assert IDA version

closes #179

capa/ida/ida_capa_explorer.py

@@ -25,6 +25,14 @@ from capa.ida.explorer.proxy import CapaExplorerSortFilterProxyModel
 
 PLUGIN_NAME = "capa explorer"
 
+SUPPORTED_IDA_VERSIONS = [
+    "7.1",
+    "7.2",
+    "7.3",
+    "7.4",
+    "7.5",
+]
+
 logger = logging.getLogger("capa")
 
 
@@ -545,10 +553,26 @@ class CapaExplorerForm(idaapi.PluginForm):
         self.view_tree.resize_columns_to_content()
 
 
+def is_supported_ida_version():
+    version = idaapi.get_kernel_version()
+    if version not in SUPPORTED_IDA_VERSIONS:
+        warning_msg = "This plugin does not support your IDA Pro version"
+        logger.warning(warning_msg)
+        logger.warning(
+            "Your IDA Pro version is: %s. Supported versions are: %s." % (version, ", ".join(SUPPORTED_IDA_VERSIONS))
+        )
+        capa.ida.helpers.inform_user_ida_ui(warning_msg)
+        return False
+    return True
+
+
 def main():
     """ TODO: move to idaapi.plugin_t class """
     logging.basicConfig(level=logging.INFO)
 
+    if not is_supported_ida_version():
+        return -1
+
     if not capa.ida.helpers.is_supported_file_type():
         return -1