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// Copyright 2015 Luke Shumaker <lukeshu@sbcglobal.net>.
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This software is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this manual; if not, see
// <http://www.gnu.org/licenses/>.
package hackers_git
import (
"crypto/rand"
p "lukeshu.com/git/go/libnslcd.git/proto"
"math/big"
s "syscall"
)
func (o *Hackers) PAM_Authentication(cred s.Ucred, req p.Request_PAM_Authentication) <-chan p.PAM_Authentication {
o.lock.RLock()
ret := make(chan p.PAM_Authentication)
go func() {
defer o.lock.RUnlock()
defer close(ret)
uid := o.name2uid(req.UserName)
if uid < 0 {
return
}
user := o.users[uid]
obj := p.PAM_Authentication{
AuthenticationResult: p.NSLCD_PAM_AUTH_ERR,
UserName: "",
AuthorizationResult: p.NSLCD_PAM_AUTH_ERR,
AuthorizationError: "",
}
if check_password(req.Password, user.passwd.PwHash) {
obj.AuthenticationResult = p.NSLCD_PAM_SUCCESS
obj.AuthorizationResult = obj.AuthenticationResult
obj.UserName = user.passwd.Name
}
ret <- obj
}()
return ret
}
func (o *Hackers) PAM_Authorization(cred s.Ucred, req p.Request_PAM_Authorization) <-chan p.PAM_Authorization {
o.lock.RLock()
ret := make(chan p.PAM_Authorization)
go func() {
defer o.lock.RUnlock()
defer close(ret)
uid := o.name2uid(req.UserName)
if uid < 0 {
return
}
ret <- p.PAM_Authorization{
Result: p.NSLCD_PAM_SUCCESS,
Error: "",
}
}()
return ret
}
const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
var alphabet_len = big.NewInt(int64(len(alphabet)))
func (o *Hackers) PAM_SessionOpen(cred s.Ucred, req p.Request_PAM_SessionOpen) <-chan p.PAM_SessionOpen {
ret := make(chan p.PAM_SessionOpen)
go func() {
defer close(ret)
var sessionid [24]byte
for i := 0; i < len(sessionid); i++ {
bigint, err := rand.Int(rand.Reader, alphabet_len)
if err != nil {
return
}
sessionid[i] = alphabet[bigint.Int64()]
}
ret <- p.PAM_SessionOpen{SessionID: string(sessionid[:])}
}()
return ret
}
func (o *Hackers) PAM_SessionClose(cred s.Ucred, req p.Request_PAM_SessionClose) <-chan p.PAM_SessionClose {
ret := make(chan p.PAM_SessionClose)
go close(ret)
return ret
}
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