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virtual-dsm/src/utils.sh
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#!/usr/bin/env bash
set -Eeuo pipefail
# Helper functions
info () { printf "%b%s%b" "\E[1;34m \E[1;36m" "${1:-}" "\E[0m\n"; }
error () { printf "%b%s%b" "\E[1;31m " "ERROR: ${1:-}" "\E[0m\n" >&2; }
warn () { printf "%b%s%b" "\E[1;31m " "Warning: ${1:-}" "\E[0m\n" >&2; }
hasFlag() {
# Match a whitespace-delimited token in /proc/cpuinfo
grep -m1 '^flags[[:space:]]*:' /proc/cpuinfo | grep -Fqw -- "$1"
}
hasFeature() {
# Match a whitespace-delimited token in /proc/cpuinfo
grep -m1 '^Features[[:space:]]*:' /proc/cpuinfo | grep -Fqw -- "$1"
}
isAmdCpu() {
local vendor
vendor=$(awk -F ': *' '/^vendor_id/{print $2; exit}' /proc/cpuinfo)
[[ "$vendor" == "AuthenticAMD" ]]
}
interactive() {
[ -t 0 ] && : 2>/dev/null </dev/tty >/dev/tty
}
strip() {
local value="${1:-}"
# Remove surrounding whitespace
value="${value#"${value%%[![:space:]]*}"}"
value="${value%"${value##*[![:space:]]}"}"
# Remove leading/trailing single/double quotes
value="${value%\"}"
value="${value#\"}"
value="${value%\'}"
value="${value#\'}"
# Remove surrounding whitespace again
value="${value#"${value%%[![:space:]]*}"}"
value="${value%"${value##*[![:space:]]}"}"
printf '%s' "$value"
}
enabled() {
local value
value=$(strip "${1:-}")
case "${value,,}" in
y|yes|true|1|on|enable|enabled) return 0 ;;
*) return 1 ;;
esac
}
disabled() {
local value
value=$(strip "${1:-}")
case "${value,,}" in
n|no|none|false|0|off|disable|disabled) return 0 ;;
*) return 1 ;;
esac
}
formatBytes() {
local result
if ! result=$(numfmt --to=iec --suffix=B "$1" | sed -r 's/([A-Z])/ \1/' | sed 's/ B/ bytes/g;'); then
return 1
fi
local unit="${result//[0-9. ]}"
result="${result//[a-zA-Z ]/}"
if [[ "${2:-}" == "up" ]]; then
if [[ "$result" == *"."* ]]; then
result="${result%%.*}"
result=$((result+1))
fi
else
if [[ "${2:-}" == "down" ]]; then
result="${result%%.*}"
fi
fi
echo "$result $unit"
return 0
}
isAlive() {
local pid="$1"
[ -z "$pid" ] && return 1
if kill -0 "$pid" 2>/dev/null; then
return 0
fi
return 1
}
waitPid() {
local i=0
local pid="$1"
local timeout="${2:-10}"
while [ -n "$pid" ] && isAlive "$pid"; do
sleep 0.2
i=$((i + 1))
(( i >= timeout * 5 )) && return 1
done
return 0
}
waitPidFile() {
local i=0
local pid=""
local file="$1"
local timeout="${2:-10}"
[ ! -s "$file" ] && return 0
! read -r pid <"$file" && return 0
[ -z "$pid" ] && return 0
while [ -s "$file" ] && isAlive "$pid"; do
sleep 0.2
i=$((i + 1))
(( i >= timeout * 5 )) && return 1
done
rm -f -- "$file"
return 0
}
pKill() {
local pid="$1"
local timeout="${2:-10}"
{ kill -15 -- "$pid" || :; } 2>/dev/null
if ! waitPid "$pid" "$timeout"; then
warn "Timed out while waiting for PID $pid"
fi
return 0
}
fWait() {
local i=0
local name="$1"
local timeout="${2:-10}"
[ -z "$name" ] && return 0
while pgrep -f -l "$name" >/dev/null; do
sleep 0.2
i=$((i + 1))
if (( i >= timeout * 5 )); then
warn "Timed out while waiting for process: $name"
break
fi
done
return 0
}
fKill() {
local name="$1"
local timeout="${2:-10}"
[ -z "$name" ] && return 0
{ pkill -f "$name" || :; } 2>/dev/null
fWait "$name" "$timeout"
return 0
}
sKill() {
local pid=""
local file="$1"
[ ! -s "$file" ] && return 0
! read -r pid <"$file" && return 0
[ -z "$pid" ] && return 0
if isAlive "$pid"; then
{ kill -15 -- "$pid" || :; } 2>/dev/null
fi
return 0
}
mKill() {
local timeout=10
local files=("$@")
for file in "${files[@]}"; do
sKill "$file"
done
for file in "${files[@]}"; do
if ! waitPidFile "$file" "$timeout"; then
warn "Timed out while waiting for PID file: $file"
fi
done
return 0
}
setOwner() {
local file="$1"
local dir uid gid
[ ! -f "$file" ] && return 1
dir=$(dirname -- "$file")
uid=$(stat -c '%u' "$dir") || return 1
gid=$(stat -c '%g' "$dir") || return 1
! chown "$uid:$gid" "$file" && return 1
return 0
}
makeDir() {
local path="$1"
local dir uid gid
[ -d "$path" ] && return 0
! mkdir -p "$path" && return 1
dir=$(dirname -- "$path")
if ! uid=$(stat -c '%u' "$dir") || ! gid=$(stat -c '%g' "$dir"); then
warn "failed to determine the owner for \"$path\"."
return 0
fi
if ! chown "$uid:$gid" "$path"; then
warn "failed to set the owner for \"$path\"."
return 0
fi
return 0
}
stateFile() {
local name="$1"
local prefix="${2:-$PROCESS}"
[[ "$name" == */* ]] && printf '%s\n' "$name" && return 0
printf '%s/%s.%s\n' "$STORAGE" "$prefix" "$name"
return 0
}
writeFile() {
local txt="$1"
local path="$2"
if ! printf '%s\n' "$txt" > "$path"; then
error "Failed to write file \"$path\" !"
return 1
fi
if ! setOwner "$path"; then
warn "failed to set the owner for \"$path\"."
fi
return 0
}
readFile() {
local path="$1"
local value
[ -s "$path" ] || return 0
value=$(<"$path") || return 1
value="${value//[![:print:]]/}"
printf '%s\n' "$value"
return 0
}
writeState() {
local name="$1"
local value="$2"
local prefix="${3:-$PROCESS}"
local path
[ -z "$value" ] && return 0
path=$(stateFile "$name" "$prefix") || return 1
writeFile "$value" "$path"
return $?
}
readState() {
local name="$1"
local prefix="${2:-$PROCESS}"
local path
path=$(stateFile "$name" "$prefix") || return 1
readFile "$path"
return $?
}
restoreState() {
local var="$1"
local name="$2"
local force="${3:-N}"
local prefix="${4:-$PROCESS}"
local value
if ! enabled "$force"; then
[ -z "${!var:-}" ] || return 0
fi
value=$(readState "$name" "$prefix") || return 1
[ -n "$value" ] || return 0
printf -v "$var" '%s' "$value" || return 1
return 0
}
escape () {
local s
s=${1//&/\&amp;}
s=${s//</\&lt;}
s=${s//>/\&gt;}
s=${s//'"'/\&quot;}
printf -- %s "$s"
return 0
}
escapeXML() {
printf '%s' "$1" | sed \
-e 's/&/\&amp;/g' \
-e 's/</\&lt;/g' \
-e 's/>/\&gt;/g' \
-e 's/"/\&quot;/g' \
-e "s/'/\&apos;/g"
return 0
}
html() {
local title
local body
local script
local footer
title=$(escape "$APP")
title="<title>$title</title>"
footer=$(escape "$FOOTER1")
body=$(escape "$1")
if [[ "$body" == *"..." ]]; then
body="<p class=\"loading\">${body/.../}</p>"
fi
[ -n "${2:-}" ] && script="$2" || script=""
local HTML
HTML=$(<"$TEMPLATE")
HTML="${HTML/\[1\]/$title}"
HTML="${HTML/\[2\]/$script}"
HTML="${HTML/\[3\]/$body}"
HTML="${HTML/\[4\]/$footer}"
HTML="${HTML/\[5\]/$FOOTER2}"
echo "$HTML" > "$PAGE" || return 1
echo "$body" > "$INFO" || return 1
return 0
}
cpu() {
local ret
local cpu=""
ret=$(lscpu)
if grep -qi "model name" <<< "$ret"; then
cpu=$(echo "$ret" | grep -m 1 -i 'model name' | cut -f 2 -d ":" | awk '{$1=$1}1' | sed 's# @.*##g' | sed s/"(R)"//g | sed 's/[^[:alnum:] ]\+/ /g' | sed 's/ */ /g')
fi
if [ -z "${cpu// /}" ] && grep -qi "model:" <<< "$ret"; then
cpu=$(echo "$ret" | grep -m 1 -i 'model:' | cut -f 2 -d ":" | awk '{$1=$1}1' | sed 's# @.*##g' | sed s/"(R)"//g | sed 's/[^[:alnum:] ]\+/ /g' | sed 's/ */ /g')
fi
cpu="${cpu// CPU/}"
cpu="${cpu// [0-9][0-9][0-9] Core}"
cpu="${cpu// [0-9][0-9] Core}"
cpu="${cpu// [0-9] Core}"
cpu="${cpu//[0-9][0-9]th Gen }"
cpu="${cpu//[0-9]th Gen }"
cpu="${cpu// Processor/}"
cpu="${cpu// Quad core/}"
cpu="${cpu// Dual core/}"
cpu="${cpu// Octa core/}"
cpu="${cpu// Hexa core/}"
cpu="${cpu// Core TM/ Core}"
cpu="${cpu// with Radeon Graphics/}"
cpu="${cpu// with Radeon Vega Graphics/}"
cpu="${cpu// with Radeon Vega Mobile Gfx/}"
cpu="${cpu// w Radeon [0-9][0-9][0-9]M Graphics/}"
[ -z "${cpu// /}" ] && cpu="Unknown"
echo "$cpu"
return 0
}
getCountry() {
local url=$1
local query=$2
local rc json result
{ json=$(curl -m 5 -H "Accept: application/json" -sfk "$url"); rc=$?; } || :
(( rc != 0 )) && return 0
{ result=$(echo "$json" | jq -r "$query" 2> /dev/null); rc=$?; } || :
(( rc != 0 )) && return 0
[[ ${#result} -ne 2 ]] && return 0
[[ "${result^^}" == "XX" ]] && return 0
COUNTRY="${result^^}"
return 0
}
setCountry() {
[[ "${TZ,,}" == "asia/harbin" ]] && COUNTRY="CN"
[[ "${TZ,,}" == "asia/beijing" ]] && COUNTRY="CN"
[[ "${TZ,,}" == "asia/urumqi" ]] && COUNTRY="CN"
[[ "${TZ,,}" == "asia/kashgar" ]] && COUNTRY="CN"
[[ "${TZ,,}" == "asia/shanghai" ]] && COUNTRY="CN"
[[ "${TZ,,}" == "asia/chongqing" ]] && COUNTRY="CN"
[ -z "$COUNTRY" ] && getCountry "https://api.ipapi.is" ".location.country_code"
[ -z "$COUNTRY" ] && getCountry "https://ifconfig.co/json" ".country_iso"
[ -z "$COUNTRY" ] && getCountry "https://api.ip2location.io" ".country_code"
[ -z "$COUNTRY" ] && getCountry "https://ipinfo.io/json" ".country"
[ -z "$COUNTRY" ] && getCountry "https://api.ipquery.io/?format=json" ".location.country_code"
[ -z "$COUNTRY" ] && getCountry "https://api.myip.com" ".cc"
return 0
}
addPackage() {
local pkg=$1
local desc=$2
if apt-mark showinstall | grep -qx "$pkg"; then
return 0
fi
MSG="Installing $desc..."
info "$MSG" && html "$MSG"
[ -z "$COUNTRY" ] && setCountry
if [[ "${COUNTRY^^}" == "CN" ]]; then
sed -i 's/deb.debian.org/mirrors.ustc.edu.cn/g' /etc/apt/sources.list.d/debian.sources
fi
DEBIAN_FRONTEND=noninteractive apt-get -qq update || return 1
DEBIAN_FRONTEND=noninteractive apt-get -qq --no-install-recommends -y install "$pkg" > /dev/null || return 1
return 0
}
return 0