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authorJason A. Donenfeld <Jason@zx2c4.com>2018-05-24 01:52:22 +0200
committerJason A. Donenfeld <Jason@zx2c4.com>2018-05-24 02:25:36 +0200
commit4a9de3218e6445742f29fef06f8b2f1dcef6306f (patch)
tree0c5ed4576b7d59c696f567530f6b7cb96f56f490
parentEye before ee except after see (diff)
downloadwireguard-go-4a9de3218e6445742f29fef06f8b2f1dcef6306f.tar.xz
wireguard-go-4a9de3218e6445742f29fef06f8b2f1dcef6306f.zip
Add undocumented --version flag
-rw-r--r--Makefile12
-rw-r--r--main.go5
-rw-r--r--version.go2
3 files changed, 17 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index 4cba1de..93874e9 100644
--- a/Makefile
+++ b/Makefile
@@ -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
diff --git a/main.go b/main.go
index 29693eb..f21de41 100644
--- a/main.go
+++ b/main.go
@@ -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
diff --git a/version.go b/version.go
new file mode 100644
index 0000000..25edead
--- /dev/null
+++ b/version.go
@@ -0,0 +1,2 @@
+package main
+const WireGuardGoVersion = "0.0.20180519"