From: Charlie Brej <cbrej@cs.man.ac.uk>
Date: Sat, 3 Jan 2009 15:58:39 +0000 (+0000)
Subject: Make Ctrl+C and Ctrl+D cause the password/question entry to quit
X-Git-Tag: 0.7.0~234
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2404b991adb7b694fa7d35b52af53fc32790dbc;p=thirdparty%2Fplymouth.git

Make Ctrl+C and Ctrl+D cause the password/question entry to quit

When asking for a password or a question, if the user presses Ctrl+C or Ctrl+D
the backend will reply a NULL. This is interprited as a "Stop asking me". The
client will not repeat the request (even if number of retries hasn't been
reached) and quit with an error exit_status.
---

diff --git a/src/client/plymouth.c b/src/client/plymouth.c
index 7128264d..c181dadc 100644
--- a/src/client/plymouth.c
+++ b/src/client/plymouth.c
@@ -178,34 +178,39 @@ on_password_answer (password_answer_state_t   *answer_state,
 {
   int exit_status;
 
-  exit_status = 0;
-  if (answer_state->command != NULL)
+  exit_status = 127;
+  if (answer != NULL)  /* a NULL answer means the user quit */
     {
-      bool command_started = false;
-
-      exit_status = 127;
-      command_started = answer_via_command (answer_state->command, answer,
-                                            &exit_status);
-
-      if (command_started && (!WIFEXITED (exit_status) ||
-          WEXITSTATUS (exit_status) != 0))
+      if (answer_state->command != NULL)
         {
-          answer_state->number_of_tries_left--;
+          bool command_started = false;
 
-          if (answer_state->number_of_tries_left > 0)
+          command_started = answer_via_command (answer_state->command, answer,
+                                                &exit_status);
+
+          if (command_started && (!WIFEXITED (exit_status) ||
+              WEXITSTATUS (exit_status) != 0))
             {
-              ply_boot_client_ask_daemon_for_password (answer_state->state->client,
-                                                       answer_state->prompt,
-                                                       (ply_boot_client_answer_handler_t)
-                                                       on_password_answer,
-                                                       (ply_boot_client_response_handler_t)
-                                                       on_password_answer_failure, answer_state);
-              return;
+              answer_state->number_of_tries_left--;
+
+              if (answer_state->number_of_tries_left > 0)
+                {
+                  ply_boot_client_ask_daemon_for_password (answer_state->state->client,
+                                                           answer_state->prompt,
+                                                           (ply_boot_client_answer_handler_t)
+                                                           on_password_answer,
+                                                           (ply_boot_client_response_handler_t)
+                                                           on_password_answer_failure, answer_state);
+                  return;
+                }
             }
         }
+      else
+        {
+          write (STDOUT_FILENO, answer, strlen (answer));
+          exit_status = 0;
+        }
     }
-  else
-    write (STDOUT_FILENO, answer, strlen (answer));
 
   if (WIFSIGNALED (exit_status))
     raise (WTERMSIG (exit_status));
@@ -218,19 +223,20 @@ on_question_answer (question_answer_state_t   *answer_state,
                    const char                 *answer,
                    ply_boot_client_t          *client)
 {
-  if (answer_state->command != NULL)
+  if (answer != NULL)
     {
-      answer_via_command (answer_state->command, answer, NULL);
+      if (answer_state->command != NULL)
+        {
+          answer_via_command (answer_state->command, answer, NULL);
+        }
+      else
+        {
+          write (STDOUT_FILENO, answer, strlen (answer));
+        }
+      ply_event_loop_exit (answer_state->state->loop, 0);
     }
   else
-    {
-      if (answer)
-        write (STDOUT_FILENO, answer, strlen (answer));
-    }
-
-  if (answer)
-    ply_event_loop_exit (answer_state->state->loop, 0);
-  ply_event_loop_exit (answer_state->state->loop, 1);
+    ply_event_loop_exit (answer_state->state->loop, 1);
 }
 
 static void
diff --git a/src/main.c b/src/main.c
index 003a59b6..fa612ed8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -630,8 +630,19 @@ on_keyboard_input (state_t                  *state,
   ply_list_node_t *node;
   node = ply_list_get_first_node (state->entry_triggers);
   if (node)
-    {
-      ply_buffer_append_bytes (state->entry_buffer, keyboard_input, character_size);
+    {               /* \x3 (ETX) is Ctrl+C and \x4 (EOT) is Ctrl+D */
+      if (character_size == 1 && ( keyboard_input[0] == '\x3' || keyboard_input[0] == '\x4' ))
+        {
+          ply_entry_trigger_t* entry_trigger = ply_list_node_get_data (node);
+          ply_trigger_pull (entry_trigger->trigger, NULL);
+          ply_buffer_clear (state->entry_buffer);
+          ply_list_remove_node (state->entry_triggers, node);
+          free (entry_trigger);
+        }
+      else
+        {
+          ply_buffer_append_bytes (state->entry_buffer, keyboard_input, character_size);
+        }
       update_display (state);
     }
   else
@@ -651,6 +662,7 @@ on_keyboard_input (state_t                  *state,
       return;
     }
 }
+
 void
 on_backspace (state_t                  *state)
 {
@@ -686,12 +698,11 @@ on_enter (state_t                  *state,
       ply_trigger_pull (entry_trigger->trigger, reply_text);
       ply_buffer_clear (state->entry_buffer);
       ply_list_remove_node (state->entry_triggers, node);
-      free(entry_trigger);
+      free (entry_trigger);
       update_display (state);
     }
 }
 
-
 static ply_window_t *
 create_window (state_t    *state,
                const char *tty_name)