int fw_perform_return( gchar *action, GHashTable *conf, peer *p, gchar *result, int size) {
GHashTable *data;
gchar *cmd;
FILE * fd;
int ret=0;
gchar dummy_result[30];
if ( !result ) {
result = dummy_result;
size = sizeof(dummy_result);
}
data = g_hash_dup( conf );
//
// Than add specifics about this particular client, if any
if (p != NULL) {
g_hash_set( data, "IP", p->ip );
g_hash_set( data, "MAC", p->hw );
g_hash_set( data, "Class", "Public" );
}
cmd = conf_string( conf, action );
cmd = parse_template( cmd, data );
g_warning("Got command %s from action %s", cmd, action );
// add data to the environment
g_hash_table_foreach( data, (GHFunc) fw_popen_set_env, NULL );
fd = popen(cmd, "r");
if(fd == NULL) {
g_warning( "popen %s failed: %m", cmd );
ret=1;
}
else if ( fgets(result, size, fd) == NULL ) {
g_warning( "fgets %s failed: %m", cmd );
ret=1;
}
if ( fd && pclose(fd) != 0 ) {
g_warning( "pclose %s failed: %m", cmd );
ret=1;
}
g_hash_free(data);
g_free(cmd);
return ret;
}
static int fw_exec( fw_action *act, GHashTable *conf ) {
GHashTable *data;
GPtrArray *env;
gchar *cmd, **arg, **n;
data = g_hash_dup( conf );
//
// Than add specifics about this particular client, if any
if (act->p != NULL) {
g_hash_set( data, "IP", act->p->ip );
g_hash_set( data, "MAC", act->p->hw );
g_hash_set( data, "Class", "Public" );
}
cmd = conf_string( conf, act->cmd );
cmd = parse_template( cmd, data );
g_message("Got command %s from action %s", cmd, act->cmd );
arg = g_strsplit( cmd, " ", 0 );
// prime the environment with our existing environment
env = g_ptr_array_new();
for ( n = environ; *n != NULL; n++ )
g_ptr_array_add( env, *n );
// Then add everything from the conf file
g_hash_table_foreach( data, (GHFunc) fw_exec_add_env, env );
// Add a closing NULL so execve knows where to lay off.
g_ptr_array_add( env, NULL );
/* We're not cleaning up memory references because
* hopefully the exec won't fail... */
execve( *arg, arg, (char **)env->pdata );
g_error( "execve %s failed: %m", cmd ); // Shouldn't happen.
return -1;
}
