/*
- * Copyright (C) 2007-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file afs.c Paraslash's audio file selector. */
+#include <netinet/in.h>
+#include <sys/socket.h>
#include <regex.h>
#include <signal.h>
#include <fnmatch.h>
#include <osl.h>
+#include <arpa/inet.h>
+#include <sys/un.h>
+#include <netdb.h>
#include "server.cmdline.h"
#include "para.h"
#include "ipc.h"
#include "list.h"
#include "sched.h"
-#include "signal.h"
#include "fd.h"
+#include "signal.h"
#include "mood.h"
+#include "sideband.h"
+#include "command.h"
/** The osl tables used by afs. \sa blob.c. */
enum afs_table_num {
*/
uint32_t cookie;
/** The associated task structure. */
- struct task task;
+ struct task *task;
};
extern int mmd_mutex;
static int server_socket;
static struct command_task command_task_struct;
-static struct signal_task signal_task_struct;
+static struct signal_task *signal_task;
static enum play_mode current_play_mode;
-static char *current_mop; /* mode or playlist specifier. NULL means dummy mooe */
+static char *current_mop; /* mode or playlist specifier. NULL means dummy mood */
/**
* A random number used to "authenticate" the connection.
*
- * para_server picks this number by random before forking the afs process. The
- * command handlers write this number together with the id of the shared memory
- * area containing the query. This way, a malicious local user has to know this
- * number to be able to cause the afs process to crash by sending fake queries.
+ * 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.
*/
extern uint32_t afs_socket_cookie;
* area is written to the command socket.
*
* The afs process accepts connections on the command socket and reads the
- * shared memory id, attaches the corresponing area, calls the given handler to
+ * shared memory id, attaches the corresponding area, calls the given handler to
* perform the desired action and to optionally compute a result.
*
* The result and a \p callback_result structure is then written to another
*/
struct callback_query {
/** The function to be called. */
- callback_function *handler;
+ afs_callback *handler;
/** The number of bytes of the query */
size_t query_size;
};
/**
* Structure embedded in the result of a callback.
*
- * If the callback produced a result, an instance of that structure is embeeded
+ * If the callback produced a result, an instance of that structure is embedded
* into the shared memory area holding the result, mainly to let the command
* handler know the size of the result.
*
struct callback_result {
/** The number of bytes of the result. */
size_t result_size;
+ /** The band designator (loglevel for the result). */
+ uint8_t band;
};
static int dispatch_result(int result_shmid, callback_result_handler *handler,
{
struct osl_object result;
void *result_shm;
- int ret2, ret = shm_attach(result_shmid, ATTACH_RO, &result_shm);
+ /* must attach r/w as result.data might get encrypted in-place. */
+ int ret2, ret = shm_attach(result_shmid, ATTACH_RW, &result_shm);
struct callback_result *cr = result_shm;
if (ret < 0) {
}
result.size = cr->result_size;
result.data = result_shm + sizeof(*cr);
- if (result.size) {
- assert(handler);
- ret = handler(&result, private_result_data);
- if (ret < 0)
- PARA_NOTICE_LOG("result handler error: %s\n",
- para_strerror(-ret));
- }
+ assert(handler);
+ ret = handler(&result, cr->band, private_result_data);
ret2 = shm_detach(result_shm);
if (ret2 < 0) {
PARA_ERROR_LOG("detach failed: %s\n", para_strerror(-ret2));
* copied. It then notifies the afs process that the callback function \a f
* should be executed by sending the shared memory identifier (shmid) to the
* socket.
-
+ *
* If the callback produces a result, it sends any number of shared memory
* identifiers back via the socket. For each such identifier received, \a
* result_handler is called. The contents of the sma identified by the received
* shmid are passed to that function as an osl object. The private_result_data
* pointer is passed as the second argument to \a result_handler.
*
- * \return Standard.
+ * \return Number of shared memory areas dispatched on success, negative on errors.
*
* \sa send_option_arg_callback_request(), send_standard_callback_request().
*/
-int send_callback_request(callback_function *f, struct osl_object *query,
+int send_callback_request(afs_callback *f, struct osl_object *query,
callback_result_handler *result_handler,
void *private_result_data)
{
void *query_shm;
char buf[sizeof(afs_socket_cookie) + sizeof(int)];
size_t query_shm_size = sizeof(*cq);
- int dispatch_error = 0;
+ int dispatch_error = 0, num_dispatched = 0;
if (query)
query_shm_size += query->size;
if (ret < 0)
goto out;
- *(uint32_t *) buf = afs_socket_cookie;
- *(int *) (buf + sizeof(afs_socket_cookie)) = query_shmid;
+ *(uint32_t *)buf = afs_socket_cookie;
+ *(int *)(buf + sizeof(afs_socket_cookie)) = query_shmid;
ret = connect_local_socket(conf.afs_socket_arg);
if (ret < 0)
goto out;
fd = ret;
- ret = send_bin_buffer(fd, buf, sizeof(buf));
+ ret = write_all(fd, buf, sizeof(buf));
if (ret < 0)
goto out;
/*
ret = *(int *) buf;
assert(ret > 0);
result_shmid = ret;
- if (!dispatch_error) {
- ret = dispatch_result(result_shmid, result_handler,
- private_result_data);
- if (ret < 0)
- dispatch_error = 1;
- }
+ ret = dispatch_result(result_shmid, result_handler,
+ private_result_data);
+ if (ret < 0 && dispatch_error >= 0)
+ dispatch_error = ret;
ret = shm_destroy(result_shmid);
if (ret < 0)
PARA_CRIT_LOG("destroy result failed: %s\n",
para_strerror(-ret));
+ num_dispatched++;
}
out:
if (shm_destroy(query_shmid) < 0)
PARA_CRIT_LOG("shm destroy error\n");
if (fd >= 0)
close(fd);
-// PARA_DEBUG_LOG("callback_ret: %d\n", ret);
- return ret;
+ if (dispatch_error < 0)
+ return dispatch_error;
+ if (ret < 0)
+ return ret;
+ return num_dispatched;
}
/**
* \param result_handler See \ref send_callback_request.
* \param private_result_data See \ref send_callback_request.
*
- * Some commands have a couple of options that are parsed in child context for
- * syntactic correctness and are stored in a special options structure for that
- * command. This function allows to pass such a structure together with a list
- * of further arguments (often a list of audio files) to the parent process.
+ * Some command handlers pass command-specific options to a callback, together
+ * with a list of further arguments (often a list of audio files). This
+ * function allows to pass an arbitrary structure (given as an osl object) and
+ * a usual argument vector to the specified callback.
*
* \return The return value of the underlying call to \ref
* send_callback_request().
* \sa send_standard_callback_request(), send_callback_request().
*/
int send_option_arg_callback_request(struct osl_object *options,
- int argc, char * const * const argv, callback_function *f,
+ int argc, char * const * const argv, afs_callback *f,
callback_result_handler *result_handler,
void *private_result_data)
{
* send_option_arg_callback_request().
*/
int send_standard_callback_request(int argc, char * const * const argv,
- callback_function *f, callback_result_handler *result_handler,
+ afs_callback *f, callback_result_handler *result_handler,
void *private_result_data)
{
return send_option_arg_callback_request(NULL, argc, argv, f, result_handler,
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))
+ if (pmd->patterns.size == 0 &&
+ (pmd->pm_flags & PM_NO_PATTERN_MATCHES_EVERYTHING)) {
+ pmd->num_matches++;
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);
{
struct msghdr msg = {.msg_iov = NULL};
struct cmsghdr *cmsg;
- char control[255];
+ char control[255] __a_aligned(8);
int ret;
struct iovec iov;
}
/**
- * Open the audio file with highest score.
+ * Pass the fd of the next audio file to the server process.
*
* 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
*/
static int open_next_audio_file(void)
{
- 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);
+
+ ret = open_and_update_audio_file(&afd);
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) {
- 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;
no_admissible_files:
*(uint32_t *)buf = NO_ADMISSIBLE_FILES;
*(uint32_t *)(buf + 4) = (uint32_t)0;
- return send_bin_buffer(server_socket, buf, 8);
+ return write_all(server_socket, buf, 8);
}
/* Never fails if arg == NULL */
-static int activate_mood_or_playlist(char *arg, int *num_admissible)
+static int activate_mood_or_playlist(const char *arg, int *num_admissible)
{
enum play_mode mode;
int ret;
return 1;
}
-static void com_select_callback(int fd, const struct osl_object *query)
+/**
+ * Result handler for sending data to the para_client process.
+ *
+ * \param result The data to be sent.
+ * \param band The band designator.
+ * \param private Pointer to the command context.
+ *
+ * \return The return value of the underlying call to \ref command.c::send_sb.
+ *
+ * \sa \ref callback_result_handler, \ref command.c::send_sb.
+ */
+int afs_cb_result_handler(struct osl_object *result, uint8_t band,
+ void *private)
{
- struct para_buffer pb = {
- .max_size = shm_get_shmmax(),
- .private_data = &fd,
- .max_size_handler = pass_buffer_as_shm
- };
- char *arg = query->data;
- int num_admissible, ret, ret2;
+ struct command_context *cc = private;
+
+ assert(cc);
+ switch (band) {
+ case SBD_OUTPUT:
+ case SBD_DEBUG_LOG:
+ case SBD_INFO_LOG:
+ case SBD_NOTICE_LOG:
+ case SBD_WARNING_LOG:
+ case SBD_ERROR_LOG:
+ case SBD_CRIT_LOG:
+ case SBD_EMERG_LOG:
+ assert(result->size > 0);
+ return send_sb(&cc->scc, result->data, result->size, band, true);
+ case SBD_AFS_CB_FAILURE:
+ return *(int *)(result->data);
+ default:
+ return -E_BAD_BAND;
+ }
+}
+
+static void flush_and_free_pb(struct para_buffer *pb)
+{
+ int ret;
+ struct afs_max_size_handler_data *amshd = pb->private_data;
+
+ if (pb->buf && pb->size > 0) {
+ ret = pass_buffer_as_shm(amshd->fd, amshd->band, pb->buf,
+ pb->offset);
+ if (ret < 0)
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ }
+ free(pb->buf);
+}
+
+static int com_select_callback(struct afs_callback_arg *aca)
+{
+ const char *arg = aca->query.data;
+ int num_admissible, ret;
ret = clear_score_table();
if (ret < 0) {
- ret2 = para_printf(&pb, "%s\n", para_strerror(-ret));
- goto out;
+ para_printf(&aca->pbout, "could not clear score table: %s\n",
+ para_strerror(-ret));
+ 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) {
- ret2 = para_printf(&pb, "%s\nswitching back to %s\n",
- para_strerror(-ret), current_mop?
- current_mop : "dummy");
- ret = activate_mood_or_playlist(current_mop, &num_admissible);
- if (ret < 0) {
- if (ret2 >= 0)
- ret2 = para_printf(&pb, "failed, switching to dummy\n");
- activate_mood_or_playlist(NULL, &num_admissible);
- }
- } else
- ret2 = para_printf(&pb, "activated %s (%d admissible files)\n", current_mop?
- current_mop : "dummy mood", num_admissible);
+ if (ret >= 0)
+ goto out;
+ /* ignore subsequent errors (but log them) */
+ para_printf(&aca->pbout, "could not activate %s\n", arg);
+ if (current_mop) {
+ int ret2;
+ para_printf(&aca->pbout, "switching back to %s\n", current_mop);
+ ret2 = activate_mood_or_playlist(current_mop, &num_admissible);
+ if (ret2 >= 0)
+ goto out;
+ para_printf(&aca->pbout, "could not reactivate %s: %s\n",
+ current_mop, para_strerror(-ret2));
+ }
+ para_printf(&aca->pbout, "activating dummy mood\n");
+ activate_mood_or_playlist(NULL, &num_admissible);
out:
- if (ret2 >= 0 && pb.offset)
- pass_buffer_as_shm(pb.buf, pb.offset, &fd);
- free(pb.buf);
-}
-
-/**
- * Result handler for sending data to the para_client process.
- *
- * \param result The data to be sent.
- * \param private Pointer to the context.
- *
- * \return The return value of the underlying call to sc_send_bin_buffer().
- *
- * \sa \ref callback_result_handler, \ref sc_send_bin_buffer().
- */
-int sc_send_result(struct osl_object *result, void *private)
-{
- struct stream_cipher_context *scc = private;
-
- if (!result->size)
- return 1;
- return sc_send_bin_buffer(scc, result->data, result->size);
+ para_printf(&aca->pbout, "activated %s (%d admissible files)\n",
+ current_mop? current_mop : "dummy mood", num_admissible);
+ return ret;
}
-int com_select(struct stream_cipher_context *scc, int argc, char * const * const argv)
+int com_select(struct command_context *cc)
{
struct osl_object query;
- if (argc != 2)
+ if (cc->argc != 2)
return -E_AFS_SYNTAX;
- query.data = argv[1];
- query.size = strlen(argv[1]) + 1;
+ query.data = cc->argv[1];
+ query.size = strlen(cc->argv[1]) + 1;
return send_callback_request(com_select_callback, &query,
- &sc_send_result, scc);
+ &afs_cb_result_handler, cc);
}
static void init_admissible_files(char *arg)
{
int ret, socket_fd;
char *socket_name = conf.afs_socket_arg;
- struct sockaddr_un unix_addr;
unlink(socket_name);
- ret = create_local_socket(socket_name, &unix_addr,
- S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
+ ret = create_local_socket(socket_name, 0);
if (ret < 0) {
- PARA_EMERG_LOG("%s: %s\n", para_strerror(-ret), socket_name);
- exit(EXIT_FAILURE);
+ ret = create_local_socket(socket_name,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IROTH);
+ if (ret < 0) {
+ PARA_EMERG_LOG("%s: %s\n", para_strerror(-ret),
+ socket_name);
+ exit(EXIT_FAILURE);
+ }
}
socket_fd = ret;
- if (listen(socket_fd , 5) < 0) {
- PARA_EMERG_LOG("can not listen on socket\n");
- exit(EXIT_FAILURE);
- }
- 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,
socket_fd);
return socket_fd;
get_database_dir();
ret = para_mkdir(database_dir, 0777);
- if (ret >= 0 || is_errno(-ret, EEXIST))
+ if (ret >= 0 || ret == -ERRNO_TO_PARA_ERROR(EEXIST))
return 1;
return ret;
}
int i, ret;
get_database_dir();
- PARA_NOTICE_LOG("opening %u osl tables in %s\n", NUM_AFS_TABLES,
+ PARA_NOTICE_LOG("opening %d 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);
return ret;
}
-static void signal_pre_select(struct sched *s, struct task *t)
+static int afs_signal_post_select(struct sched *s, __a_unused void *context)
{
- struct signal_task *st = container_of(t, struct signal_task, task);
- para_fd_set(st->fd, &s->rfds, &s->max_fileno);
-}
-
-static void afs_signal_post_select(struct sched *s, struct task *t)
-{
- int signum;
+ int signum, ret;
if (getppid() == 1) {
PARA_EMERG_LOG("para_server died\n");
}
signum = para_next_signal(&s->rfds);
if (signum == 0)
- return;
+ return 0;
if (signum == SIGHUP) {
close_afs_tables();
parse_config_or_die(1);
- t->error = open_afs_tables();
- if (t->error < 0)
- return;
+ ret = open_afs_tables();
+ if (ret < 0)
+ return ret;
init_admissible_files(current_mop);
- return;
+ return 0;
}
PARA_EMERG_LOG("terminating on signal %d\n", signum);
shutdown:
- sched_shutdown();
- t->error = -E_AFS_SIGNAL;
+ task_notify_all(s, E_AFS_SIGNAL);
+ return -E_AFS_SIGNAL;
}
-static void register_signal_task(void)
+static void register_signal_task(struct sched *s)
{
- struct signal_task *st = &signal_task_struct;
-
para_sigaction(SIGPIPE, SIG_IGN);
- st->fd = para_signal_init();
- PARA_INFO_LOG("signal pipe: fd %d\n", st->fd);
+ signal_task = signal_init_or_die();
para_install_sighandler(SIGINT);
para_install_sighandler(SIGTERM);
para_install_sighandler(SIGHUP);
- st->task.pre_select = signal_pre_select;
- st->task.post_select = afs_signal_post_select;
- sprintf(st->task.status, "signal task");
- register_task(&st->task);
+ signal_task->task = task_register(&(struct task_info) {
+ .name = "signal",
+ .pre_select = signal_pre_select,
+ .post_select = afs_signal_post_select,
+ .context = signal_task,
+
+ }, s);
}
static struct list_head afs_client_list;
-/** Describes on connected afs client. */
+/** Describes one connected afs client. */
struct afs_client {
/** Position in the afs client list. */
struct list_head node;
struct timeval connect_time;
};
-static void command_pre_select(struct sched *s, struct task *t)
+static void command_pre_select(struct sched *s, void *context)
{
- struct command_task *ct = container_of(t, struct command_task, task);
+ struct command_task *ct = context;
struct afs_client *client;
para_fd_set(server_socket, &s->rfds, &s->max_fileno);
/**
* Send data as shared memory to a file descriptor.
*
+ * \param fd File descriptor to send the shmid to.
+ * \param band The band designator for this data.
* \param buf The buffer holding the data to be sent.
* \param size The size of \a buf.
- * \param fd_ptr A pointer to the file descriptor.
- *
- * This function is used as the \a max_size handler in a \ref para_buffer
- * structure. If used this way, it is called by \ref para_printf() whenever
- * the buffer passed to para_printf() is about to exceed its maximal size.
*
* This function creates a shared memory area large enough to hold
* the content given by \a buf and \a size and sends the identifier
- * of this area to the file descriptor given by \a fd_ptr.
+ * of this area to the file descriptor \a fd.
+ *
+ * It is called by the AFS max_size handler as well as directly by the AFS
+ * command callbacks to send command output to the command handlers.
*
* \return Zero if \a buf is \p NULL or \a size is zero. Negative on errors,
* and positive on success.
*/
-int pass_buffer_as_shm(char *buf, size_t size, void *fd_ptr)
+int pass_buffer_as_shm(int fd, uint8_t band, const char *buf, size_t size)
{
- int ret, shmid, fd = *(int *)fd_ptr;
+ int ret, shmid;
void *shm;
struct callback_result *cr;
- if (!buf || !size)
- return 0;
- ret = shm_new(size + sizeof(struct callback_result));
+ if (size == 0)
+ assert(band != SBD_OUTPUT);
+ ret = shm_new(size + sizeof(*cr));
if (ret < 0)
return ret;
shmid = ret;
goto err;
cr = shm;
cr->result_size = size;
- memcpy(shm + sizeof(*cr), buf, size);
+ cr->band = band;
+ if (size > 0)
+ memcpy(shm + sizeof(*cr), buf, size);
ret = shm_detach(shm);
if (ret < 0)
goto err;
- ret = send_bin_buffer(fd, (char *)&shmid, sizeof(int));
+ ret = write_all(fd, (char *)&shmid, sizeof(int));
if (ret >= 0)
return ret;
err:
return ret;
}
-/*
- * On errors, negative value is written to fd.
- * On success: If query produced a result, the result_shmid is written to fd.
- * Otherwise, zero is written.
- */
static int call_callback(int fd, int query_shmid)
{
void *query_shm;
struct callback_query *cq;
- struct osl_object query;
- int ret;
+ int ret, ret2;
+ struct afs_callback_arg aca = {.fd = fd};
ret = shm_attach(query_shmid, ATTACH_RW, &query_shm);
if (ret < 0)
return ret;
cq = query_shm;
- query.data = (char *)query_shm + sizeof(*cq);
- query.size = cq->query_size;
- cq->handler(fd, &query);
- return shm_detach(query_shm);
+ aca.query.data = (char *)query_shm + sizeof(*cq);
+ aca.query.size = cq->query_size;
+ aca.pbout.max_size = shm_get_shmmax();
+ aca.pbout.max_size_handler = afs_max_size_handler;
+ aca.pbout.private_data = &(struct afs_max_size_handler_data) {
+ .fd = fd,
+ .band = SBD_OUTPUT
+ };
+ ret = cq->handler(&aca);
+ ret2 = shm_detach(query_shm);
+ if (ret2 < 0) {
+ if (ret < 0) /* ignore (but log) detach error */
+ PARA_ERROR_LOG("could not detach sma: %s\n",
+ para_strerror(-ret2));
+ else
+ ret = ret2;
+ }
+ flush_and_free_pb(&aca.pbout);
+ if (ret < 0) {
+ ret2 = pass_buffer_as_shm(fd, SBD_AFS_CB_FAILURE,
+ (const char *)&ret, sizeof(ret));
+ if (ret2 < 0)
+ PARA_ERROR_LOG("could not pass cb failure packet: %s\n",
+ para_strerror(-ret));
+ }
+ return ret;
}
static int execute_server_command(fd_set *rfds)
/** 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)
+static int command_post_select(struct sched *s, void *context)
{
- struct command_task *ct = container_of(t, struct command_task, task);
+ struct command_task *ct = context;
struct sockaddr_un unix_addr;
struct afs_client *client, *tmp;
int fd, ret;
+ ret = task_get_notification(ct->task);
+ if (ret < 0)
+ return ret;
ret = execute_server_command(&s->rfds);
if (ret < 0) {
PARA_EMERG_LOG("%s\n", para_strerror(-ret));
- sched_shutdown();
- return;
+ task_notify_all(s, -ret);
+ return ret;
}
/* Check the list of connected clients. */
list_for_each_entry_safe(client, tmp, &afs_client_list, node) {
if (ret < 0)
PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
if (ret <= 0)
- return;
+ return 0;
ret = mark_fd_nonblocking(fd);
if (ret < 0) {
PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
close(fd);
- return;
+ return 0;
}
client = para_malloc(sizeof(*client));
client->fd = fd;
client->connect_time = *now;
para_list_add(&client->node, &afs_client_list);
+ return 0;
}
-static void register_command_task(uint32_t cookie)
+static void register_command_task(uint32_t cookie, struct sched *s)
{
struct command_task *ct = &command_task_struct;
ct->fd = setup_command_socket_or_die();
ct->cookie = cookie;
- ct->task.pre_select = command_pre_select;
- ct->task.post_select = command_post_select;
- sprintf(ct->task.status, "afs command task");
- register_task(&ct->task);
+ ct->task = task_register(&(struct task_info) {
+ .name = "afs command",
+ .pre_select = command_pre_select,
+ .post_select = command_post_select,
+ .context = ct,
+ }, s);
}
/**
static struct sched s;
int i, ret;
- register_signal_task();
+ register_signal_task(&s);
INIT_LIST_HEAD(&afs_client_list);
for (i = 0; i < NUM_AFS_TABLES; i++)
afs_tables[i].init(&afs_tables[i]);
PARA_INFO_LOG("server_socket: %d, afs_socket_cookie: %u\n",
server_socket, (unsigned) cookie);
init_admissible_files(conf.afs_initial_mode_arg);
- register_command_task(cookie);
+ register_command_task(cookie, &s);
s.default_timeout.tv_sec = 0;
s.default_timeout.tv_usec = 999 * 1000;
+ ret = write(socket_fd, "\0", 1);
+ if (ret != 1) {
+ if (ret == 0)
+ errno = EINVAL;
+ ret = -ERRNO_TO_PARA_ERROR(errno);
+ goto out_close;
+ }
ret = schedule(&s);
+ sched_shutdown(&s);
out_close:
close_afs_tables();
out:
exit(EXIT_FAILURE);
}
-static void create_tables_callback(int fd, const struct osl_object *query)
+static int com_init_callback(struct afs_callback_arg *aca)
{
- uint32_t table_mask = *(uint32_t *)query->data;
+ uint32_t table_mask = *(uint32_t *)aca->query.data;
int i, ret;
- struct para_buffer pb = {.buf = NULL};
close_afs_tables();
for (i = 0; i < NUM_AFS_TABLES; i++) {
if (!t->create)
continue;
ret = t->create(database_dir);
- if (ret < 0)
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot create table %s\n",
+ t->name);
goto out;
- para_printf(&pb, "successfully created %s table\n", t->name);
+ }
+ para_printf(&aca->pbout, "successfully created %s table\n",
+ t->name);
}
ret = open_afs_tables();
-out:
if (ret < 0)
- para_printf(&pb, "%s\n", para_strerror(-ret));
- if (pb.buf)
- pass_buffer_as_shm(pb.buf, pb.offset, &fd);
- free(pb.buf);
+ para_printf(&aca->pbout, "cannot open afs tables\n");
+out:
+ return ret;
}
-int com_init(struct stream_cipher_context *scc, int argc, char * const * const argv)
+int com_init(struct command_context *cc)
{
int i, j, ret;
uint32_t table_mask = (1 << (NUM_AFS_TABLES + 1)) - 1;
ret = make_database_dir();
if (ret < 0)
return ret;
- if (argc != 1) {
+ if (cc->argc != 1) {
table_mask = 0;
- for (i = 1; i < argc; i++) {
+ for (i = 1; i < cc->argc; i++) {
for (j = 0; j < NUM_AFS_TABLES; j++) {
struct afs_table *t = &afs_tables[j];
- if (strcmp(argv[i], t->name))
+ if (strcmp(cc->argv[i], t->name))
continue;
table_mask |= (1 << j);
break;
return -E_BAD_TABLE_NAME;
}
}
- ret = send_callback_request(create_tables_callback, &query,
- sc_send_result, scc);
- if (ret < 0)
- return sc_send_va_buffer(scc, "%s\n", para_strerror(-ret));
- return ret;
+ return send_callback_request(com_init_callback, &query,
+ afs_cb_result_handler, cc);
}
/**
/** Check the mood table. */
CHECK_MOODS = 2,
/** Check the playlist table. */
- CHECK_PLAYLISTS = 4
+ CHECK_PLAYLISTS = 4,
+ /** Check the attribute table against the audio file table. */
+ CHECK_ATTS = 8
};
-int com_check(struct stream_cipher_context *scc, int argc, char * const * const argv)
+int com_check(struct command_context *cc)
{
unsigned flags = 0;
int i, ret;
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
+ for (i = 1; i < cc->argc; i++) {
+ const char *arg = cc->argv[i];
if (arg[0] != '-')
break;
if (!strcmp(arg, "--")) {
flags |= CHECK_AFT;
continue;
}
+ if (!strcmp(arg, "-A")) {
+ flags |= CHECK_ATTS;
+ continue;
+ }
if (!strcmp(arg, "-p")) {
flags |= CHECK_PLAYLISTS;
continue;
}
return -E_AFS_SYNTAX;
}
- if (i < argc)
+ if (i < cc->argc)
return -E_AFS_SYNTAX;
if (!flags)
flags = ~0U;
if (flags & CHECK_AFT) {
ret = send_callback_request(aft_check_callback, NULL,
- sc_send_result, scc);
+ afs_cb_result_handler, cc);
+ if (ret < 0)
+ return ret;
+ }
+ if (flags & CHECK_ATTS) {
+ ret = send_callback_request(attribute_check_callback, NULL,
+ afs_cb_result_handler, cc);
if (ret < 0)
return ret;
}
if (flags & CHECK_PLAYLISTS) {
ret = send_callback_request(playlist_check_callback,
- NULL, sc_send_result, scc);
+ NULL, afs_cb_result_handler, cc);
if (ret < 0)
return ret;
}
if (flags & CHECK_MOODS) {
ret = send_callback_request(mood_check_callback, NULL,
- sc_send_result, scc);
+ afs_cb_result_handler, cc);
if (ret < 0)
return ret;
}
* \param pb May be \p NULL.
* \param data Type depends on \a event.
*
- * This function calls the table handlers of all tables and passes \a pb and \a
- * data verbatim. It's up to the handlers to interpret the \a data pointer.
+ * This function calls each table event handler, passing \a pb and \a data
+ * verbatim. It's up to the handlers to interpret the \a data pointer. If a
+ * handler returns negative, the loop is aborted.
+ *
+ * \return The (negative) error code of the first handler that failed, or non-negative
+ * if all handlers succeeded.
*/
-void afs_event(enum afs_events event, struct para_buffer *pb,
+__must_check int afs_event(enum afs_events event, struct para_buffer *pb,
void *data)
{
int i, ret;
if (!t->event_handler)
continue;
ret = t->event_handler(event, pb, data);
- if (ret < 0)
- PARA_CRIT_LOG("table %s, event %d: %s\n", t->name,
+ if (ret < 0) {
+ PARA_CRIT_LOG("table %s, event %u: %s\n", t->name,
event, para_strerror(-ret));
+ return ret;
+ }
}
+ return 1;
}
/**