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LDAPUserProvider.php
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LDAPUserProvider.php
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<?php
namespace App\Auth;
use App\User;
use Illuminate\Auth\EloquentUserProvider;
use Illuminate\Support\Facades\Hash;
use Illuminate\Contracts\Auth\Authenticatable;
use Illuminate\Contracts\Auth\UserProvider;
/**
* A user provider that integrates an LDAP deployment.
*/
class LDAPUserProvider extends EloquentUserProvider implements UserProvider
{
/**
* Retrieve the user by its ID.
*
* @param string $identifier The unique ID for the user to attempt to retrieve.
*
* @return \Illuminate\Contracts\Auth\Authenticatable|null
*/
public function retrieveById($identifier)
{
return parent::retrieveById($identifier);
}
/**
* Retrieve the user by its credentials.
*
* Please note that this function also validates the password.
*
* @param array $credentials An array containing the email and password.
*
* @return User|null
*/
public function retrieveByCredentials(array $credentials)
{
$entries = User::where('email', '=', $credentials['email']);
$count = $entries->count();
if ($count == 1) {
$user = $entries->select(['id', 'email', 'password', 'password_ldap'])->first();
if (!$this->validateCredentials($user, $credentials)) {
return null;
}
return $user;
}
if ($count > 1) {
\Log::warning("Multiple entries for {$credentials['email']}");
} else {
\Log::warning("No entries for {$credentials['email']}");
}
return null;
}
/**
* Validate the credentials for a user.
*
* @param Authenticatable $user The user.
* @param array $credentials The credentials.
*
* @return bool
*/
public function validateCredentials(Authenticatable $user, array $credentials): bool
{
$authenticated = false;
if ($user->email == $credentials['email']) {
if (!empty($user->password)) {
if (Hash::check($credentials['password'], $user->password)) {
$authenticated = true;
}
} elseif (!empty($user->password_ldap)) {
$hash = '{SSHA512}' . base64_encode(
pack('H*', hash('sha512', $credentials['password']))
);
if ($hash == $user->password_ldap) {
$authenticated = true;
}
} else {
\Log::error("Incomplete credentials for {$user->email}");
}
}
// TODO: update last login time
// TODO: Update password if necessary, examine whether writing to
// user->password is sufficient?
if ($authenticated) {
\Log::info("Successful authentication for {$user->email}");
if (empty($user->password) || empty($user->password_ldap)) {
$user->password = $credentials['password'];
$user->save();
}
} else {
// TODO: Try actual LDAP?
\Log::info("Authentication failed for {$user->email}");
}
return $authenticated;
}
}

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