From 12ff0ec89ad42a37935b76f1eb3c6acb0d6b0cdb Mon Sep 17 00:00:00 2001
From: heck <heck@pep.foundation>
Date: Tue, 25 Jan 2022 17:07:55 +0100
Subject: [PATCH] JNI-167: add Message.encodeASN1XER()

---
 src/codegen/gen_cpp_Message.ysl2  | 56 +++++++++++++++++++++++++++++++
 src/codegen/gen_java_Message.ysl2 |  6 ++++
 2 files changed, 62 insertions(+)

diff --git a/src/codegen/gen_cpp_Message.ysl2 b/src/codegen/gen_cpp_Message.ysl2
index a951771..9939c13 100644
--- a/src/codegen/gen_cpp_Message.ysl2
+++ b/src/codegen/gen_cpp_Message.ysl2
@@ -17,6 +17,8 @@ tstylesheet {
             ||
             #include <cassert>
             #include <pEp/mime.h>
+            #include <pEp/map_asn1.h>
+            #include <pEp/message_codec.h>
             #include <pEp/pEpLog.hh>
             #include "jniutils.hh"
             #include "throw_pEp_exception.hh"
@@ -113,6 +115,60 @@ tstylesheet {
                 return result;
             }
 
+
+            JNIEXPORT jbyteArray JNICALL Java_foundation_pEp_jniadapter_Message__1encodeASN1XER(JNIEnv *env, jobject obj)
+            {
+                pEpLog("called");
+                message* _obj = nullptr;
+                try {
+                    _obj = message_ptr(env, obj);
+                } catch(...) {
+                    jclass ex = env->FindClass("java/lang/IllegalStateException");
+                    assert(ex);
+                    env->ThrowNew(ex, nullptr);
+                    return static_cast<jbyteArray>(NULL);
+                }
+
+                // create ASN1Message
+                ASN1Message_t *pm = ::ASN1Message_from_message(_obj, NULL, true, 0);
+                if (pm == nullptr) {
+                    jclass ex = env->FindClass("java/lang/IllegalStateException");
+                    assert(ex);
+                    env->ThrowNew(ex, nullptr);
+                    return static_cast<jbyteArray>(NULL);
+                }
+
+                // encode PER
+                char *data_per = nullptr;
+                size_t data_size_per = 0;
+                PEP_STATUS status = ::encode_ASN1Message_message(pm, &data_per, &data_size_per);
+                if (status) {
+                    throw_pEp_Exception(env, status);
+                }
+                if (data_per == nullptr) {
+                    jclass ex = env->FindClass("java/lang/IllegalStateException");
+                    assert(ex);
+                    env->ThrowNew(ex, nullptr);
+                    return static_cast<jbyteArray>(NULL);
+                }
+
+                // encode PER to XER
+                char *data_xer = nullptr;
+                status = ::PER_to_XER_ASN1Message_msg(data_per, data_size_per, &data_xer);
+                if (status) {
+                    throw_pEp_Exception(env, status);
+                }
+                if (data_xer == nullptr) {
+                    jclass ex = env->FindClass("java/lang/IllegalStateException");
+                    assert(ex);
+                    env->ThrowNew(ex, nullptr);
+                    return static_cast<jbyteArray>(NULL);
+                }
+
+                jbyteArray result = from_string(env, data_xer);
+                return result;
+            }
+
             ||
             apply "*[name(.)!='enum']", 0, mode=entry {
                 with "name", "@name";
diff --git a/src/codegen/gen_java_Message.ysl2 b/src/codegen/gen_java_Message.ysl2
index 8b13da8..a2b1e34 100644
--- a/src/codegen/gen_java_Message.ysl2
+++ b/src/codegen/gen_java_Message.ysl2
@@ -64,6 +64,12 @@ tstylesheet {
                     return Utils.toUTF16(_encodeMIME());
                 }
 
+                private native byte[] _encodeASN1XER() throws pEpException;
+
+                public String encodeASN1XER() {
+                    return Utils.toUTF16(_encodeASN1XER());
+                }
+
                 private «$cname»(long h) {
                     handle = h;
                     instanceCount.getAndIncrement();