/[rdesktop]/sourceforge.net/trunk/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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Contents of /sourceforge.net/trunk/rdesktop/rdesktop.c

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Revision 848 - (show annotations)
Sun Mar 13 03:29:19 2005 UTC (19 years, 2 months ago) by jsorg71
File MIME type: text/plain
File size: 26342 byte(s)
added var for new polygon and ellipse orders

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 EGD_SOCKET
34 #include <sys/socket.h> /* socket connect */
35 #include <sys/un.h> /* sockaddr_un */
36 #endif
37
38 #include <openssl/md5.h>
39
40 char g_title[64] = "";
41 char g_username[64];
42 char g_hostname[16];
43 char keymapname[16];
44 int g_keylayout = 0x409; /* Defaults to US keyboard layout */
45
46 int g_width = 800; /* width is special: If 0, the
47 geometry will be fetched from
48 _NET_WORKAREA. If negative,
49 absolute value specifies the
50 percent of the whole screen. */
51 int g_height = 600;
52 int g_xpos = 0;
53 int g_ypos = 0;
54 extern int g_tcp_port_rdp;
55 int g_server_bpp = 8;
56 int g_win_button_size = 0; /* If zero, disable single app mode */
57 BOOL g_bitmap_compression = True;
58 BOOL g_sendmotion = True;
59 BOOL g_bitmap_cache = True;
60 BOOL g_bitmap_cache_persist_enable = False;
61 BOOL g_bitmap_cache_precache = True;
62 BOOL g_encryption = True;
63 BOOL packet_encryption = True;
64 BOOL g_desktop_save = True; /* desktop save order */
65 BOOL g_polygon_ellipse_orders = True; /* polygon / ellipse orders */
66 BOOL g_fullscreen = False;
67 BOOL g_grab_keyboard = True;
68 BOOL g_hide_decorations = False;
69 BOOL g_use_rdp5 = True;
70 BOOL g_console_session = False;
71 BOOL g_numlock_sync = False;
72 BOOL g_owncolmap = False;
73 BOOL g_ownbackstore = True; /* We can't rely on external BackingStore */
74 uint32 g_embed_wnd;
75 uint32 g_rdp5_performanceflags =
76 RDP5_NO_WALLPAPER | RDP5_NO_FULLWINDOWDRAG | RDP5_NO_MENUANIMATIONS;
77
78 #ifdef WITH_RDPSND
79 BOOL g_rdpsnd = False;
80 #endif
81
82 extern RDPDR_DEVICE g_rdpdr_device[];
83 extern uint32 g_num_devices;
84 extern char *g_rdpdr_clientname;
85
86 #ifdef RDP2VNC
87 extern int rfb_port;
88 extern int defer_time;
89 void
90 rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password,
91 char *shell, char *directory);
92 #endif
93 /* Display usage information */
94 static void
95 usage(char *program)
96 {
97 fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
98 fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2005 Matt Chapman.\n");
99 fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
100
101 fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
102 #ifdef RDP2VNC
103 fprintf(stderr, " -V: vnc port\n");
104 fprintf(stderr, " -Q: defer time (ms)\n");
105 #endif
106 fprintf(stderr, " -u: user name\n");
107 fprintf(stderr, " -d: domain\n");
108 fprintf(stderr, " -s: shell\n");
109 fprintf(stderr, " -c: working directory\n");
110 fprintf(stderr, " -p: password (- to prompt)\n");
111 fprintf(stderr, " -n: client hostname\n");
112 fprintf(stderr, " -k: keyboard layout on server (en-us, de, sv, etc.)\n");
113 fprintf(stderr, " -g: desktop geometry (WxH)\n");
114 fprintf(stderr, " -f: full-screen mode\n");
115 fprintf(stderr, " -b: force bitmap updates\n");
116 fprintf(stderr, " -B: use BackingStore of X-server (if available)\n");
117 fprintf(stderr, " -e: disable encryption (French TS)\n");
118 fprintf(stderr, " -E: disable encryption from client to server\n");
119 fprintf(stderr, " -m: do not send motion events\n");
120 fprintf(stderr, " -C: use private colour map\n");
121 fprintf(stderr, " -D: hide window manager decorations\n");
122 fprintf(stderr, " -K: keep window manager key bindings\n");
123 fprintf(stderr, " -S: caption button size (single application mode)\n");
124 fprintf(stderr, " -T: window title\n");
125 fprintf(stderr, " -N: enable numlock syncronization\n");
126 fprintf(stderr, " -X: embed into another window with a given id.\n");
127 fprintf(stderr, " -a: connection colour depth\n");
128 fprintf(stderr, " -z: enable rdp compression\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:floppy=/mnt/floppy': enable redirection of /mnt/floppy to 'floppy' share\n");
137 fprintf(stderr, " or 'floppy=/mnt/floppy,cdrom=/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:fbBeEmzCDKS: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, &p, 10);
446
447 if (g_height <= 0)
448 {
449 error("invalid geometry\n");
450 return 1;
451 }
452
453 if (*p == '%')
454 {
455 g_width = -g_width;
456 p++;
457 }
458
459 if (*p == '+' || *p == '-')
460 g_xpos = strtol(p, &p, 10);
461
462 if (*p == '+' || *p == '-')
463 g_ypos = strtol(p, NULL, 10);
464
465 break;
466
467 case 'f':
468 g_fullscreen = True;
469 break;
470
471 case 'b':
472 g_bitmap_cache = False;
473 break;
474
475 case 'B':
476 g_ownbackstore = False;
477 break;
478
479 case 'e':
480 g_encryption = False;
481 break;
482 case 'E':
483 packet_encryption = False;
484 break;
485 case 'm':
486 g_sendmotion = False;
487 break;
488
489 case 'C':
490 g_owncolmap = True;
491 break;
492
493 case 'D':
494 g_hide_decorations = True;
495 break;
496
497 case 'K':
498 g_grab_keyboard = False;
499 break;
500
501 case 'S':
502 if (!strcmp(optarg, "standard"))
503 {
504 g_win_button_size = 18;
505 break;
506 }
507
508 g_win_button_size = strtol(optarg, &p, 10);
509
510 if (*p)
511 {
512 error("invalid button size\n");
513 return 1;
514 }
515
516 break;
517
518 case 'T':
519 STRNCPY(g_title, optarg, sizeof(g_title));
520 break;
521
522 case 'N':
523 g_numlock_sync = True;
524 break;
525
526 case 'X':
527 g_embed_wnd = strtol(optarg, NULL, 10);
528 break;
529
530 case 'a':
531 g_server_bpp = strtol(optarg, NULL, 10);
532 if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15
533 && g_server_bpp != 24)
534 {
535 error("invalid server bpp\n");
536 return 1;
537 }
538 break;
539
540 case 'z':
541 DEBUG(("rdp compression enabled\n"));
542 flags |= RDP_COMPRESSION;
543 break;
544
545 case 'x':
546 if (strncmp("modem", optarg, 1) == 0)
547 {
548 g_rdp5_performanceflags =
549 RDP5_NO_WALLPAPER | RDP5_NO_FULLWINDOWDRAG |
550 RDP5_NO_MENUANIMATIONS | RDP5_NO_THEMING;
551 }
552 else if (strncmp("broadband", optarg, 1) == 0)
553 {
554 g_rdp5_performanceflags = RDP5_NO_WALLPAPER;
555 }
556 else if (strncmp("lan", optarg, 1) == 0)
557 {
558 g_rdp5_performanceflags = RDP5_DISABLE_NOTHING;
559 }
560 else
561 {
562 g_rdp5_performanceflags = strtol(optarg, NULL, 16);
563 }
564 break;
565
566 case 'P':
567 g_bitmap_cache_persist_enable = True;
568 break;
569
570 case 'r':
571
572 if (strncmp("sound", optarg, 5) == 0)
573 {
574 optarg += 5;
575
576 if (*optarg == ':')
577 {
578 *optarg++;
579 while ((p = next_arg(optarg, ',')))
580 {
581 if (strncmp("remote", optarg, 6) == 0)
582 flags |= RDP_LOGON_LEAVE_AUDIO;
583
584 if (strncmp("local", optarg, 5) == 0)
585 #ifdef WITH_RDPSND
586 g_rdpsnd = True;
587 #else
588 warning("Not compiled with sound support\n");
589 #endif
590
591 if (strncmp("off", optarg, 3) == 0)
592 #ifdef WITH_RDPSND
593 g_rdpsnd = False;
594 #else
595 warning("Not compiled with sound support\n");
596 #endif
597
598 optarg = p;
599 }
600 }
601 else
602 {
603 #ifdef WITH_RDPSND
604 g_rdpsnd = True;
605 #else
606 warning("Not compiled with sound support\n");
607 #endif
608 }
609 }
610 else if (strncmp("disk", optarg, 4) == 0)
611 {
612 /* -r disk:h:=/mnt/floppy */
613 disk_enum_devices(&g_num_devices, optarg + 4);
614 }
615 else if (strncmp("comport", optarg, 7) == 0)
616 {
617 serial_enum_devices(&g_num_devices, optarg + 7);
618 }
619 else if (strncmp("lptport", optarg, 7) == 0)
620 {
621 parallel_enum_devices(&g_num_devices, optarg + 7);
622 }
623 else if (strncmp("printer", optarg, 7) == 0)
624 {
625 printer_enum_devices(&g_num_devices, optarg + 7);
626 }
627 else if (strncmp("clientname", optarg, 7) == 0)
628 {
629 g_rdpdr_clientname = xmalloc(strlen(optarg + 11) + 1);
630 strcpy(g_rdpdr_clientname, optarg + 11);
631 }
632 else
633 {
634 warning("Unknown -r argument\n\n\tPossible arguments are: comport, disk, lptport, printer, sound\n");
635 }
636 break;
637
638 case '0':
639 g_console_session = True;
640 break;
641
642 case '4':
643 g_use_rdp5 = False;
644 break;
645
646 case '5':
647 g_use_rdp5 = True;
648 break;
649
650 case 'h':
651 case '?':
652 default:
653 usage(argv[0]);
654 return 1;
655 }
656 }
657
658 if (argc - optind != 1)
659 {
660 usage(argv[0]);
661 return 1;
662 }
663
664 STRNCPY(server, argv[optind], sizeof(server));
665 parse_server_and_port(server);
666
667 if (!username_option)
668 {
669 pw = getpwuid(getuid());
670 if ((pw == NULL) || (pw->pw_name == NULL))
671 {
672 error("could not determine username, use -u\n");
673 return 1;
674 }
675
676 STRNCPY(g_username, pw->pw_name, sizeof(g_username));
677 }
678
679 if (g_hostname[0] == 0)
680 {
681 if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
682 {
683 error("could not determine local hostname, use -n\n");
684 return 1;
685 }
686
687 p = strchr(fullhostname, '.');
688 if (p != NULL)
689 *p = 0;
690
691 STRNCPY(g_hostname, fullhostname, sizeof(g_hostname));
692 }
693
694 if ((flags & RDP_COMPRESSION) && (g_server_bpp > 8))
695 {
696 warning("rdp compression not supported for bpp > 8, compression disabled\n");
697 flags ^= RDP_COMPRESSION;
698 }
699
700 if (prompt_password && read_password(password, sizeof(password)))
701 flags |= RDP_LOGON_AUTO;
702
703 if (g_title[0] == 0)
704 {
705 strcpy(g_title, "rdesktop - ");
706 strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - "));
707 }
708
709 #ifdef RDP2VNC
710 rdp2vnc_connect(server, flags, domain, password, shell, directory);
711 return 0;
712 #else
713
714 if (!ui_init())
715 return 1;
716
717 #ifdef WITH_RDPSND
718 if (g_rdpsnd)
719 rdpsnd_init();
720 #endif
721 rdpdr_init();
722
723 if (!rdp_connect(server, flags, domain, password, shell, directory))
724 return 1;
725
726 /* By setting encryption to False here, we have an encrypted login
727 packet but unencrypted transfer of other packets */
728 if (!packet_encryption)
729 g_encryption = False;
730
731
732 DEBUG(("Connection successful.\n"));
733 memset(password, 0, sizeof(password));
734
735 if (ui_create_window())
736 {
737 rdp_main_loop(&deactivated, &ext_disc_reason);
738 ui_destroy_window();
739 }
740
741 DEBUG(("Disconnecting...\n"));
742 rdp_disconnect();
743 cache_save_state();
744 ui_deinit();
745
746 if (ext_disc_reason >= 2)
747 print_disconnect_reason(ext_disc_reason);
748
749 if (deactivated)
750 {
751 /* clean disconnect */
752 return 0;
753 }
754 else
755 {
756 if (ext_disc_reason == exDiscReasonAPIInitiatedDisconnect
757 || ext_disc_reason == exDiscReasonAPIInitiatedLogoff)
758 {
759 /* not so clean disconnect, but nothing to worry about */
760 return 0;
761 }
762 else
763 {
764 /* return error */
765 return 2;
766 }
767 }
768
769 #endif
770
771 }
772
773 #ifdef EGD_SOCKET
774 /* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
775 static BOOL
776 generate_random_egd(uint8 * buf)
777 {
778 struct sockaddr_un addr;
779 BOOL ret = False;
780 int fd;
781
782 fd = socket(AF_UNIX, SOCK_STREAM, 0);
783 if (fd == -1)
784 return False;
785
786 addr.sun_family = AF_UNIX;
787 memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
788 if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
789 goto err;
790
791 /* PRNGD and EGD use a simple communications protocol */
792 buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
793 buf[1] = 32; /* Number of requested random bytes */
794 if (write(fd, buf, 2) != 2)
795 goto err;
796
797 if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */
798 goto err;
799
800 if (read(fd, buf, 32) != 32)
801 goto err;
802
803 ret = True;
804
805 err:
806 close(fd);
807 return ret;
808 }
809 #endif
810
811 /* Generate a 32-byte random for the secure transport code. */
812 void
813 generate_random(uint8 * random)
814 {
815 struct stat st;
816 struct tms tmsbuf;
817 MD5_CTX md5;
818 uint32 *r;
819 int fd, n;
820
821 /* If we have a kernel random device, try that first */
822 if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
823 || ((fd = open("/dev/random", O_RDONLY)) != -1))
824 {
825 n = read(fd, random, 32);
826 close(fd);
827 if (n == 32)
828 return;
829 }
830
831 #ifdef EGD_SOCKET
832 /* As a second preference use an EGD */
833 if (generate_random_egd(random))
834 return;
835 #endif
836
837 /* Otherwise use whatever entropy we can gather - ideas welcome. */
838 r = (uint32 *) random;
839 r[0] = (getpid()) | (getppid() << 16);
840 r[1] = (getuid()) | (getgid() << 16);
841 r[2] = times(&tmsbuf); /* system uptime (clocks) */
842 gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */
843 stat("/tmp", &st);
844 r[5] = st.st_atime;
845 r[6] = st.st_mtime;
846 r[7] = st.st_ctime;
847
848 /* Hash both halves with MD5 to obscure possible patterns */
849 MD5_Init(&md5);
850 MD5_Update(&md5, random, 16);
851 MD5_Final(random, &md5);
852 MD5_Update(&md5, random + 16, 16);
853 MD5_Final(random + 16, &md5);
854 }
855
856 /* malloc; exit if out of memory */
857 void *
858 xmalloc(int size)
859 {
860 void *mem = malloc(size);
861 if (mem == NULL)
862 {
863 error("xmalloc %d\n", size);
864 exit(1);
865 }
866 return mem;
867 }
868
869 /* realloc; exit if out of memory */
870 void *
871 xrealloc(void *oldmem, int size)
872 {
873 void *mem;
874
875 if (size < 1)
876 size = 1;
877 mem = realloc(oldmem, size);
878 if (mem == NULL)
879 {
880 error("xrealloc %d\n", size);
881 exit(1);
882 }
883 return mem;
884 }
885
886 /* free */
887 void
888 xfree(void *mem)
889 {
890 free(mem);
891 }
892
893 /* report an error */
894 void
895 error(char *format, ...)
896 {
897 va_list ap;
898
899 fprintf(stderr, "ERROR: ");
900
901 va_start(ap, format);
902 vfprintf(stderr, format, ap);
903 va_end(ap);
904 }
905
906 /* report a warning */
907 void
908 warning(char *format, ...)
909 {
910 va_list ap;
911
912 fprintf(stderr, "WARNING: ");
913
914 va_start(ap, format);
915 vfprintf(stderr, format, ap);
916 va_end(ap);
917 }
918
919 /* report an unimplemented protocol feature */
920 void
921 unimpl(char *format, ...)
922 {
923 va_list ap;
924
925 fprintf(stderr, "NOT IMPLEMENTED: ");
926
927 va_start(ap, format);
928 vfprintf(stderr, format, ap);
929 va_end(ap);
930 }
931
932 /* produce a hex dump */
933 void
934 hexdump(unsigned char *p, unsigned int len)
935 {
936 unsigned char *line = p;
937 int i, thisline, offset = 0;
938
939 while (offset < len)
940 {
941 printf("%04x ", offset);
942 thisline = len - offset;
943 if (thisline > 16)
944 thisline = 16;
945
946 for (i = 0; i < thisline; i++)
947 printf("%02x ", line[i]);
948
949 for (; i < 16; i++)
950 printf(" ");
951
952 for (i = 0; i < thisline; i++)
953 printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
954
955 printf("\n");
956 offset += thisline;
957 line += thisline;
958 }
959 }
960
961 /*
962 input: src is the string we look in for needle.
963 Needle may be escaped by a backslash, in
964 that case we ignore that particular needle.
965 return value: returns next src pointer, for
966 succesive executions, like in a while loop
967 if retval is 0, then there are no more args.
968 pitfalls:
969 src is modified. 0x00 chars are inserted to
970 terminate strings.
971 return val, points on the next val chr after ins
972 0x00
973
974 example usage:
975 while( (pos = next_arg( optarg, ',')) ){
976 printf("%s\n",optarg);
977 optarg=pos;
978 }
979
980 */
981 char *
982 next_arg(char *src, char needle)
983 {
984 char *nextval;
985 char *p;
986 char *mvp = 0;
987
988 /* EOS */
989 if (*src == (char) 0x00)
990 return 0;
991
992 p = src;
993 /* skip escaped needles */
994 while ((nextval = strchr(p, needle)))
995 {
996 mvp = nextval - 1;
997 /* found backslashed needle */
998 if (*mvp == '\\' && (mvp > src))
999 {
1000 /* move string one to the left */
1001 while (*(mvp + 1) != (char) 0x00)
1002 {
1003 *mvp = *(mvp + 1);
1004 *mvp++;
1005 }
1006 *mvp = (char) 0x00;
1007 p = nextval;
1008 }
1009 else
1010 {
1011 p = nextval + 1;
1012 break;
1013 }
1014
1015 }
1016
1017 /* more args available */
1018 if (nextval)
1019 {
1020 *nextval = (char) 0x00;
1021 return ++nextval;
1022 }
1023
1024 /* no more args after this, jump to EOS */
1025 nextval = src + strlen(src);
1026 return nextval;
1027 }
1028
1029
1030 void
1031 toupper_str(char *p)
1032 {
1033 while (*p)
1034 {
1035 if ((*p >= 'a') && (*p <= 'z'))
1036 *p = toupper((int) *p);
1037 p++;
1038 }
1039 }
1040
1041
1042 /* not all clibs got ltoa */
1043 #define LTOA_BUFSIZE (sizeof(long) * 8 + 1)
1044
1045 char *
1046 l_to_a(long N, int base)
1047 {
1048 static char ret[LTOA_BUFSIZE];
1049
1050 char *head = ret, buf[LTOA_BUFSIZE], *tail = buf + sizeof(buf);
1051
1052 register int divrem;
1053
1054 if (base < 36 || 2 > base)
1055 base = 10;
1056
1057 if (N < 0)
1058 {
1059 *head++ = '-';
1060 N = -N;
1061 }
1062
1063 tail = buf + sizeof(buf);
1064 *--tail = 0;
1065
1066 do
1067 {
1068 divrem = N % base;
1069 *--tail = (divrem <= 9) ? divrem + '0' : divrem + 'a' - 10;
1070 N /= base;
1071 }
1072 while (N);
1073
1074 strcpy(head, tail);
1075 return ret;
1076 }
1077
1078
1079 int
1080 load_licence(unsigned char **data)
1081 {
1082 char *home, *path;
1083 struct stat st;
1084 int fd, length;
1085
1086 home = getenv("HOME");
1087 if (home == NULL)
1088 return -1;
1089
1090 path = (char *) xmalloc(strlen(home) + strlen(g_hostname) + sizeof("/.rdesktop/licence."));
1091 sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
1092
1093 fd = open(path, O_RDONLY);
1094 if (fd == -1)
1095 return -1;
1096
1097 if (fstat(fd, &st))
1098 return -1;
1099
1100 *data = (uint8 *) xmalloc(st.st_size);
1101 length = read(fd, *data, st.st_size);
1102 close(fd);
1103 xfree(path);
1104 return length;
1105 }
1106
1107 void
1108 save_licence(unsigned char *data, int length)
1109 {
1110 char *home, *path, *tmppath;
1111 int fd;
1112
1113 home = getenv("HOME");
1114 if (home == NULL)
1115 return;
1116
1117 path = (char *) xmalloc(strlen(home) + strlen(g_hostname) + sizeof("/.rdesktop/licence."));
1118
1119 sprintf(path, "%s/.rdesktop", home);
1120 if ((mkdir(path, 0700) == -1) && errno != EEXIST)
1121 {
1122 perror(path);
1123 return;
1124 }
1125
1126 /* write licence to licence.hostname.new, then atomically rename to licence.hostname */
1127
1128 sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
1129 tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
1130 strcpy(tmppath, path);
1131 strcat(tmppath, ".new");
1132
1133 fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
1134 if (fd == -1)
1135 {
1136 perror(tmppath);
1137 return;
1138 }
1139
1140 if (write(fd, data, length) != length)
1141 {
1142 perror(tmppath);
1143 unlink(tmppath);
1144 }
1145 else if (rename(tmppath, path) == -1)
1146 {
1147 perror(path);
1148 unlink(tmppath);
1149 }
1150
1151 close(fd);
1152 xfree(tmppath);
1153 xfree(path);
1154 }
1155
1156 /* Create the bitmap cache directory */
1157 BOOL
1158 rd_pstcache_mkdir(void)
1159 {
1160 char *home;
1161 char bmpcache_dir[256];
1162
1163 home = getenv("HOME");
1164
1165 if (home == NULL)
1166 return False;
1167
1168 sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop");
1169
1170 if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
1171 {
1172 perror(bmpcache_dir);
1173 return False;
1174 }
1175
1176 sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop/cache");
1177
1178 if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
1179 {
1180 perror(bmpcache_dir);
1181 return False;
1182 }
1183
1184 return True;
1185 }
1186
1187 /* open a file in the .rdesktop directory */
1188 int
1189 rd_open_file(char *filename)
1190 {
1191 char *home;
1192 char fn[256];
1193 int fd;
1194
1195 home = getenv("HOME");
1196 if (home == NULL)
1197 return -1;
1198 sprintf(fn, "%s/.rdesktop/%s", home, filename);
1199 fd = open(fn, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
1200 if (fd == -1)
1201 perror(fn);
1202 return fd;
1203 }
1204
1205 /* close file */
1206 void
1207 rd_close_file(int fd)
1208 {
1209 close(fd);
1210 }
1211
1212 /* read from file*/
1213 int
1214 rd_read_file(int fd, void *ptr, int len)
1215 {
1216 return read(fd, ptr, len);
1217 }
1218
1219 /* write to file */
1220 int
1221 rd_write_file(int fd, void *ptr, int len)
1222 {
1223 return write(fd, ptr, len);
1224 }
1225
1226 /* move file pointer */
1227 int
1228 rd_lseek_file(int fd, int offset)
1229 {
1230 return lseek(fd, offset, SEEK_SET);
1231 }
1232
1233 /* do a write lock on a file */
1234 BOOL
1235 rd_lock_file(int fd, int start, int len)
1236 {
1237 struct flock lock;
1238
1239 lock.l_type = F_WRLCK;
1240 lock.l_whence = SEEK_SET;
1241 lock.l_start = start;
1242 lock.l_len = len;
1243 if (fcntl(fd, F_SETLK, &lock) == -1)
1244 return False;
1245 return True;
1246 }

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