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Add restd library.

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NADAL Jean-Baptiste
2019-12-23 15:00:34 +01:00
parent 7b0f78af56
commit 14d3faae8d
11 changed files with 2377 additions and 51 deletions
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25
CMakeLists.txt
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@@ -1,25 +0,0 @@
# CMakeLists files in this project can
# refer to the root source directory of the project as ${HELLO_SOURCE_DIR} and
# to the root binary directory of the project as ${HELLO_BINARY_DIR}.
cmake_minimum_required (VERSION 3.0)
project (domo)
set(EXECUTABLE_OUTPUT_PATH "${CMAKE_SOURCE_DIR}/build/bin")
set(ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/build/lib")
set(LIBRARY_OUTPUT_PATH "${CMAKE_SOURCE_DIR}/build/lib")
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake-modules/")
#add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../libuv ${CMAKE_CURRENT_BINARY_DIR}/libuv)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../nats.c ${CMAKE_CURRENT_BINARY_DIR}/nats.c)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/../libsourcey ${CMAKE_CURRENT_BINARY_DIR}/libsourcey)
add_subdirectory(src)
add_custom_target (static_analysis
COMMAND echo "Static Analysis ......"
COMMAND ${CMAKE_SOURCE_DIR}/tools/static_analysis.sh ${CMAKE_SOURCE_DIR}/build
)
add_custom_target (valgrind
COMMAND valgrind --leak-check=full --trace-children=yes --malloc-fill=AE --free-fill=BD --track-origins=yes ${CMAKE_SOURCE_DIR}/build/bin/domo-iot
)

8
README.md
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@@ -1,5 +1,7 @@
https://auth0.com/docs/flows/guides/device-auth/call-api-device-auth https://auth0.com/docs/flows/guides/device-auth/call-api-device-auth
https://github.com/kozross/awesome-c
nikhilm.github.io/uvbook/An%20Introduction%20to%20libuv.pdf nikhilm.github.io/uvbook/An%20Introduction%20to%20libuv.pdf
https://github.com/lasote/async_http_request/ https://github.com/lasote/async_http_request/
@@ -11,3 +13,9 @@ https://github.com/liigo/tinyweb
https://github.com/dropbox/json11 https://github.com/dropbox/json11
https://github.com/lzpong/TinyWeb https://github.com/lzpong/TinyWeb
https://github.com/sinemetu1/twitc/
https://kore.io/
http://facil.io/

15
lib/CMakeLists.txt Normal file
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cmake_minimum_required (VERSION 3.0)
project (librestd)
add_definitions (-DBUILD_DEBUG)
include_directories (${CMAKE_SOURCE_DIR}/libevent/include)
include_directories (${CMAKE_SOURCE_DIR}/build/libevent/include)
include_directories (${CMAKE_SOURCE_DIR}/qlibc/include)
include_directories (${CMAKE_CURRENT_SOURCE_DIR}/include)
add_library(restd-static STATIC
src/restd_server.c
src/restd_http_handler.c
)

43
lib/include/restd.h Normal file
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/*!
* restd.h
*
* Copyright (c) 2015-2019, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 23/12/2019
*
*/
#ifndef _RESTD_H
#define _RESTD_H
/*------------------------------- INCLUDES ----------------------------------*/
#include "restd_server.h"
#include "restd_http_handler.h"
#ifdef __cplusplus
extern "C"
{
#endif
#ifdef __cplusplus
}
#endif
#endif /*_RESTD_H */

159
lib/include/restd_http_handler.h Normal file
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/*!
* restd_http_handler.h
*
* Copyright (c) 2015-2019, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 23/12/2019
*
*/
#ifndef _RESTD_HTTP_HANDLER_H
#define _RESTD_HTTP_HANDLER_H
/*------------------------------- INCLUDES ----------------------------------*/
/*----------------------------------------------------------------------------*\
| HTTP PROTOCOL SPECIFICS |
\*----------------------------------------------------------------------------*/
/* HTTP PROTOCOL CODES */
#define HTTP_PROTOCOL_09 "HTTP/0.9"
#define HTTP_PROTOCOL_10 "HTTP/1.0"
#define HTTP_PROTOCOL_11 "HTTP/1.1"
/* HTTP RESPONSE CODES */
#define HTTP_NO_RESPONSE (0)
#define HTTP_CODE_CONTINUE (100)
#define HTTP_CODE_OK (200)
#define HTTP_CODE_CREATED (201)
#define HTTP_CODE_NO_CONTENT (204)
#define HTTP_CODE_PARTIAL_CONTENT (206)
#define HTTP_CODE_MULTI_STATUS (207)
#define HTTP_CODE_MOVED_TEMPORARILY (302)
#define HTTP_CODE_NOT_MODIFIED (304)
#define HTTP_CODE_Brestd_REQUEST (400)
#define HTTP_CODE_UNAUTHORIZED (401)
#define HTTP_CODE_FORBIDDEN (403)
#define HTTP_CODE_NOT_FOUND (404)
#define HTTP_CODE_METHOD_NOT_ALLOWED (405)
#define HTTP_CODE_REQUEST_TIME_OUT (408)
#define HTTP_CODE_GONE (410)
#define HTTP_CODE_REQUEST_URI_TOO_LONG (414)
#define HTTP_CODE_LOCKED (423)
#define HTTP_CODE_INTERNAL_SERVER_ERROR (500)
#define HTTP_CODE_NOT_IMPLEMENTED (501)
#define HTTP_CODE_SERVICE_UNAVAILABLE (503)
/* DEFAULT BEHAVIORS */
#define HTTP_CRLF "\r\n"
#define HTTP_DEF_CONTENTTYPE "application/octet-stream"
/*----------------------------------------------------------------------------*\
| TYPEDEFS |
\*----------------------------------------------------------------------------*/
typedef struct restd_http_s restd_http_t;
/*!< Hook type */
#define RESTD_HOOK_ALL (0) /*!< call on each and every phases */
#define RESTD_HOOK_ON_CONNECT (1) /*!< call right after the establishment of connection */
#define RESTD_HOOK_AFTER_REQUESTLINE (1 << 2) /*!< call after parsing request line */
#define RESTD_HOOK_AFTER_HEADER (1 << 3) /*!< call after parsing all headers */
#define RESTD_HOOK_ON_BODY (1 << 4) /*!< call on every time body data received */
#define RESTD_HOOK_ON_REQUEST (1 << 5) /*!< call with complete request */
#define RESTD_HOOK_ON_CLOSE (1 << 6) /*!< call right before closing or next request */
enum restd_http_request_status_e
{
RESTD_HTTP_REQ_INIT = 0, /*!< initial state */
RESTD_HTTP_REQ_REQUESTLINE_DONE, /*!< received 1st line */
RESTD_HTTP_REQ_HEADER_DONE, /*!< received headers completely */
RESTD_HTTP_REQ_DONE, /*!< received body completely. no more data expected */
RESTD_HTTP_ERROR, /*!< unrecoverable error found. */
};
/*----------------------------------------------------------------------------*\
| PUBLIC FUNCTIONS |
\*----------------------------------------------------------------------------*/
extern int restd_http_handler(short event, restd_conn_t *conn, void *userdata);
extern enum restd_http_request_status_e restd_http_get_status(restd_conn_t *conn);
extern struct evbuffer *restd_http_get_inbuf(restd_conn_t *conn);
extern struct evbuffer *restd_http_get_outbuf(restd_conn_t *conn);
extern const char *restd_http_get_request_header(restd_conn_t *conn, const char *name);
extern off_t restd_http_get_content_length(restd_conn_t *conn);
extern size_t restd_http_get_content_length_stored(restd_conn_t *conn);
extern void *restd_http_get_content(restd_conn_t *conn, size_t maxsize, size_t *storedsize);
extern int restd_http_is_keepalive_request(restd_conn_t *conn);
extern int restd_http_set_response_header(restd_conn_t *conn, const char *name, const char *value);
extern const char *restd_http_get_response_header(restd_conn_t *conn, const char *name);
extern int restd_http_set_response_code(restd_conn_t *conn, int code, const char *reason);
extern int restd_http_set_response_content(restd_conn_t *conn, const char *contenttype, off_t size);
extern size_t restd_http_response(restd_conn_t *conn, int code, const char *contenttype, const void *data, off_t size);
extern size_t restd_http_send_header(restd_conn_t *conn);
extern size_t restd_http_send_data(restd_conn_t *conn, const void *data, size_t size);
extern size_t restd_http_send_chunk(restd_conn_t *conn, const void *data, size_t size);
extern const char *restd_http_get_reason(int code);
/*---------------------------------------------------------------------------*\
| DATA STRUCTURES |
\*---------------------------------------------------------------------------*/
struct restd_http_s
{
// HTTP Request
struct
{
enum restd_http_request_status_e status; /*!< request status. */
struct evbuffer *inbuf; /*!< input data buffer. */
// request line - available on REQ_REQUESTLINE_DONE.
char *method; /*!< request method ex) GET */
char *uri; /*!< url+query ex) /data%20path?query=the%20value */
char *httpver; /*!< version ex) HTTP/1.1 */
char *path; /*!< decoded path ex) /data path */
char *query; /*!< query string ex) query=the%20value */
// request header - available on REQ_HEADER_DONE.
qlisttbl_t *headers; /*!< parsed request header entries */
char *host; /*!< host ex) www.domain.com or www.domain.com:8080 */
char *domain; /*!< domain name ex) www.domain.com (no port number) */
off_t contentlength; /*!< value of Content-Length header.*/
size_t bodyin; /*!< bytes moved to in-buff */
} request;
// HTTP Response
struct
{
struct evbuffer *outbuf; /*!< output data buffer. */
bool frozen_header; /*!< indicator whether we sent header out or not */
// response headers
int code; /*!< response status-code */
char *reason; /*!< reason-phrase */
qlisttbl_t *headers; /*!< response header entries */
off_t contentlength; /*!< content length in response */
size_t bodyout; /*!< bytes added to out-buffer */
} response;
};
#endif /* _RESTD_HTTP_HANDLER_H */

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lib/include/restd_server.h Normal file
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@@ -0,0 +1,146 @@
/*!
* restd_server.h
*
* Copyright (c) 2015-2019, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 23/12/2019
*
*/
#ifndef _RESTD_SERVER_H
#define _RESTD_SERVER_H
/*------------------------------- INCLUDES ----------------------------------*/
#include <pthread.h>
#include <qlibc/qlibc.h>
/*------------------------------- TYPEDEFS ----------------------------------*/
typedef struct restd_server_s restd_server_t;
typedef struct restd_conn_s restd_conn_t;
/*------------------------------- DEFINE ----------------------------------*/
/*
* Return values of user callback.
*/
#define RESTD_OK (0) /*!< I'm done with this request. Escalate to other hooks. */
#define RESTD_TAKEOVER (1) /*!< I'll handle the buffer directly this time, skip next hook */
#define RESTD_DONE (2) /*!< We're done with this request but keep the connection open. */
#define RESTD_CLOSE (3) /*!< We're done with this request. Close as soon as we sent all data out. */
/*
* These flags are used for ad_log_level();
*/
enum restd_log_e
{
RESTD_LOG_DISABLE = 0,
RESTD_LOG_ERROR,
RESTD_LOG_WARN,
RESTD_LOG_INFO,
RESTD_LOG_DEBUG,
RESTD_LOG_DEBUG2,
};
/*---------------------------------------------------------------------------*\
| USER-CALLBACK |
\*---------------------------------------------------------------------------*/
/**
* User callback(hook) prototype.
*/
typedef int (*restd_callback)(short event, restd_conn_t *conn, void *userdata);
typedef void (*restd_userdata_free_cb)(restd_conn_t *conn, void *userdata);
/**
* Event types
*/
#define RESTD_EVENT_INIT (1) /*!< Call once upon new connection. */
#define RESTD_EVENT_READ (1 << 1) /*!< Call on read */
#define RESTD_EVENT_WRITE (1 << 2) /*!< Call on write. */
#define RESTD_EVENT_CLOSE (1 << 3) /*!< Call before closing. */
#define RESTD_EVENT_TIMEOUT (1 << 4) /*!< Timeout indicator, this flag will be set with AD_EVENT_CLOSE. */
#define RESTD_EVENT_SHUTDOWN (1 << 5) /*!< Shutdown indicator, this flag will be set with AD_EVENT_CLOSE. */
/**
* Defaults
*/
#define RESTD_NUM_USERDATA (2) /*!< Number of userdata. Currently 0 is for userdata, 1 is for extra. */
/*---------------------------------------------------------------------------*\
| DATA STRUCTURES |
\*---------------------------------------------------------------------------*/
/**
* Server info container.
*/
struct restd_server_s
{
int errcode; /*!< exit status. 0 for normal exit, non zero for error. */
pthread_t *thread; /*!< thread object. not null if server runs as a thread */
qhashtbl_t *options; /*!< server options */
qhashtbl_t *stats; /*!< internal statistics */
qlist_t *hooks; /*!< list of registered hooks */
struct evconnlistener *listener; /*!< listener */
struct event_base *evbase; /*!< event base */
struct bufferevent *notify_buffer; /*!< internal notification channel */
};
/**
* Connection structure.
*/
struct restd_conn_s
{
restd_server_t *server; /*!< reference pointer to server */
struct bufferevent *buffer; /*!< reference pointer to buffer */
struct evbuffer *in; /*!< in buffer */
struct evbuffer *out; /*!< out buffer */
int status; /*!< hook status such as AD_OK */
void *userdata[2]; /*!< userdata[0] for end user, userdata[1] for extra */
restd_userdata_free_cb userdata_free_cb[2]; /*!< callback to release user data */
char *method; /*!< request method. set by protocol handler */
};
/*----------------------------------------------------------------------------*\
| PUBLIC FUNCTIONS |
\*----------------------------------------------------------------------------*/
enum restd_log_e restd_log_level(enum restd_log_e log_level);
extern restd_server_t *restd_server_new(void);
extern void restd_server_free(restd_server_t *server);
extern int restd_server_start(restd_server_t *server);
extern void restd_server_set_option(restd_server_t *server, const char *key, const char *value);
extern char *restd_server_get_option(restd_server_t *server, const char *key);
extern int restd_server_get_option_int(restd_server_t *server, const char *key);
extern void restd_server_register_hook(restd_server_t *server, restd_callback cb, void *userdata);
extern void restd_server_register_hook_on_method(restd_server_t *server, const char *method,
restd_callback cb, void *userdata);
extern void *restd_conn_set_extra(restd_conn_t *conn, const void *extra, restd_userdata_free_cb free_cb);
extern void *restd_conn_get_extra(restd_conn_t *conn);
extern void restd_conn_set_method(restd_conn_t *conn, char *method);
#endif /* _RESTD_SERVER_H */

187
lib/src/macro.h Normal file
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/******************************************************************************
* libasyncd
*
* Copyright (c) 2014 Seungyoung Kim.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifndef _MACRO_H
#define _MACRO_H
/*
* Macro Functions
*/
#define BUG_EXIT() ASSERT(false)
#define ASSERT(c) assert(c)
#define CONST_STRLEN(s) (sizeof(s) - 1)
#define IS_EMPTY_STR(s) ((*s == '\0') ? true : false)
#define IS_EQUAL_STR(s1,s2) (!strcmp(s1,s2))
#define ENDING_CHAR(s) (*(s + strlen(s) - 1))
#define NEW_OBJECT(t) ((t *)calloc(1, sizeof(t)))
#define DYNAMIC_VSPRINTF(s, f) do { \
size_t _strsize; \
for(_strsize = 1024; ; _strsize *= 2) { \
s = (char*)malloc(_strsize); \
if(s == NULL) { \
DEBUG("DYNAMIC_VSPRINTF(): can't allocate memory."); \
break; \
} \
va_list _arglist; \
va_start(_arglist, f); \
int _n = vsnprintf(s, _strsize, f, _arglist); \
va_end(_arglist); \
if(_n >= 0 && _n < _strsize) break; \
free(s); \
} \
} while(0)
/*
* Error message
*/
extern int _restd_log_level;
#define ERROROUT (stderr)
#define ERROR(fmt, args...) if (_restd_log_level > 0) { \
fprintf(ERROROUT, "[ERROR] " fmt "\n", ##args); \
}
#define WARN(fmt, args...) if (_restd_log_level >= 2) { \
fprintf(ERROROUT, "[WARN] " fmt "\n", ##args); \
}
#define INFO(fmt, args...) if (_restd_log_level >= 3) { \
fprintf(ERROROUT, "[INFO] " fmt "\n", ##args); \
}
/*
* Debug Macros
*/
#ifdef BUILD_DEBUG
#define DEBUGOUT (stdout)
#define DEBUG(fmt, args...) if (_restd_log_level >= 4) { \
fprintf(DEBUGOUT, "[DEBUG] " fmt " [%s(),%s:%d]\n", \
##args, __func__, __FILE__, __LINE__); \
}
#else
#define DEBUG(fms, args...)
#endif /* BUILD_DEBUG */
// debug timer
#include <sys/time.h>
#define TIMER_START() \
int _swno = 0; \
struct timeval _tv1, _tv2; \
gettimeofday(&_tv1, NULL)
#define TIMER_STOP(prefix) { \
gettimeofday(&_tv2, NULL); \
_swno++; \
struct timeval _diff; \
_diff.tv_sec = _tv2.tv_sec - _tv1.tv_sec; \
if(_tv2.tv_usec >= _tv1.tv_usec) { \
_diff.tv_usec = _tv2.tv_usec - _tv1.tv_usec; \
} else { \
_diff.tv_sec -= 1; \
_diff.tv_usec = 1000000 - _tv1.tv_usec + _tv2.tv_usec; \
} \
printf("TIMER(%d,%s,%d): %zus %dus (%s:%d)\n", \
getpid(), prefix, _swno, _diff.tv_sec, (int)(_diff.tv_usec), \
__FILE__, __LINE__); \
gettimeofday(&_tv1, NULL); \
}
/*
* Q_MUTEX Macros
*/
#ifndef _MULTI_THREADED
#define _MULTI_THREADED
#endif
#include <unistd.h>
#include <pthread.h>
#define Q_MUTEX_NEW(x,r) do { \
x = (qmutex_t *)calloc(1, sizeof(qmutex_t)); \
if(x == NULL) break; \
memset((void*)x, 0, sizeof(qmutex_t)); \
pthread_mutexattr_t _mutexattr; \
pthread_mutexattr_init(&_mutexattr); \
if(r == true) { \
pthread_mutexattr_settype(&_mutexattr, PTHREAD_MUTEX_RECURSIVE); \
} \
int _ret = pthread_mutex_init(&(x->mutex), &_mutexattr); \
pthread_mutexattr_destroy(&_mutexattr); \
if(_ret != 0) { \
char _errmsg[64]; \
strerror_r(_ret, _errmsg, sizeof(_errmsg)); \
DEBUG("Q_MUTEX: can't initialize mutex. [%d:%s]", _ret, _errmsg); \
free(x); \
x = NULL; \
} \
} while(0)
#define Q_MUTEX_LEAVE(x) do { \
if(x == NULL) break; \
if(!pthread_equal(x->owner, pthread_self())) { \
DEBUG("Q_MUTEX: unlock - owner mismatch."); \
} \
if((x->count--) < 0) x->count = 0; \
pthread_mutex_unlock(&(x->mutex)); \
} while(0)
#define MAX_MUTEX_LOCK_WAIT (5000)
#define Q_MUTEX_ENTER(x) do { \
if(x == NULL) break; \
while(true) { \
int _ret, i; \
for(i = 0; (_ret = pthread_mutex_trylock(&(x->mutex))) != 0 \
&& i < MAX_MUTEX_LOCK_WAIT; i++) { \
if(i == 0) { \
DEBUG("Q_MUTEX: mutex is already locked - retrying"); \
} \
usleep(1); \
} \
if(_ret == 0) break; \
char _errmsg[64]; \
strerror_r(_ret, _errmsg, sizeof(_errmsg)); \
DEBUG("Q_MUTEX: can't get lock - force to unlock. [%d:%s]", \
_ret, _errmsg); \
Q_MUTEX_LEAVE(x); \
} \
x->count++; \
x->owner = pthread_self(); \
} while(0)
#define Q_MUTEX_DESTROY(x) do { \
if(x == NULL) break; \
if(x->count != 0) DEBUG("Q_MUTEX: mutex counter is not 0."); \
int _ret; \
while((_ret = pthread_mutex_destroy(&(x->mutex))) != 0) { \
char _errmsg[64]; \
strerror_r(_ret, _errmsg, sizeof(_errmsg)); \
DEBUG("Q_MUTEX: force to unlock mutex. [%d:%s]", _ret, _errmsg); \
Q_MUTEX_LEAVE(x); \
} \
free(x); \
} while(0)
#endif /* _MACRO_H */

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/*!
* restd_http_handler.c
*
* Copyright (c) 2015-2019, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 23/12/2019
*
*/
// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
/*------------------------------- INCLUDES ----------------------------------*/
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <limits.h>
#include <assert.h>
#include <errno.h>
#include <event2/buffer.h>
#include <qlibc/qlibc.h>
#include "restd_server.h"
#include "restd_http_handler.h"
#include "macro.h"
#ifndef _DOXYGEN_SKIP
static restd_http_t *http_new(struct evbuffer *out);
static void http_free(restd_http_t *http);
static void http_free_cb(restd_conn_t *conn, void *userdata);
static size_t http_add_inbuf(struct evbuffer *buffer, restd_http_t *http,
size_t maxsize);
static int http_parser(restd_http_t *http, struct evbuffer *in);
static int parse_requestline(restd_http_t *http, char *line);
static int parse_headers(restd_http_t *http, struct evbuffer *in);
static int parse_body(restd_http_t *http, struct evbuffer *in);
static ssize_t parse_chunked_body(restd_http_t *http, struct evbuffer *in);
static bool isValidPathname(const char *path);
static void correctPathname(char *path);
static char *evbuffer_peekln(struct evbuffer *buffer, size_t *n_rerestd_out,
enum evbuffer_eol_style eol_style);
static ssize_t evbuffer_drainln(struct evbuffer *buffer, size_t *n_rerestd_out,
enum evbuffer_eol_style eol_style);
#endif
/**
* HTTP protocol handler hook.
*
* This hook provides an easy way to handle HTTP request/response.
*
* @note
* This hook must be registered at the top of hook chain.
*
* @code
* restd_server_t *server = restd_server_new();
* restd_server_register_hook(server, restd_http_handler, NULL);
* @endcode
*/
int restd_http_handler(short event, restd_conn_t *conn, void *userdata)
{
if (event & RESTD_EVENT_INIT)
{
DEBUG("==> HTTP INIT");
restd_http_t *http = http_new(conn->out);
if (http == NULL)
return RESTD_CLOSE;
restd_conn_set_extra(conn, http, http_free_cb);
return RESTD_OK;
}
else if (event & RESTD_EVENT_READ)
{
DEBUG("==> HTTP READ");
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
int status = http_parser(http, conn->in);
if (conn->method == NULL && http->request.method != NULL)
{
restd_conn_set_method(conn, http->request.method);
}
return status;
}
else if (event & RESTD_EVENT_WRITE)
{
DEBUG("==> HTTP WRITE");
return RESTD_OK;
}
else if (event & RESTD_EVENT_CLOSE)
{
DEBUG("==> HTTP CLOSE=%x (TIMEOUT=%d, SHUTDOWN=%d)",
event, event & RESTD_EVENT_TIMEOUT, event & RESTD_EVENT_SHUTDOWN);
return RESTD_OK;
}
BUG_EXIT();
return RESTD_CLOSE;
}
/**
* Return the request status.
*/
enum restd_http_request_status_e restd_http_get_status(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http == NULL)
return RESTD_HTTP_ERROR;
return http->request.status;
}
/*--------------------------------------------------------------------------*/
struct evbuffer *restd_http_get_inbuf(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
return http->request.inbuf;
}
/*--------------------------------------------------------------------------*/
struct evbuffer *restd_http_get_outbuf(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
return http->response.outbuf;
}
/**
* Get request header.
*
* @param name name of header.
*
* @return value of string if found, otherwise NULL.
*/
const char *restd_http_get_request_header(restd_conn_t *conn, const char *name)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
return http->request.headers->getstr(http->request.headers, name, false);
}
/**
* Return the size of content from the request.
*/
off_t restd_http_get_content_length(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
return http->request.contentlength;
}
/**
* Return the actual size of data stored in in-buffer
*/
size_t restd_http_get_content_length_stored(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
return evbuffer_get_length(http->request.inbuf);
}
/**
* Remove content from the in-buffer.
*
* The return data gets null terminated for convenience. For an example,
* if it reads 3 bytes, it will allocate 4 bytes and the 4th byte will
* be set to null terminator. `storedsized` will still return 3.
*
* @param maxsize maximum length of data to read. 0 to read everything.
* @param storedsize the size of data read and stored in the return.
*/
void *restd_http_get_content(restd_conn_t *conn, size_t maxsize, size_t *storedsize)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
size_t inbuflen = evbuffer_get_length(http->request.inbuf);
size_t readlen =
(maxsize == 0) ? inbuflen : ((inbuflen < maxsize) ? inbuflen : maxsize);
if (readlen == 0)
return NULL;
void *data = malloc(readlen + 1);
if (data == NULL)
return NULL;
size_t removedlen = evbuffer_remove(http->request.inbuf, data, readlen);
((char *)data)[removedlen] = '\0';
if (storedsize)
*storedsize = removedlen;
return data;
}
/**
* Return whether the request is keep-alive request or not.
*
* @return 1 if keep-alive request, otherwise 0.
*/
int restd_http_is_keepalive_request(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->request.httpver == NULL)
{
return 0;
}
const char *connection = restd_http_get_request_header(conn, "Connection");
if (!strcmp(http->request.httpver, HTTP_PROTOCOL_11))
{
// In HTTP/1.1, Keep-Alive is on by default unless explicitly specified.
if (connection != NULL && !strcmp(connection, "close"))
{
return 0;
}
return 1;
}
else
{
// In older version, Keep-Alive is off by default unless requested.
if (connection != NULL && (!strcmp(connection, "Keep-Alive") || !strcmp(connection, "TE")))
{
return 1;
}
return 0;
}
}
/**
* Set response header.
*
* @param name name of header.
* @param value value string to set. NULL to remove the header.
*
* @return 0 on success, -1 if we already sent it out.
*/
int restd_http_set_response_header(restd_conn_t *conn, const char *name,
const char *value)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.frozen_header)
{
return -1;
}
if (value != NULL)
{
http->response.headers->putstr(http->response.headers, name, value);
}
else
{
http->response.headers->remove(http->response.headers, name);
}
return 0;
}
/**
* Get response header.
*
* @param name name of header.
*
* @return value of string if found, otherwise NULL.
*/
const char *restd_http_get_response_header(restd_conn_t *conn, const char *name)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
return http->response.headers->getstr(http->response.headers, name, false);
}
/**
*
* @return 0 on success, -1 if we already sent it out.
*/
int restd_http_set_response_code(restd_conn_t *conn, int code, const char *reason)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.frozen_header)
{
return -1;
}
http->response.code = code;
if (reason)
http->response.reason = strdup(reason);
return 0;
}
/**
*
* @param size content size. -1 for chunked transfer encoding.
* @return 0 on success, -1 if we already sent it out.
*/
int restd_http_set_response_content(restd_conn_t *conn, const char *contenttype,
off_t size)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.frozen_header)
{
return -1;
}
// Set Content-Type header.
restd_http_set_response_header(
conn, "Content-Type",
(contenttype) ? contenttype : HTTP_DEF_CONTENTTYPE);
if (size >= 0)
{
char clenval[20 + 1];
sprintf(clenval, "%jd", size);
restd_http_set_response_header(conn, "Content-Length", clenval);
http->response.contentlength = size;
}
else
{
restd_http_set_response_header(conn, "Transfer-Encoding", "chunked");
http->response.contentlength = -1;
}
return 0;
}
/**
* @return total bytes sent, 0 on error.
*/
size_t restd_http_response(restd_conn_t *conn, int code, const char *contenttype,
const void *data, off_t size)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.frozen_header)
{
return 0;
}
// Set response headers.
if (restd_http_get_response_header(conn, "Connection") == NULL)
{
restd_http_set_response_header(
conn, "Connection",
(restd_http_is_keepalive_request(conn)) ? "Keep-Alive" : "close");
}
restd_http_set_response_code(conn, code, restd_http_get_reason(code));
restd_http_set_response_content(conn, contenttype, size);
return restd_http_send_data(conn, data, size);
}
/**
*
* @return 0 total bytes put in out buffer, -1 if we already sent it out.
*/
size_t restd_http_send_header(restd_conn_t *conn)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.frozen_header)
{
return 0;
}
http->response.frozen_header = true;
// Send status line.
const char *reason =
(http->response.reason) ? http->response.reason : restd_http_get_reason(http->response.code);
evbuffer_add_printf(http->response.outbuf, "%s %d %s" HTTP_CRLF,
http->request.httpver, http->response.code, reason);
// Send headers.
qlisttbl_obj_t obj;
bzero((void *)&obj, sizeof(obj));
qlisttbl_t *tbl = http->response.headers;
tbl->lock(tbl);
while (tbl->getnext(tbl, &obj, NULL, false))
{
evbuffer_add_printf(http->response.outbuf, "%s: %s" HTTP_CRLF,
(char *)obj.name, (char *)obj.data);
}
tbl->unlock(tbl);
// Send empty line, indicator of end of header.
evbuffer_add(http->response.outbuf, HTTP_CRLF, CONST_STRLEN(HTTP_CRLF));
return evbuffer_get_length(http->response.outbuf);
}
/**
*
* @return 0 on success, -1 if we already sent it out.
*/
size_t restd_http_send_data(restd_conn_t *conn, const void *data, size_t size)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.contentlength < 0)
{
WARN("Content-Length is not set. Invalid usage.");
return 0;
}
if ((http->response.bodyout + size) > http->response.contentlength)
{
WARN("Trying to send more data than supposed to");
return 0;
}
size_t beforesize = evbuffer_get_length(http->response.outbuf);
if (!http->response.frozen_header)
{
restd_http_send_header(conn);
}
if (data != NULL && size > 0)
{
if (evbuffer_add(http->response.outbuf, data, size))
return 0;
}
http->response.bodyout += size;
return (evbuffer_get_length(http->response.outbuf) - beforesize);
}
/*--------------------------------------------------------------------------*/
size_t restd_http_send_chunk(restd_conn_t *conn, const void *data, size_t size)
{
restd_http_t *http = (restd_http_t *)restd_conn_get_extra(conn);
if (http->response.contentlength >= 0)
{
WARN("Content-Length is set. Invalid usage.");
return 0;
}
if (!http->response.frozen_header)
{
restd_http_send_header(conn);
}
size_t beforesize = evbuffer_get_length(http->response.outbuf);
int status = 0;
if (size > 0)
{
status += evbuffer_add_printf(http->response.outbuf, "%zu" HTTP_CRLF,
size);
status += evbuffer_add(http->response.outbuf, data, size);
status += evbuffer_add(http->response.outbuf, HTTP_CRLF,
CONST_STRLEN(HTTP_CRLF));
}
else
{
status += evbuffer_add_printf(http->response.outbuf,
"0" HTTP_CRLF HTTP_CRLF);
}
if (status != 0)
{
WARN("Failed to add data to out-buffer. (size:%jd)", size);
return 0;
}
size_t bytesout = evbuffer_get_length(http->response.outbuf) - beforesize;
http->response.bodyout += bytesout;
return bytesout;
}
/*--------------------------------------------------------------------------*/
const char *restd_http_get_reason(int code)
{
switch (code)
{
case HTTP_CODE_CONTINUE:
return "Continue";
case HTTP_CODE_OK:
return "OK";
case HTTP_CODE_CREATED:
return "Created";
case HTTP_CODE_NO_CONTENT:
return "No content";
case HTTP_CODE_PARTIAL_CONTENT:
return "Partial Content";
case HTTP_CODE_MULTI_STATUS:
return "Multi Status";
case HTTP_CODE_MOVED_TEMPORARILY:
return "Moved Temporarily";
case HTTP_CODE_NOT_MODIFIED:
return "Not Modified";
case HTTP_CODE_Brestd_REQUEST:
return "Bad Request";
case HTTP_CODE_UNAUTHORIZED:
return "Authorization Required";
case HTTP_CODE_FORBIDDEN:
return "Forbidden";
case HTTP_CODE_NOT_FOUND:
return "Not Found";
case HTTP_CODE_METHOD_NOT_ALLOWED:
return "Method Not Allowed";
case HTTP_CODE_REQUEST_TIME_OUT:
return "Request Time Out";
case HTTP_CODE_GONE:
return "Gone";
case HTTP_CODE_REQUEST_URI_TOO_LONG:
return "Request URI Too Long";
case HTTP_CODE_LOCKED:
return "Locked";
case HTTP_CODE_INTERNAL_SERVER_ERROR:
return "Internal Server Error";
case HTTP_CODE_NOT_IMPLEMENTED:
return "Not Implemented";
case HTTP_CODE_SERVICE_UNAVAILABLE:
return "Service Unavailable";
}
WARN("Undefined code found. %d", code);
return "-";
}
/******************************************************************************
* Private internal functions.
*****************************************************************************/
#ifndef _DOXYGEN_SKIP
static restd_http_t *http_new(struct evbuffer *out)
{
// Create a new connection container.
restd_http_t *http = NEW_OBJECT(restd_http_t);
if (http == NULL)
return NULL;
// Allocate additional resources.
http->request.inbuf = evbuffer_new();
http->request.headers = qlisttbl(
QLISTTBL_UNIQUE | QLISTTBL_CASEINSENSITIVE);
http->response.headers = qlisttbl(
QLISTTBL_UNIQUE | QLISTTBL_CASEINSENSITIVE);
if (http->request.inbuf == NULL || http->request.headers == NULL || http->response.headers == NULL)
{
http_free(http);
return NULL;
}
// Initialize structure.
http->request.status = RESTD_HTTP_REQ_INIT;
http->request.contentlength = -1;
http->response.contentlength = -1;
http->response.outbuf = out;
return http;
}
/*--------------------------------------------------------------------------*/
static void http_free(restd_http_t *http)
{
if (http)
{
if (http->request.inbuf)
evbuffer_free(http->request.inbuf);
if (http->request.method)
free(http->request.method);
if (http->request.uri)
free(http->request.uri);
if (http->request.httpver)
free(http->request.httpver);
if (http->request.path)
free(http->request.path);
if (http->request.query)
free(http->request.query);
if (http->request.headers)
http->request.headers->free(http->request.headers);
if (http->request.host)
free(http->request.host);
if (http->request.domain)
free(http->request.domain);
if (http->response.headers)
http->response.headers->free(http->response.headers);
if (http->response.reason)
free(http->response.reason);
free(http);
}
}
/*--------------------------------------------------------------------------*/
static void http_free_cb(restd_conn_t *conn, void *userdata)
{
http_free((restd_http_t *)userdata);
}
/*--------------------------------------------------------------------------*/
static size_t http_add_inbuf(struct evbuffer *buffer, restd_http_t *http,
size_t maxsize)
{
if (maxsize == 0 || evbuffer_get_length(buffer) == 0)
{
return 0;
}
return evbuffer_remove_buffer(buffer, http->request.inbuf, maxsize);
}
/*--------------------------------------------------------------------------*/
static int http_parser(restd_http_t *http, struct evbuffer *in)
{
ASSERT(http != NULL && in != NULL);
if (http->request.status == RESTD_HTTP_REQ_INIT)
{
char *line = evbuffer_readln(in, NULL, EVBUFFER_EOL_CRLF);
if (line == NULL)
return http->request.status;
http->request.status = parse_requestline(http, line);
free(line);
// Do not call user callbacks until I reach the next state.
if (http->request.status == RESTD_HTTP_REQ_INIT)
{
return RESTD_TAKEOVER;
}
}
if (http->request.status == RESTD_HTTP_REQ_REQUESTLINE_DONE)
{
http->request.status = parse_headers(http, in);
// Do not call user callbacks until I reach the next state.
if (http->request.status == RESTD_HTTP_REQ_REQUESTLINE_DONE)
{
return RESTD_TAKEOVER;
}
}
if (http->request.status == RESTD_HTTP_REQ_HEADER_DONE)
{
http->request.status = parse_body(http, in);
// Do not call user callbacks until I reach the next state.
if (http->request.status == RESTD_HTTP_REQ_HEADER_DONE)
{
return RESTD_TAKEOVER;
}
}
if (http->request.status == RESTD_HTTP_REQ_DONE)
{
return RESTD_OK;
}
if (http->request.status == RESTD_HTTP_ERROR)
{
return RESTD_CLOSE;
}
BUG_EXIT();
return RESTD_CLOSE;
}
/*--------------------------------------------------------------------------*/
static int parse_requestline(restd_http_t *http, char *line)
{
// Parse request line.
char *saveptr;
char *method = strtok_r(line, " ", &saveptr);
char *uri = strtok_r(NULL, " ", &saveptr);
char *httpver = strtok_r(NULL, " ", &saveptr);
char *tmp = strtok_r(NULL, " ", &saveptr);
if (method == NULL || uri == NULL || httpver == NULL || tmp != NULL)
{
DEBUG("Invalid request line. %s", line);
return RESTD_HTTP_ERROR;
}
// Set request method
http->request.method = qstrupper(strdup(method));
// Set HTTP version
http->request.httpver = qstrupper(strdup(httpver));
if (strcmp(http->request.httpver, HTTP_PROTOCOL_09) && strcmp(http->request.httpver, HTTP_PROTOCOL_10) && strcmp(http->request.httpver, HTTP_PROTOCOL_11))
{
DEBUG("Unknown protocol: %s", http->request.httpver);
return RESTD_HTTP_ERROR;
}
// Set URI
if (uri[0] == '/')
{
http->request.uri = strdup(uri);
}
else if ((tmp = strstr(uri, "://")))
{
// divide URI into host and path
char *path = strstr(tmp + CONST_STRLEN("://"), "/");
if (path == NULL)
{ // URI has no path ex) http://domain.com:80
http->request.headers->putstr(http->request.headers, "Host",
tmp + CONST_STRLEN("://"));
http->request.uri = strdup("/");
}
else
{ // URI has path, ex) http://domain.com:80/path
*path = '\0';
http->request.headers->putstr(http->request.headers, "Host",
tmp + CONST_STRLEN("://"));
*path = '/';
http->request.uri = strdup(path);
}
}
else
{
DEBUG("Invalid URI format. %s", uri);
return RESTD_HTTP_ERROR;
}
// Set request path. Only path part from URI.
http->request.path = strdup(http->request.uri);
tmp = strstr(http->request.path, "?");
if (tmp)
{
*tmp = '\0';
http->request.query = strdup(tmp + 1);
}
else
{
http->request.query = strdup("");
}
qurl_decode(http->request.path);
// check path
if (isValidPathname(http->request.path) == false)
{
DEBUG("Invalid URI format : %s", http->request.uri);
return RESTD_HTTP_ERROR;
}
correctPathname(http->request.path);
DEBUG("Method=%s, URI=%s, VER=%s", http->request.method, http->request.uri, http->request.httpver);
return RESTD_HTTP_REQ_REQUESTLINE_DONE;
}
/*--------------------------------------------------------------------------*/
static int parse_headers(restd_http_t *http, struct evbuffer *in)
{
char *line;
while ((line = evbuffer_readln(in, NULL, EVBUFFER_EOL_CRLF)))
{
if (IS_EMPTY_STR(line))
{
const char *clen = http->request.headers->getstr(
http->request.headers, "Content-Length", false);
http->request.contentlength = (clen) ? atol(clen) : -1;
free(line);
return RESTD_HTTP_REQ_HEADER_DONE;
}
// Parse
char *name, *value;
char *tmp = strstr(line, ":");
if (tmp)
{
*tmp = '\0';
name = qstrtrim(line);
value = qstrtrim(tmp + 1);
}
else
{
name = qstrtrim(line);
value = "";
}
// Add
http->request.headers->putstr(http->request.headers, name, value);
free(line);
}
return http->request.status;
}
/*--------------------------------------------------------------------------*/
static int parse_body(restd_http_t *http, struct evbuffer *in)
{
// Handle static data case.
if (http->request.contentlength == 0)
{
return RESTD_HTTP_REQ_DONE;
}
else if (http->request.contentlength > 0)
{
if (http->request.contentlength > http->request.bodyin)
{
size_t maxread = http->request.contentlength - http->request.bodyin;
if (maxread > 0 && evbuffer_get_length(in) > 0)
{
http->request.bodyin += http_add_inbuf(in, http, maxread);
}
}
if (http->request.contentlength == http->request.bodyin)
{
return RESTD_HTTP_REQ_DONE;
}
}
else
{
// Check if Transfer-Encoding is chunked.
const char *tranenc = http->request.headers->getstr(
http->request.headers, "Transfer-Encoding", false);
if (tranenc != NULL && !strcmp(tranenc, "chunked"))
{
// TODO: handle chunked encoding
for (;;)
{
ssize_t chunksize = parse_chunked_body(http, in);
if (chunksize > 0)
{
continue;
}
else if (chunksize == 0)
{
return RESTD_HTTP_REQ_DONE;
}
else if (chunksize == -1)
{
return http->request.status;
}
else
{
return RESTD_HTTP_ERROR;
}
}
}
else
{
return RESTD_HTTP_REQ_DONE;
}
}
return http->request.status;
}
/**
* Parse chunked body and append it to inbuf.
*
* @return number of bytes in a chunk. so 0 for the ending chunk. -1 for not enough data, -2 format error.
*/
static ssize_t parse_chunked_body(restd_http_t *http, struct evbuffer *in)
{
// Peek chunk size.
size_t crlf_len = 0;
char *line = evbuffer_peekln(in, &crlf_len, EVBUFFER_EOL_CRLF);
if (line == NULL)
return -1; // not enough data.
size_t linelen = strlen(line);
// Parse chunk size
int chunksize = -1;
sscanf(line, "%x", &chunksize);
free(line);
if (chunksize < 0)
return -2; // format error
// Check if we've received whole data of this chunk.
size_t datalen = linelen + crlf_len + chunksize + crlf_len;
size_t inbuflen = evbuffer_get_length(in);
if (inbuflen < datalen)
{
return -1; // not enough data.
}
// Copy chunk body
evbuffer_drainln(in, NULL, EVBUFFER_EOL_CRLF);
http_add_inbuf(in, http, chunksize);
evbuffer_drainln(in, NULL, EVBUFFER_EOL_CRLF);
return chunksize;
}
/**
* validate file path
*/
static bool isValidPathname(const char *path)
{
if (path == NULL)
return false;
int len = strlen(path);
if (len == 0 || len >= PATH_MAX)
return false;
else if (path[0] != '/')
return false;
else if (strpbrk(path, "\\:*?\"<>|") != NULL)
return false;
// check folder name length
int n;
char *t;
for (n = 0, t = (char *)path; *t != '\0'; t++)
{
if (*t == '/')
{
n = 0;
continue;
}
if (n >= FILENAME_MAX)
{
DEBUG("Filename too long.");
return false;
}
n++;
}
return true;
}
/**
* Correct pathname.
*
* @note
* remove : heading & tailing white spaces, double slashes, tailing slash
*/
static void correctPathname(char *path)
{
// Take care of head & tail white spaces.
qstrtrim(path);
// Take care of double slashes.
while (strstr(path, "//") != NULL)
qstrreplace("sr", path, "//", "/");
// Take care of tailing slash.
int len = strlen(path);
if (len <= 1)
return;
if (path[len - 1] == '/')
path[len - 1] = '\0';
}
/*--------------------------------------------------------------------------*/
static char *evbuffer_peekln(struct evbuffer *buffer, size_t *n_rerestd_out,
enum evbuffer_eol_style eol_style)
{
// Check if first line has arrived.
struct evbuffer_ptr ptr = evbuffer_search_eol(buffer, NULL, n_rerestd_out,
eol_style);
if (ptr.pos == -1)
return NULL;
char *line = (char *)malloc(ptr.pos + 1);
if (line == NULL)
return NULL;
// Linearizes buffer
if (ptr.pos > 0)
{
char *bufferptr = (char *)evbuffer_pullup(buffer, ptr.pos);
ASSERT(bufferptr != NULL);
strncpy(line, bufferptr, ptr.pos);
}
line[ptr.pos] = '\0';
return line;
}
/*--------------------------------------------------------------------------*/
static ssize_t evbuffer_drainln(struct evbuffer *buffer, size_t *n_rerestd_out,
enum evbuffer_eol_style eol_style)
{
char *line = evbuffer_readln(buffer, n_rerestd_out, eol_style);
if (line == NULL)
return -1;
size_t linelen = strlen(line);
free(line);
return linelen;
}
#endif // _DOXYGEN_SKIP

799
lib/src/restd_server.c Normal file
View File

@@ -0,0 +1,799 @@
/*!
* restd_server.c
*
* Copyright (c) 2015-2019, NADAL Jean-Baptiste. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* @Author: NADAL Jean-Baptiste
* @Date: 23/12/2019
*
*/
// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
/*------------------------------- INCLUDES ----------------------------------*/
#include <stdbool.h>
#include <arpa/inet.h>
#include <sys/un.h>
#include <event2/buffer.h>
#include <event2/bufferevent.h>
#include <event2/event.h>
#include <event2/listener.h>
#ifdef __linux__
#include <sys/eventfd.h>
#else
#include <sys/event.h>
#endif
#include "macro.h"
#include "restd_server.h"
/*
* Local variables.
*/
static bool initialized = false;
/*
* Global variables.
*/
int _restd_log_level = RESTD_LOG_WARN;
/*
* User callback hook container.
*/
typedef struct restd_hook_s restd_hook_t;
struct restd_hook_s
{
char *method;
restd_callback cb;
void *userdata;
};
/*
* Local functions.
*/
static int notify_loopexit(restd_server_t *server);
static void notify_cb(struct bufferevent *buffer, void *userdata);
static void *server_loop(void *instance);
static void close_server(restd_server_t *server);
static void libevent_log_cb(int severity, const char *msg);
static int set_undefined_options(restd_server_t *server);
static void listener_cb(struct evconnlistener *listener,
evutil_socket_t evsocket, struct sockaddr *sockaddr,
int socklen, void *userdata);
static restd_conn_t *conn_new(restd_server_t *server, struct bufferevent *buffer);
static void conn_reset(restd_conn_t *conn);
static void conn_free(restd_conn_t *conn);
static void conn_read_cb(struct bufferevent *buffer, void *userdata);
static void conn_write_cb(struct bufferevent *buffer, void *userdata);
static void conn_event_cb(struct bufferevent *buffer, short what, void *userdata);
static void conn_cb(restd_conn_t *conn, int event);
static int call_hooks(short event, restd_conn_t *conn);
static void *set_userdata(restd_conn_t *conn, int index, const void *userdata, restd_userdata_free_cb free_cb);
static void *get_userdata(restd_conn_t *conn, int index);
/**
* Server option names and default values.
*/
#define RESTD_SERVER_OPTIONS { \
{"server.port", "8888"}, \
\
/* Addr format IPv4="1.2.3.4", IPv6="1:2:3:4:5:6", Unix="/path" */ \
{"server.addr", "0.0.0.0"}, \
\
{"server.backlog", "128"}, \
\
/* Set read timeout seconds. 0 means no timeout. */ \
{"server.timeout", "0"}, \
\
/* Enable or disable request pipelining, this change AD_DONE's behavior */ \
{"server.request_pipelining", "1"}, \
\
/* Run server in a separate thread */ \
{"server.thread", "0"}, \
\
/* Collect resources after stop */ \
{"server.free_on_stop", "1"}, \
\
/* End of array marker. Do not remove */ \
{"", "_END_"}};
/*------------------------------- FUNCTIONS ----------------------------------*/
/**
* Set debug output level.
*
* @param debug_level debug output level. 0 to disable.
*
* @return previous debug level.
*
* @note
* debug_level:
* REST_LOG_DISABLE
* REST_LOG_ERROR
* REST_LOG_WARN (default)
* REST_LOG_INFO
* REST_LOG_DEBUG
* REST_LOG_DEBUG2
*/
enum restd_log_e restd_log_level(enum restd_log_e log_level)
{
int prev = _restd_log_level;
_restd_log_level = log_level;
return prev;
}
/**
* Create a server object.
*/
restd_server_t *restd_server_new(void)
{
if (initialized)
{
initialized = true;
}
restd_server_t *server = NEW_OBJECT(restd_server_t);
if (server == NULL)
{
return NULL;
}
// Initialize instance.
server->options = qhashtbl(0, 0);
server->stats = qhashtbl(100, QHASHTBL_THREADSAFE);
server->hooks = qlist(0);
if (server->options == NULL || server->stats == NULL || server->hooks == NULL)
{
restd_server_free(server);
return NULL;
}
DEBUG("Created a server object.");
return server;
}
/**
* Release server object and all the resources.
*/
void restd_server_free(restd_server_t *server)
{
if (server == NULL)
return;
int thread = restd_server_get_option_int(server, "server.thread");
if (thread && server->thread)
{
notify_loopexit(server);
sleep(1);
close_server(server);
}
if (server->evbase)
{
event_base_free(server->evbase);
}
if (server->options)
{
server->options->free(server->options);
}
if (server->stats)
{
server->stats->free(server->stats);
}
if (server->hooks)
{
qlist_t *tbl = server->hooks;
restd_hook_t *hook;
while ((hook = tbl->popfirst(tbl, NULL)))
{
if (hook->method)
free(hook->method);
free(hook);
}
server->hooks->free(server->hooks);
}
free(server);
DEBUG("Server terminated.");
}
/**
* Start server.
*
* @return 0 if successful, otherwise -1.
*/
int restd_server_start(restd_server_t *server)
{
DEBUG("Starting a server.");
// Set default options that were not set by user..
set_undefined_options(server);
// Hookup libevent's log message.
if (_restd_log_level >= RESTD_LOG_DEBUG)
{
event_set_log_callback(libevent_log_cb);
if (_restd_log_level >= RESTD_LOG_DEBUG2)
{
event_enable_debug_mode();
}
}
// Parse addr
int port = restd_server_get_option_int(server, "server.port");
char *addr = restd_server_get_option(server, "server.addr");
struct sockaddr *sockaddr = NULL;
size_t sockaddr_len = 0;
if (addr[0] == '/')
{ // Unix socket.
struct sockaddr_un unixaddr;
bzero((void *)&unixaddr, sizeof(struct sockaddr_un));
if (strlen(addr) >= sizeof(unixaddr.sun_path))
{
errno = EINVAL;
DEBUG("Too long unix socket name. '%s'", addr);
return -1;
}
unixaddr.sun_family = AF_UNIX;
strcpy(unixaddr.sun_path, addr); // no need of strncpy()
sockaddr = (struct sockaddr *)&unixaddr;
sockaddr_len = sizeof(unixaddr);
}
else if (strstr(addr, ":"))
{ // IPv6
struct sockaddr_in6 ipv6addr;
bzero((void *)&ipv6addr, sizeof(struct sockaddr_in6));
ipv6addr.sin6_family = AF_INET6;
ipv6addr.sin6_port = htons(port);
evutil_inet_pton(AF_INET6, addr, &ipv6addr.sin6_addr);
sockaddr = (struct sockaddr *)&ipv6addr;
sockaddr_len = sizeof(ipv6addr);
}
else
{ // IPv4
struct sockaddr_in ipv4addr;
bzero((void *)&ipv4addr, sizeof(struct sockaddr_in));
ipv4addr.sin_family = AF_INET;
ipv4addr.sin_port = htons(port);
ipv4addr.sin_addr.s_addr =
(IS_EMPTY_STR(addr)) ? INADDR_ANY : inet_addr(addr);
sockaddr = (struct sockaddr *)&ipv4addr;
sockaddr_len = sizeof(ipv4addr);
}
// Bind
if (!server->evbase)
{
server->evbase = event_base_new();
if (!server->evbase)
{
ERROR("Failed to create a new event base.");
return -1;
}
}
// Create a eventfd for notification channel.
#ifdef __linux__
int notifyfd = eventfd(0, 0);
#else
int notifyfd = kqueue();
#endif
server->notify_buffer = bufferevent_socket_new(server->evbase, notifyfd, BEV_OPT_CLOSE_ON_FREE);
bufferevent_setcb(server->notify_buffer, NULL, notify_cb, NULL, server);
if (!server->listener)
{
server->listener = evconnlistener_new_bind(
server->evbase, listener_cb, (void *)server,
LEV_OPT_THREADSAFE | LEV_OPT_REUSEABLE | LEV_OPT_CLOSE_ON_FREE,
restd_server_get_option_int(server, "server.backlog"),
sockaddr, sockaddr_len);
if (!server->listener)
{
ERROR("Failed to bind on %s:%d", addr, port);
return -1;
}
}
// Listen
INFO("Listening on %s:%d", addr, port);
int exitstatus = 0;
if (restd_server_get_option_int(server, "server.thread"))
{
DEBUG("Launching server as a thread.")
server->thread = NEW_OBJECT(pthread_t);
pthread_create(server->thread, NULL, &server_loop, (void *)server);
//pthread_detach(server->thread);
}
else
{
int *retval = server_loop(server);
exitstatus = *retval;
free(retval);
close_server(server);
if (restd_server_get_option_int(server, "server.free_on_stop"))
{
restd_server_free(server);
}
}
return exitstatus;
}
/**
* Set server option.
*
* @see AD_SERVER_OPTIONS
*/
void restd_server_set_option(restd_server_t *server, const char *key, const char *value)
{
server->options->putstr(server->options, key, value);
}
/**
* Retrieve server option.
*/
char *restd_server_get_option(restd_server_t *server, const char *key)
{
return server->options->getstr(server->options, key, false);
}
/**
* Retrieve server option in integer format.
*/
int restd_server_get_option_int(restd_server_t *server, const char *key)
{
char *value = restd_server_get_option(server, key);
return (value) ? atoi(value) : 0;
}
/**
* If there's no event, loopbreak or loopexit call won't work until one more
* event arrived. So we use eventfd as a internal notification channel to let
* server get out of the loop without waiting for an event.
*/
static int notify_loopexit(restd_server_t *server)
{
uint64_t x = 0;
return bufferevent_write(server->notify_buffer, &x, sizeof(uint64_t));
}
/*--------------------------------------------------------------------------*/
static void notify_cb(struct bufferevent *buffer, void *userdata)
{
restd_server_t *server = (restd_server_t *)userdata;
event_base_loopexit(server->evbase, NULL);
DEBUG("Existing loop.");
}
/*--------------------------------------------------------------------------*/
static void *server_loop(void *instance)
{
restd_server_t *server = (restd_server_t *)instance;
int *retval = NEW_OBJECT(int);
DEBUG("Loop start");
event_base_loop(server->evbase, 0);
DEBUG("Loop finished");
*retval = (event_base_got_break(server->evbase)) ? -1 : 0;
return retval;
}
/*--------------------------------------------------------------------------*/
static void close_server(restd_server_t *server)
{
DEBUG("Closing server.");
if (server->notify_buffer)
{
bufferevent_free(server->notify_buffer);
server->notify_buffer = NULL;
}
if (server->listener)
{
evconnlistener_free(server->listener);
server->listener = NULL;
}
if (server->thread)
{
void *retval = NULL;
DEBUG("Waiting server's last loop to finish.");
pthread_join(*(server->thread), &retval);
free(retval);
free(server->thread);
server->thread = NULL;
}
INFO("Server closed.");
}
/*--------------------------------------------------------------------------*/
static void libevent_log_cb(int severity, const char *msg)
{
switch (severity)
{
case _EVENT_LOG_MSG:
{
INFO("%s", msg);
break;
}
case _EVENT_LOG_WARN:
{
WARN("%s", msg);
break;
}
case _EVENT_LOG_ERR:
{
ERROR("%s", msg);
break;
}
default:
{
DEBUG("%s", msg);
break;
}
}
}
/*--------------------------------------------------------------------------*/
// Set default options that were not set by user..
static int set_undefined_options(restd_server_t *server)
{
int newentries = 0;
char *default_options[][2] = RESTD_SERVER_OPTIONS;
for (int i = 0; !IS_EMPTY_STR(default_options[i][0]); i++)
{
if (!restd_server_get_option(server, default_options[i][0]))
{
restd_server_set_option(server, default_options[i][0], default_options[i][1]);
newentries++;
}
DEBUG("%s=%s", default_options[i][0], restd_server_get_option(server, default_options[i][0]));
}
return newentries;
}
/*--------------------------------------------------------------------------*/
static void listener_cb(struct evconnlistener *listener, evutil_socket_t socket,
struct sockaddr *sockaddr, int socklen, void *userdata)
{
DEBUG("New connection.");
restd_server_t *server = (restd_server_t *)userdata;
// Create a new buffer.
struct bufferevent *buffer = NULL;
buffer = bufferevent_socket_new(server->evbase, socket, BEV_OPT_CLOSE_ON_FREE);
if (buffer == NULL)
goto error;
// Set read timeout.
int timeout = restd_server_get_option_int(server, "server.timeout");
if (timeout > 0)
{
struct timeval tm;
bzero((void *)&tm, sizeof(struct timeval));
tm.tv_sec = timeout;
bufferevent_set_timeouts(buffer, &tm, NULL);
}
// Create a connection.
void *conn = conn_new(server, buffer);
if (!conn)
goto error;
return;
error:
if (buffer)
bufferevent_free(buffer);
ERROR("Failed to create a connection handler.");
event_base_loopbreak(server->evbase);
server->errcode = ENOMEM;
}
/*--------------------------------------------------------------------------*/
static restd_conn_t *conn_new(restd_server_t *server, struct bufferevent *buffer)
{
if (server == NULL || buffer == NULL)
{
return NULL;
}
// Create a new connection container.
restd_conn_t *conn = NEW_OBJECT(restd_conn_t);
if (conn == NULL)
return NULL;
// Initialize with default values.
conn->server = server;
conn->buffer = buffer;
conn->in = bufferevent_get_input(buffer);
conn->out = bufferevent_get_output(buffer);
conn_reset(conn);
// Bind callback
bufferevent_setcb(buffer, conn_read_cb, conn_write_cb, conn_event_cb, (void *)conn);
bufferevent_setwatermark(buffer, EV_WRITE, 0, 0);
bufferevent_enable(buffer, EV_WRITE);
bufferevent_enable(buffer, EV_READ);
// Run callbacks with AD_EVENT_INIT event.
conn->status = call_hooks(RESTD_EVENT_INIT | RESTD_EVENT_WRITE, conn);
return conn;
}
/*--------------------------------------------------------------------------*/
static void conn_reset(restd_conn_t *conn)
{
conn->status = RESTD_OK;
for (int i = 0; i < RESTD_NUM_USERDATA; i++)
{
if (conn->userdata[i])
{
if (conn->userdata_free_cb[i] != NULL)
{
conn->userdata_free_cb[i](conn, conn->userdata[i]);
}
else
{
WARN("Found unreleased userdata.");
}
conn->userdata[i] = NULL;
}
}
if (conn->method)
{
free(conn->method);
conn->method = NULL;
}
}
/*--------------------------------------------------------------------------*/
static void conn_free(restd_conn_t *conn)
{
if (conn)
{
if (conn->status != RESTD_CLOSE)
{
call_hooks(RESTD_EVENT_CLOSE | RESTD_EVENT_SHUTDOWN, conn);
}
conn_reset(conn);
if (conn->buffer)
{
bufferevent_free(conn->buffer);
}
free(conn);
}
}
/*--------------------------------------------------------------------------*/
#define DRAIN_EVBUFFER(b) evbuffer_drain(b, evbuffer_get_length(b))
static void conn_read_cb(struct bufferevent *buffer, void *userdata)
{
DEBUG("read_cb");
restd_conn_t *conn = userdata;
conn_cb(conn, RESTD_EVENT_READ);
}
/*--------------------------------------------------------------------------*/
static void conn_write_cb(struct bufferevent *buffer, void *userdata)
{
DEBUG("write_cb");
restd_conn_t *conn = userdata;
conn_cb(conn, RESTD_EVENT_WRITE);
}
/*--------------------------------------------------------------------------*/
static void conn_event_cb(struct bufferevent *buffer, short what, void *userdata)
{
DEBUG("event_cb 0x%x", what);
restd_conn_t *conn = userdata;
if (what & BEV_EVENT_EOF || what & BEV_EVENT_ERROR || what & BEV_EVENT_TIMEOUT)
{
conn->status = RESTD_CLOSE;
conn_cb(conn, RESTD_EVENT_CLOSE | ((what & BEV_EVENT_TIMEOUT) ? RESTD_EVENT_TIMEOUT : 0));
}
}
/*--------------------------------------------------------------------------*/
static void conn_cb(restd_conn_t *conn, int event)
{
DEBUG("conn_cb: status:0x%x, event:0x%x", conn->status, event)
if (conn->status == RESTD_OK || conn->status == RESTD_TAKEOVER)
{
int status = call_hooks(event, conn);
// Update status only when it's higher then before.
if (!(conn->status == RESTD_CLOSE || (conn->status == RESTD_DONE && conn->status >= status)))
{
conn->status = status;
}
}
if (conn->status == RESTD_DONE)
{
if (restd_server_get_option_int(conn->server, "server.request_pipelining"))
{
call_hooks(RESTD_EVENT_CLOSE, conn);
conn_reset(conn);
call_hooks(RESTD_EVENT_INIT, conn);
}
else
{
// Do nothing but drain input buffer.
if (event == RESTD_EVENT_READ)
{
DEBUG("Draining in-buffer. %d", conn->status);
DRAIN_EVBUFFER(conn->in);
}
}
return;
}
else if (conn->status == RESTD_CLOSE)
{
if (evbuffer_get_length(conn->out) <= 0)
{
int newevent = (event & RESTD_EVENT_CLOSE) ? event : RESTD_EVENT_CLOSE;
call_hooks(newevent, conn);
conn_free(conn);
DEBUG("Connection closed.");
return;
}
}
}
/*--------------------------------------------------------------------------*/
/**
* Register user hook.
*/
void restd_server_register_hook(restd_server_t *server, restd_callback cb, void *userdata)
{
restd_server_register_hook_on_method(server, NULL, cb, userdata);
}
/*--------------------------------------------------------------------------*/
/**
* Register user hook on method name.
*/
void restd_server_register_hook_on_method(restd_server_t *server, const char *method, restd_callback cb, void *userdata)
{
restd_hook_t hook;
bzero((void *)&hook, sizeof(restd_hook_t));
hook.method = (method) ? strdup(method) : NULL;
hook.cb = cb;
hook.userdata = userdata;
server->hooks->addlast(server->hooks, (void *)&hook, sizeof(restd_hook_t));
}
/*--------------------------------------------------------------------------*/
static int call_hooks(short event, restd_conn_t *conn)
{
DEBUG("call_hooks: event 0x%x", event);
qlist_t *hooks = conn->server->hooks;
qlist_obj_t obj;
bzero((void *)&obj, sizeof(qlist_obj_t));
while (hooks->getnext(hooks, &obj, false) == true)
{
restd_hook_t *hook = (restd_hook_t *)obj.data;
if (hook->cb)
{
if (hook->method && conn->method && strcmp(hook->method, conn->method))
{
continue;
}
int status = hook->cb(event, conn, hook->userdata);
if (status != RESTD_OK)
{
return status;
}
}
}
return RESTD_OK;
}
/*--------------------------------------------------------------------------*/
static void *set_userdata(restd_conn_t *conn, int index, const void *userdata, restd_userdata_free_cb free_cb)
{
void *prev = conn->userdata;
conn->userdata[index] = (void *)userdata;
conn->userdata_free_cb[index] = free_cb;
return prev;
}
/*--------------------------------------------------------------------------*/
static void *get_userdata(restd_conn_t *conn, int index)
{
return conn->userdata[index];
}
/*--------------------------------------------------------------------------*/
/**
* Set extra userdata into the connection.
*
* @return previous userdata;
*
* @note
* Extra userdata is for default protocol handler such as ad_http_handler to
* provide higher abstraction. End users should always use only ad_conn_set_userdata()
* to avoid any conflict with default handlers.
*/
void *restd_conn_set_extra(restd_conn_t *conn, const void *extra, restd_userdata_free_cb free_cb)
{
return set_userdata(conn, 1, extra, free_cb);
}
/**
* Get extra userdata attached in this connection.
*/
void *restd_conn_get_extra(restd_conn_t *conn)
{
return get_userdata(conn, 1);
}
/**
* Set method name on this connection.
*
* Once the method name is set, hooks registered by ad_server_register_hook_on_method()
* will be called if method name matches with the registered name.
*
* @see ad_server_register_hook_on_method()
*/
void restd_conn_set_method(restd_conn_t *conn, char *method)
{
char *prev = conn->method;
conn->method = (method != NULL) ? strdup(method) : NULL;
if (prev)
{
free(prev);
}
}

4
src/CMakeLists.txt
View File

@@ -7,7 +7,7 @@ set (CMAKE_MODULE_PATH "${MODULE_PATH}")
link_directories(${CMAKE_SOURCE_DIR}/build/lib) link_directories(${CMAKE_SOURCE_DIR}/build/lib)
include_directories (${CMAKE_SOURCE_DIR}/libasyncd/include) include_directories (${CMAKE_SOURCE_DIR}/domo-iot/lib/include)
include_directories (${CMAKE_SOURCE_DIR}/libevent/include) include_directories (${CMAKE_SOURCE_DIR}/libevent/include)
include_directories (${CMAKE_SOURCE_DIR}/build/libevent/include) include_directories (${CMAKE_SOURCE_DIR}/build/libevent/include)
include_directories (${CMAKE_SOURCE_DIR}/qlibc/include) include_directories (${CMAKE_SOURCE_DIR}/qlibc/include)
@@ -26,7 +26,7 @@ add_executable (domo-iot ${source_files})
target_link_libraries (domo-iot target_link_libraries (domo-iot
LINK_PUBLIC LINK_PUBLIC
nats_static nats_static
asyncd-static restd-static
qlibc-static qlibc-static
qlibcext-static qlibcext-static
event event

44
src/main.c
View File

@@ -28,45 +28,41 @@
/*-------------------------------- INCLUDES ---------------------------------*/ /*-------------------------------- INCLUDES ---------------------------------*/
#include <asyncd/asyncd.h> #include <restd.h>
int my_http_get_handler(short event, ad_conn_t *conn, void *userdata) int my_http_get_handler(short event, restd_conn_t *conn, void *userdata)
{ {
if (event & AD_EVENT_READ) if (event & RESTD_EVENT_READ)
{ {
if (ad_http_get_status(conn) == AD_HTTP_REQ_DONE) if (restd_http_get_status(conn) == RESTD_HTTP_REQ_DONE)
{ {
ad_http_response(conn, 200, "text/html", "Hello World", 11); restd_http_response(conn, 200, "text/html", "Hello World", 11);
return ad_http_is_keepalive_request(conn) ? AD_DONE : AD_CLOSE; return restd_http_is_keepalive_request(conn) ? RESTD_DONE : RESTD_CLOSE;
} }
} }
return AD_OK; return RESTD_OK;
} }
int my_http_default_handler(short event, ad_conn_t *conn, void *userdata) int my_http_default_handler(short event, restd_conn_t *conn, void *userdata)
{ {
if (event & AD_EVENT_READ) if (event & RESTD_EVENT_READ)
{ {
if (ad_http_get_status(conn) == AD_HTTP_REQ_DONE) if (restd_http_get_status(conn) == RESTD_HTTP_REQ_DONE)
{ {
ad_http_response(conn, 501, "text/html", "Not implemented", 15); restd_http_response(conn, 501, "text/html", "Not implemented", 15);
return AD_CLOSE; // Close connection. return RESTD_CLOSE; // Close connection.
} }
} }
return AD_OK; return RESTD_OK;
} }
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
//SSL_load_error_strings(); restd_log_level(RESTD_LOG_DEBUG);
//SSL_library_init(); restd_server_t *server = restd_server_new();
ad_log_level(AD_LOG_DEBUG); restd_server_set_option(server, "server.port", "8888");
ad_server_t *server = ad_server_new(); restd_server_register_hook(server, restd_http_handler, NULL); // HTTP Parser is also a hook.
ad_server_set_option(server, "server.port", "8888"); restd_server_register_hook_on_method(server, "GET", my_http_get_handler, NULL);
//ad_server_set_ssl_ctx(server, restd_server_register_hook(server, my_http_default_handler, NULL);
// ad_server_ssl_ctx_create_simple("ssl.cert", "ssl.pkey")); return restd_server_start(server);
ad_server_register_hook(server, ad_http_handler, NULL); // HTTP Parser is also a hook.
ad_server_register_hook_on_method(server, "GET", my_http_get_handler, NULL);
ad_server_register_hook(server, my_http_default_handler, NULL);
return ad_server_start(server);
} }