/** \file afs.c Paraslash's audio file selector. */
+#include <signal.h>
#include <fnmatch.h>
#include "server.cmdline.h"
#include "para.h"
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 = change_current_mood(given_mood);
+ if (conf.mood_given) {
+ ret = change_current_mood(conf.mood_arg);
if (ret >= 0) {
- if (given_playlist)
+ if (conf.playlist_given)
PARA_WARNING_LOG("ignoring playlist %s\n",
- given_playlist);
+ conf.playlist_arg);
return PLAY_MODE_MOOD;
}
}
- if (given_playlist) {
- ret = playlist_open(given_playlist);
+ if (conf.playlist_given) {
+ ret = playlist_open(conf.playlist_arg);
if (ret >= 0)
return PLAY_MODE_PLAYLIST;
}
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. */
call_callback(fd, query_shmid);
+}
+
+#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 flodding */
+ 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)
{
enum play_mode current_play_mode;
struct sched s;
- int ret = open_afs_tables();
+ int ret;
+
+ INIT_LIST_HEAD(&afs_client_list);
+ ret = open_afs_tables();
if (ret < 0) {
PARA_EMERG_LOG("%s\n", PARA_STRERROR(-ret));
projects / paraslash.git / blobdiff