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.
This commit is contained in:
Bill Paul
parent
41955e9114
commit
c2dfe9fe01
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=14212
@ -4,7 +4,9 @@ PROG= chpass
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SRCS= chpass.c edit.c field.c pw_copy.c pw_scan.c pw_util.c table.c util.c
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BINOWN= root
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BINMODE=4555
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.PATH: ${.CURDIR}/../../usr.sbin/pwd_mkdb ${.CURDIR}/../../usr.sbin/vipw
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.PATH: ${.CURDIR}/../../usr.sbin/pwd_mkdb ${.CURDIR}/../../usr.sbin/vipw \
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${.CURDIR}/../../libexec/ypxfr \
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${.CURDIR}/../../usr.sbin/rpc.yppasswdd
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CFLAGS+=-I${.CURDIR}/../../usr.sbin/pwd_mkdb -I${.CURDIR}/../../usr.sbin/vipw
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LINKS= ${BINDIR}/chpass ${BINDIR}/chfn
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LINKS+= ${BINDIR}/chpass ${BINDIR}/chsh
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@ -12,11 +14,40 @@ LINKS+= ${BINDIR}/chpass ${BINDIR}/ypchpass
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LINKS+= ${BINDIR}/chpass ${BINDIR}/ypchfn
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LINKS+= ${BINDIR}/chpass ${BINDIR}/ypchsh
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MLINKS= chpass.1 chfn.1 chpass.1 chsh.1
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COPTS+= -DYP
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SRCS+= pw_yp.c
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COPTS+= -DYP -I. -I${.CURDIR}/../../libexec/ypxfr \
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-I${.CURDIR}/../../usr.sbin/rpc.yppasswdd -Dyp_error=warnx
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SRCS+= yppasswd_private_xdr.c yppasswd_comm.c yp_clnt.c \
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yppasswd_clnt.c pw_yp.c ypxfr_misc.c
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CLEANFILES= yp_clnt.c yp.h yppasswd_clnt.c yppasswd.h \
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yppasswd_private_xdr.c yppasswd_private.h
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DPADD= ${LIBRPCSVC} ${LIBCRYPT}
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LDADD+= -lrpcsvc -lcrypt
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RPCGEN= rpcgen -C
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RPCSRC= ${DESTDIR}/usr/include/rpcsvc/yp.x
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RPCSRC_PW= ${DESTDIR}/usr/include/rpcsvc/yppasswd.x
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RPCSRC_PRIV= ${.CURDIR}/../../usr.sbin/rpc.yppasswdd/yppasswd_private.x
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yp.h: ${RPCSRC}
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${RPCGEN} -h -o ${.TARGET} ${RPCSRC}
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yp_clnt.c: ${RPCSRC} yp.h
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${RPCGEN} -l -o ${.TARGET} ${RPCSRC}
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yppasswd.h: ${RPCSRC_PW}
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${RPCGEN} -h -o ${.TARGET} ${RPCSRC_PW}
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yppasswd_clnt.c: ${RPCSRC_PW} yppasswd.h
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${RPCGEN} -l -o ${.TARGET} ${RPCSRC_PW}
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yppasswd_private.h: ${RPCSRC_PRIV}
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${RPCGEN} -h -o ${.TARGET} ${RPCSRC_PRIV}
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yppasswd_private_xdr.c: ${RPCSRC_PRIV} yppasswd_private.h
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${RPCGEN} -c -o ${.TARGET} ${RPCSRC_PRIV}
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beforeinstall:
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[ ! -e ${DESTDIR}${BINDIR}/chpass ] || \
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chflags noschg ${DESTDIR}${BINDIR}/chpass
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@ -212,39 +212,64 @@ apply.
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Currently,
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.Nm chpass
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can only make changes to the NIS passwd maps through
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.Xr yppasswdd 8 ,
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which only permits changes to a user's password, shell and gecos
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fields. It can not be used to change other user information or to
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add new records to the NIS passwd maps. (Doing that would require
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something such as ypupdated, which is not yet supported.)
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.Xr rpc.yppasswdd 8 ,
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which normally only permits changes to a user's password, shell and GECOS
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fields. Except when invoked by the super-user on the NIS master server,
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.Nm chpass
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(and, similarly,
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.Xr passwd 1 )
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can not use the
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.Xr rpc.yppasswdd 8
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server to change other user information or
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add new records to the NIS passwd maps.
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Furthermore,
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.Xr yppasswdd 8
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.Xr rpc.yppasswdd 8
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requires password authentication before it will make any
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changes, even if it receives a request from the super-user.
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changes. The only user allowed to submit changes without supplying
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a password is the super-user on the NIS master server; all other users,
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including those with root privileges on NIS clients (and NIS slave
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servers) must enter a password.
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(The super-user on the NIS master is allowed to bypass these restrictions
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largely for convenience: a user with root access
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to the NIS master server already has the privileges required to make
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updates to the NIS maps, but editing the map source files by hand can
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be cumbersome.
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.Pp
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As a result, the following restrictions apply when
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Note: these exceptions only apply when the NIS master server is a
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FreeBSD system.)
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.Pp
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Consequently, except where noted, the following restrictions apply when
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.Nm chpass
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is used with NIS:
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.Bl -enum -offset indent
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.It
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.Pa Only the shell and gecos information may be changed.
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.Pa Only the shell and GECOS information may be changed.
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All other
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fields are restricted, even when
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.Nm chpass
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is invoked by the super-user, because the
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.Xr yppasswdd 8
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daemon has no support for updating them. While support for
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is invoked by the super-user.
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While support for
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changing other fields could be added, this would lead to
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compatibility problems with other NIS-capable systems.
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Even though the super-user may supply data for other fields
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while editing an entry, the extra information (other than the
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password -- see below) will be silently discarded.
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.Pp
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Exception: the super-user on the NIS master server is permitted to
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change any field.
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.Pp
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.It
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.Pa Password authentication is required.
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.Nm Chpass
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will prompt for the user's NIS password before effecting
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any changes. If the password is invalid, all changes will be
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discarded.
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.Pp
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Exception: the super-user on the NIS master server is allowed to
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submit changes without supplying a password. (The super-user may
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choose to turn off this feature using the
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.Fl o
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flag, described below.)
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.It
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.Pa Adding new records to the local
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.Pa password database is discouraged.
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@ -257,6 +282,18 @@ The administrator should use
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.Xr vipw 8
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to modify the local password
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file when NIS is running.
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.Pp
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The super-user on the NIS master server is permitted to add new records
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to the NIS password maps, provided the
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.Xr rpc.yppasswdd 8
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server has been started with the
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.Fl a
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flag to permitted additions (it refuses them by default).
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.Nm Chpass
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tries to update the local password database by default; to update the
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NIS maps instead, invoke chpass with the
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.Fl y
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flag.
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.It
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.Pa Password changes are not permitted.
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Users should use
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@ -268,11 +305,15 @@ a new password (even though the ``Password:'' field does not show
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up in the editor template, the super-user may add it back by hand),
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but even the super-user must supply the user's original password
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otherwise
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.Xr yppasswdd 8
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.Xr rpc.yppasswdd 8
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will refuse to update the NIS maps.
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.Pp
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Exception: the super-user on the NIS master server is permitted to
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change a user's NIS password with
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.Nm chpass .
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.El
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.Pp
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There are also two extra option flags that are available when
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There are also a few extra option flags that are available when
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.Nm chpass
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is compiled with NIS support:
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.Bl -tag -width flag
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@ -290,6 +331,50 @@ This flag has the opposite effect of
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This flag is largely redundant since
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.Nm chpass
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operates on NIS entries by default if NIS is enabled.
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.It Fl d Ar domain
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Specify a particular NIS domain.
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.Nm Chpass
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uses the system domain name by default, as set by the
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.Xr domainname 1
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command. The
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.Fl d
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option can be used to override a default, or to specify a domain
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when the system domain name is not set.
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.It Fl h Ar host
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Specify the name or address of an NIS server to query. Normally,
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.Nm chpass
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will communicate with the NIS master host specified in the
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.Pa master.passwd
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or
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.Pa passwd
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maps. On hosts that have not been configured as NIS clients, there is
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no way for the program to determine this information unless the user
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provides the hostname of a server. Note that the specified hostname need
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not be that of the NIS master server; the name of any server, master or
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slave, in a given NIS domain will do.
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.Pp
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When using the
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.Fl d
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option, the hostname defaults to ``localhost.'' The
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.Fl h
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option can be used in conjunction with the
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.Fl d
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option, in which case the user-specified hostname will override
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the default.
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.Pp
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.It Fl o
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Force the use of RPC-based updates when communicating with
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.Xr rpc.yppasswdd 8
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(``old-mode'').
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When invoked by the super-user on the NIS master server,
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.Nm chpass
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allows unrestricted changes to the NIS passwd maps using dedicated,
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non-RPC-based mechanism (in this case, a UNIX domain socket). The
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.Fl o
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flag can be used to force
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.Nm chpass
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to use the standard update mechanism instead. This option is provided
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mainly for testing purposes.
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.El
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.Pp
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.Sh FILES
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@ -40,7 +40,7 @@ static char copyright[] =
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#ifndef lint
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static char sccsid[] = "From: @(#)chpass.c 8.4 (Berkeley) 4/2/94";
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static char rcsid[] =
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"$Id: chpass.c,v 1.5 1995/09/02 03:56:17 wpaul Exp $";
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"$Id: chpass.c,v 1.5 1996/02/23 14:33:05 wpaul Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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@ -63,13 +63,14 @@ static char rcsid[] =
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#include <pw_util.h>
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#include "pw_copy.h"
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#ifdef YP
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#include <rpcsvc/yp.h>
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int yp_errno = YP_TRUE;
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#include "pw_yp.h"
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#endif
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#include "chpass.h"
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#include "pathnames.h"
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char *progname = "chpass";
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char *tempname;
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uid_t uid;
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@ -92,7 +93,7 @@ main(argc, argv)
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op = EDITENTRY;
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#ifdef YP
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while ((ch = getopt(argc, argv, "a:p:s:ly")) != EOF)
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while ((ch = getopt(argc, argv, "a:p:s:d:h:oly")) != EOF)
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#else
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while ((ch = getopt(argc, argv, "a:p:s:")) != EOF)
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#endif
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@ -110,11 +111,42 @@ main(argc, argv)
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arg = optarg;
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break;
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#ifdef YP
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case 'h':
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#ifdef PARAMOID
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if (getuid()) {
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warnx("Only the superuser can use the -d flag");
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} else {
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#endif
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yp_server = optarg;
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#ifdef PARANOID
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}
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#endif
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break;
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case 'd':
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#ifdef PARANOID
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if (getuid()) {
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warnx("Only the superuser can use the -d flag");
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} else {
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#endif
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yp_domain = optarg;
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if (yp_server == NULL)
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yp_server = "localhost";
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#ifdef PARANOID
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}
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#endif
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break;
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case 'l':
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force_local = 1;
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if (getuid()) {
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warnx("Only the superuser can use the -h flag");
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} else {
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force_local = 1;
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}
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break;
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case 'y':
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force_yp = 1;
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_use_yp = force_yp = 1;
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break;
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case 'o':
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force_old++;
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break;
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#endif
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case '?':
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@ -128,6 +160,15 @@ main(argc, argv)
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if (op == EDITENTRY || op == NEWSH || op == NEWPW)
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switch(argc) {
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#ifdef YP
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case 0:
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GETPWUID(uid)
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get_yp_master(1); /* XXX just to set the suser flag */
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break;
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case 1:
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GETPWNAM(*argv)
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get_yp_master(1); /* XXX just to set the suser flag */
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#else
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case 0:
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if (!(pw = getpwuid(uid)))
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errx(1, "unknown user: uid %u", uid);
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@ -135,39 +176,13 @@ main(argc, argv)
|
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case 1:
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if (!(pw = getpwnam(*argv)))
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errx(1, "unknown user: %s", *argv);
|
||||
#endif
|
||||
if (uid && uid != pw->pw_uid)
|
||||
baduser();
|
||||
break;
|
||||
default:
|
||||
usage();
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||||
}
|
||||
|
||||
#ifdef YP
|
||||
pw->pw_name = strdup(pw->pw_name);
|
||||
_use_yp = use_yp(pw->pw_name);
|
||||
if (_use_yp == USER_YP_ONLY) {
|
||||
if (!force_local) {
|
||||
_use_yp = 1;
|
||||
pw = (struct passwd *)&yp_password;
|
||||
} else
|
||||
errx(1, "unknown local user: %s.", pw->pw_name);
|
||||
} else if (_use_yp == USER_LOCAL_ONLY) {
|
||||
if (!force_yp) {
|
||||
_use_yp = 0;
|
||||
pw = (struct passwd *)&local_password;
|
||||
} else
|
||||
errx(1, "unknown NIS user: %s.", pw->pw_name);
|
||||
} else if (_use_yp == USER_YP_AND_LOCAL) {
|
||||
if (!force_local) {
|
||||
_use_yp = 1;
|
||||
pw = (struct passwd *)&yp_password;
|
||||
} else {
|
||||
_use_yp = 0;
|
||||
pw = (struct passwd *)&local_password;
|
||||
}
|
||||
}
|
||||
#endif /* YP */
|
||||
|
||||
if (op == NEWSH) {
|
||||
/* protect p_shell -- it thinks NULL is /bin/sh */
|
||||
if (!arg[0])
|
||||
@ -258,7 +273,7 @@ usage()
|
||||
|
||||
(void)fprintf(stderr,
|
||||
#ifdef YP
|
||||
"usage: chpass [-l] [-y] [-a list] [-p encpass] [-s shell] [user]\n");
|
||||
"usage: chpass [-l] [-y] [-d domain [-h host]] [-a list] [-p encpass] [-s shell] [user]\n");
|
||||
#else
|
||||
"usage: chpass [-a list] [-p encpass] [-s shell] [user]\n");
|
||||
#endif
|
||||
|
||||
@ -99,7 +99,7 @@ display(fd, pw)
|
||||
(void)fprintf(fp,
|
||||
#ifdef YP
|
||||
"#Changing %s information for %s.\n", _use_yp ? "NIS" : "user database", pw->pw_name);
|
||||
if (!uid && !_use_yp) {
|
||||
if (!uid && (!_use_yp || suser_override)) {
|
||||
#else
|
||||
"#Changing user database information for %s.\n", pw->pw_name)
|
||||
if (!uid) {
|
||||
@ -118,11 +118,19 @@ display(fd, pw)
|
||||
*pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
|
||||
}
|
||||
/* Only admin can change "restricted" shells. */
|
||||
#ifdef 0
|
||||
else if (ok_shell(pw->pw_shell))
|
||||
/*
|
||||
* Make shell a restricted field. Ugly with a
|
||||
* necklace, but there's not much else to do.
|
||||
*/
|
||||
#else
|
||||
else if ((!list[E_SHELL].restricted && ok_shell(pw->pw_shell)) || !uid)
|
||||
/*
|
||||
* If change not restrict (table.c) and standard shell
|
||||
* OR if root, then allow editing of shell.
|
||||
*/
|
||||
#endif
|
||||
(void)fprintf(fp, "Shell: %s\n",
|
||||
*pw->pw_shell ? pw->pw_shell : _PATH_BSHELL);
|
||||
else
|
||||
|
||||
@ -20,7 +20,7 @@
|
||||
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul 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)
|
||||
@ -35,7 +35,7 @@
|
||||
* Center for Telecommunications Research
|
||||
* Columbia University, New York City
|
||||
*
|
||||
* $Id: pw_yp.c,v 1.1 1995/08/13 16:12:27 wpaul Exp $
|
||||
* $Id: pw_yp.c,v 1.9 1996/02/23 04:20:19 wpaul Exp $
|
||||
*/
|
||||
|
||||
#ifdef YP
|
||||
@ -45,6 +45,7 @@
|
||||
#include <netdb.h>
|
||||
#include <time.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <pwd.h>
|
||||
#include <errno.h>
|
||||
#include <err.h>
|
||||
@ -57,14 +58,18 @@
|
||||
#include <sys/param.h>
|
||||
#include <limits.h>
|
||||
#include <rpc/rpc.h>
|
||||
#include <rpcsvc/yp_prot.h>
|
||||
#include <rpcsvc/yp.h>
|
||||
struct dom_binding {};
|
||||
#include <rpcsvc/ypclnt.h>
|
||||
#include <rpcsvc/yppasswd.h>
|
||||
#include <pw_util.h>
|
||||
#include "pw_yp.h"
|
||||
#include "ypxfr_extern.h"
|
||||
#include "yppasswd_comm.h"
|
||||
#include "yppasswd_private.h"
|
||||
|
||||
#define PERM_SECURE (S_IRUSR|S_IWUSR)
|
||||
HASHINFO openinfo = {
|
||||
static HASHINFO openinfo = {
|
||||
4096, /* bsize */
|
||||
32, /* ffactor */
|
||||
256, /* nelem */
|
||||
@ -73,22 +78,29 @@ HASHINFO openinfo = {
|
||||
0, /* lorder */
|
||||
};
|
||||
|
||||
int force_old = 0;
|
||||
int _use_yp = 0;
|
||||
int suser_override = 0;
|
||||
char *yp_domain = NULL;
|
||||
char *yp_server = NULL;
|
||||
|
||||
extern char *tempname;
|
||||
|
||||
/* Save the local and NIS password information */
|
||||
struct passwd local_password;
|
||||
struct passwd yp_password;
|
||||
|
||||
|
||||
void copy_yp_pass(p, x, m)
|
||||
char *p;
|
||||
int x, m;
|
||||
{
|
||||
register char *t, *s = p;
|
||||
static char *buf;
|
||||
|
||||
yp_password.pw_fields = 0;
|
||||
|
||||
t = (char *)malloc(m + 10);
|
||||
buf = (char *)realloc(buf, m + 10);
|
||||
bzero(buf, m + 10);
|
||||
|
||||
/* Turn all colons into NULLs */
|
||||
while (strchr(s, ':')) {
|
||||
@ -96,7 +108,8 @@ int x, m;
|
||||
*(s - 1)= '\0';
|
||||
}
|
||||
|
||||
#define EXPAND(e) e = t; while (*t++ = *p++);
|
||||
t = buf;
|
||||
#define EXPAND(e) e = t; while ((*t++ = *p++));
|
||||
EXPAND(yp_password.pw_name);
|
||||
yp_password.pw_fields |= _PWF_NAME;
|
||||
EXPAND(yp_password.pw_passwd);
|
||||
@ -115,7 +128,7 @@ int x, m;
|
||||
yp_password.pw_fields |= _PWF_CHANGE;
|
||||
yp_password.pw_expire = atol(p);
|
||||
p += (strlen(p) + 1);
|
||||
yp_password.pw_expire |= _PWF_EXPIRE;
|
||||
yp_password.pw_fields |= _PWF_EXPIRE;
|
||||
}
|
||||
EXPAND(yp_password.pw_gecos);
|
||||
yp_password.pw_fields |= _PWF_GECOS;
|
||||
@ -132,9 +145,12 @@ char *p;
|
||||
int m;
|
||||
{
|
||||
register char *t;
|
||||
static char *buf;
|
||||
|
||||
t = (char *)malloc(m + 10);
|
||||
buf = (char *)realloc(buf, m + 10);
|
||||
bzero(buf, m + 10);
|
||||
|
||||
t = buf;
|
||||
EXPAND(local_password.pw_name);
|
||||
EXPAND(local_password.pw_passwd);
|
||||
bcopy(p, (char *)&local_password.pw_uid, sizeof(int));
|
||||
@ -155,61 +171,142 @@ int m;
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* It is not mandatory that an NIS master server also be a client.
|
||||
* However, if the NIS master is not configured as a client, then the
|
||||
* domain name will not be set and ypbind will not be running, so we
|
||||
* will be unable to use the ypclnt routines inside libc. We therefore
|
||||
* need our own magic version of yp_match() which we can use in any
|
||||
* environment.
|
||||
*/
|
||||
static int my_yp_match(server, domain, map, key, keylen, result, resultlen)
|
||||
char *server;
|
||||
char *domain;
|
||||
char *map;
|
||||
char *key;
|
||||
unsigned long keylen;
|
||||
char **result;
|
||||
unsigned long *resultlen;
|
||||
{
|
||||
ypreq_key ypkey;
|
||||
ypresp_val *ypval;
|
||||
CLIENT *clnt;
|
||||
static char buf[YPMAXRECORD + 2];
|
||||
|
||||
bzero((char *)buf, sizeof(buf));
|
||||
|
||||
if ((clnt = clnt_create(server, YPPROG,YPVERS,"udp")) == NULL) {
|
||||
warnx("%s", clnt_spcreateerror("failed to create handle"));
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
ypkey.domain = domain;
|
||||
ypkey.map = map;
|
||||
ypkey.key.keydat_len = keylen;
|
||||
ypkey.key.keydat_val = key;
|
||||
|
||||
if ((ypval = ypproc_match_2(&ypkey, clnt)) == NULL) {
|
||||
clnt_destroy(clnt);
|
||||
warnx("%s",clnt_sperror(clnt,"YPPROC_MATCH failed"));
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
clnt_destroy(clnt);
|
||||
|
||||
if (ypval->stat != YP_TRUE) {
|
||||
int stat = ypval->stat;
|
||||
xdr_free(xdr_ypresp_val, (char *)ypval);
|
||||
if (stat == YP_NOMAP && strstr(map, "master.passwd"))
|
||||
return(1);
|
||||
if (stat == YP_NOKEY)
|
||||
return(1);
|
||||
warnx("ypmatch failed: %s", yperr_string(ypprot_err(stat)));
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
|
||||
strncpy((char *)&buf, ypval->val.valdat_val, ypval->val.valdat_len);
|
||||
|
||||
*result = (char *)&buf;
|
||||
*resultlen = ypval->val.valdat_len;
|
||||
|
||||
xdr_free(xdr_ypresp_val, (char *)ypval);
|
||||
|
||||
return(0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if the user we're working with is local or in NIS.
|
||||
*/
|
||||
int use_yp (user)
|
||||
char *user;
|
||||
int use_yp (user, uid, which)
|
||||
char *user;
|
||||
uid_t uid;
|
||||
int which; /* 0 = use username, 1 = use uid */
|
||||
{
|
||||
int user_local = 0, user_yp = 0, user_exists = 0;
|
||||
DB *dbp;
|
||||
DBT key,data;
|
||||
char bf[UT_NAMESIZE + 2];
|
||||
char *domain;
|
||||
char *result;
|
||||
int resultlen, rval;
|
||||
char *server;
|
||||
int resultlen;
|
||||
char ubuf[UT_NAMESIZE + 2];
|
||||
|
||||
if (which) {
|
||||
snprintf(ubuf, sizeof(ubuf), "%lu", uid);
|
||||
user = (char *)&ubuf;
|
||||
}
|
||||
|
||||
/* Is the user anywhere */
|
||||
if (getpwnam(user) != NULL)
|
||||
user_exists = 1;
|
||||
/* Grope around for the user in the usual way */
|
||||
if (which) {
|
||||
if (getpwuid(uid) != NULL)
|
||||
user_exists = 1;
|
||||
} else {
|
||||
if (getpwnam(user) != NULL)
|
||||
user_exists = 1;
|
||||
}
|
||||
|
||||
/* Now grope directly through the user database */
|
||||
if ((dbp = dbopen(_PATH_SMP_DB, O_RDONLY, PERM_SECURE,
|
||||
DB_HASH, &openinfo)) == NULL)
|
||||
errx(1, "error opening database: %s.", _PATH_MP_DB);
|
||||
DB_HASH, &openinfo)) == NULL) {
|
||||
warn("error opening database: %s.", _PATH_MP_DB);
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
/* Is NIS turned on */
|
||||
bf[0] = _PW_KEYYPENABLED;
|
||||
key.data = (u_char *)bf;
|
||||
key.size = 1;
|
||||
if (!(dbp->get)(dbp,&key,&data,0)) {
|
||||
if ((rval = yp_get_default_domain(&domain))) {
|
||||
warnx("can't get local NIS domain name: %s",yperr_string(rval));
|
||||
pw_error(NULL, 0, 1);
|
||||
}
|
||||
if (!(dbp->get)(dbp,&key,&data,0) || (yp_domain && yp_server)) {
|
||||
server = get_yp_master(0);
|
||||
|
||||
/* Is the user in the NIS passwd map */
|
||||
if (!yp_match(domain, "passwd.byname", user, strlen(user),
|
||||
if (!my_yp_match(server, yp_domain, which ? "passwd.byuid" :
|
||||
"passwd.byname", user, strlen(user),
|
||||
&result, &resultlen)) {
|
||||
user_yp = 1;
|
||||
user_yp = user_exists = 1;
|
||||
*(char *)(result + resultlen) = '\0';
|
||||
copy_yp_pass(result, 0, resultlen);
|
||||
free(result);
|
||||
}
|
||||
/* Is the user in the NIS passwd map */
|
||||
if (user_yp && !yp_match(domain, "master.passwd.byname",
|
||||
/* Is the user in the NIS master.passwd map */
|
||||
if (user_yp && !my_yp_match(server, yp_domain, which ?
|
||||
"master.passwd.byuid" : "master.passwd.byname",
|
||||
user, strlen(user),
|
||||
&result, &resultlen)) {
|
||||
*(char *)(result + resultlen) = '\0';
|
||||
copy_yp_pass(result, 1, resultlen);
|
||||
}
|
||||
free(result);
|
||||
}
|
||||
|
||||
/* Is the user in the local password database */
|
||||
|
||||
bf[0] = _PW_KEYBYNAME;
|
||||
bcopy((char *)user, bf + 1, MIN(strlen(user), UT_NAMESIZE));
|
||||
bf[0] = which ? _PW_KEYBYUID : _PW_KEYBYNAME;
|
||||
if (which)
|
||||
bcopy((char *)&uid, bf + 1, sizeof(uid));
|
||||
else
|
||||
bcopy((char *)user, bf + 1, MIN(strlen(user), UT_NAMESIZE));
|
||||
key.data = (u_char *)bf;
|
||||
key.size = strlen(user) + 1;
|
||||
key.size = which ? sizeof(uid) + 1 : strlen(user) + 1;
|
||||
if (!(dbp->get)(dbp,&key,&data,0)) {
|
||||
user_local = 1;
|
||||
copy_local_pass(data.data, data.size);
|
||||
@ -232,31 +329,37 @@ char *user;
|
||||
* Find the name of the NIS master server for this domain
|
||||
* and make sure it's running yppasswdd.
|
||||
*/
|
||||
static char *get_yp_master(void)
|
||||
char *get_yp_master(getserver)
|
||||
int getserver;
|
||||
{
|
||||
char *domain, *mastername;
|
||||
int rval;
|
||||
char *mastername;
|
||||
int rval, localport;
|
||||
struct stat st;
|
||||
|
||||
/* Get default NIS domain. */
|
||||
|
||||
if ((rval = yp_get_default_domain(&domain))) {
|
||||
if (yp_domain == NULL && (rval = yp_get_default_domain(&yp_domain))) {
|
||||
warnx("can't get local NIS domain name: %s",yperr_string(rval));
|
||||
pw_error(NULL, 0, 1);
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
/* Get master server of passwd map. */
|
||||
|
||||
if ((rval = yp_master(domain, "passwd.byname", &mastername))) {
|
||||
warnx("can't get master NIS server: %s", yperr_string(rval));
|
||||
pw_error(NULL, 0, 1);
|
||||
if ((mastername = ypxfr_get_master(yp_domain, "passwd.byname",
|
||||
yp_server, yp_server ? 0 : 1)) == NULL) {
|
||||
warnx("can't get name of master NIS server");
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
if (!getserver)
|
||||
return(mastername);
|
||||
|
||||
/* Check if yppasswdd is out there. */
|
||||
|
||||
if ((rval = getrpcport(mastername, YPPASSWDPROG, YPPASSWDPROC_UPDATE,
|
||||
IPPROTO_UDP)) == 0) {
|
||||
warnx("yppasswdd not running on NIS master server");
|
||||
pw_error(NULL, 0, 1);
|
||||
warnx("rpc.yppasswdd is not running on the NIS master server");
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -265,91 +368,136 @@ static char *get_yp_master(void)
|
||||
*/
|
||||
|
||||
if (rval >= IPPORT_RESERVED) {
|
||||
warnx("yppasswdd server not running on reserved port");
|
||||
pw_error(NULL, 0, 1);
|
||||
warnx("rpc.yppasswdd server not running on reserved port");
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
/* See if _we_ are the master server. */
|
||||
if (!force_old && !getuid() && (localport = getrpcport("localhost",
|
||||
YPPASSWDPROG, YPPASSWDPROC_UPDATE, IPPROTO_UDP)) != 0) {
|
||||
if (localport == rval && stat(sockname, &st) != -1) {
|
||||
suser_override = 1;
|
||||
mastername = "localhost";
|
||||
}
|
||||
}
|
||||
|
||||
/* Everything checks out: return the name of the server. */
|
||||
|
||||
return (mastername);
|
||||
}
|
||||
|
||||
/*
|
||||
* Ask the user for his NIS password and submit the new information
|
||||
* to yppasswdd. Note that yppasswdd requires password authentication
|
||||
* to yppasswdd. Note that rpc.yppasswdd requires password authentication
|
||||
* and only allows changes to existing records rather than the addition
|
||||
* of new records. (To do actual updates we would need something like
|
||||
* secure RPC and ypupdated, which FreeBSD doesn't have yet.) This means
|
||||
* that the superuser cannot use chpass(1) to add new users records to
|
||||
* the NIS password database.
|
||||
* secure RPC and ypupdated, which FreeBSD doesn't have yet.) The FreeBSD
|
||||
* rpc.yppasswdd has some special hooks to allow the superuser update
|
||||
* information without specifying a password, however this only works
|
||||
* for the superuser on the NIS master server.
|
||||
*/
|
||||
void yp_submit(pw)
|
||||
struct passwd *pw;
|
||||
struct passwd *pw;
|
||||
{
|
||||
struct yppasswd yppasswd;
|
||||
struct master_yppasswd master_yppasswd;
|
||||
CLIENT *clnt;
|
||||
char *master, *password, *encpass;
|
||||
int rval, status = 0;
|
||||
struct timeval tv;
|
||||
char *master, *password;
|
||||
int *status = NULL;
|
||||
struct rpc_err err;
|
||||
|
||||
/* Populate the yppasswd structure that gets handed to yppasswdd. */
|
||||
/*
|
||||
* XXX This is done first to work around what looks like a very
|
||||
* strange memory corruption bug: the text fields pointed to
|
||||
* by the members of the 'pw' structure appear to be clobbered
|
||||
* after get_yp_master() returns (in particular, it happens
|
||||
* during getrpcport()). I don't know exactly where the problem
|
||||
* lies: I traced it all the way to gethostbyname(), then gave
|
||||
* up.
|
||||
*/
|
||||
yppasswd.newpw.pw_passwd = strdup(pw->pw_passwd);
|
||||
yppasswd.newpw.pw_name = strdup(pw->pw_name);
|
||||
yppasswd.newpw.pw_uid = pw->pw_uid;
|
||||
yppasswd.newpw.pw_gid = pw->pw_gid;
|
||||
yppasswd.newpw.pw_gecos = strdup(pw->pw_gecos);
|
||||
yppasswd.newpw.pw_dir = strdup(pw->pw_dir);
|
||||
yppasswd.newpw.pw_shell = strdup(pw->pw_shell);
|
||||
_use_yp = 1;
|
||||
|
||||
/* Get NIS master server name */
|
||||
|
||||
master = get_yp_master();
|
||||
master = get_yp_master(1);
|
||||
|
||||
/* Populate the yppasswd structure that gets handed to yppasswdd. */
|
||||
|
||||
if (suser_override) {
|
||||
master_yppasswd.newpw.pw_passwd = strdup(pw->pw_passwd);
|
||||
master_yppasswd.newpw.pw_name = strdup(pw->pw_name);
|
||||
master_yppasswd.newpw.pw_uid = pw->pw_uid;
|
||||
master_yppasswd.newpw.pw_gid = pw->pw_gid;
|
||||
master_yppasswd.newpw.pw_expire = pw->pw_expire;
|
||||
master_yppasswd.newpw.pw_change = pw->pw_change;
|
||||
master_yppasswd.newpw.pw_fields = pw->pw_fields;
|
||||
master_yppasswd.newpw.pw_gecos = strdup(pw->pw_gecos);
|
||||
master_yppasswd.newpw.pw_dir = strdup(pw->pw_dir);
|
||||
master_yppasswd.newpw.pw_shell = strdup(pw->pw_shell);
|
||||
master_yppasswd.newpw.pw_class = strdup(pw->pw_class);
|
||||
master_yppasswd.oldpass = ""; /* not really needed */
|
||||
master_yppasswd.domain = yp_domain;
|
||||
} else {
|
||||
yppasswd.newpw.pw_passwd = strdup(pw->pw_passwd);
|
||||
yppasswd.newpw.pw_name = strdup(pw->pw_name);
|
||||
yppasswd.newpw.pw_uid = pw->pw_uid;
|
||||
yppasswd.newpw.pw_gid = pw->pw_gid;
|
||||
yppasswd.newpw.pw_gecos = strdup(pw->pw_gecos);
|
||||
yppasswd.newpw.pw_dir = strdup(pw->pw_dir);
|
||||
yppasswd.newpw.pw_shell = strdup(pw->pw_shell);
|
||||
yppasswd.oldpass = "";
|
||||
}
|
||||
|
||||
/* Get the user's password for authentication purposes. */
|
||||
|
||||
printf ("Changing NIS information for %s on %s\n",
|
||||
yppasswd.newpw.pw_name, master);
|
||||
encpass = (getpwnam(yppasswd.newpw.pw_name))->pw_passwd;
|
||||
password = getpass("Please enter password: ");
|
||||
if (strncmp(crypt(password, encpass), encpass, strlen(encpass))) {
|
||||
warnx("Password incorrect.");
|
||||
pw_error(NULL, 0, 1);
|
||||
pw->pw_name, master);
|
||||
|
||||
if (pw->pw_passwd[0] && !suser_override) {
|
||||
password = getpass("Please enter password: ");
|
||||
if (strncmp(crypt(password,pw->pw_passwd),
|
||||
pw->pw_passwd,strlen(pw->pw_passwd))) {
|
||||
warnx("Password incorrect.");
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
yppasswd.oldpass = password; /* XXX */
|
||||
}
|
||||
|
||||
yppasswd.oldpass = password; /* XXX */
|
||||
if (suser_override) {
|
||||
/* Talk to server via AF_UNIX socket. */
|
||||
if (senddat(&master_yppasswd)) {
|
||||
warnx("failed to contact local rpc.yppasswdd");
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
/* Get return code. */
|
||||
status = getresp();
|
||||
} else {
|
||||
/* Create a handle to yppasswdd. */
|
||||
|
||||
/* Create a handle to yppasswdd. */
|
||||
if ((clnt = clnt_create(master, YPPASSWDPROG,
|
||||
YPPASSWDVERS, "udp")) == NULL) {
|
||||
warnx("failed to contact rpc.yppasswdd on %s: %s",
|
||||
master, clnt_spcreateerror(""));
|
||||
pw_error(tempname, 0, 1);
|
||||
}
|
||||
|
||||
clnt = clnt_create(master, YPPASSWDPROG, YPPASSWDVERS, "udp");
|
||||
clnt->cl_auth = authunix_create_default();
|
||||
clnt->cl_auth = authunix_create_default();
|
||||
|
||||
/* Set a timeout and make the RPC call. */
|
||||
status = yppasswdproc_update_1(&yppasswd, clnt);
|
||||
|
||||
tv.tv_sec = 20;
|
||||
tv.tv_usec = 0;
|
||||
rval = clnt_call(clnt, YPPASSWDPROC_UPDATE, xdr_yppasswd,
|
||||
(char *)&yppasswd, xdr_int, (char *)&status, &tv);
|
||||
clnt_geterr(clnt, &err);
|
||||
|
||||
auth_destroy(clnt->cl_auth);
|
||||
clnt_destroy(clnt);
|
||||
}
|
||||
|
||||
/* Call failed: signal the error. */
|
||||
|
||||
if (rval) {
|
||||
warnx("NIS update failed: %s", clnt_sperrno(rval));
|
||||
if ((!suser_override && err.re_status) != RPC_SUCCESS || status == NULL || *status) {
|
||||
warnx("NIS update failed: %s", (err.re_status != RPC_SUCCESS &&
|
||||
!suser_override) ? clnt_sperrno(err.re_status) :
|
||||
"rpc.yppasswdd returned error status");
|
||||
pw_error(NULL, 0, 1);
|
||||
}
|
||||
|
||||
/* Success. */
|
||||
|
||||
auth_destroy(clnt->cl_auth);
|
||||
clnt_destroy(clnt);
|
||||
warnx("NIS information changed on host %s", master);
|
||||
if (suser_override)
|
||||
warnx("NIS information changed on host %s, domain %s",
|
||||
master, yp_domain);
|
||||
else
|
||||
warnx("NIS information changed on host %s", master);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
@ -35,18 +35,91 @@
|
||||
* Center for Telecommunications Research
|
||||
* Columbia University, New York City
|
||||
*
|
||||
* $Id: pw_yp.h,v 1.1 1995/08/13 16:12:28 wpaul Exp $
|
||||
* $Id: pw_yp.h,v 1.8 1996/02/17 18:14:23 wpaul Exp $
|
||||
*/
|
||||
|
||||
#ifdef YP
|
||||
#include <sys/types.h>
|
||||
#include <rpc/rpc.h>
|
||||
#include <rpc/auth.h>
|
||||
#include <rpc/auth_unix.h>
|
||||
/* Four possible return codes from use_yp() */
|
||||
#define USER_UNKNOWN 0
|
||||
#define USER_YP_ONLY 1
|
||||
#define USER_LOCAL_ONLY 2
|
||||
#define USER_YP_AND_LOCAL 3
|
||||
|
||||
extern int force_old;
|
||||
extern int _use_yp;
|
||||
extern int suser_override;
|
||||
extern struct passwd local_password;
|
||||
extern struct passwd yp_password;
|
||||
void yp_submit __P(( struct passwd * ));
|
||||
int use_yp __P(( char * ));
|
||||
extern void copy_yp_pass __P(( char *, int, int ));
|
||||
extern char *yp_domain;
|
||||
extern char *yp_server;
|
||||
extern void yp_submit __P(( struct passwd * ));
|
||||
extern int use_yp __P(( char * , uid_t , int ));
|
||||
extern char *get_yp_master __P(( int ));
|
||||
|
||||
/*
|
||||
* Yucky.
|
||||
*/
|
||||
#define GETPWUID(X) \
|
||||
_use_yp = use_yp(NULL, X, 1); \
|
||||
\
|
||||
if (_use_yp == USER_UNKNOWN) { \
|
||||
errx(1, "unknown user: uid %u", X); \
|
||||
} \
|
||||
\
|
||||
if (_use_yp == USER_YP_ONLY) { \
|
||||
if (!force_local) { \
|
||||
_use_yp = 1; \
|
||||
pw = (struct passwd *)&yp_password; \
|
||||
} else \
|
||||
errx(1, "unknown local user: uid %u", X); \
|
||||
} else if (_use_yp == USER_LOCAL_ONLY) { \
|
||||
if (!force_yp) { \
|
||||
_use_yp = 0; \
|
||||
pw = (struct passwd *)&local_password; \
|
||||
} else \
|
||||
errx(1, "unknown NIS user: uid %u", X); \
|
||||
} else if (_use_yp == USER_YP_AND_LOCAL) { \
|
||||
if (!force_local) { \
|
||||
_use_yp = 1; \
|
||||
pw = (struct passwd *)&yp_password; \
|
||||
} else { \
|
||||
_use_yp = 0; \
|
||||
pw = (struct passwd *)&local_password; \
|
||||
} \
|
||||
}
|
||||
|
||||
#define GETPWNAM(X) \
|
||||
_use_yp = use_yp(X, 0, 0); \
|
||||
\
|
||||
if (_use_yp == USER_UNKNOWN) { \
|
||||
errx(1, "unknown user: %s", X); \
|
||||
} \
|
||||
\
|
||||
if (_use_yp == USER_YP_ONLY) { \
|
||||
if (!force_local) { \
|
||||
_use_yp = 1; \
|
||||
pw = (struct passwd *)&yp_password; \
|
||||
} else \
|
||||
errx(1, "unknown local user: %s.", X); \
|
||||
} else if (_use_yp == USER_LOCAL_ONLY) { \
|
||||
if (!force_yp) { \
|
||||
_use_yp = 0; \
|
||||
pw = (struct passwd *)&local_password; \
|
||||
} else \
|
||||
errx(1, "unknown NIS user: %s.", X); \
|
||||
} else if (_use_yp == USER_YP_AND_LOCAL) { \
|
||||
if (!force_local) { \
|
||||
_use_yp = 1; \
|
||||
pw = (struct passwd *)&yp_password; \
|
||||
} else { \
|
||||
_use_yp = 0; \
|
||||
pw = (struct passwd *)&local_password; \
|
||||
} \
|
||||
}
|
||||
|
||||
#endif /* YP */
|
||||
|
||||
@ -1,15 +1,47 @@
|
||||
# From: @(#)Makefile 8.3 (Berkeley) 4/2/94
|
||||
# $Id: Makefile,v 1.17 1995/09/03 11:40:37 markm Exp $
|
||||
# $Id: Makefile,v 1.18 1995/09/14 21:02:16 gibbs Exp $
|
||||
|
||||
PROG= passwd
|
||||
SRCS= local_passwd.c yp_passwd.c passwd.c pw_copy.c pw_util.c pw_yp.c
|
||||
SRCS= local_passwd.c yppasswd_private_xdr.c yppasswd_comm.c yp_passwd.c \
|
||||
passwd.c pw_copy.c pw_util.c pw_yp.c
|
||||
|
||||
DPADD= ${LIBCRYPT} ${LIBRPCSVC}
|
||||
LDADD= -lcrypt -lrpcsvc
|
||||
.PATH: ${.CURDIR}/../../usr.bin/chpass ${.CURDIR}/../../usr.sbin/vipw \
|
||||
${.CURDIR}/../rlogin
|
||||
${.CURDIR}/../rlogin ${.CURDIR}/../../libexec/ypxfr \
|
||||
${.CURDIR}/../../usr.sbin/rpc.yppasswdd
|
||||
|
||||
CFLAGS+=-DCRYPT -DYP -I${.CURDIR} -I${.CURDIR}/../../usr.sbin/vipw \
|
||||
-I${.CURDIR}/../../usr.bin/chpass
|
||||
CFLAGS+= -DCRYPT -DYP -I. -I${.CURDIR} -I${.CURDIR}/../../usr.sbin/vipw \
|
||||
-I${.CURDIR}/../../usr.bin/chpass -I${.CURDIR}/../../libexec/ypxfr \
|
||||
-I${.CURDIR}/../../usr.sbin/rpc.yppasswdd -Dyp_error=warnx
|
||||
|
||||
SRCS+= ypxfr_misc.c yp_clnt.c yppasswd_clnt.c
|
||||
|
||||
CLEANFILES= yp.h yp_clnt.c yppasswd.h yppasswd_clnt.c \
|
||||
yppasswd_private.h yppasswd_private_xdr.c
|
||||
|
||||
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}
|
||||
|
||||
BINOWN= root
|
||||
BINMODE=4555
|
||||
|
||||
@ -87,6 +87,19 @@ user does not exist in either the local password database of the
|
||||
NIS password maps,
|
||||
.Nm passwd
|
||||
returns an error.
|
||||
.Pp
|
||||
When changing an NIS password, unprivileged users are required to provide
|
||||
their old password for authentication (the
|
||||
.Xr rpc.yppasswdd 8
|
||||
daemon requires the original password before
|
||||
it will allow any changes to the NIS password maps).
|
||||
This restriction applies even to the
|
||||
super-user, with one important exception: the password authentication is
|
||||
bypassed for the super-user on the NIS master server. This means that
|
||||
the super-user on the NIS master server can make unrestricted changes to
|
||||
anyone's NIS password. The super-user on NIS client systems and NIS slave
|
||||
servers still needs to provide a password before the update will be processed.
|
||||
.Pp
|
||||
The following additional options are supported for use with NIS:
|
||||
.Bl -tag -width flag
|
||||
.It Fl y
|
||||
@ -114,17 +127,39 @@ default,
|
||||
will try to change the NIS password. The
|
||||
.Fl l
|
||||
flag can be used to change the local password instead.
|
||||
.El
|
||||
.It Fl d Ar domain
|
||||
Specify what domain to use when changing an NIS password. By default,
|
||||
.Nm passwd
|
||||
assumes that the system default domain should be used. This flag is
|
||||
primarily for use by the superuser on the NIS master server: a single
|
||||
NIS server can support multiple domains. It is also possible that the
|
||||
domainname on the NIS master may not be set (it is not necessary for
|
||||
an NIS server to also be a client) in which case the
|
||||
.Nm passwd
|
||||
command needs to be told what domain to operate on.
|
||||
.It Fl s Ar host
|
||||
Specify the name of an NIS server. This option, in conjunction
|
||||
with the
|
||||
.Fl d
|
||||
option, can be used to change an NIS password on a non-local NIS
|
||||
server. When a domain is specified with the
|
||||
.Fl d
|
||||
option and
|
||||
.Nm passwd
|
||||
is unable to determine the name of the NIS master server (possibly because
|
||||
the local domainname isn't set), the name of the NIS master is assumed to
|
||||
be ``localhost''. This can be overriden with the
|
||||
.Fl s
|
||||
flag. The specified hostname need not be the name of an NIS master: the
|
||||
name of the NIS master for a given map can be determined by querying any
|
||||
NIS server (master or slave) in a domain, so specifying the name of a
|
||||
slave server will work equally well.
|
||||
.Pp
|
||||
When changing an NIS password, the user is required to provide
|
||||
the old password for authentication (the
|
||||
.Xr yppasswdd 8
|
||||
daemon requires the original password before
|
||||
it will allow any changes to the NIS password maps).
|
||||
This restriction applies even to the
|
||||
super-user: the only way for an administrator to override a
|
||||
user's NIS password is by modifying the NIS password maps on
|
||||
the master NIS server.
|
||||
.It Fl o
|
||||
Do not automatically override the password authentication checks for the
|
||||
super-user on the NIS master server; assume 'old' mode instead. This
|
||||
flag is of limited practical use but is useful for testing.
|
||||
.El
|
||||
.Sh FILES
|
||||
.Bl -tag -width /etc/master.passwd -compact
|
||||
.It Pa /etc/master.passwd
|
||||
|
||||
@ -43,7 +43,7 @@ static const char copyright[] =
|
||||
#ifndef lint
|
||||
static const char sccsid[] = "From: @(#)passwd.c 8.3 (Berkeley) 4/2/94";
|
||||
static const char rcsid[] =
|
||||
"$Id$";
|
||||
"$Id: passwd.c,v 1.7 1995/12/16 09:45:15 markm Exp $";
|
||||
#endif /* not lint */
|
||||
|
||||
#include <err.h>
|
||||
@ -56,9 +56,10 @@ static const char rcsid[] =
|
||||
#ifdef YP
|
||||
#include <pwd.h>
|
||||
#include <pw_yp.h>
|
||||
char *prog_name;
|
||||
#include <rpcsvc/yp.h>
|
||||
int __use_yp = 0;
|
||||
int yp_passwd(char *user);
|
||||
int yp_errno = YP_TRUE;
|
||||
extern int yp_passwd __P(( char * ));
|
||||
#endif
|
||||
|
||||
#ifdef KERBEROS
|
||||
@ -83,9 +84,9 @@ main(argc, argv)
|
||||
#ifdef YP
|
||||
#ifdef KERBEROS
|
||||
char realm[REALM_SZ];
|
||||
#define OPTIONS "lysfi:r:u:"
|
||||
#define OPTIONS "d:h:lysfoi:r:u:"
|
||||
#else
|
||||
#define OPTIONS "lysf"
|
||||
#define OPTIONS "d:h:lysfo"
|
||||
#endif
|
||||
#else
|
||||
#ifdef KERBEROS
|
||||
@ -99,7 +100,7 @@ main(argc, argv)
|
||||
#ifdef YP
|
||||
int res = 0;
|
||||
|
||||
if (strstr(argv[0], (prog_name = "yppasswd"))) __use_yp = 1;
|
||||
if (strstr(argv[0], "yppasswd")) __use_yp = 1;
|
||||
#endif
|
||||
|
||||
while ((ch = getopt(argc, argv, OPTIONS)) != EOF) {
|
||||
@ -122,6 +123,33 @@ main(argc, argv)
|
||||
case 'y': /* Change NIS password */
|
||||
__use_yp = 1;
|
||||
break;
|
||||
case 'd': /* Specify NIS domain. */
|
||||
#ifdef PARANOID
|
||||
if (!getuid()) {
|
||||
#endif
|
||||
yp_domain = optarg;
|
||||
if (yp_server == NULL)
|
||||
yp_server = "localhost";
|
||||
#ifdef PARANOID
|
||||
} else {
|
||||
warnx("Only the super-user may use the -d flag.");
|
||||
}
|
||||
#endif
|
||||
break;
|
||||
case 'h': /* Specify NIS server. */
|
||||
#ifdef PARANOID
|
||||
if (!getuid()) {
|
||||
#endif
|
||||
yp_server = optarg;
|
||||
#ifdef PARANOID
|
||||
} else {
|
||||
warnx("Only the super-user may use the -h flag.");
|
||||
}
|
||||
#endif
|
||||
break;
|
||||
case 'o':
|
||||
force_old++;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
case '?':
|
||||
@ -152,8 +180,8 @@ main(argc, argv)
|
||||
#ifdef KERBEROS
|
||||
if (__use_yp || (iflag == NULL && rflag == NULL && uflag == NULL)) {
|
||||
#endif
|
||||
res = use_yp(uname);
|
||||
if (res == USER_YP_ONLY) {
|
||||
res = use_yp(uname, 0, 0);
|
||||
if (res == USER_YP_ONLY || __use_yp) {
|
||||
if (!use_local_passwd) {
|
||||
exit(yp_passwd(uname));
|
||||
} else {
|
||||
@ -198,9 +226,10 @@ usage()
|
||||
fprintf(stderr,
|
||||
"usage: passwd [-l] [-i instance] [-r realm] [-u fullname]\n");
|
||||
fprintf(stderr,
|
||||
" [-l] [-y] [user]\n");
|
||||
" [-l] [-y] [-o] [-d domain [-h host]] [user]\n");
|
||||
#else
|
||||
(void)fprintf(stderr, "usage: passwd [-l] [-y] [user] \n");
|
||||
(void)fprintf(stderr, "usage: passwd [-l] [-y] [-o] [-d domain \
|
||||
[-h host]] [user] \n");
|
||||
#endif
|
||||
#else
|
||||
#ifdef KERBEROS
|
||||
|
||||
@ -45,137 +45,141 @@
|
||||
#include <rpcsvc/ypclnt.h>
|
||||
#include <rpcsvc/yppasswd.h>
|
||||
#include <pw_yp.h>
|
||||
|
||||
extern char *prog_name;
|
||||
uid_t uid;
|
||||
#include "yppasswd_comm.h"
|
||||
|
||||
extern char *getnewpasswd __P(( struct passwd * , int ));
|
||||
|
||||
char *
|
||||
getserver( void )
|
||||
{
|
||||
char *domainname, *master;
|
||||
int port, err;
|
||||
int getrpcport();
|
||||
|
||||
if ((err = yp_get_default_domain(&domainname)) != 0) {
|
||||
fprintf(stderr, "%s: can't get local yp domain: %s\n",
|
||||
prog_name, yperr_string(err));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if ((err = yp_master(domainname, "passwd.byname", &master)) != 0) {
|
||||
fprintf(stderr, "%s: can't find the master ypserver: %s\n",
|
||||
prog_name, yperr_string(err));
|
||||
return NULL;
|
||||
}
|
||||
port = getrpcport(master, YPPASSWDPROG, YPPASSWDPROC_UPDATE, IPPROTO_UDP);
|
||||
if (port==0) {
|
||||
fprintf (stderr, "%s: yppasswdd not running on NIS master host\n",
|
||||
prog_name);
|
||||
return NULL;
|
||||
}
|
||||
if (port >= IPPORT_RESERVED) {
|
||||
fprintf (stderr, "%s: yppasswd daemon running on illegal port.\n",
|
||||
prog_name);
|
||||
return NULL;
|
||||
}
|
||||
return master;
|
||||
}
|
||||
|
||||
int
|
||||
yp_passwd(char *user)
|
||||
{
|
||||
struct timeval timeout;
|
||||
struct yppasswd yppasswd;
|
||||
struct passwd *pw;
|
||||
CLIENT *clnt;
|
||||
char *master;
|
||||
int err, status;
|
||||
char *s;
|
||||
struct timeval timeout;
|
||||
struct yppasswd yppasswd;
|
||||
struct master_yppasswd master_yppasswd;
|
||||
struct passwd *pw;
|
||||
CLIENT *clnt;
|
||||
struct rpc_err err;
|
||||
char *master;
|
||||
int *status = NULL;
|
||||
uid_t uid;
|
||||
|
||||
if ((master = getserver()) == NULL) {
|
||||
exit(1);
|
||||
}
|
||||
_use_yp = 1;
|
||||
|
||||
/* Obtain the passwd struct for the user whose password is to be changed.
|
||||
*/
|
||||
uid = getuid();
|
||||
if (user == NULL) {
|
||||
if ((pw = getpwuid(uid)) == NULL) {
|
||||
fprintf ( stderr, "%s: unknown user (uid=%d).\n",
|
||||
prog_name, (int)uid );
|
||||
exit(1);
|
||||
}
|
||||
} else {
|
||||
if ((pw = getpwnam(user)) == NULL) {
|
||||
fprintf ( stderr, "%s: unknown user: %s.\n", prog_name, user );
|
||||
exit(1);
|
||||
}
|
||||
if (pw->pw_uid != uid && uid != 0) {
|
||||
fprintf ( stderr, "%s: Only root may change account information "
|
||||
"for others\n", prog_name );
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
uid = getuid();
|
||||
|
||||
/* Use the correct password */
|
||||
pw = (struct passwd *)&yp_password;
|
||||
if ((master = get_yp_master(1)) == NULL) {
|
||||
warnx("failed to find NIS master server");
|
||||
return(1);
|
||||
}
|
||||
|
||||
/* Initialize password information */
|
||||
yppasswd.newpw.pw_passwd = pw->pw_passwd;
|
||||
yppasswd.newpw.pw_name = pw->pw_name;
|
||||
yppasswd.newpw.pw_uid = pw->pw_uid;
|
||||
yppasswd.newpw.pw_gid = pw->pw_gid;
|
||||
yppasswd.newpw.pw_gecos = pw->pw_gecos;
|
||||
yppasswd.newpw.pw_dir = pw->pw_dir;
|
||||
yppasswd.newpw.pw_shell = pw->pw_shell;
|
||||
yppasswd.oldpass = NULL;
|
||||
/*
|
||||
* It is presumed that by the time we get here, use_yp()
|
||||
* has been called and that we have verified that the user
|
||||
* actually exists. This being the case, the yp_password
|
||||
* stucture has already been filled in for us.
|
||||
*/
|
||||
|
||||
printf("Changing NIS password for %s on %s.\n", pw->pw_name, master);
|
||||
/* Use the correct password */
|
||||
pw = (struct passwd *)&yp_password;
|
||||
|
||||
/* Get old password */
|
||||
if(pw->pw_passwd[0]) {
|
||||
if (pw->pw_uid != uid && uid != 0) {
|
||||
warnx("Only the super-user may change account information \
|
||||
for other users");
|
||||
return(1);
|
||||
}
|
||||
|
||||
s = getpass ("Old password: ");
|
||||
if( strcmp(crypt(s, pw->pw_passwd), pw->pw_passwd)) {
|
||||
fprintf(stderr, "Sorry.\n");
|
||||
exit (1);
|
||||
}
|
||||
yppasswd.oldpass = strdup(s);
|
||||
} else
|
||||
yppasswd.oldpass = "";
|
||||
/* Initialize password information */
|
||||
if (suser_override) {
|
||||
master_yppasswd.newpw.pw_passwd = strdup(pw->pw_passwd);
|
||||
master_yppasswd.newpw.pw_name = strdup(pw->pw_name);
|
||||
master_yppasswd.newpw.pw_uid = pw->pw_uid;
|
||||
master_yppasswd.newpw.pw_gid = pw->pw_gid;
|
||||
master_yppasswd.newpw.pw_expire = pw->pw_expire;
|
||||
master_yppasswd.newpw.pw_change = pw->pw_change;
|
||||
master_yppasswd.newpw.pw_fields = pw->pw_fields;
|
||||
master_yppasswd.newpw.pw_gecos = strdup(pw->pw_gecos);
|
||||
master_yppasswd.newpw.pw_dir = strdup(pw->pw_dir);
|
||||
master_yppasswd.newpw.pw_shell = strdup(pw->pw_shell);
|
||||
master_yppasswd.newpw.pw_class = strdup(pw->pw_class);
|
||||
master_yppasswd.oldpass = "";
|
||||
master_yppasswd.domain = yp_domain;
|
||||
} else {
|
||||
yppasswd.newpw.pw_passwd = strdup(pw->pw_passwd);
|
||||
yppasswd.newpw.pw_name = strdup(pw->pw_name);
|
||||
yppasswd.newpw.pw_uid = pw->pw_uid;
|
||||
yppasswd.newpw.pw_gid = pw->pw_gid;
|
||||
yppasswd.newpw.pw_gecos = strdup(pw->pw_gecos);
|
||||
yppasswd.newpw.pw_dir = strdup(pw->pw_dir);
|
||||
yppasswd.newpw.pw_shell = strdup(pw->pw_shell);
|
||||
yppasswd.oldpass = "";
|
||||
}
|
||||
|
||||
if ((s = getnewpasswd(pw, 1)) == NULL)
|
||||
exit (1);
|
||||
yppasswd.newpw.pw_passwd = s;
|
||||
if (suser_override)
|
||||
printf("Changing NIS password for %s on %s in domain %s.\n",
|
||||
pw->pw_name, master, yp_domain);
|
||||
else
|
||||
printf("Changing NIS password for %s on %s.\n",
|
||||
pw->pw_name, master);
|
||||
|
||||
/* The yppasswd.x file said `unix authentication required',
|
||||
* so I added it. This is the only reason it is in here.
|
||||
* My yppasswdd doesn't use it, but maybe some others out there
|
||||
* do. --okir
|
||||
*/
|
||||
clnt = clnt_create( master, YPPASSWDPROG, YPPASSWDVERS, "udp" );
|
||||
clnt->cl_auth = authunix_create_default();
|
||||
bzero( (char*)&status, sizeof(status) );
|
||||
timeout.tv_sec = 25; timeout.tv_usec = 0;
|
||||
err = clnt_call( clnt, YPPASSWDPROC_UPDATE,
|
||||
xdr_yppasswd, (char*)&yppasswd,
|
||||
xdr_int, (char*)&status,
|
||||
&timeout );
|
||||
/* Get old password */
|
||||
|
||||
if (err) {
|
||||
clnt_perrno(err);
|
||||
fprintf( stderr, "\n" );
|
||||
} else if (status) {
|
||||
fprintf( stderr, "Error while changing NIS password.\n");
|
||||
}
|
||||
if(pw->pw_passwd[0] && !suser_override) {
|
||||
yppasswd.oldpass = strdup(getpass("Old Password: "));
|
||||
if (strcmp(crypt(yppasswd.oldpass, pw->pw_passwd),
|
||||
pw->pw_passwd)) {
|
||||
errx(1, "Sorry.");
|
||||
}
|
||||
|
||||
printf("\nNIS password has%s been changed on %s.\n",
|
||||
(err || status)? " not" : "", master);
|
||||
}
|
||||
|
||||
auth_destroy( clnt->cl_auth );
|
||||
clnt_destroy( clnt );
|
||||
exit ((err || status) != 0);
|
||||
if (suser_override) {
|
||||
if ((master_yppasswd.newpw.pw_passwd = getnewpasswd(pw, 1)) == NULL)
|
||||
return(1);
|
||||
} else {
|
||||
if ((yppasswd.newpw.pw_passwd = getnewpasswd(pw, 1)) == NULL)
|
||||
return(1);
|
||||
}
|
||||
|
||||
if (suser_override) {
|
||||
if (senddat(&master_yppasswd)) {
|
||||
warnx("failed to send request to rpc.yppasswdd");
|
||||
return(1);
|
||||
}
|
||||
status = getresp();
|
||||
} else {
|
||||
if ((clnt = clnt_create(master, YPPASSWDPROG,
|
||||
YPPASSWDVERS, "udp")) == NULL) {
|
||||
warnx("failed to contact rpc.yppasswdd on host %s: %s",
|
||||
master, clnt_spcreateerror(""));
|
||||
return(1);
|
||||
}
|
||||
/*
|
||||
* The yppasswd.x file said `unix authentication required',
|
||||
* so I added it. This is the only reason it is in here.
|
||||
* My yppasswdd doesn't use it, but maybe some others out there
|
||||
* do. --okir
|
||||
*/
|
||||
clnt->cl_auth = authunix_create_default();
|
||||
|
||||
status = yppasswdproc_update_1(&yppasswd, clnt);
|
||||
clnt_geterr(clnt, &err);
|
||||
|
||||
auth_destroy(clnt->cl_auth);
|
||||
clnt_destroy(clnt);
|
||||
}
|
||||
|
||||
if ((!suser_override && err.re_status != RPC_SUCCESS) ||
|
||||
status == NULL || *status) {
|
||||
errx(1, "Failed to change NIS password: %s",
|
||||
(err.re_status != RPC_SUCCESS && !suser_override) ?
|
||||
clnt_sperrno(err.re_status) :
|
||||
"rpc.yppasswdd returned error status");
|
||||
}
|
||||
|
||||
printf("\nNIS password has%s been changed on %s.\n",
|
||||
((err.re_status != RPC_SUCCESS && !suser_override)
|
||||
|| status == NULL || *status) ?
|
||||
" not" : "", master);
|
||||
|
||||
return ((err.re_status || status == NULL || *status));
|
||||
}
|
||||
#endif /* YP */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user