Initial commit.

packages/xo-acl-resolver/.babelrc

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+{
+ "comments": false,
+ "compact": true,
+ "presets": [
+   "stage-0",
+   "es2015"
+ ]
+}

packages/xo-acl-resolver/.editorconfig

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+# http://EditorConfig.org
+#
+# Julien Fontanet's configuration
+# https://gist.github.com/julien-f/8096213
+
+# Top-most EditorConfig file.
+root = true
+
+# Common config.
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespaces = true
+
+# CoffeeScript
+#
+# https://github.com/polarmobile/coffeescript-style-guide/blob/master/README.md
+[*.{,lit}coffee]
+indent_size = 2
+indent_style = space
+
+# Markdown
+[*.{md,mdwn,mdown,markdown}]
+indent_size = 4
+indent_style = space
+
+# Package.json
+#
+# This indentation style is the one used by npm.
+[/package.json]
+indent_size = 2
+indent_style = space
+
+# Jade
+[*.jade]
+indent_size = 2
+indent_style = space
+
+# JavaScript
+#
+# Two spaces seems to be the standard most common style, at least in
+# Node.js (http://nodeguide.com/style.html#tabs-vs-spaces).
+[*.js]
+indent_size = 2
+indent_style = space
+
+# Less
+[*.less]
+indent_size = 2
+indent_style = space
+
+# Sass
+#
+# Style used for http://libsass.com
+[*.s[ac]ss]
+indent_size = 2
+indent_style = space
+
+# YAML
+#
+# Only spaces are allowed.
+[*.yaml]
+indent_size = 2
+indent_style = space

packages/xo-acl-resolver/.gitignore

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+/.nyc_output/
+/bower_components/
+/dist/
+
+npm-debug.log
+npm-debug.log.*
+
+!node_modules/*
+node_modules/*/

packages/xo-acl-resolver/.mocha.js

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+Error.stackTraceLimit = 100
+
+try { require('trace') } catch (_) {}
+try { require('clarify') } catch (_) {}
+try { require('source-map-support/register') } catch (_) {}

packages/xo-acl-resolver/.mocha.opts

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+--require ./.mocha.js

packages/xo-acl-resolver/.npmignore

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+/examples/
+example.js
+example.js.map
+*.example.js
+*.example.js.map
+
+/test/
+/tests/
+*.spec.js
+*.spec.js.map

packages/xo-acl-resolver/.travis.yml

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+language: node_js
+node_js:
+  - 'stable'
+  - '4'
+  - '0.12'
+
+# Use containers.
+# http://docs.travis-ci.com/user/workers/container-based-infrastructure/
+sudo: false

packages/xo-acl-resolver/README.md

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+# xo-acl-resolver [![Build Status](https://travis-ci.org/vatesfr/xo-acl-resolver.png?branch=master)](https://travis-ci.org/vatesfr/xo-acl-resolver)
+
+> [Xen-Orchestra](http://xen-orchestra.com/) internal: do ACLs resolution.
+
+## Install
+
+Installation of the [npm package](https://npmjs.org/package/xo-acl-resolver):
+
+```
+> npm install --save xo-acl-resolver
+```
+
+## Usage
+
+**TODO**
+
+## Development
+
+### Installing dependencies
+
+```
+> npm install
+```
+
+### Compilation
+
+The sources files are watched and automatically recompiled on changes.
+
+```
+> npm run dev
+```
+
+### Tests
+
+```
+> npm run test-dev
+```
+
+## Contributions
+
+Contributions are *very* welcomed, either on the documentation or on
+the code.
+
+You may:
+
+- report any [issue](https://github.com/vatesfr/xo-acl-resolver/issues)
+  you've encountered;
+- fork and create a pull request.
+
+## License
+
+ISC © [Vates SAS](https://vates.fr)

packages/xo-acl-resolver/package.json

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+{
+  "name": "xo-acl-resolver",
+  "version": "0.0.0",
+  "license": "ISC",
+  "description": "Xen-Orchestra internal: do ACLs resolution",
+  "keywords": [],
+  "homepage": "https://github.com/vatesfr/xo-acl-resolver",
+  "bugs": "https://github.com/vatesfr/xo-acl-resolver/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/vatesfr/xo-acl-resolver"
+  },
+  "author": {
+    "name": "Julien Fontanet",
+    "email": "julien.fontanet@vates.fr"
+  },
+  "preferGlobal": false,
+  "main": "dist/",
+  "bin": {},
+  "files": [
+    "dist/"
+  ],
+  "engines": {
+    "node": ">=0.12"
+  },
+  "devDependencies": {
+    "babel-cli": "^6.4.5",
+    "babel-eslint": "^4.1.8",
+    "babel-preset-es2015": "^6.3.13",
+    "babel-preset-stage-0": "^6.3.13",
+    "clarify": "^1.0.5",
+    "dependency-check": "^2.5.1",
+    "mocha": "^2.4.5",
+    "must": "^0.13.1",
+    "nyc": "^5.5.0",
+    "source-map-support": "^0.4.0",
+    "standard": "^5.4.1",
+    "trace": "^2.0.2"
+  },
+  "scripts": {
+    "build": "babel --source-maps --out-dir=dist/ src/",
+    "depcheck": "dependency-check ./package.json",
+    "dev": "babel --watch --source-maps --out-dir=dist/ src/",
+    "dev-test": "mocha --opts .mocha.opts --watch --reporter=min \"dist/**/*.spec.js\"",
+    "lint": "standard",
+    "posttest": "npm run lint && npm run depcheck",
+    "prepublish": "npm run build",
+    "test": "nyc mocha --opts .mocha.opts \"dist/**/*.spec.js\""
+  },
+  "standard": {
+    "ignore": [
+      "dist/**"
+    ],
+    "parser": "babel-eslint"
+  }
+}

packages/xo-acl-resolver/src/index.js

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+// These global variables are not a problem because the algorithm is
+// synchronous.
+let permissionsByObject
+let getObject
+
+// -------------------------------------------------------------------
+
+const authorized = () => true // eslint-disable-line no-unused-vars
+const forbiddden = () => false // eslint-disable-line no-unused-vars
+
+const and = (...checkers) => (object, permission) => { // eslint-disable-line no-unused-vars
+  for (const checker of checkers) {
+    if (!checker(object, permission)) {
+      return false
+    }
+  }
+  return true
+}
+
+const or = (...checkers) => (object, permission) => { // eslint-disable-line no-unused-vars
+  for (const checker of checkers) {
+    if (checker(object, permission)) {
+      return true
+    }
+  }
+  return false
+}
+
+// -------------------------------------------------------------------
+
+const checkMember = memberName => (object, permission) => {
+  const member = object[memberName]
+  return checkAuthorization(member, permission)
+}
+
+const checkSelf = ({ id }, permission) => {
+  const permissionsForObject = permissionsByObject[id]
+
+  return (
+    permissionsForObject &&
+    permissionsForObject[permission]
+  )
+}
+
+// ===================================================================
+
+const checkAuthorizationByTypes = {
+  host: or(checkSelf, checkMember('$pool')),
+
+  message: checkMember('$object'),
+
+  network: or(checkSelf, checkMember('$pool')),
+
+  SR: or(checkSelf, checkMember('$pool')),
+
+  task: checkMember('$host'),
+
+  VBD: checkMember('VDI'),
+
+  // Access to a VDI is granted if the user has access to the
+  // containing SR or to a linked VM.
+  VDI (vdi, permission) {
+    // Check authorization for the containing SR.
+    if (checkAuthorization(vdi.$SR, permission)) {
+      return true
+    }
+
+    // Check authorization for each of the connected VMs.
+    for (const { VM: vm } of vdi.$VBDs) {
+      if (checkAuthorization(vm, permission)) {
+        return true
+      }
+    }
+
+    return false
+  },
+
+  VIF: or(checkMember('$network'), checkMember('$VM')),
+
+  VM: or(checkSelf, checkMember('$container')),
+
+  'VM-snapshot': checkMember('$snapshot_of'),
+
+  'VM-template': authorized
+}
+
+// Hoisting is important for this function.
+function checkAuthorization (objectId, permission) {
+  const object = getObject(objectId)
+  const checker = checkAuthorizationByTypes[object.type] || checkSelf
+
+  return checker(object, permission)
+}
+
+// -------------------------------------------------------------------
+
+export default (
+  permissionsByObject_,
+  getObject_,
+  permissions
+) => {
+  // Assign global variables.
+  permissionsByObject = permissionsByObject_
+  getObject = getObject_
+
+  try {
+    for (const [objectId, permission] of permissions) {
+      if (!checkAuthorization(objectId, permission)) {
+        return false
+      }
+    }
+
+    return true
+  } finally {
+    // Free the global variables.
+    permissionsByObject = getObject = null
+  }
+}

packages/xo-acl-resolver/src/index.spec.js

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+/* eslint-env mocha */
+
+import expect from 'must'
+
+// ===================================================================
+
+import myLib from './'
+
+// ===================================================================
+
+describe.skip('myLib', () => {
+  it('does something', () => {
+    // TODO: some real tests.
+
+    expect(myLib).to.exists()
+  })
+})