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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 "db.php"; | |
6 | ||
7 | $session_expire = max(SESSION_COOKIE_LIFETIME, 86400); | |
8 | $session_name = (!defined('TTRSS_SESSION_NAME')) ? "ttrss_sid" : TTRSS_SESSION_NAME; | |
9 | ||
10 | if (@$_SERVER['HTTPS'] == "on") { | |
11 | $session_name .= "_ssl"; | |
12 | ini_set("session.cookie_secure", true); | |
13 | } | |
14 | ||
15 | ini_set("session.gc_probability", 50); | |
16 | ini_set("session.name", $session_name); | |
17 | ini_set("session.use_only_cookies", true); | |
18 | ini_set("session.gc_maxlifetime", $session_expire); | |
19 | ||
20 | function session_get_schema_version($link, $nocache = false) { | |
21 | global $schema_version; | |
22 | ||
23 | if (!$schema_version) { | |
24 | $result = db_query($link, "SELECT schema_version FROM ttrss_version"); | |
25 | $version = db_fetch_result($result, 0, "schema_version"); | |
26 | $schema_version = $version; | |
27 | return $version; | |
28 | } else { | |
29 | return $schema_version; | |
30 | } | |
31 | } | |
32 | ||
33 | function validate_session($link) { | |
34 | if (SINGLE_USER_MODE) return true; | |
35 | ||
36 | $check_ip = $_SESSION['ip_address']; | |
37 | ||
38 | switch (SESSION_CHECK_ADDRESS) { | |
39 | case 0: | |
40 | $check_ip = ''; | |
41 | break; | |
42 | case 1: | |
43 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1); | |
44 | break; | |
45 | case 2: | |
46 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')); | |
47 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1); | |
48 | break; | |
49 | }; | |
50 | ||
51 | if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) { | |
52 | $_SESSION["login_error_msg"] = | |
53 | __("Session failed to validate (incorrect IP)"); | |
54 | return false; | |
55 | } | |
56 | ||
57 | if ($_SESSION["ref_schema_version"] != session_get_schema_version($link, true)) | |
58 | return false; | |
59 | ||
60 | if ($_SESSION["uid"]) { | |
61 | $result = db_query($link, | |
62 | "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'"); | |
63 | ||
64 | // user not found | |
65 | if (db_num_rows($result) == 0) { | |
66 | return false; | |
67 | } else { | |
68 | $pwd_hash = db_fetch_result($result, 0, "pwd_hash"); | |
69 | ||
70 | if ($pwd_hash != $_SESSION["pwd_hash"]) { | |
71 | return false; | |
72 | } | |
73 | } | |
74 | } | |
75 | ||
76 | /* if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) { | |
77 | ||
78 | //print_r($_SESSION); | |
79 | ||
80 | if (time() > $_SESSION["cookie_lifetime"]) { | |
81 | return false; | |
82 | } | |
83 | } */ | |
84 | ||
85 | return true; | |
86 | } | |
87 | ||
88 | ||
89 | function ttrss_open ($s, $n) { | |
90 | ||
91 | global $session_connection; | |
92 | ||
93 | $session_connection = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); | |
94 | ||
95 | return true; | |
96 | } | |
97 | ||
98 | function ttrss_read ($id){ | |
99 | ||
100 | global $session_connection,$session_read; | |
101 | ||
102 | $query = "SELECT data FROM ttrss_sessions WHERE id='$id'"; | |
103 | ||
104 | $res = db_query($session_connection, $query); | |
105 | ||
106 | if (db_num_rows($res) != 1) { | |
107 | return ""; | |
108 | } else { | |
109 | $session_read = db_fetch_assoc($res); | |
110 | $session_read["data"] = base64_decode($session_read["data"]); | |
111 | return $session_read["data"]; | |
112 | } | |
113 | } | |
114 | ||
115 | function ttrss_write ($id, $data) { | |
116 | ||
117 | if (! $data) { | |
118 | return false; | |
119 | } | |
120 | ||
121 | global $session_connection, $session_read, $session_expire; | |
122 | ||
123 | $expire = time() + $session_expire; | |
124 | ||
125 | $data = db_escape_string($session_connection, base64_encode($data), false); | |
126 | ||
127 | if ($session_read) { | |
128 | $query = "UPDATE ttrss_sessions SET data='$data', | |
129 | expire='$expire' WHERE id='$id'"; | |
130 | } else { | |
131 | $query = "INSERT INTO ttrss_sessions (id, data, expire) | |
132 | VALUES ('$id', '$data', '$expire')"; | |
133 | } | |
134 | ||
135 | db_query($session_connection, $query); | |
136 | return true; | |
137 | } | |
138 | ||
139 | function ttrss_close () { | |
140 | ||
141 | global $session_connection; | |
142 | ||
143 | //db_close($session_connection); | |
144 | ||
145 | return true; | |
146 | } | |
147 | ||
148 | function ttrss_destroy ($id) { | |
149 | ||
150 | global $session_connection; | |
151 | ||
152 | $query = "DELETE FROM ttrss_sessions WHERE id = '$id'"; | |
153 | ||
154 | db_query($session_connection, $query); | |
155 | ||
156 | return true; | |
157 | } | |
158 | ||
159 | function ttrss_gc ($expire) { | |
160 | ||
161 | global $session_connection; | |
162 | ||
163 | $query = "DELETE FROM ttrss_sessions WHERE expire < " . time(); | |
164 | ||
165 | db_query($session_connection, $query); | |
166 | } | |
167 | ||
168 | if (!SINGLE_USER_MODE /* && DB_TYPE == "pgsql" */) { | |
169 | session_set_save_handler("ttrss_open", | |
170 | "ttrss_close", "ttrss_read", "ttrss_write", | |
171 | "ttrss_destroy", "ttrss_gc"); | |
172 | } | |
173 | ||
174 | if (!defined('TTRSS_SESSION_NAME') || TTRSS_SESSION_NAME != 'ttrss_api_sid') { | |
175 | if (isset($_COOKIE[$session_name])) { | |
176 | @session_start(); | |
177 | ||
178 | if (!isset($_SESSION["uid"]) || !$_SESSION["uid"] || !validate_session($session_connection)) { | |
179 | session_destroy(); | |
180 | setcookie(session_name(), '', time()-42000, '/'); | |
181 | } | |
182 | } | |
183 | } | |
184 | ?> |