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// Copyright 2014 The Gogs Authors. All rights reserved.
// SPDX-License-Identifier: MIT
//go:build pam
package pam
import (
"errors"
"github.com/msteinert/pam"
)
// Supported is true when built with PAM
var Supported = true
// Auth pam auth service
func Auth(serviceName, userName, passwd string) (string, error) {
t, err := pam.StartFunc(serviceName, userName, func(s pam.Style, msg string) (string, error) {
switch s {
case pam.PromptEchoOff:
return passwd, nil
case pam.PromptEchoOn, pam.ErrorMsg, pam.TextInfo:
return "", nil
}
return "", errors.New("Unrecognized PAM message style")
})
if err != nil {
return "", err
}
if err = t.Authenticate(0); err != nil {
return "", err
}
if err = t.AcctMgmt(0); err != nil {
return "", err
}
// PAM login names might suffer transformations in the PAM stack.
// We should take whatever the PAM stack returns for it.
return t.GetItem(pam.User)
}
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