Whistle's Netgraph link-layer (sometimes more) networking infrastructure.

Been in production for 3 years now. Gives Instant Frame relay to if_sr
and if_ar drivers, and PPPOE support soon. See:
ftp://ftp.whistle.com/pub/archie/netgraph/index.html
for on-line manual pages.

Reviewed by: Doug Rabson (dfr@freebsd.org)
Obtained from:  Whistle CVS tree

18 files changed, 1820 insertions, 0 deletions

diff --git a/usr.sbin/Makefile b/usr.sbin/Makefile
index b56da8f..356e36c 100644
--- a/usr.sbin/Makefile
+++ b/usr.sbin/Makefile
@@ -47,6 +47,8 @@ SUBDIR=	IPXrouted \
 	named.restart \
 	ndc \
 	newsyslog \
+	ngctl \
+	nghook \
 	nslookup \
 	nsupdate \
 	pccard \
diff --git a/usr.sbin/ngctl/Makefile b/usr.sbin/ngctl/Makefile
new file mode 100644
index 0000000..a4e02ad
--- /dev/null
+++ b/usr.sbin/ngctl/Makefile
@@ -0,0 +1,15 @@
+# $FreeBSD$
+# $Whistle: Makefile,v 1.3 1999/01/16 00:10:11 archie Exp $
+
+PROG=		ngctl
+SRCS=		main.c mkpeer.c connect.c name.c show.c list.c \
+		debug.c shutdown.c rmhook.c status.c types.c
+MAN8=		ngctl.8
+
+LDADD+=		-lnetgraph
+DPADD+=		/usr/lib/libnetgraph.a
+
+COPTS+=		-O2 -g -Wall -Werror
+COPTS+=		-I/usr/src.freefall/sys
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/ngctl/connect.c b/usr.sbin/ngctl/connect.c
new file mode 100644
index 0000000..8b15ca0
--- /dev/null
+++ b/usr.sbin/ngctl/connect.c
@@ -0,0 +1,85 @@
+
+/*
+ * connect.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int ConnectCmd(int ac, char **av);
+
+const struct ngcmd connect_cmd = {
+	ConnectCmd,
+	"connect [path] <relpath> <hook> <peerhook>",
+	"Connects hook <peerhook> of the node at <relpath> to <hook>",
+	"The connect command creates a link between the two nodes at"
+	" \"path\" and \"relpath\" using hooks \"hook\" and \"peerhook\","
+	" respectively. The \"relpath\", if not absolute, is specified"
+	" relative to the node at \"path\"."
+	" If \"path\" is omitted then \".\" is assumed."
+};
+
+static int
+ConnectCmd(int ac, char **av)
+{
+	struct ngm_connect con;
+	char *path = ".";
+
+	/* Get arguments */
+	switch (ac) {
+	case 5:
+		path = av[1];
+		ac--;
+		av++;
+		/* FALLTHROUGH */
+	case 4:
+		snprintf(con.path, sizeof(con.path), "%s", av[1]);
+		snprintf(con.ourhook, sizeof(con.ourhook), "%s", av[2]);
+		snprintf(con.peerhook, sizeof(con.peerhook), "%s", av[3]);
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Send message */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_CONNECT, &con, sizeof(con)) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	return(CMDRTN_OK);
+}
+
diff --git a/usr.sbin/ngctl/debug.c b/usr.sbin/ngctl/debug.c
new file mode 100644
index 0000000..7b355e5
--- /dev/null
+++ b/usr.sbin/ngctl/debug.c
@@ -0,0 +1,78 @@
+
+/*
+ * debug.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int DebugCmd(int ac, char **av);
+
+const struct ngcmd debug_cmd = {
+	DebugCmd,
+	"debug [level]",
+	"Get/set debugging verbosity level",
+	"Without any argument, this command displays the current"
+	" debugging verbosity level. If the argument is ``+'' or ``-''"
+	" the debug level is incremented or decremented; otherwise,"
+	" it must be an absolute numerical level."
+};
+
+static int
+DebugCmd(int ac, char **av)
+{
+	int level;
+
+	/* Get arguments */
+	switch (ac) {
+	case 2:
+		if (!strcmp(av[1], "+"))
+			level = NgSetDebug(-1) + 1;
+		else if (!strcmp(av[1], "-"))
+			level = NgSetDebug(-1) - 1;
+		else if ((level = atoi(av[1])) < 0)
+			return(CMDRTN_USAGE);
+		NgSetDebug(level);
+		break;
+	case 1:
+		printf("Current debug level is %d\n", NgSetDebug(-1));
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+	return(CMDRTN_OK);
+}
+
diff --git a/usr.sbin/ngctl/list.c b/usr.sbin/ngctl/list.c
new file mode 100644
index 0000000..d763061
--- /dev/null
+++ b/usr.sbin/ngctl/list.c
@@ -0,0 +1,113 @@
+
+/*
+ * list.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int ListCmd(int ac, char **av);
+
+const struct ngcmd list_cmd = {
+	ListCmd,
+	"list [-n]",
+	"Show information about all nodes",
+	"The list command shows information every node that currently"
+	" exists in the netgraph system. The optional -n argument limits"
+	" this list to only those nodes with a global name assignment."
+};
+
+static int
+ListCmd(int ac, char **av)
+{
+	u_char rbuf[16 * 1024];
+	struct ng_mesg *const resp = (struct ng_mesg *) rbuf;
+	struct namelist *const nlist = (struct namelist *) resp->data;
+	int named_only = 0;
+	int k, ch, rtn = CMDRTN_OK;
+
+	/* Get options */
+	optind = 1;
+	while ((ch = getopt(ac, av, "n")) != EOF) {
+		switch (ch) {
+		case 'n':
+			named_only = 1;
+			break;
+		case '?':
+		default:
+			return(CMDRTN_USAGE);
+			break;
+		}
+	}
+	ac -= optind;
+	av += optind;
+
+	/* Get arguments */
+	switch (ac) {
+	case 0:
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Get list of nodes */
+	if (NgSendMsg(csock, ".", NGM_GENERIC_COOKIE,
+	    named_only ? NGM_LISTNAMES : NGM_LISTNODES, NULL, 0) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0) {
+		warn("recv msg");
+		return(CMDRTN_ERROR);
+	}
+
+	/* Show each node */
+	printf("There are %d total %snodes:\n",
+	    nlist->numnames, named_only ? "named " : "");
+	for (k = 0; k < nlist->numnames; k++) {
+		char	path[NG_PATHLEN+1];
+		char	*av[3] = { "list", "-n", path };
+
+		snprintf(path, sizeof(path),
+		    "[%lx]:", (u_long) nlist->nodeinfo[k].id);
+		if ((rtn = (*show_cmd.func)(3, av)) != CMDRTN_OK)
+			break;
+	}
+
+	/* Done */
+	return (rtn);
+}
+
diff --git a/usr.sbin/ngctl/main.c b/usr.sbin/ngctl/main.c
new file mode 100644
index 0000000..9a54cc7
--- /dev/null
+++ b/usr.sbin/ngctl/main.c
@@ -0,0 +1,373 @@
+
+/*
+ * main.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+#define PROMPT		"+ "
+#define MAX_ARGS	512
+#define WHITESPACE	" \t\r\n\v\f"
+
+/* Internal functions */
+static int	ReadFile(FILE *fp);
+static int	DoParseCommand(char *line);
+static int	DoCommand(int ac, char **av);
+static int	DoInteractive(void);
+static const	struct ngcmd *FindCommand(const char *string);
+static void	Usage(const char *msg);
+static int	ReadCmd(int ac, char **av);
+static int	HelpCmd(int ac, char **av);
+static int	QuitCmd(int ac, char **av);
+
+/* List of commands */
+static const struct ngcmd *const cmds[] = {
+	&connect_cmd,
+	&debug_cmd,
+	&help_cmd,
+	&list_cmd,
+	&mkpeer_cmd,
+	&name_cmd,
+	&read_cmd,
+	&rmhook_cmd,
+	&show_cmd,
+	&shutdown_cmd,
+	&status_cmd,
+	&types_cmd,
+	&quit_cmd,
+	NULL
+};
+
+/* Commands defined in this file */
+const struct ngcmd read_cmd = {
+	ReadCmd,
+	"read <filename>",
+	"Read and execute commands from a file",
+	NULL
+};
+const struct ngcmd help_cmd = {
+	HelpCmd,
+	"help [command]",
+	"Show command summary or get more help on a specific command",
+	NULL
+};
+const struct ngcmd quit_cmd = {
+	QuitCmd,
+	"quit",
+	"Exit program",
+	NULL
+};
+
+/* Our control and data sockets */
+int	csock, dsock;
+
+/*
+ * main()
+ */
+int
+main(int ac, char *av[])
+{
+	char	name[NG_NODELEN + 1];
+	int	interactive = isatty(0) && isatty(1);
+	FILE	*fp = NULL;
+	int	ch, rtn = 0;
+
+	/* Set default node name */
+	snprintf(name, sizeof(name), "ngctl%d", getpid());
+
+	/* Parse command line */
+	while ((ch = getopt(ac, av, "df:n:")) != EOF) {
+		switch (ch) {
+		case 'd':
+			NgSetDebug(NgSetDebug(-1) + 1);
+			break;
+		case 'f':
+			if (strcmp(optarg, "-") == 0)
+				fp = stdin;
+			else if ((fp = fopen(optarg, "r")) == NULL)
+				err(EX_NOINPUT, "%s", optarg);
+			break;
+		case 'n':
+			snprintf(name, sizeof(name), "%s", optarg);
+			break;
+		case '?':
+		default:
+			Usage((char *)NULL);
+			break;
+		}
+	}
+	ac -= optind;
+	av += optind;
+
+	/* Create a new socket node */
+	if (NgMkSockNode(name, &csock, &dsock) < 0)
+		err(EX_OSERR, "can't create node");
+
+	/* Do commands as requested */
+	if (ac == 0) {
+		if (fp != NULL) {
+			rtn = ReadFile(fp);
+		} else if (interactive) {
+			rtn = DoInteractive();
+		} else
+			Usage("no command specified");
+	} else {
+		rtn = DoCommand(ac, av);
+	}
+
+	/* Convert command return code into system exit code */
+	switch (rtn) {
+	case CMDRTN_OK:
+	case CMDRTN_QUIT:
+		rtn = 0;
+		break;
+	case CMDRTN_USAGE:
+		rtn = EX_USAGE;
+		break;
+	case CMDRTN_ERROR:
+		rtn = EX_OSERR;
+		break;
+	}
+	return(rtn);
+}
+
+/*
+ * Process commands from a file
+ */
+static int
+ReadFile(FILE *fp)
+{
+	char line[LINE_MAX];
+	int num, rtn;
+
+	for (num = 1; fgets(line, sizeof(line), fp) != NULL; num++) {
+		if (*line == '#')
+			continue;
+		if ((rtn = DoParseCommand(line)) != 0) {
+			warnx("line %d: error in file", num);
+			return(rtn);
+		}
+	}
+	return(CMDRTN_OK);
+}
+
+/*
+ * Interactive mode
+ */
+static int
+DoInteractive(void)
+{
+	char buf[LINE_MAX];
+
+	/* Read commands from stdin */
+	(*help_cmd.func)(0, NULL);
+	do {
+		printf("%s", PROMPT);
+		if (fgets(buf, sizeof(buf), stdin) == NULL)
+			break;
+		fflush(stdout);
+	} while (DoParseCommand(buf) != CMDRTN_QUIT);
+	return(CMDRTN_QUIT);
+}
+
+/*
+ * Parse a command line and execute the command
+ */
+static int
+DoParseCommand(char *line)
+{
+	char *av[MAX_ARGS];
+	int ac;
+
+	/* Parse line */
+	for (ac = 0, av[0] = strtok(line, WHITESPACE);
+	    ac < MAX_ARGS - 1 && av[ac];
+	    av[++ac] = strtok(NULL, WHITESPACE));
+
+	/* Do command */
+	return(DoCommand(ac, av));
+}
+
+/*
+ * Execute the command
+ */
+static int
+DoCommand(int ac, char **av)
+{
+	const struct ngcmd *cmd;
+	int rtn;
+
+	if (ac == 0 || *av[0] == 0)
+		return(CMDRTN_OK);
+	if ((cmd = FindCommand(av[0])) == NULL)
+		return(CMDRTN_ERROR);
+	if ((rtn = (*cmd->func)(ac, av)) == CMDRTN_USAGE)
+		warnx("usage: %s", cmd->cmd);
+	return(rtn);
+}
+
+/*
+ * Find a command
+ */
+static const struct ngcmd *
+FindCommand(const char *string)
+{
+	const struct ngcmd *cmd;
+	int k, len, found;
+
+	if (strcmp(string, "?") == 0)
+		string = "help";
+	for (k = 0, found = -1; cmds[k]; k++) {
+		cmd = cmds[k];
+		len = strcspn(cmd->cmd, WHITESPACE);
+		if (len > strlen(string))
+			len = strlen(string);
+		if (!strncasecmp(string, cmd->cmd, len)) {
+			if (found != -1) {
+				warnx("\"%s\": ambiguous command", string);
+				return(NULL);
+			}
+			found = k;
+		}
+	}
+	if (found == -1) {
+		warnx("\"%s\": unknown command", string);
+		return(NULL);
+	}
+	return(cmds[found]);
+}
+
+/*
+ * ReadCmd()
+ */
+static int
+ReadCmd(int ac, char **av)
+{
+	FILE *fp;
+	int rtn;
+
+	/* Open file */
+	switch (ac) {
+	case 2:
+		if ((fp = fopen(av[1], "r")) == NULL)
+			warn("%s", av[1]);
+		return(CMDRTN_ERROR);
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Process it */
+	rtn = ReadFile(fp);
+	fclose(fp);
+	return(rtn);
+}
+
+/*
+ * HelpCmd()
+ */
+static int
+HelpCmd(int ac, char **av)
+{
+	const struct ngcmd *cmd;
+	int k;
+
+	switch (ac) {
+	case 0:
+	case 1:
+		/* Show all commands */
+		printf("Available commands:\n");
+		for (k = 0; cmds[k] != NULL; k++) {
+			char *s, buf[100];
+
+			cmd = cmds[k];
+			snprintf(buf, sizeof(buf), "%s", cmd->cmd);
+			for (s = buf; *s != '\0' && !isspace(*s); s++);
+			*s = '\0';
+			printf("  %-10s %s\n", buf, cmd->desc);
+		}
+		return(CMDRTN_OK);
+	default:
+		/* Show help on a specific command */
+		if ((cmd = FindCommand(av[1])) != NULL) {
+			printf("Usage:    %s\n", cmd->cmd);
+			printf("Summary:  %s\n", cmd->desc);
+			if (cmd->help != NULL) {
+				const char *s;
+				char buf[65];
+				int tot, len, done;
+
+				printf("Description:\n");
+				for (s = cmd->help; *s != '\0'; s += len) {
+					while (isspace(*s))
+						s++;
+					tot = snprintf(buf,
+					    sizeof(buf), "%s", s);
+					len = strlen(buf);
+					done = len == tot;
+					if (!done) {
+						while (len > 0
+						    && !isspace(buf[len-1]))
+							buf[--len] = '\0';
+					}
+					printf("  %s\n", buf);
+				}
+			}
+		}
+	}
+	return(CMDRTN_OK);
+}
+
+/*
+ * QuitCmd()
+ */
+static int
+QuitCmd(int ac, char **av)
+{
+	return(CMDRTN_QUIT);
+}
+
+/*
+ * Usage()
+ */
+static void
+Usage(const char *msg)
+{
+	if (msg)
+		warnx("%s", msg);
+	errx(EX_USAGE, "usage: ngctl [-d] [-f file] [-n name] [command ...]");
+}
+
diff --git a/usr.sbin/ngctl/mkpeer.c b/usr.sbin/ngctl/mkpeer.c
new file mode 100644
index 0000000..c5735e1
--- /dev/null
+++ b/usr.sbin/ngctl/mkpeer.c
@@ -0,0 +1,85 @@
+
+/*
+ * mkpeer.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int MkPeerCmd(int ac, char **av);
+
+const struct ngcmd mkpeer_cmd = {
+	MkPeerCmd,
+	"mkpeer [path] <type> <hook> <peerhook>",
+	"Create and connect a new node to the node at \"path\"",
+	"The mkpeer command atomically creates a new node of type \"type\""
+	" and connects it to the node at \"path\". The hooks used for the"
+	" connection are \"hook\" on the original node and \"peerhook\""
+	" on the new node."
+	" If \"path\" is omitted then \".\" is assumed."
+};
+
+static int
+MkPeerCmd(int ac, char **av)
+{
+	struct ngm_mkpeer mkp;
+	char *path = ".";
+
+	/* Get arguments */
+	switch (ac) {
+	case 5:
+		path = av[1];
+		ac--;
+		av++;
+		/* FALLTHROUGH */
+	case 4:
+		snprintf(mkp.type, sizeof(mkp.type), "%s", av[1]);
+		snprintf(mkp.ourhook, sizeof(mkp.ourhook), "%s", av[2]);
+		snprintf(mkp.peerhook, sizeof(mkp.peerhook), "%s", av[3]);
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Send message */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_MKPEER, &mkp, sizeof(mkp)) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	return(CMDRTN_OK);
+}
+
diff --git a/usr.sbin/ngctl/name.c b/usr.sbin/ngctl/name.c
new file mode 100644
index 0000000..85c6eff
--- /dev/null
+++ b/usr.sbin/ngctl/name.c
@@ -0,0 +1,75 @@
+
+/*
+ * name.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int NameCmd(int ac, char **av);
+
+const struct ngcmd name_cmd = {
+	NameCmd,
+	"name <path> <name>",
+	"Assign name <name> to the node at <path>",
+	NULL
+};
+
+static int
+NameCmd(int ac, char **av)
+{
+	struct ngm_name name;
+	char *path;
+
+	/* Get arguments */
+	switch (ac) {
+	case 3:
+		path = av[1];
+		snprintf(name.name, sizeof(name.name), "%s", av[2]);
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Send message */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_NAME, &name, sizeof(name)) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	return(CMDRTN_OK);
+}
+
diff --git a/usr.sbin/ngctl/ngctl.8 b/usr.sbin/ngctl/ngctl.8
new file mode 100644
index 0000000..ee4f3be
--- /dev/null
+++ b/usr.sbin/ngctl/ngctl.8
@@ -0,0 +1,115 @@
+.\" Copyright (c) 1996-1999 Whistle Communications, Inc.
+.\" All rights reserved.
+.\" 
+.\" Subject to the following obligations and disclaimer of warranty, use and
+.\" redistribution of this software, in source or object code forms, with or
+.\" without modifications are expressly permitted by Whistle Communications;
+.\" provided, however, that:
+.\" 1. Any and all reproductions of the source or object code must include the
+.\"    copyright notice above and the following disclaimer of warranties; and
+.\" 2. No rights are granted, in any manner or form, to use Whistle
+.\"    Communications, Inc. trademarks, including the mark "WHISTLE
+.\"    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+.\"    such appears in the above copyright notice or in the software.
+.\" 
+.\" THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+.\" WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+.\" IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+.\" OF SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\" $Whistle: ngctl.8,v 1.6 1999/01/20 03:19:44 archie Exp $
+.\"
+.Dd January 19, 1999
+.Dt NGCTL 8
+.Os FreeBSD 3
+.Sh NAME
+.Nm ngctl
+.Nd netgraph control utility
+.Sh SYNOPSIS
+.Nm ngctl
+.Op Fl d
+.Op Fl f Ar filename
+.Op Fl n Ar nodename
+.Op Ar command ...
+.Sh DESCRIPTION
+The
+.Nm
+utility creates a new netgraph node of type
+.Em socket
+which can be used to issue netgraph commands.
+If no
+.Fl f
+flag is given, no
+command is supplied on the command line, and standard input is a tty,
+.Nm ngctl
+will enter interactive mode. Otherwise
+.Nm ngctl
+will execute the supplied command(s) and exit immediately.
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl f Ar nodeinfo
+Read commands from the named file.
+A single dash represents the standard input.
+Blank lines and lines starting with a ``#'' are ignored.
+.It Fl n Ar nodename
+Assign
+.Em nodename
+to the newly created netgraph node. The default name is
+.Em ngctlXXX
+where XXX is the process ID number.
+.It Fl d
+Increase the debugging verbosity level.
+.El
+.Sh COMMANDS
+The currently supported commands in
+.Nm ngctl
+are:
+.Pp
+.Bd -literal -offset indent -compact
+connect    Connects two nodes
+debug      Get/set debugging verbosity level
+help       Show command summary or get help on a command
+list       Show information about all nodes
+mkpeer     Create and connect a new node to an existing node
+name       Assign a name to a node
+read       Read and execute commands from a file
+rmhook     Disconnect a node's hook
+show       Show information about a node
+shutdown   Shutdown a node
+status     Get human readable status from a node
+types      Show all installed node types
+quit       Exit program
+.Ed
+.Pp
+The ``help'' command displays the available
+commands, their usage, and a brief description.
+.Sh EXIT VALUE
+The
+.Nm
+utility exits 0 on success, and >0 if an error occurs.
+.Sh SEE ALSO
+.Xr netgraph 3 ,
+.Xr netgraph 4 .
+.Xr nghook 8 .
+.Sh AUTHOR
+Archie Cobbs <archie@whistle.com>
+.Sh HISTORY
+The
+.Em netgraph
+system was designed and first implemented at Whistle Communications, Inc.
+in a version FreeBSD 2.2 customized for the Whistle InterJet.
diff --git a/usr.sbin/ngctl/ngctl.h b/usr.sbin/ngctl/ngctl.h
new file mode 100644
index 0000000..b0fce23
--- /dev/null
+++ b/usr.sbin/ngctl/ngctl.h
@@ -0,0 +1,89 @@
+
+/*
+ * ngctl.h
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <sys/select.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sysexits.h>
+#include <limits.h>
+#include <ctype.h>
+#include <errno.h>
+#include <err.h>
+
+#include <netgraph.h>
+#include <netgraph/ng_socket.h>
+
+/* Command descriptors */
+struct ngcmd {
+	  int		(*func)(int ac, char **av);
+	  const char	*cmd;
+	  const char	*desc;
+	  const char	*help;
+};
+
+/* Command return values */
+#define CMDRTN_OK		0
+#define CMDRTN_USAGE		1
+#define CMDRTN_ERROR		2
+#define CMDRTN_QUIT		3
+
+/* Available commands */
+extern const struct ngcmd connect_cmd;
+extern const struct ngcmd debug_cmd;
+extern const struct ngcmd help_cmd;
+extern const struct ngcmd list_cmd;
+extern const struct ngcmd mkpeer_cmd;
+extern const struct ngcmd name_cmd;
+extern const struct ngcmd read_cmd;
+extern const struct ngcmd rmhook_cmd;
+extern const struct ngcmd show_cmd;
+extern const struct ngcmd shutdown_cmd;
+extern const struct ngcmd status_cmd;
+extern const struct ngcmd types_cmd;
+extern const struct ngcmd quit_cmd;
+
+/* Data and control sockets */
+extern int	csock, dsock;
+
diff --git a/usr.sbin/ngctl/rmhook.c b/usr.sbin/ngctl/rmhook.c
new file mode 100644
index 0000000..551c06f
--- /dev/null
+++ b/usr.sbin/ngctl/rmhook.c
@@ -0,0 +1,81 @@
+
+/*
+ * rmhook.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int RmHookCmd(int ac, char **av);
+
+const struct ngcmd rmhook_cmd = {
+	RmHookCmd,
+	"rmhook [path] <hook>",
+	"Disconnect hook \"hook\" of the node at \"path\"",
+	"The rmhook command forces the node at \"path\" to break the link"
+	" formed by its hook \"hook\", if connected."
+	" If \"path\" is omitted then \".\" is assumed."
+};
+
+static int
+RmHookCmd(int ac, char **av)
+{
+	struct ngm_rmhook rmh;
+	char *path = ".";
+
+	/* Get arguments */
+	switch (ac) {
+	case 3:
+		path = av[1];
+		ac--;
+		av++;
+		/* FALLTHROUGH */
+	case 2:
+		snprintf(rmh.ourhook, sizeof(rmh.ourhook), "%s", av[1]);
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Send message */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_RMHOOK, &rmh, sizeof(rmh)) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	return(CMDRTN_OK);
+}
+
diff --git a/usr.sbin/ngctl/show.c b/usr.sbin/ngctl/show.c
new file mode 100644
index 0000000..7cfdd48
--- /dev/null
+++ b/usr.sbin/ngctl/show.c
@@ -0,0 +1,130 @@
+
+/*
+ * show.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+#define FMT		"  %-15s %-15s %-12s %-15s %-15s\n"
+#define UNNAMED		"<unnamed>"
+#define NOSTATUS	"<no status>"
+
+static int ShowCmd(int ac, char **av);
+
+const struct ngcmd show_cmd = {
+	ShowCmd,
+	"show [-n] <path>",
+	"Show information about the node at <path>",
+	"If the -n flag is given, hooks are not listed."
+};
+
+static int
+ShowCmd(int ac, char **av)
+{
+	char *path;
+	u_char rbuf[16 * 1024];
+	struct ng_mesg *const resp = (struct ng_mesg *) rbuf;
+	struct hooklist *const hlist = (struct hooklist *) resp->data;
+	struct nodeinfo *const ninfo = &hlist->nodeinfo;
+	int ch, no_hooks = 0;
+
+	/* Get options */
+	optind = 1;
+	while ((ch = getopt(ac, av, "n")) != EOF) {
+		switch (ch) {
+		case 'n':
+			no_hooks = 1;
+			break;
+		case '?':
+		default:
+			return(CMDRTN_USAGE);
+			break;
+		}
+	}
+	ac -= optind;
+	av += optind;
+
+	/* Get arguments */
+	switch (ac) {
+	case 1:
+		path = av[0];
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Get node info and hook list */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_LISTHOOKS, NULL, 0) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0) {
+		warn("recv msg");
+		return(CMDRTN_ERROR);
+	}
+
+	/* Show node information */
+	if (!*ninfo->name)
+		snprintf(ninfo->name, sizeof(ninfo->name), "%s", UNNAMED);
+	printf("  Name: %-15s Type: %-15s ID: %08x   Num hooks: %d\n",
+	    ninfo->name, ninfo->type, ninfo->id, ninfo->hooks);
+	if (!no_hooks && ninfo->hooks > 0) {
+		int k;
+
+		printf(FMT, "Local hook", "Peer name",
+		    "Peer type", "Peer ID", "Peer hook");
+		printf(FMT, "----------", "---------",
+		    "---------", "-------", "---------");
+		for (k = 0; k < ninfo->hooks; k++) {
+			struct linkinfo *const link = &hlist->link[k];
+			struct nodeinfo *const peer = &hlist->link[k].nodeinfo;
+			char idbuf[20];
+
+			if (!*peer->name) {
+				snprintf(peer->name, sizeof(peer->name),
+				  "%s", UNNAMED);
+			}
+			snprintf(idbuf, sizeof(idbuf), "%08x", peer->id);
+			printf(FMT, link->ourhook, peer->name,
+			    peer->type, idbuf, link->peerhook);
+		}
+	}
+	return(CMDRTN_OK);
+}
+
+
diff --git a/usr.sbin/ngctl/shutdown.c b/usr.sbin/ngctl/shutdown.c
new file mode 100644
index 0000000..769f122
--- /dev/null
+++ b/usr.sbin/ngctl/shutdown.c
@@ -0,0 +1,74 @@
+
+/*
+ * shutdown.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int ShutdownCmd(int ac, char **av);
+
+const struct ngcmd shutdown_cmd = {
+	ShutdownCmd,
+	"shutdown <path>",
+	"Shutdown the node at <path>",
+	NULL
+};
+
+static int
+ShutdownCmd(int ac, char **av)
+{
+	char *path;
+
+	/* Get arguments */
+	switch (ac) {
+	case 2:
+		path = av[1];
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Shutdown node */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_SHUTDOWN, NULL, 0) < 0) {
+		warn("shutdown");
+		return(CMDRTN_ERROR);
+	}
+	return(CMDRTN_OK);
+}
+
+
diff --git a/usr.sbin/ngctl/status.c b/usr.sbin/ngctl/status.c
new file mode 100644
index 0000000..75706b3
--- /dev/null
+++ b/usr.sbin/ngctl/status.c
@@ -0,0 +1,95 @@
+
+/*
+ * status.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+#define NOSTATUS	"<no status>"
+
+static int StatusCmd(int ac, char **av);
+
+const struct ngcmd status_cmd = {
+	StatusCmd,
+	"status <path>",
+	"Get human readable status information from the node at <path>",
+	NULL
+};
+
+static int
+StatusCmd(int ac, char **av)
+{
+	u_char sbuf[sizeof(struct ng_mesg) + NG_TEXTRESPONSE];
+	struct ng_mesg *const resp = (struct ng_mesg *) sbuf;
+	char *const status = (char *) resp->data;
+	char *path;
+	int nostat = 0;
+
+	/* Get arguments */
+	switch (ac) {
+	case 2:
+		path = av[1];
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Get node status summary */
+	if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
+	    NGM_TEXT_STATUS, NULL, 0) < 0) {
+		switch (errno) {
+		case EINVAL:
+			nostat = 1;
+			break;
+		default:
+			warn("send msg");
+			return(CMDRTN_ERROR);
+		}
+	} else {
+		if (NgRecvMsg(csock, resp, sizeof(sbuf), NULL) < 0
+		    || (resp->header.flags & NGF_RESP) == 0)
+			nostat = 1;
+	}
+
+	/* Show it */
+	if (nostat)
+		printf("No status available for \"%s\"\n", path);
+	else
+		printf("Status for \"%s\":\n%s\n", path, status);
+	return(CMDRTN_OK);
+}
+
diff --git a/usr.sbin/ngctl/types.c b/usr.sbin/ngctl/types.c
new file mode 100644
index 0000000..b7be6aa
--- /dev/null
+++ b/usr.sbin/ngctl/types.c
@@ -0,0 +1,92 @@
+
+/*
+ * types.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "ngctl.h"
+
+static int TypesCmd(int ac, char **av);
+
+const struct ngcmd types_cmd = {
+	TypesCmd,
+	"types",
+	"Show information about all installed node types",
+	NULL
+};
+
+static int
+TypesCmd(int ac, char **av)
+{
+	u_char rbuf[16 * 1024];
+	struct ng_mesg *const resp = (struct ng_mesg *) rbuf;
+	struct typelist *const tlist = (struct typelist *) resp->data;
+	int k, rtn = CMDRTN_OK;
+
+	/* Get arguments */
+	switch (ac) {
+	case 1:
+		break;
+	default:
+		return(CMDRTN_USAGE);
+	}
+
+	/* Get list of types */
+	if (NgSendMsg(csock, ".", NGM_GENERIC_COOKIE,
+	    NGM_LISTTYPES, NULL, 0) < 0) {
+		warn("send msg");
+		return(CMDRTN_ERROR);
+	}
+	if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0) {
+		warn("recv msg");
+		return(CMDRTN_ERROR);
+	}
+
+	/* Show each type */
+	printf("There are %d total types:\n", tlist->numtypes);
+	if (tlist->numtypes > 0) {
+		printf("%15s   Number of living nodes\n", "Type name");
+		printf("%15s   ----------------------\n", "---------");
+	}
+	for (k = 0; k < tlist->numtypes; k++) {
+		struct typeinfo *const ti = &tlist->typeinfo[k];
+		printf("%15s   %5d\n", ti->typename, ti->numnodes);
+	}
+
+	/* Done */
+	return (rtn);
+}
+
diff --git a/usr.sbin/nghook/Makefile b/usr.sbin/nghook/Makefile
new file mode 100644
index 0000000..1130ec9
--- /dev/null
+++ b/usr.sbin/nghook/Makefile
@@ -0,0 +1,11 @@
+# $FreeBSD$
+# $Whistle: Makefile,v 1.4 1999/01/16 04:44:33 archie Exp $
+
+PROG=		nghook
+SRCS=		main.c
+MAN8=		nghook.8
+DPADD=		${LIBNETGRAPH}
+LDADD=		-lnetgraph
+COPTS+=		-g -Wall -O2 -Werror
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/nghook/main.c b/usr.sbin/nghook/main.c
new file mode 100644
index 0000000..ce29d9d
--- /dev/null
+++ b/usr.sbin/nghook/main.c
@@ -0,0 +1,220 @@
+
+/*
+ * main.c
+ *
+ * Copyright (c) 1996-1999 Whistle Communications, Inc.
+ * All rights reserved.
+ * 
+ * Subject to the following obligations and disclaimer of warranty, use and
+ * redistribution of this software, in source or object code forms, with or
+ * without modifications are expressly permitted by Whistle Communications;
+ * provided, however, that:
+ * 1. Any and all reproductions of the source or object code must include the
+ *    copyright notice above and the following disclaimer of warranties; and
+ * 2. No rights are granted, in any manner or form, to use Whistle
+ *    Communications, Inc. trademarks, including the mark "WHISTLE
+ *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+ *    such appears in the above copyright notice or in the software.
+ * 
+ * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+ * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+ * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+ * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+ * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+ * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+ * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+ * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+ * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ * $Whistle: main.c,v 1.9 1999/01/20 00:26:26 archie Exp $
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <sysexits.h>
+#include <errno.h>
+#include <err.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/select.h>
+
+#include <netgraph.h>
+
+#define DEFAULT_HOOKNAME	"debug"
+#define NG_SOCK_HOOK_NAME	"hook"
+
+#define BUF_SIZE		(64 * 1024)
+
+static void	WriteAscii(u_char * buf, int len);
+static void	Usage(void);
+
+/*
+ * main()
+ */
+int
+main(int ac, char *av[])
+{
+	struct ngm_connect ngc;
+	char   *path = NULL, *hook = DEFAULT_HOOKNAME;
+	int     csock, dsock;
+	int     asciiFlag = 0;
+	int	ch;
+
+	/* Parse flags */
+	while ((ch = getopt(ac, av, "da")) != EOF) {
+		switch (ch) {
+		case 'd':
+			NgSetDebug(NgSetDebug(-1) + 1);
+			break;
+		case 'a':
+			asciiFlag = 1;
+			break;
+		case '?':
+		default:
+			Usage();
+		}
+	}
+	ac -= optind;
+	av += optind;
+
+	/* Get params */
+	switch (ac) {
+	case 2:
+		hook = av[1];
+		/* FALLTHROUGH */
+	case 1:
+		path = av[0];
+		break;
+	default:
+		Usage();
+	}
+
+	/* Get sockets */
+	if (NgMkSockNode(NULL, &csock, &dsock) < 0)
+		errx(EX_OSERR, "can't get sockets");
+
+	/* Connect socket node to specified node */
+	snprintf(ngc.path, sizeof(ngc.path), "%s", path);
+	snprintf(ngc.ourhook, sizeof(ngc.ourhook), NG_SOCK_HOOK_NAME);
+	snprintf(ngc.peerhook, sizeof(ngc.peerhook), "%s", hook);
+
+	if (NgSendMsg(csock, ".",
+	    NGM_GENERIC_COOKIE, NGM_CONNECT, &ngc, sizeof(ngc)) < 0)
+		errx(EX_OSERR, "can't connect to node");
+
+	/* Relay data */
+	while (1) {
+		fd_set  rfds;
+
+		/* Setup bits */
+		FD_ZERO(&rfds);
+		FD_SET(0, &rfds);
+		FD_SET(dsock, &rfds);
+
+		/* Wait for something to happen */
+		if (select(FD_SETSIZE, &rfds, NULL, NULL, NULL) < 0)
+			err(EX_OSERR, "select");
+
+		/* Check data from socket */
+		if (FD_ISSET(dsock, &rfds)) {
+			char    buf[BUF_SIZE];
+			int     rl, wl;
+
+			/* Read packet from socket */
+			if ((rl = NgRecvData(dsock,
+			    buf, sizeof(buf), NULL)) < 0)
+				err(EX_OSERR, "read(hook)");
+			if (rl == 0)
+				errx(EX_OSERR, "read EOF from hook?!");
+
+			/* Write packet to stdout */
+			if (asciiFlag)
+				WriteAscii((u_char *) buf, rl);
+			else if ((wl = write(1, buf, rl)) != rl) {
+				if (wl < 0) {
+					err(EX_OSERR, "write(stdout)");
+				} else {
+					errx(EX_OSERR,
+					    "stdout: read %d, wrote %d",
+					    rl, wl);
+				}
+			}
+		}
+
+		/* Check data from stdin */
+		if (FD_ISSET(0, &rfds)) {
+			char    buf[BUF_SIZE];
+			int     rl;
+
+			/* Read packet from stdin */
+			if ((rl = read(0, buf, sizeof(buf))) < 0)
+				err(EX_OSERR, "read(stdin)");
+			if (rl == 0)
+				errx(EX_OSERR, "EOF(stdin)");
+
+			/* Write packet to socket */
+			if (NgSendData(dsock, NG_SOCK_HOOK_NAME, buf, rl) < 0)
+				err(EX_OSERR, "write(hook)");
+		}
+	}
+}
+
+/*
+ * Dump data in hex and ASCII form
+ */
+static void
+WriteAscii(u_char *buf, int len)
+{
+	char    ch, sbuf[100];
+	int     k, count;
+
+	for (count = 0; count < len; count += 16) {
+		snprintf(sbuf, sizeof(sbuf), "%04x:  ", count);
+		for (k = 0; k < 16; k++)
+			if (count + k < len)
+				snprintf(sbuf + strlen(sbuf),
+				    sizeof(sbuf) - strlen(sbuf),
+				    "%02x ", buf[count + k]);
+			else
+				snprintf(sbuf + strlen(sbuf),
+				    sizeof(sbuf) - strlen(sbuf), "   ");
+		snprintf(sbuf + strlen(sbuf), sizeof(sbuf) - strlen(sbuf), " ");
+		for (k = 0; k < 16; k++)
+			if (count + k < len) {
+				ch = isprint(buf[count + k]) ?
+				    buf[count + k] : '.';
+				snprintf(sbuf + strlen(sbuf),
+				    sizeof(sbuf) - strlen(sbuf), "%c", ch);
+			} else
+				snprintf(sbuf + strlen(sbuf),
+				    sizeof(sbuf) - strlen(sbuf), "   ");
+		snprintf(sbuf + strlen(sbuf),
+		    sizeof(sbuf) - strlen(sbuf), "\n");
+		(void) write(1, sbuf, strlen(sbuf));
+	}
+	ch = '\n';
+	write(1, &ch, 1);
+}
+
+/*
+ * Display usage and exit
+ */
+static void
+Usage(void)
+{
+	errx(EX_USAGE, "usage: nghook [-da] path [hookname]");
+}
+
diff --git a/usr.sbin/nghook/nghook.8 b/usr.sbin/nghook/nghook.8
new file mode 100644
index 0000000..33016b0
--- /dev/null
+++ b/usr.sbin/nghook/nghook.8
@@ -0,0 +1,87 @@
+.\" Copyright (c) 1996-1999 Whistle Communications, Inc.
+.\" All rights reserved.
+.\" 
+.\" Subject to the following obligations and disclaimer of warranty, use and
+.\" redistribution of this software, in source or object code forms, with or
+.\" without modifications are expressly permitted by Whistle Communications;
+.\" provided, however, that:
+.\" 1. Any and all reproductions of the source or object code must include the
+.\"    copyright notice above and the following disclaimer of warranties; and
+.\" 2. No rights are granted, in any manner or form, to use Whistle
+.\"    Communications, Inc. trademarks, including the mark "WHISTLE
+.\"    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
+.\"    such appears in the above copyright notice or in the software.
+.\" 
+.\" THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
+.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
+.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
+.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+.\" WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
+.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
+.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
+.\" IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
+.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
+.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
+.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
+.\" OF SUCH DAMAGE.
+.\"
+.\"  $FreeBSD$
+.\" $Whistle: nghook.8,v 1.4 1999/01/20 03:19:45 archie Exp $
+.\"
+.Dd January 19, 1999
+.Dt NGHOOK 8
+.Os FreeBSD 3
+.Sh NAME
+.Nm nghook
+.Nd connect to a
+.Xr netgraph 8
+node
+.Sh SYNOPSIS
+.Nm
+.Op Fl a
+.Op Fl d
+.Ar path
+.Op Ar hookname
+.Sh DESCRIPTION
+.Nm
+creates a
+.Xr netgraph 8
+socket type node and connects it to hook
+.Ar hookname
+of the node found at
+.Ar path .
+If
+.Ar hookname
+is omitted, ``debug'' is assumed.
+.Pp
+At this point all data written to standard input is sent
+to the node and all data received from the node is relayed
+to standard output.
+.Pp
+The options are as follows:
+.Pp
+.Bl -tag -width indent
+.It Fl a
+Output each read packet in ASCII.
+.It Fl d
+Increase the debugging verbosity level.
+.El
+.Sh BUGS
+Although all input is read in unbuffered mode, 
+there's no way to control the packetization of the input.
+.Sh SEE ALSO
+.Xr netgraph 4 ,
+.Xr netgraph 3 ,
+.Xr ngctl 8 .
+.Sh AUTHOR
+Archie Cobbs <archie@whistle.com>
+.Sh HISTORY
+The
+.Em netgraph
+system was designed and first implemented at Whistle Communications, Inc.
+in a version FreeBSD 2.2 customized for the Whistle InterJet.