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/*
* Copyright (C) 2003-2012 The Music Player Daemon Project
* http://www.musicpd.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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "MessageCommands.hxx"
extern "C" {
#include "protocol/argparser.h"
#include "protocol/result.h"
#include "client_internal.h"
#include "client_subscribe.h"
}
#include <assert.h>
enum command_return
handle_subscribe(struct client *client, G_GNUC_UNUSED int argc, char *argv[])
{
assert(argc == 2);
switch (client_subscribe(client, argv[1])) {
case CLIENT_SUBSCRIBE_OK:
return COMMAND_RETURN_OK;
case CLIENT_SUBSCRIBE_INVALID:
command_error(client, ACK_ERROR_ARG,
"invalid channel name");
return COMMAND_RETURN_ERROR;
case CLIENT_SUBSCRIBE_ALREADY:
command_error(client, ACK_ERROR_EXIST,
"already subscribed to this channel");
return COMMAND_RETURN_ERROR;
case CLIENT_SUBSCRIBE_FULL:
command_error(client, ACK_ERROR_EXIST,
"subscription list is full");
return COMMAND_RETURN_ERROR;
}
/* unreachable */
return COMMAND_RETURN_OK;
}
enum command_return
handle_unsubscribe(struct client *client, G_GNUC_UNUSED int argc, char *argv[])
{
assert(argc == 2);
if (client_unsubscribe(client, argv[1]))
return COMMAND_RETURN_OK;
else {
command_error(client, ACK_ERROR_NO_EXIST,
"not subscribed to this channel");
return COMMAND_RETURN_ERROR;
}
}
struct channels_context {
GStringChunk *chunk;
GHashTable *channels;
};
static void
collect_channels(gpointer data, gpointer user_data)
{
struct channels_context *context =
(struct channels_context *)user_data;
const struct client *client = (const struct client *)data;
for (GSList *i = client->subscriptions; i != NULL;
i = g_slist_next(i)) {
const char *channel = (const char *)i->data;
if (g_hash_table_lookup(context->channels, channel) == NULL) {
char *channel2 = g_string_chunk_insert(context->chunk,
channel);
g_hash_table_insert(context->channels, channel2,
context);
}
}
}
static void
print_channel(gpointer key, G_GNUC_UNUSED gpointer value, gpointer user_data)
{
struct client *client = (struct client *)user_data;
const char *channel = (const char *)key;
client_printf(client, "channel: %s\n", channel);
}
enum command_return
handle_channels(struct client *client,
G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
{
assert(argc == 1);
struct channels_context context = {
g_string_chunk_new(1024),
g_hash_table_new(g_str_hash, g_str_equal),
};
client_list_foreach(collect_channels, &context);
g_hash_table_foreach(context.channels, print_channel, client);
g_hash_table_destroy(context.channels);
g_string_chunk_free(context.chunk);
return COMMAND_RETURN_OK;
}
enum command_return
handle_read_messages(struct client *client,
G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
{
assert(argc == 1);
GSList *messages = client_read_messages(client);
for (GSList *i = messages; i != NULL; i = g_slist_next(i)) {
struct client_message *msg = (struct client_message *)i->data;
client_printf(client, "channel: %s\nmessage: %s\n",
msg->channel, msg->message);
client_message_free(msg);
}
g_slist_free(messages);
return COMMAND_RETURN_OK;
}
struct send_message_context {
struct client_message msg;
bool sent;
};
static void
send_message(gpointer data, gpointer user_data)
{
struct send_message_context *context =
(struct send_message_context *)user_data;
struct client *client = (struct client *)data;
if (client_push_message(client, &context->msg))
context->sent = true;
}
enum command_return
handle_send_message(struct client *client,
G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[])
{
assert(argc == 3);
if (!client_message_valid_channel_name(argv[1])) {
command_error(client, ACK_ERROR_ARG,
"invalid channel name");
return COMMAND_RETURN_ERROR;
}
struct send_message_context context;
context.sent = false;
client_message_init(&context.msg, argv[1], argv[2]);
client_list_foreach(send_message, &context);
client_message_deinit(&context.msg);
if (context.sent)
return COMMAND_RETURN_OK;
else {
command_error(client, ACK_ERROR_NO_EXIST,
"nobody is subscribed to this channel");
return COMMAND_RETURN_ERROR;
}
}
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