initial population

1 files changed, 81 insertions, 0 deletions

diff --git a/usr.bin/talk/get_addrs.c b/usr.bin/talk/get_addrs.c
new file mode 100644
index 0000000..f381cc7
--- /dev/null
+++ b/usr.bin/talk/get_addrs.c
@@ -0,0 +1,81 @@
+/*	$NetBSD: get_addrs.c,v 1.12 2015/06/16 22:54:11 christos Exp $	*/
+
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)get_addrs.c	8.1 (Berkeley) 6/6/93";
+#endif
+__RCSID("$NetBSD: get_addrs.c,v 1.12 2015/06/16 22:54:11 christos Exp $");
+#endif /* not lint */
+
+#include "talk.h"
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <err.h>
+#include "talk_ctl.h"
+
+void
+get_addrs(const char *my_machine_name, const char *his_machine_name)
+{
+	struct hostent *hp;
+	struct servent *sp;
+
+	msg.pid = htonl(getpid());
+	/*
+	 * If the callee is on-machine, just use loopback
+	 * otherwise do a lookup...
+	 */
+	if (strcmp(his_machine_name, my_machine_name) != 0) {
+		/* look up the address of the local host */
+		hp = gethostbyname(my_machine_name);
+		if (hp == NULL)
+			errx(EXIT_FAILURE, "%s: %s", my_machine_name,
+			    hstrerror(h_errno));
+		memcpy(&my_machine_addr, hp->h_addr, sizeof(my_machine_addr));
+		hp = gethostbyname(his_machine_name);
+		if (hp == NULL)
+			errx(EXIT_FAILURE, "%s: %s", his_machine_name,
+			    hstrerror(h_errno));
+		memcpy(&his_machine_addr, hp->h_addr, sizeof(his_machine_addr));
+	} else
+		his_machine_addr.s_addr = my_machine_addr.s_addr =
+		    htonl(INADDR_LOOPBACK);
+
+	/* find the server's port */
+	sp = getservbyname("ntalk", "udp");
+	if (sp == 0)
+		errx(EXIT_FAILURE, "%s/%s: service is not registered.",
+		     "ntalk", "udp");
+	daemon_port = sp->s_port;
+}