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appimage: split checks between appimageSignature and appimageType

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This commit is contained in:
Bignaux Ronan 2020-03-04 05:40:19 +01:00
parent 04037d1e03
commit 92b36343a8
1 changed files with 20 additions and 11 deletions
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31
pkgs/build-support/appimage/default.nix
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@ -8,13 +8,23 @@ rec {
nativeBuildInputs = [ radare2 libarchive jq squashfsTools ];
buildCommand = ''
# https://github.com/AppImage/libappimage/blob/ca8d4b53bed5cbc0f3d0398e30806e0d3adeaaab/src/libappimage/utils/MagicBytesChecker.cpp#L45-L63
appimageType=$(r2 $src -nn -Nqc "p8 3 @ 8")
case "$appimageType" in
414901)
mkdir $out
bsdtar -x -C $out -f $src;;
eval $(r2 $src -nn -Nqc "p8j 3 @ 8" |
jq -r '{appimageSignature: (.[:-1]|implode), appimageType: .[-1]}|
@sh "appimageSignature=\(.appimageSignature) appimageType=\(.appimageType)"')
414902)
# check AppImage signature
if [[ $appimageSignature != "AI" ]]; then
echo "Not an appimage."
exit
fi
case "$appimageType" in
1)
mkdir $out
bsdtar -x -C $out -f $src
;;
2)
install $src ./appimage
# multiarch offset one-liner using same method as AppImage
@ -22,12 +32,11 @@ rec {
offset=$(r2 ./appimage -nn -Nqc "pfj.elf_header @ 0" |\
jq 'map({(.name): .value}) | add | .shoff + (.shnum * .shentsize)')
unsquashfs -o $offset ./appimage
unsquashfs -q -d $out -o $offset ./appimage
;;
cp -rv squashfs-root $out;;
# 414903) get prepared, https://github.com/TheAssassin/type3-runtime
*) echo "Unsupported AppImage Signature: $appimageType";;
# 3) get ready, https://github.com/TheAssassin/type3-runtime
*) echo "Unsupported AppImage Type: $appimageType";;
esac
'';
};