Added in stuff from 960121. Fixed several bugs in ypxfr.

4 files changed, 800 insertions, 0 deletions

diff --git a/usr.sbin/ypserv/mknetid/Makefile b/usr.sbin/ypserv/mknetid/Makefile
new file mode 100644
index 00000000000..3aa1e179cfe
--- /dev/null
+++ b/usr.sbin/ypserv/mknetid/Makefile
@@ -0,0 +1,7 @@
+#	from: @(#)Makefile	5.8 (Berkeley) 7/28/90
+#	$Id: Makefile,v 1.1 1996/03/02 03:01:32 dm Exp $
+
+PROG=	mknetid
+MAN=	mknetid.8 netid.5
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/ypserv/mknetid/mknetid.8 b/usr.sbin/ypserv/mknetid/mknetid.8
new file mode 100644
index 00000000000..27ec18d64c9
--- /dev/null
+++ b/usr.sbin/ypserv/mknetid/mknetid.8
@@ -0,0 +1,99 @@
+.\" Copyright (c) 1996 Mats O Jansson <moj@stacken.kth.se>
+.\" 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 Mats O Jansson
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+.\"
+.\"	$Id: mknetid.8,v 1.1 1996/03/02 03:01:33 dm Exp $
+.\"
+.Dd Januari 13, 1996
+.Dt MKNETID 8
+.Os 
+.Sh NAME
+.Nm mknetid
+.Nd a YP filter program
+.Sh SYNOPSIS
+.Nm /usr/sbin/mknetid
+.Op Fl d Ar domain
+.Op Fl q
+.Op Fl p Ar passwdfile
+.Op Fl g Ar groupfile
+.Op Fl h Ar hostfile
+.Op Fl m Ar netidfile
+.Sh DESCRIPTION
+.Nm Mknetid
+is used to create a map named 
+.Ar netid.byname .
+The map consists of information from
+.Xr passwd 5 ,
+.Xr group 5
+and
+.Xr hosts 5 
+eventually concatenated with a
+.Xr netid 5
+file.
+.Pp
+The options are as follows:
+.Bl -tag -width indent
+.It Fl d Ar domain
+Which yp-domain if not default yp-domain.
+.It Fl q
+Keep quiet about multipy occuraces of a uid. Ignore all but the first.
+.It Fl p Ar passwdfile
+Alternate
+.Xr passwd 5
+file. Default is
+.Nm /etc/passwd .
+.It Fl g Ar groupfile
+Alternate
+.Xr group 5
+file. Default is
+.Nm /etc/group .
+.It Fl h Ar hostfile
+Alternate
+.Xr hosts 5 Default is
+.Nm /etc/hosts .
+file
+.It Fl m Ar netidfile
+Alternate
+.Xr netid 5 Default is
+.Nm /etc/netid .
+file.
+.El
+.Sh FILES
+.Bl -tag -width /etc/passwd -compact
+.It Pa /etc/passwd
+.It Pa /etc/group
+.It Pa /etc/hosts
+.It Pa /etc/netid
+.El
+.Sh SEE ALSO
+.Xr passwd 5 ,
+.Xr group 5 ,
+.Xr hosts 5 ,
+.Xr netid 5
+.Sh AUTHOR
+Mats O Jansson <moj@stacken.kth.se>
diff --git a/usr.sbin/ypserv/mknetid/mknetid.c b/usr.sbin/ypserv/mknetid/mknetid.c
new file mode 100644
index 00000000000..a9542510e1b
--- /dev/null
+++ b/usr.sbin/ypserv/mknetid/mknetid.c
@@ -0,0 +1,613 @@
+/*
+ * Copyright (c) 1996 Mats O Jansson <moj@stacken.kth.se>
+ * 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 Mats O Jansson
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 rcsid[] = "$Id: mknetid.c,v 1.1 1996/03/02 03:01:34 dm Exp $";
+#endif
+
+#include <sys/param.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <pwd.h>
+#include <grp.h>
+#include <netdb.h>
+
+struct user {
+	char	*usr_name;		/* user name */
+	int	usr_uid;		/* user uid */
+	int	usr_gid;		/* user gid */
+	int	gid_count;		/* number of gids */
+	int	gid[NGROUPS];		/* additional gids */
+	struct user *prev,*next;	/* links in read order */
+	struct user *hprev,*hnext;	/* links in hash order */
+};
+
+#ifdef HOSTS
+char *HostFile = HOSTS;
+#else
+char *HostFile = _PATH_HOSTS;
+#endif
+
+#ifdef PASSWD
+char *PasswdFile = PASSWD;
+#else
+char *PasswdFile = _PATH_PASSWD;
+#endif
+
+#ifdef GROUP
+char *GroupFile = GROUP;
+#else
+char *GroupFile = _PATH_GROUP;
+#endif
+
+#ifdef NETID
+char *NetidFile = NETID;
+#else
+char *NetidFile = "/etc/netid";
+#endif
+
+#define HASHMAX 55
+
+char *ProgramName = "mknetid";
+struct user *root = NULL, *tail = NULL;
+struct user *hroot[HASHMAX], *htail[HASHMAX];
+
+static int read_line(fp, buf, size)
+	FILE *fp;
+	char *buf;
+	int size;
+{
+	int done = 0;
+
+	do {
+		while (fgets(buf, size, fp)) {
+			int len = strlen(buf);
+			done += len;
+			if (len > 1 && buf[len-2] == '\\' &&
+					buf[len-1] == '\n') {
+				int ch;
+				buf += len - 2;
+				size -= len - 2;
+				*buf = '\n'; buf[1] = '\0';
+				/*
+				 * Skip leading white space on next line
+				 */
+				while ((ch = getc(fp)) != EOF &&
+					isascii(ch) && isspace(ch))
+						;
+				(void) ungetc(ch, fp);
+			} else {
+				return done;
+			}
+		}
+	} while (size > 0 && !feof(fp));
+
+	return done;
+}
+
+int
+hashidx(key)
+char key;
+{
+	if (key < 'A')
+		return(0);
+	if (key <= 'Z')
+		return(1 + key - 'A');
+	if (key < 'a')
+		return(27);
+	if (key <= 'z')
+		return(28 + key - 'a');
+	return(54);
+}
+
+void add_user(username, uid, gid)
+char *username, *uid, *gid;
+{
+	struct user *u;
+	int idx;
+
+	u = (struct user *) malloc(sizeof(struct user));
+	bzero((void *) u,sizeof(struct user));
+	u->usr_name = (char *) malloc(strlen(username) + 1);
+	strcpy(u->usr_name,username);
+	u->usr_uid=atoi(uid);
+	u->usr_gid=atoi(gid);
+	u->gid_count=-1;
+	if (root == NULL) {
+		root = tail = u;
+	} else {
+		u->prev = tail;
+		tail->next = u;
+		tail = u;
+	}
+	idx = hashidx(username[0]);
+	if (hroot[idx] == NULL) {
+		hroot[idx] = htail[idx] = u;
+	} else {
+		u->hprev = htail[idx];
+		htail[idx]->hnext = u;
+		htail[idx] = u;
+	}
+}
+
+void add_group(username, gid)
+char *username, *gid;
+{
+	struct user *u;
+	int idx, g;
+
+	idx = hashidx(username[0]);
+	u = hroot[idx];
+	g = atoi(gid);
+	
+	while (u != NULL) {
+		if (strcmp(username,u->usr_name) == 0) {
+			if (g != u->usr_gid) {
+				u->gid_count++;
+				if (u->gid_count < NGROUPS) {
+					u->gid[u->gid_count]=atoi(gid);
+				}
+			}
+			u = htail[idx];
+		}
+		u = u->hnext;
+	}
+}
+
+void
+read_passwd(pfile, fname)
+FILE *pfile;
+char *fname;
+{
+	char  line[1024];
+	int   line_no = 0;
+	int   len, colon;
+	char  *p,*k,*u,*g;
+
+	while (read_line(pfile,line,sizeof(line))) {
+		
+		line_no++;
+		len = strlen(line);
+		
+		if (len > 0) {
+			if (line[0] == '#')
+				continue;
+		}
+
+		/*
+		 * Check if we have the whole line
+		 */ 
+		
+		if (line[len-1] != '\n') {
+			fprintf(stderr,
+				"line %d in \"%s\" is too long\n",
+				line_no, fname);
+		} else {
+			line[len-1] = '\0';
+		}
+
+		p = (char *) &line;
+		
+		k = p; colon = 0;
+		while (*k != '\0') {
+			if (*k == ':')
+				colon++;
+			k++;
+		}
+
+		if (colon > 0) {
+			k = p;			     /* save start of key  */
+			while (*p != ':') { p++; };  /* find first "colon" */
+			if (*p==':') { *p = '\0'; p++; }; /* terminate key */
+			if (strlen(k) == 1) {
+				if (*k == '+')
+					continue;
+			}
+		}
+		
+		if (colon < 4) {
+			fprintf(stderr,
+				"syntax error at line %d in \"%s\"\n",
+				line_no, fname);
+			continue;
+		}
+
+		while (*p != ':') { p++; };	/* find second "colon" */
+		if (*p==':') { *p = '\0'; p++; }; /* terminate passwd */
+		u = p;
+		while (*p != ':') { p++; };	/* find third "colon" */
+		if (*p==':') { *p = '\0'; p++; }; /* terminate uid */
+		g = p;
+		while (*p != ':') { p++; };	/* find forth "colon" */
+		if (*p==':') { *p = '\0'; p++; }; /* terminate gid */
+		while(*p != '\0') { p++; };	/* find end of string */
+		
+		add_user(k,u,g);
+	}
+}
+
+int
+isgsep(ch)
+char ch;
+{
+	int ret;
+
+	switch(ch)  {
+	case ',':
+	case ' ':
+	case '\t':
+	case '\0':
+		ret = 1;
+		break;
+	default:
+		ret = 0;
+	}
+
+	return ret;
+}
+
+void
+read_group(gfile, fname)
+FILE *gfile;
+char *fname;
+{
+	char  line[2048];
+	int   line_no = 0;
+	int   len, colon;
+	char  *p,*k,*u,*g;
+
+	while (read_line(gfile,line,sizeof(line))) {
+		
+		line_no++;
+		len = strlen(line);
+		
+		if (len > 0) {
+			if (line[0] == '#')
+				continue;
+		}
+
+		/*
+		 * Check if we have the whole line
+		 */ 
+		
+		if (line[len-1] != '\n') {
+			fprintf(stderr,
+				"line %d in \"%s\" is too long\n",
+				line_no, fname);
+		} else {
+			line[len-1] = '\0';
+		}
+
+		p = (char *) &line;
+		
+		k = p; colon = 0;
+		while (*k != '\0') {
+			if (*k == ':')
+				colon++;
+			k++;
+		}
+
+		if (colon > 0) {
+			k = p;			     /* save start of key  */
+			while (*p != ':') { p++; };  /* find first "colon" */
+			if (*p==':') { *p = '\0'; p++; }; /* terminate key */
+			if (strlen(k) == 1) {
+				if (*k == '+')
+					continue;
+			}
+		}
+		
+		if (colon < 3) {
+			fprintf(stderr,
+				"syntax error at line %d in \"%s\"\n",
+				line_no, fname);
+			continue;
+		}
+
+		while (*p != ':') { p++; };	/* find second "colon" */
+		if (*p==':') { *p = '\0'; p++; }; /* terminate passwd */
+		g = p;
+		while (*p != ':') { p++; };	/* find third "colon" */
+		if (*p==':') { *p = '\0'; p++; }; /* terminate gid */
+
+		u = p;
+
+		while (*u != '\0') {
+			while (!isgsep(*p)) { p++; };	/* find separator */
+			if (*p != '\0') {
+				*p = '\0';
+				if (u != p) {
+					add_group(u,g);
+				}
+				p++;
+			} else {
+				if (u != p) {
+					add_group(u,g);
+				}
+			}
+			u = p;
+		}
+	}
+}
+
+void
+print_passwd_group(qflag,domain)
+int qflag;
+char *domain;
+{
+	struct user *u,*p;
+	int i;
+
+	u = root;
+
+	while (u != NULL) {
+		p = root;
+		while(p->usr_uid != u->usr_uid) {
+			p = p->next;
+		}
+		if (p != u) {
+			if (!qflag) {
+				fprintf(stderr,
+					"%s: unix.%d@%s %s\n",
+					ProgramName,
+					u->usr_uid,
+					domain,
+					"multiply defined, other definitions ignored");
+			}
+		} else {
+			printf("unix.%d@%s %d:%d",
+				u->usr_uid,
+				domain,
+			       u->usr_uid,
+			       u->usr_gid);
+			if (u->gid_count >= 0) {
+				i=0;
+				while (i <= u->gid_count) {
+					printf(",%d",u->gid[i]);
+					i++;
+				}
+			}
+			printf("\n");
+		}
+		u = u->next;
+	}
+}
+
+void
+print_hosts(pfile, fname, domain)
+FILE *pfile;
+char *fname, *domain;
+{
+	char  line[1024];
+	int   line_no = 0;
+	int   len, colon;
+	char  *p,*k,*u;
+
+	while (read_line(pfile,line,sizeof(line))) {
+		
+		line_no++;
+		len = strlen(line);
+		
+		if (len > 0) {
+			if (line[0] == '#')
+				continue;
+		}
+
+		/*
+		 * Check if we have the whole line
+		 */ 
+		
+		if (line[len-1] != '\n') {
+			fprintf(stderr,
+				"line %d in \"%s\" is too long\n",
+				line_no, fname);
+		} else {
+			line[len-1] = '\0';
+		}
+
+		p = (char *) &line;
+		
+		k = p;				/* save start of key  */
+		while (!isspace(*p)) { p++; };	/* find first "space" */
+		while (isspace(*p)) {		/* replace space with <NUL> */
+			*p = '\0';
+			p++;
+		}
+
+		u = p;
+		while (p != NULL) {
+			if (*p == '\0') {
+				p = NULL;
+			} else {
+				if (!isspace(*p)) {
+					p++;
+				} else {
+					*p = '\0';
+					p = NULL;
+				}
+			}
+		}
+
+		printf("unix.%s@%s 0:%s\n",
+		       u,
+		       domain,
+		       u);
+	}
+}
+
+void
+print_netid(mfile, fname)
+FILE *mfile;
+char *fname;
+{
+	char  line[1024];
+	int   line_no = 0;
+	int   len, colon;
+	char  *p,*k,*u;
+
+	while (read_line(mfile,line,sizeof(line))) {
+		
+		line_no++;
+		len = strlen(line);
+		
+		if (len > 0) {
+			if (line[0] == '#')
+				continue;
+		}
+
+		/*
+		 * Check if we have the whole line
+		 */ 
+		
+		if (line[len-1] != '\n') {
+			fprintf(stderr,
+				"line %d in \"%s\" is too long\n",
+				line_no, fname);
+		} else {
+			line[len-1] = '\0';
+		}
+
+		p = (char *) &line;
+		
+		k = p;				/* save start of key  */
+		while (!isspace(*p)) { p++; };	/* find first "space" */
+		while (isspace(*p)) {		/* replace space with <NUL> */
+			*p = '\0';
+			p++;
+		}
+
+		u = p;
+		while (p != NULL) {
+			if (*p == '\0') {
+				p = NULL;
+			} else {
+				if (!isspace(*p)) {
+					p++;
+				} else {
+					*p = '\0';
+					p = NULL;
+				}
+			}
+		}
+
+		printf("%s %s\n",k,u);
+	}
+}
+
+int
+main (argc,argv)
+int argc;
+char *argv[];
+{
+	int	qflag, ch, usage;
+	char   *domain;
+	FILE   *pfile, *gfile, *hfile, *mfile;
+
+	qflag = usage = 0;
+	domain = NULL;
+	
+	while ((ch = getopt(argc, argv, "d:g:h:m:p:q")) != EOF)
+		switch (ch) {
+			case 'd':
+				domain = optarg;
+				break;
+			case 'g':
+				GroupFile = optarg;
+				break;
+			case 'h':
+				HostFile = optarg;
+				break;
+			case 'm':
+				NetidFile = optarg;
+				break;
+			case 'p':
+				PasswdFile = optarg;
+				break;
+			case 'q':
+				qflag++;
+				break;
+			default:
+				usage++;
+				break;
+		}
+	
+	if (argc > optind) {
+	  usage++;
+	}
+
+	if (usage) {
+		fprintf(stderr,
+			"usage:\t%s [-d domain] [-q] [-p passwdfile] [-g groupfile]\n\t\t[-h hostfile] [-m netidfile]\n",
+			ProgramName);
+		exit(1);
+	}
+	
+	if (domain == NULL) {
+		yp_get_default_domain(&domain);
+	}
+
+	pfile = fopen(PasswdFile, "r");
+	if (pfile == NULL) {
+		fprintf(stderr,"%s: can't open file \"%s\"\n",
+			ProgramName, PasswdFile);
+		exit(1);
+	}
+
+	gfile = fopen(GroupFile, "r");
+	if (gfile == NULL) {
+		fprintf(stderr,"%s: can't open file \"%s\"\n",
+			ProgramName, PasswdFile);
+		exit(1);		
+	}
+
+	hfile = fopen(HostFile, "r");
+	if (hfile == NULL) {
+		fprintf(stderr,"%s: can't open file \"%s\"\n",
+			ProgramName, PasswdFile);
+		exit(1);
+	}
+
+	printf("NetidFile: %s\n",NetidFile);
+	mfile = fopen(NetidFile, "r");
+
+	read_passwd(pfile,PasswdFile);
+	read_group(gfile,GroupFile);
+
+	print_passwd_group(qflag,domain);
+	print_hosts(hfile,HostFile,domain);
+	if (mfile != NULL) {
+		print_netid(mfile,NetidFile);
+	}
+
+	return(0);
+  
+}
diff --git a/usr.sbin/ypserv/mknetid/netid.5 b/usr.sbin/ypserv/mknetid/netid.5
new file mode 100644
index 00000000000..a4bafdc251d
--- /dev/null
+++ b/usr.sbin/ypserv/mknetid/netid.5
@@ -0,0 +1,81 @@
+.\" Copyright (c) 1996 Mats O Jansson <moj@stacken.kth.se>
+.\" 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 Mats O Jansson
+.\" 4. The name of the author may not be used to endorse or promote products
+.\"    derived from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+.\"
+.\"	$Id: netid.5,v 1.1 1996/03/02 03:01:35 dm Exp $
+.\"
+.Dd January 13, 1996
+.Dt NETID 5
+.Os 
+.Sh NAME
+.Nm netid
+.Nd 
+.Nm YP
+network credential file
+.Sh DESCRIPTION
+Files in
+.Nm netid
+format is rare. One lives in the
+.Nm YP
+map
+.Nm netid.byname .
+The format is rather simple. Each row consists of two
+items, a key and a value. When created by
+.Xr mknetid 8
+there is three kind of records.
+.Pp
+The first type is information about which gids a uid has:
+.Bd -literal
+unix.<uid>@<yp-domain> <uid>:<gid>,<gid>
+.Ed
+.Pp
+The second type has informations about hosts:
+.Bd -literal
+unix.<hostname>@<yp-domain> 0:<hostname>
+.Ed
+.Pp
+The third type is records from a 
+.Xr netid 5
+file other than the two types above.
+.Sh EXAMPLES
+.Pp
+A configuration file might appear as follows:
+.Bd -literal
+unix.10714@kaka 10714:400,10
+unix.jodie@kaka 0:jodie
+.Ed
+.Sh FILES
+.Bl -tag -width /etc/netid -compact
+.It Pa /etc/netid
+A file for lines not generated automatic by
+.Xr mknetid 8 .
+.El
+.Sh SEE ALSO
+.Xr mknetid 8
+.Sh AUTHOR
+Mats O Jansson <moj@stacken.kth.se>