/* ***** 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 * * 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 #include #include #include #include #include #include #include #include #include #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_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 mouse button up */ if ((released_mask & GUAC_CLIENT_MOUSE_RIGHT) && client_data->clipboard_data != NULL) { int length = strlen(client_data->clipboard_data); if (length) return guac_terminal_send_data(term, client_data->clipboard_data, length); } /* 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; /* If key pressed */ else if (pressed) { /* 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, "\x1BOH"); /* 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;3~"); /* Page up */ if (keysym == 0xFF56) return guac_terminal_send_string(term, "\x1B[6;3~"); /* Page down */ if (keysym == 0xFF57) return guac_terminal_send_string(term, "\x1BOF"); /* End */ if (keysym == 0xFF63) return guac_terminal_send_string(term, "\x1B[2~"); /* Insert */ if (keysym == 0xFFBE) return guac_terminal_send_string(term, "\x1BOP"); /* F1 */ if (keysym == 0xFFBF) return guac_terminal_send_string(term, "\x1BOQ"); /* F2 */ if (keysym == 0xFFC0) return guac_terminal_send_string(term, "\x1BOR"); /* F3 */ if (keysym == 0xFFC1) return guac_terminal_send_string(term, "\x1BOS"); /* F4 */ if (keysym == 0xFFC2) return guac_terminal_send_string(term, "\x1B[15~"); /* 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) channel_change_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_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 */ ssh_channel_close(guac_client_data->term_channel); ssh_channel_send_eof(guac_client_data->term_channel); /* Free terminal */ guac_terminal_free(guac_client_data->term); pthread_join(guac_client_data->client_thread, NULL); /* Free channels */ ssh_channel_free(guac_client_data->term_channel); /* Free session */ ssh_free(guac_client_data->session); /* 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; }