-/*
- * Copyright (C) 1997 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 1997 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file server.c Paraslash's main server. */
/* Command line options (no config file options). Used in handle_sighup(). */
static struct lls_parse_result *cmdline_lpr;
-/** A random value used in child context for authentication. */
+/**
+ * A random number used to "authenticate" the afs connection.
+ *
+ * para_server picks this number by random before it forks the afs process. The
+ * command handlers know this number as well and write it to the afs socket,
+ * together with the id of the shared memory area which contains the payload of
+ * the afs command. A local process has to know this number to abuse the afs
+ * service provided by the local socket.
+ */
uint32_t afs_socket_cookie;
/** The mutex protecting the shared memory area containing the mmd struct. */
static struct sched sched;
static struct signal_task *signal_task;
+/** The process id of the audio file selector process. */
+pid_t afs_pid = 0;
+
/** The task responsible for server command handling. */
struct server_command_task {
/** TCP port on which para_server listens for connections. */
struct lls_parse_result *cf_lpr, *merged_lpr;
char *home = para_homedir();
- daemon_close_log();
if (OPT_GIVEN(CONFIG_FILE))
cf = para_strdup(OPT_STRING_VAL(CONFIG_FILE));
else
cf = make_message("%s/.paraslash/server.conf", home);
- if (!mmd || getpid() != mmd->afs_pid) {
+ if (!mmd || getpid() != afs_pid) {
if (OPT_GIVEN(USER_LIST))
user_list_file = para_strdup(OPT_STRING_VAL(USER_LIST));
else
PARA_NOTICE_LOG("SIGHUP\n");
parse_config_or_die(true);
- if (mmd->afs_pid)
- kill(mmd->afs_pid, SIGHUP);
+ if (afs_pid != 0)
+ kill(afs_pid, SIGHUP);
}
static int signal_post_select(struct sched *s, __a_unused void *context)
int ret = para_reap_child(&pid);
if (ret <= 0)
break;
- if (pid != mmd->afs_pid)
+ if (pid != afs_pid)
continue;
PARA_EMERG_LOG("fatal: afs died\n");
kill(0, SIGTERM);
* processes get killed immediately by the above kill().
*/
PARA_INFO_LOG("waiting for afs (pid %d) to die\n",
- (int)mmd->afs_pid);
- waitpid(mmd->afs_pid, NULL, 0);
+ (int)afs_pid);
+ waitpid(afs_pid, NULL, 0);
cleanup:
free(mmd->afd.afhi.chunk_table);
close_listed_fds();
memset(sct->argv[i], 0, strlen(sct->argv[i]));
i = sct->argc - 1 - lls_num_inputs(cmdline_lpr);
sprintf(sct->argv[i], "para_server (serving %s)", peer_name);
- handle_connect(new_fd, peer_name);
+ handle_connect(new_fd);
/* never reached*/
out:
if (ret < 0)
static int init_afs(int argc, char **argv)
{
int ret, afs_server_socket[2];
- pid_t afs_pid;
char c;
ret = socketpair(PF_UNIX, SOCK_STREAM, 0, afs_server_socket);
if (afs_pid == 0) { /* child (afs) */
int i;
+ afs_pid = getpid();
for (i = argc - 1; i >= 0; i--)
memset(argv[i], 0, strlen(argv[i]));
i = argc - lls_num_inputs(cmdline_lpr) - 1;
sprintf(argv[i], "para_server (afs)");
close(afs_server_socket[0]);
- afs_init(afs_socket_cookie, afs_server_socket[1]);
+ afs_init(afs_server_socket[1]);
}
- mmd->afs_pid = afs_pid;
close(afs_server_socket[1]);
if (read(afs_server_socket[0], &c, 1) <= 0) {
PARA_EMERG_LOG("early afs exit\n");
/* become daemon */
if (OPT_GIVEN(DAEMON))
daemon_pipe = daemonize(true /* parent waits for SIGTERM */);
- init_random_seed_or_die();
+ crypt_init();
daemon_log_welcome("server");
init_ipc_or_die(); /* init mmd struct and mmd->lock */
daemon_set_start_time();