cli-chansession.c revision f7fc46c63fdc8f39234fea409b8dbe116d73ebf8
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 "packet.h" 28f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "buffer.h" 29f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "session.h" 30f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "dbutil.h" 31f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "channel.h" 32f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "ssh.h" 33f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "runopts.h" 34f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "termcodes.h" 35f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#include "chansession.h" 36f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 37f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void cli_closechansess(struct Channel *channel); 38f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int cli_initchansess(struct Channel *channel); 39f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void cli_chansessreq(struct Channel *channel); 40f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 41f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void start_channel_request(struct Channel *channel, unsigned char *type); 42f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 43f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_chansess_pty_req(struct Channel *channel); 44f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_chansess_shell_req(struct Channel *channel); 45f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 46f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void cli_tty_setup(); 47f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 48f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectconst struct ChanType clichansess = { 49f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 0, /* sepfds */ 50f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project "session", /* name */ 51f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_initchansess, /* inithandler */ 52f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project NULL, /* checkclosehandler */ 53f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_chansessreq, /* reqhandler */ 54f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_closechansess, /* closehandler */ 55f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project}; 56f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 57f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void cli_chansessreq(struct Channel *channel) { 58f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 59f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* type = NULL; 60f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project int wantreply; 61f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 62f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cli_chansessreq")) 63f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 64f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project type = buf_getstring(ses.payload, NULL); 65f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project wantreply = buf_getbool(ses.payload); 66f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 67f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (strcmp(type, "exit-status") == 0) { 68f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.retval = buf_getint(ses.payload); 69f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("got exit-status of '%d'", cli_ses.retval)) 70f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else if (strcmp(type, "exit-signal") == 0) { 71f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("got exit-signal, ignoring it")) 72f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 73f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("unknown request '%s'", type)) 74f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_msg_channel_failure(channel); 75f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project goto out; 76f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 77f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 78f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectout: 79f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project m_free(type); 80f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 81f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 82f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 83f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* If the main session goes, we close it up */ 84f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void cli_closechansess(struct Channel *UNUSED(channel)) { 85f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 86f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* This channel hasn't gone yet, so we have > 1 */ 87f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (ses.chancount > 1) { 88f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_INFO, "Waiting for other channels to close..."); 89f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 90f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 91f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_tty_cleanup(); /* Restore tty modes etc */ 92f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 93f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 94f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 95f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void start_channel_request(struct Channel *channel, 96f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char *type) { 97f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 98f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project CHECKCLEARTOWRITE(); 99f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST); 100f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, channel->remotechan); 101f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 102f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, type, strlen(type)); 103f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 104f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 105f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 106f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project/* Taken from OpenSSH's sshtty.c: 107f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project * RCSID("OpenBSD: sshtty.c,v 1.5 2003/09/19 17:43:35 markus Exp "); */ 108f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void cli_tty_setup() { 109f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 110f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct termios tio; 111f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 112f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cli_pty_setup")) 113f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 114f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.tty_raw_mode == 1) { 115f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_tty_setup: already in raw mode!")) 116f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return; 117f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 118f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 119f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (tcgetattr(STDIN_FILENO, &tio) == -1) { 120f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("Failed to set raw TTY mode"); 121f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 122f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 123f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* make a copy */ 124f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.saved_tio = tio; 125f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 126f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_iflag |= IGNPAR; 127f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_iflag &= ~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF); 128f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef IUCLC 129f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_iflag &= ~IUCLC; 130f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 131f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_lflag &= ~(ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHONL); 132f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#ifdef IEXTEN 133f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_lflag &= ~IEXTEN; 134f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project#endif 135f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_oflag &= ~OPOST; 136f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_cc[VMIN] = 1; 137f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project tio.c_cc[VTIME] = 0; 138f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (tcsetattr(STDIN_FILENO, TCSADRAIN, &tio) == -1) { 139f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("Failed to set raw TTY mode"); 140f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 141f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 142f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.tty_raw_mode = 1; 143f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_tty_setup")) 144f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 145f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 146f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid cli_tty_cleanup() { 147f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 148f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cli_tty_cleanup")) 149f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 150f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_ses.tty_raw_mode == 0) { 151f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_tty_cleanup: not in raw mode")) 152f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return; 153f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 154f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 155f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (tcsetattr(STDIN_FILENO, TCSADRAIN, &cli_ses.saved_tio) == -1) { 156f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, "Failed restoring TTY"); 157f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 158f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.tty_raw_mode = 0; 159f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 160f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 161f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_tty_cleanup")) 162f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 163f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 164f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void put_termcodes() { 165f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 166f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct termios tio; 167f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int sshcode; 168f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project const struct TermCode *termcode; 169f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int value; 170f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int mapcode; 171f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 172f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int bufpos1, bufpos2; 173f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 174f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter put_termcodes")) 175f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 176f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (tcgetattr(STDIN_FILENO, &tio) == -1) { 177f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_log(LOG_WARNING, "Failed reading termmodes"); 178f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, 1); /* Just the terminator */ 179f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, 0); /* TTY_OP_END */ 180f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return; 181f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 182f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 183f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project bufpos1 = ses.writepayload->pos; 184f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, 0); /* A placeholder for the final length */ 185f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 186f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* As with Dropbear server, we ignore baud rates for now */ 187f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (sshcode = 1; sshcode < MAX_TERMCODE; sshcode++) { 188f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 189f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project termcode = &termcodes[sshcode]; 190f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project mapcode = termcode->mapcode; 191f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 192f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project switch (termcode->type) { 193f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 194f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case TERMCODE_NONE: 195f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project continue; 196f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 197f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case TERMCODE_CONTROLCHAR: 198f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project value = tio.c_cc[mapcode]; 199f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 200f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 201f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case TERMCODE_INPUT: 202f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project value = tio.c_iflag & mapcode; 203f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 204f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 205f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case TERMCODE_OUTPUT: 206f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project value = tio.c_oflag & mapcode; 207f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 208f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 209f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case TERMCODE_LOCAL: 210f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project value = tio.c_lflag & mapcode; 211f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 212f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 213f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project case TERMCODE_CONTROL: 214f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project value = tio.c_cflag & mapcode; 215f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project break; 216f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 217f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project default: 218f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project continue; 219f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 220f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 221f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 222f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* If we reach here, we have something to say */ 223f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, sshcode); 224f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, value); 225f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 226f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 227f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, 0); /* THE END, aka TTY_OP_END */ 228f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 229f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Put the string length at the start of the buffer */ 230f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project bufpos2 = ses.writepayload->pos; 231f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 232f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_setpos(ses.writepayload, bufpos1); /* Jump back */ 233f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, bufpos2 - bufpos1 - 4); /* len(termcodes) */ 234f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_setpos(ses.writepayload, bufpos2); /* Back where we were */ 235f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 236f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave put_termcodes")) 237f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 238f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 239f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void put_winsize() { 240f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 241f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct winsize ws; 242f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 243f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0) { 244f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Some sane defaults */ 245f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ws.ws_row = 25; 246f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ws.ws_col = 80; 247f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ws.ws_xpixel = 0; 248f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project ws.ws_ypixel = 0; 249f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 250f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 251f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, ws.ws_col); /* Cols */ 252f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, ws.ws_row); /* Rows */ 253f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, ws.ws_xpixel); /* Width */ 254f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, ws.ws_ypixel); /* Height */ 255f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 256f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 257f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 258f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void sigwinch_handler(int UNUSED(unused)) { 259f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 260f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.winchange = 1; 261f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 262f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 263f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 264f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid cli_chansess_winchange() { 265f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 266f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned int i; 267f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project struct Channel *channel = NULL; 268f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 269f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project for (i = 0; i < ses.chansize; i++) { 270f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel = ses.channels[i]; 271f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (channel != NULL && channel->type == &clichansess) { 272f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project CHECKCLEARTOWRITE(); 273f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST); 274f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putint(ses.writepayload, channel->remotechan); 275f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, "window-change", 13); 276f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, 0); /* FALSE says the spec */ 277f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project put_winsize(); 278f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 279f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 280f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 281f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_ses.winchange = 0; 282f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 283f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 284f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_chansess_pty_req(struct Channel *channel) { 285f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 286f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* term = NULL; 287f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 288f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter send_chansess_pty_req")) 289f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 290f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project start_channel_request(channel, "pty-req"); 291f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 292f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Don't want replies */ 293f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, 0); 294f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 295f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Get the terminal */ 296f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project term = getenv("TERM"); 297f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (term == NULL) { 298f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project term = "vt100"; /* Seems a safe default */ 299f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 300f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, term, strlen(term)); 301f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 302f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Window size */ 303f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project put_winsize(); 304f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 305f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Terminal mode encoding */ 306f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project put_termcodes(); 307f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 308f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 309f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 310f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* Set up a window-change handler */ 311f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (signal(SIGWINCH, sigwinch_handler) == SIG_ERR) { 312f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("signal error"); 313f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 314f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave send_chansess_pty_req")) 315f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 316f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 317f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic void send_chansess_shell_req(struct Channel *channel) { 318f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 319f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project unsigned char* reqtype = NULL; 320f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 321f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter send_chansess_shell_req")) 322f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 323f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_opts.cmd) { 324f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project reqtype = "exec"; 325f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } else { 326f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project reqtype = "shell"; 327f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 328f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 329f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project start_channel_request(channel, reqtype); 330f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 331f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* XXX TODO */ 332f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putbyte(ses.writepayload, 0); /* Don't want replies */ 333f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_opts.cmd) { 334f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project buf_putstring(ses.writepayload, cli_opts.cmd, strlen(cli_opts.cmd)); 335f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 336f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 337f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 338f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave send_chansess_shell_req")) 339f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 340f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 341f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectstatic int cli_initchansess(struct Channel *channel) { 342f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 343f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 344f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel->writefd = STDOUT_FILENO; 345f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project setnonblocking(STDOUT_FILENO); 346f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 347f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel->readfd = STDIN_FILENO; 348f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project setnonblocking(STDIN_FILENO); 349f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 350f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel->errfd = STDERR_FILENO; 351f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project setnonblocking(STDERR_FILENO); 352f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 353f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project channel->extrabuf = cbuf_new(RECV_MAXWINDOW); 354f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 355f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_opts.wantpty) { 356f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_chansess_pty_req(channel); 357f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 358f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 359f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project send_chansess_shell_req(channel); 360f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 361f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (cli_opts.wantpty) { 362f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project cli_tty_setup(); 363f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 364f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 365f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project return 0; /* Success */ 366f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 367f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 368f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 369f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Projectvoid cli_send_chansess_request() { 370f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 371f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("enter cli_send_chansess_request")) 372f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project if (send_msg_channel_open_init(STDIN_FILENO, &clichansess) 373f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project == DROPBEAR_FAILURE) { 374f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project dropbear_exit("Couldn't open initial channel"); 375f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project } 376f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 377f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project /* No special channel request data */ 378f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project encrypt_packet(); 379f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project TRACE(("leave cli_send_chansess_request")) 380f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project 381f7fc46c63fdc8f39234fea409b8dbe116d73ebf8The Android Open Source Project} 382