snow/wireguard-go
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Add undocumented --version flag

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This commit is contained in:
Jason A. Donenfeld 2018-05-24 01:52:22 +02:00
parent 28a167e828
commit 4a9de3218e
3 changed files with 17 additions and 2 deletions
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12
Makefile
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@ -16,6 +16,14 @@ export GOPATH := $(CURDIR)/.gopath
export PATH := $(PATH):$(CURDIR)/.gopath/bin
GO_IMPORT_PATH := git.zx2c4.com/wireguard-go
version.go:
@export GIT_CEILING_DIRECTORIES="$(realpath $(CURDIR)/..)" && \
tag="$$(git describe --dirty 2>/dev/null)" && \
ver="$$(printf 'package main\nconst WireGuardGoVersion = "%s"\n' "$$tag")" && \
[ "$$(cat $@ 2>/dev/null)" != "$$ver" ] && \
echo "$$ver" > $@ && \
git update-index --assume-unchanged $@ || true
.gopath/.created:
rm -rf .gopath
mkdir -p $(dir .gopath/src/$(GO_IMPORT_PATH))
@ -27,7 +35,7 @@ vendor/.created: Gopkg.toml Gopkg.lock | .gopath/.created
cd .gopath/src/$(GO_IMPORT_PATH) && dep ensure -vendor-only -v
touch $@
wireguard-go: $(wildcard *.go) $(wildcard */*.go) .gopath/.created vendor/.created
wireguard-go: $(wildcard *.go) $(wildcard */*.go) .gopath/.created vendor/.created version.go
go build $(GO_BUILD_EXTRA_ARGS) -v $(GO_IMPORT_PATH)
install: wireguard-go
@ -40,4 +48,4 @@ update-dep: | .gopath/.created
command -v dep >/dev/null || go get -v github.com/golang/dep/cmd/dep
cd .gopath/src/$(GO_IMPORT_PATH) && dep ensure -update -v
.PHONY: clean install update-dep
.PHONY: clean install update-dep version.go

5
main.go
View file

@ -74,6 +74,11 @@ func warning() {
}
func main() {
if len(os.Args) == 2 && os.Args[1] == "--version" {
fmt.Printf("wireguard-go v%s\n\nUserspace WireGuard daemon for %s-%s.\nInformation available at https://www.wireguard.com.\nCopyright (C) Jason A. Donenfeld <Jason@zx2c4.com>.\n", WireGuardGoVersion, runtime.GOOS, runtime.GOARCH)
return
}
warning()
// parse arguments

2
version.go Normal file
View file

@ -0,0 +1,2 @@
package main
const WireGuardGoVersion = "0.0.20180519"