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package utils
import (
"errors"
"fmt"
"os"
"os/exec"
"strconv"
"strings"
buildahCLI "github.com/containers/buildah/pkg/cli"
"github.com/containers/podman/v4/cmd/podman/registry"
)
type OutputErrors []error
func (o OutputErrors) PrintErrors() (lastError error) {
if len(o) == 0 {
return
}
lastError = o[len(o)-1]
for e := 0; e < len(o)-1; e++ {
fmt.Fprintf(os.Stderr, "Error: %s\n", o[e])
}
return
}
/* For remote client, server does not returns error with exit code
instead returns a message and we cast it to a new error.
Following function performs parsing on build error and returns
exit status which was expected for this current build
*/
func ExitCodeFromBuildError(errorMsg string) (int, error) {
if strings.Contains(errorMsg, "exit status") {
errorSplit := strings.Split(errorMsg, " ")
if errorSplit[len(errorSplit)-2] == "status" {
tmpSplit := strings.Split(errorSplit[len(errorSplit)-1], "\n")
exitCodeRemote, err := strconv.Atoi(tmpSplit[0])
if err == nil {
return exitCodeRemote, nil
}
return buildahCLI.ExecErrorCodeGeneric, err
}
}
return buildahCLI.ExecErrorCodeGeneric, errors.New("message does not contains a valid exit code")
}
// HandleOSExecError checks the given error for an exec.ExitError error and
// sets the same podman exit code as the error.
// No error will be returned in this case to make sure things like podman
// unshare false work correctly without extra output.
// When the exec file does not exists we set the exit code to 127, for
// permission errors 126 is used as exit code. In this case we still return
// the error so the user gets an error message.
// If the error is nil it returns nil.
func HandleOSExecError(err error) error {
if err == nil {
return nil
}
var exitError *exec.ExitError
if errors.As(err, &exitError) {
// the user command inside the unshare/ssh env has failed
// we set the exit code, do not return the error to the user
// otherwise "exit status X" will be printed
registry.SetExitCode(exitError.ExitCode())
return nil
}
// cmd.Run() can return fs.ErrNotExist, fs.ErrPermission or exec.ErrNotFound
// follow podman run/exec standard with the exit codes
if errors.Is(err, os.ErrNotExist) || errors.Is(err, exec.ErrNotFound) {
registry.SetExitCode(127)
} else if errors.Is(err, os.ErrPermission) {
registry.SetExitCode(126)
}
return err
}
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