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Whenever we create scripts that are installed to $out, we must use runtimeShell in order to get the shell that can be executed on the machine we create the package for. This is relevant for cross-compiling. The only use case for stdenv.shell are scripts that are executed as part of the build system. Usages in checkPhase are borderline however to decrease the likelyhood of people copying the wrong examples, I decided to use runtimeShell as well.
77 lines
2.2 KiB
Nix
77 lines
2.2 KiB
Nix
{ stdenv, fetchurl, makeWrapper, dbus, libxml2, pam, pkgconfig, pmount, pythonPackages, writeScript, runtimeShell }:
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let
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# Search in the environment if the same program exists with a set uid or
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# set gid bit. If it exists, run the first program found, otherwise run
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# the default binary.
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useSetUID = drv: path:
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let
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name = baseNameOf path;
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bin = "${drv}${path}";
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in assert name != "";
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writeScript "setUID-${name}" ''
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#!${runtimeShell}
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inode=$(stat -Lc %i ${bin})
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for file in $(type -ap ${name}); do
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case $(stat -Lc %a $file) in
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([2-7][0-7][0-7][0-7])
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if test -r "$file".real; then
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orig=$(cat "$file".real)
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if test $inode = $(stat -Lc %i "$orig"); then
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exec "$file" "$@"
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fi
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fi;;
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esac
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done
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exec ${bin} "$@"
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'';
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pmountBin = useSetUID pmount "/bin/pmount";
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pumountBin = useSetUID pmount "/bin/pumount";
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inherit (pythonPackages) python dbus-python;
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in
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stdenv.mkDerivation rec {
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name = "pam_usb-0.5.0";
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src = fetchurl {
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url = "mirror://sourceforge/pamusb/${name}.tar.gz";
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sha256 = "1g1w0s9d8mfld8abrn405ll5grv3xgs0b0hsganrz6qafdq9j7q1";
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};
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buildInputs = [
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makeWrapper
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# pam_usb dependencies
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dbus libxml2 pam pmount pkgconfig
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# pam_usb's tools dependencies
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python
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# cElementTree is included with python 2.5 and later.
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];
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preBuild = ''
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makeFlagsArray=(DESTDIR=$out)
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substituteInPlace ./src/volume.c \
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--replace 'pmount' '${pmountBin}' \
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--replace 'pumount' '${pumountBin}'
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'';
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# pmount is append to the PATH because pmounts binaries should have a set uid bit.
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postInstall = ''
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mv $out/usr/* $out/. # fix color */
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rm -rf $out/usr
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for prog in $out/bin/pamusb-conf $out/bin/pamusb-agent; do
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substituteInPlace $prog --replace '/usr/bin/env python' '/bin/python'
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wrapProgram $prog \
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--prefix PYTHONPATH : "$(toPythonPath ${dbus-python})"
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done
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'';
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meta = {
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homepage = http://pamusb.org/;
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description = "Authentication using USB Flash Drives";
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license = stdenv.lib.licenses.gpl2;
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platforms = stdenv.lib.platforms.linux;
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};
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}
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