.DEFAULT_GOAL = all

prefix ?= /usr/local
exec_prefix ?= $(prefix)
bindir ?= $(exec_prefix)/bin
sbindir ?= $(exec_prefix)/sbin
libexecdir ?= $(exec_prefix)/libexec
export prefix exec_prefix bindir sbindir libexecdir

bin_PROGRAMS := $(wildcard bin/*)
sbin_PROGRAMS := $(wildcard sbin/*)
libexec_PROGRAMS := $(wildcard libexec/*)

PROGRAMS = $(bin_PROGRAMS) $(sbin_PROGRAMS) $(libexec_PROGRAMS)
export PROGRAMS bin_PROGRAMS sbin_PROGRAMS libexec_PROGRAMS

include src/control.mk

DD_USER = dyndns
DD_GROUP = dyndns


define install_programs
	$(if $($(1)_PROGRAMS),install -t $($(1)dir) $($(1)_PROGRAMS),@: "skip install $1 (no files)")

endef

all_programs = bin sbin libexec

define install_all_programs
	$(foreach x,$(all_programs),$(call install_programs,$(x)))
endef

.PHONY: all install clean

all: control

clean: clean-equivs

install: equivs-stamp $(PROGRAMS)
ifneq ($(shell id -u),0)
	@sudo $(MAKE) MAKEFLAGS=$(MAKEFLAGS) $@
else
	$(call install_all_programs)
	getent passwd $(DD_USER) || useradd --system --create-home $(DD_USER)
	@chown -v root:$(DD_GROUP) /etc/powerdns
	@chown -v pdns:$(DD_GROUP) /etc/powerdns/powerdns.sqlite3
	@chmod -v g+rwx /etc/powerdns
	@chmod -v g+rw /etc/powerdns/powerdns.sqlite3
	$(MAKE) ~$(DD_USER)/.ssh/authorized_keys
endif

define dyndns_authorized_keys_contents
command="$(bindir)/samizdat-ssh-command $(bindir)/cryptonomic-dyndns-command",no-port-forwarding * Samizdat - YES WE CAN
endef

~$(DD_USER)/.ssh/authorized_keys:
	: writing file $@  $(file >$@,$(dyndns_authorized_keys_contents))