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ac3faed601
kiss/kiss
Dylan Araps ac3faed601 kiss: clean up
2019-09-14 00:20:33 +03:00

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#!/bin/sh -ef
#
# This is a simple package manager written in POSIX 'sh' for use
# in KISS Linux (https://getkiss.org).
#
# This script runs with '-ef' meaning:
# '-e': Abort on any non-zero exit code.
# '-f': Disable globbing globally.
#
# Warnings related to word splitting and globbing are disabled.
# All word splitting in this script is *safe* and intentional.
# shellcheck disable=2046,2086
#
# Dylan Araps.
die() {
# Print a message and exit with '1' (error).
printf '\033[1;31m!>\033[m %s.\n' "$@" >&2
exit 1
}
log() {
# Print a message prettily.
printf '\033[1;32m->\033[m %s.\n' "$@"
}
contains() {
# Check if a "string list" contains a word.
case " $1 " in *" $2 "*) return 0; esac
return 1
}
pkg_lint() {
# Check that each mandatory file in the package entry exists.
log "[$1] Checking repository files"
repo_dir=$(pkg_find "$1")
cd "$repo_dir" || die "'$repo_dir' not accessible"
[ -f sources ] || die "[$1] Sources file not found"
[ -x build ] || die "[$1] Build file not found or not executable"
[ -s version ] || die "[$1] Version file not found or empty"
# Ensure that the release field in the version file is set
# to something. The above test checks for the version field inclusively.
read -r _ release < version
[ "$release" ] || die "Release field not found in version file"
}
pkg_find() {
# Figure out which repository a package belongs to by
# searching for directories matching the package name
# in $KISS_PATH/*.
[ "$KISS_PATH" ] || die "\$KISS_PATH needs to be set"
# Find the repository containing a package.
# Searches installed packages if the package is absent
# from the repositories.
set -- "$1" $(IFS=:; find $KISS_PATH "$sys_db" -maxdepth 1 -name "$1")
# 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.
[ "$2" ] || die "Package '$1' not in any repository"
printf '%s\n' "$2"
}
pkg_list() {
# List installed packages. As the format is files and
# directories, this just involves a simple for loop and
# file read.
# Change directories to the database. This allows us to
# avoid having to 'basename' each path. If this fails,
# set '$1' to mimic a failed glob which indicates that
# nothing is installed.
cd "$sys_db" 2>/dev/null || set -- "$sys_db/"\*
# Optional arguments can be passed to check for specific
# packages. If no arguments are passed, list all. As we
# loop over '$@', if there aren't any arguments we can
# just set the directory contents to the argument list.
[ "$1" ] || { set +f; set -f -- *; }
# If the 'glob' above failed, exit early as there are no
# packages installed.
[ "$1" = "$sys_db/"\* ] && return 1
# Loop over each package and print its name and version.
for pkg; do
[ -d "$pkg" ] || {
log "Package '$pkg' is not installed"
return 1
}
read -r version 2>/dev/null < "$pkg/version" || version=null
printf '%s\n' "$pkg $version"
done
}
pkg_sources() {
# Download any remote package sources. The existence of local
# files is also checked.
log "[$1] Downloading sources"
# Store each downloaded source in a directory named after the
# package it belongs to. This avoid conflicts between two packages
# having a source of the same name.
mkdir -p "$src_dir/$1" && cd "$src_dir/$1"
repo_dir=$(pkg_find "$1")
while read -r src _; do
case $src in
# Remote source.
*://*)
[ -f "${src##*/}" ] && {
log "[$1] Found cached source '${src##*/}'"
continue
}
wget "$src" || {
rm -f "${src##*/}"
die "[$1] Failed to download $src"
}
;;
# Local source.
*)
[ -f "$repo_dir/$src" ] || die "[$1] No local file '$src'"
log "[$1] Found local file '$src'"
;;
esac
done < "$repo_dir/sources"
}
pkg_extract() {
# Extract all source archives to the build directory and copy over
# any local repository files.
log "[$1] Extracting sources"
repo_dir=$(pkg_find "$1")
while read -r src dest; do
mkdir -p "$mak_dir/$1/$dest" && cd "$mak_dir/$1/$dest"
case $src in
# Only 'tar' archives are currently supported for extraction.
# Any other file-types are simply copied to '$mak_dir' which
# allows you to extract them manually.
*://*.tar*|*://*.tgz)
tar xf "$src_dir/$1/${src##*/}" --strip-components 1 \
|| die "[$1] Couldn't extract ${src##*/}"
;;
*)
# Local file.
if [ -f "$repo_dir/$src" ]; then
cp -f "$repo_dir/$src" .
# Remote file.
elif [ -f "$src_dir/$1/${src##*/}" ]; then
cp -f "$src_dir/$1/${src##*/}" .
else
die "[$1] Local file $src not found"
fi
;;
esac
done < "$repo_dir/sources"
}
pkg_depends() {
# Resolve all dependencies and install them in the right order.
repo_dir=$(pkg_find "$1")
# This does a depth-first search. The deepest dependencies are
# listed first and then the parents in reverse order.
contains "$deps" "$1" || {
# Recurse through the dependencies of the child
# packages. Keep doing this.
[ -f "$repo_dir/depends" ] &&
while read -r dep _; do
[ "${dep##\#*}" ] || continue
pkg_depends "$dep" ||:
done < "$repo_dir/depends"
# After child dependencies are added to the list,
# add the package which depends on them.
[ "$2" ] || deps="$deps $1 "
}
}
pkg_verify() {
# Verify all package checksums. This is achieved by generating
# a new set of checksums and then comparing those with the old
# set.
# Generate a second set of checksums to compare against the
# repository's checksums for the package.
pkg_checksums "$1" | cmp -s - "$(pkg_find "$1")/checksums" || {
log "[$1] Checksum mismatch"
# Instead of dying above, log it to the terminal. Also define a
# variable so we *can* die after all checksum files have been
# checked.
mismatch="$mismatch$1 "
}
}
pkg_strip() {
# Strip package binaries and libraries. This saves space on the
# system as well as on the tar-balls we ship for installation.
# Package has stripping disabled, stop here.
[ -f "$(pkg_find "$1")/nostrip" ] && return
log "[$1] Stripping binaries and libraries"
# Strip only files matching the below ELF types.
find "$pkg_dir/$1" -type f | while read -r file; do
case "$(readelf -h "$file" 2>/dev/null)" in
*" DYN "*)
strip_opt=--strip-unneeded
;;
*" REL "*)
strip_opt=--strip-debug
;;
*" EXEC "*)
strip_opt=--strip-all
;;
*) continue ;;
esac
# Suppress errors here as some binaries and libraries may
# fail to strip. This is OK.
strip "$strip_opt" "$file" 2>/dev/null ||:
done
}
pkg_fixdeps() {
# 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 "[$1] Checking for missing dependencies"
# Go to the directory containing the built package to
# simplify path building.
cd "$pkg_dir/$1/$pkg_db/$1"
# Make a copy of the depends file if it exists to have a
# reference to 'diff' against.
[ -f depends ] && cp -f depends depends-copy
# Get a list of binaries and libraries, false files
# will be found, however it's faster to get 'ldd' to check
# them anyway than to filter them out.
find "$pkg_dir/$1" -type f 2>/dev/null | while read -r file; do
# Run 'ldd' on the file and parse each line. The code
# then checks to see which packages own the linked
# libraries and it prints the result.
ldd "$file" 2>/dev/null | while read -r dep; do
# Skip lines containing 'ldd'.
[ "${dep##*ldd*}" ] || continue
# Extract the file path from 'ldd' output.
dep=${dep#* => }
dep=${dep% *}
# Traverse symlinks to get the true path to the file.
dep=$(readlink -f "$KISS_ROOT/${dep##$KISS_ROOT}")
# Figure out which package owns the file.
dep=$(set +f; grep -lFx "${dep##$KISS_ROOT}" "$sys_db/"*/manifest)
# Extract package name from 'grep' match.
dep=${dep%/*}
dep=${dep##*/}
case $dep in
# Skip listing these packages as dependencies.
musl|gcc|${PWD##*/}) ;;
*) printf '%s\n' "$dep" ;;
esac
done ||:
done >> depends-copy
# Remove duplicate entries from the new depends file.
# This remove duplicate lines looking *only* at the
# first column.
sort -u -k1,1 depends-copy > depends-new
# Display a 'diff' of the new dependencies agaisnt
# the old ones. '-N' treats non-existent files as blank.
diff -N depends depends-new ||:
# Do some clean up as this required a few temporary files.
mv -f depends-new depends
rm -f depends-copy
}
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 "[$1] Generating manifest"
# This funcion runs as a sub-shell to avoid having to 'cd' back to the
# prior directory before being able to continue.
cd "$pkg_dir/$1"
# Find all files and directories in the package. Directories are printed
# with a trailing forward slash '/'. The list is then reversed with
# directories appearing *after* their contents.
find . -mindepth 1 -type d -exec printf '%s/\n' {} + -or -print |
sort -r | sed ss.ss > "$pkg_dir/$1/$pkg_db/$1/manifest"
)
pkg_tar() {
# Create a tar-ball from the built package's files.
# This tar-ball also contains the package's database entry.
log "[$1] Creating tar-ball"
# Read the version information to name the package.
read -r version release < "$(pkg_find "$1")/version"
# Create a tar-ball from the contents of the built package.
tar zpcf "$bin_dir/$1#$version-$release.tar.gz" -C "$pkg_dir/$1" . ||
die "[$1] Failed to create tar-ball"
log "[$1] Successfully created tar-ball"
}
pkg_build() {
# Build packages and turn them into packaged tar-balls. This function
# also checks checksums, downloads sources and ensure all dependencies
# are installed.
log "Resolving dependencies"
for pkg; do
contains "$explicit" "$pkg" || {
pkg_depends "$pkg" explicit
# Mark packages passed on the command-line
# separately from those detected as dependencies.
explicit="$explicit $pkg "
}
done
explicit_build=$explicit
# 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; do
# There's no better way to remove a word from a string in
# POSIX 'sh' sadly.
contains "$deps" "$pkg" &&
explicit=$(echo "$explicit" | sed "s/ $pkg / /g")
done
# Set the resolved dependency list as the function's arguments.
set -- $deps $explicit
# The dependency solver always lists all dependencies regardless of
# whether or not they are installed. Filter out installed dependencies.
for pkg; do
contains "$explicit_build" "$pkg" || {
pkg_list "$pkg" >/dev/null && continue
}
build_packages="$build_packages$pkg "
done
# Set the filtered dependency list as the function's arguments.
set -- $build_packages
log "Building: $*"
# Only ask for confirmation if more than one package needs to be built.
[ $# -gt 1 ] || [ "$pkg_update" ] && {
log "Continue?: Press Enter to continue or Ctrl+C to abort here"
# POSIX 'read' has none of the "nice" options like '-n', '-p'
# etc etc. This is the most basic usage of 'read'.
# '_' is used as 'dash' errors when no variable is given to 'read'.
read -r _ || exit
}
log "Checking to see if any dependencies have already been built"
log "Installing any pre-built dependencies"
# Install any pre-built dependencies if they exist in the binary
# directory and are up to date.
for pkg; do
# Don't check for a pre-built package if it was passed to KISS
# directly.
contains "$explicit_build" "$pkg" && {
shift
set -- "$@" "$pkg"
continue
}
# Figure out the version and release.
read -r version release < "$(pkg_find "$pkg")/version"
# Remove the current package from the package list.
shift
# Install any pre-built binaries if they exist.
# This calls 'args' to inherit a root check and call
# to 'sudo' to elevate permissions.
[ -f "$bin_dir/$pkg#$version-$release.tar.gz" ] && {
log "[$pkg] Found pre-built binary, installing"
args i "$bin_dir/$pkg#$version-$release.tar.gz"
continue
}
# Add the removed package back to the list if it doesn't
# have a pre-built binary.
set -- "$@" "$pkg"
done
for pkg; do pkg_lint "$pkg"; done
for pkg; do
# Ensure that checksums exist prior to building the package.
[ -f "$(pkg_find "$pkg")/checksums" ] || {
log "[$pkg] Checksums are missing"
# Instead of dying above, log it to the terminal. Also define a
# variable so we *can* die after all checksum files have been
# checked.
no_sums="$no_sums$pkg "
}
done
# Die here as packages without checksums were found above.
[ "$no_sums" ] && die "Checksums missing, run 'kiss checksum ${no_sums% }'"
for pkg; do pkg_sources "$pkg"; done
for pkg; do pkg_verify "$pkg"; done
# Die here as packages with differing checksums were found above.
[ "$mismatch" ] && die "Checksum mismatch with: ${mismatch% }"
# Extract all packages before build to catch any extraction
# errors early.
for pkg; do pkg_extract "$pkg"; done
# Finally build and create tarballs for all passed packages and
# dependencies.
for pkg; do
repo_dir=$(pkg_find "$pkg")
# Install built packages to a directory under the package name
# to avoid collisions with other packages.
mkdir -p "$pkg_dir/$pkg/$pkg_db"
# Move to the build directory.
cd "$mak_dir/$pkg"
# Call the build script.
"$repo_dir/build" "$pkg_dir/$pkg" || die "[$pkg] Build failed"
# Copy the repository files to the package directory.
# This acts as the database entry.
cp -Rf "$repo_dir" "$pkg_dir/$pkg/$pkg_db/"
log "[$pkg] Successfully built package"
# Create the manifest file early and make it empty.
# This ensure that the manifest is added to the manifest...
: > "$pkg_dir/$pkg/$pkg_db/$pkg/manifest"
pkg_strip "$pkg"
pkg_fixdeps "$pkg"
pkg_manifest "$pkg"
pkg_tar "$pkg"
# Install only dependencies of passed packages.
# Skip this check if this is a package update.
contains "$explicit" "$pkg" && [ -z "$pkg_update" ] && continue
log "[$pkg] Needed as a dependency or has an update, installing"
args i "$pkg"
done
# End here as this was a system update and all packages have been installed.
[ "$pkg_update" ] && return
log "Successfully built package(s)"
# Turn the explicit packages into a 'list'.
set -- $explicit
# Only ask for confirmation if more than one package needs to be installed.
[ $# -gt 1 ] && {
log "Install built packages? [$*]" \
"Press Enter to continue or Ctrl+C to abort here"
# POSIX 'read' has none of the "nice" options like '-n', '-p'
# etc etc. This is the most basic usage of 'read'.
# '_' is used as 'dash' errors when no variable is given to 'read'.
read -r _ && {
args i "$@"
return
}
}
log "Run 'kiss i $*' to install the built package(s)"
}
pkg_checksums() {
# Generate checksums for packages.
repo_dir=$(pkg_find "$1")
while read -r src _; do
# File is local to the package.
if [ -f "$repo_dir/$src" ]; then
src_path=$repo_dir/${src%/*}
# File is remote and was downloaded.
elif [ -f "$src_dir/$1/${src##*/}" ]; then
src_path=$src_dir/$1
# Die here if source for some reason, doesn't exist.
else
die "[$1] Couldn't find source '$src'"
fi
# An easy way to get 'sha256sum' to print with the 'basename'
# of files is to 'cd' to the file's directory beforehand.
(cd "$src_path" && sha256sum "${src##*/}") ||
die "[$1] Failed to generate checksums"
done < "$repo_dir/sources"
}
pkg_conflicts() {
# Check to see if a package conflicts with another.
log "[$2] Checking for package conflicts"
set +ef
# Extract manifest from tarball and only print files which
# exist in the filesystem. It's pointless to check for conflicts
# with files which don't presently exist.
tar xf "$1" -O "./$pkg_db/$2/manifest" | while read -r file; do
[ -f "$KISS_ROOT/$file" ] && printf '%s\n' "$file"
done |
# Filter the existing file list through the manifest of the
# presently installed version of the package (if it exists).
grep -svFxf "$sys_db/$2/manifest" - 2>/dev/null > "$cac_dir/$pid-m"
# If the generated manifest contains matches, check the
# contents for conflicts.
[ -s "$cac_dir/$pid-m" ] &&
grep -Fxf "$cac_dir/$pid-m" -- "$sys_db"/*/manifest &&
die "Package '$2' conflicts with another package"
set -ef
}
pkg_remove() {
# Remove a package and all of its files. The '/etc' directory
# is handled differently and configuration files are *not*
# overwritten.
# The package is not installed, don't do anything.
pkg_list "$1" >/dev/null || {
log "[$1] Not installed"
return
}
# Enable globbing.
set +f
# Make sure that nothing depends on this package.
[ "$2" = check ] && for file in "$sys_db/"*; do
# Check each depends file for the package and if it's
# a run-time dependency, append to the $required_by string.
grep -qFx "$1" "$file/depends" 2>/dev/null &&
required_by="$required_by'${file##*/}', "
done
# Disable globbing.
set -f
[ "$required_by" ] &&
die "[$1] Package is required by ${required_by%, }" \
"[$1] Aborting here..."
# Block being able to abort the script with 'Ctrl+C' during removal.
# Removes all risk of the user aborting a package removal leaving
# an incomplete package installed.
trap '' INT
while read -r file; do
# The file is in '/etc' skip it. This prevents the package
# manager from removing user edited configuration files.
[ "${file##/etc/*}" ] || continue
if [ -d "$KISS_ROOT/$file" ]; then
rmdir "$KISS_ROOT/$file" 2>/dev/null || continue
else
rm -f -- "$KISS_ROOT/$file"
fi
done < "$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 tar-ball.
# Install can also take the full path to a tar-ball.
# We don't need to check the repository if this is the case.
if [ -f "$1" ] && [ -z "${1%%*.tar.gz}" ] ; then
tar_file=$1
else
# Read the version information to name the package.
read -r version release < "$(pkg_find "$1")/version"
# Construct the name of the package tarball.
tar_name=$1\#$version-$release.tar.gz
[ -f "$bin_dir/$tar_name" ] ||
die "Package '$1' has not been built" \
"Run 'kiss build $1'"
tar_file=$bin_dir/$tar_name
fi
# Figure out which package the tar-ball installs by checking for
# a database entry inside the tar-ball. If no database entry exists,
# exit here as the tar-ball is *most likely* not a KISS package.
pkg_name=$(tar tf "$tar_file" | grep -x "\./$pkg_db/.*/version") ||
die "'${tar_file##*/}' is not a valid KISS package"
pkg_name=${pkg_name%/*}
pkg_name=${pkg_name##*/}
pkg_conflicts "$tar_file" "$pkg_name"
mkdir -p "$tar_dir/$pkg_name"
# Extract the tar-ball to catch any errors before installation begins.
tar pxf "$tar_file" -C "$tar_dir/$pkg_name" ||
die "[$pkg_name] Failed to extract tar-ball"
log "[$pkg_name] Checking that all dependencies are installed"
# Make sure that all run-time dependencies are installed prior to
# installing the package.
[ -f "$tar_dir/$pkg_name/$pkg_db/$pkg_name/depends" ] &&
while read -r dep dep_type; 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 ${install_dep%, }"
log "[$pkg_name] Installing package incrementally"
# 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 file.
if [ -f "$sys_db/$pkg_name/manifest" ]; then
old_manifest=$(cat "$sys_db/$pkg_name/manifest")
else
old_manifest=
fi
# This is repeated multiple times. Better to make it a function.
pkg_rsync() {
rsync --chown=root:root -WhHKa --no-compress "$1" --exclude etc \
"$tar_dir/$pkg_name/" "$KISS_ROOT/"
}
# Install the package by using 'rsync' and overwrite any existing files
# (excluding '/etc/').
pkg_rsync --info=progress2
# If '/etc/' exists in the package, install it but don't overwrite.
[ -d "$tar_dir/$pkg_name/etc" ] &&
rsync --chown=root:root -WhHKa --no-compress --ignore-existing \
"$tar_dir/$pkg_name/etc" "$KISS_ROOT/"
# Remove any leftover files if this is an upgrade.
[ "$old_manifest" ] && {
printf '%s\n' "$old_manifest" |
grep -vFxf "$sys_db/$pkg_name/manifest" - |
while read -r file; do
# Skip deleting some leftover files.
case $file in
/etc/*|*bin/rm|*bin/busybox|*bin/rsync) continue
esac
file=$KISS_ROOT/$file
# Remove files.
if [ -f "$file" ] && [ ! -L "$file" ]; then
rm -f "$file"
# Remove file symlinks.
elif [ -L "$file" ] && [ ! -d "$file" ]; then
unlink "$file" ||:
# Skip directory symlinks.
elif [ -L "$file" ] && [ -d "$file" ]; then
:
# Remove directories if empty.
elif [ -d "$file" ]; then
rmdir "$file" 2>/dev/null ||:
fi
done ||:
}
# Install the package again to fix any non-leftover files being
# removed above.
pkg_rsync -v ||:
pkg_rsync -v ||:
# Reset 'trap' to its original value. Installation is done so
# we no longer need to block 'Ctrl+C'.
trap pkg_clean EXIT INT
[ -x "$sys_db/$pkg_name/post-install" ] && {
log "[$pkg_name] Running post-install script"
"$sys_db/$pkg_name/post-install" ||:
}
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.
IFS=:; set -- $KISS_PATH; IFS=$old_ifs
# Update each repository in '$KISS_PATH'. It is assumed that
# each repository is 'git' tracked.
for repo; do
cd "$repo"
# Go to the root of the repository (if it exists).
cd "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null ||:
[ -d .git ] || {
log "[$repo] Not a git repository, skipping"
continue
}
[ "$(git remote 2>/dev/null)" ] || {
log "[$repo] No remote, skipping"
continue
}
contains "$repos" "$PWD" || {
repos="$repos $PWD "
log "[$PWD] Updating repository"
if [ -w "$PWD" ]; then
git pull
else
log "[$PWD] Need root to update"
sudo git pull
fi
}
done
log "Checking for new package versions"
# Enable globbing.
set +f
for pkg in "$sys_db/"*; do
pkg_name=${pkg##*/}
# Read version and release information from the installed packages
# and repository.
read -r db_ver db_rel < "$pkg/version"
read -r re_ver re_rel < "$(pkg_find "$pkg_name")/version"
# Compare installed packages to repository packages.
[ "$db_ver-$db_rel" != "$re_ver-$re_rel" ] && {
printf '%s\n' "$pkg_name $db_ver-$db_rel ==> $re_ver-$re_rel"
outdated="$outdated$pkg_name "
}
done
# If the package manager has an update, handle it first.
contains "$outdated" kiss && {
log "Detected package manager update" \
"The package manager will be updated first" \
"Continue?: Press Enter to continue or Ctrl+C to abort here"
# POSIX 'read' has none of the "nice" options like '-n', '-p'
# etc etc. This is the most basic usage of 'read'.
# '_' is used as 'dash' errors when no variable is given to 'read'.
read -r _ || exit
pkg_build kiss
args i kiss
log "Updated the package manager" \
"Re-run 'kiss update' to update your system"
exit 0
}
# Disable globbing.
set -f
# End here if no packages have an update.
[ "$outdated" ] || {
log "Everything is up to date"
return
}
log "Packages to update: ${outdated% }"
# Tell 'pkg_build' to always prompt before build.
pkg_update=1
# Build all packages requiring an update.
pkg_build $outdated
log "Updated all packages"
}
pkg_clean() {
# Clean up on exit or error. This removes everything related
# to the build.
[ "$KISS_DEBUG" = 1 ] && return
# Block 'Ctrl+C' while cache is being cleaned.
trap '' INT
# Remove temporary items.
rm -rf -- "$mak_dir" "$pkg_dir" "$tar_dir" "$cac_dir/$pid-m"
}
args() {
# Parse script arguments manually. POSIX 'sh' has no 'getopts'
# or equivalent built in. 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=$1
# 'dash' exits on error here if 'shift' is used and there are zero
# arguments despite trapping the error ('|| :').
shift "$(($# > 0 ? 1 : 0))"
# Parse some arguments earlier to remove the need to duplicate code.
case $action in
c|checksum|s|search)
[ "$1" ] || die "'kiss $action' requires an argument"
;;
i|install|r|remove)
[ "$1" ] || die "'kiss $action' requires an argument"
# Rerun the script with 'sudo' if the user isn't root.
# Cheeky but 'sudo' can't be used on shell functions themselves.
[ "$(id -u)" = 0 ] || {
sudo -E kiss "$action" "$@"
return
}
;;
esac
# Actions can be abbreviated to their first letter. This saves
# keystrokes once you memorize the commands.
case $action in
b|build)
# If no arguments were passed, rebuild all packages.
[ "$1" ] || {
cd "$sys_db" || die "Failed to find package db"
# Use a glob after 'cd' to generate a list of all installed
# packages based on directory names.
set +f; set -f -- *
# Undo the above 'cd' to ensure we stay in the same location.
cd - >/dev/null
}
pkg_build "$@"
;;
c|checksum)
for pkg; do pkg_lint "$pkg"; done
for pkg; do pkg_sources "$pkg"; done
for pkg; do
pkg_checksums "$pkg" > "$(pkg_find "$pkg")/checksums"
log "[$pkg] Generated checksums"
done
;;
i|install)
# Create a list of each package's dependencies.
for pkg; do
case $pkg in
*.tar.gz) deps="$deps $pkg " ;;
*) pkg_depends "$pkg"
esac
done
# Filter the list, only installing explicit packages.
# The purpose of these two loops is to order the
# argument list based on dependence.
for pkg in $deps; do
contains "$*" "$pkg" && pkg_install "$pkg"
done
;;
r|remove)
log "Removing packages"
# Create a list of each package's dependencies.
for pkg; do pkg_depends "$pkg"; done
# Reverse the list of dependencies filtering out anything
# not explicitly set for removal.
for pkg in $deps; do
contains "$*" "$pkg" && remove_pkgs="$pkg $remove_pkgs"
done
for pkg in $remove_pkgs; do
pkg_list "$pkg" >/dev/null ||
die "[$pkg] Not installed"
pkg_remove "$pkg" "${KISS_FORCE:-check}"
done
;;
l|list)
pkg_list "$@"
;;
u|update)
pkg_updates
;;
s|search)
for pkg; do pkg_find "$pkg"; done
;;
v|version|-v|--version)
printf 'kiss 0.21.0\n'
;;
h|help|-h|--help|'')
log 'kiss [b|c|i|l|r|s|u] [pkg] [pkg] [pkg]' \
'build: Build a package' \
'checksum: Generate checksums' \
'install: Install a package' \
'list: List installed packages' \
'remove: Remove a package' \
'search: Search for a package' \
'update: Check for updates'
;;
*) die "'kiss $action' is not a valid command" ;;
esac
}
main() {
# Set the location to the repository and package database.
pkg_db=var/db/kiss/installed
# The PID of the current shell process is used to isolate directories
# to each specific KISS instance. This allows multiple package manager
# instances to be run at once. Store the value in another variable so
# that it doesn't change beneath us.
pid=${KISS_PID:-$$}
# Store the original value of IFS so we can revert back to it if the
# variable is ever changed.
old_ifs=$IFS
# Catch errors and ensure that build files and directories are cleaned
# up before we die. This occurs on 'Ctrl+C' as well as success and error.
trap pkg_clean EXIT INT
# This allows for automatic setup of a KISS chroot and will
# do nothing on a normal system.
mkdir -p "${sys_db:=$KISS_ROOT/$pkg_db}" 2>/dev/null ||:
# Create the required temporary directories and set the variables
# which point to them.
mkdir -p "${cac_dir:=$KISS_ROOT${XDG_CACHE_HOME:-$HOME/.cache}/kiss}" \
"${mak_dir:=$cac_dir/build-$pid}" \
"${pkg_dir:=$cac_dir/pkg-$pid}" \
"${tar_dir:=$cac_dir/extract-$pid}" \
"${src_dir:=$cac_dir/sources}" \
"${bin_dir:=$cac_dir/bin}" \
|| die "Couldn't create cache directories"
args "$@"
}
main "$@"
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