classes/db/prefs.php

   1 <?php
   2 class Db_Prefs {
   3         private $dbh;
   4         private static $instance;
   5         private $cache;
   6
   7         function __construct() {
   8                 $this->dbh = Db::get();
   9                 $this->cache = array();
  10
  11                 if ($_SESSION["uid"]) $this->cache();
  12         }
  13
  14         private function __clone() {
  15                 //
  16         }
  17
  18         public static function get() {
  19                 if (self::$instance == null)
  20                         self::$instance = new self();
  21
  22                 return self::$instance;
  23         }
  24
  25         function cache() {
  26                 $user_id = $_SESSION["uid"];
  27                 @$profile = $_SESSION["profile"];
  28
  29                 if ($profile) {
  30                         $profile_qpart = "profile = '$profile' AND";
  31                 } else {
  32                         $profile_qpart = "profile IS NULL AND";
  33                 }
  34
  35                 if (get_schema_version() < 63) $profile_qpart = "";
  36
  37                 $result = db_query("SELECT
  38                         value,ttrss_prefs_types.type_name as type_name,ttrss_prefs.pref_name AS pref_name
  39                         FROM
  40                                 ttrss_user_prefs,ttrss_prefs,ttrss_prefs_types
  41                         WHERE
  42                                 $profile_qpart
  43                                 ttrss_prefs.pref_name NOT LIKE '_MOBILE%' AND
  44                                 ttrss_prefs_types.id = type_id AND
  45                                 owner_uid = '$user_id' AND
  46                                 ttrss_user_prefs.pref_name = ttrss_prefs.pref_name");
  47
  48                 while ($line = db_fetch_assoc($result)) {
  49                         if ($user_id == $_SESSION["uid"]) {
  50                                 $pref_name = $line["pref_name"];
  51
  52                                 $this->cache[$pref_name]["type"] = $line["type_name"];
  53                                 $this->cache[$pref_name]["value"] = $line["value"];
  54                         }
  55                 }
  56         }
  57
  58         function read($pref_name, $user_id = false, $die_on_error = false) {
  59
  60                 $pref_name = db_escape_string($pref_name);
  61                 $profile = false;
  62
  63                 if (!$user_id) {
  64                         $user_id = $_SESSION["uid"];
  65                         @$profile = $_SESSION["profile"];
  66                 } else {
  67                         $user_id = sprintf("%d", $user_id);
  68                 }
  69
  70                 if (isset($this->cache[$pref_name])) {
  71                         $tuple = $this->cache[$pref_name];
  72                         return $this->convert($tuple["value"], $tuple["type"]);
  73                 }
  74
  75                 if ($profile) {
  76                         $profile_qpart = "profile = '$profile' AND";
  77                 } else {
  78                         $profile_qpart = "profile IS NULL AND";
  79                 }
  80
  81                 if (get_schema_version() < 63) $profile_qpart = "";
  82
  83                 $result = db_query("SELECT
  84                         value,ttrss_prefs_types.type_name as type_name
  85                         FROM
  86                                 ttrss_user_prefs,ttrss_prefs,ttrss_prefs_types
  87                         WHERE
  88                                 $profile_qpart
  89                                 ttrss_user_prefs.pref_name = '$pref_name' AND
  90                                 ttrss_prefs_types.id = type_id AND
  91                                 owner_uid = '$user_id' AND
  92                                 ttrss_user_prefs.pref_name = ttrss_prefs.pref_name");
  93
  94                 if (db_num_rows($result) > 0) {
  95                         $value = db_fetch_result($result, 0, "value");
  96                         $type_name = db_fetch_result($result, 0, "type_name");
  97
  98                         if ($user_id == $_SESSION["uid"]) {
  99                                 $this->cache[$pref_name]["type"] = $type_name;
 100                                 $this->cache[$pref_name]["value"] = $value;
 101                         }
 102
 103                         return $this->convert($value, $type_name);
 104
 105                 } else {
 106                         user_error("Fatal error, unknown preferences key: $pref_name (owner: $user_id)", $die_on_error ? E_USER_ERROR : E_USER_WARNING);
 107                         return null;
 108                 }
 109         }
 110
 111         function convert($value, $type_name) {
 112                 if ($type_name == "bool") {
 113                         return $value == "true";
 114                 } else if ($type_name == "integer") {
 115                         return (int)$value;
 116                 } else {
 117                         return $value;
 118                 }
 119         }
 120
 121         function write($pref_name, $value, $user_id = false, $strip_tags = true) {
 122                 $pref_name = db_escape_string($pref_name);
 123                 $value = db_escape_string($value, $strip_tags);
 124
 125                 if (!$user_id) {
 126                         $user_id = $_SESSION["uid"];
 127                         @$profile = $_SESSION["profile"];
 128                 } else {
 129                         $user_id = sprintf("%d", $user_id);
 130                 }
 131
 132                 if ($profile) {
 133                         $profile_qpart = "AND profile = '$profile'";
 134                 } else {
 135                         $profile_qpart = "AND profile IS NULL";
 136                 }
 137
 138                 if (get_schema_version() < 63) $profile_qpart = "";
 139
 140                 $type_name = "";
 141                 $current_value = "";
 142
 143                 if (isset($this->cache[$pref_name])) {
 144                         $type_name = $this->cache[$pref_name]["type"];
 145                         $current_value = $this->cache[$pref_name]["value"];
 146                 }
 147
 148                 if (!$type_name) {
 149                         $result = db_query("SELECT type_name
 150                                 FROM ttrss_prefs,ttrss_prefs_types
 151                                 WHERE pref_name = '$pref_name' AND type_id = ttrss_prefs_types.id");
 152
 153                         if (db_num_rows($result) > 0)
 154                                 $type_name = db_fetch_result($result, 0, "type_name");
 155                 } else if ($current_value == $value) {
 156                         return;
 157                 }
 158
 159                 if ($type_name) {
 160                         if ($type_name == "bool") {
 161                                 if ($value == "1" || $value == "true") {
 162                                         $value = "true";
 163                                 } else {
 164                                         $value = "false";
 165                                 }
 166                         } else if ($type_name == "integer") {
 167                                 $value = sprintf("%d", $value);
 168                         }
 169
 170                         if ($pref_name == 'USER_TIMEZONE' && $value == '') {
 171                                 $value = 'UTC';
 172                         }
 173
 174                         db_query("UPDATE ttrss_user_prefs SET
 175                                 value = '$value' WHERE pref_name = '$pref_name'
 176                                         $profile_qpart
 177                                         AND owner_uid = " . $_SESSION["uid"]);
 178
 179                         if ($user_id == $_SESSION["uid"]) {
 180                                 $this->cache[$pref_name]["type"] = $type_name;
 181                                 $this->cache[$pref_name]["value"] = $value;
 182                         }
 183                 }
 184         }
 185
 186 }