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curl.h
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curl.h
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#ifndef CURLINC_CURL_H
#define CURLINC_CURL_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
/*
* If you have libcurl problems, all docs and details are found here:
* https://curl.se/libcurl/
*/
#ifdef CURL_NO_OLDIES
#define CURL_STRICTER
#endif
/* Compile-time deprecation macros. */
#if defined(__GNUC__) && \
((__GNUC__ > 12) || ((__GNUC__ == 12) && (__GNUC_MINOR__ >= 1 ))) && \
!defined(__INTEL_COMPILER) && \
!defined(CURL_DISABLE_DEPRECATION) && !defined(BUILDING_LIBCURL)
#define CURL_DEPRECATED(version, message) \
__attribute__((deprecated("since " # version ". " message)))
#define CURL_IGNORE_DEPRECATION(statements) \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
statements \
_Pragma("GCC diagnostic pop")
#else
#define CURL_DEPRECATED(version, message)
#define CURL_IGNORE_DEPRECATION(statements) statements
#endif
#include "curlver.h" /* libcurl version defines */
#include "system.h" /* determine things run-time */
#include <stdio.h>
#include <limits.h>
#if defined(__FreeBSD__) || defined(__MidnightBSD__)
/* Needed for __FreeBSD_version or __MidnightBSD_version symbol definition */
#include <sys/param.h>
#endif
/* The include stuff here below is mainly for time_t! */
#include <sys/types.h>
#include <time.h>
#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
#if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
/* The check above prevents the winsock2 inclusion if winsock.h already was
included, since they can't co-exist without problems */
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
libc5-based Linux systems. Only include it on systems that are known to
require it! */
#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
defined(__minix) || defined(__INTEGRITY) || \
defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__) || \
defined(__CYGWIN__) || defined(AMIGA) || defined(__NuttX__) || \
(defined(__FreeBSD_version) && (__FreeBSD_version < 800000)) || \
(defined(__MidnightBSD_version) && (__MidnightBSD_version < 100000)) || \
defined(__sun__) || defined(__serenity__) || defined(__vxworks__)
#include <sys/select.h>
#endif
#if !defined(_WIN32) && !defined(_WIN32_WCE)
#include <sys/socket.h>
#endif
#if !defined(_WIN32)
#include <sys/time.h>
#endif
/* Compatibility for non-Clang compilers */
#ifndef __has_declspec_attribute
# define __has_declspec_attribute(x) 0
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if defined(BUILDING_LIBCURL) || defined(CURL_STRICTER)
typedef struct Curl_easy CURL;
typedef struct Curl_share CURLSH;
#else
typedef void CURL;
typedef void CURLSH;
#endif
/*
* libcurl external API function linkage decorations.
*/
#ifdef CURL_STATICLIB
# define CURL_EXTERN
#elif defined(_WIN32) || \
(__has_declspec_attribute(dllexport) && \
__has_declspec_attribute(dllimport))
# if defined(BUILDING_LIBCURL)
# define CURL_EXTERN __declspec(dllexport)
# else
# define CURL_EXTERN __declspec(dllimport)
# endif
#elif defined(BUILDING_LIBCURL) && defined(CURL_HIDDEN_SYMBOLS)
# define CURL_EXTERN CURL_EXTERN_SYMBOL
#else
# define CURL_EXTERN
#endif
#ifndef curl_socket_typedef
/* socket typedef */
#if defined(_WIN32) && !defined(__LWIP_OPT_H__) && !defined(LWIP_HDR_OPT_H)
typedef SOCKET curl_socket_t;
#define CURL_SOCKET_BAD INVALID_SOCKET
#else
typedef int curl_socket_t;
#define CURL_SOCKET_BAD -1
#endif
#define curl_socket_typedef
#endif /* curl_socket_typedef */
/* enum for the different supported SSL backends */
typedef enum {
CURLSSLBACKEND_NONE = 0,
CURLSSLBACKEND_OPENSSL = 1,
CURLSSLBACKEND_GNUTLS = 2,
CURLSSLBACKEND_NSS CURL_DEPRECATED(8.3.0, "") = 3,
CURLSSLBACKEND_OBSOLETE4 = 4, /* Was QSOSSL. */
CURLSSLBACKEND_GSKIT CURL_DEPRECATED(8.3.0, "") = 5,
CURLSSLBACKEND_POLARSSL CURL_DEPRECATED(7.69.0, "") = 6,
CURLSSLBACKEND_WOLFSSL = 7,
CURLSSLBACKEND_SCHANNEL = 8,
CURLSSLBACKEND_SECURETRANSPORT = 9,
CURLSSLBACKEND_AXTLS CURL_DEPRECATED(7.61.0, "") = 10,
CURLSSLBACKEND_MBEDTLS = 11,
CURLSSLBACKEND_MESALINK CURL_DEPRECATED(7.82.0, "") = 12,
CURLSSLBACKEND_BEARSSL = 13,
CURLSSLBACKEND_RUSTLS = 14
} curl_sslbackend;
/* aliases for library clones and renames */
#define CURLSSLBACKEND_AWSLC CURLSSLBACKEND_OPENSSL
#define CURLSSLBACKEND_BORINGSSL CURLSSLBACKEND_OPENSSL
#define CURLSSLBACKEND_LIBRESSL CURLSSLBACKEND_OPENSSL
/* deprecated names: */
#define CURLSSLBACKEND_CYASSL CURLSSLBACKEND_WOLFSSL
#define CURLSSLBACKEND_DARWINSSL CURLSSLBACKEND_SECURETRANSPORT
struct curl_httppost {
struct curl_httppost *next; /* next entry in the list */
char *name; /* pointer to allocated name */
long namelength; /* length of name length */
char *contents; /* pointer to allocated data contents */
long contentslength; /* length of contents field, see also
CURL_HTTPPOST_LARGE */
char *buffer; /* pointer to allocated buffer contents */
long bufferlength; /* length of buffer field */
char *contenttype; /* Content-Type */
struct curl_slist *contentheader; /* list of extra headers for this form */
struct curl_httppost *more; /* if one field name has more than one
file, this link should link to following
files */
long flags; /* as defined below */
/* specified content is a file name */
#define CURL_HTTPPOST_FILENAME (1<<0)
/* specified content is a file name */
#define CURL_HTTPPOST_READFILE (1<<1)
/* name is only stored pointer do not free in formfree */
#define CURL_HTTPPOST_PTRNAME (1<<2)
/* contents is only stored pointer do not free in formfree */
#define CURL_HTTPPOST_PTRCONTENTS (1<<3)
/* upload file from buffer */
#define CURL_HTTPPOST_BUFFER (1<<4)
/* upload file from pointer contents */
#define CURL_HTTPPOST_PTRBUFFER (1<<5)
/* upload file contents by using the regular read callback to get the data and
pass the given pointer as custom pointer */
#define CURL_HTTPPOST_CALLBACK (1<<6)
/* use size in 'contentlen', added in 7.46.0 */
#define CURL_HTTPPOST_LARGE (1<<7)
char *showfilename; /* The file name to show. If not set, the
actual file name will be used (if this
is a file part) */
void *userp; /* custom pointer used for
HTTPPOST_CALLBACK posts */
curl_off_t contentlen; /* alternative length of contents
field. Used if CURL_HTTPPOST_LARGE is
set. Added in 7.46.0 */
};
/* This is a return code for the progress callback that, when returned, will
signal libcurl to continue executing the default progress function */
#define CURL_PROGRESSFUNC_CONTINUE 0x10000001
/* This is the CURLOPT_PROGRESSFUNCTION callback prototype. It is now
considered deprecated but was the only choice up until 7.31.0 */
typedef int (*curl_progress_callback)(void *clientp,
double dltotal,
double dlnow,
double ultotal,
double ulnow);
/* This is the CURLOPT_XFERINFOFUNCTION callback prototype. It was introduced
in 7.32.0, avoids the use of floating point numbers and provides more
detailed information. */
typedef int (*curl_xferinfo_callback)(void *clientp,
curl_off_t dltotal,
curl_off_t dlnow,
curl_off_t ultotal,
curl_off_t ulnow);
#ifndef CURL_MAX_READ_SIZE
/* The maximum receive buffer size configurable via CURLOPT_BUFFERSIZE. */
#define CURL_MAX_READ_SIZE (10*1024*1024)
#endif
#ifndef CURL_MAX_WRITE_SIZE
/* Tests have proven that 20K is a very bad buffer size for uploads on
Windows, while 16K for some odd reason performed a lot better.
We do the ifndef check to allow this value to easier be changed at build
time for those who feel adventurous. The practical minimum is about
400 bytes since libcurl uses a buffer of this size as a scratch area
(unrelated to network send operations). */
#define CURL_MAX_WRITE_SIZE 16384
#endif
#ifndef CURL_MAX_HTTP_HEADER
/* The only reason to have a max limit for this is to avoid the risk of a bad
server feeding libcurl with a never-ending header that will cause reallocs
infinitely */
#define CURL_MAX_HTTP_HEADER (100*1024)
#endif
/* This is a magic return code for the write callback that, when returned,
will signal libcurl to pause receiving on the current transfer. */
#define CURL_WRITEFUNC_PAUSE 0x10000001
/* This is a magic return code for the write callback that, when returned,
will signal an error from the callback. */
#define CURL_WRITEFUNC_ERROR 0xFFFFFFFF
typedef size_t (*curl_write_callback)(char *buffer,
size_t size,
size_t nitems,
void *outstream);
/* This callback will be called when a new resolver request is made */
typedef int (*curl_resolver_start_callback)(void *resolver_state,
void *reserved, void *userdata);
/* enumeration of file types */
typedef enum {
CURLFILETYPE_FILE = 0,
CURLFILETYPE_DIRECTORY,
CURLFILETYPE_SYMLINK,
CURLFILETYPE_DEVICE_BLOCK,
CURLFILETYPE_DEVICE_CHAR,
CURLFILETYPE_NAMEDPIPE,
CURLFILETYPE_SOCKET,
CURLFILETYPE_DOOR, /* is possible only on Sun Solaris now */
CURLFILETYPE_UNKNOWN /* should never occur */
} curlfiletype;
#define CURLFINFOFLAG_KNOWN_FILENAME (1<<0)
#define CURLFINFOFLAG_KNOWN_FILETYPE (1<<1)
#define CURLFINFOFLAG_KNOWN_TIME (1<<2)
#define CURLFINFOFLAG_KNOWN_PERM (1<<3)
#define CURLFINFOFLAG_KNOWN_UID (1<<4)
#define CURLFINFOFLAG_KNOWN_GID (1<<5)
#define CURLFINFOFLAG_KNOWN_SIZE (1<<6)
#define CURLFINFOFLAG_KNOWN_HLINKCOUNT (1<<7)
/* Information about a single file, used when doing FTP wildcard matching */
struct curl_fileinfo {
char *filename;
curlfiletype filetype;
time_t time; /* always zero! */
unsigned int perm;
int uid;
int gid;
curl_off_t size;
long int hardlinks;
struct {
/* If some of these fields is not NULL, it is a pointer to b_data. */
char *time;
char *perm;
char *user;
char *group;
char *target; /* pointer to the target filename of a symlink */
} strings;
unsigned int flags;
/* These are libcurl private struct fields. Previously used by libcurl, so
they must never be interfered with. */
char *b_data;
size_t b_size;
size_t b_used;
};
/* return codes for CURLOPT_CHUNK_BGN_FUNCTION */
#define CURL_CHUNK_BGN_FUNC_OK 0
#define CURL_CHUNK_BGN_FUNC_FAIL 1 /* tell the lib to end the task */
#define CURL_CHUNK_BGN_FUNC_SKIP 2 /* skip this chunk over */
/* if splitting of data transfer is enabled, this callback is called before
download of an individual chunk started. Note that parameter "remains" works
only for FTP wildcard downloading (for now), otherwise is not used */
typedef long (*curl_chunk_bgn_callback)(const void *transfer_info,
void *ptr,
int remains);
/* return codes for CURLOPT_CHUNK_END_FUNCTION */
#define CURL_CHUNK_END_FUNC_OK 0
#define CURL_CHUNK_END_FUNC_FAIL 1 /* tell the lib to end the task */
/* If splitting of data transfer is enabled this callback is called after
download of an individual chunk finished.
Note! After this callback was set then it have to be called FOR ALL chunks.
Even if downloading of this chunk was skipped in CHUNK_BGN_FUNC.
This is the reason why we don't need "transfer_info" parameter in this
callback and we are not interested in "remains" parameter too. */
typedef long (*curl_chunk_end_callback)(void *ptr);
/* return codes for FNMATCHFUNCTION */
#define CURL_FNMATCHFUNC_MATCH 0 /* string corresponds to the pattern */
#define CURL_FNMATCHFUNC_NOMATCH 1 /* pattern doesn't match the string */
#define CURL_FNMATCHFUNC_FAIL 2 /* an error occurred */
/* callback type for wildcard downloading pattern matching. If the
string matches the pattern, return CURL_FNMATCHFUNC_MATCH value, etc. */
typedef int (*curl_fnmatch_callback)(void *ptr,
const char *pattern,
const char *string);
/* These are the return codes for the seek callbacks */
#define CURL_SEEKFUNC_OK 0
#define CURL_SEEKFUNC_FAIL 1 /* fail the entire transfer */
#define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking can't be done, so
libcurl might try other means instead */
typedef int (*curl_seek_callback)(void *instream,
curl_off_t offset,
int origin); /* 'whence' */
/* This is a return code for the read callback that, when returned, will
signal libcurl to immediately abort the current transfer. */
#define CURL_READFUNC_ABORT 0x10000000
/* This is a return code for the read callback that, when returned, will
signal libcurl to pause sending data on the current transfer. */
#define CURL_READFUNC_PAUSE 0x10000001
/* Return code for when the trailing headers' callback has terminated
without any errors */
#define CURL_TRAILERFUNC_OK 0
/* Return code for when was an error in the trailing header's list and we
want to abort the request */
#define CURL_TRAILERFUNC_ABORT 1
typedef size_t (*curl_read_callback)(char *buffer,
size_t size,
size_t nitems,
void *instream);
typedef int (*curl_trailer_callback)(struct curl_slist **list,
void *userdata);
typedef enum {
CURLSOCKTYPE_IPCXN, /* socket created for a specific IP connection */
CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
CURLSOCKTYPE_LAST /* never use */
} curlsocktype;
/* The return code from the sockopt_callback can signal information back
to libcurl: */
#define CURL_SOCKOPT_OK 0
#define CURL_SOCKOPT_ERROR 1 /* causes libcurl to abort and return
CURLE_ABORTED_BY_CALLBACK */
#define CURL_SOCKOPT_ALREADY_CONNECTED 2
typedef int (*curl_sockopt_callback)(void *clientp,
curl_socket_t curlfd,
curlsocktype purpose);
struct curl_sockaddr {
int family;
int socktype;
int protocol;
unsigned int addrlen; /* addrlen was a socklen_t type before 7.18.0 but it
turned really ugly and painful on the systems that
lack this type */
struct sockaddr addr;
};
typedef curl_socket_t
(*curl_opensocket_callback)(void *clientp,
curlsocktype purpose,
struct curl_sockaddr *address);
typedef int
(*curl_closesocket_callback)(void *clientp, curl_socket_t item);
typedef enum {
CURLIOE_OK, /* I/O operation successful */
CURLIOE_UNKNOWNCMD, /* command was unknown to callback */
CURLIOE_FAILRESTART, /* failed to restart the read */
CURLIOE_LAST /* never use */
} curlioerr;
typedef enum {
CURLIOCMD_NOP, /* no operation */
CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
CURLIOCMD_LAST /* never use */
} curliocmd;
typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
int cmd,
void *clientp);
#ifndef CURL_DID_MEMORY_FUNC_TYPEDEFS
/*
* The following typedef's are signatures of malloc, free, realloc, strdup and
* calloc respectively. Function pointers of these types can be passed to the
* curl_global_init_mem() function to set user defined memory management
* callback routines.
*/
typedef void *(*curl_malloc_callback)(size_t size);
typedef void (*curl_free_callback)(void *ptr);
typedef void *(*curl_realloc_callback)(void *ptr, size_t size);
typedef char *(*curl_strdup_callback)(const char *str);
typedef void *(*curl_calloc_callback)(size_t nmemb, size_t size);
#define CURL_DID_MEMORY_FUNC_TYPEDEFS
#endif
/* the kind of data that is passed to information_callback */
typedef enum {
CURLINFO_TEXT = 0,
CURLINFO_HEADER_IN, /* 1 */
CURLINFO_HEADER_OUT, /* 2 */
CURLINFO_DATA_IN, /* 3 */
CURLINFO_DATA_OUT, /* 4 */
CURLINFO_SSL_DATA_IN, /* 5 */
CURLINFO_SSL_DATA_OUT, /* 6 */
CURLINFO_END
} curl_infotype;
typedef int (*curl_debug_callback)
(CURL *handle, /* the handle/transfer this concerns */
curl_infotype type, /* what kind of data */
char *data, /* points to the data */
size_t size, /* size of the data pointed to */
void *userptr); /* whatever the user please */
/* This is the CURLOPT_PREREQFUNCTION callback prototype. */
typedef int (*curl_prereq_callback)(void *clientp,
char *conn_primary_ip,
char *conn_local_ip,
int conn_primary_port,
int conn_local_port);
/* Return code for when the pre-request callback has terminated without
any errors */
#define CURL_PREREQFUNC_OK 0
/* Return code for when the pre-request callback wants to abort the
request */
#define CURL_PREREQFUNC_ABORT 1
/* All possible error codes from all sorts of curl functions. Future versions
may return other values, stay prepared.
Always add new return codes last. Never *EVER* remove any. The return
codes must remain the same!
*/
typedef enum {
CURLE_OK = 0,
CURLE_UNSUPPORTED_PROTOCOL, /* 1 */
CURLE_FAILED_INIT, /* 2 */
CURLE_URL_MALFORMAT, /* 3 */
CURLE_NOT_BUILT_IN, /* 4 - [was obsoleted in August 2007 for
7.17.0, reused in April 2011 for 7.21.5] */
CURLE_COULDNT_RESOLVE_PROXY, /* 5 */
CURLE_COULDNT_RESOLVE_HOST, /* 6 */
CURLE_COULDNT_CONNECT, /* 7 */
CURLE_WEIRD_SERVER_REPLY, /* 8 */
CURLE_REMOTE_ACCESS_DENIED, /* 9 a service was denied by the server
due to lack of access - when login fails
this is not returned. */
CURLE_FTP_ACCEPT_FAILED, /* 10 - [was obsoleted in April 2006 for
7.15.4, reused in Dec 2011 for 7.24.0]*/
CURLE_FTP_WEIRD_PASS_REPLY, /* 11 */
CURLE_FTP_ACCEPT_TIMEOUT, /* 12 - timeout occurred accepting server
[was obsoleted in August 2007 for 7.17.0,
reused in Dec 2011 for 7.24.0]*/
CURLE_FTP_WEIRD_PASV_REPLY, /* 13 */
CURLE_FTP_WEIRD_227_FORMAT, /* 14 */
CURLE_FTP_CANT_GET_HOST, /* 15 */
CURLE_HTTP2, /* 16 - A problem in the http2 framing layer.
[was obsoleted in August 2007 for 7.17.0,
reused in July 2014 for 7.38.0] */
CURLE_FTP_COULDNT_SET_TYPE, /* 17 */
CURLE_PARTIAL_FILE, /* 18 */
CURLE_FTP_COULDNT_RETR_FILE, /* 19 */
CURLE_OBSOLETE20, /* 20 - NOT USED */
CURLE_QUOTE_ERROR, /* 21 - quote command failure */
CURLE_HTTP_RETURNED_ERROR, /* 22 */
CURLE_WRITE_ERROR, /* 23 */
CURLE_OBSOLETE24, /* 24 - NOT USED */
CURLE_UPLOAD_FAILED, /* 25 - failed upload "command" */
CURLE_READ_ERROR, /* 26 - couldn't open/read from file */
CURLE_OUT_OF_MEMORY, /* 27 */
CURLE_OPERATION_TIMEDOUT, /* 28 - the timeout time was reached */
CURLE_OBSOLETE29, /* 29 - NOT USED */
CURLE_FTP_PORT_FAILED, /* 30 - FTP PORT operation failed */
CURLE_FTP_COULDNT_USE_REST, /* 31 - the REST command failed */
CURLE_OBSOLETE32, /* 32 - NOT USED */
CURLE_RANGE_ERROR, /* 33 - RANGE "command" didn't work */
CURLE_HTTP_POST_ERROR, /* 34 */
CURLE_SSL_CONNECT_ERROR, /* 35 - wrong when connecting with SSL */
CURLE_BAD_DOWNLOAD_RESUME, /* 36 - couldn't resume download */
CURLE_FILE_COULDNT_READ_FILE, /* 37 */
CURLE_LDAP_CANNOT_BIND, /* 38 */
CURLE_LDAP_SEARCH_FAILED, /* 39 */
CURLE_OBSOLETE40, /* 40 - NOT USED */
CURLE_FUNCTION_NOT_FOUND, /* 41 - NOT USED starting with 7.53.0 */
CURLE_ABORTED_BY_CALLBACK, /* 42 */
CURLE_BAD_FUNCTION_ARGUMENT, /* 43 */
CURLE_OBSOLETE44, /* 44 - NOT USED */
CURLE_INTERFACE_FAILED, /* 45 - CURLOPT_INTERFACE failed */
CURLE_OBSOLETE46, /* 46 - NOT USED */
CURLE_TOO_MANY_REDIRECTS, /* 47 - catch endless re-direct loops */
CURLE_UNKNOWN_OPTION, /* 48 - User specified an unknown option */
CURLE_SETOPT_OPTION_SYNTAX, /* 49 - Malformed setopt option */
CURLE_OBSOLETE50, /* 50 - NOT USED */
CURLE_OBSOLETE51, /* 51 - NOT USED */
CURLE_GOT_NOTHING, /* 52 - when this is a specific error */
CURLE_SSL_ENGINE_NOTFOUND, /* 53 - SSL crypto engine not found */
CURLE_SSL_ENGINE_SETFAILED, /* 54 - can not set SSL crypto engine as
default */
CURLE_SEND_ERROR, /* 55 - failed sending network data */
CURLE_RECV_ERROR, /* 56 - failure in receiving network data */
CURLE_OBSOLETE57, /* 57 - NOT IN USE */
CURLE_SSL_CERTPROBLEM, /* 58 - problem with the local certificate */
CURLE_SSL_CIPHER, /* 59 - couldn't use specified cipher */
CURLE_PEER_FAILED_VERIFICATION, /* 60 - peer's certificate or fingerprint
wasn't verified fine */
CURLE_BAD_CONTENT_ENCODING, /* 61 - Unrecognized/bad encoding */
CURLE_OBSOLETE62, /* 62 - NOT IN USE since 7.82.0 */
CURLE_FILESIZE_EXCEEDED, /* 63 - Maximum file size exceeded */
CURLE_USE_SSL_FAILED, /* 64 - Requested FTP SSL level failed */
CURLE_SEND_FAIL_REWIND, /* 65 - Sending the data requires a rewind
that failed */
CURLE_SSL_ENGINE_INITFAILED, /* 66 - failed to initialise ENGINE */
CURLE_LOGIN_DENIED, /* 67 - user, password or similar was not
accepted and we failed to login */
CURLE_TFTP_NOTFOUND, /* 68 - file not found on server */
CURLE_TFTP_PERM, /* 69 - permission problem on server */
CURLE_REMOTE_DISK_FULL, /* 70 - out of disk space on server */
CURLE_TFTP_ILLEGAL, /* 71 - Illegal TFTP operation */
CURLE_TFTP_UNKNOWNID, /* 72 - Unknown transfer ID */
CURLE_REMOTE_FILE_EXISTS, /* 73 - File already exists */
CURLE_TFTP_NOSUCHUSER, /* 74 - No such user */
CURLE_OBSOLETE75, /* 75 - NOT IN USE since 7.82.0 */
CURLE_OBSOLETE76, /* 76 - NOT IN USE since 7.82.0 */
CURLE_SSL_CACERT_BADFILE, /* 77 - could not load CACERT file, missing
or wrong format */
CURLE_REMOTE_FILE_NOT_FOUND, /* 78 - remote file not found */
CURLE_SSH, /* 79 - error from the SSH layer, somewhat
generic so the error message will be of
interest when this has happened */
CURLE_SSL_SHUTDOWN_FAILED, /* 80 - Failed to shut down the SSL
connection */
CURLE_AGAIN, /* 81 - socket is not ready for send/recv,
wait till it's ready and try again (Added
in 7.18.2) */
CURLE_SSL_CRL_BADFILE, /* 82 - could not load CRL file, missing or
wrong format (Added in 7.19.0) */
CURLE_SSL_ISSUER_ERROR, /* 83 - Issuer check failed. (Added in
7.19.0) */
CURLE_FTP_PRET_FAILED, /* 84 - a PRET command failed */
CURLE_RTSP_CSEQ_ERROR, /* 85 - mismatch of RTSP CSeq numbers */
CURLE_RTSP_SESSION_ERROR, /* 86 - mismatch of RTSP Session Ids */
CURLE_FTP_BAD_FILE_LIST, /* 87 - unable to parse FTP file list */
CURLE_CHUNK_FAILED, /* 88 - chunk callback reported error */
CURLE_NO_CONNECTION_AVAILABLE, /* 89 - No connection available, the
session will be queued */
CURLE_SSL_PINNEDPUBKEYNOTMATCH, /* 90 - specified pinned public key did not
match */
CURLE_SSL_INVALIDCERTSTATUS, /* 91 - invalid certificate status */
CURLE_HTTP2_STREAM, /* 92 - stream error in HTTP/2 framing layer
*/
CURLE_RECURSIVE_API_CALL, /* 93 - an api function was called from
inside a callback */
CURLE_AUTH_ERROR, /* 94 - an authentication function returned an
error */
CURLE_HTTP3, /* 95 - An HTTP/3 layer problem */
CURLE_QUIC_CONNECT_ERROR, /* 96 - QUIC connection error */
CURLE_PROXY, /* 97 - proxy handshake error */
CURLE_SSL_CLIENTCERT, /* 98 - client-side certificate required */
CURLE_UNRECOVERABLE_POLL, /* 99 - poll/select returned fatal error */
CURLE_TOO_LARGE, /* 100 - a value/data met its maximum */
CURLE_ECH_REQUIRED, /* 101 - ECH tried but failed */
CURL_LAST /* never use! */
} CURLcode;
#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
the obsolete stuff removed! */
/* Previously obsolete error code reused in 7.38.0 */
#define CURLE_OBSOLETE16 CURLE_HTTP2
/* Previously obsolete error codes reused in 7.24.0 */
#define CURLE_OBSOLETE10 CURLE_FTP_ACCEPT_FAILED
#define CURLE_OBSOLETE12 CURLE_FTP_ACCEPT_TIMEOUT
/* compatibility with older names */
#define CURLOPT_ENCODING CURLOPT_ACCEPT_ENCODING
#define CURLE_FTP_WEIRD_SERVER_REPLY CURLE_WEIRD_SERVER_REPLY
/* The following were added in 7.62.0 */
#define CURLE_SSL_CACERT CURLE_PEER_FAILED_VERIFICATION
/* The following were added in 7.21.5, April 2011 */
#define CURLE_UNKNOWN_TELNET_OPTION CURLE_UNKNOWN_OPTION
/* Added for 7.78.0 */
#define CURLE_TELNET_OPTION_SYNTAX CURLE_SETOPT_OPTION_SYNTAX
/* The following were added in 7.17.1 */
/* These are scheduled to disappear by 2009 */
#define CURLE_SSL_PEER_CERTIFICATE CURLE_PEER_FAILED_VERIFICATION
/* The following were added in 7.17.0 */
/* These are scheduled to disappear by 2009 */
#define CURLE_OBSOLETE CURLE_OBSOLETE50 /* no one should be using this! */
#define CURLE_BAD_PASSWORD_ENTERED CURLE_OBSOLETE46
#define CURLE_BAD_CALLING_ORDER CURLE_OBSOLETE44
#define CURLE_FTP_USER_PASSWORD_INCORRECT CURLE_OBSOLETE10
#define CURLE_FTP_CANT_RECONNECT CURLE_OBSOLETE16
#define CURLE_FTP_COULDNT_GET_SIZE CURLE_OBSOLETE32
#define CURLE_FTP_COULDNT_SET_ASCII CURLE_OBSOLETE29
#define CURLE_FTP_WEIRD_USER_REPLY CURLE_OBSOLETE12
#define CURLE_FTP_WRITE_ERROR CURLE_OBSOLETE20
#define CURLE_LIBRARY_NOT_FOUND CURLE_OBSOLETE40
#define CURLE_MALFORMAT_USER CURLE_OBSOLETE24
#define CURLE_SHARE_IN_USE CURLE_OBSOLETE57
#define CURLE_URL_MALFORMAT_USER CURLE_NOT_BUILT_IN
#define CURLE_FTP_ACCESS_DENIED CURLE_REMOTE_ACCESS_DENIED
#define CURLE_FTP_COULDNT_SET_BINARY CURLE_FTP_COULDNT_SET_TYPE
#define CURLE_FTP_QUOTE_ERROR CURLE_QUOTE_ERROR
#define CURLE_TFTP_DISKFULL CURLE_REMOTE_DISK_FULL
#define CURLE_TFTP_EXISTS CURLE_REMOTE_FILE_EXISTS
#define CURLE_HTTP_RANGE_ERROR CURLE_RANGE_ERROR
#define CURLE_FTP_SSL_FAILED CURLE_USE_SSL_FAILED
/* The following were added earlier */
#define CURLE_OPERATION_TIMEOUTED CURLE_OPERATION_TIMEDOUT
#define CURLE_HTTP_NOT_FOUND CURLE_HTTP_RETURNED_ERROR
#define CURLE_HTTP_PORT_FAILED CURLE_INTERFACE_FAILED
#define CURLE_FTP_COULDNT_STOR_FILE CURLE_UPLOAD_FAILED
#define CURLE_FTP_PARTIAL_FILE CURLE_PARTIAL_FILE
#define CURLE_FTP_BAD_DOWNLOAD_RESUME CURLE_BAD_DOWNLOAD_RESUME
#define CURLE_LDAP_INVALID_URL CURLE_OBSOLETE62
#define CURLE_CONV_REQD CURLE_OBSOLETE76
#define CURLE_CONV_FAILED CURLE_OBSOLETE75
/* This was the error code 50 in 7.7.3 and a few earlier versions, this
is no longer used by libcurl but is instead #defined here only to not
make programs break */
#define CURLE_ALREADY_COMPLETE 99999
/* Provide defines for really old option names */
#define CURLOPT_FILE CURLOPT_WRITEDATA /* name changed in 7.9.7 */
#define CURLOPT_INFILE CURLOPT_READDATA /* name changed in 7.9.7 */
#define CURLOPT_WRITEHEADER CURLOPT_HEADERDATA
/* Since long deprecated options with no code in the lib that does anything
with them. */
#define CURLOPT_WRITEINFO CURLOPT_OBSOLETE40
#define CURLOPT_CLOSEPOLICY CURLOPT_OBSOLETE72
#endif /* !CURL_NO_OLDIES */
/*
* Proxy error codes. Returned in CURLINFO_PROXY_ERROR if CURLE_PROXY was
* return for the transfers.
*/
typedef enum {
CURLPX_OK,
CURLPX_BAD_ADDRESS_TYPE,
CURLPX_BAD_VERSION,
CURLPX_CLOSED,
CURLPX_GSSAPI,
CURLPX_GSSAPI_PERMSG,
CURLPX_GSSAPI_PROTECTION,
CURLPX_IDENTD,
CURLPX_IDENTD_DIFFER,
CURLPX_LONG_HOSTNAME,
CURLPX_LONG_PASSWD,
CURLPX_LONG_USER,
CURLPX_NO_AUTH,
CURLPX_RECV_ADDRESS,
CURLPX_RECV_AUTH,
CURLPX_RECV_CONNECT,
CURLPX_RECV_REQACK,
CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
CURLPX_REPLY_CONNECTION_REFUSED,
CURLPX_REPLY_GENERAL_SERVER_FAILURE,
CURLPX_REPLY_HOST_UNREACHABLE,
CURLPX_REPLY_NETWORK_UNREACHABLE,
CURLPX_REPLY_NOT_ALLOWED,
CURLPX_REPLY_TTL_EXPIRED,
CURLPX_REPLY_UNASSIGNED,
CURLPX_REQUEST_FAILED,
CURLPX_RESOLVE_HOST,
CURLPX_SEND_AUTH,
CURLPX_SEND_CONNECT,
CURLPX_SEND_REQUEST,
CURLPX_UNKNOWN_FAIL,
CURLPX_UNKNOWN_MODE,
CURLPX_USER_REJECTED,
CURLPX_LAST /* never use */
} CURLproxycode;
/* This prototype applies to all conversion callbacks */
typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl, /* easy handle */
void *ssl_ctx, /* actually an OpenSSL
or WolfSSL SSL_CTX,
or an mbedTLS
mbedtls_ssl_config */
void *userptr);
typedef enum {
CURLPROXY_HTTP = 0, /* added in 7.10, new in 7.19.4 default is to use
CONNECT HTTP/1.1 */
CURLPROXY_HTTP_1_0 = 1, /* added in 7.19.4, force to use CONNECT
HTTP/1.0 */
CURLPROXY_HTTPS = 2, /* HTTPS but stick to HTTP/1 added in 7.52.0 */
CURLPROXY_HTTPS2 = 3, /* HTTPS and attempt HTTP/2 added in 8.2.0 */
CURLPROXY_SOCKS4 = 4, /* support added in 7.15.2, enum existed already
in 7.10 */
CURLPROXY_SOCKS5 = 5, /* added in 7.10 */
CURLPROXY_SOCKS4A = 6, /* added in 7.18.0 */
CURLPROXY_SOCKS5_HOSTNAME = 7 /* Use the SOCKS5 protocol but pass along the
host name rather than the IP address. added
in 7.18.0 */
} curl_proxytype; /* this enum was added in 7.10 */
/*
* Bitmasks for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH options:
*
* CURLAUTH_NONE - No HTTP authentication
* CURLAUTH_BASIC - HTTP Basic authentication (default)
* CURLAUTH_DIGEST - HTTP Digest authentication
* CURLAUTH_NEGOTIATE - HTTP Negotiate (SPNEGO) authentication
* CURLAUTH_GSSNEGOTIATE - Alias for CURLAUTH_NEGOTIATE (deprecated)
* CURLAUTH_NTLM - HTTP NTLM authentication
* CURLAUTH_DIGEST_IE - HTTP Digest authentication with IE flavour
* CURLAUTH_NTLM_WB - HTTP NTLM authentication delegated to winbind helper
* CURLAUTH_BEARER - HTTP Bearer token authentication
* CURLAUTH_ONLY - Use together with a single other type to force no
* authentication or just that single type
* CURLAUTH_ANY - All fine types set
* CURLAUTH_ANYSAFE - All fine types except Basic
*/
#define CURLAUTH_NONE ((unsigned long)0)
#define CURLAUTH_BASIC (((unsigned long)1)<<0)
#define CURLAUTH_DIGEST (((unsigned long)1)<<1)
#define CURLAUTH_NEGOTIATE (((unsigned long)1)<<2)
/* Deprecated since the advent of CURLAUTH_NEGOTIATE */
#define CURLAUTH_GSSNEGOTIATE CURLAUTH_NEGOTIATE
/* Used for CURLOPT_SOCKS5_AUTH to stay terminologically correct */
#define CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE
#define CURLAUTH_NTLM (((unsigned long)1)<<3)
#define CURLAUTH_DIGEST_IE (((unsigned long)1)<<4)
#ifndef CURL_NO_OLDIES
/* functionality removed since 8.8.0 */
#define CURLAUTH_NTLM_WB (((unsigned long)1)<<5)
#endif
#define CURLAUTH_BEARER (((unsigned long)1)<<6)
#define CURLAUTH_AWS_SIGV4 (((unsigned long)1)<<7)
#define CURLAUTH_ONLY (((unsigned long)1)<<31)
#define CURLAUTH_ANY (~CURLAUTH_DIGEST_IE)
#define CURLAUTH_ANYSAFE (~(CURLAUTH_BASIC|CURLAUTH_DIGEST_IE))
#define CURLSSH_AUTH_ANY ~0 /* all types supported by the server */
#define CURLSSH_AUTH_NONE 0 /* none allowed, silly but complete */
#define CURLSSH_AUTH_PUBLICKEY (1<<0) /* public/private key files */
#define CURLSSH_AUTH_PASSWORD (1<<1) /* password */
#define CURLSSH_AUTH_HOST (1<<2) /* host key files */
#define CURLSSH_AUTH_KEYBOARD (1<<3) /* keyboard interactive */
#define CURLSSH_AUTH_AGENT (1<<4) /* agent (ssh-agent, pageant...) */
#define CURLSSH_AUTH_GSSAPI (1<<5) /* gssapi (kerberos, ...) */
#define CURLSSH_AUTH_DEFAULT CURLSSH_AUTH_ANY
#define CURLGSSAPI_DELEGATION_NONE 0 /* no delegation (default) */
#define CURLGSSAPI_DELEGATION_POLICY_FLAG (1<<0) /* if permitted by policy */
#define CURLGSSAPI_DELEGATION_FLAG (1<<1) /* delegate always */
#define CURL_ERROR_SIZE 256
enum curl_khtype {
CURLKHTYPE_UNKNOWN,
CURLKHTYPE_RSA1,
CURLKHTYPE_RSA,
CURLKHTYPE_DSS,
CURLKHTYPE_ECDSA,
CURLKHTYPE_ED25519
};
struct curl_khkey {
const char *key; /* points to a null-terminated string encoded with base64
if len is zero, otherwise to the "raw" data */
size_t len;
enum curl_khtype keytype;
};
/* this is the set of return values expected from the curl_sshkeycallback
callback */
enum curl_khstat {
CURLKHSTAT_FINE_ADD_TO_FILE,
CURLKHSTAT_FINE,
CURLKHSTAT_REJECT, /* reject the connection, return an error */
CURLKHSTAT_DEFER, /* do not accept it, but we can't answer right now.
Causes a CURLE_PEER_FAILED_VERIFICATION error but the
connection will be left intact etc */
CURLKHSTAT_FINE_REPLACE, /* accept and replace the wrong key */
CURLKHSTAT_LAST /* not for use, only a marker for last-in-list */
};
/* this is the set of status codes pass in to the callback */
enum curl_khmatch {
CURLKHMATCH_OK, /* match */
CURLKHMATCH_MISMATCH, /* host found, key mismatch! */
CURLKHMATCH_MISSING, /* no matching host/key found */
CURLKHMATCH_LAST /* not for use, only a marker for last-in-list */
};
typedef int
(*curl_sshkeycallback) (CURL *easy, /* easy handle */
const struct curl_khkey *knownkey, /* known */
const struct curl_khkey *foundkey, /* found */
enum curl_khmatch, /* libcurl's view on the keys */
void *clientp); /* custom pointer passed with */
/* CURLOPT_SSH_KEYDATA */
typedef int
(*curl_sshhostkeycallback) (void *clientp,/* custom pointer passed */
/* with CURLOPT_SSH_HOSTKEYDATA */
int keytype, /* CURLKHTYPE */
const char *key, /* hostkey to check */
size_t keylen); /* length of the key */
/* return CURLE_OK to accept */
/* or something else to refuse */
/* parameter for the CURLOPT_USE_SSL option */
typedef enum {
CURLUSESSL_NONE, /* do not attempt to use SSL */
CURLUSESSL_TRY, /* try using SSL, proceed anyway otherwise */
CURLUSESSL_CONTROL, /* SSL for the control connection or fail */
CURLUSESSL_ALL, /* SSL for all communication or fail */
CURLUSESSL_LAST /* not an option, never use */
} curl_usessl;
/* Definition of bits for the CURLOPT_SSL_OPTIONS argument: */
/* - ALLOW_BEAST tells libcurl to allow the BEAST SSL vulnerability in the
name of improving interoperability with older servers. Some SSL libraries
have introduced work-arounds for this flaw but those work-arounds sometimes
make the SSL communication fail. To regain functionality with those broken
servers, a user can this way allow the vulnerability back. */
#define CURLSSLOPT_ALLOW_BEAST (1<<0)
/* - NO_REVOKE tells libcurl to disable certificate revocation checks for those
SSL backends where such behavior is present. */
#define CURLSSLOPT_NO_REVOKE (1<<1)
/* - NO_PARTIALCHAIN tells libcurl to *NOT* accept a partial certificate chain
if possible. The OpenSSL backend has this ability. */
#define CURLSSLOPT_NO_PARTIALCHAIN (1<<2)
/* - REVOKE_BEST_EFFORT tells libcurl to ignore certificate revocation offline
checks and ignore missing revocation list for those SSL backends where such
behavior is present. */
#define CURLSSLOPT_REVOKE_BEST_EFFORT (1<<3)
/* - CURLSSLOPT_NATIVE_CA tells libcurl to use standard certificate store of
operating system. Currently implemented under MS-Windows. */
#define CURLSSLOPT_NATIVE_CA (1<<4)
/* - CURLSSLOPT_AUTO_CLIENT_CERT tells libcurl to automatically locate and use
a client certificate for authentication. (Schannel) */
#define CURLSSLOPT_AUTO_CLIENT_CERT (1<<5)
/* The default connection attempt delay in milliseconds for happy eyeballs.
CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS.3 and happy-eyeballs-timeout-ms.d document
this value, keep them in sync. */
#define CURL_HET_DEFAULT 200L
/* The default connection upkeep interval in milliseconds. */
#define CURL_UPKEEP_INTERVAL_DEFAULT 60000L
#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
the obsolete stuff removed! */
/* Backwards compatibility with older names */
/* These are scheduled to disappear by 2009 */
#define CURLFTPSSL_NONE CURLUSESSL_NONE
#define CURLFTPSSL_TRY CURLUSESSL_TRY
#define CURLFTPSSL_CONTROL CURLUSESSL_CONTROL
#define CURLFTPSSL_ALL CURLUSESSL_ALL
#define CURLFTPSSL_LAST CURLUSESSL_LAST
#define curl_ftpssl curl_usessl
#endif /* !CURL_NO_OLDIES */
/* parameter for the CURLOPT_FTP_SSL_CCC option */
typedef enum {
CURLFTPSSL_CCC_NONE, /* do not send CCC */
CURLFTPSSL_CCC_PASSIVE, /* Let the server initiate the shutdown */
CURLFTPSSL_CCC_ACTIVE, /* Initiate the shutdown */
CURLFTPSSL_CCC_LAST /* not an option, never use */
} curl_ftpccc;
/* parameter for the CURLOPT_FTPSSLAUTH option */
typedef enum {
CURLFTPAUTH_DEFAULT, /* let libcurl decide */
CURLFTPAUTH_SSL, /* use "AUTH SSL" */
CURLFTPAUTH_TLS, /* use "AUTH TLS" */
CURLFTPAUTH_LAST /* not an option, never use */
} curl_ftpauth;
/* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
typedef enum {
CURLFTP_CREATE_DIR_NONE, /* do NOT create missing dirs! */
CURLFTP_CREATE_DIR, /* (FTP/SFTP) if CWD fails, try MKD and then CWD
again if MKD succeeded, for SFTP this does
similar magic */
CURLFTP_CREATE_DIR_RETRY, /* (FTP only) if CWD fails, try MKD and then CWD
again even if MKD failed! */
CURLFTP_CREATE_DIR_LAST /* not an option, never use */
} curl_ftpcreatedir;
/* parameter for the CURLOPT_FTP_FILEMETHOD option */
typedef enum {
CURLFTPMETHOD_DEFAULT, /* let libcurl pick */
CURLFTPMETHOD_MULTICWD, /* single CWD operation for each path part */
CURLFTPMETHOD_NOCWD, /* no CWD at all */
CURLFTPMETHOD_SINGLECWD, /* one CWD to full dir, then work on file */
CURLFTPMETHOD_LAST /* not an option, never use */
} curl_ftpmethod;
/* bitmask defines for CURLOPT_HEADEROPT */
#define CURLHEADER_UNIFIED 0
#define CURLHEADER_SEPARATE (1<<0)
/* CURLALTSVC_* are bits for the CURLOPT_ALTSVC_CTRL option */
#define CURLALTSVC_READONLYFILE (1<<2)
#define CURLALTSVC_H1 (1<<3)
#define CURLALTSVC_H2 (1<<4)