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|
#!/bin/bash
set -e
PORT=9695
#-------------------------------------------------------------------------------
FN_AVAHI_CFG_SRC=$SCRIPT_PATH/etc_avahi_services_hicn.service
FN_AVAHI_CFG=/etc/avahi/services/hicn.service
# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression
! read -r -d '' TPL_AVAHI_CFG <<-EOF
<?xml version="1.0" standalone='no'?>
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
<name>hicn node</name>
<service>
<type>_hicn._udp</type>
<port>$PORT</port>
</service>
</service-group>
EOF
#-------------------------------------------------------------------------------
# Reliably determine script's full path
SCRIPT_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
# https://unix.stackexchange.com/questions/325594/script-a-test-for-installed-debian-package-error-handling
function pkg_is_installed()
{
PKG="$1"
LISTF=$(mktemp)
dpkg-query -W -f '${Package} ${State}\n' >$LISTF
grep "^${PKG} " $LISTF >/dev/null
GREP_RC=$?
rm $LISTF
# for even moar strict error handling
test $GREP_RC == 0 -o $GREP_RC == 1
return $GREP_RC
}
# https://stackoverflow.com/questions/3466166/how-to-check-if-running-in-cygwin-mac-or-linux
function detect_os()
{
unameOut="$(uname -s)"
case "${unameOut}" in
Linux*) machine=linux;;
Darwin*) machine=mac;;
CYGWIN*) machine=cygwin;;
MINGW*) machine=mingw;;
*) machine=unknown;;
esac
echo ${machine}
}
function ensure_pkg_is_installed()
{
PKG="$1"
pkg_is_installed $PKG && return
sudo apt install $PKG
}
function ensure_file_installed()
{
SRC=$1
DST=$2
# Test whether destination exists and is up to date
[ -s $DST ] && cmp -s $SRC $DST && return
sudo cp $SRC $DST
}
function ensure_file_template()
{
DST=$1
TPL=$2
echo "$TPL" | sudo tee $DST >/dev/null
}
function is_function()
{
[ "$(type -t $1)" == "function" ]
}
function os_function()
{
FUN=$1
shift
ARGS=$@
OS=$(detect_os)
if ! is_function ${FUN}_${OS}; then
echo "Platform $OS not supported for $FUN [${FUN}_${OS}]"
exit -1
fi
${FUN}_${OS} $ARGS
}
#-------------------------------------------------------------------------------
# NOTE: debian only
function run_bonjour_server_linux()
{
ensure_pkg_is_installed avahi-daemon
#ensure_file_installed $FN_AVAHI_CFG_SRC $FN_AVAHI_CFG
ensure_file_template $FN_AVAHI_CFG "$TPL_AVAHI_CFG"
sudo service avahi-daemon restart
echo >&2, "Bonjour is now served through avahi"
}
function run_bonjour_server_mac()
{
dns-sd -R hicn _hicn._tcp local $PORT
# Proxy mode -P
}
function run_bonjour_client_linux()
{
avahi-browse -ptr _hicn._udp
}
function run_bonjour_client_mac()
{
dns-sd -B _hicn._udp local
}
# XXX function run_bonjour_proxy_linux() { }
function run_bonjour_proxy_mac()
{
if [[ $# != 2 ]]; then
echo "Usage: $0 proxy IP_ADDRESS"
exit -1
fi
IP=$1
dns-sd -P hicn _hicn._udp local $PORT hicn.local $IP path=/
}
#-------------------------------------------------------------------------------
case $1 in
client)
os_function run_bonjour_client
;;
server)
os_function run_bonjour_server
;;
proxy)
os_function run_bonjour_proxy $@
;;
*)
echo "$0 [client|server]"
exit -1
;;
esac
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