1 /*******************************************************************************
2 * input_vlan.c: vlan management library
4 *******************************************************************************/
6 /*******************************************************************************
8 *******************************************************************************/
15 #include <arpa/inet.h>
17 #include <netinet/in.h>
18 #include <sys/ioctl.h>
19 #include <sys/socket.h>
24 #include "vlc_thread.h"
26 #include "input_vlan.h"
30 /*******************************************************************************
31 * input_vlan_t: vlan library data
32 *******************************************************************************
33 * Store global vlan library data.
34 *******************************************************************************/
35 typedef struct input_vlan_s
40 /*******************************************************************************
42 *******************************************************************************/
43 static int ZeTrucMucheFunction( int Channel );
45 /*******************************************************************************
46 * input_VlanCreate: initialize global vlan method data
47 *******************************************************************************
48 * Initialize vlan input method global data. This function should be called
49 * once before any input thread is created or any call to other input_Vlan*()
50 * function is attempted.
51 *******************************************************************************/
52 int input_VlanCreate( void )
54 /* Allocate structure */
55 p_main->p_vlan = malloc( sizeof( input_vlan_t ) );
56 if( p_main->p_vlan == NULL )
58 intf_ErrMsg("error: %s\n", strerror(ENOMEM));
62 intf_Msg("VLANs initialized\n");
66 /*******************************************************************************
67 * input_VlanDestroy: free global vlan method data
68 *******************************************************************************
69 * Free resources allocated by input_VlanMethodInit. This function should be
70 * called at the end of the program.
71 *******************************************************************************/
72 void input_VlanDestroy( void )
75 free( p_main->p_vlan );
78 /*******************************************************************************
79 * input_VlanJoin: join a vlan
80 *******************************************************************************
81 * This function will try to join a vlan. If the relevant interface is already
82 * on the good vlan, nothing will be done. Else, and if possible (if the
83 * interface is not locked), the vlan server will be contacted and a change will
84 * be requested. The function will block until the change is effective. Note
85 * that once a vlan is no more used, it's interface should be unlocked using
87 * Non 0 will be returned in case of error.
88 *******************************************************************************/
89 int input_VlanJoin( int i_vlan_id )
91 intf_Msg("Joining VLAN %d (channel %d)\n", i_vlan_id + 2, i_vlan_id );
92 return( ZeTrucMucheFunction( i_vlan_id ) ); // ?? join vlan
95 /*******************************************************************************
96 * input_VlanLeave: leave a vlan
97 *******************************************************************************
98 * This function tells the vlan library that the designed interface is no more
99 * locked and than vlan changes can occur.
100 *******************************************************************************/
101 void input_VlanLeave( int i_vlan_id )
103 intf_Msg("Leaving VLAN %d (channel %d)\n", i_vlan_id + 2, i_vlan_id );
104 ZeTrucMucheFunction( 0 ); // ?? join default vlan
107 /* following functions are local */
109 static int ZeTrucMucheFunction( int Channel)
113 struct ifreq interface;
114 struct sockaddr_in sa_server;
115 struct sockaddr_in sa_client;
120 *Looking for informations about the eth0 interface
123 interface.ifr_addr.sa_family = AF_INET;
124 strcpy( interface.ifr_name, main_GetPszVariable( INPUT_IFACE_VAR, INPUT_IFACE_DEFAULT ) );
126 i_socket = socket( AF_INET, SOCK_DGRAM, 0 );
128 /* Looking for the interface IP address */
129 ioctl( i_socket, SIOCGIFDSTADDR, &interface );
130 ipaddr = inet_ntoa((*(struct sockaddr_in *)(&(interface.ifr_addr))).sin_addr );
132 /* Looking for the interface MAC address */
133 ioctl( i_socket, SIOCGIFHWADDR, &interface );
137 * Getting address, port, ... of the server
141 bzero( &sa_server, sizeof(struct sockaddr_in) );
142 /* sin_family is ALWAYS set to AF_INET (see in man 7 ip)*/
143 sa_server.sin_family = AF_INET;
144 /* Giving port on to connect after having convert it*/
145 sa_server.sin_port = htons ( main_GetIntVariable( INPUT_VLAN_PORT_VAR, INPUT_VLAN_PORT_DEFAULT ));
146 /* Giving address after having convert it into binary data*/
147 inet_aton( main_GetPszVariable( INPUT_VLAN_SERVER_VAR, INPUT_VLAN_SERVER_DEFAULT ), &(sa_server.sin_addr) );
150 * Getting address, port, ... of the client
154 bzero( &sa_client, sizeof(struct sockaddr_in) );
155 /* sin_family is ALWAYS set to AF_INET (see in man 7 ip)*/
156 sa_client.sin_family = AF_INET;
157 /* Giving port on to connect after having convert it*/
158 sa_client.sin_port = htons( 0 );
159 /* Giving address after having convert it into binary data*/
160 inet_aton( ipaddr, &(sa_client.sin_addr) );
162 /* Initialization of the socket */
163 i_socket = socket(AF_INET, SOCK_DGRAM, 17 ); // ?? UDP
164 /* SOCK_DGRAM because here we use DATAGRAM
165 * Sachant qu'il y a un #define AF_INET = PF_INET dans sys/socket.h et que PF_INET est le IP protocol family ...
166 * Protocol is in #define, should be 17 for udp */
168 /* Elaborate the message to send */
169 sprintf( mess , "%d %s %2.2x%2.2x%2.2x%2.2x%2.2x%2.2x %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x \n",
171 interface.ifr_hwaddr.sa_data[0] & 0xff,
172 interface.ifr_hwaddr.sa_data[1] & 0xff,
173 interface.ifr_hwaddr.sa_data[2] & 0xff,
174 interface.ifr_hwaddr.sa_data[3] & 0xff,
175 interface.ifr_hwaddr.sa_data[4] & 0xff,
176 interface.ifr_hwaddr.sa_data[5] & 0xff,
177 interface.ifr_hwaddr.sa_data[0] & 0xff,
178 interface.ifr_hwaddr.sa_data[1] & 0xff,
179 interface.ifr_hwaddr.sa_data[2] & 0xff,
180 interface.ifr_hwaddr.sa_data[3] & 0xff,
181 interface.ifr_hwaddr.sa_data[4] & 0xff,
182 interface.ifr_hwaddr.sa_data[5] & 0xff
185 /* Send the message */
186 intf_DbgMsg("%s\n", mess);
187 sendto(i_socket,mess,80,0,(struct sockaddr *)&sa_server,sizeof(struct sockaddr));
189 /*Close the socket */