From a5b421e67c45708391cb1c44725c359ae4a7f75c Mon Sep 17 00:00:00 2001
From: pgpickering <pgpickering@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 21 Aug 2008 09:24:35 +0000
Subject: [PATCH] added get_dns_servers() to nmap_dns.cc/.h

---
 nmap_dns.cc | 18 ++++++++++++++++++
 nmap_dns.h  |  1 +
 2 files changed, 19 insertions(+)

diff --git a/nmap_dns.cc b/nmap_dns.cc
index c457be27a..22dd36cad 100644
--- a/nmap_dns.cc
+++ b/nmap_dns.cc
@@ -1326,3 +1326,21 @@ void nmap_mass_rdns(Target **targets, int num_targets) {
 
   firstrun=0;
 }
+
+
+// Returns a list of known DNS servers
+std::list<std::string> get_dns_servers() {
+  // if, for example, run with -n, list is not initialized,
+  // run empty nmap_mass_rdns to do so
+  if(servs.size() == 0 && firstrun) {
+    nmap_mass_rdns(NULL, 0);
+  }
+  std::list<dns_server *>::iterator servI;
+  std::list<std::string> serverList;
+  dns_server *tpserv;
+  for(servI = servs.begin(); servI != servs.end(); servI++) {
+    tpserv = *servI;
+    serverList.push_back(inet_ntoa(tpserv->addr.sin_addr));
+  }
+  return serverList;
+}
diff --git a/nmap_dns.h b/nmap_dns.h
index bb1b072fc..942b6253d 100644
--- a/nmap_dns.h
+++ b/nmap_dns.h
@@ -103,3 +103,4 @@ const char *lookup_cached_host(u32 ip);
 void free_dns_servers();
 void free_etchosts();
 
+std::list<std::string> get_dns_servers();