[PATCH] osmo-hlr[master]: Move GSUP msg init into separate function

[Max]

Review at  https://gerrit.osmocom.org/1814

Move GSUP msg init into separate function

* move common copy-pasted code to initialize GSUP message into static
  function
* use osmo_strlcpy() to copy imsi for added safety

Change-Id: Icd6e2479aa111ff820d53711222d46c6522033e6
---
M src/hlr.c
1 file changed, 12 insertions(+), 10 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-hlr refs/changes/14/1814/1

diff --git a/src/hlr.c b/src/hlr.c
index 2fa27c3..275b99f 100644
--- a/src/hlr.c
+++ b/src/hlr.c
@@ -181,6 +181,15 @@
 			    msg_out);
 }
 
+static inline void fill_gsup_msg(struct osmo_gsup_message *out,
+				 struct lu_operation *lu,
+				 enum osmo_gsup_message_type mt)
+{
+	memset(out, 0, sizeof(struct osmo_gsup_message));
+	osmo_strlcpy(out->imsi, lu->subscr.imsi, GSM23003_IMSI_MAX_DIGITS + 1);
+	out->message_type = mt;
+}
+
 /*! Transmit UPD_LOC_ERROR and destroy lu_operation */
 void lu_op_tx_error(struct lu_operation *luop, enum gsm48_gmm_cause cause)
 {
@@ -190,10 +199,7 @@
 	       luop->subscr.imsi, get_value_string(gsm48_gmm_cause_names,
 						   cause));
 
-	memset(&gsup, 0, sizeof(gsup));
-	gsup.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR;
-	strncpy((char*)&gsup.imsi, luop->subscr.imsi, sizeof(gsup.imsi));
-	gsup.imsi[sizeof(gsup.imsi)-1] = '\0';
+	fill_gsup_msg(&gsup, luop, OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR);
 	gsup.cause = cause;
 
 	_luop_tx_gsup(luop, &gsup);
@@ -227,9 +233,7 @@
 {
 	struct osmo_gsup_message gsup;
 
-	memset(&gsup, 0, sizeof(gsup));
-	gsup.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT;
-	strncpy(gsup.imsi, luop->subscr.imsi, sizeof(gsup.imsi)-1);
+	fill_gsup_msg(&gsup, luop, OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT);
 	//FIXME gsup.hlr_enc;
 
 	_luop_tx_gsup(luop, &gsup);
@@ -281,9 +285,7 @@
 	OSMO_ASSERT(luop->state == LU_S_LU_RECEIVED ||
 		    luop->state == LU_S_CANCEL_ACK_RECEIVED);
 
-	memset(&gsup, 0, sizeof(gsup));
-	gsup.message_type = OSMO_GSUP_MSGT_INSERT_DATA_REQUEST;
-	strncpy(gsup.imsi, luop->subscr.imsi, sizeof(gsup.imsi)-1);
+	fill_gsup_msg(&gsup, luop, OSMO_GSUP_MSGT_INSERT_DATA_REQUEST);
 
 	l = gsm48_encode_bcd_number(msisdn_enc, sizeof(msisdn_enc), 0,
 				    luop->subscr.msisdn);

-- 
To view, visit https://gerrit.osmocom.org/1814
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Icd6e2479aa111ff820d53711222d46c6522033e6
Gerrit-PatchSet: 1
Gerrit-Project: osmo-hlr
Gerrit-Branch: master
Gerrit-Owner: Max <msuraev at sysmocom.de>