| 1 |
/* |
| 2 |
* Copyright (c) 1995 Danny Gasparovski. |
| 3 |
* |
| 4 |
* Please read the file COPYRIGHT for the |
| 5 |
* terms and conditions of the copyright. |
| 6 |
*/ |
| 7 |
|
| 8 |
#define WANT_SYS_IOCTL_H |
| 9 |
#include <slirp.h> |
| 10 |
|
| 11 |
u_int curtime, time_fasttimo, last_slowtimo, detach_time; |
| 12 |
u_int detach_wait = 600000; /* 10 minutes */ |
| 13 |
|
| 14 |
#if 0 |
| 15 |
int x_port = -1; |
| 16 |
int x_display = 0; |
| 17 |
int x_screen = 0; |
| 18 |
|
| 19 |
int |
| 20 |
show_x(buff, inso) |
| 21 |
char *buff; |
| 22 |
struct socket *inso; |
| 23 |
{ |
| 24 |
if (x_port < 0) { |
| 25 |
lprint("X Redir: X not being redirected.\r\n"); |
| 26 |
} else { |
| 27 |
lprint("X Redir: In sh/bash/zsh/etc. type: DISPLAY=%s:%d.%d; export DISPLAY\r\n", |
| 28 |
inet_ntoa(our_addr), x_port, x_screen); |
| 29 |
lprint("X Redir: In csh/tcsh/etc. type: setenv DISPLAY %s:%d.%d\r\n", |
| 30 |
inet_ntoa(our_addr), x_port, x_screen); |
| 31 |
if (x_display) |
| 32 |
lprint("X Redir: Redirecting to display %d\r\n", x_display); |
| 33 |
} |
| 34 |
|
| 35 |
return CFG_OK; |
| 36 |
} |
| 37 |
|
| 38 |
|
| 39 |
/* |
| 40 |
* XXX Allow more than one X redirection? |
| 41 |
*/ |
| 42 |
void |
| 43 |
redir_x(inaddr, start_port, display, screen) |
| 44 |
u_int32_t inaddr; |
| 45 |
int start_port; |
| 46 |
int display; |
| 47 |
int screen; |
| 48 |
{ |
| 49 |
int i; |
| 50 |
|
| 51 |
if (x_port >= 0) { |
| 52 |
lprint("X Redir: X already being redirected.\r\n"); |
| 53 |
show_x(0, 0); |
| 54 |
} else { |
| 55 |
for (i = 6001 + (start_port-1); i <= 6100; i++) { |
| 56 |
if (solisten(htons(i), inaddr, htons(6000 + display), 0)) { |
| 57 |
/* Success */ |
| 58 |
x_port = i - 6000; |
| 59 |
x_display = display; |
| 60 |
x_screen = screen; |
| 61 |
show_x(0, 0); |
| 62 |
return; |
| 63 |
} |
| 64 |
} |
| 65 |
lprint("X Redir: Error: Couldn't redirect a port for X. Weird.\r\n"); |
| 66 |
} |
| 67 |
} |
| 68 |
#endif |
| 69 |
|
| 70 |
#ifndef HAVE_INET_ATON |
| 71 |
int |
| 72 |
inet_aton(cp, ia) |
| 73 |
const char *cp; |
| 74 |
struct in_addr *ia; |
| 75 |
{ |
| 76 |
u_int32_t addr = inet_addr(cp); |
| 77 |
if (addr == 0xffffffff) |
| 78 |
return 0; |
| 79 |
ia->s_addr = addr; |
| 80 |
return 1; |
| 81 |
} |
| 82 |
#endif |
| 83 |
|
| 84 |
/* |
| 85 |
* Get our IP address and put it in our_addr |
| 86 |
*/ |
| 87 |
void |
| 88 |
getouraddr() |
| 89 |
{ |
| 90 |
char buff[256]; |
| 91 |
struct hostent *he; |
| 92 |
|
| 93 |
if (gethostname(buff,256) < 0) |
| 94 |
return; |
| 95 |
|
| 96 |
if ((he = gethostbyname(buff)) == NULL) |
| 97 |
return; |
| 98 |
|
| 99 |
our_addr = *(struct in_addr *)he->h_addr; |
| 100 |
} |
| 101 |
|
| 102 |
#if SIZEOF_CHAR_P == 8 |
| 103 |
|
| 104 |
struct quehead_32 { |
| 105 |
u_int32_t qh_link; |
| 106 |
u_int32_t qh_rlink; |
| 107 |
}; |
| 108 |
|
| 109 |
inline void |
| 110 |
insque_32(a, b) |
| 111 |
void *a; |
| 112 |
void *b; |
| 113 |
{ |
| 114 |
register struct quehead_32 *element = (struct quehead_32 *) a; |
| 115 |
register struct quehead_32 *head = (struct quehead_32 *) b; |
| 116 |
element->qh_link = head->qh_link; |
| 117 |
head->qh_link = (u_int32_t)element; |
| 118 |
element->qh_rlink = (u_int32_t)head; |
| 119 |
((struct quehead_32 *)(element->qh_link))->qh_rlink |
| 120 |
= (u_int32_t)element; |
| 121 |
} |
| 122 |
|
| 123 |
inline void |
| 124 |
remque_32(a) |
| 125 |
void *a; |
| 126 |
{ |
| 127 |
register struct quehead_32 *element = (struct quehead_32 *) a; |
| 128 |
((struct quehead_32 *)(element->qh_link))->qh_rlink = element->qh_rlink; |
| 129 |
((struct quehead_32 *)(element->qh_rlink))->qh_link = element->qh_link; |
| 130 |
element->qh_rlink = 0; |
| 131 |
} |
| 132 |
|
| 133 |
#endif /* SIZEOF_CHAR_P == 8 */ |
| 134 |
|
| 135 |
struct quehead { |
| 136 |
struct quehead *qh_link; |
| 137 |
struct quehead *qh_rlink; |
| 138 |
}; |
| 139 |
|
| 140 |
inline void |
| 141 |
insque(a, b) |
| 142 |
void *a, *b; |
| 143 |
{ |
| 144 |
register struct quehead *element = (struct quehead *) a; |
| 145 |
register struct quehead *head = (struct quehead *) b; |
| 146 |
element->qh_link = head->qh_link; |
| 147 |
head->qh_link = (struct quehead *)element; |
| 148 |
element->qh_rlink = (struct quehead *)head; |
| 149 |
((struct quehead *)(element->qh_link))->qh_rlink |
| 150 |
= (struct quehead *)element; |
| 151 |
} |
| 152 |
|
| 153 |
inline void |
| 154 |
remque(a) |
| 155 |
void *a; |
| 156 |
{ |
| 157 |
register struct quehead *element = (struct quehead *) a; |
| 158 |
((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink; |
| 159 |
((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link; |
| 160 |
element->qh_rlink = NULL; |
| 161 |
/* element->qh_link = NULL; TCP FIN1 crashes if you do this. Why ? */ |
| 162 |
} |
| 163 |
|
| 164 |
/* #endif */ |
| 165 |
|
| 166 |
|
| 167 |
int |
| 168 |
add_exec(ex_ptr, do_pty, exec, addr, port) |
| 169 |
struct ex_list **ex_ptr; |
| 170 |
int do_pty; |
| 171 |
char *exec; |
| 172 |
int addr; |
| 173 |
int port; |
| 174 |
{ |
| 175 |
struct ex_list *tmp_ptr; |
| 176 |
|
| 177 |
/* First, check if the port is "bound" */ |
| 178 |
for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) { |
| 179 |
if (port == tmp_ptr->ex_fport && addr == tmp_ptr->ex_addr) |
| 180 |
return -1; |
| 181 |
} |
| 182 |
|
| 183 |
tmp_ptr = *ex_ptr; |
| 184 |
*ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list)); |
| 185 |
(*ex_ptr)->ex_fport = port; |
| 186 |
(*ex_ptr)->ex_addr = addr; |
| 187 |
(*ex_ptr)->ex_pty = do_pty; |
| 188 |
(*ex_ptr)->ex_exec = strdup(exec); |
| 189 |
(*ex_ptr)->ex_next = tmp_ptr; |
| 190 |
return 0; |
| 191 |
} |
| 192 |
|
| 193 |
#ifndef HAVE_STRERROR |
| 194 |
|
| 195 |
/* |
| 196 |
* For systems with no strerror |
| 197 |
*/ |
| 198 |
|
| 199 |
extern int sys_nerr; |
| 200 |
extern char *sys_errlist[]; |
| 201 |
|
| 202 |
char * |
| 203 |
strerror(error) |
| 204 |
int error; |
| 205 |
{ |
| 206 |
if (error < sys_nerr) |
| 207 |
return sys_errlist[error]; |
| 208 |
else |
| 209 |
return "Unknown error."; |
| 210 |
} |
| 211 |
|
| 212 |
#endif |
| 213 |
|
| 214 |
|
| 215 |
#ifdef _WIN32 |
| 216 |
|
| 217 |
int |
| 218 |
fork_exec(so, ex, do_pty) |
| 219 |
struct socket *so; |
| 220 |
char *ex; |
| 221 |
int do_pty; |
| 222 |
{ |
| 223 |
/* not implemented */ |
| 224 |
return 0; |
| 225 |
} |
| 226 |
|
| 227 |
#else |
| 228 |
|
| 229 |
int |
| 230 |
slirp_openpty(amaster, aslave) |
| 231 |
int *amaster, *aslave; |
| 232 |
{ |
| 233 |
register int master, slave; |
| 234 |
|
| 235 |
#ifdef HAVE_GRANTPT |
| 236 |
char *ptr; |
| 237 |
|
| 238 |
if ((master = open("/dev/ptmx", O_RDWR)) < 0 || |
| 239 |
grantpt(master) < 0 || |
| 240 |
unlockpt(master) < 0 || |
| 241 |
(ptr = ptsname(master)) == NULL) { |
| 242 |
close(master); |
| 243 |
return -1; |
| 244 |
} |
| 245 |
|
| 246 |
if ((slave = open(ptr, O_RDWR)) < 0 || |
| 247 |
ioctl(slave, I_PUSH, "ptem") < 0 || |
| 248 |
ioctl(slave, I_PUSH, "ldterm") < 0 || |
| 249 |
ioctl(slave, I_PUSH, "ttcompat") < 0) { |
| 250 |
close(master); |
| 251 |
close(slave); |
| 252 |
return -1; |
| 253 |
} |
| 254 |
|
| 255 |
*amaster = master; |
| 256 |
*aslave = slave; |
| 257 |
return 0; |
| 258 |
|
| 259 |
#else |
| 260 |
|
| 261 |
static char line[] = "/dev/ptyXX"; |
| 262 |
register const char *cp1, *cp2; |
| 263 |
|
| 264 |
for (cp1 = "pqrsPQRS"; *cp1; cp1++) { |
| 265 |
line[8] = *cp1; |
| 266 |
for (cp2 = "0123456789abcdefghijklmnopqrstuv"; *cp2; cp2++) { |
| 267 |
line[9] = *cp2; |
| 268 |
if ((master = open(line, O_RDWR, 0)) == -1) { |
| 269 |
if (errno == ENOENT) |
| 270 |
return (-1); /* out of ptys */ |
| 271 |
} else { |
| 272 |
line[5] = 't'; |
| 273 |
/* These will fail */ |
| 274 |
(void) chown(line, getuid(), 0); |
| 275 |
(void) chmod(line, S_IRUSR|S_IWUSR|S_IWGRP); |
| 276 |
#ifdef HAVE_REVOKE |
| 277 |
(void) revoke(line); |
| 278 |
#endif |
| 279 |
if ((slave = open(line, O_RDWR, 0)) != -1) { |
| 280 |
*amaster = master; |
| 281 |
*aslave = slave; |
| 282 |
return 0; |
| 283 |
} |
| 284 |
(void) close(master); |
| 285 |
line[5] = 'p'; |
| 286 |
} |
| 287 |
} |
| 288 |
} |
| 289 |
errno = ENOENT; /* out of ptys */ |
| 290 |
return (-1); |
| 291 |
#endif |
| 292 |
} |
| 293 |
|
| 294 |
/* |
| 295 |
* XXX This is ugly |
| 296 |
* We create and bind a socket, then fork off to another |
| 297 |
* process, which connects to this socket, after which we |
| 298 |
* exec the wanted program. If something (strange) happens, |
| 299 |
* the accept() call could block us forever. |
| 300 |
* |
| 301 |
* do_pty = 0 Fork/exec inetd style |
| 302 |
* do_pty = 1 Fork/exec using slirp.telnetd |
| 303 |
* do_ptr = 2 Fork/exec using pty |
| 304 |
*/ |
| 305 |
int |
| 306 |
fork_exec(so, ex, do_pty) |
| 307 |
struct socket *so; |
| 308 |
char *ex; |
| 309 |
int do_pty; |
| 310 |
{ |
| 311 |
int s; |
| 312 |
struct sockaddr_in addr; |
| 313 |
socklen_t addrlen = sizeof(addr); |
| 314 |
int opt; |
| 315 |
int master; |
| 316 |
char *argv[256]; |
| 317 |
#if 0 |
| 318 |
char buff[256]; |
| 319 |
#endif |
| 320 |
/* don't want to clobber the original */ |
| 321 |
char *bptr; |
| 322 |
char *curarg; |
| 323 |
int c, i, ret; |
| 324 |
|
| 325 |
DEBUG_CALL("fork_exec"); |
| 326 |
DEBUG_ARG("so = %lx", (long)so); |
| 327 |
DEBUG_ARG("ex = %lx", (long)ex); |
| 328 |
DEBUG_ARG("do_pty = %lx", (long)do_pty); |
| 329 |
|
| 330 |
if (do_pty == 2) { |
| 331 |
if (slirp_openpty(&master, &s) == -1) { |
| 332 |
lprint("Error: openpty failed: %s\n", strerror(errno)); |
| 333 |
return 0; |
| 334 |
} |
| 335 |
} else { |
| 336 |
addr.sin_family = AF_INET; |
| 337 |
addr.sin_port = 0; |
| 338 |
addr.sin_addr.s_addr = INADDR_ANY; |
| 339 |
|
| 340 |
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0 || |
| 341 |
bind(s, (struct sockaddr *)&addr, addrlen) < 0 || |
| 342 |
listen(s, 1) < 0) { |
| 343 |
lprint("Error: inet socket: %s\n", strerror(errno)); |
| 344 |
closesocket(s); |
| 345 |
|
| 346 |
return 0; |
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
switch(fork()) { |
| 351 |
case -1: |
| 352 |
lprint("Error: fork failed: %s\n", strerror(errno)); |
| 353 |
close(s); |
| 354 |
if (do_pty == 2) |
| 355 |
close(master); |
| 356 |
return 0; |
| 357 |
|
| 358 |
case 0: |
| 359 |
/* Set the DISPLAY */ |
| 360 |
if (do_pty == 2) { |
| 361 |
(void) close(master); |
| 362 |
#ifdef TIOCSCTTY /* XXXXX */ |
| 363 |
(void) setsid(); |
| 364 |
ioctl(s, TIOCSCTTY, (char *)NULL); |
| 365 |
#endif |
| 366 |
} else { |
| 367 |
getsockname(s, (struct sockaddr *)&addr, &addrlen); |
| 368 |
close(s); |
| 369 |
/* |
| 370 |
* Connect to the socket |
| 371 |
* XXX If any of these fail, we're in trouble! |
| 372 |
*/ |
| 373 |
s = socket(AF_INET, SOCK_STREAM, 0); |
| 374 |
addr.sin_addr = loopback_addr; |
| 375 |
do { |
| 376 |
ret = connect(s, (struct sockaddr *)&addr, addrlen); |
| 377 |
} while (ret < 0 && errno == EINTR); |
| 378 |
} |
| 379 |
|
| 380 |
#if 0 |
| 381 |
if (x_port >= 0) { |
| 382 |
#ifdef HAVE_SETENV |
| 383 |
sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
| 384 |
setenv("DISPLAY", buff, 1); |
| 385 |
#else |
| 386 |
sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
| 387 |
putenv(buff); |
| 388 |
#endif |
| 389 |
} |
| 390 |
#endif |
| 391 |
dup2(s, 0); |
| 392 |
dup2(s, 1); |
| 393 |
dup2(s, 2); |
| 394 |
for (s = 3; s <= 255; s++) |
| 395 |
close(s); |
| 396 |
|
| 397 |
i = 0; |
| 398 |
bptr = strdup(ex); /* No need to free() this */ |
| 399 |
if (do_pty == 1) { |
| 400 |
/* Setup "slirp.telnetd -x" */ |
| 401 |
argv[i++] = "slirp.telnetd"; |
| 402 |
argv[i++] = "-x"; |
| 403 |
argv[i++] = bptr; |
| 404 |
} else |
| 405 |
do { |
| 406 |
/* Change the string into argv[] */ |
| 407 |
curarg = bptr; |
| 408 |
while (*bptr != ' ' && *bptr != (char)0) |
| 409 |
bptr++; |
| 410 |
c = *bptr; |
| 411 |
*bptr++ = (char)0; |
| 412 |
argv[i++] = strdup(curarg); |
| 413 |
} while (c); |
| 414 |
|
| 415 |
argv[i] = 0; |
| 416 |
execvp(argv[0], argv); |
| 417 |
|
| 418 |
/* Ooops, failed, let's tell the user why */ |
| 419 |
{ |
| 420 |
char buff[256]; |
| 421 |
|
| 422 |
sprintf(buff, "Error: execvp of %s failed: %s\n", |
| 423 |
argv[0], strerror(errno)); |
| 424 |
write(2, buff, strlen(buff)+1); |
| 425 |
} |
| 426 |
close(0); close(1); close(2); /* XXX */ |
| 427 |
exit(1); |
| 428 |
|
| 429 |
default: |
| 430 |
if (do_pty == 2) { |
| 431 |
close(s); |
| 432 |
so->s = master; |
| 433 |
} else { |
| 434 |
/* |
| 435 |
* XXX this could block us... |
| 436 |
* XXX Should set a timer here, and if accept() doesn't |
| 437 |
* return after X seconds, declare it a failure |
| 438 |
* The only reason this will block forever is if socket() |
| 439 |
* of connect() fail in the child process |
| 440 |
*/ |
| 441 |
do { |
| 442 |
so->s = accept(s, (struct sockaddr *)&addr, &addrlen); |
| 443 |
} while (so->s < 0 && errno == EINTR); |
| 444 |
closesocket(s); |
| 445 |
opt = 1; |
| 446 |
setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)); |
| 447 |
opt = 1; |
| 448 |
setsockopt(so->s,SOL_SOCKET,SO_OOBINLINE,(char *)&opt,sizeof(int)); |
| 449 |
} |
| 450 |
fd_nonblock(so->s); |
| 451 |
|
| 452 |
/* Append the telnet options now */ |
| 453 |
if (so->so_m != 0 && do_pty == 1) { |
| 454 |
sbappend(so, so->so_m); |
| 455 |
so->so_m = 0; |
| 456 |
} |
| 457 |
|
| 458 |
return 1; |
| 459 |
} |
| 460 |
} |
| 461 |
#endif |
| 462 |
|
| 463 |
#ifndef HAVE_STRDUP |
| 464 |
char * |
| 465 |
strdup(str) |
| 466 |
const char *str; |
| 467 |
{ |
| 468 |
char *bptr; |
| 469 |
|
| 470 |
bptr = (char *)malloc(strlen(str)+1); |
| 471 |
strcpy(bptr, str); |
| 472 |
|
| 473 |
return bptr; |
| 474 |
} |
| 475 |
#endif |
| 476 |
|
| 477 |
#if 0 |
| 478 |
void |
| 479 |
snooze_hup(num) |
| 480 |
int num; |
| 481 |
{ |
| 482 |
int s, ret; |
| 483 |
#ifndef NO_UNIX_SOCKETS |
| 484 |
struct sockaddr_un sock_un; |
| 485 |
#endif |
| 486 |
struct sockaddr_in sock_in; |
| 487 |
char buff[256]; |
| 488 |
|
| 489 |
ret = -1; |
| 490 |
if (slirp_socket_passwd) { |
| 491 |
s = socket(AF_INET, SOCK_STREAM, 0); |
| 492 |
if (s < 0) |
| 493 |
slirp_exit(1); |
| 494 |
sock_in.sin_family = AF_INET; |
| 495 |
sock_in.sin_addr.s_addr = slirp_socket_addr; |
| 496 |
sock_in.sin_port = htons(slirp_socket_port); |
| 497 |
if (connect(s, (struct sockaddr *)&sock_in, sizeof(sock_in)) != 0) |
| 498 |
slirp_exit(1); /* just exit...*/ |
| 499 |
sprintf(buff, "kill %s:%d", slirp_socket_passwd, slirp_socket_unit); |
| 500 |
write(s, buff, strlen(buff)+1); |
| 501 |
} |
| 502 |
#ifndef NO_UNIX_SOCKETS |
| 503 |
else { |
| 504 |
s = socket(AF_UNIX, SOCK_STREAM, 0); |
| 505 |
if (s < 0) |
| 506 |
slirp_exit(1); |
| 507 |
sock_un.sun_family = AF_UNIX; |
| 508 |
strcpy(sock_un.sun_path, socket_path); |
| 509 |
if (connect(s, (struct sockaddr *)&sock_un, |
| 510 |
sizeof(sock_un.sun_family) + sizeof(sock_un.sun_path)) != 0) |
| 511 |
slirp_exit(1); |
| 512 |
sprintf(buff, "kill none:%d", slirp_socket_unit); |
| 513 |
write(s, buff, strlen(buff)+1); |
| 514 |
} |
| 515 |
#endif |
| 516 |
slirp_exit(0); |
| 517 |
} |
| 518 |
|
| 519 |
|
| 520 |
void |
| 521 |
snooze() |
| 522 |
{ |
| 523 |
sigset_t s; |
| 524 |
int i; |
| 525 |
|
| 526 |
/* Don't need our data anymore */ |
| 527 |
/* XXX This makes SunOS barf */ |
| 528 |
/* brk(0); */ |
| 529 |
|
| 530 |
/* Close all fd's */ |
| 531 |
for (i = 255; i >= 0; i--) |
| 532 |
close(i); |
| 533 |
|
| 534 |
signal(SIGQUIT, slirp_exit); |
| 535 |
signal(SIGHUP, snooze_hup); |
| 536 |
sigemptyset(&s); |
| 537 |
|
| 538 |
/* Wait for any signal */ |
| 539 |
sigsuspend(&s); |
| 540 |
|
| 541 |
/* Just in case ... */ |
| 542 |
exit(255); |
| 543 |
} |
| 544 |
|
| 545 |
void |
| 546 |
relay(s) |
| 547 |
int s; |
| 548 |
{ |
| 549 |
char buf[8192]; |
| 550 |
int n; |
| 551 |
fd_set readfds; |
| 552 |
struct ttys *ttyp; |
| 553 |
|
| 554 |
/* Don't need our data anymore */ |
| 555 |
/* XXX This makes SunOS barf */ |
| 556 |
/* brk(0); */ |
| 557 |
|
| 558 |
signal(SIGQUIT, slirp_exit); |
| 559 |
signal(SIGHUP, slirp_exit); |
| 560 |
signal(SIGINT, slirp_exit); |
| 561 |
signal(SIGTERM, slirp_exit); |
| 562 |
|
| 563 |
/* Fudge to get term_raw and term_restore to work */ |
| 564 |
if (NULL == (ttyp = tty_attach (0, slirp_tty))) { |
| 565 |
lprint ("Error: tty_attach failed in misc.c:relay()\r\n"); |
| 566 |
slirp_exit (1); |
| 567 |
} |
| 568 |
ttyp->fd = 0; |
| 569 |
ttyp->flags |= TTY_CTTY; |
| 570 |
term_raw(ttyp); |
| 571 |
|
| 572 |
while (1) { |
| 573 |
FD_ZERO(&readfds); |
| 574 |
|
| 575 |
FD_SET(0, &readfds); |
| 576 |
FD_SET(s, &readfds); |
| 577 |
|
| 578 |
n = select(s+1, &readfds, (fd_set *)0, (fd_set *)0, (struct timeval *)0); |
| 579 |
|
| 580 |
if (n <= 0) |
| 581 |
slirp_exit(0); |
| 582 |
|
| 583 |
if (FD_ISSET(0, &readfds)) { |
| 584 |
n = read(0, buf, 8192); |
| 585 |
if (n <= 0) |
| 586 |
slirp_exit(0); |
| 587 |
n = writen(s, buf, n); |
| 588 |
if (n <= 0) |
| 589 |
slirp_exit(0); |
| 590 |
} |
| 591 |
|
| 592 |
if (FD_ISSET(s, &readfds)) { |
| 593 |
n = read(s, buf, 8192); |
| 594 |
if (n <= 0) |
| 595 |
slirp_exit(0); |
| 596 |
n = writen(0, buf, n); |
| 597 |
if (n <= 0) |
| 598 |
slirp_exit(0); |
| 599 |
} |
| 600 |
} |
| 601 |
|
| 602 |
/* Just in case.... */ |
| 603 |
exit(1); |
| 604 |
} |
| 605 |
#endif |
| 606 |
|
| 607 |
int (*lprint_print) _P((void *, const char *, va_list)); |
| 608 |
char *lprint_ptr, *lprint_ptr2, **lprint_arg; |
| 609 |
|
| 610 |
void |
| 611 |
#ifdef __STDC__ |
| 612 |
lprint(const char *format, ...) |
| 613 |
#else |
| 614 |
lprint(va_alist) va_dcl |
| 615 |
#endif |
| 616 |
{ |
| 617 |
va_list args; |
| 618 |
|
| 619 |
#ifdef __STDC__ |
| 620 |
va_start(args, format); |
| 621 |
#else |
| 622 |
char *format; |
| 623 |
va_start(args); |
| 624 |
format = va_arg(args, char *); |
| 625 |
#endif |
| 626 |
#if 0 |
| 627 |
/* If we're printing to an sbuf, make sure there's enough room */ |
| 628 |
/* XXX +100? */ |
| 629 |
if (lprint_sb) { |
| 630 |
if ((lprint_ptr - lprint_sb->sb_wptr) >= |
| 631 |
(lprint_sb->sb_datalen - (strlen(format) + 100))) { |
| 632 |
int deltaw = lprint_sb->sb_wptr - lprint_sb->sb_data; |
| 633 |
int deltar = lprint_sb->sb_rptr - lprint_sb->sb_data; |
| 634 |
int deltap = lprint_ptr - lprint_sb->sb_data; |
| 635 |
|
| 636 |
lprint_sb->sb_data = (char *)realloc(lprint_sb->sb_data, |
| 637 |
lprint_sb->sb_datalen + TCP_SNDSPACE); |
| 638 |
|
| 639 |
/* Adjust all values */ |
| 640 |
lprint_sb->sb_wptr = lprint_sb->sb_data + deltaw; |
| 641 |
lprint_sb->sb_rptr = lprint_sb->sb_data + deltar; |
| 642 |
lprint_ptr = lprint_sb->sb_data + deltap; |
| 643 |
|
| 644 |
lprint_sb->sb_datalen += TCP_SNDSPACE; |
| 645 |
} |
| 646 |
} |
| 647 |
#endif |
| 648 |
if (lprint_print) |
| 649 |
lprint_ptr += (*lprint_print)(*lprint_arg, format, args); |
| 650 |
|
| 651 |
/* Check if they want output to be logged to file as well */ |
| 652 |
if (lfd) { |
| 653 |
/* |
| 654 |
* Remove \r's |
| 655 |
* otherwise you'll get ^M all over the file |
| 656 |
*/ |
| 657 |
int len = strlen(format); |
| 658 |
char *bptr1, *bptr2; |
| 659 |
|
| 660 |
bptr1 = bptr2 = strdup(format); |
| 661 |
|
| 662 |
while (len--) { |
| 663 |
if (*bptr1 == '\r') |
| 664 |
memcpy(bptr1, bptr1+1, len+1); |
| 665 |
else |
| 666 |
bptr1++; |
| 667 |
} |
| 668 |
vfprintf(lfd, bptr2, args); |
| 669 |
free(bptr2); |
| 670 |
} |
| 671 |
va_end(args); |
| 672 |
} |
| 673 |
|
| 674 |
void |
| 675 |
add_emu(buff) |
| 676 |
char *buff; |
| 677 |
{ |
| 678 |
u_int lport, fport; |
| 679 |
u_int8_t tos = 0, emu = 0; |
| 680 |
char buff1[256], buff2[256], buff4[128]; |
| 681 |
char *buff3 = buff4; |
| 682 |
struct emu_t *emup; |
| 683 |
struct socket *so; |
| 684 |
|
| 685 |
if (sscanf(buff, "%256s %256s", buff2, buff1) != 2) { |
| 686 |
lprint("Error: Bad arguments\r\n"); |
| 687 |
return; |
| 688 |
} |
| 689 |
|
| 690 |
if (sscanf(buff1, "%d:%d", &lport, &fport) != 2) { |
| 691 |
lport = 0; |
| 692 |
if (sscanf(buff1, "%d", &fport) != 1) { |
| 693 |
lprint("Error: Bad first argument\r\n"); |
| 694 |
return; |
| 695 |
} |
| 696 |
} |
| 697 |
|
| 698 |
if (sscanf(buff2, "%128[^:]:%128s", buff1, buff3) != 2) { |
| 699 |
buff3 = 0; |
| 700 |
if (sscanf(buff2, "%256s", buff1) != 1) { |
| 701 |
lprint("Error: Bad second argument\r\n"); |
| 702 |
return; |
| 703 |
} |
| 704 |
} |
| 705 |
|
| 706 |
if (buff3) { |
| 707 |
if (strcmp(buff3, "lowdelay") == 0) |
| 708 |
tos = IPTOS_LOWDELAY; |
| 709 |
else if (strcmp(buff3, "throughput") == 0) |
| 710 |
tos = IPTOS_THROUGHPUT; |
| 711 |
else { |
| 712 |
lprint("Error: Expecting \"lowdelay\"/\"throughput\"\r\n"); |
| 713 |
return; |
| 714 |
} |
| 715 |
} |
| 716 |
|
| 717 |
if (strcmp(buff1, "ftp") == 0) |
| 718 |
emu = EMU_FTP; |
| 719 |
else if (strcmp(buff1, "irc") == 0) |
| 720 |
emu = EMU_IRC; |
| 721 |
else if (strcmp(buff1, "none") == 0) |
| 722 |
emu = EMU_NONE; /* ie: no emulation */ |
| 723 |
else { |
| 724 |
lprint("Error: Unknown service\r\n"); |
| 725 |
return; |
| 726 |
} |
| 727 |
|
| 728 |
/* First, check that it isn't already emulated */ |
| 729 |
for (emup = tcpemu; emup; emup = emup->next) { |
| 730 |
if (emup->lport == lport && emup->fport == fport) { |
| 731 |
lprint("Error: port already emulated\r\n"); |
| 732 |
return; |
| 733 |
} |
| 734 |
} |
| 735 |
|
| 736 |
/* link it */ |
| 737 |
emup = (struct emu_t *)malloc(sizeof (struct emu_t)); |
| 738 |
emup->lport = (u_int16_t)lport; |
| 739 |
emup->fport = (u_int16_t)fport; |
| 740 |
emup->tos = tos; |
| 741 |
emup->emu = emu; |
| 742 |
emup->next = tcpemu; |
| 743 |
tcpemu = emup; |
| 744 |
|
| 745 |
/* And finally, mark all current sessions, if any, as being emulated */ |
| 746 |
for (so = tcb.so_next; so != &tcb; so = so->so_next) { |
| 747 |
if ((lport && lport == ntohs(so->so_lport)) || |
| 748 |
(fport && fport == ntohs(so->so_fport))) { |
| 749 |
if (emu) |
| 750 |
so->so_emu = emu; |
| 751 |
if (tos) |
| 752 |
so->so_iptos = tos; |
| 753 |
} |
| 754 |
} |
| 755 |
|
| 756 |
lprint("Adding emulation for %s to port %d/%d\r\n", buff1, emup->lport, emup->fport); |
| 757 |
} |
| 758 |
|
| 759 |
#ifdef BAD_SPRINTF |
| 760 |
|
| 761 |
#undef vsprintf |
| 762 |
#undef sprintf |
| 763 |
|
| 764 |
/* |
| 765 |
* Some BSD-derived systems have a sprintf which returns char * |
| 766 |
*/ |
| 767 |
|
| 768 |
int |
| 769 |
vsprintf_len(string, format, args) |
| 770 |
char *string; |
| 771 |
const char *format; |
| 772 |
va_list args; |
| 773 |
{ |
| 774 |
vsprintf(string, format, args); |
| 775 |
return strlen(string); |
| 776 |
} |
| 777 |
|
| 778 |
int |
| 779 |
#ifdef __STDC__ |
| 780 |
sprintf_len(char *string, const char *format, ...) |
| 781 |
#else |
| 782 |
sprintf_len(va_alist) va_dcl |
| 783 |
#endif |
| 784 |
{ |
| 785 |
va_list args; |
| 786 |
#ifdef __STDC__ |
| 787 |
va_start(args, format); |
| 788 |
#else |
| 789 |
char *string; |
| 790 |
char *format; |
| 791 |
va_start(args); |
| 792 |
string = va_arg(args, char *); |
| 793 |
format = va_arg(args, char *); |
| 794 |
#endif |
| 795 |
vsprintf(string, format, args); |
| 796 |
return strlen(string); |
| 797 |
} |
| 798 |
|
| 799 |
#endif |
| 800 |
|
| 801 |
void |
| 802 |
u_sleep(usec) |
| 803 |
int usec; |
| 804 |
{ |
| 805 |
struct timeval t; |
| 806 |
fd_set fdset; |
| 807 |
|
| 808 |
FD_ZERO(&fdset); |
| 809 |
|
| 810 |
t.tv_sec = 0; |
| 811 |
t.tv_usec = usec * 1000; |
| 812 |
|
| 813 |
select(0, &fdset, &fdset, &fdset, &t); |
| 814 |
} |
| 815 |
|
| 816 |
/* |
| 817 |
* Set fd blocking and non-blocking |
| 818 |
*/ |
| 819 |
|
| 820 |
void |
| 821 |
fd_nonblock(fd) |
| 822 |
int fd; |
| 823 |
{ |
| 824 |
#ifdef FIONBIO |
| 825 |
int opt = 1; |
| 826 |
|
| 827 |
ioctlsocket(fd, FIONBIO, &opt); |
| 828 |
#else |
| 829 |
int opt; |
| 830 |
|
| 831 |
opt = fcntl(fd, F_GETFL, 0); |
| 832 |
opt |= O_NONBLOCK; |
| 833 |
fcntl(fd, F_SETFL, opt); |
| 834 |
#endif |
| 835 |
} |
| 836 |
|
| 837 |
void |
| 838 |
fd_block(fd) |
| 839 |
int fd; |
| 840 |
{ |
| 841 |
#ifdef FIONBIO |
| 842 |
int opt = 0; |
| 843 |
|
| 844 |
ioctlsocket(fd, FIONBIO, &opt); |
| 845 |
#else |
| 846 |
int opt; |
| 847 |
|
| 848 |
opt = fcntl(fd, F_GETFL, 0); |
| 849 |
opt &= ~O_NONBLOCK; |
| 850 |
fcntl(fd, F_SETFL, opt); |
| 851 |
#endif |
| 852 |
} |
| 853 |
|
| 854 |
|
| 855 |
#if 0 |
| 856 |
/* |
| 857 |
* invoke RSH |
| 858 |
*/ |
| 859 |
int |
| 860 |
rsh_exec(so,ns, user, host, args) |
| 861 |
struct socket *so; |
| 862 |
struct socket *ns; |
| 863 |
char *user; |
| 864 |
char *host; |
| 865 |
char *args; |
| 866 |
{ |
| 867 |
int fd[2]; |
| 868 |
int fd0[2]; |
| 869 |
int s; |
| 870 |
char buff[256]; |
| 871 |
|
| 872 |
DEBUG_CALL("rsh_exec"); |
| 873 |
DEBUG_ARG("so = %lx", (long)so); |
| 874 |
|
| 875 |
if (pipe(fd)<0) { |
| 876 |
lprint("Error: pipe failed: %s\n", strerror(errno)); |
| 877 |
return 0; |
| 878 |
} |
| 879 |
/* #ifdef HAVE_SOCKETPAIR */ |
| 880 |
#if 1 |
| 881 |
if (socketpair(PF_UNIX,SOCK_STREAM,0, fd0) == -1) { |
| 882 |
close(fd[0]); |
| 883 |
close(fd[1]); |
| 884 |
lprint("Error: openpty failed: %s\n", strerror(errno)); |
| 885 |
return 0; |
| 886 |
} |
| 887 |
#else |
| 888 |
if (slirp_openpty(&fd0[0], &fd0[1]) == -1) { |
| 889 |
close(fd[0]); |
| 890 |
close(fd[1]); |
| 891 |
lprint("Error: openpty failed: %s\n", strerror(errno)); |
| 892 |
return 0; |
| 893 |
} |
| 894 |
#endif |
| 895 |
|
| 896 |
switch(fork()) { |
| 897 |
case -1: |
| 898 |
lprint("Error: fork failed: %s\n", strerror(errno)); |
| 899 |
close(fd[0]); |
| 900 |
close(fd[1]); |
| 901 |
close(fd0[0]); |
| 902 |
close(fd0[1]); |
| 903 |
return 0; |
| 904 |
|
| 905 |
case 0: |
| 906 |
close(fd[0]); |
| 907 |
close(fd0[0]); |
| 908 |
|
| 909 |
/* Set the DISPLAY */ |
| 910 |
if (x_port >= 0) { |
| 911 |
#ifdef HAVE_SETENV |
| 912 |
sprintf(buff, "%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
| 913 |
setenv("DISPLAY", buff, 1); |
| 914 |
#else |
| 915 |
sprintf(buff, "DISPLAY=%s:%d.%d", inet_ntoa(our_addr), x_port, x_screen); |
| 916 |
putenv(buff); |
| 917 |
#endif |
| 918 |
} |
| 919 |
|
| 920 |
dup2(fd0[1], 0); |
| 921 |
dup2(fd0[1], 1); |
| 922 |
dup2(fd[1], 2); |
| 923 |
for (s = 3; s <= 255; s++) |
| 924 |
close(s); |
| 925 |
|
| 926 |
execlp("rsh","rsh","-l", user, host, args, NULL); |
| 927 |
|
| 928 |
/* Ooops, failed, let's tell the user why */ |
| 929 |
|
| 930 |
sprintf(buff, "Error: execlp of %s failed: %s\n", |
| 931 |
"rsh", strerror(errno)); |
| 932 |
write(2, buff, strlen(buff)+1); |
| 933 |
close(0); close(1); close(2); /* XXX */ |
| 934 |
exit(1); |
| 935 |
|
| 936 |
default: |
| 937 |
close(fd[1]); |
| 938 |
close(fd0[1]); |
| 939 |
ns->s=fd[0]; |
| 940 |
so->s=fd0[0]; |
| 941 |
|
| 942 |
return 1; |
| 943 |
} |
| 944 |
} |
| 945 |
#endif |
