/[rdesktop]/sourceforge.net/branches/seamlessrdp-branch/rdesktop/rdesktop.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Revision 738 - (show annotations)
Mon Jul 12 21:07:39 2004 UTC (19 years, 10 months ago) by astrand
Original Path: sourceforge.net/trunk/rdesktop/rdesktop.c
File MIME type: text/plain
File size: 25733 byte(s)
Indent fixes

1 /* -*- c-basic-offset: 8 -*-
2 rdesktop: A Remote Desktop Protocol client.
3 Entrypoint and utility functions
4 Copyright (C) Matthew Chapman 1999-2003
5
6 This program is free software; you can redistribute it and/or modify
7 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.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <stdarg.h> /* va_list va_start va_end */
22 #include <unistd.h> /* read close getuid getgid getpid getppid gethostname */
23 #include <fcntl.h> /* open */
24 #include <pwd.h> /* getpwuid */
25 #include <termios.h> /* tcgetattr tcsetattr */
26 #include <sys/stat.h> /* stat */
27 #include <sys/time.h> /* gettimeofday */
28 #include <sys/times.h> /* times */
29 #include <ctype.h> /* toupper */
30 #include <errno.h>
31 #include "rdesktop.h"
32
33 #ifdef EGD_SOCKET
34 #include <sys/socket.h> /* socket connect */
35 #include <sys/un.h> /* sockaddr_un */
36 #endif
37
38 #ifdef WITH_OPENSSL
39 #include <openssl/md5.h>
40 #else
41 #include "crypto/md5.h"
42 #endif
43
44 char g_title[64] = "";
45 char g_username[64];
46 char g_hostname[16];
47 char keymapname[16];
48 int g_keylayout = 0x409; /* Defaults to US keyboard layout */
49
50 int g_width = 800; /* width is special: If 0, the
51 geometry will be fetched from
52 _NET_WORKAREA. If negative,
53 absolute value specifies the
54 percent of the whole screen. */
55 int g_height = 600;
56 extern int g_tcp_port_rdp;
57 int g_server_bpp = 8;
58 int g_win_button_size = 0; /* If zero, disable single app mode */
59 BOOL g_bitmap_compression = True;
60 BOOL g_sendmotion = True;
61 BOOL g_bitmap_cache = True;
62 BOOL g_bitmap_cache_persist_enable = False;
63 BOOL g_bitmap_cache_precache = True;
64 BOOL g_encryption = True;
65 BOOL packet_encryption = True;
66 BOOL g_desktop_save = True;
67 BOOL g_fullscreen = False;
68 BOOL g_grab_keyboard = True;
69 BOOL g_hide_decorations = False;
70 BOOL g_use_rdp5 = True;
71 BOOL g_console_session = False;
72 BOOL g_numlock_sync = False;
73 BOOL g_owncolmap = False;
74 BOOL g_ownbackstore = True; /* We can't rely on external BackingStore */
75 uint32 g_embed_wnd;
76 uint32 g_rdp5_performanceflags =
77 RDP5_NO_WALLPAPER | RDP5_NO_FULLWINDOWDRAG | RDP5_NO_MENUANIMATIONS;
78
79 #ifdef WITH_RDPSND
80 BOOL g_rdpsnd = False;
81 #endif
82
83 extern RDPDR_DEVICE g_rdpdr_device[];
84 extern uint32 g_num_devices;
85 extern char *g_rdpdr_clientname;
86
87 #ifdef RDP2VNC
88 extern int rfb_port;
89 extern int defer_time;
90 void
91 rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password,
92 char *shell, char *directory);
93 #endif
94 /* Display usage information */
95 static void
96 usage(char *program)
97 {
98 fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
99 fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
100 fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
101
102 fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
103 #ifdef RDP2VNC
104 fprintf(stderr, " -V: vnc port\n");
105 fprintf(stderr, " -Q: defer time (ms)\n");
106 #endif
107 fprintf(stderr, " -u: user name\n");
108 fprintf(stderr, " -d: domain\n");
109 fprintf(stderr, " -s: shell\n");
110 fprintf(stderr, " -c: working directory\n");
111 fprintf(stderr, " -p: password (- to prompt)\n");
112 fprintf(stderr, " -n: client hostname\n");
113 fprintf(stderr, " -k: keyboard layout on server (en-us, de, sv, etc.)\n");
114 fprintf(stderr, " -g: desktop geometry (WxH)\n");
115 fprintf(stderr, " -f: full-screen mode\n");
116 fprintf(stderr, " -b: force bitmap updates\n");
117 fprintf(stderr, " -B: use BackingStore of X-server (if available)\n");
118 fprintf(stderr, " -e: disable encryption (French TS)\n");
119 fprintf(stderr, " -E: disable encryption from client to server\n");
120 fprintf(stderr, " -m: do not send motion events\n");
121 fprintf(stderr, " -C: use private colour map\n");
122 fprintf(stderr, " -D: hide window manager decorations\n");
123 fprintf(stderr, " -K: keep window manager key bindings\n");
124 fprintf(stderr, " -S: caption button size (single application mode)\n");
125 fprintf(stderr, " -T: window title\n");
126 fprintf(stderr, " -N: enable numlock syncronization\n");
127 fprintf(stderr, " -X: embed into another window with a given id.\n");
128 fprintf(stderr, " -a: connection colour depth\n");
129 fprintf(stderr, " -x: RDP5 experience (m[odem 28.8], b[roadband], l[an] or hex nr.)\n");
130 fprintf(stderr, " -P: use persistent bitmap caching\n");
131 fprintf(stderr, " -r: enable specified device redirection (this flag can be repeated)\n");
132 fprintf(stderr,
133 " '-r comport:COM1=/dev/ttyS0': enable serial redirection of /dev/ttyS0 to COM1\n");
134 fprintf(stderr, " or COM1=/dev/ttyS0,COM2=/dev/ttyS1\n");
135 fprintf(stderr,
136 " '-r disk:A=/mnt/floppy': enable redirection of /mnt/floppy to A:\n");
137 fprintf(stderr, " or A=/mnt/floppy,D=/mnt/cdrom'\n");
138 fprintf(stderr, " '-r clientname=<client name>': Set the client name displayed\n");
139 fprintf(stderr, " for redirected disks\n");
140 fprintf(stderr,
141 " '-r lptport:LPT1=/dev/lp0': enable parallel redirection of /dev/lp0 to LPT1\n");
142 fprintf(stderr, " or LPT1=/dev/lp0,LPT2=/dev/lp1\n");
143 fprintf(stderr, " '-r printer:mydeskjet': enable printer redirection\n");
144 fprintf(stderr,
145 " or mydeskjet=\"HP LaserJet IIIP\" to enter server driver as well\n");
146 fprintf(stderr, " '-r sound:[local|off|remote]': enable sound redirection\n");
147 fprintf(stderr, " remote would leave sound on server\n");
148 fprintf(stderr, " -0: attach to console\n");
149 fprintf(stderr, " -4: use RDP version 4\n");
150 fprintf(stderr, " -5: use RDP version 5 (default)\n");
151 }
152
153 void
154 print_disconnect_reason(uint16 reason)
155 {
156 char *text;
157
158 switch (reason)
159 {
160 case exDiscReasonNoInfo:
161 text = "No information available";
162 break;
163
164 case exDiscReasonAPIInitiatedDisconnect:
165 text = "Server initiated disconnect";
166 break;
167
168 case exDiscReasonAPIInitiatedLogoff:
169 text = "Server initiated logoff";
170 break;
171
172 case exDiscReasonServerIdleTimeout:
173 text = "Server idle timeout reached";
174 break;
175
176 case exDiscReasonServerLogonTimeout:
177 text = "Server logon timeout reached";
178 break;
179
180 case exDiscReasonReplacedByOtherConnection:
181 text = "The session was replaced";
182 break;
183
184 case exDiscReasonOutOfMemory:
185 text = "The server is out of memory";
186 break;
187
188 case exDiscReasonServerDeniedConnection:
189 text = "The server denied the connection";
190 break;
191
192 case exDiscReasonServerDeniedConnectionFips:
193 text = "The server denied the connection for security reason";
194 break;
195
196 case exDiscReasonLicenseInternal:
197 text = "Internal licensing error";
198 break;
199
200 case exDiscReasonLicenseNoLicenseServer:
201 text = "No license server available";
202 break;
203
204 case exDiscReasonLicenseNoLicense:
205 text = "No valid license available";
206 break;
207
208 case exDiscReasonLicenseErrClientMsg:
209 text = "Invalid licensing message";
210 break;
211
212 case exDiscReasonLicenseHwidDoesntMatchLicense:
213 text = "Hardware id doesn't match software license";
214 break;
215
216 case exDiscReasonLicenseErrClientLicense:
217 text = "Client license error";
218 break;
219
220 case exDiscReasonLicenseCantFinishProtocol:
221 text = "Network error during licensing protocol";
222 break;
223
224 case exDiscReasonLicenseClientEndedProtocol:
225 text = "Licensing protocol was not completed";
226 break;
227
228 case exDiscReasonLicenseErrClientEncryption:
229 text = "Incorrect client license enryption";
230 break;
231
232 case exDiscReasonLicenseCantUpgradeLicense:
233 text = "Can't upgrade license";
234 break;
235
236 case exDiscReasonLicenseNoRemoteConnections:
237 text = "The server is not licensed to accept remote connections";
238 break;
239
240 default:
241 if (reason > 0x1000 && reason < 0x7fff)
242 {
243 text = "Internal protocol error";
244 }
245 else
246 {
247 text = "Unknown reason";
248 }
249 }
250 fprintf(stderr, "disconnect: %s.\n", text);
251 }
252
253 static BOOL
254 read_password(char *password, int size)
255 {
256 struct termios tios;
257 BOOL ret = False;
258 int istty = 0;
259 char *p;
260
261 if (tcgetattr(STDIN_FILENO, &tios) == 0)
262 {
263 fprintf(stderr, "Password: ");
264 tios.c_lflag &= ~ECHO;
265 tcsetattr(STDIN_FILENO, TCSANOW, &tios);
266 istty = 1;
267 }
268
269 if (fgets(password, size, stdin) != NULL)
270 {
271 ret = True;
272
273 /* strip final newline */
274 p = strchr(password, '\n');
275 if (p != NULL)
276 *p = 0;
277 }
278
279 if (istty)
280 {
281 tios.c_lflag |= ECHO;
282 tcsetattr(STDIN_FILENO, TCSANOW, &tios);
283 fprintf(stderr, "\n");
284 }
285
286 return ret;
287 }
288
289 static void
290 parse_server_and_port(char *server)
291 {
292 char *p;
293 #ifdef IPv6
294 int addr_colons;
295 #endif
296
297 #ifdef IPv6
298 p = server;
299 addr_colons = 0;
300 while (*p)
301 if (*p++ == ':')
302 addr_colons++;
303 if (addr_colons >= 2)
304 {
305 /* numeric IPv6 style address format - [1:2:3::4]:port */
306 p = strchr(server, ']');
307 if (*server == '[' && p != NULL)
308 {
309 if (*(p + 1) == ':' && *(p + 2) != '\0')
310 g_tcp_port_rdp = strtol(p + 2, NULL, 10);
311 /* remove the port number and brackets from the address */
312 *p = '\0';
313 strncpy(server, server + 1, strlen(server));
314 }
315 }
316 else
317 {
318 /* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */
319 p = strchr(server, ':');
320 if (p != NULL)
321 {
322 g_tcp_port_rdp = strtol(p + 1, NULL, 10);
323 *p = 0;
324 }
325 }
326 #else /* no IPv6 support */
327 p = strchr(server, ':');
328 if (p != NULL)
329 {
330 g_tcp_port_rdp = strtol(p + 1, NULL, 10);
331 *p = 0;
332 }
333 #endif /* IPv6 */
334
335 }
336
337 /* Client program */
338 int
339 main(int argc, char *argv[])
340 {
341 char server[64];
342 char fullhostname[64];
343 char domain[16];
344 char password[64];
345 char shell[128];
346 char directory[32];
347 BOOL prompt_password, deactivated;
348 struct passwd *pw;
349 uint32 flags, ext_disc_reason = 0;
350 char *p;
351 int c;
352
353 int username_option = 0;
354
355 flags = RDP_LOGON_NORMAL;
356 prompt_password = False;
357 domain[0] = password[0] = shell[0] = directory[0] = 0;
358 strcpy(keymapname, "en-us");
359 g_embed_wnd = 0;
360
361 g_num_devices = 0;
362
363 #ifdef RDP2VNC
364 #define VNCOPT "V:Q:"
365 #else
366 #define VNCOPT
367 #endif
368
369 while ((c = getopt(argc, argv,
370 VNCOPT "u:d:s:c:p:n:k:g:fbBeEmCDKS:T:NX:a:x:Pr:045h?")) != -1)
371 {
372 switch (c)
373 {
374 #ifdef RDP2VNC
375 case 'V':
376 rfb_port = strtol(optarg, NULL, 10);
377 if (rfb_port < 100)
378 rfb_port += 5900;
379 break;
380
381 case 'Q':
382 defer_time = strtol(optarg, NULL, 10);
383 if (defer_time < 0)
384 defer_time = 0;
385 break;
386 #endif
387
388 case 'u':
389 STRNCPY(g_username, optarg, sizeof(g_username));
390 username_option = 1;
391 break;
392
393 case 'd':
394 STRNCPY(domain, optarg, sizeof(domain));
395 break;
396
397 case 's':
398 STRNCPY(shell, optarg, sizeof(shell));
399 break;
400
401 case 'c':
402 STRNCPY(directory, optarg, sizeof(directory));
403 break;
404
405 case 'p':
406 if ((optarg[0] == '-') && (optarg[1] == 0))
407 {
408 prompt_password = True;
409 break;
410 }
411
412 STRNCPY(password, optarg, sizeof(password));
413 flags |= RDP_LOGON_AUTO;
414
415 /* try to overwrite argument so it won't appear in ps */
416 p = optarg;
417 while (*p)
418 *(p++) = 'X';
419 break;
420
421 case 'n':
422 STRNCPY(g_hostname, optarg, sizeof(g_hostname));
423 break;
424
425 case 'k':
426 STRNCPY(keymapname, optarg, sizeof(keymapname));
427 break;
428
429 case 'g':
430 g_fullscreen = False;
431 if (!strcmp(optarg, "workarea"))
432 {
433 g_width = g_height = 0;
434 break;
435 }
436
437 g_width = strtol(optarg, &p, 10);
438 if (g_width <= 0)
439 {
440 error("invalid geometry\n");
441 return 1;
442 }
443
444 if (*p == 'x')
445 g_height = strtol(p + 1, NULL, 10);
446
447 if (g_height <= 0)
448 {
449 error("invalid geometry\n");
450 return 1;
451 }
452
453 if (*p == '%')
454 g_width = -g_width;
455
456 break;
457
458 case 'f':
459 g_fullscreen = True;
460 break;
461
462 case 'b':
463 g_bitmap_cache = False;
464 break;
465
466 case 'B':
467 g_ownbackstore = False;
468 break;
469
470 case 'e':
471 g_encryption = False;
472 break;
473 case 'E':
474 packet_encryption = False;
475 break;
476 case 'm':
477 g_sendmotion = False;
478 break;
479
480 case 'C':
481 g_owncolmap = True;
482 break;
483
484 case 'D':
485 g_hide_decorations = True;
486 break;
487
488 case 'K':
489 g_grab_keyboard = False;
490 break;
491
492 case 'S':
493 if (!strcmp(optarg, "standard"))
494 {
495 g_win_button_size = 18;
496 break;
497 }
498
499 g_win_button_size = strtol(optarg, &p, 10);
500
501 if (*p)
502 {
503 error("invalid button size\n");
504 return 1;
505 }
506
507 break;
508
509 case 'T':
510 STRNCPY(g_title, optarg, sizeof(g_title));
511 break;
512
513 case 'N':
514 g_numlock_sync = True;
515 break;
516
517 case 'X':
518 g_embed_wnd = strtol(optarg, NULL, 10);
519 break;
520
521 case 'a':
522 g_server_bpp = strtol(optarg, NULL, 10);
523 if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15
524 && g_server_bpp != 24)
525 {
526 error("invalid server bpp\n");
527 return 1;
528 }
529 break;
530
531 case 'x':
532
533 if (strncmp("modem", optarg, 1) == 0)
534 {
535 g_rdp5_performanceflags =
536 RDP5_NO_WALLPAPER | RDP5_NO_FULLWINDOWDRAG |
537 RDP5_NO_MENUANIMATIONS | RDP5_NO_THEMING;
538 }
539 else if (strncmp("broadband", optarg, 1) == 0)
540 {
541 g_rdp5_performanceflags = RDP5_NO_WALLPAPER;
542 }
543 else if (strncmp("lan", optarg, 1) == 0)
544 {
545 g_rdp5_performanceflags = RDP5_DISABLE_NOTHING;
546 }
547 else
548 {
549 g_rdp5_performanceflags = strtol(optarg, NULL, 16);
550 }
551 break;
552
553 case 'P':
554 g_bitmap_cache_persist_enable = True;
555 break;
556
557 case 'r':
558
559 if (strncmp("sound", optarg, 5) == 0)
560 {
561 optarg += 5;
562
563 if (*optarg == ':')
564 {
565 *optarg++;
566 while ((p = next_arg(optarg, ',')))
567 {
568 if (strncmp("remote", optarg, 6) == 0)
569 flags |= RDP_LOGON_LEAVE_AUDIO;
570
571 if (strncmp("local", optarg, 5) == 0)
572 #ifdef WITH_RDPSND
573 g_rdpsnd = True;
574 #else
575 warning("Not compiled with sound support");
576 #endif
577
578 if (strncmp("off", optarg, 3) == 0)
579 #ifdef WITH_RDPSND
580 g_rdpsnd = False;
581 #else
582 warning("Not compiled with sound support");
583 #endif
584
585 optarg = p;
586 }
587 }
588 else
589 {
590 #ifdef WITH_RDPSND
591 g_rdpsnd = True;
592 #else
593 warning("Not compiled with sound support");
594 #endif
595 }
596 }
597 else if (strncmp("disk", optarg, 4) == 0)
598 {
599 /* -r disk:h:=/mnt/floppy */
600 disk_enum_devices(&g_num_devices, optarg + 4);
601 }
602 else if (strncmp("comport", optarg, 7) == 0)
603 {
604 serial_enum_devices(&g_num_devices, optarg + 7);
605 }
606 else if (strncmp("lptport", optarg, 7) == 0)
607 {
608 parallel_enum_devices(&g_num_devices, optarg + 7);
609 }
610 else if (strncmp("printer", optarg, 7) == 0)
611 {
612 printer_enum_devices(&g_num_devices, optarg + 7);
613 }
614 else if (strncmp("clientname", optarg, 7) == 0)
615 {
616 g_rdpdr_clientname = xmalloc(strlen(optarg + 11) + 1);
617 strcpy(g_rdpdr_clientname, optarg + 11);
618 }
619 else
620 {
621 warning("Unknown -r argument\n\n\tPossible arguments are: comport, disk, lptport, printer, sound\n");
622 }
623 break;
624
625 case '0':
626 g_console_session = True;
627 break;
628
629 case '4':
630 g_use_rdp5 = False;
631 break;
632
633 case '5':
634 g_use_rdp5 = True;
635 break;
636
637 case 'h':
638 case '?':
639 default:
640 usage(argv[0]);
641 return 1;
642 }
643 }
644
645 if (argc - optind != 1)
646 {
647 usage(argv[0]);
648 return 1;
649 }
650
651 STRNCPY(server, argv[optind], sizeof(server));
652 parse_server_and_port(server);
653
654 if (!username_option)
655 {
656 pw = getpwuid(getuid());
657 if ((pw == NULL) || (pw->pw_name == NULL))
658 {
659 error("could not determine username, use -u\n");
660 return 1;
661 }
662
663 STRNCPY(g_username, pw->pw_name, sizeof(g_username));
664 }
665
666 if (g_hostname[0] == 0)
667 {
668 if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
669 {
670 error("could not determine local hostname, use -n\n");
671 return 1;
672 }
673
674 p = strchr(fullhostname, '.');
675 if (p != NULL)
676 *p = 0;
677
678 STRNCPY(g_hostname, fullhostname, sizeof(g_hostname));
679 }
680
681 if (prompt_password && read_password(password, sizeof(password)))
682 flags |= RDP_LOGON_AUTO;
683
684 if (g_title[0] == 0)
685 {
686 strcpy(g_title, "rdesktop - ");
687 strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - "));
688 }
689
690 #ifdef RDP2VNC
691 rdp2vnc_connect(server, flags, domain, password, shell, directory);
692 return 0;
693 #else
694
695 if (!ui_init())
696 return 1;
697
698 #ifdef WITH_RDPSND
699 if (g_rdpsnd)
700 rdpsnd_init();
701 #endif
702 rdpdr_init();
703
704 if (!rdp_connect(server, flags, domain, password, shell, directory))
705 return 1;
706
707 /* By setting encryption to False here, we have an encrypted login
708 packet but unencrypted transfer of other packets */
709 if (!packet_encryption)
710 g_encryption = False;
711
712
713 DEBUG(("Connection successful.\n"));
714 memset(password, 0, sizeof(password));
715
716 if (ui_create_window())
717 {
718 rdp_main_loop(&deactivated, &ext_disc_reason);
719 ui_destroy_window();
720 }
721
722 DEBUG(("Disconnecting...\n"));
723 rdp_disconnect();
724 cache_save_state();
725 ui_deinit();
726
727 if (ext_disc_reason >= 2)
728 print_disconnect_reason(ext_disc_reason);
729
730 if (deactivated)
731 {
732 /* clean disconnect */
733 return 0;
734 }
735 else
736 {
737 if (ext_disc_reason == exDiscReasonAPIInitiatedDisconnect
738 || ext_disc_reason == exDiscReasonAPIInitiatedLogoff)
739 {
740 /* not so clean disconnect, but nothing to worry about */
741 return 0;
742 }
743 else
744 {
745 /* return error */
746 return 2;
747 }
748 }
749
750 #endif
751
752 }
753
754 #ifdef EGD_SOCKET
755 /* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
756 static BOOL
757 generate_random_egd(uint8 * buf)
758 {
759 struct sockaddr_un addr;
760 BOOL ret = False;
761 int fd;
762
763 fd = socket(AF_UNIX, SOCK_STREAM, 0);
764 if (fd == -1)
765 return False;
766
767 addr.sun_family = AF_UNIX;
768 memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
769 if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
770 goto err;
771
772 /* PRNGD and EGD use a simple communications protocol */
773 buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
774 buf[1] = 32; /* Number of requested random bytes */
775 if (write(fd, buf, 2) != 2)
776 goto err;
777
778 if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */
779 goto err;
780
781 if (read(fd, buf, 32) != 32)
782 goto err;
783
784 ret = True;
785
786 err:
787 close(fd);
788 return ret;
789 }
790 #endif
791
792 /* Generate a 32-byte random for the secure transport code. */
793 void
794 generate_random(uint8 * random)
795 {
796 struct stat st;
797 struct tms tmsbuf;
798 MD5_CTX md5;
799 uint32 *r;
800 int fd, n;
801
802 /* If we have a kernel random device, try that first */
803 if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
804 || ((fd = open("/dev/random", O_RDONLY)) != -1))
805 {
806 n = read(fd, random, 32);
807 close(fd);
808 if (n == 32)
809 return;
810 }
811
812 #ifdef EGD_SOCKET
813 /* As a second preference use an EGD */
814 if (generate_random_egd(random))
815 return;
816 #endif
817
818 /* Otherwise use whatever entropy we can gather - ideas welcome. */
819 r = (uint32 *) random;
820 r[0] = (getpid()) | (getppid() << 16);
821 r[1] = (getuid()) | (getgid() << 16);
822 r[2] = times(&tmsbuf); /* system uptime (clocks) */
823 gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */
824 stat("/tmp", &st);
825 r[5] = st.st_atime;
826 r[6] = st.st_mtime;
827 r[7] = st.st_ctime;
828
829 /* Hash both halves with MD5 to obscure possible patterns */
830 MD5_Init(&md5);
831 MD5_Update(&md5, random, 16);
832 MD5_Final(random, &md5);
833 MD5_Update(&md5, random + 16, 16);
834 MD5_Final(random + 16, &md5);
835 }
836
837 /* malloc; exit if out of memory */
838 void *
839 xmalloc(int size)
840 {
841 void *mem = malloc(size);
842 if (mem == NULL)
843 {
844 error("xmalloc %d\n", size);
845 exit(1);
846 }
847 return mem;
848 }
849
850 /* realloc; exit if out of memory */
851 void *
852 xrealloc(void *oldmem, int size)
853 {
854 void *mem = realloc(oldmem, size);
855 if (mem == NULL)
856 {
857 error("xrealloc %d\n", size);
858 exit(1);
859 }
860 return mem;
861 }
862
863 /* free */
864 void
865 xfree(void *mem)
866 {
867 free(mem);
868 }
869
870 /* report an error */
871 void
872 error(char *format, ...)
873 {
874 va_list ap;
875
876 fprintf(stderr, "ERROR: ");
877
878 va_start(ap, format);
879 vfprintf(stderr, format, ap);
880 va_end(ap);
881 }
882
883 /* report a warning */
884 void
885 warning(char *format, ...)
886 {
887 va_list ap;
888
889 fprintf(stderr, "WARNING: ");
890
891 va_start(ap, format);
892 vfprintf(stderr, format, ap);
893 va_end(ap);
894 }
895
896 /* report an unimplemented protocol feature */
897 void
898 unimpl(char *format, ...)
899 {
900 va_list ap;
901
902 fprintf(stderr, "NOT IMPLEMENTED: ");
903
904 va_start(ap, format);
905 vfprintf(stderr, format, ap);
906 va_end(ap);
907 }
908
909 /* produce a hex dump */
910 void
911 hexdump(unsigned char *p, unsigned int len)
912 {
913 unsigned char *line = p;
914 int i, thisline, offset = 0;
915
916 while (offset < len)
917 {
918 printf("%04x ", offset);
919 thisline = len - offset;
920 if (thisline > 16)
921 thisline = 16;
922
923 for (i = 0; i < thisline; i++)
924 printf("%02x ", line[i]);
925
926 for (; i < 16; i++)
927 printf(" ");
928
929 for (i = 0; i < thisline; i++)
930 printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
931
932 printf("\n");
933 offset += thisline;
934 line += thisline;
935 }
936 }
937
938 /*
939 input: src is the string we look in for needle.
940 Needle may be escaped by a backslash, in
941 that case we ignore that particular needle.
942 return value: returns next src pointer, for
943 succesive executions, like in a while loop
944 if retval is 0, then there are no more args.
945 pitfalls:
946 src is modified. 0x00 chars are inserted to
947 terminate strings.
948 return val, points on the next val chr after ins
949 0x00
950
951 example usage:
952 while( (pos = next_arg( optarg, ',')) ){
953 printf("%s\n",optarg);
954 optarg=pos;
955 }
956
957 */
958 char *
959 next_arg(char *src, char needle)
960 {
961 char *nextval;
962 char *p;
963 char *mvp = 0;
964
965 /* EOS */
966 if (*src == (char) 0x00)
967 return 0;
968
969 p = src;
970 /* skip escaped needles */
971 while ((nextval = strchr(p, needle)))
972 {
973 mvp = nextval - 1;
974 /* found backslashed needle */
975 if (*mvp == '\\' && (mvp > src))
976 {
977 /* move string one to the left */
978 while (*(mvp + 1) != (char) 0x00)
979 {
980 *mvp = *(mvp + 1);
981 *mvp++;
982 }
983 *mvp = (char) 0x00;
984 p = nextval;
985 }
986 else
987 {
988 p = nextval + 1;
989 break;
990 }
991
992 }
993
994 /* more args available */
995 if (nextval)
996 {
997 *nextval = (char) 0x00;
998 return ++nextval;
999 }
1000
1001 /* no more args after this, jump to EOS */
1002 nextval = src + strlen(src);
1003 return nextval;
1004 }
1005
1006
1007 void
1008 toupper_str(char *p)
1009 {
1010 while (*p)
1011 {
1012 if ((*p >= 'a') && (*p <= 'z'))
1013 *p = toupper((int) *p);
1014 p++;
1015 }
1016 }
1017
1018
1019 /* not all clibs got ltoa */
1020 #define LTOA_BUFSIZE (sizeof(long) * 8 + 1)
1021
1022 char *
1023 l_to_a(long N, int base)
1024 {
1025 static char ret[LTOA_BUFSIZE];
1026
1027 char *head = ret, buf[LTOA_BUFSIZE], *tail = buf + sizeof(buf);
1028
1029 register int divrem;
1030
1031 if (base < 36 || 2 > base)
1032 base = 10;
1033
1034 if (N < 0)
1035 {
1036 *head++ = '-';
1037 N = -N;
1038 }
1039
1040 tail = buf + sizeof(buf);
1041 *--tail = 0;
1042
1043 do
1044 {
1045 divrem = N % base;
1046 *--tail = (divrem <= 9) ? divrem + '0' : divrem + 'a' - 10;
1047 N /= base;
1048 }
1049 while (N);
1050
1051 strcpy(head, tail);
1052 return ret;
1053 }
1054
1055
1056 int
1057 load_licence(unsigned char **data)
1058 {
1059 char *home, *path;
1060 struct stat st;
1061 int fd, length;
1062
1063 home = getenv("HOME");
1064 if (home == NULL)
1065 return -1;
1066
1067 path = (char *) xmalloc(strlen(home) + strlen(g_hostname) + sizeof("/.rdesktop/licence."));
1068 sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
1069
1070 fd = open(path, O_RDONLY);
1071 if (fd == -1)
1072 return -1;
1073
1074 if (fstat(fd, &st))
1075 return -1;
1076
1077 *data = (uint8 *) xmalloc(st.st_size);
1078 length = read(fd, *data, st.st_size);
1079 close(fd);
1080 xfree(path);
1081 return length;
1082 }
1083
1084 void
1085 save_licence(unsigned char *data, int length)
1086 {
1087 char *home, *path, *tmppath;
1088 int fd;
1089
1090 home = getenv("HOME");
1091 if (home == NULL)
1092 return;
1093
1094 path = (char *) xmalloc(strlen(home) + strlen(g_hostname) + sizeof("/.rdesktop/licence."));
1095
1096 sprintf(path, "%s/.rdesktop", home);
1097 if ((mkdir(path, 0700) == -1) && errno != EEXIST)
1098 {
1099 perror(path);
1100 return;
1101 }
1102
1103 /* write licence to licence.hostname.new, then atomically rename to licence.hostname */
1104
1105 sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
1106 tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
1107 strcpy(tmppath, path);
1108 strcat(tmppath, ".new");
1109
1110 fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
1111 if (fd == -1)
1112 {
1113 perror(tmppath);
1114 return;
1115 }
1116
1117 if (write(fd, data, length) != length)
1118 {
1119 perror(tmppath);
1120 unlink(tmppath);
1121 }
1122 else if (rename(tmppath, path) == -1)
1123 {
1124 perror(path);
1125 unlink(tmppath);
1126 }
1127
1128 close(fd);
1129 xfree(tmppath);
1130 xfree(path);
1131 }
1132
1133 /* Create the bitmap cache directory */
1134 BOOL
1135 rd_pstcache_mkdir(void)
1136 {
1137 char *home;
1138 char bmpcache_dir[256];
1139
1140 home = getenv("HOME");
1141
1142 if (home == NULL)
1143 return False;
1144
1145 sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop");
1146
1147 if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
1148 {
1149 perror(bmpcache_dir);
1150 return False;
1151 }
1152
1153 sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop/cache");
1154
1155 if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
1156 {
1157 perror(bmpcache_dir);
1158 return False;
1159 }
1160
1161 return True;
1162 }
1163
1164 /* open a file in the .rdesktop directory */
1165 int
1166 rd_open_file(char *filename)
1167 {
1168 char *home;
1169 char fn[256];
1170 int fd;
1171
1172 home = getenv("HOME");
1173 if (home == NULL)
1174 return -1;
1175 sprintf(fn, "%s/.rdesktop/%s", home, filename);
1176 fd = open(fn, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
1177 if (fd == -1)
1178 perror(fn);
1179 return fd;
1180 }
1181
1182 /* close file */
1183 void
1184 rd_close_file(int fd)
1185 {
1186 close(fd);
1187 }
1188
1189 /* read from file*/
1190 int
1191 rd_read_file(int fd, void *ptr, int len)
1192 {
1193 return read(fd, ptr, len);
1194 }
1195
1196 /* write to file */
1197 int
1198 rd_write_file(int fd, void *ptr, int len)
1199 {
1200 return write(fd, ptr, len);
1201 }
1202
1203 /* move file pointer */
1204 int
1205 rd_lseek_file(int fd, int offset)
1206 {
1207 return lseek(fd, offset, SEEK_SET);
1208 }
1209
1210 /* do a write lock on a file */
1211 BOOL
1212 rd_lock_file(int fd, int start, int len)
1213 {
1214 struct flock lock;
1215
1216 lock.l_type = F_WRLCK;
1217 lock.l_whence = SEEK_SET;
1218 lock.l_start = start;
1219 lock.l_len = len;
1220 if (fcntl(fd, F_SETLK, &lock) == -1)
1221 return False;
1222 return True;
1223 }

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