78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
package distro
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"os"
|
|
|
|
"go.arsenm.dev/lure/internal/shutils"
|
|
"mvdan.cc/sh/v3/expand"
|
|
"mvdan.cc/sh/v3/interp"
|
|
"mvdan.cc/sh/v3/syntax"
|
|
)
|
|
|
|
var ErrParse = errors.New("could not parse os-release file")
|
|
|
|
type OSRelease struct {
|
|
Name string
|
|
PrettyName string
|
|
ID string
|
|
BuildID string
|
|
ANSIColor string
|
|
HomeURL string
|
|
DocumentationURL string
|
|
SupportURL string
|
|
BugReportURL string
|
|
Logo string
|
|
}
|
|
|
|
// OSReleaseName returns the NAME field of the
|
|
func ParseOSRelease(ctx context.Context) (*OSRelease, error) {
|
|
fl, err := os.Open("/usr/lib/os-release")
|
|
if err != nil {
|
|
fl, err = os.Open("/etc/os-release")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
file, err := syntax.NewParser().Parse(fl, "/usr/lib/os-release")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
fl.Close()
|
|
|
|
// Create new shell interpreter with nop open, exec, readdir, and stat handlers
|
|
// as well as no environment variables in order to prevent vulnerabilities
|
|
// caused by changing the os-release file.
|
|
runner, err := interp.New(
|
|
interp.OpenHandler(shutils.NopOpen),
|
|
interp.ExecHandler(shutils.NopExec),
|
|
interp.ReadDirHandler(shutils.NopReadDir),
|
|
interp.StatHandler(shutils.NopStat),
|
|
interp.Env(expand.ListEnviron()),
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
err = runner.Run(ctx, file)
|
|
if err != nil {
|
|
return nil, ErrParse
|
|
}
|
|
|
|
return &OSRelease{
|
|
Name: runner.Vars["NAME"].Str,
|
|
PrettyName: runner.Vars["PRETTY_NAME"].Str,
|
|
ID: runner.Vars["ID"].Str,
|
|
BuildID: runner.Vars["BUILD_ID"].Str,
|
|
ANSIColor: runner.Vars["ANSI_COLOR"].Str,
|
|
HomeURL: runner.Vars["HOME_URL"].Str,
|
|
DocumentationURL: runner.Vars["DOCUMENTATION_URL"].Str,
|
|
SupportURL: runner.Vars["SUPPORT_URL"].Str,
|
|
BugReportURL: runner.Vars["BUG_REPORT_URL"].Str,
|
|
Logo: runner.Vars["LOGO"].Str,
|
|
}, nil
|
|
}
|