Please note that the function ssh2_auth_password raises PHP warning(!) on bad authentication. To avoid the warning, use the "silence" ("@") operator.
<?php
$ssh = ssh2_connect($host);
if (false === $ssh) {
die('connection failed');
}
$auth = @ssh2_auth_password($ssh, $user, $password);
if (false === $auth) {
die('authentication failed');
}
?>
ssh2_auth_password
(PECL ssh2 >= 0.9.0)
ssh2_auth_password — SSH 上でプレーンなパスワードを使用した認証を行う
説明
SSH 上でプレーンなパスワードを使用した認証を行います。 バージョン 0.12 以降、この関数は keyboard_interactive 方式にも対応するようになりました。
パラメータ
-
session -
ssh2_connect() のコールによって取得した SSH 接続リンク ID。
-
username -
リモートのユーザー名。
-
password -
usernameのパスワード。
戻り値
成功した場合に true を、失敗した場合に false を返します。
例
例1 パスワードを用いた認証
<?php
$connection = ssh2_connect('shell.example.com', 22);
if (ssh2_auth_password($connection, 'username', 'secret')) {
echo "Authentication Successful!\n";
} else {
die('Authentication Failed...');
}
?>
add a note
User Contributed Notes 3 notes
sgchris at gmail dot com ¶
9 years ago
wally at soggysoftware dot co dot uk ¶
17 years ago
This function is useful for authenticating website clients against local (or remote) Unix users.
I'd played around with Apache+PAM, various mod_auths and homebrewed shell programs and even NIS, but to authenticate a user against a Unix shadow file fundamentally requires root priviledges, so either your PHP script needs root or an external program needs it's sticky bit set. Both of these have *serious* security implications.
Using SSH, the overhead is obviously going to be greater but you're trusting a root service that's been (and continues to be) really well tested. Just try authing with SSH against localhost (or another host if you want).
noels01 at gmx dot net ¶
19 years ago
Do not try to authenticate or log in more than once on a ssh2 connection. It won't work. You'll need a new connection via ssh2_connect() which will result in a poor performance if you're doing several connects to the same server.
