1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_sal.hxx"
26
27 #include <string.h>
28 #include <stdlib.h>
29
30 #include <osl/mutex.hxx>
31 #include <rtl/random.h>
32 #include <rtl/uuid.h>
33 #include <rtl/digest.h>
34
35 #define SWAP_INT32_TO_NETWORK(x)\
36 { sal_uInt32 y = x;\
37 sal_uInt8 *p = (sal_uInt8 * )&(x); \
38 p[0] = (sal_uInt8) ( ( y >> 24 ) & 0xff );\
39 p[1] = (sal_uInt8) ( ( y >> 16 ) & 0xff );\
40 p[2] = (sal_uInt8) ( ( y >> 8 ) & 0xff );\
41 p[3] = (sal_uInt8) ( ( y ) & 0xff);\
42 }
43 #define SWAP_INT16_TO_NETWORK(x)\
44 { sal_uInt16 y = x;\
45 sal_uInt8 *p = (sal_uInt8 * )&(x); \
46 p[0] = (sal_uInt8) ( ( y >> 8 ) & 0xff );\
47 p[1] = (sal_uInt8) ( ( y ) & 0xff);\
48 }
49
50 #define SWAP_NETWORK_TO_INT16(x)\
51 { sal_uInt16 y = x;\
52 sal_uInt8 *p = (sal_uInt8 * )&(y);\
53 x = ( ( ((sal_uInt16)p[0]) & 0xff) << 8 ) |\
54 ( ( (sal_uInt16)p[1]) & 0xff);\
55 }
56 #define SWAP_NETWORK_TO_INT32(x)\
57 { sal_uInt32 y = x;\
58 sal_uInt8 *p = (sal_uInt8 * )&(y); \
59 x = ( ( ((sal_uInt32)p[0]) & 0xff) << 24 ) |\
60 ( ( ((sal_uInt32)p[1]) & 0xff) << 16 ) |\
61 ( ( ((sal_uInt32)p[2]) & 0xff) << 8 ) |\
62 ( ( (sal_uInt32)p[3]) & 0xff);\
63 }
64
65 typedef struct _UUID
66 {
67 sal_uInt32 time_low;
68 sal_uInt16 time_mid;
69 sal_uInt16 time_hi_and_version;
70 sal_uInt8 clock_seq_hi_and_reserved;
71 sal_uInt8 clock_seq_low;
72 sal_uInt8 node[6];
73 } UUID;
74
write_v3(sal_uInt8 * pUuid)75 static void write_v3( sal_uInt8 *pUuid )
76 {
77 UUID uuid;
78 // copy to avoid alignment problems
79 memcpy( &uuid , pUuid , 16 );
80
81 SWAP_NETWORK_TO_INT32( uuid.time_low );
82 SWAP_NETWORK_TO_INT16( uuid.time_mid );
83 SWAP_NETWORK_TO_INT16( uuid.time_hi_and_version );
84
85 /* put in the variant and version bits */
86 uuid.time_hi_and_version &= 0x0FFF;
87 uuid.time_hi_and_version |= (3 << 12);
88 uuid.clock_seq_hi_and_reserved &= 0x3F;
89 uuid.clock_seq_hi_and_reserved |= 0x80;
90
91 SWAP_INT32_TO_NETWORK( uuid.time_low );
92 SWAP_INT16_TO_NETWORK( uuid.time_mid );
93 SWAP_INT16_TO_NETWORK( uuid.time_hi_and_version );
94
95 memcpy( pUuid , &uuid , 16 );
96 }
97
98
rtl_createUuid(sal_uInt8 * pTargetUUID,const sal_uInt8 *,sal_Bool)99 extern "C" void SAL_CALL rtl_createUuid( sal_uInt8 *pTargetUUID ,
100 const sal_uInt8 *, sal_Bool )
101 {
102 {
103 osl::MutexGuard g(osl::Mutex::getGlobalMutex());
104 static rtlRandomPool pool = NULL;
105 if (pool == NULL) {
106 pool = rtl_random_createPool();
107 if (pool == NULL) {
108 abort();
109 // only possible way to signal failure here (rtl_createUuid
110 // being part of a fixed C API)
111 }
112 }
113 if (rtl_random_getBytes(pool, pTargetUUID, 16) != rtl_Random_E_None) {
114 abort();
115 // only possible way to signal failure here (rtl_createUuid
116 // being part of a fixed C API)
117 }
118 }
119 // See ITU-T Recommendation X.667:
120 pTargetUUID[6] &= 0x0F;
121 pTargetUUID[6] |= 0x40;
122 pTargetUUID[8] &= 0x3F;
123 pTargetUUID[8] |= 0x80;
124 }
125
126
rtl_createNamedUuid(sal_uInt8 * pTargetUUID,const sal_uInt8 * pNameSpaceUUID,const rtl_String * pName)127 extern "C" void SAL_CALL rtl_createNamedUuid( sal_uInt8 *pTargetUUID,
128 const sal_uInt8 *pNameSpaceUUID,
129 const rtl_String *pName )
130 {
131 rtlDigest digest = rtl_digest_createMD5 ();
132
133 rtl_digest_updateMD5( digest, pNameSpaceUUID , 16 );
134 rtl_digest_updateMD5( digest, pName->buffer , pName->length );
135
136 rtl_digest_getMD5( digest, pTargetUUID , 16 );
137 rtl_digest_destroyMD5 (digest);
138
139 write_v3(pTargetUUID);
140 }
141
142
143
rtl_compareUuid(const sal_uInt8 * pUUID1,const sal_uInt8 * pUUID2)144 extern "C" sal_Int32 SAL_CALL rtl_compareUuid( const sal_uInt8 *pUUID1 , const sal_uInt8 *pUUID2 )
145 {
146 int i;
147 UUID u1;
148 UUID u2;
149 memcpy( &u1 , pUUID1 , 16 );
150 memcpy( &u2 , pUUID2 , 16 );
151
152 SWAP_NETWORK_TO_INT32( u1.time_low );
153 SWAP_NETWORK_TO_INT16( u1.time_mid );
154 SWAP_NETWORK_TO_INT16( u1.time_hi_and_version );
155
156 SWAP_NETWORK_TO_INT32( u2.time_low );
157 SWAP_NETWORK_TO_INT16( u2.time_mid );
158 SWAP_NETWORK_TO_INT16( u2.time_hi_and_version );
159
160 #define CHECK(f1, f2) if (f1 != f2) return f1 < f2 ? -1 : 1;
161 CHECK(u1.time_low, u2.time_low);
162 CHECK(u1.time_mid, u2.time_mid);
163 CHECK(u1.time_hi_and_version, u2.time_hi_and_version);
164 CHECK(u1.clock_seq_hi_and_reserved, u2.clock_seq_hi_and_reserved);
165 CHECK(u1.clock_seq_low, u2.clock_seq_low);
166 for (i = 0; i < 6; i++)
167 {
168 if (u1.node[i] < u2.node[i])
169 return -1;
170 if (u1.node[i] > u2.node[i])
171 return 1;
172 }
173 return 0;
174
175 }
176
177