mirror of
https://github.com/fsquillace/junest.git
synced 2026-01-23 02:34:30 +00:00
Change the CLI and make ns the default backend
This commit is contained in:
Filippo Squillace
parent
ef4bf7cd79
commit
3341187cf6
4 changed files with 361 additions and 243 deletions
304
bin/junest
304
bin/junest
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@ -13,148 +13,112 @@ source "${JUNEST_BASE}/lib/utils/utils.sh"
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source "${JUNEST_BASE}/lib/core/common.sh"
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source "${JUNEST_BASE}/lib/core/build.sh"
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source "${JUNEST_BASE}/lib/core/setup.sh"
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source "${JUNEST_BASE}/lib/core/chroot.sh"
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source "${JUNEST_BASE}/lib/core/namespace.sh"
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source "${JUNEST_BASE}/lib/core/proot.sh"
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source "${JUNEST_BASE}/lib/core/setup.sh"
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# TODO give more flexibility for userns to allow not to copy passwd/grops file, etc
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# TODO think about removing yaourt
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###################################
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### General functions ###
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###################################
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usage() {
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echo -e "$NAME (v$(cat $JUNEST_BASE/VERSION)): $DESCRIPTION"
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echo
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echo -e "Usage: $CMD [options] [--] [command]"
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echo -e "Usage: $CMD [action] [options] [--] [command]"
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echo
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echo -e "Setup options:"
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echo -e "-i, --setup-from-file <image> Setup the $NAME image in ${JUNEST_HOME}"
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echo -e "-a, --arch <arch> $NAME architecture to download (x86_64, x86, arm)"
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echo -e " Defaults to the host architecture ($ARCH)"
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echo -e "-d, --delete Delete $NAME from ${JUNEST_HOME}"
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echo -e "General:"
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echo -e "-h, --help Show this help message"
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echo -e "-V, --version Show the $NAME version"
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echo
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echo -e "Access options:"
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echo -e "-f, --fakeroot Run $NAME with fakeroot privileges"
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echo -e "-g, --groot Run $NAME with root privileges via GRoot"
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echo -e "-r, --root Run $NAME with root privileges via classic chroot"
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echo -e "-u, --namespace Use Linux Namespace (with GRoot) instead of PRoot"
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echo -e "-p, --backend-args <args> Arguments for backend program (PRoot or GRoot)"
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echo -e " ($CMD -p \"--help\" to check out the PRoot options"
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echo -e " $CMD -g -p \"--help\" to check out the GRoot options"
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echo -e " $CMD -r -p \"--help\" to check out the chroot options)"
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echo -e "Actions and options:"
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echo -e " [s]etup "
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echo -e " -i, --from-file <image> Setup the $NAME image in ${JUNEST_HOME}"
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echo -e " -a, --arch <arch> $NAME architecture to download (x86_64, arm)"
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echo -e " Defaults to the host architecture ($ARCH)"
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echo -e " -d, --delete Delete $NAME from ${JUNEST_HOME}"
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echo
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echo -e "Building options:"
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echo -e "-b, --build-image Build a $NAME image (must run in ArchLinux)"
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echo -e "-n, --disable-validation Disable the $NAME image validation"
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echo -e " [n]s Access via Linux Namespaces using GRoot (Default action)"
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echo -e " -b, --backend-args <args> Arguments for GRoot backend program"
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echo -e " ($CMD groot -p \"--help\" to check out the GRoot options)"
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echo
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echo -e "General options:"
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echo -e "-h, --help Show this help message"
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echo -e "-V, --version Show the $NAME version"
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echo -e " [p]root Access via PRoot"
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echo -e " -f, --fakeroot Run $NAME with fakeroot privileges"
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echo -e " -b, --backend-args <args> Arguments for PRoot backend program"
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echo -e " ($CMD proot -p \"--help\" to check out the PRoot options)"
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echo
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echo -e " [g]root Access with root privileges via GRoot"
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echo -e " -b, --backend-args <args> Arguments for GRoot backend program"
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echo -e " ($CMD groot -p \"--help\" to check out the GRoot options)"
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echo
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echo -e " [r]oot Access with root privileges via classic chroot"
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echo -e " -b, --backend-args <args> Arguments for chroot backend program"
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echo -e " ($CMD root -p \"--help\" to check out the chroot options)"
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echo
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echo -e " [b]uild Build a $NAME image (must run in ArchLinux)"
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echo -e " -n, --disable-validation Disable the $NAME image validation"
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}
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version() {
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echo -e "$NAME $(cat $JUNEST_BASE/VERSION)"
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}
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check_cli(){
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if $OPT_BUILD_IMAGE
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then
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if $OPT_DELETE || $OPT_HELP || $OPT_VERSION || $OPT_SETUP_FROM_FILE || \
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$OPT_FAKEROOT || $OPT_ROOT
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then
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die "The build image option must be used exclusively"
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fi
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fi
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if $OPT_DISABLE_VALIDATION
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then
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if $OPT_DELETE || $OPT_HELP || $OPT_VERSION || $OPT_SETUP_FROM_FILE || \
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$OPT_FAKEROOT || $OPT_ROOT
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then
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die "The disable validation option must be used with the build image option only"
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fi
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fi
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if $OPT_DELETE
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then
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if $OPT_BUILD_IMAGE || $OPT_HELP || $OPT_VERSION || $OPT_SETUP_FROM_FILE || \
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$OPT_FAKEROOT || $OPT_ROOT || $OPT_DISABLE_VALIDATION
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then
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die "The $NAME delete option must be used exclusively"
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fi
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fi
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if $OPT_HELP
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then
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if $OPT_BUILD_IMAGE || $OPT_DELETE || $OPT_VERSION || $OPT_SETUP_FROM_FILE || \
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$OPT_FAKEROOT || $OPT_ROOT || $OPT_DISABLE_VALIDATION
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then
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die "The $NAME help option must be used exclusively"
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fi
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fi
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if $OPT_VERSION
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then
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if $OPT_BUILD_IMAGE || $OPT_DELETE || $OPT_HELP || $OPT_SETUP_FROM_FILE || \
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$OPT_FAKEROOT || $OPT_ROOT || $OPT_DISABLE_VALIDATION
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then
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die "The $NAME version option must be used exclusively"
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fi
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fi
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if $OPT_FAKEROOT && $OPT_ROOT
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then
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die "You must access to $NAME with either fakeroot or root permissions"
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fi
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if $OPT_BACKEND_ARGS || $OPT_ARCH
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then
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if $OPT_BUILD_IMAGE || $OPT_DELETE || $OPT_HELP || \
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$OPT_ROOT || $OPT_VERSION || $OPT_DISABLE_VALIDATION
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then
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die "Invalid syntax: Proot and arch args are not allowed with the other options"
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fi
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fi
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if [ "$ARGS" != "" ]
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then
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if $OPT_BUILD_IMAGE || $OPT_DELETE || $OPT_HELP || $OPT_SETUP_FROM_FILE || \
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$OPT_VERSION || $OPT_DISABLE_VALIDATION
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then
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die "No arguments are needed. For the CLI syntax run: $CMD --help"
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fi
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fi
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function parse_arguments(){
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# Actions
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ACT_SETUP=false
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ACT_BUILD=false
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ACT_NAMESPACE=false
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ACT_PROOT=false
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ACT_GROOT=false
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ACT_ROOT=false
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ACT_HELP=false
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ACT_VERSION=false
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return 0
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case "$1" in
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s|setup) ACT_SETUP=true ; shift ;;
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b|build) ACT_BUILD=true ; shift ;;
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n|ns) ACT_NAMESPACE=true ; shift ;;
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p|proot) ACT_PROOT=true ; shift ;;
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g|groot) ACT_GROOT=true ; shift ;;
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r|root) ACT_ROOT=true ; shift ;;
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-h|--help) ACT_HELP=true ; shift ;;
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-V|--version) ACT_VERSION=true ; shift ;;
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*) ACT_NAMESPACE=true ;;
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esac
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if $ACT_SETUP
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then
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_parse_setup_opts "$@"
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elif $ACT_BUILD
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then
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_parse_build_opts "$@"
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elif $ACT_NAMESPACE
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then
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_parse_general_opts "$@"
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elif $ACT_PROOT
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then
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_parse_proot_opts "$@"
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elif $ACT_GROOT
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then
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_parse_general_opts "$@"
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elif $ACT_ROOT
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then
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_parse_general_opts "$@"
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fi
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}
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function parse_arguments(){
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OPT_SETUP_FROM_FILE=false
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IMAGE_FILE=""
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OPT_FAKEROOT=false
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OPT_ROOT=false
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OPT_GROOT=false
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OPT_USER_NAMESPACE=false
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function _parse_general_opts() {
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# Options:
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OPT_BACKEND_ARGS=false
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BACKEND_ARGS=""
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OPT_ARCH=false
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ARCH_ARG=""
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OPT_BUILD_IMAGE=false
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OPT_DISABLE_VALIDATION=false
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CHECK_ARG=""
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OPT_DELETE=false
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OPT_HELP=false
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OPT_VERSION=false
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for opt in "$@"
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while [[ -n "$1" ]]
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do
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case "$1" in
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-i|--setup-from-file) OPT_SETUP_FROM_FILE=true ; shift ; IMAGE_FILE=$1 ; shift ;;
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-f|--fakeroot) OPT_FAKEROOT=true ; shift ;;
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-r|--root) OPT_ROOT=true ; shift ;;
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-g|--groot) OPT_GROOT=true ; shift ;;
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-u|--namespace) OPT_USER_NAMESPACE=true ; shift ;;
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-p|--backend-args) OPT_BACKEND_ARGS=true ; shift ; BACKEND_ARGS=$1; shift ;;
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-a|--arch) OPT_ARCH=true ; shift ; ARCH_ARG=$1; shift ;;
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-b|--build-image) OPT_BUILD_IMAGE=true ; shift ;;
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-n|--disable-validation) OPT_DISABLE_VALIDATION=true ; shift ;;
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-d|--delete) OPT_DELETE=true ; shift ;;
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-h|--help) OPT_HELP=true ; shift ;;
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-V|--version) OPT_VERSION=true ; shift ;;
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--) shift ; break ;;
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-*) die "Invalid option $1" ;;
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*) break ;;
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@ -168,44 +132,105 @@ function parse_arguments(){
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done
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}
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function execute_operation(){
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$OPT_HELP && usage && return
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$OPT_VERSION && version && return
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function _parse_proot_opts() {
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# Options:
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OPT_FAKEROOT=false
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OPT_BACKEND_ARGS=false
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BACKEND_ARGS=""
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if $OPT_BUILD_IMAGE; then
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while [[ -n "$1" ]]
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do
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case "$1" in
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-f|--fakeroot) OPT_FAKEROOT=true ; shift ;;
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-p|--backend-args) OPT_BACKEND_ARGS=true ; shift ; BACKEND_ARGS=$1; shift ;;
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--) shift ; break ;;
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-*) die "Invalid option $1" ;;
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*) break ;;
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esac
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done
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ARGS=()
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for arg in "$@"
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do
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ARGS+=("$arg")
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done
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}
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function _parse_build_opts() {
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OPT_DISABLE_VALIDATION=false
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while [[ -n "$1" ]]
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do
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case "$1" in
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-n|--disable-validation) OPT_DISABLE_VALIDATION=true ; shift ;;
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*) die "Invalid option $1" ;;
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esac
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done
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}
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function _parse_setup_opts() {
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OPT_SETUP_FROM_FILE=false
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IMAGE_FILE=""
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OPT_ARCH=false
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ARCH_ARG=""
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OPT_DELETE=false
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while [[ -n "$1" ]]
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do
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case "$1" in
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-i|--from-file) OPT_SETUP_FROM_FILE=true ; shift ; IMAGE_FILE=$1 ; shift ;;
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-a|--arch) OPT_ARCH=true ; shift ; ARCH_ARG=$1; shift ;;
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-d|--delete) OPT_DELETE=true ; shift ;;
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*) die "Invalid option $1" ;;
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esac
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done
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}
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function execute_operation() {
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$ACT_HELP && usage && return
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$ACT_VERSION && version && return
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if $ACT_BUILD; then
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build_image_env $OPT_DISABLE_VALIDATION
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return
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elif $OPT_DELETE; then
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delete_env
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return
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fi
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if $ACT_SETUP; then
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if $OPT_DELETE; then
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delete_env
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else
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if is_env_installed
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then
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die "Error: The image cannot be installed since $JUNEST_HOME is not empty."
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fi
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if $OPT_SETUP_FROM_FILE; then
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setup_env_from_file $IMAGE_FILE
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else
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setup_env $ARCH_ARG
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fi
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fi
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return
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fi
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if ! is_env_installed
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then
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if $OPT_SETUP_FROM_FILE; then
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setup_env_from_file $IMAGE_FILE
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else
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setup_env $ARCH_ARG
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unset ARCH_ARG
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fi
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elif $OPT_SETUP_FROM_FILE; then
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die "Error: The image cannot be installed since $JUNEST_HOME is not empty."
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die "Error: The image is still not installed in $JUNEST_HOME. Run this first: $CMD setup"
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fi
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[ -z "${ARCH_ARG}" ] || \
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die "The option --arch cannot be specified since JuNest has already been downloaded in $JUNEST_HOME"
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local run_env
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if $OPT_USER_NAMESPACE; then
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if $ACT_NAMESPACE; then
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run_env=run_env_with_namespace
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elif $OPT_FAKEROOT; then
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run_env=run_env_as_fakeroot
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elif $OPT_ROOT; then
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run_env=run_env_as_chroot
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elif $OPT_GROOT; then
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elif $ACT_PROOT; then
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if $OPT_FAKEROOT; then
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run_env=run_env_as_fakeroot
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else
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run_env=run_env_as_user
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fi
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elif $ACT_GROOT; then
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run_env=run_env_as_groot
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else
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run_env=run_env_as_user
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elif $ACT_ROOT; then
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run_env=run_env_as_chroot
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fi
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$run_env "${BACKEND_ARGS}" "${ARGS[@]}"
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@ -214,7 +239,6 @@ function execute_operation(){
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function main() {
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parse_arguments "$@"
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check_cli
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execute_operation
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}
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