diff options
Diffstat (limited to 'include/dba/dba_postgres.php')
| -rw-r--r-- | include/dba/dba_postgres.php | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/include/dba/dba_postgres.php b/include/dba/dba_postgres.php new file mode 100644 index 000000000..a390292a5 --- /dev/null +++ b/include/dba/dba_postgres.php @@ -0,0 +1,112 @@ +<?php + +require_once('include/dba/dba_driver.php'); + + +class dba_postgres extends dba_driver { + const INSTALL_SCRIPT='install/schema_postgres.sql'; + const NULL_DATE = '0001-01-01 00:00:00'; + const UTC_NOW = "now() at time zone 'UTC'"; + + function connect($server,$port,$user,$pass,$db) { + if(!$port) $port = 5432; + $connstr = 'host=' . $server . ' port='.$port . ' user=' . $user . ' password=' . $pass . ' dbname='. $db; + $this->db = pg_connect($connstr); + if($this->db !== false) { + $this->connected = true; + } else { + $this->connected = false; + } + $this->q("SET standard_conforming_strings = 'off'; SET backslash_quote = 'on';"); // emulate mysql string escaping to prevent massive code-clobber + return $this->connected; + } + + function q($sql) { + if((! $this->db) || (! $this->connected)) + return false; + + if(!strpos($sql, ';')) + $sql .= ';'; + + if(strpos($sql, '`')) // this is a hack. quoted identifiers should be replaced everywhere in the code with dbesc_identifier(), remove this once it is + $sql = str_replace('`', '"', $sql); + + $this->error = ''; + $result = @pg_query($this->db, $sql); + if(file_exists('db-allqueries.out')) { + $bt = debug_backtrace(); + $trace = array(); + foreach($bt as $frame) { + if(!empty($frame['file']) && @strstr($frame['file'], $_SERVER['DOCUMENT_ROOT'])) + $frame['file'] = substr($frame['file'], strlen($_SERVER['DOCUMENT_ROOT'])+1); + + $trace[] = $frame['file'] . ':' . $frame['function'] . '():' . $frame['line'] ; + } + $compact = join(', ', $trace); + file_put_contents('db-allqueries.out', datetime_convert() . ": " . $sql . ' is_resource: '.var_export(is_resource($result), true).', backtrace: '.$compact."\n\n", FILE_APPEND); + } + + if($result === false) + $this->error = pg_last_error($this->db); + + if($result === false || $this->error) { + //logger('dba_postgres: ' . printable($sql) . ' returned false.' . "\n" . $this->error); + if(file_exists('dbfail.out')) + file_put_contents('dbfail.out', datetime_convert() . "\n" . printable($sql) . ' returned false' . "\n" . $this->error . "\n", FILE_APPEND); + } + + if(($result === true) || ($result === false)) + return $result; + + if(pg_result_status($result) == PGSQL_COMMAND_OK) + return true; + + $r = array(); + if(pg_num_rows($result)) { + while($x = pg_fetch_array($result, null, PGSQL_ASSOC)) + $r[] = $x; + pg_free_result($result); + if($this->debug) + logger('dba_postgres: ' . printable(print_r($r,true))); + } + return $r; + } + + function escape($str) { + if($this->db && $this->connected) { + $x = @pg_escape_string($this->db, $str); + return $x; + } + } + + function escapebin($str) { + return pg_escape_bytea($str); + } + + function unescapebin($str) { + return pg_unescape_bytea($str); + } + + function close() { + if($this->db) + pg_close($this->db); + $this->connected = false; + } + + function quote_interval($txt) { + return "'$txt'"; + } + + function escape_identifier($str) { + return pg_escape_identifier($this->db, $str); + } + + function optimize_table($table) { + // perhaps do some equivalent thing here, vacuum, etc? I think this is the DBA's domain anyway. Applications should not need to muss with this. + // for now do nothing without a compelling reason. function overrides default legacy mysql. + } + + function concat($fld, $sep) { + return 'string_agg(' . $fld . ',\'' . $sep . '\')'; + } +}
\ No newline at end of file |