diff options
Diffstat (limited to 'src/MessageCommands.cxx')
| -rw-r--r-- | src/MessageCommands.cxx | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/MessageCommands.cxx b/src/MessageCommands.cxx new file mode 100644 index 000000000..c5f4d79b0 --- /dev/null +++ b/src/MessageCommands.cxx @@ -0,0 +1,168 @@ +/* + * Copyright (C) 2003-2013 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" +#include "ClientSubscribe.hxx" +#include "ClientInternal.hxx" +#include "protocol/Result.hxx" +#include "protocol/ArgParser.hxx" + +#include <set> +#include <string> + +#include <assert.h> + +enum command_return +handle_subscribe(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(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 { + std::set<std::string> channels; +}; + +static void +collect_channels(gpointer data, gpointer user_data) +{ + struct channels_context *context = + (struct channels_context *)user_data; + const Client *client = (const Client *)data; + + context->channels.insert(client->subscriptions.begin(), + client->subscriptions.end()); +} + +enum command_return +handle_channels(Client *client, + G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) +{ + assert(argc == 1); + + struct channels_context context; + + client_list_foreach(collect_channels, &context); + + for (const auto &channel : context.channels) + client_printf(client, "channel: %s\n", channel.c_str()); + + return COMMAND_RETURN_OK; +} + +enum command_return +handle_read_messages(Client *client, + G_GNUC_UNUSED int argc, G_GNUC_UNUSED char *argv[]) +{ + assert(argc == 1); + + while (!client->messages.empty()) { + const ClientMessage &msg = client->messages.front(); + + client_printf(client, "channel: %s\nmessage: %s\n", + msg.GetChannel(), msg.GetMessage()); + client->messages.pop_front(); + } + + return COMMAND_RETURN_OK; +} + +struct send_message_context { + ClientMessage msg; + + bool sent; + + template<typename T, typename U> + send_message_context(T &&_channel, U &&_message) + :msg(std::forward<T>(_channel), std::forward<U>(_message)), + sent(false) {} +}; + +static void +send_message(gpointer data, gpointer user_data) +{ + struct send_message_context *context = + (struct send_message_context *)user_data; + Client *client = (Client *)data; + + if (client_push_message(client, context->msg)) + context->sent = true; +} + +enum command_return +handle_send_message(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(argv[1], argv[2]); + + client_list_foreach(send_message, &context); + + 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; + } +} |