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98 lines
No EOL
2.8 KiB
CoffeeScript
98 lines
No EOL
2.8 KiB
CoffeeScript
###
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Dynamic Modules
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===============
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> Compiles CoffeeScript modules and loads JS modules in a VM, together
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> with only a few allowed node.js modules.
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###
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# **Loads Modules:**
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# - Node.js Modules: [vm](http://nodejs.org/api/vm.html) and
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# [events](http://nodejs.org/api/events.html)
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vm = require 'vm'
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needle = require 'needle'
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# - External Modules: [coffee-script](http://coffeescript.org/),
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# [cryptico](https://github.com/wwwtyro/cryptico)
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cs = require 'coffee-script'
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cryptico = require 'my-cryptico'
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###
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Module call
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-----------
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Initializes the dynamic module handler.
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@param {Object} args
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###
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exports = module.exports = ( args ) =>
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@log = args.logger
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# FIXME this can't come through the arguments
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if not @strPublicKey and args[ 'keygen' ]
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passPhrase = args[ 'keygen' ]
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numBits = 1024
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@oPrivateRSAkey = cryptico.generateRSAKey passPhrase, numBits
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@strPublicKey = cryptico.publicKeyString @oPrivateRSAkey
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@log.info "Public Key generated: #{ @strPublicKey }"
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# plainText = "Matt, I need you to help me with my Starcraft strategy."
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# oEncrypted = cryptico.encrypt plainText, strPublicKey
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# console.log oEncrypted.cipher
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# oDecrypted = cryptico.decrypt oEncrypted.cipher, oPrivateRSAkey
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# console.log oDecrypted.plaintext
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module.exports
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exports.getPublicKey = () =>
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@strPublicKey
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###
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Try to run a JS module from a string, together with the
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given parameters. If it is written in CoffeeScript we
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compile it first into JS.
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@public compileString ( *src, id, params, lang* )
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@param {String} src
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@param {String} id
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@param {Object} params
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@param {String} lang
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###
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exports.compileString = ( src, userId, modId, params, lang ) =>
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answ =
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code: 200
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message: 'Successfully compiled'
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if lang is 'CoffeeScript'
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try
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src = cs.compile src
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catch err
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answ.code = 400
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answ.message = 'Compilation of CoffeeScript failed at line ' +
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err.location.first_line
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#FIXME not log but debug module is required to provide information to the user
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sandbox =
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id: userId + '.' + modId + '.vm'
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params: params
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needle: needle
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log: console.log
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# console: console #TODO remove!
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exports: {}
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#TODO child_process to run module!
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#Define max runtime per loop as 10 seconds, after that the child will be killed
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#it can still be active after that if there was a timing function or a callback used...
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#kill the child each time? how to determine whether there's still a token in the module?
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try
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vm.runInNewContext src, sandbox, sandbox.id
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# TODO We should investigate memory usage and garbage collection (global.gc())?
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# Start Node with the flags —nouse_idle_notification and —expose_gc, and then when you want to run the GC, just call global.gc().
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catch err
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answ.code = 400
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answ.message = 'Loading Module failed: ' + err.message
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ret =
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answ: answ
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module: sandbox.exports
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ret |