Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
226 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
||
4 | * UUID utils for PHP |
||
5 | * Copyright 2011-2020 Daniel Marschall, ViaThinkSoft |
||
6 | * Version 2020-02-28 |
||
7 | * |
||
8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
||
9 | * you may not use this file except in compliance with the License. |
||
10 | * You may obtain a copy of the License at |
||
11 | * |
||
12 | * http://www.apache.org/licenses/LICENSE-2.0 |
||
13 | * |
||
14 | * Unless required by applicable law or agreed to in writing, software |
||
15 | * distributed under the License is distributed on an "AS IS" BASIS, |
||
16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||
17 | * See the License for the specific language governing permissions and |
||
18 | * limitations under the License. |
||
19 | */ |
||
20 | |||
21 | # This library requires either the GMP extension (or BCMath if gmp_supplement.inc.php is present) |
||
22 | |||
23 | if (file_exists(__DIR__ . '/mac_utils.inc.phps')) include_once __DIR__ . '/mac_utils.inc.phps'; |
||
24 | if (file_exists(__DIR__ . '/gmp_supplement.inc.php')) include_once __DIR__ . '/gmp_supplement.inc.php'; |
||
25 | |||
26 | define('UUID_NAMEBASED_NS_DNS', '6ba7b810-9dad-11d1-80b4-00c04fd430c8'); |
||
27 | define('UUID_NAMEBASED_NS_URL', '6ba7b811-9dad-11d1-80b4-00c04fd430c8'); |
||
28 | define('UUID_NAMEBASED_NS_OID', '6ba7b812-9dad-11d1-80b4-00c04fd430c8'); |
||
29 | define('UUID_NAMEBASED_NS_X500_DN', '6ba7b814-9dad-11d1-80b4-00c04fd430c8'); |
||
30 | |||
31 | function uuid_valid($uuid) { |
||
32 | $uuid = str_replace(array('-', '{', '}'), '', $uuid); |
||
33 | $uuid = strtoupper($uuid); |
||
34 | |||
35 | if (strlen($uuid) != 32) return false; |
||
36 | |||
37 | $uuid = preg_replace('@[0-9A-F]@', '', $uuid); |
||
38 | |||
39 | return ($uuid == ''); |
||
40 | } |
||
41 | |||
42 | # TODO: Don't echo |
||
43 | function uuid_info($uuid) { |
||
44 | if (!uuid_valid($uuid)) return false; |
||
45 | |||
46 | # $uuid = str_replace(array('-', '{', '}'), '', $uuid); |
||
47 | $uuid = strtoupper($uuid); |
||
48 | $uuid = preg_replace('@[^0-9A-F]@', '', $uuid); |
||
49 | |||
50 | $x = hexdec(substr($uuid, 16, 1)); |
||
51 | if ($x >= 14 /* 1110 */) $variant = 3; |
||
52 | else if ($x >= 12 /* 1100 */) $variant = 2; |
||
53 | else if ($x >= 8 /* 1000 */) $variant = 1; |
||
54 | else if ($x >= 0 /* 0000 */) $variant = 0; |
||
55 | |||
56 | |||
57 | switch ($variant) { |
||
58 | case 0: |
||
59 | echo sprintf("%-24s %s\n", "Variant:", "[0xx] NCS (reserved for backward compatibility)"); |
||
60 | |||
61 | /* |
||
62 | * Internal structure of variant #0 UUIDs |
||
63 | * |
||
64 | * The first 6 octets are the number of 4 usec units of time that have |
||
65 | * passed since 1/1/80 0000 GMT. The next 2 octets are reserved for |
||
66 | * future use. The next octet is an address family. The next 7 octets |
||
67 | * are a host ID in the form allowed by the specified address family. |
||
68 | * |
||
69 | * Note that while the family field (octet 8) was originally conceived |
||
70 | * of as being able to hold values in the range [0..255], only [0..13] |
||
71 | * were ever used. Thus, the 2 MSB of this field are always 0 and are |
||
72 | * used to distinguish old and current UUID forms. |
||
73 | * |
||
74 | * +--------------------------------------------------------------+ |
||
75 | * | high 32 bits of time | 0-3 .time_high |
||
76 | * +-------------------------------+------------------------------- |
||
77 | * | low 16 bits of time | 4-5 .time_low |
||
78 | * +-------+-----------------------+ |
||
79 | * | reserved | 6-7 .reserved |
||
80 | * +---------------+---------------+ |
||
81 | * | family | 8 .family |
||
82 | * +---------------+----------...-----+ |
||
83 | * | node ID | 9-16 .node |
||
84 | * +--------------------------...-----+ |
||
85 | * |
||
86 | */ |
||
87 | |||
88 | // Example of an UUID: 333a2276-0000-0000-0d00-00809c000000 |
||
89 | |||
90 | # TODO: See https://github.com/cjsv/uuid/blob/master/Doc |
||
91 | |||
92 | # Timestamp: Count of 4us intervals since 01 Jan 1980 00:00:00 GMT |
||
93 | # 1/0,000004 = 250000 |
||
94 | # Seconds between 1970 and 1980 : 315532800 |
||
95 | # 250000*315532800=78883200000000 |
||
96 | $timestamp = substr($uuid, 0, 12); |
||
97 | $ts = gmp_init($timestamp, 16); |
||
98 | $ts = gmp_add($ts, gmp_init("78883200000000")); |
||
99 | $ms = gmp_mod($ts, gmp_init("250000")); |
||
100 | $ts = gmp_div($ts, gmp_init("250000")); |
||
101 | $ts = gmp_strval($ts); |
||
102 | $ms = gmp_strval($ms); |
||
103 | $ts = gmdate('Y-m-d H:i:s', $ts)."'".str_pad($ms, 7, '0', STR_PAD_LEFT).' GMT'; |
||
104 | echo sprintf("%-24s %s\n", "Timestamp:", "[0x$timestamp] $ts"); |
||
105 | |||
106 | $reserved = substr($uuid, 12, 4); |
||
107 | echo sprintf("%-24s %s\n", "Reserved:", "0x$reserved"); |
||
108 | |||
109 | # Family 13 (dds) looks like node is 00 | nnnnnn 000000. |
||
110 | # Family 2 is presumably (ip). |
||
111 | # Not sure if anything else was used. |
||
112 | $family_hex = substr($uuid, 16, 2); |
||
113 | $family_dec = hexdec($family_hex); |
||
114 | if ($family_dec == 2) { |
||
115 | $family_ = 'IP'; |
||
116 | } else if ($family_dec == 13) { |
||
117 | $family_ = 'DDS (Data Link)'; |
||
118 | } else { |
||
119 | $family_ = "Unknown ($family_dec)"; # There are probably no more families |
||
120 | } |
||
121 | echo sprintf("%-24s %s\n", "Family:", "[0x$family_hex = $family_dec] $family_"); |
||
122 | |||
123 | $nodeid = substr($uuid, 18, 14); |
||
124 | echo sprintf("%-24s %s\n", "Node ID:", "0x$nodeid"); |
||
125 | # TODO: interprete node id (the family specifies it) |
||
126 | |||
127 | break; |
||
128 | case 1: |
||
129 | echo sprintf("%-24s %s\n", "Variant:", "[10x] RFC 4122 (Leach-Mealling-Salz)"); |
||
130 | |||
131 | $version = hexdec(substr($uuid, 12, 1)); |
||
132 | switch ($version) { |
||
133 | case 1: |
||
134 | echo sprintf("%-24s %s\n", "Version:", "[1] Time-based with unique random host identifier"); |
||
135 | |||
136 | # Timestamp: Count of 100ns intervals since 15 Oct 1582 00:00:00 |
||
137 | # 1/0,0000001 = 10000000 |
||
138 | $timestamp = substr($uuid, 13, 3).substr($uuid, 8, 4).substr($uuid, 0, 8); |
||
139 | $ts = gmp_init($timestamp, 16); |
||
140 | $ts = gmp_sub($ts, gmp_init("122192928000000000")); |
||
141 | $ms = gmp_mod($ts, gmp_init("10000000")); |
||
142 | $ts = gmp_div($ts, gmp_init("10000000")); |
||
143 | $ts = gmp_strval($ts); |
||
144 | $ms = gmp_strval($ms); |
||
145 | $ts = gmdate('Y-m-d H:i:s', $ts)."'".str_pad($ms, 7, '0', STR_PAD_LEFT).' GMT'; |
||
146 | echo sprintf("%-24s %s\n", "Timestamp:", "[0x$timestamp] $ts"); |
||
147 | |||
148 | $x = hexdec(substr($uuid, 16, 4)); |
||
149 | $dec = $x & 0x3FFF; // The highest 2 bits are used by "variant" (10x) |
||
150 | $hex = substr($uuid, 16, 4); |
||
151 | echo sprintf("%-24s %s\n", "Clock ID:", "[0x$hex] $dec"); |
||
152 | |||
153 | $x = substr($uuid, 20, 12); |
||
154 | $nodeid = ''; |
||
155 | for ($i=0; $i<6; $i++) { |
||
156 | $nodeid .= substr($x, $i*2, 2); |
||
157 | if ($i != 5) $nodeid .= ':'; |
||
158 | } |
||
159 | echo sprintf("%-24s %s\n", "Node ID:", "$nodeid"); |
||
160 | |||
161 | if (function_exists('decode_mac')) { |
||
162 | echo "\nIn case that this Node ID is a MAC address, here is the interpretation of that MAC address:\n"; |
||
163 | echo decode_mac($nodeid); |
||
164 | } |
||
165 | |||
166 | break; |
||
167 | case 2: |
||
168 | echo sprintf("%-24s %s\n", "Version:", "[2] DCE Security version"); |
||
169 | |||
170 | # The time_low field (which represents an integer in the range [0, 232-1]) is interpreted as a local-ID; that is, an identifier (within the domain specified by clock_seq_low) meaningful to the local host. In the particular case of a POSIX host, when combined with a POSIX UID or POSIX GID domain in the clock_seq_low field (above), the time_low field represents a POSIX UID or POSIX GID, respectively. |
||
171 | $x = substr($uuid, 0, 8); |
||
172 | echo sprintf("%-24s %s\n", "Local ID:", "0x$x"); |
||
173 | |||
174 | # The clock_seq_low field (which represents an integer in the range [0, 28-1]) is interpreted as a local domain (as represented by sec_rgy_domain_t; see sec_rgy_domain_t ); that is, an identifier domain meaningful to the local host. (Note that the data type sec_rgy_domain_t can potentially hold values outside the range [0, 28-1]; however, the only values currently registered are in the range [0, 2], so this type mismatch is not significant.) In the particular case of a POSIX host, the value sec_rgy_domain_person is to be interpreted as the "POSIX UID domain", and the value sec_rgy_domain_group is to be interpreted as the "POSIX GID domain". |
||
175 | $x = substr($uuid, 18, 2); |
||
176 | if ($x == '00') $domain_info = 'POSIX: User-ID / Non-POSIX: site-defined'; |
||
177 | else if ($x == '01') $domain_info = 'POSIX: Group-ID / Non-POSIX: site-defined'; |
||
178 | else $domain_info = 'site-defined'; |
||
179 | echo sprintf("%-24s %s\n", "Local Domain:", "0x$x ($domain_info)"); |
||
180 | |||
181 | # Timestamp: Count of 100ns intervals since 15 Oct 1582 00:00:00 |
||
182 | # 1/0,0000001 = 10000000 |
||
183 | $timestamp = substr($uuid, 13, 3).substr($uuid, 8, 4).'00000000'; |
||
184 | $ts = gmp_init($timestamp, 16); |
||
185 | $ts = gmp_sub($ts, gmp_init("122192928000000000")); |
||
186 | $ms = gmp_mod($ts, gmp_init("10000000")); |
||
187 | $ts = gmp_div($ts, gmp_init("10000000")); |
||
188 | $ts = gmp_strval($ts); |
||
189 | $ms = gmp_strval($ms); |
||
190 | $ts_min = gmdate('Y-m-d H:i:s', $ts)."'".str_pad($ms, 7, '0', STR_PAD_LEFT).' GMT'; |
||
191 | |||
192 | $timestamp = substr($uuid, 13, 3).substr($uuid, 8, 4).'FFFFFFFF'; |
||
193 | $ts = gmp_init($timestamp, 16); |
||
194 | $ts = gmp_sub($ts, gmp_init("122192928000000000")); |
||
195 | $ms = gmp_mod($ts, gmp_init("10000000")); |
||
196 | $ts = gmp_div($ts, gmp_init("10000000")); |
||
197 | $ts = gmp_strval($ts); |
||
198 | $ms = gmp_strval($ms); |
||
199 | $ts_max = gmdate('Y-m-d H:i:s', $ts)."'".str_pad($ms, 7, '0', STR_PAD_LEFT).' GMT'; |
||
200 | |||
201 | $timestamp = substr($uuid, 13, 3).substr($uuid, 8, 4).'xxxxxxxx'; |
||
202 | echo sprintf("%-24s %s\n", "Timestamp:", "[0x$timestamp] $ts_min - $ts_max"); |
||
203 | |||
204 | $x = hexdec(substr($uuid, 16, 2).'00'); |
||
205 | $dec_min = $x & 0x3FFF; // The highest 2 bits are used by "variant" (10x) |
||
206 | $x = hexdec(substr($uuid, 16, 2).'FF'); |
||
207 | $dec_max = $x & 0x3FFF; // The highest 2 bits are used by "variant" (10x) |
||
208 | $hex = substr($uuid, 16, 2).'xx'; |
||
209 | echo sprintf("%-24s %s\n", "Clock ID:", "[0x$hex] $dec_min - $dec_max"); |
||
210 | |||
211 | $x = substr($uuid, 20, 12); |
||
212 | $nodeid = ''; |
||
213 | for ($i=0; $i<6; $i++) { |
||
214 | $nodeid .= substr($x, $i*2, 2); |
||
215 | if ($i != 5) $nodeid .= ':'; |
||
216 | } |
||
217 | echo sprintf("%-24s %s\n", "Node ID:", "$nodeid"); |
||
218 | |||
219 | if (function_exists('decode_mac')) { |
||
220 | echo "\nIn case that this Node ID is a MAC address, here is the interpretation of that MAC address:\n"; |
||
221 | echo decode_mac($nodeid); |
||
222 | } |
||
223 | |||
224 | break; |
||
225 | case 3: |
||
226 | echo sprintf("%-24s %s\n", "Version:", "[3] Name-based (MD5 hash)"); |
||
227 | |||
228 | $hash = str_replace('-', '', strtolower($uuid)); |
||
229 | $hash[12] = '?'; // was overwritten by version |
||
230 | $hash[16] = '?'; // was partially overwritten by variant |
||
231 | |||
232 | echo sprintf("%-24s %s\n", "MD5(Namespace+Subject):", "$hash"); |
||
233 | |||
234 | break; |
||
235 | case 4: |
||
236 | echo sprintf("%-24s %s\n", "Version:", "[4] Random"); |
||
237 | |||
238 | $rand = ''; |
||
239 | for ($i=0; $i<16; $i++) { |
||
240 | $bin = base_convert(substr($uuid, $i*2, 2), 16, 2); |
||
241 | $bin = str_pad($bin, 8, "0", STR_PAD_LEFT); |
||
242 | |||
243 | if ($i == 6) { |
||
244 | $bin[0] = 'x'; |
||
245 | $bin[1] = 'x'; |
||
246 | } else if ($i == 8) { |
||
247 | $bin[0] = 'x'; |
||
248 | $bin[1] = 'x'; |
||
249 | $bin[2] = 'x'; |
||
250 | $bin[3] = 'x'; |
||
251 | } |
||
252 | |||
253 | $rand .= "$bin "; |
||
254 | } |
||
255 | |||
256 | echo sprintf("%-24s %s\n", "Random bits:", trim($rand)); |
||
257 | |||
258 | break; |
||
259 | case 5: |
||
260 | echo sprintf("%-24s %s\n", "Version:", "[5] Name-based (SHA-1 hash)"); |
||
261 | |||
262 | $hash = str_replace('-', '', strtolower($uuid)); |
||
263 | $hash[12] = '?'; // was overwritten by version |
||
264 | $hash[16] = '?'; // was partially overwritten by variant |
||
265 | $hash .= '????????'; // was cut off |
||
266 | |||
267 | echo sprintf("%-24s %s\n", "SHA1(Namespace+Subject):", "$hash"); |
||
268 | |||
269 | |||
270 | break; |
||
271 | default: |
||
272 | echo sprintf("%-24s %s\n", "Version:", "[$version] Unknown"); |
||
273 | break; |
||
274 | } |
||
275 | |||
276 | break; |
||
277 | case 2: |
||
278 | echo sprintf("%-24s %s\n", "Variant:", "[110] Reserved for Microsoft Corporation"); |
||
279 | break; |
||
280 | case 3: |
||
281 | echo sprintf("%-24s %s\n", "Variant:", "[111] Reserved for future use"); |
||
282 | break; |
||
283 | } |
||
284 | } |
||
285 | |||
286 | function uuid_canonize($uuid) { |
||
287 | if (!uuid_valid($uuid)) return false; |
||
288 | return oid_to_uuid(uuid_to_oid($uuid)); |
||
289 | } |
||
290 | |||
291 | function oid_to_uuid($oid) { |
||
292 | if (!is_uuid_oid($oid)) return false; |
||
293 | |||
294 | if ($oid[0] == '.') { |
||
295 | $oid = substr($oid, 1); |
||
296 | } |
||
297 | $ary = explode('.', $oid); |
||
298 | $val = $ary[2]; |
||
299 | |||
300 | $x = gmp_init($val, 10); |
||
301 | $y = gmp_strval($x, 16); |
||
302 | $y = str_pad($y, 32, "0", STR_PAD_LEFT); |
||
303 | return substr($y, 0, 8).'-'. |
||
304 | substr($y, 8, 4).'-'. |
||
305 | substr($y, 12, 4).'-'. |
||
306 | substr($y, 16, 4).'-'. |
||
307 | substr($y, 20, 12); |
||
308 | } |
||
309 | |||
310 | function is_uuid_oid($oid, $only_allow_root=false) { |
||
311 | if ($oid[0] == '.') $oid = substr($oid, 1); // remove leading dot |
||
312 | |||
313 | $ary = explode('.', $oid); |
||
314 | |||
315 | if ($only_allow_root) { |
||
316 | if (count($ary) != 3) return false; |
||
317 | } |
||
318 | |||
319 | if ($ary[0] != '2') return false; |
||
320 | if ($ary[1] != '25') return false; |
||
321 | for ($i=2; $i<count($ary); $i++) { |
||
322 | $v = $ary[$i]; |
||
323 | if (!is_numeric($v)) return false; |
||
324 | if ($i == 2) { |
||
325 | // Must be in the range of 128 bit UUID |
||
326 | $test = gmp_init($v, 10); |
||
327 | if (strlen(gmp_strval($test, 16)) > 32) return false; |
||
328 | } |
||
329 | if ($v < 0) return false; |
||
330 | } |
||
331 | |||
332 | return true; |
||
333 | } |
||
334 | |||
335 | function uuid_to_oid($uuid) { |
||
336 | if (!uuid_valid($uuid)) return false; |
||
337 | |||
338 | $uuid = str_replace(array('-', '{', '}'), '', $uuid); |
||
339 | $x = gmp_init($uuid, 16); |
||
340 | return '2.25.'.gmp_strval($x, 10); # TODO: parameter with or without leading dot |
||
341 | } |
||
342 | |||
343 | function gen_uuid($prefer_timebased = true) { |
||
344 | if ($prefer_timebased) $uuid = gen_uuid_timebased(); |
||
345 | if ($uuid === false) $uuid = gen_uuid_random(); |
||
346 | return $uuid; |
||
347 | } |
||
348 | |||
349 | // Version 1 (Time based) UUID |
||
350 | function gen_uuid_timebased() { |
||
351 | # On Debian: aptitude install php-uuid |
||
352 | # extension_loaded('uuid') |
||
353 | if (function_exists('uuid_create')) { |
||
354 | # OSSP uuid extension like seen in php5-uuid at Debian 8 |
||
355 | /* |
||
356 | $x = uuid_create($context); |
||
357 | uuid_make($context, UUID_MAKE_V1); |
||
358 | uuid_export($context, UUID_FMT_STR, $uuid); |
||
359 | return trim($uuid); |
||
360 | */ |
||
361 | |||
362 | # PECL uuid extension like seen in php-uuid at Debian 9 |
||
363 | return trim(uuid_create(UUID_TYPE_TIME)); |
||
364 | } |
||
365 | |||
366 | # On Debian: aptitude install uuid-runtime |
||
367 | $out = array(); |
||
368 | exec('uuidgen -t', $out, $ec); |
||
369 | if ($ec == 0) return $out[0]; |
||
370 | |||
371 | # TODO: Implement the time based generation routine ourselves! |
||
372 | # At the moment we cannot determine the time based UUID |
||
373 | return false; |
||
374 | } |
||
375 | |||
376 | // Version 2 (DCE Security) UUID |
||
377 | function gen_uuid_dce($domain, $id) { |
||
378 | # Start with a version 1 UUID |
||
379 | $uuid = gen_uuid_timebased(); |
||
380 | |||
381 | # Add ID |
||
382 | $uuid = str_pad(dechex($id), 8, '0', STR_PAD_LEFT) . substr($uuid, 8); |
||
383 | |||
384 | # Add domain |
||
385 | $uuid = substr($uuid,0,21) . str_pad(dechex($domain), 2, '0', STR_PAD_LEFT) . substr($uuid, 23); |
||
386 | |||
387 | # Change version to 2 |
||
388 | $uuid[14] = '2'; |
||
389 | |||
390 | return $uuid; |
||
391 | } |
||
392 | |||
393 | // Version 3 (MD5 name based) UUID |
||
394 | function gen_uuid_md5_namebased($namespace_uuid, $name) { |
||
395 | if (!uuid_valid($namespace_uuid)) return false; |
||
396 | $namespace_uuid = uuid_canonize($namespace_uuid); |
||
397 | $namespace_uuid = str_replace('-', '', $namespace_uuid); |
||
398 | $namespace_uuid = hex2bin($namespace_uuid); |
||
399 | |||
400 | $hash = md5($namespace_uuid.$name); |
||
401 | $hash[12] = '3'; // Set version: 3 = MD5 |
||
402 | $hash[16] = dechex(hexdec($hash[16]) & 0x3 | 0x8); // Set variant to "10xx" (RFC4122) |
||
403 | |||
404 | return substr($hash, 0, 8).'-'. |
||
405 | substr($hash, 8, 4).'-'. |
||
406 | substr($hash, 12, 4).'-'. |
||
407 | substr($hash, 16, 4).'-'. |
||
408 | substr($hash, 20, 12); |
||
409 | } |
||
410 | |||
411 | // Version 4 (Random) UUID |
||
412 | function gen_uuid_random() { |
||
413 | # On Debian: aptitude install php-uuid |
||
414 | # extension_loaded('uuid') |
||
415 | if (function_exists('uuid_create')) { |
||
416 | # OSSP uuid extension like seen in php5-uuid at Debian 8 |
||
417 | /* |
||
418 | $x = uuid_create($context); |
||
419 | uuid_make($context, UUID_MAKE_V4); |
||
420 | uuid_export($context, UUID_FMT_STR, $uuid); |
||
421 | return trim($uuid); |
||
422 | */ |
||
423 | |||
424 | # PECL uuid extension like seen in php-uuid at Debian 9 |
||
425 | return trim(uuid_create(UUID_TYPE_RANDOM)); |
||
426 | } |
||
427 | |||
428 | # On Debian: aptitude install uuid-runtime |
||
429 | $out = array(); |
||
430 | exec('uuidgen -r', $out, $ec); |
||
431 | if ($ec == 0) return $out[0]; |
||
432 | |||
433 | # On Debian Jessie: UUID V4 (Random) |
||
434 | if (file_exists('/proc/sys/kernel/random/uuid')) { |
||
435 | return file_get_contents('/proc/sys/kernel/random/uuid'); |
||
436 | } |
||
437 | |||
438 | # Make the UUID by ourselves |
||
439 | # Source: http://rogerstringer.com/2013/11/15/generate-uuids-php |
||
440 | return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x', |
||
441 | mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), |
||
442 | mt_rand( 0, 0xffff ), |
||
443 | mt_rand( 0, 0x0fff ) | 0x4000, |
||
444 | mt_rand( 0, 0x3fff ) | 0x8000, |
||
445 | mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ) |
||
446 | ); |
||
447 | } |
||
448 | |||
449 | // Version 5 (SHA1 name based) UUID |
||
450 | function gen_uuid_sha1_namebased($namespace_uuid, $name) { |
||
451 | $namespace_uuid = str_replace('-', '', $namespace_uuid); |
||
452 | $namespace_uuid = hex2bin($namespace_uuid); |
||
453 | |||
454 | $hash = sha1($namespace_uuid.$name); |
||
455 | $hash[12] = '5'; // Set version: 5 = SHA1 |
||
456 | $hash[16] = dechex(hexdec($hash[16]) & 0x3 | 0x8); // Set variant to "10xx" (RFC4122) |
||
457 | |||
458 | return substr($hash, 0, 8).'-'. |
||
459 | substr($hash, 8, 4).'-'. |
||
460 | substr($hash, 12, 4).'-'. |
||
461 | substr($hash, 16, 4).'-'. |
||
462 | substr($hash, 20, 12); |
||
463 | } |
||
464 | |||
465 | function uuid_numeric_value($uuid) { |
||
466 | $oid = uuid_to_oid($uuid); |
||
467 | if (!$oid) return false; |
||
468 | return substr($oid, strlen('2.25.')); |
||
469 | } |
||
470 | |||
471 | function uuid_c_syntax($uuid) { |
||
472 | $uuid = str_replace('{', '', $uuid); |
||
473 | return '{ 0x' . substr($uuid, 0, 8) . |
||
474 | ', 0x' . substr($uuid, 9, 4) . |
||
475 | ', 0x' . substr($uuid, 14, 4) . |
||
476 | ', { 0x' . substr($uuid, 19, 2). |
||
477 | ', 0x' . substr($uuid, 21, 2) . |
||
478 | ', 0x' . substr($uuid, 24, 2) . |
||
479 | ', 0x' . substr($uuid, 26, 2) . |
||
480 | ', 0x' . substr($uuid, 28, 2) . |
||
481 | ', 0x' . substr($uuid, 30, 2) . |
||
482 | ', 0x' . substr($uuid, 32, 2) . |
||
483 | ', 0x' . substr($uuid, 34, 2) . ' } }'; |
||
484 | } |
||
485 | |||
486 | # --- |
||
487 | |||
488 | // http://php.net/manual/de/function.hex2bin.php#113057 |
||
489 | if ( !function_exists( 'hex2bin' ) ) { |
||
490 | function hex2bin( $str ) { |
||
491 | $sbin = ""; |
||
492 | $len = strlen( $str ); |
||
493 | for ( $i = 0; $i < $len; $i += 2 ) { |
||
494 | $sbin .= pack( "H*", substr( $str, $i, 2 ) ); |
||
495 | } |
||
496 | |||
497 | return $sbin; |
||
498 | } |
||
499 | } |