wasmOpenSSL

wasmOpenSSL is a port of OpenSSL for nodejs and browser applications.

Note: This is a source-code build of OpenSSL using the Wasienv and Emscripten SDK, this makes both prerequisite for a successful porting of the library.

Steps for porting OpenSSL

This script has been tested on Ubuntu 18.04 with OpenSSL version 1.1.1d

Setting up the environment

1. Install wasienv:

~/ $ curl https://raw.githubusercontent.com/wasienv/wasienv/master/install.sh | sh

2. Install emscripten:

~/ $ git clone https://github.com/emscripten-core/emsdk.git
~/ $ cd emsdk
~/emsdk $ git pull
~/emsdk $ ./emsdk install latest
~/emsdk $ ./emsdk activate latest
~/emsdk $ source ./emsdk_env.sh

Building

1. Compile wasmOpenSSL

It should be noted that in order for the script to execute successfully, both wasienv and emcc commands should be available

~/ $ cd WasmOpenSSL/ && chmod +x build.sh
~/WasmOpenSSL $ ./build.sh
{...SNIP...}
Done!

Results of the compilation are in the /build folder.

2. TO BE CONTINUED

Known issues

• Static declaration follows non-static declaration (syntax error)

  In file included from crypto/ui/ui_openssl.c:111:
  /home/voltron/.local/lib/python3.6/site-packages/wasienv/stubs/termios.h:48:36: error: static   declaration of 'tcgetattr' follows non-static declaration

  FIX:

  • Open termios.h

      int tcgetattr (int, struct termios *); -to-> static int tcgetattr (int, struct termios *);
      int tcsetattr (int, int, const struct termios *); -to-> static int tcsetattr (int, int, const struct termios *);