fix: restore original simple_refrig_api and platform path fixes

app/ipm/simple_refrig_api.py

@@ -101,7 +101,7 @@ class GenRefProperties(Structure):
 
 
 if os.name == 'nt':
-    REFIFC_LIB_NAME = "refifc"
+    REFIFC_LIB_NAME = "refifc.dll"
 else:  # 'posix'
     REFIFC_LIB_NAME = "librefifc.so"
 
@@ -113,10 +113,10 @@ class Refifc(object):
         # Sauvegardez le répertoire courant pour pouvoir y revenir plus tard
         self.original_directory = os.getcwd()
         # Determine candidate directories for the native library. Prefer
-        # app/ipm/lib/<platform> if present, otherwise fall back to the
-        # package directory (for compatibility with older layouts).
+        # app/ipm/lib/dll (Windows) or app/ipm/lib/so (POSIX) if present,
+        # otherwise fall back to the package directory (for compatibility).
         package_dir = os.path.dirname(os.path.abspath(__file__))
-        platform_dir = os.path.join(package_dir, 'lib', 'windows' if os.name == 'nt' else 'linux')
+        platform_dir = os.path.join(package_dir, 'lib', 'dll' if os.name == 'nt' else 'so')
         dll_directory = platform_dir if os.path.isdir(platform_dir) else package_dir
 
         # Change working directory to the chosen directory while loading
@@ -124,13 +124,22 @@ class Refifc(object):
 
         # Try to load the native library from the chosen directory; if that
         # fails, attempt to load by name (for system-installed libs) and
-        # otherwise raise the original exception.
+        # otherwise raise the original exception. Use RTLD_GLOBAL on POSIX
+        # to make symbols available for dependent shared objects.
         try:
-            self.lib = ctypes.cdll.LoadLibrary(os.path.join(dll_directory, REFIFC_LIB_NAME))
+            full_lib_path = os.path.join(dll_directory, REFIFC_LIB_NAME)
+            if os.name == 'nt':
+                self.lib = ctypes.cdll.LoadLibrary(full_lib_path)
+            else:
+                # Use RTLD_GLOBAL so dependent .so files can resolve symbols
+                self.lib = ctypes.CDLL(full_lib_path, mode=ctypes.RTLD_GLOBAL)
         except OSError:
             try:
-                self.lib = ctypes.cdll.LoadLibrary(REFIFC_LIB_NAME)
-            except Exception as e:
+                if os.name == 'nt':
+                    self.lib = ctypes.cdll.LoadLibrary(REFIFC_LIB_NAME)
+                else:
+                    self.lib = ctypes.CDLL(REFIFC_LIB_NAME, mode=ctypes.RTLD_GLOBAL)
+            except Exception:
                 # Restore cwd before raising
                 os.chdir(self.original_directory)
                 raise
@@ -145,12 +154,24 @@ class Refifc(object):
         try:
             ctypes.CDLL(os.path.join(dll_directory, REFIFC_LIB_NAME))
         except OSError:
+            # best-effort warning; not fatal here (the main loader already succeeded)
             print(f"Refrig {refrig_name} not found, please check!")
 
         func = self.lib.refdll_load
         func.restype = POINTER(c_void_p)
         func.argtypes = [c_char_p, c_void_p]
-        self.handle = func(c_char_p(refrig_name.encode('utf-8')), c_void_p())
+        # On POSIX the native loader often expects the full SO filename
+        # (e.g. "libR290.so"). We built `ctypes_refrig_name` above to match
+        # that convention; use it when calling the native loader.
+        name_to_pass = ctypes_refrig_name if ctypes_refrig_name else refrig_name
+        try:
+            self.handle = func(c_char_p(name_to_pass.encode('utf-8')), c_void_p())
+        finally:
+            # restore cwd even if the native call raises
+            try:
+                os.chdir(self.original_directory)
+            except Exception:
+                pass
 
     # def __del__(self):