From 8c640a262969ef44cd8bc0e0abe95e2a54f4c3f5 Mon Sep 17 00:00:00 2001
From: Marcos Magueta <maguetamarcos@gmail.com>
Date: Thu, 5 Mar 2026 23:42:15 -0300
Subject: ocaml re-migration

---
 shared/librelational_engine/CMakeLists.txt | 11 +++++++++++
 shared/librelational_engine/library.cpp    | 23 +++++++++++++++++++++++
 shared/librelational_engine/library.h      |  8 ++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 shared/librelational_engine/CMakeLists.txt
 create mode 100644 shared/librelational_engine/library.cpp
 create mode 100644 shared/librelational_engine/library.h

(limited to 'shared')

diff --git a/shared/librelational_engine/CMakeLists.txt b/shared/librelational_engine/CMakeLists.txt
new file mode 100644
index 0000000..22c8444
--- /dev/null
+++ b/shared/librelational_engine/CMakeLists.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.29)
+project(relational_engine)
+
+include_directories($ENV{LIBRESSL_INCLUDE_PATH})
+
+add_library(relational_engine SHARED library.cpp)
+
+target_link_libraries(relational_engine
+        $ENV{LIBRESSL_LIB_PATH}/libssl.$ENV{OS_LIB_EXTENSION}
+        $ENV{LIBRESSL_LIB_PATH}/libcrypto.$ENV{OS_LIB_EXTENSION}
+)
\ No newline at end of file
diff --git a/shared/librelational_engine/library.cpp b/shared/librelational_engine/library.cpp
new file mode 100644
index 0000000..a9b4c81
--- /dev/null
+++ b/shared/librelational_engine/library.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <openssl/sha.h>
+#include <iomanip>
+#include <sstream>
+#include <cstring>
+
+#include <sys/stat.h>
+
+extern "C" {
+#include "library.h"
+
+    extern void compute_hash(char* computed_hash, const char *content) {
+        unsigned char hash[SHA256_DIGEST_LENGTH];
+        SHA256_CTX sha256;
+        SHA256_Init(&sha256);
+        SHA256_Update(&sha256, content, std::strlen(content));
+        SHA256_Final(hash, &sha256);
+        std::stringstream ss;
+        for (int i = 0; i < SHA256_DIGEST_LENGTH; i++)
+            ss << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(hash[i]);
+        std::memcpy(computed_hash, ss.str().c_str(), HASH_SIZE);
+    }
+}
diff --git a/shared/librelational_engine/library.h b/shared/librelational_engine/library.h
new file mode 100644
index 0000000..cae22cb
--- /dev/null
+++ b/shared/librelational_engine/library.h
@@ -0,0 +1,8 @@
+#ifndef RELATIONAL_ENGINE_LIBRARY_H
+#define RELATIONAL_ENGINE_LIBRARY_H
+
+#define HASH_SIZE 64
+
+extern void compute_hash(char*, const char*);
+
+#endif //RELATIONAL_ENGINE_LIBRARY_H
-- 
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