Setup a NULL provider

Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com>

 # libparsec_openssl_provider_shared
  #  name: Parsec OpenSSL Provider
   # version: 0.1.0
   # status: active

Author: gowthamsk-arm

.gitignore

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+/target
+Cargo.lock
+.vscode
+*/Cargo.lock
+*/target

ci.sh

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+#!/usr/bin/env bash
+
+# Copyright 2023 Contributors to the Parsec project.
+# SPDX-License-Identifier: Apache-2.0
+
+set -ex
+
+openssl version
+openssl list -providers -provider-path ./parsec-openssl-provider-shared/target/debug/ -provider libparsec_openssl_provider_shared

openssl-sys2/Cargo.toml

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+[package]
+name = "openssl-sys2"
+version = "0.1.0"
+license = "Apache-2.0"
+authors = ["Parsec maintainers"]
+edition = "2021"
+

openssl-sys2/src/lib.rs

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+// Copyright 2023 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+#![allow(non_camel_case_types)]
+
+mod types;
+pub use types::*;

openssl-sys2/src/types.rs

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+// Copyright 2023 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+pub const OSSL_PROV_PARAM_NAME: &[u8; 5] = b"name\0";
+pub const OSSL_PROV_PARAM_VERSION: &[u8; 8] = b"version\0";
+pub const OSSL_PROV_PARAM_BUILDINFO: &[u8; 10] = b"buildinfo\0";
+pub const OSSL_PROV_PARAM_STATUS: &[u8; 7] = b"status\0";
+pub const OSSL_PARAM_UTF8_PTR: u32 = 6;
+pub const OSSL_PARAM_INTEGER: u32 = 1;
+
+pub const OSSL_FUNC_PROVIDER_TEARDOWN: i32 = 1024;
+pub const OSSL_FUNC_PROVIDER_GETTABLE_PARAMS: i32 = 1025;
+pub const OSSL_FUNC_PROVIDER_GET_PARAMS: i32 = 1026;
+pub const OSSL_FUNC_PROVIDER_QUERY_OPERATION: i32 = 1027;
+pub const OSSL_FUNC_PROVIDER_UNQUERY_OPERATION: i32 = 1028;
+pub const OSSL_FUNC_PROVIDER_GET_REASON_STRINGS: i32 = 1029;
+pub const OSSL_FUNC_PROVIDER_GET_CAPABILITIES: i32 = 1030;
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct ossl_core_handle_st {
+    _unused: [u8; 0],
+}
+pub type OSSL_CORE_HANDLE = ossl_core_handle_st;
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct ossl_dispatch_st {
+    pub function_id: ::std::os::raw::c_int,
+    pub function: ::std::option::Option<fn()>,
+}
+
+pub type OSSL_DISPATCH = ossl_dispatch_st;
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct ossl_param_st {
+    pub key: *const ::std::os::raw::c_char,
+    pub data_type: ::std::os::raw::c_uint,
+    pub data: *mut ::std::os::raw::c_void,
+    pub data_size: usize,
+    pub return_size: usize,
+}
+
+pub type OSSL_PARAM = ossl_param_st;
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct ossl_algorithm_st {
+    pub algorithm_names: *const ::std::os::raw::c_char,
+    pub property_definition: *const ::std::os::raw::c_char,
+    pub implementation: *const OSSL_DISPATCH,
+    pub algorithm_description: *const ::std::os::raw::c_char,
+}
+
+pub type OSSL_ALGORITHM = ossl_algorithm_st;
+
+extern "C" {
+    pub fn OSSL_PARAM_locate(
+        p: *mut OSSL_PARAM,
+        key: *const ::std::os::raw::c_char,
+    ) -> *mut OSSL_PARAM;
+
+    pub fn OSSL_PARAM_set_utf8_ptr(
+        p: *mut OSSL_PARAM,
+        val: *const ::std::os::raw::c_char,
+    ) -> ::std::os::raw::c_int;
+
+    pub fn OSSL_PARAM_set_int(
+        p: *mut OSSL_PARAM,
+        val: ::std::os::raw::c_int,
+    ) -> ::std::os::raw::c_int;
+}

openssl2/Cargo.toml

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+[package]
+name = "openssl2"
+version = "0.1.0"
+license = "Apache-2.0"
+authors = ["Parsec maintainers"]
+edition = "2021"

openssl2/src/lib.rs

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+// Copyright 2023 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+pub fn openssl_returns_0(result: std::os::raw::c_int) -> bool {
+    if result == 0 {
+        true
+    } else {
+        false
+    }
+}

parsec-openssl-provider-shared/Cargo.toml

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+[package]
+name = "parsec-openssl-provider-shared"
+version = "0.1.0"
+authors = ["Parsec Project Contributors"]
+description = "A parsec openssl provider dynamic library"
+license = "Apache-2.0"
+readme = "README.md"
+keywords = ["security", "service"]
+categories = ["cryptography", "hardware-support"]
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+openssl-sys = "0.9.98"
+openssl-sys2 = { path = "../openssl-sys2" }
+parsec-openssl-provider = { path ="../parsec-openssl-provider" }

parsec-openssl-provider-shared/src/lib.rs

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+// Copyright 2023 Contributors to the Parsec project.
+// SPDX-License-Identifier: Apache-2.0
+
+use parsec_openssl_provider;
+
+#[allow(non_upper_case_globals)]
+#[allow(non_snake_case)]
+#[allow(dead_code)]
+#[no_mangle]
+extern "C" fn OSSL_provider_init(
+    handle: *const openssl_sys2::OSSL_CORE_HANDLE,
+    in_: *const openssl_sys2::OSSL_DISPATCH,
+    out: *mut *const openssl_sys2::OSSL_DISPATCH,
+    provctx: *mut *mut std::os::raw::c_void,
+) -> ::std::os::raw::c_int {
+    parsec_openssl_provider::parsec_provider_provider_init(handle, in_, out, provctx)
+}

parsec-openssl-provider/Cargo.toml

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+[package]
+name = "parsec-openssl-provider"
+version = "0.1.0"
+authors = ["Parsec Project Contributors"]
+description = "A parsec openssl provider static library"
+license = "Apache-2.0"
+readme = "README.md"
+keywords = ["security", "service"]
+categories = ["cryptography", "hardware-support"]
+edition = "2021"
+
+[dependencies]
+openssl-sys = "0.9.98"
+openssl-sys2 = { path = "../openssl-sys2" }
+openssl2 = { path = "../openssl2" }