1 /*****************************************************************************
2 * input_vlan.c: vlan management library
4 *****************************************************************************/
6 /*****************************************************************************
8 *****************************************************************************/
9 #include <errno.h> /* ENOMEM */
10 #include <stdio.h> /* sprintf() */
11 #include <unistd.h> /* close() */
12 #include <string.h> /* strerror(), bzero() */
13 #include <stdlib.h> /* free() */
15 #include <arpa/inet.h> /* inet_ntoa(), inet_aton() */
16 #include <sys/ioctl.h> /* ioctl() */
19 #include <net/if.h> /* interface (arch-dependent) */
25 #include "vlc_thread.h"
27 #include "input_vlan.h"
31 /*****************************************************************************
32 * input_vlan_t: vlan library data
33 *****************************************************************************
34 * Store global vlan library data.
35 *****************************************************************************/
36 typedef struct input_vlan_s
38 int i_vlan_id; /* current vlan number */
39 mtime_t last_change; /* last change date */
42 /*****************************************************************************
44 *****************************************************************************/
45 static int ZeTrucMucheFunction( int Channel );
47 /*****************************************************************************
48 * input_VlanCreate: initialize global vlan method data
49 *****************************************************************************
50 * Initialize vlan input method global data. This function should be called
51 * once before any input thread is created or any call to other input_Vlan*()
52 * function is attempted.
53 *****************************************************************************/
54 int input_VlanCreate( void )
56 /* Allocate structure */
57 p_main->p_vlan = malloc( sizeof( input_vlan_t ) );
58 if( p_main->p_vlan == NULL )
60 intf_ErrMsg("error: %s\n", strerror(ENOMEM));
64 /* Initialize structure */
65 p_main->p_vlan->i_vlan_id = 0;
66 p_main->p_vlan->last_change = 0;
68 intf_Msg("VLANs initialized\n");
72 /*****************************************************************************
73 * input_VlanDestroy: free global vlan method data
74 *****************************************************************************
75 * Free resources allocated by input_VlanMethodInit. This function should be
76 * called at the end of the program.
77 *****************************************************************************/
78 void input_VlanDestroy( void )
80 /* Return to default vlan */
81 if( p_main->p_vlan->i_vlan_id != 0 )
87 free( p_main->p_vlan );
90 /*****************************************************************************
91 * input_VlanJoin: join a vlan
92 *****************************************************************************
93 * This function will try to join a vlan. If the relevant interface is already
94 * on the good vlan, nothing will be done. Else, and if possible (if the
95 * interface is not locked), the vlan server will be contacted and a change will
96 * be requested. The function will block until the change is effective. Note
97 * that once a vlan is no more used, it's interface should be unlocked using
99 * Non 0 will be returned in case of error.
100 *****************************************************************************/
101 int input_VlanJoin( int i_vlan_id )
103 /* If last change is too recent, wait a while */
104 if( mdate() - p_main->p_vlan->last_change < INPUT_VLAN_CHANGE_DELAY )
106 intf_Msg("Waiting before changing VLAN...\n");
107 mwait( p_main->p_vlan->last_change + INPUT_VLAN_CHANGE_DELAY );
109 p_main->p_vlan->last_change = mdate();
110 p_main->p_vlan->i_vlan_id = i_vlan_id;
112 intf_Msg("Joining VLAN %d (channel %d)\n", i_vlan_id + 2, i_vlan_id );
113 return( ZeTrucMucheFunction( i_vlan_id ) ); /* FIXME: join vlan ?? */
116 /*****************************************************************************
117 * input_VlanLeave: leave a vlan
118 *****************************************************************************
119 * This function tells the vlan library that the designed interface is no more
120 * locked and than vlan changes can occur.
121 *****************************************************************************/
122 void input_VlanLeave( int i_vlan_id )
127 /* following functions are local */
129 static int ZeTrucMucheFunction( int Channel)
134 struct ifreq interface;
135 struct sockaddr_in sa_server;
136 struct sockaddr_in sa_client;
140 *Looking for informations about the eth0 interface
143 interface.ifr_addr.sa_family = AF_INET;
144 strcpy( interface.ifr_name, main_GetPszVariable( INPUT_IFACE_VAR, INPUT_IFACE_DEFAULT ) );
146 i_socket = socket( AF_INET, SOCK_DGRAM, 0 );
148 /* Looking for the interface IP address */
149 ioctl( i_socket, SIOCGIFDSTADDR, &interface );
150 ipaddr = inet_ntoa((*(struct sockaddr_in *)(&(interface.ifr_addr))).sin_addr );
152 /* Looking for the interface MAC address */
153 ioctl( i_socket, SIOCGIFHWADDR, &interface );
157 * Getting address, port, ... of the server
161 bzero( &sa_server, sizeof(struct sockaddr_in) );
162 /* sin_family is ALWAYS set to AF_INET (see in man 7 ip)*/
163 sa_server.sin_family = AF_INET;
164 /* Giving port on to connect after having convert it*/
165 sa_server.sin_port = htons ( main_GetIntVariable( INPUT_VLAN_PORT_VAR, INPUT_VLAN_PORT_DEFAULT ));
166 /* Giving address after having convert it into binary data*/
167 inet_aton( main_GetPszVariable( INPUT_VLAN_SERVER_VAR, INPUT_VLAN_SERVER_DEFAULT ), &(sa_server.sin_addr) );
170 * Getting address, port, ... of the client
174 bzero( &sa_client, sizeof(struct sockaddr_in) );
175 /* sin_family is ALWAYS set to AF_INET (see in man 7 ip)*/
176 sa_client.sin_family = AF_INET;
177 /* Giving port on to connect after having convert it*/
178 sa_client.sin_port = htons( 0 );
179 /* Giving address after having convert it into binary data*/
180 inet_aton( ipaddr, &(sa_client.sin_addr) );
182 /* Initialization of the socket */
183 i_socket = socket(AF_INET, SOCK_DGRAM, 17 ); /* XXX?? UDP */
184 /* SOCK_DGRAM because here we use DATAGRAM
185 * Sachant qu'il y a un #define AF_INET = PF_INET dans sys/socket.h et que PF_INET est le IP protocol family ...
186 * Protocol is in #define, should be 17 for udp */
188 /* Elaborate the message to send */
189 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",
191 interface.ifr_hwaddr.sa_data[0] & 0xff,
192 interface.ifr_hwaddr.sa_data[1] & 0xff,
193 interface.ifr_hwaddr.sa_data[2] & 0xff,
194 interface.ifr_hwaddr.sa_data[3] & 0xff,
195 interface.ifr_hwaddr.sa_data[4] & 0xff,
196 interface.ifr_hwaddr.sa_data[5] & 0xff,
197 interface.ifr_hwaddr.sa_data[0] & 0xff,
198 interface.ifr_hwaddr.sa_data[1] & 0xff,
199 interface.ifr_hwaddr.sa_data[2] & 0xff,
200 interface.ifr_hwaddr.sa_data[3] & 0xff,
201 interface.ifr_hwaddr.sa_data[4] & 0xff,
202 interface.ifr_hwaddr.sa_data[5] & 0xff
205 /* Send the message */
206 intf_DbgMsg("%s\n", mess);
207 sendto(i_socket,mess,80,0,(struct sockaddr *)&sa_server,sizeof(struct sockaddr));
209 /*Close the socket */