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LambdaMOO with multiple inheritance, HTTP support, JSON <-> MOO parsing/generation, better crypto, and (eventually) a RESTful interface.
GunioRobot/stunt
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Read `README.lambdamoo' for general information on LambdaMOO. More information on Stunt is available here: http://207.210.101.162/. This is release 7 of the Stunt extensions to the LambdaMOO server. It is based on wrog's "1.8.4" version from SourceForge. Read the very important WARNING below before running this on your existing database!! Stunt includes the following functionality not found in the main server: 1) Multiple-Inheritance `create()' now takes either an object number or a list of object numbers in the first argument position. Two new built-ins, `parents()' and `chparents()', manipulate an object's parents. The built-ins `parent()' and `chparent()' exist for backward compatibility -- when an object has multiple parents these built-ins operate on the first parent. 2) Task Local Storage The built-ins `task_local' and `set_task_local' retrieve/store a task local value. 3) Map Datatype The server includes a native map datatype based on a binary search tree (specifically, a red-black tree). The implementation allows in-order traversal, efficient lookup/insertion/deletion, and supports existing MOO datatypes as values (keys may not be lists or maps). 4) JSON Parsing/Generation The built-ins `parse_json' and `generate_json' transform MOO datatypes from/to JSON. 5) New Built-in Cryptographic Operations The new cryptographic operations include SHA-1 and SHA-256 hashes. The existing MD5 hash algorithm is broken from a cryptographic standpoint, as is SHA-1 -- both are included for interoperability with existing applications (both are still popular) but the default for `string_hash'/`binary_hash'/`value_hash' is now SHA-256. Stunt also includes the HMAC-SHA-256 algorithm for generating secure, hash- based message authentication codes. 6) Built-in Base64 Encoding/Decoding The built-ins `encode_base64' and `decode_base64' encode and decode Base64-encoded strings. 7) An Improved FileIO Patch The 1.5p1 patch that is in wide circulation has flaws, including two server crashing bugs. This patch fixes those bugs/flaws without changing the API. 8) Secure Suspending Process Exec The exec functionality adds an `exec' built-in which securely forks/execs an external executable. It doesn't use the `system()' call, which is hard to secure and which blocks the server. `exec()' takes two parameters, a list of strings comprising the program and its arguments, and a MOO binary string that is sent to stdin. It suspends the current task so the server can continue serving other tasks, and eventually returns the process termination code, stdout, and stderr in a list. 9) Verb Calls on Primitive Types The server supports verbs calls on primitive types (numbers, strings, etc.) so calls like `"foo bar":split()' can be implemented and work as expected (they were always syntactically correct but resulted in an E_TYPE error). Verbs are implemented on prototype object delegates ($int_proto, $float_proto, $str_proto, etc.). The server transparently invokes the correct verb on the appropriate prototype -- the primitive value is the value of `this'. 10) In Server HTTP Parsing The server uses the excellent Node HTTP parsing library to natively parse HTTP requests and responses into key/value pairs in a map datatype. The parser handles corner cases correctly and supports things like HTTP upgrade (for using WebSockets, for example). It's also much much faster than parsers implemented in MOO code. 11) Testing Framework The server includes a unit testing framework based on Ruby's Test-Unit. It includes a Parslet parser (two, actually) for turning moo-code values into Ruby values, which makes writing tests much easier. The new code is covered very well by the existing tests. WARNING: This server changes the database format in a non-backward compatible way in order to persist multiple-parent relationships. The server will automatically upgrade version 4 databases, however THERE IS NO WAY BACK! Use Github and the Github issue system for feedback and bugs! Todd
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LambdaMOO with multiple inheritance, HTTP support, JSON <-> MOO parsing/generation, better crypto, and (eventually) a RESTful interface.
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