1f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* 2f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Dropbear SSH 3f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 4f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Copyright (c) 2002,2003 Matt Johnston 5f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Copyright (c) 2004 by Mihnea Stoenescu 6f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * All rights reserved. 7f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 8f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * Permission is hereby granted, free of charge, to any person obtaining a copy 9f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * of this software and associated documentation files (the "Software"), to deal 10f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * in the Software without restriction, including without limitation the rights 11f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * copies of the Software, and to permit persons to whom the Software is 13f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * furnished to do so, subject to the following conditions: 14f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 15f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * The above copyright notice and this permission notice shall be included in 16f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * all copies or substantial portions of the Software. 17f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * 18f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 24f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * SOFTWARE. */ 25f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 26f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "includes.h" 27f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "ssh.h" 28f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "tcpfwd.h" 29f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "dbutil.h" 30f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "session.h" 31f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "buffer.h" 32f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "packet.h" 33f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "listener.h" 34f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "runopts.h" 35f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 36f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef ENABLE_SVR_REMOTETCPFWD 37f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 38f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_msg_request_success(); 39f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_msg_request_failure(); 40f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int svr_cancelremotetcp(); 41f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int svr_remotetcpreq(); 42f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int newtcpdirect(struct Channel * channel); 43f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 44f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 45f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectconst struct ChanType svr_chan_tcpdirect = { 46f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 1, /* sepfds */ 47f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project "direct-tcpip", 48f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project newtcpdirect, /* init */ 49f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL, /* checkclose */ 50f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL, /* reqhandler */ 51f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL /* closehandler */ 52f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project}; 53f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 54f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic const struct ChanType svr_chan_tcpremote = { 55f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 1, /* sepfds */ 56f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project "forwarded-tcpip", 57f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL, 58f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL, 59f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL, 60f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL 61f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project}; 62f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 63f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* At the moment this is completely used for tcp code (with the name reflecting 64f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * that). If new request types are added, this should be replaced with code 65f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * similar to the request-switching in chansession.c */ 66f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid recv_msg_global_request_remotetcp() { 67f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 68f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* reqname = NULL; 69f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int namelen; 70f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int wantreply = 0; 71f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int ret = DROPBEAR_FAILURE; 72f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 73f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter recv_msg_global_request_remotetcp")) 74f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 75f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (svr_opts.noremotetcp) { 76f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave recv_msg_global_request_remotetcp: remote tcp forwarding disabled")) 77f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 78f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 79f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 80f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project reqname = buf_getstring(ses.payload, &namelen); 81f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project wantreply = buf_getbool(ses.payload); 82f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 83f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (namelen > MAX_NAME_LEN) { 84f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("name len is wrong: %d", namelen)) 85f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 86f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 87f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 88f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (strcmp("tcpip-forward", reqname) == 0) { 89f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ret = svr_remotetcpreq(); 90f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else if (strcmp("cancel-tcpip-forward", reqname) == 0) { 91f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ret = svr_cancelremotetcp(); 92f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 93f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("reqname isn't tcpip-forward: '%s'", reqname)) 94f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 95f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 96f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectout: 97f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (wantreply) { 98f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (ret == DROPBEAR_SUCCESS) { 99f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_request_success(); 100f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 101f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_request_failure(); 102f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 103f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 104f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 105f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(reqname); 106f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 107f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave recv_msg_global_request")) 108f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 109f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 110f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 111f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_msg_request_success() { 112f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 113f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project CHECKCLEARTOWRITE(); 114f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_SUCCESS); 115f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 116f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 117f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 118f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 119f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_msg_request_failure() { 120f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 121f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project CHECKCLEARTOWRITE(); 122f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, SSH_MSG_REQUEST_FAILURE); 123f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 124f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 125f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 126f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 127f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int matchtcp(void* typedata1, void* typedata2) { 128f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 129f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const struct TCPListener *info1 = (struct TCPListener*)typedata1; 130f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const struct TCPListener *info2 = (struct TCPListener*)typedata2; 131f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 132f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return (info1->listenport == info2->listenport) 133f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project && (info1->chantype == info2->chantype) 134f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project && (strcmp(info1->listenaddr, info2->listenaddr) == 0); 135f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 136f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 137f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int svr_cancelremotetcp() { 138f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 139f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int ret = DROPBEAR_FAILURE; 140f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char * bindaddr = NULL; 141f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int addrlen; 142f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int port; 143f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct Listener * listener = NULL; 144f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct TCPListener tcpinfo; 145f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 146f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cancelremotetcp")) 147f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 148f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project bindaddr = buf_getstring(ses.payload, &addrlen); 149f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (addrlen > MAX_IP_LEN) { 150f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("addr len too long: %d", addrlen)) 151f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 152f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 153f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 154f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project port = buf_getint(ses.payload); 155f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 156f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo.sendaddr = NULL; 157f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo.sendport = 0; 158f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo.listenaddr = bindaddr; 159f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo.listenport = port; 160f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project listener = get_listener(CHANNEL_ID_TCPFORWARDED, &tcpinfo, matchtcp); 161f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (listener) { 162f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project remove_listener( listener ); 163f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ret = DROPBEAR_SUCCESS; 164f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 165f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 166f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectout: 167f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(bindaddr); 168f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cancelremotetcp")) 169f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return ret; 170f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 171f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 172f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int svr_remotetcpreq() { 173f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 174f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int ret = DROPBEAR_FAILURE; 175f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char * bindaddr = NULL; 176f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int addrlen; 177f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct TCPListener *tcpinfo = NULL; 178f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int port; 179f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 180f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter remotetcpreq")) 181f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 182f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project bindaddr = buf_getstring(ses.payload, &addrlen); 183f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (addrlen > MAX_IP_LEN) { 184f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("addr len too long: %d", addrlen)) 185f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 186f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 187f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 188f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project port = buf_getint(ses.payload); 189f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 190f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (port == 0) { 191f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_INFO, "Server chosen tcpfwd ports are unsupported"); 192f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 193f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 194f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 195f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (port < 1 || port > 65535) { 196f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("invalid port: %d", port)) 197f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 198f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 199f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 200f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (!ses.allowprivport && port < IPPORT_RESERVED) { 201f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("can't assign port < 1024 for non-root")) 202f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 203f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 204f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 205f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo = (struct TCPListener*)m_malloc(sizeof(struct TCPListener)); 206f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo->sendaddr = NULL; 207f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo->sendport = 0; 208f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo->listenaddr = bindaddr; 209f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo->listenport = port; 210f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo->chantype = &svr_chan_tcpremote; 211f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tcpinfo->tcp_type = forwarded; 212f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 213f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ret = listen_tcpfwd(tcpinfo); 214f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 215f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectout: 216f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (ret == DROPBEAR_FAILURE) { 217f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* we only free it if a listener wasn't created, since the listener 218f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * has to remember it if it's to be cancelled */ 219f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(bindaddr); 220f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(tcpinfo); 221f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 222f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave remotetcpreq")) 223f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return ret; 224f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 225f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 226f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* Called upon creating a new direct tcp channel (ie we connect out to an 227f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * address */ 228f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int newtcpdirect(struct Channel * channel) { 229f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 230f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* desthost = NULL; 231f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int destport; 232f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* orighost = NULL; 233f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int origport; 234f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project char portstring[NI_MAXSERV]; 235f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int sock; 236f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int len; 237f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int err = SSH_OPEN_ADMINISTRATIVELY_PROHIBITED; 238f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 239f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (svr_opts.nolocaltcp) { 240f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave newtcpdirect: local tcp forwarding disabled")) 241f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 242f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 243f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 244f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project desthost = buf_getstring(ses.payload, &len); 245f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (len > MAX_HOST_LEN) { 246f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave newtcpdirect: desthost too long")) 247f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 248f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 249f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 250f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project destport = buf_getint(ses.payload); 251f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 252f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project orighost = buf_getstring(ses.payload, &len); 253f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (len > MAX_HOST_LEN) { 254f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave newtcpdirect: orighost too long")) 255f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 256f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 257f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 258f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project origport = buf_getint(ses.payload); 259f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 260f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* best be sure */ 261f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (origport > 65535 || destport > 65535) { 262f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave newtcpdirect: port > 65535")) 263f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 264f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 265f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 266f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project snprintf(portstring, sizeof(portstring), "%d", destport); 267f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project sock = connect_remote(desthost, portstring, 1, NULL); 268f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (sock < 0) { 269f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project err = SSH_OPEN_CONNECT_FAILED; 270f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave newtcpdirect: sock failed")) 271f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 272f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 273f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 274f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ses.maxfd = MAX(ses.maxfd, sock); 275f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 276f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* We don't set readfd, that will get set after the connection's 277f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * progress succeeds */ 278f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel->writefd = sock; 279f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel->initconn = 1; 280f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 281f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project err = SSH_OPEN_IN_PROGRESS; 282f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 283f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectout: 284f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(desthost); 285f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(orighost); 286f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave newtcpdirect: err %d", err)) 287f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return err; 288f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 289f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 290f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 291