1 |
#include <unistd.h> |
2 |
#include <sys/types.h> |
3 |
#include <sys/time.h> |
4 |
#include <dirent.h> /* opendir, closedir, readdir */ |
5 |
#include <time.h> |
6 |
#include "rdesktop.h" |
7 |
|
8 |
#define IRP_MJ_CREATE 0x00 |
9 |
#define IRP_MJ_CLOSE 0x02 |
10 |
#define IRP_MJ_READ 0x03 |
11 |
#define IRP_MJ_WRITE 0x04 |
12 |
#define IRP_MJ_DEVICE_CONTROL 0x0e |
13 |
|
14 |
#define IRP_MJ_CREATE 0x00 |
15 |
#define IRP_MJ_CLOSE 0x02 |
16 |
#define IRP_MJ_READ 0x03 |
17 |
#define IRP_MJ_WRITE 0x04 |
18 |
#define IRP_MJ_QUERY_INFORMATION 0x05 |
19 |
#define IRP_MJ_SET_INFORMATION 0x06 |
20 |
#define IRP_MJ_QUERY_VOLUME_INFORMATION 0x0a |
21 |
#define IRP_MJ_DIRECTORY_CONTROL 0x0c |
22 |
#define IRP_MJ_DEVICE_CONTROL 0x0e |
23 |
|
24 |
#define IRP_MN_QUERY_DIRECTORY 0x01 |
25 |
#define IRP_MN_NOTIFY_CHANGE_DIRECTORY 0x02 |
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 |
extern FILEINFO g_fileinfo[]; |
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 |
/* using a linked list ensures that they are processed in the right order, */ |
45 |
/* if multiple ios are being done on the same fd */ |
46 |
struct async_iorequest |
47 |
{ |
48 |
uint32 fd, major, minor, offset, device, id, length, partial_len; |
49 |
long timeout, /* Total timeout */ |
50 |
itv_timeout; /* Interval timeout (between serial characters) */ |
51 |
uint8 *buffer; |
52 |
DEVICE_FNS *fns; |
53 |
|
54 |
struct async_iorequest *next; /* next element in list */ |
55 |
}; |
56 |
|
57 |
struct async_iorequest *g_iorequest; |
58 |
|
59 |
/* Return device_id for a given handle */ |
60 |
int |
61 |
get_device_index(HANDLE handle) |
62 |
{ |
63 |
int i; |
64 |
for (i = 0; i < RDPDR_MAX_DEVICES; i++) |
65 |
{ |
66 |
if (g_rdpdr_device[i].handle == handle) |
67 |
return i; |
68 |
} |
69 |
return -1; |
70 |
} |
71 |
|
72 |
/* Converts a windows path to a unix path */ |
73 |
void |
74 |
convert_to_unix_filename(char *filename) |
75 |
{ |
76 |
char *p; |
77 |
|
78 |
while ((p = strchr(filename, '\\'))) |
79 |
{ |
80 |
*p = '/'; |
81 |
} |
82 |
} |
83 |
|
84 |
BOOL |
85 |
rdpdr_handle_ok(int device, int handle) |
86 |
{ |
87 |
switch (g_rdpdr_device[device].device_type) |
88 |
{ |
89 |
case DEVICE_TYPE_PARALLEL: |
90 |
case DEVICE_TYPE_SERIAL: |
91 |
case DEVICE_TYPE_PRINTER: |
92 |
case DEVICE_TYPE_SCARD: |
93 |
if (g_rdpdr_device[device].handle != handle) |
94 |
return False; |
95 |
break; |
96 |
case DEVICE_TYPE_DISK: |
97 |
if (g_fileinfo[handle].device_id != device) |
98 |
return False; |
99 |
break; |
100 |
} |
101 |
return True; |
102 |
} |
103 |
|
104 |
/* Add a new io request to the table containing pending io requests so it won't block rdesktop */ |
105 |
BOOL |
106 |
add_async_iorequest(uint32 device, uint32 file, uint32 id, uint32 major, uint32 length, |
107 |
DEVICE_FNS * fns, uint32 total_timeout, uint32 interval_timeout, uint8 * buffer, |
108 |
uint32 offset) |
109 |
{ |
110 |
struct async_iorequest *iorq; |
111 |
|
112 |
if (g_iorequest == NULL) |
113 |
{ |
114 |
g_iorequest = (struct async_iorequest *) xmalloc(sizeof(struct async_iorequest)); |
115 |
if (!g_iorequest) |
116 |
return False; |
117 |
g_iorequest->fd = 0; |
118 |
g_iorequest->next = NULL; |
119 |
} |
120 |
|
121 |
iorq = g_iorequest; |
122 |
|
123 |
while (iorq->fd != 0) |
124 |
{ |
125 |
// create new element if needed |
126 |
if (iorq->next == NULL) |
127 |
{ |
128 |
iorq->next = |
129 |
(struct async_iorequest *) xmalloc(sizeof(struct async_iorequest)); |
130 |
if (!iorq->next) |
131 |
return False; |
132 |
iorq->next->fd = 0; |
133 |
iorq->next->next = NULL; |
134 |
} |
135 |
iorq = iorq->next; |
136 |
} |
137 |
iorq->device = device; |
138 |
iorq->fd = file; |
139 |
iorq->id = id; |
140 |
iorq->major = major; |
141 |
iorq->length = length; |
142 |
iorq->partial_len = 0; |
143 |
iorq->fns = fns; |
144 |
iorq->timeout = total_timeout; |
145 |
iorq->itv_timeout = interval_timeout; |
146 |
iorq->buffer = buffer; |
147 |
iorq->offset = offset; |
148 |
return True; |
149 |
} |
150 |
|
151 |
void |
152 |
rdpdr_send_connect(void) |
153 |
{ |
154 |
uint8 magic[4] = "rDCC"; |
155 |
STREAM s; |
156 |
|
157 |
s = channel_init(rdpdr_channel, 12); |
158 |
out_uint8a(s, magic, 4); |
159 |
out_uint16_le(s, 1); /* unknown */ |
160 |
out_uint16_le(s, 5); |
161 |
out_uint32_be(s, 0x815ed39d); /* IP address (use 127.0.0.1) 0x815ed39d */ |
162 |
s_mark_end(s); |
163 |
channel_send(s, rdpdr_channel); |
164 |
} |
165 |
|
166 |
|
167 |
void |
168 |
rdpdr_send_name(void) |
169 |
{ |
170 |
uint8 magic[4] = "rDNC"; |
171 |
uint32 hostlen = (strlen(hostname) + 1) * 2; |
172 |
STREAM s; |
173 |
|
174 |
s = channel_init(rdpdr_channel, 16 + hostlen); |
175 |
out_uint8a(s, magic, 4); |
176 |
out_uint16_le(s, 0x63); /* unknown */ |
177 |
out_uint16_le(s, 0x72); |
178 |
out_uint32(s, 0); |
179 |
out_uint32_le(s, hostlen); |
180 |
rdp_out_unistr(s, hostname, hostlen - 2); |
181 |
s_mark_end(s); |
182 |
channel_send(s, rdpdr_channel); |
183 |
} |
184 |
|
185 |
/* Returns the size of the payload of the announce packet */ |
186 |
int |
187 |
announcedata_size() |
188 |
{ |
189 |
int size, i; |
190 |
PRINTER *printerinfo; |
191 |
|
192 |
size = 8; //static announce size |
193 |
size += g_num_devices * 0x14; |
194 |
|
195 |
for (i = 0; i < g_num_devices; i++) |
196 |
{ |
197 |
if (g_rdpdr_device[i].device_type == DEVICE_TYPE_PRINTER) |
198 |
{ |
199 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
200 |
printerinfo->bloblen = |
201 |
printercache_load_blob(printerinfo->printer, &(printerinfo->blob)); |
202 |
|
203 |
size += 0x18; |
204 |
size += 2 * strlen(printerinfo->driver) + 2; |
205 |
size += 2 * strlen(printerinfo->printer) + 2; |
206 |
size += printerinfo->bloblen; |
207 |
} |
208 |
} |
209 |
|
210 |
return size; |
211 |
} |
212 |
|
213 |
void |
214 |
rdpdr_send_available(void) |
215 |
{ |
216 |
|
217 |
uint8 magic[4] = "rDAD"; |
218 |
uint32 driverlen, printerlen, bloblen; |
219 |
int i; |
220 |
STREAM s; |
221 |
PRINTER *printerinfo; |
222 |
|
223 |
s = channel_init(rdpdr_channel, announcedata_size()); |
224 |
out_uint8a(s, magic, 4); |
225 |
out_uint32_le(s, g_num_devices); |
226 |
|
227 |
for (i = 0; i < g_num_devices; i++) |
228 |
{ |
229 |
out_uint32_le(s, g_rdpdr_device[i].device_type); |
230 |
out_uint32_le(s, i); /* RDP Device ID */ |
231 |
out_uint8p(s, g_rdpdr_device[i].name, 8); |
232 |
|
233 |
switch (g_rdpdr_device[i].device_type) |
234 |
{ |
235 |
case DEVICE_TYPE_PRINTER: |
236 |
printerinfo = (PRINTER *) g_rdpdr_device[i].pdevice_data; |
237 |
|
238 |
driverlen = 2 * strlen(printerinfo->driver) + 2; |
239 |
printerlen = 2 * strlen(printerinfo->printer) + 2; |
240 |
bloblen = printerinfo->bloblen; |
241 |
|
242 |
out_uint32_le(s, 24 + driverlen + printerlen + bloblen); /* length of extra info */ |
243 |
out_uint32_le(s, printerinfo->default_printer ? 2 : 0); |
244 |
out_uint8s(s, 8); /* unknown */ |
245 |
out_uint32_le(s, driverlen); |
246 |
out_uint32_le(s, printerlen); |
247 |
out_uint32_le(s, bloblen); |
248 |
rdp_out_unistr(s, printerinfo->driver, driverlen - 2); |
249 |
rdp_out_unistr(s, printerinfo->printer, printerlen - 2); |
250 |
out_uint8a(s, printerinfo->blob, bloblen); |
251 |
|
252 |
if (printerinfo->blob) |
253 |
xfree(printerinfo->blob); /* Blob is sent twice if reconnecting */ |
254 |
break; |
255 |
default: |
256 |
out_uint32(s, 0); |
257 |
} |
258 |
} |
259 |
#if 0 |
260 |
out_uint32_le(s, 0x20); /* Device type 0x20 - smart card */ |
261 |
out_uint32_le(s, 0); |
262 |
out_uint8p(s, "SCARD", 5); |
263 |
out_uint8s(s, 3); |
264 |
out_uint32(s, 0); |
265 |
#endif |
266 |
|
267 |
s_mark_end(s); |
268 |
channel_send(s, rdpdr_channel); |
269 |
} |
270 |
|
271 |
void |
272 |
rdpdr_send_completion(uint32 device, uint32 id, uint32 status, uint32 result, uint8 * buffer, |
273 |
uint32 length) |
274 |
{ |
275 |
uint8 magic[4] = "rDCI"; |
276 |
STREAM s; |
277 |
|
278 |
s = channel_init(rdpdr_channel, 20 + length); |
279 |
out_uint8a(s, magic, 4); |
280 |
out_uint32_le(s, device); |
281 |
out_uint32_le(s, id); |
282 |
out_uint32_le(s, status); |
283 |
out_uint32_le(s, result); |
284 |
out_uint8p(s, buffer, length); |
285 |
s_mark_end(s); |
286 |
/* JIF |
287 |
hexdump(s->channel_hdr + 8, s->end - s->channel_hdr - 8); */ |
288 |
channel_send(s, rdpdr_channel); |
289 |
} |
290 |
|
291 |
static void |
292 |
rdpdr_process_irp(STREAM s) |
293 |
{ |
294 |
uint32 result = 0, |
295 |
length = 0, |
296 |
desired_access = 0, |
297 |
request, |
298 |
file, |
299 |
info_level, |
300 |
buffer_len, |
301 |
id, |
302 |
major, |
303 |
minor, |
304 |
device, |
305 |
offset, |
306 |
bytes_in, |
307 |
bytes_out, |
308 |
error_mode, |
309 |
share_mode, disposition, total_timeout, interval_timeout, flags_and_attributes = 0; |
310 |
|
311 |
char filename[256]; |
312 |
uint8 *buffer, *pst_buf; |
313 |
struct stream out; |
314 |
DEVICE_FNS *fns; |
315 |
BOOL rw_blocking = True; |
316 |
NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST; |
317 |
|
318 |
in_uint32_le(s, device); |
319 |
in_uint32_le(s, file); |
320 |
in_uint32_le(s, id); |
321 |
in_uint32_le(s, major); |
322 |
in_uint32_le(s, minor); |
323 |
|
324 |
buffer_len = 0; |
325 |
buffer = (uint8 *) xmalloc(1024); |
326 |
buffer[0] = 0; |
327 |
|
328 |
switch (g_rdpdr_device[device].device_type) |
329 |
{ |
330 |
case DEVICE_TYPE_SERIAL: |
331 |
|
332 |
fns = &serial_fns; |
333 |
rw_blocking = False; |
334 |
break; |
335 |
|
336 |
case DEVICE_TYPE_PARALLEL: |
337 |
|
338 |
fns = ¶llel_fns; |
339 |
rw_blocking = False; |
340 |
break; |
341 |
|
342 |
case DEVICE_TYPE_PRINTER: |
343 |
|
344 |
fns = &printer_fns; |
345 |
break; |
346 |
|
347 |
case DEVICE_TYPE_DISK: |
348 |
|
349 |
fns = &disk_fns; |
350 |
rw_blocking = False; |
351 |
break; |
352 |
|
353 |
case DEVICE_TYPE_SCARD: |
354 |
default: |
355 |
|
356 |
error("IRP for bad device %ld\n", device); |
357 |
return; |
358 |
} |
359 |
|
360 |
switch (major) |
361 |
{ |
362 |
case IRP_MJ_CREATE: |
363 |
|
364 |
in_uint32_be(s, desired_access); |
365 |
in_uint8s(s, 0x08); // unknown |
366 |
in_uint32_le(s, error_mode); |
367 |
in_uint32_le(s, share_mode); |
368 |
in_uint32_le(s, disposition); |
369 |
in_uint32_le(s, flags_and_attributes); |
370 |
in_uint32_le(s, length); |
371 |
|
372 |
if (length && (length / 2) < 256) |
373 |
{ |
374 |
rdp_in_unistr(s, filename, length); |
375 |
convert_to_unix_filename(filename); |
376 |
} |
377 |
else |
378 |
{ |
379 |
filename[0] = 0; |
380 |
} |
381 |
|
382 |
if (!fns->create) |
383 |
{ |
384 |
status = STATUS_NOT_SUPPORTED; |
385 |
break; |
386 |
} |
387 |
|
388 |
status = fns->create(device, desired_access, share_mode, disposition, |
389 |
flags_and_attributes, filename, &result); |
390 |
buffer_len = 1; |
391 |
break; |
392 |
|
393 |
case IRP_MJ_CLOSE: |
394 |
if (!fns->close) |
395 |
{ |
396 |
status = STATUS_NOT_SUPPORTED; |
397 |
break; |
398 |
} |
399 |
|
400 |
status = fns->close(file); |
401 |
break; |
402 |
|
403 |
case IRP_MJ_READ: |
404 |
|
405 |
if (!fns->read) |
406 |
{ |
407 |
status = STATUS_NOT_SUPPORTED; |
408 |
break; |
409 |
} |
410 |
|
411 |
in_uint32_le(s, length); |
412 |
in_uint32_le(s, offset); |
413 |
#if WITH_DEBUG_RDP5 |
414 |
DEBUG(("RDPDR IRP Read (length: %d, offset: %d)\n", length, offset)); |
415 |
#endif |
416 |
if (!rdpdr_handle_ok(device, file)) |
417 |
{ |
418 |
status = STATUS_INVALID_HANDLE; |
419 |
break; |
420 |
} |
421 |
|
422 |
if (rw_blocking) // Complete read immediately |
423 |
{ |
424 |
buffer = (uint8 *) xrealloc((void *) buffer, length); |
425 |
if (!buffer) |
426 |
{ |
427 |
status = STATUS_CANCELLED; |
428 |
break; |
429 |
} |
430 |
status = fns->read(file, buffer, length, offset, &result); |
431 |
buffer_len = result; |
432 |
break; |
433 |
} |
434 |
|
435 |
// Add request to table |
436 |
pst_buf = (uint8 *) xmalloc(length); |
437 |
if (!pst_buf) |
438 |
{ |
439 |
status = STATUS_CANCELLED; |
440 |
break; |
441 |
} |
442 |
serial_get_timeout(file, length, &total_timeout, &interval_timeout); |
443 |
if (add_async_iorequest |
444 |
(device, file, id, major, length, fns, total_timeout, interval_timeout, |
445 |
pst_buf, offset)) |
446 |
{ |
447 |
status = STATUS_PENDING; |
448 |
break; |
449 |
} |
450 |
|
451 |
status = STATUS_CANCELLED; |
452 |
break; |
453 |
case IRP_MJ_WRITE: |
454 |
|
455 |
buffer_len = 1; |
456 |
|
457 |
if (!fns->write) |
458 |
{ |
459 |
status = STATUS_NOT_SUPPORTED; |
460 |
break; |
461 |
} |
462 |
|
463 |
in_uint32_le(s, length); |
464 |
in_uint32_le(s, offset); |
465 |
in_uint8s(s, 0x18); |
466 |
#if WITH_DEBUG_RDP5 |
467 |
DEBUG(("RDPDR IRP Write (length: %d)\n", result)); |
468 |
#endif |
469 |
if (!rdpdr_handle_ok(device, file)) |
470 |
{ |
471 |
status = STATUS_INVALID_HANDLE; |
472 |
break; |
473 |
} |
474 |
|
475 |
if (rw_blocking) // Complete immediately |
476 |
{ |
477 |
status = fns->write(file, s->p, length, offset, &result); |
478 |
break; |
479 |
} |
480 |
|
481 |
// Add to table |
482 |
pst_buf = (uint8 *) xmalloc(length); |
483 |
if (!pst_buf) |
484 |
{ |
485 |
status = STATUS_CANCELLED; |
486 |
break; |
487 |
} |
488 |
|
489 |
in_uint8a(s, pst_buf, length); |
490 |
|
491 |
if (add_async_iorequest |
492 |
(device, file, id, major, length, fns, 0, 0, pst_buf, offset)) |
493 |
{ |
494 |
status = STATUS_PENDING; |
495 |
break; |
496 |
} |
497 |
|
498 |
status = STATUS_CANCELLED; |
499 |
break; |
500 |
|
501 |
case IRP_MJ_QUERY_INFORMATION: |
502 |
|
503 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
504 |
{ |
505 |
status = STATUS_INVALID_HANDLE; |
506 |
break; |
507 |
} |
508 |
in_uint32_le(s, info_level); |
509 |
|
510 |
out.data = out.p = buffer; |
511 |
out.size = sizeof(buffer); |
512 |
status = disk_query_information(file, info_level, &out); |
513 |
result = buffer_len = out.p - out.data; |
514 |
|
515 |
break; |
516 |
|
517 |
case IRP_MJ_SET_INFORMATION: |
518 |
|
519 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
520 |
{ |
521 |
status = STATUS_INVALID_HANDLE; |
522 |
break; |
523 |
} |
524 |
|
525 |
in_uint32_le(s, info_level); |
526 |
|
527 |
out.data = out.p = buffer; |
528 |
out.size = sizeof(buffer); |
529 |
status = disk_set_information(file, info_level, s, &out); |
530 |
result = buffer_len = out.p - out.data; |
531 |
break; |
532 |
|
533 |
case IRP_MJ_QUERY_VOLUME_INFORMATION: |
534 |
|
535 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
536 |
{ |
537 |
status = STATUS_INVALID_HANDLE; |
538 |
break; |
539 |
} |
540 |
|
541 |
in_uint32_le(s, info_level); |
542 |
|
543 |
out.data = out.p = buffer; |
544 |
out.size = sizeof(buffer); |
545 |
status = disk_query_volume_information(file, info_level, &out); |
546 |
result = buffer_len = out.p - out.data; |
547 |
break; |
548 |
|
549 |
case IRP_MJ_DIRECTORY_CONTROL: |
550 |
|
551 |
if (g_rdpdr_device[device].device_type != DEVICE_TYPE_DISK) |
552 |
{ |
553 |
status = STATUS_INVALID_HANDLE; |
554 |
break; |
555 |
} |
556 |
|
557 |
switch (minor) |
558 |
{ |
559 |
case IRP_MN_QUERY_DIRECTORY: |
560 |
|
561 |
in_uint32_le(s, info_level); |
562 |
in_uint8s(s, 1); |
563 |
in_uint32_le(s, length); |
564 |
in_uint8s(s, 0x17); |
565 |
if (length && length < 2 * 255) |
566 |
{ |
567 |
rdp_in_unistr(s, filename, length); |
568 |
convert_to_unix_filename(filename); |
569 |
} |
570 |
else |
571 |
{ |
572 |
filename[0] = 0; |
573 |
} |
574 |
out.data = out.p = buffer; |
575 |
out.size = sizeof(buffer); |
576 |
status = disk_query_directory(file, info_level, filename, |
577 |
&out); |
578 |
result = buffer_len = out.p - out.data; |
579 |
if (!buffer_len) |
580 |
buffer_len++; |
581 |
break; |
582 |
|
583 |
case IRP_MN_NOTIFY_CHANGE_DIRECTORY: |
584 |
|
585 |
/* JIF |
586 |
unimpl("IRP major=0x%x minor=0x%x: IRP_MN_NOTIFY_CHANGE_DIRECTORY\n", major, minor); */ |
587 |
status = STATUS_PENDING; // Don't send completion packet |
588 |
break; |
589 |
|
590 |
default: |
591 |
|
592 |
status = STATUS_INVALID_PARAMETER; |
593 |
/* JIF |
594 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); */ |
595 |
} |
596 |
break; |
597 |
|
598 |
case IRP_MJ_DEVICE_CONTROL: |
599 |
|
600 |
if (!fns->device_control) |
601 |
{ |
602 |
status = STATUS_NOT_SUPPORTED; |
603 |
break; |
604 |
} |
605 |
|
606 |
in_uint32_le(s, bytes_out); |
607 |
in_uint32_le(s, bytes_in); |
608 |
in_uint32_le(s, request); |
609 |
in_uint8s(s, 0x14); |
610 |
|
611 |
buffer = (uint8 *) xrealloc((void *) buffer, bytes_out + 0x14); |
612 |
if (!buffer) |
613 |
{ |
614 |
status = STATUS_CANCELLED; |
615 |
break; |
616 |
} |
617 |
|
618 |
out.data = out.p = buffer; |
619 |
out.size = sizeof(buffer); |
620 |
status = fns->device_control(file, request, s, &out); |
621 |
result = buffer_len = out.p - out.data; |
622 |
break; |
623 |
|
624 |
default: |
625 |
unimpl("IRP major=0x%x minor=0x%x\n", major, minor); |
626 |
break; |
627 |
} |
628 |
|
629 |
if (status != STATUS_PENDING) |
630 |
{ |
631 |
rdpdr_send_completion(device, id, status, result, buffer, buffer_len); |
632 |
} |
633 |
if (buffer) |
634 |
xfree(buffer); |
635 |
buffer = NULL; |
636 |
} |
637 |
|
638 |
void |
639 |
rdpdr_send_clientcapabilty(void) |
640 |
{ |
641 |
uint8 magic[4] = "rDPC"; |
642 |
STREAM s; |
643 |
|
644 |
s = channel_init(rdpdr_channel, 0x50); |
645 |
out_uint8a(s, magic, 4); |
646 |
out_uint32_le(s, 5); /* count */ |
647 |
out_uint16_le(s, 1); /* first */ |
648 |
out_uint16_le(s, 0x28); /* length */ |
649 |
out_uint32_le(s, 1); |
650 |
out_uint32_le(s, 2); |
651 |
out_uint16_le(s, 2); |
652 |
out_uint16_le(s, 5); |
653 |
out_uint16_le(s, 1); |
654 |
out_uint16_le(s, 5); |
655 |
out_uint16_le(s, 0xFFFF); |
656 |
out_uint16_le(s, 0); |
657 |
out_uint32_le(s, 0); |
658 |
out_uint32_le(s, 3); |
659 |
out_uint32_le(s, 0); |
660 |
out_uint32_le(s, 0); |
661 |
out_uint16_le(s, 2); /* second */ |
662 |
out_uint16_le(s, 8); /* length */ |
663 |
out_uint32_le(s, 1); |
664 |
out_uint16_le(s, 3); /* third */ |
665 |
out_uint16_le(s, 8); /* length */ |
666 |
out_uint32_le(s, 1); |
667 |
out_uint16_le(s, 4); /* fourth */ |
668 |
out_uint16_le(s, 8); /* length */ |
669 |
out_uint32_le(s, 1); |
670 |
out_uint16_le(s, 5); /* fifth */ |
671 |
out_uint16_le(s, 8); /* length */ |
672 |
out_uint32_le(s, 1); |
673 |
|
674 |
s_mark_end(s); |
675 |
channel_send(s, rdpdr_channel); |
676 |
} |
677 |
|
678 |
static void |
679 |
rdpdr_process(STREAM s) |
680 |
{ |
681 |
uint32 handle; |
682 |
uint8 *magic; |
683 |
|
684 |
#if WITH_DEBUG_RDP5 |
685 |
printf("--- rdpdr_process ---\n"); |
686 |
hexdump(s->p, s->end - s->p); |
687 |
#endif |
688 |
in_uint8p(s, magic, 4); |
689 |
|
690 |
if ((magic[0] == 'r') && (magic[1] == 'D')) |
691 |
{ |
692 |
if ((magic[2] == 'R') && (magic[3] == 'I')) |
693 |
{ |
694 |
rdpdr_process_irp(s); |
695 |
return; |
696 |
} |
697 |
if ((magic[2] == 'n') && (magic[3] == 'I')) |
698 |
{ |
699 |
rdpdr_send_connect(); |
700 |
rdpdr_send_name(); |
701 |
return; |
702 |
} |
703 |
if ((magic[2] == 'C') && (magic[3] == 'C')) |
704 |
{ |
705 |
/* connect from server */ |
706 |
rdpdr_send_clientcapabilty(); |
707 |
rdpdr_send_available(); |
708 |
return; |
709 |
} |
710 |
if ((magic[2] == 'r') && (magic[3] == 'd')) |
711 |
{ |
712 |
/* connect to a specific resource */ |
713 |
in_uint32(s, handle); |
714 |
#if WITH_DEBUG_RDP5 |
715 |
DEBUG(("RDPDR: Server connected to resource %d\n", handle)); |
716 |
#endif |
717 |
return; |
718 |
} |
719 |
if ((magic[2] == 'P') && (magic[3] == 'S')) |
720 |
{ |
721 |
/* server capability */ |
722 |
return; |
723 |
} |
724 |
} |
725 |
if ((magic[0] == 'R') && (magic[1] == 'P')) |
726 |
{ |
727 |
if ((magic[2] == 'C') && (magic[3] == 'P')) |
728 |
{ |
729 |
printercache_process(s); |
730 |
return; |
731 |
} |
732 |
} |
733 |
unimpl("RDPDR packet type %c%c%c%c\n", magic[0], magic[1], magic[2], magic[3]); |
734 |
} |
735 |
|
736 |
BOOL |
737 |
rdpdr_init() |
738 |
{ |
739 |
if (g_num_devices > 0) |
740 |
{ |
741 |
rdpdr_channel = |
742 |
channel_register("rdpdr", |
743 |
CHANNEL_OPTION_INITIALIZED | CHANNEL_OPTION_COMPRESS_RDP, |
744 |
rdpdr_process); |
745 |
} |
746 |
|
747 |
return (rdpdr_channel != NULL); |
748 |
} |
749 |
|
750 |
/* Add file descriptors of pending io request to select() */ |
751 |
void |
752 |
rdpdr_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv, BOOL * timeout) |
753 |
{ |
754 |
uint32 select_timeout = 0; // Timeout value to be used for select() (in millisecons). |
755 |
struct async_iorequest *iorq; |
756 |
|
757 |
iorq = g_iorequest; |
758 |
while (iorq != NULL) |
759 |
{ |
760 |
if (iorq->fd != 0) |
761 |
{ |
762 |
switch (iorq->major) |
763 |
{ |
764 |
case IRP_MJ_READ: |
765 |
|
766 |
FD_SET(iorq->fd, rfds); |
767 |
|
768 |
// Check if io request timeout is smaller than current (but not 0). |
769 |
if (iorq->timeout |
770 |
&& (select_timeout == 0 |
771 |
|| iorq->timeout < select_timeout)) |
772 |
{ |
773 |
// Set new timeout |
774 |
select_timeout = iorq->timeout; |
775 |
g_min_timeout_fd = iorq->fd; /* Remember fd */ |
776 |
tv->tv_sec = select_timeout / 1000; |
777 |
tv->tv_usec = (select_timeout % 1000) * 1000; |
778 |
*timeout = True; |
779 |
} |
780 |
break; |
781 |
|
782 |
case IRP_MJ_WRITE: |
783 |
FD_SET(iorq->fd, wfds); |
784 |
break; |
785 |
|
786 |
} |
787 |
*n = MAX(*n, iorq->fd); |
788 |
} |
789 |
|
790 |
iorq = iorq->next; |
791 |
} |
792 |
} |
793 |
|
794 |
struct async_iorequest * |
795 |
rdpdr_remove_iorequest(struct async_iorequest *prev, struct async_iorequest *iorq) |
796 |
{ |
797 |
if (!iorq) |
798 |
return NULL; |
799 |
|
800 |
if (iorq->buffer) |
801 |
xfree(iorq->buffer); |
802 |
if (prev) |
803 |
{ |
804 |
prev->next = iorq->next; |
805 |
xfree(iorq); |
806 |
iorq = prev->next; |
807 |
} |
808 |
else |
809 |
{ |
810 |
// Even if NULL |
811 |
g_iorequest = iorq->next; |
812 |
xfree(iorq); |
813 |
iorq = NULL; |
814 |
} |
815 |
return iorq; |
816 |
} |
817 |
|
818 |
/* Check if select() returned with one of the rdpdr file descriptors, and complete io if it did */ |
819 |
void |
820 |
rdpdr_check_fds(fd_set * rfds, fd_set * wfds, BOOL timed_out) |
821 |
{ |
822 |
NTSTATUS status; |
823 |
uint32 result = 0; |
824 |
DEVICE_FNS *fns; |
825 |
struct async_iorequest *iorq; |
826 |
struct async_iorequest *prev; |
827 |
uint32 req_size = 0; |
828 |
|
829 |
if (timed_out) |
830 |
{ |
831 |
rdpdr_abort_io(g_min_timeout_fd, 0, STATUS_TIMEOUT); |
832 |
return; |
833 |
} |
834 |
|
835 |
iorq = g_iorequest; |
836 |
prev = NULL; |
837 |
while (iorq != NULL) |
838 |
{ |
839 |
if (iorq->fd != 0) |
840 |
{ |
841 |
switch (iorq->major) |
842 |
{ |
843 |
case IRP_MJ_READ: |
844 |
if (FD_ISSET(iorq->fd, rfds)) |
845 |
{ |
846 |
/* Read the data */ |
847 |
fns = iorq->fns; |
848 |
|
849 |
req_size = |
850 |
(iorq->length - iorq->partial_len) > |
851 |
8192 ? 8192 : (iorq->length - |
852 |
iorq->partial_len); |
853 |
/* never read larger chunks than 8k - chances are that it will block */ |
854 |
status = fns->read(iorq->fd, |
855 |
iorq->buffer + iorq->partial_len, |
856 |
req_size, iorq->offset, &result); |
857 |
|
858 |
if (result > 0) |
859 |
{ |
860 |
iorq->partial_len += result; |
861 |
iorq->offset += result; |
862 |
} |
863 |
#if WITH_DEBUG_RDP5 |
864 |
DEBUG(("RDPDR: %d bytes of data read\n", result)); |
865 |
#endif |
866 |
/* only delete link if all data has been transfered */ |
867 |
/* or if result was 0 and status success - EOF */ |
868 |
if ((iorq->partial_len == iorq->length) || |
869 |
(result == 0)) |
870 |
{ |
871 |
#if WITH_DEBUG_RDP5 |
872 |
DEBUG(("RDPDR: AIO total %u bytes read of %u\n", iorq->partial_len, iorq->length)); |
873 |
#endif |
874 |
rdpdr_send_completion(iorq->device, |
875 |
iorq->id, status, |
876 |
iorq->partial_len, |
877 |
iorq->buffer, |
878 |
iorq->partial_len); |
879 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
880 |
} |
881 |
} |
882 |
break; |
883 |
case IRP_MJ_WRITE: |
884 |
if (FD_ISSET(iorq->fd, wfds)) |
885 |
{ |
886 |
/* Write data. */ |
887 |
fns = iorq->fns; |
888 |
|
889 |
req_size = |
890 |
(iorq->length - iorq->partial_len) > |
891 |
8192 ? 8192 : (iorq->length - |
892 |
iorq->partial_len); |
893 |
|
894 |
/* never write larger chunks than 8k - chances are that it will block */ |
895 |
status = fns->write(iorq->fd, |
896 |
iorq->buffer + |
897 |
iorq->partial_len, req_size, |
898 |
iorq->offset, &result); |
899 |
|
900 |
if (result > 0) |
901 |
{ |
902 |
iorq->partial_len += result; |
903 |
iorq->offset += result; |
904 |
} |
905 |
|
906 |
#if WITH_DEBUG_RDP5 |
907 |
DEBUG(("RDPDR: %d bytes of data written\n", |
908 |
result)); |
909 |
#endif |
910 |
/* only delete link if all data has been transfered */ |
911 |
/* or we couldn't write */ |
912 |
if ((iorq->partial_len == iorq->length) |
913 |
|| (result == 0)) |
914 |
{ |
915 |
#if WITH_DEBUG_RDP5 |
916 |
DEBUG(("RDPDR: AIO total %u bytes written of %u\n", iorq->partial_len, iorq->length)); |
917 |
#endif |
918 |
rdpdr_send_completion(iorq->device, |
919 |
iorq->id, status, |
920 |
iorq->partial_len, |
921 |
(uint8 *) "", 1); |
922 |
|
923 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
924 |
} |
925 |
} |
926 |
break; |
927 |
} |
928 |
|
929 |
} |
930 |
prev = iorq; |
931 |
if (iorq) |
932 |
iorq = iorq->next; |
933 |
} |
934 |
|
935 |
} |
936 |
|
937 |
/* Abort a pending io request for a given handle and major */ |
938 |
BOOL |
939 |
rdpdr_abort_io(uint32 fd, uint32 major, NTSTATUS status) |
940 |
{ |
941 |
uint32 result; |
942 |
struct async_iorequest *iorq; |
943 |
struct async_iorequest *prev; |
944 |
|
945 |
iorq = g_iorequest; |
946 |
prev = NULL; |
947 |
while (iorq != NULL) |
948 |
{ |
949 |
// Only remove from table when major is not set, or when correct major is supplied. |
950 |
// Abort read should not abort a write io request. |
951 |
if ((iorq->fd == fd) && (major == 0 || iorq->major == major)) |
952 |
{ |
953 |
result = 0; |
954 |
rdpdr_send_completion(iorq->device, iorq->id, status, result, (uint8 *) "", |
955 |
1); |
956 |
|
957 |
iorq = rdpdr_remove_iorequest(prev, iorq); |
958 |
return True; |
959 |
} |
960 |
|
961 |
prev = iorq; |
962 |
iorq = iorq->next; |
963 |
} |
964 |
|
965 |
return False; |
966 |
} |