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/var/www/instituto-previdencia/public_html/portal/system/database/
10.0.0.135

 
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drivers dir drwxrwxr-x 2021-01-28 14:45 R D
  DB.php 6.517 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  DB_cache.php 5.759 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  DB_driver.php 44.865 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  DB_forge.php 23.58 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  DB_query_builder.php 62.227 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  DB_result.php 13.966 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  DB_utility.php 10.593 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
  index.html 0.128 KB -rw-rw-r-- 2021-01-28 14:41 R E G D
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$val) { $this->$key = $val; } } log_message('info', 'Database Driver Class Initialized'); } // -------------------------------------------------------------------- /** * Initialize Database Settings * * @return bool */ public function initialize() { /* If an established connection is available, then there's * no need to connect and select the database. * * Depending on the database driver, conn_id can be either * boolean TRUE, a resource or an object. */ if ($this->conn_id) { return TRUE; } // ---------------------------------------------------------------- // Connect to the database and set the connection ID $this->conn_id = $this->db_connect($this->pconnect); // No connection resource? Check if there is a failover else throw an error if ( ! $this->conn_id) { // Check if there is a failover set if ( ! empty($this->failover) && is_array($this->failover)) { // Go over all the failovers foreach ($this->failover as $failover) { // Replace the current settings with those of the failover foreach ($failover as $key => $val) { $this->$key = $val; } // Try to connect $this->conn_id = $this->db_connect($this->pconnect); // If a connection is made break the foreach loop if ($this->conn_id) { break; } } } // We still don't have a connection? if ( ! $this->conn_id) { log_message('error', 'Unable to connect to the database'); if ($this->db_debug) { $this->display_error('db_unable_to_connect'); } return FALSE; } } // Now we set the character set and that's all return $this->db_set_charset($this->char_set); } // -------------------------------------------------------------------- /** * DB connect * * This is just a dummy method that all drivers will override. * * @return mixed */ public function db_connect() { return TRUE; } // -------------------------------------------------------------------- /** * Persistent database connection * * @return mixed */ public function db_pconnect() { return $this->db_connect(TRUE); } // -------------------------------------------------------------------- /** * Reconnect * * Keep / reestablish the db connection if no queries have been * sent for a length of time exceeding the server's idle timeout. * * This is just a dummy method to allow drivers without such * functionality to not declare it, while others will override it. * * @return void */ public function reconnect() { } // -------------------------------------------------------------------- /** * Select database * * This is just a dummy method to allow drivers without such * functionality to not declare it, while others will override it. * * @return bool */ public function db_select() { return TRUE; } // -------------------------------------------------------------------- /** * Last error * * @return array */ public function error() { return array('code' => NULL, 'message' => NULL); } // -------------------------------------------------------------------- /** * Set client character set * * @param string * @return bool */ public function db_set_charset($charset) { if (method_exists($this, '_db_set_charset') && ! $this->_db_set_charset($charset)) { log_message('error', 'Unable to set database connection charset: '.$charset); if ($this->db_debug) { $this->display_error('db_unable_to_set_charset', $charset); } return FALSE; } return TRUE; } // -------------------------------------------------------------------- /** * The name of the platform in use (mysql, mssql, etc...) * * @return string */ public function platform() { return $this->dbdriver; } // -------------------------------------------------------------------- /** * Database version number * * Returns a string containing the version of the database being used. * Most drivers will override this method. * * @return string */ public function version() { if (isset($this->data_cache['version'])) { return $this->data_cache['version']; } if (FALSE === ($sql = $this->_version())) { return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE; } $query = $this->query($sql)->row(); return $this->data_cache['version'] = $query->ver; } // -------------------------------------------------------------------- /** * Version number query string * * @return string */ protected function _version() { return 'SELECT VERSION() AS ver'; } // -------------------------------------------------------------------- /** * Execute the query * * Accepts an SQL string as input and returns a result object upon * successful execution of a "read" type query. Returns boolean TRUE * upon successful execution of a "write" type query. Returns boolean * FALSE upon failure, and if the $db_debug variable is set to TRUE * will raise an error. * * @param string $sql * @param array $binds = FALSE An array of binding data * @param bool $return_object = NULL * @return mixed */ public function query($sql, $binds = FALSE, $return_object = NULL) { if ($sql === '') { log_message('error', 'Invalid query: '.$sql); return ($this->db_debug) ? $this->display_error('db_invalid_query') : FALSE; } elseif ( ! is_bool($return_object)) { $return_object = ! $this->is_write_type($sql); } // Verify table prefix and replace if necessary if ($this->dbprefix !== '' && $this->swap_pre !== '' && $this->dbprefix !== $this->swap_pre) { $sql = preg_replace('/(\W)'.$this->swap_pre.'(\S+?)/', '\\1'.$this->dbprefix.'\\2', $sql); } // Compile binds if needed if ($binds !== FALSE) { $sql = $this->compile_binds($sql, $binds); } // Is query caching enabled? If the query is a "read type" // we will load the caching class and return the previously // cached query if it exists if ($this->cache_on === TRUE && $return_object === TRUE && $this->_cache_init()) { $this->load_rdriver(); if (FALSE !== ($cache = $this->CACHE->read($sql))) { return $cache; } } // Save the query for debugging if ($this->save_queries === TRUE) { $this->queries[] = $sql; } // Start the Query Timer $time_start = microtime(TRUE); // Run the Query if (FALSE === ($this->result_id = $this->simple_query($sql))) { if ($this->save_queries === TRUE) { $this->query_times[] = 0; } // This will trigger a rollback if transactions are being used if ($this->_trans_depth !== 0) { $this->_trans_status = FALSE; } // Grab the error now, as we might run some additional queries before displaying the error $error = $this->error(); // Log errors log_message('error', 'Query error: '.$error['message'].' - Invalid query: '.$sql); if ($this->db_debug) { // We call this function in order to roll-back queries // if transactions are enabled. If we don't call this here // the error message will trigger an exit, causing the // transactions to remain in limbo. while ($this->_trans_depth !== 0) { $trans_depth = $this->_trans_depth; $this->trans_complete(); if ($trans_depth === $this->_trans_depth) { log_message('error', 'Database: Failure during an automated transaction commit/rollback!'); break; } } // Display errors return $this->display_error(array('Error Number: '.$error['code'], $error['message'], $sql)); } return FALSE; } // Stop and aggregate the query time results $time_end = microtime(TRUE); $this->benchmark += $time_end - $time_start; if ($this->save_queries === TRUE) { $this->query_times[] = $time_end - $time_start; } // Increment the query counter $this->query_count++; // Will we have a result object instantiated? If not - we'll simply return TRUE if ($return_object !== TRUE) { // If caching is enabled we'll auto-cleanup any existing files related to this particular URI if ($this->cache_on === TRUE && $this->cache_autodel === TRUE && $this->_cache_init()) { $this->CACHE->delete(); } return TRUE; } // Load and instantiate the result driver $driver = $this->load_rdriver(); $RES = new $driver($this); // Is query caching enabled? If so, we'll serialize the // result object and save it to a cache file. if ($this->cache_on === TRUE && $this->_cache_init()) { // We'll create a new instance of the result object // only without the platform specific driver since // we can't use it with cached data (the query result // resource ID won't be any good once we've cached the // result object, so we'll have to compile the data // and save it) $CR = new CI_DB_result($this); $CR->result_object = $RES->result_object(); $CR->result_array = $RES->result_array(); $CR->num_rows = $RES->num_rows(); // Reset these since cached objects can not utilize resource IDs. $CR->conn_id = NULL; $CR->result_id = NULL; $this->CACHE->write($sql, $CR); } return $RES; } // -------------------------------------------------------------------- /** * Load the result drivers * * @return string the name of the result class */ public function load_rdriver() { $driver = 'CI_DB_'.$this->dbdriver.'_result'; if ( ! class_exists($driver, FALSE)) { require_once(BASEPATH.'database/DB_result.php'); require_once(BASEPATH.'database/drivers/'.$this->dbdriver.'/'.$this->dbdriver.'_result.php'); } return $driver; } // -------------------------------------------------------------------- /** * Simple Query * This is a simplified version of the query() function. Internally * we only use it when running transaction commands since they do * not require all the features of the main query() function. * * @param string the sql query * @return mixed */ public function simple_query($sql) { if ( ! $this->conn_id) { if ( ! $this->initialize()) { return FALSE; } } return $this->_execute($sql); } // -------------------------------------------------------------------- /** * Disable Transactions * This permits transactions to be disabled at run-time. * * @return void */ public function trans_off() { $this->trans_enabled = FALSE; } // -------------------------------------------------------------------- /** * Enable/disable Transaction Strict Mode * * When strict mode is enabled, if you are running multiple groups of * transactions, if one group fails all subsequent groups will be * rolled back. * * If strict mode is disabled, each group is treated autonomously, * meaning a failure of one group will not affect any others * * @param bool $mode = TRUE * @return void */ public function trans_strict($mode = TRUE) { $this->trans_strict = is_bool($mode) ? $mode : TRUE; } // -------------------------------------------------------------------- /** * Start Transaction * * @param bool $test_mode = FALSE * @return bool */ public function trans_start($test_mode = FALSE) { if ( ! $this->trans_enabled) { return FALSE; } return $this->trans_begin($test_mode); } // -------------------------------------------------------------------- /** * Complete Transaction * * @return bool */ public function trans_complete() { if ( ! $this->trans_enabled) { return FALSE; } // The query() function will set this flag to FALSE in the event that a query failed if ($this->_trans_status === FALSE OR $this->_trans_failure === TRUE) { $this->trans_rollback(); // If we are NOT running in strict mode, we will reset // the _trans_status flag so that subsequent groups of // transactions will be permitted. if ($this->trans_strict === FALSE) { $this->_trans_status = TRUE; } log_message('debug', 'DB Transaction Failure'); return FALSE; } return $this->trans_commit(); } // -------------------------------------------------------------------- /** * Lets you retrieve the transaction flag to determine if it has failed * * @return bool */ public function trans_status() { return $this->_trans_status; } // -------------------------------------------------------------------- /** * Begin Transaction * * @param bool $test_mode * @return bool */ public function trans_begin($test_mode = FALSE) { if ( ! $this->trans_enabled) { return FALSE; } // When transactions are nested we only begin/commit/rollback the outermost ones elseif ($this->_trans_depth > 0) { $this->_trans_depth++; return TRUE; } // Reset the transaction failure flag. // If the $test_mode flag is set to TRUE transactions will be rolled back // even if the queries produce a successful result. $this->_trans_failure = ($test_mode === TRUE); if ($this->_trans_begin()) { $this->_trans_status = TRUE; $this->_trans_depth++; return TRUE; } return FALSE; } // -------------------------------------------------------------------- /** * Commit Transaction * * @return bool */ public function trans_commit() { if ( ! $this->trans_enabled OR $this->_trans_depth === 0) { return FALSE; } // When transactions are nested we only begin/commit/rollback the outermost ones elseif ($this->_trans_depth > 1 OR $this->_trans_commit()) { $this->_trans_depth--; return TRUE; } return FALSE; } // -------------------------------------------------------------------- /** * Rollback Transaction * * @return bool */ public function trans_rollback() { if ( ! $this->trans_enabled OR $this->_trans_depth === 0) { return FALSE; } // When transactions are nested we only begin/commit/rollback the outermost ones elseif ($this->_trans_depth > 1 OR $this->_trans_rollback()) { $this->_trans_depth--; return TRUE; } return FALSE; } // -------------------------------------------------------------------- /** * Compile Bindings * * @param string the sql statement * @param array an array of bind data * @return string */ public function compile_binds($sql, $binds) { if (empty($this->bind_marker) OR strpos($sql, $this->bind_marker) === FALSE) { return $sql; } elseif ( ! is_array($binds)) { $binds = array($binds); $bind_count = 1; } else { // Make sure we're using numeric keys $binds = array_values($binds); $bind_count = count($binds); } // We'll need the marker length later $ml = strlen($this->bind_marker); // Make sure not to replace a chunk inside a string that happens to match the bind marker if ($c = preg_match_all("/'[^']*'|\"[^\"]*\"/i", $sql, $matches)) { $c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i', str_replace($matches[0], str_replace($this->bind_marker, str_repeat(' ', $ml), $matches[0]), $sql, $c), $matches, PREG_OFFSET_CAPTURE); // Bind values' count must match the count of markers in the query if ($bind_count !== $c) { return $sql; } } elseif (($c = preg_match_all('/'.preg_quote($this->bind_marker, '/').'/i', $sql, $matches, PREG_OFFSET_CAPTURE)) !== $bind_count) { return $sql; } do { $c--; $escaped_value = $this->escape($binds[$c]); if (is_array($escaped_value)) { $escaped_value = '('.implode(',', $escaped_value).')'; } $sql = substr_replace($sql, $escaped_value, $matches[0][$c][1], $ml); } while ($c !== 0); return $sql; } // -------------------------------------------------------------------- /** * Determines if a query is a "write" type. * * @param string An SQL query string * @return bool */ public function is_write_type($sql) { return (bool) preg_match('/^\s*"?(SET|INSERT|UPDATE|DELETE|REPLACE|CREATE|DROP|TRUNCATE|LOAD|COPY|ALTER|RENAME|GRANT|REVOKE|LOCK|UNLOCK|REINDEX|MERGE)\s/i', $sql); } // -------------------------------------------------------------------- /** * Calculate the aggregate query elapsed time * * @param int The number of decimal places * @return string */ public function elapsed_time($decimals = 6) { return number_format($this->benchmark, $decimals); } // -------------------------------------------------------------------- /** * Returns the total number of queries * * @return int */ public function total_queries() { return $this->query_count; } // -------------------------------------------------------------------- /** * Returns the last query that was executed * * @return string */ public function last_query() { return end($this->queries); } // -------------------------------------------------------------------- /** * "Smart" Escape String * * Escapes data based on type * Sets boolean and null types * * @param string * @return mixed */ public function escape($str) { if (is_array($str)) { $str = array_map(array(&$this, 'escape'), $str); return $str; } elseif (is_string($str) OR (is_object($str) && method_exists($str, '__toString'))) { return "'".$this->escape_str($str)."'"; } elseif (is_bool($str)) { return ($str === FALSE) ? 0 : 1; } elseif ($str === NULL) { return 'NULL'; } return $str; } // -------------------------------------------------------------------- /** * Escape String * * @param string|string[] $str Input string * @param bool $like Whether or not the string will be used in a LIKE condition * @return string */ public function escape_str($str, $like = FALSE) { if (is_array($str)) { foreach ($str as $key => $val) { $str[$key] = $this->escape_str($val, $like); } return $str; } $str = $this->_escape_str($str); // escape LIKE condition wildcards if ($like === TRUE) { return str_replace( array($this->_like_escape_chr, '%', '_'), array($this->_like_escape_chr.$this->_like_escape_chr, $this->_like_escape_chr.'%', $this->_like_escape_chr.'_'), $str ); } return $str; } // -------------------------------------------------------------------- /** * Escape LIKE String * * Calls the individual driver for platform * specific escaping for LIKE conditions * * @param string|string[] * @return mixed */ public function escape_like_str($str) { return $this->escape_str($str, TRUE); } // -------------------------------------------------------------------- /** * Platform-dependent string escape * * @param string * @return string */ protected function _escape_str($str) { return str_replace("'", "''", remove_invisible_characters($str, FALSE)); } // -------------------------------------------------------------------- /** * Primary * * Retrieves the primary key. It assumes that the row in the first * position is the primary key * * @param string $table Table name * @return string */ public function primary($table) { $fields = $this->list_fields($table); return is_array($fields) ? current($fields) : FALSE; } // -------------------------------------------------------------------- /** * "Count All" query * * Generates a platform-specific query string that counts all records in * the specified database * * @param string * @return int */ public function count_all($table = '') { if ($table === '') { return 0; } $query = $this->query($this->_count_string.$this->escape_identifiers('numrows').' FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE)); if ($query->num_rows() === 0) { return 0; } $query = $query->row(); $this->_reset_select(); return (int) $query->numrows; } // -------------------------------------------------------------------- /** * Returns an array of table names * * @param string $constrain_by_prefix = FALSE * @return array */ public function list_tables($constrain_by_prefix = FALSE) { // Is there a cached result? if (isset($this->data_cache['table_names'])) { return $this->data_cache['table_names']; } if (FALSE === ($sql = $this->_list_tables($constrain_by_prefix))) { return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE; } $this->data_cache['table_names'] = array(); $query = $this->query($sql); foreach ($query->result_array() as $row) { // Do we know from which column to get the table name? if ( ! isset($key)) { if (isset($row['table_name'])) { $key = 'table_name'; } elseif (isset($row['TABLE_NAME'])) { $key = 'TABLE_NAME'; } else { /* We have no other choice but to just get the first element's key. * Due to array_shift() accepting its argument by reference, if * E_STRICT is on, this would trigger a warning. So we'll have to * assign it first. */ $key = array_keys($row); $key = array_shift($key); } } $this->data_cache['table_names'][] = $row[$key]; } return $this->data_cache['table_names']; } // -------------------------------------------------------------------- /** * Determine if a particular table exists * * @param string $table_name * @return bool */ public function table_exists($table_name) { return in_array($this->protect_identifiers($table_name, TRUE, FALSE, FALSE), $this->list_tables()); } // -------------------------------------------------------------------- /** * Fetch Field Names * * @param string $table Table name * @return array */ public function list_fields($table) { if (FALSE === ($sql = $this->_list_columns($table))) { return ($this->db_debug) ? $this->display_error('db_unsupported_function') : FALSE; } $query = $this->query($sql); $fields = array(); foreach ($query->result_array() as $row) { // Do we know from where to get the column's name? if ( ! isset($key)) { if (isset($row['column_name'])) { $key = 'column_name'; } elseif (isset($row['COLUMN_NAME'])) { $key = 'COLUMN_NAME'; } else { // We have no other choice but to just get the first element's key. $key = key($row); } } $fields[] = $row[$key]; } return $fields; } // -------------------------------------------------------------------- /** * Determine if a particular field exists * * @param string * @param string * @return bool */ public function field_exists($field_name, $table_name) { return in_array($field_name, $this->list_fields($table_name)); } // -------------------------------------------------------------------- /** * Returns an object with field data * * @param string $table the table name * @return array */ public function field_data($table) {