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95e3fc8f8e
kiss/kiss
Dylan Araps 95e3fc8f8e
misc: nit
2021-07-03 14:34:13 +00:00

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#!/bin/sh
# shellcheck source=/dev/null
#
# This is a simple package manager written in POSIX shell for use
# in KISS Linux (https://kisslinux.xyz).
#
# Created by Dylan Araps.
log() {
printf '%b%s %b%s%b %s\n' \
"$lcol" "${3:-->}" "${lclr}${2:+$lcol2}" "$1" "$lclr" "$2" >&2
}
war() {
log "$1" "$2" "${3:-WARNING}"
}
die() {
log "$1" "$2" "${3:-ERROR}"
exit 1
}
contains() {
# Check if a "string list" contains a word.
case " $1 " in *" $2 "*) return 0; esac; return 1
}
prompt() {
[ "$1" ] && log "$1"
log "Continue?: Press Enter to continue or Ctrl+C to abort"
# korn-shell does not exit on interrupt of read.
[ "$KISS_PROMPT" = 0 ] || read -r _ || exit 1
}
as_root() {
case $uid/${user:=root}/${cmd_su##*/} in
0/root/*)
"$@"
;;
*/doas|*/sudo|*/ssu)
log "Using '$cmd_su' (to become $user)"
"$cmd_su" -u "$user" -- "$@"
;;
*/su)
log "Using 'su' (to become $user)"
printf 'Note: su will ask for password every time.\n%s\n' \
' Use doas, sudo or ssu for more control.'
"$cmd_su" -c "$* <&3" "$user" 3<&0 </dev/tty
;;
*)
die "Invalid KISS_SU value: '$cmd_su' (valid: doas, sudo, ssu, su)"
;;
esac
unset user
}
file_owner() {
# shellcheck disable=2046
set -- $(ls -ld "$1")
user=${3:-root}
id -u "$user" >/dev/null 2>&1 || user=root
}
pkg_owner() {
set +f
[ "$3" ] || set -- "$1" "$2" "$sys_db"/*/manifest
pkg_owner=$(grep "$@")
pkg_owner=${pkg_owner%/*}
pkg_owner=${pkg_owner##*/}
set -f
[ "$pkg_owner" ]
}
run_hook() {
# Provide a default post-build hook to remove files and directories
# for things we don't support out of the box. One can simply define
# their own hook to override this behavior.
case ${KISS_HOOK:--}$1 in
-post-build)
rm -rf "$3/usr/share/gettext" \
"$3/usr/share/polkit-1" \
"$3/usr/share/locale" \
"$3/usr/share/info"
;;
[!-]*)
TYPE=${1:-null} PKG=${2:-null} DEST=${3:-null} . "$KISS_HOOK"
;;
esac
}
decompress() {
case $1 in
*.bz2) bzip2 -d ;;
*.lzma) lzma -dc ;;
*.lz) lzip -dc ;;
*.tar) cat ;;
*.tgz|*.gz) gzip -d ;;
*.xz|*.txz) xz -dcT0 ;;
*.zst) zstd -dc ;;
esac < "$1"
}
sh256() {
# There's no standard utility to generate sha256 checksums.
# This is a simple wrapper around sha256sum, sha256, shasum,
# openssl, digest, ... which will use whatever is available.
#
# All utilities must match 'sha256sum' output.
#
# Example: '<checksum> <file>'
if [ ! -d "$1" ] && [ -e "$1" ]; then
hash=$(
sha256sum "$1" ||
sha256 -r "$1" ||
openssl dgst -sha256 -r "$1" ||
shasum -a 256 "$1" ||
digest -a sha256 "$1"
) 2>/dev/null
printf '%s\n' "${hash%% *}"
fi
}
pkg_lint() {
log "$1" "Checking repository files"
pkg_find "$1"
cd "$repo_dir"
read -r _ release 2>/dev/null < version ||
die "Version file not found"
[ "$release" ] ||
die "$1" "Release field not found in version file"
[ -x build ] ||
die "$1" "Build file not found or not executable"
[ -f sources ] ||
war "$1" "Sources file not found"
}
pkg_find() {
# Figure out which repository a package belongs to by searching for
# directories matching the package name in $KISS_PATH/*.
query=$1 all=$2 what=$3 where=$4 IFS=:; set --
# Both counts of word-splitting are intentional here. Firstly to split
# the repositories and secondly to allow for the query to be a glob.
# shellcheck disable=2086
for path in ${where:-$KISS_PATH} "${what:-$sys_db}"; do set +f
for path2 in "$path/"$query; do
test "${what:--d}" "$path2" && set -f -- "$@" "$path2"
done
done
unset IFS
# A package may also not be found due to a repository not being readable
# by the current user. Either way, we need to die here.
[ "$1" ] || die "Package '$query' not in any repository"
# Show all search results if called from 'kiss search', else store the
# value in a variable.
[ "$all" ] && printf '%s\n' "$@" || repo_dir=$1
}
pkg_list() {
# List installed packages. As the format is files and directories, this
# just involves a simple for loop and file read.
cd "$sys_db"
# Optional arguments can be passed to check for specific packages. If no
# arguments are passed, list all.
[ "$1" ] || { set +f; set -f -- *; }
# Loop over each package and print its name and version.
for pkg do
[ -d "$pkg" ] || {
log "$pkg" "not installed"
return 1
}
read -r version 2>/dev/null < "$pkg/version" || version=null
printf '%s\n' "$pkg $version"
done
}
pkg_cache() {
# Find the tarball of a package using a glob. Use the first found match
# of '<pkg_name>[#@]<pkg_version><pkg_release>.tar.*'.
pkg_find "$1"
read -r version release 2>/dev/null < "$repo_dir/version" ||
die "$1" "Failed to read version"
set +f
set -f -- "$bin_dir/$1"[#@]"$version-$release.tar."*
[ -f "$2" ] && shift
tar_file=$1
[ -f "$1" ]
}
pkg_sources() {
# Download any remote package sources. The existence of local files is
# also checked.
pkg_find "$1"
# Support packages without sources. Simply do nothing.
[ -f "$repo_dir/sources" ] || return 0
log "$1" "Downloading sources"
mkdir -p "$src_dir/$1" && cd "$src_dir/$1"
while read -r src dest || [ "$src" ]; do
if [ -z "${src##\#*}" ] || [ -z "${src##git+*}" ]; then
# Remote git repository or comment.
:
elif [ -f "./${dest:-.}/${src##*/}" ]; then
log "$1" "Found cached remote source '${src##*/}'"
elif [ -z "${src##*://*}" ]; then
log "$1" "Downloading $src"
mkdir -p "$PWD/$dest"
curl "$src" -fLo "./${dest:-.}/${src##*/}" || {
rm -f "./${dest:-.}/${src##*/}"
die "$1" "Failed to download $src"
}
elif [ -e "$repo_dir/$src" ]; then
log "$1" "Found local relative source '$src'"
elif [ -e "/$src" ]; then
log "$1" "Found local absolute source '$src'"
else
die "$1" "No local file '$src'"
fi
done < "$repo_dir/sources"
}
pkg_extract() {
# Extract all source archives to the build directory and copy over any
# local repository files.
pkg_find "$1"
# Support packages without sources. Simply do nothing.
[ -f "$repo_dir/sources" ] || return 0
log "$1" "Extracting sources"
while read -r src dest || [ "$src" ]; do
mkdir -p "$mak_dir/$1/$dest" && cd "$mak_dir/$1/$dest"
case $src in \#*|'') ;;
git+*)
# Split the source into URL + OBJECT (branch or commit).
url=${src##git+} com=${url##*[@#]} com=${com#${url%[#@]*}}
# This magic will shallow clone branches, commits or the
# regular repository. It correctly handles cases where a
# shallow clone is not possible.
log "$1" "Cloning ${url%[#@]*}"; {
git init
git remote add origin "${url%[#@]*}"
git fetch -t --filter=tree:0 origin "$com" || git fetch -t
git -c advice.detachedHead=0 checkout "${com:-FETCH_HEAD}"
} || die "$1" "Failed to clone $src"
;;
*://*.tar|*://*.tar.??|*://*.tar.???|*://*.tar.????|*://*.t?z)
# This is a portable shell implementation of GNU tar's
# '--strip-components 1'.
decompress "$src_dir/$1/${dest:-.}/${src##*/}" > .ktar
# Extract the tar archive to the current directory.
tar xf .ktar || die "$1" "Couldn't extract ${src##*/}"
# Iterate over all directories in the first level of the
# tarball's manifest.
tar tf .ktar | while IFS=/ read -r dir _; do
# Some tarballs contain './' as the top-level directory,
# we need to skip these occurances.
[ -d "${dir#.}" ] || continue
# Move the directory to prevent naming conflicts between
# the child and parent.
mv -f "$dir" "$pid-$dir"
# First attempt to move all files up a directory level,
# if any files/directories fail (due to mv's lack of
# directory merge capability), simply do the exercise
# again and copy-merge the remaining files/directories.
#
# We can't use '-exec {} +' with any arguments between
# the '{}' and '+' as this is not POSIX. We must also
# use '$0' and '$@' to reference all arguments.
#
# Using only '$@' causes a single file from each
# invocation to be left out of the list. Weird, right?
{
find "$pid-$dir/." ! -name . -prune \
-exec sh -c 'mv -f "$0" "$@" .' {} + 2>/dev/null ||
find "$pid-$dir/." ! -name . -prune \
-exec sh -c 'cp -fRp "$0" "$@" .' {} +
}
# Remove the directory now that all files have been
# transferred out of it. This can't be a simple 'rmdir'
# as we may leave files in here due to above.
rm -rf "$pid-$dir"
done
# Clean up after ourselves and remove the temporary tar
# archive we've created. Not needed at all really.
rm -f .ktar
;;
*://*.zip)
unzip "$src_dir/$1/${dest:-.}/${src##*/}" ||
die "$1" "Couldn't extract ${src##*/}"
;;
*)
# Local directory (relative).
if [ -d "$repo_dir/$src" ]; then
cp -Rf "$repo_dir/$src/." .
# Local directory (absolute).
elif [ -d "/$src" ]; then
cp -Rf "/$src/." .
# Local file (relative).
elif [ -f "$repo_dir/$src" ]; then
cp -f "$repo_dir/$src" .
# Local file (absolute).
elif [ -f "/$src" ]; then
cp -f "/$src" .
# Remote file.
elif [ -f "$src_dir/$1/${dest:-.}/${src##*/}" ]; then
cp -f "$src_dir/$1/${dest:-.}/${src##*/}" .
else
die "$1" "Local file $src not found"
fi
;;
esac
done < "$repo_dir/sources"
}
pkg_depends() {
# Resolve all dependencies and generate an ordered list. The deepest
# dependencies are listed first and then the parents in reverse order.
contains "$deps" "$1" || {
# Filter out non-explicit, aleady installed dependencies.
[ "$3" ] && [ -z "$2" ] && (pkg_list "$1" >/dev/null 2>&1) && return
# Detect circular dependencies and bail out.
# Looks for multiple repeating patterns of (dep dep_parent) (5 is max).
case " $4 " in
*" ${4##* } "*" $1 "\
*" ${4##* } "*" $1 "\
*" ${4##* } "*" $1 "\
*" ${4##* } "*" $1 "\
*" ${4##* } "*" $1 "\
*)
die "Circular dependency detected $1 <> ${4##* }"
esac
# Skip traversing over depends files of make dependencies which exist
# in the binary cache.
if [ "$5" != "make" ] || { [ "$5" = "make" ] && ! pkg_cache "$1"; }; then
pkg_find "$1"
! [ -e "$repo_dir/depends" ] ||
# Recurse through the dependencies of the child packages.
while read -r dep dep_type || [ "$dep" ]; do
[ "${dep##\#*}" ] || continue
pkg_depends "$dep" '' "$3" "$4 $1" "$dep_type"
done < "$repo_dir/depends" ||:
fi
# After child dependencies are added to the list,
# add the package which depends on them.
[ "$2" = explicit ] || deps="$deps $1"
}
}
pkg_order() {
# Order a list of packages based on dependence and take into account
# pre-built tarballs if this is to be called from 'kiss i'.
unset order redro deps
for pkg do case $pkg in
/*.tar.*) deps="$deps $pkg" ;;
*.tar.*) deps="$deps $ppwd/$pkg" ;;
*) pkg_depends "$pkg" raw
esac done
# Filter the list, only keeping explicit packages. The purpose of these
# two loops is to order the argument list based on dependence.
for pkg in $deps; do case " $* " in *" $pkg "* | *" ${pkg##"$ppwd/"} "*)
order="$order $pkg"
redro="$pkg $redro"
esac done
unset deps
}
pkg_strip() {
# Strip package binaries and libraries. This saves space on the system as
# well as on the tarballs we ship for installation.
[ -f "$mak_dir/$pkg/nostrip" ] || [ "$KISS_STRIP" = 0 ] && return
log "$1" "Stripping binaries and libraries"
# Strip only files matching the below ELF types. This uses 'od' to print
# the first 18 bytes of the file. This is the location of the ELF header
# (up to the ELF type) and contains the type information we need.
#
# Static libraries (.a) are in reality AR archives which contain ELF
# objects. We simply read from the same 18 bytes and assume that the AR
# header equates to an archive containing objects (.o).
#
# Example ELF output ('003' is ELF type):
# 0000000 177 E L F 002 001 001 \0 \0 \0 \0 \0 \0 \0 \0 \0
# 0000020 003 \0
# 0000022
#
# Example AR output (.a):
# 0000000 ! < a r c h > \n /
# 0000020
# 0000022
find "$pkg_dir/$1" -type f | while read -r file; do
case $(od -A o -t c -N 18 "$file") in
# REL (object files (.o), static libraries (.a)).
*177*E*L*F*0000020\ 001\ *|*\!*\<*a*r*c*h*\>*)
strip -g -R .comment -R .note "$file"
;;
# EXEC (binaries), DYN (shared libraries).
# Shared libraries keep global symbols in a separate ELF section
# called '.dynsym'. '--strip-all/-s' does not touch the dynamic
# symbol entries which makes this safe to do.
*177*E*L*F*0000020\ 00[23]\ *)
strip -s -R .comment -R .note "$file"
;;
esac
done 2>/dev/null ||:
}
pkg_fix_deps() {
# Dynamically look for missing runtime dependencies by checking each
# binary and library with 'ldd'. This catches any extra libraries and or
# dependencies pulled in by the package's build suite.
log "$1" "looking for dependencies (using ${cmd_elf##*/})"
cd "$pkg_dir/$1/$pkg_db/$1"
set +f
set -f -- "$sys_db/"*/manifest
: >> depends
find "$pkg_dir/${PWD##*/}/" -type f 2>/dev/null |
while read -r file; do
ldd_buf=$(ldd -- "$file" 2>/dev/null) ||:
case $cmd_elf in
*readelf)
"$cmd_elf" -d "$file"
;;
*)
printf '%s\n' "$ldd_buf"
;;
esac 2>/dev/null |
while read -r line; do
case $line in
*NEEDED*\[*\] | *'=>'*)
# readelf: 0x0000 (NEEDED) Shared library: [libjson-c.so.5]
line=${line##*\[}
line=${line%%\]*}
# Resolve library path.
# ldd: libjson-c.so.5 => /lib/libjson-c.so.5 ...
case $cmd_elf in
*readelf) line=${ldd_buf#*" $line => "} ;;
*) line=${line##*=> } ;;
esac
line=${line%% *}
# Skip files owned by libc and POSIX.
case ${line##*/} in
ld-* |\
lib[cm].so* |\
libdl.so* |\
libpthread.so* |\
librt.so* |\
libtrace.so* |\
libxnet.so* |\
ldd)
continue
;;
*)
# Skip file if owned by current package
pkg_owner -l "/${line#/}\$" "$PWD/manifest" &&
continue
pkg_owner -l "/${line#/}\$" "$@" &&
printf '%s\n' "$pkg_owner"
;;
esac
;;
esac
done ||:
done |
sort -uk1,1 depends - > "$tmp_dir/.fixdeps"
diff -U 3 depends - < "$tmp_dir/.fixdeps" ||:
mv -f "$tmp_dir/.fixdeps" depends
if [ -s depends ]; then
pkg_manifest "${PWD##*/}"
else
rm -f depends
fi
}
pkg_manifest() (
# Generate the package's manifest file. This is a list of each file
# and directory inside the package. The file is used when uninstalling
# packages, checking for package conflicts and for general debugging.
log "$1" "Generating manifest"
# This function runs as a sub-shell to avoid having to 'cd' back to the
# prior directory before being able to continue.
cd "${2:-$pkg_dir}/$1"
# find: Print all files and directories and append '/' to directories.
{
find . -type d -exec printf '%s/\n' {} +
find . ! -type d -print
} |
# sort: Sort the output in *reverse*. Directories appear *after* their
# contents.
# sed: Remove the first character in each line (./dir -> /dir) and
# remove all lines which only contain '.'.
sort -r | sed '/^\.\/$/d;ss.ss' > "$PWD/$pkg_db/$1/manifest"
)
pkg_etcsums() (
# Generate checksums for each configuration file in the package's /etc/
# directory for use in "smart" handling of these files.
log "$1" "Generating etcsums"
# This function runs as a sub-shell to avoid having to 'cd' back to the
# prior directory before being able to continue.
[ -d "$pkg_dir/$1/etc" ] || return 0
cd "$pkg_dir/$1"
# This can't be a simple 'find -exec' as 'sh256' is a shell function
# and not a real command of any kind. This is the shell equivalent.
find etc ! -type d | sort | while read -r line; do
sh256 "$line"
done > "$pkg_dir/$1/$pkg_db/$1/etcsums"
)
pkg_tar() (
# Create a tarball from the built package's files. This tarball also
# contains the package's database entry.
log "$1" "Creating tarball"
pkg_find "$1"
# Read the version information to name the package.
read -r version release < "$repo_dir/version" ||
die "$1" "Failed to read version"
# Use 'cd' to avoid needing tar's '-C' flag which may not be portable
# across implementations.
cd "$pkg_dir/$1"
# Create a tarball from the contents of the built package.
tar cf - . | case ${KISS_COMPRESS:=gz} in
bz2) bzip2 -z ;;
gz) gzip -6 ;;
lzma) lzma -z ;;
lz) lzip -z ;;
xz) xz -zT0 ;;
zst) zstd -z ;;
esac > "$bin_dir/$1@$version-$release.tar.${KISS_COMPRESS:=gz}"
log "$1" "Successfully created tarball"
run_hook post-package "$1"
)
pkg_build() {
# Build packages and turn them into packaged tarballs.
# Order the argument list and filter out duplicates.
pkg_order "$@"
# See [1] at top of script.
# shellcheck disable=2046,2086
set -- $order
log "Resolving dependencies"
# Mark packages passed on the command-line separately from those
# detected as dependencies. We need to treat explicitly passed packages
# differently from those pulled in as dependencies.
#
# This also resolves all dependencies and stores the result in '$deps'.
for pkg do
pkg_depends "$pkg" explicit filter
explicit="$explicit $pkg "
done
# If this is an update, don't always build explicitly passsed packages
# and instead install pre-built binaries if they exist.
[ "$pkg_update" ] || explicit_build=$explicit
set --
# If an explicit package is a dependency of another explicit package,
# remove it from the explicit list as it needs to be installed as a
# dependency.
for pkg in $explicit; do
contains "$deps" "$pkg" || set -- "$@" "$pkg"
done
explicit_cnt=$#
log "Building: explicit: $*${deps:+, implicit: ${deps## }}"
# See [1] at top of script.
# shellcheck disable=2046,2086
set -- $deps "$@"
# Ask for confirmation if extra packages need to be built.
[ "$#" -ne "$explicit_cnt" ] || [ "$pkg_update" ] && prompt
for pkg do pkg_lint "$pkg"; done
log "Checking for pre-built dependencies"
# Install any pre-built dependencies if they exist in the binary
# directory and are up to date.
for pkg in "$@"; do
if ! contains "$explicit_build" "$pkg" && pkg_cache "$pkg"; then
log "$pkg" "Found pre-built binary, installing"
(KISS_FORCE=1 args i "$tar_file")
else
set -- "$@" "$pkg"
fi
shift
done
for pkg do pkg_sources "$pkg"; done
pkg_verify "$@"
# Finally build and create tarballs for all passed packages and
# dependencies.
for pkg do
log "$pkg" "Building package ($((in+=1))/$#)"
run_hook pre-extract "$pkg" "$pkg_dir/$pkg"
pkg_extract "$pkg"
pkg_find "$pkg"
# Install built packages to a directory under the package name to
# avoid collisions with other packages.
mkdir -p "$pkg_dir/$pkg/$pkg_db" "$mak_dir/$pkg"
cd "$mak_dir/$pkg"
# Log the version so we can pass it to the package build file.
read -r build_version _ < "$repo_dir/version" ||
die "$pkg" "Failed to read version"
log "$pkg" "Starting build"
run_hook pre-build "$pkg" "$pkg_dir/$pkg"
# Call the build script, log the output to the terminal and to a file.
# There's no PIPEFAIL in POSIX shelll so we must resort to tricks like
# killing the script ourselves.
{ "$repo_dir/build" "$pkg_dir/$pkg" "$build_version" 2>&1 || {
log "$pkg" "Build failed"
log "$pkg" "Log stored to $log_dir/$pkg-$time-$pid"
run_hook build-fail "$pkg" "$pkg_dir/$pkg"
pkg_clean
kill 0
} } | tee "$log_dir/$pkg-$time-$pid"
# Delete the log file if the build succeeded to prevent the directory
# from filling very quickly with useless logs.
[ "$KISS_KEEPLOG" = 1 ] || rm -f "$log_dir/$pkg-$time-$pid"
# Copy the repository files to the package directory. This acts as the
# database entry.
cp -LRf "$repo_dir" "$pkg_dir/$pkg/$pkg_db/"
log "$pkg" "Successfully built package"
run_hook post-build "$pkg" "$pkg_dir/$pkg"
# Remove all .la files from the packages. They're unneeded and cause
# issues when a package stops providing one. This recently caused an
# issue with harfbuzz (See: 05096e5a4dc6db5d202342f538d067d87ae7135e).
find "$pkg_dir/$pkg/usr/lib" -name \*.la -exec rm -f {} + 2>/dev/null ||:
# Remove this unneeded file from all packages as it is an endless
# source of conflicts. This is used with info pages we we do not support.
rm -f "$pkg_dir/$pkg/usr/lib/charset.alias"
# Create the manifest file early and make it empty. This ensures that
# the manifest is added to the manifest.
: > "$pkg_dir/$pkg/$pkg_db/$pkg/manifest"
# If the package contains '/etc', add a file called 'etcsums' to the
# manifest. See comment directly above.
[ -d "$pkg_dir/$pkg/etc" ] && : > "$pkg_dir/$pkg/$pkg_db/$pkg/etcsums"
pkg_strip "$pkg"
pkg_manifest "$pkg"
pkg_fix_deps "$pkg"
pkg_etcsums "$pkg"
pkg_tar "$pkg"
if [ "$pkg_update" ] || ! contains "$explicit" "$pkg"; then
log "$pkg" "Needed as a dependency or has an update, installing"
(KISS_FORCE=1 args i "$pkg")
fi
done
# Turn the explicit packages into a 'list'. See [1] at top of script.
# shellcheck disable=2046,2086
set -- $explicit
[ "$pkg_update" ] || prompt "Install built packages? [$*]" && args i "$@"
}
pkg_checksums() {
# Generate checksums for packages.
pkg_find "$1"
while read -r src dest || [ "$src" ]; do
# Skip directories, comments, blank lines and git sources.
if [ -z "${src##\#*}" ] || [ -z "${src##git+*}" ] ||
[ -d "$repo_dir/$src" ] || [ -d "/$src" ]; then
:
# Remote source.
elif [ -z "${src##*://*}" ]; then
sh256 "$src_dir/$1/${dest:-.}/${src##*/}"
# Local file (relative).
elif [ -f "$repo_dir/$src" ]; then
sh256 "$repo_dir/$src"
# Local file (absolute).
elif [ -f "/$src" ]; then
sh256 "/$src"
fi
done < "$repo_dir/sources" || die "$1" "Failed to generate checksums"
}
pkg_verify() {
# Verify all package checksums. This is achieved by generating a new set
# of checksums and then comparing those with the old set.
verify_cmd="NR==FNR{a[\$1];next}/^SKIP$/{next}!((\$1)in a){exit 1}"
for pkg do
pkg_find "$pkg"
[ -f "$repo_dir/sources" ] || continue
verify_sum=$(pkg_checksums "$pkg")
[ "$verify_sum" ] || continue
[ -f "$repo_dir/checksums" ] || die "$pkg" "checksums file missing"
# Check that the first column (separated by whitespace) match in both
# checksum files. If any part of either file differs, mismatch. Abort.
printf '%s\n' "$verify_sum" |
awk "$verify_cmd" - "$repo_dir/checksums" || {
log "$pkg" "Checksum mismatch"
# Instead of dying above, log it to the terminal. Also define a
# variable so we *can* die after all checksum files have been
# checked.
mismatch="$mismatch$pkg "
}
done
[ -z "$mismatch" ] || die "Checksum mismatch with: ${mismatch% }"
log "Verified all checksums"
}
pkg_conflicts() {
# Check to see if a package conflicts with another.
log "$1" "Checking for package conflicts"
# Filter the tarball's manifest and select only files. Resolve all
# symlinks in file paths as well.
while read -r file; do
file=$KISS_ROOT/${file#/}
# Skip all directories.
case $file in */) continue; esac
# Attempt to resolve symlinks by using 'cd'.
# If this fails, fallback to the file's parent
# directory.
cd -P "${file%/*}" 2>/dev/null || PWD=${file%/*}
# Print the file with all symlinks in its path
# resolved to their real locations.
printf '%s\n' "${PWD#"$KISS_ROOT"}/${file##*/}"
done < "$tar_dir/$1/$pkg_db/$1/manifest" > "$mak_dir/cf_m"
p_name=$1
set +f
set -f "$sys_db"/*/manifest
# Generate a list of all installed package manifests and remove the
# current package from the list. This is the simplest method of
# dropping an item from the argument list. The one downside is that
# it cannot live in a function due to scoping of arguments.
for manifest do
shift
[ "$sys_db/$p_name/manifest" = "$manifest" ] && continue
set -- "$@" "$manifest"
done
# Return here if there is nothing to check conflicts against.
[ "$#" != 0 ] || return 0
# Store the list of found conflicts in a file as we'll be using the
# information multiple times. Storing things in the cache dir allows
# us to be lazy as they'll be automatically removed on script end.
grep -Fxf "$mak_dir/cf_m" -- "$@" 2>/dev/null > "$mak_dir/cf" ||:
# Enable alternatives automatically if it is safe to do so.
# This checks to see that the package that is about to be installed
# doesn't overwrite anything it shouldn't in '/var/db/kiss/installed'.
grep -q ":/var/db/kiss/installed/" "$mak_dir/cf" || choice_auto=1
if [ "$KISS_CHOICE" != 0 ] &&
[ "$choice_auto" = 1 ] &&
[ -s "$mak_dir/cf" ]; then
# This is a novel way of offering an "alternatives" system.
# It is entirely dynamic and all "choices" are created and
# destroyed on the fly.
#
# When a conflict is found between two packages, the file
# is moved to a directory called "choices" and its name
# changed to store its parent package and its intended
# location.
#
# The package's manifest is then updated to reflect this
# new location.
#
# The 'kiss alternatives' command parses this directory and
# offers you the CHOICE of *swapping* entries in this
# directory for those on the filesystem.
#
# The alternatives command does the same thing we do here,
# it rewrites manifests and moves files around to make
# this work.
#
# Pretty nifty huh?
while IFS=: read -r _ con; do
printf '%s\n' "Found conflict $con"
# Create the "choices" directory inside of the tarball.
# This directory will store the conflicting file.
mkdir -p "$tar_dir/$p_name/${cho_dir:=var/db/kiss/choices}"
# Construct the file name of the "db" entry of the
# conflicting file. (pkg_name>usr>bin>ls)
con_name=$(printf %s "$con" | sed 's|/|>|g')
# Move the conflicting file to the choices directory
# and name it according to the format above.
mv -f "$tar_dir/$p_name/$con" \
"$tar_dir/$p_name/$cho_dir/$p_name$con_name" 2>/dev/null || {
log "File must be in ${con%/*} and not a symlink to it"
log "This usually occurs when a binary is installed to"
log "/sbin instead of /usr/bin (example)"
log "Before this package can be used as an alternative,"
log "this must be fixed in $p_name. Contact the maintainer"
die "by finding their details via 'kiss-maintainer'" "" "!>"
}
done < "$mak_dir/cf"
log "$p_name" "Converted all conflicts to choices (kiss a)"
# Rewrite the package's manifest to update its location
# to its new spot (and name) in the choices directory.
pkg_manifest "$p_name" "$tar_dir" 2>/dev/null
elif [ -s "$mak_dir/cf" ]; then
log "Package '$p_name' conflicts with another package" "" "!>"
log "Run 'KISS_CHOICE=1 kiss i $p_name' to add conflicts" "" "!>"
die "as alternatives." "" "!>"
fi
}
pkg_swap() {
# Swap between package alternatives.
pkg_list "$1" >/dev/null
alt=$(printf %s "$1$2" | sed 's|/|>|g')
cd "$sys_db/../choices"
[ -f "$alt" ] || [ -h "$alt" ] ||
die "Alternative '$1 $2' doesn't exist"
if [ -f "$2" ]; then
# Figure out which package owns the file we are going to swap for
# another package's. Print the full path to the manifest file which
# contains the match to our search.
pkg_owns=$(set +f; grep -lFx "$2" "$sys_db/"*/manifest) ||:
# Extract the package name from the path above.
pkg_owns=${pkg_owns%/*}
pkg_owns=${pkg_owns##*/}
# Ensure that the file we're going to swap is actually owned by a
# package. If it is not, we have to die here.
[ "$pkg_owns" ] || die "File '$2' exists on filesystem but isn't owned"
log "Swapping '$2' from '$pkg_owns' to '$1'"
# Convert the current owner to an alternative and rewrite its manifest
# file to reflect this.
cp -Pf "$KISS_ROOT/$2" "$pkg_owns>${alt#*>}"
# Replace the matching line in the manifest with the desired replacement.
# This used to be a 'sed' call which turned out to be a little
# error-prone in some cases. This new method is a tad slower but ensures
# we never wipe the file due to a command error.
while read -r line; do
case $line in
"$2") printf '%s\n' "${PWD#"$KISS_ROOT"}/$pkg_owns>${alt#*>}" ;;
*) printf '%s\n' "$line" ;;
esac
done < "../installed/$pkg_owns/manifest" | sort -r > "$mak_dir/.$1"
mv -f "$mak_dir/.$1" "../installed/$pkg_owns/manifest"
fi
# Convert the desired alternative to a real file and rewrite the manifest
# file to reflect this. The reverse of above.
mv -f "$alt" "$KISS_ROOT/$2"
# Replace the matching line in the manifest with the desired replacement.
# This used to be a 'sed' call which turned out to be a little error-prone
# in some cases. This new method is a tad slower but ensures we never wipe
# the file due to a command error.
while read -r line; do
case $line in
"${PWD#"$KISS_ROOT"}/$alt") printf '%s\n' "$2" ;;
*) printf '%s\n' "$line" ;;
esac
done < "../installed/$1/manifest" | sort -r > "$mak_dir/.$1"
mv -f "$mak_dir/.$1" "../installed/$1/manifest"
}
pkg_install_files() {
# Reverse the manifest file so that we start shallow and go deeper as we
# iterate over each item. This is needed so that directories are created
# going down the tree.
sort "$2/$pkg_db/${2##*/}/manifest" |
while read -r file; do
# Grab the octal permissions so that directory creation
# preserves permissions.
# See: [2] at top of script.
rwx=$(ls -ld "$2/${file#/}") oct='' b='' o=0
# Convert the output of 'ls' (rwxrwx---) to octal. This is simply
# a 1-9 loop with the second digit being the value of the field.
for c in 14 22 31 44 52 61 74 82 91; do
rwx=${rwx#?}
case $rwx in
[rwx]*): "$((o+=${c#?}))" ;;
[st]*): "$((o+=1))" "$((b+=4 / (${c%?}/3)))" ;;
[ST]*): "$((b+=1))" ;;
esac
[ "$((${c%?} % 3))" = 0 ] && oct=$oct$o o=0
done
_file=$KISS_ROOT/${file#/}
# Copy files and create directories (preserving permissions),
# skipping anything located in /etc/.
#
# The 'test' will run with '-e' for no-overwrite and '-z'
# for overwrite.
case $file in /etc/*) ;;
*/)
# Skip directories if they already exist in the file system.
# (Think /usr/bin, /usr/lib, etc).
[ -d "$_file" ] || mkdir -m "$oct" "$_file"
;;
*)
# Skip directories as they're likely symlinks in this case.
# Pure directories in manifests have a suffix of '/'.
[ -d "$_file" ] || test "$1" "$_file" || {
cp -fP "$2/${file#/}" "$_file"
# Skip changing permissions of symlinks. This prevents
# errors when the symlink exists prior to the target.
[ -h "$_file" ] || chmod "$b$oct" "$_file"
}
esac
done ||:
}
pkg_remove_files() {
# Remove a file list from the system. This function runs during package
# installation and package removal. Combining the removals in these two
# functions allows us to stop duplicating code.
while read -r file; do
case $file in /etc/?*[!/])
sum_sys=$(sh256 "$KISS_ROOT/$file")
sum_old=$(grep -F "$sum_sys" "$mak_dir/c")
[ "$sum_sys" = "$sum_old" ] || {
printf 'Skipping %s (modified)\n' "$file"
continue
}
esac 2>/dev/null ||:
_file=${KISS_ROOT:+"$KISS_ROOT/"}${file%%/}
# Queue all directory symlinks for later removal.
if [ -h "$_file" ] && [ -d "$_file" ]; then
case $file in /*/*/)
set -- "$@" "$_file"
esac
# Remove empty directories.
elif [ -d "$_file" ]; then
rmdir "$_file" 2>/dev/null ||:
# Remove everything else.
else
rm -f "$_file"
fi
done ||:
# Remove all broken directory symlinks.
for sym do
[ -e "$sym" ] || rm -f "$sym"
done
}
pkg_etc() (
[ -d "$tar_dir/$pkg_name/etc" ] || return 0
cd "$tar_dir/$pkg_name"
# Create all directories beforehand.
find etc -type d | while read -r dir; do
mkdir -p "$KISS_ROOT/$dir"
done
# Handle files in /etc/ based on a 3-way checksum check.
find etc ! -type d | sort | while read -r file; do
i=$((i + 1))
{ sum_new=$(sh256 "$file")
sum_sys=$(sh256 "$KISS_ROOT/$file")
sum_old=$(awk "NR == $i" "$mak_dir/c"); } 2>/dev/null ||:
log "$pkg_name" "Doing 3-way handshake for $file"
printf '%s\n' "Previous: ${sum_old:-null}"
printf '%s\n' "System: ${sum_sys:-null}"
printf '%s\n' "New: ${sum_new:-null}"
# Use a case statement to easily compare three strings at
# the same time. Pretty nifty.
case ${sum_old:-null}${sum_sys:-null}${sum_new} in
# old = Y, sys = X, new = Y
"${sum_new}${sum_sys}${sum_old}")
log "Skipping $file"
continue
;;
# old = X, sys = X, new = X
# old = X, sys = Y, new = Y
# old = X, sys = X, new = Y
"${sum_old}${sum_old}${sum_old}"|\
"${sum_old:-null}${sum_sys}${sum_sys}"|\
"${sum_sys}${sum_old}"*)
log "Installing $file"
new=
;;
# All other cases.
*)
war "$pkg_name" "saving /$file as /$file.new"
new=.new
;;
esac
cp -fPp "$file" "$KISS_ROOT/${file}${new}"
chown root:root "$KISS_ROOT/${file}${new}" 2>/dev/null
done ||:
)
pkg_removable() {
# Check if a package is removable and die if it is not.
# A package is removable when it has no dependents or
# when KISS_FORCE is set to 1.
case ${KISS_FORCE:=0} in 0)
log "$1" "Checking if package removable"
cd "$sys_db"
set +f
! grep -lFx -- "$1" */depends ||
die "$1" "Not removable, has dependents"
set -f
cd "$OLDPWD"
esac
}
pkg_remove() {
# Remove a package and all of its files. The '/etc' directory is handled
# differently and configuration files are *not* overwritten.
pkg_list "$1" >/dev/null || return
pkg_removable "$1"
# Block being able to abort the script with 'Ctrl+C' during removal.
# Removes all risk of the user aborting a package removal leaving an
# incomplete package installed.
trap '' INT
if [ -x "$sys_db/$1/pre-remove" ]; then
log "$1" "Running pre-remove script"
"$sys_db/$1/pre-remove" ||:
fi
# Make a backup of the etcsums file (if it exists).
cp -f "$sys_db/$1/etcsums" "$mak_dir/c" 2>/dev/null ||:
log "$1" "Removing package"
pkg_remove_files < "$sys_db/$1/manifest"
# Reset 'trap' to its original value. Removal is done so
# we no longer need to block 'Ctrl+C'.
trap pkg_clean EXIT INT
log "$1" "Removed successfully"
}
pkg_install() {
# Install a built package tarball.
#
# Package installation works similarly to the method used by Slackware in
# some of their tooling. It's not the obvious solution to the problem,
# however it is the best solution at this given time.
#
# When an installation is an update to an existing package, instead of
# removing the old version first we do something different.
#
# The new version is installed overwriting any files which it has in
# common with the previously installed version of the package.
#
# A "diff" is then generated between the old and new versions and contains
# any files existing in the old version but not the new version.
#
# The package manager then goes and removes these files which leaves us
# with the new package version in the file system and all traces of the
# old version gone.
#
# For good measure the package manager will then install the new package
# an additional time. This is to ensure that the above diff didn't contain
# anything incorrect.
#
# This is the better method as it is "seamless". An update to busybox won't
# create a window in which there is no access to all of its utilities to
# give an example.
# Install can also take the full path to a tarball. We don't need to check
# the repository if this is the case.
if [ -f "$1" ] && [ -z "${1%%*.tar.*}" ]; then
tar_file=$1 pkg_name=${1##*/} pkg_name=${pkg_name%[#@]*}
elif pkg_cache "$1" 2>/dev/null; then
pkg_name=$1
else
case $1 in
*.tar.*) die "Tarball '$1' does not exist" ;;
*) die "Package '$1' has not yet been built"
esac
fi
mkdir -p "$tar_dir/$pkg_name"
cd "$tar_dir/$pkg_name"
# The tarball is extracted to a temporary directory where its contents are
# then "installed" to the filesystem. Running this step as soon as possible
# allows us to also check the validity of the tarball and bail out early
# if needed.
decompress "$tar_file" | tar xf -
# Naively assume that the existence of a manifest file is all that
# determines a valid KISS package from an invalid one. This should be a
# fine assumption to make in 99.99% of cases.
[ -f "./$pkg_db/$pkg_name/manifest" ] || die "Not a valid KISS package"
# Ensure that the tarball's manifest is correct by checking that each file
# and directory inside of it actually exists.
[ "$KISS_FORCE" = 1 ] || {
log "$pkg_name" "Checking that manifest is valid"
while read -r line; do
[ -h "./$line" ] || [ -e "./$line" ] ||
die "File $line missing from tarball but mentioned in manifest"
done < "$pkg_db/$pkg_name/manifest"
log "$pkg_name" "Checking that all dependencies are installed"
[ -f "$tar_dir/$pkg_name/$pkg_db/$pkg_name/depends" ] &&
while read -r dep dep_type || [ "$dep" ]; do
[ "${dep##\#*}" ] || continue
[ "$dep_type" ] || pkg_list "$dep" >/dev/null ||
install_dep="$install_dep'$dep', "
done < "$tar_dir/$pkg_name/$pkg_db/$pkg_name/depends"
[ "$install_dep" ] && die "$1" "Package requires ${install_dep%, }"
}
run_hook pre-install "$pkg_name" "$tar_dir/$pkg_name"
pkg_conflicts "$pkg_name"
log "$pkg_name" "Installing package"
# Block being able to abort the script with Ctrl+C during installation.
# Removes all risk of the user aborting a package installation leaving
# an incomplete package installed.
trap '' INT
# If the package is already installed (and this is an upgrade) make a
# backup of the manifest and etcsums files.
cp -f "$sys_db/$pkg_name/manifest" "$mak_dir/m" 2>/dev/null ||:
cp -f "$sys_db/$pkg_name/etcsums" "$mak_dir/c" 2>/dev/null ||:
# Install the package's files by iterating over its manifest.
pkg_install_files -z "$tar_dir/$pkg_name"
# Handle /etc/ files in a special way (via a 3-way checksum) to determine
# how these files should be installed. Do we overwrite the existing file?
# Do we install it as $file.new to avoid deleting user configuration? etc.
#
# This is more or less similar to Arch Linux's Pacman with the user manually
# handling the .new files when and if they appear.
pkg_etc
# This is the aforementioned step removing any files from the old version of
# the package if the installation is an update. Each file type has to be
# specially handled to ensure no system breakage occurs.
#
# Files in /etc/ are skipped entirely as they'll be handled via a 3-way
# checksum system due to the nature of their existence.
grep -vFxf "$sys_db/$pkg_name/manifest" "$mak_dir/m" 2>/dev/null |
pkg_remove_files
# Install the package's files a second time to fix any mess caused by the
# above removal of the previous version of the package.
log "$pkg_name" "Verifying installation"
pkg_install_files -e "$tar_dir/$pkg_name"
# Reset 'trap' to its original value. Installation is done so we no longer
# need to block 'Ctrl+C'.
trap pkg_clean EXIT INT
if [ -x "$sys_db/$pkg_name/post-install" ]; then
log "$pkg_name" "Running post-install hook"
hook_output=$("$sys_db/$pkg_name/post-install" 2>&1)
[ -z "$hook_output" ] || {
log "$pkg_name" "Running post-install hook" 2>&1
printf '%s\n' "$hook_output"
} |
# 'tee' is used as we would still like to display 'stderr'
tee -a "$log_dir/post-install-$time-$pid" >/dev/null
fi
run_hook post-install "$pkg_name" "$sys_db/$pkg_name"
log "$pkg_name" "Installed successfully"
}
pkg_updates() {
# Check all installed packages for updates. So long as the installed
# version and the version in the repositories differ, it's considered
# an update.
log "Updating repositories"
# Create a list of all repositories.
# See [1] at top of script.
# shellcheck disable=2046,2086
{ IFS=:; set -- $KISS_PATH; unset IFS; }
# Update each repository in '$KISS_PATH'.
for repo do
# Handle null repositories (KISS_PATH=repo:::::repo).
[ "$repo" ] || continue
[ -d "$repo" ] || {
log "$repo" " "
printf 'Skipping repository, not a directory\n'
continue
}
cd "$repo"
git remote >/dev/null 2>&1 || {
log "$repo" " "
printf 'Skipping git pull, not a repository\n'
continue
}
# Go to the repository's root directory.
git_root=$(git rev-parse --show-toplevel)
cd "${git_root:?"failed to find git root for '$PWD'"}"
# Go to the real root directory if this is a submodule.
git_root=$(git rev-parse --show-superproject-working-tree)
cd "${git_root:-"$PWD"}"
contains "$repos" "$PWD" || {
repos="$repos $PWD "
# Display a tick if signing is enabled for this repository.
case $(git config merge.verifySignatures) in
true) log "$PWD" "[signed] " ;;
*) log "$PWD" " " ;;
esac
if [ -w "$PWD" ] && [ "$uid" != 0 ]; then
git pull
git submodule update --remote --init -f
else
[ "$uid" = 0 ] || log "$PWD" "Need root to update"
# Find out the owner of the repository and spawn
# git as this user below.
#
# This prevents 'git' from changing the original
# ownership of files and directories in the rare
# case that the repository is owned by a 3rd user.
file_owner "$PWD"
# We're in a repository which is owned by a 3rd
# user. Not root or the current user.
[ "$user" = root ] || log "Dropping to $user for pull"
as_root git pull
as_root git submodule update --remote --init -f
fi
}
done
log "Checking for new package versions"
set +f --
for pkg in "$sys_db/"*; do
read -r db_ver db_rel < "$pkg/version" ||
die "${pkg##*/}" "Failed to read installed version"
pkg_find "${pkg##*/}"
read -r re_ver re_rel < "$repo_dir/version" ||
die "${pkg##*/}" "Failed to read repository version"
# Compare installed packages to repository packages.
[ "$db_ver-$db_rel" = "$re_ver-$re_rel" ] || {
printf '%s\n' "${pkg##*/} $db_ver-$db_rel ==> $re_ver-$re_rel"
set -- "$@" "${pkg##*/}"
}
done
set -f
case " $* " in
*" kiss "*)
log "Detected package manager update"
log "The package manager will be updated first"
prompt
pkg_build kiss
args i kiss
log "Updated the package manager"
log "Re-run 'kiss update' to update your system"
;;
" ")
log "Everything is up to date"
;;
*)
log "Packages to update: $*"
pkg_update=1
pkg_build "$@"
log "Updated all packages"
;;
esac
}
pkg_clean() {
# Clean up on exit or error. This removes everything related to the build.
[ "$KISS_DEBUG" = 1 ] || rm -rf "$tmp_dir"
}
args() {
# Parse script arguments manually. This is rather easy to do in our case
# since the first argument is always an "action" and the arguments that
# follow are all package names.
action=$1
shift "$(($# != 0))"
# Unless this is a search, sanitize the user's input. The call to
# 'pkg_find()' supports basic globbing, ensure input doesn't expand
# to anything except for when this behavior is needed.
#
# This handles the globbing characters '*', '!', '[' and ']' as per:
# https://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
[ "${action##[aos]*}" ] && case "$*" in *\**|*\!*|*\[*|*\]*)
die "Arguments contain invalid characters: '!*[]' ($*)"
esac
# CRUX style usage using the current directory as the name of the package
# to be operated on. This needs to sit before the 'as_root()' calls as
# they reset the current working directory during their invocations.
[ "$1" ] || case $action in b|build|c|checksum|d|download|i|install|r|remove)
export KISS_PATH=${PWD%/*}:$KISS_PATH
set -- "${PWD##*/}"
esac
# Rerun the script as root with a fixed environment if needed. We sadly
# can't run singular functions as root so this is needed.
case $action in a|alternatives|i|install|r|remove)
[ -z "$1" ] || [ -w "$KISS_ROOT/" ] || [ "$uid" = 0 ] || {
as_root env \
HOME="$HOME" \
XDG_CACHE_HOME="$XDG_CACHE_HOME" \
KISS_PATH="$KISS_PATH" \
KISS_FORCE="$KISS_FORCE" \
KISS_ROOT="$KISS_ROOT" \
KISS_CHOICE="$KISS_CHOICE" \
KISS_COLOR="$KISS_COLOR" \
KISS_TMPDIR="$KISS_TMPDIR" \
"$0" "$action" "$@"
return
}
esac
# Actions can be abbreviated to their first letter. This saves keystrokes
# once you memorize the commands.
case $action in
a|alternatives)
if [ "$1" = - ]; then
while read -r pkg path; do
pkg_swap "$pkg" "$path"
done
elif [ "$1" ]; then
pkg_swap "$@"
else
# Go over each alternative and format the file
# name for listing. (pkg_name>usr>bin>ls)
set +f; for pkg in "$sys_db/../choices"/*; do
printf '%s\n' "${pkg##*/}"
done | sed 's|>| /|; s|>|/|g; /\*/d'
fi
;;
c|checksum)
for pkg do pkg_lint "$pkg"; done
for pkg do pkg_sources "$pkg" c; done
for pkg do
pkg_find "$pkg"
[ -f "$repo_dir/sources" ] || {
log "$pkg" "No sources file, skipping checksums"
continue
}
sums=$(pkg_checksums "$pkg")
[ "$sums" ] || {
log "$pkg" "No sources needing checksums"
continue
}
printf '%s\n' "$sums"
printf '%s\n' "$sums" > "$repo_dir/checksums"
log "$pkg" "Generated checksums"
done
;;
i|install|r|remove)
pkg_order "$@"
case $action in
i*) for pkg in $order; do pkg_install "$pkg"; done ;;
r*) for pkg in $redro; do pkg_remove "$pkg"; done
esac
;;
b|build) pkg_build "${@:?No packages installed}" ;;
d|download) for pkg do pkg_sources "$pkg"; done ;;
l|list) pkg_list "$@" ;;
u|update) pkg_updates ;;
s|search) for pkg do pkg_find "$pkg" all; done ;;
v|version) printf '5.4.0\n' ;;
'')
log 'kiss [a|b|c|d|i|l|r|s|u|v] [pkg]...'
log 'alternatives List and swap to alternatives'
log 'build Build a package'
log 'checksum Generate checksums'
log 'download Pre-download all sources'
log 'install Install a package'
log 'list List installed packages'
log 'remove Remove a package'
log 'search Search for a package'
log 'update Update the system'
log 'version Package manager version'
printf '\nRun "kiss help-ext" to see all actions\n'
;;
help-ext)
log 'Installed extensions (kiss-* in PATH)'
# Behavior intentional.
# shellcheck disable=2046,2030,2031
# see [1] at top of script.
set -- $(pkg_find kiss-\* all -x "$PATH")
# To align descriptions figure out which extension has the longest
# name by doing a simple 'name > max ? name : max' on the basename
# of the path with 'kiss-' stripped as well.
#
# This also removes any duplicates found in '$PATH', picking the
# first match.
for path do p=${path#*/kiss-}
case " $seen " in
*" $p "*) shift ;;
*) seen=" $seen $p " max=$((${#p} > max ? ${#p}+1 : max))
esac
done
# Print each extension, grab its description from the second line
# in the file and align the output based on the above max.
for path do
printf "%b->%b %-${max}s " "$lcol" "$lclr" "${path#*/kiss-}"
sed -n 's/^# *//;2p' "$path"
done >&2
;;
*)
pkg_find "kiss-$action*" "" -x "$PATH"
"$repo_dir" "$@"
;;
esac
if [ -s "$log_dir/post-install-$time-$pid" ]; then
cat "$log_dir/post-install-$time-$pid"
log "Post-install log stored to $log_dir/post-install-$time-$pid"
fi
}
create_tmp_dirs() {
# Root directory.
KISS_ROOT=${KISS_ROOT%"${KISS_ROOT##*[!/]}"}
# This allows for automatic setup of a KISS chroot and will
# do nothing on a normal system.
mkdir -p "$KISS_ROOT/" 2>/dev/null ||:
# System package database.
sys_db=$KISS_ROOT/${pkg_db:=var/db/kiss/installed}
# Top-level cache directory.
cac_dir=${XDG_CACHE_HOME:-"${HOME%"${HOME##*[!/]}"}/.cache"}
cac_dir=${cac_dir%"${cac_dir##*[!/]}"}/kiss
# Persistent cache directories.
src_dir=$cac_dir/sources
log_dir=$cac_dir/logs/${time%-*}
bin_dir=$cac_dir/bin
# Top-level Temporary cache directory.
tmp_dir=${KISS_TMPDIR:="$cac_dir/proc"}
tmp_dir=${tmp_dir%"${tmp_dir##*[!/]}"}/$pid
# Temporary cache directories.
mak_dir=$tmp_dir/build
pkg_dir=$tmp_dir/pkg
tar_dir=$tmp_dir/extract
mkdir -p "$src_dir" "$log_dir" "$bin_dir" \
"$mak_dir" "$pkg_dir" "$tar_dir"
}
main() {
# Globally disable globbing and enable exit-on-error.
set -ef
# Allow the user to disable colors in output via an environment variable.
# Check this once so as to not slow down printing.
[ "$KISS_COLOR" = 0 ] || lcol='\033[1;33m' lcol2='\033[1;34m' lclr='\033[m'
# Store the original working directory to ensure that relative paths
# passed by the user on the command-line properly resolve to locations
# in the filesystem.
ppwd=$PWD
# The PID of the current shell process is used to isolate directories
# to each specific KISS instance. This allows multiple package manager
# instances to be run at once. Store the value in another variable so
# that it doesn't change beneath us.
pid=$$
# Catch errors and ensure that build files and directories are cleaned
# up before we die. This occurs on 'Ctrl+C' as well as success and error.
trap pkg_clean EXIT INT
# Figure out which 'sudo' command to use based on the user's choice or what
# is available on the system.
cmd_su=${KISS_SU:-"$(
command -v sudo ||
command -v doas ||
command -v ssu ||
command -v su
)"} || cmd_su=su
# Figure out which utility is available to dump elf information.
cmd_elf=${KISS_ELF:="$(
command -v readelf ||
command -v eu-readelf ||
command -v llvm-readelf
)"} || cmd_elf=ldd
# Store the date and time of script invocation to be used as the name of
# the log files the package manager creates uring builds.
time=$(date +%Y-%m-%d-%H:%M)
# Make note of the user's current ID to do root checks later on.
# This is used enough to warrant a place here.
uid=$(id -u)
create_tmp_dirs
args "$@"
}
main "$@"
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