104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
/*
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* LURE - Linux User REpository
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* Copyright (C) 2022 Arsen Musayelyan
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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 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 General Public License for more details.
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*
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* You should have received a copy of the GNU 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 distro
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import (
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"context"
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"errors"
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"os"
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"strings"
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"go.arsenm.dev/lure/internal/shutils"
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"mvdan.cc/sh/v3/expand"
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"mvdan.cc/sh/v3/interp"
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"mvdan.cc/sh/v3/syntax"
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)
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var ErrParse = errors.New("could not parse os-release file")
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type OSRelease struct {
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Name string
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PrettyName string
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ID string
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Like []string
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BuildID string
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ANSIColor string
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HomeURL string
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DocumentationURL string
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SupportURL string
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BugReportURL string
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Logo string
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}
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// OSReleaseName returns the NAME field of the
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func ParseOSRelease(ctx context.Context) (*OSRelease, error) {
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fl, err := os.Open("/usr/lib/os-release")
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if err != nil {
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fl, err = os.Open("/etc/os-release")
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if err != nil {
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return nil, err
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}
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}
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file, err := syntax.NewParser().Parse(fl, "/usr/lib/os-release")
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if err != nil {
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return nil, err
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}
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fl.Close()
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// Create new shell interpreter with nop open, exec, readdir, and stat handlers
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// as well as no environment variables in order to prevent vulnerabilities
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// caused by changing the os-release file.
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runner, err := interp.New(
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interp.OpenHandler(shutils.NopOpen),
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interp.ExecHandler(shutils.NopExec),
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interp.ReadDirHandler(shutils.NopReadDir),
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interp.StatHandler(shutils.NopStat),
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interp.Env(expand.ListEnviron()),
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)
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if err != nil {
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return nil, err
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}
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err = runner.Run(ctx, file)
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if err != nil {
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return nil, ErrParse
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}
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out := &OSRelease{
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Name: runner.Vars["NAME"].Str,
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PrettyName: runner.Vars["PRETTY_NAME"].Str,
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ID: runner.Vars["ID"].Str,
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BuildID: runner.Vars["BUILD_ID"].Str,
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ANSIColor: runner.Vars["ANSI_COLOR"].Str,
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HomeURL: runner.Vars["HOME_URL"].Str,
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DocumentationURL: runner.Vars["DOCUMENTATION_URL"].Str,
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SupportURL: runner.Vars["SUPPORT_URL"].Str,
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BugReportURL: runner.Vars["BUG_REPORT_URL"].Str,
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Logo: runner.Vars["LOGO"].Str,
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}
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if runner.Vars["ID_LIKE"].IsSet() {
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out.Like = strings.Split(runner.Vars["ID_LIKE"].Str, " ")
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}
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return out, nil
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}
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