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https://github.com/edgelesssys/constellation.git
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bd63aa3c6b
sed -i '1i/*\nCopyright (c) Edgeless Systems GmbH\n\nSPDX-License-Identifier: AGPL-3.0-only\n*/\n' `grep -rL --include='*.go' 'DO NOT EDIT'` gofumpt -w .
69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package user
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import (
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"bufio"
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"errors"
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"strings"
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"github.com/spf13/afero"
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)
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// Entry is an entry of a '/etc/passwd' file.
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type Entry struct {
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Password string
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UID string
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GID string
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GECOS string
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Directory string
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Shell string
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}
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// Entries contains the information for each user defined in '/etc/passwd'.
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type Entries map[string]Entry
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// Passwd allows to parse users from '/etc/passwd' on the local system.
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type Passwd struct{}
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// Parse opens the '/etc/passwd' file and parses it into a map from usernames to Entries.
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func (p Passwd) Parse(fs afero.Fs) (Entries, error) {
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return p.parseFile(fs, "/etc/passwd")
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}
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// parseFile opens the file and parses it into a map from usernames to Entries.
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func (p Passwd) parseFile(fs afero.Fs, path string) (Entries, error) {
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file, err := fs.Open(path)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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entries := Entries{}
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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// File format: https://man7.org/linux/man-pages/man5/passwd.5.html
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fields := strings.Split(scanner.Text(), ":")
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if len(fields) != 7 {
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return nil, errors.New("invalid number of fields")
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}
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entries[fields[0]] = Entry{
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Password: fields[1],
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UID: fields[2],
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GID: fields[3],
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GECOS: fields[4],
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Directory: fields[5],
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Shell: fields[6],
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}
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}
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return entries, scanner.Err()
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}
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