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package version
import (
"bytes"
"fmt"
"os/exec"
"strings"
"github.com/containers/storage/pkg/fileutils"
)
const (
UnknownPackage = "Unknown"
)
// Note: This function is copied from containers/podman libpod/util.go
// Please see https://github.com/containers/common/pull/1460
func queryPackageVersion(cmdArg ...string) string {
err := fileutils.Exists(cmdArg[0])
if err != nil {
return ""
}
output := UnknownPackage
if 1 < len(cmdArg) {
cmd := exec.Command(cmdArg[0], cmdArg[1:]...)
if outp, err := cmd.Output(); err == nil {
output = string(outp)
switch cmdArg[0] {
case "/usr/bin/dlocate":
// can return multiple matches
l := strings.Split(output, "\n")
output = l[0]
r := strings.Split(output, ": ")
regexpFormat := `^..\s` + r[0] + `\s`
cmd = exec.Command(cmdArg[0], "-P", regexpFormat, "-l")
cmd.Env = []string{"COLUMNS=160"} // show entire value
// dlocate always returns exit code 1 for list command
if outp, _ = cmd.Output(); len(outp) > 0 {
lines := strings.Split(string(outp), "\n")
if len(lines) > 1 {
line := lines[len(lines)-2] // trailing newline
f := strings.Fields(line)
if len(f) >= 2 {
return f[1] + "_" + f[2]
}
}
}
case "/usr/bin/dpkg":
r := strings.Split(output, ": ")
queryFormat := `${Package}_${Version}_${Architecture}`
cmd = exec.Command("/usr/bin/dpkg-query", "-f", queryFormat, "-W", r[0])
if outp, err := cmd.Output(); err == nil {
output = string(outp)
}
case "/usr/bin/pacman":
pkg := strings.Trim(output, "\n")
cmd = exec.Command(cmdArg[0], "-Q", "--", pkg)
if outp, err := cmd.Output(); err == nil {
output = strings.ReplaceAll(string(outp), " ", "-")
}
case "/sbin/apk":
prefix := cmdArg[len(cmdArg)-1] + " is owned by "
output = strings.Replace(output, prefix, "", 1)
}
}
}
return strings.Trim(output, "\n")
}
// Note: This function is copied from containers/podman libpod/util.go
// Please see https://github.com/containers/common/pull/1460
func Package(program string) string { // program is full path
err := fileutils.Exists(program)
if err != nil {
return UnknownPackage
}
type Packager struct {
Format string
Command []string
}
packagers := []Packager{
{"rpm", []string{"/usr/bin/rpm", "-q", "-f"}},
{"deb", []string{"/usr/bin/dlocate", "-F"}}, // Debian, Ubuntu (quick)
{"deb", []string{"/usr/bin/dpkg", "-S"}}, // Debian, Ubuntu (slow)
{"pacman", []string{"/usr/bin/pacman", "-Qoq"}}, // Arch
{"gentoo", []string{"/usr/bin/qfile", "-qv"}}, // Gentoo (quick)
{"gentoo", []string{"/usr/bin/equery", "b"}}, // Gentoo (slow)
{"apk", []string{"/sbin/apk", "info", "-W"}}, // Alpine
{"pkg", []string{"/usr/local/sbin/pkg", "which", "-q"}}, // FreeBSD
}
lastformat := ""
for _, packager := range packagers {
if packager.Format == lastformat {
continue
}
cmd := packager.Command
cmd = append(cmd, program)
if out := queryPackageVersion(cmd...); out != UnknownPackage {
if out == "" {
continue
}
return out
}
lastformat = packager.Format
}
return UnknownPackage
}
// Note: This function is copied from containers/podman libpod/util.go
// Please see https://github.com/containers/common/pull/1460
func Program(name string) (string, error) {
return program(name, false)
}
func ProgramDnsname(name string) (string, error) {
return program(name, true)
}
func program(program string, dnsname bool) (string, error) {
cmd := exec.Command(program, "--version")
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err := cmd.Run()
if err != nil {
return "", fmt.Errorf("`%v --version` failed: %v %v (%v)", program, stderr.String(), stdout.String(), err)
}
output := strings.TrimSuffix(stdout.String(), "\n")
// dnsname --version returns the information to stderr
if dnsname {
output = strings.TrimSuffix(stderr.String(), "\n")
}
return output, nil
}
|
