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@maditya
maditya committed Jun 18, 2015
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15 changes: 15 additions & 0 deletions .gitignore
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# install
*.log
node_modules

# test
xunit.xml
artifacts
coverage

# build
docs

# temp files
*.swp
*.swo
57 changes: 57 additions & 0 deletions Gruntfile.js
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/*
* Copyright 2015, Yahoo Inc.
* Copyrights licensed under the New BSD License.
* See the accompanying LICENSE file for terms.
*/
module.exports = function(grunt) {

grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
jshint: {
files: ['src/*.js'],
options: {
scripturl: true,
camelcase: true
}
},
copy: {
testResultFile: {
files: [
{ dest: 'artifacts/test/node-test-results.xml', src: 'xunit.xml'}
]
}
},
mocha_istanbul: {
coverage: {
src: 'tests/unit',
options: {
coverageFolder: 'artifacts/test/coverage',
check: {
lines: 80,
statements: 80
},
timeout: 10000,
reporter: 'xunit-file'
}
},
target: {
src: 'tests/unit'
}
},
clean: {
all: ['xunit.xml', 'artifacts', 'coverage', 'node_modules'],
buildResidues: ['xunit.xml', 'artifacts', 'coverage']
}
});

grunt.loadNpmTasks('grunt-mocha-istanbul');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.loadNpmTasks('grunt-contrib-clean');
grunt.loadNpmTasks('grunt-contrib-copy');

grunt.registerTask('test', ['jshint', 'clean:buildResidues', 'mocha_istanbul:coverage', 'copy:testResultFile']);
grunt.registerTask('unittest', ['jshint', 'clean:buildResidues', 'mocha_istanbul:target']);

grunt.registerTask('default', ['test']);

};
31 changes: 31 additions & 0 deletions LICENSE
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Copyright 2015, Yahoo Inc.

Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
conditions are met:

* Redistributions of source code must retain the above
copyright notice, this list of conditions and the
following disclaimer.

* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the
following disclaimer in the documentation and/or other
materials provided with the distribution.

* Neither the name of Yahoo! Inc. nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
written permission of Yahoo! Inc.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
43 changes: 43 additions & 0 deletions README.md
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@@ -0,0 +1,43 @@
HTML5 Purify
====================

HTML5 Purifier - a fast and small footprint HTML5 purifier. The module uses a whitelist based approach to filter malicious characters, while keeping the resulting output HTML5 compliant. It uses <a href="https://github.com/yahoo/context-parser">context parser</a> for parsing the input string, <a href="https://github.com/yahoo/xss-filters">xss filters</a> for filtering URI attribute values and <a href="https://github.com/yahoo/css-js">css-js</a> for filtering CSS data within the HTML input.

## Quick Start

Install html-purify from the npm repo
```shell
npm install html-purify
```

Server side use(nodejs)

```js
/* create the html purifier */
var Purifier = require('html-purify');
var purifier = new Purifier();

var input = '...';
/* filter the input string */
var result = purifier.purify(input);
```

## Development

### How to build
```shell
npm install
npm run-script build
```

### How to test
```shell
npm test
```

## License

This software is free to use under the Yahoo Inc. BSD license.
See the [LICENSE file][] for license text and copyright information.

[LICENSE file]: ./LICENSE
72 changes: 72 additions & 0 deletions bin/html-purifier.js
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#!/usr/bin/env node
/*
Copyright 2015, Yahoo Inc.
Copyrights licensed under the New BSD License.
See the accompanying LICENSE file for terms.
*/

/*
This utility prints out sanitized html content
*/
var Debug = require("debug"),
progname = 'HTML-Purifier';
var Purifier = require('../src/html-purify');

Debug.enable(progname);

(function() {
var fs = require('fs'),
file,
lineByLine = 0,
noofargs = 0;

process.argv.forEach(function(val, index) {
++noofargs;
if (index === 2) {
file = val;
}
if (index === 3) {
if (val === "-l") {
lineByLine = 1;
}
}
});

if (noofargs >= 3) {
if (fs.existsSync(file)) {
var data = fs.readFileSync(file, 'utf-8');
var i;
var output = '';
if (lineByLine) {
// reading and processing line by line
var data2 = data.split(/\n/);
for (i = 0; i < data2.length; i++) {
if (data2[i].length !== 0) {
output = (new Purifier()).purify(data2[i]);
console.log("*****");
console.log("input ==> " + data2[i]);
console.log("output ==> " + output);
}
}

} else {
var start = +new Date();
output = (new Purifier()).purify(data);
/*for (i = 0; i < 100; i++) {
output = (new Purifier()).purify(data);
}*/
var end = +new Date();
console.log(output);
//console.log("html-purify runs at a speed of " + 10/((end - start)/1000) + " MB per seconds [" + (end-start)/10/1000 + " second per MB].");
}
process.exit(0);
} else {
console.log("[ERROR] "+file+" not exist");
process.exit(1);
}
} else {
console.log("Usage: html-purifier <any html file>");
process.exit(1);
}

}).call(this);
27 changes: 27 additions & 0 deletions bower.json
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{
"name": "html-purify",
"version": "1.0.0",
"description": "HTML Purifier",
"main": "dist/html-purify.js",
"moduleType": [
"node"
],
"keywords": [
"xss",
"html5"
],
"authors": [
"Aditya Mahendrakar <maditya@yahoo-inc.com>",
"Albert Yu <albertyu@yahoo-inc.com>",
"Nera Liu <neraliu@yahoo-inc.com>"
],
"license": "BSD",
"private": true,
"ignore": [
"**/.*",
"node_modules",
"bower_components",
"test",
"tests"
]
}
57 changes: 57 additions & 0 deletions package.json
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@@ -0,0 +1,57 @@
{
"name": "html-purify",
"version": "1.0.0",
"licenses": [
{
"type": "BSD",
"url": "https://github.com/yahoo/html-purify/blob/master/LICENSE"
}
],
"author": "Aditya Mahendrakar",
"contributors": [
"Aditya Mahendrakar <maditya@yahoo-inc.com>",
"Nera Liu <neraliu@yahoo-inc.com>",
"Adonis Fung <adon@yahoo-inc.com>",
"Albert Yu <albertyu@yahoo-inc.com>"
],
"description": "HTML5 Purifier",
"repository": {
"type": "git",
"url": "git@github.com:yahoo/html-purify.git"
},
"keywords": [
"xss",
"html5"
],
"scripts": {
"hint": "grunt jshint",
"build": "npm install; grunt",
"clean": "grunt clean",
"test": "grunt test"
},
"dependencies": {
"debug": "^2.*",
"context-parser": "^2.0.0",
"xss-filters": "^1.1.0",
"css-js": "1.0.3"
},
"devDependencies": {
"expect.js": "^0.3.1",
"grunt": "^0.4.5",
"grunt-cli": "0.1.*",
"grunt-contrib-clean": "^0.6.0",
"grunt-contrib-jshint": "^0.11.0",
"grunt-mocha-istanbul": "^2.3.0",
"grunt-contrib-copy": "^0.7.0",
"xunit-file": "0.0.6"
},
"main": "./src/context-parser.js",
"bugs": {
"url": "https://github.com/yahoo/html-purify/issues"
},
"homepage": "https://github.com/yahoo/html-purify",
"directories": {
"test": "tests"
},
"license": "BSD"
}
89 changes: 89 additions & 0 deletions src/derived-states.js
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/*
Copyright 2015, Yahoo Inc.
Copyrights licensed under the New BSD License.
See the accompanying LICENSE file for terms.
*/

// key is the "previous" state, key in the value object is "next" state and its value indicates what action we should take. For example, the first line indicates previous state is 1, next state is 1 and return value is 1 (and we'd have logic to add the character to output stream when return value is 1)
// this will eventually move to context parser and it will not be a sparse matrix
var DerivedState = {};
DerivedState.TransitionsSparse = {
1: {1: 1},
8: {45: 5},
10: {1: 2},
34: {1: 2, 43: 6},
35: {1: 2, 36: 3},
36: {1: 2},
38: {42: 4},
39: {42: 4},
40: {1: 2, 34: 4},
42: {1: 2},
43: {1: 2},
44: {1: 1, 44: 1},
45: {44: 1, 53: 1},
46: {48: 1},
48: {48: 1, 49: 1},
49: {48: 1, 50: 1},
50: {1: 1},
53: {46: 1}
};

DerivedState.Transitions = [
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[0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0],
[0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0]
];

module.exports = DerivedState;

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