#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 "list.h"
#include "sched.h"
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
int ret, fd = -1, query_shmid, result_shmid;
void *query_shm, *result_shm;
char buf[sizeof(afs_socket_cookie) + sizeof(int)];
- struct sockaddr_un unix_addr;
size_t query_shm_size = sizeof(*cq);
if (query)
*(uint32_t *) buf = afs_socket_cookie;
*(int *) (buf + sizeof(afs_socket_cookie)) = query_shmid;
- ret = get_stream_socket(PF_UNIX);
+ ret = create_remote_socket(conf.afs_socket_arg);
if (ret < 0)
goto out;
fd = ret;
- ret = init_unix_addr(&unix_addr, conf.afs_socket_arg);
- if (ret < 0)
- goto out;
- ret = PARA_CONNECT(fd, &unix_addr);
- if (ret < 0)
- goto out;
ret = send_bin_buffer(fd, buf, sizeof(buf));
if (ret < 0)
goto out;
if (ret < 0)
goto out;
if (ret != sizeof(int)) {
- ret = -E_RECV;
+ ret = -E_AFS_SHORT_READ;
goto out;
}
ret = *(int *) buf;
return ret;
}
-/**
- * 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.
- *
- * \return Positive on success, negative on errors.
- *
- * \sa close_audio_file(), open_and_update_audio_file().
- */
-int open_next_audio_file(struct audio_file_data *afd)
+static int pass_afd(int fd, char *buf, size_t size)
{
- struct osl_row *aft_row;
+ struct msghdr msg = {.msg_iov = NULL};
+ struct cmsghdr *cmsg;
+ char control[255];
int ret;
- for (;;) {
- 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;
+ 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;
}
/**
- * Free all resources which were allocated by open_next_audio_file().
+ * Open the audio file with highest score.
*
- * \param afd The structure previously filled in by open_next_audio_file().
+ * 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 The return value of the underlying call to para_munmap().
+ * \return Standard.
*
- * \sa open_next_audio_file().
+ * \sa open_and_update_audio_file().
*/
-int close_audio_file(struct audio_file_data *afd)
+int open_next_audio_file(void)
{
- free(afd->afhi.chunk_table);
- return para_munmap(afd->map.data, afd->map.size);
+ struct osl_row *aft_row;
+ struct audio_file_data afd;
+ int ret, shmid;
+ char buf[8];
+ long score;
+again:
+ PARA_NOTICE_LOG("getting next audio file\n");
+ ret = score_get_best(&aft_row, &score);
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ goto no_admissible_files;
+ }
+ ret = open_and_update_audio_file(aft_row, score, &afd);
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ ret = score_delete(aft_row);
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+ goto no_admissible_files;
+ }
+ goto again;
+ }
+ shmid = ret;
+ if (!write_ok(server_socket)) {
+ ret = -E_AFS_SOCKET;
+ 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;
+destroy:
+ shm_destroy(shmid);
+ return ret;
+no_admissible_files:
+ *(uint32_t *)buf = NO_ADMISSIBLE_FILES;
+ *(uint32_t *)(buf + 4) = (uint32_t)0;
+ return send_bin_buffer(server_socket, buf, 8);
}
-static enum play_mode init_admissible_files(void)
+/* Never fails if arg == NULL */
+static int activate_mood_or_playlist(char *arg, int *num_admissible)
{
- int ret = 0;
- char *arg = conf.afs_initial_mode_arg;
+ enum play_mode mode;
+ int ret;
- if (conf.afs_initial_mode_given) {
+ if (!arg) {
+ ret = change_current_mood(NULL); /* always successful */
+ mode = PLAY_MODE_MOOD;
+ } else {
if (!strncmp(arg, "p:", 2)) {
ret = playlist_open(arg + 2);
- if (ret >= 0)
- return PLAY_MODE_PLAYLIST;
- goto dummy;
- }
- if (!strncmp(arg, "m:", 2)) {
+ mode = PLAY_MODE_PLAYLIST;
+ } else if (!strncmp(arg, "m:", 2)) {
ret = change_current_mood(arg + 2);
- if (ret >= 0)
- return PLAY_MODE_MOOD;
- goto dummy;
+ mode = PLAY_MODE_MOOD;
+ } else
+ return -E_AFS_SYNTAX;
+ 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;
}
- PARA_ERROR_LOG("bad afs initial mode arg: %s\n", arg);
}
-dummy:
+ return 1;
+}
+
+static int com_select_callback(const struct osl_object *query,
+ struct osl_object *result)
+{
+ struct para_buffer pb = {.buf = NULL};
+ char *arg = query->data;
+ int num_admissible, ret;
+
+ ret = clear_score_table();
if (ret < 0)
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
- PARA_NOTICE_LOG("defaulting to dummy mood\n");
- change_current_mood(""); /* always successful */
- return PLAY_MODE_MOOD;
+ 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 int setup_command_socket_or_die(void)
+int com_select(int fd, int argc, char * const * const argv)
{
int ret;
+ struct osl_object query, result;
+
+ 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);
+ }
+ 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, 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_nonblocking(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(void)
int i, ret;
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;
- do
- afs_tables[i].close();
- while (i--);
+ 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 == SIGHUP) {
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_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
+ unregister_tasks();
+ }
+ 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_nonblocking(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 i, ret;
exit(EXIT_FAILURE);
}
server_socket = socket_fd;
- ret = mark_fd_nonblock(server_socket);
+ ret = mark_fd_nonblocking(server_socket);
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;
- ret = sched(&s);
+ s.default_timeout.tv_usec = 999 * 1000;
+ ret = schedule(&s);
if (ret < 0)
PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
close_afs_tables();
projects / paraslash.git / blobdiff