Teaspeak-Server/server/src/terminal/CommandHandler.cpp
2019-11-22 20:51:00 +01:00

523 lines
20 KiB
C++

#include <csignal>
#include <src/SignalHandler.h>
#include <src/TSServer.h>
#include <src/client/ConnectedClient.h>
#include <src/ServerManager.h>
#include <src/InstanceHandler.h>
#include <log/LogUtils.h>
#include <src/ShutdownHelper.h>
#include <misc/time.h>
#include <misc/memtracker.h>
#include <sql/sqlite/SqliteSQL.h>
#include <sys/resource.h>
#include "CommandHandler.h"
#include "src/server/QueryServer.h"
#ifdef HAVE_JEMALLOC
#include <jemalloc/jemalloc.h>
#endif
using namespace std;
using namespace std::chrono;
using namespace ts;
using namespace ts::server;
extern ts::server::InstanceHandler* serverInstance;
//Keep this log message displayed
#define logError(...) logErrorFmt(true, 0, ##__VA_ARGS__)
#define logMessage(...) logMessageFmt(true, 0, ##__VA_ARGS__)
#define _STRINGIFY(x) #x
#define STRINGIFY(x) _STRINGIFY(x)
namespace terminal {
namespace chandler {
void handleCommand(std::string str){
TerminalCommand cmd{};
size_t index = 0;
do {
size_t next = str.find(' ', index);
auto elm = str.substr(index, next - index);
debugMessage("Having message part: " + elm + " - " + to_string(index));
if(index == 0){
cmd.command = elm;
std::transform(elm.begin(), elm.end(), elm.begin(), ::tolower);
cmd.lcommand = elm;
} else {
cmd.arguments.emplace_back("", elm);
std::transform(elm.begin(), elm.end(), elm.begin(), ::tolower);
cmd.larguments.push_back(elm);
}
index = next + 1; //if no next than next = ~0 and if we add 1 then next is 0
} while(index != 0);
if(cmd.lcommand == "help")
handleCommandHelp(cmd);
else if(cmd.lcommand == "end" || cmd.lcommand == "shutdown")
handleCommandEnd(cmd);
else if(cmd.lcommand == "info")
handleCommandInfo(cmd);
else if(cmd.lcommand == "chat")
handleCommandChat(cmd);
else if(cmd.lcommand == "permgrant")
handleCommandPermGrant(cmd);
else if(cmd.lcommand == "dummycrash" || cmd.lcommand == "dummy_crash")
handleCommandDummyCrash(cmd);
else if(cmd.lcommand == "dummyfdflood" || cmd.lcommand == "dummy_fdflood")
handleCommandDummyFdFlood(cmd);
else if(cmd.lcommand == "meminfo")
handleCommandMemInfo(cmd);
else if(cmd.lcommand == "spoken")
handleCommandSpoken(cmd);
else if(cmd.lcommand == "passwd")
handleCommandPasswd(cmd);
else if(cmd.lcommand == "memflush")
handleCommandMemFlush(cmd);
else if(cmd.lcommand == "statsreset")
handleCommandStatsReset(cmd);
else if(cmd.lcommand == "reload")
handleCommandReload(cmd);
else logError("Missing command " + cmd.command + "/" + cmd.line);
}
bool handleCommandDummyCrash(TerminalCommand& arguments) {
if(!arguments.arguments.empty()) {
if(arguments.larguments[0] == "raise") {
raise(SIGABRT);
return true;
} else if(arguments.larguments[0] == "assert") { //dummycrash assert
assert(false);
return true;
} else if(arguments.larguments[0] == "exception") {
throw std::bad_exception();
}
}
*(int*)(nullptr) = 0;
return true;
}
bool handleCommandHelp(TerminalCommand& args){
logMessage("§aAvariable commands:");
logMessage(" §7- §eend §7| §eshutdown");
logMessage(" §7- §ereload config");
logMessage(" §7- §echat");
logMessage(" §7- §einfo");
logMessage(" §7- §epermgrant");
logMessage(" §7- §epasswd");
logMessage(" §7- §4dummy_crash");
logMessage(" §7- §4memflush");
logMessage(" §7- §4meminfo");
return true;
}
bool handleCommandEnd(TerminalCommand& arguments){
if(arguments.arguments.size() < 1) {
logMessage("Invalid argument count!");
logMessage("Usage: shutdown <now|<number>[h|m|s]:...> <reason>");
logMessage("Example: shutdown info | Displays info about the current scheduled shutdown");
logMessage("Example: shutdown cancel | Cancels the currently scheduled shutdown");
logMessage("Example: shutdown now Server shutdown | The server instance will shutdown instantly");
logMessage("Example: shutdown 1h:30m Server shutdown | The server instance will shutdown in 1h and 30 min");
logMessage("Example: shutdown 1h:1m:1s Server shutdown | The server instance will shutdown in 1h and 1 min and 1 second");
return false;
}
nanoseconds period{};
if(arguments.larguments[0] == "info") {
auto task = ts::server::scheduledShutdown();
if(!task) {
logMessage("It isn't a shutdown scheduled!");
} else {
auto time = system_clock::to_time_t(task->time_point);
logMessage("You scheduled a shutdown task at " + string(ctime(&time)));
}
return true;
} else if(arguments.larguments[0] == "cancel") {
auto task = ts::server::scheduledShutdown();
if(!task) {
logMessage("The isnt a shutdown scheduled!");
} else {
ts::server::cancelShutdown(true);
logMessage("Shutdown task canceled!");
}
return true;
} else if(arguments.larguments[0] != "now") {
string error;
period = period::parse(arguments.larguments[0], error);
if(!error.empty()) {
logError("Invalid period: " + error);
return false;
}
}
std::string reason = ts::config::messages::applicationStopped;
if(arguments.arguments.size() > 1) {
reason = "";
for(auto it = arguments.arguments.begin() + 1; it != arguments.arguments.end(); it++)
reason += it->string() + (it + 1 != arguments.arguments.end() ? " " : "");
}
if(period.count() == 0) {
logMessage("Stopping instance");
ts::server::shutdownInstance(reason);
} else {
auto time = system_clock::to_time_t(system_clock::now() + period);
logMessage("Scheduled shutdown at " + string(ctime(&time)) + "");
ts::server::scheduleShutdown(system_clock::now() + period, reason);
}
return true;
}
bool handleCommandInfo(TerminalCommand& cmd){
return false;
}
bool handleCommandChat(TerminalCommand& cmd){
if(cmd.arguments.size() < 3){
logError("Invalid usage!");
logMessage("§e/chat <serverId> <mode{server=3|channel=2|manager=1}> <targetId> <message...>");
return false;
}
ServerId sid = cmd.arguments[0];
auto server = sid == 0 ? nullptr : serverInstance->getVoiceServerManager()->findServerById(sid);
if(sid != 0 && !server) {
logError("Could not resolve target server.");
return false;
}
ts::ChatMessageMode mode = cmd.arguments[1];
if(sid == 0 && mode != ChatMessageMode::TEXTMODE_SERVER){
logError("Invalid mode/serverId");
return false;
}
debugMessage("Chat message mode " + to_string(mode));
std::string message;
int index = 3;
while(index < cmd.arguments.size()){
message += " " + cmd.arguments[index++].as<std::string>();
}
if(message.empty()){
logError("Invalid message!");
return false;
}
message = message.substr(1);
switch (mode){
case ChatMessageMode::TEXTMODE_SERVER:
if(server){
server->broadcastMessage(server->getServerRoot(), message);
} else {
for(auto srv : serverInstance->getVoiceServerManager()->serverInstances())
if(srv->running())
srv->broadcastMessage(srv->getServerRoot(), message);
}
break;
case ChatMessageMode::TEXTMODE_CHANNEL:
{
auto channel = server->getChannelTree()->findChannel(cmd.arguments[2].as<ChannelId>());
if(!channel){
logError("Could not resole target channel!");
return false;
}
for(const auto &cl : server->getClientsByChannel(channel))
cl->notifyTextMessage(ChatMessageMode::TEXTMODE_CHANNEL, server->getServerRoot(), cl->getClientId(), 0, system_clock::now(), message);
}
break;
case ChatMessageMode::TEXTMODE_PRIVATE:
{
auto client = server->findClient(cmd.arguments[2].as<ClientId>());
if(!client){
logError("Cloud not find manager from clid");
return false;
}
client->notifyTextMessage(ChatMessageMode::TEXTMODE_CHANNEL, server->getServerRoot(), client->getClientId(), 0, system_clock::now(), message);
}
break;
default:
logError("Invalid chat message mode!");
return false;
}
logMessage("Chat message successfully send!");
return true;
}
bool handleCommandPermGrant(TerminalCommand& cmd) {
if(cmd.arguments.size() != 4) {
logError("Invalid arguments!");
logMessage("Arguments: <ServerId> <GroupId> <Permission Name> <Grant>");
return true;
}
if(cmd.larguments[0].find_first_not_of("0123456789") != std::string::npos) {
logError("Invalid server id! (Given number isn't numeric!)");
return false;
}
if(cmd.larguments[1].find_first_not_of("0123456789") != std::string::npos) {
logError("Invalid group id! (Given number isn't numeric!)");
return false;
}
if(cmd.larguments[3].find_first_not_of("-0123456789") != std::string::npos) {
logError("Invalid grant number! (Given number isn't numeric!)");
return false;
}
permission::PermissionValue grant;
ServerId serverId;
GroupId groupId;
try {
serverId = cmd.arguments[0];
groupId = cmd.arguments[1];
grant = cmd.arguments[3];
} catch(const std::exception& ex){
logError("Could not parse given numbers");
return false;
}
auto server = serverInstance->getVoiceServerManager()->findServerById(serverId);
if(!server) {
logError("Could not resolve server!");
return false;
}
auto group = server->getGroupManager()->findGroup(groupId);
if(!group) {
logError("Could not resolve server group!");
return false;
}
auto perm = permission::resolvePermissionData(cmd.larguments[2]);
if(perm->type == permission::unknown) {
logError("Could not resolve permission!");
return false;
}
group->permissions()->set_permission(perm->type, {0, grant}, permission::v2::do_nothing, permission::v2::set_value);
logMessage("§aSuccessfully updated grant permissions.");
return true;
}
//meminfo basic
//memflush buffer
//memflush alloc
bool handleCommandMemFlush(TerminalCommand& cmd) {
if(cmd.arguments.size() > 0) {
if(cmd.larguments[0] == "db") {
if(serverInstance->getSql()->getType() != sql::TYPE_SQLITE) {
logMessage("This command just works when you use sqlite!");
return false;
}
logMessage("Memory used by SQLite:");
logMessage(" Currently used: {0:>6}kb ({0:>9} bytes)", sqlite3_memory_used() / 1024);
logMessage(" Max used: {0:>6}kb ({0:>9} bytes)", sqlite3_memory_highwater(true) / 1024);
logMessage(" Freed: {0:>6}kb ({0:>9} bytes)", sqlite3_db_release_memory(((sql::sqlite::SqliteManager*) serverInstance->getSql())->getDatabase()) / 1024);
logMessage(" Used after free: {0:>6}kb ({0:>9} bytes)", sqlite3_memory_used() / 1024);
sqlite3_memory_highwater(true); //Reset the watermark
return true;
} else if(cmd.larguments[0] == "buffer") {
auto info = buffer::cleanup_buffers(buffer::cleanmode::CHUNKS_BLOCKS);
logMessage("Cleaned up {} bytes ({} bytes internal)", info.bytes_freed_internal + info.bytes_freed_buffer,info.bytes_freed_internal);
return true;
} else if(cmd.larguments[0] == "alloc") {
#ifdef HAVE_JEMALLOC
size_t
old_retained, old_active, old_allocated,
new_retained, new_active, new_allocated,
size_size_t;
mallctl("stats.retained", &old_retained, &(size_size_t = sizeof(size_t)), nullptr, 0);
mallctl("stats.allocated", &old_allocated, &(size_size_t = sizeof(size_t)), nullptr, 0);
mallctl("stats.active", &old_active, &(size_size_t = sizeof(size_t)), nullptr, 0);
auto begin = system_clock::now();
mallctl("arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".decay", nullptr, nullptr, nullptr, 0);
mallctl("arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".purge", nullptr, nullptr, nullptr, 0);
auto end = system_clock::now();
{ /* refresh everything */
uint64_t epoch = static_cast<uint64_t>(system_clock::now().time_since_epoch().count());
mallctl("epoch", nullptr, nullptr, &epoch, sizeof(int16_t));
}
mallctl("stats.retained", &new_retained, &(size_size_t = sizeof(size_t)), nullptr, 0);
mallctl("stats.allocated", &new_allocated, &(size_size_t = sizeof(size_t)), nullptr, 0);
mallctl("stats.active", &new_active, &(size_size_t = sizeof(size_t)), nullptr, 0);
logMessage("Cleaned up allocated internals successfully within {}us", duration_cast<microseconds>(end - begin).count());
logMessage(" Allocated: {0:>9} => {0:>9} bytes", old_allocated, new_allocated);
logMessage(" Retained : {0:>9} => {0:>9} bytes", old_retained, new_retained);
logMessage(" Active : {0:>9} => {0:>9} bytes", old_active, new_active);
#else
logError("Jemalloc extension has not been compiled!");
#endif
return true;
}
}
logMessage("Invalid argument count. Possible: [db|buffer|alloc]");
return true;
}
void process_mem_usage(double& vm_usage, double& resident_set)
{
vm_usage = 0.0;
resident_set = 0.0;
// the two fields we want
unsigned long vsize;
long rss;
{
std::string ignore;
std::ifstream ifs("/proc/self/stat", std::ios_base::in);
ifs >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore
>> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore >> ignore
>> ignore >> ignore >> vsize >> rss;
}
long page_size_kb = sysconf(_SC_PAGE_SIZE) / 1024; // in case x86-64 is configured to use 2MB pages
vm_usage = vsize / 1024.0;
resident_set = rss * page_size_kb;
}
bool handleCommandMemInfo(TerminalCommand& cmd){
bool flag_base = false, flag_malloc = false, flag_track = false, flag_buffer = false;
if(cmd.arguments.size() > 0) {
if(cmd.larguments[0] == "basic")
flag_base = true;
else if(cmd.larguments[0] == "malloc")
flag_malloc = true;
else if(cmd.larguments[0] == "track")
flag_track = true;
else if(cmd.larguments[0] == "buffers")
flag_buffer = true;
} else {
flag_base = flag_malloc = flag_track = flag_buffer = true;
}
if(flag_base) {
double vm, rss;
process_mem_usage(vm, rss);
logMessage("Used memory: {} (VM: {})", rss, vm);
}
if(flag_malloc) {
stringstream ss;
#ifdef HAVE_JEMALLOC
malloc_stats_print([](void* data, const char* buffer) {
auto _ss = (stringstream*) data;
*_ss << buffer;
}, &ss, nullptr);
#else
ss << "Jemalloc is not present!";
#endif
logMessage(ss.str());
}
if(flag_track)
memtrack::statistics();
if(flag_buffer) {
auto info = buffer::buffer_memory();
logMessage("Allocated memory: {}kb", ceil((info.bytes_internal + info.bytes_buffer) / 1024));
logMessage(" Internal: {}kb", ceil((info.bytes_internal) / 1024));
logMessage(" Buffers : {}kb", ceil((info.bytes_buffer) / 1024));
logMessage(" Buffers Used: {}kb", ceil((info.bytes_buffer_used) / 1024));
}
return true;
}
bool handleCommandSpoken(TerminalCommand& cmd) {
//TODO print spoken statistics
return false;
}
bool handleCommandPasswd(TerminalCommand& cmd) {
if(cmd.arguments.size() != 2) {
logError("Invalid usage: passwd <new_password> <repeated>");
return false;
}
if(cmd.arguments[0].string() != cmd.arguments[1].string()) {
logError("Passwords does not match!");
return false;
}
auto serveradmin = serverInstance->getQueryServer()->find_query_account_by_name("serveradmin");
if(!serveradmin) {
auto password = "";
logErrorFmt(true, 0, "Creating a new serveradmin query login!");
if(!(serveradmin = serverInstance->getQueryServer()->create_query_account("serveradmin", 0, "serveradmin", password))) {
logError("Could not create serveradmin account!");
return false;
}
}
serverInstance->getQueryServer()->change_query_password(serveradmin, cmd.arguments[0]);
logMessage("Server admin successfully changed!");
return false;
}
extern bool handleCommandStatsReset(TerminalCommand& cmd) {
serverInstance->properties()[property::SERVERINSTANCE_MONTHLY_TIMESTAMP] = 0;
logMessage("Monthly statistics will be reset");
return true;
}
deque<int> fd_leaks;
bool handleCommandDummyFdFlood(TerminalCommand& cmd) {
size_t value;
if(cmd.arguments.size() < 1) {
value = 1024;
rlimit limit{1024, 10000};
setrlimit(7, &limit);
} else if(cmd.larguments[0] == "clear") {
logMessage("Clearup leaks");
for(auto& fd : fd_leaks)
close(fd);
fd_leaks.clear();
return true;
} else {
value = cmd.arguments[0].as<size_t>();
}
logMessage("Leaking {} file descriptors", value);
size_t index = 0;
while(index < value) {
auto fd = dup(1);
if(fd < 0)
logMessage("Failed to create a file descriptor {} | {}", errno, strerror(errno));
else
fd_leaks.push_back(fd);
index++;
}
return true;
}
bool handleCommandReload(TerminalCommand& cmd) {
if(cmd.larguments.size() < 1 || cmd.larguments[0] != "config") {
logMessage("Invalid target. Available: config");
return true;
}
vector<string> error;
if(!serverInstance->reloadConfig(error, true)) {
logError("Failed to reload instance ({}):", error.size());
for(auto& msg : error)
logError(" - {}", msg);
} else if(!error.empty()) {
logMessage("Reloaded successfully. Messages:");
for(auto& msg : error)
logMessage(" - {}", msg);
} else {
logMessage("Reloaded successfully.");
}
return true;
}
}
}