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35a36f6143
kiss/kiss
Dylan Araps 35a36f6143 kiss: Make update actually update.
2019-07-11 09:14:17 +03:00

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#!/bin/sh -e
#
# This is a simple package manager written in POSIX 'sh' for
# KISS Linux utilizing the core UNIX utilities where needed.
#
# The script runs with 'set -e' enabled. It will exit on any
# non-zero return code. This ensures that no function continues
# if it fails at any point.
#
# Keep in mind that this involves extra code in the case where
# an error is optional or required.
#
# Where possible the package manager should "error first".
# Check things first, die if necessary and continue if all is well.
#
# The code below conforms to shellcheck's rules. However, some
# lint errors *are* disabled as they relate to unexpected
# behavior (which we do expect).
#
# KISS is available under the MIT license.
#
# - Dylan Araps.
die() {
# Print a message and exit with '1' (error).
printf '\033[31m!>\033[m %s\n' "$@" >&2
exit 1
}
log() {
# Print a message with a colorful arrow to distinguish
# from other output.
printf '\033[32m=>\033[m %s\n' "$@"
}
pkg_lint() {
# Check that each mandatory file in the package entry exists.
log "[$1]: Checking repository files..."
repo_dir=$(pkg_search "$1")
cd "$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 "[$1]: Version file not found or empty."
# Ensure that the release field in the version file is set
# to something.
read -r _ rel < version
[ "$rel" ] || die "Release field not found in version file."
# Unset this variable so it isn't used again on a failed
# source. There's no 'local' keyword in POSIX sh.
rel=
}
pkg_search() {
# 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." \
"Example: KISS_PATH=/packages/core:/packages/extra:/packages/xorg" \
"Repositories will be searched in the configured order." \
"The variable should work just like \$PATH."
# Disable globbing with 'set -f' to ensure that the unquoted
# variable doesn't expand into anything nasty.
# shellcheck disable=2086,2046
{
set -f
set -- "$1" $(IFS=:; find $KISS_PATH -maxdepth 1 -name "$1")
set +f
}
# 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.
[ -z "$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 '$1' to mimic a failed glob which indicates that
# nothing is installed.
cd "$KISS_ROOT/var/db/kiss/" 2>/dev/null ||
set -- "$KISS_ROOT/var/db/kiss/"\*
# Optional arguments can be passed to check for specific
# packages. If no arguments are passed, list all. As we
# loop over '$@', if there aren't any arguments we can
# just set the directory contents to the argument list.
[ "$1" ] || set -- *
# If the 'glob' above failed, exit early as there are no
# packages installed.
[ "$1" = "$KISS_ROOT/var/db/kiss/"\* ] && return 1
# Loop over each version file and warn if one doesn't exist.
# Also warn if a package is missing its version file.
for pkg; do
[ -d "$pkg" ] || {
log "Package '$pkg' is not installed."
return 1
}
[ -f "$pkg/version" ] || {
log "Warning: Package '$pkg' has no version file."
continue
}
read -r version release < "$pkg/version" &&
printf '%s\n' "$pkg $version-$release"
done
}
pkg_sources() {
# Download any remote package sources. The existence of local
# files is also checked.
log "[$1]: Downloading sources..."
# Store each downloaded source in named after the package it
# belongs to. This avoid conflicts between two packages having a
# source of the same name.
mkdir -p "$src_dir/$1" && cd "$src_dir/$1"
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$1")
while read -r src _; do
case $src in
# Git repository.
git:*)
git clone "${src##git:}" "$mak_dir"
;;
# Remote source.
*://*)
[ -f "${src##*/}" ] && {
log "[$1]: Found cached source '${src##*/}'."
continue
}
wget "$src" || {
rm -f "${src##*/}"
die "[$1]: Failed to download $src."
}
;;
# Local files (Any source that is non-remote is assumed to be local).
*)
[ -f "$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 "[$1]: Extracting sources..."
# Store each downloaded source in named after the package it
# belongs to. This avoid conflicts between two packages having a
# source of the same name.
mkdir -p "$mak_dir/$1" && cd "$mak_dir/$1"
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$1")
while read -r src dest; do
mkdir -p "./$dest"
case $src in
# Do nothing as git repository was downloaded to the build
# directory directly.
git:*) ;;
# Only 'tar' archives are currently supported for extraction.
# Any other file-types are simply copied to '$mak_dir' which
# allows you to extract them manually.
*://*.tar*|*://*.tgz)
tar xf "$src_dir/$1/${src##*/}" -C "./$dest" \
--strip-components 1 \
|| die "[$1]: Couldn't extract ${src##*/}."
;;
# Local files (Any source that is non-remote is assumed to be local).
*)
[ -f "$repo_dir/$src" ] ||
die "[$1]: Local file $src not found."
cp -f "$repo_dir/$src" "./$dest"
;;
esac
done < "$repo_dir/sources"
}
pkg_depends() {
# Resolve all dependencies and install them in the right order.
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$1")
# This does a depth-first search. The deepest dependencies are
# listed first and then the parents in reverse order.
if pkg_list "$1" >/dev/null; then
# If a package is already installed but 'pkg_depends' was
# given an argument, add it to the list anyway.
[ "$2" ] && missing_deps="$missing_deps $1 "
else
case $missing_deps in
# Dependency is already in list, skip it.
*" $1 "*) ;;
*)
# Recurse through the dependencies of the child
# packages. Keep doing this.
[ -f "$repo_dir/depends" ] &&
while read -r dep _; do
pkg_depends "$dep" ||:
done < "$repo_dir/depends"
# After child dependencies are added to the list,
# add the package which depends on them.
missing_deps="$missing_deps $1 "
;;
esac
fi
}
pkg_verify() {
# Verify all package checksums. This is achieved by generating
# a new set of checksums and then comparing those with the old
# set.
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$1")
# Generate a second set of checksums to compare against the
# repository's checksums for the package.
pkg_checksums .checksums "$1"
# Compare the checksums using 'cmp'.
cmp -s "$repo_dir/.checksums" "$repo_dir/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$1 "
}
# The second set of checksums use a temporary file, we need to
# delete it.
rm -f "$repo_dir/.checksums"
}
pkg_strip() {
# Strip package binaries and libraries. This saves space on the
# system as well as on the tar-balls we ship for installation.
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$1")
# Package has stripping disabled, stop here.
[ -f "$repo_dir/nostrip" ] && return
log "[$1]: Stripping binaries and libraries..."
find "$pkg_dir/$1" -type f | while read -r binary; do
case $(file -bi "$binary") in
application/x-sharedlib*|application/x-pie-executable*)
strip_opts=--strip-unneeded
;;
application/x-archive*) strip_opts=--strip-debug ;;
application/x-executable*) strip_opts=--strip-all ;;
*) continue ;;
esac
# Suppress errors here as some binaries and libraries may
# fail to strip. This is OK.
strip "$strip_opts" "$binary" 2>/dev/null ||:
done
}
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/$1"
# Find all files and directories in the package. Directories are printed
# with a trailing forward slash '/'. The list is then reversed with
# directories appearing *after* their contents.
find . -mindepth 1 -type d -exec printf '%s/\n' {} + -or -print |
sort -r | sed -e ss.ss > "$pkg_dir/$1/var/db/kiss/$1/manifest"
log "[$1]: Generated manifest."
)
pkg_tar() {
# Create a tar-ball from the built package's files.
# This tar-ball also contains the package's database entry.
log "[$1]: Creating tar-ball..."
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$1")
# Read the version information to name the package.
read -r version release < "$repo_dir/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 "[$1]: Successfully created tar-ball."
}
pkg_build() {
# Build packages and turn them into packaged tar-balls. This function
# also checks checksums, downloads sources and ensure all dependencies
# are installed.
# Resolve dependencies and generate a list.
# Send 'force' to 'pkg_depends' to always include the explicitly
# requested packages.
log "Resolving dependencies..."
for pkg; do pkg_depends "$pkg" force; done
# Store the explicit packages so we can handle them differently
# below. Dependencies are automatically installed but packages
# passed to KISS aren't.
explicit_packages=" $* "
# Disable globbing with 'set -f' to ensure that the unquoted
# variable doesn't expand into anything nasty.
# shellcheck disable=2086,2046
{
# Set the resolved dependency list as the function's arguments.
set -f
set -- $missing_deps
set +f
}
log "Building: $*."
log "Continue?: [y/n]."
# POSIX 'read' has none of the "nice" options like '-n', '-p'
# etc etc. This is the most basic usage of 'read'.
read -r REPLY
[ "$REPLY" = y ] || 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 pre-built package if it was passed to KISS
# directly.
case $explicit_packages in
*" $pkg "*)
shift
set -- "$@" "$pkg"
continue
;;
esac
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$pkg")
# Figure out the version and release.
read -r version release < "$repo_dir/version"
# Remove the current package from the package list.
shift
# Install any pre-built binaries if they exist.
[ -f "$bin_dir/$pkg#$version-$release.tar.gz" ] && {
log "[$pkg]: Found pre-built binary."
pkg_install "$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
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$pkg")
# Ensure that checksums exist prior to building the package.
[ -f "$repo_dir/checksums" ] || {
log "[$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_checkums="$no_checkums$pkg "
}
done
# Die here as packages without checksums were found above.
[ "$no_checkums" ] &&
die "Run '$kiss checksum ${no_checkums% }' to generate checksums."
for pkg; do pkg_sources "$pkg"; done
for pkg; do pkg_verify "$pkg"; done
# Die here as packages with differing checksums were found above.
[ "$mismatch" ] &&
die "Checksum mismatch with: ${mismatch% }"
# Finally build and create tarballs for all passed packages and
# dependencies.
for pkg; do
pkg_extract "$pkg"
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$pkg")
# Install built packages to a directory under the package name
# to avoid collisions with other packages.
mkdir -p "$pkg_dir/$pkg/var/db/kiss"
# Move to the build directory and call the build script.
(cd "$mak_dir/$pkg"; "$repo_dir/build" "$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/$pkg/var/db/kiss/"
log "[$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/var/db/kiss/$pkg/manifest"
pkg_strip "$pkg"
pkg_manifest "$pkg"
pkg_tar "$pkg"
# Install only dependencies of passed packages.
case $explicit_packages in
*" $pkg "*) continue ;;
*) pkg_install "$pkg" ;;
esac
done
log "Successfully built package(s)."
log "Run '$kiss i${explicit_packages% }' to install the built package(s)."
}
pkg_checksums() {
# Generate checksums for packages.
# This also downloads any remote sources.
checksum_file=$1
shift
for pkg; do
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$pkg")
while read -r src _; do
case $src in
# Git repository.
# Skip checksums on git repositories.
git:*) ;;
*)
# File is local to the package and is stored in the
# repository.
[ -f "$repo_dir/$src" ] &&
src_path=$repo_dir/${src%/*}
# File is remote and was downloaded.
[ -f "$src_dir/$pkg/${src##*/}" ] &&
src_path=$src_dir/$pkg
# Die here if source for some reason, doesn't exist.
[ "$src_path" ] ||
die "[$pkg]: Couldn't find source '$src'."
# An easy way to get 'sha256sum' to print with the 'basename'
# of files is to 'cd' to the file's directory beforehand.
(cd "$src_path" && sha256sum "${src##*/}") ||
die "[$pkg]: Failed to generate checksums."
# Unset this variable so it isn't used again on a failed
# source. There's no 'local' keyword in POSIX sh.
src_path=
;;
esac
done < "$repo_dir/sources" > "$repo_dir/$checksum_file"
log "[$pkg]: Generated/Verified checksums."
done
}
pkg_conflicts() {
# Check to see if a package conflicts with another.
# This function takes a path to a KISS tar-ball as an argument.
log "[$2]: Checking for package conflicts."
# Extract manifest from the tar-ball and only extract files entries.
tar xf "$1" -O "./var/db/kiss/$2/manifest" |
while read -r line; do
[ "${line%%*/}" ] && printf '%s\n' "$line" >> "$cac_dir/manifest-$pid"
done ||:
# Compare extracted manifest to all installed manifests.
# If there are matching lines (files) there is a package conflict.
for db in "$KISS_ROOT/var/db/kiss/"*; do
[ "$2" = "${db##*/}" ] && continue
grep -Fxf "$cac_dir/manifest-$pid" "$db/manifest" 2>/dev/null &&
die "Package '$2' conflicts with '${db##*/}'."
done
# Remove this temporary file as we no longer need it.
rm -f "$cac_dir/manifest-$pid"
}
pkg_remove() {
# Remove a package and all of its files. The '/etc' directory
# is handled differently and configuration files are *not*
# overwritten.
# Create a backup of 'rm' and 'rmdir' so they aren't removed
# during package removal. This ensures that an upgrade to 'busybox'
# or your core utilities of choice doesn't break the package manager.
cp "$(command -v rm)" "$cac_dir"
cp "$(command -v rmdir)" "$cac_dir"
# The package is not installed, don't do anything.
pkg_list "$1" >/dev/null || {
log "[$1]: Not installed."
return
}
# Make sure that nothing depends on this package.
[ "$2" = check ] && for file in "$KISS_ROOT/var/db/kiss/"*; do
# Check each depends file for the package and if it's
# a run-time dependency, append to the $required_by string.
grep -q "^$1$" "$file/depends" 2>/dev/null &&
required_by="$required_by'${file##*/}', "
done
[ "$required_by" ] &&
die "[$1]: Package is required by ${required_by%, }." \
"[$1]: Aborting here..."
# Block being able to abort the script with 'Ctrl+C' during installation.
# Removes all risk of the user aborting a package installation leaving
# an incomplete package installed.
trap '' INT
while read -r file; do
# The file is in '/etc' skip it. This prevents the package
# manager from removing user edited configuration files.
[ "${file##/etc/*}" ] || continue
if [ -d "$KISS_ROOT/$file" ]; then
"$cac_dir/rmdir" "$KISS_ROOT/$file" 2>/dev/null || continue
else
"$cac_dir/rm" -f -- "$KISS_ROOT/$file" ||
log "[$1]: Failed to remove '$file'."
fi
done < "$KISS_ROOT/var/db/kiss/$1/manifest"
# Reset 'trap' to its original value. Installation is done so
# we no longer need to block 'Ctrl+C'.
trap pkg_clean EXIT INT
log "[$1]: Removed successfully."
}
pkg_install() {
# Install a built package tar-ball.
for pkg; do
# Install can also take the full path to a tar-ball.
# We don't need to check the repository if this is the case.
if [ -f "$pkg" ] && [ -z "${pkg%%*.tar.gz}" ] ; then
tar_file=$pkg
else
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "$pkg")
# Read the version information to name the package.
read -r version release < "$repo_dir/version"
# Construct the name of the package tarball.
tar_name=$pkg\#$version-$release.tar.gz
[ -f "$bin_dir/$tar_name" ] ||
die "Package '$pkg' has not been built." \
"Run '$kiss build $pkg'."
tar_file=$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 "$tar_file" | grep -x "\./var/db/kiss/.*/version") ||
die "'${tar_file##*/}' is not a valid KISS package."
pkg_name=${pkg_name%/*}
pkg_name=${pkg_name##*/}
pkg_conflicts "$tar_file" "$pkg_name"
# Extract the tar-ball early to catch any errors before installation
# begins. The package manager uninstalls the previous package during
# an upgrade so any errors need to be caught ASAP.
tar pxf "$tar_file" -C "$tar_dir/" ||
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 "$tar_dir/var/db/kiss/$pkg_name/depends" ] &&
while read -r dep dep_type; do
[ "$dep_type" ] || pkg_list "$dep" >/dev/null ||
required_install="$required_install'$dep', "
done < "$tar_dir/var/db/kiss/$pkg_name/depends"
[ "$required_install" ] &&
die "[$1]: Package requires ${required_install%, }." \
"[$1]: Aborting here..."
# Create a backup of 'mv', 'cpio' and 'find' so they aren't removed
# during package removal. This ensures that an upgrade to 'busybox' or
# your core utilities of choice doesn't break the package manager.
cp "$(command -v mv)" "$cac_dir"
cp "$(command -v cpio)" "$cac_dir"
cp "$(command -v find)" "$cac_dir"
log "[$pkg_name]: Removing previous version of package if it exists."
pkg_remove "$pkg_name"
log "[$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
# Installation works by unpacking the tar-ball to a specified location,
# manually running 'cpio' to create each directory and finally, using
# 'mv' to move each file.
cd "$tar_dir"
# Create all of the package's directories.
"$cac_dir/find" . -type d | "$cac_dir/cpio" -mp "$KISS_ROOT/"
# Move all package files to '$KISS_ROOT'.
"$cac_dir/find" . -mindepth 1 -not -type d \
-exec "$cac_dir/mv" -n {} "$KISS_ROOT/"{} \;
# Reset 'trap' to its original value. Installation is done so
# we no longer need to block 'Ctrl+C'.
trap pkg_clean EXIT INT
# Run the post install script and suppress errors. If it exists,
# it will run, else nothing will happen.
"$KISS_ROOT/var/db/kiss/$pkg_name/post-install" 2>/dev/null ||:
log "[$pkg_name]: Installed successfully."
done
}
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.
# Disable globbing with 'set -f' to ensure that the unquoted
# variable doesn't expand into anything nasty.
# shellcheck disable=2086,2046
{
set -f
IFS=:
set -- $KISS_PATH
IFS=$old_ifs
set +f
}
log "Updating repositories..."
# Update each repository in '$KISS_PATH'. It is assumed that
# each repository is 'git' tracked.
for repo; do
log "[${repo##*/}]: Updating repository."
(cd "$repo"; git rev-parse --git-dir >/dev/null && git pull)
done
log "Checking for new package versions..."
for pkg in "$KISS_ROOT/var/db/kiss/"*; do
# Find the package's repository files. This needs to keep
# happening as we can't store this data in any kind of data
# structure.
repo_dir=$(pkg_search "${pkg##*/}")
# Read version and release information from the installed packages
# and repository.
read -r db_ver db_rel < "$pkg/version"
read -r re_ver re_rel < "$repo_dir/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"
outdated="$outdated${pkg##*/} "
}
done
# End here if no packages have an update.
[ "$outdated" ] || {
log "Everything is up to date."
return
}
# Disable globbing with 'set -f' to ensure that the unquoted
# variable doesn't expand into anything nasty.
# shellcheck disable=2086,2046
{
set -f
set -- $outdated
set +f
}
log "Packages to update: ${outdated% }."
log "Update packages?: [y/n]."
# POSIX 'read' has none of the "nice" options like '-n', '-p'
# etc etc. This is the most basic usage of 'read'.
read -r REPLY
# Update any outdated packages if 'y' was inputted above.
[ "$REPLY" = y ] && pkg_build "$@"
}
setup_caching() {
# Setup the host machine for the package manager. Create any
# directories which need to exist and set variables for easy
# access to them.
# Main cache directory (~/.cache/kiss/) typically.
mkdir -p "${cac_dir:=${XDG_CACHE_HOME:=$HOME/.cache}/kiss}" ||
die "Couldn't create cache directory ($cac_dir)."
# Build directory.
mkdir -p "${mak_dir:=$cac_dir/build-$pid}" ||
die "Couldn't create build directory ($mak_dir)."
# Package directory.
mkdir -p "${pkg_dir:=$cac_dir/pkg-$pid}" ||
die "Couldn't create package directory ($pkg_dir)."
# Tar directory.
mkdir -p "${tar_dir:=$cac_dir/extract-$pid}" ||
die "Couldn't create tar directory ($tar_dir)."
# Source directory.
mkdir -p "${src_dir:=$cac_dir/sources}" ||
die "Couldn't create source directory ($src_dir)."
# Binary directory.
mkdir -p "${bin_dir:=$cac_dir/bin}" ||
die "Couldn't create binary directory ($bin_dir)."
}
pkg_clean() {
# Clean up on exit or error. This removes everything related
# to the build.
# Remove temporary directories.
rm -rf -- "$mak_dir" "$pkg_dir" "$tar_dir"
# Remove cached commands.
rm -f -- "$cac_dir/find" "$cac_dir/mv" "$cac_dir/cpio" \
"$cac_dir/rm" "$cac_dir/rmdir"
# Remove temporary files.
rm -f "$repo_dir/.checksums"
}
root_check() {
# Ensure that the user has write permissions to '$KISS_ROOT'.
# When this variable is empty, a value of '/' is assumed.
[ -w "$KISS_ROOT/" ] || \
die "No write permissions to '${KISS_ROOT:-/}'." \
"You may need to run '$kiss' as root."
}
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.
# Actions can be abbreviated to their first letter. This saves
# keystrokes once you memorize the commands and it also has the
# side-effect of "correcting" spelling mistakes (assuming the first
# letter is right).
case $1 in
# Build the list of packages.
b*)
shift
[ "$1" ] || die "'kiss build' requires an argument."
pkg_build "$@"
;;
# Generate checksums for packages.
c*)
shift
[ "$1" ] || die "'kiss checksum' requires an argument."
for pkg; do pkg_lint "$pkg"; done
for pkg; do pkg_sources "$pkg"; done
pkg_checksums checksums "$@"
;;
# Install packages.
i*)
shift
[ "$1" ] || die "'kiss install' requires an argument."
root_check
pkg_install "$@"
;;
# Remove packages.
r*)
shift
[ "$1" ] || die "'kiss remove' requires an argument."
root_check
log "Removing packages..."
for pkg; do pkg_remove "$pkg" check; done
;;
# List installed packages.
l*)
shift
pkg_list "$@"
;;
# Upgrade packages.
u*)
pkg_updates
;;
# Print version and exit.
v*)
log "$kiss 0.2.4"
;;
# Catch all invalid arguments as well as
# any help related flags (-h, --help, help).
*)
log "$kiss [b|c|i|l|r|u] [pkg]" \
"build: Build a package." \
"checksum: Generate checksums." \
"install: Install a package (Runs build if needed)." \
"list: List packages." \
"remove: Remove a package." \
"update: Check for updates."
;;
esac
}
main() {
# Store the script name in a variable and use it everywhere
# in place of 'kiss'. This allows the script name to be changed
# easily.
kiss=${0##*/}
# 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=$$
# Store the original value of IFS so we can revert back to it if the
# variable is ever changed.
old_ifs=$IFS
# Catch errors and ensure that build files and directories are cleaned
# up before we die. This occurs on 'Ctrl+C' as well as success and error.
trap pkg_clean EXIT INT
# Create the required temporary directories and set the variables
# which point to them.
setup_caching
args "$@"
}
main "$@"
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