form-email/mailer.php

   1 <?php
   2
   3 #
   4 # Form E-Mail 3.4.1
   5 #
   6 # Versenden einer E-Mail, die ueber ein Kontaktformular
   7 # geschrieben wurde.
   8 #
   9 # Autor:            Patrick Canterino <patrick@patshaping.de>
  10 # Letzte Aenderung: 24.2.2011
  11 #
  12 # Copyright (C) 2002-2011 Patrick Canterino
  13 #
  14 # Diese Datei kann unter den Bedingungen der "Artistic License 1.0"
  15 # weitergegeben und / oder veraendert werden.
  16 # Siehe:
  17 # http://www.opensource.org/licenses/artistic-license-1.0.php
  18 #
  19
  20 # ===========
  21 #  Hauptteil
  22 # ===========
  23
  24 require('config.php');
  25 require('functions.php');
  26 require('class.Template.php');
  27
  28 if($only_post && $_SERVER['REQUEST_METHOD'] != 'POST') show_fatal($err_only_post);
  29
  30 # Wenn Captchas aktiviert sind, Session starten
  31
  32 if($captcha_enable)
  33 {
  34  session_start();
  35
  36  # Pruefen, ob die zulaessige Zahl der Falscheingaben bei Captchas ueberschritten wurde
  37
  38  if($captcha_max && isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed'] >= $captcha_max)
  39  {
  40   show_fatal($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($err_invalid_email);
  94
  95 # Captcha ueberpruefen
  96
  97 if($captcha_enable)
  98 {
  99  $captcha_input     = formdata('captcha');
 100  $captcha_incorrect = false;
 101
 102  if(isset($_SESSION) && isset($_SESSION['captcha']))
 103  {
 104   if($captcha_case)
 105   {
 106    if(!$captcha_input || empty($captcha_input) || $captcha_input != $_SESSION['captcha']) $captcha_incorrect = true;
 107   }
 108   else
 109   {
 110    if(!$captcha_input || empty($captcha_input) || strtolower($captcha_input) != strtolower($_SESSION['captcha'])) $captcha_incorrect = true;
 111   }
 112
 113   if($captcha_incorrect)
 114   {
 115    if($captcha_max)
 116    {
 117     if(isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed'])
 118     {
 119      $_SESSION['captcha_failed']++;
 120     }
 121     else
 122     {
 123      $_SESSION['captcha_failed'] = 1;
 124     }
 125    }
 126
 127    if($captcha_max && isset($_SESSION['captcha_failed']) && $_SESSION['captcha_failed'] >= $captcha_max)
 128    {
 129     show_fatal($err_captcha_max);
 130    }
 131    else
 132    {
 133     show_user_error($err_captcha_incorrect);
 134    }
 135   }
 136  }
 137  else
 138  {
 139   show_fatal($err_captcha_session_failure);
 140  }
 141 }
 142
 143 # Referer ueberpruefen
 144
 145 if($check_referer)
 146 {
 147  $referer_ok = semicolon_split($referer_ok);
 148
 149  $referer_parts = parse_url($_SERVER['HTTP_REFERER']);
 150  $referer_host  = $referer_parts['host'];
 151
 152  if(in_array($referer_host,$referer_ok) === false) show_fatal($err_referer_not_ok);
 153 }
 154
 155 # Zeilenumbrueche in Namen und Betreff durch Leerzeichen ersetzen
 156
 157 $name    = preg_replace("/\015\012|\012|\015/",' ',$name);
 158 $subject = preg_replace("/\015\012|\012|\015/",' ',$subject);
 159
 160 # Uhrzeit formatieren
 161
 162 date_default_timezone_set($timezone);
 163 $time = strftime($timeformat);
 164
 165 # Header der Mail
 166
 167 $header = '';
 168
 169 if($friendly_sender)
 170 {
 171  if($friendly_sender == 2)
 172  {
 173   if(preg_match("/[\200-\377]/",$name))
 174   {
 175    # Absendernamen mit Base64 codieren
 176
 177    $encoded_name = base64_encode($name);
 178    $encoded_name = wordwrap($encoded_name,56,"\015\012",1);
 179    $encoded_name = "=?$charset?B?$encoded_name?=";
 180    $encoded_name = str_replace("\015\012","?=\015\012      =?$charset?B?",$encoded_name);
 181   }
 182   else
 183   {
 184    # Bestimmte Zeichen im Absendernamen codieren
 185
 186    $encoded_name = str_replace('"','\"',$name);
 187    $encoded_name = str_replace('(','\\(',$encoded_name);
 188    $encoded_name = str_replace(')','\\)',$encoded_name);
 189    $encoded_name = '"'.$encoded_name.'"';
 190   }
 191
 192   $header = "From: $encoded_name <$email>\n";
 193  }
 194  else $header = "From: $email\n";
 195 }
 196
 197 if($add_header)
 198 {
 199  if(!$friendly_sender) $header .= "Reply-To: $email\n";
 200  $header .= 'Content-Type: text/plain; charset="'.$charset.'"'."\n";
 201  $header .= 'Content-Transfer-Encoding: 8bit'."\n";
 202  $header .= 'MIME-Version: 1.0'."\n";
 203  $header .= 'X-Mailer: Form E-Mail 3.4.1'."\n";
 204  $header .= 'X-Sender-IP: ['.$_SERVER['REMOTE_ADDR'].']';
 205 }
 206 else $header .= "Reply-To: $email";
 207
 208 $header = preg_replace("/\015\012|\012|\015/","\n",$header);
 209
 210 # Betreff mit Base64 codieren, wenn er Zeichen enthaelt,
 211 # die nicht aus dem ASCII-Zeichensatz stammen
 212
 213 if(preg_match("/[\200-\377]/",$subject))
 214 {
 215  $encoded_subject = base64_encode($subject);
 216  $encoded_subject = wordwrap($encoded_subject,56,"\015\012",1);
 217  $encoded_subject = "=?$charset?B?$encoded_subject?=";
 218  $encoded_subject = str_replace("\015\012","?=\015\012         =?$charset?B?",$encoded_subject);
 219 }
 220 else $encoded_subject = $subject;
 221
 222 # Mailtext formatieren...
 223
 224 $mtpl = new Template;
 225 $mtpl->read_file($tpl_mail);
 226
 227 $mtpl->set_var('EMAIL',  $email);
 228 $mtpl->set_var('NAME',   $name);
 229 $mtpl->set_var('SUBJECT',$subject);
 230 $mtpl->set_var('TIME',   $time);
 231
 232 # ... Umgebungsvariablen einfuegen
 233
 234 if(isset($allowed_envs) && is_array($allowed_envs))
 235 {
 236  foreach($allowed_envs as $allowed_env)
 237  {
 238   if(isset($_SERVER[$allowed_env]))
 239   {
 240    $mtpl->set_var('ENV_'.$allowed_env,$_SERVER[$allowed_env]);
 241   }
 242   else
 243   {
 244    $mtpl->set_var('ENV_'.$allowed_env,'');
 245   }
 246  }
 247 }
 248
 249 $mtpl->set_var('TEXT',$text);
 250
 251 $mtpl->parse();
 252
 253 $mailtext = $mtpl->get_template();
 254
 255 if($line_break) $mailtext = wordwrap($mailtext,$line_break);
 256
 257 $mailtext = preg_replace("/\015\012|\012|\015/","\n",$mailtext);
 258
 259 # ... und die Mail abschicken (bei einem Fehler erscheint eine Meldung)
 260
 261 if($recipient && is_array($aliases) && $aliases[$recipient])
 262 {
 263  # Empfaenger mit Alias-Namen
 264
 265  $mailto = $aliases[$recipient];
 266 }
 267
 268 $mailto = semicolon_split($mailto);
 269
 270 for($x=0;$x<count($mailto);$x++)
 271 {
 272  mail($mailto[$x],$encoded_subject,$mailtext,$header) or die($err_send_error);
 273 }
 274
 275 if($captcha_enable) session_destroy();
 276
 277 # Mail wurde erfolgreich versendet, also wird die Dankesseite angezeigt
 278
 279 if($return_url)
 280 {
 281  # Per Redirect auf Seite umleiten
 282
 283  if(!preg_match('!://!',$return_url))
 284  {
 285   # URL vervollstaendigen
 286
 287   $http_host = ($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME'];
 288   $protocol  = '';
 289   $port      = '';
 290
 291   if($_SERVER['HTTPS'])
 292   {
 293    # SSL-verschluesseltes HTTP
 294
 295    $protocol = 'https://';
 296    if($_SERVER['SERVER_PORT'] != 443) $port = ':'.$_SERVER['SERVER_PORT'];
 297   }
 298   else
 299   {
 300    # Normales HTTP
 301
 302    $protocol = 'http://';
 303    if($_SERVER['SERVER_PORT'] != 80) $port = ':'.$_SERVER['SERVER_PORT'];
 304   }
 305
 306   if(preg_match('!^/!',$return_url))
 307   {
 308    $return_url = $protocol.$http_host.$port.$return_url;
 309   }
 310   else
 311   {
 312    if(preg_match('!/$!',$_SERVER['SCRIPT_NAME'])) $path = substr($_SERVER['SCRIPT_NAME'],0,-1);
 313    $path = substr($path,0,strrpos($path,'/')+1);
 314    if(!preg_match('!^/!',$path)) $path = '/'.$path;
 315
 316    $return_url = $protocol.$http_host.$port.$path.$return_url;
 317   }
 318  }
 319
 320  header('Status: 303 See Other');
 321  header('Location: '.$return_url);
 322 }
 323 else
 324 {
 325  # Mit Template formatierte Seite anzeigen
 326
 327  $stpl = new Template;
 328  $stpl->read_file($tpl_sent);
 329
 330  $stpl->set_var('EMAIL',  plain($email));
 331  $stpl->set_var('MAIL',   plain($mailtext));
 332  $stpl->set_var('NAME',   plain($name));
 333  $stpl->set_var('SUBJECT',plain($subject));
 334  $stpl->set_var('TEXT',   plain($text));
 335  $stpl->set_var('TIME',   plain($time));
 336
 337  $stpl->parse();
 338
 339  print $stpl->get_template();
 340 }
 341
 342 #
 343 ### Ende ###
 344
 345 ?>