Get rid of mmd->filename.
[paraslash.git] / server.c
index e39354e..c7760de 100644 (file)
--- a/server.c
+++ b/server.c
  *
  */
 
+#include <signal.h>
+#include <sys/types.h>
+#include <dirent.h>
 
-
+#include "para.h"
+#include "error.h"
 #include "server.cmdline.h"
-#include "afs_common.h"
+#include "afh.h"
+#include "string.h"
+#include "afs.h"
 #include "server.h"
 #include "vss.h"
 #include "config.h"
 #include "close_on_fork.h"
 #include "send.h"
-#include "error.h"
 #include "net.h"
 #include "daemon.h"
-#include "string.h"
 #include "ipc.h"
 #include "fd.h"
+#include "list.h"
+#include "sched.h"
 #include "signal.h"
 #include "user_list.h"
 
@@ -60,35 +66,6 @@ extern void dccp_send_init(struct sender *);
 extern void http_send_init(struct sender *);
 extern void ortp_send_init(struct sender *);
 
-/* TODO: This is better handled by autoconf */
-/** the list of supported audio file selectors */
-struct audio_file_selector selectors[] = {
-       {
-               .name = "random",
-               .init = random_selector_init,
-               .update_audio_file = NULL,
-       },
-       {
-               .name = "playlist",
-               .init = playlist_selector_init,
-               .update_audio_file = NULL,
-               .pre_select = NULL,
-               .post_select = NULL,
-       },
-#ifdef HAVE_MYSQL
-       {
-               .name = "mysql",
-               .init = mysql_selector_init,
-               .update_audio_file = NULL,
-               .pre_select = NULL,
-               .post_select = NULL,
-       },
-#endif
-       {
-               .name = NULL,
-       }
-};
-
 /** the list of supported senders */
 struct sender senders[] = {
        {
@@ -170,14 +147,12 @@ static void shm_init(void)
                goto err_out;
        mmd_mutex = ret;
 
-       mmd->selector_num = 0;
        mmd->num_played = 0;
        mmd->num_commands = 0;
        mmd->events = 0;
        mmd->num_connects = 0;
        mmd->active_connections = 0;
-       strcpy(mmd->filename, "(none)");
-       mmd->audio_format = -1;
+       strcpy(mmd->afd.path, "(none)");
        mmd->vss_status_flags = VSS_NEXT;
        mmd->new_vss_status_flags = VSS_NEXT;
        mmd->sender_cmd_data.cmd_num = -1;
@@ -278,32 +253,6 @@ static void setup_signal_handling(void)
        }
 }
 
-static void init_selector(void)
-{
-       int i, ret;
-
-       mmd->selector_change = -1; /* no change nec., set to new num by com_chs */
-       if (!conf.selector_given)
-               goto random;
-       for (i = 0; selectors[i].name; i++) {
-               if (strcmp(selectors[i].name, conf.selector_arg))
-                       continue;
-               PARA_NOTICE_LOG("initializing %s audio file selector\n",
-                       selectors[i].name);
-               ret = selectors[i].init(&selectors[i]);
-               if (ret < 0) {
-                       PARA_WARNING_LOG("%s", PARA_STRERROR(-ret));
-                       break;
-               }
-               mmd->selector_num = i;
-               return;
-       }
-       PARA_WARNING_LOG("%s", "falling back to the random selector\n");
-random:
-       mmd->selector_num = 0;
-       selectors[0].init(&selectors[0]); /* always successful */
-}
-
 static unsigned init_network(void)
 {
        int fd, ret = init_tcp_socket(conf.port_arg);
@@ -344,6 +293,36 @@ out:
        exit(EXIT_FAILURE);
 }
 
+uint32_t afs_socket_cookie;
+int afs_socket;
+static pid_t afs_pid;
+
+static void init_afs(void)
+{
+       int ret, afs_server_socket[2];
+
+       ret = socketpair(PF_UNIX, SOCK_DGRAM, 0, afs_server_socket);
+       if (ret < 0)
+               exit(EXIT_FAILURE);
+       afs_socket_cookie = para_random((uint32_t)-1);
+       afs_pid = fork();
+       if (afs_pid < 0)
+               exit(EXIT_FAILURE);
+       if (!afs_pid) { /* child (afs) */
+               close(afs_server_socket[0]);
+               afs_init(afs_socket_cookie, afs_server_socket[1]);
+       }
+       close(afs_server_socket[1]);
+       afs_socket = afs_server_socket[0];
+       ret = mark_fd_nonblock(afs_socket);
+       if (ret < 0)
+               exit(EXIT_FAILURE);
+       add_close_on_fork_list(afs_socket);
+       PARA_INFO_LOG("afs_socket: %d, afs_socket_cookie: %u\n", afs_socket,
+               (unsigned) afs_socket_cookie);
+}
+
+
 static unsigned do_inits(int argc, char **argv)
 {
        /* connector's address information */
@@ -363,12 +342,12 @@ static unsigned do_inits(int argc, char **argv)
        /* become daemon */
        if (conf.daemon_given)
                daemon_init();
-       init_selector();
-//     PARA_ERROR_LOG("num: %d\n", mmd->selector_num);
        PARA_NOTICE_LOG("%s", "initializing virtual streaming system\n");
+       afh_init();
        vss_init();
        mmd->server_pid = getpid();
        setup_signal_handling();
+       init_afs();
        mmd_lock();
        /* init network socket */
        PARA_NOTICE_LOG("%s", "initializing tcp command socket\n");
@@ -377,23 +356,6 @@ static unsigned do_inits(int argc, char **argv)
        return sockfd;
 }
 
-static void change_selector(void)
-{
-       int ret, old = mmd->selector_num, new = mmd->selector_change;
-
-       selectors[old].shutdown();
-       ret = selectors[new].init(&selectors[new]);
-       mmd->selector_change = -1; /* reset */
-       if (ret >= 0) {
-               mmd->selector_num = new;
-               return;
-       }
-       /* init failed */
-       PARA_ERROR_LOG("%s -- switching to the random selector\n", PARA_STRERROR(-ret));
-       selectors[0].init(&selectors[0]);
-       mmd->selector_num = 0;
-}
-
 /*
  * called when server gets SIGHUP or when client invokes hup command.
  */
@@ -403,9 +365,9 @@ static void handle_sighup(void)
        close_log(logfile); /* gets reopened if necessary by parse_config */
        logfile = NULL;
        parse_config(1); /* reopens log */
-       mmd->selector_change = mmd->selector_num; /* do not change selector.. */
-       change_selector(); /* .. just reload */
        init_user_list(user_list_file); /* reload user list */
+       if (afs_pid)
+               kill(afs_pid, SIGHUP);
 }
 
 static void status_refresh(void)
@@ -425,8 +387,8 @@ out:
        prev_events = mmd->events;
        mmd->vss_status_flags = mmd->new_vss_status_flags;
        if (ret) {
-               PARA_DEBUG_LOG("%d events, forcing status update, af = %d\n",
-                       mmd->events, mmd->audio_format);
+               PARA_DEBUG_LOG("%d events, forcing status update\n",
+                       mmd->events);
                killpg(0, SIGUSR1);
        }
 }
@@ -459,26 +421,19 @@ repeat:
        /* check socket and signal pipe in any case */
        para_fd_set(sockfd, &rfds, &max_fileno);
        para_fd_set(signal_pipe, &rfds, &max_fileno);
-       timeout = vss_preselect();
+       timeout = vss_preselect(&rfds, &wfds, &max_fileno);
        status_refresh();
        for (i = 0; senders[i].name; i++) {
                if (senders[i].status != SENDER_ON)
                        continue;
                if (!senders[i].pre_select)
                        continue;
-               senders[i].pre_select( &max_fileno, &rfds, &wfds);
-       }
-       if (selectors[mmd->selector_num].pre_select) {
-               ret = selectors[mmd->selector_num].pre_select(&rfds, &wfds);
-               max_fileno = PARA_MAX(max_fileno, ret);
+               senders[i].pre_select(&max_fileno, &rfds, &wfds);
        }
        mmd_unlock();
        ret = para_select(max_fileno + 1, &rfds, &wfds, timeout);
        mmd_lock();
-       if (mmd->selector_change >= 0)
-               change_selector();
-       if (selectors[mmd->selector_num].post_select)
-               selectors[mmd->selector_num].post_select(&rfds, &wfds);
+       vss_post_select(&rfds, &wfds);
        if (ret < 0)
                goto repeat;
        for (i = 0; senders[i].name; i++) {
@@ -492,23 +447,33 @@ repeat:
        status_refresh();
        if (FD_ISSET(signal_pipe, &rfds)) {
                int sig;
+               pid_t pid;
                sig = para_next_signal();
                switch (sig) {
                case SIGHUP:
                        handle_sighup();
                        break;
                case SIGCHLD:
-                       para_reap_children();
+                       for (;;) {
+                               ret = para_reap_child(&pid);
+                               if (ret <= 0)
+                                       break;
+                               if (pid != afs_pid)
+                                       continue;
+                               PARA_EMERG_LOG("fatal: afs died\n");
+                               goto genocide;
+                       }
                        break;
                /* die on sigint/sigterm. Kill all children too. */
                case SIGINT:
                case SIGTERM:
                        PARA_EMERG_LOG("terminating on signal %d\n", sig);
+genocide:
                        kill(0, SIGTERM);
-                       selectors[mmd->selector_num].shutdown();
                        mutex_destroy(mmd_mutex);
                        shm_detach(mmd);
                        shm_destroy(mmd_shm_id);
+
                        exit(EXIT_FAILURE);
                }
        }