mirror of
https://github.com/gravitational/teleport.git
synced 2026-09-21 14:35:22 +08:00
Marco Dinis
d87c4841f8
We will create a new package that installs teleport in the local system. In order to do so, we'll need to read `/etc/os-release`. This PR adds the required fields for detecting the distro if it is based on a popuplar distro.
93 lines
2.3 KiB
Go
93 lines
2.3 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package linux
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import (
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"bufio"
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"io"
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"os"
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"strings"
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"github.com/gravitational/trace"
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)
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// OSRelease represents the information contained in the /etc/os-release file.
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type OSRelease struct {
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PrettyName string
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Name string
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VersionID string
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Version string
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VersionCodename string
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ID string
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IDLike string
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}
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// ParseOSRelease reads the /etc/os-release contents.
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func ParseOSRelease() (*OSRelease, error) {
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f, err := os.Open("/etc/os-release")
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if err != nil {
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return nil, trace.Wrap(err)
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}
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defer f.Close()
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return ParseOSReleaseFromReader(f)
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}
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// ParseOSReleaseFromReader reads an /etc/os-release data stream from in.
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func ParseOSReleaseFromReader(in io.Reader) (*OSRelease, error) {
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m := make(map[string]string)
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scan := bufio.NewScanner(in)
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for scan.Scan() {
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line := scan.Text()
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line = strings.TrimSpace(line) // Remove spaces from start and end.
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if len(line) == 0 {
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continue // Skip empty lines.
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}
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if line[0] == '#' {
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continue // Skip comments.
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}
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vals := strings.Split(line, "=")
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if len(vals) != 2 {
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continue // Skip unexpected line.
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}
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key := strings.TrimSpace(vals[0])
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val := strings.Trim(vals[1], `"' `)
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m[key] = val
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}
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if err := scan.Err(); err != nil {
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return nil, trace.Wrap(err)
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}
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return &OSRelease{
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PrettyName: m["PRETTY_NAME"],
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Name: m["NAME"],
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VersionID: m["VERSION_ID"],
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Version: m["VERSION"],
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VersionCodename: m["VERSION_CODENAME"],
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ID: m["ID"],
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IDLike: m["ID_LIKE"],
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}, nil
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}
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