1 | <?php |
---|
2 | /** |
---|
3 | * Email.inc.php |
---|
4 | * code by strangecode :: www.strangecode.com :: this document contains copyrighted information |
---|
5 | * |
---|
6 | * Easy email template usage. |
---|
7 | * |
---|
8 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
9 | * @version 1.0 |
---|
10 | ------------------------------------------------------------------------------------- |
---|
11 | // Example. |
---|
12 | $email = new Email(array( |
---|
13 | 'to' => array($frm['email'], 'q@lovemachine.local'), |
---|
14 | 'from' => sprintf('%s <%s>', App::getParam('site_name'), App::getParam('site_email')), |
---|
15 | 'subject' => 'Your account has been activated', |
---|
16 | )); |
---|
17 | $email->setTemplate('email_registration_confirm.ihtml'); |
---|
18 | // $email->setString('Or you can pass your message body as a string, also with {VARIABLES}.'); |
---|
19 | $email->replace(array( |
---|
20 | 'site_name' => App::getParam('site_name'), |
---|
21 | 'site_url' => App::getParam('site_url'), |
---|
22 | 'username' => $frm['username'], |
---|
23 | 'password' => $frm['password1'], |
---|
24 | )); |
---|
25 | if ($email->send()) { |
---|
26 | App::raiseMsg(sprintf(_("A confirmation email has been sent to %s."), $frm['email']), MSG_SUCCESS, __FILE__, __LINE__); |
---|
27 | } else { |
---|
28 | App::logMsg(sprintf('Error sending confirmation email to address %s', $frm['email']), LOG_NOTICE, __FILE__, __LINE__); |
---|
29 | } |
---|
30 | ------------------------------------------------------------------------------------- |
---|
31 | */ |
---|
32 | class Email { |
---|
33 | |
---|
34 | // Default parameters, to be overwritten by setParam() and read with getParam() |
---|
35 | var $_params = array( |
---|
36 | 'to' => null, |
---|
37 | 'from' => null, |
---|
38 | 'subject' => null, |
---|
39 | 'headers' => null, |
---|
40 | 'regex' => null |
---|
41 | ); |
---|
42 | |
---|
43 | // String that contains the email body. |
---|
44 | var $_template; |
---|
45 | |
---|
46 | // String that contains the email body after replacements. |
---|
47 | var $_template_replaced; |
---|
48 | |
---|
49 | /** |
---|
50 | * Constructor. |
---|
51 | * |
---|
52 | * @access public |
---|
53 | * @param array $params Array of object parameters. |
---|
54 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
55 | * @since 28 Nov 2005 12:59:41 |
---|
56 | */ |
---|
57 | function Email($params=null) |
---|
58 | { |
---|
59 | // The regex used in validEmail(). Set here instead of in the default _params above so we can use the concatination . dot. |
---|
60 | // This matches an email address as complex as: |
---|
61 | // Bob Smith <bob&smith's/dep=sales!@smith-wick.ca.us> (Sales department) |
---|
62 | // ...and something as simple as: |
---|
63 | // x@x.com |
---|
64 | $this->setParam(array('regex' => '/^(?:[^,@]*\s+|[^,@]*(<)|)' // Display name |
---|
65 | . '((?:[^.<>\s@\",\[\]]+[^<>\s@\",\[\]])*[^.<>\s@\",\[\]]+)' // Local-part |
---|
66 | . '@' // @ |
---|
67 | . '((?:(\[)|[A-Z0-9]?)' // Domain, first char |
---|
68 | . '(?(4)' // Domain conditional for if first domain char is [ |
---|
69 | . '(?:[0-9]{1,3}\.){3}[0-9]{1,3}\]' // TRUE, matches IP address |
---|
70 | . '|' |
---|
71 | . '[.-]?(?:[A-Z0-9]+[-.])*(?:[A-Z0-9]+\.)+[A-Z]{2,6}))' // FALSE, matches domain name |
---|
72 | . '(?(1)' // Comment conditional for if initial < exists |
---|
73 | . '(?:>\s*|>\s+\([^,@]+\)\s*)' // TRUE, ensure ending > |
---|
74 | . '|' |
---|
75 | . '(?:|\s*|\s+\([^,@]+\)\s*))$/i')); // FALSE ensure there is no ending > |
---|
76 | |
---|
77 | if (isset($params)) { |
---|
78 | $this->setParam($params); |
---|
79 | } |
---|
80 | } |
---|
81 | |
---|
82 | /** |
---|
83 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
---|
84 | * |
---|
85 | * @access public |
---|
86 | * @param array $params Array of parameters (key => val pairs). |
---|
87 | */ |
---|
88 | function setParam($params) |
---|
89 | { |
---|
90 | if (isset($params) && is_array($params)) { |
---|
91 | // Enforce valid email addresses. |
---|
92 | if (isset($params['to']) && !$this->validEmail($params['to'])) { |
---|
93 | $params['to'] = null; |
---|
94 | } |
---|
95 | if (isset($params['from']) && !$this->validEmail($params['from'])) { |
---|
96 | $params['from'] = null; |
---|
97 | } |
---|
98 | |
---|
99 | // Merge new parameters with old overriding only those passed. |
---|
100 | $this->_params = array_merge($this->_params, $params); |
---|
101 | } else { |
---|
102 | App::logMsg(sprintf('Parameters are not an array: %s', $params), LOG_ERR, __FILE__, __LINE__); |
---|
103 | } |
---|
104 | } |
---|
105 | |
---|
106 | /** |
---|
107 | * Return the value of a parameter, if it exists. |
---|
108 | * |
---|
109 | * @access public |
---|
110 | * @param string $param Which parameter to return. |
---|
111 | * @return mixed Configured parameter value. |
---|
112 | */ |
---|
113 | function getParam($param) |
---|
114 | { |
---|
115 | if (isset($this->_params[$param])) { |
---|
116 | return $this->_params[$param]; |
---|
117 | } else { |
---|
118 | App::logMsg(sprintf('Parameter is not set: %s', $param), LOG_NOTICE, __FILE__, __LINE__); |
---|
119 | return null; |
---|
120 | } |
---|
121 | } |
---|
122 | |
---|
123 | /** |
---|
124 | * Loads template from file to generate email body. |
---|
125 | * |
---|
126 | * @access public |
---|
127 | * @param string $template Filename of email template. |
---|
128 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
129 | * @since 28 Nov 2005 12:56:23 |
---|
130 | */ |
---|
131 | function setTemplate($template) |
---|
132 | { |
---|
133 | // Load file, using include_path. |
---|
134 | if (!$this->_template = file_get_contents($template, true)) { |
---|
135 | App::logMsg(sprintf('Email template file does not exist: %s', $template), LOG_ERR, __FILE__, __LINE__); |
---|
136 | $this->_template = null; |
---|
137 | $this->_template_replaced = null; |
---|
138 | return false; |
---|
139 | } |
---|
140 | // This could be a new template, so reset the _template_replaced. |
---|
141 | $this->_template_replaced = null; |
---|
142 | return true; |
---|
143 | } |
---|
144 | |
---|
145 | /** |
---|
146 | * Loads template from string to generate email body. |
---|
147 | * |
---|
148 | * @access public |
---|
149 | * @param string $template Filename of email template. |
---|
150 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
151 | * @since 28 Nov 2005 12:56:23 |
---|
152 | */ |
---|
153 | function setString($string) |
---|
154 | { |
---|
155 | // Load file, using include_path. |
---|
156 | if ('' == trim($string)) { |
---|
157 | App::logMsg(sprintf('Empty string provided.', null), LOG_ERR, __FILE__, __LINE__); |
---|
158 | $this->_template_replaced = null; |
---|
159 | return false; |
---|
160 | } else { |
---|
161 | $this->_template = $string; |
---|
162 | // This could be a new template, so reset the _template_replaced. |
---|
163 | $this->_template_replaced = null; |
---|
164 | return true; |
---|
165 | } |
---|
166 | } |
---|
167 | |
---|
168 | /** |
---|
169 | * Replace variables in template with argument data. |
---|
170 | * |
---|
171 | * @access public |
---|
172 | * @param array $replacements Array keys are the values to search for, array vales are the replacement values. |
---|
173 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
174 | * @since 28 Nov 2005 13:08:51 |
---|
175 | */ |
---|
176 | function replace($replacements) |
---|
177 | { |
---|
178 | // Ensure template exists. |
---|
179 | if (!isset($this->_template)) { |
---|
180 | App::logMsg(sprintf('Cannot replace variables, no template defined.', null), LOG_ERR, __FILE__, __LINE__); |
---|
181 | return false; |
---|
182 | } |
---|
183 | |
---|
184 | // Ensure replacements argument is an array. |
---|
185 | if (!is_array($replacements)) { |
---|
186 | App::logMsg(sprintf('Cannot replace variables, invalid replacements.', null), LOG_ERR, __FILE__, __LINE__); |
---|
187 | return false; |
---|
188 | } |
---|
189 | |
---|
190 | // Apply regex pattern to search elements. |
---|
191 | $search = array_keys($replacements); |
---|
192 | array_walk($search, create_function('&$v', '$v = "{" . strtoupper($v) . "}";')); |
---|
193 | |
---|
194 | // Replacement values. |
---|
195 | $replace = array_values($replacements); |
---|
196 | |
---|
197 | // Search and replace all values at once. |
---|
198 | $this->_template_replaced = str_replace($search, $replace, $this->_template); |
---|
199 | } |
---|
200 | |
---|
201 | /** |
---|
202 | * Send email using PHP's mail() function. |
---|
203 | * |
---|
204 | * @access public |
---|
205 | * @param string $to |
---|
206 | * @param string $from |
---|
207 | * @param string $subject |
---|
208 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
209 | * @since 28 Nov 2005 12:56:09 |
---|
210 | */ |
---|
211 | function send($to=null, $from=null, $subject=null, $headers=null) |
---|
212 | { |
---|
213 | // Use arguments if provided. |
---|
214 | if (isset($to)) { |
---|
215 | $this->setParam(array('to' => $to)); |
---|
216 | } |
---|
217 | if (isset($from)) { |
---|
218 | $this->setParam(array('from' => $from)); |
---|
219 | } |
---|
220 | if (isset($subject)) { |
---|
221 | $this->setParam(array('subject' => $subject)); |
---|
222 | } |
---|
223 | if (isset($headers)) { |
---|
224 | $this->setParam(array('headers' => $headers)); |
---|
225 | } |
---|
226 | |
---|
227 | // Ensure required values exist. |
---|
228 | if (!isset($this->_params['subject'])) { |
---|
229 | App::logMsg(sprintf('Cannot send email to %s. SUBJECT not defined.', $this->_params['to']), LOG_ERR, __FILE__, __LINE__); |
---|
230 | return false; |
---|
231 | } else if (!isset($this->_template)) { |
---|
232 | App::logMsg(sprintf('Cannot send email: "%s". Template not set.', $this->_params['subject']), LOG_ERR, __FILE__, __LINE__); |
---|
233 | return false; |
---|
234 | } else if (!isset($this->_params['to'])) { |
---|
235 | App::logMsg(sprintf('Cannot send email: "%s". TO not defined.', $this->_params['subject']), LOG_NOTICE, __FILE__, __LINE__); |
---|
236 | return false; |
---|
237 | } else if (!isset($this->_params['from'])) { |
---|
238 | App::logMsg(sprintf('Cannot send email: "%s". FROM not defined.', $this->_params['subject']), LOG_ERR, __FILE__, __LINE__); |
---|
239 | return false; |
---|
240 | } |
---|
241 | |
---|
242 | // Wrap email text body, using _template_replaced if replacements have been used, or just a fresh _template if not. |
---|
243 | $final_body = wordwrap(isset($this->_template_replaced) ? $this->_template_replaced : $this->_template); |
---|
244 | |
---|
245 | // Ensure all placeholders have been replaced. Find anything with {...} characters. |
---|
246 | if (preg_match('/({[^}]+})/', $final_body, $unreplaced_match)) { |
---|
247 | App::logMsg(sprintf('Cannot send email. Variables left unreplaced in template: %s', (isset($unreplaced_match[1]) ? $unreplaced_match[1] : '')), LOG_ERR, __FILE__, __LINE__); |
---|
248 | return false; |
---|
249 | } |
---|
250 | |
---|
251 | // Final "to" header can have multiple addresses if in an array. |
---|
252 | $final_to = is_array($this->_params['to']) ? join(', ', $this->_params['to']) : $this->_params['to']; |
---|
253 | |
---|
254 | // From headers are custom headers. |
---|
255 | $headers = array('From' => $this->_params['from']); |
---|
256 | |
---|
257 | // Additional headers. |
---|
258 | if (isset($this->_params['headers']) && is_array($this->_params['headers'])) { |
---|
259 | $headers = array_merge($this->_params['headers'], $headers); |
---|
260 | } |
---|
261 | |
---|
262 | // Process headers. |
---|
263 | $final_headers = array(); |
---|
264 | foreach ($headers as $key => $val) { |
---|
265 | $final_headers[] = sprintf('%s: %s', $key, $val); |
---|
266 | } |
---|
267 | $final_headers = join("\r\n", $final_headers); |
---|
268 | |
---|
269 | // This is the address where delivery problems are sent to. We must strip off everything except the local@domain part. |
---|
270 | $envelope_sender_header = sprintf('-f %s', preg_replace('/^.*<?([^\s@\[\]<>()]+\@[A-Za-z0-9.-]{1,}\.[A-Za-z]{2,5})>?$/iU', '$1', $this->_params['from'])); |
---|
271 | |
---|
272 | // Check for mail header injection attacks. |
---|
273 | $full_mail_content = join("\n", array($final_to, $this->_params['subject'], $final_body)); |
---|
274 | if (preg_match("/(Content-Type:|MIME-Version:|Content-Transfer-Encoding:|[\n\r]Bcc:|[\n\r]Cc:)/i", $full_mail_content)) { |
---|
275 | App::logMsg(sprintf('Mail header injection attack in content: %s', $full_mail_content), LOG_WARNING, __FILE__, __LINE__); |
---|
276 | sleep(3); |
---|
277 | return false; |
---|
278 | } |
---|
279 | |
---|
280 | // Ensure message was successfully accepted for delivery. |
---|
281 | if (mail($final_to, $this->_params['subject'], $final_body, $final_headers, $envelope_sender_header)) { |
---|
282 | App::logMsg(sprintf('Email successfully sent to %s', $final_to), LOG_DEBUG, __FILE__, __LINE__); |
---|
283 | return true; |
---|
284 | } else { |
---|
285 | App::logMsg(sprintf('Email failure with parameters: %s, %s, %s, %s', $final_to, $this->_params['subject'], str_replace("\r\n", '\r\n', $final_headers), $envelope_sender_header), LOG_NOTICE, __FILE__, __LINE__); |
---|
286 | return false; |
---|
287 | } |
---|
288 | } |
---|
289 | |
---|
290 | /** |
---|
291 | * Validates an email address based on the recommendations in RFC 3696. |
---|
292 | * Is more loose than restrictive, to allow the many valid variants of |
---|
293 | * email addresses while catching the most common mistakes. Checks an array too. |
---|
294 | * http://www.faqs.org/rfcs/rfc822.html |
---|
295 | * http://www.faqs.org/rfcs/rfc2822.html |
---|
296 | * http://www.faqs.org/rfcs/rfc3696.html |
---|
297 | * http://www.faqs.org/rfcs/rfc1035.html |
---|
298 | * |
---|
299 | * @access public |
---|
300 | * @param mixed $email Address to check, string or array. |
---|
301 | * @return bool Validity of address. |
---|
302 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
303 | * @since 30 Nov 2005 22:00:50 |
---|
304 | */ |
---|
305 | function validEmail($email) |
---|
306 | { |
---|
307 | // If an array, check values recursively. |
---|
308 | if (is_array($email)) { |
---|
309 | foreach ($email as $e) { |
---|
310 | if (!$this->validEmail($e)) { |
---|
311 | return false; |
---|
312 | } |
---|
313 | } |
---|
314 | return true; |
---|
315 | } else { |
---|
316 | // To be valid email address must match regex and fit within the lenth constraints. |
---|
317 | if (preg_match($this->getParam('regex'), $email, $e_parts) && strlen($e_parts[2]) < 64 && strlen($e_parts[3]) < 255) { |
---|
318 | return true; |
---|
319 | } else { |
---|
320 | App::logMsg(sprintf('Invalid email: %s', $email), LOG_INFO, __FILE__, __LINE__); |
---|
321 | return false; |
---|
322 | } |
---|
323 | } |
---|
324 | } |
---|
325 | } |
---|
326 | |
---|
327 | ?> |
---|