1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
| /** HTTP Digest authentication class */
class HTTPDigest
{
//The Digest opaque value (any string will do, never sent in plain text over the wire).
var $opaque = 'opaque-baznat';
// The authentication realm name.
var $realm = 'Baznat-Web';
// The base URL of the application, auth data will be used for all resources under this URL.
function baseURL() {
global $g_mode_local;
if ($g_mode_local) {
return "/";
}
return "/php/"; // autrement dit: www.baznat.net/php/
}
// Are passwords stored as an a1 hash (username:realm:password) rather than plain text.
// The private key.
var $privateKey = 'sdfgljhsdglzqerbhbezy';
// The life of the nonce value in seconds
var $nonceLife = 10800; /* 60 secondes*60 minutes*3 == 3 heures */
var $username;
function getNonce() {
$time = ceil(time() / $this->nonceLife) * $this->nonceLife;
return md5(date('Y-m-d H:i', $time).':'.$_SERVER['REMOTE_ADDR'].':'.$this->privateKey);
}
function getOpaque() {
return md5($this->opaque);
}
function getRealm() {
return $this->realm;
}
function getAuthHeader() {
/* header "Authorization" transféré via le .htaccess */
return $_SERVER['REMOTE_USER'];
}
function getEncPAssword($u, $p) {
return md5($u.':'.$this->getRealm().':'.$p);
}
function send() {
header('HTTP/1.0 401 Unauthorized');
header('WWW-Authenticate: Digest '.
'realm="'.$this->realm.'", '.
'domain="'.$this->baseURL().'", '.
'qop=auth, '.
'algorithm=MD5, '.
'nonce="'.$this->getNonce().'", '.
'opaque="'.$this->getOpaque().(time() + 10500).'"'
); // au bout de 60 secondes * 60 minutes * 3 heure - 5 minutes d'inactivité, l'identification est re-demandée
}
function authenticate($users, &$last_possible, &$given_name) {
global $g_mode_local;
$last_possible = 0;
$given_name = false;
$authorization = $this->getAuthHeader();
if ($authorization) {
if (substr($authorization, 0, 5) == 'Basic') {
errlog(__FILE__, __LINE__, "l'utilisateur tente une authentification HTTP basic, HTTP Digest attendu", false);
exit;
}
if (preg_match('/username="([^"]+)"/', $authorization, $username) &&
preg_match('/nonce="([^"]+)"/', $authorization, $nonce) &&
preg_match('/response="([^"]+)"/', $authorization, $response) &&
preg_match('/opaque="([^"]+)"/', $authorization, $opaque) &&
preg_match('/uri="([^"]+)"/', $authorization, $uri) ) {
$given_name = $username = $username[1];
if ($g_mode_local && strcmp(strtolower($_SERVER['SERVER_NAME']), "localhost") == 0) {
// !!! ATTENTION ceci desactive la verification du mot de passe en mode local !!!
$last_possible = substr($opaque[1], $l = strlen($this->getOpaque()));
$users->get_password_hash($username);
return $username;
}
$requestURI = $_SERVER['REQUEST_URI'];
if (strpos($requestURI, '?') !== FALSE) { // hack for IE which does not pass querystring in URI element of Digest string or in response hash
$requestURI = substr($requestURI, 0, strlen($uri[1]));
}
if (!est_un_login($username)) {
errlog(__FILE__, __LINE__, "Login mal formé: ABANDON", false);
return NULL;
}
$passphrase = $users->get_password_hash($username);
$last_possible = substr($opaque[1], $l = strlen($this->getOpaque()));
$opaque = substr($opaque[1], 0, $l);
if (isset($passphrase) &&
$opaque == $this->getOpaque() &&
$uri[1] == $requestURI &&
$nonce[1] == $this->getNonce() ) {
$a1 = $passphrase;
$a2 = md5($_SERVER['REQUEST_METHOD'].':'.$requestURI);
if (preg_match('/qop="?([^,\s"]+)/', $authorization, $qop) &&
preg_match('/nc=([^,\s"]+)/', $authorization, $nc) &&
preg_match('/cnonce="([^"]+)"/', $authorization, $cnonce)) {
$expectedResponse = md5($a1.':'.$nonce[1].':'.$nc[1].':'.$cnonce[1].':'.$qop[1].':'.$a2);
}
else {
$expectedResponse = md5($a1.':'.$nonce[1].':'.$a2);
}
if ($response[1] == $expectedResponse) {
return $username;
}
else {
errlog(__FILE__, __LINE__, "mauvais mot de passe pour $given_name", false);
}
}
else if ($nonce[1] != $this->getNonce()) {
errlog(__FILE__, __LINE__, "Nonce invalide, serveur = ".$this->getNonce()." != {$nonce[1]}", false);
}
}
}
else {
errlog(__FILE__, __LINE__, "HTTP Digest headers not being passed to PHP by the server, unable to authenticate user", false);
exit;
}
return NULL;
}
function doAuth($user) {
if (!$this->getAuthHeader()) {
$this->send();
$style = "<link rel='stylesheet' type='text/css' href='../style/baznat.css'/>\n";
$htm = htm_head("Authentification invalide", "", $style, null);
$htm .= "<body>".htm_bandeau_haut(false, "../")."<div id='centre_pb'>";
$htm .= "<p id='pb_ident'>Pas d'authentification reçue, vous n'êtes pas connecté.<br><a href='./actions.php'>Connexion</a></p>";
$htm .= "</div>".htm_bandeau_bas()."</body>";
echo $htm;
errlog(__FILE__, __LINE__, "Le navigateur n'a pas renvoyé d'identification: demande de connexion ou annulation de connexion", false);
exit;
}
$this->username = $this->authenticate($user, $last_possible, $given_name);
if (!$this->username) {
$this->send();
$style = "<link rel='stylesheet' type='text/css' href='../style/baznat.css'/>\n";
$htm = htm_head("Accès refusé", "", $style, null);
$htm .= "<body>".htm_bandeau_haut(false, "../")."<div id='centre_pb'>";
$htm .= "<p id='pb_ident'>Accès refusé, vérifiez votre mot de passe (contactez l'administrateur en cas de refus persistant).<br><a href='./actions.php'>Connexion</a></p>";
$htm .= "</div>".htm_bandeau_bas()."</body>";
echo $htm;
errlog(__FILE__, __LINE__, "Accès refusé ".($given_name ? "pour $given_name" : "par l'utilisateur"), false);
exit;
}
else if (time() > $last_possible) {
$this->send();
$style = "<link rel='stylesheet' type='text/css' href='../style/baznat.css'/>\n";
$htm = htm_head("Session expirée", "", $style, null);
$htm .= "<body>".htm_bandeau_haut(false, "../")."<div id='centre_pb'>";
$htm .= "<p id='pb_ident'>Votre session est restée inactive trop longtemps.<br>Vous devez vous <a href='./actions.php'>identifier</a> de nouveau.</p>";
$htm .= "</div>".htm_bandeau_bas()."</body>";
echo $htm;
errlog(__FILE__, __LINE__, "Session expirée ".($given_name ? "pour $given_name" : "et non renouvelée"), false);
exit;
}
else if (time() - ($last_possible - 10500) < 70) {
errlog(__FILE__, __LINE__, $this->username." est connecté", false);
}
}
}
$g_HTTPDigest = new HTTPDigest();
$g_user = new utilisateur();
$g_HTTPDigest->doAuth($g_user);
?> |
Connexion impossible HTTP Digest après la migration d'OVH vers alwaysdata
Répondre avec citation
Partager