Interactive client for DHCP servers.

1 files changed, 135 insertions, 0 deletions

diff --git a/dhcpctl/dhcpctl.c b/dhcpctl/dhcpctl.c
new file mode 100644
index 00000000..212dd721
--- /dev/null
+++ b/dhcpctl/dhcpctl.c
@@ -0,0 +1,135 @@
+/* main.c
+
+   DHCP Daemon controller*/
+
+/*
+ * Copyright (c) 1998 The Internet Software Consortium.
+ * 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 Internet Software Consortium 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 INTERNET SOFTWARE CONSORTIUM 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 INTERNET SOFTWARE CONSORTIUM 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.
+ *
+ * This software has been written for the Internet Software Consortium
+ * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
+ * Enterprises.  To learn more about the Internet Software Consortium,
+ * see ``http://www.vix.com/isc''.  To learn more about Vixie
+ * Enterprises, see ``http://www.vix.com''.
+ */
+
+#ifndef lint
+static char copyright[] =
+"$Id: dhcpctl.c,v 1.1 1998/04/09 05:20:14 mellon Exp $ Copyright (c) 1998 The Internet Software Consortium.  All rights reserved.\n";
+#endif /* not lint */
+
+#include "dhcpd.h"
+
+int log_priority;
+int log_perror = 1;
+
+int dhcp_max_agent_option_packet_length;
+
+int main (argc, argv, envp)
+	int argc;
+	char **argv;
+	char **envp;
+{
+	struct sockaddr_un name;
+	int dhcpctl_fd;
+	FILE *dhcpctl;
+	int status;
+	char *buf;
+	int len;
+	char ibuf [1024];
+	int arg;
+
+#ifdef SYSLOG_4_2
+	openlog ("statmsg", LOG_NDELAY);
+	log_priority = LOG_DAEMON;
+#else
+	openlog ("statmsg", LOG_NDELAY, LOG_DAEMON);
+#endif
+
+#if !(defined (DEBUG) || defined (SYSLOG_4_2) || defined (__CYGWIN32__))
+	setlogmask (LOG_UPTO (LOG_INFO));
+#endif	
+
+	dhcpctl_fd = socket (AF_UNIX, SOCK_STREAM, 0);
+	if (dhcpctl_fd < 0)
+		error ("unable to create dhcpctl socket: %m");
+
+	/* XXX for now... */
+	name.sun_family = PF_UNIX;
+	strcpy (name.sun_path, "/var/run/dhcpctl");
+#if defined (HAVE_SA_LEN)
+	name.sun_len = 
+#endif
+		len = ((sizeof name) - (sizeof name.sun_path) +
+		       strlen (name.sun_path));
+
+	if (connect (dhcpctl_fd, (struct sockaddr *)&name, len) < 0)
+		error ("can't connect to dhcpctl socket: %m");
+
+#if 0
+	if ((arg = fcntl (dhcpctl_fd, F_GETFL, 0)) < 0)
+		error ("Can't get flags on socket: %m");
+	arg |= O_ASYNC;
+	if (fcntl (dhcpctl_fd, F_SETFL, arg) < 0)
+		error ("Can't set flags on socket: %m");
+#endif
+
+	dhcpctl = fdopen (dhcpctl_fd, "r+");
+	if (!dhcpctl)
+		error ("Can't fdopen dhcpctl socket: %m");
+	setlinebuf (dhcpctl);
+
+	/* Read the response. */
+	while (fgets (ibuf, sizeof ibuf, stdin)) {
+		len = strlen (ibuf);
+		if (!len)
+			break;
+		fputs (ibuf, dhcpctl);
+		fflush (dhcpctl);
+		if (ibuf [len - 1] != '\n')
+			putc ('\n', dhcpctl);
+
+		while (fgets (ibuf, sizeof ibuf, dhcpctl)) {
+			if (ibuf [0] == '-') {
+				fputs (&ibuf [1], stdout);
+			} else {
+				fputs (ibuf, stdout);
+				break;
+			}
+			fflush (stdout);
+		}
+	}
+
+	exit (0);
+}
+
+void cleanup ()
+{
+}