form-email/mailer.php

   1 <?php
   2
   3 #
   4 # Form E-Mail 3.5
   5 #
   6 # Versenden einer E-Mail, die ueber ein Kontaktformular
   7 # geschrieben wurde.
   8 #
   9 # Autor:            Patrick Canterino <patrick@patshaping.de>
  10 # Letzte Aenderung: 02.01.2012
  11 #
  12 # Copyright (C) 2002-2011 Patrick Canterino
  13 #
  14 # Diese Datei kann unter den Bedingungen der "Artistic License 2.0"
  15 # weitergegeben und / oder veraendert werden.
  16 # Siehe:
  17 # http://www.opensource.org/licenses/artistic-license-2.0
  18 #
  19
  20 # ===========
  21 #  Hauptteil
  22 # ===========
  23
  24 $VERSION = '3.5-dev';
  25
  26 require('config.php');
  27 require('functions.php');
  28 require('class.Template.php');
  29
  30 if($_SERVER['REQUEST_METHOD'] != 'POST') show_fatal($err_only_post);
  31
  32 # Wenn Captchas aktiviert sind, Session starten
  33
  34 if($captcha_enable) {
  35     session_start();
  36
  37     # Pruefen, ob die zulaessige Zahl der Falscheingaben bei Captchas ueberschritten wurde
  38
  39     if($captcha_max && isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed'] >= $captcha_max) {
  40         show_fatal($err_captcha_max);
  41     }
  42 }
  43
  44 # Bestimmte Werte in Integers umwandeln
  45
  46 $name_min    = intval($name_min);
  47 $subject_min = intval($subject_min);
  48 $text_min    = intval($text_min);
  49 $name_max    = intval($name_max);
  50 $subject_max = intval($subject_max);
  51 $text_max    = intval($text_max);
  52 $line_break  = intval($line_break);
  53
  54 # Formulardaten auslesen
  55
  56 $email     = formdata('email');
  57 $name      = formdata('name');
  58 $recipient = formdata('recipient');
  59 $subject   = formdata('subject');
  60 $text      = formdata('text');
  61
  62 # Pruefen, ob ueberhaupt was ausgefuellt wurde
  63
  64 if(!$name && !$email && !$text) show_user_error($err_nothing);
  65
  66 # Pruefen, ob alle wichtigen Formular-Felder ausgefuellt wurden
  67
  68 if(!$name)    show_user_error($err_no_name);
  69 if(!$email)   show_user_error($err_no_email);
  70 if(!$text)    show_user_error($err_no_text);
  71
  72 if(!$subject) $subject = $default_subject; # Standard-Betreff
  73
  74 # Pruefen, ob Name, Betreff und Text lang genug sind
  75
  76 if($name_min    && strlen($name)    < $name_min)    show_user_error($err_name_short);
  77 if($subject_min && strlen($subject) < $subject_min) show_user_error($err_subject_short);
  78 if($text_min    && strlen($text)    < $text_min)    show_user_error($err_text_short);
  79
  80 # Pruefen, ob Name, Betreff und Text nicht zu lang sind
  81
  82 if($name_max    && strlen($name)    > $name_max)    show_user_error($err_name_long);
  83 if($subject_max && strlen($subject) > $subject_max) show_user_error($err_subject_long);
  84 if($text_max    && strlen($text)    > $text_max)    show_user_error($err_text_long);
  85
  86 # Pruefen, ob eingegebene E-Mail-Adresse gueltig ist
  87
  88 if(!filter_var($email,FILTER_VALIDATE_EMAIL)) show_user_error($err_invalid_email);
  89
  90 # Individuelle Felder einlesen
  91
  92 $prepared_user_fields = array();
  93
  94 while(list($user_field,$user_field_data) = each($user_fields)) {
  95     $user_field_content = formdata($user_field);
  96
  97     # Pruefung, ob es ein Pflichtfeld ist
  98
  99     if(!$user_field_content) {
 100         if(isset($user_field_data['required']) && $user_field_data['required']) {
 101             if(isset($user_field_data['errors']['not_set'])) {
 102                 show_user_error($user_field_data['errors']['not_set']);
 103             }
 104             else {
 105                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'not_set', 'INDIVIDUAL' => $user_field));
 106             }
 107         }
 108         else {
 109             # Wenn das Feld optional ist und nicht gesetzt wurde, brechen wir hier ab
 110             # und machen mit dem naechsten Feld weiter
 111
 112             $prepared_user_fields[$user_field_data['tpl_var']] = '';
 113             continue;
 114         }
 115     }
 116
 117     # Laengen-Pruefung
 118
 119     if(isset($user_field_data['min']) && $user_field_data['min']) {
 120         if(strlen($user_field_content) < $user_field_data['min']) {
 121             if(isset($user_field_data['errors']['too_short'])) {
 122                 show_user_error($user_field_data['errors']['too_short']);
 123             }
 124             else {
 125                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'too_short', 'INDIVIDUAL' => $user_field));
 126             }
 127         }
 128     }
 129
 130     if(isset($user_field_data['min']) && $user_field_data['max']) {
 131         if(strlen($user_field_content) > $user_field_data['max']) {
 132             if(isset($user_field_data['errors']['too_long'])) {
 133                 show_user_error($user_field_data['errors']['too_long']);
 134             }
 135             else {
 136                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'too_long', 'INDIVIDUAL' => $user_field));
 137             }
 138         }
 139     }
 140
 141     # Pruefung gegen frei definierbare Pruef-Funktion
 142
 143     if(isset($user_field_data['check']) && $user_field_data['check'] != '') {
 144         if(function_exists($user_field_data['check']) && call_user_func($user_field_data['check'],$user_field_content) === false) {
 145             if(isset($user_field_data['errors']['check_fail'])) {
 146                 show_user_error($user_field_data['errors']['check_fail']);
 147             }
 148             else {
 149                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'check_fail', 'INDIVIDUAL' => $user_field));
 150             }
 151         }
 152     }
 153
 154     # Pruefung gegen frei definierbaren regulaeren Ausdruck
 155
 156     if(isset($user_field_data['regex']) && $user_field_data['regex'] != '') {
 157         if(!preg_match($user_field_data['regex'],$user_field_content)) {
 158             if(isset($user_field_data['errors']['match_fail'])) {
 159                 show_user_error($user_field_data['errors']['match_fail']);
 160             }
 161             else {
 162                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'match_fail', 'INDIVIDUAL' => $user_field));
 163             }
 164         }
 165     }
 166
 167     # Formularfeld durch frei definierbare Funktion bearbeiten
 168
 169     if(isset($user_field_data['prepare']) && $user_field_data['prepare'] != '') {
 170         if(function_exists($user_field_data['check'])) {
 171             $user_field_content = call_user_func($user_field_data['prepare'],$user_field_content);
 172         }
 173     }
 174
 175     # Name der Template-Variable ermitteln
 176
 177     if(isset($user_field_data['tpl_var']) && $user_field_data['tpl_var'] != '') {
 178         $tpl_var = $user_field_data['tpl_var'];
 179     }
 180     else {
 181         $tpl_var = 'USER_'.$user_field;
 182     }
 183
 184     # Fertige Formulardaten wegkopieren und fuer spaeter zur Verfuegung stellen
 185
 186     $prepared_user_fields[$tpl_var] = $user_field_content;
 187 }
 188
 189 # Captcha ueberpruefen
 190
 191 if($captcha_enable) {
 192     $captcha_input     = formdata('captcha');
 193     $captcha_incorrect = false;
 194
 195     if(isset($_SESSION) && isset($_SESSION['captcha'])) {
 196         if($captcha_case) {
 197             if(!$captcha_input || empty($captcha_input) || $captcha_input != $_SESSION['captcha']) $captcha_incorrect = true;
 198         }
 199         else {
 200             if(!$captcha_input || empty($captcha_input) || strtolower($captcha_input) != strtolower($_SESSION['captcha'])) $captcha_incorrect = true;
 201         }
 202
 203         if($captcha_incorrect) {
 204             if($captcha_max) {
 205                 if(isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed']) {
 206                     $_SESSION['captcha_failed']++;
 207                 }
 208                 else {
 209                     $_SESSION['captcha_failed'] = 1;
 210                 }
 211             }
 212
 213             if($captcha_max && isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed'] >= $captcha_max) {
 214                 show_fatal($err_captcha_max);
 215             }
 216             else {
 217                 show_user_error($err_captcha_incorrect);
 218             }
 219         }
 220     }
 221     else {
 222         show_fatal($err_captcha_session_failure);
 223     }
 224 }
 225
 226 # Referer ueberpruefen
 227
 228 if($check_referer) {
 229     $referer_ok = semicolon_split($referer_ok);
 230
 231     $referer_parts = parse_url($_SERVER['HTTP_REFERER']);
 232     $referer_host  = $referer_parts['host'];
 233
 234     if(in_array($referer_host,$referer_ok) === false) show_fatal($err_referer_not_ok);
 235 }
 236
 237 # Zeilenumbrueche in Namen und Betreff durch Leerzeichen ersetzen
 238
 239 $name    = preg_replace("/\015\012|\012|\015/",' ',$name);
 240 $subject = preg_replace("/\015\012|\012|\015/",' ',$subject);
 241
 242 # Uhrzeit formatieren
 243
 244 date_default_timezone_set($timezone);
 245 $time = strftime($timeformat);
 246
 247 # Header der Mail
 248
 249 $header = '';
 250
 251 if($friendly_sender) {
 252     if($friendly_sender == 2) {
 253         if(preg_match("/[\200-\377]/",$name)) {
 254             # Absendernamen mit Base64 codieren
 255
 256             $encoded_name = base64_encode($name);
 257             $encoded_name = wordwrap($encoded_name,56,"\015\012",1);
 258             $encoded_name = "=?$charset?B?$encoded_name?=";
 259             $encoded_name = str_replace("\015\012","?=\015\012      =?$charset?B?",$encoded_name);
 260         }
 261         else {
 262             # Bestimmte Zeichen im Absendernamen codieren
 263
 264             $encoded_name = str_replace('"','\"',$name);
 265             $encoded_name = str_replace('(','\\(',$encoded_name);
 266             $encoded_name = str_replace(')','\\)',$encoded_name);
 267             $encoded_name = '"'.$encoded_name.'"';
 268         }
 269
 270         $header = "From: $encoded_name <$email>\n";
 271     }
 272     else $header = "From: $email\n";
 273 }
 274
 275 if($add_header) {
 276     if(!$friendly_sender) $header .= "Reply-To: $email\n";
 277     $header .= 'Content-Type: text/plain; charset="'.$charset.'"'."\n";
 278     $header .= 'Content-Transfer-Encoding: 8bit'."\n";
 279     $header .= 'MIME-Version: 1.0'."\n";
 280     $header .= 'X-Mailer: Form E-Mail '.$VERSION."\n";
 281     $header .= 'X-Sender-IP: ['.$_SERVER['REMOTE_ADDR'].']';
 282 }
 283 else $header .= "Reply-To: $email";
 284
 285 $header = preg_replace("/\015\012|\012|\015/","\n",$header);
 286
 287 # Betreff mit Base64 codieren, wenn er Zeichen enthaelt,
 288 # die nicht aus dem ASCII-Zeichensatz stammen
 289
 290 if(preg_match("/[\200-\377]/",$subject)) {
 291     $encoded_subject = base64_encode($subject);
 292     $encoded_subject = wordwrap($encoded_subject,56,"\015\012",1);
 293     $encoded_subject = "=?$charset?B?$encoded_subject?=";
 294     $encoded_subject = str_replace("\015\012","?=\015\012         =?$charset?B?",$encoded_subject);
 295 }
 296 else $encoded_subject = $subject;
 297
 298 # Mailtext formatieren...
 299
 300 $mtpl = new Template;
 301 $mtpl->read_file($tpl_mail);
 302
 303 $mtpl->set_var('EMAIL',  $email);
 304 $mtpl->set_var('NAME',   $name);
 305 $mtpl->set_var('SUBJECT',$subject);
 306 $mtpl->set_var('TIME',   $time);
 307
 308 # ... Umgebungsvariablen einfuegen...
 309
 310 if(isset($allowed_envs) && is_array($allowed_envs)) {
 311     foreach($allowed_envs as $allowed_env) {
 312         if(isset($_SERVER[$allowed_env])) {
 313             $mtpl->set_var('ENV_'.$allowed_env,$_SERVER[$allowed_env]);
 314         }
 315         else {
 316             $mtpl->set_var('ENV_'.$allowed_env,'');
 317         }
 318     }
 319 }
 320
 321 # ... eigene Felder einfuegen
 322
 323 while(list($tpl_var,$user_field_content) = each($prepared_user_fields)) {
 324     $mtpl->set_var($tpl_var,$user_field_content);
 325 }
 326
 327 $mtpl->set_var('TEXT',$text);
 328
 329 $mtpl->parse();
 330
 331 $mailtext = $mtpl->get_template();
 332
 333 if($line_break) $mailtext = wordwrap($mailtext,$line_break);
 334
 335 $mailtext = preg_replace("/\015\012|\012|\015/","\n",$mailtext);
 336
 337 # ... und die Mail abschicken (bei einem Fehler erscheint eine Meldung)
 338
 339 if($recipient && is_array($aliases) && $aliases[$recipient]) {
 340     # Empfaenger mit Alias-Namen
 341
 342     $mailto = $aliases[$recipient];
 343 }
 344
 345 $mailto = semicolon_split($mailto);
 346
 347 for($x=0;$x<count($mailto);$x++) {
 348     mail($mailto[$x],$encoded_subject,$mailtext,$header) or die($err_send_error);
 349 }
 350
 351 if($captcha_enable) session_destroy();
 352
 353 # Mail wurde erfolgreich versendet, also wird die Dankesseite angezeigt
 354
 355 if($return_url) {
 356     # Per Redirect auf Seite umleiten
 357
 358     if(strpos($return_url,'://') === false) {
 359         # URL vervollstaendigen
 360
 361         $http_host = ($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME'];
 362         $protocol  = '';
 363         $port      = '';
 364         $path      = '';
 365
 366         if(isset($_SERVER['HTTPS'])) {
 367             # SSL-verschluesseltes HTTP
 368
 369             $protocol = 'https://';
 370             if($_SERVER['SERVER_PORT'] != 443) $port = ':'.$_SERVER['SERVER_PORT'];
 371         }
 372         else {
 373             # Normales HTTP
 374
 375             $protocol = 'http://';
 376             if($_SERVER['SERVER_PORT'] != 80) $port = ':'.$_SERVER['SERVER_PORT'];
 377         }
 378
 379         if(substr($return_url,0,1) == '/') {
 380             $return_url = $protocol.$http_host.$port.$return_url;
 381         }
 382         else {
 383             if(substr($_SERVER['SCRIPT_NAME'],-1,1) == '/') {
 384                 $path = substr($_SERVER['SCRIPT_NAME'],0,-1);
 385             }
 386             else {
 387                 $path = $_SERVER['SCRIPT_NAME'];
 388             }
 389
 390             $path = substr($path,0,strrpos($path,'/')+1);
 391             if(substr($path,0,1) != '/') $path = '/'.$path;
 392
 393             $return_url = $protocol.$http_host.$port.$path.$return_url;
 394         }
 395     }
 396
 397     header('Status: 303 See Other');
 398     header('Location: '.$return_url);
 399 }
 400 else {
 401     # Mit Template formatierte Seite anzeigen
 402
 403     $stpl = new Template;
 404     $stpl->read_file($tpl_sent);
 405
 406     $stpl->set_var('EMAIL',  plain($email));
 407     $stpl->set_var('MAIL',   plain($mailtext));
 408     $stpl->set_var('NAME',   plain($name));
 409     $stpl->set_var('SUBJECT',plain($subject));
 410     $stpl->set_var('TEXT',   plain($text));
 411     $stpl->set_var('TIME',   plain($time));
 412
 413     reset($user_fields);
 414
 415     while(list($user_field,$user_field_data) = each($user_fields)) {
 416         if(isset($user_field_data['tpl_var']) && $user_field_data['tpl_var'] != '') {
 417             $tpl_var = $user_field_data['tpl_var'];
 418         }
 419         else {
 420             $tpl_var = 'USER_'.$user_field;
 421         }
 422
 423         $stpl->set_var($tpl_var,htmlspecialchars(formdata($user_field)));
 424     }
 425
 426     $stpl->parse();
 427
 428     print $stpl->get_template();
 429 }
 430
 431 #
 432 ### Ende ###
 433
 434 ?>