82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
/*
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© Copyright IBM Corporation 2018, 2019
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package user
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import (
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"fmt"
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"os/user"
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"strings"
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"github.com/ibm-messaging/mq-container/internal/command"
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)
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// User holds information on primary and supplemental OS groups
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type User struct {
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UID string
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Name string
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PrimaryGID string
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SupplementalGID []string
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}
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// GetUser returns the current user and group information
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func GetUser() (User, error) {
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u, err := user.Current()
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if err != nil {
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return User{}, err
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}
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g, err := getCurrentUserGroups()
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if err != nil {
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return User{}, err
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}
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if err != nil && len(g) == 0 {
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return User{
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UID: u.Uid,
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Name: u.Name,
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PrimaryGID: u.Gid,
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SupplementalGID: []string{},
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}, nil
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}
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// Look for the primary group in the list of group IDs
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for i, v := range g {
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if v == u.Gid {
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// Remove the element from the slice
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g = append(g[:i], g[i+1:]...)
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}
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}
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return User{
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UID: u.Uid,
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Name: u.Name,
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PrimaryGID: u.Gid,
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SupplementalGID: g,
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}, nil
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}
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func getCurrentUserGroups() ([]string, error) {
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var nilArray []string
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out, _, err := command.Run("id", "--groups")
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if err != nil {
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return nilArray, err
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}
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out = strings.TrimSpace(out)
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if out == "" {
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return nilArray, fmt.Errorf("Unable to determine groups for current user")
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}
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groups := strings.Split(out, " ")
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return groups, nil
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}
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