+static int instanciate_command_args(const char *port, const char *token)
+{
+ char *repl;
+ int i;
+
+ /* instanciate the arguments */
+ for (i = 0 ; config->exec[i] ; i++) {
+ repl = instanciate_string(config->exec[i], port, token);
+ if (!repl)
+ return -1;
+ config->exec[i] = repl;
+ }
+ return 0;
+}
+
+static int execute_command()
+{
+ struct sigaction siga;
+ char port[20];
+ int rc;
+
+ /* check whether a command is to execute or not */
+ if (!config->exec || !config->exec[0])
+ return 0;
+
+ if (SELF_PGROUP)
+ setpgid(0, 0);
+
+ /* install signal handler */
+ memset(&siga, 0, sizeof siga);
+ siga.sa_sigaction = on_sigchld;
+ siga.sa_flags = SA_SIGINFO;
+ sigaction(SIGCHLD, &siga, NULL);
+
+ /* fork now */
+ childpid = fork();
+ if (childpid)
+ return 0;
+
+ /* compute the string for port */
+ if (config->httpdPort)
+ rc = snprintf(port, sizeof port, "%d", config->httpdPort);
+ else
+ rc = snprintf(port, sizeof port, "%cp", SUBST_CHAR);
+ if (rc < 0 || rc >= (int)(sizeof port)) {
+ ERROR("port->txt failed");
+ }
+ else {
+ /* instanciate arguments and environment */
+ if (instanciate_command_args(port, config->token) >= 0
+ && instanciate_environ(port, config->token) >= 0) {
+ /* run */
+ if (!SELF_PGROUP)
+ setpgid(0, 0);
+ execv(config->exec[0], config->exec);
+ ERROR("can't launch %s: %m", config->exec[0]);
+ }
+ }
+ exit(1);
+ return -1;
+}
+
+/*---------------------------------------------------------
+ | job for starting the daemon
+ +--------------------------------------------------------- */
+
+static void start()
+{
+ struct afb_hsrv *hsrv;
+
+ // ------------------ sanity check ----------------------------------------
+ if (config->httpdPort <= 0) {
+ ERROR("no port is defined");
+ goto error;
+ }
+
+ /* set the directories */
+ mkdir(config->workdir, S_IRWXU | S_IRGRP | S_IXGRP);
+ if (chdir(config->workdir) < 0) {
+ ERROR("Can't enter working dir %s", config->workdir);
+ goto error;