ares DNS backend */
1834   CURLOPT(CURLOPT_DNS_LOCAL_IP4, CURLOPTTYPE_STRINGPOINT, 222),
1835 
1836   /* Set the local IPv6 address to use for outgoing DNS requests.
1837    * Only supported by the c-ares DNS backend */
1838   CURLOPT(CURLOPT_DNS_LOCAL_IP6, CURLOPTTYPE_STRINGPOINT, 223),
1839 
1840   /* Set authentication options directly */
1841   CURLOPT(CURLOPT_LOGIN_OPTIONS, CURLOPTTYPE_STRINGPOINT, 224),
1842 
1843   /* Enable/disable TLS NPN extension (http2 over ssl might fail without) */
1844   CURLOPT(CURLOPT_SSL_ENABLE_NPN, CURLOPTTYPE_LONG, 225),
1845 
1846   /* Enable/disable TLS ALPN extension (http2 over ssl might fail without) */
1847   CURLOPT(CURLOPT_SSL_ENABLE_ALPN, CURLOPTTYPE_LONG, 226),
1848 
1849   /* Time to wait for a response to a HTTP request containing an
1850    * Expect: 100-continue header before sending the data anyway. */
1851   CURLOPT(CURLOPT_EXPECT_100_TIMEOUT_MS, CURLOPTTYPE_LONG, 227),
1852 
1853   /* This points to a linked list of headers used for proxy requests only,
1854      struct curl_slist kind */
1855   CURLOPT(CURLOPT_PROXYHEADER, CURLOPTTYPE_SLISTPOINT, 228),
1856 
1857   /* Pass in a bitmask of "header options" */
1858   CURLOPT(CURLOPT_HEADEROPT, CURLOPTTYPE_VALUES, 229),
1859 
1860   /* The public key in DER form used to validate the peer public key
1861      this option is used only if SSL_VERIFYPEER is true */
1862   CURLOPT(CURLOPT_PINNEDPUBLICKEY, CURLOPTTYPE_STRINGPOINT, 230),
1863 
1864   /* Path to Unix domain socket */
1865   CURLOPT(CURLOPT_UNIX_SOCKET_PATH, CURLOPTTYPE_STRINGPOINT, 231),
1866 
1867   /* Set if we should verify the certificate status. */
1868   CURLOPT(CURLOPT_SSL_VERIFYSTATUS, CURLOPTTYPE_LONG, 232),
1869 
1870   /* Set if we should enable TLS false start. */
1871   CURLOPT(CURLOPT_SSL_FALSESTART, CURLOPTTYPE_LONG, 233),
1872 
1873   /* Do not squash dot-dot sequences */
1874   CURLOPT(CURLOPT_PATH_AS_IS, CURLOPTTYPE_LONG, 234),
1875 
1876   /* Proxy Service Name */
1877   CURLOPT(CURLOPT_PROXY_SERVICE_NAME, CURLOPTTYPE_STRINGPOINT, 235),
1878 
1879   /* Service Name */
1880   CURLOPT(CURLOPT_SERVICE_NAME, CURLOPTTYPE_STRINGPOINT, 236),
1881 
1882   /* Wait/don't wait for pipe/mutex to clarify */
1883   CURLOPT(CURLOPT_PIPEWAIT, CURLOPTTYPE_LONG, 237),
1884 
1885   /* Set the protocol used when curl is given a URL without a protocol */
1886   CURLOPT(CURLOPT_DEFAULT_PROTOCOL, CURLOPTTYPE_STRINGPOINT, 238),
1887 
1888   /* Set stream weight, 1 - 256 (default is 16) */
1889   CURLOPT(CURLOPT_STREAM_WEIGHT, CURLOPTTYPE_LONG, 239),
1890 
1891   /* Set stream dependency on another CURL handle */
1892   CURLOPT(CURLOPT_STREAM_DEPENDS, CURLOPTTYPE_OBJECTPOINT, 240),
1893 
1894   /* Set E-xclusive stream dependency on another CURL handle */
1895   CURLOPT(CURLOPT_STREAM_DEPENDS_E, CURLOPTTYPE_OBJECTPOINT, 241),
1896 
1897   /* Do not send any tftp option requests to the server */
1898   CURLOPT(CURLOPT_TFTP_NO_OPTIONS, CURLOPTTYPE_LONG, 242),
1899 
1900   /* Linked-list of host:port:connect-to-host:connect-to-port,
1901      overrides the URL's host:port (only for the network layer) */
1902   CURLOPT(CURLOPT_CONNECT_TO, CURLOPTTYPE_SLISTPOINT, 243),
1903 
1904   /* Set TCP Fast Open */
1905   CURLOPT(CURLOPT_TCP_FASTOPEN, CURLOPTTYPE_LONG, 244),
1906 
1907   /* Continue to send data if the server responds early with an
1908    * HTTP status code >= 300 */
1909   CURLOPT(CURLOPT_KEEP_SENDING_ON_ERROR, CURLOPTTYPE_LONG, 245),
1910 
1911   /* The CApath or CAfile used to validate the proxy certificate
1912      this option is used only if PROXY_SSL_VERIFYPEER is true */
1913   CURLOPT(CURLOPT_PROXY_CAINFO, CURLOPTTYPE_STRINGPOINT, 246),
1914 
1915   /* The CApath directory used to validate the proxy certificate
1916      this option is used only if PROXY_SSL_VERIFYPEER is true */
1917   CURLOPT(CURLOPT_PROXY_CAPATH, CURLOPTTYPE_STRINGPOINT, 247),
1918 
1919   /* Set if we should verify the proxy in ssl handshake,
1920      set 1 to verify. */
1921   CURLOPT(CURLOPT_PROXY_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 248),
1922 
1923   /* Set if we should verify the Common name from the proxy certificate in ssl
1924    * handshake, set 1 to check existence, 2 to ensure that it matches
1925    * the provided hostname. */
1926   CURLOPT(CURLOPT_PROXY_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 249),
1927 
1928   /* What version to specifically try to use for proxy.
1929      See CURL_SSLVERSION defines below. */
1930   CURLOPT(CURLOPT_PROXY_SSLVERSION, CURLOPTTYPE_VALUES, 250),
1931 
1932   /* Set a username for authenticated TLS for proxy */
1933   CURLOPT(CURLOPT_PROXY_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 251),
1934 
1935   /* Set a password for authenticated TLS for proxy */
1936   CURLOPT(CURLOPT_PROXY_TLSAUTH_PASSWORD, CURLOPTTYPE_STRINGPOINT, 252),
1937 
1938   /* Set authentication type for authenticated TLS for proxy */
1939   CURLOPT(CURLOPT_PROXY_TLSAUTH_TYPE, CURLOPTTYPE_STRINGPOINT, 253),
1940 
1941   /* name of the file keeping your private SSL-certificate for proxy */
1942   CURLOPT(CURLOPT_PROXY_SSLCERT, CURLOPTTYPE_STRINGPOINT, 254),
1943 
1944   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") for
1945      proxy */
1946   CURLOPT(CURLOPT_PROXY_SSLCERTTYPE, CURLOPTTYPE_STRINGPOINT, 255),
1947 
1948   /* name of the file keeping your private SSL-key for proxy */
1949   CURLOPT(CURLOPT_PROXY_SSLKEY, CURLOPTTYPE_STRINGPOINT, 256),
1950 
1951   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") for
1952      proxy */
1953   CURLOPT(CURLOPT_PROXY_SSLKEYTYPE, CURLOPTTYPE_STRINGPOINT, 257),
1954 
1955   /* password for the SSL private key for proxy */
1956   CURLOPT(CURLOPT_PROXY_KEYPASSWD, CURLOPTTYPE_STRINGPOINT, 258),
1957 
1958   /* Specify which SSL ciphers to use for proxy */
1959   CURLOPT(CURLOPT_PROXY_SSL_CIPHER_LIST, CURLOPTTYPE_STRINGPOINT, 259),
1960 
1961   /* CRL file for proxy */
1962   CURLOPT(CURLOPT_PROXY_CRLFILE, CURLOPTTYPE_STRINGPOINT, 260),
1963 
1964   /* Enable/disable specific SSL features with a bitmask for proxy, see
1965      CURLSSLOPT_* */
1966   CURLOPT(CURLOPT_PROXY_SSL_OPTIONS, CURLOPTTYPE_LONG, 261),
1967 
1968   /* Name of pre proxy to use. */
1969   CURLOPT(CURLOPT_PRE_PROXY, CURLOPTTYPE_STRINGPOINT, 262),
1970 
1971   /* The public key in DER form used to validate the proxy public key
1972      this option is used only if PROXY_SSL_VERIFYPEER is true */
1973   CURLOPT(CURLOPT_PROXY_PINNEDPUBLICKEY, CURLOPTTYPE_STRINGPOINT, 263),
1974 
1975   /* Path to an abstract Unix domain socket */
1976   CURLOPT(CURLOPT_ABSTRACT_UNIX_SOCKET, CURLOPTTYPE_STRINGPOINT, 264),
1977 
1978   /* Suppress proxy CONNECT response headers from user callbacks */
1979   CURLOPT(CURLOPT_SUPPRESS_CONNECT_HEADERS, CURLOPTTYPE_LONG, 265),
1980 
1981   /* The request target, instead of extracted from the URL */
1982   CURLOPT(CURLOPT_REQUEST_TARGET, CURLOPTTYPE_STRINGPOINT, 266),
1983 
1984   /* bitmask of allowed auth methods for connections to SOCKS5 proxies */
1985   CURLOPT(CURLOPT_SOCKS5_AUTH, CURLOPTTYPE_LONG, 267),
1986 
1987   /* Enable/disable SSH compression */
1988   CURLOPT(CURLOPT_SSH_COMPRESSION, CURLOPTTYPE_LONG, 268),
1989 
1990   /* Post MIME data. */
1991   CURLOPT(CURLOPT_MIMEPOST, CURLOPTTYPE_OBJECTPOINT, 269),
1992 
1993   /* Time to use with the CURLOPT_TIMECONDITION. Specified in number of
1994      seconds since 1 Jan 1970. */
1995   CURLOPT(CURLOPT_TIMEVALUE_LARGE, CURLOPTTYPE_OFF_T, 270),
1996 
1997   /* Head start in milliseconds to give happy eyeballs. */
1998   CURLOPT(CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS, CURLOPTTYPE_LONG, 271),
1999 
2000   /* Function that will be called before a resolver request is made */
2001   CURLOPT(CURLOPT_RESOLVER_START_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 272),
2002 
2003   /* User data to pass to the resolver start callback. */
2004   CURLOPT(CURLOPT_RESOLVER_START_DATA, CURLOPTTYPE_CBPOINT, 273),
2005 
2006   /* send HAProxy PROXY protocol header? */
2007   CURLOPT(CURLOPT_HAPROXYPROTOCOL, CURLOPTTYPE_LONG, 274),
2008 
2009   /* shuffle addresses before use when DNS returns multiple */
2010   CURLOPT(CURLOPT_DNS_SHUFFLE_ADDRESSES, CURLOPTTYPE_LONG, 275),
2011 
2012   /* Specify which TLS 1.3 ciphers suites to use */
2013   CURLOPT(CURLOPT_TLS13_CIPHERS, CURLOPTTYPE_STRINGPOINT, 276),
2014   CURLOPT(CURLOPT_PROXY_TLS13_CIPHERS, CURLOPTTYPE_STRINGPOINT, 277),
2015 
2016   /* Disallow specifying username/login in URL. */
2017   CURLOPT(CURLOPT_DISALLOW_USERNAME_IN_URL, CURLOPTTYPE_LONG, 278),
2018 
2019   /* DNS-over-HTTPS URL */
2020   CURLOPT(CURLOPT_DOH_URL, CURLOPTTYPE_STRINGPOINT, 279),
2021 
2022   /* Preferred buffer size to use for uploads */
2023   CURLOPT(CURLOPT_UPLOAD_BUFFERSIZE, CURLOPTTYPE_LONG, 280),
2024 
2025   /* Time in ms between connection upkeep calls for long-lived connections. */
2026   CURLOPT(CURLOPT_UPKEEP_INTERVAL_MS, CURLOPTTYPE_LONG, 281),
2027 
2028   /* Specify URL using CURL URL API. */
2029   CURLOPT(CURLOPT_CURLU, CURLOPTTYPE_OBJECTPOINT, 282),
2030 
2031   /* add trailing data just after no more data is available */
2032   CURLOPT(CURLOPT_TRAILERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 283),
2033 
2034   /* pointer to be passed to HTTP_TRAILER_FUNCTION */
2035   CURLOPT(CURLOPT_TRAILERDATA, CURLOPTTYPE_CBPOINT, 284),
2036 
2037   /* set this to 1L to allow HTTP/0.9 responses or 0L to disallow */
2038   CURLOPT(CURLOPT_HTTP09_ALLOWED, CURLOPTTYPE_LONG, 285),
2039 
2040   /* alt-svc control bitmask */
2041   CURLOPT(CURLOPT_ALTSVC_CTRL, CURLOPTTYPE_LONG, 286),
2042 
2043   /* alt-svc cache file name to possibly read from/write to */
2044   CURLOPT(CURLOPT_ALTSVC, CURLOPTTYPE_STRINGPOINT, 287),
2045 
2046   /* maximum age of a connection to consider it for reuse (in seconds) */
2047   CURLOPT(CURLOPT_MAXAGE_CONN, CURLOPTTYPE_LONG, 288),
2048 
2049   /* SASL authorisation identity */
2050   CURLOPT(CURLOPT_SASL_AUTHZID, CURLOPTTYPE_STRINGPOINT, 289),
2051 
2052   /* allow RCPT TO command to fail for some recipients */
2053   CURLOPT(CURLOPT_MAIL_RCPT_ALLLOWFAILS, CURLOPTTYPE_LONG, 290),
2054 
2055   /* the private SSL-certificate as a "blob" */
2056   CURLOPT(CURLOPT_SSLCERT_BLOB, CURLOPTTYPE_BLOB, 291),
2057   CURLOPT(CURLOPT_SSLKEY_BLOB, CURLOPTTYPE_BLOB, 292),
2058   CURLOPT(CURLOPT_PROXY_SSLCERT_BLOB, CURLOPTTYPE_BLOB, 293),
2059   CURLOPT(CURLOPT_PROXY_SSLKEY_BLOB, CURLOPTTYPE_BLOB, 294),
2060   CURLOPT(CURLOPT_ISSUERCERT_BLOB, CURLOPTTYPE_BLOB, 295),
2061 
2062   /* Issuer certificate for proxy */
2063   CURLOPT(CURLOPT_PROXY_ISSUERCERT, CURLOPTTYPE_STRINGPOINT, 296),
2064   CURLOPT(CURLOPT_PROXY_ISSUERCERT_BLOB, CURLOPTTYPE_BLOB, 297),
2065 
2066   /* the EC curves requested by the TLS client (RFC 8422, 5.1);
2067    * OpenSSL support via 'set_groups'/'set_curves':
2068    * https://www.openssl.org/docs/manmaster/man3/SSL_CTX_set1_groups.html
2069    */
2070   CURLOPT(CURLOPT_SSL_EC_CURVES, CURLOPTTYPE_STRINGPOINT, 298),
2071 
2072   /* HSTS bitmask */
2073   CURLOPT(CURLOPT_HSTS_CTRL, CURLOPTTYPE_LONG, 299),
2074   /* HSTS file name */
2075   CURLOPT(CURLOPT_HSTS, CURLOPTTYPE_STRINGPOINT, 300),
2076 
2077   /* HSTS read callback */
2078   CURLOPT(CURLOPT_HSTSREADFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 301),
2079   CURLOPT(CURLOPT_HSTSREADDATA, CURLOPTTYPE_CBPOINT, 302),
2080 
2081   /* HSTS write callback */
2082   CURLOPT(CURLOPT_HSTSWRITEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 303),
2083   CURLOPT(CURLOPT_HSTSWRITEDATA, CURLOPTTYPE_CBPOINT, 304),
2084 
2085   /* Parameters for V4 signature */
2086   CURLOPT(CURLOPT_AWS_SIGV4, CURLOPTTYPE_STRINGPOINT, 305),
2087 
2088   /* Same as CURLOPT_SSL_VERIFYPEER but for DoH (DNS-over-HTTPS) servers. */
2089   CURLOPT(CURLOPT_DOH_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 306),
2090 
2091   /* Same as CURLOPT_SSL_VERIFYHOST but for DoH (DNS-over-HTTPS) servers. */
2092   CURLOPT(CURLOPT_DOH_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 307),
2093 
2094   /* Same as CURLOPT_SSL_VERIFYSTATUS but for DoH (DNS-over-HTTPS) servers. */
2095   CURLOPT(CURLOPT_DOH_SSL_VERIFYSTATUS, CURLOPTTYPE_LONG, 308),
2096 
2097   /* The CA certificates as "blob" used to validate the peer certificate
2098      this option is used only if SSL_VERIFYPEER is true */
2099   CURLOPT(CURLOPT_CAINFO_BLOB, CURLOPTTYPE_BLOB, 309),
2100 
2101   /* The CA certificates as "blob" used to validate the proxy certificate
2102      this option is used only if PROXY_SSL_VERIFYPEER is true */
2103   CURLOPT(CURLOPT_PROXY_CAINFO_BLOB, CURLOPTTYPE_BLOB, 310),
2104 
2105   CURLOPT_LASTENTRY /* the last unused */
2106 } CURLoption;
2107 
2108 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
2109                           the obsolete stuff removed! */
2110 
2111 /* Backwards compatibility with older names */
2112 /* These are scheduled to disappear by 2011 */
2113 
2114 /* This was added in version 7.19.1 */
2115 #define CURLOPT_POST301 CURLOPT_POSTREDIR
2116 
2117 /* These are scheduled to disappear by 2009 */
2118 
2119 /* The following were added in 7.17.0 */
2120 #define CURLOPT_SSLKEYPASSWD CURLOPT_KEYPASSWD
2121 #define CURLOPT_FTPAPPEND CURLOPT_APPEND
2122 #define CURLOPT_FTPLISTONLY CURLOPT_DIRLISTONLY
2123 #define CURLOPT_FTP_SSL CURLOPT_USE_SSL
2124 
2125 /* The following were added earlier */
2126 
2127 #define CURLOPT_SSLCERTPASSWD CURLOPT_KEYPASSWD
2128 #define CURLOPT_KRB4LEVEL CURLOPT_KRBLEVEL
2129 
2130 #else
2131 /* This is set if CURL_NO_OLDIES is defined at compile-time */
2132 #undef CURLOPT_DNS_USE_GLOBAL_CACHE /* soon obsolete */
2133 #endif
2134 
2135 
2136   /* Below here follows defines for the CURLOPT_IPRESOLVE option. If a host
2137      name resolves addresses using more than one IP protocol version, this
2138      option might be handy to force libcurl to use a specific IP version. */
2139 #define CURL_IPRESOLVE_WHATEVER 0 /* default, uses addresses to all IP
2140                                      versions that your system allows */
2141 #define CURL_IPRESOLVE_V4       1 /* uses only IPv4 addresses/connections */
2142 #define CURL_IPRESOLVE_V6       2 /* uses only IPv6 addresses/connections */
2143 
2144   /* three convenient "aliases" that follow the name scheme better */
2145 #define CURLOPT_RTSPHEADER CURLOPT_HTTPHEADER
2146 
2147   /* These enums are for use with the CURLOPT_HTTP_VERSION option. */
2148 enum {
2149   CURL_HTTP_VERSION_NONE, /* setting this means we don't care, and that we'd
2150                              like the library to choose the best possible
2151                              for us! */
2152   CURL_HTTP_VERSION_1_0,  /* please use HTTP 1.0 in the request */
2153   CURL_HTTP_VERSION_1_1,  /* please use HTTP 1.1 in the request */
2154   CURL_HTTP_VERSION_2_0,  /* please use HTTP 2 in the request */
2155   CURL_HTTP_VERSION_2TLS, /* use version 2 for HTTPS, version 1.1 for HTTP */
2156   CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE,  /* please use HTTP 2 without HTTP/1.1
2157                                            Upgrade */
2158   CURL_HTTP_VERSION_3 = 30, /* Makes use of explicit HTTP/3 without fallback.
2159                                Use CURLOPT_ALTSVC to enable HTTP/3 upgrade */
2160   CURL_HTTP_VERSION_LAST /* *ILLEGAL* http version */
2161 };
2162 
2163 /* Convenience definition simple because the name of the version is HTTP/2 and
2164    not 2.0. The 2_0 version of the enum name was set while the version was
2165    still planned to be 2.0 and we stick to it for compatibility. */
2166 #define CURL_HTTP_VERSION_2 CURL_HTTP_VERSION_2_0
2167 
2168 /*
2169  * Public API enums for RTSP requests
2170  */
2171 enum {
2172     CURL_RTSPREQ_NONE, /* first in list */
2173     CURL_RTSPREQ_OPTIONS,
2174     CURL_RTSPREQ_DESCRIBE,
2175     CURL_RTSPREQ_ANNOUNCE,
2176     CURL_RTSPREQ_SETUP,
2177     CURL_RTSPREQ_PLAY,
2178     CURL_RTSPREQ_PAUSE,
2179     CURL_RTSPREQ_TEARDOWN,
2180     CURL_RTSPREQ_GET_PARAMETER,
2181     CURL_RTSPREQ_SET_PARAMETER,
2182     CURL_RTSPREQ_RECORD,
2183     CURL_RTSPREQ_RECEIVE,
2184     CURL_RTSPREQ_LAST /* last in list */
2185 };
2186 
2187   /* These enums are for use with the CURLOPT_NETRC option. */
2188 enum CURL_NETRC_OPTION {
2189   CURL_NETRC_IGNORED,     /* The .netrc will never be read.
2190                            * This is the default. */
2191   CURL_NETRC_OPTIONAL,    /* A user:password in the URL will be preferred
2192                            * to one in the .netrc. */
2193   CURL_NETRC_REQUIRED,    /* A user:password in the URL will be ignored.
2194                            * Unless one is set programmatically, the .netrc
2195                            * will be queried. */
2196   CURL_NETRC_LAST
2197 };
2198 
2199 enum {
2200   CURL_SSLVERSION_DEFAULT,
2201   CURL_SSLVERSION_TLSv1, /* TLS 1.x */
2202   CURL_SSLVERSION_SSLv2,
2203   CURL_SSLVERSION_SSLv3,
2204   CURL_SSLVERSION_TLSv1_0,
2205   CURL_SSLVERSION_TLSv1_1,
2206   CURL_SSLVERSION_TLSv1_2,
2207   CURL_SSLVERSION_TLSv1_3,
2208 
2209   CURL_SSLVERSION_LAST /* never use, keep last */
2210 };
2211 
2212 enum {
2213   CURL_SSLVERSION_MAX_NONE =     0,
2214   CURL_SSLVERSION_MAX_DEFAULT =  (CURL_SSLVERSION_TLSv1   << 16),
2215   CURL_SSLVERSION_MAX_TLSv1_0 =  (CURL_SSLVERSION_TLSv1_0 << 16),
2216   CURL_SSLVERSION_MAX_TLSv1_1 =  (CURL_SSLVERSION_TLSv1_1 << 16),
2217   CURL_SSLVERSION_MAX_TLSv1_2 =  (CURL_SSLVERSION_TLSv1_2 << 16),
2218   CURL_SSLVERSION_MAX_TLSv1_3 =  (CURL_SSLVERSION_TLSv1_3 << 16),
2219 
2220   /* never use, keep last */
2221   CURL_SSLVERSION_MAX_LAST =     (CURL_SSLVERSION_LAST    << 16)
2222 };
2223 
2224 enum CURL_TLSAUTH {
2225   CURL_TLSAUTH_NONE,
2226   CURL_TLSAUTH_SRP,
2227   CURL_TLSAUTH_LAST /* never use, keep last */
2228 };
2229 
2230 /* symbols to use with CURLOPT_POSTREDIR.
2231    CURL_REDIR_POST_301, CURL_REDIR_POST_302 and CURL_REDIR_POST_303
2232    can be bitwise ORed so that CURL_REDIR_POST_301 | CURL_REDIR_POST_302
2233    | CURL_REDIR_POST_303 == CURL_REDIR_POST_ALL */
2234 
2235 #define CURL_REDIR_GET_ALL  0
2236 #define CURL_REDIR_POST_301 1
2237 #define CURL_REDIR_POST_302 2
2238 #define CURL_REDIR_POST_303 4
2239 #define CURL_REDIR_POST_ALL \
2240     (CURL_REDIR_POST_301|CURL_REDIR_POST_302|CURL_REDIR_POST_303)
2241 
2242 typedef enum {
2243   CURL_TIMECOND_NONE,
2244 
2245   CURL_TIMECOND_IFMODSINCE,
2246   CURL_TIMECOND_IFUNMODSINCE,
2247   CURL_TIMECOND_LASTMOD,
2248 
2249   CURL_TIMECOND_LAST
2250 } curl_TimeCond;
2251 
2252 /* Special size_t value signaling a null-terminated string. */
2253 #define CURL_ZERO_TERMINATED ((size_t) -1)
2254 
2255 /* curl_strequal() and curl_strnequal() are subject for removal in a future
2256    release */
2257 CURL_EXTERN int curl_strequal(const char *s1, const char *s2);
2258 CURL_EXTERN int curl_strnequal(const char *s1, const char *s2, size_t n);
2259 
2260 /* Mime/form handling support. */
2261 typedef struct curl_mime      curl_mime;      /* Mime context. */
2262 typedef struct curl_mimepart  curl_mimepart;  /* Mime part context. */
2263 
2264 /*
2265  * NAME curl_mime_init()
2266  *
2267  * DESCRIPTION
2268  *
2269  * Create a mime context and return its handle. The easy parameter is the
2270  * target handle.
2271  */
2272 CURL_EXTERN curl_mime *curl_mime_init(CURL *easy);
2273 
2274 /*
2275  * NAME curl_mime_free()
2276  *
2277  * DESCRIPTION
2278  *
2279  * release a mime handle and its substructures.
2280  */
2281 CURL_EXTERN void curl_mime_free(curl_mime *mime);
2282 
2283 /*
2284  * NAME curl_mime_addpart()
2285  *
2286  * DESCRIPTION
2287  *
2288  * Append a new empty part to the given mime context and return a handle to
2289  * the created part.
2290  */
2291 CURL_EXTERN curl_mimepart *curl_mime_addpart(curl_mime *mime);
2292 
2293 /*
2294  * NAME curl_mime_name()
2295  *
2296  * DESCRIPTION
2297  *
2298  * Set mime/form part name.
2299  */
2300 CURL_EXTERN CURLcode curl_mime_name(curl_mimepart *part, const char *name);
2301 
2302 /*
2303  * NAME curl_mime_filename()
2304  *
2305  * DESCRIPTION
2306  *
2307  * Set mime part remote file name.
2308  */
2309 CURL_EXTERN CURLcode curl_mime_filename(curl_mimepart *part,
2310                                         const char *filename);
2311 
2312 /*
2313  * NAME curl_mime_type()
2314  *
2315  * DESCRIPTION
2316  *
2317  * Set mime part type.
2318  */
2319 CURL_EXTERN CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype);
2320 
2321 /*
2322  * NAME curl_mime_encoder()
2323  *
2324  * DESCRIPTION
2325  *
2326  * Set mime data transfer encoder.
2327  */
2328 CURL_EXTERN CURLcode curl_mime_encoder(curl_mimepart *part,
2329                                        const char *encoding);
2330 
2331 /*
2332  * NAME curl_mime_data()
2333  *
2334  * DESCRIPTION
2335  *
2336  * Set mime part data source from memory data,
2337  */
2338 CURL_EXTERN CURLcode curl_mime_data(curl_mimepart *part,
2339                                     const char *data, size_t datasize);
2340 
2341 /*
2342  * NAME curl_mime_filedata()
2343  *
2344  * DESCRIPTION
2345  *
2346  * Set mime part data source from named file.
2347  */
2348 CURL_EXTERN CURLcode curl_mime_filedata(curl_mimepart *part,
2349                                         const char *filename);
2350 
2351 /*
2352  * NAME curl_mime_data_cb()
2353  *
2354  * DESCRIPTION
2355  *
2356  * Set mime part data source from callback function.
2357  */
2358 CURL_EXTERN CURLcode curl_mime_data_cb(curl_mimepart *part,
2359                                        curl_off_t datasize,
2360                                        curl_read_callback readfunc,
2361                                        curl_seek_callback seekfunc,
2362                                        curl_free_callback freefunc,
2363                                        void *arg);
2364 
2365 /*
2366  * NAME curl_mime_subparts()
2367  *
2368  * DESCRIPTION
2369  *
2370  * Set mime part data source from subparts.
2371  */
2372 CURL_EXTERN CURLcode curl_mime_subparts(curl_mimepart *part,
2373                                         curl_mime *subparts);
2374 /*
2375  * NAME curl_mime_headers()
2376  *
2377  * DESCRIPTION
2378  *
2379  * Set mime part headers.
2380  */
2381 CURL_EXTERN CURLcode curl_mime_headers(curl_mimepart *part,
2382                                        struct curl_slist *headers,
2383                                        int take_ownership);
2384 
2385 typedef enum {
2386   CURLFORM_NOTHING,        /********* the first one is unused ************/
2387   CURLFORM_COPYNAME,
2388   CURLFORM_PTRNAME,
2389   CURLFORM_NAMELENGTH,
2390   CURLFORM_COPYCONTENTS,
2391   CURLFORM_PTRCONTENTS,
2392   CURLFORM_CONTENTSLENGTH,
2393   CURLFORM_FILECONTENT,
2394   CURLFORM_ARRAY,
2395   CURLFORM_OBSOLETE,
2396   CURLFORM_FILE,
2397 
2398   CURLFORM_BUFFER,
2399   CURLFORM_BUFFERPTR,
2400   CURLFORM_BUFFERLENGTH,
2401 
2402   CURLFORM_CONTENTTYPE,
2403   CURLFORM_CONTENTHEADER,
2404   CURLFORM_FILENAME,
2405   CURLFORM_END,
2406   CURLFORM_OBSOLETE2,
2407 
2408   CURLFORM_STREAM,
2409   CURLFORM_CONTENTLEN, /* added in 7.46.0, provide a curl_off_t length */
2410 
2411   CURLFORM_LASTENTRY /* the last unused */
2412 } CURLformoption;
2413 
2414 /* structure to be used as parameter for CURLFORM_ARRAY */
2415 struct curl_forms {
2416   CURLformoption option;
2417   const char     *value;
2418 };
2419 
2420 /* use this for multipart formpost building */
2421 /* Returns code for curl_formadd()
2422  *
2423  * Returns:
2424  * CURL_FORMADD_OK             on success
2425  * CURL_FORMADD_MEMORY         if the FormInfo allocation fails
2426  * CURL_FORMADD_OPTION_TWICE   if one option is given twice for one Form
2427  * CURL_FORMADD_NULL           if a null pointer was given for a char
2428  * CURL_FORMADD_MEMORY         if the allocation of a FormInfo struct failed
2429  * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
2430  * CURL_FORMADD_INCOMPLETE     if the some FormInfo is not complete (or error)
2431  * CURL_FORMADD_MEMORY         if a curl_httppost struct cannot be allocated
2432  * CURL_FORMADD_MEMORY         if some allocation for string copying failed.
2433  * CURL_FORMADD_ILLEGAL_ARRAY  if an illegal option is used in an array
2434  *
2435  ***************************************************************************/
2436 typedef enum {
2437   CURL_FORMADD_OK, /* first, no error */
2438 
2439   CURL_FORMADD_MEMORY,
2440   CURL_FORMADD_OPTION_TWICE,
2441   CURL_FORMADD_NULL,
2442   CURL_FORMADD_UNKNOWN_OPTION,
2443   CURL_FORMADD_INCOMPLETE,
2444   CURL_FORMADD_ILLEGAL_ARRAY,
2445   CURL_FORMADD_DISABLED, /* libcurl was built with this disabled */
2446 
2447   CURL_FORMADD_LAST /* last */
2448 } CURLFORMcode;
2449 
2450 /*
2451  * NAME curl_formadd()
2452  *
2453  * DESCRIPTION
2454  *
2455  * Pretty advanced function for building multi-part formposts. Each invoke
2456  * adds one part that together construct a full post. Then use
2457  * CURLOPT_HTTPPOST to send it off to libcurl.
2458  */
2459 CURL_EXTERN CURLFORMcode curl_formadd(struct curl_httppost **httppost,
2460                                       struct curl_httppost **last_post,
2461                                       ...);
2462 
2463 /*
2464  * callback function for curl_formget()
2465  * The void *arg pointer will be the one passed as second argument to
2466  *   curl_formget().
2467  * The character buffer passed to it must not be freed.
2468  * Should return the buffer length passed to it as the argument "len" on
2469  *   success.
2470  */
2471 typedef size_t (*curl_formget_callback)(void *arg, const char *buf,
2472                                         size_t len);
2473 
2474 /*
2475  * NAME curl_formget()
2476  *
2477  * DESCRIPTION
2478  *
2479  * Serialize a curl_httppost struct built with curl_formadd().
2480  * Accepts a void pointer as second argument which will be passed to
2481  * the curl_formget_callback function.
2482  * Returns 0 on success.
2483  */
2484 CURL_EXTERN int curl_formget(struct curl_httppost *form, void *arg,
2485                              curl_formget_callback append);
2486 /*
2487  * NAME curl_formfree()
2488  *
2489  * DESCRIPTION
2490  *
2491  * Free a multipart formpost previously built with curl_formadd().
2492  */
2493 CURL_EXTERN void curl_formfree(struct curl_httppost *form);
2494 
2495 /*
2496  * NAME curl_getenv()
2497  *
2498  * DESCRIPTION
2499  *
2500  * Returns a malloc()'ed string that MUST be curl_free()ed after usage is
2501  * complete. DEPRECATED - see lib/README.curlx
2502  */
2503 CURL_EXTERN char *curl_getenv(const char *variable);
2504 
2505 /*
2506  * NAME curl_version()
2507  *
2508  * DESCRIPTION
2509  *
2510  * Returns a static ascii string of the libcurl version.
2511  */
2512 CURL_EXTERN char *curl_version(void);
2513 
2514 /*
2515  * NAME curl_easy_escape()
2516  *
2517  * DESCRIPTION
2518  *
2519  * Escapes URL strings (converts all letters consider illegal in URLs to their
2520  * %XX versions). This function returns a new allocated string or NULL if an
2521  * error occurred.
2522  */
2523 CURL_EXTERN char *curl_easy_escape(CURL *handle,
2524                                    const char *string,
2525                                    int length);
2526 
2527 /* the previous version: */
2528 CURL_EXTERN char *curl_escape(const char *string,
2529                               int length);
2530 
2531 
2532 /*
2533  * NAME curl_easy_unescape()
2534  *
2535  * DESCRIPTION
2536  *
2537  * Unescapes URL encoding in strings (converts all %XX codes to their 8bit
2538  * versions). This function returns a new allocated string or NULL if an error
2539  * occurred.
2540  * Conversion Note: On non-ASCII platforms the ASCII %XX codes are
2541  * converted into the host encoding.
2542  */
2543 CURL_EXTERN char *curl_easy_unescape(CURL *handle,
2544                                      const char *string,
2545                                      int length,
2546                                      int *outlength);
2547 
2548 /* the previous version */
2549 CURL_EXTERN char *curl_unescape(const char *string,
2550                                 int length);
2551 
2552 /*
2553  * NAME curl_free()
2554  *
2555  * DESCRIPTION
2556  *
2557  * Provided for de-allocation in the same translation unit that did the
2558  * allocation. Added in libcurl 7.10
2559  */
2560 CURL_EXTERN void curl_free(void *p);
2561 
2562 /*
2563  * NAME curl_global_init()
2564  *
2565  * DESCRIPTION
2566  *
2567  * curl_global_init() should be invoked exactly once for each application that
2568  * uses libcurl and before any call of other libcurl functions.
2569  *
2570  * This function is not thread-safe!
2571  */
2572 CURL_EXTERN CURLcode curl_global_init(long flags);
2573 
2574 /*
2575  * NAME curl_global_init_mem()
2576  *
2577  * DESCRIPTION
2578  *
2579  * curl_global_init() or curl_global_init_mem() should be invoked exactly once
2580  * for each application that uses libcurl.  This function can be used to
2581  * initialize libcurl and set user defined memory management callback
2582  * functions.  Users can implement memory management routines to check for
2583  * memory leaks, check for mis-use of the curl library etc.  User registered
2584  * callback routines will be invoked by this library instead of the system
2585  * memory management routines like malloc, free etc.
2586  */
2587 CURL_EXTERN CURLcode curl_global_init_mem(long flags,
2588                                           curl_malloc_callback m,
2589                                           curl_free_callback f,
2590                                           curl_realloc_callback r,
2591                                           curl_strdup_callback s,
2592                                           curl_calloc_callback c);
2593 
2594 /*
2595  * NAME curl_global_cleanup()
2596  *
2597  * DESCRIPTION
2598  *
2599  * curl_global_cleanup() should be invoked exactly once for each application
2600  * that uses libcurl
2601  */
2602 CURL_EXTERN void curl_global_cleanup(void);
2603 
2604 /* linked-list structure for the CURLOPT_QUOTE option (and other) */
2605 struct curl_slist {
2606   char *data;
2607   struct curl_slist *next;
2608 };
2609 
2610 /*
2611  * NAME curl_global_sslset()
2612  *
2613  * DESCRIPTION
2614  *
2615  * When built with multiple SSL backends, curl_global_sslset() allows to
2616  * choose one. This function can only be called once, and it must be called
2617  * *before* curl_global_init().
2618  *
2619  * The backend can be identified by the id (e.g. CURLSSLBACKEND_OPENSSL). The
2620  * backend can also be specified via the name parameter (passing -1 as id).
2621  * If both id and name are specified, the name will be ignored. If neither id
2622  * nor name are specified, the function will fail with
2623  * CURLSSLSET_UNKNOWN_BACKEND and set the "avail" pointer to the
2624  * NULL-terminated list of available backends.
2625  *
2626  * Upon success, the function returns CURLSSLSET_OK.
2627  *
2628  * If the specified SSL backend is not available, the function returns
2629  * CURLSSLSET_UNKNOWN_BACKEND and sets the "avail" pointer to a NULL-terminated
2630  * list of available SSL backends.
2631  *
2632  * The SSL backend can be set only once. If it has already been set, a
2633  * subsequent attempt to change it will result in a CURLSSLSET_TOO_LATE.
2634  */
2635 
2636 struct curl_ssl_backend {
2637   curl_sslbackend id;
2638   const char *name;
2639 };
2640 typedef struct curl_ssl_backend curl_ssl_backend;
2641 
2642 typedef enum {
2643   CURLSSLSET_OK = 0,
2644   CURLSSLSET_UNKNOWN_BACKEND,
2645   CURLSSLSET_TOO_LATE,
2646   CURLSSLSET_NO_BACKENDS /* libcurl was built without any SSL support */
2647 } CURLsslset;
2648 
2649 CURL_EXTERN CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
2650                                           const curl_ssl_backend ***avail);
2651 
2652 /*
2653  * NAME curl_slist_append()
2654  *
2655  * DESCRIPTION
2656  *
2657  * Appends a string to a linked list. If no list exists, it will be created
2658  * first. Returns the new list, after appending.
2659  */
2660 CURL_EXTERN struct curl_slist *curl_slist_append(struct curl_slist *,
2661                                                  const char *);
2662 
2663 /*
2664  * NAME curl_slist_free_all()
2665  *
2666  * DESCRIPTION
2667  *
2668  * free a previously built curl_slist.
2669  */
2670 CURL_EXTERN void curl_slist_free_all(struct curl_slist *);
2671 
2672 /*
2673  * NAME curl_getdate()
2674  *
2675  * DESCRIPTION
2676  *
2677  * Returns the time, in seconds since 1 Jan 1970 of the time string given in
2678  * the first argument. The time argument in the second parameter is unused
2679  * and should be set to NULL.
2680  */
2681 CURL_EXTERN time_t curl_getdate(const char *p, const time_t *unused);
2682 
2683 /* info about the certificate chain, only for OpenSSL, GnuTLS, Schannel, NSS
2684    and GSKit builds. Asked for with CURLOPT_CERTINFO / CURLINFO_CERTINFO */
2685 struct curl_certinfo {
2686   int num_of_certs;             /* number of certificates with information */
2687   struct curl_slist **certinfo; /* for each index in this array, there's a
2688                                    linked list with textual information in the
2689                                    format "name: value" */
2690 };
2691 
2692 /* Information about the SSL library used and the respective internal SSL
2693    handle, which can be used to obtain further information regarding the
2694    connection. Asked for with CURLINFO_TLS_SSL_PTR or CURLINFO_TLS_SESSION. */
2695 struct curl_tlssessioninfo {
2696   curl_sslbackend backend;
2697   void *internals;
2698 };
2699 
2700 #define CURLINFO_STRING   0x100000
2701 #define CURLINFO_LONG     0x200000
2702 #define CURLINFO_DOUBLE   0x300000
2703 #define CURLINFO_SLIST    0x400000
2704 #define CURLINFO_PTR      0x400000 /* same as SLIST */
2705 #define CURLINFO_SOCKET   0x500000
2706 #define CURLINFO_OFF_T    0x600000
2707 #define CURLINFO_MASK     0x0fffff
2708 #define CURLINFO_TYPEMASK 0xf00000
2709 
2710 typedef enum {
2711   CURLINFO_NONE, /* first, never use this */
2712   CURLINFO_EFFECTIVE_URL    = CURLINFO_STRING + 1,
2713   CURLINFO_RESPONSE_CODE    = CURLINFO_LONG   + 2,
2714   CURLINFO_TOTAL_TIME       = CURLINFO_DOUBLE + 3,
2715   CURLINFO_NAMELOOKUP_TIME  = CURLINFO_DOUBLE + 4,
2716   CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
2717   CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
2718   CURLINFO_SIZE_UPLOAD      = CURLINFO_DOUBLE + 7,
2719   CURLINFO_SIZE_UPLOAD_T    = CURLINFO_OFF_T  + 7,
2720   CURLINFO_SIZE_DOWNLOAD    = CURLINFO_DOUBLE + 8,
2721   CURLINFO_SIZE_DOWNLOAD_T  = CURLINFO_OFF_T  + 8,
2722   CURLINFO_SPEED_DOWNLOAD   = CURLINFO_DOUBLE + 9,
2723   CURLINFO_SPEED_DOWNLOAD_T = CURLINFO_OFF_T  + 9,
2724   CURLINFO_SPEED_UPLOAD     = CURLINFO_DOUBLE + 10,
2725   CURLINFO_SPEED_UPLOAD_T   = CURLINFO_OFF_T  + 10,
2726   CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
2727   CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
2728   CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
2729   CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
2730   CURLINFO_FILETIME_T       = CURLINFO_OFF_T  + 14,
2731   CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
2732   CURLINFO_CONTENT_LENGTH_DOWNLOAD_T = CURLINFO_OFF_T  + 15,
2733   CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
2734   CURLINFO_CONTENT_LENGTH_UPLOAD_T   = CURLINFO_OFF_T  + 16,
2735   CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
2736   CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
2737   CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
2738   CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
2739   CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
2740   CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
2741   CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
2742   CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
2743   CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
2744   CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
2745   CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
2746   CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
2747   CURLINFO_LASTSOCKET       = CURLINFO_LONG   + 29,
2748   CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
2749   CURLINFO_REDIRECT_URL     = CURLINFO_STRING + 31,
2750   CURLINFO_PRIMARY_IP       = CURLINFO_STRING + 32,
2751   CURLINFO_APPCONNECT_TIME  = CURLINFO_DOUBLE + 33,
2752   CURLINFO_CERTINFO         = CURLINFO_PTR    + 34,
2753   CURLINFO_CONDITION_UNMET  = CURLINFO_LONG   + 35,
2754   CURLINFO_RTSP_SESSION_ID  = CURLINFO_STRING + 36,
2755   CURLINFO_RTSP_CLIENT_CSEQ = CURLINFO_LONG   + 37,
2756   CURLINFO_RTSP_SERVER_CSEQ = CURLINFO_LONG   + 38,
2757   CURLINFO_RTSP_CSEQ_RECV   = CURLINFO_LONG   + 39,
2758   CURLINFO_PRIMARY_PORT     = CURLINFO_LONG   + 40,
2759   CURLINFO_LOCAL_IP         = CURLINFO_STRING + 41,
2760   CURLINFO_LOCAL_PORT       = CURLINFO_LONG   + 42,
2761   CURLINFO_TLS_SESSION      = CURLINFO_PTR    + 43,
2762   CURLINFO_ACTIVESOCKET     = CURLINFO_SOCKET + 44,
2763   CURLINFO_TLS_SSL_PTR      = CURLINFO_PTR    + 45,
2764   CURLINFO_HTTP_VERSION     = CURLINFO_LONG   + 46,
2765   CURLINFO_PROXY_SSL_VERIFYRESULT = CURLINFO_LONG + 47,
2766   CURLINFO_PROTOCOL         = CURLINFO_LONG   + 48,
2767   CURLINFO_SCHEME           = CURLINFO_STRING + 49,
2768   CURLINFO_TOTAL_TIME_T     = CURLINFO_OFF_T + 50,
2769   CURLINFO_NAMELOOKUP_TIME_T = CURLINFO_OFF_T + 51,
2770   CURLINFO_CONNECT_TIME_T   = CURLINFO_OFF_T + 52,
2771   CURLINFO_PRETRANSFER_TIME_T = CURLINFO_OFF_T + 53,
2772   CURLINFO_STARTTRANSFER_TIME_T = CURLINFO_OFF_T + 54,
2773   CURLINFO_REDIRECT_TIME_T  = CURLINFO_OFF_T + 55,
2774   CURLINFO_APPCONNECT_TIME_T = CURLINFO_OFF_T + 56,
2775   CURLINFO_RETRY_AFTER      = CURLINFO_OFF_T + 57,
2776   CURLINFO_EFFECTIVE_METHOD = CURLINFO_STRING + 58,
2777   CURLINFO_PROXY_ERROR      = CURLINFO_LONG + 59,
2778   CURLINFO_REFERER          = CURLINFO_STRING + 60,
2779 
2780   CURLINFO_LASTONE          = 60
2781 } CURLINFO;
2782 
2783 /* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
2784    CURLINFO_HTTP_CODE */
2785 #define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE
2786 
2787 typedef enum {
2788   CURLCLOSEPOLICY_NONE, /* first, never use this */
2789 
2790   CURLCLOSEPOLICY_OLDEST,
2791   CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
2792   CURLCLOSEPOLICY_LEAST_TRAFFIC,
2793   CURLCLOSEPOLICY_SLOWEST,
2794   CURLCLOSEPOLICY_CALLBACK,
2795 
2796   CURLCLOSEPOLICY_LAST /* last, never use this */
2797 } curl_closepolicy;
2798 
2799 #define CURL_GLOBAL_SSL (1<<0) /* no purpose since since 7.57.0 */
2800 #define CURL_GLOBAL_WIN32 (1<<1)
2801 #define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
2802 #define CURL_GLOBAL_NOTHING 0
2803 #define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL
2804 #define CURL_GLOBAL_ACK_EINTR (1<<2)
2805 
2806 
2807 /*****************************************************************************
2808  * Setup defines, protos etc for the sharing stuff.
2809  */
2810 
2811 /* Different data locks for a single share */
2812 typedef enum {
2813   CURL_LOCK_DATA_NONE = 0,
2814   /*  CURL_LOCK_DATA_SHARE is used internally to say that
2815    *  the locking is just made to change the internal state of the share
2816    *  itself.
2817    */
2818   CURL_LOCK_DATA_SHARE,
2819   CURL_LOCK_DATA_COOKIE,
2820   CURL_LOCK_DATA_DNS,
2821   CURL_LOCK_DATA_SSL_SESSION,
2822   CURL_LOCK_DATA_CONNECT,
2823   CURL_LOCK_DATA_PSL,
2824   CURL_LOCK_DATA_LAST
2825 } curl_lock_data;
2826 
2827 /* Different lock access types */
2828 typedef enum {
2829   CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
2830   CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
2831   CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
2832   CURL_LOCK_ACCESS_LAST        /* never use */
2833 } curl_lock_access;
2834 
2835 typedef void (*curl_lock_function)(CURL *handle,
2836                                    curl_lock_data data,
2837                                    curl_lock_access locktype,
2838                                    void *userptr);
2839 typedef void (*curl_unlock_function)(CURL *handle,
2840                                      curl_lock_data data,
2841                                      void *userptr);
2842 
2843 
2844 typedef enum {
2845   CURLSHE_OK,  /* all is fine */
2846   CURLSHE_BAD_OPTION, /* 1 */
2847   CURLSHE_IN_USE,     /* 2 */
2848   CURLSHE_INVALID,    /* 3 */
2849   CURLSHE_NOMEM,      /* 4 out of memory */
2850   CURLSHE_NOT_BUILT_IN, /* 5 feature not present in lib */
2851   CURLSHE_LAST        /* never use */
2852 } CURLSHcode;
2853 
2854 typedef enum {
2855   CURLSHOPT_NONE,  /* don't use */
2856   CURLSHOPT_SHARE,   /* specify a data type to share */
2857   CURLSHOPT_UNSHARE, /* specify which data type to stop sharing */
2858   CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
2859   CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
2860   CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
2861                            callback functions */
2862   CURLSHOPT_LAST  /* never use */
2863 } CURLSHoption;
2864 
2865 CURL_EXTERN CURLSH *curl_share_init(void);
2866 CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);
2867 CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *);
2868 
2869 /****************************************************************************
2870  * Structures for querying information about the curl library at runtime.
2871  */
2872 
2873 typedef enum {
2874   CURLVERSION_FIRST,
2875   CURLVERSION_SECOND,
2876   CURLVERSION_THIRD,
2877   CURLVERSION_FOURTH,
2878   CURLVERSION_FIFTH,
2879   CURLVERSION_SIXTH,
2880   CURLVERSION_SEVENTH,
2881   CURLVERSION_EIGHTH,
2882   CURLVERSION_NINTH,
2883   CURLVERSION_TENTH,
2884   CURLVERSION_LAST /* never actually use this */
2885 } CURLversion;
2886 
2887 /* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
2888    basically all programs ever that want to get version information. It is
2889    meant to be a built-in version number for what kind of struct the caller
2890    expects. If the struct ever changes, we redefine the NOW to another enum
2891    from above. */
2892 #define CURLVERSION_NOW CURLVERSION_TENTH
2893 
2894 struct curl_version_info_data {
2895   CURLversion age;          /* age of the returned struct */
2896   const char *version;      /* LIBCURL_VERSION */
2897   unsigned int version_num; /* LIBCURL_VERSION_NUM */
2898   const char *host;         /* OS/host/cpu/machine when configured */
2899   int features;             /* bitmask, see defines below */
2900   const char *ssl_version;  /* human readable string */
2901   long ssl_version_num;     /* not used anymore, always 0 */
2902   const char *libz_version; /* human readable string */
2903   /* protocols is terminated by an entry with a NULL protoname */
2904   const char * const *protocols;
2905 
2906   /* The fields below this were added in CURLVERSION_SECOND */
2907   const char *ares;
2908   int ares_num;
2909 
2910   /* This field was added in CURLVERSION_THIRD */
2911   const char *libidn;
2912 
2913   /* These field were added in CURLVERSION_FOURTH */
2914 
2915   /* Same as '_libiconv_version' if built with HAVE_ICONV */
2916   int iconv_ver_num;
2917 
2918   const char *libssh_version; /* human readable string */
2919 
2920   /* These fields were added in CURLVERSION_FIFTH */
2921   unsigned int brotli_ver_num; /* Numeric Brotli version
2922                                   (MAJOR << 24) | (MINOR << 12) | PATCH */
2923   const char *brotli_version; /* human readable string. */
2924 
2925   /* These fields were added in CURLVERSION_SIXTH */
2926   unsigned int nghttp2_ver_num; /* Numeric nghttp2 version
2927                                    (MAJOR << 16) | (MINOR << 8) | PATCH */
2928   const char *nghttp2_version; /* human readable string. */
2929   const char *quic_version;    /* human readable quic (+ HTTP/3) library +
2930                                   version or NULL */
2931 
2932   /* These fields were added in CURLVERSION_SEVENTH */
2933   const char *cainfo;          /* the built-in default CURLOPT_CAINFO, might
2934                                   be NULL */
2935   const char *capath;          /* the built-in default CURLOPT_CAPATH, might
2936                                   be NULL */
2937 
2938   /* These fields were added in CURLVERSION_EIGHTH */
2939   unsigned int zstd_ver_num; /* Numeric Zstd version
2940                                   (MAJOR << 24) | (MINOR << 12) | PATCH */
2941   const char *zstd_version; /* human readable string. */
2942 
2943   /* These fields were added in CURLVERSION_NINTH */
2944   const char *hyper_version; /* human readable string. */
2945 
2946   /* These fields were added in CURLVERSION_TENTH */
2947   const char *gsasl_version; /* human readable string. */
2948 };
2949 typedef struct curl_version_info_data curl_version_info_data;
2950 
2951 #define CURL_VERSION_IPV6         (1<<0)  /* IPv6-enabled */
2952 #define CURL_VERSION_KERBEROS4    (1<<1)  /* Kerberos V4 auth is supported
2953                                              (deprecated) */
2954 #define CURL_VERSION_SSL          (1<<2)  /* SSL options are present */
2955 #define CURL_VERSION_LIBZ         (1<<3)  /* libz features are present */
2956 #define CURL_VERSION_NTLM         (1<<4)  /* NTLM auth is supported */
2957 #define CURL_VERSION_GSSNEGOTIATE (1<<5)  /* Negotiate auth is supported
2958                                              (deprecated) */
2959 #define CURL_VERSION_DEBUG        (1<<6)  /* Built with debug capabilities */
2960 #define CURL_VERSION_ASYNCHDNS    (1<<7)  /* Asynchronous DNS resolves */
2961 #define CURL_VERSION_SPNEGO       (1<<8)  /* SPNEGO auth is supported */
2962 #define CURL_VERSION_LARGEFILE    (1<<9)  /* Supports files larger than 2GB */
2963 #define CURL_VERSION_IDN          (1<<10) /* Internationized Domain Names are
2964                                              supported */
2965 #define CURL_VERSION_SSPI         (1<<11) /* Built against Windows SSPI */
2966 #define CURL_VERSION_CONV         (1<<12) /* Character conversions supported */
2967 #define CURL_VERSION_CURLDEBUG    (1<<13) /* Debug memory tracking supported */
2968 #define CURL_VERSION_TLSAUTH_SRP  (1<<14) /* TLS-SRP auth is supported */
2969 #define CURL_VERSION_NTLM_WB      (1<<15) /* NTLM delegation to winbind helper
2970                                              is supported */
2971 #define CURL_VERSION_HTTP2        (1<<16) /* HTTP2 support built-in */
2972 #define CURL_VERSION_GSSAPI       (1<<17) /* Built against a GSS-API library */
2973 #define CURL_VERSION_KERBEROS5    (1<<18) /* Kerberos V5 auth is supported */
2974 #define CURL_VERSION_UNIX_SOCKETS (1<<19) /* Unix domain sockets support */
2975 #define CURL_VERSION_PSL          (1<<20) /* Mozilla's Public Suffix List, used
2976                                              for cookie domain verification */
2977 #define CURL_VERSION_HTTPS_PROXY  (1<<21) /* HTTPS-proxy support built-in */
2978 #define CURL_VERSION_MULTI_SSL    (1<<22) /* Multiple SSL backends available */
2979 #define CURL_VERSION_BROTLI       (1<<23) /* Brotli features are present. */
2980 #define CURL_VERSION_ALTSVC       (1<<24) /* Alt-Svc handling built-in */
2981 #define CURL_VERSION_HTTP3        (1<<25) /* HTTP3 support built-in */
2982 #define CURL_VERSION_ZSTD         (1<<26) /* zstd features are present */
2983 #define CURL_VERSION_UNICODE      (1<<27) /* Unicode support on Windows */
2984 #define CURL_VERSION_HSTS         (1<<28) /* HSTS is supported */
2985 #define CURL_VERSION_GSASL        (1<<29) /* libgsasl is supported */
2986 
2987  /*
2988  * NAME curl_version_info()
2989  *
2990  * DESCRIPTION
2991  *
2992  * This function returns a pointer to a static copy of the version info
2993  * struct. See above.
2994  */
2995 CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);
2996 
2997 /*
2998  * NAME curl_easy_strerror()
2999  *
3000  * DESCRIPTION
3001  *
3002  * The curl_easy_strerror function may be used to turn a CURLcode value
3003  * into the equivalent human readable error string.  This is useful
3004  * for printing meaningful error messages.
3005  */
3006 CURL_EXTERN const char *curl_easy_strerror(CURLcode);
3007 
3008 /*
3009  * NAME curl_share_strerror()
3010  *
3011  * DESCRIPTION
3012  *
3013  * The curl_share_strerror function may be used to turn a CURLSHcode value
3014  * into the equivalent human readable error string.  This is useful
3015  * for printing meaningful error messages.
3016  */
3017 CURL_EXTERN const char *curl_share_strerror(CURLSHcode);
3018 
3019 /*
3020  * NAME curl_easy_pause()
3021  *
3022  * DESCRIPTION
3023  *
3024  * The curl_easy_pause function pauses or unpauses transfers. Select the new
3025  * state by setting the bitmask, use the convenience defines below.
3026  *
3027  */
3028 CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
3029 
3030 #define CURLPAUSE_RECV      (1<<0)
3031 #define CURLPAUSE_RECV_CONT (0)
3032 
3033 #define CURLPAUSE_SEND      (1<<2)
3034 #define CURLPAUSE_SEND_CONT (0)
3035 
3036 #define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
3037 #define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)
3038 
3039 #ifdef  __cplusplus
3040 }
3041 #endif
3042 
3043 /* unfortunately, the easy.h and multi.h include files need options and info
3044   stuff before they can be included! */
3045 #include "easy.h" /* nothing in curl is fun without the easy stuff */
3046 #include "multi.h"
3047 #include "urlapi.h"
3048 #include "options.h"
3049 
3050 /* the typechecker doesn't work in C++ (yet) */
3051 #if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
3052     ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
3053     !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
3054 #include "typecheck-gcc.h"
3055 #else
3056 #if defined(__STDC__) && (__STDC__ >= 1)
3057 /* This preprocessor magic that replaces a call with the exact same call is
3058    only done to make sure application authors pass exactly three arguments
3059    to these functions. */
3060 #define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
3061 #define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
3062 #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
3063 #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
3064 #endif /* __STDC__ >= 1 */
3065 #endif /* gcc >= 4.3 && !__cplusplus */
3066 
3067 #endif /* CURLINC_CURL_H */
3068