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https://github.com/ZLMediaKit/ZLMediaKit.git
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246 lines
8.6 KiB
C++
246 lines
8.6 KiB
C++
#include "Common/config.h"
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#include "Http/HttpSession.h"
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#include "Network/TcpServer.h"
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#include "Rtmp/RtmpSession.h"
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#include "Rtp/RtpProcess.h"
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#include "Rtsp/RtspSession.h"
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#include "Util/logger.h"
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#include "Util/util.h"
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#include <iostream>
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#include <map>
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#include <pcap.h>
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using namespace std;
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using namespace toolkit;
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using namespace mediakit;
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/* 以太网帧头部 */
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struct sniff_ethernet {
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#define ETHER_ADDR_LEN 6
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u_char ether_dhost[ETHER_ADDR_LEN]; /* 目的主机的地址 */
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u_char ether_shost[ETHER_ADDR_LEN]; /* 源主机的地址 */
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u_short ether_unused;
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u_short ether_type; /* IP：0x0800;IPV6:0x86DD; ARP:0x0806;RARP:0x8035 */
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};
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#define ETHERTYPE_IPV4 (0x0800)
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#define ETHERTYPE_IPV6 (0x86DD)
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#define ETHERTYPE_ARP (0x0806)
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#define ETHERTYPE_RARP (0x8035)
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/* IP数据包的头部 */
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struct sniff_ip {
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#if BYTE_ORDER == LITTLE_ENDIAN
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u_int ip_hl : 4, /* 头部长度 */
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ip_v : 4; /* 版本号 */
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#if BYTE_ORDER == BIG_ENDIAN
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u_int ip_v : 4, /* 版本号 */
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ip_hl : 4; /* 头部长度 */
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#endif
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#endif /* not _IP_VHL */
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u_char ip_tos; /* 服务的类型 */
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u_short ip_len; /* 总长度 */
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u_short ip_id; /*包标志号 */
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u_char ip_flag;
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u_char ip_off; /* 碎片偏移 */
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#define IP_RF 0x8000 /* 保留的碎片标志 */
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#define IP_DF 0x4000 /* dont fragment flag */
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#define IP_MF 0x2000 /* 多碎片标志*/
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#define IP_OFFMASK 0x1fff /*分段位 */
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u_char ip_ttl; /* 数据包的生存时间 */
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u_char ip_p; /* 所使用的协议:1 ICMP;2 IGMP;4 IP;6 TCP;17 UDP;89 OSPF */
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u_short ip_sum; /* 校验和 */
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struct in_addr ip_src, ip_dst; /* 源地址、目的地址*/
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};
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#define IPTYPE_ICMP (1)
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#define IPTYPE_IGMP (2)
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#define IPTYPE_IP (4)
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#define IPTYPE_TCP (6)
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#define IPTYPE_UDP (17)
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#define IPTYPE_OSPF (89)
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typedef u_int tcp_seq;
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/* TCP 数据包的头部 */
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struct sniff_tcp {
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u_short th_sport; /* 源端口 */
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u_short th_dport; /* 目的端口 */
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tcp_seq th_seq; /* 包序号 */
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tcp_seq th_ack; /* 确认序号 */
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#if BYTE_ORDER == LITTLE_ENDIAN
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u_int th_x2 : 4, /* 还没有用到 */
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th_off : 4; /* 数据偏移 */
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#endif
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#if BYTE_ORDER == BIG_ENDIAN
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u_int th_off : 4, /* 数据偏移*/
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th_x2 : 4; /*还没有用到 */
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#endif
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u_char th_flags;
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#define TH_FIN 0x01
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#define TH_SYN 0x02
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#define TH_RST 0x04
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#define TH_PUSH 0x08
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#define TH_ACK 0x10
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#define TH_URG 0x20
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#define TH_ECE 0x40
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#define TH_CWR 0x80
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#define TH_FLAGS (TH_FINTH_SYNTH_RSTTH_ACKTH_URGTH_ECETH_CWR)
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u_short th_win; /* TCP滑动窗口 */
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u_short th_sum; /* 头部校验和 */
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u_short th_urp; /* 紧急服务位 */
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};
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/* UDP header */
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struct sniff_udp {
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uint16_t sport; /* source port */
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uint16_t dport; /* destination port */
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uint16_t udp_length;
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uint16_t udp_sum; /* checksum */
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};
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struct rtp_stream {
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uint64_t stamp = 0;
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uint64_t stamp_last = 0;
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std::shared_ptr<RtpProcess> rtp_process;
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Socket::Ptr sock;
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struct sockaddr_storage addr;
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};
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static semaphore sem;
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unordered_map<uint32_t, rtp_stream> rtp_streams_map;
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#if defined(ENABLE_RTPPROXY)
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void processRtp(uint32_t stream_id, const char *rtp, int &size, bool is_udp, const EventPoller::Ptr &poller) {
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rtp_stream &stream = rtp_streams_map[stream_id];
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if (!stream.rtp_process) {
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auto process = RtpProcess::createProcess(MediaTuple{DEFAULT_VHOST, kRtpAppName, to_string(stream_id), ""});
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stream.rtp_process = process;
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struct sockaddr_storage addr;
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memset(&addr, 0, sizeof(addr));
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addr.ss_family = AF_INET;
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auto sock = Socket::createSocket(poller);
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stream.sock = sock;
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stream.addr = addr;
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}
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try {
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stream.rtp_process->inputRtp(is_udp, stream.sock, rtp, size, (struct sockaddr *)&stream.addr, &stream.stamp);
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} catch (std::exception &ex) {
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WarnL << "Input rtp failed: " << ex.what();
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return ;
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}
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auto diff = static_cast<int64_t>(stream.stamp - stream.stamp_last);
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if (diff > 0 && diff < 500) {
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usleep(diff * 1000);
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} else {
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usleep(1 * 1000);
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}
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stream.stamp_last = stream.stamp;
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rtp = nullptr;
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size = 0;
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}
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#endif // #if defined(ENABLE_RTPPROXY)
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static bool loadFile(const char *path, const EventPoller::Ptr &poller) {
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char errbuf[PCAP_ERRBUF_SIZE] = {'\0'};
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std::shared_ptr<pcap_t> handle(pcap_open_offline(path, errbuf), [](pcap_t *handle) {
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sem.post();
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if (handle) {
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pcap_close(handle);
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}
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});
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if (!handle) {
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WarnL << "open file failed:" << path << "error: " << errbuf;
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return false;
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}
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auto total_size = std::make_shared<size_t>(0);
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struct pcap_pkthdr header = {0};
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while (true) {
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const u_char *pkt_buff = pcap_next(handle.get(), &header);
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if (!pkt_buff) {
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PrintE("pcapng read over.");
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break;
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}
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struct sniff_ethernet *ethernet = (struct sniff_ethernet *)pkt_buff;
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int eth_len = sizeof(struct sniff_ethernet); // 以太网头的长度
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int ip_len = sizeof(struct sniff_ip); // ip头的长度
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int tcp_len = sizeof(struct sniff_tcp); // tcp头的长度
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int udp_headr_len = sizeof(struct sniff_udp); // udp头的长度
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/*解析网络层 IP头*/
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if (ntohs(ethernet->ether_type) == ETHERTYPE_IPV4) { // IPV4
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struct sniff_ip *ip = (struct sniff_ip *)(pkt_buff + eth_len);
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ip_len = (ip->ip_hl & 0x0f) * 4; // ip头的长度
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unsigned char *saddr = (unsigned char *)&ip->ip_src.s_addr; // 网络字节序转换成主机字节序
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unsigned char *daddr = (unsigned char *)&ip->ip_dst.s_addr;
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/*解析传输层 TCP、UDP、ICMP*/
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if (ip->ip_p == IPTYPE_TCP) { // TCP
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PrintI("ip->proto:TCP "); // 传输层用的哪一个协议
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struct sniff_tcp *tcp = (struct sniff_tcp *)(pkt_buff + eth_len + ip_len);
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PrintI("tcp_sport = %u ", tcp->th_sport);
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PrintI("tcp_dport = %u ", tcp->th_dport);
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for (int i = 0; *(pkt_buff + eth_len + ip_len + tcp_len + i) != '\0'; i++) {
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PrintI("%02x ", *(pkt_buff + eth_len + ip_len + tcp_len + i));
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}
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} else if (ip->ip_p == IPTYPE_UDP) { // UDP
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// PrintI("ip->proto:UDP "); // 传输层用的哪一个协议
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struct sniff_udp *udp = (struct sniff_udp *)(pkt_buff + eth_len + ip_len);
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auto udp_pack_len = ntohs(udp->udp_length);
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uint32_t src_ip = ntohl(ip->ip_src.s_addr);
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uint32_t dst_ip = ntohl(ip->ip_dst.s_addr);
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uint16_t src_port = ntohs(udp->sport);
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uint16_t dst_port = ntohs(udp->dport);
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uint32_t stream_id = (src_ip << 16) + src_port + (dst_ip << 4) + dst_port;
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const char *rtp = reinterpret_cast<const char *>(pkt_buff + eth_len + ip_len + udp_headr_len);
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auto rtp_len = udp_pack_len - udp_headr_len;
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#if defined(ENABLE_RTPPROXY)
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processRtp(stream_id, rtp, rtp_len, true, poller);
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#endif // #if defined(ENABLE_RTPPROXY)
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} else if (ip->ip_p == IPTYPE_ICMP) { // ICMP
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PrintI("ip->proto:CCMP "); // 传输层用的哪一个协议
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} else {
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PrintI("未识别的传输层协议");
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}
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} else if (ntohs(ethernet->ether_type) == ETHERTYPE_IPV6) { // IPV6
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PrintI("It's IPv6! ");
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} else {
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PrintI("既不是IPV4也不是IPV6 ");
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}
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}
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return true;
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}
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int main(int argc, char *argv[]) {
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// 设置日志
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Logger::Instance().add(std::make_shared<ConsoleChannel>("ConsoleChannel"));
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// 启动异步日志线程
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Logger::Instance().setWriter(std::make_shared<AsyncLogWriter>());
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loadIniConfig((exeDir() + "config.ini").data());
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TcpServer::Ptr rtspSrv(new TcpServer());
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TcpServer::Ptr rtmpSrv(new TcpServer());
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TcpServer::Ptr httpSrv(new TcpServer());
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rtspSrv->start<RtspSession>(554); // 默认554
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rtmpSrv->start<RtmpSession>(1935); // 默认1935
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httpSrv->start<HttpSession>(81); // 默认80
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if (argc == 2) {
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auto poller = EventPollerPool::Instance().getPoller();
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poller->async_first([poller, argv]() {
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loadFile(argv[1], poller);
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sem.post();
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});
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sem.wait();
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sleep(1);
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} else {
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ErrorL << "parameter error.";
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}
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return 0;
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} |