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https://github.com/erenfro/gen2stage4.git
synced 2024-11-21 22:25:35 -05:00
Complete code refactor of cpstage4
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parent
605d0ffea7
commit
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SSH key fingerprint:
SHA256:1TKB8Z257L8EHK8GWNxKgMhD8a+FAR+f+j3nnlcuNVM
1 changed files with 165 additions and 139 deletions
304
cpstage4.sh
304
cpstage4.sh
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@ -1,192 +1,218 @@
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#!/usr/bin/env bash
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# checks if run as root:
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if [ "$(whoami)" != 'root' ]
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then
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echo "$(basename "$0"): must be root."
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exit 1
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fi
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# set flag variables to null/default
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EXCLUDE_BOOT=0
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EXCLUDE_LOST=0
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QUIET=0
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HAS_PORTAGEQ=0
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optExcludeBoot=false
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optExcludeConfidential=false
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optExcludeLost=true
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optQuiet=false
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optUserExclude=()
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if command -v portageq &>/dev/null
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then
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HAS_PORTAGEQ=1
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fi
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USAGE="Usage:\n\
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$(basename "$0") [-b -c -k -l -q] [-e <additional excludes dir*>] <source> <destination>\n\
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Positional Arguments:\n\
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<source>: from where to copy system files.\n\
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<destination>: where to copy system files to.\n\
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Flags:\n\
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-b: excludes boot directory.\n\
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-c: excludes some confidential files (currently only .bash_history and connman network lists).\n\
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-e: an additional excludes directory (one dir one -e, donot use it with *).\n\
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-l: excludes lost+found directory.\n\
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-q: activate quiet mode (no confirmation).\n\
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-h: display this help message."
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function showHelp() {
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echo "Usage:"
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echo "$(basename "$0") [-b -c -l -q] [-s || -t <target>] [-e <exclude>...] [-i <include>...] <dest> [-- [rsync-opts]]"
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echo "Position Arguments:"
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echo " <dest> destination path to copy system files to"
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echo " [rsync-opts] additional options to pass to rsync command"
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echo
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echo "Options:"
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echo " -b excludes boot directory"
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echo " -c excludes some confidential files (currently only .bash_history and connman network lists)"
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echo " -l includes lost+found directory"
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echo " -q activates quiet mode (no confirmation)"
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echo " -s makes copy of current system"
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echo " -t <path> makes copy of system located at the <path>"
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echo " -e <exclude> an additional exclude directory (one dir one -e, do not use it with *)"
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echo " -i <include> an additional include. This has higher precedence than -e, -t, and -s"
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echo " -h display this help message."
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if [[ "$1" -ge 0 ]]; then
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exit "$1"
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else
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exit 0
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fi
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}
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function errorMsg() {
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local rc=0
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if [[ "$1" -gt 0 ]]; then
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rc="$1"
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shift
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fi
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echo "$*" >&2
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if [[ "$rc" -gt 0 ]]; then
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exit "$rc"
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fi
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}
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# reads options:
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while getopts ":e:bcelqh" flag
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do
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case "$flag" in
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c)
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EXCLUDE_CONFIDENTIAL=1
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;;
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b)
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EXCLUDE_BOOT=1
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;;
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l)
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EXCLUDE_LOST=1
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;;
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e)
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USER_EXCL+=("--exclude=${OPTARG}")
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;;
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q)
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QUIET=1
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;;
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h)
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echo -e "$USAGE"
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exit 0
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;;
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\?)
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echo "Invalid option: -$OPTARG" >&2
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exit 1
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;;
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:)
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echo "Option -$OPTARG requires an argument." >&2
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exit 1
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;;
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esac
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while [[ $# -gt 0 ]]; do
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while getopts ":t:e:i:sqcblh" flag; do
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case "$flag" in
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t) sourcePath="$OPTARG";;
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s) sourcePath="/";;
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q) optQuiet=true;;
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c) optExcludeConfidential=true;;
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b) optExcludeBoot=true;;
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l) optExcludeLost=false;;
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e) optUserExclude+=("$OPTARG");;
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i) optUserInclude+=("$OPTARG");;
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h) showHelp 0;;
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\?) errorMsg 1 "Invalid option: -$OPTARG";;
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:) errorMsg 1 "Option -$OPTARG requires an argument.";;
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esac
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done || exit 1
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[[ $OPTIND -gt $# ]] && break # reached the end of parameters
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shift $((OPTIND - 1)) # Free processed options so far
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OPTIND=1 # we must reset OPTIND
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if [[ -z "$targetPath" ]]; then
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targetPath=$1
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else
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rsyncArgs[${#rsyncArgs[*]}]=$1
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fi
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#args[${#args[*]}]=$1 # save first non-option argument (a.k.a. positional argument)
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shift # remove saved arg
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done
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# shifts pointer to read mandatory output file specification
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shift $((OPTIND - 1))
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SOURCE=${1}
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DESTINATION=${2}
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if [ -z "$SOURCE" ]
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then
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echo "$(basename "$0"): no source specified."
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echo -e "$USAGE"
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# checks if run as root:
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#if [[ "$(id -u)" -ne 0 ]]; then
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# echo "$(basename "$0"): must run as root"
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# exit 250
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#fi
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if [[ -z "$sourcePath" ]]; then
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echo "$(basename "$0"): no source path specified"
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exit 1
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fi
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if [ -z "$DESTINATION" ]
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then
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echo "$(basename "$0"): no source specified."
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echo -e "$USAGE"
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elif [[ ! -d "$sourcePath" ]]; then
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echo "$(basename "$0"): no source path does not exist"
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exit 1
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elif [[ "$sourcePath" != */ ]]; then
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# make sure source path ends with slash
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sourcePath="${sourcePath}/"
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fi
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# make sure SOURCE path ends with slash
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if [[ "$SOURCE" != */ ]]
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then
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SOURCE="${SOURCE}/"
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fi
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# make sure DESTINATION path ends with slash
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if [[ "$DESTINATION" != */ ]]
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then
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DESTINATION="${DESTINATION}/"
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fi
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# checks for quiet mode (no confirmation)
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if ((QUIET))
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then
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AGREE="yes"
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if [[ -z "$targetPath" ]]; then
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echo "$(basename "$0"): no destination path specified"
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exit 1
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elif [[ ! -d "$targetPath" ]]; then
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echo "$(basename "$0"): destination path (\`$targetPath\`) does not exist"
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exit 1
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elif [[ "$targetPath" != */ ]]; then
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# make sure destination path ends with slash
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targetPath="${targetPath}/"
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fi
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# Excludes:
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EXCLUDES=(
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"--exclude=${SOURCE}dev/*"
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"--exclude=${SOURCE}var/tmp/*"
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"--exclude=${SOURCE}media/*"
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"--exclude=${SOURCE}mnt/*/*"
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"--exclude=${SOURCE}proc/*"
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"--exclude=${SOURCE}run/*"
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"--exclude=${SOURCE}sys/*"
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"--exclude=${SOURCE}tmp/*"
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"--exclude=${SOURCE}var/lock/*"
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"--exclude=${SOURCE}var/log/*"
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"--exclude=${SOURCE}var/run/*"
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"--exclude=${SOURCE}var/lib/docker/*"
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syncExcludes=(
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"dev/*"
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"var/tmp/*"
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"media/*"
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"mnt/*/*"
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"proc/*"
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"run/*"
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"sys/*"
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"tmp/*"
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"var/lock/*"
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"var/log/*"
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"var/run/*"
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"var/lib/docker/*"
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"var/lib/containers/*"
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"var/lib/machines/*"
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"var/lib/libvirt/*"
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"var/lib/lxd/*"
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"home/*/*"
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)
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EXCLUDES_DEFAULT_PORTAGE=(
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"--exclude=${SOURCE}var/db/repos/gentoo/*"
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"--exclude=${SOURCE}var/cache/distfiles/*"
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"--exclude=${SOURCE}usr/portage/*"
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#EXCLUDES_DEFAULT_PORTAGE=(
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syncExcludesPortage=(
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"var/db/repos/*/*"
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"var/cache/distfiles/*"
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"var/cache/binpkgs/*"
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"usr/portage/*"
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)
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EXCLUDES+=("${USER_EXCL[@]}")
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syncIncludes=(
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"dev/console"
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"dev/null"
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"var/db/pkg/*"
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)
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if [ "$SOURCE" == '/' ]
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then
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if ((HAS_PORTAGEQ))
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then
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PORTAGEQ_REPOS=$(portageq get_repos /)
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for i in ${PORTAGEQ_REPOS}; do
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REPO_PATH=$(portageq get_repo_path / "${i}")
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EXCLUDES+=("--exclude=${REPO_PATH}/*")
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syncExcludes=("${syncExcludes[@]/#/"$sourcePath"}")
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syncIncludes=("${syncIncludes[@]/#/"$sourcePath"}")
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if [[ "$sourcePath" == '/' ]]; then
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if command -v portageq &>/dev/null; then
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portageRepos=$(portageq get_repos /)
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for i in ${portageRepos}; do
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repoPath=$(portageq get_repo_path / "${i}")
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syncExcludes+=("${repoPath}/*")
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done
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EXCLUDES+=("--exclude=$(portageq distdir)/*")
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syncExcludes+=("$(portageq distdir)/*")
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syncExcludes+=("$(portageq pkgdir)/*")
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else
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EXCLUDES+=("${EXCLUDES_DEFAULT_PORTAGE[@]}")
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syncExcludes+=("${syncExcludesPortage[@]/#/"/"}")
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fi
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else
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EXCLUDES+=("${EXCLUDES_DEFAULT_PORTAGE[@]}")
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syncExcludes+=("${syncExcludesPortage[@]/#/"$sourcePath"}")
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fi
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if ((EXCLUDE_BOOT))
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then
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EXCLUDES+=("--exclude=${SOURCE}boot/*")
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if $optExcludeConfidential; then
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syncExcludes+=("${sourcePath}home/*/.bash_history")
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syncExcludes+=("${sourcePath}root/.bash_history")
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syncExcludes+=("${sourcePath}var/lib/connman/*")
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fi
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if ((EXCLUDE_CONFIDENTIAL))
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then
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EXCLUDES+=("--exclude=${SOURCE}home/*/.bash_history")
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EXCLUDES+=("--exclude=${SOURCE}root/.bash_history")
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EXCLUDES+=("--exclude=${SOURCE}var/lib/connman/*")
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if $optExcludeBoot; then
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syncExcludes+=("${sourcePath}boot/*")
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fi
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if ((EXCLUDE_LOST))
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then
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EXCLUDES+=("--exclude=lost+found")
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if $optExcludeLost; then
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syncExcludes+=("lost+found")
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fi
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# Generic tar options:
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RSYNC_OPTIONS=(
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syncExcludes+=("${optUserExclude[@]}")
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syncIncludes+=("${optUserInclude[@]}")
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# Generic rsync options:
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rsyncOptions=(
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-avxHAXS
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--numeric-ids
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"--info=progress2"
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)
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)
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rsyncOptions+=("${rsyncArgs[@]}")
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# if not in quiet mode, this message will be displayed:
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if [[ "$AGREE" != 'yes' ]]
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then
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if ! $optQuiet; then
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echo "Are you sure that you want to copy system files located under"
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echo "$SOURCE"
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echo "$sourcePath"
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echo "to the following directory"
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echo "$DESTINATION"
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echo "$targetPath"
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echo
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echo "WARNING: since all data is copied by default the user should exclude all"
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echo "security- or privacy-related files and directories, which are not"
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echo "already excluded, manually per cmdline."
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echo "example: \$ $(basename "$0") --exclude=/etc/ssh/ssh_host* <source> <destination>"
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echo "example: \$ $(basename "$0") -s -e \"/etc/ssh/ssh_host*\" <destination>"
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echo
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echo "COMMAND LINE PREVIEW:"
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echo 'rsync' "${RSYNC_OPTIONS[@]}" "${EXCLUDES[@]}" "${SOURCE}" "${DESTINATION}"
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echo 'rsync' "${rsyncOptions[@]}" "${syncIncludes[@]/#/--include=}" "${syncExcludes[@]/#/--exclude=}" "$sourcePath" "$targetPath"
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echo
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echo -n 'Type "yes" to continue or anything else to quit: '
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read -r AGREE
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read -r promptAgree
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if [[ "${promptAgree,,}" == "yes" ]]; then
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optQuiet=true
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fi
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fi
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# start stage4 creation:
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if [ "$AGREE" == 'yes' ]
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then
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rsync "${RSYNC_OPTIONS[@]}" "${EXCLUDES[@]}" "${SOURCE}" "${DESTINATION}"
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if $optQuiet; then
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echo "Would've worked"
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#rsync "${rsyncOptions[@]}" "${syncExcludes[@]/#/--exclude=}" "$sourcePath" "$targetPath"
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fi
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