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1 | <?php |
2 | |
3 | namespace Miniframe\Statistics\Service; |
4 | |
5 | class Browscap |
6 | { |
7 | /** |
8 | * Download URL for the database file |
9 | * |
10 | * @var string |
11 | */ |
12 | protected $downloadUrl = 'https://browscap.org/stream?q=Lite_PHP_BrowsCapINI'; |
13 | |
14 | /** |
15 | * Filename for the .ini database file |
16 | * |
17 | * @var string |
18 | */ |
19 | protected $iniPath; |
20 | /** |
21 | * Filename for the .php database file |
22 | * |
23 | * @var string |
24 | */ |
25 | protected $phpPath; |
26 | |
27 | /** |
28 | * Initiates the Browscap class |
29 | * |
30 | * @param string $browscapFolder The folder in which the database files can be stored. |
31 | */ |
32 | public function __construct(string $browscapFolder) |
33 | { |
34 | if (!is_dir($browscapFolder)) { |
35 | mkdir($browscapFolder, 0777, true); |
36 | } |
37 | $this->iniPath = rtrim($browscapFolder, '/') . '/browscap.ini'; |
38 | $this->phpPath = rtrim($browscapFolder, '/') . '/browscap.php'; |
39 | } |
40 | |
41 | /** |
42 | * Returns information about a browser |
43 | * |
44 | * @param string $userAgent The user agent. |
45 | * |
46 | * @return array |
47 | */ |
48 | public function getBrowser(string $userAgent): array |
49 | { |
50 | // First try native PHP way |
51 | if (ini_get('browscap')) { |
52 | $result = get_browser($userAgent, true); |
53 | if ($result) { |
54 | return $result; |
55 | } |
56 | } |
57 | |
58 | // Resolve the user agent |
59 | require $this->phpPath; /* @var $result array */ |
60 | |
61 | // If a parent is set, resolve the parent |
62 | if (isset($result['Parent'])) { |
63 | $result = array_merge($this->getBrowser($result['Parent']), $result); |
64 | unset($result['Parent']); |
65 | } |
66 | |
67 | return $result; |
68 | } |
69 | |
70 | /** |
71 | * Updates and interprets the database |
72 | * |
73 | * @return void |
74 | */ |
75 | public function getDatabase(): void |
76 | { |
77 | // Download file |
78 | $fh = fopen($this->iniPath, 'wb'); |
79 | $ch = curl_init(); |
80 | curl_setopt_array($ch, [ |
81 | CURLOPT_URL => $this->downloadUrl, |
82 | CURLOPT_HTTPGET => true, |
83 | CURLOPT_HEADER => false, |
84 | CURLOPT_FILE => $fh, |
85 | ]); |
86 | curl_exec($ch); |
87 | curl_close($ch); |
88 | fclose($fh); |
89 | |
90 | // Convert ini file to simple PHP file |
91 | $ini = fopen($this->iniPath, 'r'); |
92 | $php = fopen($this->phpPath, 'w'); |
93 | fputs($php, '<?php' . PHP_EOL); |
94 | fputs($php, '// File generated by ' . __FILE__ . PHP_EOL); |
95 | fputs($php, '// Do NOT modify this manually!' . PHP_EOL); |
96 | fputs($php, '$result = array();' . PHP_EOL); |
97 | $first = true; |
98 | while ($row = fgets($ini, 1024)) { |
99 | if (substr($row, 0, 1) == '[') { |
100 | if (!$first) { |
101 | fputs($php, '} else'); |
102 | } |
103 | $first = false; |
104 | $regex = '/^' |
105 | . str_replace(['\\*', '\\?'], ['.*', '.'], preg_quote(substr(trim($row), 1, -1), '/')) |
106 | . '$/i'; |
107 | fputs($php, 'if (preg_match(' . var_export($regex, true) . ', $userAgent)) {' . PHP_EOL); |
108 | } elseif ($row && substr($row, 0, 1) != ';' && strpos($row, '=') !== false) { |
109 | $parts = explode('=', $row, 2); |
110 | fputs( |
111 | $php, |
112 | "\t\$result[" . static::quoteVar($parts[0]) . "] = " |
113 | . static::quoteVar($parts[1]) . ';' . PHP_EOL |
114 | ); |
115 | } |
116 | } |
117 | fputs($php, '}' . PHP_EOL); |
118 | fclose($php); |
119 | fclose($ini); |
120 | } |
121 | |
122 | /** |
123 | * Checks if a variable contains quotes, if not, add those |
124 | * |
125 | * @param string $var The variable. |
126 | * |
127 | * @return string |
128 | */ |
129 | protected static function quoteVar(string $var): string |
130 | { |
131 | $var = trim($var); |
132 | if (substr($var, 0, 1) == '"' && substr($var, -1) == '"') { |
133 | return $var; |
134 | } elseif (substr($var, 0, 1) == "'" && substr($var, -1) == "'") { |
135 | return $var; |
136 | } |
137 | return var_export($var, true); |
138 | } |
139 | } |