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install.sh
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#!/bin/sh
main() {
OS=$(detect_os)
GOARCH=$(detect_goarch)
GOOS=$(detect_goos)
NEXTDNS_BIN=$(bin_location)
INSTALL_RELEASE=$(get_release)
export NEXTDNS_INSTALLER=1
log_info "OS: $OS"
log_info "GOARCH: $GOARCH"
log_info "GOOS: $GOOS"
log_info "NEXTDNS_BIN: $NEXTDNS_BIN"
log_info "INSTALL_RELEASE: $INSTALL_RELEASE"
if [ -z "$OS" ] || [ -z "$GOARCH" ] || [ -z "$GOOS" ] || [ -z "$NEXTDNS_BIN" ] || [ -z "$INSTALL_RELEASE" ]; then
log_error "Cannot detect running environment."
exit 1
fi
case "$RUN_COMMAND" in
install|upgrade|uninstall|configure) "$RUN_COMMAND"; exit ;;
esac
while true; do
CURRENT_RELEASE=$(get_current_release)
log_debug "Start install loop with CURRENT_RELEASE=$CURRENT_RELEASE"
if [ "$CURRENT_RELEASE" ]; then
if ! is_version_current; then
log_debug "NextDNS is out of date ($CURRENT_RELEASE != $INSTALL_RELEASE)"
menu \
u "Upgrade NextDNS from $CURRENT_RELEASE to $INSTALL_RELEASE" upgrade \
c "Configure NextDNS" configure \
r "Remove NextDNS" uninstall \
e "Exit" exit
else
log_debug "NextDNS is up to date ($CURRENT_RELEASE)"
menu \
c "Configure NextDNS" configure \
r "Remove NextDNS" uninstall \
e "Exit" exit
fi
else
log_debug "NextDNS is not installed"
menu \
i "Install NextDNS" install \
e "Exit" exit
fi
done
}
install() {
if [ "$(get_current_release)" ]; then
log_info "Already installed"
return
fi
if type=$(install_type); then
log_info "Installing NextDNS..."
log_debug "Using $type install type"
if "install_$type"; then
if [ ! -x "$NEXTDNS_BIN" ]; then
log_error "Installation failed: binary not installed in $NEXTDNS_BIN"
return 1
fi
configure
post_install
exit 0
fi
else
return $?
fi
}
upgrade() {
if [ "$(get_current_release)" = "$INSTALL_RELEASE" ]; then
log_info "Already on the latest version"
return
fi
if type=$(install_type); then
log_info "Upgrading NextDNS..."
log_debug "Using $type install type"
"upgrade_$type"
else
return $?
fi
}
uninstall() {
if type=$(install_type); then
log_info "Uninstalling NextDNS..."
log_debug "Using $type uninstall type"
"uninstall_$type"
else
return $?
fi
}
configure() {
log_debug "Start configure"
args=""
add_arg() {
for value in $2; do
log_debug "Add arg -$1=$value"
args="$args -$1=$value"
done
}
add_arg_bool_ask() {
arg=$1
msg=$2
default=$3
if [ -z "$default" ]; then
default=$(get_config_bool "$arg")
fi
# shellcheck disable=SC2046
add_arg "$arg" $(ask_bool "$msg" "$default")
}
add_arg config "$(get_config_id)"
doc "Sending your devices name lets you filter analytics and logs by device."
add_arg_bool_ask report-client-info 'Report device name?' true
case $(guess_host_type) in
router)
add_arg setup-router true
;;
unsure)
doc "Accept DNS request from other network hosts."
if [ "$(get_config_bool setup-router)" = "true" ]; then
router_default=true
fi
if [ "$(ask_bool 'Setup as a router?' $router_default)" = "true" ]; then
add_arg setup-router true
fi
;;
esac
doc "Make nextdns CLI cache responses. This improves latency and reduces the amount"
doc "of queries sent to NextDNS."
if [ "$(guess_host_type)" = "router" ]; then
doc "Note that enabling this feature will disable dnsmasq for DNS to avoid double"
doc "caching."
fi
if [ "$(get_config cache-size)" != "0" ]; then
cache_default=true
fi
if [ "$(ask_bool 'Enable caching?' $cache_default)" = "true" ]; then
add_arg cache-size "10MB"
doc "Instant refresh will force low TTL on responses sent to clients so they rely"
doc "on CLI DNS cache. This will allow changes on your NextDNS config to be applied"
doc "on you LAN hosts without having to wait for their cache to expire."
if [ "$(get_config max-ttl)" = "5s" ]; then
instant_refresh_default=true
fi
if [ "$(ask_bool 'Enable instant refresh?' $instant_refresh_default)" = "true" ]; then
add_arg max-ttl "5s"
fi
fi
if [ "$(guess_host_type)" != "router" ]; then
doc "Changes DNS settings of the host automatically when nextdns is started."
doc "If you say no here, you will have to manually configure DNS to 127.0.0.1."
add_arg_bool_ask auto-activate 'Automatically setup local host DNS?' true
fi
# shellcheck disable=SC2086
asroot "$NEXTDNS_BIN" install $args
}
post_install() {
println
println "Congratulations! NextDNS is now installed."
println
println "To upgrade/uninstall, run this command again and select the approriate option."
println
println "You can use the nextdns command to control the daemon."
println "Here is a few important commands to know:"
println
println "# Start, stop, restart the daemon:"
println "nextdns start"
println "nextdns stop"
println "nextdns restart"
println
println "# Configure the local host to point to NextDNS or not:"
println "nextdns activate"
println "nextdns deactivate"
println
println "# Explore daemon logs:"
println "nextdns log"
println
println "# For more commands, use:"
println "nextdns help"
println
}
install_bin() {
bin_path=$NEXTDNS_BIN
if [ "$1" ]; then
bin_path=$1
fi
log_debug "Installing $INSTALL_RELEASE binary for $GOOS/$GOARCH to $bin_path"
unset snapshot_archive_name
case "$INSTALL_RELEASE" in
*-SNAPSHOT-*)
snapshot_archive_name="nextdns_${INSTALL_RELEASE}_${GOOS}_${GOARCH}.tar.gz"
;;
*/*)
# Snapshot
branch=${INSTALL_RELEASE%/*}
hash=${INSTALL_RELEASE#*/}
url="https://snapshot.nextdns.io/${branch}/nextdns-${hash}_${GOOS}_${GOARCH}.tar.gz"
;;
*)
url="https://github.com/nextdns/nextdns/releases/download/v${INSTALL_RELEASE}/nextdns_${INSTALL_RELEASE}_${GOOS}_${GOARCH}.tar.gz"
;;
esac
asroot mkdir -p "$(dirname "$bin_path")" &&
if [ -n "$snapshot_archive_name" ]; then \
log_debug "Extracting ./${snapshot_archive_name}"; cat ./"$snapshot_archive_name"; \
else \
log_debug "Downloading $url"; curl -sL "$url"; \
fi | \
asroot sh -c "tar Ozxf - nextdns > \"$bin_path\"" &&
asroot chmod 755 "$bin_path"
}
upgrade_bin() {
tmp=$NEXTDNS_BIN.tmp
if install_bin "$tmp"; then
asroot "$NEXTDNS_BIN" uninstall
asroot mv "$tmp" "$NEXTDNS_BIN"
asroot "$NEXTDNS_BIN" install
fi
log_debug "Removing spurious temporary install file"
asroot rm -rf "$tmp"
}
uninstall_bin() {
asroot "$NEXTDNS_BIN" uninstall
asroot rm -f "$NEXTDNS_BIN"
}
install_rpm() {
asroot curl -Ls https://repo.nextdns.io/nextdns.repo -o /etc/yum.repos.d/nextdns.repo &&
asroot yum install -y nextdns
}
upgrade_rpm() {
asroot yum update -y nextdns
}
uninstall_rpm() {
asroot yum remove -y nextdns
}
install_zypper() {
if asroot zypper repos | grep -q nextdns >/dev/null; then
echo "Repository nextdns already exists. Skipping adding repository..."
else
asroot zypper ar -f -r https://repo.nextdns.io/nextdns.repo nextdns
fi
asroot zypper refresh && asroot zypper in -y nextdns
}
upgrade_zypper() {
asroot zypper up nextdns
}
uninstall_zypper() {
asroot zypper remove -y nextdns
case $(ask_bool 'Do you want to remove the repository from the repositories list?' true) in
true)
asroot zypper removerepo nextdns
;;
esac
}
install_deb() {
if [ -f /etc/default/ubnt-dpkg-cache ]; then
# On UnifiOS 2, make sure the package is persisted over upgrades
sed -e '/^DPKG_CACHE_UBNT_PKGS+=" nextdns"/{:a;n;ba;q}' \
-e '$aDPKG_CACHE_UBNT_PKGS+=" nextdns"' \
-i /etc/default/ubnt-dpkg-cache
fi
# Fallback on curl, some debian based distrib don't have wget while debian
# doesn't have curl by default.
( asroot wget -qO /usr/share/keyrings/nextdns.gpg https://repo.nextdns.io/nextdns.gpg ||
asroot curl -sfL https://repo.nextdns.io/nextdns.gpg -o /usr/share/keyrings/nextdns.gpg ) &&
asroot chmod 0644 /usr/share/keyrings/nextdns.gpg &&
asroot sh -c 'echo "deb [signed-by=/usr/share/keyrings/nextdns.gpg] https://repo.nextdns.io/deb stable main" > /etc/apt/sources.list.d/nextdns.list' &&
(dpkg --compare-versions $(dpkg-query --showformat='${Version}' --show apt) ge 1.1 ||
asroot ln -s /usr/share/keyrings/nextdns.gpg /etc/apt/trusted.gpg.d/.) &&
(test "$OS" = "debian" && asroot apt-get -y install apt-transport-https || true) &&
asroot apt-get update &&
asroot apt-get install -y nextdns
}
upgrade_deb() {
asroot apt-get update &&
asroot apt-get install -y nextdns
}
uninstall_deb() {
asroot apt-get remove -y nextdns
}
install_apk() {
repo=https://repo.nextdns.io/apk
asroot wget -O /etc/apk/keys/nextdns.pub https://repo.nextdns.io/nextdns.pub &&
(grep -v $repo /etc/apk/repositories; echo $repo) | asroot tee /etc/apk/repositories >/dev/null &&
asroot apk update &&
asroot apk add nextdns
}
upgrade_apk() {
asroot apk update && asroot apk upgrade nextdns
}
uninstall_apk() {
asroot apk del nextdns
}
install_arch() {
asroot pacman -Sy yay &&
yay -Sy nextdns
}
upgrade_arch() {
yay -Suy nextdns
}
uninstall_arch() {
asroot pacman -R nextdns
}
install_merlin_path() {
# Add next to Merlin's path
mkdir -p /tmp/opt/sbin
ln -sf "$NEXTDNS_BIN" /tmp/opt/sbin/nextdns
}
install_merlin() {
if install_bin; then
install_merlin_path
fi
}
uninstall_merlin() {
uninstall_bin
rm -f /tmp/opt/sbin/nextdns
}
upgrade_merlin() {
if upgrade_bin; then
install_merlin_path
fi
}
install_openwrt() {
opkg update &&
opkg install nextdns
rt=$?
if [ $rt -eq 0 ]; then
case $(ask_bool 'Install the GUI?' true) in
true)
opkg install luci-app-nextdns
rt=$?
;;
esac
fi
return $rt
}
upgrade_openwrt() {
opkg update &&
opkg upgrade nextdns
}
uninstall_openwrt() {
opkg remove nextdns
}
install_ddwrt() {
if [ "$(nvram get enable_jffs2)" = "0" ]; then
log_error "JFFS support not enabled"
log_info "To enabled JFFS:"
log_info " 1. On the router web page click on Administration."
log_info " 2. Scroll down until you see JFFS2 Support section."
log_info " 3. Click Enable JFFS."
log_info " 4. Click Save."
log_info " 5. Wait couple seconds, then click Apply."
log_info " 6. Wait again. Go back to the Enable JFFS section, and enable Clean JFFS."
log_info " 7. Do not click Save. Click Apply instead."
log_info " 8. Wait till you get the web-GUI back, then disable Clean JFFS again."
log_info " 9. Click Save."
log_info "10. Relaunch this installer."
exit 1
fi
mkdir -p /jffs/nextdns &&
openssl_get https://curl.haxx.se/ca/cacert.pem | http_body > /jffs/nextdns/ca.pem &&
install_bin
}
upgrade_ddwrt() {
upgrade_bin
}
uninstall_ddwrt() {
uninstall_bin
rm -rf /jffs/nextdns
}
install_brew() {
silent_exec brew install nextdns/tap/nextdns
}
upgrade_brew() {
silent_exec brew upgrade nextdns/tap/nextdns
asroot "$NEXTDNS_BIN" install
}
uninstall_brew() {
silent_exec brew uninstall nextdns/tap/nextdns
}
install_freebsd() {
# TODO: port install
install_bin
}
upgrade_freebsd() {
# TODO: port upgrade
upgrade_bin
}
uninstall_freebsd() {
# TODO: port uninstall
uninstall_bin
}
install_pfsense() {
# TODO: port install + UI
install_bin
}
upgrade_pfsense() {
# TODO: port upgrade
upgrade_bin
}
uninstall_pfsense() {
# TODO: port uninstall
uninstall_bin
}
install_opnsense() {
# TODO: port install + UI
install_bin
}
upgrade_opnsense() {
# TODO: port upgrade
upgrade_bin
}
uninstall_opnsense() {
# TODO: port uninstall
uninstall_bin
}
ubios_install_source() {
echo "deb [signed-by=/usr/share/keyrings/nextdns.gpg] https://repo.nextdns.io/deb stable main" > /data/nextdns.list
podman exec unifi-os mv /data/nextdns.list /etc/apt/sources.list.d/nextdns.list
rm -f /tmp/nextdns.list
podman exec unifi-os apt-get install -y gnupg1 curl
podman exec unifi-os curl -sfL https://repo.nextdns.io/nextdns.gpg -o /usr/share/keyrings/nextdns.gpg
podman exec unifi-os apt-get update -o Dir::Etc::sourcelist="sources.list.d/nextdns.list" -o Dir::Etc::sourceparts="-" -o APT::Get::List-Cleanup="0"
}
install_ubios() {
ubios_install_source
podman exec unifi-os apt-get install -y nextdns
}
upgrade_ubios() {
ubios_install_source
podman exec unifi-os apt-get install --only-upgrade -y nextdns
}
uninstall_ubios() {
podman exec unifi-os apt-get remove -y nextdns
}
install_ubios_snapshot() {
branch=${INSTALL_RELEASE%/*}
hash=${INSTALL_RELEASE#*/}
url="https://snapshot.nextdns.io/${branch}/nextdns-${hash}_${GOOS}_${GOARCH}.tar.gz"
podman exec unifi-os sh -c "curl -o- $url | tar Ozxf - nextdns > /usr/bin/nextdns; /usr/bin/nextdns install"
}
upgrade_ubios_snapshot() {
/data/nextdns uninstall
install_ubios_snapshot
}
install_type() {
if [ "$FORCE_INSTALL_TYPE" ]; then
echo "$FORCE_INSTALL_TYPE"; return 0
fi
case "$INSTALL_RELEASE" in
*/*)
case $OS in
ubios)
echo "ubios_snapshot"; return 0
;;
*)
# Snapshot mode always use binary install
echo "bin"; return 0
;;
esac
esac
case $OS in
centos|fedora|rhel)
echo "rpm"
;;
opensuse-tumbleweed|opensuse-leap|opensuse)
echo "zypper"
;;
debian|ubuntu|elementary|raspbian|linuxmint|pop|neon|sparky|vyos|Deepin)
echo "deb"
;;
alpine)
echo "apk"
;;
arch|manjaro)
#echo "arch" # TODO: fix AUR install
echo "bin"
;;
openwrt)
# shellcheck disable=SC1091
. /etc/os-release
major=$(echo "$VERSION_ID" | cut -d. -f1)
case $major in
*[!0-9]*)
if [ "$VERSION_ID" = "19.07.0-rc1" ]; then
# No opkg support before 19.07.0-rc2
echo "bin"
else
# Likely 'snapshot' bulid in this case, but still > major version 19
echo "openwrt"
fi
;;
*)
if [ "$major" -lt 19 ]; then
# No opkg support before 19.07.0-rc2
echo "bin"
else
echo "openwrt"
fi
;;
esac
;;
asuswrt-merlin)
echo "merlin"
;;
edgeos|synology|clear-linux-os|solus|openbsd|netbsd|overthebox)
echo "bin"
;;
ddwrt)
echo "ddwrt"
;;
darwin)
if [ -x /usr/local/bin/brew ] || [ -x /opt/homebrew/bin/brew ]; then
echo "brew"
else
log_debug "Homebrew not installed, fallback on binary install"
echo "bin"
fi
;;
freebsd)
echo "freebsd"
;;
pfsense)
echo "pfsense"
;;
opnsense)
echo "opnsense"
;;
ubios)
echo "ubios"
;;
void)
# TODO: pkg for xbps
echo "bin"
;;
*)
log_error "Unsupported installation for $(detect_os)"
return 1
;;
esac
}
get_config() {
"$NEXTDNS_BIN" config | grep -E "^$1 " | cut -d' ' -f 2
}
get_config_bool() {
val=$(get_config "$1")
case $val in
true|false)
echo "$val"
;;
esac
echo "$2"
}
get_config_id() {
log_debug "Get configuration ID"
while [ -z "$CONFIG_ID" ]; do
default=
prev_id=$(get_config config)
if [ "$prev_id" ]; then
log_debug "Previous config ID: $prev_id"
default=" (default=$prev_id)"
fi
print "NextDNS Configuration ID%s: " "$default"
read -r id
if [ -z "$id" ]; then
id=$prev_id
fi
if echo "$id" | grep -qE '^[0-9a-f]{6}$'; then
CONFIG_ID=$id
break
else
log_error "Invalid configuration ID."
println
println "ID format is 6 alphanumerical lowercase characters (example: 123abc)."
println "Your ID can be found on the Setup tab of https://my.nextdns.io."
println
fi
done
echo "$CONFIG_ID"
}
log_debug() {
if [ "$DEBUG" = "1" ]; then
printf "\033[30;1mDEBUG: %s\033[0m\n" "$*" >&2
fi
}
log_info() {
printf "INFO: %s\n" "$*" >&2
}
log_error() {
printf "\033[31mERROR: %s\033[0m\n" "$*" >&2
}
print() {
format=$1
if [ $# -gt 0 ]; then
shift
fi
# shellcheck disable=SC2059
printf "$format" "$@" >&2
}
println() {
format=$1
if [ $# -gt 0 ]; then
shift
fi
# shellcheck disable=SC2059
printf "$format\n" "$@" >&2
}
doc() {
# shellcheck disable=SC2059
printf "\033[30;1m%s\033[0m\n" "$*" >&2
}
menu() {
while true; do
n=0
default=
for item in "$@"; do
case $((n%3)) in
0)
key=$item
if [ -z "$default" ]; then
default=$key
fi
;;
1)
echo "$key) $item"
;;
esac
n=$((n+1))
done
print "Choice (default=%s): " "$default"
read -r choice
if [ -z "$choice" ]; then
choice=$default
fi
n=0
for item in "$@"; do
case $((n%3)) in
0)
key=$item
;;
2)
if [ "$key" = "$choice" ]; then
if ! "$item"; then
log_error "$item: exit $?"
fi
break 2
fi
;;
esac
n=$((n+1))
done
echo "Invalid choice"
done
}
ask_bool() {
msg=$1
default=$2
case $default in
true)
msg="$msg [Y|n]: "
;;
false)
msg="$msg [y|N]: "
;;
*)
msg="$msg (y/n): "
esac
while true; do
print "%s" "$msg"
read -r answer
if [ -z "$answer" ]; then
answer=$default
fi
case $answer in
y|Y|yes|YES|true)
echo "true"
return 0
;;
n|N|no|NO|false)
echo "false"
return 0
;;
*)
echo "Invalid input, use yes or no"
;;
esac
done
}
detect_endiannes() {
if ! hexdump /dev/null 2>/dev/null; then
# Some firmware do not contain hexdump, for those, try to detect endiannes
# differently
case $(cat /proc/cpuinfo) in
*BCM5300*)
# RT-AC66U does not support merlin version over 380.70 which
# lack hexdump command.
echo "le"
;;
*)
log_error "Cannot determine endiannes"
return 1
;;
esac
return 0
fi
case $(hexdump -s 5 -n 1 -e '"%x"' /bin/sh | head -c1) in
1)
echo "le"
;;
2)
echo ""
;;
esac
}
detect_goarch() {
if [ "$FORCE_GOARCH" ]; then
echo "$FORCE_GOARCH"; return 0
fi
case $(uname -m) in
x86_64|amd64)
echo "amd64"
;;
i386|i686)
echo "386"
;;
arm)
# Freebsd does not include arm version
case "$(sysctl -b hw.model 2>/dev/null)" in
*A9*)
echo "armv7"
;;
*)
# Unknown version, fallback to the lowest
echo "armv5"
;;
esac
;;
armv5*)
echo "armv5"
;;
armv6*|armv7*)
if grep -q vfp /proc/cpuinfo 2>/dev/null; then
echo "armv$(uname -m | sed -e 's/[[:alpha:]]//g')"
else
# Soft floating point
echo "armv5"
fi
;;
aarch64)
case "$(uname -o 2>/dev/null)" in
ASUSWRT-Merlin*)
# XXX when using arm64 build on ASUS AC66U and ACG86U, we get Go error:
# "out of memory allocating heap arena metadata".
echo "armv7"
;;
*)
echo "arm64"
;;
esac
;;
armv8*|arm64)
echo "arm64"
;;
mips*)
# TODO: detect hardfloat
echo "$(uname -m)$(detect_endiannes)_softfloat"
;;
*)
log_error "Unsupported GOARCH: $(uname -m)"
return 1
;;
esac
}
detect_goos() {
if [ "$FORCE_GOOS" ]; then
echo "$FORCE_GOOS"; return 0
fi
case $(uname -s) in
Linux)
echo "linux"
;;
Darwin)
echo "darwin"
;;
FreeBSD)
echo "freebsd"
;;
NetBSD)
echo "netbsd"
;;
OpenBSD)
echo "openbsd"
;;
*)
log_error "Unsupported GOOS: $(uname -s)"
return 1
esac
}
detect_os() {
if [ "$FORCE_OS" ]; then
echo "$FORCE_OS"; return 0
fi
case $(uname -s) in
Linux)
case $(uname -o) in
GNU/Linux|Linux)
if grep -q -e '^EdgeRouter' -e '^UniFiSecurityGateway' /etc/version 2> /dev/null; then
echo "edgeos"; return 0
fi
if uname -u 2>/dev/null | grep -q '^synology'; then
echo "synology"; return 0
fi
# shellcheck disable=SC1091
dist=$(. /etc/os-release; echo "$ID")
case $dist in
ubios)
if [ -z "$(command -v podman)" ]; then
log_error "This version of UnifiOS is not supported. Make sure you run version 1.7.0 or above."
return 1
fi
echo "$dist"; return 0
;;
debian|ubuntu|elementary|raspbian|centos|fedora|rhel|arch|manjaro|openwrt|clear-linux-os|linuxmint|opensuse-tumbleweed|opensuse-leap|opensuse|solus|pop|neon|overthebox|sparky|vyos|void|alpine|Deepin)
echo "$dist"; return 0
;;
esac
# shellcheck disable=SC1091
for dist in $(. /etc/os-release; echo "$ID_LIKE"); do
case $dist in
debian|ubuntu|rhel|fedora|openwrt)
log_debug "Using ID_LIKE"
echo "$dist"; return 0
;;
esac
done
;;
ASUSWRT-Merlin*)
echo "asuswrt-merlin"; return 0
;;
DD-WRT)
echo "ddwrt"; return 0
esac
;;
Darwin)
echo "darwin"; return 0
;;
FreeBSD)
if [ -f /etc/platform ]; then
case $(cat /etc/platform) in
pfSense)
echo "pfsense"; return 0
;;
esac
fi
if [ -x /usr/local/sbin/opnsense-version ]; then
case $(/usr/local/sbin/opnsense-version -N) in
OPNsense)
echo "opnsense"; return 0
;;
esac
fi
echo "freebsd"; return 0
;;
NetBSD)
echo "netbsd"; return 0
;;
OpenBSD)
echo "openbsd"; return 0
;;
*)
esac
log_error "Unsupported OS: $(uname -o) $(grep ID "/etc/os-release" 2>/dev/null | xargs)"
return 1
}
guess_host_type() {
if [ -d /data/unifi ]; then
# Special case when installer is run from inside the ubios podman
echo "router"; return 0
fi
case $OS in
pfsense|opnsense|openwrt|asuswrt-merlin|edgeos|ddwrt|synology|overthebox|ubios)
echo "router"
;;
darwin)
echo "workstation"
;;
*)
echo "unsure"
;;
esac
}
asroot() {
# Some platform (merlin) do not have the "id" command and $USER report a non root username with uid 0.
if [ "$(grep '^Uid:' /proc/$$/status 2>/dev/null|cut -f2)" = "0" ] || [ "$USER" = "root" ] || [ "$(id -u 2>/dev/null)" = "0" ]; then
"$@"
elif [ "$(command -v sudo 2>/dev/null)" ]; then
sudo "$@"
else
echo "Root required"
su -m root -c "$*"
fi
}
silent_exec() {
if [ "$DEBUG" = 1 ]; then
"$@"
else
if ! out=$("$@" 2>&1); then
rt=$?
println "\033[30;1m%s\033[0m" "$out"
return $rt
fi
fi
}
bin_location() {
case $OS in
centos|fedora|rhel|debian|ubuntu|elementary|raspbian|arch|manjaro|clear-linux-os|linuxmint|opensuse-tumbleweed|opensuse-leap|opensuse|solus|pop|neon|sparky|vyos|void|alpine|Deepin)
echo "/usr/bin/nextdns"