/** \file afs.c Paraslash's audio file selector. */
+#include <signal.h>
+#include <fnmatch.h>
#include "server.cmdline.h"
#include "para.h"
+#include "string.h"
#include "afh.h"
#include "server.h"
#include "error.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. */
};
/**
- * Ask the parent process to call a given function.
+ * Ask the afs process to call a given function.
*
* \param f The function to be called.
* \param query Pointer to arbitrary data for the callback.
return send_option_arg_callback_request(NULL, argc, argv, f, result);
}
+static int action_if_pattern_matches(struct osl_row *row, void *data)
+{
+ struct pattern_match_data *pmd = data;
+ struct osl_object name_obj;
+ const char *p, *name;
+ int ret = osl_get_object(pmd->table, row, pmd->match_col_num, &name_obj);
+ const char *pattern_txt = (const char *)pmd->patterns.data;
+
+ if (ret < 0)
+ return ret;
+ name = (char *)name_obj.data;
+ if ((!name || !*name) && (pmd->pm_flags & PM_SKIP_EMPTY_NAME))
+ return 1;
+ if (!pmd->patterns.size && (pmd->pm_flags & PM_NO_PATTERN_MATCHES_EVERYTHING))
+ return pmd->action(pmd->table, row, name, pmd->data);
+ for (p = pattern_txt; p < pattern_txt + pmd->patterns.size;
+ p += strlen(p) + 1) {
+ ret = fnmatch(p, name, pmd->fnmatch_flags);
+ if (ret == FNM_NOMATCH)
+ continue;
+ if (ret)
+ return -E_FNMATCH;
+ return pmd->action(pmd->table, row, name, pmd->data);
+ }
+ return 1;
+}
+
+/**
+ * Execute the given function for each matching row.
+ *
+ * \param pmd Describes what to match and how.
+ *
+ * \return The return value of the underlying call to osl_rbtree_loop()
+ * or osl_rbtree_loop_reverse().
+ */
+int for_each_matching_row(struct pattern_match_data *pmd)
+{
+ if (pmd->pm_flags & PM_REVERSE_LOOP)
+ return osl_rbtree_loop_reverse(pmd->table, pmd->loop_col_num, pmd,
+ action_if_pattern_matches);
+ return osl_rbtree_loop(pmd->table, pmd->loop_col_num, pmd,
+ action_if_pattern_matches);
+}
+
/**
* Compare two osl objects of string type.
*
return strncmp(str1, str2, PARA_MIN(obj1->size, obj2->size));
}
-/**
- * A wrapper for strtol(3).
- *
- * \param str The string to be converted to a long integer.
- * \param result The converted value is stored here.
- *
- * \return Positive on success, -E_ATOL on errors.
- *
- * \sa strtol(3), atoi(3).
- */
-int para_atol(const char *str, long *result)
-{
- char *endptr;
- long val;
- int ret, base = 10;
-
- errno = 0; /* To distinguish success/failure after call */
- val = strtol(str, &endptr, base);
- ret = -E_ATOL;
- if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
- goto out; /* overflow */
- if (errno != 0 && val == 0)
- goto out; /* other error */
- if (endptr == str)
- goto out; /* No digits were found */
- if (*endptr != '\0')
- goto out; /* Further characters after number */
- *result = val;
- ret = 1;
-out:
- return ret;
-}
-
-
/*
* write input from fd to dynamically allocated buffer,
* but maximal max_size byte.
return para_munmap(afd->map.data, afd->map.size);
}
-#if 0
-static void play_loop(enum play_mode current_play_mode)
-{
- int i, ret;
- struct audio_file_data afd;
-
- afd.current_play_mode = current_play_mode;
- for (i = 0; i < 0; i++) {
- ret = open_next_audio_file(&afd);
- if (ret < 0) {
- PARA_ERROR_LOG("failed to open next audio file: %d\n", ret);
- return;
- }
- PARA_NOTICE_LOG("next audio file: %s, score: %li\n", afd.path, afd.score);
- sleep(1);
- close_audio_file(&afd);
- }
-}
-#endif
-
-
static enum play_mode init_admissible_files(void)
{
- int ret;
- char *given_mood, *given_playlist;
-
- given_mood = "mood_that_was_given_at_the_command_line";
- given_playlist = "given_playlist";
-
- if (given_mood) {
- ret = mood_open(given_mood);
- if (ret >= 0) {
- if (given_playlist)
- PARA_WARNING_LOG("ignoring playlist %s\n",
- given_playlist);
- return PLAY_MODE_MOOD;
+ int ret = 0;
+ char *arg = conf.afs_initial_mode_arg;
+
+ if (conf.afs_initial_mode_given) {
+ if (!strncmp(arg, "p:", 2)) {
+ ret = playlist_open(arg + 2);
+ if (ret >= 0)
+ return PLAY_MODE_PLAYLIST;
+ goto dummy;
}
+ if (!strncmp(arg, "m:", 2)) {
+ ret = change_current_mood(arg + 2);
+ if (ret >= 0)
+ return PLAY_MODE_MOOD;
+ goto dummy;
+ }
+ PARA_ERROR_LOG("bad afs initial mode arg: %s\n", arg);
}
- if (given_playlist) {
- ret = playlist_open(given_playlist);
- if (ret >= 0)
- return PLAY_MODE_PLAYLIST;
- }
- ret = mood_open(NULL); /* open first available mood */
- if (ret >= 0)
- return PLAY_MODE_MOOD;
- mood_open(""); /* open dummy mood, always successful */
+dummy:
+ 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;
}
+static void close_afs_tables(void)
+{
+ int i;
+ PARA_NOTICE_LOG("closing afs_tables\n");
+ for (i = 0; i < NUM_AFS_TABLES; i++)
+ afs_tables[i].close();
+}
+
+static char *database_dir;
+
+static void get_database_dir(void)
+{
+ if (!database_dir) {
+ if (conf.afs_database_dir_given)
+ database_dir = para_strdup(conf.afs_database_dir_arg);
+ else {
+ char *home = para_homedir();
+ database_dir = make_message(
+ "%s/.paraslash/afs_database", home);
+ free(home);
+ }
+ }
+ 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;
+ return ret;
+}
+
+static int open_afs_tables(void)
+{
+ int i, ret;
+
+ get_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));
+ }
+ if (ret >= 0)
+ return ret;
+ do
+ afs_tables[i].close();
+ while (i--);
+ return ret;
+}
+
static int server_socket;
static struct command_task command_task_struct;
static struct signal_task signal_task_struct;
unregister_task(&signal_task_struct.task);
}
-static void close_afs_tables(enum osl_close_flags flags)
-{
- PARA_NOTICE_LOG("closing afs_tables\n");
- score_shutdown(flags);
- attribute_shutdown(flags);
- mood_close();
- playlist_close();
- moods_shutdown(flags);
- playlists_shutdown(flags);
- lyrics_shutdown(flags);
- images_shutdown(flags);
- aft_shutdown(flags);
-}
-
static void signal_pre_select(struct sched *s, struct task *t)
{
struct signal_task *st = t->private_data;
t->ret = 1;
if (st->signum == SIGUSR1)
return; /* ignore SIGUSR1 */
+ if (st->signum == SIGHUP) {
+ close_afs_tables();
+ t->ret = open_afs_tables();
+ return;
+ }
PARA_NOTICE_LOG("caught signal %d\n", st->signum);
- t->ret = -E_SIGNAL_CAUGHT;
+ t->ret = -E_AFS_SIGNAL;
unregister_tasks();
}
para_install_sighandler(SIGINT);
para_install_sighandler(SIGTERM);
para_install_sighandler(SIGPIPE);
+ para_install_sighandler(SIGHUP);
st->task.pre_select = signal_pre_select;
st->task.post_select = signal_post_select;
register_task(&st->task);
}
+static struct list_head afs_client_list;
+
+struct afs_client {
+ struct list_head node;
+ int fd;
+ struct timeval connect_time;
+};
+
static void command_pre_select(struct sched *s, struct task *t)
{
struct command_task *ct = t->private_data;
- t->ret = 1;
+ struct afs_client *client;
+
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);
+ t->ret = 1;
}
/*
return ret;
}
-static void command_post_select(struct sched *s, struct task *t)
+static void execute_afs_command(int fd, uint32_t expected_cookie)
{
- struct command_task *ct = t->private_data;
- struct sockaddr_un unix_addr;
- char buf[sizeof(uint32_t) + sizeof(int)];
uint32_t cookie;
- int query_shmid, fd;
+ int query_shmid;
+ char buf[sizeof(cookie) + sizeof(query_shmid)];
+ int ret = recv_bin_buffer(fd, buf, sizeof(buf));
- t->ret = 1;
- if (!FD_ISSET(ct->fd, &s->rfds))
- return;
- t->ret = para_accept(ct->fd, &unix_addr, sizeof(unix_addr));
- if (t->ret < 0)
+ if (ret < 0) {
+ PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-ret));
return;
- /*
- * The following errors may be caused by a malicious local user. So do
- * not return an error in this case as this would terminate para_afs
- * and para_server.
- */
- fd = t->ret;
- /* FIXME: This is easily dosable (peer doesn't send data) */
- t->ret = recv_bin_buffer(fd, buf, sizeof(buf));
- if (t->ret < 0) {
- PARA_NOTICE_LOG("%s (%d)\n", PARA_STRERROR(-t->ret), t->ret);
- goto out;
}
- if (t->ret != sizeof(buf)) {
+ if (ret != sizeof(buf)) {
PARA_NOTICE_LOG("short read (%d bytes, expected %lu)\n",
- t->ret, (long unsigned) sizeof(buf));
- goto out;
+ ret, (long unsigned) sizeof(buf));
+ return;
}
cookie = *(uint32_t *)buf;
- if (cookie != ct->cookie) {
+ if (cookie != expected_cookie) {
PARA_NOTICE_LOG("received invalid cookie(got %u, expected %u)\n",
- (unsigned)cookie, (unsigned)ct->cookie);
- goto out;
+ (unsigned)cookie, (unsigned)expected_cookie);
+ return;
}
query_shmid = *(int *)(buf + sizeof(cookie));
if (query_shmid < 0) {
PARA_WARNING_LOG("received invalid query shmid %d)\n",
query_shmid);
- goto out;
+ return;
}
- /* Ignore return value: Errors might be ok here. */
+ /* Ignore return value: Errors might be OK here. */
call_callback(fd, query_shmid);
+}
+
+/** Shutdown connection if query has not arrived until this many seconds. */
+#define AFS_CLIENT_TIMEOUT 3
+
+static void command_post_select(struct sched *s, struct task *t)
+{
+ struct command_task *ct = t->private_data;
+ struct sockaddr_un unix_addr;
+ struct afs_client *client, *tmp;
+
+ /* First, 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);
+ else { /* prevent bogus connection flooding */
+ struct timeval diff;
+ tv_diff(now, &client->connect_time, &diff);
+ if (diff.tv_sec < AFS_CLIENT_TIMEOUT)
+ continue;
+ PARA_WARNING_LOG("connection timeout\n");
+ }
+ close(client->fd);
+ list_del(&client->node);
+ free(client);
+ }
+ /* Next, 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));
+ if (t->ret < 0) {
+ PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
+ goto out;
+ }
+ client = para_malloc(sizeof(*client));
+ client->fd = t->ret;
+ client->connect_time = *now;
+ para_list_add(&client->node, &afs_client_list);
out:
t->ret = 1;
- close(fd);
}
static void register_command_task(uint32_t cookie)
register_task(&ct->task);
}
-void register_tasks(uint32_t cookie)
+static void register_tasks(uint32_t cookie)
{
register_signal_task();
register_command_task(cookie);
}
-static char *database_dir;
-
-static int make_database_dir(void)
-{
- int ret;
-
- if (!database_dir) {
- if (conf.afs_database_dir_given)
- database_dir = para_strdup(conf.afs_database_dir_arg);
- else {
- char *home = para_homedir();
- database_dir = make_message(
- "%s/.paraslash/afs_database", home);
- free(home);
- }
- }
- PARA_INFO_LOG("afs_database dir %s\n", database_dir);
- ret = para_mkdir(database_dir, 0777);
- if (ret >= 0 || ret == -E_EXIST)
- return 1;
- free(database_dir);
- database_dir = NULL;
- return ret;
-}
-
-static int open_afs_tables(void)
-{
- int ret = make_database_dir();
-
- if (ret < 0)
- return ret;
- ret = attribute_init(&afs_tables[TBLNUM_ATTRIBUTES], database_dir);
- 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);
- return ret;
-}
-
-__noreturn int afs_init(uint32_t cookie, int socket_fd)
+/**
+ * Initialize the audio file selector process.
+ *
+ * \param cookie The value used for "authentication".
+ * \param socket_fd File descriptor used for communication with the server.
+ */
+__noreturn void afs_init(uint32_t cookie, int socket_fd)
{
enum play_mode current_play_mode;
struct sched s;
- int ret = open_afs_tables();
+ 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) {
PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
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 send_va_buffer(fd, "successfully created afs table(s)\n");
}
+/**
+ * Flags for the check command.
+ *
+ * \sa com_check().
+ */
enum com_check_flags {
+ /** Check the audio file table. */
CHECK_AFT = 1,
+ /** Check the mood table. */
CHECK_MOODS = 2,
+ /** Check the playlist table. */
CHECK_PLAYLISTS = 4
};
return ret;
}
}
+ if (flags & CHECK_MOODS) {
+ ret = send_callback_request(mood_check_callback, NULL, &result);
+ if (ret < 0)
+ return ret;
+ if (ret > 0) {
+ ret = send_buffer(fd, (char *) result.data);
+ free(result.data);
+ if (ret < 0)
+ return ret;
+ }
+ }
return 1;
}
projects / paraslash.git / blobdiff