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23 lines
723 B
Bash
23 lines
723 B
Bash
#!/bin/sh
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#
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# This script reads in variables from a config file, and produces a list of
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# commands to run to set these as shell environment variables, it is
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# intended to be used as follows:
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#
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# eval $(readhash /var/ipfire/main/settings)
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#
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# shell variables must consist of alphanumeric characters and underscores,
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# and begin with an alphabetic character or underscore.
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VARNAME='[A-Za-z_][A-Za-z0-9_]*'
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# For the assigned value we only accept a limited number of characters - none
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# of which are shell metachars
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VARCHARS='A-Za-z0-9=/,.:_@#+-'
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VARVAL="[${VARCHARS}]*"
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sed -ne "s/\(${VARNAME}\)=\(${VARVAL}\)$/\1=\2/p" $1
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# Accept space only if it's quoted
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sed -ne "s/\(${VARNAME}\)=\('[ ${VARCHARS}]*'\)$/\1=\2/p" $1
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