if (preg_match("|\r\n|", $_POST['email'])){ die("Spammer."); } if (preg_match("|\r\n|", $_POST['subject'])){ die("Spammer."); } //and so on for anything you put into headers. //body can contain newlines, of course.
On Sat, June 9, 2007 8:22 pm, Austin C wrote: > how can I tell them not to include new lines? > > On 6/9/07, Richard Lynch <[EMAIL PROTECTED]> wrote: >> >> The return value of http://php.net/mail only says whether or not PHP >> managed to queue up the email to go out. >> >> It does *NOT* imply that the email actually went anywhere. >> >> If your server isn't running through the queues and sending the >> emails, they don't go out. >> >> If your server is rejecting the emails as it runs through the queue, >> they don't go out. >> >> If your mail reader is marking them as spam and trashing them before >> you see them, they went out, but you never got them. >> >> *ALSO*, and this is aboslutely crucial, if you DO get email to go >> out, >> you've just built an OPEN RELAY that will cheerfully send out >> MILLIONS >> of spam mail! DON'T DO THAT!!! >> >> The problem is that a Bad Guy can put something like this in >> POST['contact']: >> >> "[EMAIL PROTECTED]> >> [EMAIL PROTECTED] >> [EMAIL PROTECTED] >> [EMAIL PROTECTED] >> . >> . >> . >> [EMAIL PROTECTED] >> <[EMAIL PROTECTED]" >> >> YOUR email script will then spew the same message to 1000 users! >> >> You need to sanitize user input -- Emails and names, for example, >> should NOT contain newlines. >> >> On Fri, June 8, 2007 8:48 pm, Austin C wrote: >> > Hello, I just finished making a PHP contact form for my webite, >> and I >> > can >> > run through the whole thing, and get no errors, but it doesnt >> email me >> > the >> > form contents. >> > >> > *Here is th actual form page:* >> > <?php include("../header.php"); ?> >> > <td bgcolor="#BFC4CB"><b><font color="#333333">Contact >> > Me</font></b></td> >> > </tr> >> > </table> >> > </td> >> > </tr> >> > <tr> >> > <td bgcolor="#BFC4CB"> >> > <p> >> > <font color="#333333"> >> > Please use this form to contact me: >> > <p> >> > <br><center><form action="processcontactform.php" method="post"> >> > Name: <input type="text" name="name" size="20"> >> > <br>Email Address/Method of Contact: <input type="text" >> name="contact" >> > size="30"> >> > <br>Reason for Contact: <select name="reasonforcontact"> >> > <option value="question">Question</option> >> > <option value="suggestion">Suggestion</option> >> > <option value="gcomment">General Comment</option> >> > <option value="fanmail">Fan Mail</option> >> > <option value="other">Other</option> >> > </select> >> > <br>Message: <br><textarea name="message1" rows="10" >> > cols="30"></textarea> >> > <br><input type="submit" value="send"> >> > </form></center> >> > <?php include("../footer.php"); ?> >> > >> > *Here is the form page processor:* >> > <?php include("../header.php"); ?> >> > <td bgcolor="#BFC4CB"> >> > <b> >> > <font color="#333333">Processing your information . . >> > .</font></b></td> >> > </tr> >> > </table> >> > </td> >> > </tr> >> > <tr> >> > <td >> bgcolor="#BFC4CB"> >> > <p> >> > <font >> color="#333333"> >> > <?php >> > $name = $_POST['name']; >> > $email = $_POST['contact']; >> > $reason = $_POST['reasonforcontact']; >> > $message = $_POST['message1']; >> > >> > $to = "[EMAIL PROTECTED]"; >> > >> > $subject = "Contact Form Submitted at GWD-Dev"; >> > >> > $body = "Hello Austin, >> > >> > ".$name." has sent in a contact form at GWD-Dev. The reason >> he/she >> > contacted you was for ".$reason.". Here is the message they >> submitted >> > with >> > their form: >> > >> > >> > >> > ".$message." >> > >> > The contact field of the form contained the following >> information: >> > ".$email." >> > Please remember to get back to them ASAP!!"; >> > >> > $headers = "From: ".$name." <".$email.">\n"; >> > >> > >> > >> > echo "Collecting information . . . . . . . . . . DONE!<p>"; >> > >> > $mail_sent = @mail($to, $subject, $body, $headers); >> > >> > echo $mail_sent ? "<br>Sending contact form to webmaster . . . . >> . . >> > . . >> > DONE!<p>" : "<script>alert('The mail did not go >> through')</script>"; >> > >> > >> > echo "<br>. . . . . . . . . . . . . . . . . . . . . . . . . . . . >> . . >> > . . . >> > . . . .<p>"; >> > >> > echo "<br>Thank you for contacting us, please expect a reply in >> > anywhere >> > from 1 to 24 hours. Make sure that our email address, >> > [EMAIL PROTECTED]& >> > [EMAIL PROTECTED], are not sent to your spam >> folder."; >> > >> > >> > include("../footer.php"); ?> >> > >> > -- >> > Thanks, the webmaster of Galacticneo >> > >> >> >> -- >> Some people have a "gift" link here. >> Know what I want? >> I want you to buy a CD from some indie artist. >> http://cdbaby.com/browse/from/lynch >> Yeah, I get a buck. So? >> >> > > > -- > Thanks, the webmaster of Galacticneo > -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some indie artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php