From d3f9a9da0d60a7de30149a8c59c573d7ddb9f143 Mon Sep 17 00:00:00 2001
From: Harshavardhana <harsha@harshavardhana.net>
Date: Wed, 9 Sep 2015 15:29:28 -0700
Subject: [PATCH] Verify golang runtime for 0.5.1 and above, also verify if
runner is a root
---
main.go | 11 ++++-
verify-runtime.go | 100 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 110 insertions(+), 1 deletion(-)
create mode 100644 verify-runtime.go
diff --git a/main.go b/main.go
index 4b2bddbb0..c69a0ea92 100644
--- a/main.go
+++ b/main.go
@@ -31,10 +31,19 @@ import (
func init() {
// Check for the environment early on and gracefuly report.
- _, err := user.Current()
+ u, err := user.Current()
if err != nil {
Fatalf("Unable to obtain user's home directory. \nError: %s\n", err)
}
+ var uid int
+ uid, err = strconv.Atoi(u.Uid)
+ if err != nil {
+ Fatalf("Unable to convert user id to an integer. \nError: %s\n", err)
+ }
+ if uid == 0 {
+ Fatalln("Please run as a normal user, running as root is disallowed")
+ }
+ verifyMinioRuntime()
}
// Tries to get os/arch/platform specific information
diff --git a/verify-runtime.go b/verify-runtime.go
new file mode 100644
index 000000000..c21d8fcf8
--- /dev/null
+++ b/verify-runtime.go
@@ -0,0 +1,100 @@
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+ "fmt"
+ "regexp"
+ "runtime"
+ "strconv"
+ "strings"
+)
+
+var minGolangRuntimeVersion = "1.5.1"
+
+// following code handles the current Golang release styles, we might have to update them in future
+// if golang community divulges from the below formatting style.
+const (
+ betaRegexp = "beta[0-9]"
+ rcRegexp = "rc[0-9]"
+)
+
+func getNormalizedGolangVersion() string {
+ version := strings.TrimPrefix(runtime.Version(), "go")
+ br := regexp.MustCompile(betaRegexp)
+ rr := regexp.MustCompile(rcRegexp)
+ betaStr := br.FindString(version)
+ version = strings.TrimRight(version, betaStr)
+ rcStr := rr.FindString(version)
+ version = strings.TrimRight(version, rcStr)
+ return version
+}
+
+type version struct {
+ major, minor, patch string
+}
+
+func newVersion(v string) version {
+ var ver version
+ verSlice := strings.Split(v, ".")
+ if len(verSlice) > 2 {
+ ver = version{
+ major: verSlice[0],
+ minor: verSlice[1],
+ patch: verSlice[2],
+ }
+ return ver
+ }
+ ver = version{
+ major: verSlice[0],
+ minor: verSlice[1],
+ patch: "0",
+ }
+ return ver
+}
+
+func (v1 version) String() string {
+ return fmt.Sprintf("%s%s%s", v1.major, v1.minor, v1.patch)
+}
+
+func (v1 version) Version() int {
+ ver, e := strconv.Atoi(v1.String())
+ if e != nil {
+ Fatalln("Unable to parse version string.")
+ }
+ return ver
+}
+
+func (v1 version) LessThan(v2 version) bool {
+ if v1.Version() < v2.Version() {
+ return true
+ }
+ return false
+}
+
+func checkGolangRuntimeVersion() {
+ v1 := newVersion(getNormalizedGolangVersion())
+ v2 := newVersion(minGolangRuntimeVersion)
+ if v1.LessThan(v2) {
+ Errorln("Old Golang runtime version ‘" + v1.String() + "’ detected., ‘mc’ requires minimum go1.5 or later.")
+ }
+}
+
+func verifyMinioRuntime() {
+ // add any other checks here.
+ checkGolangRuntimeVersion()
+}