source: branches/samba-3.5.x/librpc/ndr/uuid.c@ 778

Last change on this file since 778 was 590, checked in by Herwig Bauernfeind, 14 years ago

Samba 3.5: Update trunk to 3.5.6
File size: 8.3 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/**
30 build a GUID from a NDR data blob
31*/
32_PUBLIC_ NTSTATUS GUID_from_ndr_blob(const DATA_BLOB *b, struct GUID *guid)
33{
34 enum ndr_err_code ndr_err;
35 TALLOC_CTX *mem_ctx;
36
37 mem_ctx = talloc_new(NULL);
38 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
39
40 ndr_err = ndr_pull_struct_blob_all(b, mem_ctx, NULL, guid,
41 (ndr_pull_flags_fn_t)ndr_pull_GUID);
42 talloc_free(mem_ctx);
43 return ndr_map_error2ntstatus(ndr_err);
44}
45
46
47/**
48 build a GUID from a string
49*/
50_PUBLIC_ NTSTATUS GUID_from_data_blob(const DATA_BLOB *s, struct GUID *guid)
51{
52 NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
53 uint32_t time_low;
54 uint32_t time_mid, time_hi_and_version;
55 uint32_t clock_seq[2];
56 uint32_t node[6];
57 uint8_t buf16[16];
58
59 DATA_BLOB blob16 = data_blob_const(buf16, sizeof(buf16));
60 int i;
61
62 if (s->data == NULL) {
63 return NT_STATUS_INVALID_PARAMETER;
64 }
65
66 if (s->length == 36) {
67 TALLOC_CTX *mem_ctx;
68 const char *string;
69
70 mem_ctx = talloc_new(NULL);
71 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
72 string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
73 NT_STATUS_HAVE_NO_MEMORY(string);
74 if (11 == sscanf(string,
75 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
76 &time_low, &time_mid, &time_hi_and_version,
77 &clock_seq[0], &clock_seq[1],
78 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
79 status = NT_STATUS_OK;
80 }
81 talloc_free(mem_ctx);
82
83 } else if (s->length == 38) {
84 TALLOC_CTX *mem_ctx;
85 const char *string;
86
87 mem_ctx = talloc_new(NULL);
88 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
89 string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
90 NT_STATUS_HAVE_NO_MEMORY(string);
91 if (11 == sscanf((const char *)s->data,
92 "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
93 &time_low, &time_mid, &time_hi_and_version,
94 &clock_seq[0], &clock_seq[1],
95 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
96 status = NT_STATUS_OK;
97 }
98 talloc_free(mem_ctx);
99
100 } else if (s->length == 32) {
101 size_t rlen = strhex_to_str((char *)blob16.data, blob16.length,
102 (const char *)s->data, s->length);
103 if (rlen != blob16.length) {
104 return NT_STATUS_INVALID_PARAMETER;
105 }
106
107 s = &blob16;
108 return GUID_from_ndr_blob(s, guid);
109 }
110
111 if (s->length == 16) {
112 return GUID_from_ndr_blob(s, guid);
113 }
114
115 if (!NT_STATUS_IS_OK(status)) {
116 return status;
117 }
118
119 guid->time_low = time_low;
120 guid->time_mid = time_mid;
121 guid->time_hi_and_version = time_hi_and_version;
122 guid->clock_seq[0] = clock_seq[0];
123 guid->clock_seq[1] = clock_seq[1];
124 for (i=0;i<6;i++) {
125 guid->node[i] = node[i];
126 }
127
128 return NT_STATUS_OK;
129}
130
131/**
132 build a GUID from a string
133*/
134_PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
135{
136 DATA_BLOB blob = data_blob_string_const(s);
137 return GUID_from_data_blob(&blob, guid);
138 return NT_STATUS_OK;
139}
140
141/**
142 build a GUID from a string
143*/
144_PUBLIC_ NTSTATUS NS_GUID_from_string(const char *s, struct GUID *guid)
145{
146 NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
147 uint32_t time_low;
148 uint32_t time_mid, time_hi_and_version;
149 uint32_t clock_seq[2];
150 uint32_t node[6];
151 int i;
152
153 if (s == NULL) {
154 return NT_STATUS_INVALID_PARAMETER;
155 }
156
157 if (11 == sscanf(s, "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
158 &time_low, &time_mid, &time_hi_and_version,
159 &clock_seq[0], &clock_seq[1],
160 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
161 status = NT_STATUS_OK;
162 }
163
164 if (!NT_STATUS_IS_OK(status)) {
165 return status;
166 }
167
168 guid->time_low = time_low;
169 guid->time_mid = time_mid;
170 guid->time_hi_and_version = time_hi_and_version;
171 guid->clock_seq[0] = clock_seq[0];
172 guid->clock_seq[1] = clock_seq[1];
173 for (i=0;i<6;i++) {
174 guid->node[i] = node[i];
175 }
176
177 return NT_STATUS_OK;
178}
179
180/**
181 * generate a random GUID
182 */
183_PUBLIC_ struct GUID GUID_random(void)
184{
185 struct GUID guid;
186
187 generate_random_buffer((uint8_t *)&guid, sizeof(guid));
188 guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
189 guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
190
191 return guid;
192}
193
194/**
195 * generate an empty GUID
196 */
197_PUBLIC_ struct GUID GUID_zero(void)
198{
199 struct GUID guid;
200
201 ZERO_STRUCT(guid);
202
203 return guid;
204}
205
206_PUBLIC_ bool GUID_all_zero(const struct GUID *u)
207{
208 if (u->time_low != 0 ||
209 u->time_mid != 0 ||
210 u->time_hi_and_version != 0 ||
211 u->clock_seq[0] != 0 ||
212 u->clock_seq[1] != 0 ||
213 !all_zero(u->node, 6)) {
214 return false;
215 }
216 return true;
217}
218
219_PUBLIC_ bool GUID_equal(const struct GUID *u1, const struct GUID *u2)
220{
221 if (u1->time_low != u2->time_low ||
222 u1->time_mid != u2->time_mid ||
223 u1->time_hi_and_version != u2->time_hi_and_version ||
224 u1->clock_seq[0] != u2->clock_seq[0] ||
225 u1->clock_seq[1] != u2->clock_seq[1] ||
226 memcmp(u1->node, u2->node, 6) != 0) {
227 return false;
228 }
229 return true;
230}
231
232_PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
233{
234 if (u1->time_low != u2->time_low) {
235 return u1->time_low - u2->time_low;
236 }
237
238 if (u1->time_mid != u2->time_mid) {
239 return u1->time_mid - u2->time_mid;
240 }
241
242 if (u1->time_hi_and_version != u2->time_hi_and_version) {
243 return u1->time_hi_and_version - u2->time_hi_and_version;
244 }
245
246 if (u1->clock_seq[0] != u2->clock_seq[0]) {
247 return u1->clock_seq[0] - u2->clock_seq[0];
248 }
249
250 if (u1->clock_seq[1] != u2->clock_seq[1]) {
251 return u1->clock_seq[1] - u2->clock_seq[1];
252 }
253
254 return memcmp(u1->node, u2->node, 6);
255}
256
257/**
258 its useful to be able to display these in debugging messages
259*/
260_PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
261{
262 return talloc_asprintf(mem_ctx,
263 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
264 guid->time_low, guid->time_mid,
265 guid->time_hi_and_version,
266 guid->clock_seq[0],
267 guid->clock_seq[1],
268 guid->node[0], guid->node[1],
269 guid->node[2], guid->node[3],
270 guid->node[4], guid->node[5]);
271}
272
273_PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
274{
275 char *ret, *s = GUID_string(mem_ctx, guid);
276 ret = talloc_asprintf(mem_ctx, "{%s}", s);
277 talloc_free(s);
278 return ret;
279}
280
281_PUBLIC_ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid)
282{
283 char *ret;
284 DATA_BLOB guid_blob;
285 enum ndr_err_code ndr_err;
286 TALLOC_CTX *tmp_mem;
287
288 tmp_mem = talloc_new(mem_ctx);
289 if (!tmp_mem) {
290 return NULL;
291 }
292 ndr_err = ndr_push_struct_blob(&guid_blob, tmp_mem,
293 NULL,
294 guid,
295 (ndr_push_flags_fn_t)ndr_push_GUID);
296 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
297 talloc_free(tmp_mem);
298 return NULL;
299 }
300
301 ret = data_blob_hex_string(mem_ctx, &guid_blob);
302 talloc_free(tmp_mem);
303 return ret;
304}
305
306_PUBLIC_ char *NS_GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
307{
308 return talloc_asprintf(mem_ctx,
309 "%08x-%04x%04x-%02x%02x%02x%02x-%02x%02x%02x%02x",
310 guid->time_low, guid->time_mid,
311 guid->time_hi_and_version,
312 guid->clock_seq[0],
313 guid->clock_seq[1],
314 guid->node[0], guid->node[1],
315 guid->node[2], guid->node[3],
316 guid->node[4], guid->node[5]);
317}
318
319_PUBLIC_ bool policy_handle_empty(struct policy_handle *h)
320{
321 return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
322}
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