Chapril/xmpp.chapril.org-ejabberd
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Support IPv6 connections for PostgreSQL, MySQL and LDAP

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Fixes #2411
This commit is contained in:
Evgeniy Khramtsov 2018-05-11 16:43:49 +03:00
parent 6ac8f6eaee
commit 27594db029
2 changed files with 71 additions and 12 deletions
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4
rebar.config
View File

@ -34,9 +34,9 @@
{if_var_true, stun, {stun, ".*", {git, "https://github.com/processone/stun", {tag, "1.0.22"}}}},
{if_var_true, sip, {esip, ".*", {git, "https://github.com/processone/esip", {tag, "1.0.23"}}}},
{if_var_true, mysql, {p1_mysql, ".*", {git, "https://github.com/processone/p1_mysql",
{tag, "1.0.5"}}}},
"36efcd96f61a"}}},
{if_var_true, pgsql, {p1_pgsql, ".*", {git, "https://github.com/processone/p1_pgsql",
{tag, "1.1.5"}}}},
"dd37ea053eb3"}}},
{if_var_true, sqlite, {sqlite3, ".*", {git, "https://github.com/processone/erlang-sqlite3",
{tag, "1.1.6"}}}},
{if_var_true, pam, {epam, ".*", {git, "https://github.com/processone/epam",

79
src/eldap.erl
View File

@ -88,7 +88,7 @@
-export_type([filter/0]).
-include("ELDAPv3.hrl").
-include_lib("kernel/include/inet.hrl").
-include("eldap.hrl").
-define(LDAP_VERSION, 3).
@ -1057,15 +1057,11 @@ connect_bind(S) ->
?DEBUG("Connecting to LDAP server at ~s:~p with options ~p",
[Host, S#eldap.port, Opts]),
HostS = binary_to_list(Host),
SocketData = case S#eldap.tls of
tls ->
SockMod = ssl, ssl:connect(HostS, S#eldap.port, Opts);
%% starttls -> %% TODO: Implement STARTTLS;
_ ->
SockMod = gen_tcp,
gen_tcp:connect(HostS, S#eldap.port, Opts)
end,
case SocketData of
SockMod = case S#eldap.tls of
tls -> ssl;
_ -> gen_tcp
end,
case connect(HostS, S#eldap.port, SockMod, Opts) of
{ok, Socket} ->
case bind_request(Socket, S#eldap{sockmod = SockMod}) of
{ok, NewS} ->
@ -1132,3 +1128,66 @@ format_error(SockMod, Reason) ->
_ ->
Txt
end.
%%--------------------------------------------------------------------
%% Connecting stuff
%%--------------------------------------------------------------------
-define(CONNECT_TIMEOUT, timer:seconds(15)).
-define(DNS_TIMEOUT, timer:seconds(5)).
connect(Host, Port, Mod, Opts) ->
case lookup(Host) of
{ok, AddrsFamilies} ->
do_connect(AddrsFamilies, Port, Mod, Opts, {error, nxdomain});
{error, _} = Err ->
Err
end.
do_connect([{IP, Family}|AddrsFamilies], Port, Mod, Opts, _Err) ->
case Mod:connect(IP, Port, [Family|Opts], ?CONNECT_TIMEOUT) of
{ok, Sock} ->
{ok, Sock};
{error, _} = Err ->
do_connect(AddrsFamilies, Port, Mod, Opts, Err)
end;
do_connect([], _Port, _Mod, _Opts, Err) ->
Err.
lookup(Host) ->
case inet:parse_address(Host) of
{ok, IP} ->
{ok, [{IP, get_addr_type(IP)}]};
{error, _} ->
do_lookup([{Host, Family} || Family <- [inet6, inet]],
[], {error, nxdomain})
end.
do_lookup([{Host, Family}|HostFamilies], AddrFamilies, Err) ->
case inet:gethostbyname(Host, Family, ?DNS_TIMEOUT) of
{ok, HostEntry} ->
Addrs = host_entry_to_addrs(HostEntry),
AddrFamilies1 = [{Addr, Family} || Addr <- Addrs],
do_lookup(HostFamilies,
AddrFamilies ++ AddrFamilies1,
Err);
{error, _} = Err1 ->
do_lookup(HostFamilies, AddrFamilies, Err1)
end;
do_lookup([], [], Err) ->
Err;
do_lookup([], AddrFamilies, _Err) ->
{ok, AddrFamilies}.
host_entry_to_addrs(#hostent{h_addr_list = AddrList}) ->
lists:filter(
fun(Addr) ->
try get_addr_type(Addr) of
_ -> true
catch _:badarg ->
false
end
end, AddrList).
get_addr_type({_, _, _, _}) -> inet;
get_addr_type({_, _, _, _, _, _, _, _}) -> inet6;
get_addr_type(_) -> erlang:error(badarg).