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#!/usr/bin/env bash
# librefetch
#
# Copyright (C) 2013-2017 Luke Shumaker <lukeshu@sbcglobal.net>
#
# For just the create_signature() function:
# Copyright (C) 2006-2013 Pacman Development Team <pacman-dev@archlinux.org>
# Copyright (C) 2002-2006 Judd Vinet <jvinet@zeroflux.org>
# Copyright (C) 2005 Aurelien Foret <orelien@chez.com>
# Copyright (C) 2006 Miklos Vajna <vmiklos@frugalware.org>
# Copyright (C) 2005 Christian Hamar <krics@linuxforum.hu>
# Copyright (C) 2006 Alex Smith <alex@alex-smith.me.uk>
# Copyright (C) 2006 Andras Voroskoi <voroskoi@frugalware.org>
#
# License: GNU GPLv3+
#
# This file is part of LibreFetch.
#
# LibreFetch is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# LibreFetch is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LibreFetch. If not, see <http://www.gnu.org/licenses/>.
# create_signature() is taken from pacman:makepkg, which is GPLv2+,
# so we take the '+' to combine it with our GPLv3+.
. "$(librelib conf)"
. "$(librelib messages)"
setup_traps
tmpfiles=()
tmpdirs=()
trap 'rm -f -- "${tmpfiles[@]}"; rm -rf -- "${tmpdirs[@]}"' EXIT
cmd=${0##*/}
usage() {
print "Usage: %s [OPTIONS] SOURCE_URL [OUTPUT_FILE]" "$cmd"
print "Usage: %s -[g|S|M|h]" "$cmd"
print "Downloads or creates a liberated source tarball."
echo
prose "The default mode is to create OUTPUT_FILE, first by trying
download mode, then create mode."
echo
prose "If OUTPUT_FILE isn't specified, it defaults to the non-directory
part of SOURCE_URL, in the current directory."
echo
prose "Unless '-C' is specified, if SOURCE_URL does not begin with a
configured mirror, create mode is inhibited."
echo
prose "In download mode, it simply tries to download SOURCE_URL. At the
beginning of a URL, 'libre://' expands to the first configured
mirror."
echo
prose "In create mode, it either looks at a build script and uses that
to create the source tarball, or it uses GPG to create a
signature (if OUTPUT_FILE ends with \`.sig\` or \`.sig.part\`).
If it is using GPG to create a signature, but the file that it is
trying to sign doesn't exist yet, it recurses on itself to first
create that file. SOURCE_URL is ignored, except that it is used
to set the default value of OUTPUT_FILE, and that it may be used
when recursing."
echo
prose "The default build script is 'PKGBUILD', or 'SRCBUILD' if it
exists."
echo
prose "Other options, if they are valid \`makepkg\` options, are passed
straight to makepkg."
echo
print "Example usage:"
print ' $ %s https://repo.parabola.nu/other/mypackage/mypackage-1.0.tar.gz' "$cmd"
echo
print "Options:"
flag 'Settings:' \
"-C" "Force create mode (don't download)" \
"-D" "Force download mode (don't create)" \
"-p <$(_ FILE)>" "Use an alternate build script (instead of
'PKGBUILD'). If an SRCBUILD exists in the same
directory, it is used instead" \
'Alternate modes:' \
"-g, --geninteg" "Generate integrity checks for source files" \
"-S, --srcbuild" "Print the effective build script (SRCBUILD)" \
"-M, --makepkg" "Generate and print the location of the
effective makepkg script" \
"-h, --help" "Show this message"
}
main() {
BUILDFILE="$(realpath -Lm PKGBUILD)"
makepkg_opts=()
extra_opts=()
mode=download-create
if ! parse_options "$@"; then
usage >&2
exit $EXIT_INVALIDARGUMENT
fi
doit
}
doit() {
# Mode: help ###########################################################
if [[ $mode =~ help ]]; then
usage
exit $EXIT_SUCCESS
fi
########################################################################
makepkg="$(modified_makepkg)"
# Mode: makepkg ########################################################
if [[ $mode =~ makepkg ]]; then
printf '%s\n' "$makepkg"
exit $EXIT_SUCCESS
else
tmpdirs+=("${makepkg%/*}")
fi
########################################################################
local BUILDFILEDIR="${BUILDFILE%/*}"
if [[ -f "${BUILDFILEDIR}/SRCBUILD" ]]; then
BUILDFILE="${BUILDFILEDIR}/SRCBUILD"
fi
if [[ ! -f "$BUILDFILE" ]]; then
error "%s does not exist." "$BUILDFILE"
exit $EXIT_FAILURE
fi
case "$BUILDFILE" in
*/SRCBUILD) srcbuild="$(modified_srcbuild "$BUILDFILE")";;
*) srcbuild="$(modified_pkgbuild "$BUILDFILE")";;
esac
tmpfiles+=("$srcbuild")
# Mode: checksums ######################################################
if [[ $mode =~ checksums ]]; then
"$makepkg" "${makepkg_opts[@]}" -g -p "$srcbuild" |
case ${BUILDFILE##*/} in
PKGBUILD) sed -e 's/^[a-z]/mk&/' -e 's/^\s/ &/';;
SRCBUILD) cat;;
esac
exit $EXIT_SUCCESS
fi
# Mode: srcbuild #######################################################
if [[ $mode =~ srcbuild ]]; then
cat "$srcbuild"
exit $EXIT_SUCCESS
fi
########################################################################
local src="${extra_opts[0]}"
local dst="${extra_opts[1]:-${src##*/}}"
# Don't canonicalize $src unless mode =~ download, and we've validated
# that $MIRRORS is configured.
# Canonicalize $dst
dst="$(realpath -Lm -- "$dst")"
# Mode: download #######################################################
if [[ $mode =~ download ]]; then
load_conf librefetch.conf MIRRORS DOWNLOADER || exit
# Canonicalize $src
if [[ "$src" == libre://* ]]; then
src="${MIRRORS[0]}/${src#libre://}"
fi
# check to see if $src is a candidate for create mode
local inmirror=false;
local mirror
for mirror in "${MIRRORS[@]}"; do
if [[ "$src" == "$mirror"* ]]; then
inmirror=true
break
fi
done
if ! $inmirror; then
# inhibit create
mode=download
fi
local dlcmd="${DOWNLOADER}"
[[ $dlcmd = *%u* ]] || dlcmd="$dlcmd %u"
dlcmd="${dlcmd//\%o/\"\$dst\"}"
dlcmd="${dlcmd//\%u/\"\$src\"}"
if { eval "$dlcmd"; } >&2; then
exit $EXIT_SUCCESS
else
exit $EXIT_FAILURE
fi
fi
# Mode: create #########################################################
if [[ $mode =~ create ]]; then
local base_dst=${dst%.part}
local suffix=${dst#"$base_dst"}
if [[ $base_dst == *.sig ]]; then
if ! [[ -e ${base_dst%.sig} ]]; then
extra_opts=("${src%.sig}" "${base_dst%.sig}")
doit || exit
fi
create_signature "${base_dst%.sig}" || exit
if [[ -n $suffix ]]; then
mv -f "$base_dst" "$dst"
fi
else
export PKGEXT=${base_dst##*/}
export PKGDEST=${dst%/*}
export pkg_file=$dst
cd "$BUILDFILEDIR"
"$makepkg" "${makepkg_opts[@]}" -p "$srcbuild" >&2 || exit
fi
fi
}
# sets the variables BUILDFILE, makepkg_opts, extra_opts, mode
parse_options() {
declare -i ret=$EXIT_SUCCESS
local {shrt,long}{1,2}
# makepkg options
local makepkg_orig
makepkg_orig="$(which makepkg)"
shrt1=($(LC_ALL=C "${makepkg_orig}" -h | sed -rn 's/^ +-(.)(,| [^<]).*/\1/p'))
shrt2=($(LC_ALL=C "${makepkg_orig}" -h | sed -rn 's/^ +-(.) <.*/\1/p'))
long1=($(LC_ALL=C "${makepkg_orig}" -h | sed -rn -e 's/^ +(-., )?--(\S*) [^<].*/\2/p'))
long2=($(LC_ALL=C "${makepkg_orig}" -h | sed -rn 's/^ +--(\S*) <.*/\1/p'))
# librefetch options
shrt1+=(C D g S M h)
shrt2+=(p)
long1+=(geninteg srcbuild makepkg help)
long2+=()
# Feed the options through getopt (sanitize them)
local shrt long args
shrt="$({ printf '%s\0' "${shrt1[@]}"; printf '%s:\0' "${shrt2[@]}"; } | sort -zu | xargs -0 printf '%s')"
long="$({ printf '%s\0' "${long1[@]}"; printf '%s:\0' "${long2[@]}"; } | sort -zu | xargs -0 printf '%s,')"
args="$(getopt -n "$cmd" -o "$shrt" -l "${long%,}" -- "$@")" || ret=$EXIT_INVALIDARGUMENT
eval "set -- $args"
unset shrt long args
# Parse the options.
local opt optarg have_optarg
while [[ $# -gt 0 ]]; do
opt=$1; shift
have_optarg=false
if { [[ $opt == --?* ]] && in_array "${opt#--}" "${long2[@]}"; } \
|| { [[ $opt == -? ]] && in_array "${opt#-}" "${shrt2[@]}"; }
then
optarg=$1; shift
have_optarg=true
fi
case "$opt" in
-C) mode=create;;
-D) mode=download;;
-g|--geninteg) mode=checksums;;
-S|--srcbuild) mode=srcbuild;;
-M|--makepkg) mode=makepkg;;
-p) BUILDFILE="$(realpath -Lm -- "$optarg")";;
-h|--help) mode=help;;
--) break;;
*)
makepkg_opts+=("$opt")
if $have_optarg; then makepkg_opts+=("$optarg"); fi
;;
esac
done
extra_opts+=("$@")
# check the number of extra_opts
case "$mode" in
help) # don't worry about it
:;;
checksums|srcbuild|makepkg) # don't take any extra arguments
if [[ ${#extra_opts[@]} != 0 ]]; then
print "%s: found extra non-flag arguments: %s" "$cmd" "${extra_opts[*]}" >&2
ret=$EXIT_INVALIDARGUMENT
fi
;;
*download*|*create*) # take 1 or 2 extra arguments
if [[ ${#extra_opts[@]} != 1 ]] && [[ ${#extra_opts[@]} != 2 ]]; then
print "%s: %d non-flag arguments found, expected 1 or 2: %s" "$cmd" ${#extra_opts[@]} >&2
ret=$EXIT_INVALIDARGUMENT
fi
;;
esac
return $ret
}
# Modify makepkg ###############################################################
modified_makepkg() {
local dir
dir="$(mktemp --tmpdir --directory "${cmd}.XXXXXXXXXXX.makepkg")"
make -s -f "$(librelib librefetchdir/Makefile)" new="$dir"
realpath -es "$dir/makepkg"
}
# Modify PKGBUILD ##############################################################
# a string to be appended
pkgbuild_append='
# do not do split packages
if [[ ${#pkgname[@]} -gt 1 ]]; then
if [[ -n $pkgbase ]]; then
pkgname=("$pkgbase")
else
pkgname=("$pkgname")
fi
fi
# copy source variables
source=("${mksource[@]}") ; unset "source_${CARCH}"
noextract=("${mknoextract[@]}")
declare algo
for algo in "${known_hash_algos[@]}"; do
eval "${algo}sums=(\"\${mk${algo}sums[@]}\")"
unset "${algo}sums_${CARCH}"
done
depends=() ; unset "depends_${CARCH}"
checkdepends=() ; unset "checkdepends_${CARCH}"
makedepends=("${mkdepends[@]}") ; unset "makedepends_${CARCH}"
####
options=(!strip docs libtool staticlibs emptydirs !zipman purge !upx !optipng !debug)
PURGE_TARGETS=(.bzr/ .cvs/ .git/ .hg/ .svn/ .makepkg/)
####
if ! declare -f mksource >/dev/null; then
mksource() { :; }
fi
prepare() { :; }
build() { mksource; }
check() { :; }
package() { cp -a "$srcdir"/*/ "$pkgdir/"; }
'
modified_pkgbuild() {
local pkgbuild=$1
local srcbuild
srcbuild="$(mktemp "${pkgbuild%/*}/${cmd}.XXXXXXXXXXX.PKGBUILD.to.SRCBUILD")"
printf '%s' "$pkgbuild_append" | cat "$pkgbuild" - > "$srcbuild"
printf '%s\n' "$srcbuild"
}
# Modify SRCBUILD ##############################################################
modified_srcbuild() {
local orig=$1
local new
new="$(mktemp "${orig%/*}/${cmd}.XXXXXXXXXXX.SRCBUILD.to.SRCBUILD")"
sed -e '/PKGDEST=/d' -e '/PKGEXT=/d' < "$orig" > "$new"
printf '%s\n' "$new"
}
################################################################################
# This function is taken almost verbatim from makepkg
create_signature() {
local ret=$EXIT_SUCCESS
local filename="$1"
msg "Signing package..."
local SIGNWITHKEY=()
if [[ -n $GPGKEY ]]; then
SIGNWITHKEY=(-u "${GPGKEY}")
fi
gpg --detach-sign --use-agent "${SIGNWITHKEY[@]}" --no-armor "$filename" &>/dev/null || ret=$EXIT_FAILURE
if (( ! ret )); then
msg2 "Created signature file %s." "$filename.sig"
else
error "Failed to sign package file."
return $ret
fi
}
main "$@"
|