| 1 |
#include <unistd.h> |
| 2 |
#include <sys/types.h> |
| 3 |
#include <time.h> |
| 4 |
#include "rdesktop.h" |
| 5 |
|
| 6 |
#define IRP_MJ_CREATE 0x00 |
| 7 |
#define IRP_MJ_CLOSE 0x02 |
| 8 |
#define IRP_MJ_READ 0x03 |
| 9 |
#define IRP_MJ_WRITE 0x04 |
| 10 |
#define IRP_MJ_DEVICE_CONTROL 0x0e |
| 11 |
|
| 12 |
#define IRP_MJ_CREATE 0x00 |
| 13 |
#define IRP_MJ_CLOSE 0x02 |
| 14 |
#define IRP_MJ_READ 0x03 |
| 15 |
#define IRP_MJ_WRITE 0x04 |
| 16 |
#define IRP_MJ_QUERY_INFORMATION 0x05 |
| 17 |
#define IRP_MJ_SET_INFORMATION 0x06 |
| 18 |
#define IRP_MJ_QUERY_VOLUME_INFORMATION 0x0a |
| 19 |
#define IRP_MJ_DIRECTORY_CONTROL 0x0c |
| 20 |
#define IRP_MJ_DEVICE_CONTROL 0x0e |
| 21 |
|
| 22 |
#define IRP_MN_QUERY_DIRECTORY 0x01 |
| 23 |
#define IRP_MN_NOTIFY_CHANGE_DIRECTORY 0x02 |
| 24 |
|
| 25 |
#define MAX_ASYNC_IO_REQUESTS 10 |
| 26 |
|
| 27 |
extern char hostname[16]; |
| 28 |
extern DEVICE_FNS serial_fns; |
| 29 |
extern DEVICE_FNS printer_fns; |
| 30 |
extern DEVICE_FNS parallel_fns; |
| 31 |
extern DEVICE_FNS disk_fns; |
| 32 |
|
| 33 |
|
| 34 |
static VCHANNEL *rdpdr_channel; |
| 35 |
|
| 36 |
/* If select() times out, the request for the device with handle g_min_timeout_fd is aborted */ |
| 37 |
HANDLE g_min_timeout_fd; |
| 38 |
uint32 g_num_devices; |
| 39 |
|
| 40 |
/* Table with information about rdpdr devices */ |
| 41 |
RDPDR_DEVICE g_rdpdr_device[RDPDR_MAX_DEVICES]; |
| 42 |
|
| 43 |
/* Used to store incoming io request, until they are ready to be completed */ |
| 44 |
struct async_iorequest |
| 45 |
{ |
| 46 |
uint32 fd, major, minor, offset, device, id, length; |
| 47 |
long timeout, /* Total timeout */ |
| 48 |
itv_timeout; /* Interval timeout (between serial characters) */ |
| 49 |
uint8 *buffer; |
| 50 |
DEVICE_FNS *fns; |
| 51 |
} g_iorequest[MAX_ASYNC_IO_REQUESTS]; |
| 52 |
|
| 53 |
/* Return device_id for a given handle */ |
| 54 |
int |
| 55 |
get_device_index(HANDLE handle) |
| 56 |
{ |
| 57 |
int i; |
| 58 |
for (i = 0; i < RDPDR_MAX_DEVICES; i++) |
| 59 |
{ |
| 60 |
if (g_rdpdr_device[i].handle == handle) |
| 61 |
return i; |
| 62 |
} |
| 63 |
return -1; |
| 64 |
} |
| 65 |
|
| 66 |
/* Converts a windows path to a unix path */ |
| 67 |
void |
| 68 |
convert_to_unix_filename(char *filename) |
| 69 |
{ |
| 70 |
char *p; |
| 71 |
|
| 72 |
while ((p = strchr(filename, '\\'))) |
| 73 |
{ |
| 74 |
*p = '/'; |
| 75 |
} |
| 76 |
} |
| 77 |
|
| 78 |
/* Add a new io request to the table containing pending io requests so it won't block rdesktop */ |
| 79 |
BOOL |
| 80 |
add_async_iorequest(uint32 device, uint32 file, uint32 id, uint32 major, uint32 length, |
| 81 |
DEVICE_FNS * fns, long total_timeout, long interval_timeout, uint8 * buffer) |
| 82 |
{ |
| 83 |
int i; |
| 84 |
struct async_iorequest *iorq; |
| 85 |
|
| 86 |
for (i = 0; i < MAX_ASYNC_IO_REQUESTS; i++) |
| 87 |
{ |
| 88 |
iorq = &g_iorequest[i]; |
| 89 |
|
| 90 |
if (iorq->fd == 0) |
| 91 |
{ |
| 92 |
iorq->device = device; |
| 93 |
iorq->fd = file; |
| 94 |
iorq->id = id; |
| 95 |
iorq->major = major; |
| 96 |
iorq->length = length; |
| 97 |
iorq->fns = fns; |
| 98 |
iorq->timeout = total_timeout; |
| 99 |
iorq->itv_timeout = interval_timeout; |
| 100 |
iorq->buffer = buffer; |
| 101 |
return True; |
| 102 |
} |
| 103 |
} |
| 104 |
error("IO request table full. Increase MAX_ASYNC_IO_REQUESTS in rdpdr.c!\n"); |
| 105 |
return False; |
| 106 |
} |
| 107 |
|
| 108 |
|
| 109 |
void |
| 110 |
rdpdr_send_connect(void) |
| 111 |
{ |
| 112 |
uint8 magic[4] = "rDCC"; |
| 113 |
STREAM s; |
| 114 |
|
| 115 |
s = channel_init(rdpdr_channel, 12); |
| 116 |
out_uint8a(s, magic, 4); |
| 117 |
out_uint16_le(s, 1); /* unknown */ |
| 118 |
out_uint16_le(s, 5); |
| 119 |
out_uint32_be(s, 0x815ed39d); /* IP address (use 127.0.0.1) 0x815ed39d */ |
| 120 |
s_mark_end(s); |
| 121 |
channel_send(s, rdpdr_channel); |
| 122 |
} |
| 123 |
|
| 124 |
|
| 125 |
void |
| 126 |
rdpdr_send_name(void) |
| 127 |
{ |
| 128 |
uint8 magic[4] = "rDNC"; |
| 129 |
uint32 hostlen = (strlen(hostname) + 1) * 2; |
| 130 |
STREAM s; |
| 131 |
|
| 132 |
s = channel_init(rdpdr_channel, 16 + hostlen); |
| 133 |
out_uint8a(s, magic, 4); |
| 134 |
out_uint16_le(s, 0x63); /* unknown */ |
| 135 |
out_uint16_le(s, 0x72); |
| 136 |
out_uint32(s, 0); |
| 137 |
out_uint32_le(s, hostlen); |
| 138 |
rdp_out_unistr(s, hostname, hostlen - 2); |
| 139 |
s_mark_end(s); |
| 140 |
channel_send(s, rdpdr_channel); |
| 141 |
} |
| 142 |
|
| 143 |
/* Returns the size of the payload of the announce packet */ |
| 144 |
int |
| 145 |
announcedata_size() |
| 146 |
{ |
| 147 |
int size, i; |
| 148 |
PRINTER *printerinfo; |
| 149 |
|
| 150 |
size = 8; //static announce size |
| 151 |
size += g_num_devices * 0x14; |
| 152 |
|
| 153 |
for (i = 0; i < g_num_devices; i++) |
| 154 |
{ |
| 155 |
if (g_rdpdr_device[i].device_type == DEVICE_TYPE_PRINTER) |
| 156 |
{ |
| 157 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
| 158 |
printerinfo->bloblen = |
| 159 |
printercache_load_blob(printerinfo->printer, &(printerinfo->blob)); |
| 160 |
|
| 161 |
size += 0x18; |
| 162 |
size += 2 * strlen(printerinfo->driver) + 2; |
| 163 |
size += 2 * strlen(printerinfo->printer) + 2; |
| 164 |
size += printerinfo->bloblen; |
| 165 |
} |
| 166 |
} |
| 167 |
|
| 168 |
return size; |
| 169 |
} |
| 170 |
|
| 171 |
void |
| 172 |
rdpdr_send_available(void) |
| 173 |
{ |
| 174 |
|
| 175 |
uint8 magic[4] = "rDAD"; |
| 176 |
uint32 driverlen, printerlen, bloblen; |
| 177 |
int i; |
| 178 |
STREAM s; |
| 179 |
PRINTER *printerinfo; |
| 180 |
|
| 181 |
s = channel_init(rdpdr_channel, announcedata_size()); |
| 182 |
out_uint8a(s, magic, 4); |
| 183 |
out_uint32_le(s, g_num_devices); |
| 184 |
|
| 185 |
for (i = 0; i < g_num_devices; i++) |
| 186 |
{ |
| 187 |
out_uint32_le(s, g_rdpdr_device[i].device_type); |
| 188 |
out_uint32_le(s, i); /* RDP Device ID */ |
| 189 |
out_uint8p(s, g_rdpdr_device[i].name, 8); |
| 190 |
|
| 191 |
switch (g_rdpdr_device[i].device_type) |
| 192 |
{ |
| 193 |
case DEVICE_TYPE_PRINTER: |
| 194 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
| 195 |
|
| 196 |
driverlen = 2 * strlen(printerinfo->driver) + 2; |
| 197 |
printerlen = 2 * strlen(printerinfo->printer) + 2; |
| 198 |
bloblen = printerinfo->bloblen; |
| 199 |
|
| 200 |
out_uint32_le(s, 24 + driverlen + printerlen + bloblen); /* length of extra info */ |
| 201 |
out_uint32_le(s, printerinfo->default_printer ? 2 : 0); |
| 202 |
out_uint8s(s, 8); /* unknown */ |
| 203 |
out_uint32_le(s, driverlen); |
| 204 |
out_uint32_le(s, printerlen); |
| 205 |
out_uint32_le(s, bloblen); |
| 206 |
rdp_out_unistr(s, printerinfo->driver, driverlen - 2); |
| 207 |
rdp_out_unistr(s, printerinfo->printer, printerlen - 2); |
| 208 |
out_uint8a(s, printerinfo->blob, bloblen); |
| 209 |
|
| 210 |
xfree(printerinfo->blob); /* Blob is sent twice if reconnecting */ |
| 211 |
break; |
| 212 |
default: |
| 213 |
out_uint32(s, 0); |
| 214 |
} |
| 215 |
} |
| 216 |
#if 0 |
| 217 |
out_uint32_le(s, 0x20); /* Device type 0x20 - smart card */ |
| 218 |
out_uint32_le(s, 0); |
| 219 |
out_uint8p(s, "SCARD", 5); |
| 220 |
out_uint8s(s, 3); |
| 221 |
out_uint32(s, 0); |
| 222 |
#endif |
| 223 |
|
| 224 |
s_mark_end(s); |
| 225 |
channel_send(s, rdpdr_channel); |
| 226 |
} |
| 227 |
|
| 228 |
void |
| 229 |
rdpdr_send_completion(uint32 device, uint32 id, uint32 status, uint32 result, uint8 * buffer, |
| 230 |
uint32 length) |
| 231 |
{ |
| 232 |
uint8 magic[4] = "rDCI"; |
| 233 |
STREAM s; |
| 234 |
|
| 235 |
s = channel_init(rdpdr_channel, 20 + length); |
| 236 |
out_uint8a(s, magic, 4); |
| 237 |
out_uint32_le(s, device); |
| 238 |
out_uint32_le(s, id); |
| 239 |
out_uint32_le(s, status); |
| 240 |
out_uint32_le(s, result); |
| 241 |
out_uint8p(s, buffer, length); |
| 242 |
s_mark_end(s); |
| 243 |
/* JIF |
| 244 |
hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); */ |
| 245 |
channel_send(s, rdpdr_channel); |
| 246 |
} |
| 247 |
|
| 248 |
static void |
| 249 |
rdpdr_process_irp(STREAM s) |
| 250 |
{ |
| 251 |
uint32 result = 0, |
| 252 |
length = 0, |
| 253 |
desired_access = 0, |
| 254 |
request, |
| 255 |
file, |
| 256 |
info_level, |
| 257 |
buffer_len, |
| 258 |
id, |
| 259 |
major, |
| 260 |
minor, |
| 261 |
device, |
| 262 |
offset, |
| 263 |
bytes_in, |
| 264 |
bytes_out, |
| 265 |
error_mode, |
| 266 |
share_mode, disposition, total_timeout, interval_timeout, flags_and_attributes = 0; |
| 267 |
|
| 268 |
char filename[256]; |
| 269 |
uint8 *buffer, *pst_buf; |
| 270 |
struct stream out; |
| 271 |
DEVICE_FNS *fns; |
| 272 |
BOOL rw_blocking = True; |
| 273 |
NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST; |
| 274 |
|
| 275 |
in_uint32_le(s, device); |
| 276 |
in_uint32_le(s, file); |
| 277 |
in_uint32_le(s, id); |
| 278 |
in_uint32_le(s, major); |
| 279 |
in_uint32_le(s, minor); |
| 280 |
|
| 281 |
buffer_len = 0; |
| 282 |
buffer = (uint8 *) xmalloc(1024); |
| 283 |
buffer[0] = 0; |
| 284 |
|
| 285 |
|
| 286 |
switch (g_rdpdr_device[device].device_type) |
| 287 |
{ |
| 288 |
case DEVICE_TYPE_SERIAL: |
| 289 |
|
| 290 |
fns = &serial_fns; |
| 291 |
/* should be async when aio is finished */ |
| 292 |
/*rw_blocking = False; */ |
| 293 |
break; |
| 294 |
|
| 295 |
case DEVICE_TYPE_PARALLEL: |
| 296 |
|
| 297 |
fns = ¶llel_fns; |
| 298 |
/* should be async when aio is finished */ |
| 299 |
/*rw_blocking = False; */ |
| 300 |
break; |
| 301 |
|
| 302 |
case DEVICE_TYPE_PRINTER: |
| 303 |
|
| 304 |
fns = &printer_fns; |
| 305 |
break; |
| 306 |
|
| 307 |
case DEVICE_TYPE_DISK: |
| 308 |
|
| 309 |
fns = &disk_fns; |
| 310 |
break; |
| 311 |
|
| 312 |
case DEVICE_TYPE_SCARD: |
| 313 |
default: |
| 314 |
|
| 315 |
error("IRP for bad device %ld\n", device); |
| 316 |
return; |
| 317 |
} |
| 318 |
|
| 319 |
switch (major) |
| 320 |
{ |
| 321 |
case IRP_MJ_CREATE: |
| 322 |
|
| 323 |
in_uint32_be(s, desired_access); |
| 324 |
in_uint8s(s, 0x08); // unknown |
| 325 |
in_uint32_le(s, error_mode); |
| 326 |
in_uint32_le(s, share_mode); |
| 327 |
in_uint32_le(s, disposition); |
| 328 |
in_uint32_le(s, flags_and_attributes); |
| 329 |
in_uint32_le(s, length); |
| 330 |
|
| 331 |
if (length && (length / 2) < 256) |
| 332 |
{ |
| 333 |
rdp_in_unistr(s, filename, length); |
| 334 |
convert_to_unix_filename(filename); |
| 335 |
} |
| 336 |
else |
| 337 |
{ |
| 338 |
filename[0] = 0; |
| 339 |
} |
| 340 |
|
| 341 |
if (!fns->create) |
| 342 |
{ |
| 343 |
status = STATUS_NOT_SUPPORTED; |
| 344 |
break; |
| 345 |
} |
| 346 |
|
| 347 |
status = fns->create(device, desired_access, share_mode, disposition, |
| 348 |
flags_and_attributes, filename, &result); |
| 349 |
buffer_len = 1; |
| 350 |
break; |
| 351 |
|
| 352 |
case IRP_MJ_CLOSE: |
| 353 |
if (!fns->close) |
| 354 |
{ |
| 355 |
status = STATUS_NOT_SUPPORTED; |
| 356 |
break; |
| 357 |
} |
| 358 |
|
| 359 |
status = fns->close(file); |
| 360 |
break; |
| 361 |
|
| 362 |
case IRP_MJ_READ: |
| 363 |
|
| 364 |
if (!fns->read) |
| 365 |
{ |
| 366 |
status = STATUS_NOT_SUPPORTED; |
| 367 |
break; |
| 368 |
} |
| 369 |
|
| 370 |
in_uint32_le(s, length); |
| 371 |
in_uint32_le(s, offset); |
| 372 |
#if WITH_DEBUG_RDP5 |
| 373 |
DEBUG(("RDPDR IRP Read (length: %d, offset: %d)\n", length, offset)); |
| 374 |
#endif |
| 375 |
if (rw_blocking) // Complete read immediately |
| 376 |
{ |
| 377 |
buffer = (uint8 *) xrealloc((void *) buffer, length); |
| 378 |
status = fns->read(file, buffer, length, offset, &result); |
| 379 |
buffer_len = result; |
| 380 |
break; |
| 381 |
} |
| 382 |
|
| 383 |
// Add request to table |
| 384 |
pst_buf = (uint8 *) xmalloc(length); |
| 385 |
serial_get_timeout(file, length, &total_timeout, &interval_timeout); |
| 386 |
if (add_async_iorequest |
| 387 |
(device, file, id, major, length, fns, total_timeout, interval_timeout, |
| 388 |
pst_buf)) |
| 389 |
{ |
| 390 |
status = STATUS_PENDING; |
| 391 |
break; |
| 392 |
} |
| 393 |
|
| 394 |
status = STATUS_CANCELLED; |
| 395 |
break; |
| 396 |
|
| 397 |
case IRP_MJ_WRITE: |
| 398 |
|
| 399 |
buffer_len = 1; |
| 400 |
|
| 401 |
if (!fns->write) |
| 402 |
{ |
| 403 |
status = STATUS_NOT_SUPPORTED; |
| 404 |
break; |
| 405 |
} |
| 406 |
|
| 407 |
in_uint32_le(s, length); |
| 408 |
in_uint32_le(s, offset); |
| 409 |
in_uint8s(s, 0x18); |
| 410 |
#if WITH_DEBUG_RDP5 |
| 411 |
DEBUG(("RDPDR IRP Write (length: %d)\n", result)); |
| 412 |
#endif |
| 413 |
if (rw_blocking) // Complete immediately |
| 414 |
{ |
| 415 |
status = fns->write(file, s->p, length, offset, &result); |
| 416 |
break; |
| 417 |
} |
| 418 |
|
| 419 |
// Add to table |
| 420 |
pst_buf = (uint8 *) xmalloc(length); |
| 421 |
in_uint8a(s, pst_buf, length); |
| 422 |
|
| 423 |
if (add_async_iorequest |
| 424 |
(device, file, id, major, length, fns, 0, 0, pst_buf)) |
| 425 |
{ |
| 426 |
status = STATUS_PENDING; |
| 427 |
break; |
| 428 |
} |
| 429 |
|
| 430 |
status = STATUS_CANCELLED; |
| 431 |
break; |
| 432 |
|
| 433 |
case IRP_MJ_QUERY_INFORMATION: |
| 434 |
|
| 435 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
| 436 |
{ |
| 437 |
status = STATUS_INVALID_HANDLE; |
| 438 |
break; |
| 439 |
} |
| 440 |
in_uint32_le(s, info_level); |
| 441 |
|
| 442 |
out.data = out.p = buffer; |
| 443 |
out.size = sizeof(buffer); |
| 444 |
status = disk_query_information(file, info_level, &out); |
| 445 |
result = buffer_len = out.p - out.data; |
| 446 |
|
| 447 |
break; |
| 448 |
|
| 449 |
case IRP_MJ_SET_INFORMATION: |
| 450 |
|
| 451 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
| 452 |
{ |
| 453 |
status = STATUS_INVALID_HANDLE; |
| 454 |
break; |
| 455 |
} |
| 456 |
|
| 457 |
in_uint32_le(s, info_level); |
| 458 |
|
| 459 |
out.data = out.p = buffer; |
| 460 |
out.size = sizeof(buffer); |
| 461 |
status = disk_set_information(file, info_level, s, &out); |
| 462 |
result = buffer_len = out.p - out.data; |
| 463 |
break; |
| 464 |
|
| 465 |
case IRP_MJ_QUERY_VOLUME_INFORMATION: |
| 466 |
|
| 467 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
| 468 |
{ |
| 469 |
status = STATUS_INVALID_HANDLE; |
| 470 |
break; |
| 471 |
} |
| 472 |
|
| 473 |
in_uint32_le(s, info_level); |
| 474 |
|
| 475 |
out.data = out.p = buffer; |
| 476 |
out.size = sizeof(buffer); |
| 477 |
status = disk_query_volume_information(file, info_level, &out); |
| 478 |
result = buffer_len = out.p - out.data; |
| 479 |
break; |
| 480 |
|
| 481 |
case IRP_MJ_DIRECTORY_CONTROL: |
| 482 |
|
| 483 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
| 484 |
{ |
| 485 |
status = STATUS_INVALID_HANDLE; |
| 486 |
break; |
| 487 |
} |
| 488 |
|
| 489 |
switch (minor) |
| 490 |
{ |
| 491 |
case IRP_MN_QUERY_DIRECTORY: |
| 492 |
|
| 493 |
in_uint32_le(s, info_level); |
| 494 |
in_uint8s(s, 1); |
| 495 |
in_uint32_le(s, length); |
| 496 |
in_uint8s(s, 0x17); |
| 497 |
if (length && length < 2 * 255) |
| 498 |
{ |
| 499 |
rdp_in_unistr(s, filename, length); |
| 500 |
convert_to_unix_filename(filename); |
| 501 |
} |
| 502 |
else |
| 503 |
{ |
| 504 |
filename[0] = 0; |
| 505 |
} |
| 506 |
out.data = out.p = buffer; |
| 507 |
out.size = sizeof(buffer); |
| 508 |
status = disk_query_directory(file, info_level, filename, |
| 509 |
&out); |
| 510 |
result = buffer_len = out.p - out.data; |
| 511 |
if (!buffer_len) |
| 512 |
buffer_len++; |
| 513 |
break; |
| 514 |
|
| 515 |
case IRP_MN_NOTIFY_CHANGE_DIRECTORY: |
| 516 |
|
| 517 |
/* JIF |
| 518 |
unimpl("IRP major=0x%x minor=0x%x: IRP_MN_NOTIFY_CHANGE_DIRECTORY\n", major, minor); */ |
| 519 |
status = STATUS_PENDING; // Don't send completion packet |
| 520 |
break; |
| 521 |
|
| 522 |
default: |
| 523 |
|
| 524 |
status = STATUS_INVALID_PARAMETER; |
| 525 |
/* JIF |
| 526 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); */ |
| 527 |
} |
| 528 |
break; |
| 529 |
|
| 530 |
case IRP_MJ_DEVICE_CONTROL: |
| 531 |
|
| 532 |
if (!fns->device_control) |
| 533 |
{ |
| 534 |
status = STATUS_NOT_SUPPORTED; |
| 535 |
break; |
| 536 |
} |
| 537 |
|
| 538 |
in_uint32_le(s, bytes_out); |
| 539 |
in_uint32_le(s, bytes_in); |
| 540 |
in_uint32_le(s, request); |
| 541 |
in_uint8s(s, 0x14); |
| 542 |
|
| 543 |
buffer = (uint8 *) xrealloc((void *) buffer, bytes_out + 0x14); |
| 544 |
out.data = out.p = buffer; |
| 545 |
out.size = sizeof(buffer); |
| 546 |
status = fns->device_control(file, request, s, &out); |
| 547 |
result = buffer_len = out.p - out.data; |
| 548 |
break; |
| 549 |
|
| 550 |
default: |
| 551 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); |
| 552 |
break; |
| 553 |
} |
| 554 |
|
| 555 |
if (status != STATUS_PENDING) |
| 556 |
{ |
| 557 |
rdpdr_send_completion(device, id, status, result, buffer, buffer_len); |
| 558 |
} |
| 559 |
xfree(buffer); |
| 560 |
|
| 561 |
} |
| 562 |
|
| 563 |
void |
| 564 |
rdpdr_send_clientcapabilty(void) |
| 565 |
{ |
| 566 |
uint8 magic[4] = "rDPC"; |
| 567 |
STREAM s; |
| 568 |
|
| 569 |
s = channel_init(rdpdr_channel, 0x50); |
| 570 |
out_uint8a(s, magic, 4); |
| 571 |
out_uint32_le(s, 5); /* count */ |
| 572 |
out_uint16_le(s, 1); /* first */ |
| 573 |
out_uint16_le(s, 0x28); /* length */ |
| 574 |
out_uint32_le(s, 1); |
| 575 |
out_uint32_le(s, 2); |
| 576 |
out_uint16_le(s, 2); |
| 577 |
out_uint16_le(s, 5); |
| 578 |
out_uint16_le(s, 1); |
| 579 |
out_uint16_le(s, 5); |
| 580 |
out_uint16_le(s, 0xFFFF); |
| 581 |
out_uint16_le(s, 0); |
| 582 |
out_uint32_le(s, 0); |
| 583 |
out_uint32_le(s, 3); |
| 584 |
out_uint32_le(s, 0); |
| 585 |
out_uint32_le(s, 0); |
| 586 |
out_uint16_le(s, 2); /* second */ |
| 587 |
out_uint16_le(s, 8); /* length */ |
| 588 |
out_uint32_le(s, 1); |
| 589 |
out_uint16_le(s, 3); /* third */ |
| 590 |
out_uint16_le(s, 8); /* length */ |
| 591 |
out_uint32_le(s, 1); |
| 592 |
out_uint16_le(s, 4); /* fourth */ |
| 593 |
out_uint16_le(s, 8); /* length */ |
| 594 |
out_uint32_le(s, 1); |
| 595 |
out_uint16_le(s, 5); /* fifth */ |
| 596 |
out_uint16_le(s, 8); /* length */ |
| 597 |
out_uint32_le(s, 1); |
| 598 |
|
| 599 |
s_mark_end(s); |
| 600 |
channel_send(s, rdpdr_channel); |
| 601 |
} |
| 602 |
|
| 603 |
static void |
| 604 |
rdpdr_process(STREAM s) |
| 605 |
{ |
| 606 |
uint32 handle; |
| 607 |
uint8 *magic; |
| 608 |
|
| 609 |
#if WITH_DEBUG_RDP5 |
| 610 |
printf("--- rdpdr_process ---\n"); |
| 611 |
hexdump(s->p, s->end - s->p); |
| 612 |
#endif |
| 613 |
in_uint8p(s, magic, 4); |
| 614 |
|
| 615 |
if ((magic[0] == 'r') && (magic[1] == 'D')) |
| 616 |
{ |
| 617 |
if ((magic[2] == 'R') && (magic[3] == 'I')) |
| 618 |
{ |
| 619 |
rdpdr_process_irp(s); |
| 620 |
return; |
| 621 |
} |
| 622 |
if ((magic[2] == 'n') && (magic[3] == 'I')) |
| 623 |
{ |
| 624 |
rdpdr_send_connect(); |
| 625 |
rdpdr_send_name(); |
| 626 |
return; |
| 627 |
} |
| 628 |
if ((magic[2] == 'C') && (magic[3] == 'C')) |
| 629 |
{ |
| 630 |
/* connect from server */ |
| 631 |
rdpdr_send_clientcapabilty(); |
| 632 |
rdpdr_send_available(); |
| 633 |
return; |
| 634 |
} |
| 635 |
if ((magic[2] == 'r') && (magic[3] == 'd')) |
| 636 |
{ |
| 637 |
/* connect to a specific resource */ |
| 638 |
in_uint32(s, handle); |
| 639 |
#if WITH_DEBUG_RDP5 |
| 640 |
DEBUG(("RDPDR: Server connected to resource %d\n", handle)); |
| 641 |
#endif |
| 642 |
return; |
| 643 |
} |
| 644 |
if ((magic[2] == 'P') && (magic[3] == 'S')) |
| 645 |
{ |
| 646 |
/* server capability */ |
| 647 |
return; |
| 648 |
} |
| 649 |
} |
| 650 |
if ((magic[0] == 'R') && (magic[1] == 'P')) |
| 651 |
{ |
| 652 |
if ((magic[2] == 'C') && (magic[3] == 'P')) |
| 653 |
{ |
| 654 |
printercache_process(s); |
| 655 |
return; |
| 656 |
} |
| 657 |
} |
| 658 |
unimpl("RDPDR packet type %c%c%c%c\n", magic[0], magic[1], magic[2], magic[3]); |
| 659 |
} |
| 660 |
|
| 661 |
BOOL |
| 662 |
rdpdr_init() |
| 663 |
{ |
| 664 |
if (g_num_devices > 0) |
| 665 |
{ |
| 666 |
rdpdr_channel = |
| 667 |
channel_register("rdpdr", |
| 668 |
CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_COMPRESS_RDP, |
| 669 |
rdpdr_process); |
| 670 |
} |
| 671 |
|
| 672 |
return (rdpdr_channel != NULL); |
| 673 |
} |
| 674 |
|
| 675 |
/* Add file descriptors of pending io request to select() */ |
| 676 |
void |
| 677 |
rdpdr_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv, BOOL * timeout) |
| 678 |
{ |
| 679 |
int i; |
| 680 |
long select_timeout = 0; // Timeout value to be used for select() (in millisecons). |
| 681 |
struct async_iorequest *iorq; |
| 682 |
|
| 683 |
for (i = 0; i < MAX_ASYNC_IO_REQUESTS; i++) |
| 684 |
{ |
| 685 |
iorq = &g_iorequest[i]; |
| 686 |
|
| 687 |
if (iorq->fd != 0) // Found a pending io request |
| 688 |
{ |
| 689 |
switch (iorq->major) |
| 690 |
{ |
| 691 |
case IRP_MJ_READ: |
| 692 |
|
| 693 |
FD_SET(iorq->fd, rfds); |
| 694 |
|
| 695 |
// Check if io request timeout is smaller than current (but not 0). |
| 696 |
if (iorq->timeout |
| 697 |
&& (select_timeout == 0 |
| 698 |
|| iorq->timeout < select_timeout)) |
| 699 |
{ |
| 700 |
// Set new timeout |
| 701 |
select_timeout = iorq->timeout; |
| 702 |
g_min_timeout_fd = iorq->fd; /* Remember fd */ |
| 703 |
tv->tv_sec = select_timeout / 1000; |
| 704 |
tv->tv_usec = (select_timeout % 1000) * 1000; |
| 705 |
*timeout = True; |
| 706 |
} |
| 707 |
break; |
| 708 |
|
| 709 |
case IRP_MJ_WRITE: |
| 710 |
|
| 711 |
FD_SET(iorq->fd, wfds); |
| 712 |
break; |
| 713 |
|
| 714 |
} |
| 715 |
*n = MAX(*n, iorq->fd); |
| 716 |
} |
| 717 |
} |
| 718 |
} |
| 719 |
|
| 720 |
/* Check if select() returned with one of the rdpdr file descriptors, and complete io if it did */ |
| 721 |
void |
| 722 |
rdpdr_check_fds(fd_set * rfds, fd_set * wfds, BOOL timed_out) |
| 723 |
{ |
| 724 |
int i; |
| 725 |
NTSTATUS status; |
| 726 |
uint32 result = 0, buffer_len = 0; |
| 727 |
DEVICE_FNS *fns; |
| 728 |
struct async_iorequest *iorq; |
| 729 |
|
| 730 |
if (timed_out) |
| 731 |
{ |
| 732 |
rdpdr_abort_io(g_min_timeout_fd, 0, STATUS_TIMEOUT); |
| 733 |
return; |
| 734 |
} |
| 735 |
|
| 736 |
// Walk through array of pending io_rq's |
| 737 |
for (i = 0; i < MAX_ASYNC_IO_REQUESTS; i++) |
| 738 |
{ |
| 739 |
iorq = &g_iorequest[i]; |
| 740 |
|
| 741 |
if (iorq->fd != 0) |
| 742 |
{ |
| 743 |
switch (iorq->major) |
| 744 |
{ |
| 745 |
|
| 746 |
case IRP_MJ_READ: |
| 747 |
|
| 748 |
if (FD_ISSET(iorq->fd, rfds)) |
| 749 |
{ |
| 750 |
// Read, and send data. |
| 751 |
fns = iorq->fns; |
| 752 |
status = fns->read(iorq->fd, iorq->buffer, |
| 753 |
iorq->length, 0, &result); |
| 754 |
buffer_len = result; |
| 755 |
|
| 756 |
rdpdr_send_completion(iorq->device, iorq->id, |
| 757 |
status, result, iorq->buffer, |
| 758 |
buffer_len); |
| 759 |
#if WITH_DEBUG_RDP5 |
| 760 |
DEBUG(("RDPDR: %d bytes of data read\n", result)); |
| 761 |
#endif |
| 762 |
xfree(iorq->buffer); |
| 763 |
iorq->fd = 0; |
| 764 |
} |
| 765 |
break; |
| 766 |
|
| 767 |
case IRP_MJ_WRITE: |
| 768 |
|
| 769 |
if (FD_ISSET(iorq->fd, wfds)) |
| 770 |
{ |
| 771 |
// Write data and send completion. |
| 772 |
fns = iorq->fns; |
| 773 |
status = fns->write(iorq->fd, iorq->buffer, |
| 774 |
iorq->length, 0, &result); |
| 775 |
rdpdr_send_completion(iorq->device, iorq->id, |
| 776 |
status, result, "", 1); |
| 777 |
|
| 778 |
xfree(iorq->buffer); |
| 779 |
iorq->fd = 0; |
| 780 |
} |
| 781 |
break; |
| 782 |
} |
| 783 |
} |
| 784 |
} |
| 785 |
} |
| 786 |
|
| 787 |
/* Abort a pending io request for a given handle and major */ |
| 788 |
BOOL |
| 789 |
rdpdr_abort_io(uint32 fd, uint32 major, NTSTATUS status) |
| 790 |
{ |
| 791 |
uint32 result; |
| 792 |
int i; |
| 793 |
struct async_iorequest *iorq; |
| 794 |
|
| 795 |
for (i = 0; i < MAX_ASYNC_IO_REQUESTS; i++) |
| 796 |
{ |
| 797 |
iorq = &g_iorequest[i]; |
| 798 |
|
| 799 |
// Only remove from table when major is not set, or when correct major is supplied. |
| 800 |
// Abort read should not abort a write io request. |
| 801 |
if ((iorq->fd == fd) && (major == 0 || iorq->major == major)) |
| 802 |
{ |
| 803 |
result = 0; |
| 804 |
rdpdr_send_completion(iorq->device, iorq->id, status, result, "", 1); |
| 805 |
xfree(iorq->buffer); |
| 806 |
iorq->fd = 0; |
| 807 |
return True; |
| 808 |
} |
| 809 |
} |
| 810 |
return False; |
| 811 |
} |
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