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curl.h (133928B)


      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 /* not used since 8.11.0 */
     34 #endif
     35 
     36 /* Compile-time deprecation macros. */
     37 #if (defined(__GNUC__) &&                                              \
     38   ((__GNUC__ > 12) || ((__GNUC__ == 12) && (__GNUC_MINOR__ >= 1))) ||  \
     39   (defined(__clang__) && __clang_major__ >= 3) ||                      \
     40   defined(__IAR_SYSTEMS_ICC__)) &&                                     \
     41   !defined(__INTEL_COMPILER) &&                                        \
     42   !defined(CURL_DISABLE_DEPRECATION) && !defined(BUILDING_LIBCURL)
     43 #define CURL_DEPRECATED(version, message)                       \
     44   __attribute__((deprecated("since " # version ". " message)))
     45 #ifdef __IAR_SYSTEMS_ICC__
     46 #define CURL_IGNORE_DEPRECATION(statements) \
     47       _Pragma("diag_suppress=Pe1444") \
     48       statements \
     49       _Pragma("diag_default=Pe1444")
     50 #else
     51 #define CURL_IGNORE_DEPRECATION(statements) \
     52       _Pragma("GCC diagnostic push") \
     53       _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
     54       statements \
     55       _Pragma("GCC diagnostic pop")
     56 #endif
     57 #else
     58 #define CURL_DEPRECATED(version, message)
     59 #define CURL_IGNORE_DEPRECATION(statements)     statements
     60 #endif
     61 
     62 #include "curlver.h"         /* libcurl version defines   */
     63 #include "system.h"          /* determine things runtime */
     64 
     65 #include <stdio.h>
     66 #include <limits.h>
     67 
     68 #if defined(__FreeBSD__) || defined(__MidnightBSD__)
     69 /* Needed for __FreeBSD_version or __MidnightBSD_version symbol definition */
     70 #include <sys/param.h>
     71 #endif
     72 
     73 /* The include stuff here below is mainly for time_t! */
     74 #include <sys/types.h>
     75 #include <time.h>
     76 
     77 #if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
     78 #if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
     79       defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
     80 /* The check above prevents the winsock2.h inclusion if winsock.h already was
     81    included, since they cannot co-exist without problems */
     82 #include <winsock2.h>
     83 #include <ws2tcpip.h>
     84 #endif
     85 #endif
     86 
     87 /* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
     88    libc5-based Linux systems. Only include it on systems that are known to
     89    require it! */
     90 #if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
     91     defined(__minix) || defined(__INTEGRITY) || \
     92     defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__) || \
     93     defined(__CYGWIN__) || defined(AMIGA) || defined(__NuttX__) || \
     94    (defined(__FreeBSD_version) && (__FreeBSD_version < 800000)) || \
     95    (defined(__MidnightBSD_version) && (__MidnightBSD_version < 100000)) || \
     96     defined(__sun__) || defined(__serenity__) || defined(__vxworks__)
     97 #include <sys/select.h>
     98 #endif
     99 
    100 #ifndef _WIN32
    101 #include <sys/socket.h>
    102 #include <sys/time.h>
    103 #endif
    104 
    105 #ifdef  __cplusplus
    106 extern "C" {
    107 #endif
    108 
    109 typedef void CURL;
    110 typedef void CURLSH;
    111 
    112 /*
    113  * libcurl external API function linkage decorations.
    114  */
    115 
    116 #ifdef __has_declspec_attribute
    117 #define CURL_HAS_DECLSPEC_ATTRIBUTE(x) __has_declspec_attribute(x)
    118 #else
    119 #define CURL_HAS_DECLSPEC_ATTRIBUTE(x) 0
    120 #endif
    121 
    122 #ifdef CURL_STATICLIB
    123 #  define CURL_EXTERN
    124 #elif defined(_WIN32) || \
    125      (CURL_HAS_DECLSPEC_ATTRIBUTE(dllexport) && \
    126       CURL_HAS_DECLSPEC_ATTRIBUTE(dllimport))
    127 #  if defined(BUILDING_LIBCURL)
    128 #    define CURL_EXTERN  __declspec(dllexport)
    129 #  else
    130 #    define CURL_EXTERN  __declspec(dllimport)
    131 #  endif
    132 #elif defined(BUILDING_LIBCURL) && defined(CURL_HIDDEN_SYMBOLS)
    133 #  define CURL_EXTERN CURL_EXTERN_SYMBOL
    134 #else
    135 #  define CURL_EXTERN
    136 #endif
    137 
    138 #ifndef curl_socket_typedef
    139 /* socket typedef */
    140 #if defined(_WIN32) && !defined(__LWIP_OPT_H__) && !defined(LWIP_HDR_OPT_H)
    141 typedef SOCKET curl_socket_t;
    142 #define CURL_SOCKET_BAD INVALID_SOCKET
    143 #else
    144 typedef int curl_socket_t;
    145 #define CURL_SOCKET_BAD -1
    146 #endif
    147 #define curl_socket_typedef
    148 #endif /* curl_socket_typedef */
    149 
    150 /* enum for the different supported SSL backends */
    151 typedef enum {
    152   CURLSSLBACKEND_NONE = 0,
    153   CURLSSLBACKEND_OPENSSL = 1,
    154   CURLSSLBACKEND_GNUTLS = 2,
    155   CURLSSLBACKEND_NSS                    CURL_DEPRECATED(8.3.0, "") = 3,
    156   CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
    157   CURLSSLBACKEND_GSKIT                  CURL_DEPRECATED(8.3.0, "") = 5,
    158   CURLSSLBACKEND_POLARSSL               CURL_DEPRECATED(7.69.0, "") = 6,
    159   CURLSSLBACKEND_WOLFSSL = 7,
    160   CURLSSLBACKEND_SCHANNEL = 8,
    161   CURLSSLBACKEND_SECURETRANSPORT        CURL_DEPRECATED(8.15.0, "") = 9,
    162   CURLSSLBACKEND_AXTLS                  CURL_DEPRECATED(7.61.0, "") = 10,
    163   CURLSSLBACKEND_MBEDTLS = 11,
    164   CURLSSLBACKEND_MESALINK               CURL_DEPRECATED(7.82.0, "") = 12,
    165   CURLSSLBACKEND_BEARSSL                CURL_DEPRECATED(8.15.0, "") = 13,
    166   CURLSSLBACKEND_RUSTLS = 14
    167 } curl_sslbackend;
    168 
    169 /* aliases for library clones and renames */
    170 #define CURLSSLBACKEND_AWSLC CURLSSLBACKEND_OPENSSL
    171 #define CURLSSLBACKEND_BORINGSSL CURLSSLBACKEND_OPENSSL
    172 #define CURLSSLBACKEND_LIBRESSL CURLSSLBACKEND_OPENSSL
    173 
    174 /* deprecated names: */
    175 #define CURLSSLBACKEND_CYASSL CURLSSLBACKEND_WOLFSSL
    176 #define CURLSSLBACKEND_DARWINSSL CURLSSLBACKEND_SECURETRANSPORT
    177 
    178 /* bits for the CURLOPT_FOLLOWLOCATION option */
    179 #define CURLFOLLOW_ALL       1L /* generic follow redirects */
    180 
    181 /* Do not use the custom method in the follow-up request if the HTTP code
    182    instructs so (301, 302, 303). */
    183 #define CURLFOLLOW_OBEYCODE  2L
    184 
    185 /* Only use the custom method in the first request, always reset in the next */
    186 #define CURLFOLLOW_FIRSTONLY 3L
    187 
    188 struct curl_httppost {
    189   struct curl_httppost *next;       /* next entry in the list */
    190   char *name;                       /* pointer to allocated name */
    191   long namelength;                  /* length of name length */
    192   char *contents;                   /* pointer to allocated data contents */
    193   long contentslength;              /* length of contents field, see also
    194                                        CURL_HTTPPOST_LARGE */
    195   char *buffer;                     /* pointer to allocated buffer contents */
    196   long bufferlength;                /* length of buffer field */
    197   char *contenttype;                /* Content-Type */
    198   struct curl_slist *contentheader; /* list of extra headers for this form */
    199   struct curl_httppost *more;       /* if one field name has more than one
    200                                        file, this link should link to following
    201                                        files */
    202   long flags;                       /* as defined below */
    203 
    204 /* specified content is a filename */
    205 #define CURL_HTTPPOST_FILENAME (1<<0)
    206 /* specified content is a filename */
    207 #define CURL_HTTPPOST_READFILE (1<<1)
    208 /* name is only stored pointer do not free in formfree */
    209 #define CURL_HTTPPOST_PTRNAME (1<<2)
    210 /* contents is only stored pointer do not free in formfree */
    211 #define CURL_HTTPPOST_PTRCONTENTS (1<<3)
    212 /* upload file from buffer */
    213 #define CURL_HTTPPOST_BUFFER (1<<4)
    214 /* upload file from pointer contents */
    215 #define CURL_HTTPPOST_PTRBUFFER (1<<5)
    216 /* upload file contents by using the regular read callback to get the data and
    217    pass the given pointer as custom pointer */
    218 #define CURL_HTTPPOST_CALLBACK (1<<6)
    219 /* use size in 'contentlen', added in 7.46.0 */
    220 #define CURL_HTTPPOST_LARGE (1<<7)
    221 
    222   char *showfilename;               /* The filename to show. If not set, the
    223                                        actual filename will be used (if this
    224                                        is a file part) */
    225   void *userp;                      /* custom pointer used for
    226                                        HTTPPOST_CALLBACK posts */
    227   curl_off_t contentlen;            /* alternative length of contents
    228                                        field. Used if CURL_HTTPPOST_LARGE is
    229                                        set. Added in 7.46.0 */
    230 };
    231 
    232 
    233 /* This is a return code for the progress callback that, when returned, will
    234    signal libcurl to continue executing the default progress function */
    235 #define CURL_PROGRESSFUNC_CONTINUE 0x10000001
    236 
    237 /* This is the CURLOPT_PROGRESSFUNCTION callback prototype. It is now
    238    considered deprecated but was the only choice up until 7.31.0 */
    239 typedef int (*curl_progress_callback)(void *clientp,
    240                                       double dltotal,
    241                                       double dlnow,
    242                                       double ultotal,
    243                                       double ulnow);
    244 
    245 /* This is the CURLOPT_XFERINFOFUNCTION callback prototype. It was introduced
    246    in 7.32.0, avoids the use of floating point numbers and provides more
    247    detailed information. */
    248 typedef int (*curl_xferinfo_callback)(void *clientp,
    249                                       curl_off_t dltotal,
    250                                       curl_off_t dlnow,
    251                                       curl_off_t ultotal,
    252                                       curl_off_t ulnow);
    253 
    254 #ifndef CURL_MAX_READ_SIZE
    255   /* The maximum receive buffer size configurable via CURLOPT_BUFFERSIZE. */
    256 #define CURL_MAX_READ_SIZE (10*1024*1024)
    257 #endif
    258 
    259 #ifndef CURL_MAX_WRITE_SIZE
    260   /* Tests have proven that 20K is a bad buffer size for uploads on Windows,
    261      while 16K for some odd reason performed a lot better. We do the ifndef
    262      check to allow this value to easier be changed at build time for those
    263      who feel adventurous. The practical minimum is about 400 bytes since
    264      libcurl uses a buffer of this size as a scratch area (unrelated to
    265      network send operations). */
    266 #define CURL_MAX_WRITE_SIZE 16384
    267 #endif
    268 
    269 #ifndef CURL_MAX_HTTP_HEADER
    270 /* The only reason to have a max limit for this is to avoid the risk of a bad
    271    server feeding libcurl with a never-ending header that will cause reallocs
    272    infinitely */
    273 #define CURL_MAX_HTTP_HEADER (100*1024)
    274 #endif
    275 
    276 /* This is a magic return code for the write callback that, when returned,
    277    will signal libcurl to pause receiving on the current transfer. */
    278 #define CURL_WRITEFUNC_PAUSE 0x10000001
    279 
    280 /* This is a magic return code for the write callback that, when returned,
    281    will signal an error from the callback. */
    282 #define CURL_WRITEFUNC_ERROR 0xFFFFFFFF
    283 
    284 typedef size_t (*curl_write_callback)(char *buffer,
    285                                       size_t size,
    286                                       size_t nitems,
    287                                       void *outstream);
    288 
    289 /* This callback will be called when a new resolver request is made */
    290 typedef int (*curl_resolver_start_callback)(void *resolver_state,
    291                                             void *reserved, void *userdata);
    292 
    293 /* enumeration of file types */
    294 typedef enum {
    295   CURLFILETYPE_FILE = 0,
    296   CURLFILETYPE_DIRECTORY,
    297   CURLFILETYPE_SYMLINK,
    298   CURLFILETYPE_DEVICE_BLOCK,
    299   CURLFILETYPE_DEVICE_CHAR,
    300   CURLFILETYPE_NAMEDPIPE,
    301   CURLFILETYPE_SOCKET,
    302   CURLFILETYPE_DOOR, /* is possible only on Sun Solaris now */
    303 
    304   CURLFILETYPE_UNKNOWN /* should never occur */
    305 } curlfiletype;
    306 
    307 #define CURLFINFOFLAG_KNOWN_FILENAME    (1<<0)
    308 #define CURLFINFOFLAG_KNOWN_FILETYPE    (1<<1)
    309 #define CURLFINFOFLAG_KNOWN_TIME        (1<<2)
    310 #define CURLFINFOFLAG_KNOWN_PERM        (1<<3)
    311 #define CURLFINFOFLAG_KNOWN_UID         (1<<4)
    312 #define CURLFINFOFLAG_KNOWN_GID         (1<<5)
    313 #define CURLFINFOFLAG_KNOWN_SIZE        (1<<6)
    314 #define CURLFINFOFLAG_KNOWN_HLINKCOUNT  (1<<7)
    315 
    316 /* Information about a single file, used when doing FTP wildcard matching */
    317 struct curl_fileinfo {
    318   char *filename;
    319   curlfiletype filetype;
    320   time_t time; /* always zero! */
    321   unsigned int perm;
    322   int uid;
    323   int gid;
    324   curl_off_t size;
    325   long int hardlinks;
    326 
    327   struct {
    328     /* If some of these fields is not NULL, it is a pointer to b_data. */
    329     char *time;
    330     char *perm;
    331     char *user;
    332     char *group;
    333     char *target; /* pointer to the target filename of a symlink */
    334   } strings;
    335 
    336   unsigned int flags;
    337 
    338   /* These are libcurl private struct fields. Previously used by libcurl, so
    339      they must never be interfered with. */
    340   char *b_data;
    341   size_t b_size;
    342   size_t b_used;
    343 };
    344 
    345 /* return codes for CURLOPT_CHUNK_BGN_FUNCTION */
    346 #define CURL_CHUNK_BGN_FUNC_OK      0
    347 #define CURL_CHUNK_BGN_FUNC_FAIL    1 /* tell the lib to end the task */
    348 #define CURL_CHUNK_BGN_FUNC_SKIP    2 /* skip this chunk over */
    349 
    350 /* if splitting of data transfer is enabled, this callback is called before
    351    download of an individual chunk started. Note that parameter "remains" works
    352    only for FTP wildcard downloading (for now), otherwise is not used */
    353 typedef long (*curl_chunk_bgn_callback)(const void *transfer_info,
    354                                         void *ptr,
    355                                         int remains);
    356 
    357 /* return codes for CURLOPT_CHUNK_END_FUNCTION */
    358 #define CURL_CHUNK_END_FUNC_OK      0
    359 #define CURL_CHUNK_END_FUNC_FAIL    1 /* tell the lib to end the task */
    360 
    361 /* If splitting of data transfer is enabled this callback is called after
    362    download of an individual chunk finished.
    363    Note! After this callback was set then it have to be called FOR ALL chunks.
    364    Even if downloading of this chunk was skipped in CHUNK_BGN_FUNC.
    365    This is the reason why we do not need "transfer_info" parameter in this
    366    callback and we are not interested in "remains" parameter too. */
    367 typedef long (*curl_chunk_end_callback)(void *ptr);
    368 
    369 /* return codes for FNMATCHFUNCTION */
    370 #define CURL_FNMATCHFUNC_MATCH    0 /* string corresponds to the pattern */
    371 #define CURL_FNMATCHFUNC_NOMATCH  1 /* pattern does not match the string */
    372 #define CURL_FNMATCHFUNC_FAIL     2 /* an error occurred */
    373 
    374 /* callback type for wildcard downloading pattern matching. If the
    375    string matches the pattern, return CURL_FNMATCHFUNC_MATCH value, etc. */
    376 typedef int (*curl_fnmatch_callback)(void *ptr,
    377                                      const char *pattern,
    378                                      const char *string);
    379 
    380 /* These are the return codes for the seek callbacks */
    381 #define CURL_SEEKFUNC_OK       0
    382 #define CURL_SEEKFUNC_FAIL     1 /* fail the entire transfer */
    383 #define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking cannot be done, so
    384                                     libcurl might try other means instead */
    385 typedef int (*curl_seek_callback)(void *instream,
    386                                   curl_off_t offset,
    387                                   int origin); /* 'whence' */
    388 
    389 /* This is a return code for the read callback that, when returned, will
    390    signal libcurl to immediately abort the current transfer. */
    391 #define CURL_READFUNC_ABORT 0x10000000
    392 /* This is a return code for the read callback that, when returned, will
    393    signal libcurl to pause sending data on the current transfer. */
    394 #define CURL_READFUNC_PAUSE 0x10000001
    395 
    396 /* Return code for when the trailing headers' callback has terminated
    397    without any errors */
    398 #define CURL_TRAILERFUNC_OK 0
    399 /* Return code for when was an error in the trailing header's list and we
    400   want to abort the request */
    401 #define CURL_TRAILERFUNC_ABORT 1
    402 
    403 typedef size_t (*curl_read_callback)(char *buffer,
    404                                       size_t size,
    405                                       size_t nitems,
    406                                       void *instream);
    407 
    408 typedef int (*curl_trailer_callback)(struct curl_slist **list,
    409                                       void *userdata);
    410 
    411 typedef enum {
    412   CURLSOCKTYPE_IPCXN,  /* socket created for a specific IP connection */
    413   CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
    414   CURLSOCKTYPE_LAST    /* never use */
    415 } curlsocktype;
    416 
    417 /* The return code from the sockopt_callback can signal information back
    418    to libcurl: */
    419 #define CURL_SOCKOPT_OK 0
    420 #define CURL_SOCKOPT_ERROR 1 /* causes libcurl to abort and return
    421                                 CURLE_ABORTED_BY_CALLBACK */
    422 #define CURL_SOCKOPT_ALREADY_CONNECTED 2
    423 
    424 typedef int (*curl_sockopt_callback)(void *clientp,
    425                                      curl_socket_t curlfd,
    426                                      curlsocktype purpose);
    427 
    428 struct curl_sockaddr {
    429   int family;
    430   int socktype;
    431   int protocol;
    432   unsigned int addrlen; /* addrlen was a socklen_t type before 7.18.0 but it
    433                            turned really ugly and painful on the systems that
    434                            lack this type */
    435   struct sockaddr addr;
    436 };
    437 
    438 typedef curl_socket_t
    439 (*curl_opensocket_callback)(void *clientp,
    440                             curlsocktype purpose,
    441                             struct curl_sockaddr *address);
    442 
    443 typedef int
    444 (*curl_closesocket_callback)(void *clientp, curl_socket_t item);
    445 
    446 typedef enum {
    447   CURLIOE_OK,            /* I/O operation successful */
    448   CURLIOE_UNKNOWNCMD,    /* command was unknown to callback */
    449   CURLIOE_FAILRESTART,   /* failed to restart the read */
    450   CURLIOE_LAST           /* never use */
    451 } curlioerr;
    452 
    453 typedef enum {
    454   CURLIOCMD_NOP,         /* no operation */
    455   CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
    456   CURLIOCMD_LAST         /* never use */
    457 } curliocmd;
    458 
    459 typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
    460                                          int cmd,
    461                                          void *clientp);
    462 
    463 #ifndef CURL_DID_MEMORY_FUNC_TYPEDEFS
    464 /*
    465  * The following typedef's are signatures of malloc, free, realloc, strdup and
    466  * calloc respectively. Function pointers of these types can be passed to the
    467  * curl_global_init_mem() function to set user defined memory management
    468  * callback routines.
    469  */
    470 typedef void *(*curl_malloc_callback)(size_t size);
    471 typedef void (*curl_free_callback)(void *ptr);
    472 typedef void *(*curl_realloc_callback)(void *ptr, size_t size);
    473 typedef char *(*curl_strdup_callback)(const char *str);
    474 typedef void *(*curl_calloc_callback)(size_t nmemb, size_t size);
    475 
    476 #define CURL_DID_MEMORY_FUNC_TYPEDEFS
    477 #endif
    478 
    479 /* the kind of data that is passed to information_callback */
    480 typedef enum {
    481   CURLINFO_TEXT = 0,
    482   CURLINFO_HEADER_IN,    /* 1 */
    483   CURLINFO_HEADER_OUT,   /* 2 */
    484   CURLINFO_DATA_IN,      /* 3 */
    485   CURLINFO_DATA_OUT,     /* 4 */
    486   CURLINFO_SSL_DATA_IN,  /* 5 */
    487   CURLINFO_SSL_DATA_OUT, /* 6 */
    488   CURLINFO_END
    489 } curl_infotype;
    490 
    491 typedef int (*curl_debug_callback)
    492        (CURL *handle,      /* the handle/transfer this concerns */
    493         curl_infotype type, /* what kind of data */
    494         char *data,        /* points to the data */
    495         size_t size,       /* size of the data pointed to */
    496         void *userptr);    /* whatever the user please */
    497 
    498 /* This is the CURLOPT_PREREQFUNCTION callback prototype. */
    499 typedef int (*curl_prereq_callback)(void *clientp,
    500                                     char *conn_primary_ip,
    501                                     char *conn_local_ip,
    502                                     int conn_primary_port,
    503                                     int conn_local_port);
    504 
    505 /* Return code for when the pre-request callback has terminated without
    506    any errors */
    507 #define CURL_PREREQFUNC_OK 0
    508 /* Return code for when the pre-request callback wants to abort the
    509    request */
    510 #define CURL_PREREQFUNC_ABORT 1
    511 
    512 /* All possible error codes from all sorts of curl functions. Future versions
    513    may return other values, stay prepared.
    514 
    515    Always add new return codes last. Never *EVER* remove any. The return
    516    codes must remain the same!
    517  */
    518 
    519 typedef enum {
    520   CURLE_OK = 0,
    521   CURLE_UNSUPPORTED_PROTOCOL,    /* 1 */
    522   CURLE_FAILED_INIT,             /* 2 */
    523   CURLE_URL_MALFORMAT,           /* 3 */
    524   CURLE_NOT_BUILT_IN,            /* 4 - [was obsoleted in August 2007 for
    525                                     7.17.0, reused in April 2011 for 7.21.5] */
    526   CURLE_COULDNT_RESOLVE_PROXY,   /* 5 */
    527   CURLE_COULDNT_RESOLVE_HOST,    /* 6 */
    528   CURLE_COULDNT_CONNECT,         /* 7 */
    529   CURLE_WEIRD_SERVER_REPLY,      /* 8 */
    530   CURLE_REMOTE_ACCESS_DENIED,    /* 9 a service was denied by the server
    531                                     due to lack of access - when login fails
    532                                     this is not returned. */
    533   CURLE_FTP_ACCEPT_FAILED,       /* 10 - [was obsoleted in April 2006 for
    534                                     7.15.4, reused in Dec 2011 for 7.24.0]*/
    535   CURLE_FTP_WEIRD_PASS_REPLY,    /* 11 */
    536   CURLE_FTP_ACCEPT_TIMEOUT,      /* 12 - timeout occurred accepting server
    537                                     [was obsoleted in August 2007 for 7.17.0,
    538                                     reused in Dec 2011 for 7.24.0]*/
    539   CURLE_FTP_WEIRD_PASV_REPLY,    /* 13 */
    540   CURLE_FTP_WEIRD_227_FORMAT,    /* 14 */
    541   CURLE_FTP_CANT_GET_HOST,       /* 15 */
    542   CURLE_HTTP2,                   /* 16 - A problem in the http2 framing layer.
    543                                     [was obsoleted in August 2007 for 7.17.0,
    544                                     reused in July 2014 for 7.38.0] */
    545   CURLE_FTP_COULDNT_SET_TYPE,    /* 17 */
    546   CURLE_PARTIAL_FILE,            /* 18 */
    547   CURLE_FTP_COULDNT_RETR_FILE,   /* 19 */
    548   CURLE_OBSOLETE20,              /* 20 - NOT USED */
    549   CURLE_QUOTE_ERROR,             /* 21 - quote command failure */
    550   CURLE_HTTP_RETURNED_ERROR,     /* 22 */
    551   CURLE_WRITE_ERROR,             /* 23 */
    552   CURLE_OBSOLETE24,              /* 24 - NOT USED */
    553   CURLE_UPLOAD_FAILED,           /* 25 - failed upload "command" */
    554   CURLE_READ_ERROR,              /* 26 - could not open/read from file */
    555   CURLE_OUT_OF_MEMORY,           /* 27 */
    556   CURLE_OPERATION_TIMEDOUT,      /* 28 - the timeout time was reached */
    557   CURLE_OBSOLETE29,              /* 29 - NOT USED */
    558   CURLE_FTP_PORT_FAILED,         /* 30 - FTP PORT operation failed */
    559   CURLE_FTP_COULDNT_USE_REST,    /* 31 - the REST command failed */
    560   CURLE_OBSOLETE32,              /* 32 - NOT USED */
    561   CURLE_RANGE_ERROR,             /* 33 - RANGE "command" did not work */
    562   CURLE_OBSOLETE34,              /* 34 */
    563   CURLE_SSL_CONNECT_ERROR,       /* 35 - wrong when connecting with SSL */
    564   CURLE_BAD_DOWNLOAD_RESUME,     /* 36 - could not resume download */
    565   CURLE_FILE_COULDNT_READ_FILE,  /* 37 */
    566   CURLE_LDAP_CANNOT_BIND,        /* 38 */
    567   CURLE_LDAP_SEARCH_FAILED,      /* 39 */
    568   CURLE_OBSOLETE40,              /* 40 - NOT USED */
    569   CURLE_OBSOLETE41,              /* 41 - NOT USED starting with 7.53.0 */
    570   CURLE_ABORTED_BY_CALLBACK,     /* 42 */
    571   CURLE_BAD_FUNCTION_ARGUMENT,   /* 43 */
    572   CURLE_OBSOLETE44,              /* 44 - NOT USED */
    573   CURLE_INTERFACE_FAILED,        /* 45 - CURLOPT_INTERFACE failed */
    574   CURLE_OBSOLETE46,              /* 46 - NOT USED */
    575   CURLE_TOO_MANY_REDIRECTS,      /* 47 - catch endless re-direct loops */
    576   CURLE_UNKNOWN_OPTION,          /* 48 - User specified an unknown option */
    577   CURLE_SETOPT_OPTION_SYNTAX,    /* 49 - Malformed setopt option */
    578   CURLE_OBSOLETE50,              /* 50 - NOT USED */
    579   CURLE_OBSOLETE51,              /* 51 - NOT USED */
    580   CURLE_GOT_NOTHING,             /* 52 - when this is a specific error */
    581   CURLE_SSL_ENGINE_NOTFOUND,     /* 53 - SSL crypto engine not found */
    582   CURLE_SSL_ENGINE_SETFAILED,    /* 54 - can not set SSL crypto engine as
    583                                     default */
    584   CURLE_SEND_ERROR,              /* 55 - failed sending network data */
    585   CURLE_RECV_ERROR,              /* 56 - failure in receiving network data */
    586   CURLE_OBSOLETE57,              /* 57 - NOT IN USE */
    587   CURLE_SSL_CERTPROBLEM,         /* 58 - problem with the local certificate */
    588   CURLE_SSL_CIPHER,              /* 59 - could not use specified cipher */
    589   CURLE_PEER_FAILED_VERIFICATION, /* 60 - peer's certificate or fingerprint
    590                                      was not verified fine */
    591   CURLE_BAD_CONTENT_ENCODING,    /* 61 - Unrecognized/bad encoding */
    592   CURLE_OBSOLETE62,              /* 62 - NOT IN USE since 7.82.0 */
    593   CURLE_FILESIZE_EXCEEDED,       /* 63 - Maximum file size exceeded */
    594   CURLE_USE_SSL_FAILED,          /* 64 - Requested FTP SSL level failed */
    595   CURLE_SEND_FAIL_REWIND,        /* 65 - Sending the data requires a rewind
    596                                     that failed */
    597   CURLE_SSL_ENGINE_INITFAILED,   /* 66 - failed to initialise ENGINE */
    598   CURLE_LOGIN_DENIED,            /* 67 - user, password or similar was not
    599                                     accepted and we failed to login */
    600   CURLE_TFTP_NOTFOUND,           /* 68 - file not found on server */
    601   CURLE_TFTP_PERM,               /* 69 - permission problem on server */
    602   CURLE_REMOTE_DISK_FULL,        /* 70 - out of disk space on server */
    603   CURLE_TFTP_ILLEGAL,            /* 71 - Illegal TFTP operation */
    604   CURLE_TFTP_UNKNOWNID,          /* 72 - Unknown transfer ID */
    605   CURLE_REMOTE_FILE_EXISTS,      /* 73 - File already exists */
    606   CURLE_TFTP_NOSUCHUSER,         /* 74 - No such user */
    607   CURLE_OBSOLETE75,              /* 75 - NOT IN USE since 7.82.0 */
    608   CURLE_OBSOLETE76,              /* 76 - NOT IN USE since 7.82.0 */
    609   CURLE_SSL_CACERT_BADFILE,      /* 77 - could not load CACERT file, missing
    610                                     or wrong format */
    611   CURLE_REMOTE_FILE_NOT_FOUND,   /* 78 - remote file not found */
    612   CURLE_SSH,                     /* 79 - error from the SSH layer, somewhat
    613                                     generic so the error message will be of
    614                                     interest when this has happened */
    615 
    616   CURLE_SSL_SHUTDOWN_FAILED,     /* 80 - Failed to shut down the SSL
    617                                     connection */
    618   CURLE_AGAIN,                   /* 81 - socket is not ready for send/recv,
    619                                     wait till it is ready and try again (Added
    620                                     in 7.18.2) */
    621   CURLE_SSL_CRL_BADFILE,         /* 82 - could not load CRL file, missing or
    622                                     wrong format (Added in 7.19.0) */
    623   CURLE_SSL_ISSUER_ERROR,        /* 83 - Issuer check failed.  (Added in
    624                                     7.19.0) */
    625   CURLE_FTP_PRET_FAILED,         /* 84 - a PRET command failed */
    626   CURLE_RTSP_CSEQ_ERROR,         /* 85 - mismatch of RTSP CSeq numbers */
    627   CURLE_RTSP_SESSION_ERROR,      /* 86 - mismatch of RTSP Session Ids */
    628   CURLE_FTP_BAD_FILE_LIST,       /* 87 - unable to parse FTP file list */
    629   CURLE_CHUNK_FAILED,            /* 88 - chunk callback reported error */
    630   CURLE_NO_CONNECTION_AVAILABLE, /* 89 - No connection available, the
    631                                     session will be queued */
    632   CURLE_SSL_PINNEDPUBKEYNOTMATCH, /* 90 - specified pinned public key did not
    633                                      match */
    634   CURLE_SSL_INVALIDCERTSTATUS,   /* 91 - invalid certificate status */
    635   CURLE_HTTP2_STREAM,            /* 92 - stream error in HTTP/2 framing layer
    636                                     */
    637   CURLE_RECURSIVE_API_CALL,      /* 93 - an api function was called from
    638                                     inside a callback */
    639   CURLE_AUTH_ERROR,              /* 94 - an authentication function returned an
    640                                     error */
    641   CURLE_HTTP3,                   /* 95 - An HTTP/3 layer problem */
    642   CURLE_QUIC_CONNECT_ERROR,      /* 96 - QUIC connection error */
    643   CURLE_PROXY,                   /* 97 - proxy handshake error */
    644   CURLE_SSL_CLIENTCERT,          /* 98 - client-side certificate required */
    645   CURLE_UNRECOVERABLE_POLL,      /* 99 - poll/select returned fatal error */
    646   CURLE_TOO_LARGE,               /* 100 - a value/data met its maximum */
    647   CURLE_ECH_REQUIRED,            /* 101 - ECH tried but failed */
    648   CURL_LAST /* never use! */
    649 } CURLcode;
    650 
    651 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
    652                           the obsolete stuff removed! */
    653 
    654 /* removed in 7.53.0 */
    655 #define CURLE_FUNCTION_NOT_FOUND CURLE_OBSOLETE41
    656 
    657 /* removed in 7.56.0 */
    658 #define CURLE_HTTP_POST_ERROR CURLE_OBSOLETE34
    659 
    660 /* Previously obsolete error code reused in 7.38.0 */
    661 #define CURLE_OBSOLETE16 CURLE_HTTP2
    662 
    663 /* Previously obsolete error codes reused in 7.24.0 */
    664 #define CURLE_OBSOLETE10 CURLE_FTP_ACCEPT_FAILED
    665 #define CURLE_OBSOLETE12 CURLE_FTP_ACCEPT_TIMEOUT
    666 
    667 /*  compatibility with older names */
    668 #define CURLOPT_ENCODING CURLOPT_ACCEPT_ENCODING
    669 #define CURLE_FTP_WEIRD_SERVER_REPLY CURLE_WEIRD_SERVER_REPLY
    670 
    671 /* The following were added in 7.62.0 */
    672 #define CURLE_SSL_CACERT CURLE_PEER_FAILED_VERIFICATION
    673 
    674 /* The following were added in 7.21.5, April 2011 */
    675 #define CURLE_UNKNOWN_TELNET_OPTION CURLE_UNKNOWN_OPTION
    676 
    677 /* Added for 7.78.0 */
    678 #define CURLE_TELNET_OPTION_SYNTAX CURLE_SETOPT_OPTION_SYNTAX
    679 
    680 /* The following were added in 7.17.1 */
    681 /* These are scheduled to disappear by 2009 */
    682 #define CURLE_SSL_PEER_CERTIFICATE CURLE_PEER_FAILED_VERIFICATION
    683 
    684 /* The following were added in 7.17.0 */
    685 /* These are scheduled to disappear by 2009 */
    686 #define CURLE_OBSOLETE CURLE_OBSOLETE50 /* no one should be using this! */
    687 #define CURLE_BAD_PASSWORD_ENTERED CURLE_OBSOLETE46
    688 #define CURLE_BAD_CALLING_ORDER CURLE_OBSOLETE44
    689 #define CURLE_FTP_USER_PASSWORD_INCORRECT CURLE_OBSOLETE10
    690 #define CURLE_FTP_CANT_RECONNECT CURLE_OBSOLETE16
    691 #define CURLE_FTP_COULDNT_GET_SIZE CURLE_OBSOLETE32
    692 #define CURLE_FTP_COULDNT_SET_ASCII CURLE_OBSOLETE29
    693 #define CURLE_FTP_WEIRD_USER_REPLY CURLE_OBSOLETE12
    694 #define CURLE_FTP_WRITE_ERROR CURLE_OBSOLETE20
    695 #define CURLE_LIBRARY_NOT_FOUND CURLE_OBSOLETE40
    696 #define CURLE_MALFORMAT_USER CURLE_OBSOLETE24
    697 #define CURLE_SHARE_IN_USE CURLE_OBSOLETE57
    698 #define CURLE_URL_MALFORMAT_USER CURLE_NOT_BUILT_IN
    699 
    700 #define CURLE_FTP_ACCESS_DENIED CURLE_REMOTE_ACCESS_DENIED
    701 #define CURLE_FTP_COULDNT_SET_BINARY CURLE_FTP_COULDNT_SET_TYPE
    702 #define CURLE_FTP_QUOTE_ERROR CURLE_QUOTE_ERROR
    703 #define CURLE_TFTP_DISKFULL CURLE_REMOTE_DISK_FULL
    704 #define CURLE_TFTP_EXISTS CURLE_REMOTE_FILE_EXISTS
    705 #define CURLE_HTTP_RANGE_ERROR CURLE_RANGE_ERROR
    706 #define CURLE_FTP_SSL_FAILED CURLE_USE_SSL_FAILED
    707 
    708 /* The following were added earlier */
    709 
    710 #define CURLE_OPERATION_TIMEOUTED CURLE_OPERATION_TIMEDOUT
    711 #define CURLE_HTTP_NOT_FOUND CURLE_HTTP_RETURNED_ERROR
    712 #define CURLE_HTTP_PORT_FAILED CURLE_INTERFACE_FAILED
    713 #define CURLE_FTP_COULDNT_STOR_FILE CURLE_UPLOAD_FAILED
    714 #define CURLE_FTP_PARTIAL_FILE CURLE_PARTIAL_FILE
    715 #define CURLE_FTP_BAD_DOWNLOAD_RESUME CURLE_BAD_DOWNLOAD_RESUME
    716 #define CURLE_LDAP_INVALID_URL CURLE_OBSOLETE62
    717 #define CURLE_CONV_REQD CURLE_OBSOLETE76
    718 #define CURLE_CONV_FAILED CURLE_OBSOLETE75
    719 
    720 /* This was the error code 50 in 7.7.3 and a few earlier versions, this
    721    is no longer used by libcurl but is instead #defined here only to not
    722    make programs break */
    723 #define CURLE_ALREADY_COMPLETE 99999
    724 
    725 /* Provide defines for really old option names */
    726 #define CURLOPT_FILE CURLOPT_WRITEDATA /* name changed in 7.9.7 */
    727 #define CURLOPT_INFILE CURLOPT_READDATA /* name changed in 7.9.7 */
    728 #define CURLOPT_WRITEHEADER CURLOPT_HEADERDATA
    729 
    730 /* Since long deprecated options with no code in the lib that does anything
    731    with them. */
    732 #define CURLOPT_WRITEINFO CURLOPT_OBSOLETE40
    733 #define CURLOPT_CLOSEPOLICY CURLOPT_OBSOLETE72
    734 #define CURLOPT_OBSOLETE72 9999
    735 #define CURLOPT_OBSOLETE40 9999
    736 
    737 #endif /* !CURL_NO_OLDIES */
    738 
    739 /*
    740  * Proxy error codes. Returned in CURLINFO_PROXY_ERROR if CURLE_PROXY was
    741  * return for the transfers.
    742  */
    743 typedef enum {
    744   CURLPX_OK,
    745   CURLPX_BAD_ADDRESS_TYPE,
    746   CURLPX_BAD_VERSION,
    747   CURLPX_CLOSED,
    748   CURLPX_GSSAPI,
    749   CURLPX_GSSAPI_PERMSG,
    750   CURLPX_GSSAPI_PROTECTION,
    751   CURLPX_IDENTD,
    752   CURLPX_IDENTD_DIFFER,
    753   CURLPX_LONG_HOSTNAME,
    754   CURLPX_LONG_PASSWD,
    755   CURLPX_LONG_USER,
    756   CURLPX_NO_AUTH,
    757   CURLPX_RECV_ADDRESS,
    758   CURLPX_RECV_AUTH,
    759   CURLPX_RECV_CONNECT,
    760   CURLPX_RECV_REQACK,
    761   CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
    762   CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
    763   CURLPX_REPLY_CONNECTION_REFUSED,
    764   CURLPX_REPLY_GENERAL_SERVER_FAILURE,
    765   CURLPX_REPLY_HOST_UNREACHABLE,
    766   CURLPX_REPLY_NETWORK_UNREACHABLE,
    767   CURLPX_REPLY_NOT_ALLOWED,
    768   CURLPX_REPLY_TTL_EXPIRED,
    769   CURLPX_REPLY_UNASSIGNED,
    770   CURLPX_REQUEST_FAILED,
    771   CURLPX_RESOLVE_HOST,
    772   CURLPX_SEND_AUTH,
    773   CURLPX_SEND_CONNECT,
    774   CURLPX_SEND_REQUEST,
    775   CURLPX_UNKNOWN_FAIL,
    776   CURLPX_UNKNOWN_MODE,
    777   CURLPX_USER_REJECTED,
    778   CURLPX_LAST /* never use */
    779 } CURLproxycode;
    780 
    781 /* This prototype applies to all conversion callbacks */
    782 typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
    783 
    784 typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl,    /* easy handle */
    785                                           void *ssl_ctx, /* actually an OpenSSL
    786                                                             or wolfSSL SSL_CTX,
    787                                                             or an mbedTLS
    788                                                           mbedtls_ssl_config */
    789                                           void *userptr);
    790 
    791 typedef enum {
    792   CURLPROXY_HTTP = 0,   /* added in 7.10, new in 7.19.4 default is to use
    793                            CONNECT HTTP/1.1 */
    794   CURLPROXY_HTTP_1_0 = 1,   /* added in 7.19.4, force to use CONNECT
    795                                HTTP/1.0  */
    796   CURLPROXY_HTTPS = 2,  /* HTTPS but stick to HTTP/1 added in 7.52.0 */
    797   CURLPROXY_HTTPS2 = 3, /* HTTPS and attempt HTTP/2 added in 8.2.0 */
    798   CURLPROXY_SOCKS4 = 4, /* support added in 7.15.2, enum existed already
    799                            in 7.10 */
    800   CURLPROXY_SOCKS5 = 5, /* added in 7.10 */
    801   CURLPROXY_SOCKS4A = 6, /* added in 7.18.0 */
    802   CURLPROXY_SOCKS5_HOSTNAME = 7 /* Use the SOCKS5 protocol but pass along the
    803                                    hostname rather than the IP address. added
    804                                    in 7.18.0 */
    805 } curl_proxytype;  /* this enum was added in 7.10 */
    806 
    807 /*
    808  * Bitmasks for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH options:
    809  *
    810  * CURLAUTH_NONE         - No HTTP authentication
    811  * CURLAUTH_BASIC        - HTTP Basic authentication (default)
    812  * CURLAUTH_DIGEST       - HTTP Digest authentication
    813  * CURLAUTH_NEGOTIATE    - HTTP Negotiate (SPNEGO) authentication
    814  * CURLAUTH_GSSNEGOTIATE - Alias for CURLAUTH_NEGOTIATE (deprecated)
    815  * CURLAUTH_NTLM         - HTTP NTLM authentication
    816  * CURLAUTH_DIGEST_IE    - HTTP Digest authentication with IE flavour
    817  * CURLAUTH_NTLM_WB      - HTTP NTLM authentication delegated to winbind helper
    818  * CURLAUTH_BEARER       - HTTP Bearer token authentication
    819  * CURLAUTH_ONLY         - Use together with a single other type to force no
    820  *                         authentication or just that single type
    821  * CURLAUTH_ANY          - All fine types set
    822  * CURLAUTH_ANYSAFE      - All fine types except Basic
    823  */
    824 
    825 #define CURLAUTH_NONE         ((unsigned long)0)
    826 #define CURLAUTH_BASIC        (((unsigned long)1)<<0)
    827 #define CURLAUTH_DIGEST       (((unsigned long)1)<<1)
    828 #define CURLAUTH_NEGOTIATE    (((unsigned long)1)<<2)
    829 /* Deprecated since the advent of CURLAUTH_NEGOTIATE */
    830 #define CURLAUTH_GSSNEGOTIATE CURLAUTH_NEGOTIATE
    831 /* Used for CURLOPT_SOCKS5_AUTH to stay terminologically correct */
    832 #define CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE
    833 #define CURLAUTH_NTLM         (((unsigned long)1)<<3)
    834 #define CURLAUTH_DIGEST_IE    (((unsigned long)1)<<4)
    835 #ifndef CURL_NO_OLDIES
    836   /* functionality removed since 8.8.0 */
    837 #define CURLAUTH_NTLM_WB      (((unsigned long)1)<<5)
    838 #endif
    839 #define CURLAUTH_BEARER       (((unsigned long)1)<<6)
    840 #define CURLAUTH_AWS_SIGV4    (((unsigned long)1)<<7)
    841 #define CURLAUTH_ONLY         (((unsigned long)1)<<31)
    842 #define CURLAUTH_ANY          (~CURLAUTH_DIGEST_IE)
    843 #define CURLAUTH_ANYSAFE      (~(CURLAUTH_BASIC|CURLAUTH_DIGEST_IE))
    844 
    845 #define CURLSSH_AUTH_ANY       ~0     /* all types supported by the server */
    846 #define CURLSSH_AUTH_NONE      0      /* none allowed, silly but complete */
    847 #define CURLSSH_AUTH_PUBLICKEY (1<<0) /* public/private key files */
    848 #define CURLSSH_AUTH_PASSWORD  (1<<1) /* password */
    849 #define CURLSSH_AUTH_HOST      (1<<2) /* host key files */
    850 #define CURLSSH_AUTH_KEYBOARD  (1<<3) /* keyboard interactive */
    851 #define CURLSSH_AUTH_AGENT     (1<<4) /* agent (ssh-agent, pageant...) */
    852 #define CURLSSH_AUTH_GSSAPI    (1<<5) /* gssapi (kerberos, ...) */
    853 #define CURLSSH_AUTH_DEFAULT CURLSSH_AUTH_ANY
    854 
    855 #define CURLGSSAPI_DELEGATION_NONE        0      /* no delegation (default) */
    856 #define CURLGSSAPI_DELEGATION_POLICY_FLAG (1<<0) /* if permitted by policy */
    857 #define CURLGSSAPI_DELEGATION_FLAG        (1<<1) /* delegate always */
    858 
    859 #define CURL_ERROR_SIZE 256
    860 
    861 enum curl_khtype {
    862   CURLKHTYPE_UNKNOWN,
    863   CURLKHTYPE_RSA1,
    864   CURLKHTYPE_RSA,
    865   CURLKHTYPE_DSS,
    866   CURLKHTYPE_ECDSA,
    867   CURLKHTYPE_ED25519
    868 };
    869 
    870 struct curl_khkey {
    871   const char *key; /* points to a null-terminated string encoded with base64
    872                       if len is zero, otherwise to the "raw" data */
    873   size_t len;
    874   enum curl_khtype keytype;
    875 };
    876 
    877 /* this is the set of return values expected from the curl_sshkeycallback
    878    callback */
    879 enum curl_khstat {
    880   CURLKHSTAT_FINE_ADD_TO_FILE,
    881   CURLKHSTAT_FINE,
    882   CURLKHSTAT_REJECT, /* reject the connection, return an error */
    883   CURLKHSTAT_DEFER,  /* do not accept it, but we cannot answer right now.
    884                         Causes a CURLE_PEER_FAILED_VERIFICATION error but the
    885                         connection will be left intact etc */
    886   CURLKHSTAT_FINE_REPLACE, /* accept and replace the wrong key */
    887   CURLKHSTAT_LAST    /* not for use, only a marker for last-in-list */
    888 };
    889 
    890 /* this is the set of status codes pass in to the callback */
    891 enum curl_khmatch {
    892   CURLKHMATCH_OK,       /* match */
    893   CURLKHMATCH_MISMATCH, /* host found, key mismatch! */
    894   CURLKHMATCH_MISSING,  /* no matching host/key found */
    895   CURLKHMATCH_LAST      /* not for use, only a marker for last-in-list */
    896 };
    897 
    898 typedef int
    899   (*curl_sshkeycallback) (CURL *easy,     /* easy handle */
    900                           const struct curl_khkey *knownkey, /* known */
    901                           const struct curl_khkey *foundkey, /* found */
    902                           enum curl_khmatch, /* libcurl's view on the keys */
    903                           void *clientp); /* custom pointer passed with */
    904                                           /* CURLOPT_SSH_KEYDATA */
    905 
    906 typedef int
    907   (*curl_sshhostkeycallback) (void *clientp,/* custom pointer passed */
    908                                             /* with CURLOPT_SSH_HOSTKEYDATA */
    909                           int keytype, /* CURLKHTYPE */
    910                           const char *key, /* hostkey to check */
    911                           size_t keylen); /* length of the key */
    912                           /* return CURLE_OK to accept */
    913                           /* or something else to refuse */
    914 
    915 
    916 /* parameter for the CURLOPT_USE_SSL option */
    917 #define CURLUSESSL_NONE    0L /* do not attempt to use SSL */
    918 #define CURLUSESSL_TRY     1L /* try using SSL, proceed anyway otherwise */
    919 #define CURLUSESSL_CONTROL 2L /* SSL for the control connection or fail */
    920 #define CURLUSESSL_ALL     3L /* SSL for all communication or fail */
    921 
    922 typedef enum {
    923   CURLUSESSL_LAST = 4 /* not an option, never use */
    924 } curl_usessl;
    925 
    926 /* Definition of bits for the CURLOPT_SSL_OPTIONS argument: */
    927 
    928 /* - ALLOW_BEAST tells libcurl to allow the BEAST SSL vulnerability in the
    929    name of improving interoperability with older servers. Some SSL libraries
    930    have introduced work-arounds for this flaw but those work-arounds sometimes
    931    make the SSL communication fail. To regain functionality with those broken
    932    servers, a user can this way allow the vulnerability back. */
    933 #define CURLSSLOPT_ALLOW_BEAST (1L<<0)
    934 
    935 /* - NO_REVOKE tells libcurl to disable certificate revocation checks for those
    936    SSL backends where such behavior is present. */
    937 #define CURLSSLOPT_NO_REVOKE (1L<<1)
    938 
    939 /* - NO_PARTIALCHAIN tells libcurl to *NOT* accept a partial certificate chain
    940    if possible. The OpenSSL backend has this ability. */
    941 #define CURLSSLOPT_NO_PARTIALCHAIN (1L<<2)
    942 
    943 /* - REVOKE_BEST_EFFORT tells libcurl to ignore certificate revocation offline
    944    checks and ignore missing revocation list for those SSL backends where such
    945    behavior is present. */
    946 #define CURLSSLOPT_REVOKE_BEST_EFFORT (1L<<3)
    947 
    948 /* - CURLSSLOPT_NATIVE_CA tells libcurl to use standard certificate store of
    949    operating system. Currently implemented under MS-Windows. */
    950 #define CURLSSLOPT_NATIVE_CA (1L<<4)
    951 
    952 /* - CURLSSLOPT_AUTO_CLIENT_CERT tells libcurl to automatically locate and use
    953    a client certificate for authentication. (Schannel) */
    954 #define CURLSSLOPT_AUTO_CLIENT_CERT (1L<<5)
    955 
    956 /* If possible, send data using TLS 1.3 early data */
    957 #define CURLSSLOPT_EARLYDATA (1L<<6)
    958 
    959 /* The default connection attempt delay in milliseconds for happy eyeballs.
    960    CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS.3 and happy-eyeballs-timeout-ms.d document
    961    this value, keep them in sync. */
    962 #define CURL_HET_DEFAULT 200L
    963 
    964 /* The default connection upkeep interval in milliseconds. */
    965 #define CURL_UPKEEP_INTERVAL_DEFAULT 60000L
    966 
    967 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
    968                           the obsolete stuff removed! */
    969 
    970 /* Backwards compatibility with older names */
    971 /* These are scheduled to disappear by 2009 */
    972 
    973 #define CURLFTPSSL_NONE CURLUSESSL_NONE
    974 #define CURLFTPSSL_TRY CURLUSESSL_TRY
    975 #define CURLFTPSSL_CONTROL CURLUSESSL_CONTROL
    976 #define CURLFTPSSL_ALL CURLUSESSL_ALL
    977 #define CURLFTPSSL_LAST CURLUSESSL_LAST
    978 #define curl_ftpssl curl_usessl
    979 #endif /* !CURL_NO_OLDIES */
    980 
    981 /* parameter for the CURLOPT_FTP_SSL_CCC option */
    982 typedef enum {
    983   CURLFTPSSL_CCC_NONE,    /* do not send CCC */
    984   CURLFTPSSL_CCC_PASSIVE, /* Let the server initiate the shutdown */
    985   CURLFTPSSL_CCC_ACTIVE,  /* Initiate the shutdown */
    986   CURLFTPSSL_CCC_LAST     /* not an option, never use */
    987 } curl_ftpccc;
    988 
    989 /* parameter for the CURLOPT_FTPSSLAUTH option */
    990 typedef enum {
    991   CURLFTPAUTH_DEFAULT, /* let libcurl decide */
    992   CURLFTPAUTH_SSL,     /* use "AUTH SSL" */
    993   CURLFTPAUTH_TLS,     /* use "AUTH TLS" */
    994   CURLFTPAUTH_LAST /* not an option, never use */
    995 } curl_ftpauth;
    996 
    997 /* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
    998 typedef enum {
    999   CURLFTP_CREATE_DIR_NONE,  /* do NOT create missing dirs! */
   1000   CURLFTP_CREATE_DIR,       /* (FTP/SFTP) if CWD fails, try MKD and then CWD
   1001                                again if MKD succeeded, for SFTP this does
   1002                                similar magic */
   1003   CURLFTP_CREATE_DIR_RETRY, /* (FTP only) if CWD fails, try MKD and then CWD
   1004                                again even if MKD failed! */
   1005   CURLFTP_CREATE_DIR_LAST   /* not an option, never use */
   1006 } curl_ftpcreatedir;
   1007 
   1008 /* parameter for the CURLOPT_FTP_FILEMETHOD option */
   1009 typedef enum {
   1010   CURLFTPMETHOD_DEFAULT,   /* let libcurl pick */
   1011   CURLFTPMETHOD_MULTICWD,  /* single CWD operation for each path part */
   1012   CURLFTPMETHOD_NOCWD,     /* no CWD at all */
   1013   CURLFTPMETHOD_SINGLECWD, /* one CWD to full dir, then work on file */
   1014   CURLFTPMETHOD_LAST       /* not an option, never use */
   1015 } curl_ftpmethod;
   1016 
   1017 /* bitmask defines for CURLOPT_HEADEROPT */
   1018 #define CURLHEADER_UNIFIED  0
   1019 #define CURLHEADER_SEPARATE (1<<0)
   1020 
   1021 /* CURLALTSVC_* are bits for the CURLOPT_ALTSVC_CTRL option */
   1022 #define CURLALTSVC_READONLYFILE (1<<2)
   1023 #define CURLALTSVC_H1           (1<<3)
   1024 #define CURLALTSVC_H2           (1<<4)
   1025 #define CURLALTSVC_H3           (1<<5)
   1026 
   1027 /* bitmask values for CURLOPT_UPLOAD_FLAGS */
   1028 #define CURLULFLAG_ANSWERED (1L<<0)
   1029 #define CURLULFLAG_DELETED  (1L<<1)
   1030 #define CURLULFLAG_DRAFT    (1L<<2)
   1031 #define CURLULFLAG_FLAGGED  (1L<<3)
   1032 #define CURLULFLAG_SEEN     (1L<<4)
   1033 
   1034 struct curl_hstsentry {
   1035   char *name;
   1036   size_t namelen;
   1037   unsigned int includeSubDomains:1;
   1038   char expire[18]; /* YYYYMMDD HH:MM:SS [null-terminated] */
   1039 };
   1040 
   1041 struct curl_index {
   1042   size_t index; /* the provided entry's "index" or count */
   1043   size_t total; /* total number of entries to save */
   1044 };
   1045 
   1046 typedef enum {
   1047   CURLSTS_OK,
   1048   CURLSTS_DONE,
   1049   CURLSTS_FAIL
   1050 } CURLSTScode;
   1051 
   1052 typedef CURLSTScode (*curl_hstsread_callback)(CURL *easy,
   1053                                               struct curl_hstsentry *e,
   1054                                               void *userp);
   1055 typedef CURLSTScode (*curl_hstswrite_callback)(CURL *easy,
   1056                                                struct curl_hstsentry *e,
   1057                                                struct curl_index *i,
   1058                                                void *userp);
   1059 
   1060 /* CURLHSTS_* are bits for the CURLOPT_HSTS option */
   1061 #define CURLHSTS_ENABLE       (long)(1<<0)
   1062 #define CURLHSTS_READONLYFILE (long)(1<<1)
   1063 
   1064 /* The CURLPROTO_ defines below are for the **deprecated** CURLOPT_*PROTOCOLS
   1065    options. Do not use. */
   1066 #define CURLPROTO_HTTP   (1<<0)
   1067 #define CURLPROTO_HTTPS  (1<<1)
   1068 #define CURLPROTO_FTP    (1<<2)
   1069 #define CURLPROTO_FTPS   (1<<3)
   1070 #define CURLPROTO_SCP    (1<<4)
   1071 #define CURLPROTO_SFTP   (1<<5)
   1072 #define CURLPROTO_TELNET (1<<6)
   1073 #define CURLPROTO_LDAP   (1<<7)
   1074 #define CURLPROTO_LDAPS  (1<<8)
   1075 #define CURLPROTO_DICT   (1<<9)
   1076 #define CURLPROTO_FILE   (1<<10)
   1077 #define CURLPROTO_TFTP   (1<<11)
   1078 #define CURLPROTO_IMAP   (1<<12)
   1079 #define CURLPROTO_IMAPS  (1<<13)
   1080 #define CURLPROTO_POP3   (1<<14)
   1081 #define CURLPROTO_POP3S  (1<<15)
   1082 #define CURLPROTO_SMTP   (1<<16)
   1083 #define CURLPROTO_SMTPS  (1<<17)
   1084 #define CURLPROTO_RTSP   (1<<18)
   1085 #define CURLPROTO_RTMP   (1<<19)
   1086 #define CURLPROTO_RTMPT  (1<<20)
   1087 #define CURLPROTO_RTMPE  (1<<21)
   1088 #define CURLPROTO_RTMPTE (1<<22)
   1089 #define CURLPROTO_RTMPS  (1<<23)
   1090 #define CURLPROTO_RTMPTS (1<<24)
   1091 #define CURLPROTO_GOPHER (1<<25)
   1092 #define CURLPROTO_SMB    (1<<26)
   1093 #define CURLPROTO_SMBS   (1<<27)
   1094 #define CURLPROTO_MQTT   (1<<28)
   1095 #define CURLPROTO_GOPHERS (1<<29)
   1096 #define CURLPROTO_ALL    (~0) /* enable everything */
   1097 
   1098 /* long may be 32 or 64 bits, but we should never depend on anything else
   1099    but 32 */
   1100 #define CURLOPTTYPE_LONG          0
   1101 #define CURLOPTTYPE_OBJECTPOINT   10000
   1102 #define CURLOPTTYPE_FUNCTIONPOINT 20000
   1103 #define CURLOPTTYPE_OFF_T         30000
   1104 #define CURLOPTTYPE_BLOB          40000
   1105 
   1106 /* *STRINGPOINT is an alias for OBJECTPOINT to allow tools to extract the
   1107    string options from the header file */
   1108 
   1109 
   1110 #define CURLOPT(na,t,nu) na = t + nu
   1111 #define CURLOPTDEPRECATED(na,t,nu,v,m) na CURL_DEPRECATED(v,m) = t + nu
   1112 
   1113 /* CURLOPT aliases that make no runtime difference */
   1114 
   1115 /* 'char *' argument to a string with a trailing zero */
   1116 #define CURLOPTTYPE_STRINGPOINT CURLOPTTYPE_OBJECTPOINT
   1117 
   1118 /* 'struct curl_slist *' argument */
   1119 #define CURLOPTTYPE_SLISTPOINT  CURLOPTTYPE_OBJECTPOINT
   1120 
   1121 /* 'void *' argument passed untouched to callback */
   1122 #define CURLOPTTYPE_CBPOINT     CURLOPTTYPE_OBJECTPOINT
   1123 
   1124 /* 'long' argument with a set of values/bitmask */
   1125 #define CURLOPTTYPE_VALUES      CURLOPTTYPE_LONG
   1126 
   1127 /*
   1128  * All CURLOPT_* values.
   1129  */
   1130 
   1131 typedef enum {
   1132   /* This is the FILE * or void * the regular output should be written to. */
   1133   CURLOPT(CURLOPT_WRITEDATA, CURLOPTTYPE_CBPOINT, 1),
   1134 
   1135   /* The full URL to get/put */
   1136   CURLOPT(CURLOPT_URL, CURLOPTTYPE_STRINGPOINT, 2),
   1137 
   1138   /* Port number to connect to, if other than default. */
   1139   CURLOPT(CURLOPT_PORT, CURLOPTTYPE_LONG, 3),
   1140 
   1141   /* Name of proxy to use. */
   1142   CURLOPT(CURLOPT_PROXY, CURLOPTTYPE_STRINGPOINT, 4),
   1143 
   1144   /* "user:password;options" to use when fetching. */
   1145   CURLOPT(CURLOPT_USERPWD, CURLOPTTYPE_STRINGPOINT, 5),
   1146 
   1147   /* "user:password" to use with proxy. */
   1148   CURLOPT(CURLOPT_PROXYUSERPWD, CURLOPTTYPE_STRINGPOINT, 6),
   1149 
   1150   /* Range to get, specified as an ASCII string. */
   1151   CURLOPT(CURLOPT_RANGE, CURLOPTTYPE_STRINGPOINT, 7),
   1152 
   1153   /* not used */
   1154 
   1155   /* Specified file stream to upload from (use as input): */
   1156   CURLOPT(CURLOPT_READDATA, CURLOPTTYPE_CBPOINT, 9),
   1157 
   1158   /* Buffer to receive error messages in, must be at least CURL_ERROR_SIZE
   1159    * bytes big. */
   1160   CURLOPT(CURLOPT_ERRORBUFFER, CURLOPTTYPE_OBJECTPOINT, 10),
   1161 
   1162   /* Function that will be called to store the output (instead of fwrite). The
   1163    * parameters will use fwrite() syntax, make sure to follow them. */
   1164   CURLOPT(CURLOPT_WRITEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 11),
   1165 
   1166   /* Function that will be called to read the input (instead of fread). The
   1167    * parameters will use fread() syntax, make sure to follow them. */
   1168   CURLOPT(CURLOPT_READFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 12),
   1169 
   1170   /* Time-out the read operation after this amount of seconds */
   1171   CURLOPT(CURLOPT_TIMEOUT, CURLOPTTYPE_LONG, 13),
   1172 
   1173   /* If CURLOPT_READDATA is used, this can be used to inform libcurl about
   1174    * how large the file being sent really is. That allows better error
   1175    * checking and better verifies that the upload was successful. -1 means
   1176    * unknown size.
   1177    *
   1178    * For large file support, there is also a _LARGE version of the key
   1179    * which takes an off_t type, allowing platforms with larger off_t
   1180    * sizes to handle larger files. See below for INFILESIZE_LARGE.
   1181    */
   1182   CURLOPT(CURLOPT_INFILESIZE, CURLOPTTYPE_LONG, 14),
   1183 
   1184   /* POST static input fields. */
   1185   CURLOPT(CURLOPT_POSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 15),
   1186 
   1187   /* Set the referrer page (needed by some CGIs) */
   1188   CURLOPT(CURLOPT_REFERER, CURLOPTTYPE_STRINGPOINT, 16),
   1189 
   1190   /* Set the FTP PORT string (interface name, named or numerical IP address)
   1191      Use i.e '-' to use default address. */
   1192   CURLOPT(CURLOPT_FTPPORT, CURLOPTTYPE_STRINGPOINT, 17),
   1193 
   1194   /* Set the User-Agent string (examined by some CGIs) */
   1195   CURLOPT(CURLOPT_USERAGENT, CURLOPTTYPE_STRINGPOINT, 18),
   1196 
   1197   /* If the download receives less than "low speed limit" bytes/second
   1198    * during "low speed time" seconds, the operations is aborted.
   1199    * You could i.e if you have a pretty high speed connection, abort if
   1200    * it is less than 2000 bytes/sec during 20 seconds.
   1201    */
   1202 
   1203   /* Set the "low speed limit" */
   1204   CURLOPT(CURLOPT_LOW_SPEED_LIMIT, CURLOPTTYPE_LONG, 19),
   1205 
   1206   /* Set the "low speed time" */
   1207   CURLOPT(CURLOPT_LOW_SPEED_TIME, CURLOPTTYPE_LONG, 20),
   1208 
   1209   /* Set the continuation offset.
   1210    *
   1211    * Note there is also a _LARGE version of this key which uses
   1212    * off_t types, allowing for large file offsets on platforms which
   1213    * use larger-than-32-bit off_t's. Look below for RESUME_FROM_LARGE.
   1214    */
   1215   CURLOPT(CURLOPT_RESUME_FROM, CURLOPTTYPE_LONG, 21),
   1216 
   1217   /* Set cookie in request: */
   1218   CURLOPT(CURLOPT_COOKIE, CURLOPTTYPE_STRINGPOINT, 22),
   1219 
   1220   /* This points to a linked list of headers, struct curl_slist kind. This
   1221      list is also used for RTSP (in spite of its name) */
   1222   CURLOPT(CURLOPT_HTTPHEADER, CURLOPTTYPE_SLISTPOINT, 23),
   1223 
   1224   /* This points to a linked list of post entries, struct curl_httppost */
   1225   CURLOPTDEPRECATED(CURLOPT_HTTPPOST, CURLOPTTYPE_OBJECTPOINT, 24,
   1226                     7.56.0, "Use CURLOPT_MIMEPOST"),
   1227 
   1228   /* name of the file keeping your private SSL-certificate */
   1229   CURLOPT(CURLOPT_SSLCERT, CURLOPTTYPE_STRINGPOINT, 25),
   1230 
   1231   /* password for the SSL or SSH private key */
   1232   CURLOPT(CURLOPT_KEYPASSWD, CURLOPTTYPE_STRINGPOINT, 26),
   1233 
   1234   /* send TYPE parameter? */
   1235   CURLOPT(CURLOPT_CRLF, CURLOPTTYPE_LONG, 27),
   1236 
   1237   /* send linked-list of QUOTE commands */
   1238   CURLOPT(CURLOPT_QUOTE, CURLOPTTYPE_SLISTPOINT, 28),
   1239 
   1240   /* send FILE * or void * to store headers to, if you use a callback it
   1241      is simply passed to the callback unmodified */
   1242   CURLOPT(CURLOPT_HEADERDATA, CURLOPTTYPE_CBPOINT, 29),
   1243 
   1244   /* point to a file to read the initial cookies from, also enables
   1245      "cookie awareness" */
   1246   CURLOPT(CURLOPT_COOKIEFILE, CURLOPTTYPE_STRINGPOINT, 31),
   1247 
   1248   /* What version to specifically try to use.
   1249      See CURL_SSLVERSION defines below. */
   1250   CURLOPT(CURLOPT_SSLVERSION, CURLOPTTYPE_VALUES, 32),
   1251 
   1252   /* What kind of HTTP time condition to use, see defines */
   1253   CURLOPT(CURLOPT_TIMECONDITION, CURLOPTTYPE_VALUES, 33),
   1254 
   1255   /* Time to use with the above condition. Specified in number of seconds
   1256      since 1 Jan 1970 */
   1257   CURLOPT(CURLOPT_TIMEVALUE, CURLOPTTYPE_LONG, 34),
   1258 
   1259   /* 35 = OBSOLETE */
   1260 
   1261   /* Custom request, for customizing the get command like
   1262      HTTP: DELETE, TRACE and others
   1263      FTP: to use a different list command
   1264      */
   1265   CURLOPT(CURLOPT_CUSTOMREQUEST, CURLOPTTYPE_STRINGPOINT, 36),
   1266 
   1267   /* FILE handle to use instead of stderr */
   1268   CURLOPT(CURLOPT_STDERR, CURLOPTTYPE_OBJECTPOINT, 37),
   1269 
   1270   /* 38 is not used */
   1271 
   1272   /* send linked-list of post-transfer QUOTE commands */
   1273   CURLOPT(CURLOPT_POSTQUOTE, CURLOPTTYPE_SLISTPOINT, 39),
   1274 
   1275   /* 40 is not used */
   1276 
   1277   /* talk a lot */
   1278   CURLOPT(CURLOPT_VERBOSE, CURLOPTTYPE_LONG, 41),
   1279 
   1280   /* throw the header out too */
   1281   CURLOPT(CURLOPT_HEADER, CURLOPTTYPE_LONG, 42),
   1282 
   1283   /* shut off the progress meter */
   1284   CURLOPT(CURLOPT_NOPROGRESS, CURLOPTTYPE_LONG, 43),
   1285 
   1286   /* use HEAD to get http document */
   1287   CURLOPT(CURLOPT_NOBODY, CURLOPTTYPE_LONG, 44),
   1288 
   1289   /* no output on http error codes >= 400 */
   1290   CURLOPT(CURLOPT_FAILONERROR, CURLOPTTYPE_LONG, 45),
   1291 
   1292   /* this is an upload */
   1293   CURLOPT(CURLOPT_UPLOAD, CURLOPTTYPE_LONG, 46),
   1294 
   1295   /* HTTP POST method */
   1296   CURLOPT(CURLOPT_POST, CURLOPTTYPE_LONG, 47),
   1297 
   1298   /* bare names when listing directories */
   1299   CURLOPT(CURLOPT_DIRLISTONLY, CURLOPTTYPE_LONG, 48),
   1300 
   1301   /* Append instead of overwrite on upload! */
   1302   CURLOPT(CURLOPT_APPEND, CURLOPTTYPE_LONG, 50),
   1303 
   1304   /* Specify whether to read the user+password from the .netrc or the URL.
   1305    * This must be one of the CURL_NETRC_* enums below. */
   1306   CURLOPT(CURLOPT_NETRC, CURLOPTTYPE_VALUES, 51),
   1307 
   1308   /* use Location: Luke! */
   1309   CURLOPT(CURLOPT_FOLLOWLOCATION, CURLOPTTYPE_LONG, 52),
   1310 
   1311    /* transfer data in text/ASCII format */
   1312   CURLOPT(CURLOPT_TRANSFERTEXT, CURLOPTTYPE_LONG, 53),
   1313 
   1314   /* HTTP PUT */
   1315   CURLOPTDEPRECATED(CURLOPT_PUT, CURLOPTTYPE_LONG, 54,
   1316                     7.12.1, "Use CURLOPT_UPLOAD"),
   1317 
   1318   /* 55 = OBSOLETE */
   1319 
   1320   /* DEPRECATED
   1321    * Function that will be called instead of the internal progress display
   1322    * function. This function should be defined as the curl_progress_callback
   1323    * prototype defines. */
   1324   CURLOPTDEPRECATED(CURLOPT_PROGRESSFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 56,
   1325                     7.32.0, "Use CURLOPT_XFERINFOFUNCTION"),
   1326 
   1327   /* Data passed to the CURLOPT_PROGRESSFUNCTION and CURLOPT_XFERINFOFUNCTION
   1328      callbacks */
   1329   CURLOPT(CURLOPT_XFERINFODATA, CURLOPTTYPE_CBPOINT, 57),
   1330 #define CURLOPT_PROGRESSDATA CURLOPT_XFERINFODATA
   1331 
   1332   /* We want the referrer field set automatically when following locations */
   1333   CURLOPT(CURLOPT_AUTOREFERER, CURLOPTTYPE_LONG, 58),
   1334 
   1335   /* Port of the proxy, can be set in the proxy string as well with:
   1336      "[host]:[port]" */
   1337   CURLOPT(CURLOPT_PROXYPORT, CURLOPTTYPE_LONG, 59),
   1338 
   1339   /* size of the POST input data, if strlen() is not good to use */
   1340   CURLOPT(CURLOPT_POSTFIELDSIZE, CURLOPTTYPE_LONG, 60),
   1341 
   1342   /* tunnel non-http operations through an HTTP proxy */
   1343   CURLOPT(CURLOPT_HTTPPROXYTUNNEL, CURLOPTTYPE_LONG, 61),
   1344 
   1345   /* Set the interface string to use as outgoing network interface */
   1346   CURLOPT(CURLOPT_INTERFACE, CURLOPTTYPE_STRINGPOINT, 62),
   1347 
   1348   /* Set the krb4/5 security level, this also enables krb4/5 awareness. This
   1349    * is a string, 'clear', 'safe', 'confidential' or 'private'. If the string
   1350    * is set but does not match one of these, 'private' will be used.  */
   1351   CURLOPT(CURLOPT_KRBLEVEL, CURLOPTTYPE_STRINGPOINT, 63),
   1352 
   1353   /* Set if we should verify the peer in ssl handshake, set 1 to verify. */
   1354   CURLOPT(CURLOPT_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 64),
   1355 
   1356   /* The CApath or CAfile used to validate the peer certificate
   1357      this option is used only if SSL_VERIFYPEER is true */
   1358   CURLOPT(CURLOPT_CAINFO, CURLOPTTYPE_STRINGPOINT, 65),
   1359 
   1360   /* 66 = OBSOLETE */
   1361   /* 67 = OBSOLETE */
   1362 
   1363   /* Maximum number of http redirects to follow */
   1364   CURLOPT(CURLOPT_MAXREDIRS, CURLOPTTYPE_LONG, 68),
   1365 
   1366   /* Pass a long set to 1 to get the date of the requested document (if
   1367      possible)! Pass a zero to shut it off. */
   1368   CURLOPT(CURLOPT_FILETIME, CURLOPTTYPE_LONG, 69),
   1369 
   1370   /* This points to a linked list of telnet options */
   1371   CURLOPT(CURLOPT_TELNETOPTIONS, CURLOPTTYPE_SLISTPOINT, 70),
   1372 
   1373   /* Max amount of cached alive connections */
   1374   CURLOPT(CURLOPT_MAXCONNECTS, CURLOPTTYPE_LONG, 71),
   1375 
   1376   /* 72 = OBSOLETE */
   1377   /* 73 = OBSOLETE */
   1378 
   1379   /* Set to explicitly use a new connection for the upcoming transfer.
   1380      Do not use this unless you are absolutely sure of this, as it makes the
   1381      operation slower and is less friendly for the network. */
   1382   CURLOPT(CURLOPT_FRESH_CONNECT, CURLOPTTYPE_LONG, 74),
   1383 
   1384   /* Set to explicitly forbid the upcoming transfer's connection to be reused
   1385      when done. Do not use this unless you are absolutely sure of this, as it
   1386      makes the operation slower and is less friendly for the network. */
   1387   CURLOPT(CURLOPT_FORBID_REUSE, CURLOPTTYPE_LONG, 75),
   1388 
   1389   /* Set to a filename that contains random data for libcurl to use to
   1390      seed the random engine when doing SSL connects. */
   1391   CURLOPTDEPRECATED(CURLOPT_RANDOM_FILE, CURLOPTTYPE_STRINGPOINT, 76,
   1392                     7.84.0, "Serves no purpose anymore"),
   1393 
   1394   /* Set to the Entropy Gathering Daemon socket pathname */
   1395   CURLOPTDEPRECATED(CURLOPT_EGDSOCKET, CURLOPTTYPE_STRINGPOINT, 77,
   1396                     7.84.0, "Serves no purpose anymore"),
   1397 
   1398   /* Time-out connect operations after this amount of seconds, if connects are
   1399      OK within this time, then fine... This only aborts the connect phase. */
   1400   CURLOPT(CURLOPT_CONNECTTIMEOUT, CURLOPTTYPE_LONG, 78),
   1401 
   1402   /* Function that will be called to store headers (instead of fwrite). The
   1403    * parameters will use fwrite() syntax, make sure to follow them. */
   1404   CURLOPT(CURLOPT_HEADERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 79),
   1405 
   1406   /* Set this to force the HTTP request to get back to GET. Only really usable
   1407      if POST, PUT or a custom request have been used first.
   1408    */
   1409   CURLOPT(CURLOPT_HTTPGET, CURLOPTTYPE_LONG, 80),
   1410 
   1411   /* Set if we should verify the Common name from the peer certificate in ssl
   1412    * handshake, set 1 to check existence, 2 to ensure that it matches the
   1413    * provided hostname. */
   1414   CURLOPT(CURLOPT_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 81),
   1415 
   1416   /* Specify which filename to write all known cookies in after completed
   1417      operation. Set filename to "-" (dash) to make it go to stdout. */
   1418   CURLOPT(CURLOPT_COOKIEJAR, CURLOPTTYPE_STRINGPOINT, 82),
   1419 
   1420   /* Specify which TLS 1.2 (1.1, 1.0) ciphers to use */
   1421   CURLOPT(CURLOPT_SSL_CIPHER_LIST, CURLOPTTYPE_STRINGPOINT, 83),
   1422 
   1423   /* Specify which HTTP version to use! This must be set to one of the
   1424      CURL_HTTP_VERSION* enums set below. */
   1425   CURLOPT(CURLOPT_HTTP_VERSION, CURLOPTTYPE_VALUES, 84),
   1426 
   1427   /* Specifically switch on or off the FTP engine's use of the EPSV command. By
   1428      default, that one will always be attempted before the more traditional
   1429      PASV command. */
   1430   CURLOPT(CURLOPT_FTP_USE_EPSV, CURLOPTTYPE_LONG, 85),
   1431 
   1432   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") */
   1433   CURLOPT(CURLOPT_SSLCERTTYPE, CURLOPTTYPE_STRINGPOINT, 86),
   1434 
   1435   /* name of the file keeping your private SSL-key */
   1436   CURLOPT(CURLOPT_SSLKEY, CURLOPTTYPE_STRINGPOINT, 87),
   1437 
   1438   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") */
   1439   CURLOPT(CURLOPT_SSLKEYTYPE, CURLOPTTYPE_STRINGPOINT, 88),
   1440 
   1441   /* crypto engine for the SSL-sub system */
   1442   CURLOPT(CURLOPT_SSLENGINE, CURLOPTTYPE_STRINGPOINT, 89),
   1443 
   1444   /* set the crypto engine for the SSL-sub system as default
   1445      the param has no meaning...
   1446    */
   1447   CURLOPT(CURLOPT_SSLENGINE_DEFAULT, CURLOPTTYPE_LONG, 90),
   1448 
   1449   /* Non-zero value means to use the global dns cache */
   1450   /* DEPRECATED, do not use! */
   1451   CURLOPTDEPRECATED(CURLOPT_DNS_USE_GLOBAL_CACHE, CURLOPTTYPE_LONG, 91,
   1452                     7.11.1, "Use CURLOPT_SHARE"),
   1453 
   1454   /* DNS cache timeout */
   1455   CURLOPT(CURLOPT_DNS_CACHE_TIMEOUT, CURLOPTTYPE_LONG, 92),
   1456 
   1457   /* send linked-list of pre-transfer QUOTE commands */
   1458   CURLOPT(CURLOPT_PREQUOTE, CURLOPTTYPE_SLISTPOINT, 93),
   1459 
   1460   /* set the debug function */
   1461   CURLOPT(CURLOPT_DEBUGFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 94),
   1462 
   1463   /* set the data for the debug function */
   1464   CURLOPT(CURLOPT_DEBUGDATA, CURLOPTTYPE_CBPOINT, 95),
   1465 
   1466   /* mark this as start of a cookie session */
   1467   CURLOPT(CURLOPT_COOKIESESSION, CURLOPTTYPE_LONG, 96),
   1468 
   1469   /* The CApath directory used to validate the peer certificate
   1470      this option is used only if SSL_VERIFYPEER is true */
   1471   CURLOPT(CURLOPT_CAPATH, CURLOPTTYPE_STRINGPOINT, 97),
   1472 
   1473   /* Instruct libcurl to use a smaller receive buffer */
   1474   CURLOPT(CURLOPT_BUFFERSIZE, CURLOPTTYPE_LONG, 98),
   1475 
   1476   /* Instruct libcurl to not use any signal/alarm handlers, even when using
   1477      timeouts. This option is useful for multi-threaded applications.
   1478      See libcurl-the-guide for more background information. */
   1479   CURLOPT(CURLOPT_NOSIGNAL, CURLOPTTYPE_LONG, 99),
   1480 
   1481   /* Provide a CURLShare for mutexing non-ts data */
   1482   CURLOPT(CURLOPT_SHARE, CURLOPTTYPE_OBJECTPOINT, 100),
   1483 
   1484   /* indicates type of proxy. accepted values are CURLPROXY_HTTP (default),
   1485      CURLPROXY_HTTPS, CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and
   1486      CURLPROXY_SOCKS5. */
   1487   CURLOPT(CURLOPT_PROXYTYPE, CURLOPTTYPE_VALUES, 101),
   1488 
   1489   /* Set the Accept-Encoding string. Use this to tell a server you would like
   1490      the response to be compressed. Before 7.21.6, this was known as
   1491      CURLOPT_ENCODING */
   1492   CURLOPT(CURLOPT_ACCEPT_ENCODING, CURLOPTTYPE_STRINGPOINT, 102),
   1493 
   1494   /* Set pointer to private data */
   1495   CURLOPT(CURLOPT_PRIVATE, CURLOPTTYPE_OBJECTPOINT, 103),
   1496 
   1497   /* Set aliases for HTTP 200 in the HTTP Response header */
   1498   CURLOPT(CURLOPT_HTTP200ALIASES, CURLOPTTYPE_SLISTPOINT, 104),
   1499 
   1500   /* Continue to send authentication (user+password) when following locations,
   1501      even when hostname changed. This can potentially send off the name
   1502      and password to whatever host the server decides. */
   1503   CURLOPT(CURLOPT_UNRESTRICTED_AUTH, CURLOPTTYPE_LONG, 105),
   1504 
   1505   /* Specifically switch on or off the FTP engine's use of the EPRT command (
   1506      it also disables the LPRT attempt). By default, those ones will always be
   1507      attempted before the good old traditional PORT command. */
   1508   CURLOPT(CURLOPT_FTP_USE_EPRT, CURLOPTTYPE_LONG, 106),
   1509 
   1510   /* Set this to a bitmask value to enable the particular authentications
   1511      methods you like. Use this in combination with CURLOPT_USERPWD.
   1512      Note that setting multiple bits may cause extra network round-trips. */
   1513   CURLOPT(CURLOPT_HTTPAUTH, CURLOPTTYPE_VALUES, 107),
   1514 
   1515   /* Set the ssl context callback function, currently only for OpenSSL or
   1516      wolfSSL ssl_ctx, or mbedTLS mbedtls_ssl_config in the second argument.
   1517      The function must match the curl_ssl_ctx_callback prototype. */
   1518   CURLOPT(CURLOPT_SSL_CTX_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 108),
   1519 
   1520   /* Set the userdata for the ssl context callback function's third
   1521      argument */
   1522   CURLOPT(CURLOPT_SSL_CTX_DATA, CURLOPTTYPE_CBPOINT, 109),
   1523 
   1524   /* FTP Option that causes missing dirs to be created on the remote server.
   1525      In 7.19.4 we introduced the convenience enums for this option using the
   1526      CURLFTP_CREATE_DIR prefix.
   1527   */
   1528   CURLOPT(CURLOPT_FTP_CREATE_MISSING_DIRS, CURLOPTTYPE_LONG, 110),
   1529 
   1530   /* Set this to a bitmask value to enable the particular authentications
   1531      methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
   1532      Note that setting multiple bits may cause extra network round-trips. */
   1533   CURLOPT(CURLOPT_PROXYAUTH, CURLOPTTYPE_VALUES, 111),
   1534 
   1535   /* Option that changes the timeout, in seconds, associated with getting a
   1536      response. This is different from transfer timeout time and essentially
   1537      places a demand on the server to acknowledge commands in a timely
   1538      manner. For FTP, SMTP, IMAP and POP3. */
   1539   CURLOPT(CURLOPT_SERVER_RESPONSE_TIMEOUT, CURLOPTTYPE_LONG, 112),
   1540 
   1541   /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
   1542      tell libcurl to use those IP versions only. This only has effect on
   1543      systems with support for more than one, i.e IPv4 _and_ IPv6. */
   1544   CURLOPT(CURLOPT_IPRESOLVE, CURLOPTTYPE_VALUES, 113),
   1545 
   1546   /* Set this option to limit the size of a file that will be downloaded from
   1547      an HTTP or FTP server.
   1548 
   1549      Note there is also _LARGE version which adds large file support for
   1550      platforms which have larger off_t sizes. See MAXFILESIZE_LARGE below. */
   1551   CURLOPT(CURLOPT_MAXFILESIZE, CURLOPTTYPE_LONG, 114),
   1552 
   1553   /* See the comment for INFILESIZE above, but in short, specifies
   1554    * the size of the file being uploaded.  -1 means unknown.
   1555    */
   1556   CURLOPT(CURLOPT_INFILESIZE_LARGE, CURLOPTTYPE_OFF_T, 115),
   1557 
   1558   /* Sets the continuation offset. There is also a CURLOPTTYPE_LONG version
   1559    * of this; look above for RESUME_FROM.
   1560    */
   1561   CURLOPT(CURLOPT_RESUME_FROM_LARGE, CURLOPTTYPE_OFF_T, 116),
   1562 
   1563   /* Sets the maximum size of data that will be downloaded from
   1564    * an HTTP or FTP server. See MAXFILESIZE above for the LONG version.
   1565    */
   1566   CURLOPT(CURLOPT_MAXFILESIZE_LARGE, CURLOPTTYPE_OFF_T, 117),
   1567 
   1568   /* Set this option to the filename of your .netrc file you want libcurl
   1569      to parse (using the CURLOPT_NETRC option). If not set, libcurl will do
   1570      a poor attempt to find the user's home directory and check for a .netrc
   1571      file in there. */
   1572   CURLOPT(CURLOPT_NETRC_FILE, CURLOPTTYPE_STRINGPOINT, 118),
   1573 
   1574   /* Enable SSL/TLS for FTP, pick one of:
   1575      CURLUSESSL_TRY     - try using SSL, proceed anyway otherwise
   1576      CURLUSESSL_CONTROL - SSL for the control connection or fail
   1577      CURLUSESSL_ALL     - SSL for all communication or fail
   1578   */
   1579   CURLOPT(CURLOPT_USE_SSL, CURLOPTTYPE_VALUES, 119),
   1580 
   1581   /* The _LARGE version of the standard POSTFIELDSIZE option */
   1582   CURLOPT(CURLOPT_POSTFIELDSIZE_LARGE, CURLOPTTYPE_OFF_T, 120),
   1583 
   1584   /* Enable/disable the TCP Nagle algorithm */
   1585   CURLOPT(CURLOPT_TCP_NODELAY, CURLOPTTYPE_LONG, 121),
   1586 
   1587   /* 122 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
   1588   /* 123 OBSOLETE. Gone in 7.16.0 */
   1589   /* 124 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
   1590   /* 125 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
   1591   /* 126 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
   1592   /* 127 OBSOLETE. Gone in 7.16.0 */
   1593   /* 128 OBSOLETE. Gone in 7.16.0 */
   1594 
   1595   /* When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option
   1596      can be used to change libcurl's default action which is to first try
   1597      "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK
   1598      response has been received.
   1599 
   1600      Available parameters are:
   1601      CURLFTPAUTH_DEFAULT - let libcurl decide
   1602      CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
   1603      CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
   1604   */
   1605   CURLOPT(CURLOPT_FTPSSLAUTH, CURLOPTTYPE_VALUES, 129),
   1606 
   1607   CURLOPTDEPRECATED(CURLOPT_IOCTLFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 130,
   1608                     7.18.0, "Use CURLOPT_SEEKFUNCTION"),
   1609   CURLOPTDEPRECATED(CURLOPT_IOCTLDATA, CURLOPTTYPE_CBPOINT, 131,
   1610                     7.18.0, "Use CURLOPT_SEEKDATA"),
   1611 
   1612   /* 132 OBSOLETE. Gone in 7.16.0 */
   1613   /* 133 OBSOLETE. Gone in 7.16.0 */
   1614 
   1615   /* null-terminated string for pass on to the FTP server when asked for
   1616      "account" info */
   1617   CURLOPT(CURLOPT_FTP_ACCOUNT, CURLOPTTYPE_STRINGPOINT, 134),
   1618 
   1619   /* feed cookie into cookie engine */
   1620   CURLOPT(CURLOPT_COOKIELIST, CURLOPTTYPE_STRINGPOINT, 135),
   1621 
   1622   /* ignore Content-Length */
   1623   CURLOPT(CURLOPT_IGNORE_CONTENT_LENGTH, CURLOPTTYPE_LONG, 136),
   1624 
   1625   /* Set to non-zero to skip the IP address received in a 227 PASV FTP server
   1626      response. Typically used for FTP-SSL purposes but is not restricted to
   1627      that. libcurl will then instead use the same IP address it used for the
   1628      control connection. */
   1629   CURLOPT(CURLOPT_FTP_SKIP_PASV_IP, CURLOPTTYPE_LONG, 137),
   1630 
   1631   /* Select "file method" to use when doing FTP, see the curl_ftpmethod
   1632      above. */
   1633   CURLOPT(CURLOPT_FTP_FILEMETHOD, CURLOPTTYPE_VALUES, 138),
   1634 
   1635   /* Local port number to bind the socket to */
   1636   CURLOPT(CURLOPT_LOCALPORT, CURLOPTTYPE_LONG, 139),
   1637 
   1638   /* Number of ports to try, including the first one set with LOCALPORT.
   1639      Thus, setting it to 1 will make no additional attempts but the first.
   1640   */
   1641   CURLOPT(CURLOPT_LOCALPORTRANGE, CURLOPTTYPE_LONG, 140),
   1642 
   1643   /* no transfer, set up connection and let application use the socket by
   1644      extracting it with CURLINFO_LASTSOCKET */
   1645   CURLOPT(CURLOPT_CONNECT_ONLY, CURLOPTTYPE_LONG, 141),
   1646 
   1647   /* Function that will be called to convert from the
   1648      network encoding (instead of using the iconv calls in libcurl) */
   1649   CURLOPTDEPRECATED(CURLOPT_CONV_FROM_NETWORK_FUNCTION,
   1650                     CURLOPTTYPE_FUNCTIONPOINT, 142,
   1651                     7.82.0, "Serves no purpose anymore"),
   1652 
   1653   /* Function that will be called to convert to the
   1654      network encoding (instead of using the iconv calls in libcurl) */
   1655   CURLOPTDEPRECATED(CURLOPT_CONV_TO_NETWORK_FUNCTION,
   1656                     CURLOPTTYPE_FUNCTIONPOINT, 143,
   1657                     7.82.0, "Serves no purpose anymore"),
   1658 
   1659   /* Function that will be called to convert from UTF8
   1660      (instead of using the iconv calls in libcurl)
   1661      Note that this is used only for SSL certificate processing */
   1662   CURLOPTDEPRECATED(CURLOPT_CONV_FROM_UTF8_FUNCTION,
   1663                     CURLOPTTYPE_FUNCTIONPOINT, 144,
   1664                     7.82.0, "Serves no purpose anymore"),
   1665 
   1666   /* if the connection proceeds too quickly then need to slow it down */
   1667   /* limit-rate: maximum number of bytes per second to send or receive */
   1668   CURLOPT(CURLOPT_MAX_SEND_SPEED_LARGE, CURLOPTTYPE_OFF_T, 145),
   1669   CURLOPT(CURLOPT_MAX_RECV_SPEED_LARGE, CURLOPTTYPE_OFF_T, 146),
   1670 
   1671   /* Pointer to command string to send if USER/PASS fails. */
   1672   CURLOPT(CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPTTYPE_STRINGPOINT, 147),
   1673 
   1674   /* callback function for setting socket options */
   1675   CURLOPT(CURLOPT_SOCKOPTFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 148),
   1676   CURLOPT(CURLOPT_SOCKOPTDATA, CURLOPTTYPE_CBPOINT, 149),
   1677 
   1678   /* set to 0 to disable session ID reuse for this transfer, default is
   1679      enabled (== 1) */
   1680   CURLOPT(CURLOPT_SSL_SESSIONID_CACHE, CURLOPTTYPE_LONG, 150),
   1681 
   1682   /* allowed SSH authentication methods */
   1683   CURLOPT(CURLOPT_SSH_AUTH_TYPES, CURLOPTTYPE_VALUES, 151),
   1684 
   1685   /* Used by scp/sftp to do public/private key authentication */
   1686   CURLOPT(CURLOPT_SSH_PUBLIC_KEYFILE, CURLOPTTYPE_STRINGPOINT, 152),
   1687   CURLOPT(CURLOPT_SSH_PRIVATE_KEYFILE, CURLOPTTYPE_STRINGPOINT, 153),
   1688 
   1689   /* Send CCC (Clear Command Channel) after authentication */
   1690   CURLOPT(CURLOPT_FTP_SSL_CCC, CURLOPTTYPE_LONG, 154),
   1691 
   1692   /* Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution */
   1693   CURLOPT(CURLOPT_TIMEOUT_MS, CURLOPTTYPE_LONG, 155),
   1694   CURLOPT(CURLOPT_CONNECTTIMEOUT_MS, CURLOPTTYPE_LONG, 156),
   1695 
   1696   /* set to zero to disable the libcurl's decoding and thus pass the raw body
   1697      data to the application even when it is encoded/compressed */
   1698   CURLOPT(CURLOPT_HTTP_TRANSFER_DECODING, CURLOPTTYPE_LONG, 157),
   1699   CURLOPT(CURLOPT_HTTP_CONTENT_DECODING, CURLOPTTYPE_LONG, 158),
   1700 
   1701   /* Permission used when creating new files and directories on the remote
   1702      server for protocols that support it, SFTP/SCP/FILE */
   1703   CURLOPT(CURLOPT_NEW_FILE_PERMS, CURLOPTTYPE_LONG, 159),
   1704   CURLOPT(CURLOPT_NEW_DIRECTORY_PERMS, CURLOPTTYPE_LONG, 160),
   1705 
   1706   /* Set the behavior of POST when redirecting. Values must be set to one
   1707      of CURL_REDIR* defines below. This used to be called CURLOPT_POST301 */
   1708   CURLOPT(CURLOPT_POSTREDIR, CURLOPTTYPE_VALUES, 161),
   1709 
   1710   /* used by scp/sftp to verify the host's public key */
   1711   CURLOPT(CURLOPT_SSH_HOST_PUBLIC_KEY_MD5, CURLOPTTYPE_STRINGPOINT, 162),
   1712 
   1713   /* Callback function for opening socket (instead of socket(2)). Optionally,
   1714      callback is able change the address or refuse to connect returning
   1715      CURL_SOCKET_BAD. The callback should have type
   1716      curl_opensocket_callback */
   1717   CURLOPT(CURLOPT_OPENSOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 163),
   1718   CURLOPT(CURLOPT_OPENSOCKETDATA, CURLOPTTYPE_CBPOINT, 164),
   1719 
   1720   /* POST volatile input fields. */
   1721   CURLOPT(CURLOPT_COPYPOSTFIELDS, CURLOPTTYPE_OBJECTPOINT, 165),
   1722 
   1723   /* set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy */
   1724   CURLOPT(CURLOPT_PROXY_TRANSFER_MODE, CURLOPTTYPE_LONG, 166),
   1725 
   1726   /* Callback function for seeking in the input stream */
   1727   CURLOPT(CURLOPT_SEEKFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 167),
   1728   CURLOPT(CURLOPT_SEEKDATA, CURLOPTTYPE_CBPOINT, 168),
   1729 
   1730   /* CRL file */
   1731   CURLOPT(CURLOPT_CRLFILE, CURLOPTTYPE_STRINGPOINT, 169),
   1732 
   1733   /* Issuer certificate */
   1734   CURLOPT(CURLOPT_ISSUERCERT, CURLOPTTYPE_STRINGPOINT, 170),
   1735 
   1736   /* (IPv6) Address scope */
   1737   CURLOPT(CURLOPT_ADDRESS_SCOPE, CURLOPTTYPE_LONG, 171),
   1738 
   1739   /* Collect certificate chain info and allow it to get retrievable with
   1740      CURLINFO_CERTINFO after the transfer is complete. */
   1741   CURLOPT(CURLOPT_CERTINFO, CURLOPTTYPE_LONG, 172),
   1742 
   1743   /* "name" and "pwd" to use when fetching. */
   1744   CURLOPT(CURLOPT_USERNAME, CURLOPTTYPE_STRINGPOINT, 173),
   1745   CURLOPT(CURLOPT_PASSWORD, CURLOPTTYPE_STRINGPOINT, 174),
   1746 
   1747     /* "name" and "pwd" to use with Proxy when fetching. */
   1748   CURLOPT(CURLOPT_PROXYUSERNAME, CURLOPTTYPE_STRINGPOINT, 175),
   1749   CURLOPT(CURLOPT_PROXYPASSWORD, CURLOPTTYPE_STRINGPOINT, 176),
   1750 
   1751   /* Comma separated list of hostnames defining no-proxy zones. These should
   1752      match both hostnames directly, and hostnames within a domain. For
   1753      example, local.com will match local.com and www.local.com, but NOT
   1754      notlocal.com or www.notlocal.com. For compatibility with other
   1755      implementations of this, .local.com will be considered to be the same as
   1756      local.com. A single * is the only valid wildcard, and effectively
   1757      disables the use of proxy. */
   1758   CURLOPT(CURLOPT_NOPROXY, CURLOPTTYPE_STRINGPOINT, 177),
   1759 
   1760   /* block size for TFTP transfers */
   1761   CURLOPT(CURLOPT_TFTP_BLKSIZE, CURLOPTTYPE_LONG, 178),
   1762 
   1763   /* Socks Service */
   1764   /* DEPRECATED, do not use! */
   1765   CURLOPTDEPRECATED(CURLOPT_SOCKS5_GSSAPI_SERVICE,
   1766                     CURLOPTTYPE_STRINGPOINT, 179,
   1767                     7.49.0, "Use CURLOPT_PROXY_SERVICE_NAME"),
   1768 
   1769   /* Socks Service */
   1770   CURLOPT(CURLOPT_SOCKS5_GSSAPI_NEC, CURLOPTTYPE_LONG, 180),
   1771 
   1772   /* set the bitmask for the protocols that are allowed to be used for the
   1773      transfer, which thus helps the app which takes URLs from users or other
   1774      external inputs and want to restrict what protocol(s) to deal
   1775      with. Defaults to CURLPROTO_ALL. */
   1776   CURLOPTDEPRECATED(CURLOPT_PROTOCOLS, CURLOPTTYPE_LONG, 181,
   1777                     7.85.0, "Use CURLOPT_PROTOCOLS_STR"),
   1778 
   1779   /* set the bitmask for the protocols that libcurl is allowed to follow to,
   1780      as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
   1781      to be set in both bitmasks to be allowed to get redirected to. */
   1782   CURLOPTDEPRECATED(CURLOPT_REDIR_PROTOCOLS, CURLOPTTYPE_LONG, 182,
   1783                     7.85.0, "Use CURLOPT_REDIR_PROTOCOLS_STR"),
   1784 
   1785   /* set the SSH knownhost filename to use */
   1786   CURLOPT(CURLOPT_SSH_KNOWNHOSTS, CURLOPTTYPE_STRINGPOINT, 183),
   1787 
   1788   /* set the SSH host key callback, must point to a curl_sshkeycallback
   1789      function */
   1790   CURLOPT(CURLOPT_SSH_KEYFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 184),
   1791 
   1792   /* set the SSH host key callback custom pointer */
   1793   CURLOPT(CURLOPT_SSH_KEYDATA, CURLOPTTYPE_CBPOINT, 185),
   1794 
   1795   /* set the SMTP mail originator */
   1796   CURLOPT(CURLOPT_MAIL_FROM, CURLOPTTYPE_STRINGPOINT, 186),
   1797 
   1798   /* set the list of SMTP mail receiver(s) */
   1799   CURLOPT(CURLOPT_MAIL_RCPT, CURLOPTTYPE_SLISTPOINT, 187),
   1800 
   1801   /* FTP: send PRET before PASV */
   1802   CURLOPT(CURLOPT_FTP_USE_PRET, CURLOPTTYPE_LONG, 188),
   1803 
   1804   /* RTSP request method (OPTIONS, SETUP, PLAY, etc...) */
   1805   CURLOPT(CURLOPT_RTSP_REQUEST, CURLOPTTYPE_VALUES, 189),
   1806 
   1807   /* The RTSP session identifier */
   1808   CURLOPT(CURLOPT_RTSP_SESSION_ID, CURLOPTTYPE_STRINGPOINT, 190),
   1809 
   1810   /* The RTSP stream URI */
   1811   CURLOPT(CURLOPT_RTSP_STREAM_URI, CURLOPTTYPE_STRINGPOINT, 191),
   1812 
   1813   /* The Transport: header to use in RTSP requests */
   1814   CURLOPT(CURLOPT_RTSP_TRANSPORT, CURLOPTTYPE_STRINGPOINT, 192),
   1815 
   1816   /* Manually initialize the client RTSP CSeq for this handle */
   1817   CURLOPT(CURLOPT_RTSP_CLIENT_CSEQ, CURLOPTTYPE_LONG, 193),
   1818 
   1819   /* Manually initialize the server RTSP CSeq for this handle */
   1820   CURLOPT(CURLOPT_RTSP_SERVER_CSEQ, CURLOPTTYPE_LONG, 194),
   1821 
   1822   /* The stream to pass to INTERLEAVEFUNCTION. */
   1823   CURLOPT(CURLOPT_INTERLEAVEDATA, CURLOPTTYPE_CBPOINT, 195),
   1824 
   1825   /* Let the application define a custom write method for RTP data */
   1826   CURLOPT(CURLOPT_INTERLEAVEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 196),
   1827 
   1828   /* Turn on wildcard matching */
   1829   CURLOPT(CURLOPT_WILDCARDMATCH, CURLOPTTYPE_LONG, 197),
   1830 
   1831   /* Directory matching callback called before downloading of an
   1832      individual file (chunk) started */
   1833   CURLOPT(CURLOPT_CHUNK_BGN_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 198),
   1834 
   1835   /* Directory matching callback called after the file (chunk)
   1836      was downloaded, or skipped */
   1837   CURLOPT(CURLOPT_CHUNK_END_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 199),
   1838 
   1839   /* Change match (fnmatch-like) callback for wildcard matching */
   1840   CURLOPT(CURLOPT_FNMATCH_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 200),
   1841 
   1842   /* Let the application define custom chunk data pointer */
   1843   CURLOPT(CURLOPT_CHUNK_DATA, CURLOPTTYPE_CBPOINT, 201),
   1844 
   1845   /* FNMATCH_FUNCTION user pointer */
   1846   CURLOPT(CURLOPT_FNMATCH_DATA, CURLOPTTYPE_CBPOINT, 202),
   1847 
   1848   /* send linked-list of name:port:address sets */
   1849   CURLOPT(CURLOPT_RESOLVE, CURLOPTTYPE_SLISTPOINT, 203),
   1850 
   1851   /* Set a username for authenticated TLS */
   1852   CURLOPT(CURLOPT_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 204),
   1853 
   1854   /* Set a password for authenticated TLS */
   1855   CURLOPT(CURLOPT_TLSAUTH_PASSWORD, CURLOPTTYPE_STRINGPOINT, 205),
   1856 
   1857   /* Set authentication type for authenticated TLS */
   1858   CURLOPT(CURLOPT_TLSAUTH_TYPE, CURLOPTTYPE_STRINGPOINT, 206),
   1859 
   1860   /* Set to 1 to enable the "TE:" header in HTTP requests to ask for
   1861      compressed transfer-encoded responses. Set to 0 to disable the use of TE:
   1862      in outgoing requests. The current default is 0, but it might change in a
   1863      future libcurl release.
   1864 
   1865      libcurl will ask for the compressed methods it knows of, and if that
   1866      is not any, it will not ask for transfer-encoding at all even if this
   1867      option is set to 1.
   1868 
   1869   */
   1870   CURLOPT(CURLOPT_TRANSFER_ENCODING, CURLOPTTYPE_LONG, 207),
   1871 
   1872   /* Callback function for closing socket (instead of close(2)). The callback
   1873      should have type curl_closesocket_callback */
   1874   CURLOPT(CURLOPT_CLOSESOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 208),
   1875   CURLOPT(CURLOPT_CLOSESOCKETDATA, CURLOPTTYPE_CBPOINT, 209),
   1876 
   1877   /* allow GSSAPI credential delegation */
   1878   CURLOPT(CURLOPT_GSSAPI_DELEGATION, CURLOPTTYPE_VALUES, 210),
   1879 
   1880   /* Set the name servers to use for DNS resolution.
   1881    * Only supported by the c-ares DNS backend */
   1882   CURLOPT(CURLOPT_DNS_SERVERS, CURLOPTTYPE_STRINGPOINT, 211),
   1883 
   1884   /* Time-out accept operations (currently for FTP only) after this amount
   1885      of milliseconds. */
   1886   CURLOPT(CURLOPT_ACCEPTTIMEOUT_MS, CURLOPTTYPE_LONG, 212),
   1887 
   1888   /* Set TCP keepalive */
   1889   CURLOPT(CURLOPT_TCP_KEEPALIVE, CURLOPTTYPE_LONG, 213),
   1890 
   1891   /* non-universal keepalive knobs (Linux, AIX, HP-UX, more) */
   1892   CURLOPT(CURLOPT_TCP_KEEPIDLE, CURLOPTTYPE_LONG, 214),
   1893   CURLOPT(CURLOPT_TCP_KEEPINTVL, CURLOPTTYPE_LONG, 215),
   1894 
   1895   /* Enable/disable specific SSL features with a bitmask, see CURLSSLOPT_* */
   1896   CURLOPT(CURLOPT_SSL_OPTIONS, CURLOPTTYPE_VALUES, 216),
   1897 
   1898   /* Set the SMTP auth originator */
   1899   CURLOPT(CURLOPT_MAIL_AUTH, CURLOPTTYPE_STRINGPOINT, 217),
   1900 
   1901   /* Enable/disable SASL initial response */
   1902   CURLOPT(CURLOPT_SASL_IR, CURLOPTTYPE_LONG, 218),
   1903 
   1904   /* Function that will be called instead of the internal progress display
   1905    * function. This function should be defined as the curl_xferinfo_callback
   1906    * prototype defines. (Deprecates CURLOPT_PROGRESSFUNCTION) */
   1907   CURLOPT(CURLOPT_XFERINFOFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 219),
   1908 
   1909   /* The XOAUTH2 bearer token */
   1910   CURLOPT(CURLOPT_XOAUTH2_BEARER, CURLOPTTYPE_STRINGPOINT, 220),
   1911 
   1912   /* Set the interface string to use as outgoing network
   1913    * interface for DNS requests.
   1914    * Only supported by the c-ares DNS backend */
   1915   CURLOPT(CURLOPT_DNS_INTERFACE, CURLOPTTYPE_STRINGPOINT, 221),
   1916 
   1917   /* Set the local IPv4 address to use for outgoing DNS requests.
   1918    * Only supported by the c-ares DNS backend */
   1919   CURLOPT(CURLOPT_DNS_LOCAL_IP4, CURLOPTTYPE_STRINGPOINT, 222),
   1920 
   1921   /* Set the local IPv6 address to use for outgoing DNS requests.
   1922    * Only supported by the c-ares DNS backend */
   1923   CURLOPT(CURLOPT_DNS_LOCAL_IP6, CURLOPTTYPE_STRINGPOINT, 223),
   1924 
   1925   /* Set authentication options directly */
   1926   CURLOPT(CURLOPT_LOGIN_OPTIONS, CURLOPTTYPE_STRINGPOINT, 224),
   1927 
   1928   /* Enable/disable TLS NPN extension (http2 over ssl might fail without) */
   1929   CURLOPTDEPRECATED(CURLOPT_SSL_ENABLE_NPN, CURLOPTTYPE_LONG, 225,
   1930                     7.86.0, "Has no function"),
   1931 
   1932   /* Enable/disable TLS ALPN extension (http2 over ssl might fail without) */
   1933   CURLOPT(CURLOPT_SSL_ENABLE_ALPN, CURLOPTTYPE_LONG, 226),
   1934 
   1935   /* Time to wait for a response to an HTTP request containing an
   1936    * Expect: 100-continue header before sending the data anyway. */
   1937   CURLOPT(CURLOPT_EXPECT_100_TIMEOUT_MS, CURLOPTTYPE_LONG, 227),
   1938 
   1939   /* This points to a linked list of headers used for proxy requests only,
   1940      struct curl_slist kind */
   1941   CURLOPT(CURLOPT_PROXYHEADER, CURLOPTTYPE_SLISTPOINT, 228),
   1942 
   1943   /* Pass in a bitmask of "header options" */
   1944   CURLOPT(CURLOPT_HEADEROPT, CURLOPTTYPE_VALUES, 229),
   1945 
   1946   /* The public key in DER form used to validate the peer public key
   1947      this option is used only if SSL_VERIFYPEER is true */
   1948   CURLOPT(CURLOPT_PINNEDPUBLICKEY, CURLOPTTYPE_STRINGPOINT, 230),
   1949 
   1950   /* Path to Unix domain socket */
   1951   CURLOPT(CURLOPT_UNIX_SOCKET_PATH, CURLOPTTYPE_STRINGPOINT, 231),
   1952 
   1953   /* Set if we should verify the certificate status. */
   1954   CURLOPT(CURLOPT_SSL_VERIFYSTATUS, CURLOPTTYPE_LONG, 232),
   1955 
   1956   /* Set if we should enable TLS false start. */
   1957   CURLOPTDEPRECATED(CURLOPT_SSL_FALSESTART, CURLOPTTYPE_LONG, 233,
   1958                     8.15.0, "Has no function"),
   1959 
   1960   /* Do not squash dot-dot sequences */
   1961   CURLOPT(CURLOPT_PATH_AS_IS, CURLOPTTYPE_LONG, 234),
   1962 
   1963   /* Proxy Service Name */
   1964   CURLOPT(CURLOPT_PROXY_SERVICE_NAME, CURLOPTTYPE_STRINGPOINT, 235),
   1965 
   1966   /* Service Name */
   1967   CURLOPT(CURLOPT_SERVICE_NAME, CURLOPTTYPE_STRINGPOINT, 236),
   1968 
   1969   /* Wait/do not wait for pipe/mutex to clarify */
   1970   CURLOPT(CURLOPT_PIPEWAIT, CURLOPTTYPE_LONG, 237),
   1971 
   1972   /* Set the protocol used when curl is given a URL without a protocol */
   1973   CURLOPT(CURLOPT_DEFAULT_PROTOCOL, CURLOPTTYPE_STRINGPOINT, 238),
   1974 
   1975   /* Set stream weight, 1 - 256 (default is 16) */
   1976   CURLOPT(CURLOPT_STREAM_WEIGHT, CURLOPTTYPE_LONG, 239),
   1977 
   1978   /* Set stream dependency on another curl handle */
   1979   CURLOPT(CURLOPT_STREAM_DEPENDS, CURLOPTTYPE_OBJECTPOINT, 240),
   1980 
   1981   /* Set E-xclusive stream dependency on another curl handle */
   1982   CURLOPT(CURLOPT_STREAM_DEPENDS_E, CURLOPTTYPE_OBJECTPOINT, 241),
   1983 
   1984   /* Do not send any tftp option requests to the server */
   1985   CURLOPT(CURLOPT_TFTP_NO_OPTIONS, CURLOPTTYPE_LONG, 242),
   1986 
   1987   /* Linked-list of host:port:connect-to-host:connect-to-port,
   1988      overrides the URL's host:port (only for the network layer) */
   1989   CURLOPT(CURLOPT_CONNECT_TO, CURLOPTTYPE_SLISTPOINT, 243),
   1990 
   1991   /* Set TCP Fast Open */
   1992   CURLOPT(CURLOPT_TCP_FASTOPEN, CURLOPTTYPE_LONG, 244),
   1993 
   1994   /* Continue to send data if the server responds early with an
   1995    * HTTP status code >= 300 */
   1996   CURLOPT(CURLOPT_KEEP_SENDING_ON_ERROR, CURLOPTTYPE_LONG, 245),
   1997 
   1998   /* The CApath or CAfile used to validate the proxy certificate
   1999      this option is used only if PROXY_SSL_VERIFYPEER is true */
   2000   CURLOPT(CURLOPT_PROXY_CAINFO, CURLOPTTYPE_STRINGPOINT, 246),
   2001 
   2002   /* The CApath directory used to validate the proxy certificate
   2003      this option is used only if PROXY_SSL_VERIFYPEER is true */
   2004   CURLOPT(CURLOPT_PROXY_CAPATH, CURLOPTTYPE_STRINGPOINT, 247),
   2005 
   2006   /* Set if we should verify the proxy in ssl handshake,
   2007      set 1 to verify. */
   2008   CURLOPT(CURLOPT_PROXY_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 248),
   2009 
   2010   /* Set if we should verify the Common name from the proxy certificate in ssl
   2011    * handshake, set 1 to check existence, 2 to ensure that it matches
   2012    * the provided hostname. */
   2013   CURLOPT(CURLOPT_PROXY_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 249),
   2014 
   2015   /* What version to specifically try to use for proxy.
   2016      See CURL_SSLVERSION defines below. */
   2017   CURLOPT(CURLOPT_PROXY_SSLVERSION, CURLOPTTYPE_VALUES, 250),
   2018 
   2019   /* Set a username for authenticated TLS for proxy */
   2020   CURLOPT(CURLOPT_PROXY_TLSAUTH_USERNAME, CURLOPTTYPE_STRINGPOINT, 251),
   2021 
   2022   /* Set a password for authenticated TLS for proxy */
   2023   CURLOPT(CURLOPT_PROXY_TLSAUTH_PASSWORD, CURLOPTTYPE_STRINGPOINT, 252),
   2024 
   2025   /* Set authentication type for authenticated TLS for proxy */
   2026   CURLOPT(CURLOPT_PROXY_TLSAUTH_TYPE, CURLOPTTYPE_STRINGPOINT, 253),
   2027 
   2028   /* name of the file keeping your private SSL-certificate for proxy */
   2029   CURLOPT(CURLOPT_PROXY_SSLCERT, CURLOPTTYPE_STRINGPOINT, 254),
   2030 
   2031   /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") for
   2032      proxy */
   2033   CURLOPT(CURLOPT_PROXY_SSLCERTTYPE, CURLOPTTYPE_STRINGPOINT, 255),
   2034 
   2035   /* name of the file keeping your private SSL-key for proxy */
   2036   CURLOPT(CURLOPT_PROXY_SSLKEY, CURLOPTTYPE_STRINGPOINT, 256),
   2037 
   2038   /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") for
   2039      proxy */
   2040   CURLOPT(CURLOPT_PROXY_SSLKEYTYPE, CURLOPTTYPE_STRINGPOINT, 257),
   2041 
   2042   /* password for the SSL private key for proxy */
   2043   CURLOPT(CURLOPT_PROXY_KEYPASSWD, CURLOPTTYPE_STRINGPOINT, 258),
   2044 
   2045   /* Specify which TLS 1.2 (1.1, 1.0) ciphers to use for proxy */
   2046   CURLOPT(CURLOPT_PROXY_SSL_CIPHER_LIST, CURLOPTTYPE_STRINGPOINT, 259),
   2047 
   2048   /* CRL file for proxy */
   2049   CURLOPT(CURLOPT_PROXY_CRLFILE, CURLOPTTYPE_STRINGPOINT, 260),
   2050 
   2051   /* Enable/disable specific SSL features with a bitmask for proxy, see
   2052      CURLSSLOPT_* */
   2053   CURLOPT(CURLOPT_PROXY_SSL_OPTIONS, CURLOPTTYPE_LONG, 261),
   2054 
   2055   /* Name of pre proxy to use. */
   2056   CURLOPT(CURLOPT_PRE_PROXY, CURLOPTTYPE_STRINGPOINT, 262),
   2057 
   2058   /* The public key in DER form used to validate the proxy public key
   2059      this option is used only if PROXY_SSL_VERIFYPEER is true */
   2060   CURLOPT(CURLOPT_PROXY_PINNEDPUBLICKEY, CURLOPTTYPE_STRINGPOINT, 263),
   2061 
   2062   /* Path to an abstract Unix domain socket */
   2063   CURLOPT(CURLOPT_ABSTRACT_UNIX_SOCKET, CURLOPTTYPE_STRINGPOINT, 264),
   2064 
   2065   /* Suppress proxy CONNECT response headers from user callbacks */
   2066   CURLOPT(CURLOPT_SUPPRESS_CONNECT_HEADERS, CURLOPTTYPE_LONG, 265),
   2067 
   2068   /* The request target, instead of extracted from the URL */
   2069   CURLOPT(CURLOPT_REQUEST_TARGET, CURLOPTTYPE_STRINGPOINT, 266),
   2070 
   2071   /* bitmask of allowed auth methods for connections to SOCKS5 proxies */
   2072   CURLOPT(CURLOPT_SOCKS5_AUTH, CURLOPTTYPE_LONG, 267),
   2073 
   2074   /* Enable/disable SSH compression */
   2075   CURLOPT(CURLOPT_SSH_COMPRESSION, CURLOPTTYPE_LONG, 268),
   2076 
   2077   /* Post MIME data. */
   2078   CURLOPT(CURLOPT_MIMEPOST, CURLOPTTYPE_OBJECTPOINT, 269),
   2079 
   2080   /* Time to use with the CURLOPT_TIMECONDITION. Specified in number of
   2081      seconds since 1 Jan 1970. */
   2082   CURLOPT(CURLOPT_TIMEVALUE_LARGE, CURLOPTTYPE_OFF_T, 270),
   2083 
   2084   /* Head start in milliseconds to give happy eyeballs. */
   2085   CURLOPT(CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS, CURLOPTTYPE_LONG, 271),
   2086 
   2087   /* Function that will be called before a resolver request is made */
   2088   CURLOPT(CURLOPT_RESOLVER_START_FUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 272),
   2089 
   2090   /* User data to pass to the resolver start callback. */
   2091   CURLOPT(CURLOPT_RESOLVER_START_DATA, CURLOPTTYPE_CBPOINT, 273),
   2092 
   2093   /* send HAProxy PROXY protocol header? */
   2094   CURLOPT(CURLOPT_HAPROXYPROTOCOL, CURLOPTTYPE_LONG, 274),
   2095 
   2096   /* shuffle addresses before use when DNS returns multiple */
   2097   CURLOPT(CURLOPT_DNS_SHUFFLE_ADDRESSES, CURLOPTTYPE_LONG, 275),
   2098 
   2099   /* Specify which TLS 1.3 ciphers suites to use */
   2100   CURLOPT(CURLOPT_TLS13_CIPHERS, CURLOPTTYPE_STRINGPOINT, 276),
   2101   CURLOPT(CURLOPT_PROXY_TLS13_CIPHERS, CURLOPTTYPE_STRINGPOINT, 277),
   2102 
   2103   /* Disallow specifying username/login in URL. */
   2104   CURLOPT(CURLOPT_DISALLOW_USERNAME_IN_URL, CURLOPTTYPE_LONG, 278),
   2105 
   2106   /* DNS-over-HTTPS URL */
   2107   CURLOPT(CURLOPT_DOH_URL, CURLOPTTYPE_STRINGPOINT, 279),
   2108 
   2109   /* Preferred buffer size to use for uploads */
   2110   CURLOPT(CURLOPT_UPLOAD_BUFFERSIZE, CURLOPTTYPE_LONG, 280),
   2111 
   2112   /* Time in ms between connection upkeep calls for long-lived connections. */
   2113   CURLOPT(CURLOPT_UPKEEP_INTERVAL_MS, CURLOPTTYPE_LONG, 281),
   2114 
   2115   /* Specify URL using CURL URL API. */
   2116   CURLOPT(CURLOPT_CURLU, CURLOPTTYPE_OBJECTPOINT, 282),
   2117 
   2118   /* add trailing data just after no more data is available */
   2119   CURLOPT(CURLOPT_TRAILERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 283),
   2120 
   2121   /* pointer to be passed to HTTP_TRAILER_FUNCTION */
   2122   CURLOPT(CURLOPT_TRAILERDATA, CURLOPTTYPE_CBPOINT, 284),
   2123 
   2124   /* set this to 1L to allow HTTP/0.9 responses or 0L to disallow */
   2125   CURLOPT(CURLOPT_HTTP09_ALLOWED, CURLOPTTYPE_LONG, 285),
   2126 
   2127   /* alt-svc control bitmask */
   2128   CURLOPT(CURLOPT_ALTSVC_CTRL, CURLOPTTYPE_LONG, 286),
   2129 
   2130   /* alt-svc cache filename to possibly read from/write to */
   2131   CURLOPT(CURLOPT_ALTSVC, CURLOPTTYPE_STRINGPOINT, 287),
   2132 
   2133   /* maximum age (idle time) of a connection to consider it for reuse
   2134    * (in seconds) */
   2135   CURLOPT(CURLOPT_MAXAGE_CONN, CURLOPTTYPE_LONG, 288),
   2136 
   2137   /* SASL authorization identity */
   2138   CURLOPT(CURLOPT_SASL_AUTHZID, CURLOPTTYPE_STRINGPOINT, 289),
   2139 
   2140   /* allow RCPT TO command to fail for some recipients */
   2141   CURLOPT(CURLOPT_MAIL_RCPT_ALLOWFAILS, CURLOPTTYPE_LONG, 290),
   2142 
   2143   /* the private SSL-certificate as a "blob" */
   2144   CURLOPT(CURLOPT_SSLCERT_BLOB, CURLOPTTYPE_BLOB, 291),
   2145   CURLOPT(CURLOPT_SSLKEY_BLOB, CURLOPTTYPE_BLOB, 292),
   2146   CURLOPT(CURLOPT_PROXY_SSLCERT_BLOB, CURLOPTTYPE_BLOB, 293),
   2147   CURLOPT(CURLOPT_PROXY_SSLKEY_BLOB, CURLOPTTYPE_BLOB, 294),
   2148   CURLOPT(CURLOPT_ISSUERCERT_BLOB, CURLOPTTYPE_BLOB, 295),
   2149 
   2150   /* Issuer certificate for proxy */
   2151   CURLOPT(CURLOPT_PROXY_ISSUERCERT, CURLOPTTYPE_STRINGPOINT, 296),
   2152   CURLOPT(CURLOPT_PROXY_ISSUERCERT_BLOB, CURLOPTTYPE_BLOB, 297),
   2153 
   2154   /* the EC curves requested by the TLS client (RFC 8422, 5.1);
   2155    * OpenSSL support via 'set_groups'/'set_curves':
   2156    * https://docs.openssl.org/master/man3/SSL_CTX_set1_curves/
   2157    */
   2158   CURLOPT(CURLOPT_SSL_EC_CURVES, CURLOPTTYPE_STRINGPOINT, 298),
   2159 
   2160   /* HSTS bitmask */
   2161   CURLOPT(CURLOPT_HSTS_CTRL, CURLOPTTYPE_LONG, 299),
   2162   /* HSTS filename */
   2163   CURLOPT(CURLOPT_HSTS, CURLOPTTYPE_STRINGPOINT, 300),
   2164 
   2165   /* HSTS read callback */
   2166   CURLOPT(CURLOPT_HSTSREADFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 301),
   2167   CURLOPT(CURLOPT_HSTSREADDATA, CURLOPTTYPE_CBPOINT, 302),
   2168 
   2169   /* HSTS write callback */
   2170   CURLOPT(CURLOPT_HSTSWRITEFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 303),
   2171   CURLOPT(CURLOPT_HSTSWRITEDATA, CURLOPTTYPE_CBPOINT, 304),
   2172 
   2173   /* Parameters for V4 signature */
   2174   CURLOPT(CURLOPT_AWS_SIGV4, CURLOPTTYPE_STRINGPOINT, 305),
   2175 
   2176   /* Same as CURLOPT_SSL_VERIFYPEER but for DoH (DNS-over-HTTPS) servers. */
   2177   CURLOPT(CURLOPT_DOH_SSL_VERIFYPEER, CURLOPTTYPE_LONG, 306),
   2178 
   2179   /* Same as CURLOPT_SSL_VERIFYHOST but for DoH (DNS-over-HTTPS) servers. */
   2180   CURLOPT(CURLOPT_DOH_SSL_VERIFYHOST, CURLOPTTYPE_LONG, 307),
   2181 
   2182   /* Same as CURLOPT_SSL_VERIFYSTATUS but for DoH (DNS-over-HTTPS) servers. */
   2183   CURLOPT(CURLOPT_DOH_SSL_VERIFYSTATUS, CURLOPTTYPE_LONG, 308),
   2184 
   2185   /* The CA certificates as "blob" used to validate the peer certificate
   2186      this option is used only if SSL_VERIFYPEER is true */
   2187   CURLOPT(CURLOPT_CAINFO_BLOB, CURLOPTTYPE_BLOB, 309),
   2188 
   2189   /* The CA certificates as "blob" used to validate the proxy certificate
   2190      this option is used only if PROXY_SSL_VERIFYPEER is true */
   2191   CURLOPT(CURLOPT_PROXY_CAINFO_BLOB, CURLOPTTYPE_BLOB, 310),
   2192 
   2193   /* used by scp/sftp to verify the host's public key */
   2194   CURLOPT(CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256, CURLOPTTYPE_STRINGPOINT, 311),
   2195 
   2196   /* Function that will be called immediately before the initial request
   2197      is made on a connection (after any protocol negotiation step).  */
   2198   CURLOPT(CURLOPT_PREREQFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 312),
   2199 
   2200   /* Data passed to the CURLOPT_PREREQFUNCTION callback */
   2201   CURLOPT(CURLOPT_PREREQDATA, CURLOPTTYPE_CBPOINT, 313),
   2202 
   2203   /* maximum age (since creation) of a connection to consider it for reuse
   2204    * (in seconds) */
   2205   CURLOPT(CURLOPT_MAXLIFETIME_CONN, CURLOPTTYPE_LONG, 314),
   2206 
   2207   /* Set MIME option flags. */
   2208   CURLOPT(CURLOPT_MIME_OPTIONS, CURLOPTTYPE_LONG, 315),
   2209 
   2210   /* set the SSH host key callback, must point to a curl_sshkeycallback
   2211      function */
   2212   CURLOPT(CURLOPT_SSH_HOSTKEYFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 316),
   2213 
   2214   /* set the SSH host key callback custom pointer */
   2215   CURLOPT(CURLOPT_SSH_HOSTKEYDATA, CURLOPTTYPE_CBPOINT, 317),
   2216 
   2217   /* specify which protocols that are allowed to be used for the transfer,
   2218      which thus helps the app which takes URLs from users or other external
   2219      inputs and want to restrict what protocol(s) to deal with. Defaults to
   2220      all built-in protocols. */
   2221   CURLOPT(CURLOPT_PROTOCOLS_STR, CURLOPTTYPE_STRINGPOINT, 318),
   2222 
   2223   /* specify which protocols that libcurl is allowed to follow directs to */
   2224   CURLOPT(CURLOPT_REDIR_PROTOCOLS_STR, CURLOPTTYPE_STRINGPOINT, 319),
   2225 
   2226   /* WebSockets options */
   2227   CURLOPT(CURLOPT_WS_OPTIONS, CURLOPTTYPE_LONG, 320),
   2228 
   2229   /* CA cache timeout */
   2230   CURLOPT(CURLOPT_CA_CACHE_TIMEOUT, CURLOPTTYPE_LONG, 321),
   2231 
   2232   /* Can leak things, gonna exit() soon */
   2233   CURLOPT(CURLOPT_QUICK_EXIT, CURLOPTTYPE_LONG, 322),
   2234 
   2235   /* set a specific client IP for HAProxy PROXY protocol header? */
   2236   CURLOPT(CURLOPT_HAPROXY_CLIENT_IP, CURLOPTTYPE_STRINGPOINT, 323),
   2237 
   2238   /* millisecond version */
   2239   CURLOPT(CURLOPT_SERVER_RESPONSE_TIMEOUT_MS, CURLOPTTYPE_LONG, 324),
   2240 
   2241   /* set ECH configuration */
   2242   CURLOPT(CURLOPT_ECH, CURLOPTTYPE_STRINGPOINT, 325),
   2243 
   2244   /* maximum number of keepalive probes (Linux, *BSD, macOS, etc.) */
   2245   CURLOPT(CURLOPT_TCP_KEEPCNT, CURLOPTTYPE_LONG, 326),
   2246 
   2247   CURLOPT(CURLOPT_UPLOAD_FLAGS, CURLOPTTYPE_LONG, 327),
   2248 
   2249   /* set TLS supported signature algorithms */
   2250   CURLOPT(CURLOPT_SSL_SIGNATURE_ALGORITHMS, CURLOPTTYPE_STRINGPOINT, 328),
   2251 
   2252   CURLOPT_LASTENTRY /* the last unused */
   2253 } CURLoption;
   2254 
   2255 #ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
   2256                           the obsolete stuff removed! */
   2257 
   2258 /* Backwards compatibility with older names */
   2259 /* These are scheduled to disappear by 2011 */
   2260 
   2261 /* This was added in version 7.19.1 */
   2262 #define CURLOPT_POST301 CURLOPT_POSTREDIR
   2263 
   2264 /* These are scheduled to disappear by 2009 */
   2265 
   2266 /* The following were added in 7.17.0 */
   2267 #define CURLOPT_SSLKEYPASSWD CURLOPT_KEYPASSWD
   2268 #define CURLOPT_FTPAPPEND CURLOPT_APPEND
   2269 #define CURLOPT_FTPLISTONLY CURLOPT_DIRLISTONLY
   2270 #define CURLOPT_FTP_SSL CURLOPT_USE_SSL
   2271 
   2272 /* The following were added earlier */
   2273 
   2274 #define CURLOPT_SSLCERTPASSWD CURLOPT_KEYPASSWD
   2275 #define CURLOPT_KRB4LEVEL CURLOPT_KRBLEVEL
   2276 
   2277 /* */
   2278 #define CURLOPT_FTP_RESPONSE_TIMEOUT CURLOPT_SERVER_RESPONSE_TIMEOUT
   2279 
   2280 /* Added in 8.2.0 */
   2281 #define CURLOPT_MAIL_RCPT_ALLLOWFAILS CURLOPT_MAIL_RCPT_ALLOWFAILS
   2282 
   2283 #else
   2284 /* This is set if CURL_NO_OLDIES is defined at compile-time */
   2285 #undef CURLOPT_DNS_USE_GLOBAL_CACHE /* soon obsolete */
   2286 #endif
   2287 
   2288 
   2289   /* Below here follows defines for the CURLOPT_IPRESOLVE option. If a host
   2290      name resolves addresses using more than one IP protocol version, this
   2291      option might be handy to force libcurl to use a specific IP version. */
   2292 #define CURL_IPRESOLVE_WHATEVER 0L /* default, uses addresses to all IP
   2293                                      versions that your system allows */
   2294 #define CURL_IPRESOLVE_V4       1L /* uses only IPv4 addresses/connections */
   2295 #define CURL_IPRESOLVE_V6       2L /* uses only IPv6 addresses/connections */
   2296 
   2297   /* Convenient "aliases" */
   2298 #define CURLOPT_RTSPHEADER CURLOPT_HTTPHEADER
   2299 
   2300 /* These constants are for use with the CURLOPT_HTTP_VERSION option. */
   2301 #define CURL_HTTP_VERSION_NONE  0L /* setting this means we do not care, and
   2302                                       that we would like the library to choose
   2303                                       the best possible for us! */
   2304 #define CURL_HTTP_VERSION_1_0   1L /* please use HTTP 1.0 in the request */
   2305 #define CURL_HTTP_VERSION_1_1   2L /* please use HTTP 1.1 in the request */
   2306 #define CURL_HTTP_VERSION_2_0   3L /* please use HTTP 2 in the request */
   2307 #define CURL_HTTP_VERSION_2TLS  4L /* use version 2 for HTTPS, version 1.1 for
   2308                                       HTTP */
   2309 #define CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE 5L /* please use HTTP 2 without
   2310                                                   HTTP/1.1 Upgrade */
   2311 #define CURL_HTTP_VERSION_3     30L /* Use HTTP/3, fallback to HTTP/2 or
   2312                                        HTTP/1 if needed. For HTTPS only. For
   2313                                        HTTP, this option makes libcurl
   2314                                        return error. */
   2315 #define CURL_HTTP_VERSION_3ONLY 31L /* Use HTTP/3 without fallback. For
   2316                                        HTTPS only. For HTTP, this makes
   2317                                        libcurl return error. */
   2318 #define CURL_HTTP_VERSION_LAST  32L /* *ILLEGAL* http version */
   2319 
   2320 /* Convenience definition simple because the name of the version is HTTP/2 and
   2321    not 2.0. The 2_0 version of the enum name was set while the version was
   2322    still planned to be 2.0 and we stick to it for compatibility. */
   2323 #define CURL_HTTP_VERSION_2 CURL_HTTP_VERSION_2_0
   2324 
   2325 /*
   2326  * Public API enums for RTSP requests
   2327  */
   2328 
   2329 #define CURL_RTSPREQ_NONE          0L
   2330 #define CURL_RTSPREQ_OPTIONS       1L
   2331 #define CURL_RTSPREQ_DESCRIBE      2L
   2332 #define CURL_RTSPREQ_ANNOUNCE      3L
   2333 #define CURL_RTSPREQ_SETUP         4L
   2334 #define CURL_RTSPREQ_PLAY          5L
   2335 #define CURL_RTSPREQ_PAUSE         6L
   2336 #define CURL_RTSPREQ_TEARDOWN      7L
   2337 #define CURL_RTSPREQ_GET_PARAMETER 8L
   2338 #define CURL_RTSPREQ_SET_PARAMETER 9L
   2339 #define CURL_RTSPREQ_RECORD        10L
   2340 #define CURL_RTSPREQ_RECEIVE       11L
   2341 #define CURL_RTSPREQ_LAST          12L /* not used */
   2342 
   2343   /* These enums are for use with the CURLOPT_NETRC option. */
   2344 #define CURL_NETRC_IGNORED  0L /* The .netrc will never be read.
   2345                                   This is the default. */
   2346 #define CURL_NETRC_OPTIONAL 1L /* A user:password in the URL will be preferred
   2347                                   to one in the .netrc. */
   2348 #define CURL_NETRC_REQUIRED 2L /* A user:password in the URL will be ignored.
   2349                                   Unless one is set programmatically, the
   2350                                   .netrc will be queried. */
   2351 enum CURL_NETRC_OPTION {
   2352   /* we set a single member here, just to make sure we still provide the enum,
   2353      but the values to use are defined above with L suffixes */
   2354   CURL_NETRC_LAST = 3
   2355 };
   2356 
   2357 #define CURL_SSLVERSION_DEFAULT 0
   2358 #define CURL_SSLVERSION_TLSv1   1 /* TLS 1.x */
   2359 #define CURL_SSLVERSION_SSLv2   2
   2360 #define CURL_SSLVERSION_SSLv3   3
   2361 #define CURL_SSLVERSION_TLSv1_0 4
   2362 #define CURL_SSLVERSION_TLSv1_1 5
   2363 #define CURL_SSLVERSION_TLSv1_2 6
   2364 #define CURL_SSLVERSION_TLSv1_3 7
   2365 
   2366 #define CURL_SSLVERSION_LAST 8 /* never use, keep last */
   2367 
   2368 #define CURL_SSLVERSION_MAX_NONE 0
   2369 #define CURL_SSLVERSION_MAX_DEFAULT (CURL_SSLVERSION_TLSv1   << 16)
   2370 #define CURL_SSLVERSION_MAX_TLSv1_0 (CURL_SSLVERSION_TLSv1_0 << 16)
   2371 #define CURL_SSLVERSION_MAX_TLSv1_1 (CURL_SSLVERSION_TLSv1_1 << 16)
   2372 #define CURL_SSLVERSION_MAX_TLSv1_2 (CURL_SSLVERSION_TLSv1_2 << 16)
   2373 #define CURL_SSLVERSION_MAX_TLSv1_3 (CURL_SSLVERSION_TLSv1_3 << 16)
   2374 
   2375   /* never use, keep last */
   2376 #define CURL_SSLVERSION_MAX_LAST    (CURL_SSLVERSION_LAST    << 16)
   2377 
   2378 #define CURL_TLSAUTH_NONE 0L
   2379 #define CURL_TLSAUTH_SRP  1L
   2380 
   2381 enum CURL_TLSAUTH {
   2382   /* we set a single member here, just to make sure we still provide the enum,
   2383      but the values to use are defined above with L suffixes */
   2384   CURL_TLSAUTH_LAST = 2
   2385 };
   2386 
   2387 /* symbols to use with CURLOPT_POSTREDIR.
   2388    CURL_REDIR_POST_301, CURL_REDIR_POST_302 and CURL_REDIR_POST_303
   2389    can be bitwise ORed so that CURL_REDIR_POST_301 | CURL_REDIR_POST_302
   2390    | CURL_REDIR_POST_303 == CURL_REDIR_POST_ALL */
   2391 
   2392 #define CURL_REDIR_GET_ALL  0
   2393 #define CURL_REDIR_POST_301 1
   2394 #define CURL_REDIR_POST_302 2
   2395 #define CURL_REDIR_POST_303 4
   2396 #define CURL_REDIR_POST_ALL \
   2397     (CURL_REDIR_POST_301|CURL_REDIR_POST_302|CURL_REDIR_POST_303)
   2398 
   2399 #define CURL_TIMECOND_NONE         0L
   2400 #define CURL_TIMECOND_IFMODSINCE   1L
   2401 #define CURL_TIMECOND_IFUNMODSINCE 2L
   2402 #define CURL_TIMECOND_LASTMOD      3L
   2403 
   2404 typedef enum {
   2405   /* we set a single member here, just to make sure we still provide
   2406      the enum typedef, but the values to use are defined above with L
   2407      suffixes */
   2408   CURL_TIMECOND_LAST = 4
   2409 } curl_TimeCond;
   2410 
   2411 /* Special size_t value signaling a null-terminated string. */
   2412 #define CURL_ZERO_TERMINATED ((size_t) -1)
   2413 
   2414 /* curl_strequal() and curl_strnequal() are subject for removal in a future
   2415    release */
   2416 CURL_EXTERN int curl_strequal(const char *s1, const char *s2);
   2417 CURL_EXTERN int curl_strnequal(const char *s1, const char *s2, size_t n);
   2418 
   2419 /* Mime/form handling support. */
   2420 typedef struct curl_mime      curl_mime;      /* Mime context. */
   2421 typedef struct curl_mimepart  curl_mimepart;  /* Mime part context. */
   2422 
   2423 /* CURLMIMEOPT_ defines are for the CURLOPT_MIME_OPTIONS option. */
   2424 #define CURLMIMEOPT_FORMESCAPE  (1<<0) /* Use backslash-escaping for forms. */
   2425 
   2426 /*
   2427  * NAME curl_mime_init()
   2428  *
   2429  * DESCRIPTION
   2430  *
   2431  * Create a mime context and return its handle. The easy parameter is the
   2432  * target handle.
   2433  */
   2434 CURL_EXTERN curl_mime *curl_mime_init(CURL *easy);
   2435 
   2436 /*
   2437  * NAME curl_mime_free()
   2438  *
   2439  * DESCRIPTION
   2440  *
   2441  * release a mime handle and its substructures.
   2442  */
   2443 CURL_EXTERN void curl_mime_free(curl_mime *mime);
   2444 
   2445 /*
   2446  * NAME curl_mime_addpart()
   2447  *
   2448  * DESCRIPTION
   2449  *
   2450  * Append a new empty part to the given mime context and return a handle to
   2451  * the created part.
   2452  */
   2453 CURL_EXTERN curl_mimepart *curl_mime_addpart(curl_mime *mime);
   2454 
   2455 /*
   2456  * NAME curl_mime_name()
   2457  *
   2458  * DESCRIPTION
   2459  *
   2460  * Set mime/form part name.
   2461  */
   2462 CURL_EXTERN CURLcode curl_mime_name(curl_mimepart *part, const char *name);
   2463 
   2464 /*
   2465  * NAME curl_mime_filename()
   2466  *
   2467  * DESCRIPTION
   2468  *
   2469  * Set mime part remote filename.
   2470  */
   2471 CURL_EXTERN CURLcode curl_mime_filename(curl_mimepart *part,
   2472                                         const char *filename);
   2473 
   2474 /*
   2475  * NAME curl_mime_type()
   2476  *
   2477  * DESCRIPTION
   2478  *
   2479  * Set mime part type.
   2480  */
   2481 CURL_EXTERN CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype);
   2482 
   2483 /*
   2484  * NAME curl_mime_encoder()
   2485  *
   2486  * DESCRIPTION
   2487  *
   2488  * Set mime data transfer encoder.
   2489  */
   2490 CURL_EXTERN CURLcode curl_mime_encoder(curl_mimepart *part,
   2491                                        const char *encoding);
   2492 
   2493 /*
   2494  * NAME curl_mime_data()
   2495  *
   2496  * DESCRIPTION
   2497  *
   2498  * Set mime part data source from memory data,
   2499  */
   2500 CURL_EXTERN CURLcode curl_mime_data(curl_mimepart *part,
   2501                                     const char *data, size_t datasize);
   2502 
   2503 /*
   2504  * NAME curl_mime_filedata()
   2505  *
   2506  * DESCRIPTION
   2507  *
   2508  * Set mime part data source from named file.
   2509  */
   2510 CURL_EXTERN CURLcode curl_mime_filedata(curl_mimepart *part,
   2511                                         const char *filename);
   2512 
   2513 /*
   2514  * NAME curl_mime_data_cb()
   2515  *
   2516  * DESCRIPTION
   2517  *
   2518  * Set mime part data source from callback function.
   2519  */
   2520 CURL_EXTERN CURLcode curl_mime_data_cb(curl_mimepart *part,
   2521                                        curl_off_t datasize,
   2522                                        curl_read_callback readfunc,
   2523                                        curl_seek_callback seekfunc,
   2524                                        curl_free_callback freefunc,
   2525                                        void *arg);
   2526 
   2527 /*
   2528  * NAME curl_mime_subparts()
   2529  *
   2530  * DESCRIPTION
   2531  *
   2532  * Set mime part data source from subparts.
   2533  */
   2534 CURL_EXTERN CURLcode curl_mime_subparts(curl_mimepart *part,
   2535                                         curl_mime *subparts);
   2536 /*
   2537  * NAME curl_mime_headers()
   2538  *
   2539  * DESCRIPTION
   2540  *
   2541  * Set mime part headers.
   2542  */
   2543 CURL_EXTERN CURLcode curl_mime_headers(curl_mimepart *part,
   2544                                        struct curl_slist *headers,
   2545                                        int take_ownership);
   2546 
   2547 typedef enum {
   2548   /********* the first one is unused ************/
   2549   CURLFORM_NOTHING         CURL_DEPRECATED(7.56.0, ""),
   2550   CURLFORM_COPYNAME        CURL_DEPRECATED(7.56.0, "Use curl_mime_name()"),
   2551   CURLFORM_PTRNAME         CURL_DEPRECATED(7.56.0, "Use curl_mime_name()"),
   2552   CURLFORM_NAMELENGTH      CURL_DEPRECATED(7.56.0, ""),
   2553   CURLFORM_COPYCONTENTS    CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
   2554   CURLFORM_PTRCONTENTS     CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
   2555   CURLFORM_CONTENTSLENGTH  CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
   2556   CURLFORM_FILECONTENT     CURL_DEPRECATED(7.56.0, "Use curl_mime_data_cb()"),
   2557   CURLFORM_ARRAY           CURL_DEPRECATED(7.56.0, ""),
   2558   CURLFORM_OBSOLETE,
   2559   CURLFORM_FILE            CURL_DEPRECATED(7.56.0, "Use curl_mime_filedata()"),
   2560 
   2561   CURLFORM_BUFFER          CURL_DEPRECATED(7.56.0, "Use curl_mime_filename()"),
   2562   CURLFORM_BUFFERPTR       CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
   2563   CURLFORM_BUFFERLENGTH    CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
   2564 
   2565   CURLFORM_CONTENTTYPE     CURL_DEPRECATED(7.56.0, "Use curl_mime_type()"),
   2566   CURLFORM_CONTENTHEADER   CURL_DEPRECATED(7.56.0, "Use curl_mime_headers()"),
   2567   CURLFORM_FILENAME        CURL_DEPRECATED(7.56.0, "Use curl_mime_filename()"),
   2568   CURLFORM_END,
   2569   CURLFORM_OBSOLETE2,
   2570 
   2571   CURLFORM_STREAM          CURL_DEPRECATED(7.56.0, "Use curl_mime_data_cb()"),
   2572   CURLFORM_CONTENTLEN  /* added in 7.46.0, provide a curl_off_t length */
   2573                            CURL_DEPRECATED(7.56.0, "Use curl_mime_data()"),
   2574 
   2575   CURLFORM_LASTENTRY /* the last unused */
   2576 } CURLformoption;
   2577 
   2578 /* structure to be used as parameter for CURLFORM_ARRAY */
   2579 struct curl_forms {
   2580   CURLformoption option;
   2581   const char     *value;
   2582 };
   2583 
   2584 /* use this for multipart formpost building */
   2585 /* Returns code for curl_formadd()
   2586  *
   2587  * Returns:
   2588  * CURL_FORMADD_OK             on success
   2589  * CURL_FORMADD_MEMORY         if the FormInfo allocation fails
   2590  * CURL_FORMADD_OPTION_TWICE   if one option is given twice for one Form
   2591  * CURL_FORMADD_NULL           if a null pointer was given for a char
   2592  * CURL_FORMADD_MEMORY         if the allocation of a FormInfo struct failed
   2593  * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
   2594  * CURL_FORMADD_INCOMPLETE     if the some FormInfo is not complete (or error)
   2595  * CURL_FORMADD_MEMORY         if a curl_httppost struct cannot be allocated
   2596  * CURL_FORMADD_MEMORY         if some allocation for string copying failed.
   2597  * CURL_FORMADD_ILLEGAL_ARRAY  if an illegal option is used in an array
   2598  *
   2599  ***************************************************************************/
   2600 typedef enum {
   2601   CURL_FORMADD_OK             CURL_DEPRECATED(7.56.0, ""), /* 1st, no error */
   2602 
   2603   CURL_FORMADD_MEMORY         CURL_DEPRECATED(7.56.0, ""),
   2604   CURL_FORMADD_OPTION_TWICE   CURL_DEPRECATED(7.56.0, ""),
   2605   CURL_FORMADD_NULL           CURL_DEPRECATED(7.56.0, ""),
   2606   CURL_FORMADD_UNKNOWN_OPTION CURL_DEPRECATED(7.56.0, ""),
   2607   CURL_FORMADD_INCOMPLETE     CURL_DEPRECATED(7.56.0, ""),
   2608   CURL_FORMADD_ILLEGAL_ARRAY  CURL_DEPRECATED(7.56.0, ""),
   2609   /* libcurl was built with form api disabled */
   2610   CURL_FORMADD_DISABLED       CURL_DEPRECATED(7.56.0, ""),
   2611 
   2612   CURL_FORMADD_LAST /* last */
   2613 } CURLFORMcode;
   2614 
   2615 /*
   2616  * NAME curl_formadd()
   2617  *
   2618  * DESCRIPTION
   2619  *
   2620  * Pretty advanced function for building multi-part formposts. Each invoke
   2621  * adds one part that together construct a full post. Then use
   2622  * CURLOPT_HTTPPOST to send it off to libcurl.
   2623  */
   2624 CURL_EXTERN CURLFORMcode CURL_DEPRECATED(7.56.0, "Use curl_mime_init()")
   2625 curl_formadd(struct curl_httppost **httppost,
   2626              struct curl_httppost **last_post,
   2627              ...);
   2628 
   2629 /*
   2630  * callback function for curl_formget()
   2631  * The void *arg pointer will be the one passed as second argument to
   2632  *   curl_formget().
   2633  * The character buffer passed to it must not be freed.
   2634  * Should return the buffer length passed to it as the argument "len" on
   2635  *   success.
   2636  */
   2637 typedef size_t (*curl_formget_callback)(void *arg, const char *buf,
   2638                                         size_t len);
   2639 
   2640 /*
   2641  * NAME curl_formget()
   2642  *
   2643  * DESCRIPTION
   2644  *
   2645  * Serialize a curl_httppost struct built with curl_formadd().
   2646  * Accepts a void pointer as second argument which will be passed to
   2647  * the curl_formget_callback function.
   2648  * Returns 0 on success.
   2649  */
   2650 CURL_EXTERN int CURL_DEPRECATED(7.56.0, "")
   2651 curl_formget(struct curl_httppost *form, void *arg,
   2652              curl_formget_callback append);
   2653 /*
   2654  * NAME curl_formfree()
   2655  *
   2656  * DESCRIPTION
   2657  *
   2658  * Free a multipart formpost previously built with curl_formadd().
   2659  */
   2660 CURL_EXTERN void CURL_DEPRECATED(7.56.0, "Use curl_mime_free()")
   2661 curl_formfree(struct curl_httppost *form);
   2662 
   2663 /*
   2664  * NAME curl_getenv()
   2665  *
   2666  * DESCRIPTION
   2667  *
   2668  * Returns a malloc()'ed string that MUST be curl_free()ed after usage is
   2669  * complete. DEPRECATED - see lib/README.curlx
   2670  */
   2671 CURL_EXTERN char *curl_getenv(const char *variable);
   2672 
   2673 /*
   2674  * NAME curl_version()
   2675  *
   2676  * DESCRIPTION
   2677  *
   2678  * Returns a static ASCII string of the libcurl version.
   2679  */
   2680 CURL_EXTERN char *curl_version(void);
   2681 
   2682 /*
   2683  * NAME curl_easy_escape()
   2684  *
   2685  * DESCRIPTION
   2686  *
   2687  * Escapes URL strings (converts all letters consider illegal in URLs to their
   2688  * %XX versions). This function returns a new allocated string or NULL if an
   2689  * error occurred.
   2690  */
   2691 CURL_EXTERN char *curl_easy_escape(CURL *handle,
   2692                                    const char *string,
   2693                                    int length);
   2694 
   2695 /* the previous version: */
   2696 CURL_EXTERN char *curl_escape(const char *string,
   2697                               int length);
   2698 
   2699 
   2700 /*
   2701  * NAME curl_easy_unescape()
   2702  *
   2703  * DESCRIPTION
   2704  *
   2705  * Unescapes URL encoding in strings (converts all %XX codes to their 8bit
   2706  * versions). This function returns a new allocated string or NULL if an error
   2707  * occurred.
   2708  * Conversion Note: On non-ASCII platforms the ASCII %XX codes are
   2709  * converted into the host encoding.
   2710  */
   2711 CURL_EXTERN char *curl_easy_unescape(CURL *handle,
   2712                                      const char *string,
   2713                                      int length,
   2714                                      int *outlength);
   2715 
   2716 /* the previous version */
   2717 CURL_EXTERN char *curl_unescape(const char *string,
   2718                                 int length);
   2719 
   2720 /*
   2721  * NAME curl_free()
   2722  *
   2723  * DESCRIPTION
   2724  *
   2725  * Provided for de-allocation in the same translation unit that did the
   2726  * allocation. Added in libcurl 7.10
   2727  */
   2728 CURL_EXTERN void curl_free(void *p);
   2729 
   2730 /*
   2731  * NAME curl_global_init()
   2732  *
   2733  * DESCRIPTION
   2734  *
   2735  * curl_global_init() should be invoked exactly once for each application that
   2736  * uses libcurl and before any call of other libcurl functions.
   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_init(long flags);
   2743 
   2744 /*
   2745  * NAME curl_global_init_mem()
   2746  *
   2747  * DESCRIPTION
   2748  *
   2749  * curl_global_init() or curl_global_init_mem() should be invoked exactly once
   2750  * for each application that uses libcurl. This function can be used to
   2751  * initialize libcurl and set user defined memory management callback
   2752  * functions. Users can implement memory management routines to check for
   2753  * memory leaks, check for mis-use of the curl library etc. User registered
   2754  * callback routines will be invoked by this library instead of the system
   2755  * memory management routines like malloc, free etc.
   2756  */
   2757 CURL_EXTERN CURLcode curl_global_init_mem(long flags,
   2758                                           curl_malloc_callback m,
   2759                                           curl_free_callback f,
   2760                                           curl_realloc_callback r,
   2761                                           curl_strdup_callback s,
   2762                                           curl_calloc_callback c);
   2763 
   2764 /*
   2765  * NAME curl_global_cleanup()
   2766  *
   2767  * DESCRIPTION
   2768  *
   2769  * curl_global_cleanup() should be invoked exactly once for each application
   2770  * that uses libcurl
   2771  */
   2772 CURL_EXTERN void curl_global_cleanup(void);
   2773 
   2774 /*
   2775  * NAME curl_global_trace()
   2776  *
   2777  * DESCRIPTION
   2778  *
   2779  * curl_global_trace() can be invoked at application start to
   2780  * configure which components in curl should participate in tracing.
   2781 
   2782  * This function is thread-safe if CURL_VERSION_THREADSAFE is set in the
   2783  * curl_version_info_data.features flag (fetch by curl_version_info()).
   2784 
   2785  */
   2786 CURL_EXTERN CURLcode curl_global_trace(const char *config);
   2787 
   2788 /* linked-list structure for the CURLOPT_QUOTE option (and other) */
   2789 struct curl_slist {
   2790   char *data;
   2791   struct curl_slist *next;
   2792 };
   2793 
   2794 /*
   2795  * NAME curl_global_sslset()
   2796  *
   2797  * DESCRIPTION
   2798  *
   2799  * When built with multiple SSL backends, curl_global_sslset() allows to
   2800  * choose one. This function can only be called once, and it must be called
   2801  * *before* curl_global_init().
   2802  *
   2803  * The backend can be identified by the id (e.g. CURLSSLBACKEND_OPENSSL). The
   2804  * backend can also be specified via the name parameter (passing -1 as id). If
   2805  * both id and name are specified, the name will be ignored. If neither id nor
   2806  * name are specified, the function will fail with CURLSSLSET_UNKNOWN_BACKEND
   2807  * and set the "avail" pointer to the NULL-terminated list of available
   2808  * backends.
   2809  *
   2810  * Upon success, the function returns CURLSSLSET_OK.
   2811  *
   2812  * If the specified SSL backend is not available, the function returns
   2813  * CURLSSLSET_UNKNOWN_BACKEND and sets the "avail" pointer to a
   2814  * NULL-terminated list of available SSL backends.
   2815  *
   2816  * The SSL backend can be set only once. If it has already been set, a
   2817  * subsequent attempt to change it will result in a CURLSSLSET_TOO_LATE.
   2818  */
   2819 
   2820 struct curl_ssl_backend {
   2821   curl_sslbackend id;
   2822   const char *name;
   2823 };
   2824 typedef struct curl_ssl_backend curl_ssl_backend;
   2825 
   2826 typedef enum {
   2827   CURLSSLSET_OK = 0,
   2828   CURLSSLSET_UNKNOWN_BACKEND,
   2829   CURLSSLSET_TOO_LATE,
   2830   CURLSSLSET_NO_BACKENDS /* libcurl was built without any SSL support */
   2831 } CURLsslset;
   2832 
   2833 CURL_EXTERN CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
   2834                                           const curl_ssl_backend ***avail);
   2835 
   2836 /*
   2837  * NAME curl_slist_append()
   2838  *
   2839  * DESCRIPTION
   2840  *
   2841  * Appends a string to a linked list. If no list exists, it will be created
   2842  * first. Returns the new list, after appending.
   2843  */
   2844 CURL_EXTERN struct curl_slist *curl_slist_append(struct curl_slist *list,
   2845                                                  const char *data);
   2846 
   2847 /*
   2848  * NAME curl_slist_free_all()
   2849  *
   2850  * DESCRIPTION
   2851  *
   2852  * free a previously built curl_slist.
   2853  */
   2854 CURL_EXTERN void curl_slist_free_all(struct curl_slist *list);
   2855 
   2856 /*
   2857  * NAME curl_getdate()
   2858  *
   2859  * DESCRIPTION
   2860  *
   2861  * Returns the time, in seconds since 1 Jan 1970 of the time string given in
   2862  * the first argument. The time argument in the second parameter is unused
   2863  * and should be set to NULL.
   2864  */
   2865 CURL_EXTERN time_t curl_getdate(const char *p, const time_t *unused);
   2866 
   2867 /* info about the certificate chain, for SSL backends that support it. Asked
   2868    for with CURLOPT_CERTINFO / CURLINFO_CERTINFO */
   2869 struct curl_certinfo {
   2870   int num_of_certs;             /* number of certificates with information */
   2871   struct curl_slist **certinfo; /* for each index in this array, there is a
   2872                                    linked list with textual information for a
   2873                                    certificate in the format "name:content".
   2874                                    eg "Subject:foo", "Issuer:bar", etc. */
   2875 };
   2876 
   2877 /* Information about the SSL library used and the respective internal SSL
   2878    handle, which can be used to obtain further information regarding the
   2879    connection. Asked for with CURLINFO_TLS_SSL_PTR or CURLINFO_TLS_SESSION. */
   2880 struct curl_tlssessioninfo {
   2881   curl_sslbackend backend;
   2882   void *internals;
   2883 };
   2884 
   2885 #define CURLINFO_STRING   0x100000
   2886 #define CURLINFO_LONG     0x200000
   2887 #define CURLINFO_DOUBLE   0x300000
   2888 #define CURLINFO_SLIST    0x400000
   2889 #define CURLINFO_PTR      0x400000 /* same as SLIST */
   2890 #define CURLINFO_SOCKET   0x500000
   2891 #define CURLINFO_OFF_T    0x600000
   2892 #define CURLINFO_MASK     0x0fffff
   2893 #define CURLINFO_TYPEMASK 0xf00000
   2894 
   2895 typedef enum {
   2896   CURLINFO_NONE, /* first, never use this */
   2897   CURLINFO_EFFECTIVE_URL    = CURLINFO_STRING + 1,
   2898   CURLINFO_RESPONSE_CODE    = CURLINFO_LONG   + 2,
   2899   CURLINFO_TOTAL_TIME       = CURLINFO_DOUBLE + 3,
   2900   CURLINFO_NAMELOOKUP_TIME  = CURLINFO_DOUBLE + 4,
   2901   CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
   2902   CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
   2903   CURLINFO_SIZE_UPLOAD CURL_DEPRECATED(7.55.0, "Use CURLINFO_SIZE_UPLOAD_T")
   2904                             = CURLINFO_DOUBLE + 7,
   2905   CURLINFO_SIZE_UPLOAD_T    = CURLINFO_OFF_T  + 7,
   2906   CURLINFO_SIZE_DOWNLOAD
   2907                        CURL_DEPRECATED(7.55.0, "Use CURLINFO_SIZE_DOWNLOAD_T")
   2908                             = CURLINFO_DOUBLE + 8,
   2909   CURLINFO_SIZE_DOWNLOAD_T  = CURLINFO_OFF_T  + 8,
   2910   CURLINFO_SPEED_DOWNLOAD
   2911                        CURL_DEPRECATED(7.55.0, "Use CURLINFO_SPEED_DOWNLOAD_T")
   2912                             = CURLINFO_DOUBLE + 9,
   2913   CURLINFO_SPEED_DOWNLOAD_T = CURLINFO_OFF_T  + 9,
   2914   CURLINFO_SPEED_UPLOAD
   2915                        CURL_DEPRECATED(7.55.0, "Use CURLINFO_SPEED_UPLOAD_T")
   2916                             = CURLINFO_DOUBLE + 10,
   2917   CURLINFO_SPEED_UPLOAD_T   = CURLINFO_OFF_T  + 10,
   2918   CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
   2919   CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
   2920   CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
   2921   CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
   2922   CURLINFO_FILETIME_T       = CURLINFO_OFF_T  + 14,
   2923   CURLINFO_CONTENT_LENGTH_DOWNLOAD
   2924                        CURL_DEPRECATED(7.55.0,
   2925                                       "Use CURLINFO_CONTENT_LENGTH_DOWNLOAD_T")
   2926                             = CURLINFO_DOUBLE + 15,
   2927   CURLINFO_CONTENT_LENGTH_DOWNLOAD_T = CURLINFO_OFF_T  + 15,
   2928   CURLINFO_CONTENT_LENGTH_UPLOAD
   2929                        CURL_DEPRECATED(7.55.0,
   2930                                        "Use CURLINFO_CONTENT_LENGTH_UPLOAD_T")
   2931                             = CURLINFO_DOUBLE + 16,
   2932   CURLINFO_CONTENT_LENGTH_UPLOAD_T   = CURLINFO_OFF_T  + 16,
   2933   CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
   2934   CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
   2935   CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
   2936   CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
   2937   CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
   2938   CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
   2939   CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
   2940   CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
   2941   CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
   2942   CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
   2943   CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
   2944   CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
   2945   CURLINFO_LASTSOCKET  CURL_DEPRECATED(7.45.0, "Use CURLINFO_ACTIVESOCKET")
   2946                             = CURLINFO_LONG   + 29,
   2947   CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
   2948   CURLINFO_REDIRECT_URL     = CURLINFO_STRING + 31,
   2949   CURLINFO_PRIMARY_IP       = CURLINFO_STRING + 32,
   2950   CURLINFO_APPCONNECT_TIME  = CURLINFO_DOUBLE + 33,
   2951   CURLINFO_CERTINFO         = CURLINFO_PTR    + 34,
   2952   CURLINFO_CONDITION_UNMET  = CURLINFO_LONG   + 35,
   2953   CURLINFO_RTSP_SESSION_ID  = CURLINFO_STRING + 36,
   2954   CURLINFO_RTSP_CLIENT_CSEQ = CURLINFO_LONG   + 37,
   2955   CURLINFO_RTSP_SERVER_CSEQ = CURLINFO_LONG   + 38,
   2956   CURLINFO_RTSP_CSEQ_RECV   = CURLINFO_LONG   + 39,
   2957   CURLINFO_PRIMARY_PORT     = CURLINFO_LONG   + 40,
   2958   CURLINFO_LOCAL_IP         = CURLINFO_STRING + 41,
   2959   CURLINFO_LOCAL_PORT       = CURLINFO_LONG   + 42,
   2960   CURLINFO_TLS_SESSION CURL_DEPRECATED(7.48.0, "Use CURLINFO_TLS_SSL_PTR")
   2961                             = CURLINFO_PTR    + 43,
   2962   CURLINFO_ACTIVESOCKET     = CURLINFO_SOCKET + 44,
   2963   CURLINFO_TLS_SSL_PTR      = CURLINFO_PTR    + 45,
   2964   CURLINFO_HTTP_VERSION     = CURLINFO_LONG   + 46,
   2965   CURLINFO_PROXY_SSL_VERIFYRESULT = CURLINFO_LONG + 47,
   2966   CURLINFO_PROTOCOL    CURL_DEPRECATED(7.85.0, "Use CURLINFO_SCHEME")
   2967                             = CURLINFO_LONG   + 48,
   2968   CURLINFO_SCHEME           = CURLINFO_STRING + 49,
   2969   CURLINFO_TOTAL_TIME_T     = CURLINFO_OFF_T + 50,
   2970   CURLINFO_NAMELOOKUP_TIME_T = CURLINFO_OFF_T + 51,
   2971   CURLINFO_CONNECT_TIME_T   = CURLINFO_OFF_T + 52,
   2972   CURLINFO_PRETRANSFER_TIME_T = CURLINFO_OFF_T + 53,
   2973   CURLINFO_STARTTRANSFER_TIME_T = CURLINFO_OFF_T + 54,
   2974   CURLINFO_REDIRECT_TIME_T  = CURLINFO_OFF_T + 55,
   2975   CURLINFO_APPCONNECT_TIME_T = CURLINFO_OFF_T + 56,
   2976   CURLINFO_RETRY_AFTER      = CURLINFO_OFF_T + 57,
   2977   CURLINFO_EFFECTIVE_METHOD = CURLINFO_STRING + 58,
   2978   CURLINFO_PROXY_ERROR      = CURLINFO_LONG + 59,
   2979   CURLINFO_REFERER          = CURLINFO_STRING + 60,
   2980   CURLINFO_CAINFO           = CURLINFO_STRING + 61,
   2981   CURLINFO_CAPATH           = CURLINFO_STRING + 62,
   2982   CURLINFO_XFER_ID          = CURLINFO_OFF_T + 63,
   2983   CURLINFO_CONN_ID          = CURLINFO_OFF_T + 64,
   2984   CURLINFO_QUEUE_TIME_T     = CURLINFO_OFF_T + 65,
   2985   CURLINFO_USED_PROXY       = CURLINFO_LONG + 66,
   2986   CURLINFO_POSTTRANSFER_TIME_T = CURLINFO_OFF_T + 67,
   2987   CURLINFO_EARLYDATA_SENT_T = CURLINFO_OFF_T + 68,
   2988   CURLINFO_HTTPAUTH_USED    = CURLINFO_LONG + 69,
   2989   CURLINFO_PROXYAUTH_USED   = CURLINFO_LONG + 70,
   2990   CURLINFO_LASTONE          = 70
   2991 } CURLINFO;
   2992 
   2993 /* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
   2994    CURLINFO_HTTP_CODE */
   2995 #define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE
   2996 
   2997 typedef enum {
   2998   CURLCLOSEPOLICY_NONE, /* first, never use this */
   2999 
   3000   CURLCLOSEPOLICY_OLDEST,
   3001   CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
   3002   CURLCLOSEPOLICY_LEAST_TRAFFIC,
   3003   CURLCLOSEPOLICY_SLOWEST,
   3004   CURLCLOSEPOLICY_CALLBACK,
   3005 
   3006   CURLCLOSEPOLICY_LAST /* last, never use this */
   3007 } curl_closepolicy;
   3008 
   3009 #define CURL_GLOBAL_SSL (1<<0) /* no purpose since 7.57.0 */
   3010 #define CURL_GLOBAL_WIN32 (1<<1)
   3011 #define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
   3012 #define CURL_GLOBAL_NOTHING 0
   3013 #define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL
   3014 #define CURL_GLOBAL_ACK_EINTR (1<<2)
   3015 
   3016 
   3017 /*****************************************************************************
   3018  * Setup defines, protos etc for the sharing stuff.
   3019  */
   3020 
   3021 /* Different data locks for a single share */
   3022 typedef enum {
   3023   CURL_LOCK_DATA_NONE = 0,
   3024   /*  CURL_LOCK_DATA_SHARE is used internally to say that
   3025    *  the locking is just made to change the internal state of the share
   3026    *  itself.
   3027    */
   3028   CURL_LOCK_DATA_SHARE,
   3029   CURL_LOCK_DATA_COOKIE,
   3030   CURL_LOCK_DATA_DNS,
   3031   CURL_LOCK_DATA_SSL_SESSION,
   3032   CURL_LOCK_DATA_CONNECT,
   3033   CURL_LOCK_DATA_PSL,
   3034   CURL_LOCK_DATA_HSTS,
   3035   CURL_LOCK_DATA_LAST
   3036 } curl_lock_data;
   3037 
   3038 /* Different lock access types */
   3039 typedef enum {
   3040   CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
   3041   CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
   3042   CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
   3043   CURL_LOCK_ACCESS_LAST        /* never use */
   3044 } curl_lock_access;
   3045 
   3046 typedef void (*curl_lock_function)(CURL *handle,
   3047                                    curl_lock_data data,
   3048                                    curl_lock_access locktype,
   3049                                    void *userptr);
   3050 typedef void (*curl_unlock_function)(CURL *handle,
   3051                                      curl_lock_data data,
   3052                                      void *userptr);
   3053 
   3054 
   3055 typedef enum {
   3056   CURLSHE_OK,  /* all is fine */
   3057   CURLSHE_BAD_OPTION, /* 1 */
   3058   CURLSHE_IN_USE,     /* 2 */
   3059   CURLSHE_INVALID,    /* 3 */
   3060   CURLSHE_NOMEM,      /* 4 out of memory */
   3061   CURLSHE_NOT_BUILT_IN, /* 5 feature not present in lib */
   3062   CURLSHE_LAST        /* never use */
   3063 } CURLSHcode;
   3064 
   3065 typedef enum {
   3066   CURLSHOPT_NONE,  /* do not use */
   3067   CURLSHOPT_SHARE,   /* specify a data type to share */
   3068   CURLSHOPT_UNSHARE, /* specify which data type to stop sharing */
   3069   CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
   3070   CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
   3071   CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
   3072                            callback functions */
   3073   CURLSHOPT_LAST  /* never use */
   3074 } CURLSHoption;
   3075 
   3076 CURL_EXTERN CURLSH *curl_share_init(void);
   3077 CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *share, CURLSHoption option,
   3078                                          ...);
   3079 CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *share);
   3080 
   3081 /****************************************************************************
   3082  * Structures for querying information about the curl library at runtime.
   3083  */
   3084 
   3085 typedef enum {
   3086   CURLVERSION_FIRST,    /* 7.10 */
   3087   CURLVERSION_SECOND,   /* 7.11.1 */
   3088   CURLVERSION_THIRD,    /* 7.12.0 */
   3089   CURLVERSION_FOURTH,   /* 7.16.1 */
   3090   CURLVERSION_FIFTH,    /* 7.57.0 */
   3091   CURLVERSION_SIXTH,    /* 7.66.0 */
   3092   CURLVERSION_SEVENTH,  /* 7.70.0 */
   3093   CURLVERSION_EIGHTH,   /* 7.72.0 */
   3094   CURLVERSION_NINTH,    /* 7.75.0 */
   3095   CURLVERSION_TENTH,    /* 7.77.0 */
   3096   CURLVERSION_ELEVENTH, /* 7.87.0 */
   3097   CURLVERSION_TWELFTH,  /* 8.8.0 */
   3098   CURLVERSION_LAST /* never actually use this */
   3099 } CURLversion;
   3100 
   3101 /* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
   3102    basically all programs ever that want to get version information. It is
   3103    meant to be a built-in version number for what kind of struct the caller
   3104    expects. If the struct ever changes, we redefine the NOW to another enum
   3105    from above. */
   3106 #define CURLVERSION_NOW CURLVERSION_TWELFTH
   3107 
   3108 struct curl_version_info_data {
   3109   CURLversion age;          /* age of the returned struct */
   3110   const char *version;      /* LIBCURL_VERSION */
   3111   unsigned int version_num; /* LIBCURL_VERSION_NUM */
   3112   const char *host;         /* OS/host/cpu/machine when configured */
   3113   int features;             /* bitmask, see defines below */
   3114   const char *ssl_version;  /* human readable string */
   3115   long ssl_version_num;     /* not used anymore, always 0 */
   3116   const char *libz_version; /* human readable string */
   3117   /* protocols is terminated by an entry with a NULL protoname */
   3118   const char * const *protocols;
   3119 
   3120   /* The fields below this were added in CURLVERSION_SECOND */
   3121   const char *ares;
   3122   int ares_num;
   3123 
   3124   /* This field was added in CURLVERSION_THIRD */
   3125   const char *libidn;
   3126 
   3127   /* These field were added in CURLVERSION_FOURTH */
   3128 
   3129   /* Same as '_libiconv_version' if built with HAVE_ICONV */
   3130   int iconv_ver_num;
   3131 
   3132   const char *libssh_version; /* human readable string */
   3133 
   3134   /* These fields were added in CURLVERSION_FIFTH */
   3135   unsigned int brotli_ver_num; /* Numeric Brotli version
   3136                                   (MAJOR << 24) | (MINOR << 12) | PATCH */
   3137   const char *brotli_version; /* human readable string. */
   3138 
   3139   /* These fields were added in CURLVERSION_SIXTH */
   3140   unsigned int nghttp2_ver_num; /* Numeric nghttp2 version
   3141                                    (MAJOR << 16) | (MINOR << 8) | PATCH */
   3142   const char *nghttp2_version; /* human readable string. */
   3143   const char *quic_version;    /* human readable quic (+ HTTP/3) library +
   3144                                   version or NULL */
   3145 
   3146   /* These fields were added in CURLVERSION_SEVENTH */
   3147   const char *cainfo;          /* the built-in default CURLOPT_CAINFO, might
   3148                                   be NULL */
   3149   const char *capath;          /* the built-in default CURLOPT_CAPATH, might
   3150                                   be NULL */
   3151 
   3152   /* These fields were added in CURLVERSION_EIGHTH */
   3153   unsigned int zstd_ver_num; /* Numeric Zstd version
   3154                                   (MAJOR << 24) | (MINOR << 12) | PATCH */
   3155   const char *zstd_version; /* human readable string. */
   3156 
   3157   /* These fields were added in CURLVERSION_NINTH */
   3158   const char *hyper_version; /* human readable string. */
   3159 
   3160   /* These fields were added in CURLVERSION_TENTH */
   3161   const char *gsasl_version; /* human readable string. */
   3162 
   3163   /* These fields were added in CURLVERSION_ELEVENTH */
   3164   /* feature_names is terminated by an entry with a NULL feature name */
   3165   const char * const *feature_names;
   3166 
   3167   /* These fields were added in CURLVERSION_TWELFTH */
   3168   const char *rtmp_version; /* human readable string. */
   3169 };
   3170 typedef struct curl_version_info_data curl_version_info_data;
   3171 
   3172 #define CURL_VERSION_IPV6         (1<<0)  /* IPv6-enabled */
   3173 #define CURL_VERSION_KERBEROS4    (1<<1)  /* Kerberos V4 auth is supported
   3174                                              (deprecated) */
   3175 #define CURL_VERSION_SSL          (1<<2)  /* SSL options are present */
   3176 #define CURL_VERSION_LIBZ         (1<<3)  /* libz features are present */
   3177 #define CURL_VERSION_NTLM         (1<<4)  /* NTLM auth is supported */
   3178 #define CURL_VERSION_GSSNEGOTIATE (1<<5)  /* Negotiate auth is supported
   3179                                              (deprecated) */
   3180 #define CURL_VERSION_DEBUG        (1<<6)  /* Built with debug capabilities */
   3181 #define CURL_VERSION_ASYNCHDNS    (1<<7)  /* Asynchronous DNS resolves */
   3182 #define CURL_VERSION_SPNEGO       (1<<8)  /* SPNEGO auth is supported */
   3183 #define CURL_VERSION_LARGEFILE    (1<<9)  /* Supports files larger than 2GB */
   3184 #define CURL_VERSION_IDN          (1<<10) /* Internationized Domain Names are
   3185                                              supported */
   3186 #define CURL_VERSION_SSPI         (1<<11) /* Built against Windows SSPI */
   3187 #define CURL_VERSION_CONV         (1<<12) /* Character conversions supported */
   3188 #define CURL_VERSION_CURLDEBUG    (1<<13) /* Debug memory tracking supported */
   3189 #define CURL_VERSION_TLSAUTH_SRP  (1<<14) /* TLS-SRP auth is supported */
   3190 #define CURL_VERSION_NTLM_WB      (1<<15) /* NTLM delegation to winbind helper
   3191                                              is supported */
   3192 #define CURL_VERSION_HTTP2        (1<<16) /* HTTP2 support built-in */
   3193 #define CURL_VERSION_GSSAPI       (1<<17) /* Built against a GSS-API library */
   3194 #define CURL_VERSION_KERBEROS5    (1<<18) /* Kerberos V5 auth is supported */
   3195 #define CURL_VERSION_UNIX_SOCKETS (1<<19) /* Unix domain sockets support */
   3196 #define CURL_VERSION_PSL          (1<<20) /* Mozilla's Public Suffix List, used
   3197                                              for cookie domain verification */
   3198 #define CURL_VERSION_HTTPS_PROXY  (1<<21) /* HTTPS-proxy support built-in */
   3199 #define CURL_VERSION_MULTI_SSL    (1<<22) /* Multiple SSL backends available */
   3200 #define CURL_VERSION_BROTLI       (1<<23) /* Brotli features are present. */
   3201 #define CURL_VERSION_ALTSVC       (1<<24) /* Alt-Svc handling built-in */
   3202 #define CURL_VERSION_HTTP3        (1<<25) /* HTTP3 support built-in */
   3203 #define CURL_VERSION_ZSTD         (1<<26) /* zstd features are present */
   3204 #define CURL_VERSION_UNICODE      (1<<27) /* Unicode support on Windows */
   3205 #define CURL_VERSION_HSTS         (1<<28) /* HSTS is supported */
   3206 #define CURL_VERSION_GSASL        (1<<29) /* libgsasl is supported */
   3207 #define CURL_VERSION_THREADSAFE   (1<<30) /* libcurl API is thread-safe */
   3208 
   3209 /*
   3210  * NAME curl_version_info()
   3211  *
   3212  * DESCRIPTION
   3213  *
   3214  * This function returns a pointer to a static copy of the version info
   3215  * struct. See above.
   3216  */
   3217 CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);
   3218 
   3219 /*
   3220  * NAME curl_easy_strerror()
   3221  *
   3222  * DESCRIPTION
   3223  *
   3224  * The curl_easy_strerror function may be used to turn a CURLcode value
   3225  * into the equivalent human readable error string. This is useful
   3226  * for printing meaningful error messages.
   3227  */
   3228 CURL_EXTERN const char *curl_easy_strerror(CURLcode);
   3229 
   3230 /*
   3231  * NAME curl_share_strerror()
   3232  *
   3233  * DESCRIPTION
   3234  *
   3235  * The curl_share_strerror function may be used to turn a CURLSHcode value
   3236  * into the equivalent human readable error string. This is useful
   3237  * for printing meaningful error messages.
   3238  */
   3239 CURL_EXTERN const char *curl_share_strerror(CURLSHcode);
   3240 
   3241 /*
   3242  * NAME curl_easy_pause()
   3243  *
   3244  * DESCRIPTION
   3245  *
   3246  * The curl_easy_pause function pauses or unpauses transfers. Select the new
   3247  * state by setting the bitmask, use the convenience defines below.
   3248  *
   3249  */
   3250 CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
   3251 
   3252 #define CURLPAUSE_RECV      (1<<0)
   3253 #define CURLPAUSE_RECV_CONT (0)
   3254 
   3255 #define CURLPAUSE_SEND      (1<<2)
   3256 #define CURLPAUSE_SEND_CONT (0)
   3257 
   3258 #define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
   3259 #define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)
   3260 
   3261 /*
   3262  * NAME curl_easy_ssls_import()
   3263  *
   3264  * DESCRIPTION
   3265  *
   3266  * The curl_easy_ssls_import function adds a previously exported SSL session
   3267  * to the SSL session cache of the easy handle (or the underlying share).
   3268  */
   3269 CURL_EXTERN CURLcode curl_easy_ssls_import(CURL *handle,
   3270                                            const char *session_key,
   3271                                            const unsigned char *shmac,
   3272                                            size_t shmac_len,
   3273                                            const unsigned char *sdata,
   3274                                            size_t sdata_len);
   3275 
   3276 /* This is the curl_ssls_export_cb callback prototype. It
   3277  * is passed to curl_easy_ssls_export() to extract SSL sessions/tickets. */
   3278 typedef CURLcode curl_ssls_export_cb(CURL *handle,
   3279                                      void *userptr,
   3280                                      const char *session_key,
   3281                                      const unsigned char *shmac,
   3282                                      size_t shmac_len,
   3283                                      const unsigned char *sdata,
   3284                                      size_t sdata_len,
   3285                                      curl_off_t valid_until,
   3286                                      int ietf_tls_id,
   3287                                      const char *alpn,
   3288                                      size_t earlydata_max);
   3289 
   3290 /*
   3291  * NAME curl_easy_ssls_export()
   3292  *
   3293  * DESCRIPTION
   3294  *
   3295  * The curl_easy_ssls_export function iterates over all SSL sessions stored
   3296  * in the easy handle (or underlying share) and invokes the passed
   3297  * callback.
   3298  *
   3299  */
   3300 CURL_EXTERN CURLcode curl_easy_ssls_export(CURL *handle,
   3301                                            curl_ssls_export_cb *export_fn,
   3302                                            void *userptr);
   3303 
   3304 
   3305 #ifdef  __cplusplus
   3306 } /* end of extern "C" */
   3307 #endif
   3308 
   3309 /* unfortunately, the easy.h and multi.h include files need options and info
   3310   stuff before they can be included! */
   3311 #include "easy.h" /* nothing in curl is fun without the easy stuff */
   3312 #include "multi.h"
   3313 #include "urlapi.h"
   3314 #include "options.h"
   3315 #include "header.h"
   3316 #include "websockets.h"
   3317 #include "mprintf.h"
   3318 
   3319 /* the typechecker does not work in C++ (yet) */
   3320 #if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
   3321     ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
   3322     !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
   3323 #include "typecheck-gcc.h"
   3324 #else
   3325 #if defined(__STDC__) && (__STDC__ >= 1)
   3326 /* This preprocessor magic that replaces a call with the exact same call is
   3327    only done to make sure application authors pass exactly three arguments
   3328    to these functions. */
   3329 #define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
   3330 #define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
   3331 #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
   3332 #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
   3333 #endif /* __STDC__ >= 1 */
   3334 #endif /* gcc >= 4.3 && !__cplusplus && !CURL_DISABLE_TYPECHECK */
   3335 
   3336 #endif /* CURLINC_CURL_H */