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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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38 lines
1.2 KiB
Bash
38 lines
1.2 KiB
Bash
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#!/bin/sh
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# $FreeBSD$
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mime=$(file --mime-type $1)
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case $mime in
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*application/x-executable);;
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*application/x-sharedlib);;
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*) echo "Not an elf file" >&2 ; exit 1;;
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esac
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# Check for useful libs
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list_libs=""
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for lib in $(readelf -d $1 | awk '$2 == "(NEEDED)" { sub(/\[/,"",$NF); sub(/\]/,"",$NF); print $NF }'); do
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echo -n "checking if $lib is needed: "
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libpath=$(ldd $1 | awk -v lib=$lib '$1 == lib { print $3 }')
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list_libs="$list_libs $libpath"
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foundone=0
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for fct in $(nm -D $libpath | awk '$2 == "T" || $2 == "W" || $2 == "B" { print $3 }'); do
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nm -D $1 | awk -v s=$fct '$1 == "U" && $2 == s { found=1 ; exit } END { if (found != 1) { exit 1 } }' && foundone=1 && break
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done
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if [ $foundone -eq 1 ]; then
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echo "yes"
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else
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echo "no"
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fi
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done
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for sym in $(nm -D $1 | awk '$1 == "U" { print $2 }'); do
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found=0
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for l in ${list_libs} ; do
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nm -D $l | awk -v s=$sym '($2 == "T" || $2 == "W" || $2 == "B") && $3 == s { found=1 ; exit } END { if (found != 1) { exit 1 } }' && found=1 && break
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done
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if [ $found -eq 0 ]; then
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echo "Unresolved symbol $sym"
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fi
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done
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