source: trunk/server/librpc/ndr/uuid.c@ 480

Last change on this file since 480 was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 7.9 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 UUID/GUID functions
5
6 Copyright (C) Theodore Ts'o 1996, 1997,
7 Copyright (C) Jim McDonough 2002.
8 Copyright (C) Andrew Tridgell 2003.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22*/
23
24#include "includes.h"
25#include "librpc/ndr/libndr.h"
26#include "librpc/gen_ndr/ndr_misc.h"
27
28/**
29 build a GUID from a string
30*/
31_PUBLIC_ NTSTATUS GUID_from_data_blob(const DATA_BLOB *s, struct GUID *guid)
32{
33 NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
34 uint32_t time_low;
35 uint32_t time_mid, time_hi_and_version;
36 uint32_t clock_seq[2];
37 uint32_t node[6];
38 uint8_t buf16[16];
39
40 DATA_BLOB blob16 = data_blob_const(buf16, sizeof(buf16));
41 int i;
42
43 if (s->data == NULL) {
44 return NT_STATUS_INVALID_PARAMETER;
45 }
46
47 if (s->length == 36) {
48 TALLOC_CTX *mem_ctx;
49 const char *string;
50
51 mem_ctx = talloc_new(NULL);
52 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
53 string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
54 NT_STATUS_HAVE_NO_MEMORY(string);
55 if (11 == sscanf(string,
56 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
57 &time_low, &time_mid, &time_hi_and_version,
58 &clock_seq[0], &clock_seq[1],
59 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
60 status = NT_STATUS_OK;
61 }
62 talloc_free(mem_ctx);
63
64 } else if (s->length == 38) {
65 TALLOC_CTX *mem_ctx;
66 const char *string;
67
68 mem_ctx = talloc_new(NULL);
69 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
70 string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
71 NT_STATUS_HAVE_NO_MEMORY(string);
72 if (11 == sscanf((const char *)s->data,
73 "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
74 &time_low, &time_mid, &time_hi_and_version,
75 &clock_seq[0], &clock_seq[1],
76 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
77 status = NT_STATUS_OK;
78 }
79 talloc_free(mem_ctx);
80
81 } else if (s->length == 32) {
82 size_t rlen = strhex_to_str((char *)blob16.data, blob16.length,
83 (const char *)s->data, s->length);
84 if (rlen == blob16.length) {
85 /* goto the ndr_pull_struct_blob() path */
86 status = NT_STATUS_OK;
87 s = &blob16;
88 }
89 }
90
91 if (s->length == 16) {
92 enum ndr_err_code ndr_err;
93 struct GUID guid2;
94 TALLOC_CTX *mem_ctx;
95
96 mem_ctx = talloc_new(NULL);
97 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
98
99 ndr_err = ndr_pull_struct_blob(s, mem_ctx, NULL, &guid2,
100 (ndr_pull_flags_fn_t)ndr_pull_GUID);
101 talloc_free(mem_ctx);
102 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
103 return ndr_map_error2ntstatus(ndr_err);
104 }
105 *guid = guid2;
106 return NT_STATUS_OK;
107 }
108
109 if (!NT_STATUS_IS_OK(status)) {
110 return status;
111 }
112
113 guid->time_low = time_low;
114 guid->time_mid = time_mid;
115 guid->time_hi_and_version = time_hi_and_version;
116 guid->clock_seq[0] = clock_seq[0];
117 guid->clock_seq[1] = clock_seq[1];
118 for (i=0;i<6;i++) {
119 guid->node[i] = node[i];
120 }
121
122 return NT_STATUS_OK;
123}
124
125/**
126 build a GUID from a string
127*/
128_PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
129{
130 DATA_BLOB blob = data_blob_string_const(s);
131 return GUID_from_data_blob(&blob, guid);
132 return NT_STATUS_OK;
133}
134
135/**
136 build a GUID from a string
137*/
138_PUBLIC_ NTSTATUS NS_GUID_from_string(const char *s, struct GUID *guid)
139{
140 NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
141 uint32_t time_low;
142 uint32_t time_mid, time_hi_and_version;
143 uint32_t clock_seq[2];
144 uint32_t node[6];
145 int i;
146
147 if (s == NULL) {
148 return NT_STATUS_INVALID_PARAMETER;
149 }
150
151 if (11 == sscanf(s, "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
152 &time_low, &time_mid, &time_hi_and_version,
153 &clock_seq[0], &clock_seq[1],
154 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
155 status = NT_STATUS_OK;
156 }
157
158 if (!NT_STATUS_IS_OK(status)) {
159 return status;
160 }
161
162 guid->time_low = time_low;
163 guid->time_mid = time_mid;
164 guid->time_hi_and_version = time_hi_and_version;
165 guid->clock_seq[0] = clock_seq[0];
166 guid->clock_seq[1] = clock_seq[1];
167 for (i=0;i<6;i++) {
168 guid->node[i] = node[i];
169 }
170
171 return NT_STATUS_OK;
172}
173
174/**
175 * generate a random GUID
176 */
177_PUBLIC_ struct GUID GUID_random(void)
178{
179 struct GUID guid;
180
181 generate_random_buffer((uint8_t *)&guid, sizeof(guid));
182 guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
183 guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
184
185 return guid;
186}
187
188/**
189 * generate an empty GUID
190 */
191_PUBLIC_ struct GUID GUID_zero(void)
192{
193 struct GUID guid;
194
195 ZERO_STRUCT(guid);
196
197 return guid;
198}
199
200_PUBLIC_ bool GUID_all_zero(const struct GUID *u)
201{
202 if (u->time_low != 0 ||
203 u->time_mid != 0 ||
204 u->time_hi_and_version != 0 ||
205 u->clock_seq[0] != 0 ||
206 u->clock_seq[1] != 0 ||
207 !all_zero(u->node, 6)) {
208 return false;
209 }
210 return true;
211}
212
213_PUBLIC_ bool GUID_equal(const struct GUID *u1, const struct GUID *u2)
214{
215 if (u1->time_low != u2->time_low ||
216 u1->time_mid != u2->time_mid ||
217 u1->time_hi_and_version != u2->time_hi_and_version ||
218 u1->clock_seq[0] != u2->clock_seq[0] ||
219 u1->clock_seq[1] != u2->clock_seq[1] ||
220 memcmp(u1->node, u2->node, 6) != 0) {
221 return false;
222 }
223 return true;
224}
225
226_PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
227{
228 if (u1->time_low != u2->time_low) {
229 return u1->time_low - u2->time_low;
230 }
231
232 if (u1->time_mid != u2->time_mid) {
233 return u1->time_mid - u2->time_mid;
234 }
235
236 if (u1->time_hi_and_version != u2->time_hi_and_version) {
237 return u1->time_hi_and_version - u2->time_hi_and_version;
238 }
239
240 if (u1->clock_seq[0] != u2->clock_seq[0]) {
241 return u1->clock_seq[0] - u2->clock_seq[0];
242 }
243
244 if (u1->clock_seq[1] != u2->clock_seq[1]) {
245 return u1->clock_seq[1] - u2->clock_seq[1];
246 }
247
248 return memcmp(u1->node, u2->node, 6);
249}
250
251/**
252 its useful to be able to display these in debugging messages
253*/
254_PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
255{
256 return talloc_asprintf(mem_ctx,
257 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
258 guid->time_low, guid->time_mid,
259 guid->time_hi_and_version,
260 guid->clock_seq[0],
261 guid->clock_seq[1],
262 guid->node[0], guid->node[1],
263 guid->node[2], guid->node[3],
264 guid->node[4], guid->node[5]);
265}
266
267_PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
268{
269 char *ret, *s = GUID_string(mem_ctx, guid);
270 ret = talloc_asprintf(mem_ctx, "{%s}", s);
271 talloc_free(s);
272 return ret;
273}
274
275_PUBLIC_ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid)
276{
277 char *ret;
278 DATA_BLOB guid_blob;
279 enum ndr_err_code ndr_err;
280 TALLOC_CTX *tmp_mem;
281
282 tmp_mem = talloc_new(mem_ctx);
283 if (!tmp_mem) {
284 return NULL;
285 }
286 ndr_err = ndr_push_struct_blob(&guid_blob, tmp_mem,
287 NULL,
288 guid,
289 (ndr_push_flags_fn_t)ndr_push_GUID);
290 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
291 talloc_free(tmp_mem);
292 return NULL;
293 }
294
295 ret = data_blob_hex_string(mem_ctx, &guid_blob);
296 talloc_free(tmp_mem);
297 return ret;
298}
299
300_PUBLIC_ char *NS_GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
301{
302 return talloc_asprintf(mem_ctx,
303 "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
304 guid->time_low, guid->time_mid,
305 guid->time_hi_and_version,
306 guid->clock_seq[0],
307 guid->clock_seq[1],
308 guid->node[0], guid->node[1],
309 guid->node[2], guid->node[3],
310 guid->node[4], guid->node[5]);
311}
312
313_PUBLIC_ bool policy_handle_empty(struct policy_handle *h)
314{
315 return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
316}
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