Add authentication dialog

Introduce start_auth_flow, a function invoked by typing `/auth username`
in OOC. It sends an public-key authentication request to the server,
starting the entire flow.

The flow invoves two dialogs: to select the key, and to enter the
passphrase to unlock the key. For convenience, each successful unlock
also remembers the key for that username on the server, storing this
in `saved_auth.json` (I chose JSON because I wanted it to stay
human-editable; INI would be better, but it suffers from bad platform
quirks in Qt).

1 files changed, 3 insertions, 0 deletions

diff --git a/src/aoapplication.h b/src/aoapplication.h
index 548d4d0..d8d0c00 100644
--- a/src/aoapplication.h
+++ b/src/aoapplication.h
@@ -6,6 +6,7 @@
 #include "discord_rich_presence.h"
 #include "ext_packet.h"
 #include "keyring.h"
+#include "saved_auth.h"
 #include "serverdata.h"
 #include "widgets/aooptionsdialog.h"
 
@@ -345,6 +346,8 @@ public:
   ma_decoder_config mus_decoder_config;
 
   KeyringModel keyring_model;
+  SavedAuth saved_auth;
+  QString ex_auth_username;
 
 private:
   QVector<ServerInfo> server_list;