1 files changed, 462 insertions, 0 deletions

diff --git a/other/ssharp/ttymodes.c b/other/ssharp/ttymodes.c
new file mode 100644
index 0000000..6124cb4
--- /dev/null
+++ b/other/ssharp/ttymodes.c
@@ -0,0 +1,462 @@
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+
+/*
+ * SSH2 tty modes support by Kevin Steves.
+ * Copyright (c) 2001 Kevin Steves.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Encoding and decoding of terminal modes in a portable way.
+ * Much of the format is defined in ttymodes.h; it is included multiple times
+ * into this file with the appropriate macro definitions to generate the
+ * suitable code.
+ */
+
+#include "includes.h"
+RCSID("$OpenBSD: ttymodes.c,v 1.13 2001/04/15 01:35:22 stevesk Exp $");
+
+#include "packet.h"
+#include "log.h"
+#include "ssh1.h"
+#include "compat.h"
+#include "buffer.h"
+#include "bufaux.h"
+
+#define TTY_OP_END              0
+/*
+ * uint32 (u_int) follows speed in SSH1 and SSH2
+ */
+#define TTY_OP_ISPEED_PROTO1    192
+#define TTY_OP_OSPEED_PROTO1    193
+#define TTY_OP_ISPEED_PROTO2    128
+#define TTY_OP_OSPEED_PROTO2    129
+
+/*
+ * Converts POSIX speed_t to a baud rate.  The values of the
+ * constants for speed_t are not themselves portable.
+ */
+static int
+speed_to_baud(speed_t speed)
+{
+        switch (speed) {
+        case B0:
+                return 0;
+        case B50:
+                return 50;
+        case B75:
+                return 75;
+        case B110:
+                return 110;
+        case B134:
+                return 134;
+        case B150:
+                return 150;
+        case B200:
+                return 200;
+        case B300:
+                return 300;
+        case B600:
+                return 600;
+        case B1200:
+                return 1200;
+        case B1800:
+                return 1800;
+        case B2400:
+                return 2400;
+        case B4800:
+                return 4800;
+        case B9600:
+                return 9600;
+
+#ifdef B19200
+        case B19200:
+                return 19200;
+#else /* B19200 */
+#ifdef EXTA
+        case EXTA:
+                return 19200;
+#endif /* EXTA */
+#endif /* B19200 */
+
+#ifdef B38400
+        case B38400:
+                return 38400;
+#else /* B38400 */
+#ifdef EXTB
+        case EXTB:
+                return 38400;
+#endif /* EXTB */
+#endif /* B38400 */
+
+#ifdef B7200
+        case B7200:
+                return 7200;
+#endif /* B7200 */
+#ifdef B14400
+        case B14400:
+                return 14400;
+#endif /* B14400 */
+#ifdef B28800
+        case B28800:
+                return 28800;
+#endif /* B28800 */
+#ifdef B57600
+        case B57600:
+                return 57600;
+#endif /* B57600 */
+#ifdef B76800
+        case B76800:
+                return 76800;
+#endif /* B76800 */
+#ifdef B115200
+        case B115200:
+                return 115200;
+#endif /* B115200 */
+#ifdef B230400
+        case B230400:
+                return 230400;
+#endif /* B230400 */
+        default:
+                return 9600;
+        }
+}
+
+/*
+ * Converts a numeric baud rate to a POSIX speed_t.
+ */
+static speed_t
+baud_to_speed(int baud)
+{
+        switch (baud) {
+        case 0:
+                return B0;
+        case 50:
+                return B50;
+        case 75:
+                return B75;
+        case 110:
+                return B110;
+        case 134:
+                return B134;
+        case 150:
+                return B150;
+        case 200:
+                return B200;
+        case 300:
+                return B300;
+        case 600:
+                return B600;
+        case 1200:
+                return B1200;
+        case 1800:
+                return B1800;
+        case 2400:
+                return B2400;
+        case 4800:
+                return B4800;
+        case 9600:
+                return B9600;
+
+#ifdef B19200
+        case 19200:
+                return B19200;
+#else /* B19200 */
+#ifdef EXTA
+        case 19200:
+                return EXTA;
+#endif /* EXTA */
+#endif /* B19200 */
+
+#ifdef B38400
+        case 38400:
+                return B38400;
+#else /* B38400 */
+#ifdef EXTB
+        case 38400:
+                return EXTB;
+#endif /* EXTB */
+#endif /* B38400 */
+
+#ifdef B7200
+        case 7200:
+                return B7200;
+#endif /* B7200 */
+#ifdef B14400
+        case 14400:
+                return B14400;
+#endif /* B14400 */
+#ifdef B28800
+        case 28800:
+                return B28800;
+#endif /* B28800 */
+#ifdef B57600
+        case 57600:
+                return B57600;
+#endif /* B57600 */
+#ifdef B76800
+        case 76800:
+                return B76800;
+#endif /* B76800 */
+#ifdef B115200
+        case 115200:
+                return B115200;
+#endif /* B115200 */
+#ifdef B230400
+        case 230400:
+                return B230400;
+#endif /* B230400 */
+        default:
+                return B9600;
+        }
+}
+
+/*
+ * Encodes terminal modes for the terminal referenced by fd
+ * or tiop in a portable manner, and appends the modes to a packet
+ * being constructed.
+ */
+void
+tty_make_modes(int fd, struct termios *tiop)
+{
+        struct termios tio;
+        int baud;
+        Buffer buf;
+        int tty_op_ospeed, tty_op_ispeed;
+        void (*put_arg)(Buffer *, u_int);
+
+        buffer_init(&buf);
+        if (compat20) {
+                tty_op_ospeed = TTY_OP_OSPEED_PROTO2;
+                tty_op_ispeed = TTY_OP_ISPEED_PROTO2;
+                put_arg = buffer_put_int;
+        } else {
+                tty_op_ospeed = TTY_OP_OSPEED_PROTO1;
+                tty_op_ispeed = TTY_OP_ISPEED_PROTO1;
+                put_arg = (void (*)(Buffer *, u_int)) buffer_put_char;
+        }
+
+        if (tiop == NULL) {
+                if (tcgetattr(fd, &tio) == -1) {
+                        log("tcgetattr: %.100s", strerror(errno));
+                        goto end;
+                }
+        } else
+                tio = *tiop;
+
+        /* Store input and output baud rates. */
+        baud = speed_to_baud(cfgetospeed(&tio));
+        debug2("tty_make_modes: ospeed %d", baud);
+        buffer_put_char(&buf, tty_op_ospeed);
+        buffer_put_int(&buf, baud);
+        baud = speed_to_baud(cfgetispeed(&tio));
+        debug2("tty_make_modes: ispeed %d", baud);
+        buffer_put_char(&buf, tty_op_ispeed);
+        buffer_put_int(&buf, baud);
+
+        /* Store values of mode flags. */
+#define TTYCHAR(NAME, OP) \
+        debug2("tty_make_modes: %d %d", OP, tio.c_cc[NAME]); \
+        buffer_put_char(&buf, OP); \
+        put_arg(&buf, tio.c_cc[NAME]);
+
+#define TTYMODE(NAME, FIELD, OP) \
+        debug2("tty_make_modes: %d %d", OP, ((tio.FIELD & NAME) != 0)); \
+        buffer_put_char(&buf, OP); \
+        put_arg(&buf, ((tio.FIELD & NAME) != 0));
+
+#include "ttymodes.h"
+
+#undef TTYCHAR
+#undef TTYMODE
+
+end:
+        /* Mark end of mode data. */
+        buffer_put_char(&buf, TTY_OP_END);
+        if (compat20)
+                packet_put_string(buffer_ptr(&buf), buffer_len(&buf));
+        else
+                packet_put_raw(buffer_ptr(&buf), buffer_len(&buf));
+        buffer_free(&buf);
+        return;
+}
+
+/*
+ * Decodes terminal modes for the terminal referenced by fd in a portable
+ * manner from a packet being read.
+ */
+void
+tty_parse_modes(int fd, int *n_bytes_ptr)
+{
+        struct termios tio;
+        int opcode, baud;
+        int n_bytes = 0;
+        int failure = 0;
+        u_int (*get_arg)(void);
+        int arg, arg_size;
+
+        if (compat20) {
+                *n_bytes_ptr = packet_get_int();
+                debug2("tty_parse_modes: SSH2 n_bytes %d", *n_bytes_ptr);
+                if (*n_bytes_ptr == 0)
+                        return;
+                get_arg = packet_get_int;
+                arg_size = 4;
+        } else {
+                get_arg = packet_get_char;
+                arg_size = 1;
+        }
+
+        /*
+         * Get old attributes for the terminal.  We will modify these
+         * flags. I am hoping that if there are any machine-specific
+         * modes, they will initially have reasonable values.
+         */
+        if (tcgetattr(fd, &tio) == -1) {
+                log("tcgetattr: %.100s", strerror(errno));
+                failure = -1;
+        }
+
+        for (;;) {
+                n_bytes += 1;
+                opcode = packet_get_char();
+                switch (opcode) {
+                case TTY_OP_END:
+                        goto set;
+
+                /* XXX: future conflict possible */
+                case TTY_OP_ISPEED_PROTO1:
+                case TTY_OP_ISPEED_PROTO2:
+                        n_bytes += 4;
+                        baud = packet_get_int();
+                        debug2("tty_parse_modes: ispeed %d", baud);
+                        if (failure != -1 && cfsetispeed(&tio, baud_to_speed(baud)) == -1)
+                                error("cfsetispeed failed for %d", baud);
+                        break;
+
+                /* XXX: future conflict possible */
+                case TTY_OP_OSPEED_PROTO1:
+                case TTY_OP_OSPEED_PROTO2:
+                        n_bytes += 4;
+                        baud = packet_get_int();
+                        debug2("tty_parse_modes: ospeed %d", baud);
+                        if (failure != -1 && cfsetospeed(&tio, baud_to_speed(baud)) == -1)
+                                error("cfsetospeed failed for %d", baud);
+                        break;
+
+#define TTYCHAR(NAME, OP) \
+        case OP: \
+          n_bytes += arg_size; \
+          tio.c_cc[NAME] = get_arg(); \
+          debug2("tty_parse_modes: %d %d", OP, tio.c_cc[NAME]); \
+          break;
+#define TTYMODE(NAME, FIELD, OP) \
+        case OP: \
+          n_bytes += arg_size; \
+          if ((arg = get_arg())) \
+            tio.FIELD |= NAME; \
+          else \
+            tio.FIELD &= ~NAME; \
+          debug2("tty_parse_modes: %d %d", OP, arg); \
+          break;
+
+#include "ttymodes.h"
+
+#undef TTYCHAR
+#undef TTYMODE
+
+                default:
+                        debug("Ignoring unsupported tty mode opcode %d (0x%x)",
+                              opcode, opcode);
+                        if (!compat20) {
+                                /*
+                                 * SSH1:
+                                 * Opcodes 1 to 127 are defined to have
+                                 * a one-byte argument.
+                                 * Opcodes 128 to 159 are defined to have
+                                 * an integer argument.
+                                 */
+                                if (opcode > 0 && opcode < 128) {
+                                        n_bytes += 1;
+                                        (void) packet_get_char();
+                                        break;
+                                } else if (opcode >= 128 && opcode < 160) {
+                                        n_bytes += 4;
+                                        (void) packet_get_int();
+                                        break;
+                                } else {
+                                        /*
+                                         * It is a truly undefined opcode (160 to 255).
+                                         * We have no idea about its arguments.  So we
+                                         * must stop parsing.  Note that some data may be
+                                         * left in the packet; hopefully there is nothing
+                                         * more coming after the mode data.
+                                         */
+                                        log("parse_tty_modes: unknown opcode %d", opcode);
+                                        packet_integrity_check(0, 1, SSH_CMSG_REQUEST_PTY);
+                                        goto set;
+                                }
+                        } else {
+                                /*
+                                 * SSH2:
+                                 * Opcodes 1 to 159 are defined to have
+                                 * a uint32 argument.
+                                 * Opcodes 160 to 255 are undefined and
+                                 * cause parsing to stop.
+                                 */
+                                if (opcode > 0 && opcode < 160) {
+                                        n_bytes += 4;
+                                        (void) packet_get_int();
+                                        break;
+                                } else {
+                                        log("parse_tty_modes: unknown opcode %d", opcode);
+                                        goto set;
+                                }
+                        }
+                }
+        }
+
+set:
+        if (*n_bytes_ptr != n_bytes) {
+                *n_bytes_ptr = n_bytes;
+                log("parse_tty_modes: n_bytes_ptr != n_bytes: %d %d",
+                    *n_bytes_ptr, n_bytes);
+                return;         /* Don't process bytes passed */
+        }
+        if (failure == -1)
+                return;         /* Packet parsed ok but tcgetattr() failed */
+
+        /* Set the new modes for the terminal. */
+        if (tcsetattr(fd, TCSANOW, &tio) == -1)
+                log("Setting tty modes failed: %.100s", strerror(errno));
+        return;
+}