[23] | 1 | <?php |
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| 2 | /** |
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[362] | 3 | * The Strangecode Codebase - a general application development framework for PHP |
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| 4 | * For details visit the project site: <http://trac.strangecode.com/codebase/> |
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[396] | 5 | * Copyright 2001-2012 Strangecode, LLC |
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[454] | 6 | * |
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[362] | 7 | * This file is part of The Strangecode Codebase. |
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| 8 | * |
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| 9 | * The Strangecode Codebase is free software: you can redistribute it and/or |
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| 10 | * modify it under the terms of the GNU General Public License as published by the |
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| 11 | * Free Software Foundation, either version 3 of the License, or (at your option) |
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| 12 | * any later version. |
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[454] | 13 | * |
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[362] | 14 | * The Strangecode Codebase is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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| 17 | * details. |
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[454] | 18 | * |
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[362] | 19 | * You should have received a copy of the GNU General Public License along with |
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| 20 | * The Strangecode Codebase. If not, see <http://www.gnu.org/licenses/>. |
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| 21 | */ |
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| 22 | |
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[460] | 23 | /* |
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| 24 | * Email.inc.php |
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| 25 | * |
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| 26 | * Easy email template usage. |
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| 27 | * |
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| 28 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 29 | * @version 1.0 |
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| 30 | * |
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| 31 | * Example of use: |
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| 32 | --------------------------------------------------------------------- |
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| 33 | // Setup email object. |
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[23] | 34 | $email = new Email(array( |
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| 35 | 'to' => array($frm['email'], 'q@lovemachine.local'), |
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[136] | 36 | 'from' => sprintf('%s <%s>', $app->getParam('site_name'), $app->getParam('site_email')), |
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[24] | 37 | 'subject' => 'Your account has been activated', |
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[23] | 38 | )); |
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| 39 | $email->setTemplate('email_registration_confirm.ihtml'); |
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[41] | 40 | // $email->setString('Or you can pass your message body as a string, also with {VARIABLES}.'); |
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[23] | 41 | $email->replace(array( |
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[136] | 42 | 'site_name' => $app->getParam('site_name'), |
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| 43 | 'site_url' => $app->getParam('site_url'), |
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[23] | 44 | 'username' => $frm['username'], |
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| 45 | 'password' => $frm['password1'], |
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| 46 | )); |
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| 47 | if ($email->send()) { |
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[136] | 48 | $app->raiseMsg(sprintf(_("A confirmation email has been sent to %s."), $frm['email']), MSG_SUCCESS, __FILE__, __LINE__); |
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[23] | 49 | } else { |
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[136] | 50 | $app->logMsg(sprintf('Error sending confirmation email to address %s', $frm['email']), LOG_NOTICE, __FILE__, __LINE__); |
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[23] | 51 | } |
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[460] | 52 | --------------------------------------------------------------------- |
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| 53 | */ |
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[136] | 54 | |
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[23] | 55 | class Email { |
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| 56 | |
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[24] | 57 | // Default parameters, to be overwritten by setParam() and read with getParam() |
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[484] | 58 | protected $_params = array( |
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[23] | 59 | 'to' => null, |
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| 60 | 'from' => null, |
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| 61 | 'subject' => null, |
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[38] | 62 | 'headers' => null, |
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[490] | 63 | 'envelope_sender_address' => null, // AKA the bounce-to address. Will default to 'from' if left null. |
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[212] | 64 | 'regex' => null, |
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[454] | 65 | |
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[212] | 66 | // A single carriage return (\n) should terminate lines for locally injected mail. |
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| 67 | // A carriage return + line-feed (\r\n) should be used if sending mail directly with SMTP. |
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| 68 | 'crlf' => "\n", |
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[454] | 69 | |
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[212] | 70 | // RFC 2822 says line length MUST be no more than 998 characters, and SHOULD be no more than 78 characters, excluding the CRLF. |
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| 71 | // http://mailformat.dan.info/body/linelength.html |
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| 72 | 'wrap' => true, |
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| 73 | 'line_length' => 75, |
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[23] | 74 | ); |
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[42] | 75 | |
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[24] | 76 | // String that contains the email body. |
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[484] | 77 | protected $_template; |
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[42] | 78 | |
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[24] | 79 | // String that contains the email body after replacements. |
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[484] | 80 | protected $_template_replaced; |
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[23] | 81 | |
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| 82 | /** |
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| 83 | * Constructor. |
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| 84 | * |
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| 85 | * @access public |
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| 86 | * @param array $params Array of object parameters. |
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| 87 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 88 | * @since 28 Nov 2005 12:59:41 |
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| 89 | */ |
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[468] | 90 | public function __construct($params=null) |
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[23] | 91 | { |
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[334] | 92 | // The regex used in validEmail(). Set here instead of in the default _params above so we can use the concatenation . dot. |
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[357] | 93 | // This matches a (valid) email address as complex as: |
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[399] | 94 | // "Jane & Bob Smith" <bob&smith's/dep=sales!@smith-wick.ca.us > (Sales department) |
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[24] | 95 | // ...and something as simple as: |
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| 96 | // x@x.com |
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[399] | 97 | $this->setParam(array('regex' => '/^(?:(?:"[^"]*?"\s*|[^,@]*)(<\s*)|(?:"[^"]*?"|[^,@]*)\s+|)' // Display name |
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[357] | 98 | . '((?:[^.<>\s@",\[\]]+[^<>\s@",\[\]])*[^.<>\s@",\[\]]+)' // Local-part |
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[23] | 99 | . '@' // @ |
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| 100 | . '((?:(\[)|[A-Z0-9]?)' // Domain, first char |
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| 101 | . '(?(4)' // Domain conditional for if first domain char is [ |
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| 102 | . '(?:[0-9]{1,3}\.){3}[0-9]{1,3}\]' // TRUE, matches IP address |
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| 103 | . '|' |
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| 104 | . '[.-]?(?:[A-Z0-9]+[-.])*(?:[A-Z0-9]+\.)+[A-Z]{2,6}))' // FALSE, matches domain name |
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| 105 | . '(?(1)' // Comment conditional for if initial < exists |
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[490] | 106 | . '(?:\s*>\s*|>\s+\([^,@]+\)\s*)' // TRUE, ensure ending > |
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[23] | 107 | . '|' |
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| 108 | . '(?:|\s*|\s+\([^,@]+\)\s*))$/i')); // FALSE ensure there is no ending > |
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| 109 | |
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[25] | 110 | if (isset($params)) { |
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| 111 | $this->setParam($params); |
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| 112 | } |
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[23] | 113 | } |
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| 114 | |
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| 115 | /** |
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| 116 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
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| 117 | * |
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| 118 | * @access public |
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| 119 | * @param array $params Array of parameters (key => val pairs). |
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| 120 | */ |
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[468] | 121 | public function setParam($params) |
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[23] | 122 | { |
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[479] | 123 | $app =& App::getInstance(); |
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[454] | 124 | |
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[23] | 125 | if (isset($params) && is_array($params)) { |
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| 126 | // Enforce valid email addresses. |
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| 127 | if (isset($params['to']) && !$this->validEmail($params['to'])) { |
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| 128 | $params['to'] = null; |
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| 129 | } |
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| 130 | if (isset($params['from']) && !$this->validEmail($params['from'])) { |
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| 131 | $params['from'] = null; |
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| 132 | } |
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[490] | 133 | if (isset($params['envelope_sender_address']) && !$this->validEmail($params['envelope_sender_address'])) { |
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| 134 | $params['envelope_sender_address'] = null; |
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| 135 | } |
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[23] | 136 | |
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| 137 | // Merge new parameters with old overriding only those passed. |
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| 138 | $this->_params = array_merge($this->_params, $params); |
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| 139 | } else { |
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[136] | 140 | $app->logMsg(sprintf('Parameters are not an array: %s', $params), LOG_ERR, __FILE__, __LINE__); |
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[23] | 141 | } |
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| 142 | } |
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| 143 | |
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| 144 | /** |
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| 145 | * Return the value of a parameter, if it exists. |
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| 146 | * |
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| 147 | * @access public |
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| 148 | * @param string $param Which parameter to return. |
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| 149 | * @return mixed Configured parameter value. |
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| 150 | */ |
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[468] | 151 | public function getParam($param) |
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[23] | 152 | { |
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[479] | 153 | $app =& App::getInstance(); |
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[454] | 154 | |
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[478] | 155 | if (array_key_exists($param, $this->_params)) { |
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[23] | 156 | return $this->_params[$param]; |
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| 157 | } else { |
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[146] | 158 | $app->logMsg(sprintf('Parameter is not set: %s', $param), LOG_DEBUG, __FILE__, __LINE__); |
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[23] | 159 | return null; |
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| 160 | } |
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| 161 | } |
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| 162 | |
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| 163 | /** |
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| 164 | * Loads template from file to generate email body. |
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| 165 | * |
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| 166 | * @access public |
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| 167 | * @param string $template Filename of email template. |
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| 168 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 169 | * @since 28 Nov 2005 12:56:23 |
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| 170 | */ |
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[468] | 171 | public function setTemplate($template) |
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[23] | 172 | { |
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[479] | 173 | $app =& App::getInstance(); |
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[454] | 174 | |
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[23] | 175 | // Load file, using include_path. |
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| 176 | if (!$this->_template = file_get_contents($template, true)) { |
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[136] | 177 | $app->logMsg(sprintf('Email template file does not exist: %s', $template), LOG_ERR, __FILE__, __LINE__); |
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[23] | 178 | $this->_template = null; |
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| 179 | $this->_template_replaced = null; |
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| 180 | return false; |
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| 181 | } |
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[24] | 182 | // This could be a new template, so reset the _template_replaced. |
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[23] | 183 | $this->_template_replaced = null; |
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| 184 | return true; |
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| 185 | } |
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| 186 | |
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| 187 | /** |
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| 188 | * Loads template from string to generate email body. |
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| 189 | * |
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| 190 | * @access public |
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| 191 | * @param string $template Filename of email template. |
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| 192 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 193 | * @since 28 Nov 2005 12:56:23 |
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| 194 | */ |
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[468] | 195 | public function setString($string) |
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[23] | 196 | { |
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[479] | 197 | $app =& App::getInstance(); |
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[454] | 198 | |
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[41] | 199 | if ('' == trim($string)) { |
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[136] | 200 | $app->logMsg(sprintf('Empty string provided.', null), LOG_ERR, __FILE__, __LINE__); |
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[23] | 201 | $this->_template_replaced = null; |
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| 202 | return false; |
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| 203 | } else { |
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[41] | 204 | $this->_template = $string; |
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[24] | 205 | // This could be a new template, so reset the _template_replaced. |
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[23] | 206 | $this->_template_replaced = null; |
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| 207 | return true; |
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| 208 | } |
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| 209 | } |
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[42] | 210 | |
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[23] | 211 | /** |
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| 212 | * Replace variables in template with argument data. |
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| 213 | * |
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| 214 | * @access public |
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| 215 | * @param array $replacements Array keys are the values to search for, array vales are the replacement values. |
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| 216 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 217 | * @since 28 Nov 2005 13:08:51 |
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| 218 | */ |
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[468] | 219 | public function replace($replacements) |
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[23] | 220 | { |
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[479] | 221 | $app =& App::getInstance(); |
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[454] | 222 | |
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[24] | 223 | // Ensure template exists. |
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[23] | 224 | if (!isset($this->_template)) { |
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[136] | 225 | $app->logMsg(sprintf('Cannot replace variables, no template defined.', null), LOG_ERR, __FILE__, __LINE__); |
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[42] | 226 | return false; |
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[23] | 227 | } |
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[42] | 228 | |
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[24] | 229 | // Ensure replacements argument is an array. |
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[23] | 230 | if (!is_array($replacements)) { |
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[136] | 231 | $app->logMsg(sprintf('Cannot replace variables, invalid replacements.', null), LOG_ERR, __FILE__, __LINE__); |
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[42] | 232 | return false; |
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[23] | 233 | } |
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[42] | 234 | |
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[23] | 235 | // Apply regex pattern to search elements. |
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| 236 | $search = array_keys($replacements); |
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[247] | 237 | array_walk($search, create_function('&$v', '$v = "{" . mb_strtoupper($v) . "}";')); |
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[23] | 238 | |
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[35] | 239 | // Replacement values. |
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[23] | 240 | $replace = array_values($replacements); |
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[42] | 241 | |
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[24] | 242 | // Search and replace all values at once. |
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[216] | 243 | $this->_template_replaced = str_replace($search, $replace, $this->_template); |
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[23] | 244 | } |
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| 245 | |
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| 246 | /** |
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| 247 | * Send email using PHP's mail() function. |
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| 248 | * |
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| 249 | * @access public |
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| 250 | * @param string $to |
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| 251 | * @param string $from |
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| 252 | * @param string $subject |
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| 253 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 254 | * @since 28 Nov 2005 12:56:09 |
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| 255 | */ |
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[468] | 256 | public function send($to=null, $from=null, $subject=null, $headers=null) |
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[23] | 257 | { |
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[479] | 258 | $app =& App::getInstance(); |
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[282] | 259 | |
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[24] | 260 | // Use arguments if provided. |
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[23] | 261 | if (isset($to)) { |
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[490] | 262 | $this->setParam(array('to' => $to)); |
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[23] | 263 | } |
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| 264 | if (isset($from)) { |
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[490] | 265 | $this->setParam(array('from' => $from)); |
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[23] | 266 | } |
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| 267 | if (isset($subject)) { |
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[490] | 268 | $this->setParam(array('subject' => $subject)); |
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[23] | 269 | } |
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[38] | 270 | if (isset($headers)) { |
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[490] | 271 | $this->setParam(array('headers' => $headers)); |
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[38] | 272 | } |
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[36] | 273 | |
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[24] | 274 | // Ensure required values exist. |
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[43] | 275 | if (!isset($this->_params['subject'])) { |
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[364] | 276 | $app->logMsg('Cannot send email. SUBJECT not defined.', LOG_ERR, __FILE__, __LINE__); |
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[23] | 277 | return false; |
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[43] | 278 | } else if (!isset($this->_template)) { |
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[136] | 279 | $app->logMsg(sprintf('Cannot send email: "%s". Template not set.', $this->_params['subject']), LOG_ERR, __FILE__, __LINE__); |
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[43] | 280 | return false; |
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[23] | 281 | } else if (!isset($this->_params['to'])) { |
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[136] | 282 | $app->logMsg(sprintf('Cannot send email: "%s". TO not defined.', $this->_params['subject']), LOG_NOTICE, __FILE__, __LINE__); |
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[23] | 283 | return false; |
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| 284 | } else if (!isset($this->_params['from'])) { |
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[136] | 285 | $app->logMsg(sprintf('Cannot send email: "%s". FROM not defined.', $this->_params['subject']), LOG_ERR, __FILE__, __LINE__); |
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[23] | 286 | return false; |
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| 287 | } |
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| 288 | |
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[24] | 289 | // Wrap email text body, using _template_replaced if replacements have been used, or just a fresh _template if not. |
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[212] | 290 | $final_body = isset($this->_template_replaced) ? $this->_template_replaced : $this->_template; |
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| 291 | if (false !== $this->getParam('wrap')) { |
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[454] | 292 | $final_body = wordwrap($final_body, $this->getParam('line_length'), $this->getParam('crlf')); |
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[212] | 293 | } |
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[24] | 294 | |
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| 295 | // Ensure all placeholders have been replaced. Find anything with {...} characters. |
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[23] | 296 | if (preg_match('/({[^}]+})/', $final_body, $unreplaced_match)) { |
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[311] | 297 | $app->logMsg(sprintf('Cannot send email. At least one variable left unreplaced in template: %s', (isset($unreplaced_match[1]) ? $unreplaced_match[1] : '')), LOG_ERR, __FILE__, __LINE__); |
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[23] | 298 | return false; |
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| 299 | } |
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[42] | 300 | |
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[24] | 301 | // Final "to" header can have multiple addresses if in an array. |
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[23] | 302 | $final_to = is_array($this->_params['to']) ? join(', ', $this->_params['to']) : $this->_params['to']; |
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[42] | 303 | |
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[24] | 304 | // From headers are custom headers. |
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[38] | 305 | $headers = array('From' => $this->_params['from']); |
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| 306 | |
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| 307 | // Additional headers. |
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| 308 | if (isset($this->_params['headers']) && is_array($this->_params['headers'])) { |
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| 309 | $headers = array_merge($this->_params['headers'], $headers); |
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| 310 | } |
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[42] | 311 | |
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[38] | 312 | // Process headers. |
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| 313 | $final_headers = array(); |
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| 314 | foreach ($headers as $key => $val) { |
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[490] | 315 | // Validate key and values. |
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[500] | 316 | if (empty($val)) { |
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| 317 | $app->logMsg(sprintf('Empty email header provided: %s', $key), LOG_DEBUG, __FILE__, __LINE__); |
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[490] | 318 | continue; |
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[424] | 319 | } |
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[500] | 320 | if (empty($key) || !is_string($key) || !is_string($val) || preg_match("/[\n\r]/", $key . $val) || preg_match('/[^\w-]/', $key)) { |
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| 321 | $app->logMsg(sprintf('Broken email header provided: %s=%s', $key, $val), LOG_WARNING, __FILE__, __LINE__); |
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| 322 | continue; |
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| 323 | } |
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[490] | 324 | // If the envelope_sender_address was given as a header, move it to the correct place. |
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| 325 | if ('envelope_sender_address' == $key) { |
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| 326 | $this->_params['envelope_sender_address'] = isset($this->_params['envelope_sender_address']) ? $this->_params['envelope_sender_address'] : $val; |
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| 327 | continue; |
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| 328 | } |
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[38] | 329 | $final_headers[] = sprintf('%s: %s', $key, $val); |
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| 330 | } |
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[212] | 331 | $final_headers = join($this->getParam('crlf'), $final_headers); |
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[42] | 332 | |
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[24] | 333 | // This is the address where delivery problems are sent to. We must strip off everything except the local@domain part. |
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[490] | 334 | if (isset($this->_params['envelope_sender_address'])) { |
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| 335 | $envelope_sender_address = sprintf('<%s>', trim($this->_params['envelope_sender_address'], '<>')); |
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| 336 | } else { |
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| 337 | $envelope_sender_address = preg_replace('/^.*<?([^\s@\[\]<>()]+\@[A-Za-z0-9.-]{1,}\.[A-Za-z]{2,5})>?$/iU', '$1', $this->_params['from']); |
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| 338 | } |
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[212] | 339 | if ('' != $envelope_sender_address && $this->validEmail($envelope_sender_address)) { |
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[490] | 340 | $additional_parameter = sprintf('-f %s', $envelope_sender_address); |
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[212] | 341 | } else { |
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[490] | 342 | $additional_parameter = ''; |
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[212] | 343 | } |
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[42] | 344 | |
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[36] | 345 | // Check for mail header injection attacks. |
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[212] | 346 | $full_mail_content = join($this->getParam('crlf'), array($final_to, $this->_params['subject'], $final_body)); |
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[293] | 347 | if (preg_match("/(^|[\n\r])(Content-Type|MIME-Version|Content-Transfer-Encoding|Bcc|Cc)\s*:/i", $full_mail_content)) { |
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[136] | 348 | $app->logMsg(sprintf('Mail header injection attack in content: %s', $full_mail_content), LOG_WARNING, __FILE__, __LINE__); |
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[36] | 349 | return false; |
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| 350 | } |
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[346] | 351 | |
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[454] | 352 | // Send email without 5th parameter if safemode is enabled. |
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[345] | 353 | if (ini_get('safe_mode')) { |
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[346] | 354 | $ret = mb_send_mail($final_to, $this->_params['subject'], $final_body, $final_headers); |
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[479] | 355 | } else { |
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[490] | 356 | $ret = mb_send_mail($final_to, $this->_params['subject'], $final_body, $final_headers, $additional_parameter); |
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[347] | 357 | } |
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[454] | 358 | |
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[346] | 359 | // Ensure message was successfully accepted for delivery. |
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| 360 | if ($ret) { |
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| 361 | $app->logMsg(sprintf('Email successfully sent to %s', $final_to), LOG_INFO, __FILE__, __LINE__); |
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| 362 | return true; |
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| 363 | } else { |
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[490] | 364 | $app->logMsg(sprintf('Email failure: %s, %s, %s, %s', $final_to, $this->_params['subject'], str_replace("\r\n", '\r\n', $final_headers), $additional_parameter), LOG_WARNING, __FILE__, __LINE__); |
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[346] | 365 | return false; |
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[454] | 366 | } |
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[23] | 367 | } |
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[42] | 368 | |
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[23] | 369 | /** |
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| 370 | * Validates an email address based on the recommendations in RFC 3696. |
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[42] | 371 | * Is more loose than restrictive, to allow the many valid variants of |
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[23] | 372 | * email addresses while catching the most common mistakes. Checks an array too. |
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| 373 | * http://www.faqs.org/rfcs/rfc822.html |
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| 374 | * http://www.faqs.org/rfcs/rfc2822.html |
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| 375 | * http://www.faqs.org/rfcs/rfc3696.html |
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| 376 | * http://www.faqs.org/rfcs/rfc1035.html |
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| 377 | * |
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| 378 | * @access public |
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| 379 | * @param mixed $email Address to check, string or array. |
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| 380 | * @return bool Validity of address. |
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| 381 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 382 | * @since 30 Nov 2005 22:00:50 |
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| 383 | */ |
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[468] | 384 | public function validEmail($email) |
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[23] | 385 | { |
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[479] | 386 | $app =& App::getInstance(); |
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[454] | 387 | |
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[24] | 388 | // If an array, check values recursively. |
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[23] | 389 | if (is_array($email)) { |
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| 390 | foreach ($email as $e) { |
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| 391 | if (!$this->validEmail($e)) { |
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| 392 | return false; |
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| 393 | } |
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| 394 | } |
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| 395 | return true; |
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| 396 | } else { |
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[334] | 397 | // To be valid email address must match regex and fit within the length constraints. |
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[247] | 398 | if (preg_match($this->getParam('regex'), $email, $e_parts) && mb_strlen($e_parts[2]) < 64 && mb_strlen($e_parts[3]) < 255) { |
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[24] | 399 | return true; |
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| 400 | } else { |
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[394] | 401 | $app->logMsg(sprintf('Invalid email address: %s', $email), LOG_INFO, __FILE__, __LINE__); |
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[23] | 402 | return false; |
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| 403 | } |
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| 404 | } |
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| 405 | } |
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| 406 | } |
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| 407 | |
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