lib/ims: check return of strtok(...)

src/lib/ims/ims_getters.c

@@ -1247,12 +1247,13 @@ int cscf_get_p_charging_vector(struct sip_msg *msg, str * icid, str * orig_ioi,
 	LM_DBG("p_charging_vector body is %.*s\n", header_body.len, header_body.s);
 
 	p = strtok(header_body.s, " ;:\r\t\n\"=");
-	loop: if (p > (header_body.s + header_body.len))
+loop:
+	if (p == NULL || p > (header_body.s + header_body.len))
 		return 1;
 
 	if (strncmp(p, "icid-value", 10) == 0) {
 		p = strtok(NULL, " ;:\r\t\n\"=");
-		if (p > (header_body.s + header_body.len)) {
+		if (p == NULL || p > (header_body.s + header_body.len)) {
 			LM_ERR("cscf_get_p_charging_vector: no value for icid\n");
 			return 0;
 		}
@@ -1272,7 +1273,7 @@ int cscf_get_p_charging_vector(struct sip_msg *msg, str * icid, str * orig_ioi,
 	} else if (strncmp(p, "orig-ioi", 8) == 0) {
 
 		p = strtok(NULL, " ;:\r\t\n\"=");
-		if (p > (header_body.s + header_body.len)) {
+		if (p == NULL || p > (header_body.s + header_body.len)) {
 			LM_ERR("cscf_get_p_charging_vector: no value for icid\n");
 			return 0;
 		}
@@ -1292,7 +1293,7 @@ int cscf_get_p_charging_vector(struct sip_msg *msg, str * icid, str * orig_ioi,
 	} else if (strncmp(p, "term-ioi", 8) == 0) {
 
 		p = strtok(NULL, " ;:\r\t\n\"=");
-		if (p > (header_body.s + header_body.len)) {
+		if (p == NULL || p > (header_body.s + header_body.len)) {
 			LM_ERR("cscf_get_p_charging_vector: no value for icid\n");
 			return 0;
 		}
@@ -1314,7 +1315,7 @@ int cscf_get_p_charging_vector(struct sip_msg *msg, str * icid, str * orig_ioi,
 	LM_DBG("end\n");
 	str_free(header_body, pkg);
 	return 1;
-	out_of_memory:
+out_of_memory:
 	PKG_MEM_ERROR;
 	return 0;
 }