Add OMEMO policy

There is 3 policy:

- manual: OMEMO session are only started manually
- automatic: OMEMO session are only started if they have been started
  manually before
- always: OMEMO session are always started unless they have been ended
  manually before

Closes #1040 and fixes #1052

src/ui/chatwin.c

@@ -50,6 +50,9 @@
 #ifdef HAVE_LIBOTR
 #include "otr/otr.h"
 #endif
+#ifdef HAVE_OMEMO
+#include "omemo/omemo.h"
+#endif
 
 static void _chatwin_history(ProfChatWin *chatwin, const char *const contact);
 
@@ -73,6 +76,13 @@ chatwin_new(const char *const barejid)
         }
     }
 
+#ifdef HAVE_OMEMO
+    if (omemo_automatic_start(barejid)) {
+        omemo_start_session(barejid);
+        chatwin->is_omemo = TRUE;
+    }
+#endif
+
     return chatwin;
 }
 

src/ui/console.c

@@ -2004,6 +2004,10 @@ cons_show_omemo_prefs(void)
     cons_show("OMEMO preferences:");
     cons_show("");
 
+    char *policy_value = prefs_get_string(PREF_OMEMO_POLICY);
+    cons_show("OMEMO policy (/omemo policy) : %s", policy_value);
+    prefs_free_string(policy_value);
+
     char *log_value = prefs_get_string(PREF_OMEMO_LOG);
     if (strcmp(log_value, "on") == 0) {
         cons_show("OMEMO logging (/omemo log)   : ON");

src/ui/core.c

@@ -763,7 +763,7 @@ ui_room_join(const char *const roomjid, gboolean focus)
 {
     ProfMucWin *mucwin = wins_get_muc(roomjid);
     if (mucwin == NULL) {
-        mucwin = (ProfMucWin*)wins_new_muc(roomjid);
+        mucwin = mucwin_new(roomjid);
     }
     ProfWin *window = (ProfWin*)mucwin;
 

src/ui/mucwin.c

@@ -44,6 +44,25 @@
 #include "ui/window.h"
 #include "ui/win_types.h"
 #include "ui/window_list.h"
+#ifdef HAVE_OMEMO
+#include "omemo/omemo.h"
+#endif
+
+ProfMucWin*
+mucwin_new(const char *const barejid)
+{
+    ProfWin *window = wins_new_muc(barejid);
+    ProfMucWin *mucwin = (ProfMucWin *)window;
+
+#ifdef HAVE_OMEMO
+    if (omemo_automatic_start(barejid)) {
+        omemo_start_muc_sessions(barejid);
+        mucwin->is_omemo = TRUE;
+    }
+#endif
+
+    return mucwin;
+}
 
 void
 mucwin_role_change(ProfMucWin *mucwin, const char *const role, const char *const actor, const char *const reason)

src/ui/ui.h

@@ -149,6 +149,7 @@ void chatwin_set_outgoing_char(ProfChatWin *chatwin, const char *const ch);
 void chatwin_unset_outgoing_char(ProfChatWin *chatwin);
 
 // MUC window
+ProfMucWin* mucwin_new(const char *const barejid);
 void mucwin_role_change(ProfMucWin *mucwin, const char *const role, const char *const actor, const char *const reason);
 void mucwin_affiliation_change(ProfMucWin *mucwin, const char *const affiliation, const char *const actor,
     const char *const reason);