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/* |
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rdesktop: A Remote Desktop Protocol client. |
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Entrypoint and utility functions |
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Copyright (C) Matthew Chapman 1999-2001 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include <stdlib.h> /* malloc realloc free */ |
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#include <stdarg.h> /* va_list va_start va_end */ |
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#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */ |
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#include <fcntl.h> /* open */ |
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#include <pwd.h> /* getpwuid */ |
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#include <limits.h> /* PATH_MAX */ |
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#include <sys/stat.h> /* stat */ |
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#include <sys/time.h> /* gettimeofday */ |
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#include <sys/times.h> /* times */ |
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#include "rdesktop.h" |
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|
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char title[32]; |
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char username[16]; |
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char hostname[16]; |
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char keymapname[16]; |
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int keylayout = 0x409; /* Defaults to US keyboard layout */ |
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int width; |
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int height; |
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int tcp_port_rdp = TCP_PORT_RDP; |
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BOOL bitmap_compression = True; |
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BOOL sendmotion = True; |
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BOOL orders = True; |
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BOOL licence = True; |
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BOOL encryption = True; |
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BOOL desktop_save = True; |
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BOOL fullscreen = False; |
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BOOL grab_keyboard = True; |
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|
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/* Display usage information */ |
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static void |
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usage(char *program) |
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{ |
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printf("Usage: %s [options] server\n", program); |
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printf(" -u: user name\n"); |
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printf(" -d: domain\n"); |
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printf(" -s: shell\n"); |
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printf(" -c: working directory\n"); |
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printf(" -p: password (autologon)\n"); |
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printf(" -P: askpass-program (autologon)\n"); |
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printf(" -n: client hostname\n"); |
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printf(" -k: keyboard layout on terminal server (us,sv,gr etc.)\n"); |
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printf(" -g: desktop geometry (WxH)\n"); |
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printf(" -f: full-screen mode\n"); |
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printf(" -b: force bitmap updates\n"); |
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printf(" -e: disable encryption (French TS)\n"); |
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printf(" -m: do not send motion events\n"); |
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printf(" -l: do not request licence\n"); |
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printf(" -t: rdp tcp port\n"); |
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printf(" -K: keep window manager key bindings\n"); |
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} |
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|
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/* Client program */ |
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int |
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main(int argc, char *argv[]) |
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{ |
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char fullhostname[64]; |
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char domain[16]; |
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char password[16]; |
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char *askpass_result; |
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char shell[32]; |
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char directory[32]; |
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struct passwd *pw; |
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char *server, *p; |
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uint32 flags; |
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int c; |
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|
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printf("rdesktop: A Remote Desktop Protocol client.\n"); |
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printf("Version " VERSION ". Copyright (C) 1999-2001 Matt Chapman.\n"); |
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printf("See http://www.rdesktop.org/ for more information.\n\n"); |
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|
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flags = RDP_LOGON_NORMAL; |
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domain[0] = password[0] = shell[0] = directory[0] = 0; |
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strcpy(keymapname, "us"); |
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|
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while ((c = getopt(argc, argv, "u:d:s:c:p:P:n:k:g:t:fbemlKh?")) != -1) |
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{ |
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switch (c) |
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{ |
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case 'u': |
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STRNCPY(username, optarg, sizeof(username)); |
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break; |
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|
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case 'd': |
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STRNCPY(domain, optarg, sizeof(domain)); |
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break; |
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|
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case 's': |
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STRNCPY(shell, optarg, sizeof(shell)); |
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break; |
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|
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case 'c': |
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STRNCPY(directory, optarg, sizeof(directory)); |
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break; |
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|
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case 'p': |
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STRNCPY(password, optarg, sizeof(password)); |
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flags |= RDP_LOGON_AUTO; |
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break; |
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|
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case 'P': |
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askpass_result = askpass(optarg, "Enter password"); |
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if (askpass_result == NULL) |
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exit(1); |
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|
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STRNCPY(password, askpass_result, sizeof(password)); |
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free(askpass_result); |
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flags |= RDP_LOGON_AUTO; |
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break; |
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|
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case 'n': |
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STRNCPY(hostname, optarg, sizeof(hostname)); |
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break; |
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|
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case 'k': |
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STRNCPY(keymapname, optarg, sizeof(keymapname)); |
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break; |
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|
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case 'g': |
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width = strtol(optarg, &p, 10); |
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if (*p == 'x') |
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height = strtol(p + 1, NULL, 10); |
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|
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if ((width == 0) || (height == 0)) |
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{ |
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error("invalid geometry\n"); |
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return 1; |
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} |
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break; |
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|
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case 'f': |
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fullscreen = True; |
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break; |
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|
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case 'b': |
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orders = False; |
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break; |
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|
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case 'e': |
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encryption = False; |
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break; |
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|
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case 'm': |
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sendmotion = False; |
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break; |
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|
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case 'l': |
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licence = False; |
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break; |
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|
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case 't': |
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tcp_port_rdp = strtol(optarg, NULL, 10); |
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break; |
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|
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case 'K': |
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grab_keyboard = False; |
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break; |
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|
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case 'h': |
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case '?': |
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default: |
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usage(argv[0]); |
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return 1; |
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} |
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} |
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|
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if (argc - optind < 1) |
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{ |
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usage(argv[0]); |
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return 1; |
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} |
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|
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server = argv[optind]; |
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|
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if (username[0] == 0) |
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{ |
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pw = getpwuid(getuid()); |
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if ((pw == NULL) || (pw->pw_name == NULL)) |
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{ |
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error("could not determine username, use -u\n"); |
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return 1; |
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} |
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|
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STRNCPY(username, pw->pw_name, sizeof(username)); |
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} |
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|
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if (hostname[0] == 0) |
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{ |
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if (gethostname(fullhostname, sizeof(fullhostname)) == -1) |
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{ |
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error("could not determine local hostname, use -n\n"); |
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return 1; |
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} |
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|
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p = strchr(fullhostname, '.'); |
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if (p != NULL) |
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*p = 0; |
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|
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STRNCPY(hostname, fullhostname, sizeof(hostname)); |
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} |
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|
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if (!strcmp(password, "-")) |
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{ |
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p = getpass("Password: "); |
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if (p == NULL) |
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{ |
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error("failed to read password\n"); |
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return 0; |
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} |
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STRNCPY(password, p, sizeof(password)); |
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} |
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|
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if ((width == 0) || (height == 0)) |
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{ |
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width = 800; |
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height = 600; |
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} |
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else |
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{ |
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/* make sure width is a multiple of 4 */ |
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width = (width + 3) & ~3; |
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} |
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|
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strcpy(title, "rdesktop - "); |
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strncat(title, server, sizeof(title) - sizeof("rdesktop - ")); |
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|
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xkeymap_init1(); |
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if (!ui_init()) |
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return 1; |
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|
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if (!rdp_connect(server, flags, domain, password, shell, directory)) |
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return 1; |
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|
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printf("Connection successful.\n"); |
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|
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if (ui_create_window()) |
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{ |
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rdp_main_loop(); |
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ui_destroy_window(); |
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} |
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|
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printf("Disconnecting...\n"); |
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rdp_disconnect(); |
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return 0; |
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} |
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|
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/* Generate a 32-byte random for the secure transport code. */ |
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void |
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generate_random(uint8 * random) |
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{ |
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struct stat st; |
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struct tms tmsbuf; |
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uint32 *r = (uint32 *) random; |
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int fd; |
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|
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/* If we have a kernel random device, use it. */ |
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if (((fd = open("/dev/urandom", O_RDONLY)) != -1) |
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|| ((fd = open("/dev/random", O_RDONLY)) != -1)) |
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{ |
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read(fd, random, 32); |
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close(fd); |
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return; |
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} |
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|
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/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
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r[0] = (getpid()) | (getppid() << 16); |
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r[1] = (getuid()) | (getgid() << 16); |
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r[2] = times(&tmsbuf); /* system uptime (clocks) */ |
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gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */ |
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stat("/tmp", &st); |
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r[5] = st.st_atime; |
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r[6] = st.st_mtime; |
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r[7] = st.st_ctime; |
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} |
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|
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/* malloc; exit if out of memory */ |
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void * |
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xmalloc(int size) |
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{ |
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void *mem = malloc(size); |
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if (mem == NULL) |
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{ |
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error("xmalloc %d\n", size); |
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exit(1); |
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} |
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return mem; |
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} |
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|
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/* realloc; exit if out of memory */ |
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void * |
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xrealloc(void *oldmem, int size) |
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{ |
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void *mem = realloc(oldmem, size); |
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if (mem == NULL) |
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{ |
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error("xrealloc %d\n", size); |
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exit(1); |
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} |
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return mem; |
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} |
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|
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/* free */ |
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void |
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xfree(void *mem) |
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{ |
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free(mem); |
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} |
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|
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/* report an error */ |
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void |
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error(char *format, ...) |
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{ |
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va_list ap; |
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|
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fprintf(stderr, "ERROR: "); |
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|
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va_start(ap, format); |
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vfprintf(stderr, format, ap); |
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va_end(ap); |
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} |
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|
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/* report an unimplemented protocol feature */ |
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void |
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unimpl(char *format, ...) |
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{ |
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va_list ap; |
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|
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fprintf(stderr, "NOT IMPLEMENTED: "); |
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|
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va_start(ap, format); |
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vfprintf(stderr, format, ap); |
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va_end(ap); |
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} |
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|
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/* produce a hex dump */ |
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void |
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hexdump(unsigned char *p, unsigned int len) |
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{ |
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unsigned char *line = p; |
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unsigned int thisline, offset = 0; |
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int i; |
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|
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while (offset < len) |
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{ |
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printf("%04x ", offset); |
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thisline = len - offset; |
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if (thisline > 16) |
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thisline = 16; |
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|
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for (i = 0; i < thisline; i++) |
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printf("%02x ", line[i]); |
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|
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for (; i < 16; i++) |
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printf(" "); |
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|
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for (i = 0; i < thisline; i++) |
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printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); |
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|
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printf("\n"); |
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offset += thisline; |
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line += thisline; |
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} |
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} |
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|
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int |
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load_licence(unsigned char **data) |
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{ |
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char path[PATH_MAX]; |
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char *home; |
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struct stat st; |
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int fd; |
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|
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home = getenv("HOME"); |
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if (home == NULL) |
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return -1; |
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|
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STRNCPY(path, home, sizeof(path)); |
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strncat(path, "/.rdesktop/licence", sizeof(path) - strlen(path) - 1); |
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|
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fd = open(path, O_RDONLY); |
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if (fd == -1) |
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return -1; |
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|
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if (fstat(fd, &st)) |
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return -1; |
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|
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*data = xmalloc(st.st_size); |
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return read(fd, *data, st.st_size); |
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} |
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|
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void |
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save_licence(unsigned char *data, int length) |
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{ |
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char path[PATH_MAX]; |
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char *home; |
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int fd; |
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|
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home = getenv("HOME"); |
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if (home == NULL) |
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return; |
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|
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STRNCPY(path, home, sizeof(path)); |
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strncat(path, "/.rdesktop", sizeof(path) - strlen(path) - 1); |
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mkdir(path, 0700); |
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|
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strncat(path, "/licence", sizeof(path) - strlen(path) - 1); |
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|
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fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
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if (fd == -1) |
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{ |
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perror("open"); |
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return; |
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} |
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|
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write(fd, data, length); |
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close(fd); |
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} |
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