diff options
Diffstat (limited to 'lib/cpt-pkg')
| -rw-r--r-- | lib/cpt-pkg | 879 |
1 files changed, 879 insertions, 0 deletions
diff --git a/lib/cpt-pkg b/lib/cpt-pkg new file mode 100644 index 0000000..bfaa428 --- /dev/null +++ b/lib/cpt-pkg @@ -0,0 +1,879 @@ +# Package functions +# shellcheck source=lib-cpt + +run_hook() { + # Store the CPT_HOOK variable so that we can revert it if it is changed. + oldCPT_HOOK=$CPT_HOOK + + # If a fourth parameter 'root' is specified, source the hook from a + # predefined location to avoid privilige escalation through user scripts. + [ "$4" ] && CPT_HOOK=$CPT_ROOT/etc/cpt-hook + + [ -f "$CPT_HOOK" ] || { CPT_HOOK=$oldCPT_HOOK; return 0 ;} + + [ "$2" ] && log "$2" "Running $1 hook" + + TYPE=${1:-null} PKG=${2:-null} DEST=${3:-null} . "$CPT_HOOK" + CPT_HOOK=$oldCPT_HOOK +} + +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 ] || warn "$1" "Sources file not found" + [ -x build ] || die "$1" "Build file not found or not executable" + [ -s version ] || die "$1" "Version file not found or empty" + + read -r _ release 2>/dev/null < version || die "Version file not found" + [ "$release" ] || die "Release field not found in version file" + + [ "$2" ] || [ -f checksums ] || die "$pkg" "Checksums are missing" +} + +pkg_cache() { + read -r version release 2>/dev/null < "$(pkg_find "$1")/version" + + # Initially assume that the package tarball is built with the CPT_COMPRESS + # value. + if [ -f "$bin_dir/$1#$version-$release.tar.$CPT_COMPRESS" ]; then + tar_file="$bin_dir/$1#$version-$release.tar.$CPT_COMPRESS" + else + set +f; set -f -- "$bin_dir/$1#$version-$release.tar."* + tar_file=$1 + fi + + [ -f "$tar_file" ] +} + +pkg_strip() { + # Strip package binaries and libraries. This saves space on the + # system as well as on the tarballs we ship for installation. + + # Package has stripping disabled, stop here. + [ -f "$mak_dir/$pkg/nostrip" ] && return + + log "$1" "Stripping binaries and libraries" + + find "$pkg_dir/$1" -type f | while read -r file; do + case $(od -A o -t c -N 18 "$file") in + # REL (object files (.o), static libraries (.a)). + *177*E*L*F*0000020\ 001\ *|*\!*\<*a*r*c*h*\>*) + strip -g -R .comment -R .note "$file" + ;; + + # EXEC (static binaries). + # DYN (shared libraries, dynamic binaries). + # Shared libraries keep global symbols in a separate ELF section + # called '.dynsym'. '--strip-all/-s' does not touch the dynamic + # symbol entries which makes this safe to do. + *177*E*L*F*0000020\ 00[23]\ *) + strip -s -R .comment -R .note "$file" + ;; + esac + done 2>/dev/null ||: +} + +pkg_manifest() ( + # Generate the package's manifest file. This is a list of each file + # and directory inside the package. The file is used when uninstalling + # packages, checking for package conflicts and for general debugging. + log "$1" "Generating manifest" + + # This function runs as a sub-shell to avoid having to 'cd' back to the + # prior directory before being able to continue. + cd "${2:-$pkg_dir}/$1" + + # find: Print all files and directories and append '/' to directories. + # sort: Sort the output in *reverse*. Directories appear *after* their + # contents. + # sed: Remove the first character in each line (./dir -> /dir) and + # remove all lines which only contain '.'. + find . -type d -exec printf '%s/\n' {} + -o -print | + sort -r | sed '/^\.\/$/d;ss.ss' > "${2:-$pkg_dir}/$1/$pkg_db/$1/manifest" +) + +pkg_etcsums() ( + # This function runs as a sub-shell to avoid having to 'cd' back to the + # prior directory before being able to continue. + cd "$pkg_dir/$1/etc" 2>/dev/null || return 0; cd .. + + # Generate checksums for each configuration file in the package's + # /etc/ directory for use in "smart" handling of these files. + log "$1" "Generating etcsums" + + + find etc -type f | while read -r file; do + sh256 "$file" + done > "$pkg_dir/$1/$pkg_db/$1/etcsums" +) + +pkg_tar() { + # Create a tarball from the built package's files. + # This tarball also contains the package's database entry. + log "$1" "Creating tarball" + + # Read the version information to name the package. + read -r version release < "$(pkg_find "$1")/version" + + # Create a tarball from the contents of the built package. + "$tar" cf - -C "$pkg_dir/$1" . | + case $CPT_COMPRESS in + bz2) bzip2 -z ;; + xz) xz -zT 0 ;; + gz) gzip -6 ;; + zst) zstd -3 ;; + *) gzip -6 ;; # Fallback to gzip + esac \ + > "$bin_dir/$1#$version-$release.tar.$CPT_COMPRESS" + + log "$1" "Successfully created tarball" + + run_hook post-package "$1" "$bin_dir/$1#$version-$release.tar.$CPT_COMPRESS" +} + +pkg_build() { + # Build packages and turn them into packaged tarballs. 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=$explicit + + # If an explicit package is a dependency of another explicit + # package, remove it from the explicit list as it needs to be + # installed as a dependency. + # shellcheck disable=2086,2031 + for pkg do + contains "$deps" "$pkg" && explicit=$(pop "$pkg" from $explicit) + done + + # See [1] at top of script. + # shellcheck disable=2046,2086,2031 + set -- $deps $explicit + + log "Building: $*" + + # Only ask for confirmation if more than one package needs to be built. + [ $# -gt 1 ] || [ "$pkg_update" ] && { prompt || exit 0 ;} + + log "Checking for pre-built dependencies" + + for pkg do pkg_lint "$pkg"; done + + # Install any pre-built dependencies if they exist in the binary + # directory and are up to date. + for pkg do ! contains "$explicit_build" "$pkg" && pkg_cache "$pkg" && { + log "$pkg" "Found pre-built binary, installing" + (CPT_FORCE=1 cpt-install "$tar_file") + + # Remove the now installed package from the build list. + # See [1] at top of script. + # shellcheck disable=2046,2086 + set -- $(pop "$pkg" from "$@") + } done + + for pkg do pkg_sources "$pkg"; done + + pkg_verify "$@" + + # Finally build and create tarballs for all passed packages and + # dependencies. + for pkg do + log "$pkg" "Building package ($((in = in + 1))/$#)" + + pkg_extract "$pkg" + repo_dir=$(pkg_find "$pkg") + + read -r build_version _ < "$repo_dir/version" + + # Copy the build file to the build directory to users to modify it + # temporarily at runtime. + cp -f "$repo_dir/build" "$mak_dir/$pkg/.build.cpt" + + # Install built packages to a directory under the package name + # to avoid collisions with other packages. + mkdir -p "$pkg_dir/$pkg/$pkg_db" + + # Move to the build directory. + cd "$mak_dir/$pkg" + + log "$pkg" "Starting build" + + run_hook pre-build "$pkg" "$pkg_dir/$pkg" + + # Notify the user if the build script is changed during the pre-build + # hook. + diff -q "$repo_dir/build" .build.cpt || + log "$pkg" "Executing the modified build file" + + # 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. + { ./.build.cpt "$pkg_dir/$pkg" "$build_version" "$sys_arch" 2>&1 || { + log "$pkg" "Build failed" + log "$pkg" "Log stored to $log_dir/$pkg-$time-$pid" + run_hook build-fail "$pkg" "$pkg_dir/$pkg" + pkg_clean + kill 0 + } } | tee "$log_dir/$pkg-$time-$pid" + + # Run the test script if it exists and the user wants to run tests. This + # is turned off by default. + [ -x "$repo_dir/test" ] && [ "$CPT_TEST" = 1 ] && { + run_hook pre-test "$pkg" "$pkg_dir/$pkg" + log "$pkg" "Running tests" + "$repo_dir/test" "$pkg_dir/$pkg" "$build_version" "$sys_arch" 2>&1 || { + log "$pkg" "Test failed" + log "$pkg" "Log stored to $log_dir/$pkg-$time-$pid" + run_hook test-fail "$pkg" "$pkg_dir/$pkg" + pkg_clean + kill 0 + } } | tee -a "$log_dir/$pkg-$time-$pid" + + # Delete the log file if the build succeeded to prevent + # the directory from filling very quickly with useless logs. + [ "$CPT_KEEPLOG" = 1 ] || rm -f "$log_dir/$pkg-$time-$pid" + + # Copy the repository files to the package directory. + # This acts as the database entry. + cp -LRf "$repo_dir" "$pkg_dir/$pkg/$pkg_db/" + + # Copy the modified build file to the package directory. + pkg_build="$pkg_dir/$pkg/$pkg_db/$pkg/build" + diff -U 3 "$pkg_build" .build.cpt > "$pkg_build.diff" && + rm -f "$pkg_build.diff" + + # We don't want the package manager to track 'dir' pages of the info + # directory. We don't want every single package to create their own dir + # files either. + rm -f "$pkg_dir/$pkg/usr/share/info/dir" + + # We never ever want this. Let's end the endless conflicts + # and remove it. + find "$pkg_dir/$pkg" -name charset.alias -exec rm -f {} + + + # Remove libtool's '*.la' library files. This removes cross-build + # system conflicts that may arise. Build-systems change, libtool + # is getting deprecated, we don't want a package that depends on + # some package's '.la' files. + find "$pkg_dir/$pkg" -name '*.la' -exec rm -f {} + + + log "$pkg" "Successfully built package" + + run_hook post-build "$pkg" "$pkg_dir/$pkg" + + # Create the manifest file early and make it empty. + # This ensures that the manifest is added to the manifest. + : > "$pkg_dir/$pkg/$pkg_db/$pkg/manifest" + + # If the package contains '/etc', add a file called + # 'etcsums' to the manifest. See comment directly above. + [ -d "$pkg_dir/$pkg/etc" ] && + : > "$pkg_dir/$pkg/$pkg_db/$pkg/etcsums" + + pkg_strip "$pkg" + pkg_manifest "$pkg" + pkg_fix_deps "$pkg" + pkg_manifest "$pkg" + pkg_etcsums "$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 "$pkg" "Needed as a dependency or has an update, installing" + + (CPT_FORCE=1 cpt-install "$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'. + # 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. + [ $# -gt 1 ] && prompt "Install built packages? [$*]" && { + cpt-install "$@" + return + } + + log "Run 'cpt i $*' to install the package(s)" +} + +pkg_checksums() { + # Generate checksums for packages. + repo_dir=$(pkg_find "$1") + + [ -f "$repo_dir/sources" ] || return 0 + + while read -r src _ || [ "$src" ]; do + # Comment. + if [ -z "${src##\#*}" ]; then + continue + + # File is local to the package. + elif [ -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 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 "$src_path" && sh256 "${src##*/}") || + die "$1" "Failed to generate checksums" + done < "$repo_dir/sources" +} + +pkg_verify() { + # Verify all package checksums. This is achieved by generating a new set of + # checksums and then comparing those with the old set. + verify_cmd="NR==FNR{a[\$1];next}/^git .*/{next}!((\$1)in a){exit 1}" + + for pkg; do + repo_dir=$(pkg_find "$pkg") + [ -f "$repo_dir/sources" ] || continue + + pkg_checksums "$pkg" | awk "$verify_cmd" - "$repo_dir/checksums" || { + log "$pkg" "Checksum mismatch" + + # Instead of dying above, log it to the terminal. Also define a + # variable so we *can* die after all checksum files have been + # checked. + mismatch="$mismatch$pkg " + } done + + [ -z "$mismatch" ] || die "Checksum mismatch with: ${mismatch% }" +} + +pkg_conflicts() { + # Check to see if a package conflicts with another. + log "$1" "Checking for package conflicts" + + # Filter the tarball's manifest and select only files + # and any files they resolve to on the filesystem + # (/bin/ls -> /usr/bin/ls). + while read -r file; do + case $file in */) continue; esac + + # Use $CPT_ROOT in filename so that we follow its symlinks. + file=$CPT_ROOT/${file#/} + + # We will only follow the symlinks of the directories, so we reserve the + # directory name in this 'dirname' value. If we cannot find it in the + # system, we don't need to make this much more complex by trying so hard + # to find it. Simply use the original directory name. + dirname="$(_readlinkf "${file%/*}" 2>/dev/null)" || + dirname="${file%/*}" + + + # Combine the dirname and file values, and print them into the + # temporary manifest to be parsed. + printf '%s/%s\n' "${dirname#$CPT_ROOT}" "${file##*/}" + + done < "$tar_dir/$1/$pkg_db/$1/manifest" > "$CPT_TMPDIR/$pid/manifest" + + p_name=$1 + + # Generate a list of all installed package manifests + # and remove the current package from the list. + # shellcheck disable=2046,2086 + set -- $(set +f; pop "$sys_db/$p_name/manifest" from "$sys_db"/*/manifest) + + [ -s "$CPT_TMPDIR/$pid/manifest" ] || return 0 + + # In rare cases where the system only has one package installed + # and you are reinstalling that package, grep will try to read from + # standard input if we continue here. + # + # Also, if we don't have any packages installed grep will give an + # error. This will not cause the installation to fail, but we don't + # need to check for conflicts if that's the case anyway. If we have + # only zero packages or one package, just stop wasting time and continue + # with the installation. + [ "$1" ] && [ -f "$1" ] || return 0 + + # Store the list of found conflicts in a file as we will be using the + # information multiple times. Storing it in the cache dir allows us + # to be lazy as they'll be automatically removed on script end. + "$grep" -Fxf "$CPT_TMPDIR/$pid/manifest" -- "$@" > "$CPT_TMPDIR/$pid/conflict" ||: + + + # Enable alternatives automatically if it is safe to do so. + # This checks to see that the package that is about to be installed + # doesn't overwrite anything it shouldn't in '/var/db/cpt/installed'. + "$grep" -q ":/var/db/cpt/installed/" "$CPT_TMPDIR/$pid/conflict" || + choice_auto=1 + + # Use 'grep' to list matching lines between the to + # be installed package's manifest and the above filtered + # list. + if [ "$CPT_CHOICE" != 0 ] && [ "$choice_auto" = 1 ]; then + + # This is a novel way of offering an "alternatives" system. + # It is entirely dynamic and all "choices" are created and + # destroyed on the fly. + # + # When a conflict is found between two packages, the file + # is moved to a directory called "choices" and its name + # changed to store its parent package and its intended + # location. + # + # The package's manifest is then updated to reflect this + # new location. + # + # The 'cpt 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 _ con; do + printf '%s\n' "Found conflict $con" + + # Create the "choices" directory inside of the tarball. + # This directory will store the conflicting file. + mkdir -p "$tar_dir/$p_name/${cho_dir:=var/db/cpt/choices}" + + # Construct the file name of the "db" entry of the + # conflicting file. (pkg_name>usr>bin>ls) + con_name=$(printf %s "$con" | sed 's|/|>|g') + + # Move the conflicting file to the choices directory + # and name it according to the format above. + mv -f "$tar_dir/$p_name/$con" \ + "$tar_dir/$p_name/$cho_dir/$p_name$con_name" 2>/dev/null || { + log "File must be in ${con%/*} and not a symlink to it" + log "This usually occurs when a binary is installed to" + log "/sbin instead of /usr/bin (example)" + log "Before this package can be used as an alternative," + log "this must be fixed in $p_name. Contact the maintainer" + die "by checking 'git log' or by running 'cpt-maintainer'" + } + done < "$CPT_TMPDIR/$pid/conflict" + + # Rewrite the package's manifest to update its location + # to its new spot (and name) in the choices directory. + pkg_manifest "$p_name" "$tar_dir" 2>/dev/null + + elif [ -s "$CPT_TMPDIR/$pid/conflict" ]; then + log "Package '$p_name' conflicts with another package" "" "!>" + log "Run 'CPT_CHOICE=1 cpt i $p_name' to add conflicts" "" "!>" + die "as alternatives." + fi +} + +pkg_swap() { + # Swap between package alternatives. + pkg_list "$1" >/dev/null + + alt=$(printf %s "$1$2" | sed 's|/|>|g') + cd "$sys_db/../choices" + + [ -f "$alt" ] || [ -h "$alt" ] || + die "Alternative '$1 $2' doesn't exist" + + if [ -f "$2" ]; then + # Figure out which package owns the file we are going to swap for + # another package's. + # + # Print the full path to the manifest file which contains + # the match to our search. + + pkg_owns=$(pkg_owner -lFx "$2") || + die "File '$2' exists on filesystem but isn't owned" + + log "Swapping '$2' from '$pkg_owns' to '$1'" + + # Convert the current owner to an alternative and rewrite + # its manifest file to reflect this. We then resort this file + # so no issues arise when removing packages. + cp -Pf "$CPT_ROOT/$2" "$pkg_owns>${alt#*>}" + sed "s#^$(regesc "$2")\$#${PWD#$CPT_ROOT}/$pkg_owns>${alt#*>}#" \ + "../installed/$pkg_owns/manifest" | + sort -r -o "../installed/$pkg_owns/manifest" + fi + + # Convert the desired alternative to a real file and rewrite + # the manifest file to reflect this. The reverse of above. + mv -f "$alt" "$CPT_ROOT/$2" + sed "s#^${PWD#$CPT_ROOT}/$(regesc "$alt")\$#$2#" "../installed/$1/manifest" | + sort -r -o "../installed/$1/manifest" +} + +pkg_etc() { + [ -d "$tar_dir/$pkg_name/etc" ] || return 0 + + (cd "$tar_dir/$pkg_name" + + # Create all directories beforehand. + find etc -type d | while read -r dir; do + mkdir -p "$CPT_ROOT/$dir" + done + + # Handle files in /etc/ based on a 3-way checksum check. + find etc ! -type d | while read -r file; do + { sum_new=$(sh256 "$file") + sum_sys=$(cd "$CPT_ROOT/"; sh256 "$file") + sum_old=$("$grep" "$file$" "$mak_dir/c"); } 2>/dev/null ||: + + log "$pkg_name" "Doing 3-way handshake for $file" + printf '%s\n' "Previous: ${sum_old:-null}" + printf '%s\n' "System: ${sum_sys:-null}" + printf '%s\n' "New: ${sum_new:-null}" + + # Use a case statement to easily compare three strings at + # the same time. Pretty nifty. + case ${sum_old:-null}${sum_sys:-null}${sum_new} in + # old = Y, sys = X, new = Y + "${sum_new}${sum_sys}${sum_old}") + log "Skipping $file" + continue + ;; + + # old = X, sys = X, new = X + # old = X, sys = Y, new = Y + # old = X, sys = X, new = Y + "${sum_old}${sum_old}${sum_old}"|\ + "${sum_old:-null}${sum_sys}${sum_sys}"|\ + "${sum_sys}${sum_old}"*) + log "Installing $file" + new= + ;; + + # All other cases. + *) + warn "$pkg_name" "saving /$file as /$file.new" "->" + new=.new + ;; + esac + + cp -fPp "$file" "$CPT_ROOT/${file}${new}" + chown root:root "$CPT_ROOT/${file}${new}" 2>/dev/null + done) ||: +} + +pkg_remove() { + # Remove a package and all of its files. The '/etc' directory + # is handled differently and configuration files are *not* + # overwritten. + pkg_list "$1" >/dev/null || return + + # Make sure that nothing depends on this package. + [ "$CPT_FORCE" = 1 ] || { + log "$1" "Checking for reverse dependencies" + + (cd "$sys_db"; set +f; grep -lFx "$1" -- */depends) && + die "$1" "Can't remove package, others depend on it" + } + # Block being able to abort the script with 'Ctrl+C' during removal. + # Removes all risk of the user aborting a package removal leaving + # an incomplete package installed. + trap_set block + + if [ -x "$sys_db/$1/pre-remove" ]; then + log "$1" "Running pre-remove script" + "$sys_db/$1/pre-remove" ||: + fi + + # Create a temporary list of all directories, so we don't accidentally + # remove anything from packages that create empty directories for a + # purpose (such as baselayout). + manifest_list="$(set +f; pop "$sys_db/$1/manifest" from "$sys_db/"*/manifest)" + # shellcheck disable=2086 + [ "$manifest_list" ] && grep -h '/$' $manifest_list | sort -ur > "$mak_dir/dirs" + + run_hook pre-remove "$1" "$sys_db/$1" root + + while read -r file; do + # The file is in '/etc' skip it. This prevents the package + # manager from removing user edited configuration files. + [ "${file##/etc/*}" ] || continue + + if [ -d "$CPT_ROOT/$file" ]; then + "$grep" -Fxq "$file" "$mak_dir/dirs" 2>/dev/null && continue + rmdir "$CPT_ROOT/$file" 2>/dev/null || continue + else + rm -f "$CPT_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_set cleanup + + run_hook post-remove "$1" "$CPT_ROOT/" root + + log "$1" "Removed successfully" +} + +pkg_install() { + # Install a built package tarball. + + # Install can also take the full path to a tarball. + # We don't need to check the repository if this is the case. + if [ -f "$1" ] && [ -z "${1%%*.tar*}" ] ; then + tar_file=$1 + pkg_name=${1##*/} + pkg_name=${pkg_name%#*} + + else + pkg_cache "$1" || + die "package has not been built, run 'cpt b pkg'" + + pkg_name=$1 + fi + + mkdir -p "$tar_dir/$pkg_name" + log "$pkg_name" "Extracting $tar_file" + + # Extract the tarball to catch any errors before installation begins. + decompress "$tar_file" | "$tar" xf - -C "$tar_dir/$pkg_name" + + [ -f "$tar_dir/$pkg_name/$pkg_db/$pkg_name/manifest" ] || + die "'${tar_file##*/}' is not a valid CPT package" + + # Ensure that the tarball's manifest is correct by checking that + # each file and directory inside of it actually exists. + [ "$CPT_FORCE" != 1 ] && log "$pkg_name" "Checking package manifest" && + while read -r line; do + # Skip symbolic links + [ -h "$tar_dir/$pkg_name/$line" ] || + [ -e "$tar_dir/$pkg_name/$line" ] || { + log "File $line missing from tarball but mentioned in manifest" "" "!>" + TARBALL_FAIL=1 + } + done < "$tar_dir/$pkg_name/$pkg_db/$pkg_name/manifest" + [ "$TARBALL_FAIL" ] && { + log "You can still install this package by setting CPT_FORCE variable" + die "$pkg_name" "Missing files in manifest" + } + + log "$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" ] && + [ "$CPT_FORCE" != 1 ] && + while read -r dep dep_type || [ "$dep" ]; do + [ "${dep##\#*}" ] || continue + [ "$dep_type" ] || pkg_list "$dep" >/dev/null || + install_dep="$install_dep'$dep', " + done < "$tar_dir/$pkg_name/$pkg_db/$pkg_name/depends" + + [ "$install_dep" ] && die "$1" "Package requires ${install_dep%, }" + + run_hook pre-install "$pkg_name" "$tar_dir/$pkg_name" root + + pkg_conflicts "$pkg_name" + + log "$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_set block + + # If the package is already installed (and this is an upgrade) make a + # backup of the manifest and etcsums files. + cp -f "$sys_db/$pkg_name/manifest" "$mak_dir/m" 2>/dev/null ||: + cp -f "$sys_db/$pkg_name/etcsums" "$mak_dir/c" 2>/dev/null ||: + + # This is repeated multiple times. Better to make it a function. + pkg_rsync() { + rsync "--chown=$USER:$USER" --chmod=Du-s,Dg-s,Do-s \ + -WhHKa --no-compress --exclude /etc "${1:---}" \ + "$tar_dir/$pkg_name/" "$CPT_ROOT/" + } + + # Install the package by using 'rsync' and overwrite any existing files + # (excluding '/etc/'). + pkg_rsync --info=progress2 + pkg_etc + + # Remove any leftover files if this is an upgrade. + "$grep" -vFxf "$sys_db/$pkg_name/manifest" "$mak_dir/m" 2>/dev/null | + + while read -r file; do + file=$CPT_ROOT/$file + + # Skip deleting some leftover files. + case $file in /etc/*) continue; esac + + # Remove files. + if [ -f "$file" ] && [ ! -L "$file" ]; then + rm -f "$file" + + # Remove file symlinks. + elif [ -h "$file" ] && [ ! -d "$file" ]; then + unlink "$file" ||: + + # Skip directory symlinks. + elif [ -h "$file" ] && [ -d "$file" ]; then : + + # Remove directories if empty. + elif [ -d "$file" ]; then + rmdir "$file" 2>/dev/null ||: + fi + done ||: + + log "$pkg_name" "Verifying installation" + { pkg_rsync; pkg_rsync; } ||: + + # Reset 'trap' to its original value. Installation is done so + # we no longer need to block 'Ctrl+C'. + trap_set cleanup + + if [ -x "$sys_db/$pkg_name/post-install" ]; then + log "$pkg_name" "Running post-install script" + "$sys_db/$pkg_name/post-install" ||: + fi + + run_hook post-install "$pkg_name" "$sys_db/$pkg_name" root + + log "$pkg_name" "Installed successfully" +} + +pkg_updates(){ + # Check all installed packages for updates. So long as the installed + # version and the version in the repositories differ, it's considered + # an update. + [ "$CPT_FETCH" = 0 ] || pkg_fetch + + log "Checking for new package versions" + + 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 + + set -f + + # If the download option is specified only download the outdated packages + # and exit. + # shellcheck disable=2154 + [ "$download_only" = 1 ] && { + log "Only sources for the packages will be acquired" + prompt || exit 0 + + for pkg in $outdated; do + pkg_sources "$pkg" + done + + exit 0 + } + + contains "$outdated" cpt && { + log "Detected package manager update" + log "The package manager will be updated first" + + prompt || exit 0 + + pkg_build cpt + cpt-install cpt + + log "Updated the package manager" + log "Re-run 'cpt update' to update your system" + + exit 0 + } + + [ "$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_order $outdated + pkg_build $order + } + + log "Updated all packages" +} + +pkg_clean() { + # Clean up on exit or error. This removes everything related + # to the build. + [ "$CPT_DEBUG" != 1 ] || return 0 + + # Block 'Ctrl+C' while cache is being cleaned. + trap_set block + + # Remove temporary items. + rm -rf -- "${CPT_TMPDIR:=$cac_dir/proc}/$pid" +} + +create_cache() { + # A temporary directory can be specified apart from the cache + # directory in order to build in a user specified directory. + # /tmp could be used in order to build on ram, useful on SSDs. + # The user can specify CPT_TMPDIR for this. + # + # Create the required temporary directories and set the variables + # which point to them. + mkdir -p "${tmp_dir:=${CPT_TMPDIR:=$cac_dir/proc}/$pid}" + + # If an argument is given, skip the creation of other cache directories. + # This here makes shellcheck extremely angry, so I am globally disabling + # SC2119. + [ "$1" ] || mkdir -p "${mak_dir:=$tmp_dir/build}" \ + "${pkg_dir:=$tmp_dir/pkg}" \ + "${tar_dir:=$tmp_dir/export}" + +} + +# Local Variables: +# mode: sh +# End: |