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: 12.12.2011
  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 # Danke an "ich" aus dem SELFHTML Forum fuer die Muehe
  88
  89 $mail_regexp = ($no_tld)
  90              ? '/^([a-z0-9]+([\.]?|[-]?|[_]?)?)*([a-z0-9]+([\.]?[_]?)?)@([a-z0-9]+([\.]?|[-]?)?)*[a-z0-9]$/i'
  91              : '/^([a-z0-9]+([\.]?|[-]?|[_]?)?)*([a-z0-9]+([\.]?[_]?)?)@([a-z0-9]+([\.]?|[-]?)?)*[a-z0-9]+\.{1}[a-z]{2,6}$/i';
  92
  93 if(!preg_match($mail_regexp,$email)) show_user_error($err_invalid_email);
  94
  95 # Individuelle Felder einlesen
  96
  97 $prepared_user_fields = array();
  98
  99 while(list($user_field,$user_field_data) = each($user_fields)) {
 100     $user_field_content = formdata($user_field);
 101
 102     # Pruefung, ob das Feld gesetzt wurde und ob es optional ist
 103
 104     if((!$user_field_data['optional']) && (!$user_field_content)) {
 105         show_user_error($user_field_data['errors']['not_set']);
 106     }
 107     elseif($user_field_data['optional'] && (!$user_field_content)) {
 108         # Wenn das Feld optional ist und nicht gesetzt wurde, brechen wir hier ab
 109         # und machen mit dem naechsten Feld weiter
 110
 111         $prepared_user_fields[$user_field_data['tpl_var']] = '';
 112         continue;
 113     }
 114
 115     # Laengen-Pruefung
 116
 117     if(isset($user_field_data['min']) && $user_field_data['min']) {
 118         if(strlen($user_field_content) < $user_field_data['min']) {
 119             if(isset($user_field_data['errors']['too_short'])) {
 120                 show_user_error($user_field_data['errors']['too_short']);
 121             }
 122             else {
 123                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'too_short', 'INDIVIDUAL' => $user_field));
 124             }
 125         }
 126     }
 127
 128     if(isset($user_field_data['min']) && $user_field_data['max']) {
 129         if(strlen($user_field_content) > $user_field_data['max']) {
 130             if(isset($user_field_data['errors']['too_long'])) {
 131                 show_user_error($user_field_data['errors']['too_long']);
 132             }
 133             else {
 134                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'too_long', 'INDIVIDUAL' => $user_field));
 135             }
 136         }
 137     }
 138
 139     # Pruefung gegen frei definierbare Pruef-Funktion
 140
 141     if(isset($user_field_data['check']) && $user_field_data['check'] != '') {
 142         if(function_exists($user_field_data['check']) && call_user_func($user_field_data['check'],$user_field_content) === false) {
 143             if(isset($user_field_data['errors']['check_fail'])) {
 144                 show_user_error($user_field_data['errors']['check_fail']);
 145             }
 146             else {
 147                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'check_fail', 'INDIVIDUAL' => $user_field));
 148             }
 149         }
 150     }
 151
 152     # Pruefung gegen frei definierbaren regulaeren Ausdruck
 153
 154     if(isset($user_field_data['regex']) && $user_field_data['regex'] != '') {
 155         if(!preg_match($user_field_data['regex'],$user_field_content)) {
 156             if(isset($user_field_data['errors']['match_fail'])) {
 157                 show_user_error($user_field_data['errors']['match_fail']);
 158             }
 159             else {
 160                 show_fatal($err_indiv_errmsg_miss,array('ERRMSG' => 'match_fail', 'INDIVIDUAL' => $user_field));
 161             }
 162         }
 163     }
 164
 165     # Formularfeld durch frei definierbare Funktion bearbeiten
 166
 167     if(isset($user_field_data['prepare']) && $user_field_data['prepare'] != '') {
 168         if(function_exists($user_field_data['check'])) {
 169             $user_field_content = call_user_func($user_field_data['prepare'],$user_field_content);
 170         }
 171     }
 172
 173     # Fertige Formulardaten wegkopieren und fuer spaeter zur Verfuegung stellen
 174
 175     $prepared_user_fields[$user_field_data['tpl_var']] = $user_field_content;
 176 }
 177
 178 # Captcha ueberpruefen
 179
 180 if($captcha_enable) {
 181     $captcha_input     = formdata('captcha');
 182     $captcha_incorrect = false;
 183
 184     if(isset($_SESSION) && isset($_SESSION['captcha'])) {
 185         if($captcha_case) {
 186             if(!$captcha_input || empty($captcha_input) || $captcha_input != $_SESSION['captcha']) $captcha_incorrect = true;
 187         }
 188         else {
 189             if(!$captcha_input || empty($captcha_input) || strtolower($captcha_input) != strtolower($_SESSION['captcha'])) $captcha_incorrect = true;
 190         }
 191
 192         if($captcha_incorrect) {
 193             if($captcha_max) {
 194                 if(isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed']) {
 195                     $_SESSION['captcha_failed']++;
 196                 }
 197                 else {
 198                     $_SESSION['captcha_failed'] = 1;
 199                 }
 200             }
 201
 202             if($captcha_max && isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed'] >= $captcha_max) {
 203                 show_fatal($err_captcha_max);
 204             }
 205             else {
 206                 show_user_error($err_captcha_incorrect);
 207             }
 208         }
 209     }
 210     else {
 211         show_fatal($err_captcha_session_failure);
 212     }
 213 }
 214
 215 # Referer ueberpruefen
 216
 217 if($check_referer) {
 218     $referer_ok = semicolon_split($referer_ok);
 219
 220     $referer_parts = parse_url($_SERVER['HTTP_REFERER']);
 221     $referer_host  = $referer_parts['host'];
 222
 223     if(in_array($referer_host,$referer_ok) === false) show_fatal($err_referer_not_ok);
 224 }
 225
 226 # Zeilenumbrueche in Namen und Betreff durch Leerzeichen ersetzen
 227
 228 $name    = preg_replace("/\015\012|\012|\015/",' ',$name);
 229 $subject = preg_replace("/\015\012|\012|\015/",' ',$subject);
 230
 231 # Uhrzeit formatieren
 232
 233 date_default_timezone_set($timezone);
 234 $time = strftime($timeformat);
 235
 236 # Header der Mail
 237
 238 $header = '';
 239
 240 if($friendly_sender) {
 241     if($friendly_sender == 2) {
 242         if(preg_match("/[\200-\377]/",$name)) {
 243             # Absendernamen mit Base64 codieren
 244
 245             $encoded_name = base64_encode($name);
 246             $encoded_name = wordwrap($encoded_name,56,"\015\012",1);
 247             $encoded_name = "=?$charset?B?$encoded_name?=";
 248             $encoded_name = str_replace("\015\012","?=\015\012      =?$charset?B?",$encoded_name);
 249         }
 250         else {
 251             # Bestimmte Zeichen im Absendernamen codieren
 252
 253             $encoded_name = str_replace('"','\"',$name);
 254             $encoded_name = str_replace('(','\\(',$encoded_name);
 255             $encoded_name = str_replace(')','\\)',$encoded_name);
 256             $encoded_name = '"'.$encoded_name.'"';
 257         }
 258
 259         $header = "From: $encoded_name <$email>\n";
 260     }
 261     else $header = "From: $email\n";
 262 }
 263
 264 if($add_header) {
 265     if(!$friendly_sender) $header .= "Reply-To: $email\n";
 266     $header .= 'Content-Type: text/plain; charset="'.$charset.'"'."\n";
 267     $header .= 'Content-Transfer-Encoding: 8bit'."\n";
 268     $header .= 'MIME-Version: 1.0'."\n";
 269     $header .= 'X-Mailer: Form E-Mail '.$VERSION."\n";
 270     $header .= 'X-Sender-IP: ['.$_SERVER['REMOTE_ADDR'].']';
 271 }
 272 else $header .= "Reply-To: $email";
 273
 274 $header = preg_replace("/\015\012|\012|\015/","\n",$header);
 275
 276 # Betreff mit Base64 codieren, wenn er Zeichen enthaelt,
 277 # die nicht aus dem ASCII-Zeichensatz stammen
 278
 279 if(preg_match("/[\200-\377]/",$subject)) {
 280     $encoded_subject = base64_encode($subject);
 281     $encoded_subject = wordwrap($encoded_subject,56,"\015\012",1);
 282     $encoded_subject = "=?$charset?B?$encoded_subject?=";
 283     $encoded_subject = str_replace("\015\012","?=\015\012         =?$charset?B?",$encoded_subject);
 284 }
 285 else $encoded_subject = $subject;
 286
 287 # Mailtext formatieren...
 288
 289 $mtpl = new Template;
 290 $mtpl->read_file($tpl_mail);
 291
 292 $mtpl->set_var('EMAIL',  $email);
 293 $mtpl->set_var('NAME',   $name);
 294 $mtpl->set_var('SUBJECT',$subject);
 295 $mtpl->set_var('TIME',   $time);
 296
 297 # ... Umgebungsvariablen einfuegen...
 298
 299 if(isset($allowed_envs) && is_array($allowed_envs)) {
 300     foreach($allowed_envs as $allowed_env) {
 301         if(isset($_SERVER[$allowed_env])) {
 302             $mtpl->set_var('ENV_'.$allowed_env,$_SERVER[$allowed_env]);
 303         }
 304         else {
 305             $mtpl->set_var('ENV_'.$allowed_env,'');
 306         }
 307     }
 308 }
 309
 310 # ... eigene Felder einfuegen
 311
 312 while(list($tpl_var,$user_field_content) = each($prepared_user_fields)) {
 313     $mtpl->set_var($tpl_var,$user_field_content);
 314 }
 315
 316 $mtpl->set_var('TEXT',$text);
 317
 318 $mtpl->parse();
 319
 320 $mailtext = $mtpl->get_template();
 321
 322 if($line_break) $mailtext = wordwrap($mailtext,$line_break);
 323
 324 $mailtext = preg_replace("/\015\012|\012|\015/","\n",$mailtext);
 325
 326 # ... und die Mail abschicken (bei einem Fehler erscheint eine Meldung)
 327
 328 if($recipient && is_array($aliases) && $aliases[$recipient]) {
 329     # Empfaenger mit Alias-Namen
 330
 331     $mailto = $aliases[$recipient];
 332 }
 333
 334 $mailto = semicolon_split($mailto);
 335
 336 for($x=0;$x<count($mailto);$x++) {
 337     mail($mailto[$x],$encoded_subject,$mailtext,$header) or die($err_send_error);
 338 }
 339
 340 if($captcha_enable) session_destroy();
 341
 342 # Mail wurde erfolgreich versendet, also wird die Dankesseite angezeigt
 343
 344 if($return_url) {
 345     # Per Redirect auf Seite umleiten
 346
 347     if(!preg_match('!://!',$return_url)) {
 348         # URL vervollstaendigen
 349
 350         $http_host = ($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME'];
 351         $protocol  = '';
 352         $port      = '';
 353
 354         if($_SERVER['HTTPS']) {
 355             # SSL-verschluesseltes HTTP
 356
 357             $protocol = 'https://';
 358             if($_SERVER['SERVER_PORT'] != 443) $port = ':'.$_SERVER['SERVER_PORT'];
 359         }
 360         else {
 361             # Normales HTTP
 362
 363             $protocol = 'http://';
 364             if($_SERVER['SERVER_PORT'] != 80) $port = ':'.$_SERVER['SERVER_PORT'];
 365         }
 366
 367         if(preg_match('!^/!',$return_url)) {
 368             $return_url = $protocol.$http_host.$port.$return_url;
 369         }
 370         else {
 371             if(preg_match('!/$!',$_SERVER['SCRIPT_NAME'])) $path = substr($_SERVER['SCRIPT_NAME'],0,-1);
 372             $path = substr($path,0,strrpos($path,'/')+1);
 373             if(!preg_match('!^/!',$path)) $path = '/'.$path;
 374
 375             $return_url = $protocol.$http_host.$port.$path.$return_url;
 376         }
 377     }
 378
 379     header('Status: 303 See Other');
 380     header('Location: '.$return_url);
 381 }
 382 else {
 383     # Mit Template formatierte Seite anzeigen
 384
 385     $stpl = new Template;
 386     $stpl->read_file($tpl_sent);
 387
 388     $stpl->set_var('EMAIL',  plain($email));
 389     $stpl->set_var('MAIL',   plain($mailtext));
 390     $stpl->set_var('NAME',   plain($name));
 391     $stpl->set_var('SUBJECT',plain($subject));
 392     $stpl->set_var('TEXT',   plain($text));
 393     $stpl->set_var('TIME',   plain($time));
 394
 395     $stpl->parse();
 396
 397     print $stpl->get_template();
 398 }
 399
 400 #
 401 ### Ende ###
 402
 403 ?>