/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h> /* malloc(), free() */
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
#include <vlc_interface.h>
#include <vlc_input.h>
+#include <stdbool.h>
#include <sys/stat.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
+#ifdef HAVE_POLL
+# include <poll.h>
+#endif
#include <vlc_network.h>
#include <vlc_url.h>
"to protect this interface. The default value is \"admin\"." )
#define TELNETPWD_DEFAULT "admin"
-vlc_module_begin();
- set_shortname( "Telnet" );
- set_category( CAT_INTERFACE );
- set_subcategory( SUBCAT_INTERFACE_CONTROL );
+vlc_module_begin ()
+ set_shortname( "Telnet" )
+ set_category( CAT_INTERFACE )
+ set_subcategory( SUBCAT_INTERFACE_CONTROL )
add_string( "telnet-host", "", NULL, TELNETHOST_TEXT,
- TELNETHOST_LONGTEXT, VLC_TRUE );
+ TELNETHOST_LONGTEXT, true )
add_integer( "telnet-port", TELNETPORT_DEFAULT, NULL, TELNETPORT_TEXT,
- TELNETPORT_LONGTEXT, VLC_TRUE );
- add_string( "telnet-password", TELNETPWD_DEFAULT, NULL, TELNETPWD_TEXT,
- TELNETPWD_LONGTEXT, VLC_TRUE );
- set_description( _("VLM remote control interface") );
- add_category_hint( "VLM", NULL, VLC_FALSE );
- set_capability( "interface", 0 );
- set_callbacks( Open , Close );
-vlc_module_end();
+ TELNETPORT_LONGTEXT, true )
+ add_password( "telnet-password", TELNETPWD_DEFAULT, NULL, TELNETPWD_TEXT,
+ TELNETPWD_LONGTEXT, true )
+ set_description( N_("VLM remote control interface") )
+ add_category_hint( "VLM", NULL, false )
+ set_capability( "interface", 0 )
+ set_callbacks( Open , Close )
+vlc_module_end ()
/*****************************************************************************
* Local prototypes.
} telnet_client_t;
static char *MessageToString( vlm_message_t *, int );
-static void Write_message( telnet_client_t *, vlm_message_t *, char *, int );
+static void Write_message( telnet_client_t *, vlm_message_t *, const char *, int );
struct intf_sys_t
{
* This code relies upon the fact the url.i_port is 0 if the :PORT
* option is missing from --telnet-host.
*/
-static int getPort(intf_thread_t *p_intf, vlc_url_t url, int i_port)
+static int getPort(intf_thread_t *p_intf, const vlc_url_t *url, int i_port)
{
- // Print error if two different ports have been specified
- if (url.i_port != 0 &&
- i_port != TELNETPORT_DEFAULT &&
- url.i_port != i_port )
- {
- msg_Err( p_intf, "ignoring port %d and using %d", url.i_port,
- i_port);
- }
- if (i_port != TELNETPORT_DEFAULT)
- {
- return i_port;
- }
- if (url.i_port != 0)
- {
- return url.i_port;
- }
+ if (i_port == TELNETPORT_DEFAULT && url->i_port != 0)
+ i_port = url->i_port;
+ if (url->i_port != 0 && url->i_port != i_port)
+ // Print error if two different ports have been specified
+ msg_Warn( p_intf, "ignoring port %d (using %d)", url->i_port, i_port );
return i_port;
}
psz_address = config_GetPsz( p_intf, "telnet-host" );
vlc_UrlParse(&url, psz_address, 0);
+ free( psz_address );
// There might be two ports given, resolve any potentially
// conflict
- url.i_port = getPort(p_intf, url, i_telnetport);
+ url.i_port = getPort(p_intf, &url, i_telnetport);
p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
- if( ( p_intf->p_sys->pi_fd = net_ListenTCP( p_intf, url.psz_host, url.i_port ) )
- == NULL )
+ if( !p_intf->p_sys )
+ {
+ vlm_Delete( mediatheque );
+ vlc_UrlClean( &url );
+ return VLC_ENOMEM;
+ }
+ if( ( p_intf->p_sys->pi_fd = net_ListenTCP( p_intf, url.psz_host, url.i_port ) ) == NULL )
{
msg_Err( p_intf, "cannot listen for telnet" );
- vlc_UrlClean(&url);
- free( psz_address );
+ vlm_Delete( mediatheque );
+ vlc_UrlClean( &url );
free( p_intf->p_sys );
return VLC_EGENERIC;
}
p_intf->p_sys->mediatheque = mediatheque;
p_intf->pf_run = Run;
- vlc_UrlClean(&url);
- free( psz_address );
+ vlc_UrlClean( &url );
return VLC_SUCCESS;
}
{
telnet_client_t *cl = p_sys->clients[i];
net_Close( cl->fd );
+ free( cl->buffer_write );
free( cl );
- p_sys->clients[i] = NULL;
}
- if( p_sys->clients != NULL ) free( p_sys->clients );
+ free( p_sys->clients );
net_ListenClose( p_sys->pi_fd );
static void Run( intf_thread_t *p_intf )
{
intf_sys_t *p_sys = p_intf->p_sys;
- struct timeval timeout;
char *psz_password;
+ unsigned nlisten = 0;
+ for (const int *pfd = p_sys->pi_fd; *pfd != -1; pfd++)
+ nlisten++; /* How many listening sockets do we have? */
+
+ /* FIXME: make sure config_* is cancel-safe */
psz_password = config_GetPsz( p_intf, "telnet-password" );
+ vlc_cleanup_push( free, psz_password );
- while( !intf_ShouldDie( p_intf ) )
+ for( ;; )
{
- fd_set fds_read, fds_write;
- int i_handle_max = 0;
- int i_ret, i_len, fd, i;
-
- /* if a new client wants to communicate */
- fd = net_Accept( p_intf, p_sys->pi_fd, p_sys->i_clients > 0 ? 0 : -1 );
- if( fd > 0 )
- {
- telnet_client_t *cl = NULL;
-
- /* to be non blocking */
-#if defined( WIN32 ) || defined( UNDER_CE )
- {
- unsigned long i_dummy = 1;
- ioctlsocket( fd, FIONBIO, &i_dummy );
- }
-#else
- fcntl( fd, F_SETFL, O_NONBLOCK );
-#endif
- cl = malloc( sizeof( telnet_client_t ));
- if( cl )
- {
- char *psz_pwd = strdup( "Password" );
- char *psz_tmp = NULL;
- size_t ctrl_len = strlen( ": \xff\xfb\x01" );
- size_t passwd_len = strlen( psz_pwd );
-
- memset( cl, 0, sizeof(telnet_client_t) );
- cl->i_tel_cmd = 0;
- cl->fd = fd;
- cl->buffer_write = NULL;
- cl->p_buffer_write = cl->buffer_write;
- psz_tmp = malloc( passwd_len + ctrl_len + 1 );
- if( !psz_tmp )
- {
- free( psz_pwd );
- continue;
- }
- memset( psz_tmp, 0, passwd_len + ctrl_len + 1 );
- memcpy( psz_tmp, psz_pwd, passwd_len );
- memcpy( psz_tmp + passwd_len, ": \xff\xfb\x01", ctrl_len );
- Write_message( cl, NULL, psz_tmp, WRITE_MODE_PWD );
- TAB_APPEND( p_sys->i_clients, p_sys->clients, cl );
- free( psz_pwd );
- free( psz_tmp );
- }
- }
+ unsigned ncli = p_sys->i_clients;
+ struct pollfd ufd[ncli + nlisten];
- /* to do a proper select */
- FD_ZERO( &fds_read );
- FD_ZERO( &fds_write );
-
- for( i = 0 ; i < p_sys->i_clients ; i++ )
+ for (unsigned i = 0; i < ncli; i++)
{
telnet_client_t *cl = p_sys->clients[i];
+ ufd[i].fd = cl->fd;
if( (cl->i_mode == WRITE_MODE_PWD) || (cl->i_mode == WRITE_MODE_CMD) )
- {
- FD_SET( cl->fd , &fds_write );
- }
+ ufd[i].events = POLLOUT;
else
- {
- FD_SET( cl->fd , &fds_read );
- }
- i_handle_max = __MAX( i_handle_max, cl->fd );
+ ufd[i].events = POLLIN;
+ ufd[i].revents = 0;
}
- timeout.tv_sec = 0;
- timeout.tv_usec = 500*1000;
-
- i_ret = select( i_handle_max + 1, &fds_read, &fds_write, 0, &timeout );
- if( (i_ret == -1) && (errno != EINTR) )
+ for (unsigned i = 0; i < nlisten; i++)
{
- msg_Warn( p_intf, "cannot select sockets" );
- msleep( 1000 );
- continue;
+ ufd[ncli + i].fd = p_sys->pi_fd[i];
+ ufd[ncli + i].events = POLLIN;
+ ufd[ncli + i].revents = 0;
}
- else if( i_ret <= 0 )
+
+ switch (poll (ufd, sizeof (ufd) / sizeof (ufd[0]), -1))
{
- continue;
+ case -1:
+ if (net_errno != EINTR)
+ {
+ msg_Err (p_intf, "network poll error");
+ msleep (1000);
+ continue;
+ }
+ case 0:
+ continue;
}
+ int canc = vlc_savecancel ();
/* check if there is something to do with the socket */
- for( i = 0 ; i < p_sys->i_clients ; i++ )
+ for (unsigned i = 0; i < ncli; i++)
{
telnet_client_t *cl = p_sys->clients[i];
- if( FD_ISSET(cl->fd , &fds_write) && (cl->i_buffer_write > 0) )
+ if (ufd[i].revents & (POLLERR|POLLHUP))
+ {
+ drop:
+ net_Close( cl->fd );
+ TAB_REMOVE( p_intf->p_sys->i_clients ,
+ p_intf->p_sys->clients , cl );
+ free( cl->buffer_write );
+ free( cl );
+ continue;
+ }
+
+ if (ufd[i].revents & POLLOUT && (cl->i_buffer_write > 0))
{
+ ssize_t i_len;
+
i_len = send( cl->fd, cl->p_buffer_write ,
cl->i_buffer_write, 0 );
if( i_len > 0 )
cl->i_buffer_write -= i_len;
}
}
- else if( FD_ISSET( cl->fd, &fds_read) )
+ if (ufd[i].revents & POLLIN)
{
- int i_end = 0;
- int i_recv;
+ bool end = false;
+ ssize_t i_recv;
while( ((i_recv=recv( cl->fd, cl->p_buffer_read, 1, 0 )) > 0) &&
((cl->p_buffer_read - cl->buffer_read) < 999) )
break;
case '\n':
*cl->p_buffer_read = '\n';
- i_end = 1;
+ end = true;
break;
case TEL_IAC: // telnet specific command
cl->i_tel_cmd = 1;
break;
}
- if( i_end != 0 ) break;
+ if( end ) break;
}
if( (cl->p_buffer_read - cl->buffer_read) == 999 )
cl->i_mode + 2 );
}
- if( i_recv == 0 )
+#ifdef WIN32
+ if( i_recv <= 0 && WSAGetLastError() == WSAEWOULDBLOCK )
{
- net_Close( cl->fd );
- TAB_REMOVE( p_intf->p_sys->i_clients ,
- p_intf->p_sys->clients , cl );
- free( cl );
+ errno = EAGAIN;
}
+#endif
+ if (i_recv <= 0 && ( end || errno != EAGAIN ) )
+ goto drop;
}
}
/* and now we should bidouille the data we received / send */
- for( i = 0 ; i < p_sys->i_clients ; i++ )
+ for(int i = 0 ; i < p_sys->i_clients ; i++ )
{
telnet_client_t *cl = p_sys->clients[i];
- if( (cl->i_mode >= WRITE_MODE_PWD) && (cl->i_buffer_write == 0) )
+ if( cl->i_mode >= WRITE_MODE_PWD && cl->i_buffer_write == 0 )
{
// we have finished to send
cl->i_mode -= 2; // corresponding READ MODE
}
- else if( (cl->i_mode == READ_MODE_PWD) &&
- (*cl->p_buffer_read == '\n') )
+ else if( cl->i_mode == READ_MODE_PWD &&
+ *cl->p_buffer_read == '\n' )
{
*cl->p_buffer_read = '\0';
- if( strcmp( psz_password, cl->buffer_read ) == 0 )
+ if( !psz_password || !strcmp( psz_password, cl->buffer_read ) )
{
- char *psz_welcome = strdup( "Welcome, Master" );
- char *psz_tmp = NULL;
- size_t welcome_len = strlen( psz_welcome );
- size_t ctrl_len = strlen("\xff\xfc\x01\r\n");
-
- psz_tmp = malloc( welcome_len + ctrl_len + 4 + 1 );
- if( !psz_tmp )
- {
- free( psz_welcome );
- continue;
- }
- memset( psz_tmp, 0, welcome_len + ctrl_len + 4 + 1 );
- memcpy( psz_tmp, "\xff\xfc\x01\r\n", ctrl_len );
- memcpy( psz_tmp + ctrl_len, psz_welcome, welcome_len );
- memcpy( psz_tmp + ctrl_len + welcome_len, "\r\n> ", 4 );
- Write_message( cl, NULL, psz_tmp, WRITE_MODE_CMD );
- free( psz_welcome );
- free( psz_tmp );
+ Write_message( cl, NULL, "\xff\xfc\x01\r\nWelcome, "
+ "Master\r\n> ", WRITE_MODE_CMD );
}
else
{
WRITE_MODE_PWD );
}
}
- else if( (cl->i_mode == READ_MODE_CMD) &&
- (*cl->p_buffer_read == '\n') )
+ else if( cl->i_mode == READ_MODE_CMD &&
+ *cl->p_buffer_read == '\n' )
{
/* ok, here is a command line */
if( !strncmp( cl->buffer_read, "logout", 6 ) ||
net_Close( cl->fd );
TAB_REMOVE( p_intf->p_sys->i_clients ,
p_intf->p_sys->clients , cl );
+ free( cl->buffer_write );
free( cl );
}
else if( !strncmp( cl->buffer_read, "shutdown", 8 ) )
{
msg_Err( p_intf, "shutdown requested" );
- p_intf->p_libvlc->b_die = VLC_TRUE;
+ libvlc_Quit( p_intf->p_libvlc );
+ }
+ else if( *cl->buffer_read == '@'
+ && strchr( cl->buffer_read, ' ' ) )
+ {
+ /* Module specific commands (use same syntax as in the
+ * rc interface) */
+ char *psz_name = cl->buffer_read + 1;
+ char *psz_cmd, *psz_arg, *psz_msg;
+ int i_ret;
+
+ psz_cmd = strchr( cl->buffer_read, ' ' );
+ *psz_cmd = '\0'; psz_cmd++;
+ if( ( psz_arg = strchr( psz_cmd, '\n' ) ) ) *psz_arg = '\0';
+ if( ( psz_arg = strchr( psz_cmd, '\r' ) ) ) *psz_arg = '\0';
+ if( ( psz_arg = strchr( psz_cmd, ' ' ) )
+ && *psz_arg )
+ {
+ *psz_arg = '\0';
+ psz_arg++;
+ }
+
+ i_ret = var_Command( p_intf, psz_name, psz_cmd, psz_arg,
+ &psz_msg );
+
+ if( psz_msg )
+ {
+ vlm_message_t *message;
+ message = vlm_MessageNew( "Module command", psz_msg );
+ Write_message( cl, message, NULL, WRITE_MODE_CMD );
+ vlm_MessageDelete( message );
+ free( psz_msg );
+ }
}
else
{
vlm_MessageNew( "logout, quit, exit" , NULL ) );
vlm_MessageAdd( p_my_help,
vlm_MessageNew( "shutdown" , NULL ) );
+ vlm_MessageAdd( p_my_help,
+ vlm_MessageNew( "@moduleinstance command argument",
+ NULL) );
vlm_MessageAdd( message, p_my_help );
}
Write_message( cl, message, NULL, WRITE_MODE_CMD );
vlm_MessageDelete( message );
-
}
}
}
+
+ /* handle new connections */
+ for (unsigned i = 0; i < nlisten; i++)
+ {
+ int fd;
+
+ if (ufd[ncli + i].revents == 0)
+ continue;
+
+ fd = net_AcceptSingle (VLC_OBJECT(p_intf), ufd[ncli + i].fd);
+ if (fd == -1)
+ continue;
+
+ telnet_client_t *cl = calloc( 1, sizeof( telnet_client_t ));
+ if (cl == NULL)
+ {
+ net_Close (fd);
+ continue;
+ }
+
+ cl->i_tel_cmd = 0;
+ cl->fd = fd;
+ cl->buffer_write = NULL;
+ cl->p_buffer_write = cl->buffer_write;
+ Write_message( cl, NULL,
+ "Password: \xff\xfb\x01" , WRITE_MODE_PWD );
+ TAB_APPEND( p_sys->i_clients, p_sys->clients, cl );
+ }
+ vlc_restorecancel( canc );
}
+ vlc_cleanup_run ();
}
static void Write_message( telnet_client_t *client, vlm_message_t *message,
- char *string_message, int i_mode )
+ const char *string_message, int i_mode )
{
char *psz_message;
client->p_buffer_read = client->buffer_read;
(client->p_buffer_read)[0] = 0; // if (cl->p_buffer_read)[0] = '\n'
- if( client->buffer_write ) free( client->buffer_write );
+ free( client->buffer_write );
/* generate the psz_message string */
if( message )
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