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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 | require_once "errorhandler.php"; | |
7 | require_once "lib/accept-to-gettext.php"; | |
8 | require_once "lib/gettext/gettext.inc"; | |
9 | require_once "version.php"; | |
10 | ||
11 | $session_expire = max(SESSION_COOKIE_LIFETIME, 86400); | |
12 | $session_name = (!defined('TTRSS_SESSION_NAME')) ? "ttrss_sid" : TTRSS_SESSION_NAME; | |
13 | ||
14 | if (@$_SERVER['HTTPS'] == "on") { | |
15 | $session_name .= "_ssl"; | |
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 | global $session_connection; | |
26 | ||
27 | function session_get_schema_version($link, $nocache = false) { | |
28 | global $schema_version; | |
29 | ||
30 | if (!$schema_version) { | |
31 | $result = db_query($link, "SELECT schema_version FROM ttrss_version"); | |
32 | $version = db_fetch_result($result, 0, "schema_version"); | |
33 | $schema_version = $version; | |
34 | return $version; | |
35 | } else { | |
36 | return $schema_version; | |
37 | } | |
38 | } | |
39 | ||
40 | function validate_session($link) { | |
41 | if (SINGLE_USER_MODE) return true; | |
42 | if (!$link) return false; | |
43 | ||
44 | if (VERSION != $_SESSION["version"]) return false; | |
45 | ||
46 | $check_ip = $_SESSION['ip_address']; | |
47 | ||
48 | switch (SESSION_CHECK_ADDRESS) { | |
49 | case 0: | |
50 | $check_ip = ''; | |
51 | break; | |
52 | case 1: | |
53 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1); | |
54 | break; | |
55 | case 2: | |
56 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')); | |
57 | $check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1); | |
58 | break; | |
59 | }; | |
60 | ||
61 | if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) { | |
62 | $_SESSION["login_error_msg"] = | |
63 | __("Session failed to validate (incorrect IP)"); | |
64 | return false; | |
65 | } | |
66 | ||
67 | if ($_SESSION["ref_schema_version"] != session_get_schema_version($link, true)) | |
68 | return false; | |
69 | ||
70 | if (sha1($_SERVER['HTTP_USER_AGENT']) != $_SESSION["user_agent"]) | |
71 | return false; | |
72 | ||
73 | if ($_SESSION["uid"]) { | |
74 | $result = db_query($link, | |
75 | "SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'"); | |
76 | ||
77 | // user not found | |
78 | if (db_num_rows($result) == 0) { | |
79 | return false; | |
80 | } else { | |
81 | $pwd_hash = db_fetch_result($result, 0, "pwd_hash"); | |
82 | ||
83 | if ($pwd_hash != $_SESSION["pwd_hash"]) { | |
84 | return false; | |
85 | } | |
86 | } | |
87 | } | |
88 | ||
89 | /* if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) { | |
90 | ||
91 | //print_r($_SESSION); | |
92 | ||
93 | if (time() > $_SESSION["cookie_lifetime"]) { | |
94 | return false; | |
95 | } | |
96 | } */ | |
97 | ||
98 | return true; | |
99 | } | |
100 | ||
101 | ||
102 | function ttrss_open ($s, $n) { | |
103 | global $session_connection; | |
104 | ||
105 | $session_connection = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); | |
106 | ||
107 | return true; | |
108 | } | |
109 | ||
110 | function ttrss_read ($id){ | |
111 | ||
112 | global $session_connection,$session_read; | |
113 | ||
114 | $query = "SELECT data FROM ttrss_sessions WHERE id='$id'"; | |
115 | ||
116 | $res = db_query($session_connection, $query); | |
117 | ||
118 | if (db_num_rows($res) != 1) { | |
119 | return ""; | |
120 | } else { | |
121 | $session_read = db_fetch_assoc($res); | |
122 | $session_read["data"] = base64_decode($session_read["data"]); | |
123 | return $session_read["data"]; | |
124 | } | |
125 | } | |
126 | ||
127 | function ttrss_write ($id, $data) { | |
128 | ||
129 | if (! $data) { | |
130 | return false; | |
131 | } | |
132 | ||
133 | global $session_connection, $session_read, $session_expire; | |
134 | ||
135 | $expire = time() + $session_expire; | |
136 | ||
137 | $data = db_escape_string($session_connection, base64_encode($data), false); | |
138 | ||
139 | if ($session_read) { | |
140 | $query = "UPDATE ttrss_sessions SET data='$data', | |
141 | expire='$expire' WHERE id='$id'"; | |
142 | } else { | |
143 | $query = "INSERT INTO ttrss_sessions (id, data, expire) | |
144 | VALUES ('$id', '$data', '$expire')"; | |
145 | } | |
146 | ||
147 | db_query($session_connection, $query); | |
148 | return true; | |
149 | } | |
150 | ||
151 | function ttrss_close () { | |
152 | ||
153 | global $session_connection; | |
154 | ||
155 | //db_close($session_connection); | |
156 | ||
157 | return true; | |
158 | } | |
159 | ||
160 | function ttrss_destroy ($id) { | |
161 | ||
162 | global $session_connection; | |
163 | ||
164 | $query = "DELETE FROM ttrss_sessions WHERE id = '$id'"; | |
165 | ||
166 | db_query($session_connection, $query); | |
167 | ||
168 | return true; | |
169 | } | |
170 | ||
171 | function ttrss_gc ($expire) { | |
172 | ||
173 | global $session_connection; | |
174 | ||
175 | $query = "DELETE FROM ttrss_sessions WHERE expire < " . time(); | |
176 | ||
177 | db_query($session_connection, $query); | |
178 | } | |
179 | ||
180 | if (!SINGLE_USER_MODE /* && DB_TYPE == "pgsql" */) { | |
181 | session_set_save_handler("ttrss_open", | |
182 | "ttrss_close", "ttrss_read", "ttrss_write", | |
183 | "ttrss_destroy", "ttrss_gc"); | |
184 | } | |
185 | ||
186 | if (!defined('NO_SESSION_AUTOSTART')) { | |
187 | if (isset($_COOKIE[session_name()])) { | |
188 | @session_start(); | |
189 | } | |
190 | } | |
191 | ?> |