1 files changed, 48 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/connecttcp.c b/contrib/ipfilter/lib/connecttcp.c
new file mode 100644
index 0000000..2bab2af
--- /dev/null
+++ b/contrib/ipfilter/lib/connecttcp.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2012 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * $Id: connecttcp.c,v 1.3.2.2 2012/07/22 08:04:24 darren_r Exp $
+ */
+
+#include "ipf.h"
+#include <ctype.h>
+
+/*
+ * Format expected is one addres per line, at the start of each line.
+ */
+int
+connecttcp(char *server, int port)
+{
+	struct sockaddr_in sin;
+	struct hostent *host;
+	int fd;
+
+	memset(&sin, 0, sizeof(sin));
+	sin.sin_family = AF_INET;
+	sin.sin_port = htons(port & 65535);
+
+	if (ISDIGIT(*server)) {
+		if (inet_aton(server, &sin.sin_addr) == -1) {
+			return -1;
+		}
+	} else {
+		host = gethostbyname(server);
+		if (host == NULL)
+			return -1;
+		memcpy(&sin.sin_addr, host->h_addr_list[0],
+		       sizeof(sin.sin_addr));
+	}
+
+	fd = socket(AF_INET, SOCK_STREAM, 0);
+	if (fd == -1)
+		return -1;
+
+	if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
+		close(fd);
+		return -1;
+	}
+
+	return fd;
+}