Mostly because the standard emscripten docker image does not have
libjson-perl, but python always comes with json. But also because
it was impenetrable.
Change interface to allow the app to get the private part of the
key and instantiate a decryption object from just the private part
of the key.
Changes the function generating a key from random bytes to be
initialising a key with a private key (because it's exactly the
same thing). Exports & imports private key parts as ArrayBuffer at
JS level rather than base64 assuming we are moving that way in
general.
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.
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).
This patch adds the ability to build the bindings without having a
globally installed Olm C library.
Provided that the C library is already built, the tests can be run now
with make test.
Signed-off-by: Damir Jelić <poljar@termina.org.uk>
This commit imports the python bindings from:
https://github.com/poljar/python-olm
The bindings are imported at commit c44b145818520d69eaaa350fb95afcb846125e0f
Minor modifications were made while importing:
- Removed travis config
- Removed Arch Linux PKGBUILD
- Removed the html docs, they can be rebuild by running make html in
the docs folder
- Slightly modified the README
The new bindings feature some improvements over the old ones:
- Python 2 and 3 support
- Automatic memory management
- Automatic memory clearing before it is freed
- Type signatures via the python typing module
- Full test coverage
- Properties are utilized where it makes sense (e.g. account.id)
Signed-off-by: Damir Jelić <poljar@termina.org.uk>
