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1 #ifndef CURLINC_CURL_H
2 #define CURLINC_CURL_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 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  * SPDX-License-Identifier: curl
24  *
25  ***************************************************************************/
26 
27 /*
28  * If you have libcurl problems, all docs and details are found here:
29  *   https://curl.se/libcurl/
30  */
31 
32 #ifdef CURL_NO_OLDIES
33 #define CURL_STRICTER
34 #endif
35 
36 /* Compile-time deprecation macros. */
37 #if defined(__GNUC__) &&                                                \
38   ((__GNUC__ > 12) || ((__GNUC__ == 12) && (__GNUC_MINOR__ >= 1 ))) &&  \
39   !defined(__INTEL_COMPILER) &&                                         \
40   !defined(CURL_DISABLE_DEPRECATION) && !defined(BUILDING_LIBCURL)
41 #define CURL_DEPRECATED(version, message)                       \
42   __attribute__((deprecated("since " # version ". " message)))
43 #define CURL_IGNORE_DEPRECATION(statements) \
44       _Pragma("GCC diagnostic push") \
45       _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
46       statements \
47       _Pragma("GCC diagnostic pop")
48 #else
49 #define CURL_DEPRECATED(version, message)
50 #define CURL_IGNORE_DEPRECATION(statements)     statements
51 #endif
52 
53 #include "curlver.h"         /* libcurl version defines   */
54 #include "system.h"          /* determine things run-time */
55 
56 #include <stdio.h>
57 #include <limits.h>
58 
59 #if defined(__FreeBSD__) || defined(__MidnightBSD__)
60 /* Needed for __FreeBSD_version or __MidnightBSD_version symbol definition */
61 #include <sys/param.h>
62 #endif
63 
64 /* The include stuff here below is mainly for time_t! */
65 #include <sys/types.h>
66 #include <time.h>
67 
68 #if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
69 #if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
70       defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
71 /* The check above prevents the winsock2 inclusion if winsock.h already was
72    included, since they can't co-exist without problems */
73 #include <winsock2.h>
74 #include <ws2tcpip.h>
75 #endif
76 #endif
77 
78 /* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
79    libc5-based Linux systems. Only include it on systems that are known to
80    require it! */
81 #if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
82     defined(__minix) || defined(__INTEGRITY) || \
83     defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__) || \
84     defined(__CYGWIN__) || defined(AMIGA) || defined(__NuttX__) || \
85    (defined(__FreeBSD_version) && (__FreeBSD_version < 800000)) || \
86    (defined(__MidnightBSD_version) && (__MidnightBSD_version < 100000)) || \
87     defined(__sun__) || defined(__serenity__) || defined(__vxworks__)
88 #include <sys/select.h>
89 #endif
90 
91 #if !defined(_WIN32) && !defined(_WIN32_WCE)
92 #include <sys/socket.h>
93 #endif
94 
95 #if !defined(_WIN32)
96 #include <sys/time.h>
97 #endif
98 
99 /* Compatibility for non-Clang compilers */
100 #ifndef __has_declspec_attribute
101 #  define __has_declspec_attribute(x) 0
102 #endif
103 
104 #ifdef  __cplusplus
105 extern "C" {
106 #endif
107 
108 #if defined(BUILDING_LIBCURL) || defined(CURL_STRICTER)
109 typedef struct Curl_easy CURL;
110 typedef struct Curl_share CURLSH;
111 #else
112 typedef void CURL;
113 typedef void CURLSH;
114 #endif
115 
116 /*
117  * libcurl external API function linkage decorations.
118  */
119 
120 #ifdef CURL_STATICLIB
121 #  define CURL_EXTERN
122 #elif defined(_WIN32) || \
123      (__has_declspec_attribute(dllexport) && \
124       __has_declspec_attribute(dllimport))
125 #  if defined(BUILDING_LIBCURL)
126 #    define CURL_EXTERN  __declspec(dllexport)
127 #  else
128 #    define CURL_EXTERN  __declspec(dllimport)
129 #  endif
130 #elif defined(BUILDING_LIBCURL) && defined(CURL_HIDDEN_SYMBOLS)
131 #  define CURL_EXTERN CURL_EXTERN_SYMBOL
132 #else
133 #  define CURL_EXTERN
134 #endif
135 
136 #ifndef curl_socket_typedef
137 /* socket typedef */
138 #if defined(_WIN32) && !defined(__LWIP_OPT_H__) && !defined(LWIP_HDR_OPT_H)
139 typedef SOCKET curl_socket_t;
140 #define CURL_SOCKET_BAD INVALID_SOCKET
141 #else
142 typedef int curl_socket_t;
143 #define CURL_SOCKET_BAD -1
144 #endif
145 #define curl_socket_typedef
146 #endif /* curl_socket_typedef */
147 
148 /* enum for the different supported SSL backends */
149 typedef enum {
150   CURLSSLBACKEND_NONE = 0,
151   CURLSSLBACKEND_OPENSSL = 1,
152   CURLSSLBACKEND_GNUTLS = 2,
153   CURLSSLBACKEND_NSS                    CURL_DEPRECATED(8.3.0, "") = 3,
154   CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
155   CURLSSLBACKEND_GSKIT                  CURL_DEPRECATED(8.3.0, "") = 5,
156   CURLSSLBACKEND_POLARSSL               CURL_DEPRECATED(7.69.0, "") = 6,
157   CURLSSLBACKEND_WOLFSSL = 7,
158   CURLSSLBACKEND_SCHANNEL = 8,
159   CURLSSLBACKEND_SECURETRANSPORT = 9,
160   CURLSSLBACKEND_AXTLS                  CURL_DEPRECATED(7.61.0, "") = 10,
161   CURLSSLBACKEND_MBEDTLS = 11,
162   CURLSSLBACKEND_MESALINK               CURL_DEPRECATED(7.82.0, "") = 12,
163   CURLSSLBACKEND_BEARSSL = 13,
164   CURLSSLBACKEND_RUSTLS = 14
165 } curl_sslbackend;
166 
167 /* aliases for library clones and renames */
168 #define CURLSSLBACKEND_AWSLC CURLSSLBACKEND_OPENSSL
169 #define CURLSSLBACKEND_BORINGSSL CURLSSLBACKEND_OPENSSL
170 #define CURLSSLBACKEND_LIBRESSL CURLSSLBACKEND_OPENSSL
171 
172 /* deprecated names: */
173 #define CURLSSLBACKEND_CYASSL CURLSSLBACKEND_WOLFSSL
174 #define CURLSSLBACKEND_DARWINSSL CURLSSLBACKEND_SECURETRANSPORT
175 
176 struct curl_httppost {
177   struct curl_httppost *next;       /* next entry in the list */
178   char *name;                       /* pointer to allocated name */
179   long namelength;                  /* length of name length */
180   char *contents;                   /* pointer to allocated data contents */
181   long contentslength;              /* length of contents field, see also
182                                        CURL_HTTPPOST_LARGE */
183   char *buffer;                     /* pointer to allocated buffer contents */
184   long bufferlength;                /* length of buffer field */
185   char *contenttype;                /* Content-Type */
186   struct curl_slist *contentheader; /* list of extra headers for this form */
187   struct curl_httppost *more;       /* if one field name has more than one
188                                        file, this link should link to following
189                                        files */
190   long flags;                       /* as defined below */
191 
192 /* specified content is a file name */
193 #define CURL_HTTPPOST_FILENAME (1<<0)
194 /* specified content is a file name */
195 #define CURL_HTTPPOST_READFILE (1<<1)
196 /* name is only stored pointer do not free in formfree */
197 #define CURL_HTTPPOST_PTRNAME (1<<2)
198 /* contents is only stored pointer do not free in formfree */
199 #define CURL_HTTPPOST_PTRCONTENTS (1<<3)
200 /* upload file from buffer */
201 #define CURL_HTTPPOST_BUFFER (1<<4)
202 /* upload file from pointer contents */
203 #define CURL_HTTPPOST_PTRBUFFER (1<<5)
204 /* upload file contents by using the regular read callback to get the data and
205    pass the given pointer as custom pointer */
206 #define CURL_HTTPPOST_CALLBACK (1<<6)
207 /* use size in 'contentlen', added in 7.46.0 */
208 #define CURL_HTTPPOST_LARGE (1<<7)
209 
210   char *showfilename;               /* The file name to show. If not set, the
211                                        actual file name will be used (if this
212                                        is a file part) */
213   void *userp;                      /* custom pointer used for
214                                        HTTPPOST_CALLBACK posts */
215   curl_off_t contentlen;            /* alternative length of contents
216                                        field. Used if CURL_HTTPPOST_LARGE is
217                                        set. Added in 7.46.0 */
218 };
219 
220 
221 /* This is a return code for the progress callback that, when returned, will
222    signal libcurl to continue executing the default progress function */
223 #define CURL_PROGRESSFUNC_CONTINUE 0x10000001
224 
225 /* This is the CURLOPT_PROGRESSFUNCTION callback prototype. It is now
226    considered deprecated but was the only choice up until 7.31.0 */
227 typedef int (*curl_progress_callback)(void *clientp,
228                                       double dltotal,
229                                       double dlnow,
230                                       double ultotal,
231                                       double ulnow);
232 
233 /* This is the CURLOPT_XFERINFOFUNCTION callback prototype. It was introduced
234    in 7.32.0, avoids the use of floating point numbers and provides more
235    detailed information. */
236 typedef int (*curl_xferinfo_callback)(void *clientp,
237                                       curl_off_t dltotal,
238                                       curl_off_t dlnow,
239                                       curl_off_t ultotal,
240                                       curl_off_t ulnow);
241 
242 #ifndef CURL_MAX_READ_SIZE
243   /* The maximum receive buffer size configurable via CURLOPT_BUFFERSIZE. */
244 #define CURL_MAX_READ_SIZE (10*1024*1024)
245 #endif
246 
247 #ifndef CURL_MAX_WRITE_SIZE
248   /* Tests have proven that 20K is a very bad buffer size for uploads on
249      Windows, while 16K for some odd reason performed a lot better.
250      We do the ifndef check to allow this value to easier be changed at build
251      time for those who feel adventurous. The practical minimum is about
252      400 bytes since libcurl uses a buffer of this size as a scratch area
253      (unrelated to network send operations). */
254 #define CURL_MAX_WRITE_SIZE 16384
255 #endif
256 
257 #ifndef CURL_MAX_HTTP_HEADER
258 /* The only reason to have a max limit for this is to avoid the risk of a bad
259    server feeding libcurl with a never-ending header that will cause reallocs
260    infinitely */
261 #define CURL_MAX_HTTP_HEADER (100*1024)
262 #endif
263 
264 /* This is a magic return code for the write callback that, when returned,
265    will signal libcurl to pause receiving on the current transfer. */
266 #define CURL_WRITEFUNC_PAUSE 0x10000001
267 
268 /* This is a magic return code for the write callback that, when returned,
269    will signal an error from the callback. */
270 #define CURL_WRITEFUNC_ERROR 0xFFFFFFFF
271 
272 typedef size_t (*curl_write_callback)(char *buffer,
273                                       size_t size,
274                                       size_t nitems,
275                                       void *outstream);
276 
277 /* This callback will be called when a new resolver request is made */
278 typedef int (*curl_resolver_start_callback)(void *resolver_state,
279                                             void *reserved, void *userdata);
280 
281 /* enumeration of file types */
282 typedef enum {
283   CURLFILETYPE_FILE = 0,
284   CURLFILETYPE_DIRECTORY,
285   CURLFILETYPE_SYMLINK,
286   CURLFILETYPE_DEVICE_BLOCK,
287   CURLFILETYPE_DEVICE_CHAR,
288   CURLFILETYPE_NAMEDPIPE,
289   CURLFILETYPE_SOCKET,
290   CURLFILETYPE_DOOR, /* is possible only on Sun Solaris now */
291 
292   CURLFILETYPE_UNKNOWN /* should never occur */
293 } curlfiletype;
294 
295 #define CURLFINFOFLAG_KNOWN_FILENAME    (1<<0)
296 #define CURLFINFOFLAG_KNOWN_FILETYPE    (1<<1)
297 #define CURLFINFOFLAG_KNOWN_TIME        (1<<2)
298 #define CURLFINFOFLAG_KNOWN_PERM        (1<<3)
299 #define CURLFINFOFLAG_KNOWN_UID         (1<<4)
300 #define CURLFINFOFLAG_KNOWN_GID         (1<<5)
301 #define CURLFINFOFLAG_KNOWN_SIZE        (1<<6)
302 #define CURLFINFOFLAG_KNOWN_HLINKCOUNT  (1<<7)
303 
304 /* Information about a single file, used when doing FTP wildcard matching */
305 struct curl_fileinfo {
306   char *filename;
307   curlfiletype filetype;
308   time_t time; /* always zero! */
309   unsigned int perm;
310   int uid;
311   int gid;
312   curl_off_t size;
313   long int hardlinks;
314 
315   struct {
316     /* If some of these fields is not NULL, it is a pointer to b_data. */
317     char *time;
318     char *perm;
319     char *user;
320     char *group;
321     char *target; /* pointer to the target filename of a symlink */
322   } strings;
323 
324   unsigned int flags;
325 
326   /* These are libcurl private struct fields. Previously used by libcurl, so
327      they must never be interfered with. */
328   char *b_data;
329   size_t b_size;
330   size_t b_used;
331 };
332 
333 /* return codes for CURLOPT_CHUNK_BGN_FUNCTION */
334 #define CURL_CHUNK_BGN_FUNC_OK      0
335 #define CURL_CHUNK_BGN_FUNC_FAIL    1 /* tell the lib to end the task */
336 #define CURL_CHUNK_BGN_FUNC_SKIP    2 /* skip this chunk over */
337 
338 /* if splitting of data transfer is enabled, this callback is called before
339    download of an individual chunk started. Note that parameter "remains" works
340    only for FTP wildcard downloading (for now), otherwise is not used */
341 typedef long (*curl_chunk_bgn_callback)(const void *transfer_info,
342                                         void *ptr,
343                                         int remains);
344 
345 /* return codes for CURLOPT_CHUNK_END_FUNCTION */
346 #define CURL_CHUNK_END_FUNC_OK      0
347 #define CURL_CHUNK_END_FUNC_FAIL    1 /* tell the lib to end the task */
348 
349 /* If splitting of data transfer is enabled this callback is called after
350    download of an individual chunk finished.
351    Note! After this callback was set then it have to be called FOR ALL chunks.
352    Even if downloading of this chunk was skipped in CHUNK_BGN_FUNC.
353    This is the reason why we don't need "transfer_info" parameter in this
354    callback and we are not interested in "remains" parameter too. */
355 typedef long (*curl_chunk_end_callback)(void *ptr);
356 
357 /* return codes for FNMATCHFUNCTION */
358 #define CURL_FNMATCHFUNC_MATCH    0 /* string corresponds to the pattern */
359 #define CURL_FNMATCHFUNC_NOMATCH  1 /* pattern doesn't match the string */
360 #define CURL_FNMATCHFUNC_FAIL     2 /* an error occurred */
361 
362 /* callback type for wildcard downloading pattern matching. If the
363    string matches the pattern, return CURL_FNMATCHFUNC_MATCH value, etc. */
364 typedef int (*curl_fnmatch_callback)(void *ptr,
365                                      const char *pattern,
366                                      const char *string);
367 
368 /* These are the return codes for the seek callbacks */
369 #define CURL_SEEKFUNC_OK       0
370 #define CURL_SEEKFUNC_FAIL     1 /* fail the entire transfer */
371 #define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking can't be done, so
372                                     libcurl might try other means instead */
373 typedef int (*curl_seek_callback)(void *instream,
374                                   curl_off_t offset,
375                                   int origin); /* 'whence' */
376 
377 /* This is a return code for the read callback that, when returned, will
378    signal libcurl to immediately abort the current transfer. */
379 #define CURL_READFUNC_ABORT 0x10000000
380 /* This is a return code for the read callback that, when returned, will
381    signal libcurl to pause sending data on the current transfer. */
382 #define CURL_READFUNC_PAUSE 0x10000001
383 
384 /* Return code for when the trailing headers' callback has terminated
385    without any errors */
386 #define CURL_TRAILERFUNC_OK 0
387 /* Return code for when was an error in the trailing header's list and we
388   want to abort the request */
389 #define CURL_TRAILERFUNC_ABORT 1
390 
391 typedef size_t (*curl_read_callback)(char *buffer,
392                                       size_t size,
393                                       size_t nitems,
394                                       void *instream);
395 
396 typedef int (*curl_trailer_callback)(struct curl_slist **list,
397                                       void *userdata);
398 
399 typedef enum {
400   CURLSOCKTYPE_IPCXN,  /* socket created for a specific IP connection */
401   CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
402   CURLSOCKTYPE_LAST    /* never use */
403 } curlsocktype;
404 
405 /* The return code from the sockopt_callback can signal information back
406    to libcurl: */
407 #define CURL_SOCKOPT_OK 0
408 #define CURL_SOCKOPT_ERROR 1 /* causes libcurl to abort and return
409                                 CURLE_ABORTED_BY_CALLBACK */
410 #define CURL_SOCKOPT_ALREADY_CONNECTED 2
411 
412 typedef int (*curl_sockopt_callback)(void *clientp,
413                                      curl_socket_t curlfd,
414                                      curlsocktype purpose);
415 
416 struct curl_sockaddr {
417   int family;
418   int socktype;
419   int protocol;
420   unsigned int addrlen; /* addrlen was a socklen_t type before 7.18.0 but it
421                            turned really ugly and painful on the systems that
422                            lack this type */
423   struct sockaddr addr;
424 };
425 
426 typedef curl_socket_t
427 (*curl_opensocket_callback)(void *clientp,
428                             curlsocktype purpose,
429                             struct curl_sockaddr *address);
430 
431 typedef int
432 (*curl_closesocket_callback)(void *clientp, curl_socket_t item);
433 
434 typedef enum {
435   CURLIOE_OK,            /* I/O operation successful */
436   CURLIOE_UNKNOWNCMD,    /* command was unknown to callback */
437   CURLIOE_FAILRESTART,   /* failed to restart the read */
438   CURLIOE_LAST           /* never use */
439 } curlioerr;
440 
441 typedef enum {
442   CURLIOCMD_NOP,         /* no operation */
443   CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
444   CURLIOCMD_LAST         /* never use */
445 } curliocmd;
446 
447 typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
448                                          int cmd,
449                                          void *clientp);
450 
451 #ifndef CURL_DID_MEMORY_FUNC_TYPEDEFS
452 /*
453  * The following typedef's are signatures of malloc, free, realloc, strdup and
454  * calloc respectively.  Function pointers of these types can be passed to the
455  * curl_global_init_mem() function to set user defined memory management
456  * callback routines.
457  */
458 typedef void *(*curl_malloc_callback)(size_t size);
459 typedef void (*curl_free_callback)(void *ptr);
460 typedef void *(*curl_realloc_callback)(void *ptr, size_t size);
461 typedef char *(*curl_strdup_callback)(const char *str);
462 typedef void *(*curl_calloc_callback)(size_t nmemb, size_t size);
463 
464 #define CURL_DID_MEMORY_FUNC_TYPEDEFS
465 #endif
466 
467 /* the kind of data that is passed to information_callback */
468 typedef enum {
469   CURLINFO_TEXT = 0,
470   CURLINFO_HEADER_IN,    /* 1 */
471   CURLINFO_HEADER_OUT,   /* 2 */
472   CURLINFO_DATA_IN,      /* 3 */
473   CURLINFO_DATA_OUT,     /* 4 */
474   CURLINFO_SSL_DATA_IN,  /* 5 */
475   CURLINFO_SSL_DATA_OUT, /* 6 */
476   CURLINFO_END
477 } curl_infotype;
478 
479 typedef int (*curl_debug_callback)
480        (CURL *handle,      /* the handle/transfer this concerns */
481         curl_infotype type, /* what kind of data */
482         char *data,        /* points to the data */
483         size_t size,       /* size of the data pointed to */
484         void *userptr);    /* whatever the user please */
485 
486 /* This is the CURLOPT_PREREQFUNCTION callback prototype. */
487 typedef int (*curl_prereq_callback)(void *clientp,
488                                     char *conn_primary_ip,
489                                     char *conn_local_ip,
490                                     int conn_primary_port,
491                                     int conn_local_port);
492 
493 /* Return code for when the pre-request callback has terminated without
494    any errors */
495 #define CURL_PREREQFUNC_OK 0
496 /* Return code for when the pre-request callback wants to abort the
497    request */
498 #define CURL_PREREQFUNC_ABORT 1
499 
500 /* All possible error codes from all sorts of curl functions. Future versions
501    may return other values, stay prepared.
502 
503    Always add new return codes last. Never *EVER* remove any. The return
504    codes must remain the same!
505  */
506 
507 typedef enum {
508   CURLE_OK = 0,
509   CURLE_UNSUPPORTED_PROTOCOL,    /* 1 */
510   CURLE_FAILED_INIT,             /* 2 */
511   CURLE_URL_MALFORMAT,           /* 3 */
512   CURLE_NOT_BUILT_IN,            /* 4 - [was obsoleted in August 2007 for
513                                     7.17.0, reused in April 2011 for 7.21.5] */
514   CURLE_COULDNT_RESOLVE_PROXY,   /* 5 */
515   CURLE_COULDNT_RESOLVE_HOST,    /* 6 */
516   CURLE_COULDNT_CONNECT,         /* 7 */
517   CURLE_WEIRD_SERVER_REPLY,      /* 8 */
518   CURLE_REMOTE_ACCESS_DENIED,    /* 9 a service was denied by the server
519                                     due to lack of access - when login fails
520                                     this is not returned. */
521   CURLE_FTP_ACCEPT_FAILED,       /* 10 - [was obsoleted in April 2006 for
522                                     7.15.4, reused in Dec 2011 for 7.24.0]*/
523   CURLE_FTP_WEIRD_PASS_REPLY,    /* 11 */
524   CURLE_FTP_ACCEPT_TIMEOUT,      /* 12 - timeout occurred accepting server
525                                     [was obsoleted in August 2007 for 7.17.0,
526                                     reused in Dec 2011 for 7.24.0]*/
527   CURLE_FTP_WEIRD_PASV_REPLY,    /* 13 */
528   CURLE_FTP_WEIRD_227_FORMAT,    /* 14 */
529   CURLE_FTP_CANT_GET_HOST,       /* 15 */
530   CURLE_HTTP2,                   /* 16 - A problem in the http2 framing layer.
531                                     [was obsoleted in August 2007 for 7.17.0,
532                                     reused in July 2014 for 7.38.0] */
533   CURLE_FTP_COULDNT_SET_TYPE,    /* 17 */
534   CURLE_PARTIAL_FILE,            /* 18 */
535   CURLE_FTP_COULDNT_RETR_FILE,   /* 19 */
536   CURLE_OBSOLETE20,              /* 20 - NOT USED */
537   CURLE_QUOTE_ERROR,             /* 21 - quote command failure */
538   CURLE_HTTP_RETURNED_ERROR,     /* 22 */
539   CURLE_WRITE_ERROR,             /* 23 */
540   CURLE_OBSOLETE24,              /* 24 - NOT USED */
541   CURLE_UPLOAD_FAILED,           /* 25 - failed upload "command" */
542   CURLE_READ_ERROR,              /* 26 - couldn't open/read from file */
543   CURLE_OUT_OF_MEMORY,           /* 27 */
544   CURLE_OPERATION_TIMEDOUT,      /* 28 - the timeout time was reached */
545   CURLE_OBSOLETE29,              /* 29 - NOT USED */
546   CURLE_FTP_PORT_FAILED,         /* 30 - FTP PORT operation failed */
547   CURLE_FTP_COULDNT_USE_REST,    /* 31 - the REST command failed */
548   CURLE_OBSOLETE32,              /* 32 - NOT USED */
549   CURLE_RANGE_ERROR,             /* 33 - RANGE "command" didn't work */
550   CURLE_HTTP_POST_ERROR,         /* 34 */
551   CURLE_SSL_CONNECT_ERROR,       /* 35 - wrong when connecting with SSL */
552   CURLE_BAD_DOWNLOAD_RESUME,     /* 36 - couldn't resume download */
553   CURLE_FILE_COULDNT_READ_FILE,  /* 37 */
554   CURLE_LDAP_CANNOT_BIND,        /* 38 */
555   CURLE_LDAP_SEARCH_FAILED,      /* 39 */
556   CURLE_OBSOLETE40,              /* 40 - NOT USED */
557   CURLE_FUNCTION_NOT_FOUND,      /* 41 - NOT USED starting with 7.53.0 */
558   CURLE_ABORTED_BY_CALLBACK,     /* 42 */
559   CURLE_BAD_FUNCTION_ARGUMENT,   /* 43 */
560   CURLE_OBSOLETE44,              /* 44 - NOT USED */
561   CURLE_INTERFACE_FAILED,        /* 45 - CURLOPT_INTERFACE failed */
562   CURLE_OBSOLETE46,              /* 46 - NOT USED */
563   CURLE_TOO_MANY_REDIRECTS,      /* 47 - catch endless re-direct loops */
564   CURLE_UNKNOWN_OPTION,          /* 48 - User specified an unknown option */
565   CURLE_SETOPT_OPTION_SYNTAX,    /* 49 - Malformed setopt option */
566   CURLE_OBSOLETE50,              /* 50 - NOT USED */
567   CURLE_OBSOLETE51,              /* 51 - NOT USED */
568   CURLE_GOT_NOTHING,             /* 52 - when this is a specific error */
569   CURLE_SSL_ENGINE_NOTFOUND,     /* 53 - SSL crypto engine not found */
570   CURLE_SSL_ENGINE_SETFAILED,    /* 54 - can not set SSL crypto engine as
571                                     default */
572   CURLE_SEND_ERROR,              /* 55 - failed sending network data */
573   CURLE_RECV_ERROR,              /* 56 - failure in receiving network data */
574   CURLE_OBSOLETE57,              /* 57 - NOT IN USE */
575   CURLE_SSL_CERTPROBLEM,         /* 58 - problem with the local certificate */
576   CURLE_SSL_CIPHER,              /* 59 - couldn't use specified cipher */
577   CURLE_PEER_FAILED_VERIFICATION, /* 60 - peer's certificate or fingerprint
578                                      wasn't verified fine */
579   CURLE_BAD_CONTENT_ENCODING,    /* 61 - Unrecognized/bad encoding */
580   CURLE_OBSOLETE62,              /* 62 - NOT IN USE since 7.82.0 */
581   CURLE_FILESIZE_EXCEEDED,       /* 63 - Maximum file size exceeded */
582   CURLE_USE_SSL_FAILED,          /* 64 - Requested FTP SSL level failed */
583   CURLE_SEND_FAIL_REWIND,        /* 65 - Sending the data requires a rewind
584                                     that failed */
585   CURLE_SSL_ENGINE_INITFAILED,   /* 66 - failed to initialise ENGINE */
586   CURLE_LOGIN_DENIED,            /* 67 - user, password or similar was not
587                                     accepted and we failed to login */
588   CURLE_TFTP_NOTFOUND,           /* 68 - file not found on server */
589   CURLE_TFTP_PERM,               /* 69 - permission problem on server */
590   CURLE_REMOTE_DISK_FULL,        /* 70 - out of disk space on server */
591   CURLE_TFTP_ILLEGAL,            /* 71 - Illegal TFTP operation */
592   CURLE_TFTP_UNKNOWNID,          /* 72 - Unknown transfer ID */
593   CURLE_REMOTE_FILE_EXISTS,      /* 73 - File already exists */
594   CURLE_TFTP_NOSUCHUSER,         /* 74 - No such user */
595   CURLE_OBSOLETE75,              /* 75 - NOT IN USE since 7.82.0 */
596   CURLE_OBSOLETE76,              /* 76 - NOT IN USE since 7.82.0 */
597   CURLE_SSL_CACERT_BADFILE,      /* 77 - could not load CACERT file, missing
598                                     or wrong format */
599   CURLE_REMOTE_FILE_NOT_FOUND,   /* 78 - remote file not found */
600   CURLE_SSH,                     /* 79 - error from the SSH layer, somewhat
601                                     generic so the error message will be of
602                                     interest when this has happened */
603 
604   CURLE_SSL_SHUTDOWN_FAILED,     /* 80 - Failed to shut down the SSL
605                                     connection */
606   CURLE_AGAIN,                   /* 81 - socket is not ready for send/recv,
607                                     wait till it's ready and try again (Added
608                                     in 7.18.2) */
609   CURLE_SSL_CRL_BADFILE,         /* 82 - could not load CRL file, missing or
610                                     wrong format (Added in 7.19.0) */
611   CURLE_SSL_ISSUER_ERROR,        /* 83 - Issuer check failed.  (Added in
612                                     7.19.0) */
613   CURLE_FTP_PRET_FAILED,         /* 84 - a PRET command failed */
614   CURLE_RTSP_CSEQ_ERROR,         /* 85 - mismatch of RTSP CSeq numbers */
615   CURLE_RTSP_SESSION_ERROR,      /* 86 - mismatch of RTSP Session Ids */
616   CURLE_FTP_BAD_FILE_LIST,       /* 87 - unable to parse FTP file list */
617   CURLE_CHUNK_FAILED,            /* 88 - chunk callback reported error */
618   CURLE_NO_CONNECTION_AVAILABLE, /* 89 - No connection available, the
619                                     session will be queued */
620   CURLE_SSL_PINNEDPUBKEYNOTMATCH, /* 90 - specified pinned public key did not
621                                      match */
622   CURLE_SSL_INVALIDCERTSTATUS,   /* 91 - invalid certificate status */
623   CURLE_HTTP2_STREAM,            /* 92 - stream error in HTTP/2 framing layer
624                                     */
625   CURLE_RECURSIVE_API_CALL,      /* 93 - an api function was called from
626                                     inside a callback */
627   CURLE_AUTH_ERROR,              /* 94 - an authentication function returned an
628                                     error */
629   CURLE_HTTP3,                   /* 95 - An HTTP/3 layer problem */
630   CURLE_QUIC_CONNECT_ERROR,      /* 96 - QUIC connection error */
631   CURLE_PROXY,                   /* 97 - proxy handshake error */
632   CURLE_SSL_CLIENTCERT,          /* 98 - client-side certificate required */
633   CURLE_UNRECOVERABLE_POLL,      /* 99 - poll/select returned fatal error */
634   CURLE_TOO_LARGE,               /* 100 - a value/data met its maximum */
635   CURL_LAST /* never use! */
636 } CURLcode;
637 
638 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
639                           the obsolete stuff removed! */
640 
641 /* Previously obsolete error code reused in 7.38.0 */
642 #define CURLE_OBSOLETE16 CURLE_HTTP2
643 
644 /* Previously obsolete error codes reused in 7.24.0 */
645 #define CURLE_OBSOLETE10 CURLE_FTP_ACCEPT_FAILED
646 #define CURLE_OBSOLETE12 CURLE_FTP_ACCEPT_TIMEOUT
647 
648 /*  compatibility with older names */
649 #define CURLOPT_ENCODING CURLOPT_ACCEPT_ENCODING
650 #define CURLE_FTP_WEIRD_SERVER_REPLY CURLE_WEIRD_SERVER_REPLY
651 
652 /* The following were added in 7.62.0 */
653 #define CURLE_SSL_CACERT CURLE_PEER_FAILED_VERIFICATION
654 
655 /* The following were added in 7.21.5, April 2011 */
656 #define CURLE_UNKNOWN_TELNET_OPTION CURLE_UNKNOWN_OPTION
657 
658 /* Added for 7.78.0 */
659 #define CURLE_TELNET_OPTION_SYNTAX CURLE_SETOPT_OPTION_SYNTAX
660 
661 /* The following were added in 7.17.1 */
662 /* These are scheduled to disappear by 2009 */
663 #define CURLE_SSL_PEER_CERTIFICATE CURLE_PEER_FAILED_VERIFICATION
664 
665 /* The following were added in 7.17.0 */
666 /* These are scheduled to disappear by 2009 */
667 #define CURLE_OBSOLETE CURLE_OBSOLETE50 /* no one should be using this! */
668 #define CURLE_BAD_PASSWORD_ENTERED CURLE_OBSOLETE46
669 #define CURLE_BAD_CALLING_ORDER CURLE_OBSOLETE44
670 #define CURLE_FTP_USER_PASSWORD_INCORRECT CURLE_OBSOLETE10
671 #define CURLE_FTP_CANT_RECONNECT CURLE_OBSOLETE16
672 #define CURLE_FTP_COULDNT_GET_SIZE CURLE_OBSOLETE32
673 #define CURLE_FTP_COULDNT_SET_ASCII CURLE_OBSOLETE29
674 #define CURLE_FTP_WEIRD_USER_REPLY CURLE_OBSOLETE12
675 #define CURLE_FTP_WRITE_ERROR CURLE_OBSOLETE20
676 #define CURLE_LIBRARY_NOT_FOUND CURLE_OBSOLETE40
677 #define CURLE_MALFORMAT_USER CURLE_OBSOLETE24
678 #define CURLE_SHARE_IN_USE CURLE_OBSOLETE57
679 #define CURLE_URL_MALFORMAT_USER CURLE_NOT_BUILT_IN
680 
681 #define CURLE_FTP_ACCESS_DENIED CURLE_REMOTE_ACCESS_DENIED
682 #define CURLE_FTP_COULDNT_SET_BINARY CURLE_FTP_COULDNT_SET_TYPE
683 #define CURLE_FTP_QUOTE_ERROR CURLE_QUOTE_ERROR
684 #define CURLE_TFTP_DISKFULL CURLE_REMOTE_DISK_FULL
685 #define CURLE_TFTP_EXISTS CURLE_REMOTE_FILE_EXISTS
686 #define CURLE_HTTP_RANGE_ERROR CURLE_RANGE_ERROR
687 #define CURLE_FTP_SSL_FAILED CURLE_USE_SSL_FAILED
688 
689 /* The following were added earlier */
690 
691 #define CURLE_OPERATION_TIMEOUTED CURLE_OPERATION_TIMEDOUT
692 #define CURLE_HTTP_NOT_FOUND CURLE_HTTP_RETURNED_ERROR
693 #define CURLE_HTTP_PORT_FAILED CURLE_INTERFACE_FAILED
694 #define CURLE_FTP_COULDNT_STOR_FILE CURLE_UPLOAD_FAILED
695 #define CURLE_FTP_PARTIAL_FILE CURLE_PARTIAL_FILE
696 #define CURLE_FTP_BAD_DOWNLOAD_RESUME CURLE_BAD_DOWNLOAD_RESUME
697 #define CURLE_LDAP_INVALID_URL CURLE_OBSOLETE62
698 #define CURLE_CONV_REQD CURLE_OBSOLETE76
699 #define CURLE_CONV_FAILED CURLE_OBSOLETE75
700 
701 /* This was the error code 50 in 7.7.3 and a few earlier versions, this
702    is no longer used by libcurl but is instead #defined here only to not
703    make programs break */
704 #define CURLE_ALREADY_COMPLETE 99999
705 
706 /* Provide defines for really old option names */
707 #define CURLOPT_FILE CURLOPT_WRITEDATA /* name changed in 7.9.7 */
708 #define CURLOPT_INFILE CURLOPT_READDATA /* name changed in 7.9.7 */
709 #define CURLOPT_WRITEHEADER CURLOPT_HEADERDATA
710 
711 /* Since long deprecated options with no code in the lib that does anything
712    with them. */
713 #define CURLOPT_WRITEINFO CURLOPT_OBSOLETE40
714 #define CURLOPT_CLOSEPOLICY CURLOPT_OBSOLETE72
715 
716 #endif /* !CURL_NO_OLDIES */
717 
718 /*
719  * Proxy error codes. Returned in CURLINFO_PROXY_ERROR if CURLE_PROXY was
720  * return for the transfers.
721  */
722 typedef enum {
723   CURLPX_OK,
724   CURLPX_BAD_ADDRESS_TYPE,
725   CURLPX_BAD_VERSION,
726   CURLPX_CLOSED,
727   CURLPX_GSSAPI,
728   CURLPX_GSSAPI_PERMSG,
729   CURLPX_GSSAPI_PROTECTION,
730   CURLPX_IDENTD,
731   CURLPX_IDENTD_DIFFER,
732   CURLPX_LONG_HOSTNAME,
733   CURLPX_LONG_PASSWD,
734   CURLPX_LONG_USER,
735   CURLPX_NO_AUTH,
736   CURLPX_RECV_ADDRESS,
737   CURLPX_RECV_AUTH,
738   CURLPX_RECV_CONNECT,
739   CURLPX_RECV_REQACK,
740   CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
741   CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
742   CURLPX_REPLY_CONNECTION_REFUSED,
743   CURLPX_REPLY_GENERAL_SERVER_FAILURE,
744   CURLPX_REPLY_HOST_UNREACHABLE,
745   CURLPX_REPLY_NETWORK_UNREACHABLE,
746   CURLPX_REPLY_NOT_ALLOWED,
747   CURLPX_REPLY_TTL_EXPIRED,
748   CURLPX_REPLY_UNASSIGNED,
749   CURLPX_REQUEST_FAILED,
750   CURLPX_RESOLVE_HOST,
751   CURLPX_SEND_AUTH,
752   CURLPX_SEND_CONNECT,
753   CURLPX_SEND_REQUEST,
754   CURLPX_UNKNOWN_FAIL,
755   CURLPX_UNKNOWN_MODE,
756   CURLPX_USER_REJECTED,
757   CURLPX_LAST /* never use */
758 } CURLproxycode;
759 
760 /* This prototype applies to all conversion callbacks */
761 typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
762 
763 typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl,    /* easy handle */
764                                           void *ssl_ctx, /* actually an OpenSSL
765                                                             or WolfSSL SSL_CTX,
766                                                             or an mbedTLS
767                                                           mbedtls_ssl_config */
768                                           void *userptr);
769 
770 typedef enum {
771   CURLPROXY_HTTP = 0,   /* added in 7.10, new in 7.19.4 default is to use
772                            CONNECT HTTP/1.1 */
773   CURLPROXY_HTTP_1_0 = 1,   /* added in 7.19.4, force to use CONNECT
774                                HTTP/1.0  */
775   CURLPROXY_HTTPS = 2,  /* HTTPS but stick to HTTP/1 added in 7.52.0 */
776   CURLPROXY_HTTPS2 = 3, /* HTTPS and attempt HTTP/2 added in 8.2.0 */
777   CURLPROXY_SOCKS4 = 4, /* support added in 7.15.2, enum existed already
778                            in 7.10 */
779   CURLPROXY_SOCKS5 = 5, /* added in 7.10 */
780   CURLPROXY_SOCKS4A = 6, /* added in 7.18.0 */
781   CURLPROXY_SOCKS5_HOSTNAME = 7 /* Use the SOCKS5 protocol but pass along the
782                                    host name rather than the IP address. added
783                                    in 7.18.0 */
784 } curl_proxytype;  /* this enum was added in 7.10 */
785 
786 /*
787  * Bitmasks for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH options:
788  *
789  * CURLAUTH_NONE         - No HTTP authentication
790  * CURLAUTH_BASIC        - HTTP Basic authentication (default)
791  * CURLAUTH_DIGEST       - HTTP Digest authentication
792  * CURLAUTH_NEGOTIATE    - HTTP Negotiate (SPNEGO) authentication
793  * CURLAUTH_GSSNEGOTIATE - Alias for CURLAUTH_NEGOTIATE (deprecated)
794  * CURLAUTH_NTLM         - HTTP NTLM authentication
795  * CURLAUTH_DIGEST_IE    - HTTP Digest authentication with IE flavour
796  * CURLAUTH_NTLM_WB      - HTTP NTLM authentication delegated to winbind helper
797  * CURLAUTH_BEARER       - HTTP Bearer token authentication
798  * CURLAUTH_ONLY         - Use together with a single other type to force no
799  *                         authentication or just that single type
800  * CURLAUTH_ANY          - All fine types set
801  * CURLAUTH_ANYSAFE      - All fine types except Basic
802  */
803 
804 #define CURLAUTH_NONE         ((unsigned long)0)
805 #define CURLAUTH_BASIC        (((unsigned long)1)<<0)
806 #define CURLAUTH_DIGEST       (((unsigned long)1)<<1)
807 #define CURLAUTH_NEGOTIATE    (((unsigned long)1)<<2)
808 /* Deprecated since the advent of CURLAUTH_NEGOTIATE */
809 #define CURLAUTH_GSSNEGOTIATE CURLAUTH_NEGOTIATE
810 /* Used for CURLOPT_SOCKS5_AUTH to stay terminologically correct */
811 #define CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE
812 #define CURLAUTH_NTLM         (((unsigned long)1)<<3)
813 #define CURLAUTH_DIGEST_IE    (((unsigned long)1)<<4)
814 #define CURLAUTH_NTLM_WB      (((unsigned long)1)<<5)
815 #define CURLAUTH_BEARER       (((unsigned long)1)<<6)
816 #define CURLAUTH_AWS_SIGV4    (((unsigned long)1)<<7)
817 #define CURLAUTH_ONLY         (((unsigned long)1)<<31)
818 #define CURLAUTH_ANY          (~CURLAUTH_DIGEST_IE)
819 #define CURLAUTH_ANYSAFE      (~(CURLAUTH_BASIC|CURLAUTH_DIGEST_IE))
820 
821 #define CURLSSH_AUTH_ANY       ~0     /* all types supported by the server */
822 #define CURLSSH_AUTH_NONE      0      /* none allowed, silly but complete */
823 #define CURLSSH_AUTH_PUBLICKEY (1<<0) /* public/private key files */
824 #define CURLSSH_AUTH_PASSWORD  (1<<1) /* password */
825 #define CURLSSH_AUTH_HOST      (1<<2) /* host key files */
826 #define CURLSSH_AUTH_KEYBOARD  (1<<3) /* keyboard interactive */
827 #define CURLSSH_AUTH_AGENT     (1<<4) /* agent (ssh-agent, pageant...) */
828 #define CURLSSH_AUTH_GSSAPI    (1<<5) /* gssapi (kerberos, ...) */
829 #define CURLSSH_AUTH_DEFAULT CURLSSH_AUTH_ANY
830 
831 #define CURLGSSAPI_DELEGATION_NONE        0      /* no delegation (default) */
832 #define CURLGSSAPI_DELEGATION_POLICY_FLAG (1<<0) /* if permitted by policy */
833 #define CURLGSSAPI_DELEGATION_FLAG        (1<<1) /* delegate always */
834 
835 #define CURL_ERROR_SIZE 256
836 
837 enum curl_khtype {
838   CURLKHTYPE_UNKNOWN,
839   CURLKHTYPE_RSA1,
840   CURLKHTYPE_RSA,
841   CURLKHTYPE_DSS,
842   CURLKHTYPE_ECDSA,
843   CURLKHTYPE_ED25519
844 };
845 
846 struct curl_khkey {
847   const char *key; /* points to a null-terminated string encoded with base64
848                       if len is zero, otherwise to the "raw" data */
849   size_t len;
850   enum curl_khtype keytype;
851 };
852 
853 /* this is the set of return values expected from the curl_sshkeycallback
854    callback */
855 enum curl_khstat {
856   CURLKHSTAT_FINE_ADD_TO_FILE,
857   CURLKHSTAT_FINE,
858   CURLKHSTAT_REJECT, /* reject the connection, return an error */
859   CURLKHSTAT_DEFER,  /* do not accept it, but we can't answer right now.
860                         Causes a CURLE_PEER_FAILED_VERIFICATION error but the
861                         connection will be left intact etc */
862   CURLKHSTAT_FINE_REPLACE, /* accept and replace the wrong key */
863   CURLKHSTAT_LAST    /* not for use, only a marker for last-in-list */
864 };
865 
866 /* this is the set of status codes pass in to the callback */
867 enum curl_khmatch {
868   CURLKHMATCH_OK,       /* match */
869   CURLKHMATCH_MISMATCH, /* host found, key mismatch! */
870   CURLKHMATCH_MISSING,  /* no matching host/key found */
871   CURLKHMATCH_LAST      /* not for use, only a marker for last-in-list */
872 };
873 
874 typedef int
875   (*curl_sshkeycallback) (CURL *easy,     /* easy handle */
876                           const struct curl_khkey *knownkey, /* known */
877                           const struct curl_khkey *foundkey, /* found */
878                           enum curl_khmatch, /* libcurl's view on the keys */
879                           void *clientp); /* custom pointer passed with */
880                                           /* CURLOPT_SSH_KEYDATA */
881 
882 typedef int
883   (*curl_sshhostkeycallback) (void *clientp,/* custom pointer passed */
884                                             /* with CURLOPT_SSH_HOSTKEYDATA */
885                           int keytype, /* CURLKHTYPE */
886                           const char *key, /* hostkey to check */
887                           size_t keylen); /* length of the key */
888                           /* return CURLE_OK to accept */
889                           /* or something else to refuse */
890 
891 
892 /* parameter for the CURLOPT_USE_SSL option */
893 typedef enum {
894   CURLUSESSL_NONE,    /* do not attempt to use SSL */
895   CURLUSESSL_TRY,     /* try using SSL, proceed anyway otherwise */
896   CURLUSESSL_CONTROL, /* SSL for the control connection or fail */
897   CURLUSESSL_ALL,     /* SSL for all communication or fail */
898   CURLUSESSL_LAST     /* not an option, never use */
899 } curl_usessl;
900 
901 /* Definition of bits for the CURLOPT_SSL_OPTIONS argument: */
902 
903 /* - ALLOW_BEAST tells libcurl to allow the BEAST SSL vulnerability in the
904    name of improving interoperability with older servers. Some SSL libraries
905    have introduced work-arounds for this flaw but those work-arounds sometimes
906    make the SSL communication fail. To regain functionality with those broken
907    servers, a user can this way allow the vulnerability back. */
908 #define CURLSSLOPT_ALLOW_BEAST (1<<0)
909 
910 /* - NO_REVOKE tells libcurl to disable certificate revocation checks for those
911    SSL backends where such behavior is present. */
912 #define CURLSSLOPT_NO_REVOKE (1<<1)
913 
914 /* - NO_PARTIALCHAIN tells libcurl to *NOT* accept a partial certificate chain
915    if possible. The OpenSSL backend has this ability. */
916 #define CURLSSLOPT_NO_PARTIALCHAIN (1<<2)
917 
918 /* - REVOKE_BEST_EFFORT tells libcurl to ignore certificate revocation offline
919    checks and ignore missing revocation list for those SSL backends where such
920    behavior is present. */
921 #define CURLSSLOPT_REVOKE_BEST_EFFORT (1<<3)
922 
923 /* - CURLSSLOPT_NATIVE_CA tells libcurl to use standard certificate store of
924    operating system. Currently implemented under MS-Windows. */
925 #define CURLSSLOPT_NATIVE_CA (1<<4)
926 
927 /* - CURLSSLOPT_AUTO_CLIENT_CERT tells libcurl to automatically locate and use
928    a client certificate for authentication. (Schannel) */
929 #define CURLSSLOPT_AUTO_CLIENT_CERT (1<<5)
930 
931 /* The default connection attempt delay in milliseconds for happy eyeballs.
932    CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS.3 and happy-eyeballs-timeout-ms.d document
933    this value, keep them in sync. */
934 #define CURL_HET_DEFAULT 200L
935 
936 /* The default connection upkeep interval in milliseconds. */
937 #define CURL_UPKEEP_INTERVAL_DEFAULT 60000L
938 
939 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
940                           the obsolete stuff removed! */
941 
942 /* Backwards compatibility with older names */
943 /* These are scheduled to disappear by 2009 */
944 
945 #define CURLFTPSSL_NONE CURLUSESSL_NONE
946 #define CURLFTPSSL_TRY CURLUSESSL_TRY
947 #define CURLFTPSSL_CONTROL CURLUSESSL_CONTROL
948 #define CURLFTPSSL_ALL CURLUSESSL_ALL
949 #define CURLFTPSSL_LAST CURLUSESSL_LAST
950 #define curl_ftpssl curl_usessl
951 #endif /* !CURL_NO_OLDIES */
952 
953 /* parameter for the CURLOPT_FTP_SSL_CCC option */
954 typedef enum {
955   CURLFTPSSL_CCC_NONE,    /* do not send CCC */
956   CURLFTPSSL_CCC_PASSIVE, /* Let the server initiate the shutdown */
957   CURLFTPSSL_CCC_ACTIVE,  /* Initiate the shutdown */
958   CURLFTPSSL_CCC_LAST     /* not an option, never use */
959 } curl_ftpccc;
960 
961 /* parameter for the CURLOPT_FTPSSLAUTH option */
962 typedef enum {
963   CURLFTPAUTH_DEFAULT, /* let libcurl decide */
964   CURLFTPAUTH_SSL,     /* use "AUTH SSL" */
965   CURLFTPAUTH_TLS,     /* use "AUTH TLS" */
966   CURLFTPAUTH_LAST /* not an option, never use */
967 } curl_ftpauth;
968 
969 /* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
970 typedef enum {
971   CURLFTP_CREATE_DIR_NONE,  /* do NOT create missing dirs! */
972   CURLFTP_CREATE_DIR,       /* (FTP/SFTP) if CWD fails, try MKD and then CWD
973                                again if MKD succeeded, for SFTP this does
974                                similar magic */
975   CURLFTP_CREATE_DIR_RETRY, /* (FTP only) if CWD fails, try MKD and then CWD
976                                again even if MKD failed! */
977   CURLFTP_CREATE_DIR_LAST   /* not an option, never use */
978 } curl_ftpcreatedir;
979 
980 /* parameter for the CURLOPT_FTP_FILEMETHOD option */
981 typedef enum {
982   CURLFTPMETHOD_DEFAULT,   /* let libcurl pick */
983   CURLFTPMETHOD_MULTICWD,  /* single CWD operation for each path part */
984   CURLFTPMETHOD_NOCWD,     /* no CWD at all */
985   CURLFTPMETHOD_SINGLECWD, /* one CWD to full dir, then work on file */
986   CURLFTPMETHOD_LAST       /* not an option, never use */
987 } curl_ftpmethod;
988 
989 /* bitmask defines for CURLOPT_HEADEROPT */
990 #define CURLHEADER_UNIFIED  0
991 #define CURLHEADER_SEPARATE (1<<0)
992 
993 /* CURLALTSVC_* are bits for the CURLOPT_ALTSVC_CTRL option */
994 #define CURLALTSVC_READONLYFILE (1<<2)
995 #define CURLALTSVC_H1           (1<<3)
996 #define CURLALTSVC_H2           (1<<4)
997 #define CURLALTSVC_H3           (1<<5)
998 
999 
1000 struct curl_hstsentry {
1001   char *name;
1002   size_t namelen;
1003   unsigned int includeSubDomains:1;
1004   char expire[18]; /* YYYYMMDD HH:MM:SS [null-terminated] */
1005 };
1006 
1007 struct curl_index {
1008   size_t index; /* the provided entry's "index" or count */
1009   size_t total; /* total number of entries to save */
1010 };
1011 
1012 typedef enum {
1013   CURLSTS_OK,
1014   CURLSTS_DONE,
1015   CURLSTS_FAIL
1016 } CURLSTScode;
1017 
1018 typedef CURLSTScode (*curl_hstsread_callback)(CURL *easy,
1019                                               struct curl_hstsentry *e,
1020                                               void *userp);
1021 typedef CURLSTScode (*curl_hstswrite_callback)(CURL *easy,
1022                                                struct curl_hstsentry *e,
1023                                                struct curl_index *i,
1024                                                void *userp);
1025 
1026 /* CURLHSTS_* are bits for the CURLOPT_HSTS option */
1027 #define CURLHSTS_ENABLE       (long)(1<<0)
1028 #define CURLHSTS_READONLYFILE (long)(1<<1)
1029 
1030 /* The CURLPROTO_ defines below are for the **deprecated** CURLOPT_*PROTOCOLS
1031    options. Do not use. */
1032 #define CURLPROTO_HTTP   (1<<0)
1033 #define CURLPROTO_HTTPS  (1<<1)
1034 #define CURLPROTO_FTP    (1<<2)
1035 #define CURLPROTO_FTPS   (1<<3)
1036 #define CURLPROTO_SCP    (1<<4)
1037 #define CURLPROTO_SFTP   (1<<5)
1038 #define CURLPROTO_TELNET (1<<6)
1039 #define CURLPROTO_LDAP   (1<<7)
1040 #define CURLPROTO_LDAPS  (1<<8)
1041 #define CURLPROTO_DICT   (1<<9)
1042 #define CURLPROTO_FILE   (1<<10)
1043 #define CURLPROTO_TFTP   (1<<11)
1044 #define CURLPROTO_IMAP   (1<<12)
1045 #define CURLPROTO_IMAPS  (1<<13)
1046 #define CURLPROTO_POP3   (1<<14)
1047 #define CURLPROTO_POP3S  (1<<15)
1048 #define CURLPROTO_SMTP   (1<<16)
1049 #define CURLPROTO_SMTPS  (1<<17)
1050 #define CURLPROTO_RTSP   (1<<18)
1051 #define CURLPROTO_RTMP   (1<<19)
1052 #define CURLPROTO_RTMPT  (1<<20)
1053 #define CURLPROTO_RTMPE  (1<<21)
1054 #define CURLPROTO_RTMPTE (1<<22)
1055 #define CURLPROTO_RTMPS  (1<<23)
1056 #define CURLPROTO_RTMPTS (1<<24)
1057 #define CURLPROTO_GOPHER (1<<25)
1058 #define CURLPROTO_SMB    (1<<26)
1059 #define CURLPROTO_SMBS   (1<<27)
1060 #define CURLPROTO_MQTT   (1<<28)
1061 #define CURLPROTO_GOPHERS (1<<29)
1062 #define CURLPROTO_ALL    (~0) /* enable everything */
1063 
1064 /* long may be 32 or 64 bits, but we should never depend on anything else
1065    but 32 */
1066 #define CURLOPTTYPE_LONG          0
1067 #define CURLOPTTYPE_OBJECTPOINT   10000
1068 #define CURLOPTTYPE_FUNCTIONPOINT 20000
1069 #define CURLOPTTYPE_OFF_T         30000
1070 #define CURLOPTTYPE_BLOB          40000
1071 
1072 /* *STRINGPOINT is an alias for OBJECTPOINT to allow tools to extract the
1073    string options from the header file */
1074 
1075 
1076 #define CURLOPT(na,t,nu) na = t + nu
1077 #define CURLOPTDEPRECATED(na,t,nu,v,m) na CURL_DEPRECATED(v,m) = t + nu
1078 
1079 /* CURLOPT aliases that make no run-time difference */
1080 
1081 /* 'char *' argument to a string with a trailing zero */
1082 #define CURLOPTTYPE_STRINGPOINT CURLOPTTYPE_OBJECTPOINT
1083 
1084 /* 'struct curl_slist *' argument */
1085 #define CURLOPTTYPE_SLISTPOINT  CURLOPTTYPE_OBJECTPOINT
1086 
1087 /* 'void *' argument passed untouched to callback */
1088 #define CURLOPTTYPE_CBPOINT     CURLOPTTYPE_OBJECTPOINT
1089 
1090 /* 'long' argument with a set of values/bitmask */
1091 #define CURLOPTTYPE_VALUES      CURLOPTTYPE_LONG
1092 
1093 /*
1094  * All CURLOPT_* values.
1095  */
1096 
1097 typedef enum {
1098   /* This is the FILE * or void * the regular output should be written to. */
1099   CURLOPT(CURLOPT_WRITEDATA, CURLOPTTYPE_CBPOINT, 1),
1100 
1101   /* The full URL to get/put */
1102   CURLOPT(CURLOPT_URL, CURLOPTTYPE_STRINGPOINT, 2),
1103 
1104   /* Port number to connect to, if other than default. */
1105   CURLOPT(CURLOPT_PORT, CURLOPTTYPE_LONG, 3),
1106 
1107   /* Name of proxy to use. */
1108   CURLOPT(CURLOPT_PROXY, CURLOPTTYPE_STRINGPOINT, 4),
1109 
1110   /* "user:password;options" to use when fetching. */
1111   CURLOPT(CURLOPT_USERPWD, CURLOPTTYPE_STRINGPOINT, 5),
1112 
1113   /* "user:password" to use with proxy. */
1114   CURLOPT(CURLOPT_PROXYUSERPWD, CURLOPTTYPE_STRINGPOINT, 6),
1115 
1116   /* Range to get, specified as an ASCII string. */
1117   CURLOPT(CURLOPT_RANGE, CURLOPTTYPE_STRINGPOINT, 7),
1118 
1119   /* not used */
1120 
1121   /* Specified file stream to upload from (use as input): */
1122   CURLOPT(CURLOPT_READDATA, CURLOPTTYPE_CBPOINT, 9),
1123 
1124   /* Buffer to receive error messages in, must be at least CURL_ERROR_SIZE
1125    * bytes big. */
1126   CURLOPT(CURLOPT_ERRORBUFFER, CURLOPTTYPE_OBJECTPOINT, 10),
1127 
1128   /* Function that will be called to store the output (instead of fwrite). The
1129    * parameters will use fwrite() syntax, make sure to follow them. */
1130   CURLOPT(CURLOPT_WRITEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 11),
1131 
1132   /* Function that will be called to read the input (instead of fread). The
1133    * parameters will use fread() syntax, make sure to follow them. */
1134   CURLOPT(CURLOPT_READFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 12),
1135 
1136   /* Time-out the read operation after this amount of seconds */
1137   CURLOPT(CURLOPT_TIMEOUT, CURLOPTTYPE_LONG, 13),
1138 
1139   /* If CURLOPT_READDATA is used, this can be used to inform libcurl about
1140    * how large the file being sent really is. That allows better error
1141    * checking and better verifies that the upload was successful. -1 means
1142    * unknown size.
1143    *
1144    * For large file support, there is also a _LARGE version of the key
1145    * which takes an off_t type, allowing platforms with larger off_t
1146    * sizes to handle larger files.  See below for INFILESIZE_LARGE.
1147    */
1148   CURLOPT(CURLOPT_INFILESIZE, CURLOPTTYPE_LONG, 14),
1149 
1150   /* POST static input fields. */
1151   CURLOPT(CURLOPT_POSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 15),
1152 
1153   /* Set the referrer page (needed by some CGIs) */
1154   CURLOPT(CURLOPT_REFERER, CURLOPTTYPE_STRINGPOINT, 16),
1155 
1156   /* Set the FTP PORT string (interface name, named or numerical IP address)
1157      Use i.e '-' to use default address. */
1158   CURLOPT(CURLOPT_FTPPORT, CURLOPTTYPE_STRINGPOINT, 17),
1159 
1160   /* Set the User-Agent string (examined by some CGIs) */
1161   CURLOPT(CURLOPT_USERAGENT, CURLOPTTYPE_STRINGPOINT, 18),
1162 
1163   /* If the download receives less than "low speed limit" bytes/second
1164    * during "low speed time" seconds, the operations is aborted.
1165    * You could i.e if you have a pretty high speed connection, abort if
1166    * it is less than 2000 bytes/sec during 20 seconds.
1167    */
1168 
1169   /* Set the "low speed limit" */
1170   CURLOPT(CURLOPT_LOW_SPEED_LIMIT, CURLOPTTYPE_LONG, 19),
1171 
1172   /* Set the "low speed time" */
1173   CURLOPT(CURLOPT_LOW_SPEED_TIME, CURLOPTTYPE_LONG, 20),
1174 
1175   /* Set the continuation offset.
1176    *
1177    * Note there is also a _LARGE version of this key which uses
1178    * off_t types, allowing for large file offsets on platforms which
1179    * use larger-than-32-bit off_t's.  Look below for RESUME_FROM_LARGE.
1180    */
1181   CURLOPT(CURLOPT_RESUME_FROM, CURLOPTTYPE_LONG, 21),
1182 
1183   /* Set cookie in request: */
1184   CURLOPT(CURLOPT_COOKIE, CURLOPTTYPE_STRINGPOINT, 22),
1185 
1186   /* This points to a linked list of headers, struct curl_slist kind. This
1187      list is also used for RTSP (in spite of its name) */
1188   CURLOPT(CURLOPT_HTTPHEADER, CURLOPTTYPE_SLISTPOINT, 23),
1189 
1190   /* This points to a linked list of post entries, struct curl_httppost */
1191   CURLOPTDEPRECATED(CURLOPT_HTTPPOST, CURLOPTTYPE_OBJECTPOINT, 24,
1192                     7.56.0, "Use CURLOPT_MIMEPOST"),
1193 
1194   /* name of the file keeping your private SSL-certificate */
1195   CURLOPT(CURLOPT_SSLCERT, CURLOPTTYPE_STRINGPOINT, 25),
1196 
1197   /* password for the SSL or SSH private key */
1198   CURLOPT(CURLOPT_KEYPASSWD, CURLOPTTYPE_STRINGPOINT, 26),
1199 
1200   /* send TYPE parameter? */
1201   CURLOPT(CURLOPT_CRLF, CURLOPTTYPE_LONG, 27),
1202 
1203   /* send linked-list of QUOTE commands */
1204   CURLOPT(CURLOPT_QUOTE, CURLOPTTYPE_SLISTPOINT, 28),
1205 
1206   /* send FILE * or void * to store headers to, if you use a callback it
1207      is simply passed to the callback unmodified */
1208   CURLOPT(CURLOPT_HEADERDATA, CURLOPTTYPE_CBPOINT, 29),
1209 
1210   /* point to a file to read the initial cookies from, also enables
1211      "cookie awareness" */
1212   CURLOPT(CURLOPT_COOKIEFILE, CURLOPTTYPE_STRINGPOINT, 31),
1213 
1214   /* What version to specifically try to use.
1215      See CURL_SSLVERSION defines below. */
1216   CURLOPT(CURLOPT_SSLVERSION, CURLOPTTYPE_VALUES, 32),
1217 
1218   /* What kind of HTTP time condition to use, see defines */
1219   CURLOPT(CURLOPT_TIMECONDITION, CURLOPTTYPE_VALUES, 33),
1220 
1221   /* Time to use with the above condition. Specified in number of seconds
1222      since 1 Jan 1970 */
1223   CURLOPT(CURLOPT_TIMEVALUE, CURLOPTTYPE_LONG, 34),
1224 
1225   /* 35 = OBSOLETE */
1226 
1227   /* Custom request, for customizing the get command like
1228      HTTP: DELETE, TRACE and others
1229      FTP: to use a different list command
1230      */
1231   CURLOPT(CURLOPT_CUSTOMREQUEST, CURLOPTTYPE_STRINGPOINT, 36),
1232 
1233   /* FILE handle to use instead of stderr */
1234   CURLOPT(CURLOPT_STDERR, CURLOPTTYPE_OBJECTPOINT, 37),
1235 
1236   /* 38 is not used */
1237 
1238   /* send linked-list of post-transfer QUOTE commands */
1239   CURLOPT(CURLOPT_POSTQUOTE, CURLOPTTYPE_SLISTPOINT, 39),
1240 
1241    /* OBSOLETE, do not use! */
1242   CURLOPT(CURLOPT_OBSOLETE40, CURLOPTTYPE_OBJECTPOINT, 40),
1243 
1244   /* talk a lot */
1245   CURLOPT(CURLOPT_VERBOSE, CURLOPTTYPE_LONG, 41),
1246 
1247   /* throw the header out too */
1248   CURLOPT(CURLOPT_HEADER, CURLOPTTYPE_LONG, 42),
1249 
1250   /* shut off the progress meter */
1251   CURLOPT(CURLOPT_NOPROGRESS, CURLOPTTYPE_LONG, 43),
1252 
1253   /* use HEAD to get http document */
1254   CURLOPT(CURLOPT_NOBODY, CURLOPTTYPE_LONG, 44),
1255 
1256   /* no output on http error codes >= 400 */
1257   CURLOPT(CURLOPT_FAILONERROR, CURLOPTTYPE_LONG, 45),
1258 
1259   /* this is an upload */
1260   CURLOPT(CURLOPT_UPLOAD, CURLOPTTYPE_LONG, 46),
1261 
1262   /* HTTP POST method */
1263   CURLOPT(CURLOPT_POST, CURLOPTTYPE_LONG, 47),
1264 
1265   /* bare names when listing directories */
1266   CURLOPT(CURLOPT_DIRLISTONLY, CURLOPTTYPE_LONG, 48),
1267 
1268   /* Append instead of overwrite on upload! */
1269   CURLOPT(CURLOPT_APPEND, CURLOPTTYPE_LONG, 50),
1270 
1271   /* Specify whether to read the user+password from the .netrc or the URL.
1272    * This must be one of the CURL_NETRC_* enums below. */
1273   CURLOPT(CURLOPT_NETRC, CURLOPTTYPE_VALUES, 51),
1274 
1275   /* use Location: Luke! */
1276   CURLOPT(CURLOPT_FOLLOWLOCATION, CURLOPTTYPE_LONG, 52),
1277 
1278    /* transfer data in text/ASCII format */
1279   CURLOPT(CURLOPT_TRANSFERTEXT, CURLOPTTYPE_LONG, 53),
1280 
1281   /* HTTP PUT */
1282   CURLOPTDEPRECATED(CURLOPT_PUT, CURLOPTTYPE_LONG, 54,
1283                     7.12.1, "Use CURLOPT_UPLOAD"),
1284 
1285   /* 55 = OBSOLETE */
1286 
1287   /* DEPRECATED
1288    * Function that will be called instead of the internal progress display
1289    * function. This function should be defined as the curl_progress_callback
1290    * prototype defines. */
1291   CURLOPTDEPRECATED(CURLOPT_PROGRESSFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 56,
1292                     7.32.0, "Use CURLOPT_XFERINFOFUNCTION"),
1293 
1294   /* Data passed to the CURLOPT_PROGRESSFUNCTION and CURLOPT_XFERINFOFUNCTION
1295      callbacks */
1296   CURLOPT(CURLOPT_XFERINFODATA, CURLOPTTYPE_CBPOINT, 57),
1297 #define CURLOPT_PROGRESSDATA CURLOPT_XFERINFODATA
1298 
1299   /* We want the referrer field set automatically when following locations */
1300   CURLOPT(CURLOPT_AUTOREFERER, CURLOPTTYPE_LONG, 58),
1301 
1302   /* Port of the proxy, can be set in the proxy string as well with:
1303      "[host]:[port]" */
1304   CURLOPT(CURLOPT_PROXYPORT, CURLOPTTYPE_LONG, 59),
1305 
1306   /* size of the POST input data, if strlen() is not good to use */
1307   CURLOPT(CURLOPT_POSTFIELDSIZE, CURLOPTTYPE_LONG, 60),
1308 
1309   /* tunnel non-http operations through an HTTP proxy */
1310   CURLOPT(CURLOPT_HTTPPROXYTUNNEL, CURLOPTTYPE_LONG, 61),
1311 
1312   /* Set the interface string to use as outgoing network interface */
1313   CURLOPT(CURLOPT_INTERFACE, CURLOPTTYPE_STRINGPOINT, 62),
1314 
1315   /* Set the krb4/5 security level, this also enables krb4/5 awareness.  This
1316    * is a string, 'clear', 'safe', 'confidential' or 'private'.  If the string
1317    * is set but doesn't match one of these, 'private' will be used.  */
1318   CURLOPT(CURLOPT_KRBLEVEL, CURLOPTTYPE_STRINGPOINT, 63),
1319 
1320   /* Set if we should verify the peer in ssl handshake, set 1 to verify. */
1321   CURLOPT(CURLOPT_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 64),
1322 
1323   /* The CApath or CAfile used to validate the peer certificate
1324      this option is used only if SSL_VERIFYPEER is true */
1325   CURLOPT(CURLOPT_CAINFO, CURLOPTTYPE_STRINGPOINT, 65),
1326 
1327   /* 66 = OBSOLETE */
1328   /* 67 = OBSOLETE */
1329 
1330   /* Maximum number of http redirects to follow */
1331   CURLOPT(CURLOPT_MAXREDIRS, CURLOPTTYPE_LONG, 68),
1332 
1333   /* Pass a long set to 1 to get the date of the requested document (if
1334      possible)! Pass a zero to shut it off. */
1335   CURLOPT(CURLOPT_FILETIME, CURLOPTTYPE_LONG, 69),
1336 
1337   /* This points to a linked list of telnet options */
1338   CURLOPT(CURLOPT_TELNETOPTIONS, CURLOPTTYPE_SLISTPOINT, 70),
1339 
1340   /* Max amount of cached alive connections */
1341   CURLOPT(CURLOPT_MAXCONNECTS, CURLOPTTYPE_LONG, 71),
1342 
1343   /* OBSOLETE, do not use! */
1344   CURLOPT(CURLOPT_OBSOLETE72, CURLOPTTYPE_LONG, 72),
1345 
1346   /* 73 = OBSOLETE */
1347 
1348   /* Set to explicitly use a new connection for the upcoming transfer.
1349      Do not use this unless you're absolutely sure of this, as it makes the
1350      operation slower and is less friendly for the network. */
1351   CURLOPT(CURLOPT_FRESH_CONNECT, CURLOPTTYPE_LONG, 74),
1352 
1353   /* Set to explicitly forbid the upcoming transfer's connection to be reused
1354      when done. Do not use this unless you're absolutely sure of this, as it
1355      makes the operation slower and is less friendly for the network. */
1356   CURLOPT(CURLOPT_FORBID_REUSE, CURLOPTTYPE_LONG, 75),
1357 
1358   /* Set to a file name that contains random data for libcurl to use to
1359      seed the random engine when doing SSL connects. */
1360   CURLOPTDEPRECATED(CURLOPT_RANDOM_FILE, CURLOPTTYPE_STRINGPOINT, 76,
1361                     7.84.0, "Serves no purpose anymore"),
1362 
1363   /* Set to the Entropy Gathering Daemon socket pathname */
1364   CURLOPTDEPRECATED(CURLOPT_EGDSOCKET, CURLOPTTYPE_STRINGPOINT, 77,
1365                     7.84.0, "Serves no purpose anymore"),
1366 
1367   /* Time-out connect operations after this amount of seconds, if connects are
1368      OK within this time, then fine... This only aborts the connect phase. */
1369   CURLOPT(CURLOPT_CONNECTTIMEOUT, CURLOPTTYPE_LONG, 78),
1370 
1371   /* Function that will be called to store headers (instead of fwrite). The
1372    * parameters will use fwrite() syntax, make sure to follow them. */
1373   CURLOPT(CURLOPT_HEADERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 79),
1374 
1375   /* Set this to force the HTTP request to get back to GET. Only really usable
1376      if POST, PUT or a custom request have been used first.
1377    */
1378   CURLOPT(CURLOPT_HTTPGET, CURLOPTTYPE_LONG, 80),
1379 
1380   /* Set if we should verify the Common name from the peer certificate in ssl
1381    * handshake, set 1 to check existence, 2 to ensure that it matches the
1382    * provided hostname. */
1383   CURLOPT(CURLOPT_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 81),
1384 
1385   /* Specify which file name to write all known cookies in after completed
1386      operation. Set file name to "-" (dash) to make it go to stdout. */
1387   CURLOPT(CURLOPT_COOKIEJAR, CURLOPTTYPE_STRINGPOINT, 82),
1388 
1389   /* Specify which SSL ciphers to use */
1390   CURLOPT(CURLOPT_SSL_CIPHER_LIST, CURLOPTTYPE_STRINGPOINT, 83),
1391 
1392   /* Specify which HTTP version to use! This must be set to one of the
1393      CURL_HTTP_VERSION* enums set below. */
1394   CURLOPT(CURLOPT_HTTP_VERSION, CURLOPTTYPE_VALUES, 84),
1395 
1396   /* Specifically switch on or off the FTP engine's use of the EPSV command. By
1397      default, that one will always be attempted before the more traditional
1398      PASV command. */
1399   CURLOPT(CURLOPT_FTP_USE_EPSV, CURLOPTTYPE_LONG, 85),
1400 
1401   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") */
1402   CURLOPT(CURLOPT_SSLCERTTYPE, CURLOPTTYPE_STRINGPOINT, 86),
1403 
1404   /* name of the file keeping your private SSL-key */
1405   CURLOPT(CURLOPT_SSLKEY, CURLOPTTYPE_STRINGPOINT, 87),
1406 
1407   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") */
1408   CURLOPT(CURLOPT_SSLKEYTYPE, CURLOPTTYPE_STRINGPOINT, 88),
1409 
1410   /* crypto engine for the SSL-sub system */
1411   CURLOPT(CURLOPT_SSLENGINE, CURLOPTTYPE_STRINGPOINT, 89),
1412 
1413   /* set the crypto engine for the SSL-sub system as default
1414      the param has no meaning...
1415    */
1416   CURLOPT(CURLOPT_SSLENGINE_DEFAULT, CURLOPTTYPE_LONG, 90),
1417 
1418   /* Non-zero value means to use the global dns cache */
1419   /* DEPRECATED, do not use! */
1420   CURLOPTDEPRECATED(CURLOPT_DNS_USE_GLOBAL_CACHE, CURLOPTTYPE_LONG, 91,
1421                     7.11.1, "Use CURLOPT_SHARE"),
1422 
1423   /* DNS cache timeout */
1424   CURLOPT(CURLOPT_DNS_CACHE_TIMEOUT, CURLOPTTYPE_LONG, 92),
1425 
1426   /* send linked-list of pre-transfer QUOTE commands */
1427   CURLOPT(CURLOPT_PREQUOTE, CURLOPTTYPE_SLISTPOINT, 93),
1428 
1429   /* set the debug function */
1430   CURLOPT(CURLOPT_DEBUGFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 94),
1431 
1432   /* set the data for the debug function */
1433   CURLOPT(CURLOPT_DEBUGDATA, CURLOPTTYPE_CBPOINT, 95),
1434 
1435   /* mark this as start of a cookie session */
1436   CURLOPT(CURLOPT_COOKIESESSION, CURLOPTTYPE_LONG, 96),
1437 
1438   /* The CApath directory used to validate the peer certificate
1439      this option is used only if SSL_VERIFYPEER is true */
1440   CURLOPT(CURLOPT_CAPATH, CURLOPTTYPE_STRINGPOINT, 97),
1441 
1442   /* Instruct libcurl to use a smaller receive buffer */
1443   CURLOPT(CURLOPT_BUFFERSIZE, CURLOPTTYPE_LONG, 98),
1444 
1445   /* Instruct libcurl to not use any signal/alarm handlers, even when using
1446      timeouts. This option is useful for multi-threaded applications.
1447      See libcurl-the-guide for more background information. */
1448   CURLOPT(CURLOPT_NOSIGNAL, CURLOPTTYPE_LONG, 99),
1449 
1450   /* Provide a CURLShare for mutexing non-ts data */
1451   CURLOPT(CURLOPT_SHARE, CURLOPTTYPE_OBJECTPOINT, 100),
1452 
1453   /* indicates type of proxy. accepted values are CURLPROXY_HTTP (default),
1454      CURLPROXY_HTTPS, CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and
1455      CURLPROXY_SOCKS5. */
1456   CURLOPT(CURLOPT_PROXYTYPE, CURLOPTTYPE_VALUES, 101),
1457 
1458   /* Set the Accept-Encoding string. Use this to tell a server you would like
1459      the response to be compressed. Before 7.21.6, this was known as
1460      CURLOPT_ENCODING */
1461   CURLOPT(CURLOPT_ACCEPT_ENCODING, CURLOPTTYPE_STRINGPOINT, 102),
1462 
1463   /* Set pointer to private data */
1464   CURLOPT(CURLOPT_PRIVATE, CURLOPTTYPE_OBJECTPOINT, 103),
1465 
1466   /* Set aliases for HTTP 200 in the HTTP Response header */
1467   CURLOPT(CURLOPT_HTTP200ALIASES, CURLOPTTYPE_SLISTPOINT, 104),
1468 
1469   /* Continue to send authentication (user+password) when following locations,
1470      even when hostname changed. This can potentially send off the name
1471      and password to whatever host the server decides. */
1472   CURLOPT(CURLOPT_UNRESTRICTED_AUTH, CURLOPTTYPE_LONG, 105),
1473 
1474   /* Specifically switch on or off the FTP engine's use of the EPRT command (
1475      it also disables the LPRT attempt). By default, those ones will always be
1476      attempted before the good old traditional PORT command. */
1477   CURLOPT(CURLOPT_FTP_USE_EPRT, CURLOPTTYPE_LONG, 106),
1478 
1479   /* Set this to a bitmask value to enable the particular authentications
1480      methods you like. Use this in combination with CURLOPT_USERPWD.
1481      Note that setting multiple bits may cause extra network round-trips. */
1482   CURLOPT(CURLOPT_HTTPAUTH, CURLOPTTYPE_VALUES, 107),
1483 
1484   /* Set the ssl context callback function, currently only for OpenSSL or
1485      WolfSSL ssl_ctx, or mbedTLS mbedtls_ssl_config in the second argument.
1486      The function must match the curl_ssl_ctx_callback prototype. */
1487   CURLOPT(CURLOPT_SSL_CTX_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 108),
1488 
1489   /* Set the userdata for the ssl context callback function's third
1490      argument */
1491   CURLOPT(CURLOPT_SSL_CTX_DATA, CURLOPTTYPE_CBPOINT, 109),
1492 
1493   /* FTP Option that causes missing dirs to be created on the remote server.
1494      In 7.19.4 we introduced the convenience enums for this option using the
1495      CURLFTP_CREATE_DIR prefix.
1496   */
1497   CURLOPT(CURLOPT_FTP_CREATE_MISSING_DIRS, CURLOPTTYPE_LONG, 110),
1498 
1499   /* Set this to a bitmask value to enable the particular authentications
1500      methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
1501      Note that setting multiple bits may cause extra network round-trips. */
1502   CURLOPT(CURLOPT_PROXYAUTH, CURLOPTTYPE_VALUES, 111),
1503 
1504   /* Option that changes the timeout, in seconds, associated with getting a
1505      response.  This is different from transfer timeout time and essentially
1506      places a demand on the server to acknowledge commands in a timely
1507      manner. For FTP, SMTP, IMAP and POP3. */
1508   CURLOPT(CURLOPT_SERVER_RESPONSE_TIMEOUT, CURLOPTTYPE_LONG, 112),
1509 
1510   /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
1511      tell libcurl to use those IP versions only. This only has effect on
1512      systems with support for more than one, i.e IPv4 _and_ IPv6. */
1513   CURLOPT(CURLOPT_IPRESOLVE, CURLOPTTYPE_VALUES, 113),
1514 
1515   /* Set this option to limit the size of a file that will be downloaded from
1516      an HTTP or FTP server.
1517 
1518      Note there is also _LARGE version which adds large file support for
1519      platforms which have larger off_t sizes.  See MAXFILESIZE_LARGE below. */
1520   CURLOPT(CURLOPT_MAXFILESIZE, CURLOPTTYPE_LONG, 114),
1521 
1522   /* See the comment for INFILESIZE above, but in short, specifies
1523    * the size of the file being uploaded.  -1 means unknown.
1524    */
1525   CURLOPT(CURLOPT_INFILESIZE_LARGE, CURLOPTTYPE_OFF_T, 115),
1526 
1527   /* Sets the continuation offset.  There is also a CURLOPTTYPE_LONG version
1528    * of this; look above for RESUME_FROM.
1529    */
1530   CURLOPT(CURLOPT_RESUME_FROM_LARGE, CURLOPTTYPE_OFF_T, 116),
1531 
1532   /* Sets the maximum size of data that will be downloaded from
1533    * an HTTP or FTP server.  See MAXFILESIZE above for the LONG version.
1534    */
1535   CURLOPT(CURLOPT_MAXFILESIZE_LARGE, CURLOPTTYPE_OFF_T, 117),
1536 
1537   /* Set this option to the file name of your .netrc file you want libcurl
1538      to parse (using the CURLOPT_NETRC option). If not set, libcurl will do
1539      a poor attempt to find the user's home directory and check for a .netrc
1540      file in there. */
1541   CURLOPT(CURLOPT_NETRC_FILE, CURLOPTTYPE_STRINGPOINT, 118),
1542 
1543   /* Enable SSL/TLS for FTP, pick one of:
1544      CURLUSESSL_TRY     - try using SSL, proceed anyway otherwise
1545      CURLUSESSL_CONTROL - SSL for the control connection or fail
1546      CURLUSESSL_ALL     - SSL for all communication or fail
1547   */
1548   CURLOPT(CURLOPT_USE_SSL, CURLOPTTYPE_VALUES, 119),
1549 
1550   /* The _LARGE version of the standard POSTFIELDSIZE option */
1551   CURLOPT(CURLOPT_POSTFIELDSIZE_LARGE, CURLOPTTYPE_OFF_T, 120),
1552 
1553   /* Enable/disable the TCP Nagle algorithm */
1554   CURLOPT(CURLOPT_TCP_NODELAY, CURLOPTTYPE_LONG, 121),
1555 
1556   /* 122 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1557   /* 123 OBSOLETE. Gone in 7.16.0 */
1558   /* 124 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1559   /* 125 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1560   /* 126 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
1561   /* 127 OBSOLETE. Gone in 7.16.0 */
1562   /* 128 OBSOLETE. Gone in 7.16.0 */
1563 
1564   /* When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option
1565      can be used to change libcurl's default action which is to first try
1566      "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK
1567      response has been received.
1568 
1569      Available parameters are:
1570      CURLFTPAUTH_DEFAULT - let libcurl decide
1571      CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
1572      CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
1573   */
1574   CURLOPT(CURLOPT_FTPSSLAUTH, CURLOPTTYPE_VALUES, 129),
1575 
1576   CURLOPTDEPRECATED(CURLOPT_IOCTLFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 130,
1577                     7.18.0, "Use CURLOPT_SEEKFUNCTION"),
1578   CURLOPTDEPRECATED(CURLOPT_IOCTLDATA, CURLOPTTYPE_CBPOINT, 131,
1579                     7.18.0, "Use CURLOPT_SEEKDATA"),
1580 
1581   /* 132 OBSOLETE. Gone in 7.16.0 */
1582   /* 133 OBSOLETE. Gone in 7.16.0 */
1583 
1584   /* null-terminated string for pass on to the FTP server when asked for
1585      "account" info */
1586   CURLOPT(CURLOPT_FTP_ACCOUNT, CURLOPTTYPE_STRINGPOINT, 134),
1587 
1588   /* feed cookie into cookie engine */
1589   CURLOPT(CURLOPT_COOKIELIST, CURLOPTTYPE_STRINGPOINT, 135),
1590 
1591   /* ignore Content-Length */
1592   CURLOPT(CURLOPT_IGNORE_CONTENT_LENGTH, CURLOPTTYPE_LONG, 136),
1593 
1594   /* Set to non-zero to skip the IP address received in a 227 PASV FTP server
1595      response. Typically used for FTP-SSL purposes but is not restricted to
1596      that. libcurl will then instead use the same IP address it used for the
1597      control connection. */
1598   CURLOPT(CURLOPT_FTP_SKIP_PASV_IP, CURLOPTTYPE_LONG, 137),
1599 
1600   /* Select "file method" to use when doing FTP, see the curl_ftpmethod
1601      above. */
1602   CURLOPT(CURLOPT_FTP_FILEMETHOD, CURLOPTTYPE_VALUES, 138),
1603 
1604   /* Local port number to bind the socket to */
1605   CURLOPT(CURLOPT_LOCALPORT, CURLOPTTYPE_LONG, 139),
1606 
1607   /* Number of ports to try, including the first one set with LOCALPORT.
1608      Thus, setting it to 1 will make no additional attempts but the first.
1609   */
1610   CURLOPT(CURLOPT_LOCALPORTRANGE, CURLOPTTYPE_LONG, 140),
1611 
1612   /* no transfer, set up connection and let application use the socket by
1613      extracting it with CURLINFO_LASTSOCKET */
1614   CURLOPT(CURLOPT_CONNECT_ONLY, CURLOPTTYPE_LONG, 141),
1615 
1616   /* Function that will be called to convert from the
1617      network encoding (instead of using the iconv calls in libcurl) */
1618   CURLOPTDEPRECATED(CURLOPT_CONV_FROM_NETWORK_FUNCTION,
1619                     CURLOPTTYPE_FUNCTIONPOINT, 142,
1620                     7.82.0, "Serves no purpose anymore"),
1621 
1622   /* Function that will be called to convert to the
1623      network encoding (instead of using the iconv calls in libcurl) */
1624   CURLOPTDEPRECATED(CURLOPT_CONV_TO_NETWORK_FUNCTION,
1625                     CURLOPTTYPE_FUNCTIONPOINT, 143,
1626                     7.82.0, "Serves no purpose anymore"),
1627 
1628   /* Function that will be called to convert from UTF8
1629      (instead of using the iconv calls in libcurl)
1630      Note that this is used only for SSL certificate processing */
1631   CURLOPTDEPRECATED(CURLOPT_CONV_FROM_UTF8_FUNCTION,
1632                     CURLOPTTYPE_FUNCTIONPOINT, 144,
1633                     7.82.0, "Serves no purpose anymore"),
1634 
1635   /* if the connection proceeds too quickly then need to slow it down */
1636   /* limit-rate: maximum number of bytes per second to send or receive */
1637   CURLOPT(CURLOPT_MAX_SEND_SPEED_LARGE, CURLOPTTYPE_OFF_T, 145),
1638   CURLOPT(CURLOPT_MAX_RECV_SPEED_LARGE, CURLOPTTYPE_OFF_T, 146),
1639 
1640   /* Pointer to command string to send if USER/PASS fails. */
1641   CURLOPT(CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPTTYPE_STRINGPOINT, 147),
1642 
1643   /* callback function for setting socket options */
1644   CURLOPT(CURLOPT_SOCKOPTFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 148),
1645   CURLOPT(CURLOPT_SOCKOPTDATA, CURLOPTTYPE_CBPOINT, 149),
1646 
1647   /* set to 0 to disable session ID reuse for this transfer, default is
1648      enabled (== 1) */
1649   CURLOPT(CURLOPT_SSL_SESSIONID_CACHE, CURLOPTTYPE_LONG, 150),
1650 
1651   /* allowed SSH authentication methods */
1652   CURLOPT(CURLOPT_SSH_AUTH_TYPES, CURLOPTTYPE_VALUES, 151),
1653 
1654   /* Used by scp/sftp to do public/private key authentication */
1655   CURLOPT(CURLOPT_SSH_PUBLIC_KEYFILE, CURLOPTTYPE_STRINGPOINT, 152),
1656   CURLOPT(CURLOPT_SSH_PRIVATE_KEYFILE, CURLOPTTYPE_STRINGPOINT, 153),
1657 
1658   /* Send CCC (Clear Command Channel) after authentication */
1659   CURLOPT(CURLOPT_FTP_SSL_CCC, CURLOPTTYPE_LONG, 154),
1660 
1661   /* Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution */
1662   CURLOPT(CURLOPT_TIMEOUT_MS, CURLOPTTYPE_LONG, 155),
1663   CURLOPT(CURLOPT_CONNECTTIMEOUT_MS, CURLOPTTYPE_LONG, 156),
1664 
1665   /* set to zero to disable the libcurl's decoding and thus pass the raw body
1666      data to the application even when it is encoded/compressed */
1667   CURLOPT(CURLOPT_HTTP_TRANSFER_DECODING, CURLOPTTYPE_LONG, 157),
1668   CURLOPT(CURLOPT_HTTP_CONTENT_DECODING, CURLOPTTYPE_LONG, 158),
1669 
1670   /* Permission used when creating new files and directories on the remote
1671      server for protocols that support it, SFTP/SCP/FILE */
1672   CURLOPT(CURLOPT_NEW_FILE_PERMS, CURLOPTTYPE_LONG, 159),
1673   CURLOPT(CURLOPT_NEW_DIRECTORY_PERMS, CURLOPTTYPE_LONG, 160),
1674 
1675   /* Set the behavior of POST when redirecting. Values must be set to one
1676      of CURL_REDIR* defines below. This used to be called CURLOPT_POST301 */
1677   CURLOPT(CURLOPT_POSTREDIR, CURLOPTTYPE_VALUES, 161),
1678 
1679   /* used by scp/sftp to verify the host's public key */
1680   CURLOPT(CURLOPT_SSH_HOST_PUBLIC_KEY_MD5, CURLOPTTYPE_STRINGPOINT, 162),
1681 
1682   /* Callback function for opening socket (instead of socket(2)). Optionally,
1683      callback is able change the address or refuse to connect returning
1684      CURL_SOCKET_BAD.  The callback should have type
1685      curl_opensocket_callback */
1686   CURLOPT(CURLOPT_OPENSOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 163),
1687   CURLOPT(CURLOPT_OPENSOCKETDATA, CURLOPTTYPE_CBPOINT, 164),
1688 
1689   /* POST volatile input fields. */
1690   CURLOPT(CURLOPT_COPYPOSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 165),
1691 
1692   /* set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy */
1693   CURLOPT(CURLOPT_PROXY_TRANSFER_MODE, CURLOPTTYPE_LONG, 166),
1694 
1695   /* Callback function for seeking in the input stream */
1696   CURLOPT(CURLOPT_SEEKFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 167),
1697   CURLOPT(CURLOPT_SEEKDATA, CURLOPTTYPE_CBPOINT, 168),
1698 
1699   /* CRL file */
1700   CURLOPT(CURLOPT_CRLFILE, CURLOPTTYPE_STRINGPOINT, 169),
1701 
1702   /* Issuer certificate */
1703   CURLOPT(CURLOPT_ISSUERCERT, CURLOPTTYPE_STRINGPOINT, 170),
1704 
1705   /* (IPv6) Address scope */
1706   CURLOPT(CURLOPT_ADDRESS_SCOPE, CURLOPTTYPE_LONG, 171),
1707 
1708   /* Collect certificate chain info and allow it to get retrievable with
1709      CURLINFO_CERTINFO after the transfer is complete. */
1710   CURLOPT(CURLOPT_CERTINFO, CURLOPTTYPE_LONG, 172),
1711 
1712   /* "name" and "pwd" to use when fetching. */
1713   CURLOPT(CURLOPT_USERNAME, CURLOPTTYPE_STRINGPOINT, 173),
1714   CURLOPT(CURLOPT_PASSWORD, CURLOPTTYPE_STRINGPOINT, 174),
1715 
1716     /* "name" and "pwd" to use with Proxy when fetching. */
1717   CURLOPT(CURLOPT_PROXYUSERNAME, CURLOPTTYPE_STRINGPOINT, 175),
1718   CURLOPT(CURLOPT_PROXYPASSWORD, CURLOPTTYPE_STRINGPOINT, 176),
1719 
1720   /* Comma separated list of hostnames defining no-proxy zones. These should
1721      match both hostnames directly, and hostnames within a domain. For
1722      example, local.com will match local.com and www.local.com, but NOT
1723      notlocal.com or www.notlocal.com. For compatibility with other
1724      implementations of this, .local.com will be considered to be the same as
1725      local.com. A single * is the only valid wildcard, and effectively
1726      disables the use of proxy. */
1727   CURLOPT(CURLOPT_NOPROXY, CURLOPTTYPE_STRINGPOINT, 177),
1728 
1729   /* block size for TFTP transfers */
1730   CURLOPT(CURLOPT_TFTP_BLKSIZE, CURLOPTTYPE_LONG, 178),
1731 
1732   /* Socks Service */
1733   /* DEPRECATED, do not use! */
1734   CURLOPTDEPRECATED(CURLOPT_SOCKS5_GSSAPI_SERVICE,
1735                     CURLOPTTYPE_STRINGPOINT, 179,
1736                     7.49.0, "Use CURLOPT_PROXY_SERVICE_NAME"),
1737 
1738   /* Socks Service */
1739   CURLOPT(CURLOPT_SOCKS5_GSSAPI_NEC, CURLOPTTYPE_LONG, 180),
1740 
1741   /* set the bitmask for the protocols that are allowed to be used for the
1742      transfer, which thus helps the app which takes URLs from users or other
1743      external inputs and want to restrict what protocol(s) to deal
1744      with. Defaults to CURLPROTO_ALL. */
1745   CURLOPTDEPRECATED(CURLOPT_PROTOCOLS, CURLOPTTYPE_LONG, 181,
1746                     7.85.0, "Use CURLOPT_PROTOCOLS_STR"),
1747 
1748   /* set the bitmask for the protocols that libcurl is allowed to follow to,
1749      as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
1750      to be set in both bitmasks to be allowed to get redirected to. */
1751   CURLOPTDEPRECATED(CURLOPT_REDIR_PROTOCOLS, CURLOPTTYPE_LONG, 182,
1752                     7.85.0, "Use CURLOPT_REDIR_PROTOCOLS_STR"),
1753 
1754   /* set the SSH knownhost file name to use */
1755   CURLOPT(CURLOPT_SSH_KNOWNHOSTS, CURLOPTTYPE_STRINGPOINT, 183),
1756 
1757   /* set the SSH host key callback, must point to a curl_sshkeycallback
1758      function */
1759   CURLOPT(CURLOPT_SSH_KEYFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 184),
1760 
1761   /* set the SSH host key callback custom pointer */
1762   CURLOPT(CURLOPT_SSH_KEYDATA, CURLOPTTYPE_CBPOINT, 185),
1763 
1764   /* set the SMTP mail originator */
1765   CURLOPT(CURLOPT_MAIL_FROM, CURLOPTTYPE_STRINGPOINT, 186),
1766 
1767   /* set the list of SMTP mail receiver(s) */
1768   CURLOPT(CURLOPT_MAIL_RCPT, CURLOPTTYPE_SLISTPOINT, 187),
1769 
1770   /* FTP: send PRET before PASV */
1771   CURLOPT(CURLOPT_FTP_USE_PRET, CURLOPTTYPE_LONG, 188),
1772 
1773   /* RTSP request method (OPTIONS, SETUP, PLAY, etc...) */
1774   CURLOPT(CURLOPT_RTSP_REQUEST, CURLOPTTYPE_VALUES, 189),
1775 
1776   /* The RTSP session identifier */
1777   CURLOPT(CURLOPT_RTSP_SESSION_ID, CURLOPTTYPE_STRINGPOINT, 190),
1778 
1779   /* The RTSP stream URI */
1780   CURLOPT(CURLOPT_RTSP_STREAM_URI, CURLOPTTYPE_STRINGPOINT, 191),
1781 
1782   /* The Transport: header to use in RTSP requests */
1783   CURLOPT(CURLOPT_RTSP_TRANSPORT, CURLOPTTYPE_STRINGPOINT, 192),
1784 
1785   /* Manually initialize the client RTSP CSeq for this handle */
1786   CURLOPT(CURLOPT_RTSP_CLIENT_CSEQ, CURLOPTTYPE_LONG, 193),
1787 
1788   /* Manually initialize the server RTSP CSeq for this handle */
1789   CURLOPT(CURLOPT_RTSP_SERVER_CSEQ, CURLOPTTYPE_LONG, 194),
1790 
1791   /* The stream to pass to INTERLEAVEFUNCTION. */
1792   CURLOPT(CURLOPT_INTERLEAVEDATA, CURLOPTTYPE_CBPOINT, 195),
1793 
1794   /* Let the application define a custom write method for RTP data */
1795   CURLOPT(CURLOPT_INTERLEAVEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 196),
1796 
1797   /* Turn on wildcard matching */
1798   CURLOPT(CURLOPT_WILDCARDMATCH, CURLOPTTYPE_LONG, 197),
1799 
1800   /* Directory matching callback called before downloading of an
1801      individual file (chunk) started */
1802   CURLOPT(CURLOPT_CHUNK_BGN_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 198),
1803 
1804   /* Directory matching callback called after the file (chunk)
1805      was downloaded, or skipped */
1806   CURLOPT(CURLOPT_CHUNK_END_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 199),
1807 
1808   /* Change match (fnmatch-like) callback for wildcard matching */
1809   CURLOPT(CURLOPT_FNMATCH_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 200),
1810 
1811   /* Let the application define custom chunk data pointer */
1812   CURLOPT(CURLOPT_CHUNK_DATA, CURLOPTTYPE_CBPOINT, 201),
1813 
1814   /* FNMATCH_FUNCTION user pointer */
1815   CURLOPT(CURLOPT_FNMATCH_DATA, CURLOPTTYPE_CBPOINT, 202),
1816 
1817   /* send linked-list of name:port:address sets */
1818   CURLOPT(CURLOPT_RESOLVE, CURLOPTTYPE_SLISTPOINT, 203),
1819 
1820   /* Set a username for authenticated TLS */
1821   CURLOPT(CURLOPT_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 204),
1822 
1823   /* Set a password for authenticated TLS */
1824   CURLOPT(CURLOPT_TLSAUTH_PASSWORD, CURLOPTTYPE_STRINGPOINT, 205),
1825 
1826   /* Set authentication type for authenticated TLS */
1827   CURLOPT(CURLOPT_TLSAUTH_TYPE, CURLOPTTYPE_STRINGPOINT, 206),
1828 
1829   /* Set to 1 to enable the "TE:" header in HTTP requests to ask for
1830      compressed transfer-encoded responses. Set to 0 to disable the use of TE:
1831      in outgoing requests. The current default is 0, but it might change in a
1832      future libcurl release.
1833 
1834      libcurl will ask for the compressed methods it knows of, and if that
1835      isn't any, it will not ask for transfer-encoding at all even if this
1836      option is set to 1.
1837 
1838   */
1839   CURLOPT(CURLOPT_TRANSFER_ENCODING, CURLOPTTYPE_LONG, 207),
1840 
1841   /* Callback function for closing socket (instead of close(2)). The callback
1842      should have type curl_closesocket_callback */
1843   CURLOPT(CURLOPT_CLOSESOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 208),
1844   CURLOPT(CURLOPT_CLOSESOCKETDATA, CURLOPTTYPE_CBPOINT, 209),
1845 
1846   /* allow GSSAPI credential delegation */
1847   CURLOPT(CURLOPT_GSSAPI_DELEGATION, CURLOPTTYPE_VALUES, 210),
1848 
1849   /* Set the name servers to use for DNS resolution.
1850    * Only supported by the c-ares DNS backend */
1851   CURLOPT(CURLOPT_DNS_SERVERS, CURLOPTTYPE_STRINGPOINT, 211),
1852 
1853   /* Time-out accept operations (currently for FTP only) after this amount
1854      of milliseconds. */
1855   CURLOPT(CURLOPT_ACCEPTTIMEOUT_MS, CURLOPTTYPE_LONG, 212),
1856 
1857   /* Set TCP keepalive */
1858   CURLOPT(CURLOPT_TCP_KEEPALIVE, CURLOPTTYPE_LONG, 213),
1859 
1860   /* non-universal keepalive knobs (Linux, AIX, HP-UX, more) */
1861   CURLOPT(CURLOPT_TCP_KEEPIDLE, CURLOPTTYPE_LONG, 214),
1862   CURLOPT(CURLOPT_TCP_KEEPINTVL, CURLOPTTYPE_LONG, 215),
1863 
1864   /* Enable/disable specific SSL features with a bitmask, see CURLSSLOPT_* */
1865   CURLOPT(CURLOPT_SSL_OPTIONS, CURLOPTTYPE_VALUES, 216),
1866 
1867   /* Set the SMTP auth originator */
1868   CURLOPT(CURLOPT_MAIL_AUTH, CURLOPTTYPE_STRINGPOINT, 217),
1869 
1870   /* Enable/disable SASL initial response */
1871   CURLOPT(CURLOPT_SASL_IR, CURLOPTTYPE_LONG, 218),
1872 
1873   /* Function that will be called instead of the internal progress display
1874    * function. This function should be defined as the curl_xferinfo_callback
1875    * prototype defines. (Deprecates CURLOPT_PROGRESSFUNCTION) */
1876   CURLOPT(CURLOPT_XFERINFOFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 219),
1877 
1878   /* The XOAUTH2 bearer token */
1879   CURLOPT(CURLOPT_XOAUTH2_BEARER, CURLOPTTYPE_STRINGPOINT, 220),
1880 
1881   /* Set the interface string to use as outgoing network
1882    * interface for DNS requests.
1883    * Only supported by the c-ares DNS backend */
1884   CURLOPT(CURLOPT_DNS_INTERFACE, CURLOPTTYPE_STRINGPOINT, 221),
1885 
1886   /* Set the local IPv4 address to use for outgoing DNS requests.
1887    * Only supported by the c-ares DNS backend */
1888   CURLOPT(CURLOPT_DNS_LOCAL_IP4, CURLOPTTYPE_STRINGPOINT, 222),
1889 
1890   /* Set the local IPv6 address to use for outgoing DNS requests.
1891    * Only supported by the c-ares DNS backend */
1892   CURLOPT(CURLOPT_DNS_LOCAL_IP6, CURLOPTTYPE_STRINGPOINT, 223),
1893 
1894   /* Set authentication options directly */
1895   CURLOPT(CURLOPT_LOGIN_OPTIONS, CURLOPTTYPE_STRINGPOINT, 224),
1896 
1897   /* Enable/disable TLS NPN extension (http2 over ssl might fail without) */
1898   CURLOPTDEPRECATED(CURLOPT_SSL_ENABLE_NPN, CURLOPTTYPE_LONG, 225,
1899                     7.86.0, "Has no function"),
1900 
1901   /* Enable/disable TLS ALPN extension (http2 over ssl might fail without) */
1902   CURLOPT(CURLOPT_SSL_ENABLE_ALPN, CURLOPTTYPE_LONG, 226),
1903 
1904   /* Time to wait for a response to an HTTP request containing an
1905    * Expect: 100-continue header before sending the data anyway. */
1906   CURLOPT(CURLOPT_EXPECT_100_TIMEOUT_MS, CURLOPTTYPE_LONG, 227),
1907 
1908   /* This points to a linked list of headers used for proxy requests only,
1909      struct curl_slist kind */
1910   CURLOPT(CURLOPT_PROXYHEADER, CURLOPTTYPE_SLISTPOINT, 228),
1911 
1912   /* Pass in a bitmask of "header options" */
1913   CURLOPT(CURLOPT_HEADEROPT, CURLOPTTYPE_VALUES, 229),
1914 
1915   /* The public key in DER form used to validate the peer public key
1916      this option is used only if SSL_VERIFYPEER is true */
1917   CURLOPT(CURLOPT_PINNEDPUBLICKEY, CURLOPTTYPE_STRINGPOINT, 230),
1918 
1919   /* Path to Unix domain socket */
1920   CURLOPT(CURLOPT_UNIX_SOCKET_PATH, CURLOPTTYPE_STRINGPOINT, 231),
1921 
1922   /* Set if we should verify the certificate status. */
1923   CURLOPT(CURLOPT_SSL_VERIFYSTATUS, CURLOPTTYPE_LONG, 232),
1924 
1925   /* Set if we should enable TLS false start. */
1926   CURLOPT(CURLOPT_SSL_FALSESTART, CURLOPTTYPE_LONG, 233),
1927 
1928   /* Do not squash dot-dot sequences */
1929   CURLOPT(CURLOPT_PATH_AS_IS, CURLOPTTYPE_LONG, 234),
1930 
1931   /* Proxy Service Name */
1932   CURLOPT(CURLOPT_PROXY_SERVICE_NAME, CURLOPTTYPE_STRINGPOINT, 235),
1933 
1934   /* Service Name */
1935   CURLOPT(CURLOPT_SERVICE_NAME, CURLOPTTYPE_STRINGPOINT, 236),
1936 
1937   /* Wait/don't wait for pipe/mutex to clarify */
1938   CURLOPT(CURLOPT_PIPEWAIT, CURLOPTTYPE_LONG, 237),
1939 
1940   /* Set the protocol used when curl is given a URL without a protocol */
1941   CURLOPT(CURLOPT_DEFAULT_PROTOCOL, CURLOPTTYPE_STRINGPOINT, 238),
1942 
1943   /* Set stream weight, 1 - 256 (default is 16) */
1944   CURLOPT(CURLOPT_STREAM_WEIGHT, CURLOPTTYPE_LONG, 239),
1945 
1946   /* Set stream dependency on another CURL handle */
1947   CURLOPT(CURLOPT_STREAM_DEPENDS, CURLOPTTYPE_OBJECTPOINT, 240),
1948 
1949   /* Set E-xclusive stream dependency on another CURL handle */
1950   CURLOPT(CURLOPT_STREAM_DEPENDS_E, CURLOPTTYPE_OBJECTPOINT, 241),
1951 
1952   /* Do not send any tftp option requests to the server */
1953   CURLOPT(CURLOPT_TFTP_NO_OPTIONS, CURLOPTTYPE_LONG, 242),
1954 
1955   /* Linked-list of host:port:connect-to-host:connect-to-port,
1956      overrides the URL's host:port (only for the network layer) */
1957   CURLOPT(CURLOPT_CONNECT_TO, CURLOPTTYPE_SLISTPOINT, 243),
1958 
1959   /* Set TCP Fast Open */
1960   CURLOPT(CURLOPT_TCP_FASTOPEN, CURLOPTTYPE_LONG, 244),
1961 
1962   /* Continue to send data if the server responds early with an
1963    * HTTP status code >= 300 */
1964   CURLOPT(CURLOPT_KEEP_SENDING_ON_ERROR, CURLOPTTYPE_LONG, 245),
1965 
1966   /* The CApath or CAfile used to validate the proxy certificate
1967      this option is used only if PROXY_SSL_VERIFYPEER is true */
1968   CURLOPT(CURLOPT_PROXY_CAINFO, CURLOPTTYPE_STRINGPOINT, 246),
1969 
1970   /* The CApath directory used to validate the proxy certificate
1971      this option is used only if PROXY_SSL_VERIFYPEER is true */
1972   CURLOPT(CURLOPT_PROXY_CAPATH, CURLOPTTYPE_STRINGPOINT, 247),
1973 
1974   /* Set if we should verify the proxy in ssl handshake,
1975      set 1 to verify. */
1976   CURLOPT(CURLOPT_PROXY_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 248),
1977 
1978   /* Set if we should verify the Common name from the proxy certificate in ssl
1979    * handshake, set 1 to check existence, 2 to ensure that it matches
1980    * the provided hostname. */
1981   CURLOPT(CURLOPT_PROXY_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 249),
1982 
1983   /* What version to specifically try to use for proxy.
1984      See CURL_SSLVERSION defines below. */
1985   CURLOPT(CURLOPT_PROXY_SSLVERSION, CURLOPTTYPE_VALUES, 250),
1986 
1987   /* Set a username for authenticated TLS for proxy */
1988   CURLOPT(CURLOPT_PROXY_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 251),
1989 
1990   /* Set a password for authenticated TLS for proxy */
1991   CURLOPT(CURLOPT_PROXY_TLSAUTH_PASSWORD, CURLOPTTYPE_STRINGPOINT, 252),
1992 
1993   /* Set authentication type for authenticated TLS for proxy */
1994   CURLOPT(CURLOPT_PROXY_TLSAUTH_TYPE, CURLOPTTYPE_STRINGPOINT, 253),
1995 
1996   /* name of the file keeping your private SSL-certificate for proxy */
1997   CURLOPT(CURLOPT_PROXY_SSLCERT, CURLOPTTYPE_STRINGPOINT, 254),
1998 
1999   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") for
2000      proxy */
2001   CURLOPT(CURLOPT_PROXY_SSLCERTTYPE, CURLOPTTYPE_STRINGPOINT, 255),
2002 
2003   /* name of the file keeping your private SSL-key for proxy */
2004   CURLOPT(CURLOPT_PROXY_SSLKEY, CURLOPTTYPE_STRINGPOINT, 256),
2005 
2006   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") for
2007      proxy */
2008   CURLOPT(CURLOPT_PROXY_SSLKEYTYPE, CURLOPTTYPE_STRINGPOINT, 257),
2009 
2010   /* password for the SSL private key for proxy */
2011   CURLOPT(CURLOPT_PROXY_KEYPASSWD, CURLOPTTYPE_STRINGPOINT, 258),
2012 
2013   /* Specify which SSL ciphers to use for proxy */
2014   CURLOPT(CURLOPT_PROXY_SSL_CIPHER_LIST, CURLOPTTYPE_STRINGPOINT, 259),
2015 
2016   /* CRL file for proxy */
2017   CURLOPT(CURLOPT_PROXY_CRLFILE, CURLOPTTYPE_STRINGPOINT, 260),
2018 
2019   /* Enable/disable specific SSL features with a bitmask for proxy, see
2020      CURLSSLOPT_* */
2021   CURLOPT(CURLOPT_PROXY_SSL_OPTIONS, CURLOPTTYPE_LONG, 261),
2022 
2023   /* Name of pre proxy to use. */
2024   CURLOPT(CURLOPT_PRE_PROXY, CURLOPTTYPE_STRINGPOINT, 262),
2025 
2026   /* The public key in DER form used to validate the proxy public key
2027      this option is used only if PROXY_SSL_VERIFYPEER is true */
2028   CURLOPT(CURLOPT_PROXY_PINNEDPUBLICKEY, CURLOPTTYPE_STRINGPOINT, 263),
2029 
2030   /* Path to an abstract Unix domain socket */
2031   CURLOPT(CURLOPT_ABSTRACT_UNIX_SOCKET, CURLOPTTYPE_STRINGPOINT, 264),
2032 
2033   /* Suppress proxy CONNECT response headers from user callbacks */
2034   CURLOPT(CURLOPT_SUPPRESS_CONNECT_HEADERS, CURLOPTTYPE_LONG, 265),
2035 
2036   /* The request target, instead of extracted from the URL */
2037   CURLOPT(CURLOPT_REQUEST_TARGET, CURLOPTTYPE_STRINGPOINT, 266),
2038 
2039   /* bitmask of allowed auth methods for connections to SOCKS5 proxies */
2040   CURLOPT(CURLOPT_SOCKS5_AUTH, CURLOPTTYPE_LONG, 267),
2041 
2042   /* Enable/disable SSH compression */
2043   CURLOPT(CURLOPT_SSH_COMPRESSION, CURLOPTTYPE_LONG, 268),
2044 
2045   /* Post MIME data. */
2046   CURLOPT(CURLOPT_MIMEPOST, CURLOPTTYPE_OBJECTPOINT, 269),
2047 
2048   /* Time to use with the CURLOPT_TIMECONDITION. Specified in number of
2049      seconds since 1 Jan 1970. */
2050   CURLOPT(CURLOPT_TIMEVALUE_LARGE, CURLOPTTYPE_OFF_T, 270),
2051 
2052   /* Head start in milliseconds to give happy eyeballs. */
2053   CURLOPT(CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS, CURLOPTTYPE_LONG, 271),
2054 
2055   /* Function that will be called before a resolver request is made */
2056   CURLOPT(CURLOPT_RESOLVER_START_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 272),
2057 
2058   /* User data to pass to the resolver start callback. */
2059   CURLOPT(CURLOPT_RESOLVER_START_DATA, CURLOPTTYPE_CBPOINT, 273),
2060 
2061   /* send HAProxy PROXY protocol header? */
2062   CURLOPT(CURLOPT_HAPROXYPROTOCOL, CURLOPTTYPE_LONG, 274),
2063 
2064   /* shuffle addresses before use when DNS returns multiple */
2065   CURLOPT(CURLOPT_DNS_SHUFFLE_ADDRESSES, CURLOPTTYPE_LONG, 275),
2066 
2067   /* Specify which TLS 1.3 ciphers suites to use */
2068   CURLOPT(CURLOPT_TLS13_CIPHERS, CURLOPTTYPE_STRINGPOINT, 276),
2069   CURLOPT(CURLOPT_PROXY_TLS13_CIPHERS, CURLOPTTYPE_STRINGPOINT, 277),
2070 
2071   /* Disallow specifying username/login in URL. */
2072   CURLOPT(CURLOPT_DISALLOW_USERNAME_IN_URL, CURLOPTTYPE_LONG, 278),
2073 
2074   /* DNS-over-HTTPS URL */
2075   CURLOPT(CURLOPT_DOH_URL, CURLOPTTYPE_STRINGPOINT, 279),
2076 
2077   /* Preferred buffer size to use for uploads */
2078   CURLOPT(CURLOPT_UPLOAD_BUFFERSIZE, CURLOPTTYPE_LONG, 280),
2079 
2080   /* Time in ms between connection upkeep calls for long-lived connections. */
2081   CURLOPT(CURLOPT_UPKEEP_INTERVAL_MS, CURLOPTTYPE_LONG, 281),
2082 
2083   /* Specify URL using CURL URL API. */
2084   CURLOPT(CURLOPT_CURLU, CURLOPTTYPE_OBJECTPOINT, 282),
2085 
2086   /* add trailing data just after no more data is available */
2087   CURLOPT(CURLOPT_TRAILERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 283),
2088 
2089   /* pointer to be passed to HTTP_TRAILER_FUNCTION */
2090   CURLOPT(CURLOPT_TRAILERDATA, CURLOPTTYPE_CBPOINT, 284),
2091 
2092   /* set this to 1L to allow HTTP/0.9 responses or 0L to disallow */
2093   CURLOPT(CURLOPT_HTTP09_ALLOWED, CURLOPTTYPE_LONG, 285),
2094 
2095   /* alt-svc control bitmask */
2096   CURLOPT(CURLOPT_ALTSVC_CTRL, CURLOPTTYPE_LONG, 286),
2097 
2098   /* alt-svc cache file name to possibly read from/write to */
2099   CURLOPT(CURLOPT_ALTSVC, CURLOPTTYPE_STRINGPOINT, 287),
2100 
2101   /* maximum age (idle time) of a connection to consider it for reuse
2102    * (in seconds) */
2103   CURLOPT(CURLOPT_MAXAGE_CONN, CURLOPTTYPE_LONG, 288),
2104 
2105   /* SASL authorization identity */
2106   CURLOPT(CURLOPT_SASL_AUTHZID, CURLOPTTYPE_STRINGPOINT, 289),
2107 
2108   /* allow RCPT TO command to fail for some recipients */
2109   CURLOPT(CURLOPT_MAIL_RCPT_ALLOWFAILS, CURLOPTTYPE_LONG, 290),
2110 
2111   /* the private SSL-certificate as a "blob" */
2112   CURLOPT(CURLOPT_SSLCERT_BLOB, CURLOPTTYPE_BLOB, 291),
2113   CURLOPT(CURLOPT_SSLKEY_BLOB, CURLOPTTYPE_BLOB, 292),
2114   CURLOPT(CURLOPT_PROXY_SSLCERT_BLOB, CURLOPTTYPE_BLOB, 293),
2115   CURLOPT(CURLOPT_PROXY_SSLKEY_BLOB, CURLOPTTYPE_BLOB, 294),
2116   CURLOPT(CURLOPT_ISSUERCERT_BLOB, CURLOPTTYPE_BLOB, 295),
2117 
2118   /* Issuer certificate for proxy */
2119   CURLOPT(CURLOPT_PROXY_ISSUERCERT, CURLOPTTYPE_STRINGPOINT, 296),
2120   CURLOPT(CURLOPT_PROXY_ISSUERCERT_BLOB, CURLOPTTYPE_BLOB, 297),
2121 
2122   /* the EC curves requested by the TLS client (RFC 8422, 5.1);
2123    * OpenSSL support via 'set_groups'/'set_curves':
2124    * https://www.openssl.org/docs/manmaster/man3/SSL_CTX_set1_groups.html
2125    */
2126   CURLOPT(CURLOPT_SSL_EC_CURVES, CURLOPTTYPE_STRINGPOINT, 298),
2127 
2128   /* HSTS bitmask */
2129   CURLOPT(CURLOPT_HSTS_CTRL, CURLOPTTYPE_LONG, 299),
2130   /* HSTS file name */
2131   CURLOPT(CURLOPT_HSTS, CURLOPTTYPE_STRINGPOINT, 300),
2132 
2133   /* HSTS read callback */
2134   CURLOPT(CURLOPT_HSTSREADFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 301),
2135   CURLOPT(CURLOPT_HSTSREADDATA, CURLOPTTYPE_CBPOINT, 302),
2136 
2137   /* HSTS write callback */
2138   CURLOPT(CURLOPT_HSTSWRITEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 303),
2139   CURLOPT(CURLOPT_HSTSWRITEDATA, CURLOPTTYPE_CBPOINT, 304),
2140 
2141   /* Parameters for V4 signature */
2142   CURLOPT(CURLOPT_AWS_SIGV4, CURLOPTTYPE_STRINGPOINT, 305),
2143 
2144   /* Same as CURLOPT_SSL_VERIFYPEER but for DoH (DNS-over-HTTPS) servers. */
2145   CURLOPT(CURLOPT_DOH_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 306),
2146 
2147   /* Same as CURLOPT_SSL_VERIFYHOST but for DoH (DNS-over-HTTPS) servers. */
2148   CURLOPT(CURLOPT_DOH_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 307),
2149 
2150   /* Same as CURLOPT_SSL_VERIFYSTATUS but for DoH (DNS-over-HTTPS) servers. */
2151   CURLOPT(CURLOPT_DOH_SSL_VERIFYSTATUS, CURLOPTTYPE_LONG, 308),
2152 
2153   /* The CA certificates as "blob" used to validate the peer certificate
2154      this option is used only if SSL_VERIFYPEER is true */
2155   CURLOPT(CURLOPT_CAINFO_BLOB, CURLOPTTYPE_BLOB, 309),
2156 
2157   /* The CA certificates as "blob" used to validate the proxy certificate
2158      this option is used only if PROXY_SSL_VERIFYPEER is true */
2159   CURLOPT(CURLOPT_PROXY_CAINFO_BLOB, CURLOPTTYPE_BLOB, 310),
2160 
2161   /* used by scp/sftp to verify the host's public key */
2162   CURLOPT(CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256, CURLOPTTYPE_STRINGPOINT, 311),
2163 
2164   /* Function that will be called immediately before the initial request
2165      is made on a connection (after any protocol negotiation step).  */
2166   CURLOPT(CURLOPT_PREREQFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 312),
2167 
2168   /* Data passed to the CURLOPT_PREREQFUNCTION callback */
2169   CURLOPT(CURLOPT_PREREQDATA, CURLOPTTYPE_CBPOINT, 313),
2170 
2171   /* maximum age (since creation) of a connection to consider it for reuse
2172    * (in seconds) */
2173   CURLOPT(CURLOPT_MAXLIFETIME_CONN, CURLOPTTYPE_LONG, 314),
2174 
2175   /* Set MIME option flags. */
2176   CURLOPT(CURLOPT_MIME_OPTIONS, CURLOPTTYPE_LONG, 315),
2177 
2178   /* set the SSH host key callback, must point to a curl_sshkeycallback
2179      function */
2180   CURLOPT(CURLOPT_SSH_HOSTKEYFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 316),
2181 
2182   /* set the SSH host key callback custom pointer */
2183   CURLOPT(CURLOPT_SSH_HOSTKEYDATA, CURLOPTTYPE_CBPOINT, 317),
2184 
2185   /* specify which protocols that are allowed to be used for the transfer,
2186      which thus helps the app which takes URLs from users or other external
2187      inputs and want to restrict what protocol(s) to deal with. Defaults to
2188      all built-in protocols. */
2189   CURLOPT(CURLOPT_PROTOCOLS_STR, CURLOPTTYPE_STRINGPOINT, 318),
2190 
2191   /* specify which protocols that libcurl is allowed to follow directs to */
2192   CURLOPT(CURLOPT_REDIR_PROTOCOLS_STR, CURLOPTTYPE_STRINGPOINT, 319),
2193 
2194   /* websockets options */
2195   CURLOPT(CURLOPT_WS_OPTIONS, CURLOPTTYPE_LONG, 320),
2196 
2197   /* CA cache timeout */
2198   CURLOPT(CURLOPT_CA_CACHE_TIMEOUT, CURLOPTTYPE_LONG, 321),
2199 
2200   /* Can leak things, gonna exit() soon */
2201   CURLOPT(CURLOPT_QUICK_EXIT, CURLOPTTYPE_LONG, 322),
2202 
2203   /* set a specific client IP for HAProxy PROXY protocol header? */
2204   CURLOPT(CURLOPT_HAPROXY_CLIENT_IP, CURLOPTTYPE_STRINGPOINT, 323),
2205 
2206   /* millisecond version */
2207   CURLOPT(CURLOPT_SERVER_RESPONSE_TIMEOUT_MS, CURLOPTTYPE_LONG, 324),
2208 
2209   CURLOPT_LASTENTRY /* the last unused */
2210 } CURLoption;
2211 
2212 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
2213                           the obsolete stuff removed! */
2214 
2215 /* Backwards compatibility with older names */
2216 /* These are scheduled to disappear by 2011 */
2217 
2218 /* This was added in version 7.19.1 */
2219 #define CURLOPT_POST301 CURLOPT_POSTREDIR
2220 
2221 /* These are scheduled to disappear by 2009 */
2222 
2223 /* The following were added in 7.17.0 */
2224 #define CURLOPT_SSLKEYPASSWD CURLOPT_KEYPASSWD
2225 #define CURLOPT_FTPAPPEND CURLOPT_APPEND
2226 #define CURLOPT_FTPLISTONLY CURLOPT_DIRLISTONLY
2227 #define CURLOPT_FTP_SSL CURLOPT_USE_SSL
2228 
2229 /* The following were added earlier */
2230 
2231 #define CURLOPT_SSLCERTPASSWD CURLOPT_KEYPASSWD
2232 #define CURLOPT_KRB4LEVEL CURLOPT_KRBLEVEL
2233 
2234 /* */
2235 #define CURLOPT_FTP_RESPONSE_TIMEOUT CURLOPT_SERVER_RESPONSE_TIMEOUT
2236 
2237 /* Added in 8.2.0 */
2238 #define CURLOPT_MAIL_RCPT_ALLLOWFAILS CURLOPT_MAIL_RCPT_ALLOWFAILS
2239 
2240 #else
2241 /* This is set if CURL_NO_OLDIES is defined at compile-time */
2242 #undef CURLOPT_DNS_USE_GLOBAL_CACHE /* soon obsolete */
2243 #endif
2244 
2245 
2246   /* Below here follows defines for the CURLOPT_IPRESOLVE option. If a host
2247      name resolves addresses using more than one IP protocol version, this
2248      option might be handy to force libcurl to use a specific IP version. */
2249 #define CURL_IPRESOLVE_WHATEVER 0 /* default, uses addresses to all IP
2250                                      versions that your system allows */
2251 #define CURL_IPRESOLVE_V4       1 /* uses only IPv4 addresses/connections */
2252 #define CURL_IPRESOLVE_V6       2 /* uses only IPv6 addresses/connections */
2253 
2254   /* Convenient "aliases" */
2255 #define CURLOPT_RTSPHEADER CURLOPT_HTTPHEADER
2256 
2257   /* These enums are for use with the CURLOPT_HTTP_VERSION option. */
2258 enum {
2259   CURL_HTTP_VERSION_NONE, /* setting this means we don't care, and that we'd
2260                              like the library to choose the best possible
2261                              for us! */
2262   CURL_HTTP_VERSION_1_0,  /* please use HTTP 1.0 in the request */
2263   CURL_HTTP_VERSION_1_1,  /* please use HTTP 1.1 in the request */
2264   CURL_HTTP_VERSION_2_0,  /* please use HTTP 2 in the request */
2265   CURL_HTTP_VERSION_2TLS, /* use version 2 for HTTPS, version 1.1 for HTTP */
2266   CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE,  /* please use HTTP 2 without HTTP/1.1
2267                                            Upgrade */
2268   CURL_HTTP_VERSION_3 = 30, /* Use HTTP/3, fallback to HTTP/2 or HTTP/1 if
2269                                needed. For HTTPS only. For HTTP, this option
2270                                makes libcurl return error. */
2271   CURL_HTTP_VERSION_3ONLY = 31, /* Use HTTP/3 without fallback. For HTTPS
2272                                    only. For HTTP, this makes libcurl
2273                                    return error. */
2274 
2275   CURL_HTTP_VERSION_LAST /* *ILLEGAL* http version */
2276 };
2277 
2278 /* Convenience definition simple because the name of the version is HTTP/2 and
2279    not 2.0. The 2_0 version of the enum name was set while the version was
2280    still planned to be 2.0 and we stick to it for compatibility. */
2281 #define CURL_HTTP_VERSION_2 CURL_HTTP_VERSION_2_0
2282 
2283 /*
2284  * Public API enums for RTSP requests
2285  */
2286 enum {
2287     CURL_RTSPREQ_NONE, /* first in list */
2288     CURL_RTSPREQ_OPTIONS,
2289     CURL_RTSPREQ_DESCRIBE,
2290     CURL_RTSPREQ_ANNOUNCE,
2291     CURL_RTSPREQ_SETUP,
2292     CURL_RTSPREQ_PLAY,
2293     CURL_RTSPREQ_PAUSE,
2294     CURL_RTSPREQ_TEARDOWN,
2295     CURL_RTSPREQ_GET_PARAMETER,
2296     CURL_RTSPREQ_SET_PARAMETER,
2297     CURL_RTSPREQ_RECORD,
2298     CURL_RTSPREQ_RECEIVE,
2299     CURL_RTSPREQ_LAST /* last in list */
2300 };
2301 
2302   /* These enums are for use with the CURLOPT_NETRC option. */
2303 enum CURL_NETRC_OPTION {
2304   CURL_NETRC_IGNORED,     /* The .netrc will never be read.
2305                            * This is the default. */
2306   CURL_NETRC_OPTIONAL,    /* A user:password in the URL will be preferred
2307                            * to one in the .netrc. */
2308   CURL_NETRC_REQUIRED,    /* A user:password in the URL will be ignored.
2309                            * Unless one is set programmatically, the .netrc
2310                            * will be queried. */
2311   CURL_NETRC_LAST
2312 };
2313 
2314 enum {
2315   CURL_SSLVERSION_DEFAULT,
2316   CURL_SSLVERSION_TLSv1, /* TLS 1.x */
2317   CURL_SSLVERSION_SSLv2,
2318   CURL_SSLVERSION_SSLv3,
2319   CURL_SSLVERSION_TLSv1_0,
2320   CURL_SSLVERSION_TLSv1_1,
2321   CURL_SSLVERSION_TLSv1_2,
2322   CURL_SSLVERSION_TLSv1_3,
2323 
2324   CURL_SSLVERSION_LAST /* never use, keep last */
2325 };
2326 
2327 enum {
2328   CURL_SSLVERSION_MAX_NONE =     0,
2329   CURL_SSLVERSION_MAX_DEFAULT =  (CURL_SSLVERSION_TLSv1   << 16),
2330   CURL_SSLVERSION_MAX_TLSv1_0 =  (CURL_SSLVERSION_TLSv1_0 << 16),
2331   CURL_SSLVERSION_MAX_TLSv1_1 =  (CURL_SSLVERSION_TLSv1_1 << 16),
2332   CURL_SSLVERSION_MAX_TLSv1_2 =  (CURL_SSLVERSION_TLSv1_2 << 16),
2333   CURL_SSLVERSION_MAX_TLSv1_3 =  (CURL_SSLVERSION_TLSv1_3 << 16),
2334 
2335   /* never use, keep last */
2336   CURL_SSLVERSION_MAX_LAST =     (CURL_SSLVERSION_LAST    << 16)
2337 };
2338 
2339 enum CURL_TLSAUTH {
2340   CURL_TLSAUTH_NONE,
2341   CURL_TLSAUTH_SRP,
2342   CURL_TLSAUTH_LAST /* never use, keep last */
2343 };
2344 
2345 /* symbols to use with CURLOPT_POSTREDIR.
2346    CURL_REDIR_POST_301, CURL_REDIR_POST_302 and CURL_REDIR_POST_303
2347    can be bitwise ORed so that CURL_REDIR_POST_301 | CURL_REDIR_POST_302
2348    | CURL_REDIR_POST_303 == CURL_REDIR_POST_ALL */
2349 
2350 #define CURL_REDIR_GET_ALL  0
2351 #define CURL_REDIR_POST_301 1
2352 #define CURL_REDIR_POST_302 2
2353 #define CURL_REDIR_POST_303 4
2354 #define CURL_REDIR_POST_ALL \
2355     (CURL_REDIR_POST_301|CURL_REDIR_POST_302|CURL_REDIR_POST_303)
2356 
2357 typedef enum {
2358   CURL_TIMECOND_NONE,
2359 
2360   CURL_TIMECOND_IFMODSINCE,
2361   CURL_TIMECOND_IFUNMODSINCE,
2362   CURL_TIMECOND_LASTMOD,
2363 
2364   CURL_TIMECOND_LAST
2365 } curl_TimeCond;
2366 
2367 /* Special size_t value signaling a null-terminated string. */
2368 #define CURL_ZERO_TERMINATED ((size_t) -1)
2369 
2370 /* curl_strequal() and curl_strnequal() are subject for removal in a future
2371    release */
2372 CURL_EXTERN int curl_strequal(const char *s1, const char *s2);
2373 CURL_EXTERN int curl_strnequal(const char *s1, const char *s2, size_t n);
2374 
2375 /* Mime/form handling support. */
2376 typedef struct curl_mime      curl_mime;      /* Mime context. */
2377 typedef struct curl_mimepart  curl_mimepart;  /* Mime part context. */
2378 
2379 /* CURLMIMEOPT_ defines are for the CURLOPT_MIME_OPTIONS option. */
2380 #define CURLMIMEOPT_FORMESCAPE  (1<<0) /* Use backslash-escaping for forms. */
2381 
2382 /*
2383  * NAME curl_mime_init()
2384  *
2385  * DESCRIPTION
2386  *
2387  * Create a mime context and return its handle. The easy parameter is the
2388  * target handle.
2389  */
2390 CURL_EXTERN curl_mime *curl_mime_init(CURL *easy);
2391 
2392 /*
2393  * NAME curl_mime_free()
2394  *
2395  * DESCRIPTION
2396  *
2397  * release a mime handle and its substructures.
2398  */
2399 CURL_EXTERN void curl_mime_free(curl_mime *mime);
2400 
2401 /*
2402  * NAME curl_mime_addpart()
2403  *
2404  * DESCRIPTION
2405  *
2406  * Append a new empty part to the given mime context and return a handle to
2407  * the created part.
2408  */
2409 CURL_EXTERN curl_mimepart *curl_mime_addpart(curl_mime *mime);
2410 
2411 /*
2412  * NAME curl_mime_name()
2413  *
2414  * DESCRIPTION
2415  *
2416  * Set mime/form part name.
2417  */
2418 CURL_EXTERN CURLcode curl_mime_name(curl_mimepart *part, const char *name);
2419 
2420 /*
2421  * NAME curl_mime_filename()
2422  *
2423  * DESCRIPTION
2424  *
2425  * Set mime part remote file name.
2426  */
2427 CURL_EXTERN CURLcode curl_mime_filename(curl_mimepart *part,
2428                                         const char *filename);
2429 
2430 /*
2431  * NAME curl_mime_type()
2432  *
2433  * DESCRIPTION
2434  *
2435  * Set mime part type.
2436  */
2437 CURL_EXTERN CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype);
2438 
2439 /*
2440  * NAME curl_mime_encoder()
2441  *
2442  * DESCRIPTION
2443  *
2444  * Set mime data transfer encoder.
2445  */
2446 CURL_EXTERN CURLcode curl_mime_encoder(curl_mimepart *part,
2447                                        const char *encoding);
2448 
2449 /*
2450  * NAME curl_mime_data()
2451  *
2452  * DESCRIPTION
2453  *
2454  * Set mime part data source from memory data,
2455  */
2456 CURL_EXTERN CURLcode curl_mime_data(curl_mimepart *part,
2457                                     const char *data, size_t datasize);
2458 
2459 /*
2460  * NAME curl_mime_filedata()
2461  *
2462  * DESCRIPTION
2463  *
2464  * Set mime part data source from named file.
2465  */
2466 CURL_EXTERN CURLcode curl_mime_filedata(curl_mimepart *part,
2467                                         const char *filename);
2468 
2469 /*
2470  * NAME curl_mime_data_cb()
2471  *
2472  * DESCRIPTION
2473  *
2474  * Set mime part data source from callback function.
2475  */
2476 CURL_EXTERN CURLcode curl_mime_data_cb(curl_mimepart *part,
2477                                        curl_off_t datasize,
2478                                        curl_read_callback readfunc,
2479                                        curl_seek_callback seekfunc,
2480                                        curl_free_callback freefunc,
2481                                        void *arg);
2482 
2483 /*
2484  * NAME curl_mime_subparts()
2485  *
2486  * DESCRIPTION
2487  *
2488  * Set mime part data source from subparts.
2489  */
2490 CURL_EXTERN CURLcode curl_mime_subparts(curl_mimepart *part,
2491                                         curl_mime *subparts);
2492 /*
2493  * NAME curl_mime_headers()
2494  *
2495  * DESCRIPTION
2496  *
2497  * Set mime part headers.
2498  */
2499 CURL_EXTERN CURLcode curl_mime_headers(curl_mimepart *part,
2500                                        struct curl_slist *headers,
2501                                        int take_ownership);
2502 
2503 typedef enum {
2504   /********* the first one is unused ************/
2505   CURLFORM_NOTHING         CURL_DEPRECATED(7.56.0, ""),
2506   CURLFORM_COPYNAME        CURL_DEPRECATED(7.56.0, "Use curl_mime_name()"),
2507   CURLFORM_PTRNAME         CURL_DEPRECATED(7.56.0, "Use curl_mime_name()"),
2508   CURLFORM_NAMELENGTH      CURL_DEPRECATED(7.56.0, ""),
2509   CURLFORM_COPYCONTENTS    CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
2510   CURLFORM_PTRCONTENTS     CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
2511   CURLFORM_CONTENTSLENGTH  CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
2512   CURLFORM_FILECONTENT     CURL_DEPRECATED(7.56.0, "Use curl_mime_data_cb()"),
2513   CURLFORM_ARRAY           CURL_DEPRECATED(7.56.0, ""),
2514   CURLFORM_OBSOLETE,
2515   CURLFORM_FILE            CURL_DEPRECATED(7.56.0, "Use curl_mime_filedata()"),
2516 
2517   CURLFORM_BUFFER          CURL_DEPRECATED(7.56.0, "Use curl_mime_filename()"),
2518   CURLFORM_BUFFERPTR       CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
2519   CURLFORM_BUFFERLENGTH    CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
2520 
2521   CURLFORM_CONTENTTYPE     CURL_DEPRECATED(7.56.0, "Use curl_mime_type()"),
2522   CURLFORM_CONTENTHEADER   CURL_DEPRECATED(7.56.0, "Use curl_mime_headers()"),
2523   CURLFORM_FILENAME        CURL_DEPRECATED(7.56.0, "Use curl_mime_filename()"),
2524   CURLFORM_END,
2525   CURLFORM_OBSOLETE2,
2526 
2527   CURLFORM_STREAM          CURL_DEPRECATED(7.56.0, "Use curl_mime_data_cb()"),
2528   CURLFORM_CONTENTLEN  /* added in 7.46.0, provide a curl_off_t length */
2529                            CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
2530 
2531   CURLFORM_LASTENTRY /* the last unused */
2532 } CURLformoption;
2533 
2534 /* structure to be used as parameter for CURLFORM_ARRAY */
2535 struct curl_forms {
2536   CURLformoption option;
2537   const char     *value;
2538 };
2539 
2540 /* use this for multipart formpost building */
2541 /* Returns code for curl_formadd()
2542  *
2543  * Returns:
2544  * CURL_FORMADD_OK             on success
2545  * CURL_FORMADD_MEMORY         if the FormInfo allocation fails
2546  * CURL_FORMADD_OPTION_TWICE   if one option is given twice for one Form
2547  * CURL_FORMADD_NULL           if a null pointer was given for a char
2548  * CURL_FORMADD_MEMORY         if the allocation of a FormInfo struct failed
2549  * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
2550  * CURL_FORMADD_INCOMPLETE     if the some FormInfo is not complete (or error)
2551  * CURL_FORMADD_MEMORY         if a curl_httppost struct cannot be allocated
2552  * CURL_FORMADD_MEMORY         if some allocation for string copying failed.
2553  * CURL_FORMADD_ILLEGAL_ARRAY  if an illegal option is used in an array
2554  *
2555  ***************************************************************************/
2556 typedef enum {
2557   CURL_FORMADD_OK             CURL_DEPRECATED(7.56.0, ""), /* 1st, no error */
2558 
2559   CURL_FORMADD_MEMORY         CURL_DEPRECATED(7.56.0, ""),
2560   CURL_FORMADD_OPTION_TWICE   CURL_DEPRECATED(7.56.0, ""),
2561   CURL_FORMADD_NULL           CURL_DEPRECATED(7.56.0, ""),
2562   CURL_FORMADD_UNKNOWN_OPTION CURL_DEPRECATED(7.56.0, ""),
2563   CURL_FORMADD_INCOMPLETE     CURL_DEPRECATED(7.56.0, ""),
2564   CURL_FORMADD_ILLEGAL_ARRAY  CURL_DEPRECATED(7.56.0, ""),
2565   /* libcurl was built with form api disabled */
2566   CURL_FORMADD_DISABLED       CURL_DEPRECATED(7.56.0, ""),
2567 
2568   CURL_FORMADD_LAST /* last */
2569 } CURLFORMcode;
2570 
2571 /*
2572  * NAME curl_formadd()
2573  *
2574  * DESCRIPTION
2575  *
2576  * Pretty advanced function for building multi-part formposts. Each invoke
2577  * adds one part that together construct a full post. Then use
2578  * CURLOPT_HTTPPOST to send it off to libcurl.
2579  */
2580 CURL_EXTERN CURLFORMcode CURL_DEPRECATED(7.56.0, "Use curl_mime_init()")
2581 curl_formadd(struct curl_httppost **httppost,
2582              struct curl_httppost **last_post,
2583              ...);
2584 
2585 /*
2586  * callback function for curl_formget()
2587  * The void *arg pointer will be the one passed as second argument to
2588  *   curl_formget().
2589  * The character buffer passed to it must not be freed.
2590  * Should return the buffer length passed to it as the argument "len" on
2591  *   success.
2592  */
2593 typedef size_t (*curl_formget_callback)(void *arg, const char *buf,
2594                                         size_t len);
2595 
2596 /*
2597  * NAME curl_formget()
2598  *
2599  * DESCRIPTION
2600  *
2601  * Serialize a curl_httppost struct built with curl_formadd().
2602  * Accepts a void pointer as second argument which will be passed to
2603  * the curl_formget_callback function.
2604  * Returns 0 on success.
2605  */
2606 CURL_EXTERN int CURL_DEPRECATED(7.56.0, "")
2607 curl_formget(struct curl_httppost *form, void *arg,
2608              curl_formget_callback append);
2609 /*
2610  * NAME curl_formfree()
2611  *
2612  * DESCRIPTION
2613  *
2614  * Free a multipart formpost previously built with curl_formadd().
2615  */
2616 CURL_EXTERN void CURL_DEPRECATED(7.56.0, "Use curl_mime_free()")
2617 curl_formfree(struct curl_httppost *form);
2618 
2619 /*
2620  * NAME curl_getenv()
2621  *
2622  * DESCRIPTION
2623  *
2624  * Returns a malloc()'ed string that MUST be curl_free()ed after usage is
2625  * complete. DEPRECATED - see lib/README.curlx
2626  */
2627 CURL_EXTERN char *curl_getenv(const char *variable);
2628 
2629 /*
2630  * NAME curl_version()
2631  *
2632  * DESCRIPTION
2633  *
2634  * Returns a static ascii string of the libcurl version.
2635  */
2636 CURL_EXTERN char *curl_version(void);
2637 
2638 /*
2639  * NAME curl_easy_escape()
2640  *
2641  * DESCRIPTION
2642  *
2643  * Escapes URL strings (converts all letters consider illegal in URLs to their
2644  * %XX versions). This function returns a new allocated string or NULL if an
2645  * error occurred.
2646  */
2647 CURL_EXTERN char *curl_easy_escape(CURL *handle,
2648                                    const char *string,
2649                                    int length);
2650 
2651 /* the previous version: */
2652 CURL_EXTERN char *curl_escape(const char *string,
2653                               int length);
2654 
2655 
2656 /*
2657  * NAME curl_easy_unescape()
2658  *
2659  * DESCRIPTION
2660  *
2661  * Unescapes URL encoding in strings (converts all %XX codes to their 8bit
2662  * versions). This function returns a new allocated string or NULL if an error
2663  * occurred.
2664  * Conversion Note: On non-ASCII platforms the ASCII %XX codes are
2665  * converted into the host encoding.
2666  */
2667 CURL_EXTERN char *curl_easy_unescape(CURL *handle,
2668                                      const char *string,
2669                                      int length,
2670                                      int *outlength);
2671 
2672 /* the previous version */
2673 CURL_EXTERN char *curl_unescape(const char *string,
2674                                 int length);
2675 
2676 /*
2677  * NAME curl_free()
2678  *
2679  * DESCRIPTION
2680  *
2681  * Provided for de-allocation in the same translation unit that did the
2682  * allocation. Added in libcurl 7.10
2683  */
2684 CURL_EXTERN void curl_free(void *p);
2685 
2686 /*
2687  * NAME curl_global_init()
2688  *
2689  * DESCRIPTION
2690  *
2691  * curl_global_init() should be invoked exactly once for each application that
2692  * uses libcurl and before any call of other libcurl functions.
2693 
2694  * This function is thread-safe if CURL_VERSION_THREADSAFE is set in the
2695  * curl_version_info_data.features flag (fetch by curl_version_info()).
2696 
2697  */
2698 CURL_EXTERN CURLcode curl_global_init(long flags);
2699 
2700 /*
2701  * NAME curl_global_init_mem()
2702  *
2703  * DESCRIPTION
2704  *
2705  * curl_global_init() or curl_global_init_mem() should be invoked exactly once
2706  * for each application that uses libcurl.  This function can be used to
2707  * initialize libcurl and set user defined memory management callback
2708  * functions.  Users can implement memory management routines to check for
2709  * memory leaks, check for mis-use of the curl library etc.  User registered
2710  * callback routines will be invoked by this library instead of the system
2711  * memory management routines like malloc, free etc.
2712  */
2713 CURL_EXTERN CURLcode curl_global_init_mem(long flags,
2714                                           curl_malloc_callback m,
2715                                           curl_free_callback f,
2716                                           curl_realloc_callback r,
2717                                           curl_strdup_callback s,
2718                                           curl_calloc_callback c);
2719 
2720 /*
2721  * NAME curl_global_cleanup()
2722  *
2723  * DESCRIPTION
2724  *
2725  * curl_global_cleanup() should be invoked exactly once for each application
2726  * that uses libcurl
2727  */
2728 CURL_EXTERN void curl_global_cleanup(void);
2729 
2730 /*
2731  * NAME curl_global_trace()
2732  *
2733  * DESCRIPTION
2734  *
2735  * curl_global_trace() can be invoked at application start to
2736  * configure which components in curl should participate in tracing.
2737 
2738  * This function is thread-safe if CURL_VERSION_THREADSAFE is set in the
2739  * curl_version_info_data.features flag (fetch by curl_version_info()).
2740 
2741  */
2742 CURL_EXTERN CURLcode curl_global_trace(const char *config);
2743 
2744 /* linked-list structure for the CURLOPT_QUOTE option (and other) */
2745 struct curl_slist {
2746   char *data;
2747   struct curl_slist *next;
2748 };
2749 
2750 /*
2751  * NAME curl_global_sslset()
2752  *
2753  * DESCRIPTION
2754  *
2755  * When built with multiple SSL backends, curl_global_sslset() allows to
2756  * choose one. This function can only be called once, and it must be called
2757  * *before* curl_global_init().
2758  *
2759  * The backend can be identified by the id (e.g. CURLSSLBACKEND_OPENSSL). The
2760  * backend can also be specified via the name parameter (passing -1 as id).
2761  * If both id and name are specified, the name will be ignored. If neither id
2762  * nor name are specified, the function will fail with
2763  * CURLSSLSET_UNKNOWN_BACKEND and set the "avail" pointer to the
2764  * NULL-terminated list of available backends.
2765  *
2766  * Upon success, the function returns CURLSSLSET_OK.
2767  *
2768  * If the specified SSL backend is not available, the function returns
2769  * CURLSSLSET_UNKNOWN_BACKEND and sets the "avail" pointer to a NULL-terminated
2770  * list of available SSL backends.
2771  *
2772  * The SSL backend can be set only once. If it has already been set, a
2773  * subsequent attempt to change it will result in a CURLSSLSET_TOO_LATE.
2774  */
2775 
2776 struct curl_ssl_backend {
2777   curl_sslbackend id;
2778   const char *name;
2779 };
2780 typedef struct curl_ssl_backend curl_ssl_backend;
2781 
2782 typedef enum {
2783   CURLSSLSET_OK = 0,
2784   CURLSSLSET_UNKNOWN_BACKEND,
2785   CURLSSLSET_TOO_LATE,
2786   CURLSSLSET_NO_BACKENDS /* libcurl was built without any SSL support */
2787 } CURLsslset;
2788 
2789 CURL_EXTERN CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
2790                                           const curl_ssl_backend ***avail);
2791 
2792 /*
2793  * NAME curl_slist_append()
2794  *
2795  * DESCRIPTION
2796  *
2797  * Appends a string to a linked list. If no list exists, it will be created
2798  * first. Returns the new list, after appending.
2799  */
2800 CURL_EXTERN struct curl_slist *curl_slist_append(struct curl_slist *list,
2801                                                  const char *data);
2802 
2803 /*
2804  * NAME curl_slist_free_all()
2805  *
2806  * DESCRIPTION
2807  *
2808  * free a previously built curl_slist.
2809  */
2810 CURL_EXTERN void curl_slist_free_all(struct curl_slist *list);
2811 
2812 /*
2813  * NAME curl_getdate()
2814  *
2815  * DESCRIPTION
2816  *
2817  * Returns the time, in seconds since 1 Jan 1970 of the time string given in
2818  * the first argument. The time argument in the second parameter is unused
2819  * and should be set to NULL.
2820  */
2821 CURL_EXTERN time_t curl_getdate(const char *p, const time_t *unused);
2822 
2823 /* info about the certificate chain, for SSL backends that support it. Asked
2824    for with CURLOPT_CERTINFO / CURLINFO_CERTINFO */
2825 struct curl_certinfo {
2826   int num_of_certs;             /* number of certificates with information */
2827   struct curl_slist **certinfo; /* for each index in this array, there's a
2828                                    linked list with textual information for a
2829                                    certificate in the format "name:content".
2830                                    eg "Subject:foo", "Issuer:bar", etc. */
2831 };
2832 
2833 /* Information about the SSL library used and the respective internal SSL
2834    handle, which can be used to obtain further information regarding the
2835    connection. Asked for with CURLINFO_TLS_SSL_PTR or CURLINFO_TLS_SESSION. */
2836 struct curl_tlssessioninfo {
2837   curl_sslbackend backend;
2838   void *internals;
2839 };
2840 
2841 #define CURLINFO_STRING   0x100000
2842 #define CURLINFO_LONG     0x200000
2843 #define CURLINFO_DOUBLE   0x300000
2844 #define CURLINFO_SLIST    0x400000
2845 #define CURLINFO_PTR      0x400000 /* same as SLIST */
2846 #define CURLINFO_SOCKET   0x500000
2847 #define CURLINFO_OFF_T    0x600000
2848 #define CURLINFO_MASK     0x0fffff
2849 #define CURLINFO_TYPEMASK 0xf00000
2850 
2851 typedef enum {
2852   CURLINFO_NONE, /* first, never use this */
2853   CURLINFO_EFFECTIVE_URL    = CURLINFO_STRING + 1,
2854   CURLINFO_RESPONSE_CODE    = CURLINFO_LONG   + 2,
2855   CURLINFO_TOTAL_TIME       = CURLINFO_DOUBLE + 3,
2856   CURLINFO_NAMELOOKUP_TIME  = CURLINFO_DOUBLE + 4,
2857   CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
2858   CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
2859   CURLINFO_SIZE_UPLOAD CURL_DEPRECATED(7.55.0, "Use CURLINFO_SIZE_UPLOAD_T")
2860                             = CURLINFO_DOUBLE + 7,
2861   CURLINFO_SIZE_UPLOAD_T    = CURLINFO_OFF_T  + 7,
2862   CURLINFO_SIZE_DOWNLOAD
2863                        CURL_DEPRECATED(7.55.0, "Use CURLINFO_SIZE_DOWNLOAD_T")
2864                             = CURLINFO_DOUBLE + 8,
2865   CURLINFO_SIZE_DOWNLOAD_T  = CURLINFO_OFF_T  + 8,
2866   CURLINFO_SPEED_DOWNLOAD
2867                        CURL_DEPRECATED(7.55.0, "Use CURLINFO_SPEED_DOWNLOAD_T")
2868                             = CURLINFO_DOUBLE + 9,
2869   CURLINFO_SPEED_DOWNLOAD_T = CURLINFO_OFF_T  + 9,
2870   CURLINFO_SPEED_UPLOAD
2871                        CURL_DEPRECATED(7.55.0, "Use CURLINFO_SPEED_UPLOAD_T")
2872                             = CURLINFO_DOUBLE + 10,
2873   CURLINFO_SPEED_UPLOAD_T   = CURLINFO_OFF_T  + 10,
2874   CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
2875   CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
2876   CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
2877   CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
2878   CURLINFO_FILETIME_T       = CURLINFO_OFF_T  + 14,
2879   CURLINFO_CONTENT_LENGTH_DOWNLOAD
2880                        CURL_DEPRECATED(7.55.0,
2881                                       "Use CURLINFO_CONTENT_LENGTH_DOWNLOAD_T")
2882                             = CURLINFO_DOUBLE + 15,
2883   CURLINFO_CONTENT_LENGTH_DOWNLOAD_T = CURLINFO_OFF_T  + 15,
2884   CURLINFO_CONTENT_LENGTH_UPLOAD
2885                        CURL_DEPRECATED(7.55.0,
2886                                        "Use CURLINFO_CONTENT_LENGTH_UPLOAD_T")
2887                             = CURLINFO_DOUBLE + 16,
2888   CURLINFO_CONTENT_LENGTH_UPLOAD_T   = CURLINFO_OFF_T  + 16,
2889   CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
2890   CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
2891   CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
2892   CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
2893   CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
2894   CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
2895   CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
2896   CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
2897   CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
2898   CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
2899   CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
2900   CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
2901   CURLINFO_LASTSOCKET  CURL_DEPRECATED(7.45.0, "Use CURLINFO_ACTIVESOCKET")
2902                             = CURLINFO_LONG   + 29,
2903   CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
2904   CURLINFO_REDIRECT_URL     = CURLINFO_STRING + 31,
2905   CURLINFO_PRIMARY_IP       = CURLINFO_STRING + 32,
2906   CURLINFO_APPCONNECT_TIME  = CURLINFO_DOUBLE + 33,
2907   CURLINFO_CERTINFO         = CURLINFO_PTR    + 34,
2908   CURLINFO_CONDITION_UNMET  = CURLINFO_LONG   + 35,
2909   CURLINFO_RTSP_SESSION_ID  = CURLINFO_STRING + 36,
2910   CURLINFO_RTSP_CLIENT_CSEQ = CURLINFO_LONG   + 37,
2911   CURLINFO_RTSP_SERVER_CSEQ = CURLINFO_LONG   + 38,
2912   CURLINFO_RTSP_CSEQ_RECV   = CURLINFO_LONG   + 39,
2913   CURLINFO_PRIMARY_PORT     = CURLINFO_LONG   + 40,
2914   CURLINFO_LOCAL_IP         = CURLINFO_STRING + 41,
2915   CURLINFO_LOCAL_PORT       = CURLINFO_LONG   + 42,
2916   CURLINFO_TLS_SESSION CURL_DEPRECATED(7.48.0, "Use CURLINFO_TLS_SSL_PTR")
2917                             = CURLINFO_PTR    + 43,
2918   CURLINFO_ACTIVESOCKET     = CURLINFO_SOCKET + 44,
2919   CURLINFO_TLS_SSL_PTR      = CURLINFO_PTR    + 45,
2920   CURLINFO_HTTP_VERSION     = CURLINFO_LONG   + 46,
2921   CURLINFO_PROXY_SSL_VERIFYRESULT = CURLINFO_LONG + 47,
2922   CURLINFO_PROTOCOL    CURL_DEPRECATED(7.85.0, "Use CURLINFO_SCHEME")
2923                             = CURLINFO_LONG   + 48,
2924   CURLINFO_SCHEME           = CURLINFO_STRING + 49,
2925   CURLINFO_TOTAL_TIME_T     = CURLINFO_OFF_T + 50,
2926   CURLINFO_NAMELOOKUP_TIME_T = CURLINFO_OFF_T + 51,
2927   CURLINFO_CONNECT_TIME_T   = CURLINFO_OFF_T + 52,
2928   CURLINFO_PRETRANSFER_TIME_T = CURLINFO_OFF_T + 53,
2929   CURLINFO_STARTTRANSFER_TIME_T = CURLINFO_OFF_T + 54,
2930   CURLINFO_REDIRECT_TIME_T  = CURLINFO_OFF_T + 55,
2931   CURLINFO_APPCONNECT_TIME_T = CURLINFO_OFF_T + 56,
2932   CURLINFO_RETRY_AFTER      = CURLINFO_OFF_T + 57,
2933   CURLINFO_EFFECTIVE_METHOD = CURLINFO_STRING + 58,
2934   CURLINFO_PROXY_ERROR      = CURLINFO_LONG + 59,
2935   CURLINFO_REFERER          = CURLINFO_STRING + 60,
2936   CURLINFO_CAINFO           = CURLINFO_STRING + 61,
2937   CURLINFO_CAPATH           = CURLINFO_STRING + 62,
2938   CURLINFO_XFER_ID          = CURLINFO_OFF_T + 63,
2939   CURLINFO_CONN_ID          = CURLINFO_OFF_T + 64,
2940   CURLINFO_QUEUE_TIME_T     = CURLINFO_OFF_T + 65,
2941   CURLINFO_LASTONE          = 65
2942 } CURLINFO;
2943 
2944 /* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
2945    CURLINFO_HTTP_CODE */
2946 #define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE
2947 
2948 typedef enum {
2949   CURLCLOSEPOLICY_NONE, /* first, never use this */
2950 
2951   CURLCLOSEPOLICY_OLDEST,
2952   CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
2953   CURLCLOSEPOLICY_LEAST_TRAFFIC,
2954   CURLCLOSEPOLICY_SLOWEST,
2955   CURLCLOSEPOLICY_CALLBACK,
2956 
2957   CURLCLOSEPOLICY_LAST /* last, never use this */
2958 } curl_closepolicy;
2959 
2960 #define CURL_GLOBAL_SSL (1<<0) /* no purpose since 7.57.0 */
2961 #define CURL_GLOBAL_WIN32 (1<<1)
2962 #define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
2963 #define CURL_GLOBAL_NOTHING 0
2964 #define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL
2965 #define CURL_GLOBAL_ACK_EINTR (1<<2)
2966 
2967 
2968 /*****************************************************************************
2969  * Setup defines, protos etc for the sharing stuff.
2970  */
2971 
2972 /* Different data locks for a single share */
2973 typedef enum {
2974   CURL_LOCK_DATA_NONE = 0,
2975   /*  CURL_LOCK_DATA_SHARE is used internally to say that
2976    *  the locking is just made to change the internal state of the share
2977    *  itself.
2978    */
2979   CURL_LOCK_DATA_SHARE,
2980   CURL_LOCK_DATA_COOKIE,
2981   CURL_LOCK_DATA_DNS,
2982   CURL_LOCK_DATA_SSL_SESSION,
2983   CURL_LOCK_DATA_CONNECT,
2984   CURL_LOCK_DATA_PSL,
2985   CURL_LOCK_DATA_HSTS,
2986   CURL_LOCK_DATA_LAST
2987 } curl_lock_data;
2988 
2989 /* Different lock access types */
2990 typedef enum {
2991   CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
2992   CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
2993   CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
2994   CURL_LOCK_ACCESS_LAST        /* never use */
2995 } curl_lock_access;
2996 
2997 typedef void (*curl_lock_function)(CURL *handle,
2998                                    curl_lock_data data,
2999                                    curl_lock_access locktype,
3000                                    void *userptr);
3001 typedef void (*curl_unlock_function)(CURL *handle,
3002                                      curl_lock_data data,
3003                                      void *userptr);
3004 
3005 
3006 typedef enum {
3007   CURLSHE_OK,  /* all is fine */
3008   CURLSHE_BAD_OPTION, /* 1 */
3009   CURLSHE_IN_USE,     /* 2 */
3010   CURLSHE_INVALID,    /* 3 */
3011   CURLSHE_NOMEM,      /* 4 out of memory */
3012   CURLSHE_NOT_BUILT_IN, /* 5 feature not present in lib */
3013   CURLSHE_LAST        /* never use */
3014 } CURLSHcode;
3015 
3016 typedef enum {
3017   CURLSHOPT_NONE,  /* don't use */
3018   CURLSHOPT_SHARE,   /* specify a data type to share */
3019   CURLSHOPT_UNSHARE, /* specify which data type to stop sharing */
3020   CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
3021   CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
3022   CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
3023                            callback functions */
3024   CURLSHOPT_LAST  /* never use */
3025 } CURLSHoption;
3026 
3027 CURL_EXTERN CURLSH *curl_share_init(void);
3028 CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *share, CURLSHoption option,
3029                                          ...);
3030 CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *share);
3031 
3032 /****************************************************************************
3033  * Structures for querying information about the curl library at runtime.
3034  */
3035 
3036 typedef enum {
3037   CURLVERSION_FIRST,
3038   CURLVERSION_SECOND,
3039   CURLVERSION_THIRD,
3040   CURLVERSION_FOURTH,
3041   CURLVERSION_FIFTH,
3042   CURLVERSION_SIXTH,
3043   CURLVERSION_SEVENTH,
3044   CURLVERSION_EIGHTH,
3045   CURLVERSION_NINTH,
3046   CURLVERSION_TENTH,
3047   CURLVERSION_ELEVENTH,
3048   CURLVERSION_LAST /* never actually use this */
3049 } CURLversion;
3050 
3051 /* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
3052    basically all programs ever that want to get version information. It is
3053    meant to be a built-in version number for what kind of struct the caller
3054    expects. If the struct ever changes, we redefine the NOW to another enum
3055    from above. */
3056 #define CURLVERSION_NOW CURLVERSION_ELEVENTH
3057 
3058 struct curl_version_info_data {
3059   CURLversion age;          /* age of the returned struct */
3060   const char *version;      /* LIBCURL_VERSION */
3061   unsigned int version_num; /* LIBCURL_VERSION_NUM */
3062   const char *host;         /* OS/host/cpu/machine when configured */
3063   int features;             /* bitmask, see defines below */
3064   const char *ssl_version;  /* human readable string */
3065   long ssl_version_num;     /* not used anymore, always 0 */
3066   const char *libz_version; /* human readable string */
3067   /* protocols is terminated by an entry with a NULL protoname */
3068   const char * const *protocols;
3069 
3070   /* The fields below this were added in CURLVERSION_SECOND */
3071   const char *ares;
3072   int ares_num;
3073 
3074   /* This field was added in CURLVERSION_THIRD */
3075   const char *libidn;
3076 
3077   /* These field were added in CURLVERSION_FOURTH */
3078 
3079   /* Same as '_libiconv_version' if built with HAVE_ICONV */
3080   int iconv_ver_num;
3081 
3082   const char *libssh_version; /* human readable string */
3083 
3084   /* These fields were added in CURLVERSION_FIFTH */
3085   unsigned int brotli_ver_num; /* Numeric Brotli version
3086                                   (MAJOR << 24) | (MINOR << 12) | PATCH */
3087   const char *brotli_version; /* human readable string. */
3088 
3089   /* These fields were added in CURLVERSION_SIXTH */
3090   unsigned int nghttp2_ver_num; /* Numeric nghttp2 version
3091                                    (MAJOR << 16) | (MINOR << 8) | PATCH */
3092   const char *nghttp2_version; /* human readable string. */
3093   const char *quic_version;    /* human readable quic (+ HTTP/3) library +
3094                                   version or NULL */
3095 
3096   /* These fields were added in CURLVERSION_SEVENTH */
3097   const char *cainfo;          /* the built-in default CURLOPT_CAINFO, might
3098                                   be NULL */
3099   const char *capath;          /* the built-in default CURLOPT_CAPATH, might
3100                                   be NULL */
3101 
3102   /* These fields were added in CURLVERSION_EIGHTH */
3103   unsigned int zstd_ver_num; /* Numeric Zstd version
3104                                   (MAJOR << 24) | (MINOR << 12) | PATCH */
3105   const char *zstd_version; /* human readable string. */
3106 
3107   /* These fields were added in CURLVERSION_NINTH */
3108   const char *hyper_version; /* human readable string. */
3109 
3110   /* These fields were added in CURLVERSION_TENTH */
3111   const char *gsasl_version; /* human readable string. */
3112 
3113   /* These fields were added in CURLVERSION_ELEVENTH */
3114   /* feature_names is terminated by an entry with a NULL feature name */
3115   const char * const *feature_names;
3116 };
3117 typedef struct curl_version_info_data curl_version_info_data;
3118 
3119 #define CURL_VERSION_IPV6         (1<<0)  /* IPv6-enabled */
3120 #define CURL_VERSION_KERBEROS4    (1<<1)  /* Kerberos V4 auth is supported
3121                                              (deprecated) */
3122 #define CURL_VERSION_SSL          (1<<2)  /* SSL options are present */
3123 #define CURL_VERSION_LIBZ         (1<<3)  /* libz features are present */
3124 #define CURL_VERSION_NTLM         (1<<4)  /* NTLM auth is supported */
3125 #define CURL_VERSION_GSSNEGOTIATE (1<<5)  /* Negotiate auth is supported
3126                                              (deprecated) */
3127 #define CURL_VERSION_DEBUG        (1<<6)  /* Built with debug capabilities */
3128 #define CURL_VERSION_ASYNCHDNS    (1<<7)  /* Asynchronous DNS resolves */
3129 #define CURL_VERSION_SPNEGO       (1<<8)  /* SPNEGO auth is supported */
3130 #define CURL_VERSION_LARGEFILE    (1<<9)  /* Supports files larger than 2GB */
3131 #define CURL_VERSION_IDN          (1<<10) /* Internationized Domain Names are
3132                                              supported */
3133 #define CURL_VERSION_SSPI         (1<<11) /* Built against Windows SSPI */
3134 #define CURL_VERSION_CONV         (1<<12) /* Character conversions supported */
3135 #define CURL_VERSION_CURLDEBUG    (1<<13) /* Debug memory tracking supported */
3136 #define CURL_VERSION_TLSAUTH_SRP  (1<<14) /* TLS-SRP auth is supported */
3137 #define CURL_VERSION_NTLM_WB      (1<<15) /* NTLM delegation to winbind helper
3138                                              is supported */
3139 #define CURL_VERSION_HTTP2        (1<<16) /* HTTP2 support built-in */
3140 #define CURL_VERSION_GSSAPI       (1<<17) /* Built against a GSS-API library */
3141 #define CURL_VERSION_KERBEROS5    (1<<18) /* Kerberos V5 auth is supported */
3142 #define CURL_VERSION_UNIX_SOCKETS (1<<19) /* Unix domain sockets support */
3143 #define CURL_VERSION_PSL          (1<<20) /* Mozilla's Public Suffix List, used
3144                                              for cookie domain verification */
3145 #define CURL_VERSION_HTTPS_PROXY  (1<<21) /* HTTPS-proxy support built-in */
3146 #define CURL_VERSION_MULTI_SSL    (1<<22) /* Multiple SSL backends available */
3147 #define CURL_VERSION_BROTLI       (1<<23) /* Brotli features are present. */
3148 #define CURL_VERSION_ALTSVC       (1<<24) /* Alt-Svc handling built-in */
3149 #define CURL_VERSION_HTTP3        (1<<25) /* HTTP3 support built-in */
3150 #define CURL_VERSION_ZSTD         (1<<26) /* zstd features are present */
3151 #define CURL_VERSION_UNICODE      (1<<27) /* Unicode support on Windows */
3152 #define CURL_VERSION_HSTS         (1<<28) /* HSTS is supported */
3153 #define CURL_VERSION_GSASL        (1<<29) /* libgsasl is supported */
3154 #define CURL_VERSION_THREADSAFE   (1<<30) /* libcurl API is thread-safe */
3155 
3156  /*
3157  * NAME curl_version_info()
3158  *
3159  * DESCRIPTION
3160  *
3161  * This function returns a pointer to a static copy of the version info
3162  * struct. See above.
3163  */
3164 CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);
3165 
3166 /*
3167  * NAME curl_easy_strerror()
3168  *
3169  * DESCRIPTION
3170  *
3171  * The curl_easy_strerror function may be used to turn a CURLcode value
3172  * into the equivalent human readable error string.  This is useful
3173  * for printing meaningful error messages.
3174  */
3175 CURL_EXTERN const char *curl_easy_strerror(CURLcode);
3176 
3177 /*
3178  * NAME curl_share_strerror()
3179  *
3180  * DESCRIPTION
3181  *
3182  * The curl_share_strerror function may be used to turn a CURLSHcode value
3183  * into the equivalent human readable error string.  This is useful
3184  * for printing meaningful error messages.
3185  */
3186 CURL_EXTERN const char *curl_share_strerror(CURLSHcode);
3187 
3188 /*
3189  * NAME curl_easy_pause()
3190  *
3191  * DESCRIPTION
3192  *
3193  * The curl_easy_pause function pauses or unpauses transfers. Select the new
3194  * state by setting the bitmask, use the convenience defines below.
3195  *
3196  */
3197 CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
3198 
3199 #define CURLPAUSE_RECV      (1<<0)
3200 #define CURLPAUSE_RECV_CONT (0)
3201 
3202 #define CURLPAUSE_SEND      (1<<2)
3203 #define CURLPAUSE_SEND_CONT (0)
3204 
3205 #define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
3206 #define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)
3207 
3208 #ifdef  __cplusplus
3209 } /* end of extern "C" */
3210 #endif
3211 
3212 /* unfortunately, the easy.h and multi.h include files need options and info
3213   stuff before they can be included! */
3214 #include "easy.h" /* nothing in curl is fun without the easy stuff */
3215 #include "multi.h"
3216 #include "urlapi.h"
3217 #include "options.h"
3218 #include "header.h"
3219 #include "websockets.h"
3220 #include "mprintf.h"
3221 
3222 /* the typechecker doesn't work in C++ (yet) */
3223 #if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
3224     ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
3225     !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
3226 #include "typecheck-gcc.h"
3227 #else
3228 #if defined(__STDC__) && (__STDC__ >= 1)
3229 /* This preprocessor magic that replaces a call with the exact same call is
3230    only done to make sure application authors pass exactly three arguments
3231    to these functions. */
3232 #define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
3233 #define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
3234 #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
3235 #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
3236 #endif /* __STDC__ >= 1 */
3237 #endif /* gcc >= 4.3 && !__cplusplus && !CURL_DISABLE_TYPECHECK */
3238 
3239 #endif /* CURLINC_CURL_H */
3240