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authormensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-14 15:39:19 +0000
committermensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-14 15:39:19 +0000
commit1c5685d68f1b73270fb814fe04cbb490eb90ba5f (patch)
tree3d3ada08a934b96fc31531f1327690d7edc6f766 /includes/js/dojox/_sql/common.js
parent104d59099e048688c4dbac37d72137006e396558 (diff)
downloadsemanticscuttle-1c5685d68f1b73270fb814fe04cbb490eb90ba5f.tar.gz
semanticscuttle-1c5685d68f1b73270fb814fe04cbb490eb90ba5f.tar.bz2
Minor fix: Remove DOJO library (60Mo) replaced by link to Google CDN (online DOJO library)
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@159 b3834d28-1941-0410-a4f8-b48e95affb8f
Diffstat (limited to 'includes/js/dojox/_sql/common.js')
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1 files changed, 0 insertions, 538 deletions
diff --git a/includes/js/dojox/_sql/common.js b/includes/js/dojox/_sql/common.js
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--- a/includes/js/dojox/_sql/common.js
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@@ -1,538 +0,0 @@
-if(!dojo._hasResource["dojox._sql.common"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
-dojo._hasResource["dojox._sql.common"] = true;
-dojo.provide("dojox._sql.common");
-
-dojo.require("dojox._sql._crypto");
-
-// summary:
-// Executes a SQL expression.
-// description:
-// There are four ways to call this:
-// 1) Straight SQL: dojox.sql("SELECT * FROM FOOBAR");
-// 2) SQL with parameters: dojox.sql("INSERT INTO FOOBAR VALUES (?)", someParam)
-// 3) Encrypting particular values:
-// dojox.sql("INSERT INTO FOOBAR VALUES (ENCRYPT(?))", someParam, "somePassword", callback)
-// 4) Decrypting particular values:
-// dojox.sql("SELECT DECRYPT(SOMECOL1), DECRYPT(SOMECOL2) FROM
-// FOOBAR WHERE SOMECOL3 = ?", someParam,
-// "somePassword", callback)
-//
-// For encryption and decryption the last two values should be the the password for
-// encryption/decryption, and the callback function that gets the result set.
-//
-// Note: We only support ENCRYPT(?) statements, and
-// and DECRYPT(*) statements for now -- you can not have a literal string
-// inside of these, such as ENCRYPT('foobar')
-//
-// Note: If you have multiple columns to encrypt and decrypt, you can use the following
-// convenience form to not have to type ENCRYPT(?)/DECRYPT(*) many times:
-//
-// dojox.sql("INSERT INTO FOOBAR VALUES (ENCRYPT(?, ?, ?))",
-// someParam1, someParam2, someParam3,
-// "somePassword", callback)
-//
-// dojox.sql("SELECT DECRYPT(SOMECOL1, SOMECOL2) FROM
-// FOOBAR WHERE SOMECOL3 = ?", someParam,
-// "somePassword", callback)
-dojox.sql = new Function("return dojox.sql._exec(arguments);");
-
-dojo.mixin(dojox.sql, {
- dbName: null,
-
- // summary:
- // If true, then we print out any SQL that is executed
- // to the debug window
- debug: (dojo.exists("dojox.sql.debug")?dojox.sql.debug:false),
-
- open: function(dbName){
- if(this._dbOpen && (!dbName || dbName == this.dbName)){
- return;
- }
-
- if(!this.dbName){
- this.dbName = "dot_store_"
- + window.location.href.replace(/[^0-9A-Za-z_]/g, "_");
- // database names in Gears are limited to 64 characters long
- if(this.dbName.length > 63){
- this.dbName = this.dbName.substring(0, 63);
- }
- }
-
- if(!dbName){
- dbName = this.dbName;
- }
-
- try{
- this._initDb();
- this.db.open(dbName);
- this._dbOpen = true;
- }catch(exp){
- throw exp.message||exp;
- }
- },
-
- close: function(dbName){
- // on Internet Explorer, Google Gears throws an exception
- // "Object not a collection", when we try to close the
- // database -- just don't close it on this platform
- // since we are running into a Gears bug; the Gears team
- // said it's ok to not close a database connection
- if(dojo.isIE){ return; }
-
- if(!this._dbOpen && (!dbName || dbName == this.dbName)){
- return;
- }
-
- if(!dbName){
- dbName = this.dbName;
- }
-
- try{
- this.db.close(dbName);
- this._dbOpen = false;
- }catch(exp){
- throw exp.message||exp;
- }
- },
-
- _exec: function(params){
- try{
- // get the Gears Database object
- this._initDb();
-
- // see if we need to open the db; if programmer
- // manually called dojox.sql.open() let them handle
- // it; otherwise we open and close automatically on
- // each SQL execution
- if(!this._dbOpen){
- this.open();
- this._autoClose = true;
- }
-
- // determine our parameters
- var sql = null;
- var callback = null;
- var password = null;
-
- var args = dojo._toArray(params);
-
- sql = args.splice(0, 1)[0];
-
- // does this SQL statement use the ENCRYPT or DECRYPT
- // keywords? if so, extract our callback and crypto
- // password
- if(this._needsEncrypt(sql) || this._needsDecrypt(sql)){
- callback = args.splice(args.length - 1, 1)[0];
- password = args.splice(args.length - 1, 1)[0];
- }
-
- // 'args' now just has the SQL parameters
-
- // print out debug SQL output if the developer wants that
- if(this.debug){
- this._printDebugSQL(sql, args);
- }
-
- // handle SQL that needs encryption/decryption differently
- // do we have an ENCRYPT SQL statement? if so, handle that first
- if(this._needsEncrypt(sql)){
- var crypto = new dojox.sql._SQLCrypto("encrypt", sql,
- password, args,
- callback);
- return; // encrypted results will arrive asynchronously
- }else if(this._needsDecrypt(sql)){ // otherwise we have a DECRYPT statement
- var crypto = new dojox.sql._SQLCrypto("decrypt", sql,
- password, args,
- callback);
- return; // decrypted results will arrive asynchronously
- }
-
- // execute the SQL and get the results
- var rs = this.db.execute(sql, args);
-
- // Gears ResultSet object's are ugly -- normalize
- // these into something JavaScript programmers know
- // how to work with, basically an array of
- // JavaScript objects where each property name is
- // simply the field name for a column of data
- rs = this._normalizeResults(rs);
-
- if(this._autoClose){
- this.close();
- }
-
- return rs;
- }catch(exp){
- exp = exp.message||exp;
-
- console.debug("SQL Exception: " + exp);
-
- if(this._autoClose){
- try{
- this.close();
- }catch(e){
- console.debug("Error closing database: "
- + e.message||e);
- }
- }
-
- throw exp;
- }
- },
-
- _initDb: function(){
- if(!this.db){
- try{
- this.db = google.gears.factory.create('beta.database', '1.0');
- }catch(exp){
- dojo.setObject("google.gears.denied", true);
- dojox.off.onFrameworkEvent("coreOperationFailed");
- throw "Google Gears must be allowed to run";
- }
- }
- },
-
- _printDebugSQL: function(sql, args){
- var msg = "dojox.sql(\"" + sql + "\"";
- for(var i = 0; i < args.length; i++){
- if(typeof args[i] == "string"){
- msg += ", \"" + args[i] + "\"";
- }else{
- msg += ", " + args[i];
- }
- }
- msg += ")";
-
- console.debug(msg);
- },
-
- _normalizeResults: function(rs){
- var results = [];
- if(!rs){ return []; }
-
- while(rs.isValidRow()){
- var row = {};
-
- for(var i = 0; i < rs.fieldCount(); i++){
- var fieldName = rs.fieldName(i);
- var fieldValue = rs.field(i);
- row[fieldName] = fieldValue;
- }
-
- results.push(row);
-
- rs.next();
- }
-
- rs.close();
-
- return results;
- },
-
- _needsEncrypt: function(sql){
- return /encrypt\([^\)]*\)/i.test(sql);
- },
-
- _needsDecrypt: function(sql){
- return /decrypt\([^\)]*\)/i.test(sql);
- }
-});
-
-// summary:
-// A private class encapsulating any cryptography that must be done
-// on a SQL statement. We instantiate this class and have it hold
-// it's state so that we can potentially have several encryption
-// operations happening at the same time by different SQL statements.
-dojo.declare("dojox.sql._SQLCrypto", null, {
- constructor: function(action, sql, password, args, callback){
- if(action == "encrypt"){
- this._execEncryptSQL(sql, password, args, callback);
- }else{
- this._execDecryptSQL(sql, password, args, callback);
- }
- },
-
- _execEncryptSQL: function(sql, password, args, callback){
- // strip the ENCRYPT/DECRYPT keywords from the SQL
- var strippedSQL = this._stripCryptoSQL(sql);
-
- // determine what arguments need encryption
- var encryptColumns = this._flagEncryptedArgs(sql, args);
-
- // asynchronously encrypt each argument that needs it
- var self = this;
- this._encrypt(strippedSQL, password, args, encryptColumns, function(finalArgs){
- // execute the SQL
- var error = false;
- var resultSet = [];
- var exp = null;
- try{
- resultSet = dojox.sql.db.execute(strippedSQL, finalArgs);
- }catch(execError){
- error = true;
- exp = execError.message||execError;
- }
-
- // was there an error during SQL execution?
- if(exp != null){
- if(dojox.sql._autoClose){
- try{ dojox.sql.close(); }catch(e){}
- }
-
- callback(null, true, exp.toString());
- return;
- }
-
- // normalize SQL results into a JavaScript object
- // we can work with
- resultSet = dojox.sql._normalizeResults(resultSet);
-
- if(dojox.sql._autoClose){
- dojox.sql.close();
- }
-
- // are any decryptions necessary on the result set?
- if(dojox.sql._needsDecrypt(sql)){
- // determine which of the result set columns needs decryption
- var needsDecrypt = self._determineDecryptedColumns(sql);
-
- // now decrypt columns asynchronously
- // decrypt columns that need it
- self._decrypt(resultSet, needsDecrypt, password, function(finalResultSet){
- callback(finalResultSet, false, null);
- });
- }else{
- callback(resultSet, false, null);
- }
- });
- },
-
- _execDecryptSQL: function(sql, password, args, callback){
- // strip the ENCRYPT/DECRYPT keywords from the SQL
- var strippedSQL = this._stripCryptoSQL(sql);
-
- // determine which columns needs decryption; this either
- // returns the value *, which means all result set columns will
- // be decrypted, or it will return the column names that need
- // decryption set on a hashtable so we can quickly test a given
- // column name; the key is the column name that needs
- // decryption and the value is 'true' (i.e. needsDecrypt["someColumn"]
- // would return 'true' if it needs decryption, and would be 'undefined'
- // or false otherwise)
- var needsDecrypt = this._determineDecryptedColumns(sql);
-
- // execute the SQL
- var error = false;
- var resultSet = [];
- var exp = null;
- try{
- resultSet = dojox.sql.db.execute(strippedSQL, args);
- }catch(execError){
- error = true;
- exp = execError.message||execError;
- }
-
- // was there an error during SQL execution?
- if(exp != null){
- if(dojox.sql._autoClose){
- try{ dojox.sql.close(); }catch(e){}
- }
-
- callback(resultSet, true, exp.toString());
- return;
- }
-
- // normalize SQL results into a JavaScript object
- // we can work with
- resultSet = dojox.sql._normalizeResults(resultSet);
-
- if(dojox.sql._autoClose){
- dojox.sql.close();
- }
-
- // decrypt columns that need it
- this._decrypt(resultSet, needsDecrypt, password, function(finalResultSet){
- callback(finalResultSet, false, null);
- });
- },
-
- _encrypt: function(sql, password, args, encryptColumns, callback){
- //console.debug("_encrypt, sql="+sql+", password="+password+", encryptColumns="+encryptColumns+", args="+args);
-
- this._totalCrypto = 0;
- this._finishedCrypto = 0;
- this._finishedSpawningCrypto = false;
- this._finalArgs = args;
-
- for(var i = 0; i < args.length; i++){
- if(encryptColumns[i]){
- // we have an encrypt() keyword -- get just the value inside
- // the encrypt() parantheses -- for now this must be a ?
- var sqlParam = args[i];
- var paramIndex = i;
-
- // update the total number of encryptions we know must be done asynchronously
- this._totalCrypto++;
-
- // FIXME: This currently uses DES as a proof-of-concept since the
- // DES code used is quite fast and was easy to work with. Modify dojox.sql
- // to be able to specify a different encryption provider through a
- // a SQL-like syntax, such as dojox.sql("SET ENCRYPTION BLOWFISH"),
- // and modify the dojox.crypto.Blowfish code to be able to work using
- // a Google Gears Worker Pool
-
- // do the actual encryption now, asychronously on a Gears worker thread
- dojox._sql._crypto.encrypt(sqlParam, password, dojo.hitch(this, function(results){
- // set the new encrypted value
- this._finalArgs[paramIndex] = results;
- this._finishedCrypto++;
- // are we done with all encryption?
- if(this._finishedCrypto >= this._totalCrypto
- && this._finishedSpawningCrypto){
- callback(this._finalArgs);
- }
- }));
- }
- }
-
- this._finishedSpawningCrypto = true;
- },
-
- _decrypt: function(resultSet, needsDecrypt, password, callback){
- //console.debug("decrypt, resultSet="+resultSet+", needsDecrypt="+needsDecrypt+", password="+password);
-
- this._totalCrypto = 0;
- this._finishedCrypto = 0;
- this._finishedSpawningCrypto = false;
- this._finalResultSet = resultSet;
-
- for(var i = 0; i < resultSet.length; i++){
- var row = resultSet[i];
-
- // go through each of the column names in row,
- // seeing if they need decryption
- for(var columnName in row){
- if(needsDecrypt == "*" || needsDecrypt[columnName]){
- this._totalCrypto++;
- var columnValue = row[columnName];
-
- // forming a closure here can cause issues, with values not cleanly
- // saved on Firefox/Mac OS X for some of the values above that
- // are needed in the callback below; call a subroutine that will form
- // a closure inside of itself instead
- this._decryptSingleColumn(columnName, columnValue, password, i,
- function(finalResultSet){
- callback(finalResultSet);
- });
- }
- }
- }
-
- this._finishedSpawningCrypto = true;
- },
-
- _stripCryptoSQL: function(sql){
- // replace all DECRYPT(*) occurrences with a *
- sql = sql.replace(/DECRYPT\(\*\)/ig, "*");
-
- // match any ENCRYPT(?, ?, ?, etc) occurrences,
- // then replace with just the question marks in the
- // middle
- var matches = sql.match(/ENCRYPT\([^\)]*\)/ig);
- if(matches != null){
- for(var i = 0; i < matches.length; i++){
- var encryptStatement = matches[i];
- var encryptValue = encryptStatement.match(/ENCRYPT\(([^\)]*)\)/i)[1];
- sql = sql.replace(encryptStatement, encryptValue);
- }
- }
-
- // match any DECRYPT(COL1, COL2, etc) occurrences,
- // then replace with just the column names
- // in the middle
- matches = sql.match(/DECRYPT\([^\)]*\)/ig);
- if(matches != null){
- for(var i = 0; i < matches.length; i++){
- var decryptStatement = matches[i];
- var decryptValue = decryptStatement.match(/DECRYPT\(([^\)]*)\)/i)[1];
- sql = sql.replace(decryptStatement, decryptValue);
- }
- }
-
- return sql;
- },
-
- _flagEncryptedArgs: function(sql, args){
- // capture literal strings that have question marks in them,
- // and also capture question marks that stand alone
- var tester = new RegExp(/([\"][^\"]*\?[^\"]*[\"])|([\'][^\']*\?[^\']*[\'])|(\?)/ig);
- var matches;
- var currentParam = 0;
- var results = [];
- while((matches = tester.exec(sql)) != null){
- var currentMatch = RegExp.lastMatch+"";
-
- // are we a literal string? then ignore it
- if(/^[\"\']/.test(currentMatch)){
- continue;
- }
-
- // do we have an encrypt keyword to our left?
- var needsEncrypt = false;
- if(/ENCRYPT\([^\)]*$/i.test(RegExp.leftContext)){
- needsEncrypt = true;
- }
-
- // set the encrypted flag
- results[currentParam] = needsEncrypt;
-
- currentParam++;
- }
-
- return results;
- },
-
- _determineDecryptedColumns: function(sql){
- var results = {};
-
- if(/DECRYPT\(\*\)/i.test(sql)){
- results = "*";
- }else{
- var tester = /DECRYPT\((?:\s*\w*\s*\,?)*\)/ig;
- var matches;
- while(matches = tester.exec(sql)){
- var lastMatch = new String(RegExp.lastMatch);
- var columnNames = lastMatch.replace(/DECRYPT\(/i, "");
- columnNames = columnNames.replace(/\)/, "");
- columnNames = columnNames.split(/\s*,\s*/);
- dojo.forEach(columnNames, function(column){
- if(/\s*\w* AS (\w*)/i.test(column)){
- column = column.match(/\s*\w* AS (\w*)/i)[1];
- }
- results[column] = true;
- });
- }
- }
-
- return results;
- },
-
- _decryptSingleColumn: function(columnName, columnValue, password, currentRowIndex,
- callback){
- //console.debug("decryptSingleColumn, columnName="+columnName+", columnValue="+columnValue+", currentRowIndex="+currentRowIndex)
- dojox._sql._crypto.decrypt(columnValue, password, dojo.hitch(this, function(results){
- // set the new decrypted value
- this._finalResultSet[currentRowIndex][columnName] = results;
- this._finishedCrypto++;
-
- // are we done with all encryption?
- if(this._finishedCrypto >= this._totalCrypto
- && this._finishedSpawningCrypto){
- //console.debug("done with all decrypts");
- callback(this._finalResultSet);
- }
- }));
- }
-});
-
-}