-/*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- */
+#include "para.h"
+#include "error.h"
+#include <dirent.h> /* readdir() */
+#include <sys/mman.h>
+#include <sys/time.h>
-/** \file afs.c audio file sending functions
- *
- * This contains the audio sending part of para_server which is independent of
- * the current audio format, audio file selector and of the activated senders.
- */
-#include "server.h"
-#include <sys/time.h> /* gettimeofday */
-#include "server.cmdline.h"
-#include "db.h"
-#include "afh.h"
+#include "net.h"
#include "afs.h"
-#include "send.h"
-#include "error.h"
+#include "ipc.h"
#include "string.h"
-extern const char *status_item_list[];
+/** \file afs.c Paraslash's audio file selector. */
-static struct timeval announce_tv;
-static struct timeval data_send_barrier;
-static struct timeval eof_barrier;
-
-extern struct misc_meta_data *mmd;
-extern struct audio_file_selector selectors[];
-extern struct sender senders[];
-extern struct gengetopt_args_info conf;
+/**
+ * Compare two osl objects of string type.
+ *
+ * \param obj1 Pointer to the first object.
+ * \param obj2 Pointer to the second object.
+ *
+ * In any case, only \p MIN(obj1->size, obj2->size) characters of each string
+ * are taken into account.
+ *
+ * \return It returns an integer less than, equal to, or greater than zero if
+ * \a obj1 is found, respectively, to be less than, to match, or be greater than
+ * obj2.
+ *
+ * \sa strcmp(3), strncmp(3), osl_compare_func.
+ */
+int string_compare(const struct osl_object *obj1, const struct osl_object *obj2)
+{
+ const char *str1 = (const char *)obj1->data;
+ const char *str2 = (const char *)obj2->data;
+ return strncmp(str1, str2, PARA_MIN(obj1->size, obj2->size));
+}
-static FILE *audio_file = NULL;
+/** The osl tables used by afs. \sa blob.c */
+enum afs_table_num {
+ /** Contains audio file information. See aft.c. */
+ TBLNUM_AUDIO_FILES,
+ /** The table for the paraslash attributes. See attribute.c. */
+ TBLNUM_ATTRIBUTES,
+ /**
+ * Paraslash's scoring system is based on Gaussian normal
+ * distributions, and the relevant data is stored in the rbtrees of an
+ * osl table containing only volatile columns. See score.c for
+ * details.
+ */
+ TBLNUM_SCORES,
+ /**
+ * A standard blob table containing the mood definitions. For details
+ * see mood.c.
+ */
+ TBLNUM_MOODS,
+ /** A blob table containing lyrics on a per-song basis. */
+ TBLNUM_LYRICS,
+ /** Another blob table for images (for example album cover art). */
+ TBLNUM_IMAGES,
+ /** Yet another blob table for storing standard playlists. */
+ TBLNUM_PLAYLIST,
+ /** How many tables are in use? */
+ NUM_AFS_TABLES
+};
-#if 1
- void mp3_init(struct audio_format_handler *);
-#endif
+static struct table_info afs_tables[NUM_AFS_TABLES];
-#ifdef HAVE_OGGVORBIS
- void ogg_init(struct audio_format_handler *);
-#endif
-#ifdef HAVE_FAAD
- void aac_afh_init(struct audio_format_handler *);
-#endif
/**
- * the list of supported audio formats
+ * 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).
*/
-static struct audio_format_handler afl[] = {
-#if 1
- {
- .name = "mp3",
- .init = mp3_init,
- },
-#endif
-#ifdef HAVE_OGGVORBIS
- {
- .name = "ogg",
- .init = ogg_init,
- },
-#endif
-#ifdef HAVE_FAAD
- {
- .name = "aac",
- .init = aac_afh_init,
- },
-#endif
- {
- .name = NULL,
- }
-};
-#define FOR_EACH_AUDIO_FORMAT(i) for (i = 0; afl[i].name; i++)
+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;
+}
/**
- * check if audio file sender is playing
+ * Struct to let para_server call a function specified from child context.
*
- * \return greater than zero if playing, zero otherwise.
+ * Commands that need to change the state of para_server can't
+ * change the relevant data structures directly because commands
+ * are executed in a child process, i.e. they get their own
+ * virtual address space. This structure must be used to let
+ * para_server (i.e. the parent process) call a function specified
+ * by the child (the command handler).
*
+ * \sa fork(2), ipc.c.
*/
-unsigned int afs_playing(void)
-{
- return mmd->new_afs_status_flags & AFS_PLAYING;
-}
+struct callback_data {
+ /** The function to be called. */
+ callback_function *handler;
+ /** The sma for the parameters of the callback function. */
+ int query_shmid;
+ /** The size of the query sma. */
+ size_t query_size;
+ /** If the callback produced a result, it is stored in this sma. */
+ int result_shmid;
+ /** The size of the result sma. */
+ size_t result_size;
+ /** The return value of the callback function. */
+ int callback_ret;
+ /** The return value of the callback() procedure. */
+ int sma_ret;
+};
+
+static struct callback_data *shm_callback_data;
+static int callback_mutex;
+static int child_mutex;
+static int result_mutex;
/**
- * check if 'next' flag is set afs_status_flags
+ * Ask the parent process to call a given function.
+ *
+ * \param f The function to be called.
+ * \param query Pointer to arbitrary data for the callback.
+ * \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 parent process that \a f should be
+ * called ASAP. It provides proper locking via semaphores to protect against
+ * concurent access to the shared memory area and against concurrent access by
+ * another child process that asks to call the same function.
*
- * \return greater than zero if set, zero if not.
+ * \return Negative, if the shared memory area could not be set up. The return
+ * value of the callback function otherwise.
*
+ * \sa shm_new(), shm_attach(), shm_detach(), mutex_lock(), mutex_unlock(),
+ * shm_destroy(), struct callback_data, send_option_arg_callback_request(),
+ * send_standard_callback_request().
*/
-unsigned int afs_next(void)
+int send_callback_request(callback_function *f, struct osl_object *query,
+ struct osl_object *result)
{
- return mmd->new_afs_status_flags & AFS_NEXT;
+ struct callback_data cbd = {.handler = f};
+ int ret;
+ void *query_sma;
+
+ assert(query->data && query->size);
+ ret = shm_new(query->size);
+ if (ret < 0)
+ return ret;
+ cbd.query_shmid = ret;
+ cbd.query_size = query->size;
+ ret = shm_attach(cbd.query_shmid, ATTACH_RW, &query_sma);
+ if (ret < 0)
+ goto out;
+ memcpy(query_sma, query->data, query->size);
+ ret = shm_detach(query_sma);
+ if (ret < 0)
+ goto out;
+ /* prevent other children from interacting */
+ mutex_lock(child_mutex);
+ /* prevent parent from messing with shm_callback_data. */
+ mutex_lock(callback_mutex);
+ /* all three mutexes are locked, set parameters for callback */
+ *shm_callback_data = cbd;
+ /* unblock parent */
+ mutex_unlock(callback_mutex);
+ kill(getppid(), SIGUSR1); /* wake up parent */
+ /*
+ * At this time only the parent can run. It will execute our callback
+ * and unlock the result_mutex when ready to indicate that the child
+ * may use the result. So let's sleep on this mutex.
+ */
+ mutex_lock(result_mutex);
+ /* No need to aquire the callback mutex again */
+ ret = shm_callback_data->sma_ret;
+ if (ret < 0) /* sma problem, callback might not have been executed */
+ goto unlock_child_mutex;
+ if (shm_callback_data->result_shmid >= 0) { /* parent provided a result */
+ void *sma;
+ ret = shm_attach(shm_callback_data->result_shmid, ATTACH_RO,
+ &sma);
+ if (ret >= 0) {
+ if (result) { /* copy result */
+ result->size = shm_callback_data->result_size;
+ result->data = para_malloc(result->size);
+ memcpy(result->data, sma, result->size);
+ ret = shm_detach(sma);
+ if (ret < 0)
+ PARA_ERROR_LOG("can not detach result\n");
+ } else
+ PARA_WARNING_LOG("no result pointer\n");
+ } else
+ PARA_ERROR_LOG("attach result failed: %d\n", ret);
+ if (shm_destroy(shm_callback_data->result_shmid) < 0)
+ PARA_ERROR_LOG("destroy result failed\n");
+ } else { /* no result from callback */
+ if (result) {
+ PARA_WARNING_LOG("callback has no result\n");
+ result->data = NULL;
+ result->size = 0;
+ }
+ }
+ ret = shm_callback_data->callback_ret;
+unlock_child_mutex:
+ /* give other children a chance */
+ mutex_unlock(child_mutex);
+out:
+ if (shm_destroy(cbd.query_shmid) < 0)
+ PARA_ERROR_LOG("%s\n", "shm destroy error");
+ PARA_DEBUG_LOG("callback_ret: %d\n", ret);
+ return ret;
}
/**
- * check if a reposition request is pending
+ * Send a callback request passing an options structure and an argument vector.
*
- * \return greater than zero if true, zero otherwise.
+ * \param options pointer to an arbitrary data structure.
+ * \param argc Argument count.
+ * \param argv Standard argument vector.
+ * \param f The callback function.
+ * \param result The result of the query is stored here.
*
+ * 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.
+ *
+ * \sa send_standard_callback_request(), send_callback_request().
*/
-unsigned int afs_repos(void)
+int send_option_arg_callback_request(struct osl_object *options,
+ int argc, const char **argv, callback_function *f,
+ struct osl_object *result)
{
- return mmd->new_afs_status_flags & AFS_REPOS;
+ char *p;
+ int i, ret;
+ struct osl_object query = {.size = options? options->size : 0};
+
+ for (i = 0; i < argc; i++)
+ query.size += strlen(argv[i]) + 1;
+ query.data = para_malloc(query.size);
+ p = query.data;
+ if (options) {
+ memcpy(query.data, options->data, options->size);
+ p += options->size;
+ }
+ for (i = 0; i < argc; i++) {
+ strcpy(p, argv[i]); /* OK */
+ p += strlen(argv[i]) + 1;
+ }
+ ret = send_callback_request(f, &query, result);
+ free(query.data);
+ return ret;
}
/**
- * check if audio file sender is paused
+ * Send a callback request with an argument vector only.
+ *
+ * \param argc The same meaning as in send_option_arg_callback_request().
+ * \param argv The same meaning as in send_option_arg_callback_request().
+ * \param f The same meaning as in send_option_arg_callback_request().
+ * \param result The same meaning as in send_option_arg_callback_request().
*
- * \return greater than zero if paused, zero otherwise.
+ * This is similar to send_option_arg_callback_request(), but no options buffer
+ * is passed to the parent process.
*
+ * \return The return value of the underlying call to
+ * send_option_arg_callback_request().
*/
-unsigned int afs_paused(void)
+int send_standard_callback_request(int argc, const char **argv,
+ callback_function *f, struct osl_object *result)
{
- return !(mmd->new_afs_status_flags & AFS_NEXT)
- && !(mmd->new_afs_status_flags & AFS_PLAYING);
+ return send_option_arg_callback_request(NULL, argc, argv, f, result);
}
-/**
- * get the name of the given audio format
- * \param i the audio format number
- *
- * This returns a pointer to statically allocated memory so it
- * must not be freed by the caller.
+/*
+ * write input from fd to dynamically allocated char array,
+ * but maximal max_size byte. Return size.
*/
-const char *audio_format_name(int i)
+static int fd2buf(int fd, char **buf, int max_size)
{
- return i >= 0? afl[i].name : "(none)";
+ const size_t chunk_size = 1024;
+ size_t size = 2048;
+ char *p;
+ int ret;
+
+ *buf = para_malloc(size * sizeof(char));
+ p = *buf;
+ while ((ret = read(fd, p, chunk_size)) > 0) {
+ p += ret;
+ if ((p - *buf) + chunk_size >= size) {
+ char *tmp;
+
+ size *= 2;
+ if (size > max_size) {
+ ret = -E_INPUT_TOO_LARGE;
+ goto out;
+ }
+ tmp = para_realloc(*buf, size);
+ p = (p - *buf) + tmp;
+ *buf = tmp;
+ }
+ }
+ if (ret < 0) {
+ ret = -E_READ;
+ goto out;
+ }
+ ret = p - *buf;
+out:
+ if (ret < 0 && *buf)
+ free(*buf);
+ return ret;
}
/**
- * initialize the audio file sender
+ * Read from stdin, and send the result to the parent process.
*
- * Call the init functions of all supported audio format handlers and
- * initialize all supported senders.
+ * \param arg_obj Pointer to the arguments to \a f.
+ * \param f The callback function.
+ * \param max_len Don't read more than that many bytes from stdin.
+ * \param result The result of the query is stored here.
+ *
+ * This function is used by commands that wish to let para_server store
+ * arbitrary data specified by the user (for instance the add_blob family of
+ * commands). First, at most \a max_len bytes are read from stdin, the result
+ * is concatenated with the buffer given by \a arg_obj, and the combined buffer
+ * is made available to the parent process via shared memory.
+ *
+ * \return Negative on errors, the return value of the underlying call to
+ * send_callback_request() otherwise.
*/
-void afs_init(void)
+int stdin_command(struct osl_object *arg_obj, callback_function *f,
+ unsigned max_len, struct osl_object *result)
{
- int i;
- char *hn = para_hostname(), *home = para_homedir();
+ char *stdin_buf;
+ size_t stdin_len;
+ struct osl_object query;
+ int ret = fd2buf(STDIN_FILENO, &stdin_buf, max_len);
+
+ if (ret < 0)
+ return ret;
+ stdin_len = ret;
+ query.size = arg_obj->size + stdin_len;
+ query.data = para_malloc(query.size);
+ memcpy(query.data, arg_obj->data, arg_obj->size);
+ memcpy((char *)query.data + arg_obj->size, stdin_buf, stdin_len);
+ free(stdin_buf);
+ ret = send_callback_request(f, &query, result);
+ free(query.data);
+ return ret;
+}
- PARA_DEBUG_LOG("supported audio formats: %s\n",
- SUPPORTED_AUDIO_FORMATS);
- for (i = 0; afl[i].name; i++) {
- PARA_NOTICE_LOG("initializing %s handler\n",
- afl[i].name);
- afl[i].init(&afl[i]);
- }
- ms2tv(conf.announce_time_arg, &announce_tv);
- PARA_INFO_LOG("announce timeval: %lums\n", tv2ms(&announce_tv));
- for (i = 0; senders[i].name; i++) {
- PARA_NOTICE_LOG("initializing %s sender\n", senders[i].name);
- senders[i].init(&senders[i]);
- }
- free(hn);
- free(home);
+static void para_init_random_seed(void)
+{
+ struct timeval now;
+ unsigned int seed;
+
+ gettimeofday(&now, NULL);
+ seed = now.tv_usec;
+ srand(seed);
}
-static int get_file_info(int i)
+/**
+ * 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)
{
- return afl[i].get_file_info(audio_file, mmd->audio_file_info,
- &mmd->chunks_total, &mmd->seconds_total);
+ struct osl_row *aft_row;
+ 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;
+ }
}
/**
- * guess the audio format judging from filename
+ * Free all resources which were allocated by open_next_audio_file().
*
- * \param name the filename
+ * \param afd The structure previously filled in by open_next_audio_file().
*
- * \return This function returns -1 if it has no idea what kind of audio
- * file this might be. Otherwise the (non-negative) number of the audio format
- * is returned.
+ * \return The return value of the underlying call to para_munmap().
+ *
+ * \sa open_next_audio_file().
*/
-int guess_audio_format(const char *name)
+int close_audio_file(struct audio_file_data *afd)
{
- int i,j, len = strlen(name);
+ free(afd->afhi.chunk_table);
+ return para_munmap(afd->map.data, afd->map.size);
+}
- FOR_EACH_AUDIO_FORMAT(i) {
- for (j = 0; afl[i].suffixes[j]; j++) {
- const char *p = afl[i].suffixes[j];
- int plen = strlen(p);
- if (len < plen + 1)
- continue;
- if (name[len - plen - 1] != '.')
- continue;
- if (strcasecmp(name + len - plen, p))
- continue;
-// PARA_DEBUG_LOG("might be %s\n", audio_format_name(i));
- return i;
+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);
}
- return -1;
}
-static int get_audio_format(int omit)
+static enum play_mode init_admissible_files(void)
{
- int i;
-
- FOR_EACH_AUDIO_FORMAT(i) {
- if (i == omit || !afl[i].get_file_info)
- continue;
- rewind(audio_file);
- if (get_file_info(i) > 0)
- return i;
- rewind(audio_file);
+ 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;
+ }
}
- return -E_AUDIO_FORMAT;
+ 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 */
+ return PLAY_MODE_MOOD;
}
-/*
- * upddate shared mem
- */
-static int update_mmd(void)
-{
- int i;
- struct stat file_status;
-
- i = guess_audio_format(mmd->filename);
- if (i < 0 || get_file_info(i) < 0)
- i = get_audio_format(i);
- if (i < 0)
- return i;
- mmd->audio_format = i;
- mmd->chunks_sent = 0;
- mmd->current_chunk = 0;
- mmd->offset = 0;
- if (fstat(fileno(audio_file), &file_status) == -1)
- return -E_FSTAT;
- mmd->size = file_status.st_size;
- mmd->mtime = file_status.st_mtime;
- mmd->events++;
- PARA_NOTICE_LOG("next audio file: %s\n", mmd->filename);
+static int afs_init(void)
+{
+ int ret, shmid;
+ void *shm_area;
+ enum play_mode current_play_mode;
+
+ para_init_random_seed();
+
+ ret = attribute_init(&afs_tables[TBLNUM_ATTRIBUTES]);
+ PARA_DEBUG_LOG("ret %d\n", ret);
+ if (ret < 0)
+ return ret;
+ ret = moods_init(&afs_tables[TBLNUM_MOODS]);
+ if (ret < 0)
+ goto moods_init_error;
+ ret = playlists_init(&afs_tables[TBLNUM_PLAYLIST]);
+ if (ret < 0)
+ goto playlists_init_error;
+ ret = lyrics_init(&afs_tables[TBLNUM_LYRICS]);
+ if (ret < 0)
+ goto lyrics_init_error;
+ ret = images_init(&afs_tables[TBLNUM_IMAGES]);
+ if (ret < 0)
+ goto images_init_error;
+ ret = score_init(&afs_tables[TBLNUM_SCORES]);
+ if (ret < 0)
+ goto score_init_error;
+ ret = aft_init(&afs_tables[TBLNUM_AUDIO_FILES]);
+ if (ret < 0)
+ goto aft_init_error;
+
+ current_play_mode = init_admissible_files();
+ play_loop(current_play_mode);
+
+ ret = shm_new(sizeof(struct callback_data));
+ if (ret < 0)
+ return ret;
+ shmid = ret;
+ ret = shm_attach(shmid, ATTACH_RW, &shm_area);
+ if (ret < 0)
+ return ret;
+ shm_callback_data = shm_area;
+ ret = mutex_new();
+ if (ret < 0)
+ return ret;
+ callback_mutex = ret;
+ ret = mutex_new();
+ if (ret < 0)
+ return ret;
+ child_mutex = ret;
+ ret = mutex_new();
+ if (ret < 0)
+ return ret;
+ result_mutex = ret;
+ mutex_lock(result_mutex);
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;
}
-static void get_song(void)
+static uint32_t afs_socket_cookie;
+static int para_random(unsigned max)
{
- char **sl = selectors[mmd->selector_num].get_audio_file_list(10);
- int i;
+ return ((max + 0.0) * (rand() / (RAND_MAX + 1.0)));
+}
- if (!sl)
- goto err_out;
- for (i = 0; sl[i]; i++) {
- struct timeval now;
- PARA_INFO_LOG("trying %s\n", sl[i]);
- if (strlen(sl[i]) >= _POSIX_PATH_MAX)
- continue;
- audio_file = fopen(sl[i], "r");
- if (!audio_file)
- continue;
- strcpy(mmd->filename, sl[i]);
- if (update_mmd() < 0) {
- fclose(audio_file);
- audio_file = NULL;
- continue;
+int setup(void)
+{
+ int ret, afs_server_socket[2];
+
+ para_init_random_seed();
+ ret = socketpair(PF_UNIX, SOCK_DGRAM, 0, afs_server_socket);
+ if (ret < 0)
+ exit(EXIT_FAILURE);
+ afs_socket_cookie = para_random((uint32_t)-1);
+ ret = fork();
+ if (ret < 0)
+ exit(EXIT_FAILURE);
+ if (!ret) { /* child (afs) */
+ char *socket_name = "/tmp/afs_command_socket";
+ struct sockaddr_un unix_addr;
+ int fd;
+
+ unlink(socket_name);
+ ret = create_local_socket(socket_name, &unix_addr,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IWOTH);
+ if (ret < 0)
+ exit(EXIT_FAILURE);
+ fd = ret;
+ if (listen(fd , 5) < 0) {
+ PARA_EMERG_LOG("%s", "can not listen on socket\n");
+ exit(EXIT_FAILURE);
+ }
+ ret = afs_init();
+ if (ret < 0)
+ exit(EXIT_FAILURE);
+ PARA_NOTICE_LOG("accepting\n");
+ ret = para_accept(fd, &unix_addr, sizeof(struct sockaddr_un));
+ return ret;
+ }
+ ret = fork();
+ if (ret < 0)
+ exit(EXIT_FAILURE);
+ if (!ret) { /* child (handler) */
+ PARA_NOTICE_LOG("reading stdin\n");
+ for (;;) {
+ char buf[255];
+ read(0, buf, 255);
+ PARA_NOTICE_LOG("read: %s\n", buf);
}
- mmd->num_played++;
- if (selectors[mmd->selector_num].update_audio_file)
- selectors[mmd->selector_num].update_audio_file(sl[i]);
- PARA_DEBUG_LOG("%s", "success\n");
- mmd->new_afs_status_flags &= (~AFS_NEXT);
- gettimeofday(&now, NULL);
- tv_add(&now, &announce_tv, &data_send_barrier);
- goto free;
}
- PARA_ERROR_LOG("%s", "no valid files found\n");
-err_out:
- mmd->new_afs_status_flags = AFS_NEXT;
-free:
- if (sl) {
- for (i = 0; sl[i]; i++)
- free(sl[i]);
- free(sl);
+ for (;;) {
+ sleep(10);
+ PARA_NOTICE_LOG("sending next requerst\n");
}
}
-static int chk_barrier(const char *bname, const struct timeval *now,
- const struct timeval *barrier, struct timeval *diff, int log)
-{
- long ms;
-
- if (tv_diff(now, barrier, diff) > 0)
- return 1;
- ms = tv2ms(diff);
- if (log && ms)
- PARA_DEBUG_LOG("%s barrier: %lims left\n", bname, ms);
- return -1;
-}
-static void afs_next_chunk_time(struct timeval *due)
+static int create_all_tables(void)
{
- struct timeval tmp;
+ int i, ret;
+
+ for (i = 0; i < NUM_AFS_TABLES; i++) {
+ struct table_info *ti = afs_tables + i;
- tv_scale(mmd->chunks_sent, &afl[mmd->audio_format].chunk_tv, &tmp);
- tv_add(&tmp, &mmd->stream_start, due);
+ if (ti->flags & TBLFLAG_SKIP_CREATE)
+ continue;
+ ret = osl_create_table(ti->desc);
+ if (ret < 0)
+ return ret;
+ }
+ return 1;
}
-/*
- * != NULL: timeout for next chunk
- * NULL: nothing to do
- */
-static struct timeval *afs_compute_timeout(void)
+/* TODO load tables after init */
+static int com_init(__a_unused int fd, int argc, const char **argv)
{
- static struct timeval the_timeout;
- struct timeval now, next_chunk;
-
- if (afs_next() && mmd->audio_format >= 0) {
- /* only sleep a bit, nec*/
- the_timeout.tv_sec = 0;
- the_timeout.tv_usec = 100;
- return &the_timeout;
+ int i, j, ret;
+ if (argc == 1)
+ return create_all_tables();
+ for (i = 1; i < argc; i++) {
+ for (j = 0; j < NUM_AFS_TABLES; j++) {
+ struct table_info *ti = afs_tables + j;
+
+ if (ti->flags & TBLFLAG_SKIP_CREATE)
+ continue;
+ if (strcmp(argv[i], ti->desc->name))
+ continue;
+ PARA_NOTICE_LOG("creating table %s\n", argv[i]);
+ ret = osl_create_table(ti->desc);
+ if (ret < 0)
+ return ret;
+ break;
+ }
+ if (j == NUM_AFS_TABLES)
+ return -E_BAD_TABLE_NAME;
}
- gettimeofday(&now, NULL);
- if (chk_barrier("eof", &now, &eof_barrier, &the_timeout, 1) < 0)
- return &the_timeout;
- if (chk_barrier("data send", &now, &data_send_barrier,
- &the_timeout, 1) < 0)
- return &the_timeout;
- if (mmd->audio_format < 0 || !afs_playing() || !audio_file)
- return NULL;
- afs_next_chunk_time(&next_chunk);
- if (chk_barrier(afl[mmd->audio_format].name, &now, &next_chunk,
- &the_timeout, 0) < 0)
- return &the_timeout;
- /* chunk is due or bof */
- the_timeout.tv_sec = 0;
- the_timeout.tv_usec = 0;
- return &the_timeout;
+ return 1;
}
+/** Describes a command of para_server. */
+struct command {
+ /** The name of the command. */
+ const char *name;
+ /** The handler function. */
+ int (*handler)(int fd, int argc, const char **argv);
+};
-static void afs_eof(struct audio_format_handler *af)
+static struct command cmd[] = {
{
- struct timeval now;
- int i;
- char *tmp;
+ .name = "add",
+ .handler = com_add,
+},
+{
+ .name = "addlyr",
+ .handler = com_addlyr,
+},
+{
+ .name = "addimg",
+ .handler = com_addimg,
+},
+{
+ .name = "addmood",
+ .handler = com_addmood,
+},
+{
+ .name = "addpl",
+ .handler = com_addpl,
+},
+{
+ .name = "catlyr",
+ .handler = com_catlyr,
+},
+{
+ .name = "catimg",
+ .handler = com_catimg,
+},
+{
+ .name = "mvimg",
+ .handler = com_mvimg,
+},
+{
+ .name = "mvlyr",
+ .handler = com_mvlyr,
+},
+{
+ .name = "mvmood",
+ .handler = com_mvmood,
+},
+{
+ .name = "mvpl",
+ .handler = com_mvpl,
+},
+{
+ .name = "catmood",
+ .handler = com_catmood,
+},
+{
+ .name = "catpl",
+ .handler = com_catpl,
+},
+{
+ .name = "rmatt",
+ .handler = com_rmatt,
+},
+{
+ .name = "init",
+ .handler = com_init,
+},
+{
+ .name = "lsatt",
+ .handler = com_lsatt,
+},
+{
+ .name = "ls",
+ .handler = com_afs_ls,
+},
+{
+ .name = "lslyr",
+ .handler = com_lslyr,
+},
+{
+ .name = "lsimg",
+ .handler = com_lsimg,
+},
+{
+ .name = "lsmood",
+ .handler = com_lsmood,
+},
+{
+ .name = "lspl",
+ .handler = com_lspl,
+},
+{
+ .name = "setatt",
+ .handler = com_setatt,
+},
+{
+ .name = "addatt",
+ .handler = com_addatt,
+},
+{
+ .name = "rm",
+ .handler = com_afs_rm,
+},
+{
+ .name = "rmlyr",
+ .handler = com_rmlyr,
+},
+{
+ .name = "rmimg",
+ .handler = com_rmimg,
+},
+{
+ .name = "rmmood",
+ .handler = com_rmmood,
+},
+{
+ .name = "rmpl",
+ .handler = com_rmpl,
+},
+{
+ .name = "touch",
+ .handler = com_touch,
+},
+{
+ .name = NULL,
+}
+};
- if (!af || !audio_file) {
- for (i = 0; senders[i].name; i++)
- senders[i].shutdown_clients();
- return;
+static void call_callback(void)
+{
+ struct osl_object query, result = {.data = NULL};
+ int ret, ret2;
+
+ shm_callback_data->result_shmid = -1; /* no result */
+ ret = shm_attach(shm_callback_data->query_shmid, ATTACH_RW,
+ &query.data);
+ if (ret < 0)
+ goto out;
+ query.size = shm_callback_data->query_size;
+ shm_callback_data->callback_ret = shm_callback_data->handler(&query,
+ &result);
+ if (result.data && result.size) {
+ void *sma;
+ ret = shm_new(result.size);
+ if (ret < 0)
+ goto detach_query;
+ shm_callback_data->result_shmid = ret;
+ shm_callback_data->result_size = result.size;
+ ret = shm_attach(shm_callback_data->result_shmid, ATTACH_RW, &sma);
+ if (ret < 0)
+ goto destroy_result;
+ memcpy(sma, result.data, result.size);
+ ret = shm_detach(sma);
+ if (ret < 0) {
+ PARA_ERROR_LOG("detach result failed\n");
+ goto destroy_result;
+ }
}
- gettimeofday(&now, NULL);
- tv_add(&af->eof_tv, &now, &eof_barrier);
- af->close_audio_file();
- audio_file = NULL;
- mmd->audio_format = -1;
- af = NULL;
- mmd->chunks_sent = 0;
- mmd->offset = 0;
- mmd->seconds_total = 0;
- tmp = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_AUDIO_INFO1],
- status_item_list[SI_AUDIO_INFO2], status_item_list[SI_AUDIO_INFO3]);
- strcpy(mmd->audio_file_info, tmp);
- free(tmp);
- tmp = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_DBINFO1],
- status_item_list[SI_DBINFO2], status_item_list[SI_DBINFO3]);
- strcpy(mmd->selector_info, tmp);
- free(tmp);
- mmd->filename[0] = '\0';
- mmd->size = 0;
- mmd->events++;
+ ret = 1;
+ goto detach_query;
+destroy_result:
+ if (shm_destroy(shm_callback_data->result_shmid) < 0)
+ PARA_ERROR_LOG("destroy result failed\n");
+ shm_callback_data->result_shmid = -1;
+detach_query:
+ free(result.data);
+ ret2 = shm_detach(query.data);
+ if (ret2 < 0) {
+ PARA_ERROR_LOG("detach query failed\n");
+ if (ret >= 0)
+ ret = ret2;
+ }
+out:
+ if (ret < 0)
+ PARA_ERROR_LOG("sma error %d\n", ret);
+ shm_callback_data->sma_ret = ret;
+ shm_callback_data->handler = NULL;
+ mutex_unlock(result_mutex); /* wake up child */
}
-/**
- * get the header and of the current audio file
- *
- * \param header_len the length of the header is stored here
- *
- * \return a pointer to a buffer containing the header, or NULL, if no audio
- * file is selected or if the current audio format does not need special header
- * treamtment.
- *
- */
-char *afs_get_header(int *header_len)
-{
- *header_len = 0;
- if (mmd->audio_format < 0)
- return NULL;
- if (!afl[mmd->audio_format].get_header_info)
- return NULL;
- return afl[mmd->audio_format].get_header_info(header_len);
-}
-const char *supported_audio_formats(void)
+static void dummy(__a_unused int s)
+{}
+
+static void afs_shutdown(enum osl_close_flags flags)
{
- return SUPPORTED_AUDIO_FORMATS;
+ 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);
}
-/**
- * get the chunk time of the current audio file
- *
- * \return a pointer to a struct containing the chunk time, or NULL,
- * if currently no audio file is selected.
- */
-struct timeval *afs_chunk_time(void)
+static int got_sigchld;
+static void sigchld_handler(__a_unused int s)
{
- if (mmd->audio_format < 0)
- return NULL;
- return &afl[mmd->audio_format].chunk_tv;
+ got_sigchld = 1;
}
-/**
- * compute the timeout for para_server's main select-loop
- *
- * This function gets called from para_server to determine the timeout value
- * for its main select loop.
- *
- * Before the timeout is computed, the current afs status flags are evaluated
- * and acted upon by calling appropriate functions from the lower layers.
- * Possible actions include
- *
- * - request a new file list from the current audio file selector
- * - shutdown of all senders (stop/pause command)
- * - reposition the stream (ff/jmp command)
- *
- * \return A pointer to a struct timeval containing the timeout for the next
- * chunk of data to be sent, or NULL if we're not sending right now.
- */
-struct timeval *afs_preselect(void)
-{
- struct audio_format_handler *af = NULL;
- int i, format;
- struct timeval *ret;
-again:
- format = mmd->audio_format;
- if (format >= 0)
- af = afl + format;
- else
- for (i = 0; senders[i].name; i++)
- senders[i].shutdown_clients();
- if (afs_next() && af) {
- afs_eof(af);
- return afs_compute_timeout();
- }
- if (afs_paused() || afs_repos()) {
- for (i = 0; senders[i].name; i++)
- senders[i].shutdown_clients();
- if (af) {
- struct timeval now;
- gettimeofday(&now, NULL);
- if (!afs_paused() || mmd->chunks_sent)
- tv_add(&af->eof_tv, &now, &eof_barrier);
- if (afs_repos())
- tv_add(&now, &announce_tv, &data_send_barrier);
- if (mmd->new_afs_status_flags & AFS_NOMORE)
- mmd->new_afs_status_flags = AFS_NEXT;
- }
- mmd->chunks_sent = 0;
- }
- if (af && afs_repos() && mmd->current_chunk != mmd->repos_request)
- af->reposition_stream(mmd->repos_request);
- if (afs_repos()) {
- mmd->new_afs_status_flags &= ~(AFS_REPOS);
- mmd->current_chunk = mmd->repos_request;
- }
- ret = afs_compute_timeout();
- if (!ret && !audio_file && afs_playing() &&
- !(mmd->new_afs_status_flags & AFS_NOMORE)) {
- PARA_DEBUG_LOG("%s", "ready and playing, but no audio file\n");
- get_song();
- goto again;
+static void server_loop(int child_pid)
+{
+// int status;
+
+ PARA_DEBUG_LOG("server pid: %d, child pid: %d\n",
+ getpid(), child_pid);
+ for (;;) {
+ mutex_lock(callback_mutex);
+ if (shm_callback_data->handler)
+ call_callback();
+ mutex_unlock(callback_mutex);
+ usleep(100);
+ if (!got_sigchld)
+ continue;
+ mutex_destroy(result_mutex);
+ mutex_destroy(callback_mutex);
+ mutex_destroy(child_mutex);
+ afs_shutdown(OSL_MARK_CLEAN);
+ exit(EXIT_SUCCESS);
}
- return ret;
}
-/**
- * afs_send_chunk - paraslash's main sending function
- *
- * This function gets called from para_server as soon as the next chunk of
- * data should be pushed out. It first calls the read_chunk() function of
- * the current audio format handler to obtain a pointer to the data to be
- * sent out as well as its length. This information is then passed to each
- * supported sender's send() function which does the actual sending.
- *
- * Return value: Positive return value on success, zero on eof and negative
- * on errors.
- */
-
-void afs_send_chunk(void)
+#if 0
+int main(int argc, const char **argv)
{
- int i;
- struct audio_format_handler *af;
- char *buf;
- ssize_t ret;
- struct timeval now, due;
-
- if (mmd->audio_format < 0 || !audio_file || !afs_playing())
- return;
- af = &afl[mmd->audio_format];
- gettimeofday(&now, NULL);
- afs_next_chunk_time(&due);
- if (tv_diff(&due, &now, NULL) > 0)
- return;
- if (chk_barrier("eof", &now, &eof_barrier, &due, 1) < 0)
- return;
- if (chk_barrier("data send", &now, &data_send_barrier,
- &due, 1) < 0)
- return;
- buf = af->read_chunk(mmd->current_chunk, &ret);
- mmd->new_afs_status_flags &= ~AFS_REPOS;
- if (!buf) {
- if (ret < 0)
- mmd->new_afs_status_flags = AFS_NEXT;
- else
- mmd->new_afs_status_flags |= AFS_NEXT;
- afs_eof(af);
- return;
+ int i, ret = -E_AFS_SYNTAX;
+
+ signal(SIGUSR1, dummy);
+ signal(SIGCHLD, sigchld_handler);
+ if (argc < 2)
+ goto out;
+ ret = setup();
+// ret = afs_init();
+ if (ret < 0) {
+ PARA_EMERG_LOG("afs_init returned %d\n", ret);
+ exit(EXIT_FAILURE);
}
- if (!mmd->chunks_sent) {
- struct timeval tmp;
- gettimeofday(&mmd->stream_start, NULL);
- tv_scale(mmd->current_chunk, &af->chunk_tv, &tmp);
- mmd->offset = tv2ms(&tmp);
- mmd->events++;
+ ret = fork();
+ if (ret < 0) {
+ ret = -E_FORK;
+ goto out;
}
- for (i = 0; senders[i].name; i++)
- senders[i].send(mmd->current_chunk, mmd->chunks_sent, buf, ret);
- mmd->new_afs_status_flags |= AFS_PLAYING;
- mmd->chunks_sent++;
- mmd->current_chunk++;
+ if (ret)
+ server_loop(ret);
+ for (i = 0; cmd[i].name; i++) {
+ if (strcmp(cmd[i].name, argv[1]))
+ continue;
+ ret = cmd[i].handler(1, argc - 1 , argv + 1);
+ goto out;
+
+ }
+ PARA_ERROR_LOG("unknown command: %s\n", argv[1]);
+ ret = -1;
+out:
+ if (ret < 0)
+ PARA_ERROR_LOG("error %d\n", ret);
+ else
+ PARA_DEBUG_LOG("%s", "success\n");
+ afs_shutdown(0);
+ return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
}
+#endif