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/*
Copyright (c) 2009-2011
Lars-Dominik Braun <lars@6xq.net>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef _WAITRESS_H
#define _WAITRESS_H
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>
#include <gnutls/gnutls.h>
#define WAITRESS_BUFFER_SIZE 10*1024
typedef enum {
WAITRESS_METHOD_GET = 0,
WAITRESS_METHOD_POST,
} WaitressMethod_t;
typedef enum {
WAITRESS_CB_RET_ERR,
WAITRESS_CB_RET_OK,
} WaitressCbReturn_t;
typedef enum {
WAITRESS_HANDLER_CONTINUE,
WAITRESS_HANDLER_DONE,
WAITRESS_HANDLER_ERR,
WAITRESS_HANDLER_ABORTED,
} WaitressHandlerReturn_t;
typedef struct {
char *url; /* splitted url, unusable */
bool tls;
const char *user;
const char *password;
const char *host;
const char *port;
const char *path; /* without leading '/' */
} WaitressUrl_t;
typedef enum {
WAITRESS_RET_ERR = 0,
WAITRESS_RET_OK,
WAITRESS_RET_STATUS_UNKNOWN,
WAITRESS_RET_NOTFOUND,
WAITRESS_RET_FORBIDDEN,
WAITRESS_RET_CONNECT_REFUSED,
WAITRESS_RET_SOCK_ERR,
WAITRESS_RET_GETADDR_ERR,
WAITRESS_RET_CB_ABORT,
WAITRESS_RET_PARTIAL_FILE,
WAITRESS_RET_TIMEOUT,
WAITRESS_RET_READ_ERR,
WAITRESS_RET_CONNECTION_CLOSED,
WAITRESS_RET_DECODING_ERR,
WAITRESS_RET_TLS_DISABLED,
WAITRESS_RET_TLS_WRITE_ERR,
WAITRESS_RET_TLS_READ_ERR,
WAITRESS_RET_TLS_HANDSHAKE_ERR,
} WaitressReturn_t;
/* reusable handle
*/
typedef struct {
WaitressUrl_t url;
WaitressMethod_t method;
const char *extraHeaders;
const char *postData;
WaitressUrl_t proxy;
/* extra data handed over to callback function */
void *data;
WaitressCbReturn_t (*callback) (void *, size_t, void *);
int timeout;
gnutls_certificate_credentials_t tlsCred;
bool tlsInitialized;
/* per-request data */
struct {
size_t contentLength, contentReceived, chunkSize;
int sockfd;
char *buf;
gnutls_session_t tlsSession;
/* first argument is WaitressHandle_t, but that's not defined here */
WaitressHandlerReturn_t (*dataHandler) (void *, char *, const size_t);
ssize_t (*read) (void *, char *, const size_t, ssize_t *);
ssize_t (*write) (void *, const char *, const size_t);
/* temporary return value storage */
WaitressReturn_t readWriteRet;
} request;
} WaitressHandle_t;
void WaitressInit (WaitressHandle_t *, const char *);
void WaitressFree (WaitressHandle_t *);
bool WaitressSetProxy (WaitressHandle_t *, const char *);
char *WaitressUrlEncode (const char *);
bool WaitressSetUrl (WaitressHandle_t *, const char *);
WaitressReturn_t WaitressFetchBuf (WaitressHandle_t *, char **);
WaitressReturn_t WaitressFetchCall (WaitressHandle_t *);
const char *WaitressErrorToStr (WaitressReturn_t);
#endif /* _WAITRESS_H */
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