464 lines
16 KiB
C
464 lines
16 KiB
C
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is libguac-client-ssh.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Michael Jumper.
|
|
* Portions created by the Initial Developer are Copyright (C) 2011
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* James Muehlner <dagger10k@users.sourceforge.net>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include <sys/select.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <cairo/cairo.h>
|
|
#include <pango/pangocairo.h>
|
|
|
|
#include <guacamole/socket.h>
|
|
#include <guacamole/protocol.h>
|
|
#include <guacamole/client.h>
|
|
#include <guacamole/error.h>
|
|
|
|
#include <libssh2.h>
|
|
|
|
#include "guac_handlers.h"
|
|
#include "client.h"
|
|
#include "common.h"
|
|
#include "cursor.h"
|
|
|
|
int ssh_guac_client_handle_messages(guac_client* client) {
|
|
|
|
guac_socket* socket = client->socket;
|
|
ssh_guac_client_data* client_data = (ssh_guac_client_data*) client->data;
|
|
char buffer[8192];
|
|
|
|
int ret_val;
|
|
int fd = client_data->term->stdout_pipe_fd[0];
|
|
struct timeval timeout;
|
|
fd_set fds;
|
|
|
|
/* Build fd_set */
|
|
FD_ZERO(&fds);
|
|
FD_SET(fd, &fds);
|
|
|
|
/* Time to wait */
|
|
timeout.tv_sec = 1;
|
|
timeout.tv_usec = 0;
|
|
|
|
/* Wait for data to be available */
|
|
ret_val = select(fd+1, &fds, NULL, NULL, &timeout);
|
|
if (ret_val > 0) {
|
|
|
|
int bytes_read = 0;
|
|
|
|
/* Lock terminal access */
|
|
pthread_mutex_lock(&(client_data->term->lock));
|
|
|
|
/* Read data, write to terminal */
|
|
if ((bytes_read = read(fd, buffer, sizeof(buffer))) > 0) {
|
|
|
|
if (guac_terminal_write(client_data->term, buffer, bytes_read))
|
|
return 1;
|
|
|
|
}
|
|
|
|
/* Notify on error */
|
|
if (bytes_read < 0) {
|
|
guac_protocol_send_error(socket, "Error reading data.",
|
|
GUAC_PROTOCOL_STATUS_INTERNAL_ERROR);
|
|
guac_socket_flush(socket);
|
|
return 1;
|
|
}
|
|
|
|
/* Update cursor */
|
|
guac_terminal_commit_cursor(client_data->term);
|
|
|
|
/* Flush terminal display */
|
|
guac_terminal_display_flush(client_data->term->display);
|
|
|
|
/* Unlock terminal access */
|
|
pthread_mutex_unlock(&(client_data->term->lock));
|
|
|
|
}
|
|
else if (ret_val < 0) {
|
|
guac_error_message = "Error waiting for pipe";
|
|
guac_error = GUAC_STATUS_SEE_ERRNO;
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int ssh_guac_client_clipboard_handler(guac_client* client, char* data) {
|
|
|
|
ssh_guac_client_data* client_data = (ssh_guac_client_data*) client->data;
|
|
|
|
free(client_data->clipboard_data);
|
|
|
|
client_data->clipboard_data = strdup(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
int ssh_guac_client_mouse_handler(guac_client* client, int x, int y, int mask) {
|
|
|
|
ssh_guac_client_data* client_data = (ssh_guac_client_data*) client->data;
|
|
guac_terminal* term = client_data->term;
|
|
|
|
/* Determine which buttons were just released and pressed */
|
|
int released_mask = client_data->mouse_mask & ~mask;
|
|
int pressed_mask = ~client_data->mouse_mask & mask;
|
|
|
|
client_data->mouse_mask = mask;
|
|
|
|
/* Show mouse cursor if not already shown */
|
|
if (client_data->current_cursor != client_data->ibar_cursor) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
|
|
client_data->current_cursor = client_data->ibar_cursor;
|
|
guac_ssh_set_cursor(client, client_data->ibar_cursor);
|
|
guac_socket_flush(client->socket);
|
|
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
/* Paste contents of clipboard on right or middle mouse button up */
|
|
if ((released_mask & GUAC_CLIENT_MOUSE_RIGHT) || (released_mask & GUAC_CLIENT_MOUSE_MIDDLE)) {
|
|
if (client_data->clipboard_data != NULL)
|
|
return guac_terminal_send_string(term, client_data->clipboard_data);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* If text selected, change state based on left mouse mouse button */
|
|
if (term->text_selected) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
|
|
/* If mouse button released, stop selection */
|
|
if (released_mask & GUAC_CLIENT_MOUSE_LEFT) {
|
|
|
|
/* End selection and get selected text */
|
|
char* string = malloc(term->term_width * term->term_height * sizeof(char));
|
|
guac_terminal_select_end(term, string);
|
|
|
|
/* Store new data */
|
|
free(client_data->clipboard_data);
|
|
client_data->clipboard_data = string;
|
|
|
|
/* Send data */
|
|
guac_protocol_send_clipboard(client->socket, string);
|
|
guac_socket_flush(client->socket);
|
|
|
|
}
|
|
|
|
/* Otherwise, just update */
|
|
else
|
|
guac_terminal_select_update(term,
|
|
y / term->display->char_height - term->scroll_offset,
|
|
x / term->display->char_width);
|
|
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
/* Otherwise, if mouse button pressed AND moved, start selection */
|
|
else if (!(pressed_mask & GUAC_CLIENT_MOUSE_LEFT) &&
|
|
mask & GUAC_CLIENT_MOUSE_LEFT) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
|
|
guac_terminal_select_start(term,
|
|
y / term->display->char_height - term->scroll_offset,
|
|
x / term->display->char_width);
|
|
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
/* Scroll up if wheel moved up */
|
|
if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_UP) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
guac_terminal_scroll_display_up(term, GUAC_SSH_WHEEL_SCROLL_AMOUNT);
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
/* Scroll down if wheel moved down */
|
|
if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_DOWN) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
guac_terminal_scroll_display_down(term, GUAC_SSH_WHEEL_SCROLL_AMOUNT);
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int ssh_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
|
|
|
|
ssh_guac_client_data* client_data = (ssh_guac_client_data*) client->data;
|
|
guac_terminal* term = client_data->term;
|
|
|
|
/* Hide mouse cursor if not already hidden */
|
|
if (client_data->current_cursor != client_data->blank_cursor) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
|
|
client_data->current_cursor = client_data->blank_cursor;
|
|
guac_ssh_set_cursor(client, client_data->blank_cursor);
|
|
guac_socket_flush(client->socket);
|
|
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
/* Track modifiers */
|
|
if (keysym == 0xFFE3)
|
|
client_data->mod_ctrl = pressed;
|
|
else if (keysym == 0xFFE9)
|
|
client_data->mod_alt = pressed;
|
|
else if (keysym == 0xFFE1)
|
|
client_data->mod_shift = pressed;
|
|
|
|
/* If key pressed */
|
|
else if (pressed) {
|
|
|
|
/* Ctrl+Shift+V shortcut for paste */
|
|
if (keysym == 'V' && client_data->mod_ctrl) {
|
|
if (client_data->clipboard_data != NULL)
|
|
return guac_terminal_send_string(term, client_data->clipboard_data);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/* Shift+PgUp / Shift+PgDown shortcuts for scrolling */
|
|
if (client_data->mod_shift) {
|
|
|
|
/* Page up */
|
|
if (keysym == 0xFF55) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
guac_terminal_scroll_display_up(term, term->term_height);
|
|
pthread_mutex_unlock(&(term->lock));
|
|
return 0;
|
|
}
|
|
|
|
/* Page down */
|
|
if (keysym == 0xFF56) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
guac_terminal_scroll_display_down(term, term->term_height);
|
|
pthread_mutex_unlock(&(term->lock));
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
/* Reset scroll */
|
|
if (term->scroll_offset != 0) {
|
|
pthread_mutex_lock(&(term->lock));
|
|
guac_terminal_scroll_display_down(term, term->scroll_offset);
|
|
pthread_mutex_unlock(&(term->lock));
|
|
}
|
|
|
|
/* If alt being held, also send escape character */
|
|
if (client_data->mod_alt)
|
|
return guac_terminal_send_string(term, "\x1B");
|
|
|
|
/* Translate Ctrl+letter to control code */
|
|
if (client_data->mod_ctrl) {
|
|
|
|
char data;
|
|
|
|
/* If valid control code, send it */
|
|
if (keysym >= 'A' && keysym <= 'Z')
|
|
data = (char) (keysym - 'A' + 1);
|
|
else if (keysym >= 'a' && keysym <= 'z')
|
|
data = (char) (keysym - 'a' + 1);
|
|
|
|
/* Otherwise ignore */
|
|
else
|
|
return 0;
|
|
|
|
return guac_terminal_send_data(term, &data, 1);
|
|
|
|
}
|
|
|
|
/* Translate Unicode to UTF-8 */
|
|
else if ((keysym >= 0x00 && keysym <= 0xFF) || ((keysym & 0xFFFF0000) == 0x01000000)) {
|
|
|
|
int length;
|
|
char data[5];
|
|
|
|
length = guac_terminal_encode_utf8(keysym & 0xFFFF, data);
|
|
return guac_terminal_send_data(term, data, length);
|
|
|
|
}
|
|
|
|
/* Non-printable keys */
|
|
else {
|
|
|
|
if (keysym == 0xFF08) return guac_terminal_send_string(term, "\x7F"); /* Backspace */
|
|
if (keysym == 0xFF09) return guac_terminal_send_string(term, "\x09"); /* Tab */
|
|
if (keysym == 0xFF0D) return guac_terminal_send_string(term, "\x0D"); /* Enter */
|
|
if (keysym == 0xFF1B) return guac_terminal_send_string(term, "\x1B"); /* Esc */
|
|
|
|
if (keysym == 0xFF50) return guac_terminal_send_string(term, "\x1B[1~"); /* Home */
|
|
|
|
/* Arrow keys w/ application cursor */
|
|
if (term->application_cursor_keys) {
|
|
if (keysym == 0xFF51) return guac_terminal_send_string(term, "\x1BOD"); /* Left */
|
|
if (keysym == 0xFF52) return guac_terminal_send_string(term, "\x1BOA"); /* Up */
|
|
if (keysym == 0xFF53) return guac_terminal_send_string(term, "\x1BOC"); /* Right */
|
|
if (keysym == 0xFF54) return guac_terminal_send_string(term, "\x1BOB"); /* Down */
|
|
}
|
|
else {
|
|
if (keysym == 0xFF51) return guac_terminal_send_string(term, "\x1B[D"); /* Left */
|
|
if (keysym == 0xFF52) return guac_terminal_send_string(term, "\x1B[A"); /* Up */
|
|
if (keysym == 0xFF53) return guac_terminal_send_string(term, "\x1B[C"); /* Right */
|
|
if (keysym == 0xFF54) return guac_terminal_send_string(term, "\x1B[B"); /* Down */
|
|
}
|
|
|
|
if (keysym == 0xFF55) return guac_terminal_send_string(term, "\x1B[5~"); /* Page up */
|
|
if (keysym == 0xFF56) return guac_terminal_send_string(term, "\x1B[6~"); /* Page down */
|
|
if (keysym == 0xFF57) return guac_terminal_send_string(term, "\x1B[4~"); /* End */
|
|
|
|
if (keysym == 0xFF63) return guac_terminal_send_string(term, "\x1B[2~"); /* Insert */
|
|
|
|
if (keysym == 0xFFBE) return guac_terminal_send_string(term, "\x1B[[A"); /* F1 */
|
|
if (keysym == 0xFFBF) return guac_terminal_send_string(term, "\x1B[[B"); /* F2 */
|
|
if (keysym == 0xFFC0) return guac_terminal_send_string(term, "\x1B[[C"); /* F3 */
|
|
if (keysym == 0xFFC1) return guac_terminal_send_string(term, "\x1B[[D"); /* F4 */
|
|
if (keysym == 0xFFC2) return guac_terminal_send_string(term, "\x1B[[E"); /* F5 */
|
|
|
|
if (keysym == 0xFFC3) return guac_terminal_send_string(term, "\x1B[17~"); /* F6 */
|
|
if (keysym == 0xFFC4) return guac_terminal_send_string(term, "\x1B[18~"); /* F7 */
|
|
if (keysym == 0xFFC5) return guac_terminal_send_string(term, "\x1B[19~"); /* F8 */
|
|
if (keysym == 0xFFC6) return guac_terminal_send_string(term, "\x1B[20~"); /* F9 */
|
|
if (keysym == 0xFFC7) return guac_terminal_send_string(term, "\x1B[21~"); /* F10 */
|
|
if (keysym == 0xFFC8) return guac_terminal_send_string(term, "\x1B[22~"); /* F11 */
|
|
if (keysym == 0xFFC9) return guac_terminal_send_string(term, "\x1B[23~"); /* F12 */
|
|
|
|
if (keysym == 0xFFFF) return guac_terminal_send_string(term, "\x1B[3~"); /* Delete */
|
|
|
|
/* Ignore unknown keys */
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int ssh_guac_client_size_handler(guac_client* client, int width, int height) {
|
|
|
|
/* Get terminal */
|
|
ssh_guac_client_data* guac_client_data = (ssh_guac_client_data*) client->data;
|
|
guac_terminal* terminal = guac_client_data->term;
|
|
|
|
/* Calculate dimensions */
|
|
int rows = height / terminal->display->char_height;
|
|
int columns = width / terminal->display->char_width;
|
|
|
|
pthread_mutex_lock(&(terminal->lock));
|
|
|
|
/* If size has changed */
|
|
if (columns != terminal->term_width || rows != terminal->term_height) {
|
|
|
|
/* Resize terminal */
|
|
guac_terminal_resize(terminal, columns, rows);
|
|
|
|
/* Update SSH pty size if connected */
|
|
if (guac_client_data->term_channel != NULL)
|
|
libssh2_channel_request_pty_size(guac_client_data->term_channel,
|
|
terminal->term_width, terminal->term_height);
|
|
|
|
/* Reset scroll region */
|
|
terminal->scroll_end = rows - 1;
|
|
|
|
guac_terminal_display_flush(terminal->display);
|
|
guac_protocol_send_sync(terminal->client->socket,
|
|
client->last_sent_timestamp);
|
|
guac_socket_flush(terminal->client->socket);
|
|
}
|
|
|
|
pthread_mutex_unlock(&(terminal->lock));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ssh_guac_client_free_handler(guac_client* client) {
|
|
|
|
ssh_guac_client_data* guac_client_data = (ssh_guac_client_data*) client->data;
|
|
|
|
/* Close SSH channel */
|
|
if (guac_client_data->term_channel != NULL) {
|
|
libssh2_channel_send_eof(guac_client_data->term_channel);
|
|
libssh2_channel_close(guac_client_data->term_channel);
|
|
}
|
|
|
|
/* Free terminal */
|
|
guac_terminal_free(guac_client_data->term);
|
|
pthread_join(guac_client_data->client_thread, NULL);
|
|
|
|
/* Free channels */
|
|
libssh2_channel_free(guac_client_data->term_channel);
|
|
|
|
/* Clean up SFTP */
|
|
if (guac_client_data->sftp_session)
|
|
libssh2_sftp_shutdown(guac_client_data->sftp_session);
|
|
|
|
if (guac_client_data->sftp_ssh_session) {
|
|
libssh2_session_disconnect(guac_client_data->sftp_ssh_session, "Bye");
|
|
libssh2_session_free(guac_client_data->sftp_ssh_session);
|
|
}
|
|
|
|
/* Free session */
|
|
if (guac_client_data->session != NULL)
|
|
libssh2_session_free(guac_client_data->session);
|
|
|
|
/* Free auth key */
|
|
if (guac_client_data->key != NULL)
|
|
ssh_key_free(guac_client_data->key);
|
|
|
|
/* Free clipboard data */
|
|
free(guac_client_data->clipboard_data);
|
|
|
|
/* Free cursors */
|
|
guac_ssh_cursor_free(client, guac_client_data->ibar_cursor);
|
|
guac_ssh_cursor_free(client, guac_client_data->blank_cursor);
|
|
|
|
/* Free generic data struct */
|
|
free(client->data);
|
|
|
|
return 0;
|
|
}
|
|
|