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: 09.01.2012
  11 #
  12 # Copyright (C) 2002-2012 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 $timestamp = time();
 245
 246 date_default_timezone_set($timezone);
 247 $time = strftime($timeformat,$timestamp);
 248
 249 # Header der Mail
 250
 251 $header = '';
 252
 253 if($friendly_sender) {
 254     if($friendly_sender == 2) {
 255         if(preg_match("/[\200-\377]/",$name)) {
 256             # Absendernamen mit Base64 codieren
 257
 258             $encoded_name = base64_encode($name);
 259             $encoded_name = wordwrap($encoded_name,56,"\015\012",1);
 260             $encoded_name = "=?$charset?B?$encoded_name?=";
 261             $encoded_name = str_replace("\015\012","?=\015\012      =?$charset?B?",$encoded_name);
 262         }
 263         else {
 264             # Bestimmte Zeichen im Absendernamen codieren
 265
 266             $encoded_name = str_replace('"','\"',$name);
 267             $encoded_name = str_replace('(','\\(',$encoded_name);
 268             $encoded_name = str_replace(')','\\)',$encoded_name);
 269             $encoded_name = '"'.$encoded_name.'"';
 270         }
 271
 272         $header = "From: $encoded_name <$email>\n";
 273     }
 274     else $header = "From: $email\n";
 275 }
 276
 277 if($add_header) {
 278     if(!$friendly_sender) $header .= "Reply-To: $email\n";
 279     $header .= 'Content-Type: text/plain; charset="'.$charset.'"'."\n";
 280     $header .= 'Content-Transfer-Encoding: 8bit'."\n";
 281     $header .= 'MIME-Version: 1.0'."\n";
 282     $header .= 'X-Mailer: Form E-Mail '.$VERSION."\n";
 283     $header .= 'X-Sender-IP: ['.$_SERVER['REMOTE_ADDR'].']';
 284 }
 285 else $header .= "Reply-To: $email";
 286
 287 $header = preg_replace("/\015\012|\012|\015/","\n",$header);
 288
 289 # Betreff mit Base64 codieren, wenn er Zeichen enthaelt,
 290 # die nicht aus dem ASCII-Zeichensatz stammen
 291
 292 if(preg_match("/[\200-\377]/",$subject)) {
 293     $encoded_subject = base64_encode($subject);
 294     $encoded_subject = wordwrap($encoded_subject,56,"\015\012",1);
 295     $encoded_subject = "=?$charset?B?$encoded_subject?=";
 296     $encoded_subject = str_replace("\015\012","?=\015\012         =?$charset?B?",$encoded_subject);
 297 }
 298 else $encoded_subject = $subject;
 299
 300 # Mailtext formatieren...
 301
 302 $mtpl = new Template;
 303 $mtpl->read_file($tpl_mail);
 304
 305 $mtpl->set_var('EMAIL',  $email);
 306 $mtpl->set_var('NAME',   $name);
 307 $mtpl->set_var('SUBJECT',$subject);
 308 $mtpl->set_var('TIME',   $time);
 309
 310 # ... Umgebungsvariablen einfuegen...
 311
 312 if(isset($allowed_envs) && is_array($allowed_envs)) {
 313     foreach($allowed_envs as $allowed_env) {
 314         if(isset($_SERVER[$allowed_env])) {
 315             $mtpl->set_var('ENV_'.$allowed_env,$_SERVER[$allowed_env]);
 316         }
 317         else {
 318             $mtpl->set_var('ENV_'.$allowed_env,'');
 319         }
 320     }
 321 }
 322
 323 # ... eigene Felder einfuegen
 324
 325 while(list($tpl_var,$user_field_content) = each($prepared_user_fields)) {
 326     $mtpl->set_var($tpl_var,$user_field_content);
 327 }
 328
 329 $mtpl->set_var('TEXT',$text);
 330
 331 $mtpl->parse();
 332
 333 $mailtext = $mtpl->get_template();
 334
 335 if($line_break) $mailtext = wordwrap($mailtext,$line_break);
 336
 337 $mailtext = preg_replace("/\015\012|\012|\015/","\n",$mailtext);
 338
 339 # ... und die Mail abschicken (bei einem Fehler erscheint eine Meldung)
 340
 341 if($recipient && is_array($aliases) && $aliases[$recipient]) {
 342     # Empfaenger mit Alias-Namen
 343
 344     $mailto = $aliases[$recipient];
 345 }
 346
 347 $mailto = semicolon_split($mailto);
 348
 349 for($x=0;$x<count($mailto);$x++) {
 350     mail($mailto[$x],$encoded_subject,$mailtext,$header) or die($err_send_error);
 351 }
 352
 353 # Mails auf Festplatte speichern
 354
 355 if(isset($store_mails) && $store_mails) {
 356     # Standard-Werte fuer einige Variablen
 357
 358     if(!isset($store_mails_dir)    || $store_mails_dir    == '') $store_mails_dir = 'stored_mails';
 359     if(!isset($store_mails_prefix) || $store_mails_prefix == '') $store_mails_prefix = 'feml_';
 360
 361     # Verzeichnis ggf. anlegen
 362
 363     if(!is_dir($store_mails_dir))   mkdir($store_mails_dir);
 364
 365     # Betreff saeubern
 366
 367     $clean_subject = str_replace(' ','_',$subject);
 368     $clean_subject = preg_replace('/[^a-z0-9\-_]/i','',$clean_subject);
 369
 370     # Eindeutigen Dateinamen der Mail zusammensetzen
 371
 372     $file_name = $store_mails_dir.'/'.uniqid($store_mails_prefix.$email.'_'.$clean_subject.'_'.strftime('%d%m%Y-%H%M%S',$timestamp));
 373
 374     # Daten in Datei schreiben
 375
 376     file_put_contents($file_name,$mailtext);
 377
 378     # Alte Dateien loeschen
 379
 380     if(isset($store_mails_max) && $store_mails_max > 0) {
 381         $dp = opendir($store_mails_dir);
 382
 383         while($stored_mail_file = readdir($dp)) {
 384             if($stored_mail_file != '.' && $stored_mail_file != '..' && substr($stored_mail_file,0,strlen($store_mails_prefix)) == $store_mails_prefix) {
 385                 $stored_mail_files[$store_mails_dir.'/'.$stored_mail_file] = filemtime($store_mails_dir.'/'.$stored_mail_file);
 386             }
 387         }
 388
 389         closedir($dp);
 390
 391         arsort($stored_mail_files);
 392
 393         #print sizeof($stored_mail_files);
 394
 395         #print_r($stored_mail_files);
 396
 397         $x = 0;
 398
 399         foreach(array_keys($stored_mail_files) as $stored_mail_filename) {
 400             $x++;
 401
 402             if($x > $store_mails_max) {
 403                 unlink($stored_mail_filename);
 404             }
 405         }
 406     }
 407 }
 408
 409 if($captcha_enable) session_destroy();
 410
 411 # Mail wurde erfolgreich versendet, also wird die Dankesseite angezeigt
 412
 413 if($return_url) {
 414     # Per Redirect auf Seite umleiten
 415
 416     if(strpos($return_url,'://') === false) {
 417         # URL vervollstaendigen
 418
 419         $http_host = ($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME'];
 420         $protocol  = '';
 421         $port      = '';
 422         $path      = '';
 423
 424         if(isset($_SERVER['HTTPS'])) {
 425             # SSL-verschluesseltes HTTP
 426
 427             $protocol = 'https://';
 428             if($_SERVER['SERVER_PORT'] != 443) $port = ':'.$_SERVER['SERVER_PORT'];
 429         }
 430         else {
 431             # Normales HTTP
 432
 433             $protocol = 'http://';
 434             if($_SERVER['SERVER_PORT'] != 80) $port = ':'.$_SERVER['SERVER_PORT'];
 435         }
 436
 437         if(substr($return_url,0,1) == '/') {
 438             $return_url = $protocol.$http_host.$port.$return_url;
 439         }
 440         else {
 441             if(substr($_SERVER['SCRIPT_NAME'],-1,1) == '/') {
 442                 $path = substr($_SERVER['SCRIPT_NAME'],0,-1);
 443             }
 444             else {
 445                 $path = $_SERVER['SCRIPT_NAME'];
 446             }
 447
 448             $path = substr($path,0,strrpos($path,'/')+1);
 449             if(substr($path,0,1) != '/') $path = '/'.$path;
 450
 451             $return_url = $protocol.$http_host.$port.$path.$return_url;
 452         }
 453     }
 454
 455     header('Status: 303 See Other');
 456     header('Location: '.$return_url);
 457 }
 458 else {
 459     # Mit Template formatierte Seite anzeigen
 460
 461     $stpl = new Template;
 462     $stpl->read_file($tpl_sent);
 463
 464     $stpl->set_var('EMAIL',  plain($email));
 465     $stpl->set_var('MAIL',   plain($mailtext));
 466     $stpl->set_var('NAME',   plain($name));
 467     $stpl->set_var('SUBJECT',plain($subject));
 468     $stpl->set_var('TEXT',   plain($text));
 469     $stpl->set_var('TIME',   plain($time));
 470
 471     reset($user_fields);
 472
 473     while(list($user_field,$user_field_data) = each($user_fields)) {
 474         if(isset($user_field_data['tpl_var']) && $user_field_data['tpl_var'] != '') {
 475             $tpl_var = $user_field_data['tpl_var'];
 476         }
 477         else {
 478             $tpl_var = 'USER_'.$user_field;
 479         }
 480
 481         $stpl->set_var($tpl_var,htmlspecialchars(formdata($user_field)));
 482     }
 483
 484     $stpl->parse();
 485
 486     print $stpl->get_template();
 487 }
 488
 489 #
 490 ### Ende ###
 491
 492 ?>