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install.sh
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#!/usr/bin/env bash
# This script contains functions with different licenses. Some functions specifically annotated with the author/license information.
# Functions that are not annotated with author/license information released under Apache License 2.0: https://www.apache.org/licenses/LICENSE-2.0.txt
set -uo pipefail
main() {
REQUIRED_BASH_VERSION="3.2.57"
REQUIRED_GIT_VERSION="2.18.0"
validate_bash_version "$REQUIRED_BASH_VERSION"
OPT_DEFAULT_CI="no"
OPT_DEFAULT_INTERACTIVE="auto"
OPT_DEFAULT_JOIN_DOCKER_GROUP="auto"
OPT_DEFAULT_SETUP_BIN_PATH="auto"
OPT_DEFAULT_AUTOACTIVATE_WERF="auto"
OPT_DEFAULT_INSTALL_WERF_SYSTEM_DEPENDENCIES="auto"
OPT_DEFAULT_SETUP_BUILDAH="auto"
OPT_DEFAULT_VERIFY_TRDL_SIGNATURE="yes"
OPT_DEFAULT_SHELL="auto"
OPT_DEFAULT_WERF_AUTOACTIVATE_VERSION="2"
OPT_DEFAULT_WERF_AUTOACTIVATE_CHANNEL="stable"
OPT_DEFAULT_INITIAL_TRDL_VERSION="0.7.0"
OPT_DEFAULT_TRDL_TUF_REPO="https://tuf.trdl.dev"
OPT_DEFAULT_TRDL_PGP_PUBKEY_URL="https://trdl.dev/trdl-client.asc"
OPT_DEFAULT_WERF_TUF_REPO="https://tuf.werf.io"
OPT_DEFAULT_WERF_TUF_ROOT_VERSION="1"
OPT_DEFAULT_WERF_TUF_ROOT_SHA="b7ff6bcbe598e072a86d595a3621924c8612c7e6dc6a82e919abe89707d7e3f468e616b5635630680dd1e98fc362ae5051728406700e6274c5ed1ad92bea52a2"
OPT_REGEX_SHELL='^(bash|zsh|auto)?$'
OPT_REGEX_WERF_AUTOACTIVATE_VERSION='^[.0-9]+$'
OPT_REGEX_WERF_AUTOACTIVATE_CHANNEL='.+'
OPT_REGEX_INITIAL_TRDL_VERSION='^[0-9]+.[0-9]+.[0-9]+$'
OPT_REGEX_TRDL_TUF_REPO='^https?://.+'
OPT_REGEX_TRDL_PGP_PUBKEY_URL='^https?://.+'
OPT_REGEX_WERF_TUF_REPO='^https?://.+'
OPT_REGEX_WERF_TUF_ROOT_VERSION='^[0-9]+$'
OPT_REGEX_WERF_TUF_ROOT_SHA='^[a-fA-F0-9]+$'
eval "$(getoptions getoptions_config) abort 'Failure parsing options.'"
OPT_CI="${OPT_CI:-$OPT_DEFAULT_CI}"
if [ "$OPT_CI" == "yes" ]; then
OPT_INTERACTIVE="${OPT_INTERACTIVE:-"no"}"
OPT_JOIN_DOCKER_GROUP="${OPT_JOIN_DOCKER_GROUP:-"no"}"
OPT_SETUP_BIN_PATH="${OPT_SETUP_BIN_PATH:-"no"}"
OPT_AUTOACTIVATE_WERF="${OPT_AUTOACTIVATE_WERF:-"no"}"
OPT_INSTALL_WERF_SYSTEM_DEPENDENCIES="${OPT_INSTALL_WERF_SYSTEM_DEPENDENCIES:-"no"}"
OPT_SETUP_BUILDAH="${OPT_SETUP_BUILDAH:-"no"}"
else
OPT_INTERACTIVE="${OPT_INTERACTIVE:-$OPT_DEFAULT_INTERACTIVE}"
OPT_JOIN_DOCKER_GROUP="${OPT_JOIN_DOCKER_GROUP:-$OPT_DEFAULT_JOIN_DOCKER_GROUP}"
OPT_SETUP_BIN_PATH="${OPT_SETUP_BIN_PATH:-$OPT_DEFAULT_SETUP_BIN_PATH}"
OPT_AUTOACTIVATE_WERF="${OPT_AUTOACTIVATE_WERF:-$OPT_DEFAULT_AUTOACTIVATE_WERF}"
OPT_INSTALL_WERF_SYSTEM_DEPENDENCIES="${OPT_INSTALL_WERF_SYSTEM_DEPENDENCIES:-$OPT_DEFAULT_INSTALL_WERF_SYSTEM_DEPENDENCIES}"
OPT_SETUP_BUILDAH="${OPT_SETUP_BUILDAH:-$OPT_DEFAULT_SETUP_BUILDAH}"
fi
OPT_VERIFY_TRDL_SIGNATURE="${OPT_VERIFY_TRDL_SIGNATURE:-$OPT_DEFAULT_VERIFY_TRDL_SIGNATURE}"
OPT_SHELL="${OPT_SHELL:-$OPT_DEFAULT_SHELL}"
OPT_WERF_AUTOACTIVATE_VERSION="${OPT_WERF_AUTOACTIVATE_VERSION:-$OPT_DEFAULT_WERF_AUTOACTIVATE_VERSION}"
OPT_WERF_AUTOACTIVATE_CHANNEL="${OPT_WERF_AUTOACTIVATE_CHANNEL:-$OPT_DEFAULT_WERF_AUTOACTIVATE_CHANNEL}"
OPT_INITIAL_TRDL_VERSION="${OPT_INITIAL_TRDL_VERSION:-$OPT_DEFAULT_INITIAL_TRDL_VERSION}"
OPT_TRDL_TUF_REPO="${OPT_TRDL_TUF_REPO:-$OPT_DEFAULT_TRDL_TUF_REPO}"
OPT_TRDL_PGP_PUBKEY_URL="${OPT_TRDL_PGP_PUBKEY_URL:-$OPT_DEFAULT_TRDL_PGP_PUBKEY_URL}"
OPT_WERF_TUF_REPO="${OPT_WERF_TUF_REPO:-$OPT_DEFAULT_WERF_TUF_REPO}"
OPT_WERF_TUF_ROOT_VERSION="${OPT_WERF_TUF_ROOT_VERSION:-$OPT_DEFAULT_WERF_TUF_ROOT_VERSION}"
OPT_WERF_TUF_ROOT_SHA="${OPT_WERF_TUF_ROOT_SHA:-$OPT_DEFAULT_WERF_TUF_ROOT_SHA}"
install_werf_system_dependencies "$OPT_INSTALL_WERF_SYSTEM_DEPENDENCIES"
ensure_cmds_available uname git grep tee install
validate_git_version "$REQUIRED_GIT_VERSION"
setup_buildah "$OPT_SETUP_BUILDAH"
[[ "$OPT_VERIFY_TRDL_SIGNATURE" == "no" ]] && ensure_cmds_available gpg
declare arch
arch="$(get_arch)" || abort "Failure getting system architecture."
declare os
os="$(get_os)" || abort "Failure getting OS."
declare shell
if [[ "$OPT_SHELL" == "auto" ]]; then
set_shell || abort "Failure getting user shell."
else
shell="$OPT_SHELL"
fi
[[ $os == "linux" ]] && propose_joining_docker_group "$OPT_JOIN_DOCKER_GROUP"
setup_trdl_bin_path "$shell" "$OPT_SETUP_BIN_PATH"
install_trdl "$os" "$arch" "$OPT_TRDL_TUF_REPO" "$OPT_TRDL_PGP_PUBKEY_URL" "$OPT_INITIAL_TRDL_VERSION" "$OPT_VERIFY_TRDL_SIGNATURE"
add_trdl_werf_repo "$OPT_WERF_TUF_REPO" "$OPT_WERF_TUF_ROOT_VERSION" "$OPT_WERF_TUF_ROOT_SHA"
enable_automatic_werf_activation "$shell" "$OPT_AUTOACTIVATE_WERF" "$OPT_WERF_AUTOACTIVATE_VERSION" "$OPT_WERF_AUTOACTIVATE_CHANNEL"
finalize "$OPT_WERF_AUTOACTIVATE_VERSION" "$OPT_WERF_AUTOACTIVATE_CHANNEL"
}
getoptions_config() {
setup REST on:"yes" no:"no" init:"" help:usage -- "Usage: $(basename "$0") [options]" ''
msg -- "Options (use + instead of - for short options to disable them):"
flag OPT_CI --{no-}ci -- \
"CI mode. Configures a few other options in a way recommended for CI (i.e. enables non-interactive mode). Full list of configured options can be found in the installer script itself. Default: $OPT_DEFAULT_CI"
flag OPT_INTERACTIVE -i --{no-}interactive -- \
"If run non-interactively, then choose recommended answers for all prompts. Default: $OPT_DEFAULT_INTERACTIVE"
flag OPT_VERIFY_TRDL_SIGNATURE --{no-}verify-trdl-signature -- \
"Verify PGP signature of trdl binary. Default: $OPT_DEFAULT_VERIFY_TRDL_SIGNATURE"
flag OPT_JOIN_DOCKER_GROUP --{no-}join-docker-group -- \
"Add user to the docker group? Default: $OPT_DEFAULT_JOIN_DOCKER_GROUP"
flag OPT_SETUP_BIN_PATH -p --{no-}setup-bin-path -- \
"Add \"$HOME/bin\" to \$PATH for trdl? Default: $OPT_DEFAULT_SETUP_BIN_PATH"
flag OPT_AUTOACTIVATE_WERF -a --{no-}autoactivate-werf -- \
"Enable werf autoactivation? Default: $OPT_DEFAULT_AUTOACTIVATE_WERF"
flag OPT_INSTALL_WERF_SYSTEM_DEPENDENCIES --{no-}install-werf-system-depedencies -- \
"Install system dependencies for werf? Default: $OPT_DEFAULT_INSTALL_WERF_SYSTEM_DEPENDENCIES"
flag OPT_SETUP_BUILDAH --{no-}setup-buildah -- \
"Install and set up Buildah backend? Default: $OPT_DEFAULT_SETUP_BUILDAH"
param OPT_SHELL -s --shell validate:"validate_option_by_regex '$OPT_REGEX_SHELL'" -- \
"Shell, for which werf/trdl should be set up. Default: $OPT_DEFAULT_SHELL. Allowed values regex: $OPT_REGEX_SHELL"
param OPT_WERF_AUTOACTIVATE_VERSION -v --version validate:"validate_option_by_regex '$OPT_REGEX_WERF_AUTOACTIVATE_VERSION'" -- \
"Autoactivated (if enabled) werf version. Default: $OPT_DEFAULT_WERF_AUTOACTIVATE_VERSION. Allowed values regex: $OPT_REGEX_WERF_AUTOACTIVATE_VERSION"
param OPT_WERF_AUTOACTIVATE_CHANNEL -c --channel validate:"validate_option_by_regex '$OPT_REGEX_WERF_AUTOACTIVATE_CHANNEL'" -- \
"Autoactivated (if enabled) werf channel. Default: $OPT_DEFAULT_WERF_AUTOACTIVATE_CHANNEL. Allowed values regex: $OPT_REGEX_WERF_AUTOACTIVATE_CHANNEL"
param OPT_INITIAL_TRDL_VERSION --initial-trdl-version validate:"validate_option_by_regex '$OPT_REGEX_INITIAL_TRDL_VERSION'" -- \
"Initially installed version of trdl (self-updates automatically). Default: $OPT_DEFAULT_INITIAL_TRDL_VERSION. Allowed values regex: $OPT_REGEX_INITIAL_TRDL_VERSION"
param OPT_TRDL_TUF_REPO --trdl-tuf-repo validate:"validate_option_by_regex '$OPT_REGEX_TRDL_TUF_REPO'" -- \
"trdl TUF-repository URL. Default: $OPT_DEFAULT_TRDL_TUF_REPO. Allowed values regex: $OPT_REGEX_TRDL_TUF_REPO"
param OPT_TRDL_PGP_PUBKEY_URL --trdl-pgp-pubkey-url validate:"validate_option_by_regex '$OPT_REGEX_TRDL_PGP_PUBKEY_URL'" -- \
"trdl GPG public key URL. Default: $OPT_DEFAULT_TRDL_PGP_PUBKEY_URL. Allowed values regex: $OPT_REGEX_TRDL_PGP_PUBKEY_URL"
param OPT_WERF_TUF_REPO --werf-tuf-repo validate:"validate_option_by_regex '$OPT_REGEX_WERF_TUF_REPO'" -- \
"werf TUF-repository URL. Default: $OPT_DEFAULT_WERF_TUF_REPO. Allowed values regex: $OPT_REGEX_WERF_TUF_REPO"
param OPT_WERF_TUF_ROOT_VERSION --werf-tuf-root-version validate:"validate_option_by_regex '$OPT_REGEX_WERF_TUF_ROOT_VERSION'" -- \
"werf TUF-repository root version. Default: $OPT_DEFAULT_WERF_TUF_ROOT_VERSION. Allowed values regex: $OPT_REGEX_WERF_TUF_ROOT_VERSION"
param OPT_WERF_TUF_ROOT_SHA --werf-tuf-root-sha validate:"validate_option_by_regex '$OPT_REGEX_WERF_TUF_ROOT_SHA'" -- \
"werf TUF-repository root SHA-hash. Default: $OPT_DEFAULT_WERF_TUF_ROOT_SHA. Allowed values regex: $OPT_REGEX_WERF_TUF_ROOT_SHA"
disp :usage -h --help
}
validate_option_by_regex() {
declare value="$OPTARG"
declare valid_regex="$1"
[[ $value =~ $valid_regex ]] || return 1
}
validate_bash_version() {
declare required_bash_version="$1"
declare current_bash_version="${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}.${BASH_VERSINFO[2]}"
compare_versions "$current_bash_version" "$required_bash_version"
[[ $? -gt 1 ]] && abort "Bash version must be at least \"$required_bash_version\"."
}
validate_git_version() {
declare required_git_version="$1"
declare current_git_version
current_git_version="$(git --version | awk '{print $3}' | awk -F. '{printf("%s.%s.%s", $1, $2, $3)}')" || abort "Unable to parse git version."
compare_versions "$current_git_version" "$required_git_version"
case $? in
1) log::info "Current version is greater than or equal to required version." ;;
2) abort "Git version must be at least \"$required_git_version\"." ;;
0) log::info "Versions are equal." ;;
*) abort "Unexpected error comparing versions." ;;
esac
}
get_arch() {
declare arch
arch="$(uname -m)" || abort "Can't get system architecture."
case "$arch" in
x86_64) arch="amd64" ;;
arm64 | armv8* | aarch64*) arch="arm64" ;;
i386 | i486 | i586 | i686) abort "werf is not available for x86 architecture." ;;
arm | armv7*) abort "werf is not available for 32-bit ARM architectures." ;;
*) abort "werf is not available for \"$arch\" architecture." ;;
esac
printf '%s' "$arch"
}
get_os() {
declare os
os="$(uname | tr '[:upper:]' '[:lower:]')" || abort "Can't detect OS."
case "$os" in
linux*) os="linux" ;;
darwin*) os="darwin" ;;
msys* | cygwin* | mingw* | nt | win*) abort "This installer does not support Windows." ;;
*) abort "Unknown OS." ;;
esac
printf '%s' "$os"
}
set_shell() {
shell="$(printf '%s' "$SHELL" | rev | cut -d'/' -f1 | rev)" || abort "Can't determine login shell."
declare default_shell="$shell"
declare answer
while :; do
case "$shell" in
bash | zsh)
printf '[INPUT REQUIRED] Current login shell is "%s". Press ENTER to setup werf for this shell or choose another one.\n[b]ash/[z]sh/[a]bort? Default: %s.\n' "$shell" "$default_shell"
;;
*)
default_shell="bash"
printf '[INPUT REQUIRED] Current login shell is "%s". This shell is unsupported. Choose another shell or abort installation.\n[b]ash/[z]sh/[a]bort? Default: %s.\n' "$shell" "$default_shell"
;;
esac
if [[ $OPT_INTERACTIVE == "no" ]]; then
answer=""
else
read -r answer
fi
case "${answer:-$default_shell}" in
[bB] | [bB][aA][sS][hH])
shell="bash"
break
;;
[zZ] | [zZ][sS][hH])
shell="zsh"
break
;;
[aA] | [aA][bB][oO][rR][tT])
printf 'Aborted by the user.\n' 1>&2
exit 0
;;
*)
printf 'Invalid choice, please retry.\n' 1>&2
continue
;;
esac
done
}
propose_joining_docker_group() {
declare override_join_docker_group="$1"
[[ $override_join_docker_group == "no" ]] && return 0
if is_command_exists docker; then
is_user_in_group "$(get_user)" docker && return 0
is_root && return 0
ensure_cmds_available usermod
if [[ $override_join_docker_group == "auto" ]]; then
prompt_yes_no_skip 'werf needs access to the Docker daemon. Add current user to the "docker" group? (root required)' "yes" || return 0
fi
run_as_root "usermod -aG docker '$(get_user)'" || abort "Can't add user \"$(get_user)\" to group \"docker\"."
else
return 0
fi
}
setup_trdl_bin_path() {
declare shell="$1"
declare override_setup_trdl_bin_path="$2"
[[ $override_setup_trdl_bin_path == "no" ]] && return 0
case "$shell" in
bash)
declare active_bash_profile_file="$(get_active_bash_profile_file)"
if [[ $override_setup_trdl_bin_path == "auto" ]]; then
prompt_yes_no_skip "trdl is going to be installed in \"$HOME/bin/\". Add this directory to your \$PATH in \"$HOME/.bashrc\" and \"$active_bash_profile_file\"? (strongly recommended)" "yes" || return 0
fi
add_trdl_bin_path_setup_to_file "$HOME/.bashrc"
add_trdl_bin_path_setup_to_file "$active_bash_profile_file"
;;
zsh)
declare active_zsh_profile_file="$(get_active_zsh_profile_file)"
if [[ $override_setup_trdl_bin_path == "auto" ]]; then
prompt_yes_no_skip "trdl is going to be installed in \"$HOME/bin/\". Add this directory to your \$PATH in \"$HOME/.zshrc\" and \"$active_zsh_profile_file\"? (strongly recommended)" "yes" || return 0
fi
add_trdl_bin_path_setup_to_file "$HOME/.zshrc"
add_trdl_bin_path_setup_to_file "$active_zsh_profile_file"
;;
*) abort "Shell \"$shell\" is not supported." ;;
esac
}
add_trdl_bin_path_setup_to_file() {
declare file="$1"
declare path_append_cmd='[[ "$PATH" == *"$HOME/bin:"* ]] || export PATH="$HOME/bin:$PATH"'
grep -qsxF -- "$path_append_cmd" "$file" && log::info "Skipping adding \"$HOME/bin/\" to \$PATH in \"$file\": already added." && return 0
append_line_to_file "$path_append_cmd" "$file"
}
install_trdl() {
declare os="$1"
declare arch="$2"
declare trdl_tuf_repo="$3"
declare trdl_gpg_pubkey_url="$4"
declare trdl_version="$5"
declare skip_signature_verification="$6"
is_trdl_installed_and_up_to_date "$trdl_version" && log::info "Skipping trdl installation: already installed in \"$HOME/bin/\"." && return 0
log::info "Installing trdl to \"$HOME/bin/\"."
mkdir -p "$HOME/bin" || abort "Can't create \"$HOME/bin\" directory."
declare tmp_dir
tmp_dir="$(mktemp -d)" || abort "Can't create temporary directory."
download "${trdl_tuf_repo}/targets/releases/${trdl_version}/${os}-${arch}/bin/trdl" "$tmp_dir/trdl"
download "${trdl_tuf_repo}/targets/signatures/${trdl_version}/${os}-${arch}/bin/trdl.sig" "$tmp_dir/trdl.sig"
if [[ $skip_signature_verification == "no" ]]; then
log::info "Verifying trdl binary signatures."
download "$trdl_gpg_pubkey_url" "$tmp_dir/trdl.pub"
gpg -q --import <"$tmp_dir/trdl.pub" || abort "Can't import trdl public gpg key."
gpg -q --verify "$tmp_dir/trdl.sig" "$tmp_dir/trdl" || abort "Can't verify trdl binary with a gpg signature."
fi
install "$tmp_dir/trdl" "$HOME/bin" || abort "Can't install trdl binary from \"$tmp_dir/trdl\" to \"$HOME/bin\"."
rm -rf "$tmp_dir" 2>/dev/null
}
is_trdl_installed_and_up_to_date() {
declare required_trdl_version="$1"
[[ -x "$HOME/bin/trdl" ]] || return 1
declare current_trdl_version
current_trdl_version="$("$HOME/bin/trdl" version 2>/dev/null | cut -c2-)" || return 1
compare_versions "$current_trdl_version" "$required_trdl_version"
test $? -lt 2
return
}
add_trdl_werf_repo() {
declare werf_tuf_repo_url="$1"
declare werf_tuf_repo_root_version="$2"
declare werf_tuf_repo_root_sha="$3"
log::info "Adding werf repo to trdl."
"$HOME/bin/trdl" add werf "$werf_tuf_repo_url" "$werf_tuf_repo_root_version" "$werf_tuf_repo_root_sha" || abort "Can't add \"werf\" repo to trdl."
}
enable_automatic_werf_activation() {
declare shell="$1"
declare override_werf_enable_autoactivation="$2"
declare werf_autoactivate_version="$3"
declare werf_autoactivate_channel="$4"
[[ $override_werf_enable_autoactivation == "no" ]] && return 0
case "$shell" in
bash)
declare active_bash_profile_file="$(get_active_bash_profile_file)"
if [[ $override_werf_enable_autoactivation == "auto" ]]; then
prompt_yes_no_skip "Add automatic werf activation to \"$HOME/.bashrc\" and \"$active_bash_profile_file\"? (recommended for interactive usage, not recommended for CI)" "yes" || return 0
fi
add_automatic_werf_activation_to_file "$HOME/.bashrc" "$werf_autoactivate_version" "$werf_autoactivate_channel"
add_automatic_werf_activation_to_file "$active_bash_profile_file" "$werf_autoactivate_version" "$werf_autoactivate_channel"
;;
zsh)
declare active_zsh_profile_file="$(get_active_zsh_profile_file)"
if [[ $override_werf_enable_autoactivation == "auto" ]]; then
prompt_yes_no_skip "Add automatic werf activation to \"$HOME/.zshrc\" and \"$active_zsh_profile_file\"? (recommended for interactive usage, not recommended for CI)" "yes" || return 0
fi
add_automatic_werf_activation_to_file "$HOME/.zshrc" "$werf_autoactivate_version" "$werf_autoactivate_channel"
add_automatic_werf_activation_to_file "$active_zsh_profile_file" "$werf_autoactivate_version" "$werf_autoactivate_channel"
;;
*) abort "Shell \"$shell\" is not supported." ;;
esac
}
add_automatic_werf_activation_to_file() {
declare file="$1"
declare werf_autoactivate_version="$2"
declare werf_autoactivate_channel="$3"
declare werf_activation_cmd_grep1="trdl use werf"
declare werf_activation_cmd_grep2="trdl\" use werf"
declare werf_activation_cmd="! { which werf | grep -qsE \"^$HOME/.trdl/\"; } && [[ -x \"\$HOME/bin/trdl\" ]] && source \$(\"\$HOME/bin/trdl\" use werf \"$werf_autoactivate_version\" \"$werf_autoactivate_channel\")"
if grep -qsF -- "$werf_activation_cmd_grep1" "$file" || \
grep -qsF -- "$werf_activation_cmd_grep2" "$file"; then
log::info "Skipping adding werf activation to \"$file\": already found \"trdl use werf\" command."
return 0
fi
append_line_to_file "$werf_activation_cmd" "$file"
}
get_active_bash_profile_file() {
declare result="$HOME/.bash_profile"
for file in "$HOME/.bash_profile" "$HOME/.bash_login" "$HOME/.profile"; do
[[ -r $file ]] && result="$file" && break
done
printf '%s' "$result"
}
get_active_zsh_profile_file() {
declare result="$HOME/.zprofile"
for file in "$HOME/.zprofile" "$HOME/.zlogin"; do
[[ -r $file ]] && result="$file" && break
done
printf '%s' "$result"
}
finalize() {
declare werf_autoactivate_version="$1"
declare werf_autoactivate_channel="$2"
log::info "werf installation finished successfully!"
log::info "Open new shell session if you have enabled werf autoactivation or activate werf manually with:\n$ source \$(\"$HOME/bin/trdl\" use werf \"$werf_autoactivate_version\" \"$werf_autoactivate_channel\")"
}
append_line_to_file() {
declare line="$1"
declare file="$2"
create_file "$file"
declare append_cmd="tee -a '$file' <<< '$line' 1>/dev/null"
[[ -w $file ]] || append_cmd="run_as_root '$append_cmd'"
eval $append_cmd || abort "Can't append line \"$line\" to file \"$file\"."
}
create_file() {
declare file="$1"
[[ -e $file ]] && return 0
declare stderr
if ! stderr="$(touch "$file" 1>/dev/null 2>&1)" && [[ $stderr == *"Permission denied"* ]]; then
run_as_root "touch '$file'" || abort "Unable to create file \"$file\"."
fi
}
download() {
declare url="$1"
declare path="$2"
declare download_cmd
if is_command_exists wget; then
download_cmd="wget -qO '$path' '$url'"
elif is_command_exists curl; then
download_cmd="curl -sSLo '$path' '$url'"
else
abort 'Neither "wget" nor "curl" available. Install and retry.'
fi
eval $download_cmd || abort "Unable to download \"$url\" to \"$path\"."
}
is_user_in_group() {
declare user="$1"
declare group="$2"
id -nG "$user" 2>/dev/null | grep -wqs "$group"
return
}
ensure_cmds_available() {
declare cmd
for cmd in "${@}"; do
is_command_exists "$cmd" || abort "\"$cmd\" required but not available."
done
}
run_as_root() {
declare cmd="$1"
if is_root; then
eval $cmd || return 1
else
[[ $OPT_INTERACTIVE == "no" ]] && log::warn "Non-interactive mode enabled, but current user doesn't have enough privilege, so the next command will be called with sudo (this might hang): sudo $cmd"
ensure_cmds_available sudo
eval sudo $cmd || return 1
fi
return 0
}
get_user() {
id -un
}
is_root() {
test "$(id -u)" -eq 0
return
}
is_command_exists() {
declare command="$1"
command -v "$command" 1>/dev/null 2>&1
return
}
# Returns 0 if answer is "yes".
# Returns 1 if answer is "skip".
# Aborts if answer is "abort".
# Returns exit code corresponding to the $def_arg if non-interactive.
prompt_yes_no_skip() {
declare prompt_msg="$1"
declare def_arg="$2"
case "$def_arg" in
[yY] | [yY][eE][sS])
def_arg="yes"
;;
[aA] | [aA][bB][oO][rR][tT])
def_arg="abort"
;;
[sS] | [sS][kK][iI][pP])
def_arg="skip"
;;
esac
declare answer
while :; do
printf '[INPUT REQUIRED] %s\n[y]es/[a]bort/[s]kip? Default: %s.\n' "$prompt_msg" "$def_arg"
if [[ $OPT_INTERACTIVE == "no" ]]; then
answer=""
else
read -r answer
fi
case "${answer:-$def_arg}" in
[yY] | [yY][eE][sS])
return 0
;;
[aA] | [aA][bB][oO][rR][tT])
printf 'Aborted by the user.\n'
exit 0
;;
[sS] | [sS][kK][iI][pP])
return 1
;;
*)
printf 'Invalid choice, please retry.\n'
continue
;;
esac
done
}
# Returns 0 if versions equal.
# Returns 1 if $version1 is greater than $version2.
# Returns 2 if $version1 is less than $version2.
compare_versions() {
declare version1="$1"
declare version2="$2"
for ver in "$version1" "$version2"; do
[[ $ver =~ ^[.0-9]*$ ]] || abort "Invalid version passed to compare_versions(): $ver"
done
[[ $version1 == "$version2" ]] && return 0
declare IFS=.
declare -a ver1 ver2
read -r -a ver1 <<<"$version1"
read -r -a ver2 <<<"$version2"
for ((i = ${#ver1[@]}; i < ${#ver2[@]}; i++)); do
ver1[i]=0
done
for ((i = 0; i < ${#ver1[@]}; i++)); do
if [[ -z ${ver2[i]} ]]; then
ver2[i]=0
fi
if ((10#${ver1[i]} > 10#${ver2[i]})); then
return 1
fi
if ((10#${ver1[i]} < 10#${ver2[i]})); then
return 2
fi
done
return 0
}
install_werf_system_dependencies() {
local override_install_werf_system_dependencies="$1"
[[ $override_install_werf_system_dependencies == "no" ]] && return 0
if [[ $override_install_werf_system_dependencies == "auto" ]]; then
prompt_yes_no_skip "Install system dependencies for werf?" "skip" || return 0
fi
local missing_packages=""
is_command_exists git || missing_packages="$missing_packages git"
is_command_exists curl || missing_packages="$missing_packages curl"
is_command_exists gpg || missing_packages="$missing_packages gpg"
if [ "$missing_packages" == "" ]; then
return 0
fi
install_package "$missing_packages"
}
setup_buildah() {
local override_setup_buildah="$1"
[[ $override_setup_buildah == "no" ]] && return 0
if [[ $override_setup_buildah == "auto" ]]; then
prompt_yes_no_skip "Install and set up Buildah backend?" "skip" || return 0
fi
is_command_exists buildah || install_buildah
if is_command_exists sysctl; then
# Check if kernel.unprivileged_userns_clone exists
if ! [ -z "$(sysctl -ne kernel.unprivileged_userns_clone)" ]; then
KERNEL_SETTING="$(sysctl -ne kernel.unprivileged_userns_clone)"
if [ "$KERNEL_SETTING" = "0" ]; then
echo 'kernel.unprivileged_userns_clone = 1' | run_as_root "tee -a /etc/sysctl.conf"
run_as_root "sysctl -w kernel.unprivileged_userns_clone=1"
log::info "Updated kernel.unprivileged_userns_clone value"
fi
fi
# Check if kernel.apparmor_restrict_unprivileged_userns exists
if ! [ -z "$(sysctl -ne kernel.apparmor_restrict_unprivileged_userns)" ]; then
KERNEL_APPARMOR="$(sysctl -ne kernel.apparmor_restrict_unprivileged_userns)"
if [ "$KERNEL_APPARMOR" = "1" ]; then
log::info "Set kernel.apparmor_restrict_unprivileged_userns to 0"
echo "kernel.apparmor_restrict_unprivileged_userns = 0" | run_as_root "tee -a /etc/sysctl.conf" \ &&
run_as_root "sysctl -w kernel.apparmor_restrict_unprivileged_userns=0"
fi
fi
# Check the sysctl value: user.max_user_namespaces
USER_NAMESPACES_SETTING="$(sysctl -n user.max_user_namespaces)"
if [[ "$USER_NAMESPACES_SETTING" < "15000" ]]; then
echo 'user.max_user_namespaces = 15000' | run_as_root "tee -a /etc/sysctl.conf"
run_as_root "sysctl -w user.max_user_namespaces=15000"
log::info "Updated user.max_user_namespaces value"
fi
else
log::warn "sysctl not found"
fi
}
get_linux_distro() {
declare distro
if [[ -f /etc/os-release ]]; then
. "/etc/os-release"
distro="$NAME"
elif type lsb_release 1>/dev/null 2>&1; then
distro="$(lsb_release -si)"
elif [[ -f "/etc/lsb-release" ]]; then
. "/etc/lsb-release"
distro="$DISTRIB_ID"
elif [[ -f "/etc/debian_version" ]]; then
distro="debian"
elif [[ -f "/etc/SuSe-release" ]]; then
distro="suse"
elif [[ -f "/etc/redhat-release" ]]; then
distro="redhat"
else
abort "Unable to detect Linux distro."
fi
echo "$distro"
}
install_package() {
local package="$1"
distro=$(get_linux_distro)
log::info "Detected Linux distribution: $distro"
case "$distro" in
*CentOS*|*Red\ Hat*|*Fedora*)
run_as_root "yum -y install $package"
;;
*Debian*|*Ubuntu*)
run_as_root "apt-get -y update"
run_as_root "DEBIAN_FRONTEND=noninteractive apt-get -y install $package"
;;
*SUSE*|*openSUSE*)
run_as_root "zypper install $package"
;;
*RHEL*)
if [[ "$distro" == *"7"* ]]; then
run_as_root "yum -y install $package"
elif [[ "$distro" == *"8"* ]]; then
run_as_root "dnf module install -y $package"
fi
;;
*)
abort "Unsupported distribution: $distro"
;;
esac
}
install_buildah(){
distro=$(get_linux_distro)
log::info "Installing Buildah and configuring user namespaces..."
case "$distro" in
*Debian*|*Ubuntu*)
install_package "buildah uidmap"
;;
*CentOS*|*Red\ Hat*|*Fedora*)
run_as_root "yum groupinstall -y 'Development Tools'"
install_package "curl-devel expat-devel gettext-devel openssl-devel zlib-devel perl autoconf"
;;
*SUSE*|*openSUSE*)
install_package "buildah shadow"
;;
*RHEL*)
if [[ "$distro" == *"8"* ]]; then
run_as_root "dnf module enable -y container-tools:2.0"
install_package "buildah uidmap"
elif [[ "$distro" == *"7"* ]]; then
run_as_root "subscription-manager repos --enable=rhel-7-server-extras-rpms"
install_package "buildah uidmap"
fi
;;
*)
abort "Unsupported distribution."
;;
esac
set_user_subuids_subgids
# Migrate Podman system if applicable
if is_command_exists podman; then
log::info "Migrating Podman system configuration..."
run_as_root "podman system migrate"
fi
log::info "Buildah installation and configuration completed."
}
get_free_range() {
local start=100000
local end=6000000
local range_size=65536
local used_ranges
if [[ -s /etc/subuid || -s /etc/subgid ]]; then
used_ranges=$(awk -F: '{print $2 ":" $3}' /etc/subuid /etc/subgid 2>/dev/null | sort -n)
else
echo "$start:$range_size"
return 0
fi
while read -r range; do
local range_start range_size_in_use
range_start=$(echo "$range" | cut -d: -f1)
range_size_in_use=$(echo "$range" | cut -d: -f2)
local range_end=$((range_start + range_size_in_use - 1))
if ((start + range_size - 1 < range_start)); then
echo "$start:$range_size"
return 0
fi
start=$((range_end + 1))
done <<< "$used_ranges"
echo "$start:$range_size"
return 0
}
set_user_subuids_subgids() {
local min_range_size=65536
local current_user=$(get_user)
local free_range=$(get_free_range)
if grep -q "^$current_user:" /etc/subuid; then
local current_range=$(awk -F: -v user="$current_user" '$1 == user {print $3}' /etc/subuid)
if (( current_range < min_range_size )); then
abort "User $current_user has a subuid range smaller than $min_range_size. Please adjust it manually."
else
log::info "User $current_user already has a valid subuid range."
fi
else
echo "$current_user:$free_range" | run_as_root "tee -a /etc/subuid"
log::info "Assigned subuid range $free_range to user $current_user."
fi
if grep -q "^$current_user:" /etc/subgid; then
local current_range=$(awk -F: -v user="$current_user" '$1 == user {print $3}' /etc/subgid)
if (( current_range < min_range_size )); then
abort "User $current_user has a subgid range smaller than $min_range_size. Please adjust it manually."
else
log::info "User $current_user already has a valid subgid range."
fi
else
echo "$current_user:$free_range" | run_as_root "tee -a /etc/subgid"
log::info "Assigned subgid range $free_range to user $current_user."
fi
}
log::info() {
declare msg="$1"
printf '[INFO] %b\n' "$msg"
}
log::warn() {
declare msg="$1"
printf '[WARNING] %b\n' "$msg" >&2
}
log::err() {
declare msg="$1"
printf '[ERROR] %b\n' "$msg" >&2
}
abort() {
declare msg="$1"
printf '[FATAL] %b\n' "$msg" >&2
printf '[FATAL] Aborting.\n' >&2
exit 1
}
# Author of this function: ko1nksm (Koichi Nakashima)
# License of this function: CC0-1.0 License https://github.com/ko1nksm/getoptions/blob/v3.3.0/LICENSE
getoptions() {
_error='' _on=1 _no='' _export='' _plus='' _mode='' _alt='' _rest='' _def=''
_flags='' _nflags='' _opts='' _help='' _abbr='' _cmds='' _init=@empty IFS=' '
[ $# -lt 2 ] && set -- "${1:?No parser definition}" -
[ "$2" = - ] && _def=getoptions_parse
i=' '
while eval "_${#i}() { echo \"$i\$@\"; }"; [ "$i" ]; do i=${i#?}; done
quote() {
q="$2'" r=''
while [ "$q" ]; do r="$r${q%%\'*}'\''" && q=${q#*\'}; done
q="'${r%????}'" && q=${q#\'\'} && q=${q%\'\'}
eval "$1=\${q:-\"''\"}"
}
code() {
[ "${1#:}" = "$1" ] && c=3 || c=4
eval "[ ! \${$c:+x} ] || $2 \"\$$c\""
}
sw() { sw="$sw${sw:+|}$1"; }
kv() { eval "${2-}${1%%:*}=\${1#*:}"; }
loop() { [ $# -gt 1 ] && [ "$2" != -- ]; }
invoke() { eval '"_$@"'; }
prehook() { invoke "$@"; }
for i in setup flag param option disp msg; do
eval "$i() { prehook $i \"\$@\"; }"
done
args() {
on=$_on no=$_no export=$_export init=$_init _hasarg=$1 && shift
while loop "$@" && shift; do
case $1 in
-?) [ "$_hasarg" ] && _opts="$_opts${1#-}" || _flags="$_flags${1#-}" ;;
+?) _plus=1 _nflags="$_nflags${1#+}" ;;
[!-+]*) kv "$1"
esac
done
}
defvar() {
case $init in
@none) : ;;
@export) code "$1" _0 "export $1" ;;
@empty) code "$1" _0 "${export:+export }$1=''" ;;
@unset) code "$1" _0 "unset $1 ||:" "unset OPTARG ||:; ${1#:}" ;;
*)
case $init in @*) eval "init=\"=\${${init#@}}\""; esac
case $init in [!=]*) _0 "$init"; return 0; esac
quote init "${init#=}"
code "$1" _0 "${export:+export }$1=$init" "OPTARG=$init; ${1#:}"
esac
}
_setup() {
[ "${1#-}" ] && _rest=$1
while loop "$@" && shift; do kv "$1" _; done
}
_flag() { args '' "$@"; defvar "$@"; }
_param() { args 1 "$@"; defvar "$@"; }
_option() { args 1 "$@"; defvar "$@"; }
_disp() { args '' "$@"; }
_msg() { args '' _ "$@"; }
cmd() { _mode=@ _cmds="$_cmds${_cmds:+|}'$1'"; }
"$@"
cmd() { :; }
_0 "${_rest:?}=''"
_0 "${_def:-$2}() {"
_1 'OPTIND=$(($#+1))'
_1 'while OPTARG= && [ $# -gt 0 ]; do'
[ "$_abbr" ] && getoptions_abbr "$@"
args() {
sw='' validate='' pattern='' counter='' on=$_on no=$_no export=$_export
while loop "$@" && shift; do
case $1 in
--\{no-\}*) i=${1#--?no-?}; sw "'--$i'|'--no-$i'" ;;
--with\{out\}-*) i=${1#--*-}; sw "'--with-$i'|'--without-$i'" ;;
[-+]? | --*) sw "'$1'" ;;
*) kv "$1"
esac
done
quote on "$on"
quote no "$no"
}
setup() { :; }
_flag() {
args "$@"
[ "$counter" ] && on=1 no=-1 v="\$((\${$1:-0}+\$OPTARG))" || v=''
_3 "$sw)"
_4 '[ "${OPTARG:-}" ] && OPTARG=${OPTARG#*\=} && set "noarg" "$1" && break'
_4 "eval '[ \${OPTARG+x} ] &&:' && OPTARG=$on || OPTARG=$no"
valid "$1" "${v:-\$OPTARG}"
_4 ';;'
}
_param() {
args "$@"
_3 "$sw)"
_4 '[ $# -le 1 ] && set "required" "$1" && break'
_4 'OPTARG=$2'
valid "$1" '$OPTARG'
_4 'shift ;;'
}
_option() {
args "$@"
_3 "$sw)"
_4 'set -- "$1" "$@"'
_4 '[ ${OPTARG+x} ] && {'
_5 'case $1 in --no-*|--without-*) set "noarg" "${1%%\=*}"; break; esac'
_5 '[ "${OPTARG:-}" ] && { shift; OPTARG=$2; } ||' "OPTARG=$on"
_4 "} || OPTARG=$no"
valid "$1" '$OPTARG'
_4 'shift ;;'
}
valid() {
set -- "$validate" "$pattern" "$1" "$2"
[ "$1" ] && _4 "$1 || { set -- ${1%% *}:\$? \"\$1\" $1; break; }"
[ "$2" ] && {
_4 "case \$OPTARG in $2) ;;"
_5 '*) set "pattern:'"$2"'" "$1"; break'
_4 "esac"
}
code "$3" _4 "${export:+export }$3=\"$4\"" "${3#:}"
}
_disp() {
args "$@"
_3 "$sw)"
code "$1" _4 "echo \"\${$1}\"" "${1#:}"
_4 'exit 0 ;;'
}
_msg() { :; }
[ "$_alt" ] && _2 'case $1 in -[!-]?*) set -- "-$@"; esac'
_2 'case $1 in'
_wa() { _4 "eval 'set -- $1' \${1+'\"\$@\"'}"; }
_op() {
_3 "$1) OPTARG=\$1; shift"
_wa '"${OPTARG%"${OPTARG#??}"}" '"$2"'"${OPTARG#??}"'
_4 "$3"
}
_3 '--?*=*) OPTARG=$1; shift'
_wa '"${OPTARG%%\=*}" "${OPTARG#*\=}"'
_4 ';;'
_3 '--no-*|--without-*) unset OPTARG ;;'
[ "$_alt" ] || {
[ "$_opts" ] && _op "-[$_opts]?*" '' ';;'
[ ! "$_flags" ] || _op "-[$_flags]?*" - 'OPTARG= ;;'
}
[ "$_plus" ] && {
[ "$_nflags" ] && _op "+[$_nflags]?*" + 'unset OPTARG ;;'
_3 '+*) unset OPTARG ;;'
}
_2 'esac'
_2 'case $1 in'
"$@"
rest() {
_4 'while [ $# -gt 0 ]; do'
_5 "$_rest=\"\${$_rest}" '\"\${$(($OPTIND-$#))}\""'
_5 'shift'
_4 'done'
_4 'break ;;'
}
_3 '--)'
[ "$_mode" = @ ] || _4 'shift'
rest