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Top Forums Programming Javascript PAC file and variables Post 302463818 by harrydbrownjr on Monday 18th of October 2010 01:52:08 PM
Old 10-18-2010
Lavascript,

the following code will fail when using Firefox in wondows 7 and I think windows vista:

Code:
// Now use main proxies based on odd/even

// find the 4th octet - 
var ipbits=myip.split(".");
var myseg=parseInt(ipbits[3]);

// If even use proxy1 first
if(myseg==Math.floor(myseg/2)*2) {
   var proxyone=chpv1;
   var proxytwo=chpv2;
   var proxythree=shrp1;
}
else {
// Must be odd use proxy2 first
   var proxyone=chpv2;
   var proxytwo=chpv1;
   var proxythree=shrp1;
}

It fails because myip.split(".") will result in "ipbits" not being an array with 4 elements in it because Windows 7 (and I think Vista) returns an IPv6 address that has colons (Smilie as separators and the values are hex strings.

Try this instead:

Code:
	// split the IPv4 address into a 4 element array 
	var ipbits = myip.split(".");

	// make sure this is an IPv4 address, which is > 1
	if (ipbits.length > 1)
	{
		// we think we have an IPv4 address here
		// grab the 4th octet and convert it to a decimal
		var myseg = parseInt(ipbits[3]);
	} else {		
		// we have a potential IPv6 address here
		// split the IPv6 address into a 6 element array
		var ipbits = myip.split(":");

		if (ipbits.length > 1)
		{
			// looks like we have an IPv6 address here
			// grab the 6th octet and convert it from hex to decimal
			var myseg = parseInt(ipbits[5],16);
		} else {
			// NOT AN IPv6 either, so ODD it will be by us forcing it to a 1!!!
			var myseg = 1;
		}
	}


	// take the modulus 2 of the myseg where 1 = odd, 0 = even
	var mycalcseg = myseg % 2;

	if (mycalcseg == 1) {
		// ODD number (mycalcseg = 1)
		var proxyone = proxyONEip;
		var proxytwo = proxyTWOip;
	} else {
		// EVEN number (mycalcseg = 0)
		var proxyone = proxyTWOip;
		var proxytwo = proxyONEip;
	}

 

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Heimdal Kerberos 5 PAC handling functions(3)		      HeimdalKerberos5library		      Heimdal Kerberos 5 PAC handling functions(3)

NAME
Heimdal Kerberos 5 PAC handling functions - Functions KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_pac_get_buffer (krb5_context context, krb5_pac p, uint32_t type, krb5_data *data) KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_pac_verify (krb5_context context, const krb5_pac pac, time_t authtime, krb5_const_principal principal, const krb5_keyblock *server, const krb5_keyblock *privsvr) Detailed Description Function Documentation KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_pac_get_buffer (krb5_context context, krb5_pac p, uint32_t type, krb5_data * data) Get the PAC buffer of specific type from the pac. Parameters: context Kerberos 5 context. p the pac structure returned by krb5_pac_parse(). type type of buffer to get data return data, free with krb5_data_free(). Returns: Returns 0 to indicate success. Otherwise an kerberos et error code is returned, see krb5_get_error_message(). KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL krb5_pac_verify (krb5_context context, const krb5_pac pac, time_t authtime, krb5_const_principal principal, const krb5_keyblock * server, const krb5_keyblock * privsvr) Verify the PAC. Parameters: context Kerberos 5 context. pac the pac structure returned by krb5_pac_parse(). authtime The time of the ticket the PAC belongs to. principal the principal to verify. server The service key, most always be given. privsvr The KDC key, may be given. Returns: Returns 0 to indicate success. Otherwise an kerberos et error code is returned, see krb5_get_error_message(). Version 1.5.2 11 Jan 2012 Heimdal Kerberos 5 PAC handling functions(3)
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