1 files changed, 96 insertions, 0 deletions
diff --git a/src/util/find_inet.c b/src/util/find_inet.c
new file mode 100644
index 0000000..236268d
--- /dev/null
+++ b/src/util/find_inet.c
@@ -0,0 +1,96 @@
+/*++
+/* NAME
+/*	find_inet 3
+/* SUMMARY
+/*	inet-domain name services
+/* SYNOPSIS
+/*	#include <find_inet.h>
+/*
+/*	unsigned find_inet_addr(host)
+/*	const char *host;
+/*
+/*	int	find_inet_port(port, proto)
+/*	const char *port;
+/*	const char *proto;
+/* DESCRIPTION
+/*	These functions translate network address information from
+/*	between printable form to the internal the form used by the
+/*	BSD TCP/IP network software.
+/*
+/*	find_inet_addr() translates a symbolic or numerical hostname.
+/*	This function is deprecated. Use hostname_to_hostaddr() instead.
+/*
+/*	find_inet_port() translates a symbolic or numerical port name.
+/* BUGS
+/*	find_inet_addr() ignores all but the first address listed for
+/*	a symbolic hostname.
+/* DIAGNOSTICS
+/*	Lookup and conversion errors are fatal.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System libraries. */
+
+#include <sys_defs.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Application-specific. */
+
+#include "msg.h"
+#include "stringops.h"
+#include "find_inet.h"
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+/* find_inet_addr - translate numerical or symbolic host name */
+
+unsigned find_inet_addr(const char *host)
+{
+    struct in_addr addr;
+    struct hostent *hp;
+
+    addr.s_addr = inet_addr(host);
+    if ((addr.s_addr == INADDR_NONE) || (addr.s_addr == 0)) {
+	if ((hp = gethostbyname(host)) == 0)
+	    msg_fatal("host not found: %s", host);
+	if (hp->h_addrtype != AF_INET)
+	    msg_fatal("unexpected address family: %d", hp->h_addrtype);
+	if (hp->h_length != sizeof(addr))
+	    msg_fatal("unexpected address length %d", hp->h_length);
+	memcpy((void *) &addr, hp->h_addr, hp->h_length);
+    }
+    return (addr.s_addr);
+}
+
+/* find_inet_port - translate numerical or symbolic service name */
+
+int     find_inet_port(const char *service, const char *protocol)
+{
+    struct servent *sp;
+    int     port;
+
+    if (alldig(service) && (port = atoi(service)) != 0) {
+	if (port < 0 || port > 65535)
+	    msg_fatal("bad port number: %s", service);
+	return (htons(port));
+    } else {
+	if ((sp = getservbyname(service, protocol)) == 0)
+	    msg_fatal("unknown service: %s/%s", service, protocol);
+	return (sp->s_port);
+    }
+}