chore: setup sesam-vitale lib with crossplatform ssv usage

crates/sesam-vitale/src/ssvlib_demo.rs

@@ -0,0 +1,84 @@
+extern crate libc;
+extern crate dotenv;
+
+use libc::{ c_char, c_void, c_ushort, size_t };
+use std::ffi::CString;
+use std::ptr;
+
+use dotenv::dotenv;
+use std::env;
+
+extern "C" {
+    fn SSV_InitLIB2(pcRepSesamIni: *const c_char) -> c_ushort;
+    fn SSV_LireCartePS(NomRessourcePS: *const c_char, NomRessourceLecteur: *const c_char, CodePorteurPS: *const c_char, ZDonneesSortie: *mut *mut c_void, TTailleDonneesSortie: *mut size_t) -> c_ushort;
+    fn SSV_LireConfig(ZDonneesSortie: *mut *mut c_void, TTailleDonneesSortie: *mut size_t) -> c_ushort;
+}
+
+fn ssv_init_lib_2() {
+    let ini_str = env::var("SESAM_INI_PATH").expect("SESAM_INI_PATH must be set");
+    let ini = CString::new(ini_str).expect("CString::new failed");
+    unsafe {
+        let result = SSV_InitLIB2(ini.as_ptr());
+        println!("SSV_InitLIB2 result: {}", result);
+    }
+}
+
+fn ssv_lire_carte_ps() {
+    let resource_ps = CString::new("PS").expect("CString::new failed");
+    let resource_reader = CString::new("TRANSPA1").expect("CString::new failed");
+    let card_number = CString::new("1234567890").expect("CString::new failed");
+
+    let mut buffer: *mut c_void = ptr::null_mut();
+    let mut size: size_t = 0;
+    unsafe {
+        let result = SSV_LireCartePS(
+            resource_ps.as_ptr(),
+            resource_reader.as_ptr(),
+            card_number.as_ptr(),
+            &mut buffer,
+            &mut size
+        );
+        println!("SSV_LireCartePS result: {}", result);
+
+        if !buffer.is_null() {
+            let hex_values = std::slice::from_raw_parts(buffer as *const u8, size);
+            for &byte in hex_values {
+                print!("{:02X} ", byte);
+            }
+            println!();
+
+            libc::free(buffer);
+        }
+    }
+}
+
+fn ssv_lire_config() {
+    let mut buffer: *mut c_void = ptr::null_mut();
+    let mut size: size_t = 0;
+    unsafe {
+        let result = SSV_LireConfig(&mut buffer, &mut size);
+        println!("SSV_LireConfig result: {}", result);
+
+        if !buffer.is_null() {
+            let hex_values = std::slice::from_raw_parts(buffer as *const u8, size);
+            for &byte in hex_values {
+                print!("{:02X} ", byte);
+            }
+            println!();
+
+            libc::free(buffer);
+        }
+    }
+}
+
+pub fn demo() {
+    dotenv().ok();
+
+    println!("------- Demo for the SSV library --------");
+
+    ssv_init_lib_2();
+    ssv_lire_carte_ps();
+    ssv_lire_config();
+
+    println!("-----------------------------------------");
+}