2 Unix SMB/CIFS implementation.
6 Copyright (C) Theodore Ts'o 1996, 1997,
7 Copyright (C) Jim McDonough 2002.
8 Copyright (C) Andrew Tridgell 2003.
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.
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.
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/>.
25 #include "librpc/ndr/libndr.h"
26 #include "librpc/gen_ndr/ndr_misc.h"
29 build a NDR blob from a GUID
31 _PUBLIC_ NTSTATUS GUID_to_ndr_blob(const struct GUID *guid, TALLOC_CTX *mem_ctx, DATA_BLOB *b)
33 enum ndr_err_code ndr_err;
34 ndr_err = ndr_push_struct_blob(b, mem_ctx, guid,
35 (ndr_push_flags_fn_t)ndr_push_GUID);
36 return ndr_map_error2ntstatus(ndr_err);
41 build a GUID from a NDR data blob
43 _PUBLIC_ NTSTATUS GUID_from_ndr_blob(const DATA_BLOB *b, struct GUID *guid)
45 enum ndr_err_code ndr_err;
48 mem_ctx = talloc_new(NULL);
49 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
51 ndr_err = ndr_pull_struct_blob_all(b, mem_ctx, guid,
52 (ndr_pull_flags_fn_t)ndr_pull_GUID);
54 return ndr_map_error2ntstatus(ndr_err);
59 build a GUID from a string
61 _PUBLIC_ NTSTATUS GUID_from_data_blob(const DATA_BLOB *s, struct GUID *guid)
63 NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
65 uint32_t time_mid, time_hi_and_version;
66 uint32_t clock_seq[2];
70 DATA_BLOB blob16 = data_blob_const(buf16, sizeof(buf16));
73 if (s->data == NULL) {
74 return NT_STATUS_INVALID_PARAMETER;
83 mem_ctx = talloc_new(NULL);
84 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
85 string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
86 NT_STATUS_HAVE_NO_MEMORY(string);
87 if (11 == sscanf(string,
88 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
89 &time_low, &time_mid, &time_hi_and_version,
90 &clock_seq[0], &clock_seq[1],
91 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
92 status = NT_STATUS_OK;
102 mem_ctx = talloc_new(NULL);
103 NT_STATUS_HAVE_NO_MEMORY(mem_ctx);
104 string = talloc_strndup(mem_ctx, (const char *)s->data, s->length);
105 NT_STATUS_HAVE_NO_MEMORY(string);
106 if (11 == sscanf((const char *)s->data,
107 "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
108 &time_low, &time_mid, &time_hi_and_version,
109 &clock_seq[0], &clock_seq[1],
110 &node[0], &node[1], &node[2], &node[3], &node[4], &node[5])) {
111 status = NT_STATUS_OK;
113 talloc_free(mem_ctx);
118 size_t rlen = strhex_to_str((char *)blob16.data, blob16.length,
119 (const char *)s->data, s->length);
120 if (rlen != blob16.length) {
121 return NT_STATUS_INVALID_PARAMETER;
125 return GUID_from_ndr_blob(s, guid);
128 return GUID_from_ndr_blob(s, guid);
130 status = NT_STATUS_INVALID_PARAMETER;
134 if (!NT_STATUS_IS_OK(status)) {
138 guid->time_low = time_low;
139 guid->time_mid = time_mid;
140 guid->time_hi_and_version = time_hi_and_version;
141 guid->clock_seq[0] = clock_seq[0];
142 guid->clock_seq[1] = clock_seq[1];
144 guid->node[i] = node[i];
151 build a GUID from a string
153 _PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
155 DATA_BLOB blob = data_blob_string_const(s);
156 return GUID_from_data_blob(&blob, guid);
160 * generate a random GUID
162 _PUBLIC_ struct GUID GUID_random(void)
166 generate_random_buffer((uint8_t *)&guid, sizeof(guid));
167 guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
168 guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
174 * generate an empty GUID
176 _PUBLIC_ struct GUID GUID_zero(void)
185 _PUBLIC_ bool GUID_all_zero(const struct GUID *u)
187 if (u->time_low != 0 ||
189 u->time_hi_and_version != 0 ||
190 u->clock_seq[0] != 0 ||
191 u->clock_seq[1] != 0 ||
192 !all_zero(u->node, 6)) {
198 _PUBLIC_ bool GUID_equal(const struct GUID *u1, const struct GUID *u2)
200 return (GUID_compare(u1, u2) == 0);
203 _PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
205 if (u1->time_low != u2->time_low) {
206 return u1->time_low > u2->time_low ? 1 : -1;
209 if (u1->time_mid != u2->time_mid) {
210 return u1->time_mid > u2->time_mid ? 1 : -1;
213 if (u1->time_hi_and_version != u2->time_hi_and_version) {
214 return u1->time_hi_and_version > u2->time_hi_and_version ? 1 : -1;
217 if (u1->clock_seq[0] != u2->clock_seq[0]) {
218 return u1->clock_seq[0] > u2->clock_seq[0] ? 1 : -1;
221 if (u1->clock_seq[1] != u2->clock_seq[1]) {
222 return u1->clock_seq[1] > u2->clock_seq[1] ? 1 : -1;
225 return memcmp(u1->node, u2->node, 6);
229 its useful to be able to display these in debugging messages
231 _PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
233 return talloc_asprintf(mem_ctx,
234 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
235 guid->time_low, guid->time_mid,
236 guid->time_hi_and_version,
239 guid->node[0], guid->node[1],
240 guid->node[2], guid->node[3],
241 guid->node[4], guid->node[5]);
245 * Does the same without allocating memory, using the structure buffer.
246 * Useful for debug messages, so that you do not have to talloc_free the result
248 _PUBLIC_ char* GUID_buf_string(const struct GUID *guid,
249 struct GUID_txt_buf *dst)
254 snprintf(dst->buf, sizeof(dst->buf),
255 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
256 guid->time_low, guid->time_mid,
257 guid->time_hi_and_version,
260 guid->node[0], guid->node[1],
261 guid->node[2], guid->node[3],
262 guid->node[4], guid->node[5]);
266 _PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
268 char *ret, *s = GUID_string(mem_ctx, guid);
269 ret = talloc_asprintf(mem_ctx, "{%s}", s);
274 _PUBLIC_ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid)
281 tmp_mem = talloc_new(mem_ctx);
285 status = GUID_to_ndr_blob(guid, tmp_mem, &guid_blob);
286 if (!NT_STATUS_IS_OK(status)) {
287 talloc_free(tmp_mem);
291 ret = data_blob_hex_string_upper(mem_ctx, &guid_blob);
292 talloc_free(tmp_mem);
296 _PUBLIC_ bool ndr_policy_handle_empty(const struct policy_handle *h)
298 return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
301 _PUBLIC_ bool ndr_policy_handle_equal(const struct policy_handle *hnd1,
302 const struct policy_handle *hnd2)
304 if (!hnd1 || !hnd2) {
308 return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);