mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-01 09:01:33 +08:00
1010 lines
34 KiB
C++
1010 lines
34 KiB
C++
/*
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* MIT License
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*
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* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
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*
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* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#if !defined(_WIN32)
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#include <dirent.h>
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#endif //!defined(_WIN32)
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#include <stdio.h>
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#include <sys/stat.h>
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#include <algorithm>
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#include <iomanip>
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#include "Common/config.h"
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#include "strCoding.h"
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#include "HttpSession.h"
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#include "Util/File.h"
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#include "Util/util.h"
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#include "Util/TimeTicker.h"
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#include "Util/onceToken.h"
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#include "Util/mini.h"
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#include "Util/NoticeCenter.h"
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#include "Util/base64.h"
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#include "Util/SHA1.h"
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#include "Rtmp/utils.h"
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using namespace toolkit;
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namespace mediakit {
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static int kHlsCookieSecond = 10 * 60;
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static const string kCookieName = "ZL_COOKIE";
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static const string kCookiePathKey = "kCookiePathKey";
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static const string kAccessErrKey = "kAccessErrKey";
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string dateStr() {
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char buf[64];
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time_t tt = time(NULL);
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strftime(buf, sizeof buf, "%a, %b %d %Y %H:%M:%S GMT", gmtime(&tt));
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return buf;
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}
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static const char*
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get_mime_type(const char* name) {
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const char* dot;
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dot = strrchr(name, '.');
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static HttpSession::KeyValue mapType;
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static onceToken token([&]() {
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mapType.emplace(".html","text/html");
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mapType.emplace(".htm","text/html");
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mapType.emplace(".mp4","video/mp4");
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mapType.emplace(".m3u8","application/vnd.apple.mpegurl");
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mapType.emplace(".jpg","image/jpeg");
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mapType.emplace(".jpeg","image/jpeg");
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mapType.emplace(".gif","image/gif");
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mapType.emplace(".png","image/png");
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mapType.emplace(".ico","image/x-icon");
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mapType.emplace(".css","text/css");
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mapType.emplace(".js","application/javascript");
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mapType.emplace(".au","audio/basic");
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mapType.emplace(".wav","audio/wav");
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mapType.emplace(".avi","video/x-msvideo");
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mapType.emplace(".mov","video/quicktime");
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mapType.emplace(".qt","video/quicktime");
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mapType.emplace(".mpeg","video/mpeg");
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mapType.emplace(".mpe","video/mpeg");
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mapType.emplace(".vrml","model/vrml");
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mapType.emplace(".wrl","model/vrml");
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mapType.emplace(".midi","audio/midi");
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mapType.emplace(".mid","audio/midi");
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mapType.emplace(".mp3","audio/mpeg");
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mapType.emplace(".ogg","application/ogg");
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mapType.emplace(".pac","application/x-ns-proxy-autoconfig");
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mapType.emplace(".flv","video/x-flv");
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}, nullptr);
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if(!dot){
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return "text/plain";
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}
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auto it = mapType.find(dot);
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if (it == mapType.end()) {
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return "text/plain";
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}
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return it->second.data();
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}
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HttpSession::HttpSession(const Socket::Ptr &pSock) : TcpSession(pSock) {
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TraceP(this);
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GET_CONFIG(uint32_t,keep_alive_sec,Http::kKeepAliveSecond);
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pSock->setSendTimeOutSecond(keep_alive_sec);
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//起始接收buffer缓存设置为4K，节省内存
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pSock->setReadBuffer(std::make_shared<BufferRaw>(4 * 1024));
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}
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HttpSession::~HttpSession() {
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TraceP(this);
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}
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int64_t HttpSession::onRecvHeader(const char *header,uint64_t len) {
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typedef void (HttpSession::*HttpCMDHandle)(int64_t &);
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static unordered_map<string, HttpCMDHandle> g_mapCmdIndex;
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static onceToken token([]() {
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g_mapCmdIndex.emplace("GET",&HttpSession::Handle_Req_GET);
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g_mapCmdIndex.emplace("POST",&HttpSession::Handle_Req_POST);
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}, nullptr);
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_parser.Parse(header);
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urlDecode(_parser);
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string cmd = _parser.Method();
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auto it = g_mapCmdIndex.find(cmd);
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if (it == g_mapCmdIndex.end()) {
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sendResponse("403 Forbidden", makeHttpHeader(true), "");
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shutdown(SockException(Err_shutdown,StrPrinter << "403 Forbidden:" << cmd));
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return 0;
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}
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//跨域
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_origin = _parser["Origin"];
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//默认后面数据不是content而是header
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int64_t content_len = 0;
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auto &fun = it->second;
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try {
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(this->*fun)(content_len);
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}catch (SockException &ex){
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if(ex){
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shutdown(ex);
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}
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}catch (exception &ex){
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shutdown(SockException(Err_shutdown,ex.what()));
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}
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//清空解析器节省内存
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_parser.Clear();
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//返回content长度
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return content_len;
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}
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void HttpSession::onRecvContent(const char *data,uint64_t len) {
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if(_contentCallBack){
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if(!_contentCallBack(data,len)){
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_contentCallBack = nullptr;
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}
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}
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}
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void HttpSession::onRecv(const Buffer::Ptr &pBuf) {
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_ticker.resetTime();
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input(pBuf->data(),pBuf->size());
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}
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void HttpSession::onError(const SockException& err) {
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if(_ticker.createdTime() < 10 * 1000){
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TraceP(this) << err.what();
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}else{
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WarnP(this) << err.what();
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}
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GET_CONFIG(uint32_t,iFlowThreshold,General::kFlowThreshold);
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if(_ui64TotalBytes > iFlowThreshold * 1024){
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NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastFlowReport,
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_mediaInfo,
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_ui64TotalBytes,
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_ticker.createdTime()/1000,
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true,
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*this);
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}
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}
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void HttpSession::onManager() {
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GET_CONFIG(uint32_t,keepAliveSec,Http::kKeepAliveSecond);
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if(_ticker.elapsedTime() > keepAliveSec * 1000){
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//1分钟超时
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shutdown(SockException(Err_timeout,"session timeouted"));
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}
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}
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bool HttpSession::checkWebSocket(){
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auto Sec_WebSocket_Key = _parser["Sec-WebSocket-Key"];
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if(Sec_WebSocket_Key.empty()){
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return false;
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}
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auto Sec_WebSocket_Accept = encodeBase64(SHA1::encode_bin(Sec_WebSocket_Key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"));
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KeyValue headerOut = makeHttpHeader();
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headerOut["Upgrade"] = "websocket";
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headerOut["Connection"] = "Upgrade";
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headerOut["Sec-WebSocket-Accept"] = Sec_WebSocket_Accept;
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if(!_parser["Sec-WebSocket-Protocol"].empty()){
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headerOut["Sec-WebSocket-Protocol"] = _parser["Sec-WebSocket-Protocol"];
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}
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auto res_cb = [this,headerOut](){
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_flv_over_websocket = true;
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sendResponse("101 Switching Protocols",headerOut,"");
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};
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//判断是否为websocket-flv
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if(checkLiveFlvStream(res_cb)){
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//这里是websocket-flv直播请求
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return true;
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}
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//如果checkLiveFlvStream返回false,则代表不是websocket-flv，而是普通的websocket连接
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if(!onWebSocketConnect(_parser)){
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sendResponse("501 Not Implemented",headerOut,"");
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shutdown(SockException(Err_shutdown,"WebSocket server not implemented"));
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return true;
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}
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sendResponse("101 Switching Protocols",headerOut,"");
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return true;
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}
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//http-flv 链接格式:http://vhost-url:port/app/streamid.flv?key1=value1&key2=value2
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//如果url(除去?以及后面的参数)后缀是.flv,那么表明该url是一个http-flv直播。
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bool HttpSession::checkLiveFlvStream(const function<void()> &cb){
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auto pos = strrchr(_parser.Url().data(),'.');
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if(!pos){
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//未找到".flv"后缀
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return false;
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}
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if(strcasecmp(pos,".flv") != 0){
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//未找到".flv"后缀
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return false;
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}
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//这是个.flv的流
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_mediaInfo.parse(string(RTMP_SCHEMA) + "://" + _parser["Host"] + _parser.FullUrl());
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if(_mediaInfo._app.empty() || _mediaInfo._streamid.size() < 5){
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//url不合法
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return false;
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}
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_mediaInfo._streamid.erase(_mediaInfo._streamid.size() - 4);//去除.flv后缀
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GET_CONFIG(uint32_t,reqCnt,Http::kMaxReqCount);
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bool bClose = (strcasecmp(_parser["Connection"].data(),"close") == 0) || ( ++_iReqCnt > reqCnt);
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weak_ptr<HttpSession> weakSelf = dynamic_pointer_cast<HttpSession>(shared_from_this());
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MediaSource::findAsync(_mediaInfo,weakSelf.lock(), true,[weakSelf,bClose,this,cb](const MediaSource::Ptr &src){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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//本对象已经销毁
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return;
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}
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auto rtmp_src = dynamic_pointer_cast<RtmpMediaSource>(src);
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if(!rtmp_src){
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//未找到该流
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sendNotFound(bClose);
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if(bClose){
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shutdown(SockException(Err_shutdown,"flv stream not found"));
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}
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return;
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}
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//找到流了
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auto onRes = [this,rtmp_src,cb](const string &err){
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bool authSuccess = err.empty();
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if(!authSuccess){
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sendResponse("401 Unauthorized", makeHttpHeader(true,err.size()),err);
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shutdown(SockException(Err_shutdown,StrPrinter << "401 Unauthorized:" << err));
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return ;
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}
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if(!cb) {
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//找到rtmp源，发送http头，负载后续发送
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sendResponse("200 OK", makeHttpHeader(false, 0, get_mime_type(".flv")), "");
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}else{
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cb();
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}
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//http-flv直播牺牲延时提升发送性能
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setSocketFlags();
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try{
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start(getPoller(),rtmp_src);
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}catch (std::exception &ex){
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//该rtmp源不存在
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shutdown(SockException(Err_shutdown,"rtmp mediasource released"));
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}
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};
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weak_ptr<HttpSession> weakSelf = dynamic_pointer_cast<HttpSession>(shared_from_this());
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Broadcast::AuthInvoker invoker = [weakSelf,onRes](const string &err){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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return;
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}
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strongSelf->async([weakSelf,onRes,err](){
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auto strongSelf = weakSelf.lock();
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if(!strongSelf){
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return;
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}
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onRes(err);
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});
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};
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed,_mediaInfo,invoker,*this);
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if(!flag){
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//该事件无人监听,默认不鉴权
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onRes("");
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}
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});
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return true;
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}
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bool makeMeun(const string &httpPath,const string &strFullPath, string &strRet) ;
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static string findIndexFile(const string &dir){
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DIR *pDir;
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dirent *pDirent;
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if ((pDir = opendir(dir.data())) == NULL) {
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return "";
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}
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set<string> setFile;
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while ((pDirent = readdir(pDir)) != NULL) {
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static set<const char *,StrCaseCompare> indexSet = {"index.html","index.htm","index"};
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if(indexSet.find(pDirent->d_name) != indexSet.end()){
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closedir(pDir);
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return pDirent->d_name;
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}
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}
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closedir(pDir);
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return "";
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}
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string HttpSession::getClientUid(){
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//如果http客户端不支持cookie，那么我们可以通过url参数来追踪用户
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//如果url参数也没有，那么只能通过ip+端口号来追踪用户
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//追踪用户的目的是为了减少http短链接情况的重复鉴权验证，通过缓存记录鉴权结果，提高性能
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string uid = _parser.Params();
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if(uid.empty()){
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uid = StrPrinter << get_peer_ip() << ":" << get_peer_port();
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}
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return uid;
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}
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//字符串是否以xx结尾
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static bool end_of(const string &str, const string &substr){
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auto pos = str.rfind(substr);
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return pos != string::npos && pos == str.size() - substr.size();
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};
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//拦截hls的播放请求
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static bool checkHls(BroadcastHttpAccessArgs){
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if(!end_of(args._streamid,("/hls.m3u8"))) {
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//不是hls
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return false;
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}
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//访问的hls.m3u8结尾，我们转换成kBroadcastMediaPlayed事件
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Broadcast::AuthInvoker mediaAuthInvoker = [invoker,path](const string &err){
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//cookie有效期为kHlsCookieSecond
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invoker(err,"",kHlsCookieSecond);
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};
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auto args_copy = args;
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replace(args_copy._streamid,"/hls.m3u8","");
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return NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed,args_copy,mediaAuthInvoker,sender);
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}
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void HttpSession::canAccessPath(const string &path_in,bool is_dir,const function<void(const string &errMsg,const HttpServerCookie::Ptr &cookie)> &callback_in){
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auto path = path_in;
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replace(const_cast<string &>(path),"//","/");
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auto callback = [callback_in,this](const string &errMsg,const HttpServerCookie::Ptr &cookie){
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try {
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callback_in(errMsg,cookie);
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}catch (SockException &ex){
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if(ex){
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shutdown(ex);
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}
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}catch (exception &ex){
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shutdown(SockException(Err_shutdown,ex.what()));
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}
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};
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//获取用户唯一id
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auto uid = getClientUid();
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//先根据http头中的cookie字段获取cookie
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HttpServerCookie::Ptr cookie = HttpCookieManager::Instance().getCookie(kCookieName, _parser.getValues());
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//如果不是从http头中找到的cookie,我们让http客户端设置下cookie
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bool cookie_from_header = true;
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if(!cookie){
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//客户端请求中无cookie,再根据该用户的用户id获取cookie
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cookie = HttpCookieManager::Instance().getCookieByUid(kCookieName, uid);
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cookie_from_header = false;
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}
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if(cookie){
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//找到了cookie，对cookie上锁先
|
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auto lck = cookie->getLock();
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auto accessErr = (*cookie)[kAccessErrKey].get<string>();
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auto cookiePath = (*cookie)[kCookiePathKey].get<string>();
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if(path.find(cookiePath) == 0){
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//上次cookie是限定本目录
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if(accessErr.empty()){
|
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//上次鉴权成功
|
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callback("", cookie_from_header ? nullptr : cookie);
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return;
|
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}
|
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//上次鉴权失败，但是如果url参数发生变更，那么也重新鉴权下
|
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if (_parser.Params().empty() || _parser.Params() == cookie->getUid()) {
|
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//url参数未变，或者本来就没有url参数，那么判断本次请求为重复请求，无访问权限
|
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callback(accessErr, cookie_from_header ? nullptr : cookie);
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return;
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}
|
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}
|
||
//如果url参数变了或者不是限定本目录，那么旧cookie失效，重新鉴权
|
||
HttpCookieManager::Instance().delCookie(cookie);
|
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}
|
||
|
||
//该用户从来未获取过cookie，这个时候我们广播是否允许该用户访问该http目录
|
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weak_ptr<HttpSession> weakSelf = dynamic_pointer_cast<HttpSession>(shared_from_this());
|
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HttpAccessPathInvoker accessPathInvoker = [weakSelf,callback,uid,path,is_dir] (const string &errMsg,const string &cookie_path_in, int cookieLifeSecond) {
|
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HttpServerCookie::Ptr cookie ;
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if(cookieLifeSecond) {
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//本次鉴权设置了有效期，我们把鉴权结果缓存在cookie中
|
||
string cookie_path = cookie_path_in;
|
||
if(cookie_path.empty()){
|
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//如果未设置鉴权目录，那么我们采用当前目录
|
||
cookie_path = is_dir ? path : path.substr(0,path.rfind("/") + 1);
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}
|
||
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cookie = HttpCookieManager::Instance().addCookie(kCookieName, uid, cookieLifeSecond);
|
||
//对cookie上锁
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||
auto lck = cookie->getLock();
|
||
//记录用户能访问的路径
|
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(*cookie)[kCookiePathKey].set<string>(cookie_path);
|
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//记录能否访问
|
||
(*cookie)[kAccessErrKey].set<string>(errMsg);
|
||
}
|
||
|
||
auto strongSelf = weakSelf.lock();
|
||
if (!strongSelf) {
|
||
//自己已经销毁
|
||
return;
|
||
}
|
||
strongSelf->async([weakSelf,callback,cookie,errMsg]() {
|
||
//切换到自己线程
|
||
auto strongSelf = weakSelf.lock();
|
||
if (!strongSelf) {
|
||
//自己已经销毁
|
||
return;
|
||
}
|
||
callback(errMsg, cookie);
|
||
});
|
||
};
|
||
|
||
if(checkHls(_parser,_mediaInfo,path,is_dir,accessPathInvoker,*this)){
|
||
//是hls的播放鉴权,拦截之
|
||
return;
|
||
}
|
||
|
||
bool flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastHttpAccess,_parser,_mediaInfo,path,is_dir,accessPathInvoker,*this);
|
||
if(!flag){
|
||
//此事件无人监听，我们默认都有权限访问
|
||
callback("", nullptr);
|
||
}
|
||
|
||
}
|
||
|
||
void HttpSession::Handle_Req_GET(int64_t &content_len) {
|
||
//先看看是否为WebSocket请求
|
||
if(checkWebSocket()){
|
||
content_len = -1;
|
||
_contentCallBack = [this](const char *data,uint64_t len){
|
||
WebSocketSplitter::decode((uint8_t *)data,len);
|
||
//_contentCallBack是可持续的，后面还要处理后续数据
|
||
return true;
|
||
};
|
||
return;
|
||
}
|
||
|
||
//先看看该http事件是否被拦截
|
||
if(emitHttpEvent(false)){
|
||
return;
|
||
}
|
||
|
||
//再看看是否为http-flv直播请求
|
||
if(checkLiveFlvStream()){
|
||
//若是，return！
|
||
return;
|
||
}
|
||
|
||
//事件未被拦截，则认为是http下载请求
|
||
auto fullUrl = string(HTTP_SCHEMA) + "://" + _parser["Host"] + _parser.FullUrl();
|
||
_mediaInfo.parse(fullUrl);
|
||
|
||
/////////////HTTP连接是否需要被关闭////////////////
|
||
GET_CONFIG(uint32_t,reqCnt,Http::kMaxReqCount);
|
||
GET_CONFIG(bool,enableVhost,General::kEnableVhost);
|
||
GET_CONFIG(string,rootPath,Http::kRootPath);
|
||
string strFile = enableVhost ? rootPath + "/" + _mediaInfo._vhost + _parser.Url() :rootPath + _parser.Url();
|
||
bool bClose = (strcasecmp(_parser["Connection"].data(),"close") == 0) || ( ++_iReqCnt > reqCnt);
|
||
|
||
do{
|
||
//访问的是文件夹
|
||
if (strFile.back() == '/' || File::is_dir(strFile.data())) {
|
||
auto indexFile = findIndexFile(strFile);
|
||
if(!indexFile.empty()){
|
||
//发现该文件夹下有index文件
|
||
strFile = strFile + "/" + indexFile;
|
||
_parser.setUrl(_parser.Url() + "/" + indexFile);
|
||
break;
|
||
}
|
||
string strMeun;
|
||
//生成文件夹菜单索引
|
||
if (!makeMeun(_parser.Url(),strFile,strMeun)) {
|
||
//文件夹不存在
|
||
sendNotFound(bClose);
|
||
throw SockException(bClose ? Err_shutdown : Err_success,"close connection after send 404 not found on folder");
|
||
}
|
||
|
||
//判断是否有权限访问该目录
|
||
canAccessPath(_parser.Url(),true,[this,bClose,strFile,strMeun](const string &errMsg,const HttpServerCookie::Ptr &cookie){
|
||
if(!errMsg.empty()){
|
||
const_cast<string &>(strMeun) = errMsg;
|
||
}
|
||
auto headerOut = makeHttpHeader(bClose,strMeun.size());
|
||
if(cookie){
|
||
headerOut["Set-Cookie"] = cookie->getCookie((*cookie)[kCookiePathKey].get<string>());
|
||
}
|
||
sendResponse(errMsg.empty() ? "200 OK" : "401 Unauthorized" , headerOut, strMeun);
|
||
throw SockException(bClose ? Err_shutdown : Err_success,"close connection after access folder");
|
||
});
|
||
return;
|
||
}
|
||
}while(0);
|
||
|
||
//访问的是文件
|
||
struct stat tFileStat;
|
||
if (0 != stat(strFile.data(), &tFileStat)) {
|
||
//文件不存在
|
||
sendNotFound(bClose);
|
||
throw SockException(bClose ? Err_shutdown : Err_success,"close connection after send 404 not found on file");
|
||
}
|
||
//文件智能指针，防止退出时未关闭
|
||
std::shared_ptr<FILE> pFilePtr(fopen(strFile.data(), "rb"), [](FILE *pFile) {
|
||
if(pFile){
|
||
fclose(pFile);
|
||
}
|
||
});
|
||
|
||
if (!pFilePtr) {
|
||
//打开文件失败
|
||
sendNotFound(bClose);
|
||
throw SockException(bClose ? Err_shutdown : Err_success,"close connection after send 404 not found on open file failed");
|
||
}
|
||
|
||
auto parser = _parser;
|
||
//判断是否有权限访问该文件
|
||
canAccessPath(_parser.Url(),false,[this,parser,tFileStat,pFilePtr,bClose,strFile](const string &errMsg,const HttpServerCookie::Ptr &cookie){
|
||
if(!errMsg.empty()){
|
||
auto headerOut = makeHttpHeader(bClose,errMsg.size());
|
||
if(cookie){
|
||
headerOut["Set-Cookie"] = cookie->getCookie((*cookie)[kCookiePathKey].get<string>());
|
||
}
|
||
sendResponse("401 Unauthorized" , headerOut, errMsg);
|
||
throw SockException(bClose ? Err_shutdown : Err_success,"close connection after access file failed");
|
||
}
|
||
|
||
//判断是不是分节下载
|
||
auto &strRange = parser["Range"];
|
||
int64_t iRangeStart = 0, iRangeEnd = 0;
|
||
iRangeStart = atoll(FindField(strRange.data(), "bytes=", "-").data());
|
||
iRangeEnd = atoll(FindField(strRange.data(), "-", "\r\n").data());
|
||
if (iRangeEnd == 0) {
|
||
iRangeEnd = tFileStat.st_size - 1;
|
||
}
|
||
auto httpHeader = makeHttpHeader(bClose, iRangeEnd - iRangeStart + 1, get_mime_type(strFile.data()));
|
||
const char *pcHttpResult = NULL;
|
||
if (strRange.size() == 0) {
|
||
//全部下载
|
||
pcHttpResult = "200 OK";
|
||
} else {
|
||
//分节下载
|
||
pcHttpResult = "206 Partial Content";
|
||
fseek(pFilePtr.get(), iRangeStart, SEEK_SET);
|
||
//分节下载返回Content-Range头
|
||
httpHeader.emplace("Content-Range",StrPrinter<<"bytes " << iRangeStart << "-" << iRangeEnd << "/" << tFileStat.st_size<< endl);
|
||
}
|
||
|
||
if(cookie){
|
||
httpHeader["Set-Cookie"] = cookie->getCookie((*cookie)[kCookiePathKey].get<string>());
|
||
}
|
||
//先回复HTTP头部分
|
||
sendResponse(pcHttpResult,httpHeader,"");
|
||
|
||
if (iRangeEnd - iRangeStart < 0) {
|
||
//文件是空的!
|
||
throw SockException(bClose ? Err_shutdown : Err_success,"close connection after access file");
|
||
}
|
||
//回复Content部分
|
||
std::shared_ptr<int64_t> piLeft(new int64_t(iRangeEnd - iRangeStart + 1));
|
||
|
||
GET_CONFIG(uint32_t,sendBufSize,Http::kSendBufSize);
|
||
|
||
weak_ptr<HttpSession> weakSelf = dynamic_pointer_cast<HttpSession>(shared_from_this());
|
||
auto onFlush = [pFilePtr,bClose,weakSelf,piLeft]() {
|
||
TimeTicker();
|
||
auto strongSelf = weakSelf.lock();
|
||
while(*piLeft && strongSelf){
|
||
//更新超时计时器
|
||
strongSelf->_ticker.resetTime();
|
||
//从循环池获取一个内存片
|
||
auto sendBuf = strongSelf->obtainBuffer();
|
||
sendBuf->setCapacity(sendBufSize);
|
||
//本次需要读取文件字节数
|
||
int64_t iReq = MIN(sendBufSize,*piLeft);
|
||
//读文件
|
||
int iRead;
|
||
do{
|
||
iRead = fread(sendBuf->data(), 1, iReq, pFilePtr.get());
|
||
}while(-1 == iRead && UV_EINTR == get_uv_error(false));
|
||
//文件剩余字节数
|
||
*piLeft -= iRead;
|
||
|
||
if (iRead < iReq || !*piLeft) {
|
||
//文件读完
|
||
if(iRead > 0) {
|
||
sendBuf->setSize(iRead);
|
||
strongSelf->send(sendBuf);
|
||
}
|
||
|
||
if(strongSelf->isSocketBusy()){
|
||
//套接字忙,我们等待触发下一次onFlush事件
|
||
//待所有数据flush到socket fd再移除onFlush事件监听
|
||
//标记文件读写完毕
|
||
*piLeft = 0;
|
||
return true;
|
||
}
|
||
|
||
//文件全部flush到socket fd，可以直接关闭socket了
|
||
break;
|
||
}
|
||
|
||
//文件还未读完
|
||
sendBuf->setSize(iRead);
|
||
if(strongSelf->send(sendBuf) == -1) {
|
||
//socket已经销毁，不再监听onFlush事件
|
||
return false;
|
||
}
|
||
if(strongSelf->isSocketBusy()){
|
||
//socket忙，那么停止继续写,等待下一次onFlush事件，然后再读文件写socket
|
||
return true;
|
||
}
|
||
//socket还可写，继续写socket
|
||
}
|
||
|
||
if(bClose && strongSelf) {
|
||
//最后一次flush事件，文件也发送完毕了，可以关闭socket了
|
||
strongSelf->shutdown(SockException(Err_shutdown,"read file eof"));
|
||
}
|
||
//不再监听onFlush事件
|
||
return false;
|
||
};
|
||
|
||
//文件下载提升发送性能
|
||
setSocketFlags();
|
||
|
||
onFlush();
|
||
_sock->setOnFlush(onFlush);
|
||
});
|
||
}
|
||
|
||
bool makeMeun(const string &httpPath,const string &strFullPath, string &strRet) {
|
||
string strPathPrefix(strFullPath);
|
||
string last_dir_name;
|
||
if(strPathPrefix.back() == '/'){
|
||
strPathPrefix.pop_back();
|
||
}else{
|
||
last_dir_name = split(strPathPrefix,"/").back();
|
||
}
|
||
|
||
if (!File::is_dir(strPathPrefix.data())) {
|
||
return false;
|
||
}
|
||
stringstream ss;
|
||
ss << "<html>\r\n"
|
||
"<head>\r\n"
|
||
"<title>文件索引</title>\r\n"
|
||
"</head>\r\n"
|
||
"<body>\r\n"
|
||
"<h1>文件索引:";
|
||
|
||
ss << httpPath;
|
||
ss << "</h1>\r\n";
|
||
if (httpPath != "/") {
|
||
ss << "<li><a href=\"";
|
||
ss << "/";
|
||
ss << "\">";
|
||
ss << "根目录";
|
||
ss << "</a></li>\r\n";
|
||
|
||
ss << "<li><a href=\"";
|
||
if(!last_dir_name.empty()){
|
||
ss << "./";
|
||
}else{
|
||
ss << "../";
|
||
}
|
||
ss << "\">";
|
||
ss << "上级目录";
|
||
ss << "</a></li>\r\n";
|
||
}
|
||
|
||
DIR *pDir;
|
||
dirent *pDirent;
|
||
if ((pDir = opendir(strPathPrefix.data())) == NULL) {
|
||
return false;
|
||
}
|
||
set<string> setFile;
|
||
while ((pDirent = readdir(pDir)) != NULL) {
|
||
if (File::is_special_dir(pDirent->d_name)) {
|
||
continue;
|
||
}
|
||
if(pDirent->d_name[0] == '.'){
|
||
continue;
|
||
}
|
||
setFile.emplace(pDirent->d_name);
|
||
}
|
||
int i = 0;
|
||
for(auto &strFile :setFile ){
|
||
string strAbsolutePath = strPathPrefix + "/" + strFile;
|
||
bool isDir = File::is_dir(strAbsolutePath.data());
|
||
ss << "<li><span>" << i++ << "</span>\t";
|
||
ss << "<a href=\"";
|
||
if(!last_dir_name.empty()){
|
||
ss << last_dir_name << "/" << strFile;
|
||
}else{
|
||
ss << strFile;
|
||
}
|
||
|
||
if(isDir){
|
||
ss << "/";
|
||
}
|
||
ss << "\">";
|
||
ss << strFile;
|
||
if (isDir) {
|
||
ss << "/</a></li>\r\n";
|
||
continue;
|
||
}
|
||
//是文件
|
||
struct stat fileData;
|
||
if (0 == stat(strAbsolutePath.data(), &fileData)) {
|
||
auto &fileSize = fileData.st_size;
|
||
if (fileSize < 1024) {
|
||
ss << " (" << fileData.st_size << "B)" << endl;
|
||
} else if (fileSize < 1024 * 1024) {
|
||
ss << fixed << setprecision(2) << " (" << fileData.st_size / 1024.0 << "KB)";
|
||
} else if (fileSize < 1024 * 1024 * 1024) {
|
||
ss << fixed << setprecision(2) << " (" << fileData.st_size / 1024 / 1024.0 << "MB)";
|
||
} else {
|
||
ss << fixed << setprecision(2) << " (" << fileData.st_size / 1024 / 1024 / 1024.0 << "GB)";
|
||
}
|
||
}
|
||
ss << "</a></li>\r\n";
|
||
}
|
||
closedir(pDir);
|
||
ss << "<ul>\r\n";
|
||
ss << "</ul>\r\n</body></html>";
|
||
ss.str().swap(strRet);
|
||
return true;
|
||
}
|
||
|
||
void HttpSession::sendResponse(const char* pcStatus, const KeyValue& header, const string& strContent) {
|
||
_StrPrinter printer;
|
||
printer << "HTTP/1.1 " << pcStatus << "\r\n";
|
||
for (auto &pr : header) {
|
||
printer << pr.first << ": " << pr.second << "\r\n";
|
||
}
|
||
printer << "\r\n" << strContent;
|
||
auto strSend = printer << endl;
|
||
send(strSend);
|
||
_ticker.resetTime();
|
||
}
|
||
|
||
HttpSession::KeyValue HttpSession::makeHttpHeader(bool bClose, int64_t iContentSize,const char* pcContentType) {
|
||
KeyValue headerOut;
|
||
GET_CONFIG(string,charSet,Http::kCharSet);
|
||
GET_CONFIG(uint32_t,keepAliveSec,Http::kKeepAliveSecond);
|
||
GET_CONFIG(uint32_t,reqCnt,Http::kMaxReqCount);
|
||
|
||
headerOut.emplace("Date", dateStr());
|
||
headerOut.emplace("Server", SERVER_NAME);
|
||
headerOut.emplace("Connection", bClose ? "close" : "keep-alive");
|
||
if(!bClose){
|
||
headerOut.emplace("Keep-Alive",StrPrinter << "timeout=" << keepAliveSec << ", max=" << reqCnt << endl);
|
||
}
|
||
if(pcContentType){
|
||
auto strContentType = StrPrinter << pcContentType << "; charset=" << charSet << endl;
|
||
headerOut.emplace("Content-Type",strContentType);
|
||
}
|
||
if(iContentSize > 0){
|
||
headerOut.emplace("Content-Length", StrPrinter<<iContentSize<<endl);
|
||
}
|
||
|
||
if(!_origin.empty()){
|
||
headerOut.emplace("Access-Control-Allow-Origin",_origin);
|
||
headerOut.emplace("Access-Control-Allow-Credentials", "true");
|
||
}
|
||
return headerOut;
|
||
}
|
||
|
||
string HttpSession::urlDecode(const string &str){
|
||
auto ret = strCoding::UrlDecode(str);
|
||
#ifdef _WIN32
|
||
GET_CONFIG(string,charSet,Http::kCharSet);
|
||
bool isGb2312 = !strcasecmp(charSet.data(), "gb2312");
|
||
if (isGb2312) {
|
||
ret = strCoding::UTF8ToGB2312(ret);
|
||
}
|
||
#endif // _WIN32
|
||
return ret;
|
||
}
|
||
|
||
void HttpSession::urlDecode(Parser &parser){
|
||
parser.setUrl(urlDecode(parser.Url()));
|
||
for(auto &pr : _parser.getUrlArgs()){
|
||
const_cast<string &>(pr.second) = urlDecode(pr.second);
|
||
}
|
||
}
|
||
|
||
bool HttpSession::emitHttpEvent(bool doInvoke){
|
||
///////////////////是否断开本链接///////////////////////
|
||
GET_CONFIG(uint32_t,reqCnt,Http::kMaxReqCount);
|
||
|
||
bool bClose = (strcasecmp(_parser["Connection"].data(),"close") == 0) || ( ++_iReqCnt > reqCnt);
|
||
/////////////////////异步回复Invoker///////////////////////////////
|
||
weak_ptr<HttpSession> weakSelf = dynamic_pointer_cast<HttpSession>(shared_from_this());
|
||
HttpResponseInvoker invoker = [weakSelf,bClose](const string &codeOut, const KeyValue &headerOut, const string &contentOut){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf) {
|
||
return;
|
||
}
|
||
strongSelf->async([weakSelf,bClose,codeOut,headerOut,contentOut]() {
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf) {
|
||
return;
|
||
}
|
||
strongSelf->responseDelay(bClose,codeOut,headerOut,contentOut);
|
||
if(bClose){
|
||
strongSelf->shutdown(SockException(Err_shutdown,"Connection: close"));
|
||
}
|
||
});
|
||
};
|
||
///////////////////广播HTTP事件///////////////////////////
|
||
bool consumed = false;//该事件是否被消费
|
||
NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastHttpRequest,_parser,invoker,consumed,*this);
|
||
if(!consumed && doInvoke){
|
||
//该事件无人消费，所以返回404
|
||
invoker("404 Not Found",KeyValue(),"");
|
||
if(bClose){
|
||
//close类型，回复完毕，关闭连接
|
||
shutdown(SockException(Err_shutdown,"404 Not Found"));
|
||
}
|
||
}
|
||
return consumed;
|
||
}
|
||
|
||
void HttpSession::Handle_Req_POST(int64_t &content_len) {
|
||
GET_CONFIG(uint64_t,maxReqSize,Http::kMaxReqSize);
|
||
GET_CONFIG(int,maxReqCnt,Http::kMaxReqCount);
|
||
|
||
int64_t totalContentLen = _parser["Content-Length"].empty() ? -1 : atoll(_parser["Content-Length"].data());
|
||
|
||
if(totalContentLen == 0){
|
||
//content为空
|
||
//emitHttpEvent内部会选择是否关闭连接
|
||
emitHttpEvent(true);
|
||
return;
|
||
}
|
||
|
||
//根据Content-Length设置接收缓存大小
|
||
if(totalContentLen > 0){
|
||
_sock->setReadBuffer(std::make_shared<BufferRaw>(MIN(totalContentLen + 1,256 * 1024)));
|
||
}else{
|
||
//不定长度的Content-Length
|
||
_sock->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
|
||
}
|
||
|
||
if(totalContentLen > 0 && totalContentLen < maxReqSize ){
|
||
//返回固定长度的content
|
||
content_len = totalContentLen;
|
||
auto parserCopy = _parser;
|
||
_contentCallBack = [this,parserCopy](const char *data,uint64_t len){
|
||
//恢复http头
|
||
_parser = parserCopy;
|
||
//设置content
|
||
_parser.setContent(string(data,len));
|
||
//触发http事件，emitHttpEvent内部会选择是否关闭连接
|
||
emitHttpEvent(true);
|
||
//清空数据,节省内存
|
||
_parser.Clear();
|
||
//content已经接收完毕
|
||
return false;
|
||
};
|
||
}else{
|
||
//返回不固定长度的content
|
||
content_len = -1;
|
||
auto parserCopy = _parser;
|
||
std::shared_ptr<uint64_t> recvedContentLen = std::make_shared<uint64_t>(0);
|
||
bool bClose = (strcasecmp(_parser["Connection"].data(),"close") == 0) || ( ++_iReqCnt > maxReqCnt);
|
||
|
||
_contentCallBack = [this,parserCopy,totalContentLen,recvedContentLen,bClose](const char *data,uint64_t len){
|
||
*(recvedContentLen) += len;
|
||
|
||
onRecvUnlimitedContent(parserCopy,data,len,totalContentLen,*(recvedContentLen));
|
||
|
||
if(*(recvedContentLen) < totalContentLen){
|
||
//数据还没接收完毕
|
||
//_contentCallBack是可持续的，后面还要处理后续content数据
|
||
return true;
|
||
}
|
||
|
||
//数据接收完毕
|
||
if(!bClose){
|
||
//keep-alive类型连接
|
||
//content接收完毕，后续都是http header
|
||
setContentLen(0);
|
||
//content已经接收完毕
|
||
return false;
|
||
}
|
||
|
||
//连接类型是close类型，收完content就关闭连接
|
||
shutdown(SockException(Err_shutdown,"recv http content completed"));
|
||
//content已经接收完毕
|
||
return false ;
|
||
};
|
||
}
|
||
//有后续content数据要处理,暂时不关闭连接
|
||
}
|
||
void HttpSession::responseDelay(bool bClose,
|
||
const string &codeOut,
|
||
const KeyValue &headerOut,
|
||
const string &contentOut){
|
||
if(codeOut.empty()){
|
||
sendNotFound(bClose);
|
||
return;
|
||
}
|
||
auto headerOther = makeHttpHeader(bClose,contentOut.size(),"text/plain");
|
||
for (auto &pr : headerOther){
|
||
//添加默认http头，默认http头不能覆盖用户自定义的头
|
||
const_cast<KeyValue &>(headerOut).emplace(pr.first,pr.second);
|
||
}
|
||
sendResponse(codeOut.data(), headerOut, contentOut);
|
||
}
|
||
|
||
void HttpSession::sendNotFound(bool bClose) {
|
||
GET_CONFIG(string,notFound,Http::kNotFound);
|
||
sendResponse("404 Not Found", makeHttpHeader(bClose, notFound.size()), notFound);
|
||
}
|
||
|
||
void HttpSession::setSocketFlags(){
|
||
GET_CONFIG(bool,ultraLowDelay,General::kUltraLowDelay);
|
||
if(!ultraLowDelay) {
|
||
//推流模式下，关闭TCP_NODELAY会增加推流端的延时，但是服务器性能将提高
|
||
SockUtil::setNoDelay(_sock->rawFD(), false);
|
||
//播放模式下，开启MSG_MORE会增加延时，但是能提高发送性能
|
||
(*this) << SocketFlags(SOCKET_DEFAULE_FLAGS | FLAG_MORE);
|
||
}
|
||
}
|
||
|
||
void HttpSession::onWrite(const Buffer::Ptr &buffer) {
|
||
_ticker.resetTime();
|
||
if(!_flv_over_websocket){
|
||
_ui64TotalBytes += buffer->size();
|
||
send(buffer);
|
||
return;
|
||
}
|
||
|
||
WebSocketHeader header;
|
||
header._fin = true;
|
||
header._reserved = 0;
|
||
header._opcode = WebSocketHeader::BINARY;
|
||
header._mask_flag = false;
|
||
WebSocketSplitter::encode(header,buffer);
|
||
}
|
||
|
||
void HttpSession::onWebSocketEncodeData(const Buffer::Ptr &buffer){
|
||
_ui64TotalBytes += buffer->size();
|
||
send(buffer);
|
||
}
|
||
|
||
void HttpSession::onDetach() {
|
||
shutdown(SockException(Err_shutdown,"rtmp ring buffer detached"));
|
||
}
|
||
|
||
std::shared_ptr<FlvMuxer> HttpSession::getSharedPtr(){
|
||
return dynamic_pointer_cast<FlvMuxer>(shared_from_this());
|
||
}
|
||
|
||
} /* namespace mediakit */
|