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 hostname[16]; |
47 |
char keymapname[16]; |
48 |
int 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 |
int tcp_port_rdp = 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_orders = True; |
62 |
BOOL g_encryption = True; |
63 |
BOOL packet_encryption = True; |
64 |
BOOL g_desktop_save = True; |
65 |
BOOL g_fullscreen = False; |
66 |
BOOL g_grab_keyboard = True; |
67 |
BOOL g_hide_decorations = False; |
68 |
BOOL g_use_rdp5 = True; |
69 |
BOOL g_console_session = False; |
70 |
BOOL g_numlock_sync = False; |
71 |
extern BOOL g_owncolmap; |
72 |
extern BOOL g_ownbackstore; |
73 |
|
74 |
#ifdef WITH_RDPSND |
75 |
BOOL g_rdpsnd = False; |
76 |
#endif |
77 |
|
78 |
extern RDPDR_DEVICE g_rdpdr_device[]; |
79 |
extern uint32 g_num_devices; |
80 |
|
81 |
#ifdef RDP2VNC |
82 |
extern int rfb_port; |
83 |
extern int defer_time; |
84 |
void |
85 |
rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password, |
86 |
char *shell, char *directory); |
87 |
#endif |
88 |
/* Display usage information */ |
89 |
static void |
90 |
usage(char *program) |
91 |
{ |
92 |
fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n"); |
93 |
fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n"); |
94 |
fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n"); |
95 |
|
96 |
fprintf(stderr, "Usage: %s [options] server[:port]\n", program); |
97 |
#ifdef RDP2VNC |
98 |
fprintf(stderr, " -V: vnc port\n"); |
99 |
fprintf(stderr, " -Q: defer time (ms)\n"); |
100 |
#endif |
101 |
fprintf(stderr, " -u: user name\n"); |
102 |
fprintf(stderr, " -d: domain\n"); |
103 |
fprintf(stderr, " -s: shell\n"); |
104 |
fprintf(stderr, " -c: working directory\n"); |
105 |
fprintf(stderr, " -p: password (- to prompt)\n"); |
106 |
fprintf(stderr, " -n: client hostname\n"); |
107 |
fprintf(stderr, " -k: keyboard layout on server (en-us, de, sv, etc.)\n"); |
108 |
fprintf(stderr, " -g: desktop geometry (WxH)\n"); |
109 |
fprintf(stderr, " -f: full-screen mode\n"); |
110 |
fprintf(stderr, " -b: force bitmap updates\n"); |
111 |
fprintf(stderr, " -B: use BackingStore of X-server (if available)\n"); |
112 |
fprintf(stderr, " -e: disable encryption (French TS)\n"); |
113 |
fprintf(stderr, " -E: disable encryption from client to server\n"); |
114 |
fprintf(stderr, " -m: do not send motion events\n"); |
115 |
fprintf(stderr, " -C: use private colour map\n"); |
116 |
fprintf(stderr, " -D: hide window manager decorations\n"); |
117 |
fprintf(stderr, " -K: keep window manager key bindings\n"); |
118 |
fprintf(stderr, " -S: caption button size (single application mode)\n"); |
119 |
fprintf(stderr, " -T: window title\n"); |
120 |
fprintf(stderr, " -N: enable numlock syncronization\n"); |
121 |
fprintf(stderr, " -a: connection colour depth\n"); |
122 |
fprintf(stderr, " -r: enable specified device redirection (this flag can be repeated)\n"); |
123 |
fprintf(stderr, |
124 |
" '-r comport:COM1=/dev/ttyS0': enable serial redirection of /dev/ttyS0 to COM1\n"); |
125 |
fprintf(stderr, " or COM1=/dev/ttyS0,COM2=/dev/ttyS1\n"); |
126 |
fprintf(stderr, |
127 |
" '-r disk:A=/mnt/floppy': enable redirection of /mnt/floppy to A:\n"); |
128 |
fprintf(stderr, " or A=/mnt/floppy,D=/mnt/cdrom'\n"); |
129 |
fprintf(stderr, |
130 |
" '-r lptport:LPT1=/dev/lp0': enable parallel redirection of /dev/lp0 to LPT1\n"); |
131 |
fprintf(stderr, " or LPT1=/dev/lp0,LPT2=/dev/lp1\n"); |
132 |
fprintf(stderr, " '-r printer:mydeskjet': enable printer redirection\n"); |
133 |
fprintf(stderr, |
134 |
" or mydeskjet=\"HP LaserJet IIIP\" to enter server driver as well\n"); |
135 |
fprintf(stderr, " '-r sound': enable sound redirection\n"); |
136 |
fprintf(stderr, " -0: attach to console\n"); |
137 |
fprintf(stderr, " -4: use RDP version 4\n"); |
138 |
fprintf(stderr, " -5: use RDP version 5 (default)\n"); |
139 |
} |
140 |
|
141 |
static BOOL |
142 |
read_password(char *password, int size) |
143 |
{ |
144 |
struct termios tios; |
145 |
BOOL ret = False; |
146 |
int istty = 0; |
147 |
char *p; |
148 |
|
149 |
if (tcgetattr(STDIN_FILENO, &tios) == 0) |
150 |
{ |
151 |
fprintf(stderr, "Password: "); |
152 |
tios.c_lflag &= ~ECHO; |
153 |
tcsetattr(STDIN_FILENO, TCSANOW, &tios); |
154 |
istty = 1; |
155 |
} |
156 |
|
157 |
if (fgets(password, size, stdin) != NULL) |
158 |
{ |
159 |
ret = True; |
160 |
|
161 |
/* strip final newline */ |
162 |
p = strchr(password, '\n'); |
163 |
if (p != NULL) |
164 |
*p = 0; |
165 |
} |
166 |
|
167 |
if (istty) |
168 |
{ |
169 |
tios.c_lflag |= ECHO; |
170 |
tcsetattr(STDIN_FILENO, TCSANOW, &tios); |
171 |
fprintf(stderr, "\n"); |
172 |
} |
173 |
|
174 |
return ret; |
175 |
} |
176 |
|
177 |
static void |
178 |
parse_server_and_port(char *server) |
179 |
{ |
180 |
char *p; |
181 |
#ifdef IPv6 |
182 |
int addr_colons; |
183 |
#endif |
184 |
|
185 |
#ifdef IPv6 |
186 |
p = server; |
187 |
addr_colons = 0; |
188 |
while (*p) |
189 |
if (*p++ == ':') |
190 |
addr_colons++; |
191 |
if (addr_colons >= 2) |
192 |
{ |
193 |
/* numeric IPv6 style address format - [1:2:3::4]:port */ |
194 |
p = strchr(server, ']'); |
195 |
if (*server == '[' && p != NULL) |
196 |
{ |
197 |
if (*(p + 1) == ':' && *(p + 2) != '\0') |
198 |
tcp_port_rdp = strtol(p + 2, NULL, 10); |
199 |
/* remove the port number and brackets from the address */ |
200 |
*p = '\0'; |
201 |
strncpy(server, server + 1, strlen(server)); |
202 |
} |
203 |
} |
204 |
else |
205 |
{ |
206 |
/* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */ |
207 |
p = strchr(server, ':'); |
208 |
if (p != NULL) |
209 |
{ |
210 |
tcp_port_rdp = strtol(p + 1, NULL, 10); |
211 |
*p = 0; |
212 |
} |
213 |
} |
214 |
#else /* no IPv6 support */ |
215 |
p = strchr(server, ':'); |
216 |
if (p != NULL) |
217 |
{ |
218 |
tcp_port_rdp = strtol(p + 1, NULL, 10); |
219 |
*p = 0; |
220 |
} |
221 |
#endif /* IPv6 */ |
222 |
|
223 |
} |
224 |
|
225 |
/* Client program */ |
226 |
int |
227 |
main(int argc, char *argv[]) |
228 |
{ |
229 |
char server[64]; |
230 |
char fullhostname[64]; |
231 |
char domain[16]; |
232 |
char password[64]; |
233 |
char shell[128]; |
234 |
char directory[32]; |
235 |
BOOL prompt_password, rdp_retval = False; |
236 |
struct passwd *pw; |
237 |
uint32 flags; |
238 |
char *p; |
239 |
int c; |
240 |
|
241 |
int username_option = 0; |
242 |
|
243 |
flags = RDP_LOGON_NORMAL; |
244 |
prompt_password = False; |
245 |
domain[0] = password[0] = shell[0] = directory[0] = 0; |
246 |
strcpy(keymapname, "en-us"); |
247 |
|
248 |
g_num_devices = 0; |
249 |
|
250 |
#ifdef RDP2VNC |
251 |
#define VNCOPT "V:Q:" |
252 |
#else |
253 |
#define VNCOPT |
254 |
#endif |
255 |
|
256 |
while ((c = getopt(argc, argv, VNCOPT "u:d:s:c:p:n:k:g:fbBeEmCDKS:T:Na:r:045h?")) != -1) |
257 |
{ |
258 |
switch (c) |
259 |
{ |
260 |
#ifdef RDP2VNC |
261 |
case 'V': |
262 |
rfb_port = strtol(optarg, NULL, 10); |
263 |
if (rfb_port < 100) |
264 |
rfb_port += 5900; |
265 |
break; |
266 |
|
267 |
case 'Q': |
268 |
defer_time = strtol(optarg, NULL, 10); |
269 |
if (defer_time < 0) |
270 |
defer_time = 0; |
271 |
break; |
272 |
#endif |
273 |
|
274 |
case 'u': |
275 |
STRNCPY(g_username, optarg, sizeof(g_username)); |
276 |
username_option = 1; |
277 |
break; |
278 |
|
279 |
case 'd': |
280 |
STRNCPY(domain, optarg, sizeof(domain)); |
281 |
break; |
282 |
|
283 |
case 's': |
284 |
STRNCPY(shell, optarg, sizeof(shell)); |
285 |
break; |
286 |
|
287 |
case 'c': |
288 |
STRNCPY(directory, optarg, sizeof(directory)); |
289 |
break; |
290 |
|
291 |
case 'p': |
292 |
if ((optarg[0] == '-') && (optarg[1] == 0)) |
293 |
{ |
294 |
prompt_password = True; |
295 |
break; |
296 |
} |
297 |
|
298 |
STRNCPY(password, optarg, sizeof(password)); |
299 |
flags |= RDP_LOGON_AUTO; |
300 |
|
301 |
/* try to overwrite argument so it won't appear in ps */ |
302 |
p = optarg; |
303 |
while (*p) |
304 |
*(p++) = 'X'; |
305 |
break; |
306 |
|
307 |
case 'n': |
308 |
STRNCPY(hostname, optarg, sizeof(hostname)); |
309 |
break; |
310 |
|
311 |
case 'k': |
312 |
STRNCPY(keymapname, optarg, sizeof(keymapname)); |
313 |
break; |
314 |
|
315 |
case 'g': |
316 |
g_fullscreen = False; |
317 |
if (!strcmp(optarg, "workarea")) |
318 |
{ |
319 |
g_width = g_height = 0; |
320 |
break; |
321 |
} |
322 |
|
323 |
g_width = strtol(optarg, &p, 10); |
324 |
if (g_width <= 0) |
325 |
{ |
326 |
error("invalid geometry\n"); |
327 |
return 1; |
328 |
} |
329 |
|
330 |
if (*p == 'x') |
331 |
g_height = strtol(p + 1, NULL, 10); |
332 |
|
333 |
if (g_height <= 0) |
334 |
{ |
335 |
error("invalid geometry\n"); |
336 |
return 1; |
337 |
} |
338 |
|
339 |
if (*p == '%') |
340 |
g_width = -g_width; |
341 |
|
342 |
break; |
343 |
|
344 |
case 'f': |
345 |
g_fullscreen = True; |
346 |
break; |
347 |
|
348 |
case 'b': |
349 |
g_orders = False; |
350 |
break; |
351 |
|
352 |
case 'B': |
353 |
g_ownbackstore = False; |
354 |
break; |
355 |
|
356 |
case 'e': |
357 |
g_encryption = False; |
358 |
break; |
359 |
case 'E': |
360 |
packet_encryption = False; |
361 |
break; |
362 |
case 'm': |
363 |
g_sendmotion = False; |
364 |
break; |
365 |
|
366 |
case 'C': |
367 |
g_owncolmap = True; |
368 |
break; |
369 |
|
370 |
case 'D': |
371 |
g_hide_decorations = True; |
372 |
break; |
373 |
|
374 |
case 'K': |
375 |
g_grab_keyboard = False; |
376 |
break; |
377 |
|
378 |
case 'S': |
379 |
if (!strcmp(optarg, "standard")) |
380 |
{ |
381 |
g_win_button_size = 18; |
382 |
break; |
383 |
} |
384 |
|
385 |
g_win_button_size = strtol(optarg, &p, 10); |
386 |
|
387 |
if (*p) |
388 |
{ |
389 |
error("invalid button size\n"); |
390 |
return 1; |
391 |
} |
392 |
|
393 |
break; |
394 |
|
395 |
case 'T': |
396 |
STRNCPY(g_title, optarg, sizeof(g_title)); |
397 |
break; |
398 |
|
399 |
case 'N': |
400 |
g_numlock_sync = True; |
401 |
break; |
402 |
|
403 |
case 'a': |
404 |
g_server_bpp = strtol(optarg, NULL, 10); |
405 |
if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15 |
406 |
&& g_server_bpp != 24) |
407 |
{ |
408 |
error("invalid server bpp\n"); |
409 |
return 1; |
410 |
} |
411 |
break; |
412 |
|
413 |
case 'r': |
414 |
|
415 |
if (strncmp("sound", optarg, 5) == 0) |
416 |
{ |
417 |
#ifdef WITH_RDPSND |
418 |
g_rdpsnd = True; |
419 |
#else |
420 |
warning("Not compiled with sound support"); |
421 |
#endif |
422 |
} |
423 |
else if (strncmp("disk", optarg, 4) == 0) |
424 |
{ |
425 |
/* -r disk:h:=/mnt/floppy */ |
426 |
disk_enum_devices(&g_num_devices, optarg + 4); |
427 |
} |
428 |
else if (strncmp("comport", optarg, 7) == 0) |
429 |
{ |
430 |
serial_enum_devices(&g_num_devices, optarg + 7); |
431 |
} |
432 |
else if (strncmp("lptport", optarg, 7) == 0) |
433 |
{ |
434 |
parallel_enum_devices(&g_num_devices, optarg + 7); |
435 |
} |
436 |
else if (strncmp("printer", optarg, 7) == 0) |
437 |
{ |
438 |
printer_enum_devices(&g_num_devices, optarg + 7); |
439 |
} |
440 |
else |
441 |
{ |
442 |
warning("Unknown -r argument\n\n\tPossible arguments are: comport, disk, lptport, printer, sound\n"); |
443 |
} |
444 |
break; |
445 |
|
446 |
case '0': |
447 |
g_console_session = True; |
448 |
break; |
449 |
|
450 |
case '4': |
451 |
g_use_rdp5 = False; |
452 |
break; |
453 |
|
454 |
case '5': |
455 |
g_use_rdp5 = True; |
456 |
break; |
457 |
|
458 |
case 'h': |
459 |
case '?': |
460 |
default: |
461 |
usage(argv[0]); |
462 |
return 1; |
463 |
} |
464 |
} |
465 |
|
466 |
if (argc - optind < 1) |
467 |
{ |
468 |
usage(argv[0]); |
469 |
return 1; |
470 |
} |
471 |
|
472 |
STRNCPY(server, argv[optind], sizeof(server)); |
473 |
parse_server_and_port(server); |
474 |
|
475 |
if (!username_option) |
476 |
{ |
477 |
pw = getpwuid(getuid()); |
478 |
if ((pw == NULL) || (pw->pw_name == NULL)) |
479 |
{ |
480 |
error("could not determine username, use -u\n"); |
481 |
return 1; |
482 |
} |
483 |
|
484 |
STRNCPY(g_username, pw->pw_name, sizeof(g_username)); |
485 |
} |
486 |
|
487 |
if (hostname[0] == 0) |
488 |
{ |
489 |
if (gethostname(fullhostname, sizeof(fullhostname)) == -1) |
490 |
{ |
491 |
error("could not determine local hostname, use -n\n"); |
492 |
return 1; |
493 |
} |
494 |
|
495 |
p = strchr(fullhostname, '.'); |
496 |
if (p != NULL) |
497 |
*p = 0; |
498 |
|
499 |
STRNCPY(hostname, fullhostname, sizeof(hostname)); |
500 |
} |
501 |
|
502 |
if (prompt_password && read_password(password, sizeof(password))) |
503 |
flags |= RDP_LOGON_AUTO; |
504 |
|
505 |
if (g_title[0] == 0) |
506 |
{ |
507 |
strcpy(g_title, "rdesktop - "); |
508 |
strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - ")); |
509 |
} |
510 |
|
511 |
#ifdef RDP2VNC |
512 |
rdp2vnc_connect(server, flags, domain, password, shell, directory); |
513 |
return 0; |
514 |
#else |
515 |
|
516 |
if (!ui_init()) |
517 |
return 1; |
518 |
|
519 |
#ifdef WITH_RDPSND |
520 |
if (g_rdpsnd) |
521 |
rdpsnd_init(); |
522 |
#endif |
523 |
rdpdr_init(); |
524 |
|
525 |
if (!rdp_connect(server, flags, domain, password, shell, directory)) |
526 |
return 1; |
527 |
|
528 |
/* By setting encryption to False here, we have an encrypted login |
529 |
packet but unencrypted transfer of other packets */ |
530 |
if (!packet_encryption) |
531 |
g_encryption = False; |
532 |
|
533 |
|
534 |
DEBUG(("Connection successful.\n")); |
535 |
memset(password, 0, sizeof(password)); |
536 |
|
537 |
if (ui_create_window()) |
538 |
{ |
539 |
rdp_retval = rdp_main_loop(); |
540 |
ui_destroy_window(); |
541 |
} |
542 |
|
543 |
DEBUG(("Disconnecting...\n")); |
544 |
rdp_disconnect(); |
545 |
ui_deinit(); |
546 |
|
547 |
if (True == rdp_retval) |
548 |
return 0; |
549 |
else |
550 |
return 2; |
551 |
|
552 |
#endif |
553 |
|
554 |
} |
555 |
|
556 |
#ifdef EGD_SOCKET |
557 |
/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */ |
558 |
static BOOL |
559 |
generate_random_egd(uint8 * buf) |
560 |
{ |
561 |
struct sockaddr_un addr; |
562 |
BOOL ret = False; |
563 |
int fd; |
564 |
|
565 |
fd = socket(AF_UNIX, SOCK_STREAM, 0); |
566 |
if (fd == -1) |
567 |
return False; |
568 |
|
569 |
addr.sun_family = AF_UNIX; |
570 |
memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET)); |
571 |
if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) |
572 |
goto err; |
573 |
|
574 |
/* PRNGD and EGD use a simple communications protocol */ |
575 |
buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */ |
576 |
buf[1] = 32; /* Number of requested random bytes */ |
577 |
if (write(fd, buf, 2) != 2) |
578 |
goto err; |
579 |
|
580 |
if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */ |
581 |
goto err; |
582 |
|
583 |
if (read(fd, buf, 32) != 32) |
584 |
goto err; |
585 |
|
586 |
ret = True; |
587 |
|
588 |
err: |
589 |
close(fd); |
590 |
return ret; |
591 |
} |
592 |
#endif |
593 |
|
594 |
/* Generate a 32-byte random for the secure transport code. */ |
595 |
void |
596 |
generate_random(uint8 * random) |
597 |
{ |
598 |
struct stat st; |
599 |
struct tms tmsbuf; |
600 |
MD5_CTX md5; |
601 |
uint32 *r; |
602 |
int fd, n; |
603 |
|
604 |
/* If we have a kernel random device, try that first */ |
605 |
if (((fd = open("/dev/urandom", O_RDONLY)) != -1) |
606 |
|| ((fd = open("/dev/random", O_RDONLY)) != -1)) |
607 |
{ |
608 |
n = read(fd, random, 32); |
609 |
close(fd); |
610 |
if (n == 32) |
611 |
return; |
612 |
} |
613 |
|
614 |
#ifdef EGD_SOCKET |
615 |
/* As a second preference use an EGD */ |
616 |
if (generate_random_egd(random)) |
617 |
return; |
618 |
#endif |
619 |
|
620 |
/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
621 |
r = (uint32 *) random; |
622 |
r[0] = (getpid()) | (getppid() << 16); |
623 |
r[1] = (getuid()) | (getgid() << 16); |
624 |
r[2] = times(&tmsbuf); /* system uptime (clocks) */ |
625 |
gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */ |
626 |
stat("/tmp", &st); |
627 |
r[5] = st.st_atime; |
628 |
r[6] = st.st_mtime; |
629 |
r[7] = st.st_ctime; |
630 |
|
631 |
/* Hash both halves with MD5 to obscure possible patterns */ |
632 |
MD5_Init(&md5); |
633 |
MD5_Update(&md5, random, 16); |
634 |
MD5_Final(random, &md5); |
635 |
MD5_Update(&md5, random + 16, 16); |
636 |
MD5_Final(random + 16, &md5); |
637 |
} |
638 |
|
639 |
/* malloc; exit if out of memory */ |
640 |
void * |
641 |
xmalloc(int size) |
642 |
{ |
643 |
void *mem = malloc(size); |
644 |
if (mem == NULL) |
645 |
{ |
646 |
error("xmalloc %d\n", size); |
647 |
exit(1); |
648 |
} |
649 |
return mem; |
650 |
} |
651 |
|
652 |
/* realloc; exit if out of memory */ |
653 |
void * |
654 |
xrealloc(void *oldmem, int size) |
655 |
{ |
656 |
void *mem = realloc(oldmem, size); |
657 |
if (mem == NULL) |
658 |
{ |
659 |
error("xrealloc %d\n", size); |
660 |
exit(1); |
661 |
} |
662 |
return mem; |
663 |
} |
664 |
|
665 |
/* free */ |
666 |
void |
667 |
xfree(void *mem) |
668 |
{ |
669 |
free(mem); |
670 |
} |
671 |
|
672 |
/* report an error */ |
673 |
void |
674 |
error(char *format, ...) |
675 |
{ |
676 |
va_list ap; |
677 |
|
678 |
fprintf(stderr, "ERROR: "); |
679 |
|
680 |
va_start(ap, format); |
681 |
vfprintf(stderr, format, ap); |
682 |
va_end(ap); |
683 |
} |
684 |
|
685 |
/* report a warning */ |
686 |
void |
687 |
warning(char *format, ...) |
688 |
{ |
689 |
va_list ap; |
690 |
|
691 |
fprintf(stderr, "WARNING: "); |
692 |
|
693 |
va_start(ap, format); |
694 |
vfprintf(stderr, format, ap); |
695 |
va_end(ap); |
696 |
} |
697 |
|
698 |
/* report an unimplemented protocol feature */ |
699 |
void |
700 |
unimpl(char *format, ...) |
701 |
{ |
702 |
va_list ap; |
703 |
|
704 |
fprintf(stderr, "NOT IMPLEMENTED: "); |
705 |
|
706 |
va_start(ap, format); |
707 |
vfprintf(stderr, format, ap); |
708 |
va_end(ap); |
709 |
} |
710 |
|
711 |
/* produce a hex dump */ |
712 |
void |
713 |
hexdump(unsigned char *p, unsigned int len) |
714 |
{ |
715 |
unsigned char *line = p; |
716 |
int i, thisline, offset = 0; |
717 |
|
718 |
while (offset < len) |
719 |
{ |
720 |
printf("%04x ", offset); |
721 |
thisline = len - offset; |
722 |
if (thisline > 16) |
723 |
thisline = 16; |
724 |
|
725 |
for (i = 0; i < thisline; i++) |
726 |
printf("%02x ", line[i]); |
727 |
|
728 |
for (; i < 16; i++) |
729 |
printf(" "); |
730 |
|
731 |
for (i = 0; i < thisline; i++) |
732 |
printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); |
733 |
|
734 |
printf("\n"); |
735 |
offset += thisline; |
736 |
line += thisline; |
737 |
} |
738 |
} |
739 |
|
740 |
/* |
741 |
input: src is the string we look in for needle. |
742 |
Needle may be escaped by a backslash, in |
743 |
that case we ignore that particular needle. |
744 |
return value: returns next src pointer, for |
745 |
succesive executions, like in a while loop |
746 |
if retval is 0, then there are no more args. |
747 |
pitfalls: |
748 |
src is modified. 0x00 chars are inserted to |
749 |
terminate strings. |
750 |
return val, points on the next val chr after ins |
751 |
0x00 |
752 |
|
753 |
example usage: |
754 |
while( (pos = next_arg( optarg, ',')) ){ |
755 |
printf("%s\n",optarg); |
756 |
optarg=pos; |
757 |
} |
758 |
|
759 |
*/ |
760 |
char * |
761 |
next_arg(char *src, char needle) |
762 |
{ |
763 |
char *nextval; |
764 |
char *p; |
765 |
char *mvp = 0; |
766 |
|
767 |
/* EOS */ |
768 |
if (*src == (char) 0x00) |
769 |
return 0; |
770 |
|
771 |
p = src; |
772 |
/* skip escaped needles */ |
773 |
while ((nextval = strchr(p, needle))) |
774 |
{ |
775 |
mvp = nextval - 1; |
776 |
/* found backslashed needle */ |
777 |
if (*mvp == '\\' && (mvp > src)) |
778 |
{ |
779 |
/* move string one to the left */ |
780 |
while (*(mvp + 1) != (char) 0x00) |
781 |
{ |
782 |
*mvp = *(mvp + 1); |
783 |
*mvp++; |
784 |
} |
785 |
*mvp = (char) 0x00; |
786 |
p = nextval; |
787 |
} |
788 |
else |
789 |
{ |
790 |
p = nextval + 1; |
791 |
break; |
792 |
} |
793 |
|
794 |
} |
795 |
|
796 |
/* more args available */ |
797 |
if (nextval) |
798 |
{ |
799 |
*nextval = (char) 0x00; |
800 |
return ++nextval; |
801 |
} |
802 |
|
803 |
/* no more args after this, jump to EOS */ |
804 |
nextval = src + strlen(src); |
805 |
return nextval; |
806 |
} |
807 |
|
808 |
|
809 |
void |
810 |
toupper_str(char *p) |
811 |
{ |
812 |
while (*p) |
813 |
{ |
814 |
if ((*p >= 'a') && (*p <= 'z')) |
815 |
*p = toupper((int) *p); |
816 |
p++; |
817 |
} |
818 |
} |
819 |
|
820 |
|
821 |
/* not all clibs got ltoa */ |
822 |
#define LTOA_BUFSIZE (sizeof(long) * 8 + 1) |
823 |
|
824 |
char * |
825 |
l_to_a(long N, int base) |
826 |
{ |
827 |
static char ret[LTOA_BUFSIZE]; |
828 |
|
829 |
char *head = ret, buf[LTOA_BUFSIZE], *tail = buf + sizeof(buf); |
830 |
|
831 |
register int divrem; |
832 |
|
833 |
if (base < 36 || 2 > base) |
834 |
base = 10; |
835 |
|
836 |
if (N < 0) |
837 |
{ |
838 |
*head++ = '-'; |
839 |
N = -N; |
840 |
} |
841 |
|
842 |
tail = buf + sizeof(buf); |
843 |
*--tail = 0; |
844 |
|
845 |
do |
846 |
{ |
847 |
divrem = N % base; |
848 |
*--tail = (divrem <= 9) ? divrem + '0' : divrem + 'a' - 10; |
849 |
N /= base; |
850 |
} |
851 |
while (N); |
852 |
|
853 |
strcpy(head, tail); |
854 |
return ret; |
855 |
} |
856 |
|
857 |
|
858 |
int |
859 |
load_licence(unsigned char **data) |
860 |
{ |
861 |
char *home, *path; |
862 |
struct stat st; |
863 |
int fd, length; |
864 |
|
865 |
home = getenv("HOME"); |
866 |
if (home == NULL) |
867 |
return -1; |
868 |
|
869 |
path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence.")); |
870 |
sprintf(path, "%s/.rdesktop/licence.%s", home, hostname); |
871 |
|
872 |
fd = open(path, O_RDONLY); |
873 |
if (fd == -1) |
874 |
return -1; |
875 |
|
876 |
if (fstat(fd, &st)) |
877 |
return -1; |
878 |
|
879 |
*data = (uint8 *) xmalloc(st.st_size); |
880 |
length = read(fd, *data, st.st_size); |
881 |
close(fd); |
882 |
xfree(path); |
883 |
return length; |
884 |
} |
885 |
|
886 |
void |
887 |
save_licence(unsigned char *data, int length) |
888 |
{ |
889 |
char *home, *path, *tmppath; |
890 |
int fd; |
891 |
|
892 |
home = getenv("HOME"); |
893 |
if (home == NULL) |
894 |
return; |
895 |
|
896 |
path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence.")); |
897 |
|
898 |
sprintf(path, "%s/.rdesktop", home); |
899 |
if ((mkdir(path, 0700) == -1) && errno != EEXIST) |
900 |
{ |
901 |
perror(path); |
902 |
return; |
903 |
} |
904 |
|
905 |
/* write licence to licence.hostname.new, then atomically rename to licence.hostname */ |
906 |
|
907 |
sprintf(path, "%s/.rdesktop/licence.%s", home, hostname); |
908 |
tmppath = (char *) xmalloc(strlen(path) + sizeof(".new")); |
909 |
strcpy(tmppath, path); |
910 |
strcat(tmppath, ".new"); |
911 |
|
912 |
fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
913 |
if (fd == -1) |
914 |
{ |
915 |
perror(tmppath); |
916 |
return; |
917 |
} |
918 |
|
919 |
if (write(fd, data, length) != length) |
920 |
{ |
921 |
perror(tmppath); |
922 |
unlink(tmppath); |
923 |
} |
924 |
else if (rename(tmppath, path) == -1) |
925 |
{ |
926 |
perror(path); |
927 |
unlink(tmppath); |
928 |
} |
929 |
|
930 |
close(fd); |
931 |
xfree(tmppath); |
932 |
xfree(path); |
933 |
} |