 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Java Forum / General / August 2007help me with a program
How to create a java program to validate date and email id entered.I think an algorithm will also do just fine. I am still learning java please help. > How to create a java program to validate date and email id entered.I > think an algorithm will also do just fine. I am still learning java > please help. First, you should give a better subject line when posting here. "Help with Date and Email validation" would have been better. And simply "Date and Email validation" would have been even better. Back to your question: regex (java.util.Pattern) to "help" validate these, but in general, e- mail addresses can only be validated by sending a message with a "secret" to that address, and having the recipient inform your system of the secret. I once spent some time creating a regex that validates the syntax of an e-mail address, but it really was pointless after all. As for the date, you could also probably use SimpleDateFormat class to try to parse the date. >How to create a java program to validate date and email id entered.I >think an algorithm will also do just fine. I am still learning java >please help. for a very elaborate algorithm to validate email address, look at the code posted at http://mindprod.com/products1.html#BULK For code to parse a date, and in the process validate it, see http://mindprod.com/jgloss/calendar.html  SignatureRoedy Green Canadian Mind Products The Java Glossary http://mindprod.com On Jul 26, 11:19 am, Roedy Green <see_webs...@mindprod.com.invalid> wrote: > for a very elaborate algorithm to validate email address, look at the > code posted athttp://mindprod.com/products1.html#BULK YOUR WEB SERVER HAS BEEN HACKED. TAKE IT OFFLINE AND FIX THE SECURITY HOLE AND THE ALTERED CONTENT ASAP. This is not a drill. The URL above, which I trust you intended to be simply informative, instead completely wedges Firefox and probably is trying to do something that would have much nastier consequences in the presence of Internet Exploder. This indicates that your webhost was compromised and the file contents altered (probably adding a 1x1 iframe linking to an evil script hosted somewhere else entirely; that's what these jokers usually do) to try to exploit browser bugs and do something malicious like install spyware on visitors' computers. If you can patch the server's security yourself do so. If not, change hosting provider to someone other than Dreamhost (a guess but likely correct; there's been a lot of discussion in certain circles of their recent repeated major security breaches, adding exactly these sorts of malicious but subtle changes to honest web pages) and from your current provider (if different). Then fix or restore all the altered files (restoring every single file from a known-good backup is safest but may lose recent changes) and put the site back on the air. If you do change host, do be sure to tell them exactly, in excruciating detail, why you are doing so as well. Maybe they'll eventually shape up if they get enough such negative feedback. If you host yourself and can't find out how the attack was done and how to prevent it happening again, you probably want to change server software (if it's IIS then for Christ's sake change it NOW!) and you may want to change to professional hosting that knows what they're doing security-wise (i.e. not Dreamhost!) ... I hope this has been caught and gets fixed before anyone has genuinely been burned. Otherwise your excellent Java site's reputation is probably irretrievably in the toilet. :( > On Jul 26, 11:19 am, Roedy Green <see_webs...@mindprod.com.invalid> > wrote: [quoted text clipped - 13 lines] > and do something malicious like install spyware on visitors' > computers. Works fine for me. Firefox, even. No difficulties whatsoever. SignatureLew > Works fine for me. Firefox, even. No difficulties whatsoever. So he fixed it in at most an hour -- good. Still alarming that this happened. I've run into malicious iframes myself once or twice before but without such a drastic consequence. This time, click a link and boom! Dead browser, ctrl-alt-del end-task, and God knows what the buggy page content was trying to do probably under the faulty assumption that the user-agent was IE. > > On Jul 26, 11:19 am, Roedy Green <see_webs...@mindprod.com.invalid> > > wrote: > >> http://mindprod.com/products1.html#BULK > > This is not a drill. The URL above, which I trust you intended to be > > simply informative, instead completely wedges Firefox What, just because a page toasts Firefox it's indicative of some kind of security flaw? *shrug* Firefox may not be M$ crap, but it's got bugs. If it's tripping your antivirus, of course, that's a different story. Looking at the page source, however, I see no <iframe> tags at all, nor any particularly unsavory-looking script, nor does Firefox so much as blink. I would not be so quick to don the tin-foil hat in the absence of more convincing evidence. SignatureC. Benson Manica | I appreciate all corrections, polite or otherwise. cbmanica(at)gmail.com | ----------------------| I do not currently read any posts posted through sdf.lonestar.org | Google groups, due to rampant unchecked spam. On Jul 27, 5:02 pm, Christopher Benson-Manica <at...@faeroes.freeshell.org> wrote: > > > On Jul 26, 11:19 am, Roedy Green <see_webs...@mindprod.com.invalid> > > > wrote: [quoted text clipped - 4 lines] > What, just because a page toasts Firefox it's indicative of some kind > of security flaw? That's a denial-of-service attack, even assuming it wasn't an attempt at something worse. > *shrug* Firefox may not be M$ crap, but it's got bugs. Evidently. And trying to exploit them, as the defaced site code evidently did, is still an attack even if they aren't M$ bugs. Most likely the evil script someone snuck in there tried to do something that would have compromised a sufficiently out of date IE and, being malformed in some way in order to exploit that bug, also tripped a less severe bug in Firefox. > Looking at the page source, however, I see no <iframe> tags at > all, nor any particularly unsavory-looking script, nor does Firefox so > much as blink. That's because it was fixed (indeed, within 1 hour of my reporting it). Nonetheless that page did crash Firefox and no longer does, meaning something on that page changed. I find it highly unlikely that someone of Roedy's reputation constructed the page to crash Firefox in the first place, which suggests it actually changed to do so and then changed BACK. The first change would be a defacement perpetrated by someone else not authorized by Roedy to alter his Web site's code and the second would be Roedy undoing the damage after receiving a heads- up. Unless you have an alternative theory to explain it? (Other than that I'm simply making this up, a theory that I know to be false even if I can't prove it to anyone else -- since the browser hung as soon as it tried to load the page I had no way of getting a look at the page source until it was fixed, whereupon obviously there'd be nothing relevant to see in said source anymore, so I don't have and could never have had a copy of the source with the malicious edit still intact. And I was sure as *hell* not going to try to access it in IE to get a look at the source! Maybe I should have tried viewing it in FF with JS disabled but it didn't occur to me until it was too late and the page had been fixed.) > since the browser hung as soon as it tried to load the page I had no > way of getting a look at the page source until it was fixed, import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; public class Wget { public static void main(String[] args) throws Exception { URL url = new URL("http://mindprod.com/products1.html#BULK"); URLConnection connection = url.openConnection(); HttpURLConnection httpConn = (HttpURLConnection) connection; InputStreamReader isr = new InputStreamReader(httpConn.getInputStream()); BufferedReader in = new BufferedReader(isr); String inputLine; while ((inputLine = in.readLine()) != null) System.out.println(inputLine); in.close(); } } > > On Jul 26, 11:19 am, Roedy Green <see_webs...@mindprod.com.invalid> > > wrote: [quoted text clipped - 15 lines] > > Works fine for me. Firefox, even. No difficulties whatsoever. Was there ever any public confirmation that the above-mentioned Web page was maliciously changed, and then fixed? As the revised subject line indicates, I'm mildly curious .... SignatureB. L. Massingill ObDisclaimer: I don't speak for my employers; they return the favor. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
|
Reply to this Message
|
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.