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iamfast

v0.2.2

Published

AWS IAM policy generation from code

Downloads

4

Readme

iamfast

:construction: EXPERIMENTAL :construction:

IAM policy generation from application code

Installation

npm i -g iamfast

You can also install iamfast as a Visual Studio Code extension.

Usage

Execute iamfast with the first argument being the file or directory (currently slow, not yet recommended) to be scanned.

iamfast yourfile.js

iamfast supports the following programming languages:

  • JavaScript (v2 SDK)
  • Python 3 (Boto3 SDK)
  • Go (v1 SDK)
  • Java (v2 SDK)

Optional Flags

--format <type>: Sets the format of the output, currently supporting json (default), yaml, hcl and sam (experimental)

Example

> cat tests/js/test1.js
// Load the AWS SDK for Node.js
var AWS = require('aws-sdk');
// Set the region 
AWS.config.update({region: 'us-east-1'});

// Create the DynamoDB service object
var ddb = new AWS.DynamoDB({apiVersion: '2012-08-10'});

var params = {
  TableName: 'CUSTOMER_LIST',
  Item: {
    'CUSTOMER_ID' : {N: '001'},
    'CUSTOMER_NAME' : {S: 'Richard Roe'}
  }
};

// Call DynamoDB to add the item to the table
ddb.putItem(params, function(err, data) {
  if (err) {
    console.log("Error", err);
  } else {
    console.log("Success", data);
  }
});
> iamfast tests/js/test1.js
{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "dynamodb:PutItem",
            "Resource": [
                "arn:aws:dynamodb:us-east-1:123456789012:table/CUSTOMER_LIST"
            ]
        }
    ]
}

Test

To run tests:

npm test

Development Progress

General

  • [ ] Gather test cases
  • [ ] Environment variable referencing in SAM output
  • [ ] Online tool for quick evaluation
  • [ ] GitHub app

JavaScript

  • [x] Lexing & parsing with ANTLR
  • [x] Custom tree walker
  • [x] Identify standard SDK definitions
  • [ ] Identify advanced SDK definitions
  • [x] Identify client instantiations
  • [x] Identify client calls
  • [ ] Identify client calls with advanced method chaining
  • [x] Identify resource instantiations (AWS.S3.ManagedUpload, AWS.DynamoDB.DocumentClient)
  • [x] Identify resource calls
  • [x] Interpret call arguments (top-level, static)
  • [x] Interpret call arguments (top-level, variable)
  • [ ] Interpret call arguments (deep, static)
  • [ ] Interpret call arguments (deep, variable)
  • [ ] Track literal variables
  • [x] Track object variables
  • [x] Track environmental variables
  • [ ] Understand scope (build the call stack)
  • [ ] Cross-file relationships
  • [ ] Understand entrypoints and code accessibility
  • [ ] Performance tuning

Python

  • [x] Lexing & parsing with ANTLR
  • [x] Custom tree walker
  • [x] Identify standard SDK definitions
  • [x] Identify advanced SDK definitions ("as x" etc.)
  • [x] Identify client instantiations
  • [x] Identify client calls
  • [ ] Identify client calls with advanced method chaining
  • [x] Identify resource instantiations
  • [x] Identify resource calls
  • [x] Interpret call arguments (top-level, static)
  • [ ] Interpret call arguments (top-level, variable)
  • [ ] Interpret call arguments (deep, static)
  • [ ] Interpret call arguments (deep, variable)
  • [ ] Track literal variables
  • [ ] Track object variables
  • [ ] Track environmental variables
  • [ ] Understand scope (build the call stack)
  • [ ] Cross-file relationships
  • [ ] Understand entrypoints and code accessibility
  • [ ] Performance tuning

Go

  • [x] Lexing & parsing with ANTLR
  • [x] Custom tree walker
  • [x] Identify standard SDK definitions
  • [ ] Identify advanced SDK definitions
  • [x] Identify client instantiations
  • [x] Identify client calls
  • [ ] Identify client calls with advanced method chaining
  • [x] Interpret call arguments (top-level, static)
  • [ ] Interpret call arguments (top-level, variable)
  • [ ] Interpret call arguments (deep, static)
  • [ ] Interpret call arguments (deep, variable)
  • [x] Track literal variables
  • [ ] Track object variables
  • [ ] Track environmental variables
  • [ ] Understand scope (build the call stack)
  • [ ] Cross-file relationships
  • [ ] Understand entrypoints and code accessibility
  • [ ] Performance tuning

Java

  • [x] Lexing & parsing with ANTLR
  • [x] Custom tree walker
  • [x] Identify standard SDK definitions
  • [ ] Identify advanced SDK definitions
  • [x] Identify client instantiations
  • [x] Identify client calls
  • [ ] Identify client calls with advanced method chaining
  • [ ] Interpret call arguments (top-level, static)
  • [ ] Interpret call arguments (top-level, variable)
  • [ ] Interpret call arguments (deep, static)
  • [ ] Interpret call arguments (deep, variable)
  • [ ] Track literal variables
  • [ ] Track object variables
  • [ ] Track environmental variables
  • [ ] Understand scope (build the call stack)
  • [ ] Cross-file relationships
  • [ ] Understand entrypoints and code accessibility
  • [ ] Performance tuning

C++

  • [x] Lexing & parsing with ANTLR
  • [x] Custom tree walker
  • [x] Identify standard SDK definitions
  • [ ] Identify advanced SDK definitions
  • [x] Identify client instantiations
  • [x] Identify client calls
  • [ ] Identify client calls with advanced method chaining
  • [ ] Interpret call arguments (top-level, static)
  • [ ] Interpret call arguments (top-level, variable)
  • [ ] Interpret call arguments (deep, static)
  • [ ] Interpret call arguments (deep, variable)
  • [ ] Track literal variables
  • [ ] Track object variables
  • [ ] Track environmental variables
  • [ ] Understand scope (build the call stack)
  • [ ] Cross-file relationships
  • [ ] Understand entrypoints and code accessibility
  • [ ] Performance tuning