#include <fnmatch.h>
#include "server.cmdline.h"
#include "para.h"
+#include "error.h"
+#include "string.h"
#include "afh.h"
+#include "afs.h"
#include "server.h"
-#include "error.h"
#include <dirent.h> /* readdir() */
#include <sys/mman.h>
#include <sys/time.h>
#include "net.h"
-#include "afs.h"
#include "ipc.h"
-#include "string.h"
#include "list.h"
#include "sched.h"
#include "signal.h"
NUM_AFS_TABLES
};
-static struct table_info afs_tables[NUM_AFS_TABLES];
+static struct afs_table afs_tables[NUM_AFS_TABLES] = {
+ [TBLNUM_AUDIO_FILES] = {.init = aft_init},
+ [TBLNUM_ATTRIBUTES] = {.init = attribute_init},
+ [TBLNUM_SCORES] = {.init = score_init},
+ [TBLNUM_MOODS] = {.init = moods_init},
+ [TBLNUM_LYRICS] = {.init = lyrics_init},
+ [TBLNUM_IMAGES] = {.init = images_init},
+ [TBLNUM_PLAYLIST] = {.init = playlists_init},
+};
struct command_task {
/** The file descriptor for the local socket. */
struct task task;
};
+extern struct misc_meta_data *mmd;
+
+static int server_socket;
+static struct command_task command_task_struct;
+static struct signal_task signal_task_struct;
+
+static enum play_mode current_play_mode;
+static char *current_mop; /* mode or playlist specifier. NULL means dummy mooe */
+
+
/**
* A random number used to "authenticate" the connection.
*
* \param result Callback result will be stored here.
*
* This function creates a shared memory area, copies the buffer pointed to by
- * \a buf to that area and notifies the afs process that \a f should be
+ * query to that area and notifies the afs process that \a f should be
* called ASAP.
*
* \return Negative, on errors, the return value of the callback function
return ret;
}
+static int pass_afd(int fd, char *buf, size_t size)
+{
+ struct msghdr msg = {.msg_iov = NULL};
+ struct cmsghdr *cmsg;
+ char control[255];
+ int ret;
+ struct iovec iov;
+
+ iov.iov_base = buf;
+ iov.iov_len = size;
+
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+
+ msg.msg_control = control;
+ msg.msg_controllen = sizeof(control);
+
+ cmsg = CMSG_FIRSTHDR(&msg);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_RIGHTS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+ *(int *)CMSG_DATA(cmsg) = fd;
+
+ /* Sum of the length of all control messages in the buffer */
+ msg.msg_controllen = cmsg->cmsg_len;
+ PARA_DEBUG_LOG("passing %zu bytes and fd %d\n", size, fd);
+ ret = sendmsg(server_socket, &msg, 0);
+ if (ret < 0) {
+ ret = -ERRNO_TO_PARA_ERROR(errno);
+ return ret;
+ }
+ return 1;
+}
+
/**
* Open the audio file with highest score.
*
- * \param afd Audio file data is returned here.
- *
- * This stores all information for streaming the "best" audio file
- * in the \a afd structure.
+ * This stores all information for streaming the "best" audio file in a shared
+ * memory area. The id of that area and an open file descriptor for the next
+ * audio file are passed to the server process.
*
- * \return Positive on success, negative on errors.
+ * \return Standard.
*
- * \sa close_audio_file(), open_and_update_audio_file().
+ * \sa open_and_update_audio_file().
*/
-int open_next_audio_file(struct audio_file_data *afd)
+int open_next_audio_file(void)
{
struct osl_row *aft_row;
+ struct audio_file_data afd;
+ int ret, shmid;
+ char buf[8];
+
+ PARA_NOTICE_LOG("getting next audio file\n");
+ ret = score_get_best(&aft_row, &afd.score);
+ if (ret < 0)
+ return ret;
+ ret = open_and_update_audio_file(aft_row, &afd);
+ if (ret < 0)
+ return ret;
+ shmid = ret;
+ if (!write_ok(server_socket)) {
+ PARA_EMERG_LOG("afs_socket not writable\n");
+ goto destroy;
+ }
+ *(uint32_t *)buf = NEXT_AUDIO_FILE;
+ *(uint32_t *)(buf + 4) = (uint32_t)shmid;
+ ret = pass_afd(afd.fd, buf, 8);
+ close(afd.fd);
+ if (ret >= 0)
+ return ret;
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+destroy:
+ shm_destroy(shmid);
+ return ret;
+}
+
+/* Never fails if arg == NULL */
+static int activate_mood_or_playlist(char *arg, int *num_admissible)
+{
+ enum play_mode mode;
int ret;
- for (;;) {
- ret = score_get_best(&aft_row, &afd->score);
+
+ if (!arg) {
+ ret = change_current_mood(NULL); /* always successful */
+ mode = PLAY_MODE_MOOD;
+ } else {
+ if (!strncmp(arg, "p:", 2)) {
+ ret = playlist_open(arg + 2);
+ mode = PLAY_MODE_PLAYLIST;
+ } else if (!strncmp(arg, "m:", 2)) {
+ ret = change_current_mood(arg + 2);
+ mode = PLAY_MODE_MOOD;
+ } else
+ ret = -E_AFS_SYNTAX;
if (ret < 0)
return ret;
- ret = open_and_update_audio_file(aft_row, afd);
- if (ret >= 0)
- return ret;
}
+ if (num_admissible)
+ *num_admissible = ret;
+ current_play_mode = mode;
+ if (arg != current_mop) {
+ free(current_mop);
+ if (arg) {
+ current_mop = para_strdup(arg);
+ mmd_lock();
+ strncpy(mmd->afs_mode_string, arg,
+ sizeof(mmd->afs_mode_string));
+ mmd->afs_mode_string[sizeof(mmd->afs_mode_string) - 1] = '\0';
+ mmd_unlock();
+ } else {
+ mmd_lock();
+ strcpy(mmd->afs_mode_string, "dummy");
+ mmd_unlock();
+ current_mop = NULL;
+ }
+ }
+ return 1;
}
-/**
- * Free all resources which were allocated by open_next_audio_file().
- *
- * \param afd The structure previously filled in by open_next_audio_file().
- *
- * \return The return value of the underlying call to para_munmap().
- *
- * \sa open_next_audio_file().
- */
-int close_audio_file(struct audio_file_data *afd)
+static int com_select_callback(const struct osl_object *query,
+ struct osl_object *result)
{
- free(afd->afhi.chunk_table);
- return para_munmap(afd->map.data, afd->map.size);
+ struct para_buffer pb = {.buf = NULL};
+ char *arg = query->data;
+ int num_admissible, ret;
+
+ ret = clear_score_table();
+ if (ret < 0)
+ return ret;
+ if (current_play_mode == PLAY_MODE_MOOD)
+ close_current_mood();
+ else
+ playlist_close();
+ ret = activate_mood_or_playlist(arg, &num_admissible);
+ if (ret < 0) {
+ para_printf(&pb, "%s\n", PARA_STRERROR(-ret));
+ para_printf(&pb, "switching back to %s\n", current_mop?
+ current_mop : "dummy");
+ ret = activate_mood_or_playlist(current_mop, &num_admissible);
+ if (ret < 0) {
+ para_printf(&pb, "failed, switching to dummy\n");
+ activate_mood_or_playlist(NULL, &num_admissible);
+ }
+ }
+ para_printf(&pb, "activated %s (%d admissible files)\n", current_mop?
+ current_mop : "dummy mood", num_admissible);
+ result->data = pb.buf;
+ result->size = pb.size;
+ return 1;
}
-static enum play_mode init_admissible_files(void)
+int com_select(int fd, int argc, char * const * const argv)
{
int ret;
+ struct osl_object query, result;
- if (conf.mood_given) {
- ret = change_current_mood(conf.mood_arg);
- if (ret >= 0) {
- if (conf.playlist_given)
- PARA_WARNING_LOG("ignoring playlist %s\n",
- conf.playlist_arg);
- return PLAY_MODE_MOOD;
- }
- }
- if (conf.playlist_given) {
- ret = playlist_open(conf.playlist_arg);
- if (ret >= 0)
- return PLAY_MODE_PLAYLIST;
+ if (argc != 2)
+ return -E_AFS_SYNTAX;
+ query.data = argv[1];
+ query.size = strlen(argv[1]) + 1;
+ ret = send_callback_request(com_select_callback, &query,
+ &result);
+ if (ret > 0 && result.data && result.size) {
+ ret = send_va_buffer(fd, "%s", (char *)result.data);
+ free(result.data);
}
- ret = change_current_mood(NULL); /* open first available mood */
- if (ret >= 0)
- return PLAY_MODE_MOOD;
- change_current_mood(""); /* open dummy mood, always successful */
- return PLAY_MODE_MOOD;
+ return ret;
+}
+
+static void init_admissible_files(char *arg)
+{
+ if (activate_mood_or_playlist(arg, NULL) < 0)
+ activate_mood_or_playlist(NULL, NULL); /* always successful */
}
static int setup_command_socket_or_die(void)
{
- int ret;
+ int ret, socket_fd;
char *socket_name = conf.afs_socket_arg;
struct sockaddr_un unix_addr;
PARA_EMERG_LOG("%s: %s\n", PARA_STRERROR(-ret), socket_name);
exit(EXIT_FAILURE);
}
- if (listen(ret , 5) < 0) {
- PARA_EMERG_LOG("%s", "can not listen on socket\n");
+ socket_fd = ret;
+ if (listen(socket_fd , 5) < 0) {
+ PARA_EMERG_LOG("can not listen on socket\n");
exit(EXIT_FAILURE);
}
- PARA_INFO_LOG("listening on command socket %s (fd %d)\n", socket_name,
- ret);
- return ret;
+ ret = mark_fd_nonblock(socket_fd);
+ if (ret < 0) {
+ close(socket_fd);
+ return ret;
+ }
+ PARA_INFO_LOG("listening on socket %s (fd %d)\n", socket_name, ret);
+ return socket_fd;
}
-static void close_afs_tables(enum osl_close_flags flags)
+static void close_afs_tables(void)
{
+ int i;
PARA_NOTICE_LOG("closing afs_tables\n");
- score_shutdown(flags);
- attribute_shutdown(flags);
- close_current_mood();
- playlist_close();
- moods_shutdown(flags);
- playlists_shutdown(flags);
- lyrics_shutdown(flags);
- images_shutdown(flags);
- aft_shutdown(flags);
+ for (i = 0; i < NUM_AFS_TABLES; i++)
+ afs_tables[i].close();
}
static char *database_dir;
-static int make_database_dir(void)
+static void get_database_dir(void)
{
- int ret;
-
if (!database_dir) {
if (conf.afs_database_dir_given)
database_dir = para_strdup(conf.afs_database_dir_arg);
}
}
PARA_INFO_LOG("afs_database dir %s\n", database_dir);
+}
+
+static int make_database_dir(void)
+{
+ int ret;
+
+ get_database_dir();
ret = para_mkdir(database_dir, 0777);
if (ret >= 0 || is_errno(-ret, EEXIST))
return 1;
- free(database_dir);
- database_dir = NULL;
return ret;
}
-
static int open_afs_tables(void)
{
- int ret = make_database_dir();
+ int i, ret;
- if (ret < 0)
- return ret;
- ret = attribute_init(&afs_tables[TBLNUM_ATTRIBUTES], database_dir);
- if (ret < 0)
+ get_database_dir();
+ PARA_NOTICE_LOG("opening %u osl tables in %s\n", NUM_AFS_TABLES,
+ database_dir);
+ for (i = 0; i < NUM_AFS_TABLES; i++) {
+ ret = afs_tables[i].open(database_dir);
+ if (ret >= 0)
+ continue;
+ PARA_ERROR_LOG("%s init: %s\n", afs_tables[i].name,
+ PARA_STRERROR(-ret));
+ break;
+ }
+ if (ret >= 0)
return ret;
- ret = moods_init(&afs_tables[TBLNUM_MOODS], database_dir);
- if (ret < 0)
- goto moods_init_error;
- ret = playlists_init(&afs_tables[TBLNUM_PLAYLIST], database_dir);
- if (ret < 0)
- goto playlists_init_error;
- ret = lyrics_init(&afs_tables[TBLNUM_LYRICS], database_dir);
- if (ret < 0)
- goto lyrics_init_error;
- ret = images_init(&afs_tables[TBLNUM_IMAGES], database_dir);
- if (ret < 0)
- goto images_init_error;
- ret = score_init(&afs_tables[TBLNUM_SCORES], database_dir);
- if (ret < 0)
- goto score_init_error;
- ret = aft_init(&afs_tables[TBLNUM_AUDIO_FILES], database_dir);
- if (ret < 0)
- goto aft_init_error;
- return 1;
-
-aft_init_error:
- score_shutdown(OSL_MARK_CLEAN);
-score_init_error:
- images_shutdown(OSL_MARK_CLEAN);
-images_init_error:
- lyrics_shutdown(OSL_MARK_CLEAN);
-lyrics_init_error:
- playlists_shutdown(OSL_MARK_CLEAN);
-playlists_init_error:
- moods_shutdown(OSL_MARK_CLEAN);
-moods_init_error:
- attribute_shutdown(OSL_MARK_CLEAN);
+ while (i)
+ afs_tables[--i].close();
return ret;
}
-static int server_socket;
-static struct command_task command_task_struct;
-static struct signal_task signal_task_struct;
-
static void unregister_tasks(void)
{
unregister_task(&command_task_struct.task);
static void signal_post_select(struct sched *s, struct task *t)
{
struct signal_task *st = t->private_data;
+ t->ret = -E_AFS_PARENT_DIED;
+ if (getppid() == 1)
+ goto err;
t->ret = 1;
if (!FD_ISSET(st->fd, &s->rfds))
return;
if (st->signum == SIGUSR1)
return; /* ignore SIGUSR1 */
if (st->signum == SIGHUP) {
- close_afs_tables(OSL_MARK_CLEAN);
+ close_afs_tables();
t->ret = open_afs_tables();
+ if (t->ret < 0)
+ goto err;
+ init_admissible_files(current_mop);
return;
}
- PARA_NOTICE_LOG("caught signal %d\n", st->signum);
t->ret = -E_AFS_SIGNAL;
+err:
+ PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
unregister_tasks();
}
static struct list_head afs_client_list;
+/** Describes on connected afs client. */
struct afs_client {
+ /** Position in the afs client list. */
struct list_head node;
+ /** The socket file descriptor for this client. */
int fd;
+ /** The time the client connected. */
struct timeval connect_time;
};
struct command_task *ct = t->private_data;
struct afs_client *client;
+ para_fd_set(server_socket, &s->rfds, &s->max_fileno);
para_fd_set(ct->fd, &s->rfds, &s->max_fileno);
list_for_each_entry(client, &afs_client_list, node)
para_fd_set(client->fd, &s->rfds, &s->max_fileno);
return ret;
}
+static void execute_server_command(void)
+{
+ char buf[8];
+ int ret = recv_bin_buffer(server_socket, buf, sizeof(buf) - 1);
+
+ if (ret <= 0) {
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ return;
+ }
+ buf[ret] = '\0';
+ PARA_DEBUG_LOG("received: %s\n", buf);
+ if (!strcmp(buf, "new")) {
+ ret = open_next_audio_file();
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ return;
+ }
+ PARA_ERROR_LOG("unknown command\n");
+
+}
+
static void execute_afs_command(int fd, uint32_t expected_cookie)
{
uint32_t cookie;
struct command_task *ct = t->private_data;
struct sockaddr_un unix_addr;
struct afs_client *client, *tmp;
+ int fd;
+ if (FD_ISSET(server_socket, &s->rfds))
+ execute_server_command();
- /* First, check the list of connected clients. */
+ /* Check the list of connected clients. */
list_for_each_entry_safe(client, tmp, &afs_client_list, node) {
if (FD_ISSET(client->fd, &s->rfds))
execute_afs_command(client->fd, ct->cookie);
list_del(&client->node);
free(client);
}
- /* Next, accept connections on the local socket. */
+ /* Accept connections on the local socket. */
if (!FD_ISSET(ct->fd, &s->rfds))
goto out;
t->ret = para_accept(ct->fd, &unix_addr, sizeof(unix_addr));
PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
goto out;
}
+ fd = t->ret;
+ t->ret = mark_fd_nonblock(fd);
+ if (t->ret < 0) {
+ PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
+ close(fd);
+ goto out;
+ }
client = para_malloc(sizeof(*client));
- client->fd = t->ret;
+ client->fd = fd;
client->connect_time = *now;
para_list_add(&client->node, &afs_client_list);
out:
*/
__noreturn void afs_init(uint32_t cookie, int socket_fd)
{
- enum play_mode current_play_mode;
struct sched s;
- int ret;
+ int i, ret;
INIT_LIST_HEAD(&afs_client_list);
+ for (i = 0; i < NUM_AFS_TABLES; i++)
+ afs_tables[i].init(&afs_tables[i]);
ret = open_afs_tables();
if (ret < 0) {
exit(EXIT_FAILURE);
PARA_INFO_LOG("server_socket: %d, afs_socket_cookie: %u\n",
server_socket, (unsigned) cookie);
- current_play_mode = init_admissible_files();
+ init_admissible_files(conf.afs_initial_mode_arg);
register_tasks(cookie);
s.default_timeout.tv_sec = 0;
- s.default_timeout.tv_usec = 99 * 1000;
+ s.default_timeout.tv_usec = 999 * 1000;
ret = sched(&s);
if (ret < 0)
PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
- close_afs_tables(OSL_MARK_CLEAN);
+ close_afs_tables();
exit(EXIT_FAILURE);
}
uint32_t table_mask = *(uint32_t *)query->data;
int i, ret;
- close_afs_tables(OSL_MARK_CLEAN);
+ close_afs_tables();
for (i = 0; i < NUM_AFS_TABLES; i++) {
- struct table_info *ti = afs_tables + i;
+ struct afs_table *t = &afs_tables[i];
- if (ti->flags & TBLFLAG_SKIP_CREATE)
- continue;
if (!(table_mask & (1 << i)))
continue;
- ret = osl_create_table(ti->desc);
+ if (!t->create)
+ continue;
+ ret = t->create(database_dir);
if (ret < 0)
return ret;
}
struct osl_object query = {.data = &table_mask,
.size = sizeof(table_mask)};
+ ret = make_database_dir();
+ if (ret < 0)
+ return ret;
if (argc != 1) {
table_mask = 0;
for (i = 1; i < argc; i++) {
for (j = 0; j < NUM_AFS_TABLES; j++) {
- struct table_info *ti = afs_tables + j;
+ struct afs_table *t = &afs_tables[j];
- if (ti->flags & TBLFLAG_SKIP_CREATE)
- continue;
- if (strcmp(argv[i], ti->desc->name))
+ if (strcmp(argv[i], t->name))
continue;
table_mask |= (1 << j);
break;
}
return 1;
}
+
+void afs_event(enum afs_events event, struct para_buffer *pb,
+ void *data)
+{
+ int i, ret;
+
+ for (i = 0; i < NUM_AFS_TABLES; i++) {
+ struct afs_table *t = &afs_tables[i];
+ if (!t->event_handler)
+ continue;
+ ret = t->event_handler(event, pb, data);
+ if (ret < 0)
+ PARA_CRIT_LOG("%s\n", PARA_STRERROR(-ret));
+ }
+}
+
+int images_event_handler(__a_unused enum afs_events event,
+ __a_unused struct para_buffer *pb, __a_unused void *data)
+{
+ return 1;
+}
+
+int lyrics_event_handler(__a_unused enum afs_events event,
+ __a_unused struct para_buffer *pb, __a_unused void *data)
+{
+ return 1;
+}
projects / paraslash.git / blobdiff