Line data Source code
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 "replace.h"
25 : #include "lib/util/samba_util.h"
26 : #include "lib/util/genrand.h"
27 : #include "librpc/ndr/libndr.h"
28 : #include "librpc/gen_ndr/ndr_misc.h"
29 : #include "lib/util/util_str_hex.h"
30 :
31 72328693 : _PUBLIC_ NTSTATUS GUID_to_ndr_buf(
32 : const struct GUID *guid, struct GUID_ndr_buf *buf)
33 : {
34 72328693 : DATA_BLOB b = { .data = buf->buf, .length = sizeof(buf->buf), };
35 : enum ndr_err_code ndr_err;
36 :
37 72328693 : ndr_err = ndr_push_struct_into_fixed_blob(
38 : &b, guid, (ndr_push_flags_fn_t)ndr_push_GUID);
39 72328693 : return ndr_map_error2ntstatus(ndr_err);
40 : }
41 :
42 : /**
43 : build a NDR blob from a GUID
44 : */
45 72305545 : _PUBLIC_ NTSTATUS GUID_to_ndr_blob(const struct GUID *guid, TALLOC_CTX *mem_ctx, DATA_BLOB *b)
46 : {
47 72305545 : struct GUID_ndr_buf buf = { .buf = {0}, };
48 : NTSTATUS status;
49 :
50 72305545 : status = GUID_to_ndr_buf(guid, &buf);
51 72305545 : if (!NT_STATUS_IS_OK(status)) {
52 0 : return status;
53 : }
54 :
55 72305545 : *b = data_blob_talloc(mem_ctx, buf.buf, sizeof(buf.buf));
56 72305545 : if (b->data == NULL) {
57 0 : return NT_STATUS_NO_MEMORY;
58 : }
59 72305545 : return NT_STATUS_OK;
60 : }
61 :
62 :
63 : /**
64 : build a GUID from a NDR data blob
65 : */
66 160124928 : _PUBLIC_ NTSTATUS GUID_from_ndr_blob(const DATA_BLOB *b, struct GUID *guid)
67 : {
68 120568983 : enum ndr_err_code ndr_err =
69 39555945 : ndr_pull_struct_blob_all_noalloc(b, guid,
70 : (ndr_pull_flags_fn_t)ndr_pull_GUID);
71 160124928 : return ndr_map_error2ntstatus(ndr_err);
72 : }
73 :
74 :
75 : /**
76 : build a GUID from a string
77 : */
78 81119066 : _PUBLIC_ NTSTATUS GUID_from_data_blob(const DATA_BLOB *s, struct GUID *guid)
79 : {
80 : bool ok;
81 :
82 81119066 : if (s->data == NULL) {
83 0 : return NT_STATUS_INVALID_PARAMETER;
84 : }
85 :
86 81119066 : if (s->length == 36) {
87 79891757 : ok = parse_guid_string((char *)s->data, guid);
88 79891757 : return ok ? NT_STATUS_OK : NT_STATUS_INVALID_PARAMETER;
89 : }
90 :
91 1227309 : if (s->length == 38) {
92 1054 : if (s->data[0] != '{' || s->data[37] != '}') {
93 0 : return NT_STATUS_INVALID_PARAMETER;
94 : }
95 1054 : ok = parse_guid_string((char *)s->data + 1, guid);
96 1054 : return ok ? NT_STATUS_OK : NT_STATUS_INVALID_PARAMETER;
97 : }
98 :
99 1226255 : if (s->length == 32) {
100 0 : uint8_t buf16[16] = {0};
101 0 : DATA_BLOB blob16 = { .data = buf16, .length = sizeof(buf16) };
102 0 : size_t rlen = strhex_to_str((char *)blob16.data, blob16.length,
103 0 : (const char *)s->data, s->length);
104 0 : if (rlen != blob16.length) {
105 0 : return NT_STATUS_INVALID_PARAMETER;
106 : }
107 :
108 0 : return GUID_from_ndr_blob(&blob16, guid);
109 : }
110 :
111 1226255 : if (s->length == 16) {
112 1226247 : return GUID_from_ndr_blob(s, guid);
113 : }
114 :
115 8 : return NT_STATUS_INVALID_PARAMETER;
116 : }
117 :
118 : /**
119 : build a GUID from a string
120 : */
121 1334477 : _PUBLIC_ NTSTATUS GUID_from_string(const char *s, struct GUID *guid)
122 : {
123 1334477 : DATA_BLOB blob = data_blob_string_const(s);
124 1334477 : return GUID_from_data_blob(&blob, guid);
125 : }
126 :
127 : /**
128 : * generate a random GUID
129 : */
130 972997 : _PUBLIC_ struct GUID GUID_random(void)
131 : {
132 : struct GUID guid;
133 :
134 972997 : generate_random_buffer((uint8_t *)&guid, sizeof(guid));
135 972997 : guid.clock_seq[0] = (guid.clock_seq[0] & 0x3F) | 0x80;
136 972997 : guid.time_hi_and_version = (guid.time_hi_and_version & 0x0FFF) | 0x4000;
137 :
138 972997 : return guid;
139 : }
140 :
141 : /**
142 : * generate an empty GUID
143 : */
144 45613891 : _PUBLIC_ struct GUID GUID_zero(void)
145 : {
146 45613891 : return (struct GUID) { .time_low = 0 };
147 : }
148 :
149 58128392 : _PUBLIC_ bool GUID_all_zero(const struct GUID *u)
150 : {
151 65901975 : if (u->time_low != 0 ||
152 16897153 : u->time_mid != 0 ||
153 16897153 : u->time_hi_and_version != 0 ||
154 16851766 : u->clock_seq[0] != 0 ||
155 16793546 : u->clock_seq[1] != 0 ||
156 9065350 : !all_zero(u->node, 6)) {
157 49063042 : return false;
158 : }
159 9065350 : return true;
160 : }
161 :
162 29545318 : _PUBLIC_ bool GUID_equal(const struct GUID *u1, const struct GUID *u2)
163 : {
164 29545318 : return (GUID_compare(u1, u2) == 0);
165 : }
166 :
167 40747019 : _PUBLIC_ int GUID_compare(const struct GUID *u1, const struct GUID *u2)
168 : {
169 40747019 : if (u1->time_low != u2->time_low) {
170 36126657 : return u1->time_low > u2->time_low ? 1 : -1;
171 : }
172 :
173 4620362 : if (u1->time_mid != u2->time_mid) {
174 2849 : return u1->time_mid > u2->time_mid ? 1 : -1;
175 : }
176 :
177 4617513 : if (u1->time_hi_and_version != u2->time_hi_and_version) {
178 0 : return u1->time_hi_and_version > u2->time_hi_and_version ? 1 : -1;
179 : }
180 :
181 4617513 : if (u1->clock_seq[0] != u2->clock_seq[0]) {
182 8613 : return u1->clock_seq[0] > u2->clock_seq[0] ? 1 : -1;
183 : }
184 :
185 4608900 : if (u1->clock_seq[1] != u2->clock_seq[1]) {
186 2840 : return u1->clock_seq[1] > u2->clock_seq[1] ? 1 : -1;
187 : }
188 :
189 4606060 : return memcmp(u1->node, u2->node, 6);
190 : }
191 :
192 : /**
193 : its useful to be able to display these in debugging messages
194 : */
195 17862365 : _PUBLIC_ char *GUID_string(TALLOC_CTX *mem_ctx, const struct GUID *guid)
196 : {
197 : struct GUID_txt_buf buf;
198 17862365 : return talloc_strdup(mem_ctx, GUID_buf_string(guid, &buf));
199 : }
200 :
201 : /**
202 : * Does the same without allocating memory, using the structure buffer.
203 : * Useful for debug messages, so that you do not have to talloc_free the result
204 : */
205 24882680 : _PUBLIC_ char* GUID_buf_string(const struct GUID *guid,
206 : struct GUID_txt_buf *dst)
207 : {
208 24882680 : if (!guid) {
209 0 : return NULL;
210 : }
211 228195236 : snprintf(dst->buf, sizeof(dst->buf),
212 : "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
213 24882680 : guid->time_low, guid->time_mid,
214 24882680 : guid->time_hi_and_version,
215 24882680 : guid->clock_seq[0],
216 24882680 : guid->clock_seq[1],
217 47472964 : guid->node[0], guid->node[1],
218 47472964 : guid->node[2], guid->node[3],
219 47472964 : guid->node[4], guid->node[5]);
220 24882680 : return dst->buf;
221 : }
222 :
223 51 : _PUBLIC_ char *GUID_string2(TALLOC_CTX *mem_ctx, const struct GUID *guid)
224 : {
225 : struct GUID_txt_buf buf;
226 51 : char *ret = talloc_asprintf(
227 : mem_ctx, "{%s}", GUID_buf_string(guid, &buf));
228 51 : return ret;
229 : }
230 :
231 0 : _PUBLIC_ char *GUID_hexstring(TALLOC_CTX *mem_ctx, const struct GUID *guid)
232 : {
233 0 : char *ret = NULL;
234 0 : DATA_BLOB guid_blob = { .data = NULL };
235 : NTSTATUS status;
236 :
237 0 : status = GUID_to_ndr_blob(guid, mem_ctx, &guid_blob);
238 0 : if (NT_STATUS_IS_OK(status)) {
239 0 : ret = data_blob_hex_string_upper(mem_ctx, &guid_blob);
240 : }
241 0 : TALLOC_FREE(guid_blob.data);
242 0 : return ret;
243 : }
244 :
245 372367 : _PUBLIC_ bool ndr_policy_handle_empty(const struct policy_handle *h)
246 : {
247 372367 : return (h->handle_type == 0 && GUID_all_zero(&h->uuid));
248 : }
249 :
250 161 : _PUBLIC_ bool ndr_policy_handle_equal(const struct policy_handle *hnd1,
251 : const struct policy_handle *hnd2)
252 : {
253 161 : if (!hnd1 || !hnd2) {
254 0 : return false;
255 : }
256 :
257 161 : return (memcmp(hnd1, hnd2, sizeof(*hnd1)) == 0);
258 : }
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