/[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 861 - (show annotations)
Sun Mar 13 17:40:51 2005 UTC (19 years, 2 months ago) by stargo
Original Path: sourceforge.net/trunk/rdesktop/rdesktop.c
File MIME type: text/plain
File size: 26984 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 1999-2005
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 HAVE_ICONV
34 #ifdef HAVE_LOCALE_H
35 #include <locale.h>
36 #endif
37 #ifdef HAVE_LANGINFO_H
38 #include <langinfo.h>
39 #endif
40 #endif
41
42 #ifdef EGD_SOCKET
43 #include <sys/socket.h> /* socket connect */
44 #include <sys/un.h> /* sockaddr_un */
45 #endif
46
47 #include <openssl/md5.h>
48
49 char g_title[64] = "";
50 char g_username[64];
51 char g_hostname[16];
52 char keymapname[16];
53 int g_keylayout = 0x409; /* Defaults to US keyboard layout */
54
55 int g_width = 800; /* width is special: If 0, the
56 geometry will be fetched from
57 _NET_WORKAREA. If negative,
58 absolute value specifies the
59 percent of the whole screen. */
60 int g_height = 600;
61 int g_xpos = 0;
62 int g_ypos = 0;
63 extern int g_tcp_port_rdp;
64 int g_server_bpp = 8;
65 int g_win_button_size = 0; /* If zero, disable single app mode */
66 BOOL g_bitmap_compression = True;
67 BOOL g_sendmotion = True;
68 BOOL g_bitmap_cache = True;
69 BOOL g_bitmap_cache_persist_enable = False;
70 BOOL g_bitmap_cache_precache = True;
71 BOOL g_encryption = True;
72 BOOL packet_encryption = True;
73 BOOL g_desktop_save = True; /* desktop save order */
74 BOOL g_polygon_ellipse_orders = True; /* polygon / ellipse orders */
75 BOOL g_fullscreen = False;
76 BOOL g_grab_keyboard = True;
77 BOOL g_hide_decorations = False;
78 BOOL g_use_rdp5 = True;
79 BOOL g_console_session = False;
80 BOOL g_numlock_sync = False;
81 BOOL g_owncolmap = False;
82 BOOL g_ownbackstore = True; /* We can't rely on external BackingStore */
83 uint32 g_embed_wnd;
84 uint32 g_rdp5_performanceflags =
85 RDP5_NO_WALLPAPER | RDP5_NO_FULLWINDOWDRAG | RDP5_NO_MENUANIMATIONS;
86
87 #ifdef WITH_RDPSND
88 BOOL g_rdpsnd = False;
89 #endif
90
91 #ifdef HAVE_ICONV
92 char g_codepage[16] = "";
93 #endif
94
95 extern RDPDR_DEVICE g_rdpdr_device[];
96 extern uint32 g_num_devices;
97 extern char *g_rdpdr_clientname;
98
99 #ifdef RDP2VNC
100 extern int rfb_port;
101 extern int defer_time;
102 void
103 rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password,
104 char *shell, char *directory);
105 #endif
106 /* Display usage information */
107 static void
108 usage(char *program)
109 {
110 fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
111 fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2005 Matt Chapman.\n");
112 fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
113
114 fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
115 #ifdef RDP2VNC
116 fprintf(stderr, " -V: vnc port\n");
117 fprintf(stderr, " -Q: defer time (ms)\n");
118 #endif
119 fprintf(stderr, " -u: user name\n");
120 fprintf(stderr, " -d: domain\n");
121 fprintf(stderr, " -s: shell\n");
122 fprintf(stderr, " -c: working directory\n");
123 fprintf(stderr, " -p: password (- to prompt)\n");
124 fprintf(stderr, " -n: client hostname\n");
125 fprintf(stderr, " -k: keyboard layout on server (en-us, de, sv, etc.)\n");
126 fprintf(stderr, " -g: desktop geometry (WxH)\n");
127 fprintf(stderr, " -f: full-screen mode\n");
128 fprintf(stderr, " -b: force bitmap updates\n");
129 #ifdef HAVE_ICONV
130 fprintf(stderr, " -L: local codepage\n");
131 #endif
132 fprintf(stderr, " -B: use BackingStore of X-server (if available)\n");
133 fprintf(stderr, " -e: disable encryption (French TS)\n");
134 fprintf(stderr, " -E: disable encryption from client to server\n");
135 fprintf(stderr, " -m: do not send motion events\n");
136 fprintf(stderr, " -C: use private colour map\n");
137 fprintf(stderr, " -D: hide window manager decorations\n");
138 fprintf(stderr, " -K: keep window manager key bindings\n");
139 fprintf(stderr, " -S: caption button size (single application mode)\n");
140 fprintf(stderr, " -T: window title\n");
141 fprintf(stderr, " -N: enable numlock syncronization\n");
142 fprintf(stderr, " -X: embed into another window with a given id.\n");
143 fprintf(stderr, " -a: connection colour depth\n");
144 fprintf(stderr, " -z: enable rdp compression\n");
145 fprintf(stderr, " -x: RDP5 experience (m[odem 28.8], b[roadband], l[an] or hex nr.)\n");
146 fprintf(stderr, " -P: use persistent bitmap caching\n");
147 fprintf(stderr, " -r: enable specified device redirection (this flag can be repeated)\n");
148 fprintf(stderr,
149 " '-r comport:COM1=/dev/ttyS0': enable serial redirection of /dev/ttyS0 to COM1\n");
150 fprintf(stderr, " or COM1=/dev/ttyS0,COM2=/dev/ttyS1\n");
151 fprintf(stderr,
152 " '-r disk:floppy=/mnt/floppy': enable redirection of /mnt/floppy to 'floppy' share\n");
153 fprintf(stderr, " or 'floppy=/mnt/floppy,cdrom=/mnt/cdrom'\n");
154 fprintf(stderr, " '-r clientname=<client name>': Set the client name displayed\n");
155 fprintf(stderr, " for redirected disks\n");
156 fprintf(stderr,
157 " '-r lptport:LPT1=/dev/lp0': enable parallel redirection of /dev/lp0 to LPT1\n");
158 fprintf(stderr, " or LPT1=/dev/lp0,LPT2=/dev/lp1\n");
159 fprintf(stderr, " '-r printer:mydeskjet': enable printer redirection\n");
160 fprintf(stderr,
161 " or mydeskjet=\"HP LaserJet IIIP\" to enter server driver as well\n");
162 fprintf(stderr, " '-r sound:[local|off|remote]': enable sound redirection\n");
163 fprintf(stderr, " remote would leave sound on server\n");
164 fprintf(stderr, " -0: attach to console\n");
165 fprintf(stderr, " -4: use RDP version 4\n");
166 fprintf(stderr, " -5: use RDP version 5 (default)\n");
167 }
168
169 void
170 print_disconnect_reason(uint16 reason)
171 {
172 char *text;
173
174 switch (reason)
175 {
176 case exDiscReasonNoInfo:
177 text = "No information available";
178 break;
179
180 case exDiscReasonAPIInitiatedDisconnect:
181 text = "Server initiated disconnect";
182 break;
183
184 case exDiscReasonAPIInitiatedLogoff:
185 text = "Server initiated logoff";
186 break;
187
188 case exDiscReasonServerIdleTimeout:
189 text = "Server idle timeout reached";
190 break;
191
192 case exDiscReasonServerLogonTimeout:
193 text = "Server logon timeout reached";
194 break;
195
196 case exDiscReasonReplacedByOtherConnection:
197 text = "The session was replaced";
198 break;
199
200 case exDiscReasonOutOfMemory:
201 text = "The server is out of memory";
202 break;
203
204 case exDiscReasonServerDeniedConnection:
205 text = "The server denied the connection";
206 break;
207
208 case exDiscReasonServerDeniedConnectionFips:
209 text = "The server denied the connection for security reason";
210 break;
211
212 case exDiscReasonLicenseInternal:
213 text = "Internal licensing error";
214 break;
215
216 case exDiscReasonLicenseNoLicenseServer:
217 text = "No license server available";
218 break;
219
220 case exDiscReasonLicenseNoLicense:
221 text = "No valid license available";
222 break;
223
224 case exDiscReasonLicenseErrClientMsg:
225 text = "Invalid licensing message";
226 break;
227
228 case exDiscReasonLicenseHwidDoesntMatchLicense:
229 text = "Hardware id doesn't match software license";
230 break;
231
232 case exDiscReasonLicenseErrClientLicense:
233 text = "Client license error";
234 break;
235
236 case exDiscReasonLicenseCantFinishProtocol:
237 text = "Network error during licensing protocol";
238 break;
239
240 case exDiscReasonLicenseClientEndedProtocol:
241 text = "Licensing protocol was not completed";
242 break;
243
244 case exDiscReasonLicenseErrClientEncryption:
245 text = "Incorrect client license enryption";
246 break;
247
248 case exDiscReasonLicenseCantUpgradeLicense:
249 text = "Can't upgrade license";
250 break;
251
252 case exDiscReasonLicenseNoRemoteConnections:
253 text = "The server is not licensed to accept remote connections";
254 break;
255
256 default:
257 if (reason > 0x1000 && reason < 0x7fff)
258 {
259 text = "Internal protocol error";
260 }
261 else
262 {
263 text = "Unknown reason";
264 }
265 }
266 fprintf(stderr, "disconnect: %s.\n", text);
267 }
268
269 static BOOL
270 read_password(char *password, int size)
271 {
272 struct termios tios;
273 BOOL ret = False;
274 int istty = 0;
275 char *p;
276
277 if (tcgetattr(STDIN_FILENO, &tios) == 0)
278 {
279 fprintf(stderr, "Password: ");
280 tios.c_lflag &= ~ECHO;
281 tcsetattr(STDIN_FILENO, TCSANOW, &tios);
282 istty = 1;
283 }
284
285 if (fgets(password, size, stdin) != NULL)
286 {
287 ret = True;
288
289 /* strip final newline */
290 p = strchr(password, '\n');
291 if (p != NULL)
292 *p = 0;
293 }
294
295 if (istty)
296 {
297 tios.c_lflag |= ECHO;
298 tcsetattr(STDIN_FILENO, TCSANOW, &tios);
299 fprintf(stderr, "\n");
300 }
301
302 return ret;
303 }
304
305 static void
306 parse_server_and_port(char *server)
307 {
308 char *p;
309 #ifdef IPv6
310 int addr_colons;
311 #endif
312
313 #ifdef IPv6
314 p = server;
315 addr_colons = 0;
316 while (*p)
317 if (*p++ == ':')
318 addr_colons++;
319 if (addr_colons >= 2)
320 {
321 /* numeric IPv6 style address format - [1:2:3::4]:port */
322 p = strchr(server, ']');
323 if (*server == '[' && p != NULL)
324 {
325 if (*(p + 1) == ':' && *(p + 2) != '\0')
326 g_tcp_port_rdp = strtol(p + 2, NULL, 10);
327 /* remove the port number and brackets from the address */
328 *p = '\0';
329 strncpy(server, server + 1, strlen(server));
330 }
331 }
332 else
333 {
334 /* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */
335 p = strchr(server, ':');
336 if (p != NULL)
337 {
338 g_tcp_port_rdp = strtol(p + 1, NULL, 10);
339 *p = 0;
340 }
341 }
342 #else /* no IPv6 support */
343 p = strchr(server, ':');
344 if (p != NULL)
345 {
346 g_tcp_port_rdp = strtol(p + 1, NULL, 10);
347 *p = 0;
348 }
349 #endif /* IPv6 */
350
351 }
352
353 /* Client program */
354 int
355 main(int argc, char *argv[])
356 {
357 char server[64];
358 char fullhostname[64];
359 char domain[16];
360 char password[64];
361 char shell[128];
362 char directory[32];
363 BOOL prompt_password, deactivated;
364 struct passwd *pw;
365 uint32 flags, ext_disc_reason = 0;
366 char *p;
367 int c;
368
369 int username_option = 0;
370
371 flags = RDP_LOGON_NORMAL;
372 prompt_password = False;
373 domain[0] = password[0] = shell[0] = directory[0] = 0;
374 strcpy(keymapname, "en-us");
375 g_embed_wnd = 0;
376
377 g_num_devices = 0;
378
379 #ifdef RDP2VNC
380 #define VNCOPT "V:Q:"
381 #else
382 #define VNCOPT
383 #endif
384
385 while ((c = getopt(argc, argv,
386 VNCOPT "u:L:d:s:c:p:n:k:g:fbBeEmzCDKS:T:NX:a:x:Pr:045h?")) != -1)
387 {
388 switch (c)
389 {
390 #ifdef RDP2VNC
391 case 'V':
392 rfb_port = strtol(optarg, NULL, 10);
393 if (rfb_port < 100)
394 rfb_port += 5900;
395 break;
396
397 case 'Q':
398 defer_time = strtol(optarg, NULL, 10);
399 if (defer_time < 0)
400 defer_time = 0;
401 break;
402 #endif
403
404 case 'u':
405 STRNCPY(g_username, optarg, sizeof(g_username));
406 username_option = 1;
407 break;
408
409 case 'L':
410 #ifdef HAVE_ICONV
411 STRNCPY(g_codepage, optarg, sizeof(g_codepage));
412 #else
413 error("iconv support not available\n");
414 #endif
415 break;
416
417 case 'd':
418 STRNCPY(domain, optarg, sizeof(domain));
419 break;
420
421 case 's':
422 STRNCPY(shell, optarg, sizeof(shell));
423 break;
424
425 case 'c':
426 STRNCPY(directory, optarg, sizeof(directory));
427 break;
428
429 case 'p':
430 if ((optarg[0] == '-') && (optarg[1] == 0))
431 {
432 prompt_password = True;
433 break;
434 }
435
436 STRNCPY(password, optarg, sizeof(password));
437 flags |= RDP_LOGON_AUTO;
438
439 /* try to overwrite argument so it won't appear in ps */
440 p = optarg;
441 while (*p)
442 *(p++) = 'X';
443 break;
444
445 case 'n':
446 STRNCPY(g_hostname, optarg, sizeof(g_hostname));
447 break;
448
449 case 'k':
450 STRNCPY(keymapname, optarg, sizeof(keymapname));
451 break;
452
453 case 'g':
454 g_fullscreen = False;
455 if (!strcmp(optarg, "workarea"))
456 {
457 g_width = g_height = 0;
458 break;
459 }
460
461 g_width = strtol(optarg, &p, 10);
462 if (g_width <= 0)
463 {
464 error("invalid geometry\n");
465 return 1;
466 }
467
468 if (*p == 'x')
469 g_height = strtol(p + 1, &p, 10);
470
471 if (g_height <= 0)
472 {
473 error("invalid geometry\n");
474 return 1;
475 }
476
477 if (*p == '%')
478 {
479 g_width = -g_width;
480 p++;
481 }
482
483 if (*p == '+' || *p == '-')
484 g_xpos = strtol(p, &p, 10);
485
486 if (*p == '+' || *p == '-')
487 g_ypos = strtol(p, NULL, 10);
488
489 break;
490
491 case 'f':
492 g_fullscreen = True;
493 break;
494
495 case 'b':
496 g_bitmap_cache = False;
497 break;
498
499 case 'B':
500 g_ownbackstore = False;
501 break;
502
503 case 'e':
504 g_encryption = False;
505 break;
506 case 'E':
507 packet_encryption = False;
508 break;
509 case 'm':
510 g_sendmotion = False;
511 break;
512
513 case 'C':
514 g_owncolmap = True;
515 break;
516
517 case 'D':
518 g_hide_decorations = True;
519 break;
520
521 case 'K':
522 g_grab_keyboard = False;
523 break;
524
525 case 'S':
526 if (!strcmp(optarg, "standard"))
527 {
528 g_win_button_size = 18;
529 break;
530 }
531
532 g_win_button_size = strtol(optarg, &p, 10);
533
534 if (*p)
535 {
536 error("invalid button size\n");
537 return 1;
538 }
539
540 break;
541
542 case 'T':
543 STRNCPY(g_title, optarg, sizeof(g_title));
544 break;
545
546 case 'N':
547 g_numlock_sync = True;
548 break;
549
550 case 'X':
551 g_embed_wnd = strtol(optarg, NULL, 10);
552 break;
553
554 case 'a':
555 g_server_bpp = strtol(optarg, NULL, 10);
556 if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15
557 && g_server_bpp != 24)
558 {
559 error("invalid server bpp\n");
560 return 1;
561 }
562 break;
563
564 case 'z':
565 DEBUG(("rdp compression enabled\n"));
566 flags |= RDP_COMPRESSION;
567 break;
568
569 case 'x':
570 if (strncmp("modem", optarg, 1) == 0)
571 {
572 g_rdp5_performanceflags =
573 RDP5_NO_WALLPAPER | RDP5_NO_FULLWINDOWDRAG |
574 RDP5_NO_MENUANIMATIONS | RDP5_NO_THEMING;
575 }
576 else if (strncmp("broadband", optarg, 1) == 0)
577 {
578 g_rdp5_performanceflags = RDP5_NO_WALLPAPER;
579 }
580 else if (strncmp("lan", optarg, 1) == 0)
581 {
582 g_rdp5_performanceflags = RDP5_DISABLE_NOTHING;
583 }
584 else
585 {
586 g_rdp5_performanceflags = strtol(optarg, NULL, 16);
587 }
588 break;
589
590 case 'P':
591 g_bitmap_cache_persist_enable = True;
592 break;
593
594 case 'r':
595
596 if (strncmp("sound", optarg, 5) == 0)
597 {
598 optarg += 5;
599
600 if (*optarg == ':')
601 {
602 *optarg++;
603 while ((p = next_arg(optarg, ',')))
604 {
605 if (strncmp("remote", optarg, 6) == 0)
606 flags |= RDP_LOGON_LEAVE_AUDIO;
607
608 if (strncmp("local", optarg, 5) == 0)
609 #ifdef WITH_RDPSND
610 g_rdpsnd = True;
611 #else
612 warning("Not compiled with sound support\n");
613 #endif
614
615 if (strncmp("off", optarg, 3) == 0)
616 #ifdef WITH_RDPSND
617 g_rdpsnd = False;
618 #else
619 warning("Not compiled with sound support\n");
620 #endif
621
622 optarg = p;
623 }
624 }
625 else
626 {
627 #ifdef WITH_RDPSND
628 g_rdpsnd = True;
629 #else
630 warning("Not compiled with sound support\n");
631 #endif
632 }
633 }
634 else if (strncmp("disk", optarg, 4) == 0)
635 {
636 /* -r disk:h:=/mnt/floppy */
637 disk_enum_devices(&g_num_devices, optarg + 4);
638 }
639 else if (strncmp("comport", optarg, 7) == 0)
640 {
641 serial_enum_devices(&g_num_devices, optarg + 7);
642 }
643 else if (strncmp("lptport", optarg, 7) == 0)
644 {
645 parallel_enum_devices(&g_num_devices, optarg + 7);
646 }
647 else if (strncmp("printer", optarg, 7) == 0)
648 {
649 printer_enum_devices(&g_num_devices, optarg + 7);
650 }
651 else if (strncmp("clientname", optarg, 7) == 0)
652 {
653 g_rdpdr_clientname = xmalloc(strlen(optarg + 11) + 1);
654 strcpy(g_rdpdr_clientname, optarg + 11);
655 }
656 else
657 {
658 warning("Unknown -r argument\n\n\tPossible arguments are: comport, disk, lptport, printer, sound\n");
659 }
660 break;
661
662 case '0':
663 g_console_session = True;
664 break;
665
666 case '4':
667 g_use_rdp5 = False;
668 break;
669
670 case '5':
671 g_use_rdp5 = True;
672 break;
673
674 case 'h':
675 case '?':
676 default:
677 usage(argv[0]);
678 return 1;
679 }
680 }
681
682 if (argc - optind != 1)
683 {
684 usage(argv[0]);
685 return 1;
686 }
687
688 STRNCPY(server, argv[optind], sizeof(server));
689 parse_server_and_port(server);
690
691 if (!username_option)
692 {
693 pw = getpwuid(getuid());
694 if ((pw == NULL) || (pw->pw_name == NULL))
695 {
696 error("could not determine username, use -u\n");
697 return 1;
698 }
699
700 STRNCPY(g_username, pw->pw_name, sizeof(g_username));
701 }
702
703 #ifdef HAVE_ICONV
704 if (g_codepage[0] == 0)
705 {
706 if (setlocale(LC_CTYPE, ""))
707 {
708 STRNCPY(g_codepage, nl_langinfo(CODESET), sizeof(g_codepage));
709 }
710 else
711 {
712 STRNCPY(g_codepage, DEFAULT_CODEPAGE, sizeof(g_codepage));
713 }
714 }
715 #endif
716
717 if (g_hostname[0] == 0)
718 {
719 if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
720 {
721 error("could not determine local hostname, use -n\n");
722 return 1;
723 }
724
725 p = strchr(fullhostname, '.');
726 if (p != NULL)
727 *p = 0;
728
729 STRNCPY(g_hostname, fullhostname, sizeof(g_hostname));
730 }
731
732 if ((flags & RDP_COMPRESSION) && (g_server_bpp > 8))
733 {
734 warning("rdp compression not supported for bpp > 8, compression disabled\n");
735 flags ^= RDP_COMPRESSION;
736 }
737
738 if (prompt_password && read_password(password, sizeof(password)))
739 flags |= RDP_LOGON_AUTO;
740
741 if (g_title[0] == 0)
742 {
743 strcpy(g_title, "rdesktop - ");
744 strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - "));
745 }
746
747 #ifdef RDP2VNC
748 rdp2vnc_connect(server, flags, domain, password, shell, directory);
749 return 0;
750 #else
751
752 if (!ui_init())
753 return 1;
754
755 #ifdef WITH_RDPSND
756 if (g_rdpsnd)
757 rdpsnd_init();
758 #endif
759 rdpdr_init();
760
761 if (!rdp_connect(server, flags, domain, password, shell, directory))
762 return 1;
763
764 /* By setting encryption to False here, we have an encrypted login
765 packet but unencrypted transfer of other packets */
766 if (!packet_encryption)
767 g_encryption = False;
768
769
770 DEBUG(("Connection successful.\n"));
771 memset(password, 0, sizeof(password));
772
773 if (ui_create_window())
774 {
775 rdp_main_loop(&deactivated, &ext_disc_reason);
776 ui_destroy_window();
777 }
778
779 DEBUG(("Disconnecting...\n"));
780 rdp_disconnect();
781 cache_save_state();
782 ui_deinit();
783
784 if (ext_disc_reason >= 2)
785 print_disconnect_reason(ext_disc_reason);
786
787 if (deactivated)
788 {
789 /* clean disconnect */
790 return 0;
791 }
792 else
793 {
794 if (ext_disc_reason == exDiscReasonAPIInitiatedDisconnect
795 || ext_disc_reason == exDiscReasonAPIInitiatedLogoff)
796 {
797 /* not so clean disconnect, but nothing to worry about */
798 return 0;
799 }
800 else
801 {
802 /* return error */
803 return 2;
804 }
805 }
806
807 #endif
808
809 }
810
811 #ifdef EGD_SOCKET
812 /* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
813 static BOOL
814 generate_random_egd(uint8 * buf)
815 {
816 struct sockaddr_un addr;
817 BOOL ret = False;
818 int fd;
819
820 fd = socket(AF_UNIX, SOCK_STREAM, 0);
821 if (fd == -1)
822 return False;
823
824 addr.sun_family = AF_UNIX;
825 memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
826 if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
827 goto err;
828
829 /* PRNGD and EGD use a simple communications protocol */
830 buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
831 buf[1] = 32; /* Number of requested random bytes */
832 if (write(fd, buf, 2) != 2)
833 goto err;
834
835 if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */
836 goto err;
837
838 if (read(fd, buf, 32) != 32)
839 goto err;
840
841 ret = True;
842
843 err:
844 close(fd);
845 return ret;
846 }
847 #endif
848
849 /* Generate a 32-byte random for the secure transport code. */
850 void
851 generate_random(uint8 * random)
852 {
853 struct stat st;
854 struct tms tmsbuf;
855 MD5_CTX md5;
856 uint32 *r;
857 int fd, n;
858
859 /* If we have a kernel random device, try that first */
860 if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
861 || ((fd = open("/dev/random", O_RDONLY)) != -1))
862 {
863 n = read(fd, random, 32);
864 close(fd);
865 if (n == 32)
866 return;
867 }
868
869 #ifdef EGD_SOCKET
870 /* As a second preference use an EGD */
871 if (generate_random_egd(random))
872 return;
873 #endif
874
875 /* Otherwise use whatever entropy we can gather - ideas welcome. */
876 r = (uint32 *) random;
877 r[0] = (getpid()) | (getppid() << 16);
878 r[1] = (getuid()) | (getgid() << 16);
879 r[2] = times(&tmsbuf); /* system uptime (clocks) */
880 gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */
881 stat("/tmp", &st);
882 r[5] = st.st_atime;
883 r[6] = st.st_mtime;
884 r[7] = st.st_ctime;
885
886 /* Hash both halves with MD5 to obscure possible patterns */
887 MD5_Init(&md5);
888 MD5_Update(&md5, random, 16);
889 MD5_Final(random, &md5);
890 MD5_Update(&md5, random + 16, 16);
891 MD5_Final(random + 16, &md5);
892 }
893
894 /* malloc; exit if out of memory */
895 void *
896 xmalloc(int size)
897 {
898 void *mem = malloc(size);
899 if (mem == NULL)
900 {
901 error("xmalloc %d\n", size);
902 exit(1);
903 }
904 return mem;
905 }
906
907 /* realloc; exit if out of memory */
908 void *
909 xrealloc(void *oldmem, int size)
910 {
911 void *mem;
912
913 if (size < 1)
914 size = 1;
915 mem = realloc(oldmem, size);
916 if (mem == NULL)
917 {
918 error("xrealloc %d\n", size);
919 exit(1);
920 }
921 return mem;
922 }
923
924 /* free */
925 void
926 xfree(void *mem)
927 {
928 free(mem);
929 }
930
931 /* report an error */
932 void
933 error(char *format, ...)
934 {
935 va_list ap;
936
937 fprintf(stderr, "ERROR: ");
938
939 va_start(ap, format);
940 vfprintf(stderr, format, ap);
941 va_end(ap);
942 }
943
944 /* report a warning */
945 void
946 warning(char *format, ...)
947 {
948 va_list ap;
949
950 fprintf(stderr, "WARNING: ");
951
952 va_start(ap, format);
953 vfprintf(stderr, format, ap);
954 va_end(ap);
955 }
956
957 /* report an unimplemented protocol feature */
958 void
959 unimpl(char *format, ...)
960 {
961 va_list ap;
962
963 fprintf(stderr, "NOT IMPLEMENTED: ");
964
965 va_start(ap, format);
966 vfprintf(stderr, format, ap);
967 va_end(ap);
968 }
969
970 /* produce a hex dump */
971 void
972 hexdump(unsigned char *p, unsigned int len)
973 {
974 unsigned char *line = p;
975 int i, thisline, offset = 0;
976
977 while (offset < len)
978 {
979 printf("%04x ", offset);
980 thisline = len - offset;
981 if (thisline > 16)
982 thisline = 16;
983
984 for (i = 0; i < thisline; i++)
985 printf("%02x ", line[i]);
986
987 for (; i < 16; i++)
988 printf(" ");
989
990 for (i = 0; i < thisline; i++)
991 printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
992
993 printf("\n");
994 offset += thisline;
995 line += thisline;
996 }
997 }
998
999 /*
1000 input: src is the string we look in for needle.
1001 Needle may be escaped by a backslash, in
1002 that case we ignore that particular needle.
1003 return value: returns next src pointer, for
1004 succesive executions, like in a while loop
1005 if retval is 0, then there are no more args.
1006 pitfalls:
1007 src is modified. 0x00 chars are inserted to
1008 terminate strings.
1009 return val, points on the next val chr after ins
1010 0x00
1011
1012 example usage:
1013 while( (pos = next_arg( optarg, ',')) ){
1014 printf("%s\n",optarg);
1015 optarg=pos;
1016 }
1017
1018 */
1019 char *
1020 next_arg(char *src, char needle)
1021 {
1022 char *nextval;
1023 char *p;
1024 char *mvp = 0;
1025
1026 /* EOS */
1027 if (*src == (char) 0x00)
1028 return 0;
1029
1030 p = src;
1031 /* skip escaped needles */
1032 while ((nextval = strchr(p, needle)))
1033 {
1034 mvp = nextval - 1;
1035 /* found backslashed needle */
1036 if (*mvp == '\\' && (mvp > src))
1037 {
1038 /* move string one to the left */
1039 while (*(mvp + 1) != (char) 0x00)
1040 {
1041 *mvp = *(mvp + 1);
1042 *mvp++;
1043 }
1044 *mvp = (char) 0x00;
1045 p = nextval;
1046 }
1047 else
1048 {
1049 p = nextval + 1;
1050 break;
1051 }
1052
1053 }
1054
1055 /* more args available */
1056 if (nextval)
1057 {
1058 *nextval = (char) 0x00;
1059 return ++nextval;
1060 }
1061
1062 /* no more args after this, jump to EOS */
1063 nextval = src + strlen(src);
1064 return nextval;
1065 }
1066
1067
1068 void
1069 toupper_str(char *p)
1070 {
1071 while (*p)
1072 {
1073 if ((*p >= 'a') && (*p <= 'z'))
1074 *p = toupper((int) *p);
1075 p++;
1076 }
1077 }
1078
1079
1080 /* not all clibs got ltoa */
1081 #define LTOA_BUFSIZE (sizeof(long) * 8 + 1)
1082
1083 char *
1084 l_to_a(long N, int base)
1085 {
1086 static char ret[LTOA_BUFSIZE];
1087
1088 char *head = ret, buf[LTOA_BUFSIZE], *tail = buf + sizeof(buf);
1089
1090 register int divrem;
1091
1092 if (base < 36 || 2 > base)
1093 base = 10;
1094
1095 if (N < 0)
1096 {
1097 *head++ = '-';
1098 N = -N;
1099 }
1100
1101 tail = buf + sizeof(buf);
1102 *--tail = 0;
1103
1104 do
1105 {
1106 divrem = N % base;
1107 *--tail = (divrem <= 9) ? divrem + '0' : divrem + 'a' - 10;
1108 N /= base;
1109 }
1110 while (N);
1111
1112 strcpy(head, tail);
1113 return ret;
1114 }
1115
1116
1117 int
1118 load_licence(unsigned char **data)
1119 {
1120 char *home, *path;
1121 struct stat st;
1122 int fd, length;
1123
1124 home = getenv("HOME");
1125 if (home == NULL)
1126 return -1;
1127
1128 path = (char *) xmalloc(strlen(home) + strlen(g_hostname) + sizeof("/.rdesktop/licence."));
1129 sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
1130
1131 fd = open(path, O_RDONLY);
1132 if (fd == -1)
1133 return -1;
1134
1135 if (fstat(fd, &st))
1136 return -1;
1137
1138 *data = (uint8 *) xmalloc(st.st_size);
1139 length = read(fd, *data, st.st_size);
1140 close(fd);
1141 xfree(path);
1142 return length;
1143 }
1144
1145 void
1146 save_licence(unsigned char *data, int length)
1147 {
1148 char *home, *path, *tmppath;
1149 int fd;
1150
1151 home = getenv("HOME");
1152 if (home == NULL)
1153 return;
1154
1155 path = (char *) xmalloc(strlen(home) + strlen(g_hostname) + sizeof("/.rdesktop/licence."));
1156
1157 sprintf(path, "%s/.rdesktop", home);
1158 if ((mkdir(path, 0700) == -1) && errno != EEXIST)
1159 {
1160 perror(path);
1161 return;
1162 }
1163
1164 /* write licence to licence.hostname.new, then atomically rename to licence.hostname */
1165
1166 sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
1167 tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
1168 strcpy(tmppath, path);
1169 strcat(tmppath, ".new");
1170
1171 fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
1172 if (fd == -1)
1173 {
1174 perror(tmppath);
1175 return;
1176 }
1177
1178 if (write(fd, data, length) != length)
1179 {
1180 perror(tmppath);
1181 unlink(tmppath);
1182 }
1183 else if (rename(tmppath, path) == -1)
1184 {
1185 perror(path);
1186 unlink(tmppath);
1187 }
1188
1189 close(fd);
1190 xfree(tmppath);
1191 xfree(path);
1192 }
1193
1194 /* Create the bitmap cache directory */
1195 BOOL
1196 rd_pstcache_mkdir(void)
1197 {
1198 char *home;
1199 char bmpcache_dir[256];
1200
1201 home = getenv("HOME");
1202
1203 if (home == NULL)
1204 return False;
1205
1206 sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop");
1207
1208 if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
1209 {
1210 perror(bmpcache_dir);
1211 return False;
1212 }
1213
1214 sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop/cache");
1215
1216 if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
1217 {
1218 perror(bmpcache_dir);
1219 return False;
1220 }
1221
1222 return True;
1223 }
1224
1225 /* open a file in the .rdesktop directory */
1226 int
1227 rd_open_file(char *filename)
1228 {
1229 char *home;
1230 char fn[256];
1231 int fd;
1232
1233 home = getenv("HOME");
1234 if (home == NULL)
1235 return -1;
1236 sprintf(fn, "%s/.rdesktop/%s", home, filename);
1237 fd = open(fn, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
1238 if (fd == -1)
1239 perror(fn);
1240 return fd;
1241 }
1242
1243 /* close file */
1244 void
1245 rd_close_file(int fd)
1246 {
1247 close(fd);
1248 }
1249
1250 /* read from file*/
1251 int
1252 rd_read_file(int fd, void *ptr, int len)
1253 {
1254 return read(fd, ptr, len);
1255 }
1256
1257 /* write to file */
1258 int
1259 rd_write_file(int fd, void *ptr, int len)
1260 {
1261 return write(fd, ptr, len);
1262 }
1263
1264 /* move file pointer */
1265 int
1266 rd_lseek_file(int fd, int offset)
1267 {
1268 return lseek(fd, offset, SEEK_SET);
1269 }
1270
1271 /* do a write lock on a file */
1272 BOOL
1273 rd_lock_file(int fd, int start, int len)
1274 {
1275 struct flock lock;
1276
1277 lock.l_type = F_WRLCK;
1278 lock.l_whence = SEEK_SET;
1279 lock.l_start = start;
1280 lock.l_len = len;
1281 if (fcntl(fd, F_SETLK, &lock) == -1)
1282 return False;
1283 return True;
1284 }

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