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;
+	}
+}