136 lines
3.2 KiB
C++
136 lines
3.2 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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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 "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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unsigned n = 0;
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for (auto &&i : list) {
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char *cmd = &*i.begin();
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FmtDebug(client_domain, "process command \"{}\"", cmd);
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auto ret = command_process(*this, n++, cmd);
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FmtDebug(client_domain, "command returned {}", unsigned(ret));
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if (IsExpired())
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return CommandResult::CLOSE;
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else if (ret != CommandResult::OK)
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return ret;
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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 CommandResult::OK;
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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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assert(!background_command);
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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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FmtWarning(client_domain,
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"[{}] malformed command \"{}\"",
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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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WriteOK();
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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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FmtWarning(client_domain,
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"[{}] command \"{}\" 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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const unsigned id = num;
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FmtDebug(client_domain,
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"[{}] process command list",
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id);
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const bool ok_mode = cmd_list.IsOKMode();
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auto list = cmd_list.Commit();
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cmd_list.Reset();
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auto ret = ProcessCommandList(ok_mode,
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std::move(list));
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FmtDebug(client_domain,
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"[{}] process command "
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"list returned {}", id, unsigned(ret));
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if (ret == CommandResult::OK)
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WriteOK();
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return ret;
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} else {
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if (!cmd_list.Add(line)) {
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FmtWarning(client_domain,
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"[{}] command list size "
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"is larger than the max ({})",
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num, 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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const unsigned id = num;
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FmtDebug(client_domain,
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"[{}] process command \"{}\"",
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id, line);
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auto ret = command_process(*this, 0, line);
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FmtDebug(client_domain,
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"[{}] command returned {}",
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id, unsigned(ret));
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if (IsExpired())
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return CommandResult::CLOSE;
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if (ret == CommandResult::OK)
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WriteOK();
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return ret;
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}
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}
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}
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