add default_persistence_allowed

In addition set all config options in every test, as catch2 can run
tests out of order and as demonstrated in
e1ad60af4f this can be an issue

CHANGELOG.rst

@@ -19,8 +19,9 @@ For admins
 ----------
 - Command line option --test-config (or -t) has been added. When used,
   biboumi will just exit without any error if the configuration is correct
-- Options persist_user_denylist and persist_user_allowlist have been added to
-  granualy control who can set the persist option
+- Options default_persistence_allowed, persist_user_denylist, and
+  persist_user_allowlist have been added to granualy control who can set the
+  persist option
 
 For packagers
 -------------

doc/admin.rst

@@ -260,6 +260,12 @@ persist_user_allowlist
 A list of XMPP XMPP users or domains who are allowed to change the `persist`
 ad-hoc option.
 
+default_persistence_allowed
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If a given XMPP user or domain is not in either denylist or allowlist this
+option decides if the user is allowed to persist or not.
+
 TLS configuration
 -----------------
 

src/utils/is_requester_allowed_to_persist.hpp

@@ -19,7 +19,7 @@ namespace utils
  * 2. `persist_user_allowlist` contains the requester's jid
  * 3. `persist_user_denylist` contains the requester's domain
  * 4. `persist_user_allowlist` contains the contains the requester's domain
- * 5. allow
+ * 5. `default_persistence_allowed` is true (default true)
  */
 inline bool is_requester_allowed_to_persist(const Jid &requester) {
   // requester.bare checks
@@ -50,6 +50,6 @@ inline bool is_requester_allowed_to_persist(const Jid &requester) {
 
   // default allow
   // 5.
-  return true;
+  return Config::get_bool("default_persistence_allowed", true);
 }
 }

tests/is_requester_allowed_to_persist.cpp

@@ -9,6 +9,31 @@ TEST_CASE("default")
   Config::clear();
   Config::set("persist_user_denylist", "");
   Config::set("persist_user_allowlist", "");
+  Config::set("default_persistence_allowed", "");
+  bool result = utils::is_requester_allowed_to_persist(jid);
+  CHECK(result == true);
+  Config::clear();
+}
+
+TEST_CASE("default - default_persistence_allowed - false")
+{
+  Jid jid("foo@example.com");
+  Config::clear();
+  Config::set("persist_user_denylist", "");
+  Config::set("persist_user_allowlist", "");
+  Config::set("default_persistence_allowed", "false");
+  bool result = utils::is_requester_allowed_to_persist(jid);
+  CHECK(result == false);
+  Config::clear();
+}
+
+TEST_CASE("default - default_persistence_allowed - true")
+{
+  Jid jid("foo@example.com");
+  Config::clear();
+  Config::set("persist_user_denylist", "");
+  Config::set("persist_user_allowlist", "");
+  Config::set("default_persistence_allowed", "true");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == true);
   Config::clear();
@@ -19,6 +44,8 @@ TEST_CASE("denylist - jid")
   Jid jid("foo@example.com");
   Config::clear();
   Config::set("persist_user_denylist", "foo@example.com");
+  Config::set("persist_user_allowlist", "");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == false);
   Config::clear();
@@ -29,6 +56,8 @@ TEST_CASE("denylist - domain")
   Jid jid("foo@example.com");
   Config::clear();
   Config::set("persist_user_denylist", "example.com");
+  Config::set("persist_user_allowlist", "");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == false);
   Config::clear();
@@ -39,6 +68,8 @@ TEST_CASE("allowlist - jid")
   Jid jid("foo@example.com");
   Config::clear();
   Config::set("persist_user_allowlist", "foo@example.com");
+  Config::set("persist_user_denylist", "");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == true);
   Config::clear();
@@ -49,6 +80,8 @@ TEST_CASE("allowlist - domain")
   Jid jid("foo@example.com");
   Config::clear();
   Config::set("persist_user_allowlist", "example.com");
+  Config::set("persist_user_denylist", "");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == true);
   Config::clear();
@@ -60,6 +93,7 @@ TEST_CASE("denylist + allowlist - deny domain, allow jid")
   Config::clear();
   Config::set("persist_user_denylist", "example.com");
   Config::set("persist_user_allowlist", "foo@example.com");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == true);
   Config::clear();
@@ -71,6 +105,7 @@ TEST_CASE("denylist + allowlist - deny jid, allow domain")
   Config::clear();
   Config::set("persist_user_denylist", "foo@example.com");
   Config::set("persist_user_allowlist", "example.com");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == false);
   Config::clear();
@@ -82,6 +117,7 @@ TEST_CASE("denylist + allowlist - deny jid, allow jid")
   Config::clear();
   Config::set("persist_user_denylist", "foo@example.com");
   Config::set("persist_user_allowlist", "foo@example.com");
+  Config::set("default_persistence_allowed", "");
   bool result = utils::is_requester_allowed_to_persist(jid);
   CHECK(result == false);
   Config::clear();