A cURL binding for LuaJIT. Missing some constants presumably, but functional

luajit-curl.lua

--[[
LuaJIT-cURL
Lucien Greathouse
LuaJIT FFI cURL binding aimed at cURL version 7.38.0.

Copyright (c) 2014 lucien Greathouse

This software is provided 'as-is', without any express
or implied warranty. In no event will the authors be held
liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, andto alter it and redistribute it
freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must
not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.
]]
local ffi = require("ffi")
local curl = ffi.load("libcurl")

if (jit.os == "Windows") then
	--Windows!
	ffi.cdef([[
		//windows layering
		enum {
			INVALID_SOCKET = ~0,
			SOCKET_BAD = ~0
		};
	]])
else
	--Not Windows!
	ffi.cdef([[
		typedef int socket_t;

		enum {
			SOCKET_BAD = -1
		};
	]])
end

ffi.cdef([[
	typedef int64_t time_t;
	typedef unsigned int size_t;

	typedef size_t (*curl_callback)(char *data, size_t size, size_t nmeb, void *userdata);
]])

--curlver.h
ffi.cdef([[
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2014, 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 http://curl.haxx.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.
 *
 ***************************************************************************/

enum {
	LIBCURL_VERSION_MAJOR = 7,
	LIBCURL_VERSION_MINOR = 38,
	LIBCURL_VERSION_PATCH = 0,
	LIBCURL_VERSION_NUM = 0x072600
}
]])

--cURL's type aliasing, built around curlbuild.h
ffi.cdef([[
	typedef int64_t curl_off_t;
]])

--Constants
ffi.cdef([[
enum {
	CURL_GLOBAL_SSL = (1<<0),
	CURL_GLOBAL_WIN32 = (1<<1),
	CURL_GLOBAL_ALL = (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32),
	CURL_GLOBAL_NOTHING = 0,
	CURL_GLOBAL_DEFAULT = CURL_GLOBAL_ALL,
	CURL_GLOBAL_ACK_EINTR = (1<<2)
};
]])

ffi.cdef([[
typedef void CURL;
typedef int curl_socket_t;
struct curl_httppost {
struct curl_httppost *next;
char *name;
long namelength;
char *contents;
long contentslength;
char *buffer;
long bufferlength;
char *contenttype;
struct curl_slist* contentheader;
struct curl_httppost *more;
long flags;
char *showfilename;
void *userp;
};
typedef int (*curl_progress_callback)(void *clientp,
double dltotal,
double dlnow,
double ultotal,
double ulnow);
typedef int (*curl_xferinfo_callback)(void *clientp,
curl_off_t dltotal,
curl_off_t dlnow,
curl_off_t ultotal,
curl_off_t ulnow);
typedef size_t (*curl_write_callback)(char *buffer,
size_t size,
size_t nitems,
void *outstream);
typedef enum {
CURLFILETYPE_FILE = 0,
CURLFILETYPE_DIRECTORY,
CURLFILETYPE_SYMLINK,
CURLFILETYPE_DEVICE_BLOCK,
CURLFILETYPE_DEVICE_CHAR,
CURLFILETYPE_NAMEDPIPE,
CURLFILETYPE_SOCKET,
CURLFILETYPE_DOOR,
CURLFILETYPE_UNKNOWN
} curlfiletype;
struct curl_fileinfo {
char *filename;
curlfiletype filetype;
time_t time;
unsigned int perm;
int uid;
int gid;
curl_off_t size;
long int hardlinks;
struct {
char *time;
char *perm;
char *user;
char *group;
char *target;
} strings;
unsigned int flags;
char * b_data;
size_t b_size;
size_t b_used;
};
typedef long (*curl_chunk_bgn_callback)(const void *transfer_info,
void *ptr,
int remains);
typedef long (*curl_chunk_end_callback)(void *ptr);
typedef int (*curl_fnmatch_callback)(void *ptr,
const char *pattern,
const char *string);
typedef int (*curl_seek_callback)(void *instream,
curl_off_t offset,
int origin);
typedef size_t (*curl_read_callback)(char *buffer,
size_t size,
size_t nitems,
void *instream);
typedef enum  {
CURLSOCKTYPE_IPCXN,
CURLSOCKTYPE_ACCEPT,
CURLSOCKTYPE_LAST
} curlsocktype;
typedef int (*curl_sockopt_callback)(void *clientp,
curl_socket_t curlfd,
curlsocktype purpose);
struct sockaddr {
uint8_t sa_family;
char sa_data[14];
};
struct curl_sockaddr {
int family;
int socktype;
int protocol;
unsigned int addrlen;
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,
CURLIOE_UNKNOWNCMD,
CURLIOE_FAILRESTART,
CURLIOE_LAST
} curlioerr;
typedef enum  {
CURLIOCMD_NOP,
CURLIOCMD_RESTARTREAD,
CURLIOCMD_LAST
} curliocmd;
typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
int cmd,
void *clientp);
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);
typedef enum {
CURLINFO_TEXT = 0,
CURLINFO_HEADER_IN,
CURLINFO_HEADER_OUT,
CURLINFO_DATA_IN,
CURLINFO_DATA_OUT,
CURLINFO_SSL_DATA_IN,
CURLINFO_SSL_DATA_OUT,
CURLINFO_END
} curl_infotype;
typedef int (*curl_debug_callback)
(CURL *handle,
curl_infotype type,
char *data,
size_t size,
void *userptr);
typedef enum {
CURLE_OK = 0,
CURLE_UNSUPPORTED_PROTOCOL,
CURLE_FAILED_INIT,
CURLE_URL_MALFORMAT,
CURLE_NOT_BUILT_IN,
CURLE_COULDNT_RESOLVE_PROXY,
CURLE_COULDNT_RESOLVE_HOST,
CURLE_COULDNT_CONNECT,
CURLE_FTP_WEIRD_SERVER_REPLY,
CURLE_REMOTE_ACCESS_DENIED,
CURLE_FTP_ACCEPT_FAILED,
CURLE_FTP_WEIRD_PASS_REPLY,
CURLE_FTP_ACCEPT_TIMEOUT,
CURLE_FTP_WEIRD_PASV_REPLY,
CURLE_FTP_WEIRD_227_FORMAT,
CURLE_FTP_CANT_GET_HOST,
CURLE_HTTP2,
CURLE_FTP_COULDNT_SET_TYPE,
CURLE_PARTIAL_FILE,
CURLE_FTP_COULDNT_RETR_FILE,
CURLE_OBSOLETE20,
CURLE_QUOTE_ERROR,
CURLE_HTTP_RETURNED_ERROR,
CURLE_WRITE_ERROR,
CURLE_OBSOLETE24,
CURLE_UPLOAD_FAILED,
CURLE_READ_ERROR,
CURLE_OUT_OF_MEMORY,
CURLE_OPERATION_TIMEDOUT,
CURLE_OBSOLETE29,
CURLE_FTP_PORT_FAILED,
CURLE_FTP_COULDNT_USE_REST,
CURLE_OBSOLETE32,
CURLE_RANGE_ERROR,
CURLE_HTTP_POST_ERROR,
CURLE_SSL_CONNECT_ERROR,
CURLE_BAD_DOWNLOAD_RESUME,
CURLE_FILE_COULDNT_READ_FILE,
CURLE_LDAP_CANNOT_BIND,
CURLE_LDAP_SEARCH_FAILED,
CURLE_OBSOLETE40,
CURLE_FUNCTION_NOT_FOUND,
CURLE_ABORTED_BY_CALLBACK,
CURLE_BAD_FUNCTION_ARGUMENT,
CURLE_OBSOLETE44,
CURLE_INTERFACE_FAILED,
CURLE_OBSOLETE46,
CURLE_TOO_MANY_REDIRECTS ,
CURLE_UNKNOWN_OPTION,
CURLE_TELNET_OPTION_SYNTAX ,
CURLE_OBSOLETE50,
CURLE_PEER_FAILED_VERIFICATION,
CURLE_GOT_NOTHING,
CURLE_SSL_ENGINE_NOTFOUND,
CURLE_SSL_ENGINE_SETFAILED,
CURLE_SEND_ERROR,
CURLE_RECV_ERROR,
CURLE_OBSOLETE57,
CURLE_SSL_CERTPROBLEM,
CURLE_SSL_CIPHER,
CURLE_SSL_CACERT,
CURLE_BAD_CONTENT_ENCODING,
CURLE_LDAP_INVALID_URL,
CURLE_FILESIZE_EXCEEDED,
CURLE_USE_SSL_FAILED,
CURLE_SEND_FAIL_REWIND,
CURLE_SSL_ENGINE_INITFAILED,
CURLE_LOGIN_DENIED,
CURLE_TFTP_NOTFOUND,
CURLE_TFTP_PERM,
CURLE_REMOTE_DISK_FULL,
CURLE_TFTP_ILLEGAL,
CURLE_TFTP_UNKNOWNID,
CURLE_REMOTE_FILE_EXISTS,
CURLE_TFTP_NOSUCHUSER,
CURLE_CONV_FAILED,
CURLE_CONV_REQD,
CURLE_SSL_CACERT_BADFILE,
CURLE_REMOTE_FILE_NOT_FOUND,
CURLE_SSH,
CURLE_SSL_SHUTDOWN_FAILED,
CURLE_AGAIN,
CURLE_SSL_CRL_BADFILE,
CURLE_SSL_ISSUER_ERROR,
CURLE_FTP_PRET_FAILED,
CURLE_RTSP_CSEQ_ERROR,
CURLE_RTSP_SESSION_ERROR,
CURLE_FTP_BAD_FILE_LIST,
CURLE_CHUNK_FAILED,
CURLE_NO_CONNECTION_AVAILABLE,
CURL_LAST
} CURLcode;
typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl,
void *ssl_ctx,
void *userptr);
typedef enum {
CURLPROXY_HTTP = 0,
CURLPROXY_HTTP_1_0 = 1,
CURLPROXY_SOCKS4 = 4,
CURLPROXY_SOCKS5 = 5,
CURLPROXY_SOCKS4A = 6,
CURLPROXY_SOCKS5_HOSTNAME = 7
} curl_proxytype;
enum curl_khtype {
CURLKHTYPE_UNKNOWN,
CURLKHTYPE_RSA1,
CURLKHTYPE_RSA,
CURLKHTYPE_DSS
};
struct curl_khkey {
const char *key;
size_t len;
enum curl_khtype keytype;
};
enum curl_khstat {
CURLKHSTAT_FINE_ADD_TO_FILE,
CURLKHSTAT_FINE,
CURLKHSTAT_REJECT,
CURLKHSTAT_DEFER,
CURLKHSTAT_LAST
};
enum curl_khmatch {
CURLKHMATCH_OK,
CURLKHMATCH_MISMATCH,
CURLKHMATCH_MISSING,
CURLKHMATCH_LAST
};
typedef int
(*curl_sshkeycallback) (CURL *easy,
const struct curl_khkey *knownkey,
const struct curl_khkey *foundkey,
enum curl_khmatch,
void *clientp);
typedef enum {
CURLUSESSL_NONE,
CURLUSESSL_TRY,
CURLUSESSL_CONTROL,
CURLUSESSL_ALL,
CURLUSESSL_LAST
} curl_usessl;
typedef enum {
CURLFTPSSL_CCC_NONE,
CURLFTPSSL_CCC_PASSIVE,
CURLFTPSSL_CCC_ACTIVE,
CURLFTPSSL_CCC_LAST
} curl_ftpccc;
typedef enum {
CURLFTPAUTH_DEFAULT,
CURLFTPAUTH_SSL,
CURLFTPAUTH_TLS,
CURLFTPAUTH_LAST
} curl_ftpauth;
typedef enum {
CURLFTP_CREATE_DIR_NONE,
CURLFTP_CREATE_DIR,
CURLFTP_CREATE_DIR_RETRY,
CURLFTP_CREATE_DIR_LAST
} curl_ftpcreatedir;
typedef enum {
CURLFTPMETHOD_DEFAULT,
CURLFTPMETHOD_MULTICWD,
CURLFTPMETHOD_NOCWD,
CURLFTPMETHOD_SINGLECWD,
CURLFTPMETHOD_LAST
} curl_ftpmethod;
typedef enum {
CURLOPT_WRITEDATA = 10000 + 1,
CURLOPT_URL = 10000 + 2,
CURLOPT_PORT = 0 + 3,
CURLOPT_PROXY = 10000 + 4,
CURLOPT_USERPWD = 10000 + 5,
CURLOPT_PROXYUSERPWD = 10000 + 6,
CURLOPT_RANGE = 10000 + 7,
CURLOPT_READDATA = 10000 + 9,
CURLOPT_ERRORBUFFER = 10000 + 10,
CURLOPT_WRITEFUNCTION = 20000 + 11,
CURLOPT_READFUNCTION = 20000 + 12,
CURLOPT_TIMEOUT = 0 + 13,
CURLOPT_INFILESIZE = 0 + 14,
CURLOPT_POSTFIELDS = 10000 + 15,
CURLOPT_REFERER = 10000 + 16,
CURLOPT_FTPPORT = 10000 + 17,
CURLOPT_USERAGENT = 10000 + 18,
CURLOPT_LOW_SPEED_LIMIT = 0 + 19,
CURLOPT_LOW_SPEED_TIME = 0 + 20,
CURLOPT_RESUME_FROM = 0 + 21,
CURLOPT_COOKIE = 10000 + 22,
CURLOPT_HTTPHEADER = 10000 + 23,
CURLOPT_HTTPPOST = 10000 + 24,
CURLOPT_SSLCERT = 10000 + 25,
CURLOPT_KEYPASSWD = 10000 + 26,
CURLOPT_CRLF = 0 + 27,
CURLOPT_QUOTE = 10000 + 28,
CURLOPT_HEADERDATA = 10000 + 29,
CURLOPT_COOKIEFILE = 10000 + 31,
CURLOPT_SSLVERSION = 0 + 32,
CURLOPT_TIMECONDITION = 0 + 33,
CURLOPT_TIMEVALUE = 0 + 34,
CURLOPT_CUSTOMREQUEST = 10000 + 36,
CURLOPT_STDERR = 10000 + 37,
CURLOPT_POSTQUOTE = 10000 + 39,
CURLOPT_OBSOLETE40 = 10000 + 40,
CURLOPT_VERBOSE = 0 + 41,
CURLOPT_HEADER = 0 + 42,
CURLOPT_NOPROGRESS = 0 + 43,
CURLOPT_NOBODY = 0 + 44,
CURLOPT_FAILONERROR = 0 + 45,
CURLOPT_UPLOAD = 0 + 46,
CURLOPT_POST = 0 + 47,
CURLOPT_DIRLISTONLY = 0 + 48,
CURLOPT_APPEND = 0 + 50,
CURLOPT_NETRC = 0 + 51,
CURLOPT_FOLLOWLOCATION = 0 + 52,
CURLOPT_TRANSFERTEXT = 0 + 53,
CURLOPT_PUT = 0 + 54,
CURLOPT_PROGRESSFUNCTION = 20000 + 56,
CURLOPT_PROGRESSDATA = 10000 + 57,
CURLOPT_AUTOREFERER = 0 + 58,
CURLOPT_PROXYPORT = 0 + 59,
CURLOPT_POSTFIELDSIZE = 0 + 60,
CURLOPT_HTTPPROXYTUNNEL = 0 + 61,
CURLOPT_INTERFACE = 10000 + 62,
CURLOPT_KRBLEVEL = 10000 + 63,
CURLOPT_SSL_VERIFYPEER = 0 + 64,
CURLOPT_CAINFO = 10000 + 65,
CURLOPT_MAXREDIRS = 0 + 68,
CURLOPT_FILETIME = 0 + 69,
CURLOPT_TELNETOPTIONS = 10000 + 70,
CURLOPT_MAXCONNECTS = 0 + 71,
CURLOPT_OBSOLETE72 = 0 + 72,
CURLOPT_FRESH_CONNECT = 0 + 74,
CURLOPT_FORBID_REUSE = 0 + 75,
CURLOPT_RANDOM_FILE = 10000 + 76,
CURLOPT_EGDSOCKET = 10000 + 77,
CURLOPT_CONNECTTIMEOUT = 0 + 78,
CURLOPT_HEADERFUNCTION = 20000 + 79,
CURLOPT_HTTPGET = 0 + 80,
CURLOPT_SSL_VERIFYHOST = 0 + 81,
CURLOPT_COOKIEJAR = 10000 + 82,
CURLOPT_SSL_CIPHER_LIST = 10000 + 83,
CURLOPT_HTTP_VERSION = 0 + 84,
CURLOPT_FTP_USE_EPSV = 0 + 85,
CURLOPT_SSLCERTTYPE = 10000 + 86,
CURLOPT_SSLKEY = 10000 + 87,
CURLOPT_SSLKEYTYPE = 10000 + 88,
CURLOPT_SSLENGINE = 10000 + 89,
CURLOPT_SSLENGINE_DEFAULT = 0 + 90,
CURLOPT_DNS_USE_GLOBAL_CACHE = 0 + 91,
CURLOPT_DNS_CACHE_TIMEOUT = 0 + 92,
CURLOPT_PREQUOTE = 10000 + 93,
CURLOPT_DEBUGFUNCTION = 20000 + 94,
CURLOPT_DEBUGDATA = 10000 + 95,
CURLOPT_COOKIESESSION = 0 + 96,
CURLOPT_CAPATH = 10000 + 97,
CURLOPT_BUFFERSIZE = 0 + 98,
CURLOPT_NOSIGNAL = 0 + 99,
CURLOPT_SHARE = 10000 + 100,
CURLOPT_PROXYTYPE = 0 + 101,
CURLOPT_ACCEPT_ENCODING = 10000 + 102,
CURLOPT_PRIVATE = 10000 + 103,
CURLOPT_HTTP200ALIASES = 10000 + 104,
CURLOPT_UNRESTRICTED_AUTH = 0 + 105,
CURLOPT_FTP_USE_EPRT = 0 + 106,
CURLOPT_HTTPAUTH = 0 + 107,
CURLOPT_SSL_CTX_FUNCTION = 20000 + 108,
CURLOPT_SSL_CTX_DATA = 10000 + 109,
CURLOPT_FTP_CREATE_MISSING_DIRS = 0 + 110,
CURLOPT_PROXYAUTH = 0 + 111,
CURLOPT_FTP_RESPONSE_TIMEOUT = 0 + 112,
CURLOPT_IPRESOLVE = 0 + 113,
CURLOPT_MAXFILESIZE = 0 + 114,
CURLOPT_INFILESIZE_LARGE = 30000 + 115,
CURLOPT_RESUME_FROM_LARGE = 30000 + 116,
CURLOPT_MAXFILESIZE_LARGE = 30000 + 117,
CURLOPT_NETRC_FILE = 10000 + 118,
CURLOPT_USE_SSL = 0 + 119,
CURLOPT_POSTFIELDSIZE_LARGE = 30000 + 120,
CURLOPT_TCP_NODELAY = 0 + 121,
CURLOPT_FTPSSLAUTH = 0 + 129,
CURLOPT_IOCTLFUNCTION = 20000 + 130,
CURLOPT_IOCTLDATA = 10000 + 131,
CURLOPT_FTP_ACCOUNT = 10000 + 134,
CURLOPT_COOKIELIST = 10000 + 135,
CURLOPT_IGNORE_CONTENT_LENGTH = 0 + 136,
CURLOPT_FTP_SKIP_PASV_IP = 0 + 137,
CURLOPT_FTP_FILEMETHOD = 0 + 138,
CURLOPT_LOCALPORT = 0 + 139,
CURLOPT_LOCALPORTRANGE = 0 + 140,
CURLOPT_CONNECT_ONLY = 0 + 141,
CURLOPT_CONV_FROM_NETWORK_FUNCTION = 20000 + 142,
CURLOPT_CONV_TO_NETWORK_FUNCTION = 20000 + 143,
CURLOPT_CONV_FROM_UTF8_FUNCTION = 20000 + 144,
CURLOPT_MAX_SEND_SPEED_LARGE = 30000 + 145,
CURLOPT_MAX_RECV_SPEED_LARGE = 30000 + 146,
CURLOPT_FTP_ALTERNATIVE_TO_USER = 10000 + 147,
CURLOPT_SOCKOPTFUNCTION = 20000 + 148,
CURLOPT_SOCKOPTDATA = 10000 + 149,
CURLOPT_SSL_SESSIONID_CACHE = 0 + 150,
CURLOPT_SSH_AUTH_TYPES = 0 + 151,
CURLOPT_SSH_PUBLIC_KEYFILE = 10000 + 152,
CURLOPT_SSH_PRIVATE_KEYFILE = 10000 + 153,
CURLOPT_FTP_SSL_CCC = 0 + 154,
CURLOPT_TIMEOUT_MS = 0 + 155,
CURLOPT_CONNECTTIMEOUT_MS = 0 + 156,
CURLOPT_HTTP_TRANSFER_DECODING = 0 + 157,
CURLOPT_HTTP_CONTENT_DECODING = 0 + 158,
CURLOPT_NEW_FILE_PERMS = 0 + 159,
CURLOPT_NEW_DIRECTORY_PERMS = 0 + 160,
CURLOPT_POSTREDIR = 0 + 161,
CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 = 10000 + 162,
CURLOPT_OPENSOCKETFUNCTION = 20000 + 163,
CURLOPT_OPENSOCKETDATA = 10000 + 164,
CURLOPT_COPYPOSTFIELDS = 10000 + 165,
CURLOPT_PROXY_TRANSFER_MODE = 0 + 166,
CURLOPT_SEEKFUNCTION = 20000 + 167,
CURLOPT_SEEKDATA = 10000 + 168,
CURLOPT_CRLFILE = 10000 + 169,
CURLOPT_ISSUERCERT = 10000 + 170,
CURLOPT_ADDRESS_SCOPE = 0 + 171,
CURLOPT_CERTINFO = 0 + 172,
CURLOPT_USERNAME = 10000 + 173,
CURLOPT_PASSWORD = 10000 + 174,
CURLOPT_PROXYUSERNAME = 10000 + 175,
CURLOPT_PROXYPASSWORD = 10000 + 176,
CURLOPT_NOPROXY = 10000 + 177,
CURLOPT_TFTP_BLKSIZE = 0 + 178,
CURLOPT_SOCKS5_GSSAPI_SERVICE = 10000 + 179,
CURLOPT_SOCKS5_GSSAPI_NEC = 0 + 180,
CURLOPT_PROTOCOLS = 0 + 181,
CURLOPT_REDIR_PROTOCOLS = 0 + 182,
CURLOPT_SSH_KNOWNHOSTS = 10000 + 183,
CURLOPT_SSH_KEYFUNCTION = 20000 + 184,
CURLOPT_SSH_KEYDATA = 10000 + 185,
CURLOPT_MAIL_FROM = 10000 + 186,
CURLOPT_MAIL_RCPT = 10000 + 187,
CURLOPT_FTP_USE_PRET = 0 + 188,
CURLOPT_RTSP_REQUEST = 0 + 189,
CURLOPT_RTSP_SESSION_ID = 10000 + 190,
CURLOPT_RTSP_STREAM_URI = 10000 + 191,
CURLOPT_RTSP_TRANSPORT = 10000 + 192,
CURLOPT_RTSP_CLIENT_CSEQ = 0 + 193,
CURLOPT_RTSP_SERVER_CSEQ = 0 + 194,
CURLOPT_INTERLEAVEDATA = 10000 + 195,
CURLOPT_INTERLEAVEFUNCTION = 20000 + 196,
CURLOPT_WILDCARDMATCH = 0 + 197,
CURLOPT_CHUNK_BGN_FUNCTION = 20000 + 198,
CURLOPT_CHUNK_END_FUNCTION = 20000 + 199,
CURLOPT_FNMATCH_FUNCTION = 20000 + 200,
CURLOPT_CHUNK_DATA = 10000 + 201,
CURLOPT_FNMATCH_DATA = 10000 + 202,
CURLOPT_RESOLVE = 10000 + 203,
CURLOPT_TLSAUTH_USERNAME = 10000 + 204,
CURLOPT_TLSAUTH_PASSWORD = 10000 + 205,
CURLOPT_TLSAUTH_TYPE = 10000 + 206,
CURLOPT_TRANSFER_ENCODING = 0 + 207,
CURLOPT_CLOSESOCKETFUNCTION = 20000 + 208,
CURLOPT_CLOSESOCKETDATA = 10000 + 209,
CURLOPT_GSSAPI_DELEGATION = 0 + 210,
CURLOPT_DNS_SERVERS = 10000 + 211,
CURLOPT_ACCEPTTIMEOUT_MS = 0 + 212,
CURLOPT_TCP_KEEPALIVE = 0 + 213,
CURLOPT_TCP_KEEPIDLE = 0 + 214,
CURLOPT_TCP_KEEPINTVL = 0 + 215,
CURLOPT_SSL_OPTIONS = 0 + 216,
CURLOPT_MAIL_AUTH = 10000 + 217,
CURLOPT_SASL_IR = 0 + 218,
CURLOPT_XFERINFOFUNCTION = 20000 + 219,
CURLOPT_XOAUTH2_BEARER = 10000 + 220,
CURLOPT_DNS_INTERFACE = 10000 + 221,
CURLOPT_DNS_LOCAL_IP4 = 10000 + 222,
CURLOPT_DNS_LOCAL_IP6 = 10000 + 223,
CURLOPT_LOGIN_OPTIONS = 10000 + 224,
CURLOPT_SSL_ENABLE_NPN = 0 + 225,
CURLOPT_SSL_ENABLE_ALPN = 0 + 226,
CURLOPT_EXPECT_100_TIMEOUT_MS = 0 + 227,
CURLOPT_PROXYHEADER = 10000 + 228,
CURLOPT_HEADEROPT = 0 + 229,
CURLOPT_LASTENTRY
} CURLoption;
enum {
CURL_HTTP_VERSION_NONE,
CURL_HTTP_VERSION_1_0,
CURL_HTTP_VERSION_1_1,
CURL_HTTP_VERSION_2_0,
CURL_HTTP_VERSION_LAST
};
enum {
CURL_RTSPREQ_NONE,
CURL_RTSPREQ_OPTIONS,
CURL_RTSPREQ_DESCRIBE,
CURL_RTSPREQ_ANNOUNCE,
CURL_RTSPREQ_SETUP,
CURL_RTSPREQ_PLAY,
CURL_RTSPREQ_PAUSE,
CURL_RTSPREQ_TEARDOWN,
CURL_RTSPREQ_GET_PARAMETER,
CURL_RTSPREQ_SET_PARAMETER,
CURL_RTSPREQ_RECORD,
CURL_RTSPREQ_RECEIVE,
CURL_RTSPREQ_LAST
};
enum CURL_NETRC_OPTION {
CURL_NETRC_IGNORED,
CURL_NETRC_OPTIONAL,
CURL_NETRC_REQUIRED,
CURL_NETRC_LAST
};
enum {
CURL_SSLVERSION_DEFAULT,
CURL_SSLVERSION_TLSv1,
CURL_SSLVERSION_SSLv2,
CURL_SSLVERSION_SSLv3,
CURL_SSLVERSION_TLSv1_0,
CURL_SSLVERSION_TLSv1_1,
CURL_SSLVERSION_TLSv1_2,
CURL_SSLVERSION_LAST
};
enum CURL_TLSAUTH {
CURL_TLSAUTH_NONE,
CURL_TLSAUTH_SRP,
CURL_TLSAUTH_LAST
};
typedef enum {
CURL_TIMECOND_NONE,
CURL_TIMECOND_IFMODSINCE,
CURL_TIMECOND_IFUNMODSINCE,
CURL_TIMECOND_LASTMOD,
CURL_TIMECOND_LAST
} curl_TimeCond;
 int (curl_strequal)(const char *s1, const char *s2);
 int (curl_strnequal)(const char *s1, const char *s2, size_t n);
typedef enum {
CURLFORM_NOTHING,
CURLFORM_COPYNAME,
CURLFORM_PTRNAME,
CURLFORM_NAMELENGTH,
CURLFORM_COPYCONTENTS,
CURLFORM_PTRCONTENTS,
CURLFORM_CONTENTSLENGTH,
CURLFORM_FILECONTENT,
CURLFORM_ARRAY,
CURLFORM_OBSOLETE,
CURLFORM_FILE,
CURLFORM_BUFFER,
CURLFORM_BUFFERPTR,
CURLFORM_BUFFERLENGTH,
CURLFORM_CONTENTTYPE,
CURLFORM_CONTENTHEADER,
CURLFORM_FILENAME,
CURLFORM_END,
CURLFORM_OBSOLETE2,
CURLFORM_STREAM,
CURLFORM_LASTENTRY
} CURLformoption;
struct curl_forms {
CURLformoption option;
const char     *value;
};
typedef enum {
CURL_FORMADD_OK,
CURL_FORMADD_MEMORY,
CURL_FORMADD_OPTION_TWICE,
CURL_FORMADD_NULL,
CURL_FORMADD_UNKNOWN_OPTION,
CURL_FORMADD_INCOMPLETE,
CURL_FORMADD_ILLEGAL_ARRAY,
CURL_FORMADD_DISABLED,
CURL_FORMADD_LAST
} CURLFORMcode;
 CURLFORMcode curl_formadd(struct curl_httppost **httppost,
struct curl_httppost **last_post,
...);
typedef size_t (*curl_formget_callback)(void *arg, const char *buf,
size_t len);
 int curl_formget(struct curl_httppost *form, void *arg,
curl_formget_callback append);
 void curl_formfree(struct curl_httppost *form);
 char *curl_getenv(const char *variable);
 char *curl_version(void);
 char *curl_easy_escape(CURL *handle,
const char *string,
int length);
 char *curl_escape(const char *string,
int length);
 char *curl_easy_unescape(CURL *handle,
const char *string,
int length,
int *outlength);
 char *curl_unescape(const char *string,
int length);
 void curl_free(void *p);
 CURLcode curl_global_init(long flags);
 CURLcode curl_global_init_mem(long flags,
curl_malloc_callback m,
curl_free_callback f,
curl_realloc_callback r,
curl_strdup_callback s,
curl_calloc_callback c);
 void curl_global_cleanup(void);
struct curl_slist {
char *data;
struct curl_slist *next;
};
 struct curl_slist *curl_slist_append(struct curl_slist *,
const char *);
 void curl_slist_free_all(struct curl_slist *);
 time_t curl_getdate(const char *p, const time_t *unused);
struct curl_certinfo {
int num_of_certs;
struct curl_slist **certinfo;
};
typedef enum {
CURLSSLBACKEND_NONE = 0,
CURLSSLBACKEND_OPENSSL = 1,
CURLSSLBACKEND_GNUTLS = 2,
CURLSSLBACKEND_NSS = 3,
CURLSSLBACKEND_QSOSSL = 4,
CURLSSLBACKEND_GSKIT = 5,
CURLSSLBACKEND_POLARSSL = 6,
CURLSSLBACKEND_CYASSL = 7,
CURLSSLBACKEND_SCHANNEL = 8,
CURLSSLBACKEND_DARWINSSL = 9,
CURLSSLBACKEND_AXTLS = 10
} curl_sslbackend;
struct curl_tlssessioninfo {
curl_sslbackend backend;
void *internals;
};
typedef enum {
CURLINFO_NONE,
CURLINFO_EFFECTIVE_URL    =1048576 + 1,
CURLINFO_RESPONSE_CODE    =2097152   + 2,
CURLINFO_TOTAL_TIME       =3145728 + 3,
CURLINFO_NAMELOOKUP_TIME  =3145728 + 4,
CURLINFO_CONNECT_TIME     =3145728 + 5,
CURLINFO_PRETRANSFER_TIME =3145728 + 6,
CURLINFO_SIZE_UPLOAD      =3145728 + 7,
CURLINFO_SIZE_DOWNLOAD    =3145728 + 8,
CURLINFO_SPEED_DOWNLOAD   =3145728 + 9,
CURLINFO_SPEED_UPLOAD     =3145728 + 10,
CURLINFO_HEADER_SIZE      =2097152   + 11,
CURLINFO_REQUEST_SIZE     =2097152   + 12,
CURLINFO_SSL_VERIFYRESULT =2097152   + 13,
CURLINFO_FILETIME         =2097152   + 14,
CURLINFO_CONTENT_LENGTH_DOWNLOAD   =3145728 + 15,
CURLINFO_CONTENT_LENGTH_UPLOAD     =3145728 + 16,
CURLINFO_STARTTRANSFER_TIME =3145728 + 17,
CURLINFO_CONTENT_TYPE     =1048576 + 18,
CURLINFO_REDIRECT_TIME    =3145728 + 19,
CURLINFO_REDIRECT_COUNT   =2097152   + 20,
CURLINFO_PRIVATE          =1048576 + 21,
CURLINFO_HTTP_CONNECTCODE =2097152   + 22,
CURLINFO_HTTPAUTH_AVAIL   =2097152   + 23,
CURLINFO_PROXYAUTH_AVAIL  =2097152   + 24,
CURLINFO_OS_ERRNO         =2097152   + 25,
CURLINFO_NUM_CONNECTS     =2097152   + 26,
CURLINFO_SSL_ENGINES      =4194304  + 27,
CURLINFO_COOKIELIST       =4194304  + 28,
CURLINFO_LASTSOCKET       =2097152   + 29,
CURLINFO_FTP_ENTRY_PATH   =1048576 + 30,
CURLINFO_REDIRECT_URL     =1048576 + 31,
CURLINFO_PRIMARY_IP       =1048576 + 32,
CURLINFO_APPCONNECT_TIME  =3145728 + 33,
CURLINFO_CERTINFO         =4194304  + 34,
CURLINFO_CONDITION_UNMET  =2097152   + 35,
CURLINFO_RTSP_SESSION_ID  =1048576 + 36,
CURLINFO_RTSP_CLIENT_CSEQ =2097152   + 37,
CURLINFO_RTSP_SERVER_CSEQ =2097152   + 38,
CURLINFO_RTSP_CSEQ_RECV   =2097152   + 39,
CURLINFO_PRIMARY_PORT     =2097152   + 40,
CURLINFO_LOCAL_IP         =1048576 + 41,
CURLINFO_LOCAL_PORT       =2097152   + 42,
CURLINFO_TLS_SESSION      =4194304  + 43,
CURLINFO_LASTONE          = 43
} CURLINFO;
typedef enum {
CURLCLOSEPOLICY_NONE,
CURLCLOSEPOLICY_OLDEST,
CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
CURLCLOSEPOLICY_LEAST_TRAFFIC,
CURLCLOSEPOLICY_SLOWEST,
CURLCLOSEPOLICY_CALLBACK,
CURLCLOSEPOLICY_LAST
} curl_closepolicy;
typedef enum {
CURL_LOCK_DATA_NONE = 0,
CURL_LOCK_DATA_SHARE,
CURL_LOCK_DATA_COOKIE,
CURL_LOCK_DATA_DNS,
CURL_LOCK_DATA_SSL_SESSION,
CURL_LOCK_DATA_CONNECT,
CURL_LOCK_DATA_LAST
} curl_lock_data;
typedef enum {
CURL_LOCK_ACCESS_NONE = 0,
CURL_LOCK_ACCESS_SHARED = 1,
CURL_LOCK_ACCESS_SINGLE = 2,
CURL_LOCK_ACCESS_LAST
} curl_lock_access;
typedef void (*curl_lock_function)(CURL *handle,
curl_lock_data data,
curl_lock_access locktype,
void *userptr);
typedef void (*curl_unlock_function)(CURL *handle,
curl_lock_data data,
void *userptr);
typedef void CURLSH;
typedef enum {
CURLSHE_OK,
CURLSHE_BAD_OPTION,
CURLSHE_IN_USE,
CURLSHE_INVALID,
CURLSHE_NOMEM,
CURLSHE_NOT_BUILT_IN,
CURLSHE_LAST
} CURLSHcode;
typedef enum {
CURLSHOPT_NONE,
CURLSHOPT_SHARE,
CURLSHOPT_UNSHARE,
CURLSHOPT_LOCKFUNC,
CURLSHOPT_UNLOCKFUNC,
CURLSHOPT_USERDATA,
CURLSHOPT_LAST
} CURLSHoption;
 CURLSH *curl_share_init(void);
 CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);
 CURLSHcode curl_share_cleanup(CURLSH *);
typedef enum {
CURLVERSION_FIRST,
CURLVERSION_SECOND,
CURLVERSION_THIRD,
CURLVERSION_FOURTH,
CURLVERSION_LAST
} CURLversion;
typedef struct {
CURLversion age;
const char *version;
unsigned int version_num;
const char *host;
int features;
const char *ssl_version;
long ssl_version_num;
const char *libz_version;
const char * const *protocols;
const char *ares;
int ares_num;
const char *libidn;
int iconv_ver_num;
const char *libssh_version;
} curl_version_info_data;
 curl_version_info_data *curl_version_info(CURLversion);
 const char *curl_easy_strerror(CURLcode);
 const char *curl_share_strerror(CURLSHcode);
 CURLcode curl_easy_pause(CURL *handle, int bitmask);
 CURL *curl_easy_init(void);
 CURLcode curl_easy_setopt(CURL *curl, CURLoption option, ...);
 CURLcode curl_easy_perform(CURL *curl);
 void curl_easy_cleanup(CURL *curl);
 CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ...);
 CURL* curl_easy_duphandle(CURL *curl);
 void curl_easy_reset(CURL *curl);
 CURLcode curl_easy_recv(CURL *curl, void *buffer, size_t buflen,
size_t *n);
 CURLcode curl_easy_send(CURL *curl, const void *buffer,
size_t buflen, size_t *n);
typedef void CURLM;
typedef enum {
CURLM_CALL_MULTI_PERFORM = -1,
CURLM_OK,
CURLM_BAD_HANDLE,
CURLM_BAD_EASY_HANDLE,
CURLM_OUT_OF_MEMORY,
CURLM_INTERNAL_ERROR,
CURLM_BAD_SOCKET,
CURLM_UNKNOWN_OPTION,
CURLM_ADDED_ALREADY,
CURLM_LAST
} CURLMcode;
typedef enum {
CURLMSG_NONE,
CURLMSG_DONE,
CURLMSG_LAST
} CURLMSG;
struct CURLMsg {
CURLMSG msg;
CURL *easy_handle;
union {
void *whatever;
CURLcode result;
} data;
};
typedef struct CURLMsg CURLMsg;
struct curl_waitfd {
curl_socket_t fd;
short events;
short revents;
};
typedef struct fd_set {
        unsigned int   fd_count;               /* how many are SET? */
        curl_socket_t  fd_array[64]; //FD_SETSIZE, 64 on my machine, TOFIX
} fd_set;
 CURLM *curl_multi_init(void);
 CURLMcode curl_multi_add_handle(CURLM *multi_handle,
CURL *curl_handle);
 CURLMcode curl_multi_remove_handle(CURLM *multi_handle,
CURL *curl_handle);
 CURLMcode curl_multi_fdset(CURLM *multi_handle,
fd_set *read_fd_set,
fd_set *write_fd_set,
fd_set *exc_fd_set,
int *max_fd);
 CURLMcode curl_multi_wait(CURLM *multi_handle,
struct curl_waitfd extra_fds[],
unsigned int extra_nfds,
int timeout_ms,
int *ret);
 CURLMcode curl_multi_perform(CURLM *multi_handle,
int *running_handles);
 CURLMcode curl_multi_cleanup(CURLM *multi_handle);
 CURLMsg *curl_multi_info_read(CURLM *multi_handle,
int *msgs_in_queue);
 const char *curl_multi_strerror(CURLMcode);
typedef int (*curl_socket_callback)(CURL *easy,
curl_socket_t s,
int what,
void *userp,
void *socketp);
typedef int (*curl_multi_timer_callback)(CURLM *multi,
long timeout_ms,
void *userp);
 CURLMcode curl_multi_socket(CURLM *multi_handle, curl_socket_t s,
int *running_handles);
 CURLMcode curl_multi_socket_action(CURLM *multi_handle,
curl_socket_t s,
int ev_bitmask,
int *running_handles);
 CURLMcode curl_multi_socket_all(CURLM *multi_handle,
int *running_handles);
 CURLMcode curl_multi_timeout(CURLM *multi_handle,
long *milliseconds);
typedef enum {
CURLMOPT_SOCKETFUNCTION = 20000 + 1,
CURLMOPT_SOCKETDATA = 10000 + 2,
CURLMOPT_PIPELINING = 0 + 3,
CURLMOPT_TIMERFUNCTION = 20000 + 4,
CURLMOPT_TIMERDATA = 10000 + 5,
CURLMOPT_MAXCONNECTS = 0 + 6,
CURLMOPT_MAX_HOST_CONNECTIONS = 0 + 7,
CURLMOPT_MAX_PIPELINE_LENGTH = 0 + 8,
CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE = 30000 + 9,
CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE = 30000 + 10,
CURLMOPT_PIPELINING_SITE_BL = 10000 + 11,
CURLMOPT_PIPELINING_SERVER_BL = 10000 + 12,
CURLMOPT_MAX_TOTAL_CONNECTIONS = 0 + 13,
CURLMOPT_LASTENTRY
} CURLMoption;
 CURLMcode curl_multi_setopt(CURLM *multi_handle,
CURLMoption option, ...);
 CURLMcode curl_multi_assign(CURLM *multi_handle,
curl_socket_t sockfd, void *sockp);
]])

return curl

simple.lua

local curl = require("luajit-curl")
local ch = curl.curl_easy_init()

if (ch) then
	curl.curl_easy_setopt(ch, curl.CURLOPT_URL, "http://example.com")
	curl.curl_easy_setopt(ch, curl.CURLOPT_FOLLOWLOCATION, 1)

	local result = curl.curl_easy_perform(ch)
	if (result ~= curl.CURLE_OK) then
		print("FAILURE:", ffi.string(curl.curl_easy_strerror(result)))
	end

	curl.curl_easy_cleanup(ch)
end