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/* |
| 2 |
rdesktop: A Remote Desktop Protocol client. |
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Entrypoint and utility functions |
| 4 |
Copyright (C) Matthew Chapman 1999-2002 |
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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 |
| 8 |
the Free Software Foundation; either version 2 of the License, or |
| 9 |
(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 <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 <termios.h> /* tcgetattr tcsetattr */ |
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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 = 800; |
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int height = 600; |
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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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fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n"); |
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fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2002 Matt Chapman.\n"); |
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fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n"); |
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|
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fprintf(stderr, "Usage: %s [options] server\n", program); |
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fprintf(stderr, " -u: user name\n"); |
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fprintf(stderr, " -d: domain\n"); |
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fprintf(stderr, " -s: shell\n"); |
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fprintf(stderr, " -c: working directory\n"); |
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fprintf(stderr, " -p: password (- to prompt)\n"); |
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fprintf(stderr, " -P: askpass-program (autologon)\n"); |
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fprintf(stderr, " -n: client hostname\n"); |
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fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr etc.)\n"); |
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fprintf(stderr, " -g: desktop geometry (WxH)\n"); |
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fprintf(stderr, " -f: full-screen mode\n"); |
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fprintf(stderr, " -b: force bitmap updates\n"); |
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fprintf(stderr, " -e: disable encryption (French TS)\n"); |
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fprintf(stderr, " -m: do not send motion events\n"); |
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fprintf(stderr, " -l: do not request licence\n"); |
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fprintf(stderr, " -t: rdp tcp port\n"); |
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fprintf(stderr, " -K: keep window manager key bindings\n"); |
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fprintf(stderr, " -w: window title\n"); |
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} |
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|
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static BOOL |
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read_password(char *password, int size) |
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{ |
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struct termios tios; |
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BOOL ret = False; |
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int istty = 0; |
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char *p; |
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|
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if (tcgetattr(STDIN_FILENO, &tios) == 0) |
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{ |
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fprintf(stderr, "Password: "); |
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tios.c_lflag &= ~ECHO; |
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tcsetattr(STDIN_FILENO, TCSANOW, &tios); |
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istty = 1; |
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} |
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|
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if (fgets(password, size, stdin) != NULL) |
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{ |
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ret = True; |
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|
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/* strip final newline */ |
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p = strchr(password, '\n'); |
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if (p != NULL) |
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*p = 0; |
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} |
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|
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if (istty) |
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{ |
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tios.c_lflag |= ECHO; |
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tcsetattr(STDIN_FILENO, TCSANOW, &tios); |
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fprintf(stderr, "\n"); |
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} |
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|
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return ret; |
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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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BOOL prompt_password; |
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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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flags = RDP_LOGON_NORMAL; |
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prompt_password = False; |
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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:fbemlKw:h?")) != -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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if ((optarg[0] == '-') && (optarg[1] == 0)) |
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{ |
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prompt_password = True; |
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break; |
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} |
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|
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STRNCPY(password, optarg, sizeof(password)); |
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flags |= RDP_LOGON_AUTO; |
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|
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/* try to overwrite argument so it won't appear in ps */ |
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p = optarg; |
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while (*p) |
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*(p++) = 'X'; |
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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 'w': |
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strncpy(title, optarg, sizeof(title)); |
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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 (prompt_password && read_password(password, sizeof(password))) |
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flags |= RDP_LOGON_AUTO; |
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|
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if (title[0] == 0) |
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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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|
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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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DEBUG(("Connection successful.\n")); |
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memset(password, 0, sizeof(password)); |
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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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DEBUG(("Disconnecting...\n")); |
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rdp_disconnect(); |
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ui_deinit(); |
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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 */ |
| 335 |
void * |
| 336 |
xmalloc(int size) |
| 337 |
{ |
| 338 |
void *mem = malloc(size); |
| 339 |
if (mem == NULL) |
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{ |
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error("xmalloc %d\n", size); |
| 342 |
exit(1); |
| 343 |
} |
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return mem; |
| 345 |
} |
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|
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/* realloc; exit if out of memory */ |
| 348 |
void * |
| 349 |
xrealloc(void *oldmem, int size) |
| 350 |
{ |
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void *mem = realloc(oldmem, size); |
| 352 |
if (mem == NULL) |
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{ |
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error("xrealloc %d\n", size); |
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exit(1); |
| 356 |
} |
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return mem; |
| 358 |
} |
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|
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/* free */ |
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void |
| 362 |
xfree(void *mem) |
| 363 |
{ |
| 364 |
free(mem); |
| 365 |
} |
| 366 |
|
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/* report an error */ |
| 368 |
void |
| 369 |
error(char *format, ...) |
| 370 |
{ |
| 371 |
va_list ap; |
| 372 |
|
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fprintf(stderr, "ERROR: "); |
| 374 |
|
| 375 |
va_start(ap, format); |
| 376 |
vfprintf(stderr, format, ap); |
| 377 |
va_end(ap); |
| 378 |
} |
| 379 |
|
| 380 |
/* report an unimplemented protocol feature */ |
| 381 |
void |
| 382 |
unimpl(char *format, ...) |
| 383 |
{ |
| 384 |
va_list ap; |
| 385 |
|
| 386 |
fprintf(stderr, "NOT IMPLEMENTED: "); |
| 387 |
|
| 388 |
va_start(ap, format); |
| 389 |
vfprintf(stderr, format, ap); |
| 390 |
va_end(ap); |
| 391 |
} |
| 392 |
|
| 393 |
/* produce a hex dump */ |
| 394 |
void |
| 395 |
hexdump(unsigned char *p, unsigned int len) |
| 396 |
{ |
| 397 |
unsigned char *line = p; |
| 398 |
unsigned int thisline, offset = 0; |
| 399 |
int i; |
| 400 |
|
| 401 |
while (offset < len) |
| 402 |
{ |
| 403 |
printf("%04x ", offset); |
| 404 |
thisline = len - offset; |
| 405 |
if (thisline > 16) |
| 406 |
thisline = 16; |
| 407 |
|
| 408 |
for (i = 0; i < thisline; i++) |
| 409 |
printf("%02x ", line[i]); |
| 410 |
|
| 411 |
for (; i < 16; i++) |
| 412 |
printf(" "); |
| 413 |
|
| 414 |
for (i = 0; i < thisline; i++) |
| 415 |
printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); |
| 416 |
|
| 417 |
printf("\n"); |
| 418 |
offset += thisline; |
| 419 |
line += thisline; |
| 420 |
} |
| 421 |
} |
| 422 |
|
| 423 |
#ifdef SAVE_LICENCE |
| 424 |
int |
| 425 |
load_licence(unsigned char **data) |
| 426 |
{ |
| 427 |
char path[PATH_MAX]; |
| 428 |
char *home; |
| 429 |
struct stat st; |
| 430 |
int fd; |
| 431 |
|
| 432 |
home = getenv("HOME"); |
| 433 |
if (home == NULL) |
| 434 |
return -1; |
| 435 |
|
| 436 |
STRNCPY(path, home, sizeof(path)); |
| 437 |
strncat(path, "/.rdesktop/licence", sizeof(path) - strlen(path) - 1); |
| 438 |
|
| 439 |
fd = open(path, O_RDONLY); |
| 440 |
if (fd == -1) |
| 441 |
return -1; |
| 442 |
|
| 443 |
if (fstat(fd, &st)) |
| 444 |
return -1; |
| 445 |
|
| 446 |
*data = xmalloc(st.st_size); |
| 447 |
return read(fd, *data, st.st_size); |
| 448 |
} |
| 449 |
|
| 450 |
void |
| 451 |
save_licence(unsigned char *data, int length) |
| 452 |
{ |
| 453 |
char path[PATH_MAX]; |
| 454 |
char *home; |
| 455 |
int fd; |
| 456 |
|
| 457 |
home = getenv("HOME"); |
| 458 |
if (home == NULL) |
| 459 |
return; |
| 460 |
|
| 461 |
STRNCPY(path, home, sizeof(path)); |
| 462 |
strncat(path, "/.rdesktop", sizeof(path) - strlen(path) - 1); |
| 463 |
mkdir(path, 0700); |
| 464 |
|
| 465 |
strncat(path, "/licence", sizeof(path) - strlen(path) - 1); |
| 466 |
|
| 467 |
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
| 468 |
if (fd == -1) |
| 469 |
{ |
| 470 |
perror("open"); |
| 471 |
return; |
| 472 |
} |
| 473 |
|
| 474 |
write(fd, data, length); |
| 475 |
close(fd); |
| 476 |
} |
| 477 |
#endif |
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