1 /*****************************************************************************
2 * net.c: Network related functions
3 *****************************************************************************
4 * Copyright (C) 2007-2008 the VideoLAN team
7 * Authors: Antoine Cellerier <dionoea at videolan tod org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
35 #include <vlc_common.h>
36 #include <vlc_network.h>
39 #include <lua.h> /* Low level lua C API */
40 #include <lauxlib.h> /* Higher level C API */
43 #include <poll.h> /* poll structures and defines */
50 /*****************************************************************************
52 *****************************************************************************/
53 static int vlclua_url_parse( lua_State *L )
55 const char *psz_url = luaL_checkstring( L, 1 );
56 const char *psz_option = luaL_optstring( L, 2, NULL );
59 vlc_UrlParse( &url, psz_url, psz_option?*psz_option:0 );
62 lua_pushstring( L, url.psz_protocol );
63 lua_setfield( L, -2, "protocol" );
64 lua_pushstring( L, url.psz_username );
65 lua_setfield( L, -2, "username" );
66 lua_pushstring( L, url.psz_password );
67 lua_setfield( L, -2, "password" );
68 lua_pushstring( L, url.psz_host );
69 lua_setfield( L, -2, "host" );
70 lua_pushinteger( L, url.i_port );
71 lua_setfield( L, -2, "port" );
72 lua_pushstring( L, url.psz_path );
73 lua_setfield( L, -2, "path" );
74 lua_pushstring( L, url.psz_option );
75 lua_setfield( L, -2, "option" );
82 /*****************************************************************************
84 *****************************************************************************/
85 static int vlclua_net_listen_close( lua_State * );
86 static int vlclua_net_accept( lua_State * );
87 static int vlclua_net_fds( lua_State * );
89 static const luaL_Reg vlclua_net_listen_reg[] = {
90 { "accept", vlclua_net_accept },
91 { "fds", vlclua_net_fds },
95 static int vlclua_net_listen_tcp( lua_State *L )
97 vlc_object_t *p_this = vlclua_get_this( L );
98 const char *psz_host = luaL_checkstring( L, 1 );
99 int i_port = luaL_checkint( L, 2 );
100 int *pi_fd = net_ListenTCP( p_this, psz_host, i_port );
102 return luaL_error( L, "Cannot listen on %s:%d", psz_host, i_port );
104 int **ppi_fd = lua_newuserdata( L, sizeof( int * ) );
107 if( luaL_newmetatable( L, "net_listen" ) )
110 luaL_register( L, NULL, vlclua_net_listen_reg );
111 lua_setfield( L, -2, "__index" );
112 lua_pushcfunction( L, vlclua_net_listen_close );
113 lua_setfield( L, -2, "__gc" );
116 lua_setmetatable( L, -2 );
120 static int vlclua_net_listen_close( lua_State *L )
122 int **ppi_fd = (int**)luaL_checkudata( L, 1, "net_listen" );
123 net_ListenClose( *ppi_fd );
127 static int vlclua_net_fds( lua_State *L )
129 int **ppi_fd = (int**)luaL_checkudata( L, 1, "net_listen" );
130 int *pi_fd = *ppi_fd;
133 while( pi_fd[i_count] != -1 )
134 lua_pushinteger( L, pi_fd[i_count++] );
139 static int vlclua_net_accept( lua_State *L )
141 vlc_object_t *p_this = vlclua_get_this( L );
142 int **ppi_fd = (int**)luaL_checkudata( L, 1, "net_listen" );
143 int i_fd = net_Accept( p_this, *ppi_fd );
145 lua_pushinteger( L, i_fd );
149 /*****************************************************************************
151 *****************************************************************************/
152 static int vlclua_net_close( lua_State *L )
154 int i_fd = luaL_checkint( L, 1 );
159 static int vlclua_net_send( lua_State *L )
161 int i_fd = luaL_checkint( L, 1 );
163 const char *psz_buffer = luaL_checklstring( L, 2, &i_len );
164 i_len = luaL_optint( L, 3, i_len );
165 i_len = send( i_fd, psz_buffer, i_len, 0 );
166 lua_pushinteger( L, i_len );
170 static int vlclua_net_recv( lua_State *L )
172 int i_fd = luaL_checkint( L, 1 );
173 size_t i_len = luaL_optint( L, 2, 1 );
174 char psz_buffer[i_len];
175 i_len = recv( i_fd, psz_buffer, i_len, 0 );
176 lua_pushlstring( L, psz_buffer, i_len );
180 /*****************************************************************************
182 *****************************************************************************/
183 /* Takes a { fd : events } table as first arg and modifies it to { fd : revents } */
184 static int vlclua_net_poll( lua_State *L )
186 luaL_checktype( L, 1, LUA_TTABLE );
187 double f_timeout = luaL_optnumber( L, 2, -1. );
191 while( lua_next( L, 1 ) )
196 struct pollfd *p_fds = malloc( i_fds * sizeof( struct pollfd ) );
197 vlc_cleanup_push( free, p_fds );
200 while( lua_next( L, 1 ) )
202 p_fds[i].fd = luaL_checkinteger( L, -2 );
203 p_fds[i].events = luaL_checkinteger( L, -1 );
204 p_fds[i].revents = 0;
209 int i_ret = poll( p_fds, i_fds, f_timeout < 0. ? -1 : (int)(f_timeout*1000) );
210 for( i = 0; i < i_fds; i++ )
212 lua_pushinteger( L, p_fds[i].fd );
213 lua_pushinteger( L, p_fds[i].revents );
214 lua_settable( L, 1 );
216 lua_pushinteger( L, i_ret );
221 /*****************************************************************************
223 *****************************************************************************/
225 static int vlclua_fd_open( lua_State *L )
230 static int vlclua_fd_write( lua_State *L )
232 int i_fd = luaL_checkint( L, 1 );
235 const char *psz_buffer = luaL_checklstring( L, 2, &i_len );
236 i_len = luaL_optint( L, 3, i_len );
237 i_ret = write( i_fd, psz_buffer, i_len );
238 lua_pushinteger( L, i_ret );
242 static int vlclua_fd_read( lua_State *L )
244 int i_fd = luaL_checkint( L, 1 );
245 size_t i_len = luaL_optint( L, 2, 1 );
246 char psz_buffer[i_len];
247 i_len = read( i_fd, psz_buffer, i_len );
248 lua_pushlstring( L, psz_buffer, i_len );
252 /*****************************************************************************
254 *****************************************************************************/
255 static int vlclua_stat( lua_State *L )
257 #ifdef HAVE_SYS_STAT_H
258 const char *psz_path = luaL_checkstring( L, 1 );
260 if( utf8_stat( psz_path, &s ) )
262 //return luaL_error( L, "Couldn't stat %s.", psz_path );
264 if( S_ISREG( s.st_mode ) )
265 lua_pushstring( L, "file" );
266 else if( S_ISDIR( s.st_mode ) )
267 lua_pushstring( L, "dir" );
269 else if( S_ISCHR( s.st_mode ) )
270 lua_pushstring( L, "character device" );
273 else if( S_ISBLK( s.st_mode ) )
274 lua_pushstring( L, "block device" );
277 else if( S_ISFIFO( s.st_mode ) )
278 lua_pushstring( L, "fifo" );
281 else if( S_ISLNK( s.st_mode ) )
282 lua_pushstring( L, "symbolic link" );
285 else if( S_ISSOCK( s.st_mode ) )
286 lua_pushstring( L, "socket" );
289 lua_pushstring( L, "unknown" );
290 lua_setfield( L, -2, "type" );
291 lua_pushinteger( L, s.st_mode );
292 lua_setfield( L, -2, "mode" );
293 lua_pushinteger( L, s.st_uid );
294 lua_setfield( L, -2, "uid" );
295 lua_pushinteger( L, s.st_gid );
296 lua_setfield( L, -2, "gid" );
297 lua_pushinteger( L, s.st_size );
298 lua_setfield( L, -2, "size" );
299 lua_pushinteger( L, s.st_atime );
300 lua_setfield( L, -2, "access_time" );
301 lua_pushinteger( L, s.st_mtime );
302 lua_setfield( L, -2, "modification_time" );
303 lua_pushinteger( L, s.st_ctime );
304 lua_setfield( L, -2, "creation_time" );
307 # warning "Woops, looks like we don't have stat on your platform"
308 return luaL_error( L, "System is missing <sys/stat.h>" );
312 static int vlclua_opendir( lua_State *L )
314 const char *psz_dir = luaL_checkstring( L, 1 );
318 if( ( p_dir = utf8_opendir( psz_dir ) ) == NULL )
319 return luaL_error( L, "cannot open directory `%s'.", psz_dir );
324 char *psz_filename = utf8_readdir( p_dir );
325 if( !psz_filename ) break;
327 lua_pushstring( L, psz_filename );
328 lua_rawseti( L, -2, i );
329 free( psz_filename );
335 /*****************************************************************************
337 *****************************************************************************/
338 static const luaL_Reg vlclua_net_reg[] = {
339 { "url_parse", vlclua_url_parse },
340 { "listen_tcp", vlclua_net_listen_tcp },
341 { "close", vlclua_net_close },
342 { "send", vlclua_net_send },
343 { "recv", vlclua_net_recv },
344 { "poll", vlclua_net_poll },
345 { "read", vlclua_fd_read },
346 { "write", vlclua_fd_write },
347 { "stat", vlclua_stat }, /* Not really "net" */
348 { "opendir", vlclua_opendir }, /* Not really "net" */
352 void luaopen_net( lua_State *L )
355 luaL_register( L, NULL, vlclua_net_reg );
356 #define ADD_CONSTANT( name, value ) \
357 lua_pushinteger( L, value ); \
358 lua_setfield( L, -2, name );
359 ADD_CONSTANT( "POLLIN", POLLIN )
360 ADD_CONSTANT( "POLLPRI", POLLPRI )
361 ADD_CONSTANT( "POLLOUT", POLLOUT )
362 ADD_CONSTANT( "POLLERR", POLLERR )
363 ADD_CONSTANT( "POLLHUP", POLLHUP )
364 ADD_CONSTANT( "POLLNVAL", POLLNVAL )
365 lua_setfield( L, -2, "net" );