Fix listings and session print

Hello,

Setuptools 69.0.0 deprecated a bunch stuff leading to a nasty errors during install.

> File "/tmp/pip-build-env-w815o5v3/overlay/lib/python3.11/site-packages/setuptools/config/_apply_pyprojecttoml.py", line 183, in _license
>          _set_config(dist, "license", val["text"])
>                                       ~~~^^^^^^^^
> KeyError: 'text'
> [end of output]

__version__.py wasn't used anywhere except setup.py so removing and setting it all pyproject.toml is safe.

During this decided to move as much as I could out of setup.py, zip-safe has been obsolete for modern setuptools installation methods so dropped it.

From c0be008217350f03de7f856866a402d95b5db2a3 Mon Sep 17 00:00:00 2001
From: Alfred Wingate <parona@protonmail.com>
Date: Tue, 21 Nov 2023 15:13:35 +0200
Subject: [PATCH] Move metadata to project.toml

* Setuptools 69.0.0 deprecated a slew of old style configurations.

Signed-off-by: Alfred Wingate <parona@protonmail.com>

.gitignore

@@ -15,6 +15,7 @@
 .ccls-cache/
 /python/.eggs
 /python/install-temp
+/result
 
 # Xcode
 build/
@@ -37,3 +38,6 @@ xcuserdata/
 *.dSYM
 Pods/
 *.xcworkspace
+
+# JetBrains tools
+.idea/

CHANGELOG.rst

@@ -1,3 +1,67 @@
+Changes in `3.2.16 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.16>`_
+===========================================================================
+
+This release includes the following changes since 3.2.15:
+
+* Fix and modernize the Python packaging (thanks to Alfred Wingate)
+
+Changes in `3.2.15 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.15>`_
+===========================================================================
+
+This release includes the following changes since 3.2.14:
+
+* Improvements to Python packaging
+  * No longer depend on ``future`` since Python 2 is no longer supported.
+  * Improve compatibility with tox 4.
+  * Add support for making standalone sdist.
+* Improvements to Nix flake (Thanks to Jon Ringer)
+  * Improve structure.
+  * Enable Darwin builds.
+* Typescript type fix.
+
+Changes in `3.2.14 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.14>`_
+===========================================================================
+
+This release includes the following changes since 3.2.13:
+
+* TypeScript type improvements.
+* Improvements to Python packaging
+* Documentation improvements.
+
+Changes in `3.2.13 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.13>`_
+===========================================================================
+
+This release includes the following changes since 3.2.12:
+
+* Fix compilation with newer versions of emscripten.
+  * The npm package is compiled with emscripten 3.1.17 to fix compatibility with
+    node 18.
+* Add py.typed to Python wheels.
+* Some documentation fixes and updates.
+* Improve the pkgconfig file.
+
+Changes in `3.2.12 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.12>`_
+===========================================================================
+
+This release includes the following changes since 3.2.11:
+
+* Expose olm_sas_calculate_mac_fixed_base64 in the bindings.
+* Allow memory to grow in wasm.  Thanks to benkuly for the suggestion.
+* Fix Python type hints.
+* Some Python build fixes.
+* Initial work on a Nix flake for building and testing.
+
+Changes in `3.2.11 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.11>`_
+===========================================================================
+
+This release includes the following changes since 3.2.10:
+
+* Fix building documentation.  Thanks to Jonas Smedegaard.  The documents
+  written in Markdown are now converted to HTML using Pandoc.
+* Add methods for getting unpublished fallback key in Objective-C binding.
+* Add public pickle/unpickle methods to Java binding.
+* Add wrapper for olm_session_describe to Java binding.  Thanks to Alex Baker.
+
 Changes in `3.2.10 <https://gitlab.matrix.org/matrix-org/olm/tags/3.2.10>`_
 ===========================================================================
 

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.4)
 
-project(olm VERSION 3.2.10 LANGUAGES CXX C)
+project(olm VERSION 3.2.16 LANGUAGES CXX C)
 
 option(OLM_TESTS "Build tests" ON)
 option(BUILD_SHARED_LIBS "Build as a shared library" ON)

Makefile

@@ -5,10 +5,9 @@ VERSION := $(MAJOR).$(MINOR).$(PATCH)
 PREFIX ?= /usr/local
 BUILD_DIR := build
 RELEASE_OPTIMIZE_FLAGS ?= -O3
-DEBUG_OPTIMIZE_FLAGS ?= -g -O0
+DEBUG_OPTIMIZE_FLAGS ?= -g -O0 -U_FORTIFY_SOURCE
 JS_OPTIMIZE_FLAGS ?= -O3
 FUZZER_OPTIMIZE_FLAGS ?= -O3
-CC = gcc
 EMCC = emcc
 EMAR = emar
 AR = ar
@@ -31,7 +30,7 @@ JS_ASMJS_TARGET := javascript/olm_legacy.js
 WASM_TARGET := $(BUILD_DIR)/wasm/libolm.a
 
 JS_EXPORTED_FUNCTIONS := javascript/exported_functions.json
-JS_EXPORTED_RUNTIME_METHODS := [ALLOC_STACK]
+JS_EXPORTED_RUNTIME_METHODS := [ALLOC_STACK,writeAsciiToMemory,intArrayFromString,UTF8ToString,stringToUTF8]
 JS_EXTERNS := javascript/externs.js
 
 PUBLIC_HEADERS := include/olm/olm.h include/olm/outbound_group_session.h include/olm/inbound_group_session.h include/olm/pk.h include/olm/sas.h include/olm/error.h include/olm/olm_export.h
@@ -94,7 +93,7 @@ LDFLAGS += -Wall -Werror
 CFLAGS_NATIVE = -fPIC
 CXXFLAGS_NATIVE = -fPIC
 
-EMCCFLAGS = --closure 1 --memory-init-file 0 -s NO_FILESYSTEM=1 -s INVOKE_RUN=0 -s MODULARIZE=1
+EMCCFLAGS = --closure 1 --memory-init-file 0 -s NO_FILESYSTEM=1 -s INVOKE_RUN=0 -s MODULARIZE=1 -Wno-error=closure
 
 # Olm generally doesn't need a lot of memory to encrypt / decrypt its usual
 # payloads (ie. Matrix messages), but we do need about 128K of heap to encrypt
@@ -104,7 +103,7 @@ EMCCFLAGS = --closure 1 --memory-init-file 0 -s NO_FILESYSTEM=1 -s INVOKE_RUN=0
 # (This can't be changed by the app with wasm since it's baked into the wasm).
 # (emscripten also mandates at least 16MB of memory for asm.js now, so
 # we don't use this for the legacy build.)
-EMCCFLAGS_WASM += -s TOTAL_STACK=65536 -s TOTAL_MEMORY=262144
+EMCCFLAGS_WASM += -s TOTAL_STACK=65536 -s TOTAL_MEMORY=262144 -s ALLOW_MEMORY_GROWTH
 
 EMCCFLAGS_ASMJS += -s WASM=0
 

OLMKit.podspec

@@ -3,7 +3,7 @@ Pod::Spec.new do |s|
   # The libolm version
   MAJOR = 3
   MINOR = 2
-  PATCH = 10
+  PATCH = 16
 
   s.name         = "OLMKit"
   s.version      = "#{MAJOR}.#{MINOR}.#{PATCH}"

Package.swift

@@ -2,7 +2,7 @@
 
 import PackageDescription
 
-let major = 3, minor = 2, patch = 10
+let major = 3, minor = 2, patch = 16
 
 let package = Package(
     name: "Olm",

README.md

@@ -9,6 +9,69 @@ The specification of the Olm ratchet can be found in [docs/olm.md](docs/olm.md).
 This library also includes an implementation of the Megolm cryptographic
 ratchet, as specified in [docs/megolm.md](docs/megolm.md).
 
+## Installing
+
+### Linux and other Unix-like systems
+
+Your distribution may have pre-compiled packages available.  If not, or if you
+need a newer version, you will need to compile from source.  See the "Building"
+section below for more details.
+
+### macOS
+
+The easiest way to install on macOS is via Homebrew.  If you do not have
+Homebrew installed, follow the instructions at https://brew.sh/ to install it.
+
+You can then install libolm by running
+
+```bash
+brew install libolm
+```
+
+If you also need the Python packages, you can run
+
+```bash
+pip3 install python-olm --global-option="build_ext" --global-option="--include-dirs="`brew --prefix libolm`"/include" --global-option="--library-dirs="`brew --prefix libolm`"/lib"
+```
+
+Note that this will install an older version of the Python bindings, which may
+be missing some functions.  If you need the latest version, you will need to
+build from source.
+
+### Windows
+
+You will need to build from source.  See the "Building" section below for more
+details.
+
+### Bindings
+
+#### JavaScript
+
+You can use pre-built npm packages, available at
+<https://gitlab.matrix.org/matrix-org/olm/-/packages?type=npm>.
+
+#### Python
+
+A Python source package and pre-built packages for certain architectures from
+<https://pypi.org/project/python-olm/>.  If a pre-built package is not
+available for your architecture, you will need:
+
+- cmake (recommended) or GNU make
+- a C/C++ compiler
+
+to build the source package.
+
+You can then run `pip install python-olm`.
+
+Currently, we try to provide packages for all supported versions of Python on
+x86-64, i686, and aarch64, but we cannot guarantee that packages for all
+versions will be available on all architectures.
+
+#### Android
+
+Pre-built Android bindings are available at
+<https://gitlab.matrix.org/matrix-org/olm/-/packages?type=Maven>.
+
 ## Building
 
 To build olm as a shared library run:
@@ -41,22 +104,38 @@ target_link_libraries(my_exe Olm::Olm)
 
 ### Bindings
 
-To build the JavaScript bindings, install emscripten from https://emscripten.org/ and then run:
+#### JavaScript
+
+The recommended way to build the JavaScript bindings is using
+[Nix](https://nixos.org/).  With Nix, you can run
+
+```bash
+nix build .\#javascript
+```
+
+to build the bindings.
+
+If you do not have Nix you can, install emscripten from https://emscripten.org/
+and then run:
 
 ```bash
 make js
 ```
 
-Note that if you run emscripten in a docker container, you need to pass through
+Emscripten can also be run via Docker, in which case, you need to pass through
 the EMCC_CLOSURE_ARGS environment variable.
 
+#### Android
+
 To build the android project for Android bindings, run:
 
 ```bash
 cd android
-./gradlew clean assembleRelease
+./gradlew clean build
 ```
 
+#### Objective-C
+
 To build the Xcode workspace for Objective-C bindings, run:
 
 ```bash
@@ -65,7 +144,9 @@ pod install
 open OLMKit.xcworkspace
 ```
 
-To build the Python bindings, first build olm as a shared library as above, and
+#### Python
+
+To build the Python 3 bindings, first build olm as a library as above, and
 then run:
 
 ```bash
@@ -73,9 +154,6 @@ cd python
 make
 ```
 
-to make both the Python 2 and Python 3 bindings.  To make only one version, use
-``make olm-python2`` or ``make olm-python3`` instead of just ``make``.
-
 ### Using make instead of cmake
 
 **WARNING:** Using cmake is the preferred method for building the olm library;
@@ -119,7 +197,7 @@ repository, some bindings are (in alphabetical order):
 - [nim-olm](https://codeberg.org/BarrOff/nim-olm) (MIT) Nim bindings
 - [olm-sys](https://gitlab.gnome.org/BrainBlasted/olm-sys) (Apache-2.0) Rust
   bindings
-- [Trixnity](https://gitlab.com/benkuly/trixnity) (AGPLv3) Kotlin SDK for
+- [Trixnity](https://gitlab.com/trixnity/trixnity) (Apache-2.0) Kotlin SDK for
   Matrix, including Olm bindings
 
 Note that bindings may have a different license from libolm, and are *not*
@@ -128,7 +206,7 @@ endorsed by the Matrix.org Foundation C.I.C.
 ## Release process
 
 First: bump version numbers in ``common.mk``, ``CMakeLists.txt``,
-``javascript/package.json``, ``python/olm/__version__.py``, ``OLMKit.podspec``,
+``javascript/package.json``, ``python/pyproject.toml``, ``OLMKit.podspec``,
 ``Package.swift``, and ``android/gradle.properties``.
 
 Also, ensure the changelog is up to date, and that everything is committed to

Windows64.cmake

@@ -11,8 +11,8 @@
 SET(CMAKE_SYSTEM_NAME Windows)
 
 # which compilers to use for C and C++
-SET(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
-SET(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
+SET(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc-posix)
+SET(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++-posix)
 SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
 
 # here is the target environment located

android/gradle.properties

@@ -26,7 +26,7 @@ org.gradle.configureondemand=false
 # Ref: https://github.com/vanniktech/gradle-maven-publish-plugin
 GROUP=org.matrix.android
 POM_ARTIFACT_ID=olm
-VERSION_NAME=3.2.10
+VERSION_NAME=3.2.16
 
 POM_PACKAGING=aar
 

android/olm-sdk/src/main/java/org/matrix/olm/OlmInboundGroupSession.java

@@ -369,4 +369,29 @@ public class OlmInboundGroupSession extends CommonSerializeUtils implements Seri
      * @return the deserialized session
      **/
     private native long deserializeJni(byte[] aSerializedData, byte[] aKey);
+
+    /**
+     * Return a pickled inbound group session as a bytes buffer.<br>
+     * The session is serialized and encrypted with aKey.
+     * In case of failure, an error human readable
+     * description is provide in aErrorMsg.
+     * @param aKey encryption key
+     * @param aErrorMsg error message description
+     * @return the pickled inbound group session as bytes buffer
+     */
+    public byte[] pickle(byte[] aKey, StringBuffer aErrorMsg) {
+        return serialize(aKey, aErrorMsg);
+    }
+
+    /**
+     * Loads an inbound group session from a pickled bytes buffer.<br>
+     * See {@link #serialize(byte[], StringBuffer)}
+     * @param aSerializedData bytes buffer
+     * @param aKey key used to encrypted
+     * @exception Exception the exception
+     */
+    public void unpickle(byte[] aSerializedData, byte[] aKey) throws Exception {
+        deserialize(aSerializedData, aKey);
+    }
+
 }

android/olm-sdk/src/main/java/org/matrix/olm/OlmOutboundGroupSession.java

@@ -293,4 +293,28 @@ public class OlmOutboundGroupSession extends CommonSerializeUtils implements Ser
      **/
     private native long deserializeJni(byte[] aSerializedData, byte[] aKey);
 
+    /**
+     * Return a pickled outbound group session as a bytes buffer.<br>
+     * The session is serialized and encrypted with aKey.
+     * In case of failure, an error human readable
+     * description is provide in aErrorMsg.
+     * @param aKey encryption key
+     * @param aErrorMsg error message description
+     * @return the pickled outbound group session as bytes buffer
+     */
+    public byte[] pickle(byte[] aKey, StringBuffer aErrorMsg) {
+        return serialize(aKey, aErrorMsg);
+    }
+
+    /**
+     * Loads an outbound group session from a pickled bytes buffer.<br>
+     * See {@link #serialize(byte[], StringBuffer)}
+     * @param aSerializedData bytes buffer
+     * @param aKey key used to encrypted
+     * @exception Exception the exception
+     */
+    public void unpickle(byte[] aSerializedData, byte[] aKey) throws Exception {
+        deserialize(aSerializedData, aKey);
+    }
+
 }

android/olm-sdk/src/main/java/org/matrix/olm/OlmSAS.java

@@ -106,6 +106,16 @@ public class OlmSAS {
         return null;
     }
 
+    public String calculateMacFixedBase64(String message, String info) throws OlmException {
+        try {
+            byte[] bytes = calculateMacFixedBase64Jni(message.getBytes("UTF-8"), info.getBytes("UTF-8"));
+            if (bytes != null) return new String(bytes, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            throw new OlmException(OlmException.EXCEPTION_CODE_SAS_ERROR, e.getMessage());
+        }
+        return null;
+    }
+
     public String calculateMacLongKdf(String message, String info) throws OlmException {
         try {
             byte[] bytes = calculateMacLongKdfJni(message.getBytes("UTF-8"), info.getBytes("UTF-8"));
@@ -140,6 +150,8 @@ public class OlmSAS {
 
     private native byte[] calculateMacJni(byte[] message, byte[] info);
 
+    private native byte[] calculateMacFixedBase64Jni(byte[] message, byte[] info);
+
     private native byte[] calculateMacLongKdfJni(byte[] message, byte[] info);
 
     /**

android/olm-sdk/src/main/java/org/matrix/olm/OlmSession.java

@@ -465,5 +465,30 @@ public class OlmSession extends CommonSerializeUtils implements Serializable {
      * @return the deserialized session
      **/
     private native long deserializeJni(byte[] aSerializedData, byte[] aKey);
+
+    /**
+     * Return a pickled session as a bytes buffer.<br>
+     * The session is serialized and encrypted with aKey.
+     * In case of failure, an error human readable
+     * description is provide in aErrorMsg.
+     * @param aKey encryption key
+     * @param aErrorMsg error message description
+     * @return the pickled session as bytes buffer
+     */
+    public byte[] pickle(byte[] aKey, StringBuffer aErrorMsg) {
+        return serialize(aKey, aErrorMsg);
+    }
+
+    /**
+     * Loads a session from a pickled bytes buffer.<br>
+     * See {@link #serialize(byte[], StringBuffer)}
+     * @param aSerializedData bytes buffer
+     * @param aKey key used to encrypted
+     * @exception Exception the exception
+     */
+    public void unpickle(byte[] aSerializedData, byte[] aKey) throws Exception {
+        deserialize(aSerializedData, aKey);
+    }
+
 }
 

android/olm-sdk/src/main/jni/olm_sas.cpp

@@ -309,6 +309,86 @@ JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(calculateMacJni)(JNIEnv *env, jobject thiz
     return returnValue;
 }
 
+JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(calculateMacFixedBase64Jni)(JNIEnv *env, jobject thiz,jbyteArray messageBuffer,jbyteArray infoBuffer) {
+    LOGD("## calculateMacFixedBase64Jni(): IN");
+    const char* errorMessage = NULL;
+    jbyteArray returnValue = 0;
+    OlmSAS* sasPtr = getOlmSasInstanceId(env, thiz);
+
+    jbyte *messagePtr = NULL;
+    jboolean messageWasCopied = JNI_FALSE;
+
+    jbyte *infoPtr = NULL;
+    jboolean infoWasCopied = JNI_FALSE;
+
+    if (!sasPtr)
+    {
+        LOGE("## calculateMacFixedBase64Jni(): failure - invalid SAS ptr=NULL");
+        errorMessage = "invalid SAS ptr=NULL";
+    } else if(!messageBuffer) {
+        LOGE("## calculateMacFixedBase64Jni(): failure - invalid message");
+        errorMessage = "invalid info";
+    }
+    else if (!(messagePtr = env->GetByteArrayElements(messageBuffer, &messageWasCopied)))
+    {
+        LOGE(" ## calculateMacFixedBase64Jni(): failure - message JNI allocation OOM");
+        errorMessage = "message JNI allocation OOM";
+    }
+    else if (!(infoPtr = env->GetByteArrayElements(infoBuffer, &infoWasCopied)))
+    {
+        LOGE(" ## calculateMacFixedBase64Jni(): failure - info JNI allocation OOM");
+        errorMessage = "info JNI allocation OOM";
+    } else {
+
+        size_t infoLength = (size_t)env->GetArrayLength(infoBuffer);
+        size_t messageLength = (size_t)env->GetArrayLength(messageBuffer);
+        size_t macLength = olm_sas_mac_length(sasPtr);
+
+        void *macPtr = malloc(macLength*sizeof(uint8_t));
+
+        size_t result = olm_sas_calculate_mac_fixed_base64(sasPtr,messagePtr,messageLength,infoPtr,infoLength,macPtr,macLength);
+        if (result == olm_error())
+        {
+            errorMessage = (const char *)olm_sas_last_error(sasPtr);
+            LOGE("## calculateMacFixedBase64Jni(): failure - error calculating SAS mac Msg=%s", errorMessage);
+        }
+        else
+        {
+            returnValue = env->NewByteArray(macLength);
+            env->SetByteArrayRegion(returnValue, 0 , macLength, (jbyte*)macPtr);
+        }
+
+        if (macPtr) {
+            free(macPtr);
+        }
+    }
+
+    // free alloc
+    if (infoPtr)
+    {
+        if (infoWasCopied)
+        {
+            memset(infoPtr, 0, (size_t)env->GetArrayLength(infoBuffer));
+        }
+        env->ReleaseByteArrayElements(infoBuffer, infoPtr, JNI_ABORT);
+    }
+    if (messagePtr)
+    {
+        if (messageWasCopied)
+        {
+            memset(messagePtr, 0, (size_t)env->GetArrayLength(messageBuffer));
+        }
+        env->ReleaseByteArrayElements(messageBuffer, messagePtr, JNI_ABORT);
+    }
+
+    if (errorMessage)
+    {
+        env->ThrowNew(env->FindClass("java/lang/Exception"), errorMessage);
+    }
+
+    return returnValue;
+}
+
 JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(calculateMacLongKdfJni)(JNIEnv *env, jobject thiz,jbyteArray messageBuffer,jbyteArray infoBuffer) {
     LOGD("## calculateMacLongKdfJni(): IN");
     const char* errorMessage = NULL;

android/olm-sdk/src/main/jni/olm_sas.h

@@ -32,6 +32,7 @@ JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(getPubKeyJni)(JNIEnv *env, jobject thiz);
 JNIEXPORT void OLM_SAS_FUNC_DEF(setTheirPubKey)(JNIEnv *env, jobject thiz,jbyteArray pubKey);
 JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(generateShortCodeJni)(JNIEnv *env, jobject thiz, jbyteArray infoStringBytes, jint byteNb);
 JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(calculateMacJni)(JNIEnv *env, jobject thiz, jbyteArray messageBuffer, jbyteArray infoBuffer);
+JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(calculateMacFixedBase64Jni)(JNIEnv *env, jobject thiz, jbyteArray messageBuffer, jbyteArray infoBuffer);
 JNIEXPORT jbyteArray OLM_SAS_FUNC_DEF(calculateMacLongKdfJni)(JNIEnv *env, jobject thiz, jbyteArray messageBuffer, jbyteArray infoBuffer);
 
 #ifdef __cplusplus

common.mk

@@ -1,4 +1,4 @@
 
 MAJOR := 3
 MINOR := 2
-PATCH := 10
+PATCH := 16

docs/megolm.md

@@ -109,7 +109,7 @@ discriminate between sessions.
 ### Sharing session data
 
 To allow other participants in the conversation to decrypt messages, the
-session data is formatted as described in [Session-sharing format](#Session-sharing-format). It is then
+session data is formatted as described in [Session-sharing format](#session-sharing-format). It is then
 shared with other participants in the conversation via a secure peer-to-peer
 channel (such as that provided by [Olm][]).
 
@@ -182,9 +182,13 @@ but the decision of which ratchet states to cache is left to the application.
 
 ## Data exchange formats
 
-### Session-sharing format
+### Session sharing format
 
-The Megolm key-sharing format is as follows:
+This format is used for the initial sharing of a Megolm session with other
+group participants who need to be able to read messages encrypted by this
+session.
+
+The session sharing format is as follows:
 
 ```
 +---+----+--------+--------+--------+--------+------+-----------+
@@ -202,6 +206,33 @@ part of the Ed25519 keypair $`K`$.
 The data is then signed using the Ed25519 keypair, and the 64-byte signature is
 appended.
 
+### Session export format
+
+Once the session is initially shared with the group participants, each
+participant needs to retain a copy of the session if they want to maintain
+their ability to decrypt messages encrypted with that session.
+
+For forward-secrecy purposes, a participant may choose to store a ratcheted
+version of the session. But since the ratchet index is covered by the
+signature, this would invalidate the signature. So we define a similar format,
+called the *session export format*, which is identical to the [session sharing
+format](#session-sharing-format) except for dropping the signature.
+
+The Megolm session export format is thus as follows:
+
+```
++---+----+--------+--------+--------+--------+------+
+| V | i  | R(i,0) | R(i,1) | R(i,2) | R(i,3) | Kpub |
++---+----+--------+--------+--------+--------+------+
+0   1    5        37       69      101      133    165   bytes
+```
+
+The version byte, ``V``, is ``"\x01"``.
+
+This is followed by the ratchet index, $`i`$, which is encoded as a
+big-endian 32-bit integer; the ratchet values $`R_{i,j}`$; and the public
+part of the Ed25519 keypair $`K`$.
+
 ### Message format
 
 Megolm messages consist of a one byte version, followed by a variable length

flake.lock

@@ -0,0 +1,60 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1664871473,
+        "narHash": "sha256-1LzbW6G6Uz8akWiOdlIi435GAm1ct5jF5tovw/9to0o=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b7a6fde153d9470afdb6aa1da51c4117f03b84ed",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "npmlock2nix": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1654775747,
+        "narHash": "sha256-9pXHDpIjmsK5390wmpGHu9aA4QOPpegPBvThHeBlef4=",
+        "owner": "nix-community",
+        "repo": "npmlock2nix",
+        "rev": "5c4f247688fc91d665df65f71c81e0726621aaa8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "npmlock2nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "npmlock2nix": "npmlock2nix"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,40 @@
+{
+  description = "An implementation of the Double Ratchet cryptographic ratchet";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  # We can't use the current stable release because of
+  # https://github.com/emscripten-core/emscripten/issues/16913
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.npmlock2nix = {
+    url = "github:nix-community/npmlock2nix";
+    flake = false;
+  };
+
+  outputs = { self, nixpkgs, flake-utils, npmlock2nix }:
+    let
+      localOverlay = import ./nix/overlay.nix;
+      pkgsForSystem = system: import nixpkgs {
+        inherit system;
+        overlays = [
+          (final: prev: {
+            npmlock2nix = final.callPackage npmlock2nix {};
+            node_modules = final.npmlock2nix.node_modules { src = ./javascript; };
+          })
+          localOverlay
+        ];
+      };
+    in (
+      # some systems cause issues, e.g. i686-linux is unsupported by gradle,
+      # which causes "nix flake check" to fail. Investigate more later, but for
+      # now, we will just allow x86_64-linux
+      flake-utils.lib.eachSystem [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ] (system: rec {
+        legacyPackages = pkgsForSystem system;
+        checks = {
+          inherit (legacyPackages) olm-gcc-cmake olm-clang-cmake olm-gcc-make;
+        };
+        packages = {
+          javascript = legacyPackages.olm-javascript;
+        };
+      }
+    ));
+}

include/olm/list.hh

@@ -99,9 +99,9 @@ public:
             return *this;
         }
         T * this_pos = _data;
-        T * const other_pos = other._data;
+        const T * other_pos = other._data;
         while (other_pos != other._end) {
-            *this_pos = *other;
+            *this_pos = *other_pos;
             ++this_pos;
             ++other_pos;
         }

include/olm/olm_export.h

@@ -9,15 +9,15 @@
 #  ifndef OLM_EXPORT
 #    ifdef olm_EXPORTS
         /* We are building this library */
-#      define OLM_EXPORT __attribute__((visibility("default")))
+#      define OLM_EXPORT 
 #    else
         /* We are using this library */
-#      define OLM_EXPORT __attribute__((visibility("default")))
+#      define OLM_EXPORT 
 #    endif
 #  endif
 
 #  ifndef OLM_NO_EXPORT
-#    define OLM_NO_EXPORT __attribute__((visibility("hidden")))
+#    define OLM_NO_EXPORT 
 #  endif
 #endif
 

javascript/index.d.ts

@@ -18,28 +18,28 @@ export as namespace Olm;
 
 declare class Account {
     constructor();
-    free();
-    create();
+    free(): void;
+    create(): void;
     identity_keys(): string;
     sign(message: string | Uint8Array): string;
     one_time_keys(): string;
-    mark_keys_as_published();
+    mark_keys_as_published(): void;
     max_number_of_one_time_keys(): number;
-    generate_one_time_keys(number_of_keys: number);
-    remove_one_time_keys(session: Session);
-    generate_fallback_key();
+    generate_one_time_keys(number_of_keys: number): void;
+    remove_one_time_keys(session: Session): void;
+    generate_fallback_key(): void;
     fallback_key(): string;
     unpublished_fallback_key(): string;
     forget_old_fallback_key(): void;
     pickle(key: string | Uint8Array): string;
-    unpickle(key: string | Uint8Array, pickle: string);
+    unpickle(key: string | Uint8Array, pickle: string): void;
 }
 
 declare class Session {
     constructor();
     free(): void;
     pickle(key: string | Uint8Array): string;
-    unpickle(key: string | Uint8Array, pickle: string);
+    unpickle(key: string | Uint8Array, pickle: string): void;
     create_outbound(
         account: Account, their_identity_key: string, their_one_time_key: string,
     ): void;
@@ -51,7 +51,10 @@ declare class Session {
     has_received_message(): boolean;
     matches_inbound(one_time_key_message: string): boolean;
     matches_inbound_from(identity_key: string, one_time_key_message: string): boolean;
-    encrypt(plaintext: string): object;
+    encrypt(plaintext: string): {
+        type: 0 | 1; // 0: PreKey, 1: Message
+        body: string;
+    };
     decrypt(message_type: number, message: string): string;
     describe(): string;
 }
@@ -67,10 +70,13 @@ declare class InboundGroupSession {
     constructor();
     free(): void;
     pickle(key: string | Uint8Array): string;
-    unpickle(key: string | Uint8Array, pickle: string);
+    unpickle(key: string | Uint8Array, pickle: string): void;
     create(session_key: string): string;
     import_session(session_key: string): string;
-    decrypt(message: string): object;
+    decrypt(message: string): {
+        message_index: number;
+        plaintext: string;
+    };
     session_id(): string;
     first_known_index(): number;
     export_session(message_index: number): string;
@@ -80,7 +86,7 @@ declare class OutboundGroupSession {
     constructor();
     free(): void;
     pickle(key: string | Uint8Array): string;
-    unpickle(key: string | Uint8Array, pickle: string);
+    unpickle(key: string | Uint8Array, pickle: string): void;
     create(): void;
     encrypt(plaintext: string): string;
     session_id(): string;
@@ -92,7 +98,11 @@ declare class PkEncryption {
     constructor();
     free(): void;
     set_recipient_key(key: string): void;
-    encrypt(plaintext: string): object;
+    encrypt(plaintext: string): {
+        ciphertext: string;
+        mac: string;
+        ephemeral: string;
+    };
 }
 
 declare class PkDecryption {
@@ -121,6 +131,7 @@ declare class SAS {
     set_their_key(their_key: string): void;
     generate_bytes(info: string, length: number): Uint8Array;
     calculate_mac(input: string, info: string): string;
+    calculate_mac_fixed_base64(input: string, info: string): string;
     calculate_mac_long_kdf(input: string, info: string): string;
 }
 

javascript/olm_inbound_group_session.js

@@ -1,3 +1,4 @@
+/** @constructor */
 function InboundGroupSession() {
     var size = Module['_olm_inbound_group_session_size']();
     this.buf = malloc(size);

javascript/olm_outbound_group_session.js

@@ -1,3 +1,4 @@
+/** @constructor */
 function OutboundGroupSession() {
     var size = Module['_olm_outbound_group_session_size']();
     this.buf = malloc(size);

javascript/olm_pk.js

@@ -1,3 +1,4 @@
+/** @constructor */
 function PkEncryption() {
     var size = Module['_olm_pk_encryption_size']();
     this.buf = malloc(size);
@@ -98,6 +99,7 @@ PkEncryption.prototype['encrypt'] = restore_stack(function(
 });
 
 
+/** @constructor */
 function PkDecryption() {
     var size = Module['_olm_pk_decryption_size']();
     this.buf = malloc(size);
@@ -273,6 +275,7 @@ PkDecryption.prototype['decrypt'] = restore_stack(function (
 })
 
 
+/** @constructor */
 function PkSigning() {
     var size = Module['_olm_pk_signing_size']();
     this.buf = malloc(size);

javascript/olm_post.js

@@ -44,6 +44,7 @@ function bzero(ptr, n) {
     }
 }
 
+/** @constructor */
 function Account() {
     var size = Module['_olm_account_size']();
     this.buf = malloc(size);
@@ -244,6 +245,7 @@ Account.prototype['unpickle'] = restore_stack(function(key, pickle) {
     }
 });
 
+/** @constructor */
 function Session() {
     var size = Module['_olm_session_size']();
     this.buf = malloc(size);
@@ -530,6 +532,7 @@ Session.prototype['describe'] = restore_stack(function() {
     }
 });
 
+/** @constructor */
 function Utility() {
     var size = Module['_olm_utility_size']();
     this.buf = malloc(size);

javascript/olm_pre.js

@@ -14,7 +14,6 @@ if (typeof(window) !== 'undefined') {
         var bytes = nodeCrypto['randomBytes'](buf.length);
         buf.set(bytes);
     };
-    process = global["process"];
 } else {
     throw new Error("Cannot find global to attach library to");
 }

javascript/olm_sas.js

@@ -1,3 +1,4 @@
+/** @constructor */
 function SAS() {
     var size = Module['_olm_sas_size']();
     var random_length = Module['_olm_create_sas_random_length']();
@@ -82,6 +83,22 @@ SAS.prototype['calculate_mac'] = restore_stack(function(input, info) {
     return UTF8ToString(mac_buffer, mac_length);
 });
 
+SAS.prototype['calculate_mac_fixed_base64'] = restore_stack(function(input, info) {
+    var input_array = array_from_string(input);
+    var input_buffer = stack(input_array);
+    var info_array = array_from_string(info);
+    var info_buffer = stack(info_array);
+    var mac_length = sas_method(Module['_olm_sas_mac_length'])(this.ptr);
+    var mac_buffer = stack(mac_length + NULL_BYTE_PADDING_LENGTH);
+    sas_method(Module['_olm_sas_calculate_mac_fixed_base64'])(
+        this.ptr,
+        input_buffer, input_array.length,
+        info_buffer, info_array.length,
+        mac_buffer, mac_length
+    );
+    return UTF8ToString(mac_buffer, mac_length);
+});
+
 SAS.prototype['calculate_mac_long_kdf'] = restore_stack(function(input, info) {
     var input_array = array_from_string(input);
     var input_buffer = stack(input_array);

javascript/package-lock.json

@@ -0,0 +1,241 @@
+{
+  "name": "@matrix-org/olm",
+  "version": "3.2.11",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@matrix-org/olm",
+      "version": "3.2.11",
+      "license": "Apache-2.0",
+      "devDependencies": {
+        "jasmine": "^3.0.0"
+      }
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
+      "dev": true
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dev": true,
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "dev": true
+    },
+    "node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
+    "node_modules/glob": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.0.tgz",
+      "integrity": "sha512-lmLf6gtyrPq8tTjSmrO94wBeQbFR3HbLHbuyD69wuyQkImp2hWqMGB47OX65FBkPffO641IP9jWa1z4ivqG26Q==",
+      "dev": true,
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      },
+      "engines": {
+        "node": "*"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
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+        "once": "^1.3.0",
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+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+      "version": "3.99.0",
+      "resolved": "https://registry.npmjs.org/jasmine/-/jasmine-3.99.0.tgz",
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+      "dev": true,
+      "dependencies": {
+        "glob": "^7.1.6",
+        "jasmine-core": "~3.99.0"
+      },
+      "bin": {
+        "jasmine": "bin/jasmine.js"
+      }
+    },
+    "node_modules/jasmine-core": {
+      "version": "3.99.1",
+      "resolved": "https://registry.npmjs.org/jasmine-core/-/jasmine-core-3.99.1.tgz",
+      "integrity": "sha512-Hu1dmuoGcZ7AfyynN3LsfruwMbxMALMka+YtZeGoLuDEySVmVAPaonkNoBRIw/ectu8b9tVQCJNgp4a4knp+tg==",
+      "dev": true
+    },
+    "node_modules/minimatch": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dev": true,
+      "dependencies": {
+        "brace-expansion": "^1.1.7"
+      },
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+      }
+    },
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+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dev": true,
+      "dependencies": {
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+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
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+    }
+  },
+  "dependencies": {
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+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
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+    },
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+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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+        "concat-map": "0.0.1"
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+    },
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+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
+      "dev": true
+    },
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+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.0.tgz",
+      "integrity": "sha512-lmLf6gtyrPq8tTjSmrO94wBeQbFR3HbLHbuyD69wuyQkImp2hWqMGB47OX65FBkPffO641IP9jWa1z4ivqG26Q==",
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+      "requires": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^3.0.4",
+        "once": "^1.3.0",
+        "path-is-absolute": "^1.0.0"
+      }
+    },
+    "inflight": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
+      "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
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+        "once": "^1.3.0",
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+      }
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+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+    },
+    "jasmine": {
+      "version": "3.99.0",
+      "resolved": "https://registry.npmjs.org/jasmine/-/jasmine-3.99.0.tgz",
+      "integrity": "sha512-YIThBuHzaIIcjxeuLmPD40SjxkEcc8i//sGMDKCgkRMVgIwRJf5qyExtlJpQeh7pkeoBSOe6lQEdg+/9uKg9mw==",
+      "dev": true,
+      "requires": {
+        "glob": "^7.1.6",
+        "jasmine-core": "~3.99.0"
+      }
+    },
+    "jasmine-core": {
+      "version": "3.99.1",
+      "resolved": "https://registry.npmjs.org/jasmine-core/-/jasmine-core-3.99.1.tgz",
+      "integrity": "sha512-Hu1dmuoGcZ7AfyynN3LsfruwMbxMALMka+YtZeGoLuDEySVmVAPaonkNoBRIw/ectu8b9tVQCJNgp4a4knp+tg==",
+      "dev": true
+    },
+    "minimatch": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "dev": true,
+      "requires": {
+        "brace-expansion": "^1.1.7"
+      }
+    },
+    "once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dev": true,
+      "requires": {
+        "wrappy": "1"
+      }
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    }
+  }
+}

javascript/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@matrix-org/olm",
-  "version": "3.2.10",
+  "version": "3.2.16",
   "description": "An implementation of the Double Ratchet cryptographic ratchet",
   "main": "olm.js",
   "files": [
@@ -31,8 +31,5 @@
   "homepage": "https://gitlab.matrix.org/matrix-org/olm",
   "devDependencies": {
     "jasmine": "^3.0.0"
-  },
-  "publishConfig": {
-    "@matrix-org:registry":"https://gitlab.matrix.org/api/v4/projects/27/packages/npm/"
   }
 }

lib/crypto-algorithms/aes.h

@@ -11,13 +11,13 @@
 
 /*************************** HEADER FILES ***************************/
 #include <stddef.h>
-
+#include <stdint.h>
 /****************************** MACROS ******************************/
 #define AES_BLOCK_SIZE 16               // AES operates on 16 bytes at a time
 
 /**************************** DATA TYPES ****************************/
-typedef unsigned char BYTE;            // 8-bit byte
-typedef unsigned int WORD;             // 32-bit word, change to "long" for 16-bit machines
+typedef uint8_t BYTE;            // 8-bit byte
+typedef uint32_t WORD;             // 32-bit word, change to "long" for 16-bit machines
 
 /*********************** FUNCTION DECLARATIONS **********************/
 ///////////////////

lib/crypto-algorithms/sha256.h

@@ -11,13 +11,14 @@
 
 /*************************** HEADER FILES ***************************/
 #include <stddef.h>
+#include <stdint.h>
 
 /****************************** MACROS ******************************/
 #define SHA256_BLOCK_SIZE 32            // SHA256 outputs a 32 byte digest
 
 /**************************** DATA TYPES ****************************/
-typedef unsigned char BYTE;             // 8-bit byte
-typedef unsigned int  WORD;             // 32-bit word, change to "long" for 16-bit machines
+typedef uint8_t BYTE;             // 8-bit byte
+typedef uint32_t  WORD;             // 32-bit word, change to "long" for 16-bit machines
 
 typedef struct {
 	BYTE data[64];

lib/doctest/doctest/doctest.h

@@ -4498,7 +4498,7 @@ namespace {
             sigaltstack(&sigStack, &oldSigStack);
             struct sigaction sa = {};
             sa.sa_handler       = handleSignal; // NOLINT
-            sa.sa_flags         = SA_ONSTACK;
+            sa.sa_flags         = SS_ONSTACK;
             for(std::size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
                 sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
             }

lib/doctest/doctest/parts/doctest.cpp

@@ -1684,7 +1684,7 @@ namespace {
             sigaltstack(&sigStack, &oldSigStack);
             struct sigaction sa = {};
             sa.sa_handler       = handleSignal; // NOLINT
-            sa.sa_flags         = SA_ONSTACK;
+            sa.sa_flags         = SS_ONSTACK;
             for(std::size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
                 sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
             }

nix/overlay.nix

@@ -0,0 +1,76 @@
+final: prev: {
+  olm-gcc-cmake = prev.gccStdenv.mkDerivation {
+    name = "olm_gcc_cmake";
+
+    src = ./..;
+
+    nativeBuildInputs = [ prev.cmake ];
+    doCheck = true;
+    checkPhase = ''
+      (cd tests && ctest . -j $NIX_BUILD_CORES)
+    '';
+  };
+
+  olm-clang-cmake = prev.clangStdenv.mkDerivation {
+    name = "olm_clang_cmake";
+
+    src = ./..;
+
+    nativeBuildInputs = [ prev.cmake ];
+
+    doCheck = true;
+    checkPhase = ''
+      (cd tests && ctest . -j $NIX_BUILD_CORES)
+    '';
+  };
+
+  olm-gcc-make = prev.gccStdenv.mkDerivation {
+    name = "olm";
+
+    src = ./..;
+
+    doCheck = true;
+    makeFlags = [ "PREFIX=$out" ];
+  };
+
+  olm-javascript = final.buildEmscriptenPackage {
+    pname = "olm_javascript";
+    inherit (builtins.fromJSON (builtins.readFile ../javascript/package.json)) version;
+
+    src = ./..;
+
+    nativeBuildInputs = with prev; [ gnumake python3 nodejs ];
+
+    postPatch = ''
+      patchShebangs .
+    '';
+
+    configurePhase = false;
+
+    buildPhase = ''
+      export EM_CACHE=$TMPDIR
+      make javascript/exported_functions.json
+      make js
+    '';
+
+    installPhase = ''
+      mkdir -p $out/javascript
+      cd javascript
+      echo sha256: > checksums.txt
+      sha256sum olm.js olm_legacy.js olm.wasm >> checksums.txt
+      echo sha512: >> checksums.txt
+      sha512sum olm.js olm_legacy.js olm.wasm >> checksums.txt
+      cp package.json olm.js olm.wasm olm_legacy.js index.d.ts README.md checksums.txt $out/javascript
+      cd ..
+    '';
+
+    checkPhase = ''
+      cd javascript
+      export HOME=$TMPDIR
+      ln -s ${final.node_modules}/node_modules ./node_modules
+      npm test
+      cd ..
+    '';
+  };
+
+}

olm.pc.in

@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
-libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
 
 Name: olm
 Description: implementation of the Double Ratchet cryptographic ratchet in C++

python/.gitlab-ci.yml

@@ -34,7 +34,7 @@ test:python:
   image: docker.io/python:$PYTHON_VERSIONS
   parallel:
     matrix:
-      - PYTHON_VERSIONS: [ "3.6", "3.7", "3.8", "3.9" ]
+      - PYTHON_VERSIONS: [ "3.8", "3.9", "3.10", "3.11", "3.12" ]
   script:
     - pip install tox
     - make headers

python/MANIFEST.in

@@ -1,5 +1,3 @@
-include include/olm/olm.h
-include include/olm/pk.h
-include include/olm/sas.h
+include include/olm/*.h
 include Makefile
 include olm_build.py

python/Makefile

@@ -20,6 +20,9 @@ include/olm/error.h: include/olm/olm.h ../include/olm/error.h
 
 headers: include/olm/olm.h include/olm/pk.h include/olm/sas.h include/olm/error.h
 
+olm-python3: headers
+	DEVELOP=$(DEVELOP) python3 setup.py build
+
 install: install-python3
 
 install-python3: olm-python3

python/README.md

@@ -15,6 +15,18 @@ found [here][6].
 
 The full API reference can be found [here][7].
 
+# Installation instructions
+
+To install from the source package, you will need:
+
+- cmake (recommended) or GNU make
+- a C/C++ compiler
+
+You can then run `pip install python-olm`.
+
+This should work in UNIX-like environments, including macOS, and may work in
+other environments too, but is known to not work yet in Windows.
+
 # Accounts
 
 Accounts create and hold the central identity of the Olm protocol, they consist of a fingerprint and identity
@@ -157,5 +169,5 @@ Pickling works the same way as for peer-to-peer Olm sessions.
 [3]: https://cffi.readthedocs.io/en/latest/
 [4]: https://git.matrix.org/git/olm/about/docs/olm.rst
 [5]: https://git.matrix.org/git/olm/about/docs/megolm.rst
-[6]: https://matrix.org/docs/guides/e2e_implementation.html
+[6]: https://matrix.org/docs/guides/end-to-end-encryption-implementation-guide
 [7]: https://poljar.github.io/python-olm/html/index.html

python/make_sdist.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+set -e
+
+DIR=$(mktemp -d)
+SRC=$(pwd)
+
+echo "Making headers"
+make headers
+
+cd $DIR
+
+echo "Copying python module"
+cp -a $SRC/* .
+mkdir -p libolm
+echo "Cleaning sources"
+make clean > /dev/null
+cp -a $SRC/include .
+echo "Copying libolm sources"
+for src in cmake CMakeLists.txt common.mk include lib Makefile olm.pc.in src tests; do
+    cp -a $SRC/../$src libolm
+done
+find libolm -name \*~ -delete
+find libolm -name \#\*\# -delete
+
+echo "Building"
+patch -p1 < $SRC/packaging.diff
+python3 -m build -s
+
+echo "Copying result"
+mkdir -p $SRC/dist
+cp dist/* $SRC/dist
+
+echo "Cleaning up"
+cd $SRC
+rm -rf $DIR

python/olm/__version__.py

@@ -1,9 +0,0 @@
-__title__ = "python-olm"
-__description__ = ("python CFFI bindings for the olm "
-                   "cryptographic ratchet library")
-__url__ = "https://github.com/poljar/python-olm"
-__version__ = "3.2.10"
-__author__ = "Damir Jelić"
-__author_email__ = "poljar@termina.org.uk"
-__license__ = "Apache 2.0"
-__copyright__ = "Copyright 2018-2019 Damir Jelić"

python/olm/_finalize.py

@@ -23,7 +23,6 @@
 
 This is designed for avoiding __del__.
 """
-from __future__ import print_function
 
 import sys
 import traceback

python/olm/account.py

@@ -32,8 +32,6 @@ import json
 from builtins import bytes, super
 from typing import AnyStr, Dict, Optional, Type
 
-from future.utils import bytes_to_native_str
-
 # pylint: disable=no-name-in-module
 from _libolm import ffi, lib  # type: ignore
 
@@ -93,8 +91,7 @@ class Account(object):
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(
-            ffi.string((lib.olm_account_last_error(self._account))))
+        last_error = ffi.string((lib.olm_account_last_error(self._account))).decode()
 
         raise OlmAccountError(last_error)
 
@@ -209,7 +206,7 @@ class Account(object):
                 for i in range(0, len(bytes_message)):
                     bytes_message[i] = 0
 
-        return bytes_to_native_str(ffi.unpack(out_buffer, out_length))
+        return ffi.unpack(out_buffer, out_length).decode()
 
     @property
     def max_one_time_keys(self):

python/olm/group_session.py

@@ -28,8 +28,6 @@ Examples:
 from builtins import bytes, super
 from typing import AnyStr, Optional, Tuple, Type
 
-from future.utils import bytes_to_native_str
-
 # pylint: disable=no-name-in-module
 from _libolm import ffi, lib  # type: ignore
 
@@ -171,8 +169,9 @@ class InboundGroupSession(object):
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(ffi.string(
-            lib.olm_inbound_group_session_last_error(self._session)))
+        last_error = ffi.string(
+            lib.olm_inbound_group_session_last_error(self._session)
+        ).decode()
 
         raise OlmGroupSessionError(last_error)
 
@@ -252,7 +251,7 @@ class InboundGroupSession(object):
             id_length
         )
         self._check_error(ret)
-        return bytes_to_native_str(ffi.unpack(id_buffer, id_length))
+        return ffi.unpack(id_buffer, id_length).decode()
 
     @property
     def first_known_index(self):
@@ -290,7 +289,7 @@ class InboundGroupSession(object):
             message_index
         )
         self._check_error(ret)
-        export_str = bytes_to_native_str(ffi.unpack(export_buffer, export_length))
+        export_str = ffi.unpack(export_buffer, export_length).decode()
 
         # clear out copies of the key
         lib.memset(export_buffer, 0, export_length)
@@ -373,9 +372,9 @@ class OutboundGroupSession(object):
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(ffi.string(
+        last_error = ffi.string(
             lib.olm_outbound_group_session_last_error(self._session)
-        ))
+        ).decode()
 
         raise OlmGroupSessionError(last_error)
 
@@ -483,7 +482,7 @@ class OutboundGroupSession(object):
                 for i in range(0, len(byte_plaintext)):
                     byte_plaintext[i] = 0
 
-        return bytes_to_native_str(ffi.unpack(message_buffer, message_length))
+        return ffi.unpack(message_buffer, message_length).decode()
 
     @property
     def id(self):
@@ -499,7 +498,7 @@ class OutboundGroupSession(object):
         )
         self._check_error(ret)
 
-        return bytes_to_native_str(ffi.unpack(id_buffer, id_length))
+        return ffi.unpack(id_buffer, id_length).decode()
 
     @property
     def message_index(self):
@@ -529,4 +528,4 @@ class OutboundGroupSession(object):
         )
         self._check_error(ret)
 
-        return bytes_to_native_str(ffi.unpack(key_buffer, key_length))
+        return ffi.unpack(key_buffer, key_length).decode()

python/olm/pk.py

@@ -36,8 +36,6 @@ Examples:
 from builtins import super
 from typing import AnyStr, Type
 
-from future.utils import bytes_to_native_str
-
 from _libolm import ffi, lib  # type: ignore
 
 from ._compat import URANDOM, to_bytearray, to_unicode_str
@@ -116,8 +114,9 @@ class PkEncryption(object):
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(
-            ffi.string(lib.olm_pk_encryption_last_error(self._pk_encryption)))
+        last_error = ffi.string(
+            lib.olm_pk_encryption_last_error(self._pk_encryption)
+        ).decode()
 
         raise PkEncryptionError(last_error)
 
@@ -166,12 +165,9 @@ class PkEncryption(object):
                     byte_plaintext[i] = 0
 
         message = PkMessage(
-            bytes_to_native_str(
-                ffi.unpack(ephemeral_key, ephemeral_key_size)),
-            bytes_to_native_str(
-                ffi.unpack(mac, mac_length)),
-            bytes_to_native_str(
-                ffi.unpack(ciphertext, ciphertext_length))
+            ffi.unpack(ephemeral_key, ephemeral_key_size).decode(),
+            ffi.unpack(mac, mac_length).decode(),
+            ffi.unpack(ciphertext, ciphertext_length).decode(),
         )
         return message
 
@@ -217,18 +213,19 @@ class PkDecryption(object):
             random_buffer, random_length
         )
         self._check_error(ret)
-        self.public_key = bytes_to_native_str(ffi.unpack(
+        self.public_key: str = ffi.unpack(
             key_buffer,
             key_length
-        ))
+        ).decode()
 
     def _check_error(self, ret):
         # type: (int) -> None
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(
-            ffi.string(lib.olm_pk_decryption_last_error(self._pk_decryption)))
+        last_error = ffi.string(
+            lib.olm_pk_decryption_last_error(self._pk_decryption)
+        ).decode()
 
         raise PkDecryptionError(last_error)
 
@@ -267,7 +264,7 @@ class PkDecryption(object):
 
     @classmethod
     def from_pickle(cls, pickle, passphrase=""):
-        # types: (bytes, str) -> PkDecryption
+        # type: (bytes, str) -> PkDecryption
         """Restore a previously stored PkDecryption object.
 
         Creates a PkDecryption object from a pickled base64 string. Decrypts
@@ -306,15 +303,15 @@ class PkDecryption(object):
             for i in range(0, len(byte_key)):
                 byte_key[i] = 0
 
-        obj.public_key = bytes_to_native_str(ffi.unpack(
+        obj.public_key = ffi.unpack(
             pubkey_buffer,
             pubkey_length
-        ))
+        ).decode()
 
         return obj
 
     def decrypt(self, message, unicode_errors="replace"):
-        # type (PkMessage, str) -> str
+        # type: (PkMessage, str) -> str
         """Decrypt a previously encrypted Pk message.
 
         Returns the decrypted plaintext.
@@ -411,17 +408,14 @@ class PkSigning(object):
 
         self._check_error(ret)
 
-        self.public_key = bytes_to_native_str(
-            ffi.unpack(pubkey_buffer, pubkey_length)
-        )
+        self.public_key = ffi.unpack(pubkey_buffer, pubkey_length).decode()
 
     def _check_error(self, ret):
         # type: (int) -> None
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(
-            ffi.string(lib.olm_pk_signing_last_error(self._pk_signing)))
+        last_error = ffi.string(lib.olm_pk_signing_last_error(self._pk_signing)).decode()
 
         raise PkSigningError(last_error)
 
@@ -456,6 +450,4 @@ class PkSigning(object):
             signature_buffer, signature_length)
         self._check_error(ret)
 
-        return bytes_to_native_str(
-            ffi.unpack(signature_buffer, signature_length)
-        )
+        return ffi.unpack(signature_buffer, signature_length).decode()

python/olm/sas.py

@@ -34,8 +34,6 @@ from builtins import bytes
 from functools import wraps
 from typing import Optional
 
-from future.utils import bytes_to_native_str
-
 from _libolm import ffi, lib
 
 from ._compat import URANDOM, to_bytearray, to_bytes
@@ -92,8 +90,7 @@ class Sas(object):
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(
-            ffi.string((lib.olm_sas_last_error(self._sas))))
+        last_error = ffi.string((lib.olm_sas_last_error(self._sas))).decode()
 
         raise OlmSasError(last_error)
 
@@ -115,7 +112,7 @@ class Sas(object):
             lib.olm_sas_get_pubkey(self._sas, pubkey_buffer, pubkey_length)
         )
 
-        return bytes_to_native_str(ffi.unpack(pubkey_buffer, pubkey_length))
+        return ffi.unpack(pubkey_buffer, pubkey_length).decode()
 
     @property
     def other_key_set(self):
@@ -208,7 +205,41 @@ class Sas(object):
                 mac_length
             )
         )
-        return bytes_to_native_str(ffi.unpack(mac_buffer, mac_length))
+        return ffi.unpack(mac_buffer, mac_length).decode()
+
+    def calculate_mac_fixed_base64(self, message, extra_info):
+        # type: (str, str) -> str
+        """Generate a message authentication code based on the shared secret.
+
+        This function uses a fixed base64 encoding that is compatible with
+        other base64 implementations.
+
+        Args:
+            message (str): The message to produce the authentication code for.
+            extra_info (str): Extra information to mix in when generating the
+                MAC
+
+        Raises OlmSasError on failure.
+
+        """
+        byte_message = to_bytes(message)
+        byte_info = to_bytes(extra_info)
+
+        mac_length = lib.olm_sas_mac_length(self._sas)
+        mac_buffer = ffi.new("char[]", mac_length)
+
+        self._check_error(
+            lib.olm_sas_calculate_mac_fixed_base64(
+                self._sas,
+                ffi.from_buffer(byte_message),
+                len(byte_message),
+                ffi.from_buffer(byte_info),
+                len(byte_info),
+                mac_buffer,
+                mac_length
+            )
+        )
+        return ffi.unpack(mac_buffer, mac_length).decode()
 
     def calculate_mac_long_kdf(self, message, extra_info):
         # type: (str, str) -> str
@@ -242,4 +273,4 @@ class Sas(object):
                 mac_length
             )
         )
-        return bytes_to_native_str(ffi.unpack(mac_buffer, mac_length))
+        return ffi.unpack(mac_buffer, mac_length).decode()

python/olm/session.py

@@ -35,8 +35,6 @@ Examples:
 from builtins import bytes, super
 from typing import AnyStr, Optional, Type
 
-from future.utils import bytes_to_native_str
-
 # pylint: disable=no-name-in-module
 from _libolm import ffi, lib  # type: ignore
 
@@ -146,8 +144,7 @@ class Session(object):
         if ret != lib.olm_error():
             return
 
-        last_error = bytes_to_native_str(
-            ffi.string(lib.olm_session_last_error(self._session)))
+        last_error = ffi.string(lib.olm_session_last_error(self._session)).decode()
 
         raise OlmSessionError(last_error)
 
@@ -260,16 +257,16 @@ class Session(object):
 
         if message_type == lib.OLM_MESSAGE_TYPE_PRE_KEY:
             return OlmPreKeyMessage(
-                bytes_to_native_str(ffi.unpack(
+                ffi.unpack(
                     ciphertext_buffer,
                     ciphertext_length
-                )))
+                ).decode())
         elif message_type == lib.OLM_MESSAGE_TYPE_MESSAGE:
             return OlmMessage(
-                bytes_to_native_str(ffi.unpack(
+                ffi.unpack(
                     ciphertext_buffer,
                     ciphertext_length
-                )))
+                ).decode())
         else:  # pragma: no cover
             raise ValueError("Unknown message type")
 
@@ -340,7 +337,7 @@ class Session(object):
         self._check_error(
             lib.olm_session_id(self._session, id_buffer, id_length)
         )
-        return bytes_to_native_str(ffi.unpack(id_buffer, id_length))
+        return ffi.unpack(id_buffer, id_length).decode()
 
     def matches(self, message, identity_key=None):
         # type: (OlmPreKeyMessage, Optional[AnyStr]) -> bool
@@ -407,7 +404,7 @@ class Session(object):
         lib.olm_session_describe(
             self._session, describe_buffer, buffer_length
         )
-        return bytes_to_native_str(ffi.string(describe_buffer))
+        return ffi.string(describe_buffer).decode()
 
 
 class InboundSession(Session):

python/olm/utility.py

@@ -33,8 +33,6 @@ Examples:
 # pylint: disable=redefined-builtin,unused-import
 from typing import AnyStr, Type
 
-from future.utils import bytes_to_native_str
-
 # pylint: disable=no-name-in-module
 from _libolm import ffi, lib  # type: ignore
 
@@ -123,7 +121,7 @@ class _Utility(object):
 
         cls._check_error(ret, OlmHashError)
 
-        return bytes_to_native_str(ffi.unpack(hash, hash_length))
+        return ffi.unpack(hash, hash_length).decode()
 
 
 def ed25519_verify(key, message, signature):

python/olm_build.py

@@ -15,8 +15,6 @@
 # CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-from __future__ import unicode_literals
-
 import os
 import subprocess
 
@@ -28,7 +26,6 @@ PATH = os.path.dirname(__file__)
 DEVELOP = os.environ.get("DEVELOP")
 
 compile_args = ["-I../include"]
-link_args = ["-L../build"]
 
 if DEVELOP and DEVELOP.lower() in ["yes", "true", "1"]:
     link_args.append('-Wl,-rpath=../build')
@@ -46,8 +43,10 @@ ffibuilder.set_source(
         #include <olm/sas.h>
     """,
     libraries=["olm"],
+    library_dirs=[os.path.join("..", "build")],
     extra_compile_args=compile_args,
-    extra_link_args=link_args)
+    source_extension=".cpp", # we need to link the C++ standard library, so use a C++ extension
+)
 
 with open(os.path.join(PATH, "include/olm/error.h")) as f:
     ffibuilder.cdef(f.read(), override=True)

python/packaging.diff

@@ -0,0 +1,56 @@
+--- a/MANIFEST.in
++++ b/MANIFEST.in
+@@ -1,3 +1,8 @@
+ include include/olm/*.h
+-include Makefile
+ include olm_build.py
++include libolm/*
++include libolm/cmake/*
++include libolm/include/olm/*
++recursive-include libolm/lib *
++include libolm/src/*
++recursive-include libolm/tests *
+--- a/olm_build.py
++++ b/olm_build.py
+@@ -25,12 +25,29 @@
+ 
+ DEVELOP = os.environ.get("DEVELOP")
+ 
+-compile_args = ["-I../include"]
++compile_args = ["-Ilibolm/include"]
+ 
+ if DEVELOP and DEVELOP.lower() in ["yes", "true", "1"]:
+     link_args.append('-Wl,-rpath=../build')
+ 
+-headers_build = subprocess.Popen("make headers", shell=True)
+-headers_build.wait()
++# Try to build with cmake first, fall back to GNU make
++try:
++    subprocess.run(
++        ["cmake", ".", "-Bbuild", "-DBUILD_SHARED_LIBS=NO"],
++        cwd="libolm", check=True,
++    )
++    subprocess.run(
++        ["cmake", "--build", "build"],
++        cwd="libolm", check=True,
++    )
++except FileNotFoundError:
++    try:
++        # try "gmake" first because some systems have a non-GNU make
++        # installed as "make"
++        subprocess.run(["gmake", "static"], cwd="libolm", check=True)
++    except FileNotFoundError:
++        # some systems have GNU make installed without the leading "g"
++        # so give that a try (though this may fail if it isn't GNU make)
++        subprocess.run(["make", "static"], cwd="libolm", check=True)
+ 
+ ffibuilder.set_source(
+@@ -43,7 +60,7 @@
+         #include <olm/sas.h>
+     """,
+     libraries=["olm"],
+-    library_dirs=[os.path.join("..", "build")],
++    library_dirs=[os.path.join("libolm", "build")],
+     extra_compile_args=compile_args,
+     source_extension=".cpp", # we need to link the C++ standard library, so use a C++ extension
+ )

python/pyproject.toml

@@ -0,0 +1,22 @@
+[build-system]
+requires = ["setuptools", "cffi>=1.0.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "python-olm"
+version = "3.2.16"
+description = "python CFFI bindings for the olm cryptographic ratchet library"
+authors = [{name = "Damir Jelić", email = "poljar@termina.org.uk"}]
+license = {text = "Apache-2.0"}
+readme = "README.md"
+classifiers = [
+    "License :: OSI Approved :: Apache Software License",
+    "Topic :: Communications",
+]
+dependencies = ["cffi>=1.0.0"]
+
+[project.urls]
+homepage = "https://gitlab.matrix.org/matrix-org/olm/-/tree/master/python"
+
+[tool.setuptools]
+packages = [ "olm" ]

python/requirements.txt

@@ -1,3 +1,2 @@
-future
 cffi
 typing

python/setup.cfg

@@ -3,6 +3,3 @@ testpaths = tests
 flake8-ignore =
     olm/*.py F401
     tests/*.py W503
-
-[coverage:run]
-omit=olm/__version__.py

python/setup.py

@@ -1,31 +1,6 @@
 # -*- coding: utf-8 -*-
-
-import os
-from codecs import open
-
 from setuptools import setup
 
-here = os.path.abspath(os.path.dirname(__file__))
-
-about = {}
-with open(os.path.join(here, "olm", "__version__.py"), "r", "utf-8") as f:
-    exec(f.read(), about)
-
 setup(
-    name=about["__title__"],
-    version=about["__version__"],
-    description=about["__description__"],
-    author=about["__author__"],
-    author_email=about["__author_email__"],
-    url=about["__url__"],
-    license=about["__license__"],
-    packages=["olm"],
-    setup_requires=["cffi>=1.0.0"],
-    cffi_modules=["olm_build.py:ffibuilder"],
-    install_requires=[
-        "cffi>=1.0.0",
-        "future",
-        "typing;python_version<'3.5'"
-    ],
-    zip_safe=False
+    cffi_modules=["olm_build.py:ffibuilder"]
 )

python/tests/utils_test.py

@@ -1,8 +1,6 @@
 import base64
 import hashlib
 
-from future.utils import bytes_to_native_str
-
 from olm import sha256
 from olm._compat import to_bytes
 
@@ -19,7 +17,7 @@ class TestClass(object):
             hashlib.sha256(to_bytes(input1)).digest()
         )
 
-        hashlib_hash = bytes_to_native_str(hashlib_hash[:-1])
+        hashlib_hash = hashlib_hash[:-1].decode()
 
         assert first_hash != second_hash
         assert hashlib_hash == first_hash

python/tox.ini

@@ -6,7 +6,7 @@ envlist = py27,py36,pypy,{py2,py3}-cov,coverage
 deps = -rrequirements.txt
        -rtest-requirements.txt
 
-passenv = TOXENV CI TRAVIS TRAVIS_*
+passenv = TOXENV,CI,TRAVIS,TRAVIS_*
 commands = pytest --benchmark-disable
 usedevelop = True
 

src/session.cpp

@@ -437,7 +437,7 @@ void olm::Session::describe(char *describe_buffer, size_t buflen) {
 
     size = snprintf(
         describe_buffer, remaining,
-        "sender chain index: %d ", ratchet.sender_chain[0].chain_key.index
+        "sender chain index: %lu ", ratchet.sender_chain[0].chain_key.index
     );
     CHECK_SIZE_AND_ADVANCE;
 
@@ -447,7 +447,7 @@ void olm::Session::describe(char *describe_buffer, size_t buflen) {
     for (size_t i = 0; i < ratchet.receiver_chains.size(); ++i) {
         size = snprintf(
             describe_buffer, remaining,
-            " %d", ratchet.receiver_chains[i].chain_key.index
+            " %lu", ratchet.receiver_chains[i].chain_key.index
         );
         CHECK_SIZE_AND_ADVANCE;
     }
@@ -458,7 +458,7 @@ void olm::Session::describe(char *describe_buffer, size_t buflen) {
     for (size_t i = 0; i < ratchet.skipped_message_keys.size(); ++i) {
         size = snprintf(
             describe_buffer, remaining,
-            " %d", ratchet.skipped_message_keys[i].message_key.index
+            " %lu", ratchet.skipped_message_keys[i].message_key.index
         );
         CHECK_SIZE_AND_ADVANCE;
     }

tests/include/doctest.h

@@ -4498,7 +4498,7 @@ namespace {
             sigaltstack(&sigStack, &oldSigStack);
             struct sigaction sa = {};
             sa.sa_handler       = handleSignal; // NOLINT
-            sa.sa_flags         = SA_ONSTACK;
+            sa.sa_flags         = SS_ONSTACK;
             for(std::size_t i = 0; i < DOCTEST_COUNTOF(signalDefs); ++i) {
                 sigaction(signalDefs[i].id, &sa, &oldSigActions[i]);
             }

xcode/OLMKit/OLMSAS.h

@@ -54,6 +54,17 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (NSString *)calculateMac:(NSString*)input info:(NSString*)info error:(NSError* _Nullable *)error;
 
+/**
+ Generate a message authentication code (MAC) based on the shared secret.
+ This version is compatible with other base64 implementations.
+
+ @param input the message to produce the authentication code for.
+ @param info extra information to mix in when generating the MAC, as per the Matrix spec.
+ @param error the error if any.
+ @return the MAC.
+ */
+- (NSString *)calculateMacFixedBase64:(NSString*)input info:(NSString*)info error:(NSError* _Nullable *)error;
+
 /**
  Generate a message authentication code (MAC) based on the shared secret.
  For compatibility with an old version of olm.js.

xcode/OLMKit/OLMSAS.m

@@ -137,6 +137,40 @@
     return mac;
 }
 
+- (NSString *)calculateMacFixedBase64:(NSString *)input info:(NSString *)info error:(NSError *__autoreleasing  _Nullable *)error {
+    NSMutableData *inputData = [input dataUsingEncoding:NSUTF8StringEncoding].mutableCopy;
+    NSData *infoData = [info dataUsingEncoding:NSUTF8StringEncoding];
+
+    size_t macLength = olm_sas_mac_length(olmSAS);
+    NSMutableData *macData = [NSMutableData dataWithLength:macLength];
+    if (!macData) {
+        return nil;
+    }
+
+    size_t result = olm_sas_calculate_mac_fixed_base64(olmSAS,
+                                                       inputData.mutableBytes, inputData.length,
+                                                       infoData.bytes, infoData.length,
+                                                       macData.mutableBytes, macLength);
+    if (result == olm_error()) {
+        const char *olm_error = olm_sas_last_error(olmSAS);
+        NSLog(@"[OLMSAS] calculateMac: olm_sas_calculate_mac error: %s", olm_error);
+
+        NSString *errorString = [NSString stringWithUTF8String:olm_error];
+        if (error && olm_error && errorString) {
+            *error = [NSError errorWithDomain:OLMErrorDomain
+                                         code:0
+                                     userInfo:@{
+                                                NSLocalizedDescriptionKey: errorString,
+                                                NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_sas_calculate_mac error: %@", errorString]
+                                                }];
+        }
+        return nil;
+    }
+
+    NSString *mac = [[NSString alloc] initWithData:macData encoding:NSUTF8StringEncoding];
+    return mac;
+}
+
 - (NSString *)calculateMacLongKdf:(NSString *)input info:(NSString *)info error:(NSError *__autoreleasing  _Nullable *)error {
     NSMutableData *inputData = [input dataUsingEncoding:NSUTF8StringEncoding].mutableCopy;
     NSData *infoData = [info dataUsingEncoding:NSUTF8StringEncoding];