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authorPau Espin Pedrol <pespin@sysmocom.de>2020-01-16 19:12:26 +0100
committerPau Espin Pedrol <pespin@sysmocom.de>2020-01-17 14:41:53 +0100
commit5a7eb34f735e0ae93a74da3bc8361454457e49cd (patch)
tree5ea89b38f32f2a460f3d0ab82ce85bb20f6f05d8
parent060b39223e030d25d6bfbe2486469c69e4209b7c (diff)
sccp: Improve logging in sccp_to_xua_opt()
-rw-r--r--include/osmocom/sccp/sccp_types.h4
-rw-r--r--src/sccp2sua.c16
-rw-r--r--src/sccp_types.c25
3 files changed, 40 insertions, 5 deletions
diff --git a/include/osmocom/sccp/sccp_types.h b/include/osmocom/sccp/sccp_types.h
index 71cbb0f..f43f822 100644
--- a/include/osmocom/sccp/sccp_types.h
+++ b/include/osmocom/sccp/sccp_types.h
@@ -80,6 +80,10 @@ enum sccp_parameter_name_codes {
SCCP_PNC_LONG_DATA = 19,
};
+extern const struct value_string osmo_sccp_pnc_names[];
+static inline const char *osmo_sccp_pnc_name(enum sccp_message_types val)
+{ return get_value_string(osmo_sccp_pnc_names, val); }
+
/* Figure 3/Q.713 Called/calling party address */
enum {
SCCP_TITLE_IND_NONE = 0,
diff --git a/src/sccp2sua.c b/src/sccp2sua.c
index e68662f..b829cf6 100644
--- a/src/sccp2sua.c
+++ b/src/sccp2sua.c
@@ -711,10 +711,11 @@ static struct xua_msg *sccp_to_xua_opt(struct msgb *msg, uint8_t *ptr_opt, struc
oneopt = opt_start;
+ enum sccp_parameter_name_codes opt_type = 0; /* dummy value not used */
while (oneopt < msg->tail) {
- enum sccp_parameter_name_codes opt_type = oneopt[0];
uint8_t opt_len;
uint16_t opt_len16;
+ opt_type = oneopt[0];
switch (opt_type) {
case SCCP_PNC_END_OF_OPTIONAL:
@@ -722,25 +723,30 @@ static struct xua_msg *sccp_to_xua_opt(struct msgb *msg, uint8_t *ptr_opt, struc
case SCCP_PNC_LONG_DATA:
/* two byte length field */
if (oneopt + 2 > msg->tail)
- return NULL;
+ goto malformed;
opt_len16 = oneopt[1] << 8 | oneopt[2];
if (oneopt + 3 + opt_len16 > msg->tail)
- return NULL;
+ goto malformed;
xua_msg_add_sccp_opt(xua, opt_type, opt_len16, oneopt+3);
oneopt += 3 + opt_len16;
break;
default:
/* one byte length field */
if (oneopt + 1 > msg->tail)
- return NULL;
+ goto malformed;
opt_len = oneopt[1];
if (oneopt + 2 + opt_len > msg->tail)
- return NULL;
+ goto malformed;
xua_msg_add_sccp_opt(xua, opt_type, opt_len, oneopt+2);
oneopt += 2 + opt_len;
}
}
+ LOGP(DLSUA, LOGL_ERROR, "Parameter %s not found\n", osmo_sccp_pnc_name(SCCP_PNC_END_OF_OPTIONAL));
+ return NULL;
+
+malformed:
+ LOGP(DLSUA, LOGL_ERROR, "Malformed parameter %s (%d)\n", osmo_sccp_pnc_name(opt_type), opt_type);
return NULL;
}
diff --git a/src/sccp_types.c b/src/sccp_types.c
index c6e24cc..98b3fa4 100644
--- a/src/sccp_types.c
+++ b/src/sccp_types.c
@@ -24,3 +24,28 @@ const struct value_string osmo_sccp_msg_type_names[] = {
{ SCCP_MSG_TYPE_LUDTS, "Long unitdata service" },
{}
};
+
+/* Table 2/Q.713 - SCCP parameter name codes */
+const struct value_string osmo_sccp_pnc_names[] = {
+ { SCCP_PNC_END_OF_OPTIONAL, "End of optional parameters" },
+ { SCCP_PNC_DESTINATION_LOCAL_REFERENCE, "Destination local reference" },
+ { SCCP_PNC_SOURCE_LOCAL_REFERENCE, "Source local reference" },
+ { SCCP_PNC_CALLED_PARTY_ADDRESS, "Called party address" },
+ { SCCP_PNC_CALLING_PARTY_ADDRESS, "Calling party address" },
+ { SCCP_PNC_PROTOCOL_CLASS, "Protocol class" },
+ { SCCP_PNC_SEGMENTING, "Segmenting/reassembling" },
+ { SCCP_PNC_RECEIVE_SEQ_NUMBER, "Receive sequence number" },
+ { SCCP_PNC_SEQUENCING, "Sequencing/segmenting" },
+ { SCCP_PNC_CREDIT, "Credit" },
+ { SCCP_PNC_RELEASE_CAUSE, "Release cause" },
+ { SCCP_PNC_RETURN_CAUSE, "Return cause" },
+ { SCCP_PNC_RESET_CAUSE, "Reset cause" },
+ { SCCP_PNC_ERROR_CAUSE, "Error cause" },
+ { SCCP_PNC_REFUSAL_CAUSE, "Refusal cause" },
+ { SCCP_PNC_DATA, "Data" },
+ { SCCP_PNC_SEGMENTATION, "Segmentation" },
+ { SCCP_PNC_HOP_COUNTER, "Hop counter" },
+ { SCCP_PNC_IMPORTANCE, "Importance" },
+ { SCCP_PNC_LONG_DATA, "Long data" },
+ {}
+};