Merge in changes to support the new rpc.yppasswdd(8) and fix a few bugs.

In passwd(1):

- Gut most of yp_passwd.c and leave only a few things that aren't common
  to pw_yp.c.

- Add support for -d and -h flags to select domains and NIS server hosts
  to use when updating NIS passwords. This allows passwd(1) to be used
  for changing NIS passwords from machines that aren't configured as
  NIS clients. (This is mostly to allow passwd(1) to work on NIS master
  servers that aren't configured as clients -- an NIS server need not
  necessarily be configured as a client itself.)

  NOTE: Realize that having the ability to specify a domain and hostname
  lets you use passwd(1) (and chpass(1) too) to submit update requests
  to yppasswd daemons running on remote servers in remote domains which
  you may not even be bound to. For example, my machine at home is not
  an NIS client of the servers on the network that I manage, yet I can
  easily change my password at work using my FreeBSD box at home by doing:
  'passwd -d work.net.domain -h any.nis.server.on.my.net wpaul'. (Yes,
  I do use securenets at work; temporarily modified my securenets file
  to give my home system access.) Some people may not be too thrilled
  with this idea. Those who don't like this feature can recompile passwd(1)
  and chpass(1) with -DPARANOID to restrict the use of these flags to
  the superuser.

  (Oh, I should be adding proper securenets support to ypserv(8) and
  rpc.yppasswdd(8) over the weekend.)

- Merge in changes to allow root on the NIS master server to bypass
  authentication and change any user's NIS password. (The super-user
  on the NIS master already has privileges to do this, but doing it
  through passwd(1) is much easier than updating the maps by hand.)
  Note that passwd(1) communicates with rpc.yppasswdd(8) via a UNIX
  domain socket instead of via standard RPC/IP in this case.

- Update man page.

In chpass(1):

- Fix pw_yp.c to work properly in environments where NIS client
  services aren't available.

- Use realloc() instead of malloc() in copy_yp_pass() and copy_local_pass().

- Fix silly bug in copy_yp_pass(); some of the members of the passwd
  structure weren't being filled in correctly. (This went unnoticed
  for a while since the old yppasswdd didn't allow changes to the
  fields that were being botched.)

- chpass(1) now also allows the superuser on the NIS master server to
  make unrestricted changes to any user's NIS password information.

- Use UNIX domain comm channel to rpc.yppasswdd(8) when run by the
  superuser on the NIS master. This allows several new things:

   o superuser can update an entire master.passwd.{byname,byuid} entry
   o superuser can update records in arbitrary domains using -d flag to
     select a domain (before you could only change the default domain)
   o superuser can _add_ records to the NIS master.passwd maps, provided
     rpc.yppasswdd(8) has been started with the -a flag (to do this,
     the superuser must force NIS operation by specifying the -y flag
     to chpass(1) along with -a, i.e. 'chpass -y -a 'foo:::::::::')

- Back out the 'chpass -a <new password entry> breaks with NIS' fix
  from the last revision and fix it properly this time. The previous
  revision fixed the immediate problem but broke NIS operation in
  some cases.

- In edit.c, be a little more reasonable about deciding when to
  prevent the shell field from being changed.

  Submitted by Charles Owens <owensc@enc.edu>, who said:

  "I made a minor (one-line) modification to chpass, with regards
   to whether or not it allows the changing of shells.  In the 2.0.5 code,
   field changing follows the settings specified in the "list" structure
   defined in table.c .  For the shell, though, this is ignored.  A quick
   look in edit.c showed me why, but I don't understand why it was written as
   such.  The logic was

        if shell is standard shell, allow changing

   I changed it to

        if shell changing is allowed (per table.c) and it is a standard shell
             OR if uid=0, then allow changing."

   Makes sense to me.

- Update man page.

1 files changed, 34 insertions, 3 deletions

diff --git a/chpass/Makefile b/chpass/Makefile
index a1e2947..0f582b9 100644
--- a/chpass/Makefile
+++ b/chpass/Makefile
@@ -4,7 +4,9 @@ PROG=	chpass
 SRCS=	chpass.c edit.c field.c pw_copy.c pw_scan.c pw_util.c table.c util.c
 BINOWN=	root
 BINMODE=4555
-.PATH:	${.CURDIR}/../../usr.sbin/pwd_mkdb ${.CURDIR}/../../usr.sbin/vipw
+.PATH:	${.CURDIR}/../../usr.sbin/pwd_mkdb ${.CURDIR}/../../usr.sbin/vipw \
+	${.CURDIR}/../../libexec/ypxfr \
+	${.CURDIR}/../../usr.sbin/rpc.yppasswdd
 CFLAGS+=-I${.CURDIR}/../../usr.sbin/pwd_mkdb -I${.CURDIR}/../../usr.sbin/vipw
 LINKS=	${BINDIR}/chpass ${BINDIR}/chfn
 LINKS+=	${BINDIR}/chpass ${BINDIR}/chsh
@@ -12,11 +14,40 @@ LINKS+=	${BINDIR}/chpass ${BINDIR}/ypchpass
 LINKS+=	${BINDIR}/chpass ${BINDIR}/ypchfn
 LINKS+=	${BINDIR}/chpass ${BINDIR}/ypchsh
 MLINKS=	chpass.1 chfn.1 chpass.1 chsh.1
-COPTS+=	-DYP
-SRCS+=	pw_yp.c
+COPTS+=	-DYP -I. -I${.CURDIR}/../../libexec/ypxfr \
+	-I${.CURDIR}/../../usr.sbin/rpc.yppasswdd -Dyp_error=warnx
+
+SRCS+=	yppasswd_private_xdr.c yppasswd_comm.c yp_clnt.c \
+	yppasswd_clnt.c pw_yp.c ypxfr_misc.c
+CLEANFILES= yp_clnt.c yp.h yppasswd_clnt.c yppasswd.h \
+	    yppasswd_private_xdr.c yppasswd_private.h
+
 DPADD=	${LIBRPCSVC} ${LIBCRYPT}
 LDADD+=	-lrpcsvc -lcrypt
 
+RPCGEN= rpcgen -C
+RPCSRC= ${DESTDIR}/usr/include/rpcsvc/yp.x
+RPCSRC_PW= ${DESTDIR}/usr/include/rpcsvc/yppasswd.x
+RPCSRC_PRIV= ${.CURDIR}/../../usr.sbin/rpc.yppasswdd/yppasswd_private.x
+
+yp.h: ${RPCSRC}
+	${RPCGEN} -h -o ${.TARGET} ${RPCSRC}
+
+yp_clnt.c: ${RPCSRC} yp.h
+	${RPCGEN} -l -o ${.TARGET} ${RPCSRC}
+
+yppasswd.h: ${RPCSRC_PW}
+	${RPCGEN} -h -o ${.TARGET} ${RPCSRC_PW}
+
+yppasswd_clnt.c: ${RPCSRC_PW} yppasswd.h
+	${RPCGEN} -l -o ${.TARGET} ${RPCSRC_PW}
+
+yppasswd_private.h: ${RPCSRC_PRIV}
+	${RPCGEN} -h -o ${.TARGET} ${RPCSRC_PRIV}
+
+yppasswd_private_xdr.c: ${RPCSRC_PRIV} yppasswd_private.h
+	${RPCGEN} -c -o ${.TARGET} ${RPCSRC_PRIV}
+
 beforeinstall:
 	[ ! -e ${DESTDIR}${BINDIR}/chpass ] || \
 		chflags noschg ${DESTDIR}${BINDIR}/chpass