1350 lines
44 KiB
Bash
Executable File
1350 lines
44 KiB
Bash
Executable File
#!/bin/sh -ef
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#
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# This is a simple package manager written in POSIX 'sh' for use
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# in KISS Linux (https://getkiss.org).
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#
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# This script runs with '-ef' meaning:
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# '-e': Abort on any non-zero exit code.
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# '-f': Disable globbing globally.
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#
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# [1] Warnings related to word splitting and globbing are disabled.
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# All word splitting in this script is *safe* and intentional.
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#
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# Dylan Araps.
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log() {
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# Print a message prettily.
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#
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# All messages are printed to stderr to allow the user to hide build
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# output which is the only thing printed to stdout.
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#
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# '\033[1;32m' Set text to color '2' and make it bold.
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# '\033[m': Reset text formatting.
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# '${3:-->}': If the 3rd argument is missing, set prefix to '->'.
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# '${2:+\033[1;3Xm}': If the 2nd argument exists, set text style of '$1'.
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# '${2:+\033[m}': If the 2nd argument exists, reset text formatting.
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printf '\033[1;33m%s \033[m%b%s\033[m %s\n' \
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"${3:-->}" "${2:+\033[1;36m}" "$1" "$2" >&2
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}
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die() {
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# Print a message and exit with '1' (error).
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log "$1" "$2" "!>"
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exit 1
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}
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contains() {
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# Check if a "string list" contains a word.
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case " $1 " in *" $2 "*) return 0; esac; return 1
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}
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prompt() {
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# Ask the user for some input.
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log "Continue?: Press Enter to continue or Ctrl+C to abort here"
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# POSIX 'read' has none of the "nice" options like '-n', '-p'
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# etc etc. This is the most basic usage of 'read'.
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# '_' is used as 'dash' errors when no variable is given to 'read'.
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read -r _
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}
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root_cache() {
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# This function simply mimics a 'su' prompt to then store
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# the root password for the lifetime of the package manager.
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#
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# This function is called once when needed to cache the
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# password. The password is not accessible to any subprocesses
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# and should never leave the package manager's process.
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#
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# This behavior is needed as there is no POSIX shell method
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# of running a shell function as a different user. We can't
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# selectively lower or raise permissions in a seamless way
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# through "normal" means.
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#
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# Root is only needed when installing/removing packages whereas
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# non-root permissions are needed in countless places throughout.
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#
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# This is the only *workable* solution to 1) not run the entire
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# package manager as root and 2) avoid prompting for password
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# before, during and after builds numerous times.
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#
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# NOTE: Careful consideration has been taken in regards to this
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# change and I would have loved an inconspicuous solution
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# to this problem... but it doesn't exist.
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#
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# This change was needed as the existing behavior was not ideal
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# in any way and needed to be fixed.
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printf 'Password: '
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# Disable echoing to the terminal while the password is inputted
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# by the user. The below commands read from '/dev/tty' to ensure
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# they work when run from a subshell.
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#
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# The variable '$cached' is used to check if we've been here
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# before. We cannot check whether or not '$pass' is empty as the
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# '[' command may be external which would result in /proc leakage.
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stty -F /dev/tty -echo
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IFS= read -r pass < /dev/tty && cached=1
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stty -F /dev/tty echo
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printf '\n'
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# Validate the password now with a simple 'true' command as we
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# don't yet need to elevate permissions.
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dosu /bin/true
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}
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dosu() {
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[ "$cached" ] || root_cache
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# Declare this as a function to avoid repeating it twice
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# below. Great naming of functions all around.
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#
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# Run a command as root using the cached password. The 'su'
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# command allows you to input a password via stdin. To hide
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# the prompt, the command's output is sent to '/dev/tty'
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# and the output of 'su' is sent to '/dev/null'.
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dosudo() { su "${drop_to:-root}" -c "$* >/dev/tty" >/dev/null; }
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# The code below uses the most secure method of sending
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# data over stdin based on what is available in the system.
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#
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# The great debate: Use a heredoc or echo+pipe for password
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# input over stdin? Time to explain.
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#
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# 1) 'printf | cmd' is the most secure IF 'printf' is built
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# into the shell and NOT an external command. When 'printf'
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# is external, the password WILL be leaked over '/proc'.
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#
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# Safe shells here are anything with a builtin 'printf',
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# 'ash', 'dash', 'bash' and most other shells.
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#
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# 2) Using a heredoc is as secure as the above method (when
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# builtin) IF and only IF the user's shell implements
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# heredocs WITHOUT the use of temporary files (See bash!).
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#
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# When using heredocs and a temporary file the risk is a
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# tiny window in which the input is available inside of
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# a temporary file.
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#
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# 'ash' and 'dash' are safe here, 'bash' is not ('bash'
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# falls under (1) however).
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#
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# Which is best? (order is best to worst)
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#
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# 1) builtin 'printf'.
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# 2) heredocs with no temporary file.
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# 3) heredocs with a temporary file.
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#
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# This code below follows the above ordering when deciding
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# which method to use. The '$heredocs' variable is declared
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# in 'main()' after a check to see if 'printf' is builtin.
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if [ "$heredocs" ]; then
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dosudo "$@" <<-EOF
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$pass
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EOF
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else
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printf '%s\n' "$pass" | dosudo "$@"
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fi
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}
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pkg_lint() {
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# Check that each mandatory file in the package entry exists.
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log "$1" "Checking repository files"
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repo_dir=$(pkg_find "$1")
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cd "$repo_dir" || die "'$repo_dir' not accessible"
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[ -f sources ] || die "$1" "Sources file not found"
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[ -x build ] || die "$1" "Build file not found or not executable"
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[ -s version ] || die "$1" "Version file not found or empty"
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read -r _ release < version
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[ "$release" ] || die "Release field not found in version file"
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}
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pkg_find() {
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# Figure out which repository a package belongs to by
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# searching for directories matching the package name
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# in $KISS_PATH/*.
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[ "$KISS_PATH" ] || die "\$KISS_PATH needs to be set"
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# Turn the argument list into variables as we reset
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# the list below.
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query=$1
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match=$2
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# Find the repository containing a package.
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# Searches installed packages if the package is absent
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# from the repositories.
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# See [1] at top of script.
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# shellcheck disable=2046,2086
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set -- $(IFS=:
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find $KISS_PATH "$sys_db" -mindepth 1 -maxdepth 1 -name "$1")
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# A package may also not be found due to a repository not being
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# readable by the current user. Either way, we need to die here.
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[ "$1" ] || die "Package '$query' not in any repository"
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# Show all search results if called from 'kiss search', else
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# print only the first match.
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case $match in
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all) printf '%s\n' "$@" ;;
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*) printf '%s\n' "$1" ;;
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esac
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}
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pkg_list() {
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# List installed packages. As the format is files and
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# directories, this just involves a simple for loop and
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# file read.
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# Change directories to the database. This allows us to
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# avoid having to 'basename' each path. If this fails,
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# set '$1' to mimic a failed glob which indicates that
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# nothing is installed.
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cd "$sys_db" 2>/dev/null || set -- "$sys_db/"\*
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# Optional arguments can be passed to check for specific
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# packages. If no arguments are passed, list all. As we
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# loop over '$@', if there aren't any arguments we can
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# just set the directory contents to the argument list.
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[ "$1" ] || { set +f; set -f -- *; }
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# If the 'glob' above failed, exit early as there are no
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# packages installed.
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[ "$1" = "$sys_db/"\* ] && return 1
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# Loop over each package and print its name and version.
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for pkg; do
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[ -d "$pkg" ] || {
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log "Package '$pkg' is not installed"
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return 1
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}
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read -r version 2>/dev/null < "$pkg/version" || version=null
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printf '%s\n' "$pkg $version"
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done
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}
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pkg_sources() {
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# Download any remote package sources. The existence of local
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# files is also checked.
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log "$1" "Downloading sources"
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# Store each downloaded source in a directory named after the
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# package it belongs to. This avoid conflicts between two packages
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# having a source of the same name.
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mkdir -p "$src_dir/$1" && cd "$src_dir/$1"
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repo_dir=$(pkg_find "$1")
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while read -r src dest || [ "$src" ]; do
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# Remote source (cached).
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if [ -f "${src##*/}" ]; then
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log "$1" "Found cached source '${src##*/}'"
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# Remote git repository.
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elif [ -z "${src##git+*}" ]; then
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# This is a checksums check, skip it.
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[ "$2" ] && continue
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mkdir -p "$mak_dir/$1/$dest"
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# Run in a subshell to keep variables local.
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(
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repo_src=${src##git+}
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[ "${src##*#*}" ] && shallow=--depth=1
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cd "$mak_dir/$1/$dest" &&
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git clone "${shallow:---}" "${repo_src%#*}" .
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) || die "$1" "Failed to clone $src"
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# Remote source.
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elif [ -z "${src##*://*}" ]; then
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curl "$src" -fLo "${src##*/}" || {
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rm -f "${src##*/}"
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die "$1" "Failed to download $src"
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}
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# Local source.
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elif [ -f "$repo_dir/$src" ]; then
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log "$1" "Found local file '$src'"
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else
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die "$1" "No local file '$src'"
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fi
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done < "$repo_dir/sources"
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}
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pkg_extract() {
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# Extract all source archives to the build directory and copy over
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# any local repository files.
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log "$1" "Extracting sources"
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repo_dir=$(pkg_find "$1")
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while read -r src dest || [ "$src" ]; do
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mkdir -p "$mak_dir/$1/$dest" && cd "$mak_dir/$1/$dest"
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case $src in
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# Git repository with supplied commit hash.
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git+*\#*)
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log "Checking out ${src##*#}"
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git reset --hard "${src##*#}" ||
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die "Commit hash ${src##*#} doesn't exist"
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;;
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# Git repository.
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git+*)
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continue
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;;
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# Only 'tar' archives are currently supported for extraction.
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# Any other file-types are simply copied to '$mak_dir' which
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# allows for manual extraction.
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*://*.tar|*://*.tar.??|*://*.tar.???|*://*.tar.????|*://*.tgz)
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tar xf "$src_dir/$1/${src##*/}" --strip-components 1 ||
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die "$1" "Couldn't extract ${src##*/}"
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;;
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*)
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# Local file.
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if [ -f "$repo_dir/$src" ]; then
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cp -f "$repo_dir/$src" .
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# Remote file.
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elif [ -f "$src_dir/$1/${src##*/}" ]; then
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cp -f "$src_dir/$1/${src##*/}" .
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else
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die "$1" "Local file $src not found"
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fi
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;;
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esac
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done < "$repo_dir/sources"
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}
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pkg_depends() {
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# Resolve all dependencies and generate an ordered list.
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repo_dir=$(pkg_find "$1")
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# This does a depth-first search. The deepest dependencies are
|
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# listed first and then the parents in reverse order.
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contains "$deps" "$1" || {
|
||
# Filter out non-explicit, aleady installed dependencies.
|
||
# Only filter installed if called from 'pkg_build()'.
|
||
[ "$pkg_build" ] && [ -z "$2" ] &&
|
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(pkg_list "$1" >/dev/null) && return
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||
|
||
# Recurse through the dependencies of the child packages.
|
||
while read -r dep _ || [ "$dep" ]; do
|
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[ "${dep##\#*}" ] && pkg_depends "$dep"
|
||
done 2>/dev/null < "$repo_dir/depends" ||:
|
||
|
||
# After child dependencies are added to the list,
|
||
# add the package which depends on them.
|
||
[ "$2" = explicit ] || deps="$deps $1 "
|
||
}
|
||
}
|
||
|
||
pkg_strip() {
|
||
# Strip package binaries and libraries. This saves space on the
|
||
# system as well as on the tar-balls we ship for installation.
|
||
|
||
# Package has stripping disabled, stop here.
|
||
[ -f "$mak_dir/$pkg/nostrip" ] && return
|
||
|
||
log "$1" "Stripping binaries and libraries"
|
||
|
||
# Strip only files matching the below ELF types.
|
||
# NOTE: 'readelf' is used in place of 'file' as
|
||
# it allows us to remove 'file' from the
|
||
# core repositories altogether.
|
||
find "$pkg_dir/$1" -type f | while read -r file; do
|
||
case $(readelf -h "$file" 2>/dev/null) in
|
||
*" DYN "*) strip_opt=unneeded ;;
|
||
*" EXEC "*) strip_opt=all ;;
|
||
*" REL "*) strip_opt=debug ;;
|
||
*) continue
|
||
esac
|
||
|
||
# Suppress errors here as some binaries and libraries may
|
||
# fail to strip. This is OK.
|
||
strip "--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
|
||
|
||
# Generate a list of all installed manifests.
|
||
pkg_name=$1
|
||
set +f
|
||
set -f -- "$sys_db/"*/manifest
|
||
|
||
# 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 "$pkg_dir/$pkg_name/" -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% *}
|
||
|
||
# Figure out which package owns the file.
|
||
dep=$("$grep" -lFx "${dep##$KISS_ROOT}" "$@")
|
||
|
||
# Extract package name from 'grep' match.
|
||
dep=${dep%/*}
|
||
dep=${dep##*/}
|
||
|
||
case $dep in
|
||
# Skip listing these packages as dependencies.
|
||
musl|gcc|${PWD##*/}|"") ;;
|
||
*) printf '%s\n' "$dep" ;;
|
||
esac
|
||
done ||:
|
||
done >> depends-copy
|
||
|
||
# Remove duplicate entries from the new depends file.
|
||
# This remove duplicate lines looking *only* at the
|
||
# first column.
|
||
sort -u -k1,1 depends-copy > depends-new
|
||
|
||
# Display a 'diff' of the new dependencies agaisnt
|
||
# the old ones. '-N' treats non-existent files as blank.
|
||
diff -N depends depends-new ||:
|
||
|
||
# Do some clean up as this required a few temporary files.
|
||
mv -f depends-new depends
|
||
rm -f depends-copy
|
||
}
|
||
|
||
pkg_junk() (
|
||
# Optionally remove "junk" files from packages. This includes 'info'
|
||
# files, 'man' pages, gettext files, etc. This is configurable by the
|
||
# user.
|
||
#
|
||
# This function runs as a sub-shell to avoid having to 'cd' back to the
|
||
# prior directory before being able to continue.
|
||
cd "$pkg_dir/$1"
|
||
|
||
# Default list of directories and their contents to be removed from
|
||
# built packages. This default assumes a prefix of '/usr' though the
|
||
# user can further configure it to search whatever paths they desire.
|
||
#
|
||
# TODO: This could be nicer as could the interface to it. Something
|
||
# which allows for the addition/subtraction from the list
|
||
# would be desirable.
|
||
rm=usr/share/doc:usr/share/gtk-doc:usr/share/info:usr/share/polkit-1
|
||
rm=$rm:usr/share/gettext:usr/share/locale:usr/share/bash-completion
|
||
rm=$rm:etc/bash_completion.d:usr/share/applications
|
||
rm=$rm:usr/share/zsh/site-functions:usr/share/zsh/vendor-completions
|
||
|
||
# Split the environment variable on ':' and turn it into an argument
|
||
# list. This works exactly like '$KISS_PATH'.
|
||
#
|
||
# Files which always conflict (such as usr/lib/charset.alias) and are
|
||
# uneeded should be removed regardless.
|
||
#
|
||
# shellcheck disable=2046,2086
|
||
{ IFS=:; set -- ${KISS_RM:-$rm} usr/lib/charset.alias; IFS=$old_ifs; }
|
||
|
||
# Loop over each junk entry and delete it if it exists.
|
||
for junk; do
|
||
[ -e "./$junk" ] && rm -rf "./$junk" &&
|
||
log "${PWD##*/}" "Removed $junk"
|
||
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/$1"
|
||
|
||
# find: Print all files and directories and append '/' to directories.
|
||
# sort: Sort the output in *reverse*. Directories appear *after* their
|
||
# contents.
|
||
# sed: Remove the first character in each line (./dir -> /dir).
|
||
find . -mindepth 1 -type d -exec printf '%s/\n' {} + -or -print |
|
||
sort -r | sed ss.ss > "$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 "$1" "Successfully created tar-ball"
|
||
}
|
||
|
||
pkg_build() {
|
||
# Build packages and turn them into packaged tar-balls. This function
|
||
# also checks checksums, downloads sources and ensure all dependencies
|
||
# are installed.
|
||
pkg_build=1
|
||
|
||
log "Resolving dependencies"
|
||
|
||
for pkg; do
|
||
contains "$explicit" "$pkg" || {
|
||
pkg_depends "$pkg" explicit
|
||
|
||
# Mark packages passed on the command-line
|
||
# separately from those detected as dependencies.
|
||
explicit="$explicit $pkg "
|
||
}
|
||
done
|
||
|
||
[ "$pkg_update" ] || 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
|
||
|
||
# See [1] at top of script.
|
||
# shellcheck disable=2046,2086
|
||
set -- $deps $explicit
|
||
|
||
log "Building: $*"
|
||
|
||
# Only ask for confirmation if more than one package needs to be built.
|
||
[ $# -gt 1 ] || [ "$pkg_update" ] && {
|
||
prompt
|
||
|
||
# Prompt for password prior to the build if more than one package
|
||
# will be built and installed. No use in forcing the user to wait
|
||
# for the first password prompt (before caching) if it may take a
|
||
# long long while.
|
||
[ "$cached" ] || root_cache
|
||
}
|
||
|
||
log "Checking to see if any dependencies have already been built"
|
||
log "Installing any pre-built dependencies"
|
||
|
||
# Install any pre-built dependencies if they exist in the binary
|
||
# directory and are up to date.
|
||
for pkg; do
|
||
# Don't check for a pre-built package if it was passed
|
||
# to KISS directly.
|
||
contains "$explicit_build" "$pkg" || {
|
||
# Figure out the version and release.
|
||
read -r version release < "$(pkg_find "$pkg")/version"
|
||
|
||
# Install any pre-built binaries if they exist.
|
||
# This calls 'args' to inherit a root check
|
||
# to 'su' to elevate permissions.
|
||
[ -f "$bin_dir/$pkg#$version-$release.tar.gz" ] && {
|
||
log "$pkg" "Found pre-built binary, installing"
|
||
|
||
(KISS_FORCE=1 \
|
||
pkg_install "$bin_dir/$pkg#$version-$release.tar.gz")
|
||
|
||
# Remove the now installed package from the build
|
||
# list. No better way than using 'sed' in POSIX 'sh'.
|
||
# See [1] at top of script.
|
||
# shellcheck disable=2046,2086
|
||
set -- $(echo " $* " | sed "s/ $pkg / /")
|
||
}
|
||
}
|
||
done
|
||
|
||
for pkg; do pkg_lint "$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
|
||
|
||
# Verify all package checksums. This is achieved by generating
|
||
# a new set of checksums and then comparing those with the old
|
||
# set.
|
||
for pkg; do
|
||
pkg_checksums "$pkg" | cmp -s - "$(pkg_find "$pkg")/checksums" || {
|
||
log "$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
|
||
|
||
# Die here as packages with differing checksums were found above.
|
||
[ "$mismatch" ] && die "Checksum mismatch with: ${mismatch% }"
|
||
|
||
# Finally build and create tarballs for all passed packages and
|
||
# dependencies.
|
||
for pkg; do
|
||
log "$pkg" "Building package ($((in = in + 1))/$#)"
|
||
|
||
pkg_extract "$pkg"
|
||
repo_dir=$(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"
|
||
|
||
log "$pkg" "Starting build"
|
||
|
||
# Call the build script, log the output to the terminal
|
||
# and to a file. There's no PIPEFAIL in POSIX shelll so
|
||
# we must resort to tricks like killing the script ourselves.
|
||
{ "$repo_dir/build" "$pkg_dir/$pkg" || {
|
||
log "$pkg" "Build failed"
|
||
pkg_clean
|
||
kill 0
|
||
} } 2>&1 | tee "$log_dir/$pkg-$pid-$time"
|
||
|
||
# Delete the log file if the build succeeded to prevent
|
||
# the directory from filling very quickly with useless logs.
|
||
[ "$KISS_DEBUG" = 1 ] || rm -f "$log_dir/$pkg-$pid-$time"
|
||
|
||
# Copy the repository files to the package directory.
|
||
# This acts as the database entry.
|
||
cp -LRf "$repo_dir" "$pkg_dir/$pkg/$pkg_db/"
|
||
|
||
log "$pkg" "Successfully built package"
|
||
|
||
# Create the manifest file early and make it empty.
|
||
# This ensure that the manifest is added to the manifest...
|
||
: > "$pkg_dir/$pkg/$pkg_db/$pkg/manifest"
|
||
|
||
pkg_strip "$pkg"
|
||
pkg_fixdeps "$pkg"
|
||
pkg_junk "$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"
|
||
|
||
(KISS_FORCE=1 \
|
||
pkg_install "$bin_dir/$pkg#$version-$release.tar.gz")
|
||
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'.
|
||
# See [1] at top of script.
|
||
# shellcheck disable=2046,2086
|
||
set -- $explicit
|
||
|
||
# Only ask for confirmation if more than one package needs to be installed.
|
||
[ $# -gt 1 ] && {
|
||
log "Install built packages? [$*]"
|
||
|
||
prompt && {
|
||
args i "$@"
|
||
return
|
||
}
|
||
}
|
||
|
||
log "Run 'kiss i $*' to install the package(s)"
|
||
}
|
||
|
||
pkg_checksums() {
|
||
# Generate checksums for packages.
|
||
repo_dir=$(pkg_find "$1")
|
||
|
||
while read -r src _ || [ "$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/$1
|
||
|
||
# File is a git repository.
|
||
elif [ -z "${src##git+*}" ]; then
|
||
printf 'git %s\n' "$src"
|
||
continue
|
||
|
||
# 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"
|
||
|
||
# Filter the tarball's manifest and select only files
|
||
# and any files they resolve to on the filesystem
|
||
# (/bin/ls -> /usr/bin/ls).
|
||
tar xf "$1" -O "./$pkg_db/$2/manifest" | while read -r file; do
|
||
case $file in */) continue; esac
|
||
|
||
printf '%s/%s\n' \
|
||
"$(readlink -f "$KISS_ROOT/${file%/*}")" "${file##*/}"
|
||
done > "$cac_dir/$pid-m"
|
||
|
||
p_name=$2
|
||
|
||
# Generate a list of all installed package manifests.
|
||
set +ef
|
||
set -f -- "$sys_db"/*/manifest
|
||
|
||
# Filter the manifest list and remove the previously
|
||
# installed version of the package if it exists.
|
||
for pkg; do
|
||
i_name=${pkg%/*}
|
||
i_name=${i_name##*/}
|
||
|
||
shift
|
||
|
||
[ "$p_name" = "$i_name" ] && continue
|
||
|
||
set -- "$@" "$pkg"
|
||
done
|
||
|
||
# Use 'grep' to list matching lines between the to
|
||
# be installed package's manifest and the above filtered
|
||
# list.
|
||
[ -s "$cac_dir/$pid-m" ] && {
|
||
"$grep" -Fxf "$cac_dir/$pid-m" -- "$@" |
|
||
|
||
# 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 choices' command parses this directory and
|
||
# offers you the CHOICE of *swapping* entries in this
|
||
# directory for those on the filesystem.
|
||
#
|
||
# The choices 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 pro con || [ "$pro" ]; do
|
||
log "$p_name" "Found conflict ($con), adding choice"
|
||
|
||
# Create the "choices" directory inside of the tarball.
|
||
# This directory will store the conflicting file.
|
||
mkdir -p "$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=$(echo "$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"
|
||
|
||
# Rewrite the package's manifest to update its location
|
||
# to its new spot (and name) in the choices directory.
|
||
sed -i "s|$con|/$cho_dir/$p_name$con_name|" \
|
||
"$tar_dir/$p_name/$pkg_db/$p_name/manifest"
|
||
done
|
||
}
|
||
|
||
set -e
|
||
}
|
||
|
||
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 ${required_by%, }"
|
||
|
||
# Block being able to abort the script with 'Ctrl+C' during removal.
|
||
# Removes all risk of the user aborting a package removal leaving
|
||
# an incomplete package installed.
|
||
trap '' INT
|
||
|
||
while read -r file; do
|
||
# The file is in '/etc' skip it. This prevents the package
|
||
# manager from removing user edited configuration files.
|
||
[ "${file##/etc/*}" ] || continue
|
||
|
||
if [ -d "$KISS_ROOT/$file" ]; then
|
||
dosu rmdir "'$KISS_ROOT/$file'" 2>/dev/null || continue
|
||
else
|
||
dosu 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##*/}
|
||
|
||
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/$pkg_name/depends" ] &&
|
||
[ -z "$KISS_FORCE" ] &&
|
||
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 ${install_dep%, }"
|
||
|
||
pkg_conflicts "$tar_file" "$pkg_name"
|
||
|
||
log "$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.
|
||
old_manifest=$(cat "$sys_db/$pkg_name/manifest" 2>/dev/null ||:)
|
||
|
||
# This is repeated multiple times. Better to make it a function.
|
||
pkg_rsync() {
|
||
dosu rsync --chown=root:root --chmod=Du-s,Dg-s,Do-s \
|
||
-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" ] &&
|
||
dosu 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 "$file" ]; then
|
||
dosu rm -f "'$file'"
|
||
|
||
# Remove file symlinks.
|
||
elif [ -L "$file" ] && [ ! -d "$file" ]; then
|
||
dosu unlink "'$file'" ||:
|
||
|
||
# Skip directory symlinks.
|
||
elif [ -L "$file" ] && [ -d "$file" ]; then :
|
||
|
||
# Remove directories if empty.
|
||
elif [ -d "$file" ]; then
|
||
dosu rmdir "'$file'" 2>/dev/null ||:
|
||
fi
|
||
done ||:
|
||
}
|
||
|
||
# Install the package again to fix any non-leftover files being
|
||
# removed above.
|
||
pkg_rsync -v ||:
|
||
pkg_rsync -v ||:
|
||
|
||
# Reset 'trap' to its original value. Installation is done so
|
||
# we no longer need to block 'Ctrl+C'.
|
||
trap pkg_clean EXIT INT
|
||
|
||
if [ -x "$sys_db/$pkg_name/post-install" ]; then
|
||
log "$pkg_name" "Running post-install script"
|
||
dosu "'$sys_db/$pkg_name/post-install'" ||:
|
||
fi
|
||
|
||
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 -- $KISS_PATH; IFS=$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" " "
|
||
printf '%s\n' "Not a git repository, skipping."
|
||
continue
|
||
}
|
||
|
||
[ "$(git remote 2>/dev/null)" ] || {
|
||
log "$repo" " "
|
||
printf '%s\n' "No remote, skipping."
|
||
continue
|
||
}
|
||
|
||
contains "$repos" "$PWD" || {
|
||
repos="$repos $PWD "
|
||
|
||
# Display a tick if signing is enabled for this
|
||
# repository.
|
||
case $(git config merge.verifySignatures) in
|
||
true) signed='[[32;1msigned ✓[m]' ;;
|
||
*) signed= ;;
|
||
esac
|
||
|
||
log "$PWD" "$signed "
|
||
|
||
if [ -w "$PWD" ]; then
|
||
git fetch
|
||
git merge
|
||
|
||
else
|
||
log "$PWD" "Need root to update"
|
||
|
||
# Find out the owner of the repository and spawn
|
||
# git as this user below.
|
||
#
|
||
# This prevents 'git' from changing the original
|
||
# ownership of files and directories in the rare
|
||
# case that the repository is owned by a 3rd user.
|
||
(drop_to=$(stat -c %U "$PWD")
|
||
|
||
dosu git fetch
|
||
dosu git merge)
|
||
fi
|
||
}
|
||
done
|
||
|
||
log "Checking for new package versions"
|
||
|
||
# Enable globbing.
|
||
set +f
|
||
|
||
for pkg in "$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 "$outdated" kiss && {
|
||
log "Detected package manager update"
|
||
log "The package manager will be updated first"
|
||
|
||
prompt
|
||
|
||
pkg_build kiss
|
||
pkg_install kiss
|
||
|
||
log "Updated the package manager"
|
||
log "Re-run 'kiss update' to update your system"
|
||
|
||
exit 0
|
||
}
|
||
|
||
# Disable globbing.
|
||
set -f
|
||
|
||
# End here if no packages have an update.
|
||
[ "$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.
|
||
# See [1] at top of script.
|
||
# shellcheck disable=2046,2086
|
||
pkg_build $outdated
|
||
|
||
log "Updated all packages"
|
||
}
|
||
|
||
pkg_clean() {
|
||
# Clean up on exit or error. This removes everything related
|
||
# to the build.
|
||
stty -F /dev/tty echo 2>/dev/null
|
||
|
||
# Block 'Ctrl+C' while cache is being cleaned.
|
||
trap '' INT
|
||
|
||
# Remove temporary items.
|
||
rm -rf -- "$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=$1
|
||
|
||
# 'dash' exits on error here if 'shift' is used and there are zero
|
||
# arguments despite trapping the error ('|| :').
|
||
shift "$(($# > 0 ? 1 : 0))"
|
||
|
||
# Unless this is a search, sanitize the user's input. The call to
|
||
# 'pkg_find()' supports basic globbing, ensure input doesn't expand
|
||
# to anything except for when this behavior is needed.
|
||
#
|
||
# This handles the globbing characters '*', '!', '[' and ']' as per:
|
||
# https://pubs.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
|
||
[ "$action" != search ] && [ "$action" != s ] &&
|
||
case $@ in
|
||
*'*'*|*'!'*|*'['*|*']'*)
|
||
die "Arguments contain invalid characters: '!*[]'"
|
||
;;
|
||
esac
|
||
|
||
# Parse some arguments earlier to remove the need to duplicate code.
|
||
case $action in
|
||
c|checksum|s|search|i|install|r|remove)
|
||
[ "$1" ] || die "'kiss $action' requires an argument"
|
||
;;
|
||
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
|
||
# Check to see if the package is installed. This
|
||
# will exit with an error if it is not.
|
||
pkg_list "$1" >/dev/null
|
||
|
||
[ "$2" ] || die "No alternative chosen"
|
||
else
|
||
log "Alternatives:"
|
||
|
||
# Go to the choices directory and hide errors
|
||
# as there is nothing to list if the directory
|
||
# doesn't exist.
|
||
cd "$sys_db/../choices" 2>/dev/null
|
||
set +f
|
||
|
||
# Go over each alternative and format the file
|
||
# name for listing. (pkg_name>usr>bin>ls)
|
||
for pkg in *; do
|
||
[ -f "$pkg" ] &&
|
||
printf '%s\n' "$pkg" | sed 's|>|: /|;s|>|/|g'
|
||
done
|
||
fi
|
||
;;
|
||
|
||
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 "$pkg" c; done
|
||
for pkg; do
|
||
pkg_checksums "$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" install
|
||
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" remove; 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" all; done
|
||
;;
|
||
|
||
v|version|-v|--version)
|
||
log kiss 0.80.0
|
||
;;
|
||
|
||
h|help|-h|--help|'')
|
||
log 'kiss [a|b|c|i|l|r|s|u|v] [pkg] [pkg] [pkg]'
|
||
log 'alternatives: List and swap to alternatives'
|
||
log 'build: Build a package'
|
||
log 'checksum: Generate checksums'
|
||
log 'install: Install a package'
|
||
log 'list: List installed packages'
|
||
log 'remove: Remove a package'
|
||
log 'search: Search for a package'
|
||
log 'update: Check for updates'
|
||
log 'version: Package manager version'
|
||
;;
|
||
|
||
*) die "'kiss $action' is not a valid command" ;;
|
||
esac
|
||
}
|
||
|
||
main() {
|
||
# Ensure that debug mode is never enabled to prevent internal
|
||
# package manager information from leaking to stdout.
|
||
set +x
|
||
|
||
# Prevent the package manager from running as root. The package
|
||
# manager will elevate permissions where needed.
|
||
[ "$(id -u)" != 0 ] || die "kiss must be run as a normal user"
|
||
|
||
# Use the most secure method of sending data over stdin based on
|
||
# whether or not the 'printf' command is built into the shell.
|
||
[ "$(command -v printf)" = printf ] || heredocs=1
|
||
|
||
# Set the location to the repository and package database.
|
||
pkg_db=var/db/kiss/installed
|
||
|
||
# The PID of the current shell process is used to isolate directories
|
||
# to each specific KISS instance. This allows multiple package manager
|
||
# instances to be run at once. Store the value in another variable so
|
||
# that it doesn't change beneath us.
|
||
pid=${KISS_PID:-$$}
|
||
|
||
# Store the original value of IFS so we can revert back to it if the
|
||
# variable is ever changed.
|
||
old_ifs=$IFS
|
||
|
||
# Catch errors and ensure that build files and directories are cleaned
|
||
# up before we die. This occurs on 'Ctrl+C' as well as success and error.
|
||
trap pkg_clean EXIT INT
|
||
|
||
# Prefer GNU grep if installed as it is much much faster than busybox's
|
||
# implementation. Very much worth it if you value performance over
|
||
# POSIX correctness.
|
||
grep=$(command -v ggrep) || grep='grep'
|
||
|
||
# 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=$(date '+%d-%m-%Y-%H:%M')
|
||
|
||
# This allows for automatic setup of a KISS chroot and will
|
||
# do nothing on a normal system.
|
||
mkdir -p "${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:=$cac_dir/sources}" \
|
||
"${log_dir:=$cac_dir/logs}" \
|
||
"${bin_dir:=$cac_dir/bin}" \
|
||
|| die "Couldn't create cache directories"
|
||
|
||
args "$@"
|
||
}
|
||
|
||
main "$@"
|