1 |
/* |
/* -*- c-basic-offset: 8 -*- |
2 |
rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
3 |
Entrypoint and utility functions |
Entrypoint and utility functions |
4 |
Copyright (C) Matthew Chapman 1999-2000 |
Copyright (C) Matthew Chapman 1999-2003 |
5 |
|
|
6 |
This program is free software; you can redistribute it and/or modify |
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 |
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 |
the Free Software Foundation; either version 2 of the License, or |
9 |
(at your option) any later version. |
(at your option) any later version. |
10 |
|
|
11 |
This program is distributed in the hope that it will be useful, |
This program is distributed in the hope that it will be useful, |
12 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
GNU General Public License for more details. |
GNU General Public License for more details. |
15 |
|
|
16 |
You should have received a copy of the GNU General Public License |
You should have received a copy of the GNU General Public License |
17 |
along with this program; if not, write to the Free Software |
along with this program; if not, write to the Free Software |
18 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 |
*/ |
*/ |
20 |
|
|
21 |
#include <stdlib.h> /* malloc realloc free */ |
#include <stdarg.h> /* va_list va_start va_end */ |
22 |
#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */ |
#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */ |
23 |
#include <fcntl.h> /* open */ |
#include <fcntl.h> /* open */ |
24 |
#include <getopt.h> /* getopt */ |
#include <pwd.h> /* getpwuid */ |
25 |
#include <pwd.h> /* getpwuid */ |
#include <termios.h> /* tcgetattr tcsetattr */ |
26 |
#include <sys/stat.h> /* stat */ |
#include <sys/stat.h> /* stat */ |
27 |
#include <sys/time.h> /* gettimeofday */ |
#include <sys/time.h> /* gettimeofday */ |
28 |
#include <sys/times.h> /* times */ |
#include <sys/times.h> /* times */ |
29 |
|
#include <errno.h> |
30 |
#include "rdesktop.h" |
#include "rdesktop.h" |
31 |
|
|
32 |
char username[16]; |
#ifdef EGD_SOCKET |
33 |
|
#include <sys/socket.h> /* socket connect */ |
34 |
|
#include <sys/un.h> /* sockaddr_un */ |
35 |
|
#endif |
36 |
|
|
37 |
|
#ifdef WITH_OPENSSL |
38 |
|
#include <openssl/md5.h> |
39 |
|
#else |
40 |
|
#include "crypto/md5.h" |
41 |
|
#endif |
42 |
|
|
43 |
|
char g_title[64] = ""; |
44 |
|
char g_username[64]; |
45 |
char hostname[16]; |
char hostname[16]; |
46 |
int width = 800; |
char keymapname[16]; |
47 |
int height = 600; |
int keylayout = 0x409; /* Defaults to US keyboard layout */ |
|
int keylayout = 0x409; |
|
|
BOOL motion = False; |
|
|
BOOL orders = True; |
|
|
BOOL licence = True; |
|
48 |
|
|
49 |
|
int g_width = 800; /* width is special: If 0, the |
50 |
|
geometry will be fetched from |
51 |
|
_NET_WORKAREA. If negative, |
52 |
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absolute value specifies the |
53 |
|
percent of the whole screen. */ |
54 |
|
int g_height = 600; |
55 |
|
int tcp_port_rdp = TCP_PORT_RDP; |
56 |
|
int g_server_bpp = 8; |
57 |
|
int g_win_button_size = 0; /* If zero, disable single app mode */ |
58 |
|
BOOL g_bitmap_compression = True; |
59 |
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BOOL g_sendmotion = True; |
60 |
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BOOL g_orders = True; |
61 |
|
BOOL g_encryption = True; |
62 |
|
BOOL packet_encryption = True; |
63 |
|
BOOL g_desktop_save = True; |
64 |
|
BOOL g_fullscreen = False; |
65 |
|
BOOL g_grab_keyboard = True; |
66 |
|
BOOL g_hide_decorations = False; |
67 |
|
BOOL g_use_rdp5 = True; |
68 |
|
BOOL g_console_session = False; |
69 |
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BOOL g_numlock_sync = False; |
70 |
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extern BOOL g_owncolmap; |
71 |
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|
72 |
|
#ifdef WITH_RDPSND |
73 |
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BOOL g_rdpsnd = False; |
74 |
|
#endif |
75 |
|
|
76 |
|
#ifdef RDP2VNC |
77 |
|
extern int rfb_port; |
78 |
|
extern int defer_time; |
79 |
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void |
80 |
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rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password, |
81 |
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char *shell, char *directory); |
82 |
|
#endif |
83 |
/* Display usage information */ |
/* Display usage information */ |
84 |
static void usage(char *program) |
static void |
85 |
|
usage(char *program) |
86 |
{ |
{ |
87 |
STATUS("Usage: %s [options] server\n", program); |
fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n"); |
88 |
STATUS(" -u: user name\n"); |
fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n"); |
89 |
STATUS(" -n: client hostname\n"); |
fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n"); |
90 |
STATUS(" -w: desktop width\n"); |
|
91 |
STATUS(" -h: desktop height\n"); |
fprintf(stderr, "Usage: %s [options] server[:port]\n", program); |
92 |
STATUS(" -k: keyboard layout (hex)\n"); |
#ifdef RDP2VNC |
93 |
STATUS(" -m: send motion events\n"); |
fprintf(stderr, " -V: vnc port\n"); |
94 |
STATUS(" -b: force bitmap updates\n"); |
fprintf(stderr, " -Q: defer time (ms)\n"); |
95 |
STATUS(" -l: do not request licence\n\n"); |
#endif |
96 |
|
fprintf(stderr, " -u: user name\n"); |
97 |
|
fprintf(stderr, " -d: domain\n"); |
98 |
|
fprintf(stderr, " -s: shell\n"); |
99 |
|
fprintf(stderr, " -c: working directory\n"); |
100 |
|
fprintf(stderr, " -p: password (- to prompt)\n"); |
101 |
|
fprintf(stderr, " -n: client hostname\n"); |
102 |
|
fprintf(stderr, " -k: keyboard layout on server (en-us, de, sv, etc.)\n"); |
103 |
|
fprintf(stderr, " -g: desktop geometry (WxH)\n"); |
104 |
|
fprintf(stderr, " -f: full-screen mode\n"); |
105 |
|
fprintf(stderr, " -b: force bitmap updates\n"); |
106 |
|
fprintf(stderr, " -e: disable encryption (French TS)\n"); |
107 |
|
fprintf(stderr, " -E: disable encryption from client to server\n"); |
108 |
|
fprintf(stderr, " -m: do not send motion events\n"); |
109 |
|
fprintf(stderr, " -C: use private colour map\n"); |
110 |
|
fprintf(stderr, " -D: hide window manager decorations\n"); |
111 |
|
fprintf(stderr, " -K: keep window manager key bindings\n"); |
112 |
|
fprintf(stderr, " -S: caption button size (single application mode)\n"); |
113 |
|
fprintf(stderr, " -T: window title\n"); |
114 |
|
fprintf(stderr, " -N: enable numlock syncronization\n"); |
115 |
|
fprintf(stderr, " -a: connection colour depth\n"); |
116 |
|
fprintf(stderr, " -r: enable specified device redirection (currently: sound)\n"); |
117 |
|
fprintf(stderr, " -0: attach to console\n"); |
118 |
|
fprintf(stderr, " -4: use RDP version 4\n"); |
119 |
|
fprintf(stderr, " -5: use RDP version 5 (default)\n"); |
120 |
|
} |
121 |
|
|
122 |
|
static BOOL |
123 |
|
read_password(char *password, int size) |
124 |
|
{ |
125 |
|
struct termios tios; |
126 |
|
BOOL ret = False; |
127 |
|
int istty = 0; |
128 |
|
char *p; |
129 |
|
|
130 |
|
if (tcgetattr(STDIN_FILENO, &tios) == 0) |
131 |
|
{ |
132 |
|
fprintf(stderr, "Password: "); |
133 |
|
tios.c_lflag &= ~ECHO; |
134 |
|
tcsetattr(STDIN_FILENO, TCSANOW, &tios); |
135 |
|
istty = 1; |
136 |
|
} |
137 |
|
|
138 |
|
if (fgets(password, size, stdin) != NULL) |
139 |
|
{ |
140 |
|
ret = True; |
141 |
|
|
142 |
|
/* strip final newline */ |
143 |
|
p = strchr(password, '\n'); |
144 |
|
if (p != NULL) |
145 |
|
*p = 0; |
146 |
|
} |
147 |
|
|
148 |
|
if (istty) |
149 |
|
{ |
150 |
|
tios.c_lflag |= ECHO; |
151 |
|
tcsetattr(STDIN_FILENO, TCSANOW, &tios); |
152 |
|
fprintf(stderr, "\n"); |
153 |
|
} |
154 |
|
|
155 |
|
return ret; |
156 |
|
} |
157 |
|
|
158 |
|
static void |
159 |
|
parse_server_and_port(char *server) |
160 |
|
{ |
161 |
|
char *p; |
162 |
|
#ifdef IPv6 |
163 |
|
int addr_colons; |
164 |
|
#endif |
165 |
|
|
166 |
|
#ifdef IPv6 |
167 |
|
p = server; |
168 |
|
addr_colons = 0; |
169 |
|
while (*p) |
170 |
|
if (*p++ == ':') |
171 |
|
addr_colons++; |
172 |
|
if (addr_colons >= 2) |
173 |
|
{ |
174 |
|
/* numeric IPv6 style address format - [1:2:3::4]:port */ |
175 |
|
p = strchr(server, ']'); |
176 |
|
if (*server == '[' && p != NULL) |
177 |
|
{ |
178 |
|
if (*(p + 1) == ':' && *(p + 2) != '\0') |
179 |
|
tcp_port_rdp = strtol(p + 2, NULL, 10); |
180 |
|
/* remove the port number and brackets from the address */ |
181 |
|
*p = '\0'; |
182 |
|
strncpy(server, server + 1, strlen(server)); |
183 |
|
} |
184 |
|
} |
185 |
|
else |
186 |
|
{ |
187 |
|
/* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */ |
188 |
|
p = strchr(server, ':'); |
189 |
|
if (p != NULL) |
190 |
|
{ |
191 |
|
tcp_port_rdp = strtol(p + 1, NULL, 10); |
192 |
|
*p = 0; |
193 |
|
} |
194 |
|
} |
195 |
|
#else /* no IPv6 support */ |
196 |
|
p = strchr(server, ':'); |
197 |
|
if (p != NULL) |
198 |
|
{ |
199 |
|
tcp_port_rdp = strtol(p + 1, NULL, 10); |
200 |
|
*p = 0; |
201 |
|
} |
202 |
|
#endif /* IPv6 */ |
203 |
|
|
204 |
} |
} |
205 |
|
|
206 |
/* Client program */ |
/* Client program */ |
207 |
int main(int argc, char *argv[]) |
int |
208 |
|
main(int argc, char *argv[]) |
209 |
{ |
{ |
210 |
|
char server[64]; |
211 |
|
char fullhostname[64]; |
212 |
|
char domain[16]; |
213 |
|
char password[64]; |
214 |
|
char shell[128]; |
215 |
|
char directory[32]; |
216 |
|
BOOL prompt_password, rdp_retval = False; |
217 |
struct passwd *pw; |
struct passwd *pw; |
218 |
char *server; |
uint32 flags; |
219 |
char title[32]; |
char *p; |
220 |
int c; |
int c; |
221 |
|
int username_option = 0; |
222 |
|
|
223 |
STATUS("rdesktop: A Remote Desktop Protocol client.\n"); |
flags = RDP_LOGON_NORMAL; |
224 |
STATUS("Version "VERSION". Copyright (C) 1999-2000 Matt Chapman.\n\n"); |
prompt_password = False; |
225 |
|
domain[0] = password[0] = shell[0] = directory[0] = 0; |
226 |
|
strcpy(keymapname, "en-us"); |
227 |
|
|
228 |
|
#ifdef RDP2VNC |
229 |
|
#define VNCOPT "V:Q:" |
230 |
|
#else |
231 |
|
#define VNCOPT |
232 |
|
#endif |
233 |
|
|
234 |
while ((c = getopt(argc, argv, "u:n:w:h:k:mbl?")) != -1) |
while ((c = getopt(argc, argv, VNCOPT "u:d:s:c:p:n:k:g:fbeEmCDKS:T:Na:r:045h?")) != -1) |
235 |
{ |
{ |
236 |
switch (c) |
switch (c) |
237 |
{ |
{ |
238 |
|
#ifdef RDP2VNC |
239 |
|
case 'V': |
240 |
|
rfb_port = strtol(optarg, NULL, 10); |
241 |
|
if (rfb_port < 100) |
242 |
|
rfb_port += 5900; |
243 |
|
break; |
244 |
|
|
245 |
|
case 'Q': |
246 |
|
defer_time = strtol(optarg, NULL, 10); |
247 |
|
if (defer_time < 0) |
248 |
|
defer_time = 0; |
249 |
|
break; |
250 |
|
#endif |
251 |
|
|
252 |
case 'u': |
case 'u': |
253 |
strncpy(username, optarg, sizeof(username)); |
STRNCPY(g_username, optarg, sizeof(g_username)); |
254 |
|
username_option = 1; |
255 |
break; |
break; |
256 |
|
|
257 |
case 'n': |
case 'd': |
258 |
strncpy(hostname, optarg, sizeof(hostname)); |
STRNCPY(domain, optarg, sizeof(domain)); |
259 |
break; |
break; |
260 |
|
|
261 |
case 'w': |
case 's': |
262 |
width = strtol(optarg, NULL, 10); |
STRNCPY(shell, optarg, sizeof(shell)); |
263 |
break; |
break; |
264 |
|
|
265 |
case 'h': |
case 'c': |
266 |
height = strtol(optarg, NULL, 10); |
STRNCPY(directory, optarg, sizeof(directory)); |
267 |
|
break; |
268 |
|
|
269 |
|
case 'p': |
270 |
|
if ((optarg[0] == '-') && (optarg[1] == 0)) |
271 |
|
{ |
272 |
|
prompt_password = True; |
273 |
|
break; |
274 |
|
} |
275 |
|
|
276 |
|
STRNCPY(password, optarg, sizeof(password)); |
277 |
|
flags |= RDP_LOGON_AUTO; |
278 |
|
|
279 |
|
/* try to overwrite argument so it won't appear in ps */ |
280 |
|
p = optarg; |
281 |
|
while (*p) |
282 |
|
*(p++) = 'X'; |
283 |
|
break; |
284 |
|
|
285 |
|
case 'n': |
286 |
|
STRNCPY(hostname, optarg, sizeof(hostname)); |
287 |
break; |
break; |
288 |
|
|
289 |
case 'k': |
case 'k': |
290 |
keylayout = strtol(optarg, NULL, 16); |
STRNCPY(keymapname, optarg, sizeof(keymapname)); |
291 |
break; |
break; |
292 |
|
|
293 |
case 'm': |
case 'g': |
294 |
motion = True; |
g_fullscreen = False; |
295 |
|
if (!strcmp(optarg, "workarea")) |
296 |
|
{ |
297 |
|
g_width = g_height = 0; |
298 |
|
break; |
299 |
|
} |
300 |
|
|
301 |
|
g_width = strtol(optarg, &p, 10); |
302 |
|
if (g_width <= 0) |
303 |
|
{ |
304 |
|
error("invalid geometry\n"); |
305 |
|
return 1; |
306 |
|
} |
307 |
|
|
308 |
|
if (*p == 'x') |
309 |
|
g_height = strtol(p + 1, NULL, 10); |
310 |
|
|
311 |
|
if (g_height <= 0) |
312 |
|
{ |
313 |
|
error("invalid geometry\n"); |
314 |
|
return 1; |
315 |
|
} |
316 |
|
|
317 |
|
if (*p == '%') |
318 |
|
g_width = -g_width; |
319 |
|
|
320 |
|
break; |
321 |
|
|
322 |
|
case 'f': |
323 |
|
g_fullscreen = True; |
324 |
break; |
break; |
325 |
|
|
326 |
case 'b': |
case 'b': |
327 |
orders = False; |
g_orders = False; |
328 |
|
break; |
329 |
|
|
330 |
|
case 'e': |
331 |
|
g_encryption = False; |
332 |
|
break; |
333 |
|
case 'E': |
334 |
|
packet_encryption = False; |
335 |
|
break; |
336 |
|
case 'm': |
337 |
|
g_sendmotion = False; |
338 |
|
break; |
339 |
|
|
340 |
|
case 'C': |
341 |
|
g_owncolmap = True; |
342 |
|
break; |
343 |
|
|
344 |
|
case 'D': |
345 |
|
g_hide_decorations = True; |
346 |
|
break; |
347 |
|
|
348 |
|
case 'K': |
349 |
|
g_grab_keyboard = False; |
350 |
|
break; |
351 |
|
|
352 |
|
case 'S': |
353 |
|
if (!strcmp(optarg, "standard")) |
354 |
|
{ |
355 |
|
g_win_button_size = 18; |
356 |
|
break; |
357 |
|
} |
358 |
|
|
359 |
|
g_win_button_size = strtol(optarg, &p, 10); |
360 |
|
|
361 |
|
if (*p) |
362 |
|
{ |
363 |
|
error("invalid button size\n"); |
364 |
|
return 1; |
365 |
|
} |
366 |
|
|
367 |
|
break; |
368 |
|
|
369 |
|
case 'T': |
370 |
|
STRNCPY(g_title, optarg, sizeof(g_title)); |
371 |
|
break; |
372 |
|
|
373 |
|
case 'N': |
374 |
|
g_numlock_sync = True; |
375 |
|
break; |
376 |
|
|
377 |
|
case 'a': |
378 |
|
g_server_bpp = strtol(optarg, NULL, 10); |
379 |
|
if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15 |
380 |
|
&& g_server_bpp != 24) |
381 |
|
{ |
382 |
|
error("invalid server bpp\n"); |
383 |
|
return 1; |
384 |
|
} |
385 |
|
break; |
386 |
|
|
387 |
|
case 'r': |
388 |
|
if (!strcmp(optarg, "sound")) |
389 |
|
#ifdef WITH_RDPSND |
390 |
|
g_rdpsnd = True; |
391 |
|
#else |
392 |
|
warning("Not compiled with sound support"); |
393 |
|
#endif |
394 |
|
break; |
395 |
|
|
396 |
|
case '0': |
397 |
|
g_console_session = True; |
398 |
|
break; |
399 |
|
|
400 |
|
case '4': |
401 |
|
g_use_rdp5 = False; |
402 |
break; |
break; |
403 |
|
|
404 |
case 'l': |
case '5': |
405 |
licence = False; |
g_use_rdp5 = True; |
406 |
break; |
break; |
407 |
|
|
408 |
|
case 'h': |
409 |
case '?': |
case '?': |
410 |
default: |
default: |
411 |
usage(argv[0]); |
usage(argv[0]); |
419 |
return 1; |
return 1; |
420 |
} |
} |
421 |
|
|
422 |
server = argv[optind]; |
STRNCPY(server, argv[optind], sizeof(server)); |
423 |
|
parse_server_and_port(server); |
424 |
|
|
425 |
if (username[0] == 0) |
if (!username_option) |
426 |
{ |
{ |
427 |
pw = getpwuid(getuid()); |
pw = getpwuid(getuid()); |
428 |
if ((pw == NULL) || (pw->pw_name == NULL)) |
if ((pw == NULL) || (pw->pw_name == NULL)) |
429 |
{ |
{ |
430 |
STATUS("Could not determine user name.\n"); |
error("could not determine username, use -u\n"); |
431 |
return 1; |
return 1; |
432 |
} |
} |
433 |
|
|
434 |
strncpy(username, pw->pw_name, sizeof(username)); |
STRNCPY(g_username, pw->pw_name, sizeof(g_username)); |
435 |
} |
} |
436 |
|
|
437 |
if (hostname[0] == 0) |
if (hostname[0] == 0) |
438 |
{ |
{ |
439 |
if (gethostname(hostname, sizeof(hostname)) == -1) |
if (gethostname(fullhostname, sizeof(fullhostname)) == -1) |
440 |
{ |
{ |
441 |
STATUS("Could not determine host name.\n"); |
error("could not determine local hostname, use -n\n"); |
442 |
return 1; |
return 1; |
443 |
} |
} |
444 |
|
|
445 |
|
p = strchr(fullhostname, '.'); |
446 |
|
if (p != NULL) |
447 |
|
*p = 0; |
448 |
|
|
449 |
|
STRNCPY(hostname, fullhostname, sizeof(hostname)); |
450 |
|
} |
451 |
|
|
452 |
|
if (prompt_password && read_password(password, sizeof(password))) |
453 |
|
flags |= RDP_LOGON_AUTO; |
454 |
|
|
455 |
|
if (g_title[0] == 0) |
456 |
|
{ |
457 |
|
strcpy(g_title, "rdesktop - "); |
458 |
|
strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - ")); |
459 |
} |
} |
460 |
|
|
461 |
if (!rdp_connect(server)) |
#ifdef RDP2VNC |
462 |
|
rdp2vnc_connect(server, flags, domain, password, shell, directory); |
463 |
|
return 0; |
464 |
|
#else |
465 |
|
|
466 |
|
if (!ui_init()) |
467 |
return 1; |
return 1; |
468 |
|
|
469 |
STATUS("Connection successful.\n"); |
#ifdef WITH_RDPSND |
470 |
|
if (g_rdpsnd) |
471 |
|
rdpsnd_init(); |
472 |
|
#endif |
473 |
|
/* rdpdr_init(); */ |
474 |
|
|
475 |
snprintf(title, sizeof(title), "rdesktop - %s", server); |
if (!rdp_connect(server, flags, domain, password, shell, directory)) |
476 |
if (ui_create_window(title)) |
return 1; |
477 |
|
|
478 |
|
/* By setting encryption to False here, we have an encrypted login |
479 |
|
packet but unencrypted transfer of other packets */ |
480 |
|
if (!packet_encryption) |
481 |
|
g_encryption = False; |
482 |
|
|
483 |
|
|
484 |
|
DEBUG(("Connection successful.\n")); |
485 |
|
memset(password, 0, sizeof(password)); |
486 |
|
|
487 |
|
if (ui_create_window()) |
488 |
{ |
{ |
489 |
rdp_main_loop(); |
rdp_retval = rdp_main_loop(); |
490 |
ui_destroy_window(); |
ui_destroy_window(); |
491 |
} |
} |
492 |
|
|
493 |
|
DEBUG(("Disconnecting...\n")); |
494 |
rdp_disconnect(); |
rdp_disconnect(); |
495 |
return 0; |
ui_deinit(); |
496 |
|
|
497 |
|
if (True == rdp_retval) |
498 |
|
return 0; |
499 |
|
else |
500 |
|
return 2; |
501 |
|
|
502 |
|
#endif |
503 |
|
|
504 |
} |
} |
505 |
|
|
506 |
/* Generate a 32-byte random for the secure transport code. */ |
#ifdef EGD_SOCKET |
507 |
void generate_random(uint8 *random) |
/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */ |
508 |
|
static BOOL |
509 |
|
generate_random_egd(uint8 * buf) |
510 |
{ |
{ |
511 |
struct stat st; |
struct sockaddr_un addr; |
512 |
uint32 *r = (uint32 *)random; |
BOOL ret = False; |
513 |
int fd; |
int fd; |
514 |
|
|
515 |
/* If we have a kernel random device, use it. */ |
fd = socket(AF_UNIX, SOCK_STREAM, 0); |
516 |
if ((fd = open("/dev/urandom", O_RDONLY)) != -1) |
if (fd == -1) |
517 |
|
return False; |
518 |
|
|
519 |
|
addr.sun_family = AF_UNIX; |
520 |
|
memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET)); |
521 |
|
if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) |
522 |
|
goto err; |
523 |
|
|
524 |
|
/* PRNGD and EGD use a simple communications protocol */ |
525 |
|
buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */ |
526 |
|
buf[1] = 32; /* Number of requested random bytes */ |
527 |
|
if (write(fd, buf, 2) != 2) |
528 |
|
goto err; |
529 |
|
|
530 |
|
if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */ |
531 |
|
goto err; |
532 |
|
|
533 |
|
if (read(fd, buf, 32) != 32) |
534 |
|
goto err; |
535 |
|
|
536 |
|
ret = True; |
537 |
|
|
538 |
|
err: |
539 |
|
close(fd); |
540 |
|
return ret; |
541 |
|
} |
542 |
|
#endif |
543 |
|
|
544 |
|
/* Generate a 32-byte random for the secure transport code. */ |
545 |
|
void |
546 |
|
generate_random(uint8 * random) |
547 |
|
{ |
548 |
|
struct stat st; |
549 |
|
struct tms tmsbuf; |
550 |
|
MD5_CTX md5; |
551 |
|
uint32 *r; |
552 |
|
int fd, n; |
553 |
|
|
554 |
|
/* If we have a kernel random device, try that first */ |
555 |
|
if (((fd = open("/dev/urandom", O_RDONLY)) != -1) |
556 |
|
|| ((fd = open("/dev/random", O_RDONLY)) != -1)) |
557 |
{ |
{ |
558 |
read(fd, random, 32); |
n = read(fd, random, 32); |
559 |
close(fd); |
close(fd); |
560 |
return; |
if (n == 32) |
561 |
|
return; |
562 |
} |
} |
563 |
|
|
564 |
|
#ifdef EGD_SOCKET |
565 |
|
/* As a second preference use an EGD */ |
566 |
|
if (generate_random_egd(random)) |
567 |
|
return; |
568 |
|
#endif |
569 |
|
|
570 |
/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
571 |
|
r = (uint32 *) random; |
572 |
r[0] = (getpid()) | (getppid() << 16); |
r[0] = (getpid()) | (getppid() << 16); |
573 |
r[1] = (getuid()) | (getgid() << 16); |
r[1] = (getuid()) | (getgid() << 16); |
574 |
r[2] = times(NULL); /* system uptime (clocks) */ |
r[2] = times(&tmsbuf); /* system uptime (clocks) */ |
575 |
gettimeofday((struct timeval *)&r[3], NULL); /* sec and usec */ |
gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */ |
576 |
stat("/tmp", &st); |
stat("/tmp", &st); |
577 |
r[5] = st.st_atime; |
r[5] = st.st_atime; |
578 |
r[6] = st.st_mtime; |
r[6] = st.st_mtime; |
579 |
r[7] = st.st_ctime; |
r[7] = st.st_ctime; |
580 |
|
|
581 |
|
/* Hash both halves with MD5 to obscure possible patterns */ |
582 |
|
MD5_Init(&md5); |
583 |
|
MD5_Update(&md5, random, 16); |
584 |
|
MD5_Final(random, &md5); |
585 |
|
MD5_Update(&md5, random + 16, 16); |
586 |
|
MD5_Final(random + 16, &md5); |
587 |
} |
} |
588 |
|
|
589 |
/* malloc; exit if out of memory */ |
/* malloc; exit if out of memory */ |
590 |
void *xmalloc(int size) |
void * |
591 |
|
xmalloc(int size) |
592 |
{ |
{ |
593 |
void *mem = malloc(size); |
void *mem = malloc(size); |
594 |
if (mem == NULL) |
if (mem == NULL) |
595 |
{ |
{ |
596 |
ERROR("xmalloc %d\n", size); |
error("xmalloc %d\n", size); |
597 |
exit(1); |
exit(1); |
598 |
} |
} |
599 |
return mem; |
return mem; |
600 |
} |
} |
601 |
|
|
602 |
/* realloc; exit if out of memory */ |
/* realloc; exit if out of memory */ |
603 |
void *xrealloc(void *oldmem, int size) |
void * |
604 |
|
xrealloc(void *oldmem, int size) |
605 |
{ |
{ |
606 |
void *mem = realloc(oldmem, size); |
void *mem = realloc(oldmem, size); |
607 |
if (mem == NULL) |
if (mem == NULL) |
608 |
{ |
{ |
609 |
ERROR("xrealloc %d\n", size); |
error("xrealloc %d\n", size); |
610 |
exit(1); |
exit(1); |
611 |
} |
} |
612 |
return mem; |
return mem; |
613 |
} |
} |
614 |
|
|
615 |
/* free */ |
/* free */ |
616 |
void xfree(void *mem) |
void |
617 |
|
xfree(void *mem) |
618 |
{ |
{ |
619 |
free(mem); |
free(mem); |
620 |
} |
} |
621 |
|
|
622 |
/* Produce a hex dump */ |
/* report an error */ |
623 |
void hexdump(unsigned char *p, unsigned int len) |
void |
624 |
|
error(char *format, ...) |
625 |
|
{ |
626 |
|
va_list ap; |
627 |
|
|
628 |
|
fprintf(stderr, "ERROR: "); |
629 |
|
|
630 |
|
va_start(ap, format); |
631 |
|
vfprintf(stderr, format, ap); |
632 |
|
va_end(ap); |
633 |
|
} |
634 |
|
|
635 |
|
/* report a warning */ |
636 |
|
void |
637 |
|
warning(char *format, ...) |
638 |
|
{ |
639 |
|
va_list ap; |
640 |
|
|
641 |
|
fprintf(stderr, "WARNING: "); |
642 |
|
|
643 |
|
va_start(ap, format); |
644 |
|
vfprintf(stderr, format, ap); |
645 |
|
va_end(ap); |
646 |
|
} |
647 |
|
|
648 |
|
/* report an unimplemented protocol feature */ |
649 |
|
void |
650 |
|
unimpl(char *format, ...) |
651 |
|
{ |
652 |
|
va_list ap; |
653 |
|
|
654 |
|
fprintf(stderr, "NOT IMPLEMENTED: "); |
655 |
|
|
656 |
|
va_start(ap, format); |
657 |
|
vfprintf(stderr, format, ap); |
658 |
|
va_end(ap); |
659 |
|
} |
660 |
|
|
661 |
|
/* produce a hex dump */ |
662 |
|
void |
663 |
|
hexdump(unsigned char *p, int len) |
664 |
{ |
{ |
665 |
unsigned char *line = p; |
unsigned char *line = p; |
666 |
unsigned int thisline, offset = 0; |
int i, thisline, offset = 0; |
|
int i; |
|
667 |
|
|
668 |
while (offset < len) |
while (offset < len) |
669 |
{ |
{ |
670 |
STATUS("%04x ", offset); |
printf("%04x ", offset); |
671 |
thisline = len - offset; |
thisline = len - offset; |
672 |
if (thisline > 16) |
if (thisline > 16) |
673 |
thisline = 16; |
thisline = 16; |
674 |
|
|
675 |
for (i = 0; i < thisline; i++) |
for (i = 0; i < thisline; i++) |
676 |
STATUS("%02x ", line[i]) |
printf("%02x ", line[i]); |
677 |
|
|
678 |
for (; i < 16; i++) |
for (; i < 16; i++) |
679 |
STATUS(" "); |
printf(" "); |
680 |
|
|
681 |
for (i = 0; i < thisline; i++) |
for (i = 0; i < thisline; i++) |
682 |
STATUS("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); |
printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); |
683 |
|
|
684 |
STATUS("\n"); |
printf("\n"); |
685 |
offset += thisline; |
offset += thisline; |
686 |
line += thisline; |
line += thisline; |
687 |
} |
} |
688 |
} |
} |
689 |
|
|
690 |
|
|
691 |
|
int |
692 |
|
load_licence(unsigned char **data) |
693 |
|
{ |
694 |
|
char *home, *path; |
695 |
|
struct stat st; |
696 |
|
int fd, length; |
697 |
|
|
698 |
|
home = getenv("HOME"); |
699 |
|
if (home == NULL) |
700 |
|
return -1; |
701 |
|
|
702 |
|
path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence.")); |
703 |
|
sprintf(path, "%s/.rdesktop/licence.%s", home, hostname); |
704 |
|
|
705 |
|
fd = open(path, O_RDONLY); |
706 |
|
if (fd == -1) |
707 |
|
return -1; |
708 |
|
|
709 |
|
if (fstat(fd, &st)) |
710 |
|
return -1; |
711 |
|
|
712 |
|
*data = (uint8 *) xmalloc(st.st_size); |
713 |
|
length = read(fd, *data, st.st_size); |
714 |
|
close(fd); |
715 |
|
xfree(path); |
716 |
|
return length; |
717 |
|
} |
718 |
|
|
719 |
|
void |
720 |
|
save_licence(unsigned char *data, int length) |
721 |
|
{ |
722 |
|
char *home, *path, *tmppath; |
723 |
|
int fd; |
724 |
|
|
725 |
|
home = getenv("HOME"); |
726 |
|
if (home == NULL) |
727 |
|
return; |
728 |
|
|
729 |
|
path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence.")); |
730 |
|
|
731 |
|
sprintf(path, "%s/.rdesktop", home); |
732 |
|
if ((mkdir(path, 0700) == -1) && errno != EEXIST) |
733 |
|
{ |
734 |
|
perror(path); |
735 |
|
return; |
736 |
|
} |
737 |
|
|
738 |
|
/* write licence to licence.hostname.new, then atomically rename to licence.hostname */ |
739 |
|
|
740 |
|
sprintf(path, "%s/.rdesktop/licence.%s", home, hostname); |
741 |
|
tmppath = (char *) xmalloc(strlen(path) + sizeof(".new")); |
742 |
|
strcpy(tmppath, path); |
743 |
|
strcat(tmppath, ".new"); |
744 |
|
|
745 |
|
fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
746 |
|
if (fd == -1) |
747 |
|
{ |
748 |
|
perror(tmppath); |
749 |
|
return; |
750 |
|
} |
751 |
|
|
752 |
|
if (write(fd, data, length) != length) |
753 |
|
{ |
754 |
|
perror(tmppath); |
755 |
|
unlink(tmppath); |
756 |
|
} |
757 |
|
else if (rename(tmppath, path) == -1) |
758 |
|
{ |
759 |
|
perror(path); |
760 |
|
unlink(tmppath); |
761 |
|
} |
762 |
|
|
763 |
|
close(fd); |
764 |
|
xfree(tmppath); |
765 |
|
xfree(path); |
766 |
|
} |