include/dba.php

   1 <?php
   2 require_once("dbm.php");
   3
   4 # if PDO is avaible for mysql, use the new database abstraction
   5 # TODO: PDO is disabled for release 3.3. We need to investigate why
   6 # the update from 3.2 fails with pdo
   7 /*
   8 if(class_exists('\PDO') && in_array('mysql', PDO::getAvailableDrivers())) {
   9   require_once("library/dddbl2/dddbl.php");
  10   require_once("include/dba_pdo.php");
  11 }
  12 */
  13
  14
  15 require_once('include/datetime.php');
  16
  17 /**
  18  * @class MySQL database class
  19  *
  20  * For debugging, insert 'dbg(1);' anywhere in the program flow.
  21  * dbg(0); will turn it off. Logging is performed at LOGGER_DATA level.
  22  * When logging, all binary info is converted to text and html entities are escaped so that
  23  * the debugging stream is safe to view within both terminals and web pages.
  24  *
  25  */
  26
  27 if(! class_exists('dba')) {
  28 class dba {
  29
  30         private $debug = 0;
  31         private $db;
  32         private $result;
  33         public  $mysqli = true;
  34         public  $connected = false;
  35         public  $error = false;
  36
  37         function __construct($server,$user,$pass,$db,$install = false) {
  38                 global $a;
  39
  40                 $stamp1 = microtime(true);
  41
  42                 $server = trim($server);
  43                 $user = trim($user);
  44                 $pass = trim($pass);
  45                 $db = trim($db);
  46
  47                 if (!(strlen($server) && strlen($user))){
  48                         $this->connected = false;
  49                         $this->db = null;
  50                         return;
  51                 }
  52
  53                 if($install) {
  54                         if(strlen($server) && ($server !== 'localhost') && ($server !== '127.0.0.1')) {
  55                                 if(! dns_get_record($server, DNS_A + DNS_CNAME + DNS_PTR)) {
  56                                         $this->error = sprintf( t('Cannot locate DNS info for database server \'%s\''), $server);
  57                                         $this->connected = false;
  58                                         $this->db = null;
  59                                         return;
  60                                 }
  61                         }
  62                 }
  63
  64                 if(class_exists('mysqli')) {
  65                         $this->db = @new mysqli($server,$user,$pass,$db);
  66                         if(! mysqli_connect_errno()) {
  67                                 $this->connected = true;
  68                         }
  69                         if (isset($a->config["system"]["db_charset"]))
  70                                 $this->db->set_charset($a->config["system"]["db_charset"]);
  71                 }
  72                 else {
  73                         $this->mysqli = false;
  74                         $this->db = mysql_connect($server,$user,$pass);
  75                         if($this->db && mysql_select_db($db,$this->db)) {
  76                                 $this->connected = true;
  77                         }
  78                         if (isset($a->config["system"]["db_charset"]))
  79                                 mysql_set_charset($a->config["system"]["db_charset"], $this->db);
  80                 }
  81                 if(! $this->connected) {
  82                         $this->db = null;
  83                         if(! $install)
  84                                 system_unavailable();
  85                 }
  86
  87                 $a->save_timestamp($stamp1, "network");
  88         }
  89
  90         public function getdb() {
  91                 return $this->db;
  92         }
  93
  94         public function q($sql, $onlyquery = false) {
  95                 global $a;
  96
  97                 if((! $this->db) || (! $this->connected))
  98                         return false;
  99
 100                 $this->error = '';
 101
 102                 // Check the connection (This can reconnect the connection - if configured)
 103                 if ($this->mysqli)
 104                         $connected = $this->db->ping();
 105                 else
 106                         $connected = mysql_ping($this->db);
 107
 108                 $connstr = ($connected ? "Connected": "Disonnected");
 109
 110                 $stamp1 = microtime(true);
 111
 112                 if($this->mysqli)
 113                         $result = @$this->db->query($sql);
 114                 else
 115                         $result = @mysql_query($sql,$this->db);
 116
 117                 $stamp2 = microtime(true);
 118                 $duration = (float)($stamp2-$stamp1);
 119
 120                 $a->save_timestamp($stamp1, "database");
 121
 122                 if (strtolower(substr($sql, 0, 6)) != "select")
 123                         $a->save_timestamp($stamp1, "database_write");
 124
 125                 if(x($a->config,'system') && x($a->config['system'],'db_log')) {
 126                         if (($duration > $a->config["system"]["db_loglimit"])) {
 127                                 $duration = round($duration, 3);
 128                                 $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
 129                                 @file_put_contents($a->config["system"]["db_log"], datetime_convert()."\t".$duration."\t".
 130                                                 basename($backtrace[1]["file"])."\t".
 131                                                 $backtrace[1]["line"]."\t".$backtrace[2]["function"]."\t".
 132                                                 substr($sql, 0, 2000)."\n", FILE_APPEND);
 133                         }
 134                 }
 135
 136                 if($this->mysqli) {
 137                         if($this->db->errno) {
 138                                 $this->error = $this->db->error;
 139                                 $this->errorno = $this->db->errno;
 140                         }
 141                 } elseif(mysql_errno($this->db)) {
 142                         $this->error = mysql_error($this->db);
 143                         $this->errorno = mysql_errno($this->db);
 144                 }
 145
 146                 if(strlen($this->error)) {
 147                         logger('DB Error ('.$connstr.') '.$this->errorno.': '.$this->error);
 148                 }
 149
 150                 if($this->debug) {
 151
 152                         $mesg = '';
 153
 154                         if($result === false)
 155                                 $mesg = 'false';
 156                         elseif($result === true)
 157                                 $mesg = 'true';
 158                         else {
 159                                 if($this->mysqli)
 160                                         $mesg = $result->num_rows . ' results' . EOL;
 161                         else
 162                                         $mesg = mysql_num_rows($result) . ' results' . EOL;
 163                         }
 164
 165                         $str =  'SQL = ' . printable($sql) . EOL . 'SQL returned ' . $mesg
 166                                 . (($this->error) ? ' error: ' . $this->error : '')
 167                                 . EOL;
 168
 169                         logger('dba: ' . $str );
 170                 }
 171
 172                 /**
 173                  * If dbfail.out exists, we will write any failed calls directly to it,
 174                  * regardless of any logging that may or may nor be in effect.
 175                  * These usually indicate SQL syntax errors that need to be resolved.
 176                  */
 177
 178                 if($result === false) {
 179                         logger('dba: ' . printable($sql) . ' returned false.' . "\n" . $this->error);
 180                         if(file_exists('dbfail.out'))
 181                                 file_put_contents('dbfail.out', datetime_convert() . "\n" . printable($sql) . ' returned false' . "\n" . $this->error . "\n", FILE_APPEND);
 182                 }
 183
 184                 if(($result === true) || ($result === false))
 185                         return $result;
 186
 187                 if ($onlyquery) {
 188                         $this->result = $result;
 189                         return true;
 190                 }
 191
 192                 $r = array();
 193                 if($this->mysqli) {
 194                         if($result->num_rows) {
 195                                 while($x = $result->fetch_array(MYSQLI_ASSOC))
 196                                         $r[] = $x;
 197                                 $result->free_result();
 198                         }
 199                 }
 200                 else {
 201                         if(mysql_num_rows($result)) {
 202                                 while($x = mysql_fetch_array($result, MYSQL_ASSOC))
 203                                         $r[] = $x;
 204                                 mysql_free_result($result);
 205                         }
 206                 }
 207
 208                 //$a->save_timestamp($stamp1, "database");
 209
 210                 if($this->debug)
 211                         logger('dba: ' . printable(print_r($r, true)));
 212                 return($r);
 213         }
 214
 215         public function qfetch() {
 216                 $x = false;
 217
 218                 if ($this->result)
 219                         if($this->mysqli) {
 220                                 if($this->result->num_rows)
 221                                         $x = $this->result->fetch_array(MYSQLI_ASSOC);
 222                         } else {
 223                                 if(mysql_num_rows($this->result))
 224                                         $x = mysql_fetch_array($this->result, MYSQL_ASSOC);
 225                         }
 226
 227                 return($x);
 228         }
 229
 230         public function qclose() {
 231                 if ($this->result)
 232                         if($this->mysqli) {
 233                                 $this->result->free_result();
 234                         } else {
 235                                 mysql_free_result($this->result);
 236                         }
 237         }
 238
 239         public function dbg($dbg) {
 240                 $this->debug = $dbg;
 241         }
 242
 243         public function escape($str) {
 244                 if($this->db && $this->connected) {
 245                         if($this->mysqli)
 246                                 return @$this->db->real_escape_string($str);
 247                         else
 248                                 return @mysql_real_escape_string($str,$this->db);
 249                 }
 250         }
 251
 252         function __destruct() {
 253                 if ($this->db)
 254                         if($this->mysqli)
 255                                 $this->db->close();
 256                         else
 257                                 mysql_close($this->db);
 258         }
 259 }}
 260
 261 if(! function_exists('printable')) {
 262 function printable($s) {
 263         $s = preg_replace("~([\x01-\x08\x0E-\x0F\x10-\x1F\x7F-\xFF])~",".", $s);
 264         $s = str_replace("\x00",'.',$s);
 265         if(x($_SERVER,'SERVER_NAME'))
 266                 $s = escape_tags($s);
 267         return $s;
 268 }}
 269
 270 // Procedural functions
 271 if(! function_exists('dbg')) {
 272 function dbg($state) {
 273         global $db;
 274         if($db)
 275         $db->dbg($state);
 276 }}
 277
 278 if(! function_exists('dbesc')) {
 279 function dbesc($str) {
 280         global $db;
 281         if($db && $db->connected)
 282                 return($db->escape($str));
 283         else
 284                 return(str_replace("'","\\'",$str));
 285 }}
 286
 287
 288
 289 // Function: q($sql,$args);
 290 // Description: execute SQL query with printf style args.
 291 // Example: $r = q("SELECT * FROM `%s` WHERE `uid` = %d",
 292 //                   'user', 1);
 293
 294 if(! function_exists('q')) {
 295 function q($sql) {
 296
 297         global $db;
 298         $args = func_get_args();
 299         unset($args[0]);
 300
 301         if($db && $db->connected) {
 302                 $stmt = @vsprintf($sql,$args); // Disabled warnings
 303                 //logger("dba: q: $stmt", LOGGER_ALL);
 304                 if($stmt === false)
 305                         logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG);
 306                 return $db->q($stmt);
 307         }
 308
 309         /**
 310          *
 311          * This will happen occasionally trying to store the
 312          * session data after abnormal program termination
 313          *
 314          */
 315         logger('dba: no database: ' . print_r($args,true));
 316         return false;
 317
 318 }}
 319
 320 /**
 321  *
 322  * Raw db query, no arguments
 323  *
 324  */
 325
 326 if(! function_exists('dbq')) {
 327 function dbq($sql) {
 328
 329         global $db;
 330         if($db && $db->connected)
 331                 $ret = $db->q($sql);
 332         else
 333                 $ret = false;
 334         return $ret;
 335 }}
 336
 337
 338 // Caller is responsible for ensuring that any integer arguments to
 339 // dbesc_array are actually integers and not malformed strings containing
 340 // SQL injection vectors. All integer array elements should be specifically
 341 // cast to int to avoid trouble.
 342
 343
 344 if(! function_exists('dbesc_array_cb')) {
 345 function dbesc_array_cb(&$item, $key) {
 346         if(is_string($item))
 347                 $item = dbesc($item);
 348 }}
 349
 350
 351 if(! function_exists('dbesc_array')) {
 352 function dbesc_array(&$arr) {
 353         if(is_array($arr) && count($arr)) {
 354                 array_walk($arr,'dbesc_array_cb');
 355         }
 356 }}
 357
 358
 359 function dba_timer() {
 360         return microtime(true);
 361 }