source: branches/samba-3.3.x/source/librpc/tools/ndrdump.c

Last change on this file was 206, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.0.0 level (psmedley's port)
File size: 10.5 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 SMB torture tester
4 Copyright (C) Andrew Tridgell 2003
5 Copyright (C) Jelmer Vernooij 2006
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#include "includes.h"
22#if (_SAMBA_BUILD_ >= 4)
23#include "lib/cmdline/popt_common.h"
24#include "system/filesys.h"
25#include "system/locale.h"
26#include "librpc/rpc/dcerpc.h"
27#include "librpc/rpc/dcerpc_table.h"
28#endif
29
30static const struct ndr_interface_call *find_function(
31 const struct ndr_interface_table *p,
32 const char *function)
33{
34 int i;
35 if (isdigit(function[0])) {
36 i = strtol(function, NULL, 0);
37 return &p->calls[i];
38 }
39 for (i=0;i<p->num_calls;i++) {
40 if (strcmp(p->calls[i].name, function) == 0) {
41 break;
42 }
43 }
44 if (i == p->num_calls) {
45 printf("Function '%s' not found\n", function);
46 exit(1);
47 }
48 return &p->calls[i];
49}
50
51#if (_SAMBA_BUILD_ >= 4)
52
53static void show_pipes(void)
54{
55 const struct ndr_interface_list *l;
56 printf("\nYou must specify a pipe\n");
57 printf("known pipes are:\n");
58 for (l=librpc_dcerpc_pipes();l;l=l->next) {
59 if(l->table->helpstring) {
60 printf("\t%s - %s\n", l->table->name, l->table->helpstring);
61 } else {
62 printf("\t%s\n", l->table->name);
63 }
64 }
65 exit(1);
66}
67
68#endif
69
70static void show_functions(const struct ndr_interface_table *p)
71{
72 int i;
73 printf("\nYou must specify a function\n");
74 printf("known functions on '%s' are:\n", p->name);
75 for (i=0;i<p->num_calls;i++) {
76 printf("\t0x%02x (%2d) %s\n", i, i, p->calls[i].name);
77 }
78 exit(1);
79}
80
81static char *stdin_load(TALLOC_CTX *mem_ctx, size_t *size)
82{
83 int num_read, total_len = 0;
84 char buf[255];
85 char *result = NULL;
86
87 while((num_read = read(STDIN_FILENO, buf, 255)) > 0) {
88
89 if (result) {
90 result = (char *) talloc_realloc(
91 mem_ctx, result, char *, total_len + num_read);
92 } else {
93 result = (char *) talloc_size(mem_ctx, num_read);
94 }
95
96 memcpy(result + total_len, buf, num_read);
97
98 total_len += num_read;
99 }
100
101 if (size)
102 *size = total_len;
103
104 return result;
105}
106
107static const struct ndr_interface_table *load_iface_from_plugin(const char *plugin, const char *pipe_name)
108{
109 const struct ndr_interface_table *p;
110 void *handle;
111 char *symbol;
112
113 handle = dlopen(plugin, RTLD_NOW);
114 if (handle == NULL) {
115 printf("%s: Unable to open: %s\n", plugin, dlerror());
116 return NULL;
117 }
118
119 symbol = talloc_asprintf(NULL, "ndr_table_%s", pipe_name);
120 p = (const struct ndr_interface_table *)dlsym(handle, symbol);
121
122 if (!p) {
123 printf("%s: Unable to find DCE/RPC interface table for '%s': %s\n", plugin, pipe_name, dlerror());
124 talloc_free(symbol);
125 return NULL;
126 }
127
128 talloc_free(symbol);
129
130 return p;
131}
132
133 int main(int argc, const char *argv[])
134{
135 const struct ndr_interface_table *p = NULL;
136 const struct ndr_interface_call *f;
137 const char *pipe_name, *function, *inout, *filename;
138 uint8_t *data;
139 size_t size;
140 DATA_BLOB blob;
141 struct ndr_pull *ndr_pull;
142 struct ndr_print *ndr_print;
143 TALLOC_CTX *mem_ctx;
144 int flags;
145 poptContext pc;
146 NTSTATUS status;
147 enum ndr_err_code ndr_err;
148 void *st;
149 void *v_st;
150 const char *ctx_filename = NULL;
151 const char *plugin = NULL;
152 bool validate = false;
153 bool dumpdata = false;
154 int opt;
155 enum {OPT_CONTEXT_FILE=1000, OPT_VALIDATE, OPT_DUMP_DATA, OPT_LOAD_DSO};
156 struct poptOption long_options[] = {
157 POPT_AUTOHELP
158 {"context-file", 'c', POPT_ARG_STRING, NULL, OPT_CONTEXT_FILE, "In-filename to parse first", "CTX-FILE" },
159 {"validate", 0, POPT_ARG_NONE, NULL, OPT_VALIDATE, "try to validate the data", NULL },
160 {"dump-data", 0, POPT_ARG_NONE, NULL, OPT_DUMP_DATA, "dump the hex data", NULL },
161 {"load-dso", 'l', POPT_ARG_STRING, NULL, OPT_LOAD_DSO, "load from shared object file", NULL },
162 POPT_COMMON_SAMBA
163 POPT_COMMON_VERSION
164 { NULL }
165 };
166
167#if (_SAMBA_BUILD_ >= 4)
168 ndr_table_init();
169#else
170 /* Initialise samba stuff */
171 load_case_tables();
172
173 setlinebuf(stdout);
174
175 dbf = x_stderr;
176
177 setup_logging(argv[0],True);
178#endif
179
180 pc = poptGetContext("ndrdump", argc, argv, long_options, 0);
181
182 poptSetOtherOptionHelp(
183 pc, "<pipe|uuid> <function> <inout> [<filename>]");
184
185 while ((opt = poptGetNextOpt(pc)) != -1) {
186 switch (opt) {
187 case OPT_CONTEXT_FILE:
188 ctx_filename = poptGetOptArg(pc);
189 break;
190 case OPT_VALIDATE:
191 validate = true;
192 break;
193 case OPT_DUMP_DATA:
194 dumpdata = true;
195 break;
196 case OPT_LOAD_DSO:
197 plugin = poptGetOptArg(pc);
198 break;
199 }
200 }
201
202 pipe_name = poptGetArg(pc);
203
204 if (!pipe_name) {
205 poptPrintUsage(pc, stderr, 0);
206#if (_SAMBA_BUILD_ >= 4)
207 show_pipes();
208#endif
209 exit(1);
210 }
211
212 if (plugin != NULL) {
213 p = load_iface_from_plugin(plugin, pipe_name);
214 }
215#if (_SAMBA_BUILD_ <= 3)
216 else {
217 fprintf(stderr, "Only loading from DSO's supported in Samba 3\n");
218 exit(1);
219 }
220#else
221 if (!p) {
222 p = idl_iface_by_name(pipe_name);
223 }
224
225 if (!p) {
226 struct GUID uuid;
227
228 status = GUID_from_string(pipe_name, &uuid);
229
230 if (NT_STATUS_IS_OK(status)) {
231 p = idl_iface_by_uuid(&uuid);
232 }
233 }
234#endif
235
236 if (!p) {
237 printf("Unknown pipe or UUID '%s'\n", pipe_name);
238 exit(1);
239 }
240
241 function = poptGetArg(pc);
242 inout = poptGetArg(pc);
243 filename = poptGetArg(pc);
244
245 if (!function || !inout) {
246 poptPrintUsage(pc, stderr, 0);
247 show_functions(p);
248 exit(1);
249 }
250
251 if (strcmp(inout, "in") == 0 ||
252 strcmp(inout, "request") == 0) {
253 flags = NDR_IN;
254 } else if (strcmp(inout, "out") == 0 ||
255 strcmp(inout, "response") == 0) {
256 flags = NDR_OUT;
257 } else {
258 printf("Bad inout value '%s'\n", inout);
259 exit(1);
260 }
261
262 f = find_function(p, function);
263
264 mem_ctx = talloc_init("ndrdump");
265
266 st = talloc_zero_size(mem_ctx, f->struct_size);
267 if (!st) {
268 printf("Unable to allocate %d bytes\n", (int)f->struct_size);
269 exit(1);
270 }
271
272 v_st = talloc_zero_size(mem_ctx, f->struct_size);
273 if (!v_st) {
274 printf("Unable to allocate %d bytes\n", (int)f->struct_size);
275 exit(1);
276 }
277
278 if (ctx_filename) {
279 if (flags == NDR_IN) {
280 printf("Context file can only be used for \"out\" packages\n");
281 exit(1);
282 }
283
284#if (_SAMBA_BUILD_ >= 4)
285 data = (uint8_t *)file_load(ctx_filename, &size, mem_ctx);
286#else
287 data = (uint8_t *)file_load(ctx_filename, &size, 0);
288#endif
289 if (!data) {
290 perror(ctx_filename);
291 exit(1);
292 }
293
294 blob.data = data;
295 blob.length = size;
296
297 ndr_pull = ndr_pull_init_blob(&blob, mem_ctx);
298 ndr_pull->flags |= LIBNDR_FLAG_REF_ALLOC;
299
300 ndr_err = f->ndr_pull(ndr_pull, NDR_IN, st);
301
302 if (ndr_pull->offset != ndr_pull->data_size) {
303 printf("WARNING! %d unread bytes while parsing context file\n", ndr_pull->data_size - ndr_pull->offset);
304 }
305
306 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
307 status = ndr_map_error2ntstatus(ndr_err);
308 printf("pull for context file returned %s\n", nt_errstr(status));
309 exit(1);
310 }
311 memcpy(v_st, st, f->struct_size);
312 }
313
314 if (filename)
315#if (_SAMBA_BUILD_ >= 4)
316 data = (uint8_t *)file_load(filename, &size, mem_ctx);
317#else
318 data = (uint8_t *)file_load(filename, &size, 0);
319#endif
320 else
321 data = (uint8_t *)stdin_load(mem_ctx, &size);
322
323 if (!data) {
324 if (filename)
325 perror(filename);
326 else
327 perror("stdin");
328 exit(1);
329 }
330
331 blob.data = data;
332 blob.length = size;
333
334 ndr_pull = ndr_pull_init_blob(&blob, mem_ctx);
335 ndr_pull->flags |= LIBNDR_FLAG_REF_ALLOC;
336
337 ndr_err = f->ndr_pull(ndr_pull, flags, st);
338 status = ndr_map_error2ntstatus(ndr_err);
339
340 printf("pull returned %s\n", nt_errstr(status));
341
342 if (ndr_pull->offset != ndr_pull->data_size) {
343 printf("WARNING! %d unread bytes\n", ndr_pull->data_size - ndr_pull->offset);
344 dump_data(0, ndr_pull->data+ndr_pull->offset, ndr_pull->data_size - ndr_pull->offset);
345 }
346
347 if (dumpdata) {
348 printf("%d bytes consumed\n", ndr_pull->offset);
349 dump_data(0, blob.data, blob.length);
350 }
351
352 ndr_print = talloc_zero(mem_ctx, struct ndr_print);
353 ndr_print->print = ndr_print_debug_helper;
354 ndr_print->depth = 1;
355 f->ndr_print(ndr_print, function, flags, st);
356
357 if (!NT_STATUS_IS_OK(status)) {
358 printf("dump FAILED\n");
359 exit(1);
360 }
361
362 if (validate) {
363 DATA_BLOB v_blob;
364 struct ndr_push *ndr_v_push;
365 struct ndr_pull *ndr_v_pull;
366 struct ndr_print *ndr_v_print;
367 uint32_t i;
368 uint8_t byte_a, byte_b;
369 bool differ;
370
371 ndr_v_push = ndr_push_init_ctx(mem_ctx);
372
373 ndr_err = f->ndr_push(ndr_v_push, flags, st);
374 status = ndr_map_error2ntstatus(ndr_err);
375 printf("push returned %s\n", nt_errstr(status));
376 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
377 printf("validate push FAILED\n");
378 exit(1);
379 }
380
381 v_blob = ndr_push_blob(ndr_v_push);
382
383 if (dumpdata) {
384 printf("%ld bytes generated (validate)\n", (long)v_blob.length);
385 dump_data(0, v_blob.data, v_blob.length);
386 }
387
388 ndr_v_pull = ndr_pull_init_blob(&v_blob, mem_ctx);
389 ndr_v_pull->flags |= LIBNDR_FLAG_REF_ALLOC;
390
391 ndr_err = f->ndr_pull(ndr_v_pull, flags, v_st);
392 status = ndr_map_error2ntstatus(ndr_err);
393 printf("pull returned %s\n", nt_errstr(status));
394 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
395 printf("validate pull FAILED\n");
396 exit(1);
397 }
398
399
400 if (ndr_v_pull->offset != ndr_v_pull->data_size) {
401 printf("WARNING! %d unread bytes in validation\n", ndr_v_pull->data_size - ndr_v_pull->offset);
402 dump_data(0, ndr_v_pull->data+ndr_v_pull->offset, ndr_v_pull->data_size - ndr_v_pull->offset);
403 }
404
405 ndr_v_print = talloc_zero(mem_ctx, struct ndr_print);
406 ndr_v_print->print = ndr_print_debug_helper;
407 ndr_v_print->depth = 1;
408 f->ndr_print(ndr_v_print, function, flags, v_st);
409
410 if (blob.length != v_blob.length) {
411 printf("WARNING! orig bytes:%u validated pushed "
412 "bytes:%u\n", (unsigned int)blob.length,
413 (unsigned int)v_blob.length);
414 }
415
416 if (ndr_pull->offset != ndr_v_pull->offset) {
417 printf("WARNING! orig pulled bytes:%u validated pulled bytes:%u\n", ndr_pull->offset, ndr_v_pull->offset);
418 }
419
420 differ = false;
421 byte_a = 0x00;
422 byte_b = 0x00;
423 for (i=0; i < blob.length; i++) {
424 byte_a = blob.data[i];
425
426 if (i == v_blob.length) {
427 byte_b = 0x00;
428 differ = true;
429 break;
430 }
431
432 byte_b = v_blob.data[i];
433
434 if (byte_a != byte_b) {
435 differ = true;
436 break;
437 }
438 }
439 if (differ) {
440 printf("WARNING! orig and validated differ at byte 0x%02X (%u)\n", i, i);
441 printf("WARNING! orig byte[0x%02X] = 0x%02X validated byte[0x%02X] = 0x%02X\n",
442 i, byte_a, i, byte_b);
443 }
444 }
445
446 printf("dump OK\n");
447
448 talloc_free(mem_ctx);
449
450 poptFreeContext(pc);
451
452 return 0;
453}
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