debian: add packaging

Add initial debian packaging and a systemd service that starts
osmo_dia2gsup. Given that dependencies listed in rebar.lock are not
packaged in debian 11, this just uses rebar3 to download and compile
the dependencies during the build.

Resulting erlang files are installed to the following path, where they
become available in the erlang shell (erl):
  /lib/erlang/lib/{name_of_component}/ebin/

Related: SYS#6006
Change-Id: Ic55bca1260f992d0ed8583e7c7fe948ba0160d4d

.gitignore

@@ -9,3 +9,9 @@ erl_crash.dump
 src/diameter_3gpp*
 src/diameter_rfc*
 src/diameter_etsi*
+
+/debian/*.debhelper
+/debian/files
+/debian/osmo-diameter2gsup.substvars
+/debian/osmo-diameter2gsup/
+/debian/debhelper-build-stamp

contrib/systemd/osmo_dia2gsup.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Osmocom DIAMETER to GSUP translator
+After=osmo-hlr.service
+
+[Service]
+Type=simple
+Restart=always
+Environment="HOME=/var/lib/osmo_dia2gsup"
+ExecStartPre=/usr/bin/mkdir -p /var/lib/osmo_dia2gsup
+ExecStart=/usr/bin/erl -noshell -sname osmo_dia2gsup -eval "osmo_dia2gsup:start()."
+RestartSec=2
+
+[Install]
+WantedBy=multi-user.target

debian/changelog

@@ -0,0 +1,5 @@
+osmo-diameter2gsup (0.1.0) unstable; urgency=medium
+
+  * Initial release.
+
+ -- Oliver Smith <osmith@sysmocom.de>  Wed, 14 Jul 2022 14:51:01 +0200

debian/compat

@@ -0,0 +1 @@
+10

debian/control

@@ -0,0 +1,17 @@
+Source: osmo-diameter2gsup
+Maintainer: Osmocom Community <openbsc@lists.osmocom.org>
+Section: net
+Priority: optional
+Build-Depends: erlang-nox,
+	libpcap-dev,
+	rebar3,
+Standards-Version: 4.5.0
+
+Package: osmo-diameter2gsup
+Architecture: any
+Depends: erlang-nox
+Multi-Arch: allowed
+Description: Osmocom DIAMETER to GSUP translator
+ This can be used to translate DIAMETER requests (such as those by an EPC)
+ to the Osmocom specific GSUP protocol, which means you can use OsmoHLR
+ as a simplistic HSS.

debian/osmo-diameter2gsup.install

@@ -0,0 +1,2 @@
+/contrib/systemd/osmo_dia2gsup.service /lib/systemd/system/
+/_lib/* /usr/lib/erlang/lib/

debian/rules

@@ -0,0 +1,18 @@
+#!/usr/bin/make -f
+
+build:
+	rebar3 compile
+	rebar3 escriptize
+	rebar3 eunit
+	for i in _build/default/lib/*; do \
+		libdir=_lib/"$$(basename "$$i")"; \
+		mkdir -pv "$$libdir"; \
+		cp -rv "$$i/ebin" "$$libdir"; \
+	done
+	find _lib -name .empty -delete
+
+clean:
+	rm -rf _build _lib
+
+%:
+	dh $@

debian/source/format

@@ -0,0 +1 @@
+3.0 (native)