Attachment 35458 Details for Bug 27857 – Implement negotiation for maybe passing

[patch] Implement negotiation for maybe passing

0006-Implement-negotiation-for-maybe-passing.diff (text/plain), 13.75 KB, created by Christian Dywan on 2010-05-06 06:57:36 UTC

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Creator: Christian Dywan

Created: 2010-05-06 06:57:36 UTC

Size: 13.75 KB

patch

obsolete

>From 96a02c67bf3e767e0748e7bc952a7426b2868ad3 Mon Sep 17 00:00:00 2001
>From: Christian Dywan <christian.dywan@lanedo.com>
>Date: Thu, 6 May 2010 11:49:22 +0200
>Subject: [PATCH 6/7] Implement negotiation for maybe passing
>
>---
> dbus/dbus-auth.c                |  130 ++++++++++++++++++++++++++++++++++++++-
> dbus/dbus-auth.h                |    3 +
> dbus/dbus-connection.c          |   11 +++
> dbus/dbus-transport-protected.h |    2 +
> dbus/dbus-transport-socket.c    |    2 +
> dbus/dbus-transport.c           |   12 ++++
> dbus/dbus-transport.h           |    1 +
> 7 files changed, 158 insertions(+), 3 deletions(-)
>
>diff --git a/dbus/dbus-auth.c b/dbus/dbus-auth.c
>index 3173f34..5648d60 100644
>--- a/dbus/dbus-auth.c
>+++ b/dbus/dbus-auth.c
>@@ -126,7 +126,9 @@ typedef enum {
>   DBUS_AUTH_COMMAND_ERROR,
>   DBUS_AUTH_COMMAND_UNKNOWN,
>   DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD,
>-  DBUS_AUTH_COMMAND_AGREE_UNIX_FD
>+  DBUS_AUTH_COMMAND_AGREE_UNIX_FD,
>+  DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE,
>+  DBUS_AUTH_COMMAND_AGREE_MAYBE
> } DBusAuthCommand;
> 
> /**
>@@ -191,6 +193,9 @@ struct DBusAuth
> 
>   unsigned int unix_fd_possible : 1;  /**< This side could do unix fd passing */
>   unsigned int unix_fd_negotiated : 1; /**< Unix fd was successfully negotiated */
>+
>+  unsigned int maybe_possible : 1; /**< This side could do maybe passing */
>+  unsigned int maybe_negotiated : 1; /**< Maybe was successfully negotiated */
> };
> 
> /**
>@@ -234,6 +239,8 @@ static dbus_bool_t send_begin                (DBusAuth *auth);
> static dbus_bool_t send_cancel               (DBusAuth *auth);
> static dbus_bool_t send_negotiate_unix_fd    (DBusAuth *auth);
> static dbus_bool_t send_agree_unix_fd        (DBusAuth *auth);
>+static dbus_bool_t send_negotiate_maybe      (DBusAuth *auth);
>+static dbus_bool_t send_agree_maybe          (DBusAuth *auth);
> 
> /**
>  * Client states
>@@ -275,6 +282,9 @@ static dbus_bool_t handle_client_state_waiting_for_reject (DBusAuth         *aut
> static dbus_bool_t handle_client_state_waiting_for_agree_unix_fd (DBusAuth         *auth,
>                                                            DBusAuthCommand   command,
>                                                            const DBusString *args);
>+static dbus_bool_t handle_client_state_waiting_for_agree_maybe (DBusAuth         *auth,
>+                                                           DBusAuthCommand   command,
>+                                                           const DBusString *args);
> 
> static const DBusAuthStateData client_state_need_send_auth = {
>   "NeedSendAuth", NULL
>@@ -291,6 +301,9 @@ static const DBusAuthStateData client_state_waiting_for_reject = {
> static const DBusAuthStateData client_state_waiting_for_agree_unix_fd = {
>   "WaitingForAgreeUnixFD", handle_client_state_waiting_for_agree_unix_fd
> };
>+static const DBusAuthStateData client_state_waiting_for_agree_maybe = {
>+  "WaitingForAgreeMaybe", handle_client_state_waiting_for_agree_maybe
>+};
> 
> /**
>  * Common terminal states.  Terminal states have handler == NULL.
>@@ -1587,6 +1600,10 @@ process_ok(DBusAuth *auth,
>     return send_negotiate_unix_fd(auth);
> 
>   _dbus_verbose("Not negotiating unix fd passing, since not possible\n");
>+
>+  if (auth->maybe_possible)
>+    return send_negotiate_maybe (auth);
>+
>   return send_begin (auth);
> }
> 
>@@ -1674,6 +1691,33 @@ send_agree_unix_fd (DBusAuth *auth)
> }
> 
> static dbus_bool_t
>+send_negotiate_maybe (DBusAuth *auth)
>+{
>+  if (!_dbus_string_append (&auth->outgoing,
>+                            "NEGOTIATE_MAYBE\r\n"))
>+    return FALSE;
>+
>+  goto_state (auth, &client_state_waiting_for_agree_maybe);
>+  return TRUE;
>+}
>+
>+static dbus_bool_t
>+send_agree_maybe (DBusAuth *auth)
>+{
>+  _dbus_assert(auth->maybe_possible);
>+
>+  auth->maybe_negotiated = TRUE;
>+  _dbus_verbose("Agreed to MAYBE passing\n");
>+
>+  if (!_dbus_string_append (&auth->outgoing,
>+                            "AGREE_MAYBE\r\n"))
>+    return FALSE;
>+
>+  goto_state (auth, &server_state_waiting_for_begin);
>+  return TRUE;
>+}
>+
>+static dbus_bool_t
> handle_auth (DBusAuth *auth, const DBusString *args)
> {
>   if (_dbus_string_get_length (args) == 0)
>@@ -1765,12 +1809,14 @@ handle_server_state_waiting_for_auth  (DBusAuth         *auth,
>       return send_rejected (auth);
> 
>     case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>       return send_error (auth, "Need to authenticate first");
> 
>     case DBUS_AUTH_COMMAND_REJECTED:
>     case DBUS_AUTH_COMMAND_OK:
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>     default:
>       return send_error (auth, "Unknown command");
>     }
>@@ -1798,12 +1844,14 @@ handle_server_state_waiting_for_data  (DBusAuth         *auth,
>       return TRUE;
> 
>     case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>       return send_error (auth, "Need to authenticate first");
> 
>     case DBUS_AUTH_COMMAND_REJECTED:
>     case DBUS_AUTH_COMMAND_OK:
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>     default:
>       return send_error (auth, "Unknown command");
>     }
>@@ -1832,10 +1880,17 @@ handle_server_state_waiting_for_begin (DBusAuth         *auth,
>       else
>         return send_error(auth, "Unix FD passing not supported, not authenticated or otherwise not possible");
> 
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>+      if (auth->maybe_possible)
>+        return send_agree_maybe(auth);
>+      else
>+        return send_error(auth, "Maybe passing not supported, not authenticated or otherwise not possible");
>+
>     case DBUS_AUTH_COMMAND_REJECTED:
>     case DBUS_AUTH_COMMAND_OK:
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>     default:
>       return send_error (auth, "Unknown command");
> 
>@@ -2011,6 +2066,8 @@ handle_client_state_waiting_for_data (DBusAuth         *auth,
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>     case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>     default:
>       return send_error (auth, "Unknown command");
>     }
>@@ -2039,6 +2096,8 @@ handle_client_state_waiting_for_ok (DBusAuth         *auth,
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>     case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>     default:
>       return send_error (auth, "Unknown command");
>     }
>@@ -2063,6 +2122,8 @@ handle_client_state_waiting_for_reject (DBusAuth         *auth,
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>     case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>     default:
>       goto_state (auth, &common_state_need_disconnect);
>       return TRUE;
>@@ -2080,12 +2141,46 @@ handle_client_state_waiting_for_agree_unix_fd(DBusAuth         *auth,
>       _dbus_assert(auth->unix_fd_possible);
>       auth->unix_fd_negotiated = TRUE;
>       _dbus_verbose("Sucessfully negotiated UNIX FD passing\n");
>-      return send_begin (auth);
>+      return send_negotiate_maybe (auth);
> 
>     case DBUS_AUTH_COMMAND_ERROR:
>       _dbus_assert(auth->unix_fd_possible);
>       auth->unix_fd_negotiated = FALSE;
>       _dbus_verbose("Failed to negotiate UNIX FD passing\n");
>+      return send_negotiate_maybe (auth);
>+
>+    case DBUS_AUTH_COMMAND_OK:
>+    case DBUS_AUTH_COMMAND_DATA:
>+    case DBUS_AUTH_COMMAND_REJECTED:
>+    case DBUS_AUTH_COMMAND_AUTH:
>+    case DBUS_AUTH_COMMAND_CANCEL:
>+    case DBUS_AUTH_COMMAND_BEGIN:
>+    case DBUS_AUTH_COMMAND_UNKNOWN:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>+    default:
>+      return send_error (auth, "Unknown command");
>+    }
>+}
>+
>+static dbus_bool_t
>+handle_client_state_waiting_for_agree_maybe  (DBusAuth         *auth,
>+                                              DBusAuthCommand   command,
>+                                              const DBusString *args)
>+{
>+  switch (command)
>+    {
>+    case DBUS_AUTH_COMMAND_AGREE_MAYBE:
>+      _dbus_assert(auth->maybe_possible);
>+      auth->maybe_negotiated = TRUE;
>+      _dbus_verbose("Sucessfully negotiated MAYBE passing\n");
>+      return send_begin (auth);
>+
>+    case DBUS_AUTH_COMMAND_ERROR:
>+      _dbus_assert(auth->maybe_possible);
>+      auth->maybe_negotiated = FALSE;
>+      _dbus_verbose("Failed to negotiate MAYBE passing\n");
>       return send_begin (auth);
> 
>     case DBUS_AUTH_COMMAND_OK:
>@@ -2096,6 +2191,8 @@ handle_client_state_waiting_for_agree_unix_fd(DBusAuth         *auth,
>     case DBUS_AUTH_COMMAND_BEGIN:
>     case DBUS_AUTH_COMMAND_UNKNOWN:
>     case DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_AGREE_UNIX_FD:
>+    case DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE:
>     default:
>       return send_error (auth, "Unknown command");
>     }
>@@ -2118,7 +2215,9 @@ static const DBusAuthCommandName auth_command_names[] = {
>   { "OK",                DBUS_AUTH_COMMAND_OK },
>   { "ERROR",             DBUS_AUTH_COMMAND_ERROR },
>   { "NEGOTIATE_UNIX_FD", DBUS_AUTH_COMMAND_NEGOTIATE_UNIX_FD },
>-  { "AGREE_UNIX_FD",     DBUS_AUTH_COMMAND_AGREE_UNIX_FD }
>+  { "AGREE_UNIX_FD",     DBUS_AUTH_COMMAND_AGREE_UNIX_FD },
>+  { "NEGOTIATE_MAYBE", DBUS_AUTH_COMMAND_NEGOTIATE_MAYBE },
>+  { "AGREE_MAYBE",     DBUS_AUTH_COMMAND_AGREE_MAYBE }
> };
> 
> static DBusAuthCommand
>@@ -2817,6 +2916,31 @@ _dbus_auth_get_unix_fd_negotiated(DBusAuth *auth)
>   return auth->unix_fd_negotiated;
> }
> 
>+/**
>+ * Sets whether maybe passing was enabled by the client and
>+ * hence shall be negotiated.
>+ *
>+ * @param auth the auth conversation
>+ * @param b TRUE if maybe passing shall be negotiated, otherwise FALSE
>+ */
>+void
>+_dbus_auth_set_maybe_possible(DBusAuth *auth, dbus_bool_t b)
>+{
>+  auth->maybe_possible = b;
>+}
>+
>+/**
>+ * Queries whether maybe passing was sucessfully negotiated.
>+ *
>+ * @param auth the auth conversion
>+ * @returns #TRUE if maybe passing was negotiated.
>+ */
>+dbus_bool_t
>+_dbus_auth_get_maybe_negotiated(DBusAuth *auth)
>+{
>+  return auth->maybe_negotiated;
>+}
>+
> /** @} */
> 
> /* tests in dbus-auth-util.c */
>diff --git a/dbus/dbus-auth.h b/dbus/dbus-auth.h
>index ae3f364..13d6fba 100644
>--- a/dbus/dbus-auth.h
>+++ b/dbus/dbus-auth.h
>@@ -77,6 +77,9 @@ const char*   _dbus_auth_get_guid_from_server(DBusAuth               *auth);
> 
> void          _dbus_auth_set_unix_fd_possible(DBusAuth               *auth, dbus_bool_t b);
> dbus_bool_t   _dbus_auth_get_unix_fd_negotiated(DBusAuth             *auth);
>+void          _dbus_auth_set_maybe_possible  (DBusAuth               *auth, dbus_bool_t b);
>+dbus_bool_t   _dbus_auth_get_maybe_negotiated(DBusAuth               *auth);
>+
> 
> DBUS_END_DECLS
> 
>diff --git a/dbus/dbus-connection.c b/dbus/dbus-connection.c
>index 6992f00..35f3eb6 100644
>--- a/dbus/dbus-connection.c
>+++ b/dbus/dbus-connection.c
>@@ -3015,6 +3015,17 @@ dbus_connection_can_send_type(DBusConnection *connection,
>   if (!_dbus_type_is_valid(type))
>     return FALSE;
> 
>+  if (type == DBUS_TYPE_MAYBE)
>+    {
>+      dbus_bool_t b;
>+
>+      CONNECTION_LOCK (connection);
>+      b = _dbus_transport_can_pass_maybe (connection->transport);
>+      CONNECTION_UNLOCK (connection);
>+
>+    return b;
>+    }
>+
>   if (type != DBUS_TYPE_UNIX_FD)
>     return TRUE;
> 
>diff --git a/dbus/dbus-transport-protected.h b/dbus/dbus-transport-protected.h
>index 44b9d78..3462ed4 100644
>--- a/dbus/dbus-transport-protected.h
>+++ b/dbus/dbus-transport-protected.h
>@@ -140,6 +140,8 @@ DBusTransportOpenResult _dbus_transport_open_platform_specific (DBusAddressEntry
> 
> #define DBUS_TRANSPORT_CAN_SEND_UNIX_FD(x)      \
>   _dbus_auth_get_unix_fd_negotiated((x)->auth)
>+#define DBUS_TRANSPORT_CAN_SEND_MAYBE(x)      \
>+  _dbus_auth_get_maybe_negotiated((x)->auth)
> 
> DBUS_END_DECLS
> 
>diff --git a/dbus/dbus-transport-socket.c b/dbus/dbus-transport-socket.c
>index 1d4c2bf..28fd49b 100644
>--- a/dbus/dbus-transport-socket.c
>+++ b/dbus/dbus-transport-socket.c
>@@ -1268,6 +1268,8 @@ _dbus_transport_new_for_socket (int               fd,
>   _dbus_auth_set_unix_fd_possible(socket_transport->base.auth, _dbus_socket_can_pass_unix_fd(fd));
> #endif
> 
>+  _dbus_auth_set_maybe_possible (socket_transport->base.auth, TRUE);
>+
>   socket_transport->fd = fd;
>   socket_transport->message_bytes_written = 0;
>   
>diff --git a/dbus/dbus-transport.c b/dbus/dbus-transport.c
>index f33dc60..bcdd0fe 100644
>--- a/dbus/dbus-transport.c
>+++ b/dbus/dbus-transport.c
>@@ -827,6 +827,18 @@ _dbus_transport_can_pass_unix_fd(DBusTransport *transport)
> }
> 
> /**
>+ * Returns TRUE if the transport supports sending maybes.
>+ *
>+ * @param transport the transport
>+ * @returns #TRUE if TRUE it is possible to send maybes across the transport.
>+ */
>+dbus_bool_t
>+_dbus_transport_can_pass_maybe (DBusTransport *transport)
>+{
>+  return DBUS_TRANSPORT_CAN_SEND_MAYBE (transport);
>+}
>+
>+/**
>  * Gets the address of a transport. It will be
>  * #NULL for a server-side transport.
>  *
>diff --git a/dbus/dbus-transport.h b/dbus/dbus-transport.h
>index 0db048a..a0d3972 100644
>--- a/dbus/dbus-transport.h
>+++ b/dbus/dbus-transport.h
>@@ -41,6 +41,7 @@ dbus_bool_t        _dbus_transport_get_is_connected       (DBusTransport
> dbus_bool_t        _dbus_transport_get_is_authenticated   (DBusTransport              *transport);
> dbus_bool_t        _dbus_transport_get_is_anonymous       (DBusTransport              *transport);
> dbus_bool_t        _dbus_transport_can_pass_unix_fd       (DBusTransport              *transport);
>+dbus_bool_t        _dbus_transport_can_pass_maybe         (DBusTransport              *transport);
> 
> const char*        _dbus_transport_get_address            (DBusTransport              *transport);
> const char*        _dbus_transport_get_server_id          (DBusTransport              *transport);
>-- 
>1.7.1
>

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