/* ***** 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 "ssh_handlers.h" #include "ssh_client.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]; ssh_channel channels[2], out_channels[2]; struct timeval timeout; fd_set fds; int ssh_fd; /* Channels to read */ channels[0] = client_data->term_channel; channels[1] = NULL; /* Get SSH file descriptor */ ssh_fd = ssh_get_fd(client_data->session); /* Build fd_set */ FD_ZERO(&fds); FD_SET(ssh_fd, &fds); /* Time to wait */ timeout.tv_sec = 1; timeout.tv_usec = 0; /* Wait for data to be available */ if (ssh_select(channels, out_channels, ssh_fd+1, &fds, &timeout) == SSH_OK) { int bytes_read = 0; /* Clear cursor */ guac_terminal_toggle_reverse(client_data->term, client_data->term->cursor_row, client_data->term->cursor_col); /* While data available, write to terminal */ while (channel_is_open(client_data->term_channel) && !channel_is_eof(client_data->term_channel) && (bytes_read = channel_read_nonblocking(client_data->term_channel, buffer, sizeof(buffer), 0)) > 0) { if (guac_terminal_write(client_data->term, buffer, bytes_read) || guac_socket_flush(socket)) return 1; } /* Notify on error */ if (bytes_read < 0) { guac_protocol_send_error(socket, "Error reading data."); guac_socket_flush(socket); return 1; } /* Draw cursor */ guac_terminal_toggle_reverse(client_data->term, client_data->term->cursor_row, client_data->term->cursor_col); /* Flush terminal delta */ guac_terminal_delta_flush(client_data->term->delta, client_data->term); } 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; /* Determine which buttons were just released */ int released_mask = client_data->mouse_mask & ~mask; client_data->mouse_mask = mask; /* 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 channel_write(client_data->term_channel, client_data->clipboard_data, length); } /* Scroll up if wheel moved up */ if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_UP) { /* STUB */ guac_client_log_info(client, "stub: scroll up"); } /* Scroll down if wheel moved down */ if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_DOWN) { /* STUB */ guac_client_log_info(client, "stub: scroll down"); } 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; /* Track modifiers */ if (keysym == 0xFFE3) { client_data->mod_ctrl = pressed; } /* If key pressed */ else if (pressed) { /* If simple ASCII key */ if (keysym >= 0x00 && keysym <= 0xFF) { char data = (char) keysym; /* Handle Ctrl modifier */ if (client_data->mod_ctrl) { if (keysym >= 'A' && keysym <= 'Z') data = (char) (keysym - 'A' + 1); else if (keysym >= 'a' && keysym <= 'z') data = (char) (keysym - 'a' + 1); } return channel_write(client_data->term_channel, &data, 1); } else { int length = 0; const char* data = NULL; if (keysym == 0xFF08) { data = "\x08"; length = 1; } else if (keysym == 0xFF09) { data = "\x09"; length = 1; } else if (keysym == 0xFF0D) { data = "\x0D"; length = 1; } else if (keysym == 0xFF1B) { data = "\x1B"; length = 1; } /* Arrow keys */ else if (keysym == 0xFF52) { data = "\x1B\x5B""A"; length = 3; } else if (keysym == 0xFF54) { data = "\x1B\x5B""B"; length = 3; } else if (keysym == 0xFF53) { data = "\x1B\x5B""C"; length = 3; } else if (keysym == 0xFF51) { data = "\x1B\x5B""D"; length = 3; } /* Ignore other keys */ else return 0; return channel_write(client_data->term_channel, data, length); } } return 0; } int ssh_guac_client_free_handler(guac_client* client) { ssh_guac_client_data* guac_client_data = (ssh_guac_client_data*) client->data; /* Free terminal */ guac_terminal_free(guac_client_data->term); /* Free clipboard data */ free(guac_client_data->clipboard_data); /* Free generic data struct */ free(client->data); return 0; }