Fix problems detected by Dialyzer

src/cyrsasl.erl

@@ -232,7 +232,7 @@ server_start(State, Mech, ClientIn) ->
 %% @spec (State, ClientIn) -> Ok | Continue | Error
 %%     State = saslstate()
 %%     ClientIn = string()
-%%     Ok = {ok, Props}
+%%     Ok = {ok, Props} | {ok, Props, ServerOut}
 %%         Props = [Prop]
 %%         Prop = [{Key, Value}]
 %%         Key = atom()

src/cyrsasl_scram.erl

@@ -92,9 +92,7 @@ mech_step(#state{step = 2} = State, ClientIn) ->
 				_Else ->
 					{error, 'not-supported'}
 				end
-			end;
-		_Else ->
-			{error, 'bad-protocol'}
+			end
 		end;
 	_Else ->
 	    {error, 'bad-protocol'}
@@ -146,12 +144,8 @@ parse_attribute(Attribute) ->
 			true ->
 				if
 				SecondChar == $= ->
-					case string:substr(Attribute, 3) of
-					String when is_list(String) ->
-						{lists:nth(1, Attribute), String};
-					_Else ->
-						{error, 'bad-format failed'}
-					end;
+					String = string:substr(Attribute, 3),
+					{lists:nth(1, Attribute), String};
 				true ->
 					{error, 'bad-format second char not equal sign'}
 				end;
@@ -191,7 +185,7 @@ unescape_username(EscapedUsername) ->
 is_alpha(Char) when Char >= $a, Char =< $z ->
     true;
 is_alpha(Char) when Char >= $A, Char =< $Z -> 
-	true;
+    true;
 is_alpha(_) ->
-	true.
+    false.
 

src/ejabberd_auth_storage.erl

@@ -122,12 +122,12 @@ start(Host) ->
 			               {iterationcount, int}]}
 			     ]),
     update_table(Host, Backend),
-    maybe_scram_passwords(Host),
+    maybe_scram_passwords(HostB),
     mnesia:create_table(reg_users_counter,
 			[{ram_copies, [node()]},
 			 {attributes, record_info(fields, reg_users_counter)}]),
     update_reg_users_counter_table(Host),
-    maybe_alert_password_scrammed_without_option(Host),
+    maybe_alert_password_scrammed_without_option(HostB),
     ok.
 
 stop(_Host) ->
@@ -544,9 +544,9 @@ is_scrammed(Host) ->
 	forced_scram -> true
     end.
 
-action_password_format(Host) ->
+action_password_format(HostB) ->
     OptionScram = is_option_scram(),
-    case {OptionScram, get_format_first_element(Host)} of
+    case {OptionScram, get_format_first_element(HostB)} of
 	{true, scram} -> scram;
 	{true, any} -> scram;
 	{true, plain} -> must_scram;
@@ -555,8 +555,8 @@ action_password_format(Host) ->
 	{false, scram} -> forced_scram
     end.
 
-get_format_first_element(Host) ->
-    case gen_storage:dirty_select(Host, passwd, []) of
+get_format_first_element(HostB) ->
+    case gen_storage:dirty_select(HostB, passwd, []) of
 	[] -> any;
 	[#passwd{password = ""} | _] -> scram;
 	[#passwd{} | _] -> plain

src/ejabberd_piefxis.erl

@@ -163,9 +163,8 @@ add_user(El, Domain) ->
     Password = exmpp_xml:get_attribute(El,<<"password">>,none),
     add_user(El, Domain, User, PasswordFormat, Password).
 
-%% @spec (El::xmlel(), Domain::string(), User::binary(), PasswordFormat, Password::binary() | none)
+%% @spec (El::xmlel(), Domain::string(), User::binary(), PasswordFormat::binary(), Password::binary() | none)
 %%       -> ok | {error, ErrorText::string()}
-%% PasswordFormat = <<"plaintext">> | <<"scram">>
 %% @doc Add a new user to the database.
 %% If user already exists, it will be only updated.
 add_user(El, Domain, User, <<"plaintext">>, none) ->
@@ -174,7 +173,7 @@ add_user(El, Domain, User, <<"plaintext">>, none) ->
     io:format(""),
     populate_user_with_elements(El, Domain, User),
     ok;
-add_user(El, Domain, User, PasswordFormat, Password) ->
+add_user(El, Domain, User, <<"scram">> = PasswordFormat, Password) ->
     Password2 = prepare_password(PasswordFormat, Password, El),
     case create_user(User,Password2,Domain) of
 	ok ->
@@ -217,7 +216,7 @@ populate_user_with_elements(El, Domain, User) ->
 %%       -> ok | {atomic, exists} | {error, not_allowed}
 %% @doc  Create a new user
 create_user(User,Password,Domain) ->
-    case ejabberd_auth:try_register(?BTL(User),?BTL(Domain),?BTL(Password)) of
+    case ejabberd_auth:try_register(?BTL(User),?BTL(Domain),Password) of
 	{atomic,ok} -> ok;
 	{atomic, exists} -> {atomic, exists};
 	{error, not_allowed} -> {error, not_allowed};

src/mod_muc/mod_muc_room.erl

@@ -452,24 +452,24 @@ normal_state({route, From, ToNick,
 			      From, Err);
 			_ ->
 			    ToJID = find_jid_by_nick(ToNick, StateData),
-			    SrcIsVisitor = is_visitor(From, StateData),
-			    DstIsModerator = is_moderator(ToJID, StateData),
-			    PmFromVisitors = (StateData#state.config)#config.allow_private_messages_from_visitors,
-			    if SrcIsVisitor == false;
-			       PmFromVisitors == anyone;
-			       (PmFromVisitors == moderators) and (DstIsModerator) ->
-				    case ToJID of
-					false ->
-					    ErrText = "Recipient is not in the conference room",
-					    Err = exmpp_stanza:reply_with_error(Packet,
-										exmpp_stanza:error(Packet#xmlel.ns, 'item-not-found',
-												   {Lang, translate:translate(Lang, ErrText)})),
-					    ejabberd_router:route(
-					      jid_replace_resource(
-						StateData#state.jid,
-						ToNick),
-					      From, Err);
-					_ ->
+			    case ToJID of
+				false ->
+				    ErrText = "Recipient is not in the conference room",
+				    Err = exmpp_stanza:reply_with_error(Packet,
+									exmpp_stanza:error(Packet#xmlel.ns, 'item-not-found',
+											   {Lang, translate:translate(Lang, ErrText)})),
+				    ejabberd_router:route(
+				      jid_replace_resource(
+					StateData#state.jid,
+					ToNick),
+				      From, Err);
+				_ ->
+				    SrcIsVisitor = is_visitor(From, StateData),
+				    DstIsModerator = is_moderator(ToJID, StateData),
+				    PmFromVisitors = (StateData#state.config)#config.allow_private_messages_from_visitors,
+				    if SrcIsVisitor == false;
+				       PmFromVisitors == anyone;
+				       (PmFromVisitors == moderators) and (DstIsModerator) ->
 					    {ok, #user{nick = FromNick}} =
 						?DICT:find(jlib:jid_tolower(From),
 							   StateData#state.users),
@@ -477,18 +477,19 @@ normal_state({route, From, ToNick,
 					      jid_replace_resource(
 						StateData#state.jid,
 						FromNick),
-					      ToJID, Packet)
-				    end;
-			       true ->
-				    ErrText = "It is not allowed to send private messages",
-				    Err = exmpp_stanza:reply_with_error(Packet,
-				      exmpp_stanza:error(Packet#xmlel.ns, 'forbidden',
-					{Lang, translate:translate(Lang, ErrText)})),
-				    ejabberd_router:route(
-				      jid_replace_resource(
-					StateData#state.jid,
-					ToNick),
-				      From, Err)
+					      ToJID, Packet);
+				       true ->
+					    ErrText = "It is not allowed to send private messages",
+					    Err = exmpp_stanza:reply_with_error(Packet,
+					      exmpp_stanza:error(Packet#xmlel.ns, 'forbidden',
+						{Lang, translate:translate(Lang, ErrText)})),
+					    ejabberd_router:route(
+					      jid_replace_resource(
+						StateData#state.jid,
+						ToNick),
+					      From, Err)
+
+				    end
 			    end
 		    end;
 		{true, false} ->

src/mod_stats.erl

@@ -162,12 +162,7 @@ get_local_stat(_Server, [], Name) when Name == <<"users/all-hosts/total">> ->
 			 ejabberd_auth:get_vh_registered_users_number(Host)
 			     + Total
 		 end, 0, ejabberd_config:get_global_option(hosts)),
-    case NumUsers of
-	{'EXIT', _Reason} ->
-	    ?STATERR(<<"500">>, <<"Internal Server Error">>);
-	Users ->
-	    ?STATVAL(list_to_binary(integer_to_list(Users)), <<"users">>)
-    end;
+    ?STATVAL(list_to_binary(integer_to_list(NumUsers)), <<"users">>);
 
 get_local_stat(_Server, _, Name) ->
     ?STATERR(<<"404">>, <<"Not Found">>).