summaryrefslogtreecommitdiffstats
path: root/usr.bin/talk/ctl.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/talk/ctl.c')
-rw-r--r--usr.bin/talk/ctl.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/usr.bin/talk/ctl.c b/usr.bin/talk/ctl.c
new file mode 100644
index 0000000..250cbc1
--- /dev/null
+++ b/usr.bin/talk/ctl.c
@@ -0,0 +1,113 @@
+/*
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)ctl.c 8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+/*
+ * This file handles haggling with the various talk daemons to
+ * get a socket to talk to. sockt is opened and connected in
+ * the progress
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <protocols/talkd.h>
+#include <netinet/in.h>
+#include "talk.h"
+#include "talk_ctl.h"
+
+struct sockaddr_in daemon_addr = { sizeof(daemon_addr), AF_INET };
+struct sockaddr_in ctl_addr = { sizeof(ctl_addr), AF_INET };
+struct sockaddr_in my_addr = { sizeof(my_addr), AF_INET };
+
+ /* inet addresses of the two machines */
+struct in_addr my_machine_addr;
+struct in_addr his_machine_addr;
+
+u_short daemon_port; /* port number of the talk daemon */
+
+int ctl_sockt;
+int sockt;
+int invitation_waiting = 0;
+
+CTL_MSG msg;
+
+open_sockt()
+{
+ int length;
+
+ my_addr.sin_addr = my_machine_addr;
+ my_addr.sin_port = 0;
+ sockt = socket(AF_INET, SOCK_STREAM, 0);
+ if (sockt <= 0)
+ p_error("Bad socket");
+ if (bind(sockt, (struct sockaddr *)&my_addr, sizeof(my_addr)) != 0)
+ p_error("Binding local socket");
+ length = sizeof(my_addr);
+ if (getsockname(sockt, (struct sockaddr *)&my_addr, &length) == -1)
+ p_error("Bad address for socket");
+}
+
+/* open the ctl socket */
+open_ctl()
+{
+ int length;
+
+ ctl_addr.sin_port = 0;
+ ctl_addr.sin_addr = my_machine_addr;
+ ctl_sockt = socket(AF_INET, SOCK_DGRAM, 0);
+ if (ctl_sockt <= 0)
+ p_error("Bad socket");
+ if (bind(ctl_sockt,
+ (struct sockaddr *)&ctl_addr, sizeof(ctl_addr)) != 0)
+ p_error("Couldn't bind to control socket");
+ length = sizeof(ctl_addr);
+ if (getsockname(ctl_sockt,
+ (struct sockaddr *)&ctl_addr, &length) == -1)
+ p_error("Bad address for ctl socket");
+}
+
+/* print_addr is a debug print routine */
+print_addr(addr)
+ struct sockaddr_in addr;
+{
+ int i;
+
+ printf("addr = %x, port = %o, family = %o zero = ",
+ addr.sin_addr, addr.sin_port, addr.sin_family);
+ for (i = 0; i<8;i++)
+ printf("%o ", (int)addr.sin_zero[i]);
+ putchar('\n');
+}
OpenPOWER on IntegriCloud