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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 = max(SESSION_COOKIE_LIFETIME, 86400); | |
13 | $session_name = (!defined('TTRSS_SESSION_NAME')) ? "ttrss_sid" : TTRSS_SESSION_NAME; | |
14 | ||
15 | if (@$_SERVER['HTTPS'] == "on") { | |
16 | $session_name .= "_ssl"; | |
17 | ini_set("session.cookie_secure", true); | |
18 | } | |
19 | ||
20 | ini_set("session.gc_probability", 75); | |
21 | ini_set("session.name", $session_name); | |
22 | ini_set("session.use_only_cookies", true); | |
23 | ini_set("session.gc_maxlifetime", $session_expire); | |
24 | ini_set("session.cookie_lifetime", min(0, SESSION_COOKIE_LIFETIME)); | |
25 | ||
26 | function session_get_schema_version($nocache = false) { | |
27 | global $schema_version; | |
28 | ||
29 | if (!$schema_version) { | |
30 | $result = Db::get()->query("SELECT schema_version FROM ttrss_version"); | |
31 | $version = Db::get()->fetch_result($result, 0, "schema_version"); | |
32 | $schema_version = $version; | |
33 | return $version; | |
34 | } else { | |
35 | return $schema_version; | |
36 | } | |
37 | } | |
38 | ||
39 | function validate_session() { | |
40 | if (SINGLE_USER_MODE) return true; | |
41 | ||
42 | if (VERSION_STATIC != $_SESSION["version"]) return false; | |
43 | ||
44 | $check_ip = $_SESSION['ip_address']; | |
45 | ||
46 | switch (SESSION_CHECK_ADDRESS) { | |
47 | case 0: | |
48 | $check_ip = ''; | |
49 | break; | |
50 | case 1: | |
51 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1); | |
52 | break; | |
53 | case 2: | |
54 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')); | |
55 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1); | |
56 | break; | |
57 | }; | |
58 | ||
59 | if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) { | |
60 | $_SESSION["login_error_msg"] = | |
61 | __("Session failed to validate (incorrect IP)"); | |
62 | return false; | |
63 | } | |
64 | ||
65 | if ($_SESSION["ref_schema_version"] != session_get_schema_version(true)) { | |
66 | $_SESSION["login_error_msg"] = | |
67 | __("Session failed to validate (schema version changed)"); | |
68 | return false; | |
69 | } | |
70 | ||
71 | if (sha1($_SERVER['HTTP_USER_AGENT']) != $_SESSION["user_agent"]) { | |
72 | $_SESSION["login_error_msg"] = | |
73 | __("Session failed to validate (user agent changed)"); | |
74 | return false; | |
75 | } | |
76 | ||
77 | if ($_SESSION["uid"]) { | |
78 | $result = Db::get()->query( | |
79 | "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'"); | |
80 | ||
81 | // user not found | |
82 | if (Db::get()->num_rows($result) == 0) { | |
83 | ||
84 | $_SESSION["login_error_msg"] = | |
85 | __("Session failed to validate (user not found)"); | |
86 | ||
87 | return false; | |
88 | } else { | |
89 | $pwd_hash = Db::get()->fetch_result($result, 0, "pwd_hash"); | |
90 | ||
91 | if ($pwd_hash != $_SESSION["pwd_hash"]) { | |
92 | ||
93 | $_SESSION["login_error_msg"] = | |
94 | __("Session failed to validate (password changed)"); | |
95 | ||
96 | return false; | |
97 | } | |
98 | } | |
99 | } | |
100 | ||
101 | return true; | |
102 | } | |
103 | ||
104 | ||
105 | function ttrss_open ($s, $n) { | |
106 | return true; | |
107 | } | |
108 | ||
109 | function ttrss_read ($id){ | |
110 | global $session_expire; | |
111 | ||
112 | $res = Db::get()->query("SELECT data FROM ttrss_sessions WHERE id='$id'"); | |
113 | ||
114 | if (Db::get()->num_rows($res) != 1) { | |
115 | ||
116 | $expire = time() + $session_expire; | |
117 | ||
118 | Db::get()->query("INSERT INTO ttrss_sessions (id, data, expire) | |
119 | VALUES ('$id', '', '$expire')"); | |
120 | ||
121 | return ""; | |
122 | } else { | |
123 | return base64_decode(Db::get()->fetch_result($res, 0, "data")); | |
124 | } | |
125 | ||
126 | } | |
127 | ||
128 | function ttrss_write ($id, $data) { | |
129 | global $session_expire; | |
130 | ||
131 | $data = base64_encode($data); | |
132 | $expire = time() + $session_expire; | |
133 | ||
134 | Db::get()->query("UPDATE ttrss_sessions SET data='$data', expire='$expire' WHERE id='$id'"); | |
135 | ||
136 | return true; | |
137 | } | |
138 | ||
139 | function ttrss_close () { | |
140 | return true; | |
141 | } | |
142 | ||
143 | function ttrss_destroy($id) { | |
144 | Db::get()->query("DELETE FROM ttrss_sessions WHERE id = '$id'"); | |
145 | ||
146 | return true; | |
147 | } | |
148 | ||
149 | function ttrss_gc ($expire) { | |
150 | Db::get()->query("DELETE FROM ttrss_sessions WHERE expire < " . time()); | |
151 | } | |
152 | ||
153 | if (!SINGLE_USER_MODE /* && DB_TYPE == "pgsql" */) { | |
154 | session_set_save_handler("ttrss_open", | |
155 | "ttrss_close", "ttrss_read", "ttrss_write", | |
156 | "ttrss_destroy", "ttrss_gc"); | |
157 | register_shutdown_function('session_write_close'); | |
158 | } | |
159 | ||
160 | if (!defined('NO_SESSION_AUTOSTART')) { | |
161 | if (isset($_COOKIE[session_name()])) { | |
162 | @session_start(); | |
163 | } | |
164 | } | |
165 | ?> |