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