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2 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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511 | daniel-mar | 5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
2 | daniel-mar | 6 | * |
7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
20 | function insertWhitespace($str, $index) { |
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21 | return substr($str, 0, $index) . ' ' . substr($str, $index); |
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22 | } |
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23 | |||
24 | function js_escape($data) { |
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25 | // TODO.... json_encode?? |
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289 | daniel-mar | 26 | $data = str_replace('\\', '\\\\', $data); |
27 | $data = str_replace('\'', '\\\'', $data); |
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28 | return "'" . $data . "'"; |
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2 | daniel-mar | 29 | } |
30 | |||
11 | daniel-mar | 31 | function trim_br($html) { |
386 | daniel-mar | 32 | $count = 0; |
11 | daniel-mar | 33 | do { $html = preg_replace('@^\s*<\s*br\s*/{0,1}\s*>@isU', '', $html, -1, $count); } while ($count > 0); // left trim |
34 | do { $html = preg_replace('@<\s*br\s*/{0,1}\s*>\s*$@isU', '', $html, -1, $count); } while ($count > 0); // right trim |
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35 | return $html; |
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36 | } |
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74 | daniel-mar | 37 | |
453 | daniel-mar | 38 | function generateRandomString($length) { |
653 | daniel-mar | 39 | // Note: This function can be used in temporary file names, so you |
40 | // may not generate illegal file name characters. |
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453 | daniel-mar | 41 | $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
42 | $charactersLength = strlen($characters); |
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43 | $randomString = ''; |
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44 | for ($i = 0; $i < $length; $i++) { |
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45 | $randomString .= $characters[rand(0, $charactersLength - 1)]; |
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46 | } |
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47 | return $randomString; |
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48 | } |
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49 | |||
74 | daniel-mar | 50 | function verify_private_public_key($privKey, $pubKey) { |
721 | daniel-mar | 51 | if (!function_exists('openssl_public_encrypt')) return false; |
74 | daniel-mar | 52 | try { |
53 | if (empty($privKey)) return false; |
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54 | if (empty($pubKey)) return false; |
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453 | daniel-mar | 55 | $data = generateRandomString(25); |
386 | daniel-mar | 56 | $encrypted = ''; |
57 | $decrypted = ''; |
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74 | daniel-mar | 58 | if (!@openssl_public_encrypt($data, $encrypted, $pubKey)) return false; |
59 | if (!@openssl_private_decrypt($encrypted, $decrypted, $privKey)) return false; |
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60 | return $decrypted == $data; |
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61 | } catch (Exception $e) { |
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62 | return false; |
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63 | } |
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64 | } |
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65 | |||
66 | function smallhash($data) { // get 31 bits from SHA1. Values 0..2147483647 |
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250 | daniel-mar | 67 | return (hexdec(substr(sha1($data),-4*2)) & 0x7FFFFFFF); |
74 | daniel-mar | 68 | } |
180 | daniel-mar | 69 | |
182 | daniel-mar | 70 | function split_firstname_lastname($name) { |
71 | $ary = explode(' ', $name); |
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72 | $last_name = array_pop($ary); |
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73 | $first_name = implode(' ', $ary); |
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74 | return array($first_name, $last_name); |
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75 | } |
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76 | |||
180 | daniel-mar | 77 | function originHeaders() { |
78 | // CORS |
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79 | // Author: Till Wehowski |
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426 | daniel-mar | 80 | // TODO: add to class OIDplus |
182 | daniel-mar | 81 | |
180 | daniel-mar | 82 | header("Access-Control-Allow-Credentials: true"); |
83 | header("Access-Control-Allow-Origin: ".strip_tags(((isset($_SERVER['HTTP_ORIGIN'])) ? $_SERVER['HTTP_ORIGIN'] : "*"))); |
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84 | |||
85 | header("Access-Control-Allow-Headers: If-None-Match, X-Requested-With, Origin, X-Frdlweb-Bugs, Etag, X-Forgery-Protection-Token, X-CSRF-Token"); |
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86 | |||
87 | if (isset($_SERVER['HTTP_ORIGIN'])) { |
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88 | header('X-Frame-Options: ALLOW-FROM '.$_SERVER['HTTP_ORIGIN']); |
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89 | } else { |
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90 | header_remove("X-Frame-Options"); |
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91 | } |
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92 | |||
93 | $expose = array('Etag', 'X-CSRF-Token'); |
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94 | foreach (headers_list() as $num => $header) { |
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95 | $h = explode(':', $header); |
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96 | $expose[] = trim($h[0]); |
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97 | } |
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98 | header("Access-Control-Expose-Headers: ".implode(',',$expose)); |
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99 | |||
100 | header("Vary: Origin"); |
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101 | } |
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236 | daniel-mar | 102 | |
103 | function get_calling_function() { |
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104 | $ex = new Exception(); |
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105 | $trace = $ex->getTrace(); |
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360 | daniel-mar | 106 | if (!isset($trace[2])) return _L('(main)'); |
236 | daniel-mar | 107 | $final_call = $trace[2]; |
108 | return $final_call['file'].':'.$final_call['line'].'/'.$final_call['function'].'()'; |
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109 | } |
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346 | daniel-mar | 110 | |
111 | if (!function_exists('mb_wordwrap')) { |
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112 | function mb_wordwrap($str, $width = 75, $break = "\n", $cut = false) { |
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113 | // https://stackoverflow.com/a/4988494/488539 |
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114 | $lines = explode($break, $str); |
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115 | foreach ($lines as &$line) { |
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116 | $line = rtrim($line); |
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117 | if (mb_strlen($line) <= $width) { |
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118 | continue; |
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119 | } |
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120 | $words = explode(' ', $line); |
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121 | $line = ''; |
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122 | $actual = ''; |
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123 | foreach ($words as $word) { |
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124 | if (mb_strlen($actual.$word) <= $width) { |
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125 | $actual .= $word.' '; |
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126 | } else { |
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127 | if ($actual != '') { |
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128 | $line .= rtrim($actual).$break; |
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129 | } |
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130 | $actual = $word; |
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131 | if ($cut) { |
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132 | while (mb_strlen($actual) > $width) { |
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133 | $line .= mb_substr($actual, 0, $width).$break; |
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134 | $actual = mb_substr($actual, $width); |
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135 | } |
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136 | } |
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137 | $actual .= ' '; |
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138 | } |
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139 | } |
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140 | $line .= trim($actual); |
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141 | } |
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142 | return implode($break, $lines); |
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143 | } |
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144 | } |
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355 | daniel-mar | 145 | |
379 | daniel-mar | 146 | function httpOutWithETag($out, $contentType, $filename='') { |
147 | $etag = md5($out); |
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148 | header("Etag: $etag"); |
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149 | header("Content-MD5: $etag"); // RFC 2616 clause 14.15 |
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150 | if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && (trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag)) { |
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151 | header("HTTP/1.1 304 Not Modified"); |
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152 | } else { |
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153 | header("Content-Type: $contentType"); |
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154 | if (!empty($filename)) { |
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155 | header('Content-Disposition:inline; filename="'.$filename.'"'); |
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156 | } |
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157 | echo $out; |
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158 | } |
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159 | die(); |
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160 | } |
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161 | |||
360 | daniel-mar | 162 | function my_vsprintf($str, $args) { |
163 | $n = 1; |
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164 | foreach ($args as $val) { |
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165 | $str = str_replace("%$n", $val, $str); |
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166 | $n++; |
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167 | } |
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370 | daniel-mar | 168 | $str = str_replace("%%", "%", $str); |
360 | daniel-mar | 169 | return $str; |
170 | } |
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171 | |||
355 | daniel-mar | 172 | function _L($str, ...$sprintfArgs) { |
401 | daniel-mar | 173 | static $translation_array = array(); |
174 | static $translation_loaded = null; |
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175 | |||
506 | daniel-mar | 176 | $str = trim($str); |
177 | |||
438 | daniel-mar | 178 | if (!class_exists('OIDplus')) { |
179 | return my_vsprintf($str, $sprintfArgs); |
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180 | } |
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181 | |||
360 | daniel-mar | 182 | $lang = OIDplus::getCurrentLang(); |
468 | daniel-mar | 183 | $ta = OIDplus::getTranslationArray($lang); |
184 | $res = (isset($ta[$lang]) && isset($ta[$lang][$str])) ? $ta[$lang][$str] : $str; |
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360 | daniel-mar | 185 | |
186 | $res = str_replace('###', OIDplus::baseConfig()->getValue('TABLENAME_PREFIX', ''), $res); |
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187 | |||
188 | $res = my_vsprintf($res, $sprintfArgs); |
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189 | |||
190 | return $res; |
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370 | daniel-mar | 191 | } |
386 | daniel-mar | 192 | |
552 | daniel-mar | 193 | function _CheckParamExists($params, $key) { |
698 | daniel-mar | 194 | if (class_exists('OIDplusException')) { |
195 | if (!isset($params[$key])) throw new OIDplusException(_L('Parameter %1 is missing', $key)); |
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196 | } else { |
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197 | if (!isset($params[$key])) throw new Exception(_L('Parameter %1 is missing', $key)); |
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198 | } |
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552 | daniel-mar | 199 | } |
200 | |||
721 | daniel-mar | 201 | function convert_to_utf8_no_bom($cont) { |
202 | $encoding = mb_detect_encoding($cont, mb_detect_order(), true); |
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203 | |||
204 | if (($encoding !== false) && ($encoding !== 'ASCII') && ($encoding !== 'UTF-8')) { |
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205 | $cont = iconv($encoding, 'UTF-8//IGNORE', $cont); |
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206 | } |
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207 | |||
208 | // Remove BOM |
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386 | daniel-mar | 209 | $bom = pack('H*','EFBBBF'); |
210 | $cont = preg_replace("/^$bom/", '', $cont); |
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721 | daniel-mar | 211 | return $cont; |
212 | } |
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386 | daniel-mar | 213 | |
721 | daniel-mar | 214 | function extractHtmlContents($cont) { |
215 | // make sure the program works even if the user provided HTML is not UTF-8 |
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216 | $cont = convert_to_utf8_no_bom($cont); |
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217 | |||
386 | daniel-mar | 218 | $out_js = ''; |
219 | $m = array(); |
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220 | preg_match_all('@<script[^>]*>(.+)</script>@ismU', $cont, $m); |
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221 | foreach ($m[1] as $x) { |
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222 | $out_js = $x . "\n\n"; |
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223 | } |
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224 | |||
225 | $out_css = ''; |
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226 | $m = array(); |
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227 | preg_match_all('@<style[^>]*>(.+)</style>@ismU', $cont, $m); |
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228 | foreach ($m[1] as $x) { |
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229 | $out_css = $x . "\n\n"; |
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230 | } |
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231 | |||
232 | $out_html = $cont; |
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233 | $out_html = preg_replace('@^(.+)<body[^>]*>@isU', '', $out_html); |
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234 | $out_html = preg_replace('@</body>.+$@isU', '', $out_html); |
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235 | $out_html = preg_replace('@<title>.+</title>@isU', '', $out_html); |
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236 | $out_html = preg_replace('@<h1>.+</h1>@isU', '', $out_html, 1); |
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237 | $out_html = preg_replace('@<script[^>]*>(.+)</script>@ismU', '', $out_html); |
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238 | $out_html = preg_replace('@<style[^>]*>(.+)</style>@ismU', '', $out_html); |
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239 | |||
240 | return array($out_html, $out_js, $out_css); |
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392 | daniel-mar | 241 | } |
242 | |||
400 | daniel-mar | 243 | function sha3_512($password, $raw_output=false) { |
392 | daniel-mar | 244 | if (version_compare(PHP_VERSION, '7.1.0') >= 0) { |
400 | daniel-mar | 245 | return hash('sha3-512', $password, $raw_output); |
392 | daniel-mar | 246 | } else { |
400 | daniel-mar | 247 | return bb\Sha3\Sha3::hash($password, 512, $raw_output); |
392 | daniel-mar | 248 | } |
249 | } |
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486 | daniel-mar | 250 | |
710 | daniel-mar | 251 | function sha3_512_hmac($message, $key, $raw_output=false) { |
252 | // RFC 2104 HMAC |
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253 | if (version_compare(PHP_VERSION, '7.1.0') >= 0) { |
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254 | return hash_hmac('sha3-512', $message, $key, $raw_output); |
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255 | } else { |
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256 | $blocksize = 576; // block size of sha-512! |
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257 | |||
258 | if (strlen($key) > ($blocksize/8)) { |
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259 | $k_ = sha3_512($key,true); |
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260 | } else { |
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261 | $k_ = $key; |
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262 | } |
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263 | |||
264 | $k_opad = str_repeat(chr(0x5C),($blocksize/8)); |
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265 | $k_ipad = str_repeat(chr(0x36),($blocksize/8)); |
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266 | for ($i=0; $i<strlen($k_); $i++) { |
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267 | $k_opad[$i] = $k_opad[$i] ^ $k_[$i]; |
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268 | $k_ipad[$i] = $k_ipad[$i] ^ $k_[$i]; |
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269 | } |
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270 | |||
271 | return sha3_512($k_opad . sha3_512($k_ipad . $message, true)); |
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272 | } |
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273 | } |
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274 | |||
625 | daniel-mar | 275 | if (!function_exists('str_ends_with')) { |
276 | // PHP 7.x compatibility |
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277 | function str_ends_with($haystack, $needle) { |
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278 | $length = strlen($needle); |
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279 | return $length > 0 ? substr($haystack, -$length) === $needle : true; |
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280 | } |
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281 | } |
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282 | |||
283 | if (!function_exists('str_starts_with')) { |
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284 | // PHP 7.x compatibility |
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285 | function str_starts_with($haystack, $needle) { |
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286 | return strpos($haystack, $needle) === 0; |
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287 | } |
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288 | } |
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289 | |||
632 | daniel-mar | 290 | function rec_is_dir($dir) { |
719 | daniel-mar | 291 | $dirs = @glob($dir); |
292 | if ($dirs) foreach ($dirs as $dir) { |
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632 | daniel-mar | 293 | if (is_dir($dir)) return true; |
294 | } |
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295 | return false; |
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296 | } |
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297 | |||
641 | daniel-mar | 298 | function isInternetExplorer() { |
299 | // see also includes/oidplus_base.js |
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300 | $ua = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : ''; |
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301 | return ((strpos($ua,'MSIE ') !== false) || (strpos($ua,'Trident/') !== false)); |
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302 | } |
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653 | daniel-mar | 303 | |
304 | function url_get_contents($url) { |
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305 | if (function_exists('curl_init')) { |
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306 | $ch = curl_init(); |
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698 | daniel-mar | 307 | if (class_exists('OIDplus')) { |
308 | if (ini_get('curl.cainfo') == '') curl_setopt($ch, CURLOPT_CAINFO, OIDplus::localpath() . 'vendor/cacert.pem'); |
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309 | } |
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653 | daniel-mar | 310 | curl_setopt($ch, CURLOPT_URL, $url); |
715 | daniel-mar | 311 | curl_setopt($ch, CURLOPT_USERAGENT, 'ViaThinkSoft-OIDplus/2.0'); |
653 | daniel-mar | 312 | curl_setopt($ch, CURLOPT_POST, 0); |
313 | curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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314 | curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); |
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315 | curl_setopt($ch, CURLOPT_AUTOREFERER, true); |
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316 | if (!($res = @curl_exec($ch))) return false; |
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317 | curl_close($ch); |
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318 | } else { |
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716 | daniel-mar | 319 | $opts = [ |
320 | "http" => [ |
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321 | "method" => "GET", |
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322 | "header" => "User-Agent: ViaThinkSoft-OIDplus/2.0\r\n" |
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323 | ] |
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324 | ]; |
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325 | $context = stream_context_create($opts); |
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326 | $res = @file_get_contents($url, false, $context); |
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653 | daniel-mar | 327 | if ($res === false) return false; |
328 | } |
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329 | return $res; |
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660 | daniel-mar | 330 | } |