634 lines
17 KiB
C++
634 lines
17 KiB
C++
//
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// Copyright (c) 2013-2025 The SRS Authors
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//
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// SPDX-License-Identifier: MIT
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//
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#include <srs_protocol_conn.hpp>
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#include <srs_kernel_buffer.hpp>
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#include <srs_kernel_error.hpp>
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#include <srs_kernel_log.hpp>
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#include <srs_kernel_utility.hpp>
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#include <srs_protocol_io.hpp>
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#include <algorithm>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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using namespace std;
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ISrsConnection::ISrsConnection()
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{
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}
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ISrsConnection::~ISrsConnection()
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{
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}
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ISrsExpire::ISrsExpire()
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{
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}
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ISrsExpire::~ISrsExpire()
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{
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}
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SrsTcpConnection::SrsTcpConnection(srs_netfd_t c)
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{
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stfd_ = c;
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skt_ = new SrsStSocket(c);
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}
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SrsTcpConnection::~SrsTcpConnection()
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{
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srs_freep(skt_);
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srs_close_stfd(stfd_);
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}
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srs_error_t SrsTcpConnection::set_tcp_nodelay(bool v)
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{
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srs_error_t err = srs_success;
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int r0 = 0;
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socklen_t nb_v = sizeof(int);
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int fd = srs_netfd_fileno(stfd_);
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int ov = 0;
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if ((r0 = getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &ov, &nb_v)) != 0) {
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return srs_error_new(ERROR_SOCKET_NO_NODELAY, "getsockopt fd=%d, r0=%d", fd, r0);
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}
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#ifndef SRS_PERF_TCP_NODELAY
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srs_warn("ignore TCP_NODELAY, fd=%d, ov=%d", fd, ov);
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return err;
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#endif
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int iv = (v ? 1 : 0);
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if ((r0 = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &iv, nb_v)) != 0) {
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return srs_error_new(ERROR_SOCKET_NO_NODELAY, "setsockopt fd=%d, r0=%d", fd, r0);
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}
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if ((r0 = getsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &iv, &nb_v)) != 0) {
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return srs_error_new(ERROR_SOCKET_NO_NODELAY, "getsockopt fd=%d, r0=%d", fd, r0);
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}
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srs_trace("set fd=%d TCP_NODELAY %d=>%d", fd, ov, iv);
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return err;
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}
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srs_error_t SrsTcpConnection::set_socket_buffer(srs_utime_t buffer_v)
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{
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srs_error_t err = srs_success;
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int r0 = 0;
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int fd = srs_netfd_fileno(stfd_);
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socklen_t nb_v = sizeof(int);
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int ov = 0;
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if ((r0 = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &ov, &nb_v)) != 0) {
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return srs_error_new(ERROR_SOCKET_SNDBUF, "getsockopt fd=%d, r0=%d", fd, r0);
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}
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#ifndef SRS_PERF_MW_SO_SNDBUF
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srs_warn("ignore SO_SNDBUF, fd=%d, ov=%d", fd, ov);
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return err;
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#endif
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// the bytes:
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// 4KB=4096, 8KB=8192, 16KB=16384, 32KB=32768, 64KB=65536,
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// 128KB=131072, 256KB=262144, 512KB=524288
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// the buffer should set to sleep*kbps/8,
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// for example, your system delivery stream in 1000kbps,
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// sleep 800ms for small bytes, the buffer should set to:
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// 800*1000/8=100000B(about 128KB).
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// other examples:
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// 2000*3000/8=750000B(about 732KB).
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// 2000*5000/8=1250000B(about 1220KB).
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int kbps = 4000;
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int iv = srsu2ms(buffer_v) * kbps / 8;
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// socket send buffer, system will double it.
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iv = iv / 2;
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// override the send buffer by macro.
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#ifdef SRS_PERF_SO_SNDBUF_SIZE
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iv = SRS_PERF_SO_SNDBUF_SIZE / 2;
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#endif
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// set the socket send buffer when required larger buffer
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if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &iv, nb_v) < 0) {
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return srs_error_new(ERROR_SOCKET_SNDBUF, "setsockopt fd=%d, r0=%d", fd, r0);
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}
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if ((r0 = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &iv, &nb_v)) != 0) {
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return srs_error_new(ERROR_SOCKET_SNDBUF, "getsockopt fd=%d, r0=%d", fd, r0);
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}
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srs_trace("set fd=%d, SO_SNDBUF=%d=>%d, buffer=%dms", fd, ov, iv, srsu2ms(buffer_v));
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return err;
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}
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void SrsTcpConnection::set_recv_timeout(srs_utime_t tm)
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{
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skt_->set_recv_timeout(tm);
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}
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srs_utime_t SrsTcpConnection::get_recv_timeout()
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{
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return skt_->get_recv_timeout();
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}
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srs_error_t SrsTcpConnection::read_fully(void *buf, size_t size, ssize_t *nread)
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{
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return skt_->read_fully(buf, size, nread);
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}
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int64_t SrsTcpConnection::get_recv_bytes()
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{
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return skt_->get_recv_bytes();
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}
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int64_t SrsTcpConnection::get_send_bytes()
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{
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return skt_->get_send_bytes();
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}
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srs_error_t SrsTcpConnection::read(void *buf, size_t size, ssize_t *nread)
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{
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return skt_->read(buf, size, nread);
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}
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void SrsTcpConnection::set_send_timeout(srs_utime_t tm)
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{
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skt_->set_send_timeout(tm);
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}
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srs_utime_t SrsTcpConnection::get_send_timeout()
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{
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return skt_->get_send_timeout();
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}
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srs_error_t SrsTcpConnection::write(void *buf, size_t size, ssize_t *nwrite)
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{
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return skt_->write(buf, size, nwrite);
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}
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srs_error_t SrsTcpConnection::writev(const iovec *iov, int iov_size, ssize_t *nwrite)
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{
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return skt_->writev(iov, iov_size, nwrite);
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}
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SrsBufferedReadWriter::SrsBufferedReadWriter(ISrsProtocolReadWriter *io)
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{
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io_ = io;
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buf_ = NULL;
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}
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SrsBufferedReadWriter::~SrsBufferedReadWriter()
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{
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srs_freep(buf_);
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}
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srs_error_t SrsBufferedReadWriter::peek(char *buf, int *size)
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{
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srs_error_t err = srs_success;
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if ((err = reload_buffer()) != srs_success) {
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return srs_error_wrap(err, "reload buffer");
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}
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int nn = srs_min(buf_->left(), *size);
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*size = nn;
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if (nn) {
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memcpy(buf, buf_->head(), nn);
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}
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return err;
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}
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srs_error_t SrsBufferedReadWriter::reload_buffer()
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{
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srs_error_t err = srs_success;
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if (buf_ && !buf_->empty()) {
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return err;
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}
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// We use read_fully to always full fill the cache, to avoid peeking failed.
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ssize_t nread = 0;
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if ((err = io_->read_fully(cache_, sizeof(cache_), &nread)) != srs_success) {
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return srs_error_wrap(err, "read");
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}
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srs_freep(buf_);
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buf_ = new SrsBuffer(cache_, nread);
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return err;
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}
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srs_error_t SrsBufferedReadWriter::read(void *buf, size_t size, ssize_t *nread)
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{
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if (!buf_ || buf_->empty()) {
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return io_->read(buf, size, nread);
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}
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int nn = srs_min(buf_->left(), (int)size);
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*nread = nn;
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if (nn) {
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buf_->read_bytes((char *)buf, nn);
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}
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return srs_success;
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}
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srs_error_t SrsBufferedReadWriter::read_fully(void *buf, size_t size, ssize_t *nread)
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{
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if (!buf_ || buf_->empty()) {
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return io_->read_fully(buf, size, nread);
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}
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int nn = srs_min(buf_->left(), (int)size);
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if (nn) {
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buf_->read_bytes((char *)buf, nn);
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}
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int left = size - nn;
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*nread = size;
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if (left) {
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return io_->read_fully((char *)buf + nn, left, NULL);
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}
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return srs_success;
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}
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void SrsBufferedReadWriter::set_recv_timeout(srs_utime_t tm)
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{
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return io_->set_recv_timeout(tm);
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}
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srs_utime_t SrsBufferedReadWriter::get_recv_timeout()
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{
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return io_->get_recv_timeout();
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}
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int64_t SrsBufferedReadWriter::get_recv_bytes()
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{
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return io_->get_recv_bytes();
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}
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int64_t SrsBufferedReadWriter::get_send_bytes()
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{
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return io_->get_send_bytes();
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}
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void SrsBufferedReadWriter::set_send_timeout(srs_utime_t tm)
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{
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return io_->set_send_timeout(tm);
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}
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srs_utime_t SrsBufferedReadWriter::get_send_timeout()
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{
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return io_->get_send_timeout();
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}
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srs_error_t SrsBufferedReadWriter::write(void *buf, size_t size, ssize_t *nwrite)
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{
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return io_->write(buf, size, nwrite);
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}
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srs_error_t SrsBufferedReadWriter::writev(const iovec *iov, int iov_size, ssize_t *nwrite)
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{
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return io_->writev(iov, iov_size, nwrite);
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}
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ISrsSslConnection::ISrsSslConnection()
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{
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}
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ISrsSslConnection::~ISrsSslConnection()
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{
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}
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SrsSslConnection::SrsSslConnection(ISrsProtocolReadWriter *c)
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{
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transport_ = c;
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ssl_ctx_ = NULL;
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ssl_ = NULL;
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}
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SrsSslConnection::~SrsSslConnection()
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{
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if (ssl_) {
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// this function will free bio_in_ and bio_out_
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SSL_free(ssl_);
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ssl_ = NULL;
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}
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if (ssl_ctx_) {
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SSL_CTX_free(ssl_ctx_);
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ssl_ctx_ = NULL;
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}
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}
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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srs_error_t SrsSslConnection::handshake(string key_file, string crt_file)
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{
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srs_error_t err = srs_success;
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// For HTTPS, try to connect over security transport.
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#if (OPENSSL_VERSION_NUMBER < 0x10002000L) // v1.0.2
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ssl_ctx_ = SSL_CTX_new(TLS_method());
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#else
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ssl_ctx_ = SSL_CTX_new(TLSv1_2_method());
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#endif
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SSL_CTX_set_verify(ssl_ctx_, SSL_VERIFY_NONE, NULL);
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srs_assert(SSL_CTX_set_cipher_list(ssl_ctx_, "ALL") == 1);
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// TODO: Setup callback, see SSL_set_ex_data and SSL_set_info_callback
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if ((ssl_ = SSL_new(ssl_ctx_)) == NULL) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "SSL_new ssl");
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}
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if ((bio_in_ = BIO_new(BIO_s_mem())) == NULL) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_new in");
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}
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if ((bio_out_ = BIO_new(BIO_s_mem())) == NULL) {
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BIO_free(bio_in_);
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_new out");
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}
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SSL_set_bio(ssl_, bio_in_, bio_out_);
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// SSL setup active, as server role.
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SSL_set_accept_state(ssl_);
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SSL_set_mode(ssl_, SSL_MODE_ENABLE_PARTIAL_WRITE);
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uint8_t *data = NULL;
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int r0, r1, size;
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// Setup the key and cert file for server.
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if ((r0 = SSL_use_certificate_chain_file(ssl_, crt_file.c_str())) != 1) {
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return srs_error_new(ERROR_TLS_KEY_CRT, "use cert %s", crt_file.c_str());
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}
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if ((r0 = SSL_use_RSAPrivateKey_file(ssl_, key_file.c_str(), SSL_FILETYPE_PEM)) != 1) {
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return srs_error_new(ERROR_TLS_KEY_CRT, "use key %s", key_file.c_str());
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}
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if ((r0 = SSL_check_private_key(ssl_)) != 1) {
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return srs_error_new(ERROR_TLS_KEY_CRT, "check key %s with cert %s",
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key_file.c_str(), crt_file.c_str());
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}
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srs_info("ssl: use key %s and cert %s", key_file.c_str(), crt_file.c_str());
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// Receive ClientHello
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while (true) {
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char buf[1024];
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ssize_t nn = 0;
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if ((err = transport_->read(buf, sizeof(buf), &nn)) != srs_success) {
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return srs_error_wrap(err, "handshake: read");
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}
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if ((r0 = BIO_write(bio_in_, buf, nn)) <= 0) {
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// TODO: 0 or -1 maybe block, use BIO_should_retry to check.
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_write r0=%d, data=%p, size=%d", r0, buf, nn);
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}
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r0 = SSL_do_handshake(ssl_);
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r1 = SSL_get_error(ssl_, r0);
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ERR_clear_error();
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if (r0 != -1 || r1 != SSL_ERROR_WANT_READ) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "handshake r0=%d, r1=%d", r0, r1);
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}
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if ((size = BIO_get_mem_data(bio_out_, &data)) > 0) {
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// OK, reset it for the next write.
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if ((r0 = BIO_reset(bio_in_)) != 1) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_reset r0=%d", r0);
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}
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break;
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}
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}
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srs_info("tls: ClientHello done");
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// Send ServerHello, Certificate, Server Key Exchange, Server Hello Done
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size = BIO_get_mem_data(bio_out_, &data);
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if (!data || size <= 0) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "handshake data=%p, size=%d", data, size);
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}
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if ((err = transport_->write(data, size, NULL)) != srs_success) {
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return srs_error_wrap(err, "handshake: write data=%p, size=%d", data, size);
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}
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if ((r0 = BIO_reset(bio_out_)) != 1) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_reset r0=%d", r0);
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}
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srs_info("tls: ServerHello done");
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// Receive Client Key Exchange, Change Cipher Spec, Encrypted Handshake Message
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while (true) {
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char buf[1024];
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ssize_t nn = 0;
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if ((err = transport_->read(buf, sizeof(buf), &nn)) != srs_success) {
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return srs_error_wrap(err, "handshake: read");
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}
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if ((r0 = BIO_write(bio_in_, buf, nn)) <= 0) {
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// TODO: 0 or -1 maybe block, use BIO_should_retry to check.
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_write r0=%d, data=%p, size=%d", r0, buf, nn);
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}
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r0 = SSL_do_handshake(ssl_);
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r1 = SSL_get_error(ssl_, r0);
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ERR_clear_error();
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if (r0 == 1 && r1 == SSL_ERROR_NONE) {
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break;
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}
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if (r0 != -1 || r1 != SSL_ERROR_WANT_READ) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "handshake r0=%d, r1=%d", r0, r1);
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}
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if ((size = BIO_get_mem_data(bio_out_, &data)) > 0) {
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// OK, reset it for the next write.
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if ((r0 = BIO_reset(bio_in_)) != 1) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_reset r0=%d", r0);
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}
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break;
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}
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}
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srs_info("tls: Client done");
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// Send New Session Ticket, Change Cipher Spec, Encrypted Handshake Message
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size = BIO_get_mem_data(bio_out_, &data);
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if (!data || size <= 0) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "handshake data=%p, size=%d", data, size);
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}
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if ((err = transport_->write(data, size, NULL)) != srs_success) {
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return srs_error_wrap(err, "handshake: write data=%p, size=%d", data, size);
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}
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if ((r0 = BIO_reset(bio_out_)) != 1) {
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return srs_error_new(ERROR_TLS_HANDSHAKE, "BIO_reset r0=%d", r0);
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}
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srs_info("tls: Server done");
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return err;
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}
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#pragma GCC diagnostic pop
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void SrsSslConnection::set_recv_timeout(srs_utime_t tm)
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{
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transport_->set_recv_timeout(tm);
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}
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srs_utime_t SrsSslConnection::get_recv_timeout()
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{
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return transport_->get_recv_timeout();
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}
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srs_error_t SrsSslConnection::read_fully(void *buf, size_t size, ssize_t *nread)
|
|
{
|
|
srs_error_t err = srs_success;
|
|
ssize_t nb = 0;
|
|
void *p = buf;
|
|
while ((size_t)nb < size) {
|
|
ssize_t once_nb = 0;
|
|
if ((err = read((char *)p + nb, size - nb, &once_nb)) != srs_success) {
|
|
return srs_error_wrap(err, "tls: read");
|
|
}
|
|
nb += once_nb;
|
|
}
|
|
|
|
if (nread) {
|
|
*nread = nb;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
int64_t SrsSslConnection::get_recv_bytes()
|
|
{
|
|
return transport_->get_recv_bytes();
|
|
}
|
|
|
|
int64_t SrsSslConnection::get_send_bytes()
|
|
{
|
|
return transport_->get_send_bytes();
|
|
}
|
|
|
|
srs_error_t SrsSslConnection::read(void *plaintext, size_t nn_plaintext, ssize_t *nread)
|
|
{
|
|
srs_error_t err = srs_success;
|
|
|
|
while (true) {
|
|
int r0 = SSL_read(ssl_, plaintext, nn_plaintext);
|
|
int r1 = SSL_get_error(ssl_, r0);
|
|
ERR_clear_error();
|
|
int r2 = BIO_ctrl_pending(bio_in_);
|
|
int r3 = SSL_is_init_finished(ssl_);
|
|
|
|
// Peer gracefully close.
|
|
if (r0 == 0 && r1 == SSL_ERROR_ZERO_RETURN) {
|
|
return srs_error_new(ERROR_SOCKET_READ, "SSL_read r0=%d, r1=%d, r2=%d, r3=%d",
|
|
r0, r1, r2, r3);
|
|
}
|
|
|
|
// OK, got data.
|
|
if (r0 > 0) {
|
|
srs_assert(r0 <= (int)nn_plaintext);
|
|
if (nread) {
|
|
*nread = r0;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
// Need to read more data to feed SSL.
|
|
if (r0 == -1 && r1 == SSL_ERROR_WANT_READ) {
|
|
// TODO: Can we avoid copy?
|
|
int nn_cipher = nn_plaintext;
|
|
SrsUniquePtr<char[]> cipher(new char[nn_cipher]);
|
|
|
|
// Read the cipher from SSL.
|
|
ssize_t nn = 0;
|
|
if ((err = transport_->read(cipher.get(), nn_cipher, &nn)) != srs_success) {
|
|
return srs_error_wrap(err, "tls: read");
|
|
}
|
|
|
|
int r0 = BIO_write(bio_in_, cipher.get(), nn);
|
|
if (r0 <= 0) {
|
|
// TODO: 0 or -1 maybe block, use BIO_should_retry to check.
|
|
return srs_error_new(ERROR_TLS_READ, "BIO_write r0=%d, cipher=%p, size=%d", r0, cipher.get(), nn);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// Fail for error.
|
|
if (r0 <= 0) {
|
|
return srs_error_new(ERROR_TLS_READ, "SSL_read r0=%d, r1=%d, r2=%d, r3=%d",
|
|
r0, r1, r2, r3);
|
|
}
|
|
}
|
|
}
|
|
|
|
void SrsSslConnection::set_send_timeout(srs_utime_t tm)
|
|
{
|
|
transport_->set_send_timeout(tm);
|
|
}
|
|
|
|
srs_utime_t SrsSslConnection::get_send_timeout()
|
|
{
|
|
return transport_->get_send_timeout();
|
|
}
|
|
|
|
srs_error_t SrsSslConnection::write(void *plaintext, size_t nn_plaintext, ssize_t *nwrite)
|
|
{
|
|
srs_error_t err = srs_success;
|
|
|
|
for (char *p = (char *)plaintext; p < (char *)plaintext + nn_plaintext;) {
|
|
int left = (int)nn_plaintext - (p - (char *)plaintext);
|
|
int r0 = SSL_write(ssl_, (const void *)p, left);
|
|
int r1 = SSL_get_error(ssl_, r0);
|
|
ERR_clear_error();
|
|
if (r0 <= 0) {
|
|
return srs_error_new(ERROR_TLS_WRITE, "tls: write data=%p, size=%d, r0=%d, r1=%d", p, left, r0, r1);
|
|
}
|
|
|
|
// Move p to the next writing position.
|
|
p += r0;
|
|
if (nwrite) {
|
|
*nwrite += (ssize_t)r0;
|
|
}
|
|
|
|
uint8_t *data = NULL;
|
|
int size = BIO_get_mem_data(bio_out_, &data);
|
|
if ((err = transport_->write(data, size, NULL)) != srs_success) {
|
|
return srs_error_wrap(err, "tls: write data=%p, size=%d", data, size);
|
|
}
|
|
if ((r0 = BIO_reset(bio_out_)) != 1) {
|
|
return srs_error_new(ERROR_TLS_WRITE, "BIO_reset r0=%d", r0);
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
srs_error_t SrsSslConnection::writev(const iovec *iov, int iov_size, ssize_t *nwrite)
|
|
{
|
|
srs_error_t err = srs_success;
|
|
|
|
for (int i = 0; i < iov_size; i++) {
|
|
const iovec *p = iov + i;
|
|
if ((err = write((void *)p->iov_base, (size_t)p->iov_len, nwrite)) != srs_success) {
|
|
return srs_error_wrap(err, "write iov #%d base=%p, size=%d", i, p->iov_base, p->iov_len);
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|