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Eric
Rust bindings and SDK for the ELSTER Rich Client (ERiC)
What is ELSTER?
Elster (short for Elektronische Steuererklärung) is a project by the German tax administrations to process tax returns and declarations.
What is ERiC?
ERiC is a C library that is integrated into a tax application. ERiC checks the data supplied by the tax application for plausibility, and transmits the data encrypted to the computing center of the respective tax administration.
Requirements
You need to have the shared library libericapi.so and the header file ericapi.h available on your system which can be downloaded from ELSTER for developers after access has been requested here.
For generating the bindings on your platform and architecture, you need libclang as well. For example, on Debian/Ubuntu install:
Rust bindings
Generate bindings
The environment variables LIBRARY_NAME, LIBRARY_PATH, HEADER_FILE, and
PLUGIN_PATH are expected. For example:
LIBRARY_NAME=ericapi
LIBRARY_PATH=ERiC-38.1.6.0-Linux-x86_64/ERiC-38.1.6.0/Linux-x86_64/lib
HEADER_FILE=ERiC-38.1.6.0-Linux-x86_64/ERiC-38.1.6.0/Linux-x86_64/include/ericapi.h
PLUGIN_PATH=ERiC-38.1.6.0-Linux-x86_64/ERiC-38.1.6.0/Linux-x86_64/lib/plugins2
The bindings have to be generated on-the-fly for your specific platform and architecture:
The bindings are generated in target/debug/build/eric-bindings-<random-id>/out/bindings.rs.
Test bindings
The bindings are included in src/lib.rs via include! macro and tested by:
Logs are written to eric.log in the current directory.