Module: kamailio
Branch: master
Commit: ade1cad69b659e5b0923e548d3c04f550204e793
URL: 
https://github.com/kamailio/kamailio/commit/ade1cad69b659e5b0923e548d3c04f550204e793

Author: Daniel-Constantin Mierla <mico...@gmail.com>
Committer: Daniel-Constantin Mierla <mico...@gmail.com>
Date: 2018-07-11T15:25:56+02:00

nathelper: safety check for sipping_from when building SIP keepalive request

- reported by GH #1587

---

Modified: src/modules/nathelper/sip_pinger.h

---

Diff:  
https://github.com/kamailio/kamailio/commit/ade1cad69b659e5b0923e548d3c04f550204e793.diff
Patch: 
https://github.com/kamailio/kamailio/commit/ade1cad69b659e5b0923e548d3c04f550204e793.patch

---

diff --git a/src/modules/nathelper/sip_pinger.h 
b/src/modules/nathelper/sip_pinger.h
index 4277b407e2..23ea633d03 100644
--- a/src/modules/nathelper/sip_pinger.h
+++ b/src/modules/nathelper/sip_pinger.h
@@ -127,6 +127,10 @@ static inline char *build_sipping(str *curi, struct 
socket_info *s, str *path,
        str vaddr;
        str vport;
 
+       if(sipping_from.s==NULL || sipping_from.len<=0) {
+               LM_WARN("SIP ping enabled but no SIP ping From address\n");
+               return NULL;
+       }
        if(s->useinfo.name.len > 0)
                vaddr = s->useinfo.name;
        else
@@ -206,4 +210,4 @@ static inline char *build_sipping(str *curi, struct 
socket_info *s, str *path,
        return buf;
 }
 
-#endif
\ No newline at end of file
+#endif


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