Subversion Repositories computer_asset_manager_v1

<?php

   include_once("library.php");

   include_once('reports.php');

   include_once( './database.php' );

   function logIt ( $message ) {

      //return;

      $LOGFILE = '/home/rodolico/www/web/computer_asset_manager_v1/logs/debug.log';

      $fp = fopen( $LOGFILE , 'a');

      fwrite($fp, "$message\n" );

      fclose($fp);

   }

   /*

    * function designed to handle input from a form. If the input is

    * unset, will retrun the $default value.

    * Otherwise, will filter the value based on $filter

    * Some common filters are:

    *    FILTER_SANITIZE_SPECIAL_CHARS - clean up text so no HTML

    *    FILTER_SANITIZE_EMAIL         - email addresses

    *    FILTER_SANITIZE_NUMBER_FLOAT  - floating point numbers

    *    FILTER_SANITIZE_NUMBER_INT    - integers

    *    FILTER_SANITIZE_URL           - A URL

    * http://php.net/manual/en/filter.filters.sanitize.php

    */

   function cleanInput ( $value, $default = '', $filter = FILTER_DEFAULT ) {

      // unset or empty values just get the default

      if ( ! isset( $value ) || strlen( trim( $value ) ) == 0 ) return $default;

      return filter_var( trim( $value ), $filter );

   }

   /*

    * function will attempt to make a constant ($value) safe for SQL depending on the type.

    * 

    * if $value is empty, $default is returned, as will happen if any of the

    * conversions (date, datetime, etc...) fail.

    * 

    * First, it will pass it through get_magic_quotes_gpc, 

    * then will run through mysql_real_escape_string

    * 

    * For strings, will encapsulate in quotes

    * Dates will attempt a conversion, then change to YYYY-MM-DD and encapsulate in quotes

    *    if default is the constant now(), will pass that through to MySQL

    * DateTime will perform the same, but change to YYYY-MM-DD HH:MM:SS

    * Integer and Floats are passed through builtins intval and floatval

    * Boolean only checks the first character, a '0', 'f' and 'n' denoting false

    *    all else denoting true. The result is converted based on the variable

    *    $falsetrue, with the first char denoting false and the second denoting true

    */

   function makeSafeSQLConstant ( $value, $type='S', $default='null', $falsetrue='10' ) {

      // return $default on undefined or empty values

      if ( ! isset( $value ) ) return $default;

      if (strlen($value) == 0) return $default;

      // print "Processing $value as $type with default $default<br>\n";

      switch ( strtolower( $type ) ) {

         case 'string' :

         case 's' : 

                  if ( get_magic_quotes_gpc() ) 

                     $value = stripslashes($value);

                  $value = mysql_real_escape_string( $value );

                  $value = strlen( $value ) > 0 ? "'$value'" : $default;

                  break;

         case 'date' :

         case 'd' :

                  if ( $value != 'null' && $value != 'now()' ) {

                     $result = strtotime( $value );

                     $value = ( $result === false ) ? $default : "'" . Date( 'Y-m-d', $result) . "'";

                  }

                  break;

         case 'datetime':

         case 'timestamp':

         case 'dt': 

                  if ( $value != 'null' && $value != 'now()' ) {

                     $result = strtotime( $value );

                     $value = ( $result === false ) ? $default : "'" . Date( 'Y-m-d H:i:s', $result) . "'";

                  }

                  break;

         case 'integer':

         case 'i' :  

                  $value = intval( $value );

                  break;

         case 'float':

         case 'f' :  

                  $value = floatval( $value );

                  break;

         case 'bool':

         case 'boolean':

         case 'b' :  // note, because of the way strpos works, you can not

                     // simply set $value based on the output; you MUST do

                     // as below; specifically check for false, then set the result

                     $value =  strpos( '0fn', strtolower(substr( $value, 0, 1 )) ) === false ? 0 : 1;

                     $value = substr( $falsetrue, $value, 0, 1 );

                     break;

      } // switch

      return $value;

   }

   function lPad( $string, $count, $padChar = '0' ) {

      while ( strlen( $string) < $count ) {

         $string = '0' . $string;

      }

      return $string;

   }

   function makeFileName ( $name, $device_id, $client_id, $site_id ) {

      // we are getting an index. There is a small chance we could end up with duplicates, but since the file

      // name will not consist solely of the index, it should not cause a collision.

      $thisIndex = getOneDBValue( "select theValue from _system where group_name= 'Files' and key_name = 'last index'" );

      $thisIndex++;

      doSQL( "update _system set theValue = '$thisIndex' where group_name= 'Files' and key_name = 'last index'" );

      $thisIndex = lPad( $thisIndex, 6 );

      // start building the file name

      $nameOnDisk = $thisIndex . '-';

      if ( $device_id ) {

         $nameOnDisk .= 'd-';

         $nameOnDisk .= getOneDBValue( "select name from device where device_id = $device_id" );

      } elseif ( $site_id ) {

         $nameOnDisk .= 's-';

         $nameOnDisk .= getOneDBValue( "select name from site where site_id = $site_id" );

      } elseif ( $client_id ) {

         $nameOnDisk .= 'c-';

         $nameOnDisk .= getOneDBValue( "select name from client where client_id = $client_id" );

      } else {

         return array( 'valid' => false, 'message' => 'Error: not able to find client/site/device info' );

      }

      logIt( "File name set to $nameOnDisk before processing" );

      // add the extension

      $nameOnDisk .= '.' . pathinfo($name, PATHINFO_EXTENSION);

      logIt( "File name set to $nameOnDisk after adding extension" );

      // and calculate the relative path to be added to the Files root path value

      $nameOnDisk = getRelativePath( $nameOnDisk ) . $nameOnDisk;

      logIt( "File name set to $nameOnDisk after adding rel path" );

      return array( 'valid' => true, 'filename' => $nameOnDisk );

   } // function saveFile

   /*

    * take the first digits of a file name (which is the index) and turn

    * them into a path, by breaking them into two character directories.

    * Thus, 123456-someFileName.something becomes

    * 12/34/123456-someFileName.something

    * however, this only returns the path part, so it will return

    * 12/34/

    */

   function getRelativePath ( $filename ) {

      // the first part of the file name is the index, which is used to

      // calculate the path, so we'll throw away everything else.

      $filename = explode( '-', $filename )[0];

      while ( strlen( $filename ) > 2 ) {

         $path .= substr( $filename, 0, 2 ) . '/';

         $filename = substr( $filename, 2 );

      }

      return $path;

   }

   /*

    * prepends two directory entries stored in _system table to

    * $filename

    */

   function getAbsolutePath ( $filename ) {

      $path = $_SESSION['file system root']

                . '/' . getOneDBValue( "select theValue from _system where group_name = 'Files' and key_name = 'root path'" )

                . '/' . $filename;

      return $path;

   }

   /*

    * returns the URL path to a file

    */

   function getURLPath ( $filename ) {

      $path = $_SESSION['html root']

                . '/' . getOneDBValue( "select theValue from _system where group_name = 'Files' and key_name = 'root path'" )

                . '/' . $filename;

      return $path;

   }

   function makePath ( $filename ) {

      $path =  pathinfo( $filename, PATHINFO_DIRNAME );

      return is_dir( $path ) ? true : mkdir( $path, 0777, true );

   }

   /*

    * Tries to find $value as a mime type

    * if $value is non-zero numeric, looks it up in the table as mime_type_id

    * if a string, checks for mime_type

    * if still not found, looks for extension

    * returns index into file_mime_type, or 0 if not found

    */

   function check_mime_type ( $value ) {

      if ( is_string( $value ) ) {

         $value = makeSafeSQLConstant( $value );

         // check if they passed in a mime type

         $id = getOneDBValue( "select file_mime_type_id from file_mime_type where mime_type = $value" );

         if ( $id ) return $id;

         // well, no, so check if they passed in an extension

         return getOneDBValue( "select file_mime_type_id from file_mime_type where extension = $value" );

      }

      return null;

   }

   function addFile ( $fields ) {

      logIt( "entering addFile with fields set to\n" . print_r( $fields, true ) );

      // file_id is not set in any query, so get rid of it

      $file_id = $fields['file_id'];

      unset( $fields['file_id'] );

      // based on device, site or client, two fields are created

      if ( $fields['device_id'] ) {

         $fields['owner_type'] = 'd';

         $fields['owner_id'] = $fields['device_id'];

      } elseif ( $fields['site_id'] ) {

         $fields['owner_type'] = 's';

         $fields['owner_id'] = $fields['site_id'];

      } elseif ( $fields['client_id'] ) {

         $fields['owner_type'] = 'c';

         $fields['owner_id'] = $fields['client_id'];

      }

      // these are not actually part of the database, so trash them

      unset( $fields['client_id'] );

      unset( $fields['site_id'] );

      unset( $fields['device_id'] );

      if ( ! isset( $fields['mime_type'] ) ) {

         $extension = pathinfo( $fields['name_on_disk'], PATHINFO_EXTENSION);

         $fields['mime_type'] = getOneDBValue( "select mime_type from file_mime_type where extension = '$extension'" );

      } // if we need to find the mime_type

      foreach ( $fields as $key => $value ) {

         if ( strpos( $key, 'date' ) ) { // field name has date in it

            $fields[$key] = makeSafeSQLConstant( $value, 'd' );

         } else {

            $fields[$key] = makeSafeSQLConstant( $value );

         }

      }

      $fields['file_mime_type_id'] = getOneDBValue( "select file_mime_type_id from file_mime_type where mime_type = $fields[mime_type]" );

      unset( $fields['mime_type'] );

      if ( ! $fields['file_mime_type_id'] ) $fields['file_mime_type_id'] = 'null';

      if ( $file_id  ) { // we are updating an existing record

         $query = array();

         foreach ( $fields as $key => $value ) {

            $query[] = "$key = $value";

         }

         $query = 'update file set ' . implode( ',', $query ) . " where file_id = $file_id";

      } else { // we are adding a new record

         $query = 'insert into file (' . implode( ',', array_keys( $fields ) ) . ') values (' . implode( ',', array_values( $fields ) ) . ')';

      }

      logIt( $query );

      $result = queryDatabaseExtended( $query );

      if ( $result['insert_id'] )

         return array( 'valid' => true, 'message' => "New Record $result[insert_id]" );

      else

         return array( 'valid' => false, 'message' => "Database Error" );

   }

   function return_bytes($val) {

       $val = trim($val);

       $last = strtolower($val[strlen($val)-1]);

       switch($last) 

       {

           case 'g':

           $val *= 1024;

           case 'm':

           $val *= 1024;

           case 'k':

           $val *= 1024;

       }

       return $val;

   } // return_bytes

   function prettyPrintBytes( $value ) {

      $sizes = array( '', 'kilo', 'mega', 'giga', 'tera' );

      while ( $value > 1024 ) {

         $value /= 1024;

         $index++;

      }

      return intval( $value ) . ' ' . $sizes[$index] . 'bytes';

   }

   function maxUploadFileSize () {

       //select maximum upload size

       $max_upload = return_bytes(ini_get('upload_max_filesize'));

       //select post limit

       $max_post = return_bytes(ini_get('post_max_size'));

       //select memory limit

       $memory_limit = return_bytes(ini_get('memory_limit'));

       // return the smallest of them, this defines the real limit

       return prettyPrintBytes( min($max_upload, $max_post, $memory_limit) );

    } // maxUploadFileSize

    function getFileUploadError( $error ) {

       $message = '';

       switch ( $error ) {

          case 0 : $message = 'There is no error, the file uploaded with success';

                   break;

          case 1 : $message = 'The uploaded file exceeds the upload_max_filesize directive in php.ini';

                   break;

          case 2 : $message = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form';

                   break;

          case 3 : $message = 'The uploaded file was only partially uploaded';

                   break;

          case 4 : $message = 'No file was uploaded';

                   break;

          case 6 : $message = 'Missing a temporary folder';

                   break;

          case 7 : $message = 'Failed to write file to disk.';

                   break;

          case 8 : $message = 'A PHP extension stopped the file upload.';

       }

       return array( 'valid' => $error == 0, 'message' => $message );

    } // getFileUploadError

   function uploadFile ( $source, $nameOnDisk ) {

      $saveTo = getAbsolutePath( $nameOnDisk );

      if ( makePath( $saveTo ) ) {

         logIt( "Path Made - $saveTo" );

         logIt( "moving $source to $saveTo" );

         $result['valid'] = move_uploaded_file( $source, $saveTo );

      } else {

         $result = array( 'valid'=>false, 'message' => print_r(error_get_last(), true) );

      } // if move_uploaded_file .. else

      return $result;

   } // uploadFile

?>