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() +}