python/sepolicy/sepolicy: optimise sepolicy gui loading

Significantly speed up sepolicy gui loading by aggregating setools
queries.

Signed-off-by: Vit Mojzis <vmojzis@redhat.com>

python/sepolicy/sepolicy/__init__.py

@@ -663,6 +663,23 @@ def get_init_entrypoint(transtype):
 
     return entrypoints
 
+def get_init_entrypoints_str():
+    q = setools.TERuleQuery(_pol,
+                            ruletype=["type_transition"],
+                            source="init_t",
+                            tclass=["process"])
+    entrypoints = {}
+    for i in q.results():
+        try:
+            transtype = str(i.default)
+            if transtype in entrypoints:
+                entrypoints[transtype].append(str(i.target))
+            else:
+                entrypoints[transtype] = [str(i.target)]
+        except AttributeError:
+            continue
+
+    return entrypoints
 
 def get_init_entrypoint_target(entrypoint):
     try:

python/sepolicy/sepolicy/gui.py

@@ -499,6 +499,8 @@ class SELinuxGui():
 
         loading_gui.show()
         length = len(self.all_domains)
+
+        entrypoint_dict = sepolicy.get_init_entrypoints_str()
         for domain in self.all_domains:
             # After the user selects a path in the drop down menu call
             # get_init_entrypoint_target(entrypoint) to get the transtype
@@ -509,8 +511,7 @@ class SELinuxGui():
             self.progress_bar.set_pulse_step(self.percentage)
             self.idle_func()
 
-            entrypoints = [str(x) for x in sepolicy.get_init_entrypoint(domain)]
-            for entrypoint in entrypoints:
+            for entrypoint in entrypoint_dict.get(domain, []):
                 path = sepolicy.find_entrypoint_path(entrypoint)
                 if path:
                     self.combo_box_add(path, domain)