mirror of
https://github.com/containers/podman.git
synced 2025-05-20 16:47:39 +08:00
106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
package version
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import (
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"bytes"
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"fmt"
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"os"
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"os/exec"
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"strings"
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)
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const (
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UnknownPackage = "Unknown"
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)
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// Note: This function is copied from containers/podman libpod/util.go
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// Please see https://github.com/containers/common/pull/1460
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func queryPackageVersion(cmdArg ...string) string {
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output := UnknownPackage
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if 1 < len(cmdArg) {
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cmd := exec.Command(cmdArg[0], cmdArg[1:]...)
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if outp, err := cmd.Output(); err == nil {
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output = string(outp)
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deb := false
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if cmdArg[0] == "/usr/bin/dlocate" {
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// can return multiple matches
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l := strings.Split(output, "\n")
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output = l[0]
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deb = true
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} else if cmdArg[0] == "/usr/bin/dpkg" {
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deb = true
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}
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if deb {
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r := strings.Split(output, ": ")
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queryFormat := `${Package}_${Version}_${Architecture}`
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cmd = exec.Command("/usr/bin/dpkg-query", "-f", queryFormat, "-W", r[0])
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if outp, err := cmd.Output(); err == nil {
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output = string(outp)
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}
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}
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}
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if cmdArg[0] == "/sbin/apk" {
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prefix := cmdArg[len(cmdArg)-1] + " is owned by "
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output = strings.Replace(output, prefix, "", 1)
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}
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}
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return strings.Trim(output, "\n")
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}
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// Note: This function is copied from containers/podman libpod/util.go
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// Please see https://github.com/containers/common/pull/1460
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func Package(program string) string { // program is full path
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_, err := os.Stat(program)
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if err != nil {
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return UnknownPackage
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}
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packagers := [][]string{
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{"/usr/bin/rpm", "-q", "-f"},
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{"/usr/bin/dlocate", "-F"}, // Debian, Ubuntu (quick)
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{"/usr/bin/dpkg", "-S"}, // Debian, Ubuntu (slow)
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{"/usr/bin/pacman", "-Qo"}, // Arch
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{"/usr/bin/qfile", "-qv"}, // Gentoo (quick)
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{"/usr/bin/equery", "b"}, // Gentoo (slow)
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{"/sbin/apk", "info", "-W"}, // Alpine
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{"/usr/local/sbin/pkg", "which", "-q"}, // FreeBSD
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}
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for _, cmd := range packagers {
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cmd = append(cmd, program)
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if out := queryPackageVersion(cmd...); out != UnknownPackage {
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return out
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}
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}
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return UnknownPackage
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}
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// Note: This function is copied from containers/podman libpod/util.go
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// Please see https://github.com/containers/common/pull/1460
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func Program(name string) (string, error) {
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return program(name, false)
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}
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func ProgramDnsname(name string) (string, error) {
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return program(name, true)
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}
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func program(program string, dnsname bool) (string, error) {
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cmd := exec.Command(program, "--version")
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var stdout bytes.Buffer
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var stderr bytes.Buffer
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cmd.Stdout = &stdout
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cmd.Stderr = &stderr
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err := cmd.Run()
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if err != nil {
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return "", fmt.Errorf("`%v --version` failed: %v %v (%v)", program, stderr.String(), stdout.String(), err)
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}
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output := strings.TrimSuffix(stdout.String(), "\n")
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// dnsname --version returns the information to stderr
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if dnsname {
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output = strings.TrimSuffix(stderr.String(), "\n")
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}
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return output, nil
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}
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