Thanks for your answer. Is it actually possible to put in a javascript statement which simply refers to a text file for a list of allowed websites? I could keep adding to this list of websites simply in notepad.
Main Topics
Browse All Topics
Loading Advertisement...
Question
proxy.pac syntax configuration
I want to basically use the proxy for everything excepting about 20 sites like microsoft.com and google.com ... How do i accomplish this? As you can see below, i do have microsoft.com listed but how do I add additional sites? I don't want to be creating 20 else & return statements. I tried different combinations using the + sign after microosft.com but nothing seems to work
function FindProxyForURL(url, host)
{
if (isPlainHostName(host) || dnsDomainIs(host, ".mydomain.com"))
return "DIRECT";
else if (shExpMatch(host, "*.microsoft.com"))
return "DIRECT";
else if (shExpMatch(host, "*.com"))
return "PROXY myproxy.net:8080;"
else if (shExpMatch(host, "*.edu"))
return "PROXY myproxy.net:8080; " +
"PROXY myproxy.net:8080";
else
return "PROXY myproxy.net:8080;"
}
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Subscribe now for full access to Experts Exchange and get
Instant Access to this Solution
- Plus...
- 30 Day FREE access, no risk, no obligation
- Collaborate with the world's top tech experts
- Unlimited access to our exclusive solution database
- Never be left without tech help again
Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.
- "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
- "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
- "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.
See what Experts Exchange can do for you.
Got a question?
We've got the answer.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
Need individual assistance?
Our experts are ready to help.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Want to learn from the best?
Read articles from industry experts.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Working on a long term project?
Store your work and research.
Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
What Makes Experts Exchange Unique?
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.
Trusted by the world's most respected brands.
Faithfully serving IT professionals since 1996.
Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Free Tech Articles
-
WARNING: 5 Reasons why you should NEVER fix a computer for free.
It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
-
SCCM OSD Basic troubleshooting
SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
-
Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
-
Create a Win7 Gadget
This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
-
Outlook continually prompting for username and password
There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
-
Backup Exchange 2010 Information Store using Windows Backup
There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...
Cloud Class Webinars
- Avoiding Bugs in Microsoft Access
Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
- Top 10 Best New Features in Visio 2010
Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
- IT Consultant Business Secrets Revealed
Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
- Disaster Recovery and Business Continuity
Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
- Organize Your Visio Diagrams with Containers and Lists
Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
- How to Us Objects, Properties, Events and Methods in Microsoft Access
Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...
Join the Community
Give a Little. Get a Lot.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
Answers
My script is doing the same thing your script was doing, just with one if and one else and two returns. In fact you only need one if, and two returns like:
if (isPlainHostName(host)
|| dnsDomainIs(host, ".mydomain.com")
|| shExpMatch(host, "*.microsoft.com")
)
{ return "DIRECT"; }
return "PROXY myproxy.net:8080" ;
When you get another site you do not want to proxy you would just add:
|| shExpMatch(host, "*.google.com")
after the last check. I have moved the or's to make adding new entries a little easier.
Based on your original question you have a few hosts you want to do direct and everything else is proxy. So direct is an execption. You just need to check for the execptions, return direct on a match and everything else will use proxy.
Yes, I am trying to answer your original request. You wanted a way that you did not need to code a bunch of if's, else's, and returns. I have shown you how to modify your script to accomplish this.
You then stated that you would like to just put a list hosts in a text file if possible. However I do not beleive that javascript can read files.
I will look around more, but i don't think it can and most likely never will.
Eventhough Javascript has evloved over the last few years, part of the reason it is considered much more secure that ActiveX, .NET, and Java is that is has no access directly access to files. It only has access to what is within a Web page. Javascript it not a "true" programming language, but a language that allows you to manuplate data within Webpage. However for the same reasons it is considered more secure, it is also more restrictive and less robust of a language.
I have search and maybe you can search some more, but javascript can't directly read a file.
What it can do is "scan data" in a web page or scan data that is read by something else, like ActiveX. The web page can be an form of a html file or and xml file.
Here is a link that gives an example of activeX and javascript reading a text file and displaying it as table.
http://www.codetoad.com/ta
Again, javascript is NOT a real programming language. It is, by design, something to allow you to manulate web pages, which is not what you want to do.
What enviroment are you planning to do this in? If you are total MS enviroment you can control IE's proxy settings through GPO and the IEAK. If you using another browser, well your only option is autoproxy config files.
Hi Billwharton,
You have a very good request. Perhaps you can consider this approach. Instead of writing Javascript to read some file that has a list of disallowed URLs, try considering a CGI script (using Perl or other language) and then output the results as the proxy.pac file. By using CGI script you can pretty much do what you want. It can read a list from the file (stored on the server) and then output the proxy.pac dynamically.
There are considerable examples on how to write CGI using Perl to output proxy.pac files. I presume this is a Linux box? Even if it is not, CGI's will be easy to deploy. I know why you mentioned about the Javascript reading a file for the list of URLs. Well, even though proxy.pac is nothing but a javascript file, the commands that you can use in proxy.pac is very limited.
I am not a guru on Perl, but if you want, I can post some preliminary outline of the script.
-Sree
Sree, good idea, but my personal opinion is that is a bit of work to get around adding a single line to a file.
The browser must have access to the proxy.pac file when it starts. Which means that the proxy.pac file need to be there when I lanuch the browser. That I am aware you can't through a program tell the browser to reload the proxy.pac file.
He may be able to create a CGI script that will read a text file and then create the proxy.pac file based on that, but the proxy.pac will not be reading the text file. Now if he does get something setup to dynmically create the proxy.pac, he need to get the browser to reload the proxy.pac. Which again, I don't think you can do through any client side scripting. The user would need to manaully reload the proxy.pac file, either stop and restart the browser or in mozilla based browers go into options/perferences and go like they were going to configure proxy setting and click on reload. For IE at a minumun you have to uncheck and recheck the use autoproxy config file. However you may hae to uncheck save the setting, reopen and re-check the use autoproxy config, or just close and re-open IE.
I see your point giltjr, that is always an issue even if billwharton manually edits the proxy.pac files to add the new URLs. The reloading issue was the first thing that came to my mind, but then it would be a issue with manually editing the proxy.pac file to add the URL list. But the whole idea is to have the proxy.pac file itself as a perl script, which would execute everytime the browser sends a URI request. Anyhow, since the author has preferred the manually adding to the proxy.pac files, I will not post any comments, unless you folks want the perl script method.
Thanks Bill for the points.
-Sree
Actually you may be on to something. I have not tried this, in fact I just found it, but:
http://japc.sourceforge.ne
Is a Java based server side autoproxy managment program. You use a XML formated file to manage your proxy config list. You point your browser to:
http://localhost:8080/Auto
Of couse changing what you need for your site. The interesting point is that you don't need to point it to a .pac file, which I always thought you had to do. I don't know what it response with, I would assume a valid autoproxy pac file. So, I would assume that if Sree has a Perl script that can create a .pax file from a plain text file that you could code:
http://yourwebserver/cgi-b
or something like that. Then the users get what ever was current when they started their browser.
Hi Billwharton,
I am not sure what OS you are running the proxy on, but here is a small script written in perl. Just copy and paste this code as proxy.pac file and then make this file as a cgi-script under your webserver/proxy server. I didn't have all the proxy.pac code, but hope you can understand the basic theme. I tried it on my local desktop with a local perl interpreter, but it should work for Unix too. (Just make sure you have the first line modified to point it to the Perl binary (for Unix only)).
#!/usr/local/bin/perl
# Please change the line above to reflect your path to Perl binary (Unix)
# For this to work, your web server needs to know that the proxy.pac is a CGI script.
# Start generating the proxy.pac file
print <<"EOI";
Content-type: application/x-ns-proxy-aut
if (isPlainHostName(host)
|| dnsDomainIs(host, ".mydomain.com")
|| shExpMatch(host, "*.microsoft.com")
EOI
#Process the file containing the list of domains to be blocked.
#Provide the filename where you stored the list of domains to be blocked.
$filename = "C://nohosts.txt";
#Open the file and see if it does open properly.
open (EXAMPLE, "<$filename") || die ("Could not open file <br> $!");
$name = <EXAMPLE>;
#Loop through the file till the end
while ($name){
$name =~ s/^\s*(.*?)\s*$/$1/;
print " || shExpMatch (host, \"*.$name\")";
$name = <EXAMPLE>;
print "\n";
}
#Close the file.
close (EXAMPLE);
#Just output without any processing. End of Interrupt/input.
print <<"EOI";
)
{ return "DIRECT"; }
return "PROXY myproxy.net:8080" ;
EOI
Cheers.
-Sree
3 Ways to Join
Business Accounts
- Perfect for organizations
- Multiple users
- Save over 36%
- Create a Business Account
Answer for Membership
- Earn free access
- Showcase your knowledge
- No credit card required
- Sign Up to Answer
Loading Advertisement...
by: sreeraoPosted on 2005-08-04 at 14:47:19ID: 14603134
Try this:
shExpMatch(host,"*.abc.com
-sree