151 lines
4.0 KiB
C++
151 lines
4.0 KiB
C++
/*
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* Copyright 2003-2019 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "Client.hxx"
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#include "Config.hxx"
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#include "Domain.hxx"
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#include "protocol/Result.hxx"
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#include "command/AllCommands.hxx"
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#include "Log.hxx"
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#include "util/StringAPI.hxx"
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#include "util/CharUtil.hxx"
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#define CLIENT_LIST_MODE_BEGIN "command_list_begin"
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#define CLIENT_LIST_OK_MODE_BEGIN "command_list_ok_begin"
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#define CLIENT_LIST_MODE_END "command_list_end"
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inline CommandResult
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Client::ProcessCommandList(bool list_ok,
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std::list<std::string> &&list) noexcept
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{
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CommandResult ret = CommandResult::OK;
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unsigned n = 0;
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for (auto &&i : list) {
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char *cmd = &*i.begin();
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FormatDebug(client_domain, "process command \"%s\"", cmd);
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ret = command_process(*this, n++, cmd);
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FormatDebug(client_domain, "command returned %i", int(ret));
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if (ret != CommandResult::OK || IsExpired())
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break;
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else if (list_ok)
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Write("list_OK\n");
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}
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return ret;
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}
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CommandResult
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Client::ProcessLine(char *line) noexcept
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{
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if (!IsLowerAlphaASCII(*line)) {
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/* all valid MPD commands begin with a lower case
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letter; this could be a badly routed HTTP
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request */
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FormatWarning(client_domain,
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"[%u] malformed command \"%s\"",
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num, line);
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return CommandResult::CLOSE;
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}
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if (StringIsEqual(line, "noidle")) {
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if (idle_waiting) {
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/* send empty idle response and leave idle mode */
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idle_waiting = false;
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command_success(*this);
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}
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/* do nothing if the client wasn't idling: the client
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has already received the full idle response from
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IdleNotify(), which he can now evaluate */
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return CommandResult::OK;
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} else if (idle_waiting) {
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/* during idle mode, clients must not send anything
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except "noidle" */
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FormatWarning(client_domain,
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"[%u] command \"%s\" during idle",
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num, line);
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return CommandResult::CLOSE;
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}
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if (cmd_list.IsActive()) {
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if (StringIsEqual(line, CLIENT_LIST_MODE_END)) {
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FormatDebug(client_domain,
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"[%u] process command list",
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num);
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auto &&list = cmd_list.Commit();
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auto ret = ProcessCommandList(cmd_list.IsOKMode(),
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std::move(list));
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FormatDebug(client_domain,
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"[%u] process command "
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"list returned %i", num, int(ret));
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if (ret == CommandResult::CLOSE ||
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IsExpired())
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return CommandResult::CLOSE;
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if (ret == CommandResult::OK)
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command_success(*this);
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cmd_list.Reset();
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return ret;
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} else {
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if (!cmd_list.Add(line)) {
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FormatWarning(client_domain,
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"[%u] command list size "
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"is larger than the max (%lu)",
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num,
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(unsigned long)client_max_command_list_size);
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return CommandResult::CLOSE;
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}
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return CommandResult::OK;
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}
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} else {
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if (StringIsEqual(line, CLIENT_LIST_MODE_BEGIN)) {
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cmd_list.Begin(false);
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return CommandResult::OK;
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} else if (StringIsEqual(line, CLIENT_LIST_OK_MODE_BEGIN)) {
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cmd_list.Begin(true);
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return CommandResult::OK;
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} else {
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FormatDebug(client_domain,
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"[%u] process command \"%s\"",
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num, line);
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auto ret = command_process(*this, 0, line);
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FormatDebug(client_domain,
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"[%u] command returned %i",
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num, int(ret));
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if (ret == CommandResult::CLOSE || IsExpired())
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return CommandResult::CLOSE;
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if (ret == CommandResult::OK)
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command_success(*this);
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return ret;
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}
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}
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}
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