mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-26 04:31:37 +08:00
594 lines
23 KiB
C++
Executable File
594 lines
23 KiB
C++
Executable File
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include <sstream>
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#include "Util/logger.h"
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#include "Util/onceToken.h"
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#include "Util/NoticeCenter.h"
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#include "Common/config.h"
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#include "Common/MediaSource.h"
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#include "Http/HttpRequester.h"
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#include "Network/TcpSession.h"
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#include "Rtsp/RtspSession.h"
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#include "Http/HttpSession.h"
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#include "WebHook.h"
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#include "WebApi.h"
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using namespace toolkit;
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using namespace mediakit;
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namespace Hook {
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#define HOOK_FIELD "hook."
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const string kEnable = HOOK_FIELD"enable";
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const string kTimeoutSec = HOOK_FIELD"timeoutSec";
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const string kOnPublish = HOOK_FIELD"on_publish";
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const string kOnPlay = HOOK_FIELD"on_play";
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const string kOnFlowReport = HOOK_FIELD"on_flow_report";
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const string kOnRtspRealm = HOOK_FIELD"on_rtsp_realm";
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const string kOnRtspAuth = HOOK_FIELD"on_rtsp_auth";
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const string kOnStreamChanged = HOOK_FIELD"on_stream_changed";
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const string kOnStreamNotFound = HOOK_FIELD"on_stream_not_found";
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const string kOnRecordMp4 = HOOK_FIELD"on_record_mp4";
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const string kOnRecordTs = HOOK_FIELD"on_record_ts";
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const string kOnShellLogin = HOOK_FIELD"on_shell_login";
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const string kOnStreamNoneReader = HOOK_FIELD"on_stream_none_reader";
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const string kOnHttpAccess = HOOK_FIELD"on_http_access";
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const string kOnServerStarted = HOOK_FIELD"on_server_started";
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const string kOnServerKeepalive = HOOK_FIELD"on_server_keepalive";
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const string kAdminParams = HOOK_FIELD"admin_params";
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const string kAliveInterval = HOOK_FIELD"alive_interval";
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onceToken token([](){
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mINI::Instance()[kEnable] = false;
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mINI::Instance()[kTimeoutSec] = 10;
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//默认hook地址设置为空，采用默认行为(例如不鉴权)
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mINI::Instance()[kOnPublish] = "";
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mINI::Instance()[kOnPlay] = "";
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mINI::Instance()[kOnFlowReport] = "";
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mINI::Instance()[kOnRtspRealm] = "";
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mINI::Instance()[kOnRtspAuth] = "";
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mINI::Instance()[kOnStreamChanged] = "";
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mINI::Instance()[kOnStreamNotFound] = "";
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mINI::Instance()[kOnRecordMp4] = "";
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mINI::Instance()[kOnRecordTs] = "";
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mINI::Instance()[kOnShellLogin] = "";
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mINI::Instance()[kOnStreamNoneReader] = "";
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mINI::Instance()[kOnHttpAccess] = "";
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mINI::Instance()[kOnServerStarted] = "";
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mINI::Instance()[kOnServerKeepalive] = "";
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mINI::Instance()[kAdminParams] = "secret=035c73f7-bb6b-4889-a715-d9eb2d1925cc";
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mINI::Instance()[kAliveInterval] = 30.0;
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},nullptr);
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}//namespace Hook
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namespace Cluster {
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#define CLUSTER_FIELD "cluster."
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const string kOriginUrl = CLUSTER_FIELD "origin_url";
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const string kTimeoutSec = CLUSTER_FIELD "timeout_sec";
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static onceToken token([]() {
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mINI::Instance()[kOriginUrl] = "";
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mINI::Instance()[kTimeoutSec] = 15;
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});
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}//namespace Cluster
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static void parse_http_response(const SockException &ex, const Parser &res,
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const function<void(const Value &,const string &)> &fun){
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if (ex) {
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auto errStr = StrPrinter << "[network err]:" << ex.what() << endl;
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fun(Json::nullValue, errStr);
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return;
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}
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if (res.Url() != "200") {
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auto errStr = StrPrinter << "[bad http status code]:" << res.Url() << endl;
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fun(Json::nullValue, errStr);
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return;
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}
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Value result;
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try {
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stringstream ss(res.Content());
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ss >> result;
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} catch (std::exception &ex) {
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auto errStr = StrPrinter << "[parse json failed]:" << ex.what() << endl;
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fun(Json::nullValue, errStr);
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return;
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}
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if (result["code"].asInt() != 0) {
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auto errStr = StrPrinter << "[json code]:" << "code=" << result["code"] << ",msg=" << result["msg"] << endl;
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fun(Json::nullValue, errStr);
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return;
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}
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try {
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fun(result, "");
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} catch (std::exception &ex) {
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auto errStr = StrPrinter << "[do hook invoker failed]:" << ex.what() << endl;
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//如果还是抛异常，那么再上抛异常
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fun(Json::nullValue, errStr);
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}
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}
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string to_string(const Value &value){
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return value.toStyledString();
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}
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string to_string(const HttpArgs &value){
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return value.make();
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}
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const char *getContentType(const Value &value){
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return "application/json";
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}
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const char *getContentType(const HttpArgs &value){
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return "application/x-www-form-urlencoded";
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}
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string getVhost(const Value &value) {
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const char *key = VHOST_KEY;
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auto val = value.find(key, key + sizeof(VHOST_KEY) - 1);
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return val ? val->asString() : "";
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}
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string getVhost(const HttpArgs &value) {
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auto val = value.find(VHOST_KEY);
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return val != value.end() ? val->second : "";
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}
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void do_http_hook(const string &url,const ArgsType &body,const function<void(const Value &,const string &)> &func){
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GET_CONFIG(string, mediaServerId, General::kMediaServerId);
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GET_CONFIG(float, hook_timeoutSec, Hook::kTimeoutSec);
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const_cast<ArgsType &>(body)["mediaServerId"] = mediaServerId;
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HttpRequester::Ptr requester(new HttpRequester);
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requester->setMethod("POST");
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auto bodyStr = to_string(body);
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requester->setBody(bodyStr);
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requester->addHeader("Content-Type", getContentType(body));
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auto vhost = getVhost(body);
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if (!vhost.empty()) {
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requester->addHeader("X-VHOST", vhost);
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}
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std::shared_ptr<Ticker> pTicker(new Ticker);
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requester->startRequester(url, [url, func, bodyStr, requester, pTicker](const SockException &ex,
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const Parser &res) mutable{
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onceToken token(nullptr, [&]() mutable{
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requester.reset();
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});
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parse_http_response(ex, res, [&](const Value &obj, const string &err) {
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if (func) {
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func(obj, err);
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}
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if (!err.empty()) {
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WarnL << "hook " << url << " " << pTicker->elapsedTime() << "ms,failed" << err << ":" << bodyStr;
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} else if (pTicker->elapsedTime() > 500) {
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DebugL << "hook " << url << " " << pTicker->elapsedTime() << "ms,success:" << bodyStr;
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}
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});
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}, hook_timeoutSec);
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}
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static ArgsType make_json(const MediaInfo &args){
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ArgsType body;
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body["schema"] = args._schema;
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body[VHOST_KEY] = args._vhost;
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body["app"] = args._app;
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body["stream"] = args._streamid;
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body["params"] = args._param_strs;
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return body;
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}
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static void reportServerStarted(){
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GET_CONFIG(bool,hook_enable,Hook::kEnable);
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GET_CONFIG(string,hook_server_started,Hook::kOnServerStarted);
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if(!hook_enable || hook_server_started.empty()){
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return;
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}
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ArgsType body;
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for (auto &pr : mINI::Instance()) {
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body[pr.first] = (string &) pr.second;
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}
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//执行hook
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do_http_hook(hook_server_started,body, nullptr);
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}
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// 服务器定时保活定时器
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static Timer::Ptr g_keepalive_timer;
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static void reportServerKeepalive() {
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GET_CONFIG(bool, hook_enable, Hook::kEnable);
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GET_CONFIG(string, hook_server_keepalive, Hook::kOnServerKeepalive);
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if (!hook_enable || hook_server_keepalive.empty()) {
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return;
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}
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GET_CONFIG(float, alive_interval, Hook::kAliveInterval);
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g_keepalive_timer = std::make_shared<Timer>(alive_interval, []() {
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getStatisticJson([](const Value &data) mutable {
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ArgsType body;
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body["data"] = data;
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//执行hook
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do_http_hook(hook_server_keepalive, body, nullptr);
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});
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return true;
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}, nullptr);
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}
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static const string kEdgeServerParam = "edge=1";
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static string getPullUrl(const string &origin_fmt, const MediaInfo &info) {
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char url[1024] = { 0 };
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if (origin_fmt.size() > snprintf(url, sizeof(url), origin_fmt.data(), info._app.data(), info._streamid.data())) {
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WarnL << "get origin url failed, origin_fmt:" << origin_fmt;
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return "";
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}
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//告知源站这是来自边沿站的拉流请求，如果未找到流请立即返回拉流失败
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return string(url) + '?' + kEdgeServerParam + '&' + VHOST_KEY + '=' + info._vhost + '&' + info._param_strs;
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}
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static void pullStreamFromOrigin(const vector<string>& urls, int index, int failed_cnt, const MediaInfo &args,
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const function<void()> &closePlayer) {
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GET_CONFIG(float, cluster_timeout_sec, Cluster::kTimeoutSec);
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auto url = getPullUrl(urls[index % urls.size()], args);
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auto timeout_sec = cluster_timeout_sec / urls.size();
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InfoL << "pull stream from origin, failed_cnt: " << failed_cnt << ", timeout_sec: " << timeout_sec << ", url: " << url;
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addStreamProxy(args._vhost, args._app, args._streamid, url, -1, args._schema == HLS_SCHEMA, false,
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Rtsp::RTP_TCP, timeout_sec, [=](const SockException &ex, const string &key) mutable {
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if (!ex) {
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return;
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}
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//拉流失败
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if (++failed_cnt == urls.size()) {
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//已经重试所有源站了
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WarnL << "pull stream from origin final failed: " << url;
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closePlayer();
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return;
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}
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pullStreamFromOrigin(urls, index + 1, failed_cnt, args, closePlayer);
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});
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}
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void installWebHook(){
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GET_CONFIG(bool,hook_enable,Hook::kEnable);
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GET_CONFIG(string,hook_adminparams,Hook::kAdminParams);
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NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastMediaPublish,[](BroadcastMediaPublishArgs){
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GET_CONFIG(string,hook_publish,Hook::kOnPublish);
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GET_CONFIG(bool,toHls,General::kPublishToHls);
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GET_CONFIG(bool,toMP4,General::kPublishToMP4);
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if(!hook_enable || args._param_strs == hook_adminparams || hook_publish.empty() || sender.get_peer_ip() == "127.0.0.1"){
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invoker("", toHls, toMP4);
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return;
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}
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//异步执行该hook api，防止阻塞NoticeCenter
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auto body = make_json(args);
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body["ip"] = sender.get_peer_ip();
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body["port"] = sender.get_peer_port();
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body["id"] = sender.getIdentifier();
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//执行hook
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do_http_hook(hook_publish,body,[invoker](const Value &obj,const string &err){
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if(err.empty()){
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//推流鉴权成功
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bool enableHls = toHls;
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bool enableMP4 = toMP4;
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//兼容用户不传递enableHls、enableMP4参数
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if (obj.isMember("enableHls")) {
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enableHls = obj["enableHls"].asBool();
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}
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if (obj.isMember("enableMP4")) {
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enableMP4 = obj["enableMP4"].asBool();
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}
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invoker(err, enableHls, enableMP4);
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} else {
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//推流鉴权失败
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invoker(err, false, false);
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}
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});
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});
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NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastMediaPlayed,[](BroadcastMediaPlayedArgs){
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GET_CONFIG(string,hook_play,Hook::kOnPlay);
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if(!hook_enable || args._param_strs == hook_adminparams || hook_play.empty() || sender.get_peer_ip() == "127.0.0.1"){
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invoker("");
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return;
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}
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auto body = make_json(args);
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body["ip"] = sender.get_peer_ip();
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body["port"] = sender.get_peer_port();
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body["id"] = sender.getIdentifier();
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//执行hook
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do_http_hook(hook_play,body,[invoker](const Value &obj,const string &err){
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invoker(err);
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});
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});
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NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastFlowReport,[](BroadcastFlowReportArgs){
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GET_CONFIG(string,hook_flowreport,Hook::kOnFlowReport);
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if(!hook_enable || args._param_strs == hook_adminparams || hook_flowreport.empty() || sender.get_peer_ip() == "127.0.0.1"){
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return;
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}
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auto body = make_json(args);
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body["totalBytes"] = (Json::UInt64)totalBytes;
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body["duration"] = (Json::UInt64)totalDuration;
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body["player"] = isPlayer;
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body["ip"] = sender.get_peer_ip();
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body["port"] = sender.get_peer_port();
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body["id"] = sender.getIdentifier();
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//执行hook
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do_http_hook(hook_flowreport,body, nullptr);
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});
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static const string unAuthedRealm = "unAuthedRealm";
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//监听kBroadcastOnGetRtspRealm事件决定rtsp链接是否需要鉴权(传统的rtsp鉴权方案)才能访问
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NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastOnGetRtspRealm,[](BroadcastOnGetRtspRealmArgs){
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GET_CONFIG(string,hook_rtsp_realm,Hook::kOnRtspRealm);
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if(!hook_enable || args._param_strs == hook_adminparams || hook_rtsp_realm.empty() || sender.get_peer_ip() == "127.0.0.1"){
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//无需认证
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invoker("");
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return;
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}
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auto body = make_json(args);
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body["ip"] = sender.get_peer_ip();
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body["port"] = sender.get_peer_port();
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body["id"] = sender.getIdentifier();
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//执行hook
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do_http_hook(hook_rtsp_realm,body, [invoker](const Value &obj,const string &err){
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if(!err.empty()){
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//如果接口访问失败，那么该rtsp流认证失败
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invoker(unAuthedRealm);
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return;
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}
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invoker(obj["realm"].asString());
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});
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});
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//监听kBroadcastOnRtspAuth事件返回正确的rtsp鉴权用户密码
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NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastOnRtspAuth,[](BroadcastOnRtspAuthArgs){
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GET_CONFIG(string,hook_rtsp_auth,Hook::kOnRtspAuth);
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if(unAuthedRealm == realm || !hook_enable || hook_rtsp_auth.empty()){
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//认证失败
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invoker(false,makeRandStr(12));
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return;
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}
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auto body = make_json(args);
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body["ip"] = sender.get_peer_ip();
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body["port"] = sender.get_peer_port();
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body["id"] = sender.getIdentifier();
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body["user_name"] = user_name;
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body["must_no_encrypt"] = must_no_encrypt;
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body["realm"] = realm;
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//执行hook
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do_http_hook(hook_rtsp_auth,body, [invoker](const Value &obj,const string &err){
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if(!err.empty()){
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//认证失败
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invoker(false,makeRandStr(12));
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return;
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}
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invoker(obj["encrypted"].asBool(),obj["passwd"].asString());
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});
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});
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//监听rtsp、rtmp源注册或注销事件
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NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastMediaChanged,[](BroadcastMediaChangedArgs){
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GET_CONFIG(string,hook_stream_chaned,Hook::kOnStreamChanged);
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if(!hook_enable || hook_stream_chaned.empty()){
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return;
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}
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ArgsType body;
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if (bRegist) {
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body = makeMediaSourceJson(sender);
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body["regist"] = bRegist;
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} else {
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body["schema"] = sender.getSchema();
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body[VHOST_KEY] = sender.getVhost();
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body["app"] = sender.getApp();
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body["stream"] = sender.getId();
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body["regist"] = bRegist;
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}
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//执行hook
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do_http_hook(hook_stream_chaned,body, nullptr);
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});
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GET_CONFIG_FUNC(vector<string>, origin_urls, Cluster::kOriginUrl, [](const string &str) {
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vector<string> ret;
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for (auto &url : split(str, ";")) {
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trim(url);
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if (!url.empty()) {
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ret.emplace_back(url);
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}
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}
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return ret;
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});
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//监听播放失败(未找到特定的流)事件
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NoticeCenter::Instance().addListener(nullptr, Broadcast::kBroadcastNotFoundStream, [](BroadcastNotFoundStreamArgs) {
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if (!origin_urls.empty()) {
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//设置了源站，那么尝试溯源
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static atomic<uint8_t> s_index { 0 };
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pullStreamFromOrigin(origin_urls, s_index.load(), 0, args, closePlayer);
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++s_index;
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return;
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}
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if (start_with(args._param_strs, kEdgeServerParam)) {
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//源站收到来自边沿站的溯源请求，流不存在时立即返回拉流失败
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closePlayer();
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return;
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}
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GET_CONFIG(string, hook_stream_not_found, Hook::kOnStreamNotFound);
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if (!hook_enable || hook_stream_not_found.empty()) {
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return;
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}
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auto body = make_json(args);
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body["ip"] = sender.get_peer_ip();
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body["port"] = sender.get_peer_port();
|
||
body["id"] = sender.getIdentifier();
|
||
//执行hook
|
||
do_http_hook(hook_stream_not_found, body, nullptr);
|
||
});
|
||
|
||
static auto getRecordInfo = [](const RecordInfo &info) {
|
||
ArgsType body;
|
||
body["start_time"] = (Json::UInt64) info.start_time;
|
||
body["file_size"] = (Json::UInt64) info.file_size;
|
||
body["time_len"] = info.time_len;
|
||
body["file_path"] = info.file_path;
|
||
body["file_name"] = info.file_name;
|
||
body["folder"] = info.folder;
|
||
body["url"] = info.url;
|
||
body["app"] = info.app;
|
||
body["stream"] = info.stream;
|
||
body[VHOST_KEY] = info.vhost;
|
||
return body;
|
||
};
|
||
|
||
#ifdef ENABLE_MP4
|
||
//录制mp4文件成功后广播
|
||
NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastRecordMP4,[](BroadcastRecordMP4Args){
|
||
GET_CONFIG(string,hook_record_mp4,Hook::kOnRecordMp4);
|
||
if (!hook_enable || hook_record_mp4.empty()) {
|
||
return;
|
||
}
|
||
//执行hook
|
||
do_http_hook(hook_record_mp4, getRecordInfo(info), nullptr);
|
||
});
|
||
#endif //ENABLE_MP4
|
||
|
||
NoticeCenter::Instance().addListener(nullptr, Broadcast::kBroadcastRecordTs, [](BroadcastRecordTsArgs) {
|
||
GET_CONFIG(string,hook_record_ts,Hook::kOnRecordTs);
|
||
if (!hook_enable || hook_record_ts.empty()) {
|
||
return;
|
||
}
|
||
// 执行 hook
|
||
do_http_hook(hook_record_ts, getRecordInfo(info), nullptr);
|
||
});
|
||
|
||
NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastShellLogin,[](BroadcastShellLoginArgs){
|
||
GET_CONFIG(string,hook_shell_login,Hook::kOnShellLogin);
|
||
if(!hook_enable || hook_shell_login.empty() || sender.get_peer_ip() == "127.0.0.1"){
|
||
invoker("");
|
||
return;
|
||
}
|
||
ArgsType body;
|
||
body["ip"] = sender.get_peer_ip();
|
||
body["port"] = sender.get_peer_port();
|
||
body["id"] = sender.getIdentifier();
|
||
body["user_name"] = user_name;
|
||
body["passwd"] = passwd;
|
||
|
||
//执行hook
|
||
do_http_hook(hook_shell_login,body, [invoker](const Value &,const string &err){
|
||
invoker(err);
|
||
});
|
||
});
|
||
|
||
NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastStreamNoneReader,[](BroadcastStreamNoneReaderArgs) {
|
||
if (!origin_urls.empty()) {
|
||
//边沿站无人观看时立即停止溯源
|
||
sender.close(false);
|
||
WarnL << "无人观看主动关闭流:" << sender.getOriginUrl();
|
||
return;
|
||
}
|
||
GET_CONFIG(string,hook_stream_none_reader,Hook::kOnStreamNoneReader);
|
||
if(!hook_enable || hook_stream_none_reader.empty()){
|
||
return;
|
||
}
|
||
|
||
ArgsType body;
|
||
body["schema"] = sender.getSchema();
|
||
body[VHOST_KEY] = sender.getVhost();
|
||
body["app"] = sender.getApp();
|
||
body["stream"] = sender.getId();
|
||
weak_ptr<MediaSource> weakSrc = sender.shared_from_this();
|
||
//执行hook
|
||
do_http_hook(hook_stream_none_reader,body, [weakSrc](const Value &obj,const string &err){
|
||
bool flag = obj["close"].asBool();
|
||
auto strongSrc = weakSrc.lock();
|
||
if(!flag || !err.empty() || !strongSrc){
|
||
return;
|
||
}
|
||
strongSrc->close(false);
|
||
WarnL << "无人观看主动关闭流:" << strongSrc->getOriginUrl();
|
||
});
|
||
});
|
||
|
||
/**
|
||
* kBroadcastHttpAccess事件触发机制
|
||
* 1、根据http请求头查找cookie，找到进入步骤3
|
||
* 2、根据http url参数查找cookie，如果还是未找到cookie则进入步骤5
|
||
* 3、cookie标记是否有权限访问文件，如果有权限，直接返回文件
|
||
* 4、cookie中记录的url参数是否跟本次url参数一致，如果一致直接返回客户端错误码
|
||
* 5、触发kBroadcastHttpAccess事件
|
||
*/
|
||
//开发者应该通过该事件判定http客户端是否有权限访问http服务器上的特定文件
|
||
//ZLMediaKit会记录本次鉴权的结果至cookie
|
||
//如果鉴权成功，在cookie有效期内，那么下次客户端再访问授权目录时，ZLMediaKit会直接返回文件
|
||
//如果鉴权失败，在cookie有效期内，如果http url参数不变(否则会立即再次触发鉴权事件)，ZLMediaKit会直接返回错误码
|
||
//如果用户客户端不支持cookie，那么ZLMediaKit会根据url参数查找cookie并追踪用户，
|
||
//如果没有url参数，客户端又不支持cookie，那么会根据ip和端口追踪用户
|
||
//追踪用户的目的是为了缓存上次鉴权结果，减少鉴权次数，提高性能
|
||
NoticeCenter::Instance().addListener(nullptr,Broadcast::kBroadcastHttpAccess,[](BroadcastHttpAccessArgs){
|
||
GET_CONFIG(string,hook_http_access,Hook::kOnHttpAccess);
|
||
if(sender.get_peer_ip() == "127.0.0.1" || parser.Params() == hook_adminparams){
|
||
//如果是本机或超级管理员访问，那么不做访问鉴权；权限有效期1个小时
|
||
invoker("","",60 * 60);
|
||
return;
|
||
}
|
||
if(!hook_enable || hook_http_access.empty()){
|
||
//未开启http文件访问鉴权，那么允许访问，但是每次访问都要鉴权；
|
||
//因为后续随时都可能开启鉴权(重载配置文件后可能重新开启鉴权)
|
||
invoker("","",0);
|
||
return;
|
||
}
|
||
|
||
ArgsType body;
|
||
body["ip"] = sender.get_peer_ip();
|
||
body["port"] = sender.get_peer_port();
|
||
body["id"] = sender.getIdentifier();
|
||
body["path"] = path;
|
||
body["is_dir"] = is_dir;
|
||
body["params"] = parser.Params();
|
||
for(auto &pr : parser.getHeader()){
|
||
body[string("header.") + pr.first] = pr.second;
|
||
}
|
||
//执行hook
|
||
do_http_hook(hook_http_access,body, [invoker](const Value &obj,const string &err){
|
||
if(!err.empty()){
|
||
//如果接口访问失败，那么仅限本次没有访问http服务器的权限
|
||
invoker(err,"",0);
|
||
return;
|
||
}
|
||
//err参数代表不能访问的原因，空则代表可以访问
|
||
//path参数是该客户端能访问或被禁止的顶端目录，如果path为空字符串，则表述为当前目录
|
||
//second参数规定该cookie超时时间，如果second为0，本次鉴权结果不缓存
|
||
invoker(obj["err"].asString(),obj["path"].asString(),obj["second"].asInt());
|
||
});
|
||
});
|
||
|
||
//汇报服务器重新启动
|
||
reportServerStarted();
|
||
|
||
//定时上报保活
|
||
reportServerKeepalive();
|
||
}
|
||
|
||
void unInstallWebHook(){
|
||
g_keepalive_timer.reset();
|
||
}
|