From f4b38eec4b0eccab59cdfb0610124bd20c0d7802 Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang-solutions.com>
Date: Fri, 1 Jul 2011 15:51:31 +0200
Subject: Add asn1 nif for ber decode and per encode

---
 lib/asn1/src/Makefile       |  3 +-
 lib/asn1/src/asn1.app.src   |  3 +-
 lib/asn1/src/asn1rt_nif.erl | 83 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 2 deletions(-)
 create mode 100644 lib/asn1/src/asn1rt_nif.erl

(limited to 'lib/asn1/src')

diff --git a/lib/asn1/src/Makefile b/lib/asn1/src/Makefile
index 2733cde3f8..f4dc7d178d 100644
--- a/lib/asn1/src/Makefile
+++ b/lib/asn1/src/Makefile
@@ -68,7 +68,8 @@ RT_MODULES= \
 	asn1rt_per_bin_rt2ct \
 	asn1rt_uper_bin \
 	asn1rt_check \
-	asn1rt_driver_handler
+	asn1rt_driver_handler \
+	asn1rt_nif
 #	asn1_sup \
 #	asn1_app \
 #	asn1_server
diff --git a/lib/asn1/src/asn1.app.src b/lib/asn1/src/asn1.app.src
index abacb0a1e9..f59760a4ea 100644
--- a/lib/asn1/src/asn1.app.src
+++ b/lib/asn1/src/asn1.app.src
@@ -9,7 +9,8 @@
 	asn1rt_ber_bin,
 	asn1rt_ber_bin_v2,
 	asn1rt_check,
-	asn1rt_driver_handler
+	asn1rt_driver_handler,
+        asn1rt_nif
              ]},
   {registered, [
 	asn1_ns,
diff --git a/lib/asn1/src/asn1rt_nif.erl b/lib/asn1/src/asn1rt_nif.erl
new file mode 100644
index 0000000000..8580c70e6b
--- /dev/null
+++ b/lib/asn1/src/asn1rt_nif.erl
@@ -0,0 +1,83 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2002-2011. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+-module(asn1rt_nif).
+
+%% Nif interface for asn1
+
+-export([encode_per_complete/1,
+	 decode_ber_tlv/1]).
+
+-on_load(load_nif/0).
+
+-define(ASN1_NIF_VSN,1).
+
+load_nif() ->
+    LibBaseName = "asn1_erl_nif",
+    PrivDir = code:priv_dir(asn1),
+    LibName = case erlang:system_info(build_type) of
+		  opt ->
+		      LibBaseName;
+		  Type ->
+		      LibTypeName = LibBaseName ++ "."  ++ atom_to_list(Type),
+		      case (filelib:wildcard(
+			      filename:join(
+				[PrivDir,
+				 "lib",
+				 LibTypeName ++ "*"])) /= []) orelse
+			  (filelib:wildcard(
+			     filename:join(
+			       [PrivDir,
+				"lib",
+				erlang:system_info(system_architecture),
+				LibTypeName ++ "*"])) /= []) of
+			  true -> LibTypeName;
+			  false -> LibBaseName
+		      end
+	      end,
+    Lib = filename:join([PrivDir, "lib", LibName]),
+    Status = case erlang:load_nif(Lib, ?ASN1_NIF_VSN) of
+		 ok -> ok;
+		 {error, {load_failed, _}}=Error1 ->
+		     ArchLibDir =
+			 filename:join([PrivDir, "lib",
+					erlang:system_info(system_architecture)]),
+		     Candidate =
+			 filelib:wildcard(filename:join([ArchLibDir,LibName ++ "*" ])),
+		     case Candidate of
+			 [] -> Error1;
+			 _ ->
+			     ArchLib = filename:join([ArchLibDir, LibName]),
+			     erlang:load_nif(ArchLib, ?ASN1_NIF_VSN)
+		     end;
+		 Error1 -> Error1
+	     end,
+    case Status of
+	ok -> ok;
+	{error, {E, Str}} ->
+	    error_logger:error_msg("Unable to load asn1 nif library. "
+				   "Failed with error:~n\"~p, ~s\"~n",[E,Str]),
+	    Status
+    end.
+
+encode_per_complete(_Binary) ->
+    erlang:nif_error({nif_not_loaded,module,?MODULE,line,?LINE}).
+
+decode_ber_tlv(_Binary) ->
+    erlang:nif_error({nif_not_loaded,module,?MODULE,line,?LINE}).
-- 
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