-/*
- * Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file audiod_command.c Commands for para_audiod. */
#include <arpa/inet.h>
#include <sys/un.h>
#include <netdb.h>
+#include <lopsub.h>
+#include "audiod.lsg.h"
#include "para.h"
-#include "audiod.cmdline.h"
-#include "audiod.command_list.h"
+#include "lsu.h"
+#include "audiod_cmd.lsg.h"
#include "list.h"
#include "sched.h"
-#include "ggo.h"
#include "buffer_tree.h"
#include "filter.h"
#include "grab_client.h"
extern struct sched sched;
extern char *stat_item_values[NUM_STAT_ITEMS];
-typedef int audiod_command_handler_t(int, int, char **);
-static audiod_command_handler_t AUDIOD_COMMAND_HANDLERS;
-
-/* Defines one command of para_audiod. */
-struct audiod_command {
- const char *name;
- /* Pointer to the function that handles the command. */
- /*
- * Command handlers must never never close their file descriptor. A
- * positive return value tells audiod that the status items have
- * changed. In this case audiod will send an updated version of all
- * status items to to each connected stat client.
- */
- audiod_command_handler_t *handler;
- /* One-line description. */
- const char *description;
- /* Summary of the command line options. */
- const char *usage;
- /* The long help text. */
- const char *help;
-};
+/** The maximal number of simultaneous connections. */
+#define MAX_STAT_CLIENTS 50
-static struct audiod_command audiod_cmds[] = {DEFINE_AUDIOD_CMD_ARRAY};
+/** Pointer to a command handler function. */
+typedef int (*audiod_cmd_handler_t)(int, struct lls_parse_result *);
-/** Iterate over the array of all audiod commands. */
-#define FOR_EACH_COMMAND(c) for (c = 0; audiod_cmds[c].name; c++)
+/** The lopsub user_data pointer. Only the command handler at the moment. */
+struct audiod_command_info {
+ audiod_cmd_handler_t handler; /**< Implementation of the command. */
+};
-/** The maximal number of simultaneous connections. */
-#define MAX_STAT_CLIENTS 50
+/** Define the user_data pointer as expected by lopsub. */
+#define EXPORT_AUDIOD_CMD_HANDLER(_cmd) \
+ /** Implementation of _cmd. */ \
+ const struct audiod_command_info lsg_audiod_cmd_com_ ## _cmd ## _user_data = { \
+ .handler = com_ ## _cmd \
+ };
/** Flags used for the stat command of para_audiod. */
enum stat_client_flags {
static int num_clients;
/** The list of all status items used by para_{server,audiod,gui}. */
-const char *status_item_list[] = {STATUS_ITEM_ARRAY};
+const char *status_item_list[] = {STATUS_ITEMS};
static void dump_stat_client_list(void)
{
ret = dup(fd);
if (ret < 0)
return -ERRNO_TO_PARA_ERROR(errno);
- new_client = para_calloc(sizeof(*new_client));
+ new_client = zalloc(sizeof(*new_client));
new_client->fd = ret;
PARA_INFO_LOG("adding client on fd %d\n", new_client->fd);
new_client->item_mask = mask;
return para_strdup(status);
}
-static int dump_commands(int fd)
+static int com_help(int fd, struct lls_parse_result *lpr)
{
- char *buf = para_strdup(""), *tmp = NULL;
- int i;
- ssize_t ret;
+ char *buf;
+ int ret;
+ const struct lls_opt_result *r =
+ lls_opt_result(LSG_AUDIOD_CMD_HELP_OPT_LONG, lpr);
+ bool long_help = lls_opt_given(r);
- FOR_EACH_COMMAND(i) {
- tmp = make_message("%s%s\t%s\n", buf, audiod_cmds[i].name,
- audiod_cmds[i].description);
- free(buf);
- buf = tmp;
- }
+ lsu_com_help(long_help, lpr, audiod_cmd_suite, NULL, &buf, NULL);
ret = client_write(fd, buf);
free(buf);
- return ret;
+ return ret < 0? ret : 0;
}
+EXPORT_AUDIOD_CMD_HANDLER(help)
-static int com_help(int fd, int argc, char **argv)
+static int com_ll(int fd, struct lls_parse_result *lpr)
{
- int i, ret;
- char *buf;
-
- if (argc < 2) {
- ret = dump_commands(fd);
- goto out;
+ unsigned ll;
+ char *errctx;
+ const char *sev[] = {SEVERITIES};
+ const char *arg;
+ int ret = lls(lls_check_arg_count(lpr, 0, 1, &errctx));
+
+ if (ret < 0) {
+ char *tmp = make_message("%s\n", errctx);
+ free(errctx);
+ client_write(fd, tmp);
+ free(tmp);
+ return ret;
}
- FOR_EACH_COMMAND(i) {
- if (strcmp(audiod_cmds[i].name, argv[1]))
- continue;
- buf = make_message(
- "NAME\n\t%s -- %s\n"
- "SYNOPSIS\n\tpara_audioc %s\n"
- "DESCRIPTION\n%s\n",
- argv[1],
- audiod_cmds[i].description,
- audiod_cmds[i].usage,
- audiod_cmds[i].help
- );
- ret = client_write(fd, buf);
- free(buf);
- goto out;
+ if (lls_num_inputs(lpr) == 0) {
+ char *msg;
+ ll = daemon_get_loglevel();
+ msg = make_message("%s\n", sev[ll]);
+ ret = client_write(fd, msg);
+ free(msg);
+ return ret;
}
- ret = client_write(fd, "No such command. Available commands:\n");
- if (ret > 0)
- ret = dump_commands(fd);
-out:
- return ret < 0? ret : 0;
+ arg = lls_input(0, lpr);
+ for (ll = 0; ll < NUM_LOGLEVELS; ll++) {
+ if (!strcmp(arg, sev[ll]))
+ break;
+ }
+ if (ll >= NUM_LOGLEVELS)
+ return -ERRNO_TO_PARA_ERROR(EINVAL);
+ PARA_INFO_LOG("new log level: %s\n", sev[ll]);
+ daemon_set_loglevel(ll);
+ return 1;
}
+EXPORT_AUDIOD_CMD_HANDLER(ll)
-static int com_tasks(int fd, __a_unused int argc, __a_unused char **argv)
+static int com_tasks(int fd, __a_unused struct lls_parse_result *lpr)
{
+ int ret;
char *tl = get_task_list(&sched);
- int ret = 1;
- if (tl)
- ret = client_write(fd, tl);
+ if (!tl) /* no tasks registered yet */
+ return 0;
+ ret = client_write(fd, tl);
free(tl);
- return ret < 0? ret : 0;
+ return ret;
}
+EXPORT_AUDIOD_CMD_HANDLER(tasks)
-static int com_stat(int fd, int argc, char **argv)
+static int com_stat(int fd, struct lls_parse_result *lpr)
{
int i, ret, parser_friendly = 0;
uint64_t mask = 0;
const uint64_t one = 1;
struct para_buffer b = {.flags = 0};
+ const struct lls_opt_result *r;
+ unsigned num_inputs;
ret = mark_fd_nonblocking(fd);
if (ret < 0)
return ret;
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!strncmp(arg, "-p", 2)) {
- parser_friendly = 1;
- b.flags = PBF_SIZE_PREFIX;
- }
+ r = lls_opt_result(LSG_AUDIOD_CMD_STAT_OPT_PARSER_FRIENDLY, lpr);
+ if (lls_opt_given(r) > 0) {
+ parser_friendly = 1;
+ b.flags = PBF_SIZE_PREFIX;
}
- if (i >= argc)
+ num_inputs = lls_num_inputs(lpr);
+ if (num_inputs == 0)
mask--; /* set all bits */
- for (; i < argc; i++) {
- ret = stat_item_valid(argv[i]);
+ for (i = 0; i < num_inputs; i++) {
+ ret = stat_item_valid(lls_input(i, lpr));
if (ret < 0)
return ret;
mask |= (one << ret);
free(b.buf);
return ret < 0? ret : 0;
}
+EXPORT_AUDIOD_CMD_HANDLER(stat)
-static int com_grab(int fd, int argc, char **argv)
+static int com_grab(int fd, struct lls_parse_result *lpr)
{
- int ret = grab_client_new(fd, argc, argv, &sched);
+ int ret = grab_client_new(fd, lpr, &sched);
return ret < 0? ret : 0;
}
+EXPORT_AUDIOD_CMD_HANDLER(grab)
-static int com_term(__a_unused int fd, __a_unused int argc, __a_unused char **argv)
+static int com_term(__a_unused int fd, __a_unused struct lls_parse_result *lpr)
{
return -E_AUDIOD_TERM;
}
+EXPORT_AUDIOD_CMD_HANDLER(term)
-static int com_on(__a_unused int fd, __a_unused int argc, __a_unused char **argv)
+static int com_on(__a_unused int fd, __a_unused struct lls_parse_result *lpr)
{
audiod_status = AUDIOD_ON;
return 1;
}
+EXPORT_AUDIOD_CMD_HANDLER(on)
-static int com_off(__a_unused int fd, __a_unused int argc, __a_unused char **argv)
+static int com_off(__a_unused int fd, __a_unused struct lls_parse_result *lpr)
{
audiod_status = AUDIOD_OFF;
return 1;
}
+EXPORT_AUDIOD_CMD_HANDLER(off)
-static int com_sb(__a_unused int fd, __a_unused int argc, __a_unused char **argv)
+static int com_sb(__a_unused int fd, __a_unused struct lls_parse_result *lpr)
{
audiod_status = AUDIOD_STANDBY;
return 1;
}
+EXPORT_AUDIOD_CMD_HANDLER(sb)
-static int com_cycle(__a_unused int fd, int argc, char **argv)
+static int com_cycle(__a_unused int fd, __a_unused struct lls_parse_result *lpr)
{
switch (audiod_status) {
- case AUDIOD_ON:
- return com_sb(fd, argc, argv);
- break;
- case AUDIOD_OFF:
- return com_on(fd, argc, argv);
- break;
- case AUDIOD_STANDBY:
- return com_off(fd, argc, argv);
- break;
+ case AUDIOD_ON: audiod_status = AUDIOD_STANDBY; break;
+ case AUDIOD_OFF: audiod_status = AUDIOD_ON; break;
+ case AUDIOD_STANDBY: audiod_status = AUDIOD_OFF; break;
}
return 1;
}
+EXPORT_AUDIOD_CMD_HANDLER(cycle)
-static int com_version(int fd, int argc, char **argv)
+static int com_version(int fd, struct lls_parse_result *lpr)
{
int ret;
char *msg;
+ const struct lls_opt_result *r_v;
- if (argc > 1 && strcmp(argv[1], "-v") == 0)
+ r_v = lls_opt_result(LSG_AUDIOD_CMD_VERSION_OPT_VERBOSE, lpr);
+ if (lls_opt_given(r_v))
msg = make_message("%s", version_text("audiod"));
else
msg = make_message("%s\n", version_single_line("audiod"));
free(msg);
return ret < 0? ret : 0;
}
-
-static int check_perms(uid_t uid, uid_t *whitelist)
-{
- int i;
-
- if (!conf.user_allow_given)
- return 1;
- for (i = 0; i < conf.user_allow_given; i++)
- if (uid == whitelist[i])
- return 1;
- return -E_UCRED_PERM;
-}
+EXPORT_AUDIOD_CMD_HANDLER(version)
/**
* Handle arriving connections on the local socket.
*
* \param accept_fd The fd to accept connections on.
- * \param rfds If \a accept_fd is not set in \a rfds, do nothing.
- * \param uid_whitelist Array of UIDs which are allowed to connect.
*
- * This is called in each iteration of the select loop. If there is an incoming
- * connection on \a accept_fd, this function reads the command sent by the peer,
+ * This is called in each iteration of the main loop of the scheduler. If there
+ * is an incoming connection, the function reads the command sent by the peer,
* checks the connecting user's permissions by using unix socket credentials
* (if supported by the OS) and calls the corresponding command handler if
* permissions are OK.
* \return Positive on success, negative on errors, zero if there was no
* connection to accept.
*
- * \sa para_accept(), recv_cred_buffer()
- * */
-int handle_connect(int accept_fd, fd_set *rfds, uid_t *uid_whitelist)
+ * \sa \ref para_accept(), \ref recv_cred_buffer().
+ */
+int dispatch_local_connection(int accept_fd)
{
- int i, argc, ret, clifd;
+ int argc, ret, clifd;
char buf[MAXLINE], **argv = NULL;
struct sockaddr_un unix_addr;
uid_t uid;
+ const struct lls_command *cmd;
+ struct lls_parse_result *lpr;
+ char *errctx = NULL;
+ const struct audiod_command_info *aci;
- ret = para_accept(accept_fd, rfds, &unix_addr, sizeof(struct sockaddr_un), &clifd);
+ ret = para_accept(accept_fd, &unix_addr, sizeof(struct sockaddr_un), &clifd);
if (ret <= 0)
return ret;
ret = recv_cred_buffer(clifd, buf, sizeof(buf) - 1);
if (ret < 0)
goto out;
uid = ret;
- PARA_INFO_LOG("connection from user %i, buf: %s\n", ret, buf);
- ret = check_perms(uid, uid_whitelist);
- if (ret < 0)
+ PARA_INFO_LOG("connection from UID %d, buf: %s\n", ret, buf);
+ ret = -E_UCRED_PERM;
+ if (!uid_is_whitelisted(uid))
goto out;
ret = create_argv(buf, "\n", &argv);
if (ret <= 0)
goto out;
argc = ret;
- //PARA_INFO_LOG("argv[0]: %s, argc = %d\n", argv[0], argc);
- FOR_EACH_COMMAND(i) {
- if (strcmp(audiod_cmds[i].name, argv[0]))
- continue;
- ret = audiod_cmds[i].handler(clifd, argc, argv);
+ ret = lls(lls_lookup_subcmd(argv[0], audiod_cmd_suite, &errctx));
+ if (ret < 0)
goto out;
- }
- ret = -E_INVALID_AUDIOD_CMD;
+ cmd = lls_cmd(ret, audiod_cmd_suite);
+ ret = lls(lls_parse(argc, argv, cmd, &lpr, &errctx));
+ if (ret < 0)
+ goto out;
+ aci = lls_user_data(cmd);
+ ret = aci->handler(clifd, lpr);
+ lls_free_parse_result(lpr, cmd);
out:
free_argv(argv);
if (ret < 0 && ret != -E_CLIENT_WRITE) {
- char *tmp = make_message("%s\n", para_strerror(-ret));
+ char *tmp;
+ if (errctx) {
+ tmp = make_message("%s\n", errctx);
+ free(errctx);
+ client_write(clifd, tmp);
+ free(tmp);
+ }
+ tmp = make_message("%s\n", para_strerror(-ret));
client_write(clifd, tmp);
free(tmp);
}
{
char *old, *new;
- old = stat_item_values[SI_PLAY_TIME];
+ old = stat_item_values[SI_play_time];
new = get_time_string();
if (new) {
if (force || !old || strcmp(old, new)) {
free(old);
- stat_item_values[SI_PLAY_TIME] = new;
- stat_client_write_item(SI_PLAY_TIME);
+ stat_item_values[SI_play_time] = new;
+ stat_client_write_item(SI_play_time);
} else
free(new);
}
new = daemon_get_uptime_str(now);
- old = stat_item_values[SI_AUDIOD_UPTIME];
+ old = stat_item_values[SI_audiod_uptime];
if (force || !old || strcmp(old, new)) {
free(old);
- stat_item_values[SI_AUDIOD_UPTIME] = new;
- stat_client_write_item(SI_AUDIOD_UPTIME);
+ stat_item_values[SI_audiod_uptime] = new;
+ stat_client_write_item(SI_audiod_uptime);
} else
free(new);
- old = stat_item_values[SI_AUDIOD_STATUS];
+ old = stat_item_values[SI_audiod_status];
new = audiod_status_string();
if (force || !old || strcmp(old, new)) {
free(old);
- stat_item_values[SI_AUDIOD_STATUS] = new;
- stat_client_write_item(SI_AUDIOD_STATUS);
+ stat_item_values[SI_audiod_status] = new;
+ stat_client_write_item(SI_audiod_status);
} else
free(new);
- old = stat_item_values[SI_DECODER_FLAGS];
+ old = stat_item_values[SI_decoder_flags];
new = audiod_get_decoder_flags();
if (force || !old || strcmp(old, new)) {
free(old);
- stat_item_values[SI_DECODER_FLAGS] = new;
- stat_client_write_item(SI_DECODER_FLAGS);
+ stat_item_values[SI_decoder_flags] = new;
+ stat_client_write_item(SI_decoder_flags);
} else
free(new);
}