pause - do not continue with '\r' when timeout is set (#74030)

Original function of pause was, to only allow user input
(finished with enter) when no timeout was set. This restores
the behaviour.

changelogs/fragments/73948-pause-no-enter-with-timeout.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - pause - do not accept enter to continue when a timeout is set (https://github.com/ansible/ansible/issues/73948)

lib/ansible/plugins/action/pause.py

@@ -246,19 +246,20 @@ class ActionModule(ActionBase):
                         clear_line(stdout)
                         raise KeyboardInterrupt
 
-                    # read key presses and act accordingly
-                    if key_pressed in (b'\r', b'\n'):
-                        clear_line(stdout)
-                        break
-                    elif key_pressed in backspace:
-                        # delete a character if backspace is pressed
-                        result['user_input'] = result['user_input'][:-1]
-                        clear_line(stdout)
-                        if echo:
-                            stdout.write(result['user_input'])
-                        stdout.flush()
-                    else:
-                        result['user_input'] += key_pressed
+                    if not seconds:
+                        # read key presses and act accordingly
+                        if key_pressed in (b'\r', b'\n'):
+                            clear_line(stdout)
+                            break
+                        elif key_pressed in backspace:
+                            # delete a character if backspace is pressed
+                            result['user_input'] = result['user_input'][:-1]
+                            clear_line(stdout)
+                            if echo:
+                                stdout.write(result['user_input'])
+                            stdout.flush()
+                        else:
+                            result['user_input'] += key_pressed
 
                 except KeyboardInterrupt:
                     signal.alarm(0)

test/integration/targets/pause/test-pause.py

@@ -274,3 +274,19 @@ pause_test.send('supersecretpancakes')
 pause_test.send('\r')
 pause_test.expect(pexpect.EOF)
 pause_test.close()
+
+
+# Test that enter presses may not continue the play when a timeout is set.
+
+pause_test = pexpect.spawn(
+    'ansible-playbook',
+    args=["pause-3.yml"] + args,
+    timeout=10,
+    env=os.environ
+)
+
+pause_test.logfile = log_buffer
+pause_test.expect(r"\(ctrl\+C then 'C' = continue early, ctrl\+C then 'A' = abort\)")
+pause_test.send('\r')
+pause_test.expect(pexpect.EOF)
+pause_test.close()