samplecode/protobuf/enclave/src/lib.rs

// Copyright (C) 2017-2018 Baidu, Inc. All Rights Reserved.
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#![crate_name = "protobufenclave"]
#![crate_type = "staticlib"]

#![cfg_attr(not(target_env = "sgx"), no_std)]
#![cfg_attr(target_env = "sgx", feature(rustc_private))]

extern crate sgx_types;
#[cfg(not(target_env = "sgx"))]
#[macro_use]
extern crate sgx_tstd as std;

use sgx_types::*;
use std::string::String;
use std::io::{self, Write};
use std::slice;

extern crate protobuf;
mod person;
use person::Person;
use protobuf::hex::decode_hex;
use protobuf::parse_from_bytes;

#[no_mangle]
pub extern "C" fn say_something(some_string: *const u8, some_len: usize) -> sgx_status_t {

    let str_slice = unsafe { slice::from_raw_parts(some_string, some_len) };
    let _ = io::stdout().write(str_slice);

    let decoded = decode_hex(&String::from_utf8(str_slice.to_vec()).unwrap());
    let parsed = parse_from_bytes::<Person>(&decoded).unwrap();

    println!("\nname: {}, id: 0x{:08X}, email at: {}", parsed.get_name(), parsed.get_id(), parsed.get_email() );

    sgx_status_t::SGX_SUCCESS
}