[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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[502] | 55 | class Email |
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| 56 | { |
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[23] | 57 | |
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[24] | 58 | // Default parameters, to be overwritten by setParam() and read with getParam() |
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[484] | 59 | protected $_params = array( |
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[23] | 60 | 'to' => null, |
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| 61 | 'from' => null, |
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| 62 | 'subject' => null, |
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[38] | 63 | 'headers' => null, |
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[490] | 64 | 'envelope_sender_address' => null, // AKA the bounce-to address. Will default to 'from' if left null. |
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[212] | 65 | 'regex' => null, |
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[454] | 66 | |
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[212] | 67 | // A single carriage return (\n) should terminate lines for locally injected mail. |
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| 68 | // A carriage return + line-feed (\r\n) should be used if sending mail directly with SMTP. |
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| 69 | 'crlf' => "\n", |
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[454] | 70 | |
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[212] | 71 | // 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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| 72 | // http://mailformat.dan.info/body/linelength.html |
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| 73 | 'wrap' => true, |
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| 74 | 'line_length' => 75, |
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[23] | 75 | ); |
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[42] | 76 | |
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[24] | 77 | // String that contains the email body. |
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[484] | 78 | protected $_template; |
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[42] | 79 | |
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[24] | 80 | // String that contains the email body after replacements. |
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[484] | 81 | protected $_template_replaced; |
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[23] | 82 | |
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| 83 | /** |
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| 84 | * Constructor. |
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| 85 | * |
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| 86 | * @access public |
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| 87 | * @param array $params Array of object parameters. |
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| 88 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 89 | * @since 28 Nov 2005 12:59:41 |
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| 90 | */ |
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[468] | 91 | public function __construct($params=null) |
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[23] | 92 | { |
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[334] | 93 | // 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] | 94 | // This matches a (valid) email address as complex as: |
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[399] | 95 | // "Jane & Bob Smith" <bob&smith's/dep=sales!@smith-wick.ca.us > (Sales department) |
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[24] | 96 | // ...and something as simple as: |
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| 97 | // x@x.com |
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[399] | 98 | $this->setParam(array('regex' => '/^(?:(?:"[^"]*?"\s*|[^,@]*)(<\s*)|(?:"[^"]*?"|[^,@]*)\s+|)' // Display name |
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[357] | 99 | . '((?:[^.<>\s@",\[\]]+[^<>\s@",\[\]])*[^.<>\s@",\[\]]+)' // Local-part |
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[23] | 100 | . '@' // @ |
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| 101 | . '((?:(\[)|[A-Z0-9]?)' // Domain, first char |
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| 102 | . '(?(4)' // Domain conditional for if first domain char is [ |
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| 103 | . '(?:[0-9]{1,3}\.){3}[0-9]{1,3}\]' // TRUE, matches IP address |
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| 104 | . '|' |
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| 105 | . '[.-]?(?:[A-Z0-9]+[-.])*(?:[A-Z0-9]+\.)+[A-Z]{2,6}))' // FALSE, matches domain name |
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| 106 | . '(?(1)' // Comment conditional for if initial < exists |
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[490] | 107 | . '(?:\s*>\s*|>\s+\([^,@]+\)\s*)' // TRUE, ensure ending > |
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[23] | 108 | . '|' |
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| 109 | . '(?:|\s*|\s+\([^,@]+\)\s*))$/i')); // FALSE ensure there is no ending > |
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| 110 | |
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[25] | 111 | if (isset($params)) { |
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| 112 | $this->setParam($params); |
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| 113 | } |
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[23] | 114 | } |
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| 115 | |
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| 116 | /** |
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| 117 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
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| 118 | * |
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| 119 | * @access public |
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| 120 | * @param array $params Array of parameters (key => val pairs). |
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| 121 | */ |
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[468] | 122 | public function setParam($params) |
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[23] | 123 | { |
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[479] | 124 | $app =& App::getInstance(); |
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[454] | 125 | |
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[23] | 126 | if (isset($params) && is_array($params)) { |
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| 127 | // Enforce valid email addresses. |
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| 128 | if (isset($params['to']) && !$this->validEmail($params['to'])) { |
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| 129 | $params['to'] = null; |
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| 130 | } |
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| 131 | if (isset($params['from']) && !$this->validEmail($params['from'])) { |
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| 132 | $params['from'] = null; |
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| 133 | } |
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[490] | 134 | if (isset($params['envelope_sender_address']) && !$this->validEmail($params['envelope_sender_address'])) { |
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| 135 | $params['envelope_sender_address'] = null; |
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| 136 | } |
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[23] | 137 | |
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| 138 | // Merge new parameters with old overriding only those passed. |
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| 139 | $this->_params = array_merge($this->_params, $params); |
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| 140 | } else { |
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[136] | 141 | $app->logMsg(sprintf('Parameters are not an array: %s', $params), LOG_ERR, __FILE__, __LINE__); |
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[23] | 142 | } |
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| 143 | } |
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| 144 | |
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| 145 | /** |
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| 146 | * Return the value of a parameter, if it exists. |
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| 147 | * |
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| 148 | * @access public |
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| 149 | * @param string $param Which parameter to return. |
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| 150 | * @return mixed Configured parameter value. |
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| 151 | */ |
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[468] | 152 | public function getParam($param) |
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[23] | 153 | { |
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[479] | 154 | $app =& App::getInstance(); |
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[454] | 155 | |
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[478] | 156 | if (array_key_exists($param, $this->_params)) { |
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[23] | 157 | return $this->_params[$param]; |
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| 158 | } else { |
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[146] | 159 | $app->logMsg(sprintf('Parameter is not set: %s', $param), LOG_DEBUG, __FILE__, __LINE__); |
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[23] | 160 | return null; |
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| 161 | } |
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| 162 | } |
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| 163 | |
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| 164 | /** |
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| 165 | * Loads template from file to generate email body. |
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| 166 | * |
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| 167 | * @access public |
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| 168 | * @param string $template Filename of email template. |
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| 169 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 170 | * @since 28 Nov 2005 12:56:23 |
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| 171 | */ |
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[468] | 172 | public function setTemplate($template) |
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[23] | 173 | { |
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[479] | 174 | $app =& App::getInstance(); |
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[454] | 175 | |
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[23] | 176 | // Load file, using include_path. |
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| 177 | if (!$this->_template = file_get_contents($template, true)) { |
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[136] | 178 | $app->logMsg(sprintf('Email template file does not exist: %s', $template), LOG_ERR, __FILE__, __LINE__); |
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[23] | 179 | $this->_template = null; |
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| 180 | $this->_template_replaced = null; |
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| 181 | return false; |
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| 182 | } |
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[24] | 183 | // This could be a new template, so reset the _template_replaced. |
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[23] | 184 | $this->_template_replaced = null; |
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| 185 | return true; |
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| 186 | } |
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| 187 | |
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| 188 | /** |
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| 189 | * Loads template from string to generate email body. |
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| 190 | * |
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| 191 | * @access public |
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| 192 | * @param string $template Filename of email template. |
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| 193 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 194 | * @since 28 Nov 2005 12:56:23 |
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| 195 | */ |
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[468] | 196 | public function setString($string) |
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[23] | 197 | { |
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[479] | 198 | $app =& App::getInstance(); |
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[454] | 199 | |
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[41] | 200 | if ('' == trim($string)) { |
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[136] | 201 | $app->logMsg(sprintf('Empty string provided.', null), LOG_ERR, __FILE__, __LINE__); |
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[23] | 202 | $this->_template_replaced = null; |
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| 203 | return false; |
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| 204 | } else { |
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[41] | 205 | $this->_template = $string; |
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[24] | 206 | // This could be a new template, so reset the _template_replaced. |
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[23] | 207 | $this->_template_replaced = null; |
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| 208 | return true; |
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| 209 | } |
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| 210 | } |
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[42] | 211 | |
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[23] | 212 | /** |
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| 213 | * Replace variables in template with argument data. |
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| 214 | * |
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| 215 | * @access public |
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| 216 | * @param array $replacements Array keys are the values to search for, array vales are the replacement values. |
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| 217 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 218 | * @since 28 Nov 2005 13:08:51 |
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| 219 | */ |
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[468] | 220 | public function replace($replacements) |
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[23] | 221 | { |
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[479] | 222 | $app =& App::getInstance(); |
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[454] | 223 | |
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[24] | 224 | // Ensure template exists. |
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[23] | 225 | if (!isset($this->_template)) { |
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[136] | 226 | $app->logMsg(sprintf('Cannot replace variables, no template defined.', null), LOG_ERR, __FILE__, __LINE__); |
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[42] | 227 | return false; |
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[23] | 228 | } |
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[42] | 229 | |
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[24] | 230 | // Ensure replacements argument is an array. |
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[23] | 231 | if (!is_array($replacements)) { |
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[136] | 232 | $app->logMsg(sprintf('Cannot replace variables, invalid replacements.', null), LOG_ERR, __FILE__, __LINE__); |
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[42] | 233 | return false; |
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[23] | 234 | } |
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[42] | 235 | |
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[23] | 236 | // Apply regex pattern to search elements. |
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| 237 | $search = array_keys($replacements); |
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[247] | 238 | array_walk($search, create_function('&$v', '$v = "{" . mb_strtoupper($v) . "}";')); |
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[23] | 239 | |
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[35] | 240 | // Replacement values. |
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[23] | 241 | $replace = array_values($replacements); |
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[42] | 242 | |
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[24] | 243 | // Search and replace all values at once. |
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[216] | 244 | $this->_template_replaced = str_replace($search, $replace, $this->_template); |
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[23] | 245 | } |
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| 246 | |
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[502] | 247 | /* |
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| 248 | * Returns the body of the current email. This can be used to store the message that is being sent. |
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| 249 | * It will use the original template, or the replaced template if it has been processed. |
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| 250 | * |
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| 251 | * @access public |
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| 252 | * @return string Message body. |
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| 253 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 254 | * @version 1.0 |
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| 255 | * @since 18 Nov 2014 21:15:19 |
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| 256 | */ |
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| 257 | public function getBody() |
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| 258 | { |
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| 259 | $final_body = isset($this->_template_replaced) ? $this->_template_replaced : $this->_template; |
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| 260 | // Ensure all placeholders have been replaced. Find anything with {...} characters. |
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| 261 | if (preg_match('/({[^}]+})/', $final_body, $unreplaced_match)) { |
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| 262 | unset($unreplaced_match[0]); |
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| 263 | $app->logMsg(sprintf('Cannot get email body. Unreplaced variables in template: %s', getDump($unreplaced_match)), LOG_ERR, __FILE__, __LINE__); |
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| 264 | return false; |
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| 265 | } |
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| 266 | return $final_body; |
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| 267 | } |
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| 268 | |
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[23] | 269 | /** |
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| 270 | * Send email using PHP's mail() function. |
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| 271 | * |
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| 272 | * @access public |
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| 273 | * @param string $to |
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| 274 | * @param string $from |
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| 275 | * @param string $subject |
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| 276 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 277 | * @since 28 Nov 2005 12:56:09 |
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| 278 | */ |
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[468] | 279 | public function send($to=null, $from=null, $subject=null, $headers=null) |
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[23] | 280 | { |
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[479] | 281 | $app =& App::getInstance(); |
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[282] | 282 | |
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[24] | 283 | // Use arguments if provided. |
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[23] | 284 | if (isset($to)) { |
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[490] | 285 | $this->setParam(array('to' => $to)); |
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[23] | 286 | } |
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| 287 | if (isset($from)) { |
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[490] | 288 | $this->setParam(array('from' => $from)); |
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[23] | 289 | } |
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| 290 | if (isset($subject)) { |
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[490] | 291 | $this->setParam(array('subject' => $subject)); |
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[23] | 292 | } |
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[38] | 293 | if (isset($headers)) { |
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[490] | 294 | $this->setParam(array('headers' => $headers)); |
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[38] | 295 | } |
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[36] | 296 | |
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[24] | 297 | // Ensure required values exist. |
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[43] | 298 | if (!isset($this->_params['subject'])) { |
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[364] | 299 | $app->logMsg('Cannot send email. SUBJECT not defined.', LOG_ERR, __FILE__, __LINE__); |
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[23] | 300 | return false; |
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[43] | 301 | } else if (!isset($this->_template)) { |
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[136] | 302 | $app->logMsg(sprintf('Cannot send email: "%s". Template not set.', $this->_params['subject']), LOG_ERR, __FILE__, __LINE__); |
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[43] | 303 | return false; |
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[23] | 304 | } else if (!isset($this->_params['to'])) { |
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[136] | 305 | $app->logMsg(sprintf('Cannot send email: "%s". TO not defined.', $this->_params['subject']), LOG_NOTICE, __FILE__, __LINE__); |
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[23] | 306 | return false; |
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| 307 | } else if (!isset($this->_params['from'])) { |
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[136] | 308 | $app->logMsg(sprintf('Cannot send email: "%s". FROM not defined.', $this->_params['subject']), LOG_ERR, __FILE__, __LINE__); |
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[23] | 309 | return false; |
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| 310 | } |
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| 311 | |
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[24] | 312 | // Wrap email text body, using _template_replaced if replacements have been used, or just a fresh _template if not. |
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[212] | 313 | $final_body = isset($this->_template_replaced) ? $this->_template_replaced : $this->_template; |
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| 314 | if (false !== $this->getParam('wrap')) { |
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[454] | 315 | $final_body = wordwrap($final_body, $this->getParam('line_length'), $this->getParam('crlf')); |
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[212] | 316 | } |
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[24] | 317 | |
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| 318 | // Ensure all placeholders have been replaced. Find anything with {...} characters. |
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[23] | 319 | if (preg_match('/({[^}]+})/', $final_body, $unreplaced_match)) { |
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[502] | 320 | unset($unreplaced_match[0]); |
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| 321 | $app->logMsg(sprintf('Cannot send email. Unreplaced variables in template: %s', getDump($unreplaced_match)), LOG_ERR, __FILE__, __LINE__); |
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[23] | 322 | return false; |
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| 323 | } |
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[42] | 324 | |
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[24] | 325 | // Final "to" header can have multiple addresses if in an array. |
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[23] | 326 | $final_to = is_array($this->_params['to']) ? join(', ', $this->_params['to']) : $this->_params['to']; |
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[42] | 327 | |
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[24] | 328 | // From headers are custom headers. |
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[38] | 329 | $headers = array('From' => $this->_params['from']); |
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| 330 | |
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| 331 | // Additional headers. |
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| 332 | if (isset($this->_params['headers']) && is_array($this->_params['headers'])) { |
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| 333 | $headers = array_merge($this->_params['headers'], $headers); |
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| 334 | } |
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[42] | 335 | |
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[38] | 336 | // Process headers. |
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| 337 | $final_headers = array(); |
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| 338 | foreach ($headers as $key => $val) { |
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[490] | 339 | // Validate key and values. |
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[500] | 340 | if (empty($val)) { |
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| 341 | $app->logMsg(sprintf('Empty email header provided: %s', $key), LOG_DEBUG, __FILE__, __LINE__); |
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[490] | 342 | continue; |
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[424] | 343 | } |
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[500] | 344 | if (empty($key) || !is_string($key) || !is_string($val) || preg_match("/[\n\r]/", $key . $val) || preg_match('/[^\w-]/', $key)) { |
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| 345 | $app->logMsg(sprintf('Broken email header provided: %s=%s', $key, $val), LOG_WARNING, __FILE__, __LINE__); |
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| 346 | continue; |
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| 347 | } |
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[490] | 348 | // If the envelope_sender_address was given as a header, move it to the correct place. |
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| 349 | if ('envelope_sender_address' == $key) { |
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| 350 | $this->_params['envelope_sender_address'] = isset($this->_params['envelope_sender_address']) ? $this->_params['envelope_sender_address'] : $val; |
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| 351 | continue; |
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| 352 | } |
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[38] | 353 | $final_headers[] = sprintf('%s: %s', $key, $val); |
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| 354 | } |
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[212] | 355 | $final_headers = join($this->getParam('crlf'), $final_headers); |
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[42] | 356 | |
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[24] | 357 | // This is the address where delivery problems are sent to. We must strip off everything except the local@domain part. |
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[490] | 358 | if (isset($this->_params['envelope_sender_address'])) { |
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| 359 | $envelope_sender_address = sprintf('<%s>', trim($this->_params['envelope_sender_address'], '<>')); |
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| 360 | } else { |
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| 361 | $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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| 362 | } |
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[212] | 363 | if ('' != $envelope_sender_address && $this->validEmail($envelope_sender_address)) { |
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[490] | 364 | $additional_parameter = sprintf('-f %s', $envelope_sender_address); |
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[212] | 365 | } else { |
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[490] | 366 | $additional_parameter = ''; |
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[212] | 367 | } |
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[42] | 368 | |
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[36] | 369 | // Check for mail header injection attacks. |
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[212] | 370 | $full_mail_content = join($this->getParam('crlf'), array($final_to, $this->_params['subject'], $final_body)); |
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[293] | 371 | if (preg_match("/(^|[\n\r])(Content-Type|MIME-Version|Content-Transfer-Encoding|Bcc|Cc)\s*:/i", $full_mail_content)) { |
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[136] | 372 | $app->logMsg(sprintf('Mail header injection attack in content: %s', $full_mail_content), LOG_WARNING, __FILE__, __LINE__); |
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[36] | 373 | return false; |
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| 374 | } |
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[346] | 375 | |
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[454] | 376 | // Send email without 5th parameter if safemode is enabled. |
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[345] | 377 | if (ini_get('safe_mode')) { |
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[346] | 378 | $ret = mb_send_mail($final_to, $this->_params['subject'], $final_body, $final_headers); |
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[479] | 379 | } else { |
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[490] | 380 | $ret = mb_send_mail($final_to, $this->_params['subject'], $final_body, $final_headers, $additional_parameter); |
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[347] | 381 | } |
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[454] | 382 | |
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[346] | 383 | // Ensure message was successfully accepted for delivery. |
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| 384 | if ($ret) { |
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| 385 | $app->logMsg(sprintf('Email successfully sent to %s', $final_to), LOG_INFO, __FILE__, __LINE__); |
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| 386 | return true; |
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| 387 | } else { |
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[490] | 388 | $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] | 389 | return false; |
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[454] | 390 | } |
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[23] | 391 | } |
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[42] | 392 | |
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[23] | 393 | /** |
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| 394 | * Validates an email address based on the recommendations in RFC 3696. |
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[42] | 395 | * Is more loose than restrictive, to allow the many valid variants of |
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[23] | 396 | * email addresses while catching the most common mistakes. Checks an array too. |
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| 397 | * http://www.faqs.org/rfcs/rfc822.html |
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| 398 | * http://www.faqs.org/rfcs/rfc2822.html |
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| 399 | * http://www.faqs.org/rfcs/rfc3696.html |
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| 400 | * http://www.faqs.org/rfcs/rfc1035.html |
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| 401 | * |
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| 402 | * @access public |
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| 403 | * @param mixed $email Address to check, string or array. |
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| 404 | * @return bool Validity of address. |
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| 405 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 406 | * @since 30 Nov 2005 22:00:50 |
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| 407 | */ |
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[468] | 408 | public function validEmail($email) |
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[23] | 409 | { |
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[479] | 410 | $app =& App::getInstance(); |
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[454] | 411 | |
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[24] | 412 | // If an array, check values recursively. |
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[23] | 413 | if (is_array($email)) { |
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| 414 | foreach ($email as $e) { |
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| 415 | if (!$this->validEmail($e)) { |
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| 416 | return false; |
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| 417 | } |
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| 418 | } |
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| 419 | return true; |
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| 420 | } else { |
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[334] | 421 | // To be valid email address must match regex and fit within the length constraints. |
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[247] | 422 | if (preg_match($this->getParam('regex'), $email, $e_parts) && mb_strlen($e_parts[2]) < 64 && mb_strlen($e_parts[3]) < 255) { |
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[24] | 423 | return true; |
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| 424 | } else { |
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[394] | 425 | $app->logMsg(sprintf('Invalid email address: %s', $email), LOG_INFO, __FILE__, __LINE__); |
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[23] | 426 | return false; |
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| 427 | } |
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| 428 | } |
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| 429 | } |
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| 430 | } |
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| 431 | |
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