Add c bindings example

Cargo.lock

@@ -58,8 +58,8 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0a6fe808308bb07d393e2ea47780043ec47683fcf19cf5efc8ca51c50cc8c68a"
 dependencies = [
- "block-cipher",
+    "block-cipher",
- "opaque-debug 0.3.0",
+    "opaque-debug 0.3.0",
 ]
 
 [[package]]
@@ -68,13 +68,22 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "739f4a8db6605981345c5654f3a85b056ce52f37a39d34da03f25bf2151ea16e"
 
+[[package]]
+name = "aho-corasick"
+version = "0.7.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5"
+dependencies = [
+    "memchr",
+]
+
 [[package]]
 name = "ansi_term"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 dependencies = [
- "winapi 0.3.9",
+    "winapi 0.3.9",
 ]
 
 [[package]]
@@ -341,8 +350,31 @@ version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f30d3a39baa26f9651f17b375061f3233dde33424a8b72b0dbe93a68a0bc896d"
 dependencies = [
- "byteorder",
+    "byteorder",
- "serde",
+    "serde",
+]
+
+[[package]]
+name = "bindgen"
+version = "0.58.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f8523b410d7187a43085e7e064416ea32ded16bd0a4e6fc025e21616d01258f"
+dependencies = [
+    "bitflags",
+    "cexpr",
+    "clang-sys",
+    "clap",
+    "env_logger",
+    "lazy_static",
+    "lazycell",
+    "log 0.4.14",
+    "peeking_take_while",
+    "proc-macro2",
+    "quote",
+    "regex",
+    "rustc-hash",
+    "shlex",
+    "which 3.1.1",
 ]
 
 [[package]]
@@ -351,9 +383,9 @@ version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ec5f88a446d66e7474a3b8fa2e348320b574463fb78d799d90ba68f79f48e0e"
 dependencies = [
- "bech32",
+    "bech32",
- "bitcoin_hashes",
+    "bitcoin_hashes",
- "secp256k1",
+    "secp256k1",
  "serde",
 ]
 
@@ -566,8 +598,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "17fa3d1ac1ca21c5c4e36a97f3c3eb25084576f6fc47bf0139c1123434216c6c"
 dependencies = [
  "cc",
- "libc",
+    "libc",
- "pkg-config",
+    "pkg-config",
 ]
 
 [[package]]
@@ -576,6 +608,15 @@ version = "1.0.67"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e3c69b077ad434294d3ce9f1f6143a2a4b89a8a2d54ef813d85003a4fd1137fd"
 
+[[package]]
+name = "cexpr"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4aedb84272dbe89af497cf81375129abda4fc0a9e7c5d317498c15cc30c0d27"
+dependencies = [
+    "nom",
+]
+
 [[package]]
 name = "cfg-if"
 version = "0.1.10"
@@ -617,11 +658,22 @@ version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
 dependencies = [
- "libc",
+    "libc",
- "num-integer",
+    "num-integer",
- "num-traits",
+    "num-traits",
- "time 0.1.43",
+    "time 0.1.43",
- "winapi 0.3.9",
+    "winapi 0.3.9",
+]
+
+[[package]]
+name = "clang-sys"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "853eda514c284c2287f4bf20ae614f8781f40a81d32ecda6e91449304dfe077c"
+dependencies = [
+    "glob",
+    "libc",
+    "libloading",
 ]
 
 [[package]]
@@ -630,9 +682,9 @@ version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
 dependencies = [
- "ansi_term 0.11.0",
+    "ansi_term 0.11.0",
- "atty",
+    "atty",
- "bitflags",
+    "bitflags",
  "strsim",
  "textwrap",
  "unicode-width",
@@ -1008,10 +1060,23 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c5f0096a91d210159eceb2ff5e1c4da18388a170e1e3ce948aac9c8fdbbf595"
 dependencies = [
- "heck",
+    "heck",
- "proc-macro2",
+    "proc-macro2",
- "quote",
+    "quote",
- "syn",
+    "syn",
+]
+
+[[package]]
+name = "env_logger"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17392a012ea30ef05a610aa97dfb49496e71c9f676b27879922ea5bdf60d9d3f"
+dependencies = [
+    "atty",
+    "humantime",
+    "log 0.4.14",
+    "regex",
+    "termcolor",
 ]
 
 [[package]]
@@ -1271,19 +1336,25 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "97304e4cd182c3846f7575ced3890c53012ce534ad9114046b0a9e00bb30a375"
 dependencies = [
- "opaque-debug 0.3.0",
+    "opaque-debug 0.3.0",
- "polyval",
+    "polyval",
 ]
 
+[[package]]
+name = "glob"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
+
 [[package]]
 name = "h2"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d832b01df74254fe364568d6ddc294443f61cbec82816b60904303af87efae78"
 dependencies = [
- "bytes 1.0.1",
+    "bytes 1.0.1",
- "fnv",
+    "fnv",
- "futures-core",
+    "futures-core",
  "futures-sink",
  "futures-util",
  "http",
@@ -1430,15 +1501,21 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
 
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
 [[package]]
 name = "hyper"
 version = "0.10.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0a0652d9a2609a968c14be1a9ea00bf4b1d64e2e1f53a1b51b6fff3a6e829273"
 dependencies = [
- "base64 0.9.3",
+    "base64 0.9.3",
- "httparse",
+    "httparse",
- "language-tags",
+    "language-tags",
  "log 0.3.9",
  "mime 0.2.6",
  "num_cpus",
@@ -1668,17 +1745,23 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
+[[package]]
+name = "lazycell"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
+
 [[package]]
 name = "lexical-core"
 version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "21f866863575d0e1d654fbeeabdc927292fdf862873dc3c96c6f753357e13374"
 dependencies = [
- "arrayvec",
+    "arrayvec",
- "bitflags",
+    "bitflags",
- "cfg-if 1.0.0",
+    "cfg-if 1.0.0",
- "ryu",
+    "ryu",
- "static_assertions",
+    "static_assertions",
 ]
 
 [[package]]
@@ -1687,15 +1770,25 @@ version = "0.2.90"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba4aede83fc3617411dc6993bc8c70919750c1c257c6ca6a502aed6e0e2394ae"
 
+[[package]]
+name = "libloading"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f84d96438c15fcd6c3f244c8fce01d1e2b9c6b5623e9c711dc9286d8fc92d6a"
+dependencies = [
+    "cfg-if 1.0.0",
+    "winapi 0.3.9",
+]
+
 [[package]]
 name = "libp2p"
 version = "0.36.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe5759b526f75102829c15e4d8566603b4bf502ed19b5f35920d98113873470d"
 dependencies = [
- "atomic",
+    "atomic",
- "bytes 1.0.1",
+    "bytes 1.0.1",
- "futures",
+    "futures",
  "lazy_static",
  "libp2p-core",
  "libp2p-dns",
@@ -2109,14 +2202,16 @@ dependencies = [
 name = "monero-adaptor"
 version = "0.1.0"
 dependencies = [
- "anyhow",
+    "anyhow",
- "curve25519-dalek",
+    "bindgen",
- "hex 0.4.3",
+    "cc",
- "monero",
+    "curve25519-dalek",
- "nazgul",
+    "hex 0.4.3",
- "rand 0.7.3",
+    "monero",
- "sha2 0.9.3",
+    "nazgul",
- "tokio 1.4.0",
+    "rand 0.7.3",
+    "sha2 0.9.3",
+    "tokio 1.4.0",
 ]
 
 [[package]]
@@ -2409,23 +2504,29 @@ version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fa7a782938e745763fe6907fc6ba86946d72f49fe7e21de074e08128a99fb018"
 dependencies = [
- "cfg-if 1.0.0",
+    "cfg-if 1.0.0",
- "instant",
+    "instant",
- "libc",
+    "libc",
- "redox_syscall 0.2.5",
+    "redox_syscall 0.2.5",
- "smallvec",
+    "smallvec",
- "winapi 0.3.9",
+    "winapi 0.3.9",
 ]
 
+[[package]]
+name = "peeking_take_while"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
+
 [[package]]
 name = "pem"
 version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd56cbd21fea48d0c440b41cd69c589faacade08c992d9a54e471b79d0fd13eb"
 dependencies = [
- "base64 0.13.0",
+    "base64 0.13.0",
- "once_cell",
+    "once_cell",
- "regex",
+    "regex",
 ]
 
 [[package]]
@@ -2641,16 +2742,16 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32d3ebd75ac2679c2af3a92246639f9fcc8a442ee420719cc4fe195b98dd5fa3"
 dependencies = [
- "bytes 1.0.1",
+    "bytes 1.0.1",
- "heck",
+    "heck",
- "itertools 0.9.0",
+    "itertools 0.9.0",
- "log 0.4.14",
+    "log 0.4.14",
- "multimap",
+    "multimap",
- "petgraph",
+    "petgraph",
- "prost",
+    "prost",
- "prost-types",
+    "prost-types",
- "tempfile",
+    "tempfile",
- "which",
+    "which 4.0.2",
 ]
 
 [[package]]
@@ -2942,7 +3043,9 @@ version = "1.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "957056ecddbeba1b26965114e191d2e8589ce74db242b6ea25fc4062427a5c19"
 dependencies = [
- "regex-syntax",
+    "aho-corasick",
+    "memchr",
+    "regex-syntax",
 ]
 
 [[package]]
@@ -3049,11 +3152,17 @@ version = "1.10.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc7f5b8840fb1f83869a3e1dfd06d93db79ea05311ac5b42b8337d3371caa4f1"
 dependencies = [
- "arrayvec",
+    "arrayvec",
- "num-traits",
+    "num-traits",
- "serde",
+    "serde",
 ]
 
+[[package]]
+name = "rustc-hash"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
+
 [[package]]
 name = "rustc-hex"
 version = "2.1.0"
@@ -3344,18 +3453,24 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "79c719719ee05df97490f80a45acfc99e5a30ce98a1e4fb67aee422745ae14e3"
 dependencies = [
- "lazy_static",
+    "lazy_static",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42a568c8f2cd051a4d283bd6eb0343ac214c1b0f1ac19f93e1175b2dee38c73d"
+
 [[package]]
 name = "sigma_fun"
 version = "0.1.3-alpha.0"
 source = "git+https://github.com/LLFourn/secp256kfun#8538ef22498170960a9769df2700c1986cc540fd"
 dependencies = [
- "curve25519-dalek",
+    "curve25519-dalek",
- "digest 0.9.0",
+    "digest 0.9.0",
- "generic-array 0.14.4",
+    "generic-array 0.14.4",
- "rand_core 0.5.1",
+    "rand_core 0.5.1",
  "secp256kfun",
  "serde",
 ]
@@ -3716,9 +3831,18 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edd106a334b7657c10b7c540a0106114feadeb4dc314513e97df481d5d966f42"
 dependencies = [
- "byteorder",
+    "byteorder",
- "dirs",
+    "dirs",
- "winapi 0.3.9",
+    "winapi 0.3.9",
+]
+
+[[package]]
+name = "termcolor"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
+dependencies = [
+    "winapi-util",
 ]
 
 [[package]]
@@ -3727,8 +3851,8 @@ version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "86ca8ced750734db02076f44132d802af0b33b09942331f4459dde8636fd2406"
 dependencies = [
- "libc",
+    "libc",
- "winapi 0.3.9",
+    "winapi 0.3.9",
 ]
 
 [[package]]
@@ -4468,7 +4592,16 @@ version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82015b7e0b8bad8185994674a13a93306bea76cf5a16c5a181382fd3a5ec2376"
 dependencies = [
- "webpki",
+    "webpki",
+]
+
+[[package]]
+name = "which"
+version = "3.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d011071ae14a2f6671d0b74080ae0cd8ebf3a6f8c9589a2cd45f23126fe29724"
+dependencies = [
+    "libc",
 ]
 
 [[package]]
@@ -4477,8 +4610,8 @@ version = "4.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "87c14ef7e1b8b8ecfc75d5eca37949410046e66f15d185c01d70824f1f8111ef"
 dependencies = [
- "libc",
+    "libc",
- "thiserror",
+    "thiserror",
 ]
 
 [[package]]
@@ -4515,6 +4648,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+    "winapi 0.3.9",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"

monero-adaptor/Cargo.toml

@@ -13,3 +13,7 @@ curve25519-dalek = "3"
 rand = "0.7"
 nazgul = "0.1"
 sha2 = "0.9"
+
+[build-dependencies]
+bindgen = "0.58"
+cc = "1"

monero-adaptor/build.rs

@@ -0,0 +1,38 @@
+extern crate bindgen;
+
+use std::env;
+use std::path::PathBuf;
+
+fn main() {
+    // Tell cargo to invalidate the built crate whenever the wrapper changes
+    println!("cargo:rerun-if-changed=depend/hash");
+
+    let mut base_config = cc::Build::new();
+    base_config.include("depend/hash");
+    base_config.file("depend/hash/hash.c");
+    base_config.compile("hash");
+
+    println!("cargo:rustc-link-lib=static=hash");
+
+    // The bindgen::Builder is the main entry point
+    // to bindgen, and lets you build up options for
+    // the resulting bindings.
+
+    let bindings = bindgen::Builder::default()
+        // The input header we would like to generate
+        // bindings for.
+        .header("depend/hash/hash.h")
+        // Tell cargo to invalidate the built crate whenever any of the
+        // included header files changed.
+        .parse_callbacks(Box::new(bindgen::CargoCallbacks))
+        // Finish the builder and generate the bindings.
+        .generate()
+        // Unwrap the Result and panic on failure.
+        .expect("Unable to generate bindings");
+
+    // Write the bindings to the $OUT_DIR/bindings.rs file.
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+    bindings
+        .write_to_file(out_path.join("bindings.rs"))
+        .expect("Couldn't write bindings!");
+}

monero-adaptor/depend/hash/hash.c

@@ -0,0 +1,9 @@
+//
+// Created by Rishab Sharma on 16/4/21.
+//
+
+#include "hash.h"
+
+float add(float a, float b) {
+    return (a + b);
+}

monero-adaptor/depend/hash/hash.h

@@ -0,0 +1,10 @@
+//
+// Created by Rishab Sharma on 16/4/21.
+//
+
+#ifndef XMR_BTC_SWAP_COMIT_HASH_H
+#define XMR_BTC_SWAP_COMIT_HASH_H
+
+float add(float a, float b);
+
+#endif //XMR_BTC_SWAP_COMIT_HASH_H

monero-adaptor/src/lib.rs

@@ -1,6 +1,8 @@
 #![allow(non_snake_case)]
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
 
-use std::convert::{TryFrom, TryInto};
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 
 use anyhow::{bail, Result};
 use curve25519_dalek::constants::RISTRETTO_BASEPOINT_POINT;
@@ -9,6 +11,7 @@ use curve25519_dalek::ristretto::RistrettoPoint;
 use curve25519_dalek::scalar::Scalar;
 use rand::rngs::OsRng;
 use sha2::Sha512;
+use std::convert::{TryFrom, TryInto};
 
 const RING_SIZE: usize = 11;
 const KEY_TAG: &str = "CSLAG_0";
@@ -694,3 +697,14 @@ mod tests {
         // ));
     }
 }
+
+#[cfg(test)]
+mod tests2 {
+    use super::*;
+
+    #[test]
+    fn test_add() {
+        let a = unsafe { add(3.0, 2.0) };
+        dbg!(a);
+    }
+}