TT#119500 core: usr avp, fix from upstream

Change-Id: I5fb366c03dc240cc91297f27ef29a7521b1f2c8f

debian/patches/series

@@ -32,7 +32,7 @@ sipwise/sca-debug.patch
 sipwise/sca-fix-notify-after-bye.patch
 sipwise/sca-add-pai_avp-parameter.patch
 ## backports from upstream (5.4)
-#
+upstream/core-usr-avp-fix-detection-of-invalid-name-and-ids.patch
 ## upstream master (5.5)
 upstream/permissions-basic-safety-for-concurent-rpc-reload.patch
 upstream/permissions-add-reload_delta-parameter.patch

debian/patches/upstream/core-usr-avp-fix-detection-of-invalid-name-and-ids.patch

@@ -0,0 +1,56 @@
+From 967dd294ba424bf66e27bebe4d6261e0c8a66471 Mon Sep 17 00:00:00 2001
+From: Daniel-Constantin Mierla <miconda@gmail.com>
+Date: Fri, 16 Apr 2021 09:44:24 +0200
+Subject: [PATCH] core: usr avp - fix detection of invalid name and ids
+
+- use the fields designated for str name or int id, code analyzers can
+follow properly the execution path
+- regression introduced in ca1821837dfe7dd6630f628d968ed4d1178c7040
+
+(cherry picked from commit e4506385ca5a56d4861f36e85c1049599cba398f)
+---
+ src/core/usr_avp.c | 17 +++++++++--------
+ 1 file changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/src/core/usr_avp.c b/src/core/usr_avp.c
+index e80e52d79d..8d8fa34603 100644
+--- a/src/core/usr_avp.c
++++ b/src/core/usr_avp.c
+@@ -148,16 +148,11 @@ avp_t *create_avp (avp_flags_t flags, avp_name_t name, avp_value_t val)
+ 	struct str_str_data *ssd;
+ 	int len;
+ 
+-	if (name.s.s == NULL || name.s.len == 0) {
+-		LM_ERR("0 ID or NULL NAME AVP!");
+-		goto error;
+-	}
+-
+ 	/* compute the required mem size */
+ 	len = sizeof(struct usr_avp);
+ 	if (flags&AVP_NAME_STR) {
+ 		if ( name.s.s==0 || name.s.len==0) {
+-			LM_ERR("EMPTY NAME AVP!");
++			LM_ERR("NULL or EMPTY NAME AVP!");
+ 			goto error;
+ 		}
+ 		if (flags&AVP_VAL_STR) {
+@@ -168,8 +163,14 @@ avp_t *create_avp (avp_flags_t flags, avp_name_t name, avp_value_t val)
+ 			len += sizeof(struct str_int_data)-sizeof(union usr_avp_data)
+ 				+ name.s.len + 1; /* Terminating zero for regex search */
+ 		}
+-	} else if (flags&AVP_VAL_STR) {
+-		len += sizeof(str)-sizeof(union usr_avp_data) + val.s.len + 1;
++	} else {
++		if(name.n==0) {
++			LM_ERR("0 ID AVP!");
++			goto error;
++		}
++		if (flags&AVP_VAL_STR) {
++			len += sizeof(str)-sizeof(union usr_avp_data) + val.s.len + 1;
++		}
+ 	}
+ 
+ 	avp = (struct usr_avp*)shm_malloc( len );
+-- 
+2.20.1
+