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/*
* Copyright 2003-2018 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 "ClientInternal.hxx"
#include "protocol/Result.hxx"
#include "command/AllCommands.hxx"
#include "Log.hxx"
#include "util/StringAPI.hxx"
#include "util/CharUtil.hxx"
#define CLIENT_LIST_MODE_BEGIN "command_list_begin"
#define CLIENT_LIST_OK_MODE_BEGIN "command_list_ok_begin"
#define CLIENT_LIST_MODE_END "command_list_end"
static CommandResult
client_process_command_list(Client &client, bool list_ok,
std::list<std::string> &&list)
{
CommandResult ret = CommandResult::OK;
unsigned num = 0;
for (auto &&i : list) {
char *cmd = &*i.begin();
FormatDebug(client_domain, "process command \"%s\"", cmd);
ret = command_process(client, num++, cmd);
FormatDebug(client_domain, "command returned %i", int(ret));
if (ret != CommandResult::OK || client.IsExpired())
break;
else if (list_ok)
client.Write("list_OK\n");
}
return ret;
}
CommandResult
client_process_line(Client &client, char *line)
{
CommandResult ret;
if (StringIsEqual(line, "noidle")) {
if (client.idle_waiting) {
/* send empty idle response and leave idle mode */
client.idle_waiting = false;
command_success(client);
}
/* do nothing if the client wasn't idling: the client
has already received the full idle response from
client_idle_notify(), which he can now evaluate */
return CommandResult::OK;
} else if (client.idle_waiting) {
/* during idle mode, clients must not send anything
except "noidle" */
FormatWarning(client_domain,
"[%u] command \"%s\" during idle",
client.num, line);
return CommandResult::CLOSE;
}
if (client.cmd_list.IsActive()) {
if (StringIsEqual(line, CLIENT_LIST_MODE_END)) {
FormatDebug(client_domain,
"[%u] process command list",
client.num);
auto &&cmd_list = client.cmd_list.Commit();
ret = client_process_command_list(client,
client.cmd_list.IsOKMode(),
std::move(cmd_list));
FormatDebug(client_domain,
"[%u] process command "
"list returned %i", client.num, int(ret));
if (ret == CommandResult::CLOSE ||
client.IsExpired())
return CommandResult::CLOSE;
if (ret == CommandResult::OK)
command_success(client);
client.cmd_list.Reset();
} else {
if (!client.cmd_list.Add(line)) {
FormatWarning(client_domain,
"[%u] command list size "
"is larger than the max (%lu)",
client.num,
(unsigned long)client_max_command_list_size);
return CommandResult::CLOSE;
}
ret = CommandResult::OK;
}
} else {
if (StringIsEqual(line, CLIENT_LIST_MODE_BEGIN)) {
client.cmd_list.Begin(false);
ret = CommandResult::OK;
} else if (StringIsEqual(line, CLIENT_LIST_OK_MODE_BEGIN)) {
client.cmd_list.Begin(true);
ret = CommandResult::OK;
} else if (IsUpperAlphaASCII(*line)) {
/* no valid MPD command begins with an upper
case letter; this could be a badly routed
HTTP request */
FormatWarning(client_domain,
"[%u] malformed command \"%s\"",
client.num, line);
ret = CommandResult::CLOSE;
} else {
FormatDebug(client_domain,
"[%u] process command \"%s\"",
client.num, line);
ret = command_process(client, 0, line);
FormatDebug(client_domain,
"[%u] command returned %i",
client.num, int(ret));
if (ret == CommandResult::CLOSE ||
client.IsExpired())
return CommandResult::CLOSE;
if (ret == CommandResult::OK)
command_success(client);
}
}
return ret;
}
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