[PATCH] openbsc[master]: libmsc: Fix wrong handling of user_message_reference parameter

[Pau Espin Pedrol]

Hello Jenkins Builder,

I'd like you to reexamine a change.  Please visit

    https://gerrit.osmocom.org/3554

to look at the new patch set (#2).

libmsc: Fix wrong handling of user_message_reference parameter

libsmpp34 already converts received TLV integer values to native
endianess in libsmpp34_(un)pack.

Converting them again at receive time swaps the 2 bytes of
user_message_reference, then using a wrong value. As GSM03.40 spec
uses only 1 byte for the id, then only the high byte of the initial
value is used and eventually sent back to the ESME. Again, at that time,
htons() is not needed because libsmpp34 already handles that part.

See OS-#2429 for more details.

Change-Id: If748548a4a223e529a1110c89e483b599b406e8b
---
M openbsc/src/libmsc/smpp_openbsc.c
1 file changed, 2 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/openbsc refs/changes/54/3554/2

diff --git a/openbsc/src/libmsc/smpp_openbsc.c b/openbsc/src/libmsc/smpp_openbsc.c
index e656376..af2d1be 100644
--- a/openbsc/src/libmsc/smpp_openbsc.c
+++ b/openbsc/src/libmsc/smpp_openbsc.c
@@ -120,7 +120,7 @@
 			}
 			break;
 		case TLVID_user_message_reference:
-			msg_ref = ntohs(t->value.val16);
+			msg_ref = t->value.val16;
 			break;
 		default:
 			break;
@@ -436,7 +436,7 @@
 	memset(&tlv, 0, sizeof(tlv));
 	tlv.tag = tag;
 	tlv.length = 2;
-	tlv.value.val16 = htons(val);
+	tlv.value.val16 = val;
 	build_tlv(req_tlv, &tlv);
 }
 

-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: If748548a4a223e529a1110c89e483b599b406e8b
Gerrit-PatchSet: 2
Gerrit-Project: openbsc
Gerrit-Branch: master
Gerrit-Owner: Pau Espin Pedrol <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Pablo Neira Ayuso <pablo at gnumonks.org>