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author | tcitworld <thomas.citharet@gmail.com> | 2014-01-04 12:30:31 -0800 |
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committer | tcitworld <thomas.citharet@gmail.com> | 2014-01-04 12:30:31 -0800 |
commit | 7f667839764621b5aa01c9db8ce5dde2a29ef18f (patch) | |
tree | 93d8241ee81c87e18494325ae02f0589a8e328a2 /inc/3rdparty/libraries/simplepie/library/SimplePie/Net/IPv6.php | |
parent | a84f77d6ba15a64ff00453f5d5190c021ce460ed (diff) | |
parent | 2abcccb37180c17318f5226f5d4bc28f30b621ea (diff) | |
download | wallabag-7f667839764621b5aa01c9db8ce5dde2a29ef18f.tar.gz wallabag-7f667839764621b5aa01c9db8ce5dde2a29ef18f.tar.zst wallabag-7f667839764621b5aa01c9db8ce5dde2a29ef18f.zip |
Merge pull request #1 from inthepoche/dev
Dev
Diffstat (limited to 'inc/3rdparty/libraries/simplepie/library/SimplePie/Net/IPv6.php')
-rw-r--r-- | inc/3rdparty/libraries/simplepie/library/SimplePie/Net/IPv6.php | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/inc/3rdparty/libraries/simplepie/library/SimplePie/Net/IPv6.php b/inc/3rdparty/libraries/simplepie/library/SimplePie/Net/IPv6.php new file mode 100644 index 00000000..da80d8ac --- /dev/null +++ b/inc/3rdparty/libraries/simplepie/library/SimplePie/Net/IPv6.php | |||
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1 | <?php | ||
2 | /** | ||
3 | * SimplePie | ||
4 | * | ||
5 | * A PHP-Based RSS and Atom Feed Framework. | ||
6 | * Takes the hard work out of managing a complete RSS/Atom solution. | ||
7 | * | ||
8 | * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors | ||
9 | * All rights reserved. | ||
10 | * | ||
11 | * Redistribution and use in source and binary forms, with or without modification, are | ||
12 | * permitted provided that the following conditions are met: | ||
13 | * | ||
14 | * * Redistributions of source code must retain the above copyright notice, this list of | ||
15 | * conditions and the following disclaimer. | ||
16 | * | ||
17 | * * Redistributions in binary form must reproduce the above copyright notice, this list | ||
18 | * of conditions and the following disclaimer in the documentation and/or other materials | ||
19 | * provided with the distribution. | ||
20 | * | ||
21 | * * Neither the name of the SimplePie Team nor the names of its contributors may be used | ||
22 | * to endorse or promote products derived from this software without specific prior | ||
23 | * written permission. | ||
24 | * | ||
25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS | ||
26 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | ||
27 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS | ||
28 | * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
30 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
31 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | ||
32 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
33 | * POSSIBILITY OF SUCH DAMAGE. | ||
34 | * | ||
35 | * @package SimplePie | ||
36 | * @version 1.3.1 | ||
37 | * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue | ||
38 | * @author Ryan Parman | ||
39 | * @author Geoffrey Sneddon | ||
40 | * @author Ryan McCue | ||
41 | * @link http://simplepie.org/ SimplePie | ||
42 | * @license http://www.opensource.org/licenses/bsd-license.php BSD License | ||
43 | */ | ||
44 | |||
45 | |||
46 | /** | ||
47 | * Class to validate and to work with IPv6 addresses. | ||
48 | * | ||
49 | * @package SimplePie | ||
50 | * @subpackage HTTP | ||
51 | * @copyright 2003-2005 The PHP Group | ||
52 | * @license http://www.opensource.org/licenses/bsd-license.php | ||
53 | * @link http://pear.php.net/package/Net_IPv6 | ||
54 | * @author Alexander Merz <alexander.merz@web.de> | ||
55 | * @author elfrink at introweb dot nl | ||
56 | * @author Josh Peck <jmp at joshpeck dot org> | ||
57 | * @author Geoffrey Sneddon <geoffers@gmail.com> | ||
58 | */ | ||
59 | class SimplePie_Net_IPv6 | ||
60 | { | ||
61 | /** | ||
62 | * Uncompresses an IPv6 address | ||
63 | * | ||
64 | * RFC 4291 allows you to compress concecutive zero pieces in an address to | ||
65 | * '::'. This method expects a valid IPv6 address and expands the '::' to | ||
66 | * the required number of zero pieces. | ||
67 | * | ||
68 | * Example: FF01::101 -> FF01:0:0:0:0:0:0:101 | ||
69 | * ::1 -> 0:0:0:0:0:0:0:1 | ||
70 | * | ||
71 | * @author Alexander Merz <alexander.merz@web.de> | ||
72 | * @author elfrink at introweb dot nl | ||
73 | * @author Josh Peck <jmp at joshpeck dot org> | ||
74 | * @copyright 2003-2005 The PHP Group | ||
75 | * @license http://www.opensource.org/licenses/bsd-license.php | ||
76 | * @param string $ip An IPv6 address | ||
77 | * @return string The uncompressed IPv6 address | ||
78 | */ | ||
79 | public static function uncompress($ip) | ||
80 | { | ||
81 | $c1 = -1; | ||
82 | $c2 = -1; | ||
83 | if (substr_count($ip, '::') === 1) | ||
84 | { | ||
85 | list($ip1, $ip2) = explode('::', $ip); | ||
86 | if ($ip1 === '') | ||
87 | { | ||
88 | $c1 = -1; | ||
89 | } | ||
90 | else | ||
91 | { | ||
92 | $c1 = substr_count($ip1, ':'); | ||
93 | } | ||
94 | if ($ip2 === '') | ||
95 | { | ||
96 | $c2 = -1; | ||
97 | } | ||
98 | else | ||
99 | { | ||
100 | $c2 = substr_count($ip2, ':'); | ||
101 | } | ||
102 | if (strpos($ip2, '.') !== false) | ||
103 | { | ||
104 | $c2++; | ||
105 | } | ||
106 | // :: | ||
107 | if ($c1 === -1 && $c2 === -1) | ||
108 | { | ||
109 | $ip = '0:0:0:0:0:0:0:0'; | ||
110 | } | ||
111 | // ::xxx | ||
112 | else if ($c1 === -1) | ||
113 | { | ||
114 | $fill = str_repeat('0:', 7 - $c2); | ||
115 | $ip = str_replace('::', $fill, $ip); | ||
116 | } | ||
117 | // xxx:: | ||
118 | else if ($c2 === -1) | ||
119 | { | ||
120 | $fill = str_repeat(':0', 7 - $c1); | ||
121 | $ip = str_replace('::', $fill, $ip); | ||
122 | } | ||
123 | // xxx::xxx | ||
124 | else | ||
125 | { | ||
126 | $fill = ':' . str_repeat('0:', 6 - $c2 - $c1); | ||
127 | $ip = str_replace('::', $fill, $ip); | ||
128 | } | ||
129 | } | ||
130 | return $ip; | ||
131 | } | ||
132 | |||
133 | /** | ||
134 | * Compresses an IPv6 address | ||
135 | * | ||
136 | * RFC 4291 allows you to compress concecutive zero pieces in an address to | ||
137 | * '::'. This method expects a valid IPv6 address and compresses consecutive | ||
138 | * zero pieces to '::'. | ||
139 | * | ||
140 | * Example: FF01:0:0:0:0:0:0:101 -> FF01::101 | ||
141 | * 0:0:0:0:0:0:0:1 -> ::1 | ||
142 | * | ||
143 | * @see uncompress() | ||
144 | * @param string $ip An IPv6 address | ||
145 | * @return string The compressed IPv6 address | ||
146 | */ | ||
147 | public static function compress($ip) | ||
148 | { | ||
149 | // Prepare the IP to be compressed | ||
150 | $ip = self::uncompress($ip); | ||
151 | $ip_parts = self::split_v6_v4($ip); | ||
152 | |||
153 | // Replace all leading zeros | ||
154 | $ip_parts[0] = preg_replace('/(^|:)0+([0-9])/', '\1\2', $ip_parts[0]); | ||
155 | |||
156 | // Find bunches of zeros | ||
157 | if (preg_match_all('/(?:^|:)(?:0(?::|$))+/', $ip_parts[0], $matches, PREG_OFFSET_CAPTURE)) | ||
158 | { | ||
159 | $max = 0; | ||
160 | $pos = null; | ||
161 | foreach ($matches[0] as $match) | ||
162 | { | ||
163 | if (strlen($match[0]) > $max) | ||
164 | { | ||
165 | $max = strlen($match[0]); | ||
166 | $pos = $match[1]; | ||
167 | } | ||
168 | } | ||
169 | |||
170 | $ip_parts[0] = substr_replace($ip_parts[0], '::', $pos, $max); | ||
171 | } | ||
172 | |||
173 | if ($ip_parts[1] !== '') | ||
174 | { | ||
175 | return implode(':', $ip_parts); | ||
176 | } | ||
177 | else | ||
178 | { | ||
179 | return $ip_parts[0]; | ||
180 | } | ||
181 | } | ||
182 | |||
183 | /** | ||
184 | * Splits an IPv6 address into the IPv6 and IPv4 representation parts | ||
185 | * | ||
186 | * RFC 4291 allows you to represent the last two parts of an IPv6 address | ||
187 | * using the standard IPv4 representation | ||
188 | * | ||
189 | * Example: 0:0:0:0:0:0:13.1.68.3 | ||
190 | * 0:0:0:0:0:FFFF:129.144.52.38 | ||
191 | * | ||
192 | * @param string $ip An IPv6 address | ||
193 | * @return array [0] contains the IPv6 represented part, and [1] the IPv4 represented part | ||
194 | */ | ||
195 | private static function split_v6_v4($ip) | ||
196 | { | ||
197 | if (strpos($ip, '.') !== false) | ||
198 | { | ||
199 | $pos = strrpos($ip, ':'); | ||
200 | $ipv6_part = substr($ip, 0, $pos); | ||
201 | $ipv4_part = substr($ip, $pos + 1); | ||
202 | return array($ipv6_part, $ipv4_part); | ||
203 | } | ||
204 | else | ||
205 | { | ||
206 | return array($ip, ''); | ||
207 | } | ||
208 | } | ||
209 | |||
210 | /** | ||
211 | * Checks an IPv6 address | ||
212 | * | ||
213 | * Checks if the given IP is a valid IPv6 address | ||
214 | * | ||
215 | * @param string $ip An IPv6 address | ||
216 | * @return bool true if $ip is a valid IPv6 address | ||
217 | */ | ||
218 | public static function check_ipv6($ip) | ||
219 | { | ||
220 | $ip = self::uncompress($ip); | ||
221 | list($ipv6, $ipv4) = self::split_v6_v4($ip); | ||
222 | $ipv6 = explode(':', $ipv6); | ||
223 | $ipv4 = explode('.', $ipv4); | ||
224 | if (count($ipv6) === 8 && count($ipv4) === 1 || count($ipv6) === 6 && count($ipv4) === 4) | ||
225 | { | ||
226 | foreach ($ipv6 as $ipv6_part) | ||
227 | { | ||
228 | // The section can't be empty | ||
229 | if ($ipv6_part === '') | ||
230 | return false; | ||
231 | |||
232 | // Nor can it be over four characters | ||
233 | if (strlen($ipv6_part) > 4) | ||
234 | return false; | ||
235 | |||
236 | // Remove leading zeros (this is safe because of the above) | ||
237 | $ipv6_part = ltrim($ipv6_part, '0'); | ||
238 | if ($ipv6_part === '') | ||
239 | $ipv6_part = '0'; | ||
240 | |||
241 | // Check the value is valid | ||
242 | $value = hexdec($ipv6_part); | ||
243 | if (dechex($value) !== strtolower($ipv6_part) || $value < 0 || $value > 0xFFFF) | ||
244 | return false; | ||
245 | } | ||
246 | if (count($ipv4) === 4) | ||
247 | { | ||
248 | foreach ($ipv4 as $ipv4_part) | ||
249 | { | ||
250 | $value = (int) $ipv4_part; | ||
251 | if ((string) $value !== $ipv4_part || $value < 0 || $value > 0xFF) | ||
252 | return false; | ||
253 | } | ||
254 | } | ||
255 | return true; | ||
256 | } | ||
257 | else | ||
258 | { | ||
259 | return false; | ||
260 | } | ||
261 | } | ||
262 | |||
263 | /** | ||
264 | * Checks if the given IP is a valid IPv6 address | ||
265 | * | ||
266 | * @codeCoverageIgnore | ||
267 | * @deprecated Use {@see SimplePie_Net_IPv6::check_ipv6()} instead | ||
268 | * @see check_ipv6 | ||
269 | * @param string $ip An IPv6 address | ||
270 | * @return bool true if $ip is a valid IPv6 address | ||
271 | */ | ||
272 | public static function checkIPv6($ip) | ||
273 | { | ||
274 | return self::check_ipv6($ip); | ||
275 | } | ||
276 | } | ||