topology_hiding: do not mark the contacts parts as HDR_CONTACT_T

This ensures that when a fixed contact is restored from a shm lump, it
does not overlap to contact parts, as topology hiding builds them.

Many thanks to David Trihy from Genesys for reporting and helping us
troubleshoot.

Author: razvancrainea

modules/tm/t_msgbuilder.h

@@ -160,7 +160,7 @@ static inline int fix_fake_req_headers(struct sip_msg *req)
 		for (c = ((contact_body_t *)hdr->parsed)->contacts; c; c = c->next) {
 			/* search for the lump */
 			for (ld = req->add_rm; ld; ld = ld->next) {
-				if (ld->op != LUMP_DEL)
+				if (ld->op != LUMP_DEL && ld->op != LUMP_NOP)
 					continue;
 				for (la = ld->after; la; la = la->after) {
 					/* LM_DBG("matching contact lump op=%d type=%d offset=%d"

modules/topology_hiding/topo_hiding_logic.c

@@ -420,7 +420,7 @@ static int topo_dlg_replace_contact(struct sip_msg* msg, struct dlg_cell* dlg, i
 			goto error;
 		}
 
-		if ((lump = insert_new_lump_after(lump, prefix, ct->len, HDR_CONTACT_T)) == 0) {
+		if ((lump = insert_new_lump_after(lump, prefix, ct->len, 0)) == 0) {
 			LM_ERR("failed inserting '%.*s'\n", ct->len, prefix);
 			goto error;
 		}
@@ -597,19 +597,19 @@ static int topo_dlg_replace_contact(struct sip_msg* msg, struct dlg_cell* dlg, i
 		goto error;
 	}
 
-	if ((lump = insert_new_lump_after(lump,prefix,prefix_len,HDR_CONTACT_T)) == 0) {
+	if ((lump = insert_new_lump_after(lump,prefix,prefix_len,0)) == 0) {
 		LM_ERR("failed inserting '<sip:'\n");
 		goto error;
 	}
 	/* make sure we do not free this string in case of a further error */
 	prefix = NULL;
 
-	if ((lump = insert_subst_lump_after(lump, SUBST_SND_ALL, HDR_CONTACT_T)) == 0) {
+	if ((lump = insert_subst_lump_after(lump, SUBST_SND_ALL, 0)) == 0) {
 		LM_ERR("failed inserting SUBST_SND buf\n");
 		goto error;
 	}
 
-	if ((lump = insert_new_lump_after(lump,suffix,suffix_len,HDR_CONTACT_T)) == 0) {
+	if ((lump = insert_new_lump_after(lump,suffix,suffix_len,0)) == 0) {
 		LM_ERR("failed inserting '<sip:'\n");
 		goto error;
 	}
@@ -1775,7 +1775,7 @@ static int topo_no_dlg_encode_contact(struct sip_msg *msg,int flags, str *routes
 		prefix[prefix_len-1] = '@';
 	}
 
-	if (!(lump = insert_new_lump_after(lump,prefix,prefix_len,HDR_CONTACT_T))) {
+	if (!(lump = insert_new_lump_after(lump,prefix,prefix_len,0))) {
 		LM_ERR("failed inserting '<sip:'\n");
 		goto error;
 	}
@@ -1787,12 +1787,12 @@ static int topo_no_dlg_encode_contact(struct sip_msg *msg,int flags, str *routes
 		goto error;
 	}
 
-	if (!(lump = insert_subst_lump_after(lump, SUBST_SND_ALL, HDR_CONTACT_T))) {
+	if (!(lump = insert_subst_lump_after(lump, SUBST_SND_ALL, 0))) {
 		LM_ERR("failed inserting SUBST_SND buf\n");
 		goto error;
 	}
 
-	if (!(lump = insert_new_lump_after(lump,suffix,suffix_len,HDR_CONTACT_T))) {
+	if (!(lump = insert_new_lump_after(lump,suffix,suffix_len,0))) {
 		LM_ERR("failed inserting '<sip:'\n");
 		goto error;
 	}