// Jun 2003
// functions to check if given URL is accessible
// Both the cdinsert and itrans online interfaces form.php3 use this
// - they both have the Submit button named "webform.submitkey" for this to work
// to trigger this, add a img src pointing to the url to test, example:
//$img = "http://${remotehost}/favicon.ico";
//echo "![](\"$img\")
";
//
// add this line between ...
//
// Jan 2005: portBlocked no longer works with Internet Explorer 6.0
// if img is a .ico file.
//---
// there was a bug in IE 5.0, where img and onError did not work:
// http://support.microsoft.com/default.aspx?scid=kb;en-us;251109
// "Local Files May Be Accessed By Using JavaScript Linked to Image Tag"
// But looks like in IE 6.0 the problem still exists for .ico files
// So, use a .gif file in the img (such as transpdot.gif)
//-------------------------------------------------------------------
// cookies.js:
/**
* Read the JavaScript cookies tutorial at:
* http://www.netspade.com/articles/javascript/cookies.xml
*/
/**
* Sets a Cookie with the given name and value.
*
* name Name of the cookie
* value Value of the cookie
* [expires] Expiration date of the cookie (default: end of current session)
* [path] Path where the cookie is valid (default: path of calling document)
* [domain] Domain where the cookie is valid
* (default: domain of calling document)
* [secure] Boolean value indicating if the cookie transmission requires a
* secure transmission
*/
function setCookie(name, value, expires, path, domain, secure)
{
document.cookie= name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "");
}
/**
* Gets the value of the specified cookie.
*
* name Name of the desired cookie.
*
* Returns a string containing value of specified cookie,
* or null if cookie does not exist.
*/
function getCookie(name)
{
var dc = document.cookie;
var prefix = name + "=";
var begin = dc.indexOf("; " + prefix);
if (begin == -1)
{
begin = dc.indexOf(prefix);
if (begin != 0) return null;
}
else
{
begin += 2;
}
var end = document.cookie.indexOf(";", begin);
if (end == -1)
{
end = dc.length;
}
return unescape(dc.substring(begin + prefix.length, end));
}
/**
* Deletes the specified cookie.
*
* name name of the cookie
* [path] path of the cookie (must be same as path used to create cookie)
* [domain] domain of the cookie (must be same as domain used to create cookie)
*/
function deleteCookie(name, path, domain)
{
if (getCookie(name))
{
document.cookie = name + "=" +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}
//-------------------------------------------------------------------
// Port checking - blocked or not
var access_denied = false;
var access_denied_text = "Outbound TCP Port may be blocked.\nBehind restrictive firewall?\nMay or may not work from your site (click on Submit to try it).\n";
var access_src = "";
var checked_cookie = "portIsBlocked";
function portBlocked(port, picSrc) {
var blockedParagraph = document.getElementById("blockedParagraph");
access_denied = true;
access_src = "Port " + port + " " + picSrc;
//----------
// commented out key disabling - Jan 2005 - bugs in IE can cause false alarms
// So, don't block the key, let the user be able to click it, just
// print the warning in case it does not work...
// document.webform.submitkey.disabled = true;// true grays out, hard to read
//----------
blockedParagraph.innerHTML = "" + access_denied_text + "
" + access_src + "
";
if (!getCookie(checked_cookie + port)) {
alert(access_denied_text + access_src);
setCookie(checked_cookie + port, "true", null, "/", null);
}
}
function checkAccess() {
if (access_denied) {
alert(access_denied_text + access_src);
return false;
}
// if the code got up to here, we can submit the form
return true;
}
//-------------------------------------------------------------------