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1 | <?php | |
2 | // Original from http://www.daniweb.com/code/snippet43.html | |
3 | ||
4 | require_once "config.php"; | |
5 | require_once "classes/db.php"; | |
6 | require_once "autoload.php"; | |
7 | require_once "errorhandler.php"; | |
8 | require_once "lib/accept-to-gettext.php"; | |
9 | require_once "lib/gettext/gettext.inc"; | |
10 | require_once "version.php"; | |
11 | ||
12 | $session_expire = min(2147483647 - time() - 1, max(SESSION_COOKIE_LIFETIME, 86400)); | |
13 | $session_name = (!defined('TTRSS_SESSION_NAME')) ? "ttrss_sid" : TTRSS_SESSION_NAME; | |
14 | ||
15 | if (is_server_https()) { | |
16 | ini_set("session.cookie_secure", true); | |
17 | } | |
18 | ||
19 | ini_set("session.gc_probability", 75); | |
20 | ini_set("session.name", $session_name); | |
21 | ini_set("session.use_only_cookies", true); | |
22 | ini_set("session.gc_maxlifetime", $session_expire); | |
23 | ini_set("session.cookie_lifetime", min(0, SESSION_COOKIE_LIFETIME)); | |
24 | ||
25 | function session_get_schema_version() { | |
26 | global $schema_version; | |
27 | ||
28 | if (!$schema_version) { | |
29 | $row = Db::pdo()->query("SELECT schema_version FROM ttrss_version")->fetch(); | |
30 | ||
31 | $version = $row["schema_version"]; | |
32 | ||
33 | $schema_version = $version; | |
34 | return $version; | |
35 | } else { | |
36 | return $schema_version; | |
37 | } | |
38 | } | |
39 | ||
40 | function validate_session() { | |
41 | if (SINGLE_USER_MODE) return true; | |
42 | ||
43 | if (isset($_SESSION["ref_schema_version"]) && $_SESSION["ref_schema_version"] != session_get_schema_version()) { | |
44 | $_SESSION["login_error_msg"] = | |
45 | __("Session failed to validate (schema version changed)"); | |
46 | return false; | |
47 | } | |
48 | $pdo = Db::pdo(); | |
49 | ||
50 | if ($_SESSION["uid"]) { | |
51 | ||
52 | if (!defined('_SKIP_SESSION_ADDRESS_CHECKS') || !_SKIP_SESSION_ADDRESS_CHECKS) { | |
53 | if ($_SESSION["ip_address"] != $_SERVER["REMOTE_ADDR"]) { | |
54 | $_SESSION["login_error_msg"] = __("Session failed to validate."); | |
55 | return false; | |
56 | } | |
57 | } | |
58 | ||
59 | if ($_SESSION["user_agent"] != sha1($_SERVER['HTTP_USER_AGENT'])) { | |
60 | $_SESSION["login_error_msg"] = __("Session failed to validate."); | |
61 | return false; | |
62 | } | |
63 | ||
64 | $sth = $pdo->prepare("SELECT pwd_hash FROM ttrss_users WHERE id = ?"); | |
65 | $sth->execute([$_SESSION['uid']]); | |
66 | ||
67 | // user not found | |
68 | if ($row = $sth->fetch()) { | |
69 | $pwd_hash = $row["pwd_hash"]; | |
70 | ||
71 | if ($pwd_hash != $_SESSION["pwd_hash"]) { | |
72 | ||
73 | $_SESSION["login_error_msg"] = | |
74 | __("Session failed to validate (password changed)"); | |
75 | ||
76 | return false; | |
77 | } | |
78 | } else { | |
79 | ||
80 | $_SESSION["login_error_msg"] = | |
81 | __("Session failed to validate (user not found)"); | |
82 | ||
83 | return false; | |
84 | ||
85 | } | |
86 | } | |
87 | ||
88 | return true; | |
89 | } | |
90 | ||
91 | /** | |
92 | * @SuppressWarnings(PHPMD.UnusedFormalParameter) | |
93 | */ | |
94 | function ttrss_open ($s, $n) { | |
95 | return true; | |
96 | } | |
97 | ||
98 | function ttrss_read ($id){ | |
99 | global $session_expire; | |
100 | ||
101 | $sth = Db::pdo()->prepare("SELECT data FROM ttrss_sessions WHERE id=?"); | |
102 | $sth->execute([$id]); | |
103 | ||
104 | if ($row = $sth->fetch()) { | |
105 | return base64_decode($row["data"]); | |
106 | ||
107 | } else { | |
108 | $expire = time() + $session_expire; | |
109 | ||
110 | $sth = Db::pdo()->prepare("INSERT INTO ttrss_sessions (id, data, expire) | |
111 | VALUES (?, '', ?)"); | |
112 | $sth->execute([$id, $expire]); | |
113 | ||
114 | return ""; | |
115 | ||
116 | } | |
117 | ||
118 | } | |
119 | ||
120 | function ttrss_write ($id, $data) { | |
121 | global $session_expire; | |
122 | ||
123 | $data = base64_encode($data); | |
124 | $expire = time() + $session_expire; | |
125 | ||
126 | $sth = Db::pdo()->prepare("UPDATE ttrss_sessions SET data=?, expire=? WHERE id=?"); | |
127 | $sth->execute([$data, $expire, $id]); | |
128 | ||
129 | return true; | |
130 | } | |
131 | ||
132 | function ttrss_close () { | |
133 | return true; | |
134 | } | |
135 | ||
136 | function ttrss_destroy($id) { | |
137 | $sth = Db::pdo()->prepare("DELETE FROM ttrss_sessions WHERE id = ?"); | |
138 | $sth->execute([$id]); | |
139 | ||
140 | return true; | |
141 | } | |
142 | ||
143 | /** | |
144 | * @SuppressWarnings(PHPMD.UnusedFormalParameter) | |
145 | */ | |
146 | function ttrss_gc ($expire) { | |
147 | Db::pdo()->query("DELETE FROM ttrss_sessions WHERE expire < " . time()); | |
148 | ||
149 | return true; | |
150 | } | |
151 | ||
152 | if (!SINGLE_USER_MODE /* && DB_TYPE == "pgsql" */) { | |
153 | session_set_save_handler("ttrss_open", | |
154 | "ttrss_close", "ttrss_read", "ttrss_write", | |
155 | "ttrss_destroy", "ttrss_gc"); | |
156 | register_shutdown_function('session_write_close'); | |
157 | } | |
158 | ||
159 | if (!defined('NO_SESSION_AUTOSTART')) { | |
160 | if (isset($_COOKIE[session_name()])) { | |
161 | @session_start(); | |
162 | } | |
163 | } |