Full-service installer for the Caddy web server, including systemd.
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#!/bin/bash
# https://caddyserver.com/download
# https://caddyserver.com/download/build?os=darwin&arch=amd64&features=DNS,awslambda,cors,expires,filemanager,filter,git,hugo,ipfilter,jsonp,jwt,locale,mailout,minify,multipass,prometheus,ratelimit,realip,search,upload,cloudflare,digitalocean,dnsimple,dyn,gandi,googlecloud,linode,namecheap,ovh,rfc2136,route53,vultr
installer_base="https://git.daplie.com/Daplie/caddy-installer/raw/master"
caddy_systemd_service="$installer_base/etc/systemd/system/caddy.service"
caddy_systemd_tmpfiles="$installer_base/etc/tmpfiles.d/caddy.conf"
caddy_launchd_service="$installer_base/Library/LaunchDaemons/com.caddyserver.web.plist"
caddy_localhost_index="$installer_base/srv/www/index.html"
all_oses="windows,darwin,linux,freebsd,openbsd"
all_arches="arm64,amd64,386,armv5,armv6l,armv7l"
all_plugins="DNS,awslambda,cors,expires,filemanager,filter,git,hugo,ipfilter,jsonp,jwt,locale,mailout,minify,multipass,prometheus,ratelimit,realip,search,upload,cloudflare,digitalocean,dnsimple,dyn,gandi,googlecloud,linode,namecheap,ovh,rfc2136,route53,vultr"
caddy_os=""
default_os=""
caddy_arch=""
default_arch=""
caddy_arm=""
caddy_features=""
caddy_user=www-data
caddy_group=www-data
install_path="/usr/local/bin"
caddy_bin="caddy"
caddy_dl_ext=".tar.gz"
###############################
# #
# http_get #
# boilerplate for curl / wget #
# #
###############################
# See https://git.daplie.com/Daplie/daplie-snippets/blob/master/bash/http-get.sh
http_get=""
http_opts=""
http_out=""
detect_http_get()
{
if type -p curl >/dev/null 2>&1; then
http_get="curl"
http_opts="-fsSL"
http_out="-o"
#curl -fsSL "$caddy_url" -o "$PREFIX/tmp/$caddy_pkg"
elif type -p wget >/dev/null 2>&1; then
http_get="wget"
http_opts="--quiet"
http_out="-O"
#wget --quiet "$caddy_url" -O "$PREFIX/tmp/$caddy_pkg"
else
echo "Aborted, could not find curl or wget"
return 7
fi
}
dap_dl()
{
$http_get $http_opts $http_out "$2" "$1"
}
detect_http_get
## END HTTP_GET ##
detect_arch()
{
trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; return 1' ERR
#########################
# Which OS and version? #
#########################
default_arch="unknown"
# NOTE: `uname -m` is more accurate and universal than `arch`
# See https://en.wikipedia.org/wiki/Uname
unamem="$(uname -m)"
if [[ $unamem == *aarch64* ]]; then
default_arch="arm64"
elif [[ $unamem == *64* ]]; then
default_arch="amd64"
elif [[ $unamem == *86* ]]; then
default_arch="386"
elif [[ $unamem == *armv5* ]]; then
default_arch="armv5"
elif [[ $unamem == *armv6l* ]]; then
default_arch="armv6l"
elif [[ $unamem == *armv7l* ]]; then
default_arch="armv7l"
else
default_arch="$unamem"
fi
trap ERR
}
detect_os()
{
trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; return 1' ERR
default_os="unsupported"
uname="$(uname)"
#declare -u unameu=$uname # requires bash v4+, not supported on macOS
unameu="$(echo $uname | tr '/a-z/' '/A-Z/')"
if [[ ${unameu} == *DARWIN* ]]; then
default_os="darwin"
vers=$(sw_vers)
version=${vers##*ProductVersion:}
IFS='.' read OSX_MAJOR OSX_MINOR _ <<<"$version"
# Major
if ((OSX_MAJOR < 10)); then
echo "Aborted, unsupported OS X version (9-)"
return 3
fi
if ((OSX_MAJOR > 10)); then
echo "Aborted, unsupported OS X version (11+)"
return 4
fi
# Minor
if ((OSX_MINOR < 5)); then
echo "Aborted, unsupported OS X version (10.5-)"
return 5
fi
elif [[ ${unameu} == *LINUX* ]]; then
default_os="linux"
elif [[ ${unameu} == *FREEBSD* ]]; then
default_os="freebsd"
elif [[ ${unameu} == *OPENBSD* ]]; then
default_os="openbsd"
elif [[ ${unameu} == *WIN* ]]; then
# Should catch cygwin
default_os="windows"
caddy_dl_ext=".zip"
caddy_bin=$caddy_bin.exe
else
default_os="$uname"
fi
trap ERR
}
detect_target()
{
trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; return 1' ERR
detect_arch
detect_os
while [[ $# -gt 0 ]]; do
key="$1"
case $key in
--arch)
caddy_arch="$2"
shift # past argument
;;
--os)
caddy_os="$2"
shift # past argument
;;
-h|--help)
echo ""
echo "Usage: install-caddy [plugin1,plugin2,...]"
echo ""
echo "Optional arguments (defaults shown)"
echo " --os ${default_os} # options: $(echo $all_oses | tr "," " ")"
echo " --arch ${default_arch}${caddy_arm} # options: $(echo $all_arches | tr "," " ")"
echo ""
echo "Features:"
echo "$(echo $all_plugins)"
echo ""
exit 0
;;
-*)
# unknown argument
echo "unrecognized argument '$1'"
exit 13
;;
*)
# unknown value
if [ -z "${caddy_features}" ]; then
caddy_features=$1
else
echo "unrecognized value '$1'"
exit 1
fi
;;
esac
shift # past argument or value
done
# use commandline-specified caddy os or the host OS
if [ -z "$caddy_os" ]; then
caddy_os=$default_os
fi
if [[ ${caddy_os} == "darwin" ]]; then
caddy_user=_www
caddy_group=_www
caddy_dl_ext=".zip"
elif [[ ${caddy_os} == "linux" ]]; then
ignore=true
elif [[ ${caddy_os} == "freebsd" ]]; then
ignore=true
elif [[ ${caddy_os} == "openbsd" ]]; then
ignore=true
elif [[ ${caddy_os} == "windows" ]]; then
caddy_dl_ext=".zip"
caddy_bin=$caddy_bin.exe
else
echo "Aborted, unsupported or unknown os: $caddy_os"
return 6
fi
# use commandline-specified caddy arch or the host arch
if [ -z "$caddy_arch" ]; then
caddy_arch=$default_arch
fi
if [[ ${caddy_arch} == "arm64" ]]; then
ignore=true
elif [[ ${caddy_arch} == "amd64" ]]; then
ignore=true
elif [[ ${caddy_arch} == "386" ]]; then
ignore=true
elif [[ ${caddy_arch} == "armv5" ]]; then
caddy_arch="arm"
caddy_arm=5
elif [[ ${caddy_arch} == "armv6l" ]]; then
caddy_arch="arm"
caddy_arm=6
elif [[ ${caddy_arch} == "armv7l" ]]; then
caddy_arch="arm"
caddy_arm=7
else
echo "Aborted, unsupported or unknown architecture: $caddy_arch"
return 2
fi
trap ERR
}
download_caddy()
{
trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; return 1' ERR
########################
# Download and extract #
########################
echo "Downloading Caddy for $caddy_os/$caddy_arch$caddy_arm..."
#caddy_file="caddy_${caddy_os}_$caddy_arch${caddy_arm}_custom$caddy_dl_ext"
caddy_pkg="caddy_${caddy_os}_$caddy_arch${caddy_arm}_custom$caddy_dl_ext"
caddy_dir="caddy_${caddy_os}_$caddy_arch${caddy_arm}_custom"
# new.caddyserver.com
caddy_url="https://caddyserver.com/download/$caddy_os/$caddy_arch$caddy_arm?plugins=$caddy_features"
# old caddyserver.com
#caddy_url="https://caddyserver.com/download/build?os=$caddy_os&arch=$caddy_arch&arm=$caddy_arm&features=$caddy_features"
echo "$caddy_url"
# Use $PREFIX for compatibility with Termux on Android
rm -rf "$PREFIX/tmp/$caddy_pkg" "$PREFIX/tmp/$caddy_dir"
dap_dl "$caddy_url" "$PREFIX/tmp/$caddy_pkg"
echo "Extracting..."
case "$caddy_pkg" in
*.zip) unzip -o "$PREFIX/tmp/$caddy_pkg" "$caddy_bin" -d "$PREFIX/tmp/$caddy_dir/" ;;
#*.tar.gz) tar -xzf "$PREFIX/tmp/$caddy_file" -C "$PREFIX/tmp/" "$caddy_bin" ;;
*.tar.gz) mkdir -p "$PREFIX/tmp/$caddy_dir/"; tar -xzf "$PREFIX/tmp/$caddy_pkg" -C "$PREFIX/tmp/$caddy_dir/" ;;
esac
trap ERR
}
install_caddy()
{
trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; return 1' ERR
if [ "$caddy_os" != "$default_os" ]; then
echo "caddy os does not match $default_os, skipping install"
fi
if [ "$caddy_arch" != "$default_arch" ]; then
echo "caddy arch does not match $default_arch, skipping install"
fi
# Termux on Android has $PREFIX set which already ends with /usr
if [[ -n "$ANDROID_ROOT" && -n "$PREFIX" ]]; then
install_path="$PREFIX/bin"
fi
# Fall back to /usr/bin if necessary
if [[ ! -d $install_path ]]; then
install_path="/usr/bin"
fi
# Not every platform has or needs sudo (see issue #40)
((EUID)) && [[ -z "$ANDROID_ROOT" ]] && sudo_cmd="sudo"
# Back up existing caddy, if any
caddy_cur_ver="$("$caddy_bin" --version 2>/dev/null | cut -d ' ' -f2)"
if [[ $caddy_cur_ver ]]; then
# caddy of some version is already installed
caddy_path="$(type -p "$caddy_bin")"
caddy_backup="${caddy_path}_$caddy_cur_ver"
echo "Backing up $caddy_path to $caddy_backup"
echo "(Password may be required.)"
$sudo_cmd mv "$caddy_path" "$caddy_backup"
fi
echo "Putting caddy in $install_path (may require password)"
$sudo_cmd mv "$PREFIX/tmp/$caddy_dir/$caddy_bin" "$install_path/$caddy_bin"
$sudo_cmd mkdir -p $PREFIX/etc/caddy
if [ ! -f "$PREFIX/etc/caddy/Caddyfile" ] || [ -z "$(cat $PREFIX/etc/caddy/Caddyfile)" ]; then
cat <<'CADDY_EOF' >> $PREFIX/tmp/$caddy_dir/Caddyfile
http://localhost {
root /srv/www/localhost
}
CADDY_EOF
$sudo_cmd mv "$PREFIX/tmp/$caddy_dir/Caddyfile" "$PREFIX/etc/caddy/Caddyfile"
fi
$sudo_cmd mkdir -p $PREFIX/etc/ssl/caddy
$sudo_cmd mkdir -p $PREFIX/var/log/caddy
$sudo_cmd mkdir -p $PREFIX/srv/www/localhost
$sudo_cmd chmod +x "$install_path/$caddy_bin"
$sudo_cmd chmod 755 $PREFIX/etc/caddy
$sudo_cmd chmod 755 $PREFIX/etc/caddy
$sudo_cmd chmod 750 $PREFIX/etc/ssl/caddy
$sudo_cmd chmod 750 $PREFIX/var/log/caddy
$sudo_cmd chmod 755 $PREFIX/srv/www
$sudo_cmd chmod 755 $PREFIX/srv/www/localhost
if [ ! -f "$PREFIX/srv/www/localhost/index.html" ] || [ -z "$(cat $PREFIX/srv/www/localhost/index.html)" ]; then
dap_dl "$caddy_localhost_index" $PREFIX/tmp/$caddy_dir/index.html
$sudo_cmd mv $PREFIX/tmp/$caddy_dir/index.html $PREFIX/srv/www/localhost/
$sudo_cmd chown -R $caddy_user:$caddy_group $PREFIX/srv/www/localhost/
$sudo_cmd chmod 664 $PREFIX/srv/www/localhost/index.html
fi
if setcap_cmd=$(type -p setcap); then
$sudo_cmd $setcap_cmd cap_net_bind_service=+ep "$install_path/$caddy_bin"
fi
$sudo_cmd rm -- "$PREFIX/tmp/$caddy_pkg"
echo ""
# check installation
$caddy_bin --version
echo "Successfully installed"
echo ""
echo "Trying to set permissions to $caddy_user:$caddy_group"
echo '(if this fails please file a bug with the output of "uname -a" and "cat /etc/group")'
# TODO if this fails perhaps catch and create a www-data group?
# TODO grep $caddy_user $PREFIX/etc/passwd
# TODO grep $caddy_group $PREFIX/etc/group
# TODO adduser $caddy_user
$sudo_cmd chown -R $caddy_user:$caddy_group $PREFIX/etc/caddy
$sudo_cmd chown -R $caddy_user:$caddy_group $PREFIX/etc/ssl/caddy
$sudo_cmd chown -R $caddy_user:$caddy_group $PREFIX/var/log/caddy
$sudo_cmd chown -R $caddy_user:$caddy_group $PREFIX/srv/www
echo ""
echo "Successfully changed permissions"
echo ""
if [ -d "$PREFIX/etc/systemd/system" ]; then
echo ""
echo "Installing as systemd service"
echo ""
dap_dl "$caddy_systemd_service" $PREFIX/tmp/$caddy_dir/caddy.service
$sudo_cmd mv $PREFIX/tmp/$caddy_dir/caddy.service $PREFIX/etc/systemd/system/caddy.service
$sudo_cmd chown -R root:root $PREFIX/etc/systemd/system/caddy.service
$sudo_cmd chmod 644 $PREFIX/etc/systemd/system/caddy.service
dap_dl "$caddy_systemd_tmpfiles" $PREFIX/tmp/$caddy_dir/caddy.conf
$sudo_cmd mv $PREFIX/tmp/$caddy_dir/caddy.conf $PREFIX/etc/tmpfiles.d/caddy.conf
$sudo_cmd chown -R root:root $PREFIX/etc/tmpfiles.d/caddy.conf
$sudo_cmd chmod 644 $PREFIX/etc/tmpfiles.d/caddy.conf
$sudo_cmd systemctl stop caddy.service >/dev/null 2>/dev/null
$sudo_cmd systemctl daemon-reload
$sudo_cmd systemctl start caddy.service
$sudo_cmd systemctl enable caddy.service
echo "caddy started with systemctl"
echo "Check it out at http://localhost"
elif [ -d "/Library/LaunchAgents" ]; then
echo ""
echo "Installing as launchd service"
echo ""
# See http://www.launchd.info/
dap_dl "$caddy_launchd_service" $PREFIX/tmp/$caddy_dir/com.caddyserver.web.plist
$sudo_cmd mv $PREFIX/tmp/$caddy_dir/com.caddyserver.web.plist /Library/LaunchAgents/com.caddyserver.web.plist
$sudo_cmd chown root:wheel /Library/LaunchAgents/com.caddyserver.web.plist
$sudo_cmd chmod 0644 /Library/LaunchAgents/com.caddyserver.web.plist
$sudo_cmd launchctl unload -w /Library/LaunchAgents/com.caddyserver.web.plist >/dev/null 2>/dev/null
$sudo_cmd launchctl load -w /Library/LaunchAgents/com.caddyserver.web.plist
echo "caddy started with launchd"
else
echo ""
echo "Unknown system service init type. You must install as a system service manually."
echo '(please file a bug with the output of "uname -a")'
echo ""
fi
# cleanup
$sudo_cmd rm -rf -- "$PREFIX/tmp/$caddy_dir/"
trap ERR
}
run()
{
trap 'echo -e "Aborted, error $? in command: $BASH_COMMAND"; trap ERR; return 1' ERR
detect_http_get
detect_target "$@"
download_caddy "$@"
if [ -f "$PREFIX/tmp/$caddy_dir/install.sh" ]; then
chmod a+x $PREFIX/tmp/$caddy_dir/install.sh
$PREFIX/tmp/$caddy_dir/install.sh "$PREFIX/tmp/$caddy_dir" "$@"
else
install_caddy "$@"
fi
trap ERR
return 0
}
run "$@"