debian: add rules for open-vault

Largely inherited from the open-consul build, however Vault's build
requires separate steps for the UI component, and a more complex
ldflags.

debian/rules

@@ -0,0 +1,86 @@
+#!/usr/bin/make -f
+
+# Defines:
+#   DEB_SOURCE
+#   DEB_VERSION
+#   DEB_VERSION_EPOCH_UPSTREAM
+#   DEB_VERSION_UPSTREAM_REVISION
+#   DEB_VERSION_UPSTREAM
+#   DEB_DISTRIBUTION
+#   SOURCE_DATE_EPOCH
+include /usr/share/dpkg/pkg-info.mk
+
+#export DH_VERBOSE := 1
+
+PKGNAME                             := open-vault
+PKGALIAS                            := vault
+PKGDIR                              := debian/$(PKGNAME)
+SRCDIR                              := debian
+BUILDDIR                            := dist
+BUILDDATE                           := $(shell date -u '+%Y-%m-%dT%H:%M:%SZ' -d @$(SOURCE_DATE_EPOCH))
+
+export DH_OPTIONS
+export DEB_BUILD_OPTIONS            ?= terse
+export DEB_BUILD_MAINT_OPTIONS      := hardening=+all
+export YARNCACHE                    := /tmp/yarncache
+export GO111MODULE                  := on
+export GOFLAGS                      := -buildmode=pie -trimpath -mod=readonly -modcacherw
+export GOCACHE                      := /tmp/gocache
+export GOPATH                       := /tmp/gopath
+export GOPROXY                      := https://proxy.golang.org,direct
+export CGO_LDFLAGS                   = $(LDFLAGS)
+export CGO_CFLAGS                    = $(CFLAGS)
+export CGO_CPPFLAGS                  = $(CPPFLAGS)
+export CGO_CXXFLAGS                  = $(CXXFLAGS)
+# dh_golang doesn't do this for you
+ifeq ($(DEB_HOST_ARCH), i386)
+	export GOARCH := 386
+else ifeq ($(DEB_HOST_ARCH), amd64)
+	export GOARCH := amd64
+else ifeq ($(DEB_HOST_ARCH), armhf)
+	export GOARCH := arm
+else ifeq ($(DEB_HOST_ARCH), arm64)
+	export GOARCH := arm64
+endif
+
+%:
+	dh $@ --builddirectory=$(BUILDDIR) --buildsystem=golang --with=golang
+
+override_dh_clean:
+	rm -f debian/debhelper.log
+	dh_clean
+
+override_dh_auto_configure:
+	mkdir -p $(BUILDDIR) $(GOCACHE) $(GOPATH) $(YARNCACHE) /tmp/builder
+	setfacl -m "default:group::rwx" $(GOCACHE) $(GOPATH) $(YARNCACHE) /tmp/builder
+	mv $(SRCDIR)/$(PKGNAME).service         $(SRCDIR)/$(PKGNAME).$(PKGALIAS).service
+	mv $(SRCDIR)/$(PKGNAME).default         $(SRCDIR)/$(PKGNAME).$(PKGALIAS).default
+	mv $(SRCDIR)/$(PKGNAME).sysusers        $(SRCDIR)/$(PKGNAME).$(PKGALIAS).sysusers
+	yarnpkg config set cacheFolder $(YARNCACHE)
+	( cd "ui" && yarnpkg install )
+	go mod download
+	$(SRCDIR)/vault-ldflags.sh \
+		"v$(DEB_VERSION_UPSTREAM)" "$(DEB_VERSION)" "$(BUILDDATE)" \
+		> $(BUILDDIR)/.ldflags
+
+override_dh_auto_build:
+	( cd "ui" ; npm rebuild node-sass ; yarnpkg run build )
+	go build -tags ui -ldflags "$$(< $(BUILDDIR)/.ldflags)" -o $(BUILDDIR) .
+
+override_dh_auto_install:
+	dh_installsysusers --name=$(PKGALIAS)
+	
+	install -D -m755     $(BUILDDIR)/vault            $(PKGDIR)/usr/bin/$(PKGALIAS)
+
+override_dh_auto_test:
+	# Check vault runs and is the correct version
+	$(BUILDDIR)/vault --version | head -1 | grep -qF -- "v$(DEB_VERSION_UPSTREAM)"
+
+override_dh_installsystemd:
+	dh_installsystemd --name=$(PKGALIAS)
+
+override_dh_installinit:
+	dh_installinit --name=$(PKGALIAS)
+
+override_dh_golang:
+	@echo "Skipping! dh_golang does not support external GOPATH build depends..."

debian/vault-ldflags.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# Small shim to properly generate the ldflags
+# Vault expects for its buildconf
+
+xpath=github.com/hashicorp/vault/sdk/version
+version=$1 commit=$2 builddate=$3
+
+printf -- '%s ' \
+  "-linkmode=external" \
+  "-compressdwarf=false" \
+  $(
+    printf -- "-X ${xpath}.%s " \
+      "Version=${version}" \
+      "GitCommit=${commit}" \
+      "BuildDate=${builddate}"
+  )