Added nonblocking dns

*** BUG BUG BUG - If dns is slow, things will go wrong!!!! do not use this on a live net without accepting the risk involved! ***
Will be fixed by next commit.


git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@938 e03df62e-2008-0410-955e-edbf42e46eb7

3 files changed, 71 insertions, 0 deletions

diff --git a/include/dns.h b/include/dns.h
new file mode 100644
index 000000000..9a93a9da7
--- /dev/null
+++ b/include/dns.h
@@ -0,0 +1,62 @@
+/*
+dns.h - dns library declarations based on firedns Copyright (C) 2002 Ian Gulliver
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of version 2 of the GNU General Public License as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef _DNS_H
+#define _DNS_H
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <string>
+
+struct dns_ip4list {
+	in_addr ip;
+	dns_ip4list *next;
+};
+
+class DNS
+{
+private:
+	char *result;
+	in_addr *binip;
+	int t,i;
+	void dns_init();
+	unsigned int fd;
+	void dns_init_2(const char* dnsserver);
+	in_addr *dns_aton4(const char * const ipstring);
+	char *dns_ntoa4(const in_addr * const ip);
+	int dns_getip4(const char * const name);
+	int dns_getip4list(const char * const name);
+	int dns_getname4(const in_addr * const ip);
+	char *dns_getresult(const int fd);
+	in_addr *dns_aton4_s(const char * const ipstring, in_addr * const ip);
+	char *dns_ntoa4_s(const in_addr * const ip, char * const result);
+	char *dns_getresult_s(const int fd, char * const result);
+	in_addr *dns_aton4_r(const char * const ipstring);
+	char *dns_ntoa4_r(const in_addr * const ip);
+	char *dns_getresult_r(const int fd);
+public:
+	DNS();
+	DNS(std::string dnsserver);
+	~DNS();
+	bool ReverseLookup(std::string ip);
+	bool ForwardLookup(std::string host);
+	bool HasResult();
+	std::string GetResult();
+};
+
+#endif
diff --git a/include/dnsqueue.h b/include/dnsqueue.h
new file mode 100644
index 000000000..683257242
--- /dev/null
+++ b/include/dnsqueue.h
@@ -0,0 +1,5 @@
+#include "inspircd.h"
+#include "users.h"
+
+bool lookup_dns(userrec* u);
+void dns_poll();
diff --git a/include/users.h b/include/users.h
index fbe71d00a..b5a737c88 100644
--- a/include/users.h
+++ b/include/users.h
@@ -155,6 +155,10 @@ class userrec : public connection
 	 */
 	char oper[NICKMAX];
 
+        /** True when DNS lookups are completed.
+         */
+        bool dns_done;
+
 	userrec();
 	
 	virtual ~userrec() {  }