misc: Rename libssh/ to src/

1 files changed, 298 insertions, 0 deletions

diff --git a/src/channels1.c b/src/channels1.c
new file mode 100644
index 0000000..4cf7e77
--- /dev/null
+++ b/src/channels1.c
@@ -0,0 +1,298 @@
+/*
+ * channels1.c - Support for SSH-1 type channels
+ *
+ * This file is part of the SSH Library
+ *
+ * Copyright (c) 2003-2008 by Aris Adamantiadis
+ * Copyright (c) 2009      by Andreas Schneider <mail@cynapses.org>
+ *
+ * The SSH Library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
+ *
+ * The SSH Library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the SSH Library; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#ifndef _WIN32
+#include <arpa/inet.h>
+#endif
+#include "libssh/priv.h"
+#include "libssh/ssh1.h"
+#include "libssh/buffer.h"
+#include "libssh/packet.h"
+#include "libssh/channels.h"
+#include "libssh/session.h"
+
+#ifdef WITH_SSH1
+
+/*
+ * This is a big hack. In fact, SSH1 doesn't make a clever use of channels.
+ * The whole packets concerning shells are sent outside of a channel.
+ * Thus, an inside limitation of this behavior is that you can't only
+ * request one shell.
+ * The question is still how they managed to embed two "channel" into one
+ * protocol.
+ */
+
+int channel_open_session1(ssh_channel chan) {
+  /*
+   * We guess we are requesting an *exec* channel. It can only have one exec
+   * channel. So we abort with an error if we need more than one.
+   */
+  ssh_session session = chan->session;
+  if (session->exec_channel_opened) {
+    ssh_set_error(session, SSH_REQUEST_DENIED,
+        "SSH1 supports only one execution channel. "
+        "One has already been opened");
+    return -1;
+  }
+  session->exec_channel_opened = 1;
+  chan->state = SSH_CHANNEL_STATE_OPEN;
+  chan->local_maxpacket = 32000;
+  chan->local_window = 64000;
+  ssh_log(session, SSH_LOG_PACKET, "Opened a SSH1 channel session");
+
+  return 0;
+}
+
+/*  10 SSH_CMSG_REQUEST_PTY
+ *
+ *  string       TERM environment variable value (e.g. vt100)
+ *  32-bit int   terminal height, rows (e.g., 24)
+ *  32-bit int   terminal width, columns (e.g., 80)
+ *  32-bit int   terminal width, pixels (0 if no graphics) (e.g., 480)
+ *  32-bit int   terminal height, pixels (0 if no graphics) (e.g., 640)
+ *  n bytes      tty modes encoded in binary
+ *  Some day, someone should have a look at that nasty tty encoded. It's
+ *  much simplier under ssh2. I just hope the defaults values are ok ...
+ */
+
+int channel_request_pty_size1(ssh_channel channel, const char *terminal, int col,
+    int row) {
+  ssh_session session = channel->session;
+  ssh_string str = NULL;
+  if(channel->request_state != SSH_CHANNEL_REQ_STATE_NONE){
+    ssh_set_error(session,SSH_REQUEST_DENIED,"Wrong request state");
+    return SSH_ERROR;
+  }
+  str = ssh_string_from_char(terminal);
+  if (str == NULL) {
+    ssh_set_error_oom(session);
+    return -1;
+  }
+
+  if (buffer_add_u8(session->out_buffer, SSH_CMSG_REQUEST_PTY) < 0 ||
+      buffer_add_ssh_string(session->out_buffer, str) < 0) {
+    ssh_string_free(str);
+    return -1;
+  }
+  ssh_string_free(str);
+
+  if (buffer_add_u32(session->out_buffer, ntohl(row)) < 0 ||
+      buffer_add_u32(session->out_buffer, ntohl(col)) < 0 ||
+      buffer_add_u32(session->out_buffer, 0) < 0 || /* x */
+      buffer_add_u32(session->out_buffer, 0) < 0 || /* y */
+      buffer_add_u8(session->out_buffer, 0) < 0) { /* tty things */
+    return -1;
+  }
+
+  ssh_log(session, SSH_LOG_FUNCTIONS, "Opening a ssh1 pty");
+
+  if (packet_send(session) == SSH_ERROR) {
+    return -1;
+  }
+  switch(channel->request_state){
+    case SSH_CHANNEL_REQ_STATE_ERROR:
+    case SSH_CHANNEL_REQ_STATE_PENDING:
+    case SSH_CHANNEL_REQ_STATE_NONE:
+      channel->request_state=SSH_CHANNEL_REQ_STATE_NONE;
+      return SSH_ERROR;
+    case SSH_CHANNEL_REQ_STATE_ACCEPTED:
+      channel->request_state=SSH_CHANNEL_REQ_STATE_NONE;
+      ssh_log(session, SSH_LOG_RARE, "PTY: Success");
+      return SSH_OK;
+    case SSH_CHANNEL_REQ_STATE_DENIED:
+      channel->request_state=SSH_CHANNEL_REQ_STATE_NONE;
+      ssh_set_error(session, SSH_REQUEST_DENIED,
+          "Server denied PTY allocation");
+      ssh_log(session, SSH_LOG_RARE, "PTY: denied\n");
+      return SSH_ERROR;
+  }
+  // Not reached
+  return SSH_ERROR;
+}
+
+int channel_change_pty_size1(ssh_channel channel, int cols, int rows) {
+  ssh_session session = channel->session;
+  if(channel->request_state != SSH_CHANNEL_REQ_STATE_NONE){
+    ssh_set_error(session,SSH_REQUEST_DENIED,"Wrong request state");
+    return SSH_ERROR;
+  }
+  if (buffer_add_u8(session->out_buffer, SSH_CMSG_WINDOW_SIZE) < 0 ||
+      buffer_add_u32(session->out_buffer, ntohl(rows)) < 0 ||
+      buffer_add_u32(session->out_buffer, ntohl(cols)) < 0 ||
+      buffer_add_u32(session->out_buffer, 0) < 0 ||
+      buffer_add_u32(session->out_buffer, 0) < 0) {
+    return SSH_ERROR;
+  }
+  channel->request_state=SSH_CHANNEL_REQ_STATE_PENDING;
+  if (packet_send(session) == SSH_ERROR) {
+    return SSH_ERROR;
+  }
+
+  ssh_log(session, SSH_LOG_PROTOCOL, "Change pty size send");
+  while(channel->request_state==SSH_CHANNEL_REQ_STATE_PENDING){
+    ssh_handle_packets(session,-1);
+  }
+  switch(channel->request_state){
+    case SSH_CHANNEL_REQ_STATE_ERROR:
+    case SSH_CHANNEL_REQ_STATE_PENDING:
+    case SSH_CHANNEL_REQ_STATE_NONE:
+      channel->request_state=SSH_CHANNEL_REQ_STATE_NONE;
+      return SSH_ERROR;
+    case SSH_CHANNEL_REQ_STATE_ACCEPTED:
+      channel->request_state=SSH_CHANNEL_REQ_STATE_NONE;
+      ssh_log(session, SSH_LOG_PROTOCOL, "pty size changed");
+      return SSH_OK;
+    case SSH_CHANNEL_REQ_STATE_DENIED:
+      channel->request_state=SSH_CHANNEL_REQ_STATE_NONE;
+      ssh_log(session, SSH_LOG_RARE, "pty size change denied");
+      ssh_set_error(session, SSH_REQUEST_DENIED, "pty size change denied");
+      return SSH_ERROR;
+  }
+  // Not reached
+  return SSH_ERROR;
+
+}
+
+int channel_request_shell1(ssh_channel channel) {
+  ssh_session session = channel->session;
+
+  if (buffer_add_u8(session->out_buffer,SSH_CMSG_EXEC_SHELL) < 0) {
+    return -1;
+  }
+
+  if (packet_send(session) == SSH_ERROR) {
+    return -1;
+  }
+
+  ssh_log(session, SSH_LOG_RARE, "Launched a shell");
+
+  return 0;
+}
+
+int channel_request_exec1(ssh_channel channel, const char *cmd) {
+  ssh_session session = channel->session;
+  ssh_string command = NULL;
+
+  command = ssh_string_from_char(cmd);
+  if (command == NULL) {
+    return -1;
+  }
+
+  if (buffer_add_u8(session->out_buffer, SSH_CMSG_EXEC_CMD) < 0 ||
+      buffer_add_ssh_string(session->out_buffer, command) < 0) {
+    ssh_string_free(command);
+    return -1;
+  }
+  ssh_string_free(command);
+
+  if(packet_send(session) == SSH_ERROR) {
+    return -1;
+  }
+
+  ssh_log(session, SSH_LOG_RARE, "Executing %s ...", cmd);
+
+  return 0;
+}
+
+SSH_PACKET_CALLBACK(ssh_packet_data1){
+    ssh_channel channel = session->channels;
+    ssh_string str = NULL;
+    int is_stderr=(type==SSH_SMSG_STDOUT_DATA ? 0 : 1);
+    (void)user;
+    str = buffer_get_ssh_string(packet);
+    if (str == NULL) {
+      ssh_log(session, SSH_LOG_FUNCTIONS, "Invalid data packet !\n");
+      return SSH_PACKET_USED;
+    }
+
+    ssh_log(session, SSH_LOG_PROTOCOL,
+        "Adding %zu bytes data in %d",
+        ssh_string_len(str), is_stderr);
+
+    if (channel_default_bufferize(channel, ssh_string_data(str), ssh_string_len(str),
+          is_stderr) < 0) {
+      ssh_string_free(str);
+      return SSH_PACKET_USED;
+    }
+    ssh_string_free(str);
+
+    return SSH_PACKET_USED;
+}
+
+SSH_PACKET_CALLBACK(ssh_packet_close1){
+  ssh_channel channel = session->channels;
+  uint32_t status;
+  (void)type;
+  (void)user;
+  buffer_get_u32(packet, &status);
+  /*
+   * It's much more than a channel closing. spec says it's the last
+   * message sent by server (strange)
+   */
+
+  /* actually status is lost somewhere */
+  channel->state = SSH_CHANNEL_STATE_CLOSED;
+  channel->remote_eof = 1;
+
+  buffer_add_u8(session->out_buffer, SSH_CMSG_EXIT_CONFIRMATION);
+  packet_send(session);
+
+  return SSH_PACKET_USED;
+}
+
+
+int channel_write1(ssh_channel channel, const void *data, int len) {
+  ssh_session session = channel->session;
+  int origlen = len;
+  int effectivelen;
+  const unsigned char *ptr=data;
+  while (len > 0) {
+    if (buffer_add_u8(session->out_buffer, SSH_CMSG_STDIN_DATA) < 0) {
+      return -1;
+    }
+
+    effectivelen = len > 32000 ? 32000 : len;
+
+    if (buffer_add_u32(session->out_buffer, htonl(effectivelen)) < 0 ||
+        buffer_add_data(session->out_buffer, ptr, effectivelen) < 0) {
+      return -1;
+    }
+
+    ptr += effectivelen;
+    len -= effectivelen;
+
+    if (packet_send(session) == SSH_ERROR) {
+      return -1;
+    }
+  }
+
+  return origlen;
+}
+
+#endif /* WITH_SSH1 */
+/* vim: set ts=2 sw=2 et cindent: */