On Windows machines (and networks with a lot of Windows machines), the use of Proxy Autoconfiguration scripts is rather ubiquitous for reasons; on Linux distributions (e.g. CentOS), it is more common for applications to consult several environment variables: http_proxy, https_proxy and no_proxy for exceptions. Here's a sample setting of these three:
export http_proxy=http://my.proxy:8080
export https_proxy=https://my.proxy:8443
no_proxy=192.168.1.*,localhost,example.org
My question: Given a PAC script (say, as a text file or on the standard input stream), how can I obtain these three lines from it?
Now, I suspect the answer may be "you can't, they're Turing complete". If that's the case, are there classes of common PAC file templates which are simple enough to avoid a general hardness result?
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