libdot: Implement common array helper functions

Introduces a collection of helper functions for (typed) arrays under
lib.array. Some of the functions have been extracted from existing
nassh code.

The new functions are:

* arrayBigEndianToUint32: Convert an array of four unsigned bytes into
   an unsigned 32-bit integer (big endian).
* uint32ToArrayBigEndian: Convert an unsigned 32-bit integer into an
   array of four unsigned bytes (big endian).
* concatTyped: Concatenate an arbitrary number of typed arrays of the
   same type into a new typed array of this type.
* compare: Compare two array-like objects entrywise.

BUG=chromium:712699
Change-Id: I13000ab571e26d0ce417e51fc059fe5d507d683e
Reviewed-on: https://chromium-review.googlesource.com/569158
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
9 files changed
tree: bccb0f23781fa4b9bd54f44c10f89f29b2114b0f
  1. hterm/
  2. libdot/
  3. nassh/
  4. saltpig/
  5. ssh_client/
  6. wam/
  7. wash/
  8. .gitignore
  9. HACK.md
  10. LICENSE
  11. package.json
  12. README.md
README.md

Hello

This repository contains the libdot JavaScript library and some web applications that make use of it.

The official copy of this repository is hosted at https://chromium.googlesource.com/apps/libapps.

There is also a mirror on github at https://github.com/libapps/libapps-mirror. Keep in mind that this mirror may occasionally be behind the official repository.

All changes must go through the Gerrit code review server on https://chromium-review.googlesource.com. Github pull requests cannot be accepted. Please see the HACK.md document in this directory for the details.

Top level directories

  • libdot/ is a small set of JS libraries initially developed as part of hterm, now available as shared code. It provides a base layer for web applications. The code is intended to work in any modern browser, in either a plain web page or a “privileged” environment such as a Chrome platform application or Firefox extension. In practice, it's only been put to use in Chrome platform applications so far.

  • hterm/ is a JS library that provides a terminal emulator. It is reasonably fast, reasonably correct, and reasonably portable across browsers.

  • nassh/ is the Secure Shell Chrome App (currently a “v1.5” app, soon to become a “v2” or platform app) that combines hterm with a NaCl build of OpenSSH to provide a PuTTY-like app for Chrome users.

  • ssh_client/ is the NaCl port of OpenSSH. It is used by nassh to create the Secure Shell App.

  • wash/ is a library for cross-origin virtual filesystems, similar to the Plan 9 filesystem. This directory also contains a simple bash-like shell environment for exploring these filesystems. The code in this directory is a work-in-progress.