snow/wireguard-go
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main: simplify warnings

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This commit is contained in:
Jason A. Donenfeld 2019-09-08 10:56:00 -05:00
parent 4cd06c0925
commit 84b5a4d83d
3 changed files with 1 additions and 44 deletions
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14
Makefile
View file

@ -1,24 +1,10 @@
PREFIX ?= /usr PREFIX ?= /usr
DESTDIR ?= DESTDIR ?=
BINDIR ?= $(PREFIX)/bin BINDIR ?= $(PREFIX)/bin
export GOPATH ?= $(CURDIR)/.gopath
export GO111MODULE := on export GO111MODULE := on
all: generate-version-and-build all: generate-version-and-build
ifeq ($(shell go env GOOS)|$(wildcard .git),linux|)
$(error Do not build this for Linux. Instead use the Linux kernel module. See wireguard.com/install/ for more info.)
else ifeq ($(shell go env GOOS),linux)
ireallywantobuildon_linux.go:
@printf "WARNING: This software is meant for use on non-Linux\nsystems. For Linux, please use the kernel module\ninstead. See wireguard.com/install/ for more info.\n\n" >&2
@printf 'package main\nconst UseTheKernelModuleInstead = 0xdeadbabe\n' > "$@"
clean-ireallywantobuildon_linux.go:
@rm -f ireallywantobuildon_linux.go
.PHONY: clean-ireallywantobuildon_linux.go
clean: clean-ireallywantobuildon_linux.go
wireguard-go: ireallywantobuildon_linux.go
endif
MAKEFLAGS += --no-print-directory MAKEFLAGS += --no-print-directory
generate-version-and-build: generate-version-and-build:

15
donotuseon_linux.go
View file

@ -1,15 +0,0 @@
// +build !android
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
*/
package main
const DoNotUseThisProgramOnLinux = UseTheKernelModuleInstead
// --------------------------------------------------------
// Do not use this on Linux. Instead use the kernel module.
// See wireguard.com/install for more information.
// --------------------------------------------------------

16
main.go
View file

@ -40,31 +40,19 @@ func warning() {
if runtime.GOOS != "linux" || os.Getenv(ENV_WG_PROCESS_FOREGROUND) == "1" { if runtime.GOOS != "linux" || os.Getenv(ENV_WG_PROCESS_FOREGROUND) == "1" {
return return
} }
shouldQuit := os.Getenv("WG_I_PREFER_BUGGY_USERSPACE_TO_POLISHED_KMOD") != "1"
fmt.Fprintln(os.Stderr, "WARNING WARNING WARNING WARNING WARNING WARNING WARNING") fmt.Fprintln(os.Stderr, "WARNING WARNING WARNING WARNING WARNING WARNING WARNING")
fmt.Fprintln(os.Stderr, "W G") fmt.Fprintln(os.Stderr, "W G")
fmt.Fprintln(os.Stderr, "W You are running this software on a Linux kernel, G") fmt.Fprintln(os.Stderr, "W You are running this software on a Linux kernel, G")
fmt.Fprintln(os.Stderr, "W which is probably unnecessary and foolish. This G") fmt.Fprintln(os.Stderr, "W which is probably unnecessary and misguided. This G")
fmt.Fprintln(os.Stderr, "W is because the Linux kernel has built-in first G") fmt.Fprintln(os.Stderr, "W is because the Linux kernel has built-in first G")
fmt.Fprintln(os.Stderr, "W class support for WireGuard, and this support is G") fmt.Fprintln(os.Stderr, "W class support for WireGuard, and this support is G")
fmt.Fprintln(os.Stderr, "W much more refined than this slower userspace G") fmt.Fprintln(os.Stderr, "W much more refined than this slower userspace G")
fmt.Fprintln(os.Stderr, "W implementation. For more information on G") fmt.Fprintln(os.Stderr, "W implementation. For more information on G")
fmt.Fprintln(os.Stderr, "W installing the kernel module, please visit: G") fmt.Fprintln(os.Stderr, "W installing the kernel module, please visit: G")
fmt.Fprintln(os.Stderr, "W https://www.wireguard.com/install G") fmt.Fprintln(os.Stderr, "W https://www.wireguard.com/install G")
if shouldQuit {
fmt.Fprintln(os.Stderr, "W G")
fmt.Fprintln(os.Stderr, "W If you still want to use this program, against G")
fmt.Fprintln(os.Stderr, "W the advice here, please first export this G")
fmt.Fprintln(os.Stderr, "W environment variable: G")
fmt.Fprintln(os.Stderr, "W WG_I_PREFER_BUGGY_USERSPACE_TO_POLISHED_KMOD=1 G")
}
fmt.Fprintln(os.Stderr, "W G") fmt.Fprintln(os.Stderr, "W G")
fmt.Fprintln(os.Stderr, "WARNING WARNING WARNING WARNING WARNING WARNING WARNING") fmt.Fprintln(os.Stderr, "WARNING WARNING WARNING WARNING WARNING WARNING WARNING")
if shouldQuit {
os.Exit(1)
}
} }
func main() { func main() {
@ -75,8 +63,6 @@ func main() {
warning() warning()
// parse arguments
var foreground bool var foreground bool
var interfaceName string var interfaceName string
if len(os.Args) < 2 || len(os.Args) > 3 { if len(os.Args) < 2 || len(os.Args) > 3 {