Commit graph

11 commits

Author SHA1 Message Date
David Baker
602c00a8d6 Dual-build wasm and asm.js olm 2018-10-04 20:09:54 +01:00
David Baker
263b94428a Another day, another interface
Change the interface again, hopefully this time a bit more normal.
Now we wrap the emscripten module completely and just expose the
high level objects.

The olm library export is now imported as normal (ie. returns
a module rather than a function returning a module) but has an
`init` method which *must* be called. This returns a promise
which resolves when the module is ready. It also rejects if the
module failed to set up, unlike before (and unlike the
promise-not-a-promise that emscripten returns).

Generally catch failures to init the module.
2018-09-25 17:13:29 +01:00
David Baker
5e87db615a Make OLM_OPTIONS work again
The closure compiler was just renaming the variable so it never
would have picked them up. Make it an extern so it knows what to do.
2018-09-21 16:35:17 +01:00
David Baker
122867c45c WebAssembly support!
Quite a lot going on in this PR:
 * Updates to support recent emscripten, switching to WASM which is now the default
 * Use emscripten's MODULARIZE option rather than wrapping it ourself, since doing
   so in pre-post js doesn't work anymore.
 * Most changes are moving the emscripten runtime functions to top-level
   calls rather than in the Module object.
 * Get rid of duplicated NULL_BYTE_PADDING_LENGTH
 * Fix ciphertext_length used without being declared
 * Fix things that caused the closure compiler to error, eg. using
   OLM_OPTIONS without a declaration.
 * Wait until module is inited to do OLM_ERROR = olm_error()

The main BREAKING CHANGE here is that the module now needs to initialise
asyncronously (because it has to load the wasm file). require()ing olm
now gives a function which needs to be called to create an instance.
The resulting object has a promise-like then() method that can be used
to detect when the module is ready. (We could use MODULARIZE_INSTANCE
to return the module directly as before, rather than the function,
but then we don't get the .then() method).
2018-09-21 16:01:51 +01:00
Richard van der Hoff
51b141ecb6 Let apps override emscripten settings
Read settings from OLM_OPTIONS to allow apps to configure some options. In
particular, this is useful for setting the heap size.
2016-12-14 11:46:12 +00:00
Richard van der Hoff
1bf807bf33 Better handling of exceptions during loading
If we get an exception during load, don't define half of window.Olm (which
confuses apps).

This is a partial fix to https://github.com/vector-im/riot-web/issues/2726.
2016-12-12 16:52:03 +00:00
Richard van der Hoff
a5fe3f605a Fix a console error when importing in a browser
something about 'global' not defined
2015-12-02 14:06:01 +00:00
Mark Haines
5a60e543a5 Add more workarounds for closure compiler in javascript bindings 2015-07-21 14:30:46 +01:00
Mark Haines
f0bb8e03b3 More fixes to the javascript bindings to get them to behave with browserify 2015-07-20 16:33:45 +01:00
Mark Haines
bede3a8499 Tweak the javascript bindings so that they will work with Node.js 2015-07-14 16:45:00 +01:00
Matthew Hodgson
09d4125ff1 Rename axolotlpp as olm to avoid confusion with Axolotl-the-spec and Axolotl-the-OWS-libraries at moxie's request 2015-06-27 01:15:23 +02:00