[sr-dev] git:4.2:e7101281: textops: safety check to know there is a string to add via lump

[Daniel-Constantin Mierla]

Module: kamailio
Branch: 4.2
Commit: e71012814800462519b9040e82c892dfa39bf817
URL: https://github.com/kamailio/kamailio/commit/e71012814800462519b9040e82c892dfa39bf817

Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date: 2015-05-19T09:34:36+02:00

textops: safety check to know there is a string to add via lump

(cherry picked from commit ca220afe0f738f2353d16c96dd16ab279ffdcf74)

---

Modified: modules/textops/textops.c

---

Diff:  https://github.com/kamailio/kamailio/commit/e71012814800462519b9040e82c892dfa39bf817.diff
Patch: https://github.com/kamailio/kamailio/commit/e71012814800462519b9040e82c892dfa39bf817.patch

---

diff --git a/modules/textops/textops.c b/modules/textops/textops.c
index a945937..fa8874f 100644
--- a/modules/textops/textops.c
+++ b/modules/textops/textops.c
@@ -2126,6 +2126,11 @@ int add_hf_helper(struct sip_msg* msg, str *str1, str *str2,
 	len=s0.len;
 	if (str2) len+= str2->len + REQ_LINE(msg).uri.len;
 
+	if(len==0) {
+		LM_INFO("nothing to add\n");
+		return -1;
+	}
+
 	s  = (char*)pkg_malloc(len);
 	if (!s) {
 		LM_ERR("no pkg memory left\n");