Remove appl/su
This commit is contained in:
Nicolas Williams
committed by
Nico Williams
Nico Williams
parent
af9e938867
commit
8a77f45aff
1
.gitignore
vendored
1
.gitignore
vendored
@@ -98,7 +98,6 @@ asn1_*.[cx]
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/appl/kf/kfd
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/appl/otp/otp
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/appl/otp/otpprint
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/appl/su/su
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/appl/test/gssapi_client
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/appl/test/gssapi_server
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/appl/test/http_client
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@@ -16,7 +16,6 @@ SUBDIRS = \
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dbutils \
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$(dir_otp) \
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gssmask \
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su \
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test \
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kf \
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$(dir_dce)
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@@ -1,129 +0,0 @@
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2008-07-15 Love Hörnquist Åstrand <lha@it.su.se>
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* Makefile.am: no krb4
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* su.c: Drop kerberos 4 support.
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2007-10-19 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c: read environment from _PATH_ETC_ENVIRONMENT
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* supaths.c: paths
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2007-08-02 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c: Check all local realms when su-ing, from Magnus Holmberg.
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2007-06-19 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c: If not root and not setuid, print warning.
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2006-01-17 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c (group_member_p): rename from group_member to avoid name
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pollution from glibc headers. Fixed based on report from David Love.
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2006-01-12 Johan Danielsson <joda@pdc.kth.se>
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* su.c: fix reversed logic when deciding to print tty or not
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2005-10-22 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c: Check return value from asprintf instead of string != NULL
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since it undefined behavior on Linux. From Björn Sandell
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2005-05-10 Dave Love <fx@gnu.org>
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* su.c: Include <crypt.h>.
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2003-09-03 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c: s/des_read_pw_string/UI_UTIL_read_pw_string/
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2003-05-06 Johan Danielsson <joda@pdc.kth.se>
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* su.c: remove accidentally committed code that prints the command
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being executed
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2003-03-18 Love Hörnquist Åstrand <lha@it.su.se>
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* su.c (krb5_start_session): krb5_afslog doesn't depend on KRB4
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any more
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2002-02-19 Johan Danielsson <joda@pdc.kth.se>
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* su.c: make this build without krb5
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2002-01-09 Jacques Vidrine <n@nectar.cc>
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* su.c: Don't use getlogin() to determine whether we are root.
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Patch by joda.
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2001-06-12 Assar Westerlund <assar@sics.se>
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* su.c: check memory allocations. add some const
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2000-12-31 Assar Westerlund <assar@sics.se>
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* su.c (krb5_verify): handle krb5_init_context failure
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consistently
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2000-08-28 Johan Danielsson <joda@pdc.kth.se>
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* su.c: set KRBTKFILE
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2000-07-10 Assar Westerlund <assar@sics.se>
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* Makefile.am: actually install su
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* su.c (krb5_verify): try harder freeing. do not get upset on
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interrupted password read
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2000-06-09 Assar Westerlund <assar@sics.se>
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* su.c (main): work-around for setuid and capabilities bug fixed
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in Linux 2.2.16
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2000-06-03 Assar Westerlund <assar@sics.se>
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* su.c (main): just ignore shadow information if getspnam returns
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NULL
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1999-10-20 Assar Westerlund <assar@sics.se>
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* Makefile.am: use LIB_roken
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1999-09-28 Assar Westerlund <assar@sics.se>
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* su.c (krb5_verify): use krb5_verify_user_lrealm
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1999-08-04 Assar Westerlund <assar@sics.se>
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* su.c: add support for shadow passwords and rewrite some logic.
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From Miroslav Ruda <ruda@ics.muni.cz>
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* Makefile.am: add libkafs
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1999-06-15 Assar Westerlund <assar@sics.se>
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* su.c (main): conditionalize `getlogin'
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1999-05-11 Assar Westerlund <assar@sics.se>
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* su.c (verfiy_krb5): get the name out of the ccache before
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closing it
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1999-05-05 Assar Westerlund <assar@sics.se>
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* su.c: some more error checking
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Wed Apr 21 21:04:36 1999 Assar Westerlund <assar@sics.se>
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* su.c (-f): implement
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* su.c: implement -i
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(verify_krb5): correct the ownership on the credential cache
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Tue Apr 20 13:26:13 1999 Johan Danielsson <joda@hella.pdc.kth.se>
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* su.c: don't depend on paths.h
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@@ -1,16 +0,0 @@
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# $Id$
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include $(top_srcdir)/Makefile.am.common
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bin_PROGRAMS = su
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bin_SUIDS = su
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su_SOURCES = su.c supaths.h
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man_MANS = su.1
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LDADD = $(LIB_kafs) \
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$(top_builddir)/lib/krb5/libkrb5.la \
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$(LIB_hcrypto) \
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$(top_builddir)/lib/asn1/libasn1.la \
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$(LIB_roken)
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EXTRA_DIST = NTMakefile $(man_MANS)
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@@ -1,35 +0,0 @@
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########################################################################
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#
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# Copyright (c) 2009, Secure Endpoints Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# - Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# - Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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RELDIR=appl\su
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!include ../../windows/NTMakefile.w32
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123
appl/su/su.1
123
appl/su/su.1
@@ -1,123 +0,0 @@
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.\" Copyright (c) 2003 - 2006 Kungliga Tekniska Högskolan
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.\" (Royal Institute of Technology, Stockholm, Sweden).
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\"
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\"
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" 3. Neither the name of the Institute nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Id$
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.\"
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.Dd January 12, 2006
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.Dt SU 1
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.Os HEIMDAL
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.Sh NAME
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.Nm su
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.Nd substitute user identity
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.Sh SYNOPSIS
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.Nm su
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.Op Fl K | Fl Fl no-kerberos
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.Op Fl f
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.Op Fl l | Fl Fl full
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.Op Fl m
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.Oo Fl i Ar instance \*(Ba Xo
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.Fl Fl instance= Ns Ar instance
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.Xc
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.Oc
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.Oo Fl c Ar command \*(Ba Xo
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.Fl Fl command= Ns Ar command
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.Xc
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.Oc
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.Op Ar login Op Ar "shell arguments"
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.Sh DESCRIPTION
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.Nm su
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will use Kerberos authentication provided that an instance for the
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user wanting to change effective UID is present in a file named
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.Pa .k5login
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in the target user id's home directory
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.Pp
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A special case exists where
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.Ql root Ap s
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.Pa ~/.k5login
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needs to contain an entry for:
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.Ql user Ns / Ns Ao instance Ac Ns @ Ns REALM
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for
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.Nm su
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to succed (where
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.Aq instance
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is
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.Ql root
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unless changed with
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.Fl i ) .
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.Pp
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In the absence of either an entry for current user in said file or
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other problems like missing
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.Ql host/hostname@REALM
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keys in the system's
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keytab, or user typing the wrong password,
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.Nm su
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will fall back to traditional
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.Pa /etc/passwd
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authentication.
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.Pp
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When using
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.Pa /etc/passwd
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authentication,
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.Nm su
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allows
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.Ql root
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access only to members of the group
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.Ql wheel ,
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or to any user (with knowledge of the
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.Ql root
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password) if that group
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does not exist, or has no members.
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.Pp
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The options are as follows:
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.Bl -item -width Ds
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.It
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.Fl K ,
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.Fl Fl no-kerberos
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don't use Kerberos.
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.It
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.Fl f
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don't read .cshrc.
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.It
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.Fl l ,
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.Fl Fl full
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simulate full login.
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.It
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.Fl m
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leave environment unmodified.
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.It
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.Fl i Ar instance ,
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.Fl Fl instance= Ns Ar instance
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root instance to use.
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.It
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.Fl c Ar command ,
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.Fl Fl command= Ns Ar command
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command to execute.
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.El
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534
appl/su/su.c
534
appl/su/su.c
@@ -1,534 +0,0 @@
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/*
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* Copyright (c) 1999 - 2008 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of KTH nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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#include <config.h>
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RCSID("$Id$");
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <syslog.h>
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#ifdef HAVE_PATHS_H
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#include <paths.h>
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#endif
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#ifdef HAVE_SHADOW_H
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#include <shadow.h>
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#endif
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#include <pwd.h>
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#ifdef HAVE_CRYPT_H
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#include <crypt.h>
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#endif
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#include "crypto-headers.h"
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#ifdef KRB5
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#include <krb5.h>
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#endif
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#ifndef NO_AFS
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#include <kafs.h>
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#endif
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#include <err.h>
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#include <roken.h>
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#include <getarg.h>
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#include "supaths.h"
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#if !HAVE_DECL_ENVIRON
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extern char **environ;
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#endif
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int kerberos_flag = 1;
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int csh_f_flag;
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int full_login;
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int env_flag;
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char *kerberos_instance = "root";
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int help_flag;
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int version_flag;
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char *cmd;
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char tkfile[256];
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struct getargs args[] = {
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{ "kerberos", 'K', arg_negative_flag, &kerberos_flag,
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"don't use kerberos", NULL },
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{ NULL, 'f', arg_flag, &csh_f_flag,
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"don't read .cshrc", NULL },
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{ "full", 'l', arg_flag, &full_login,
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"simulate full login", NULL },
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{ NULL, 'm', arg_flag, &env_flag,
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"leave environment unmodified", NULL },
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{ "instance", 'i', arg_string, &kerberos_instance,
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"root instance to use", NULL },
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{ "command", 'c', arg_string, &cmd,
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"command to execute", NULL },
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{ "help", 'h', arg_flag, &help_flag, NULL, NULL },
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{ "version", 0, arg_flag, &version_flag, NULL, NULL },
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};
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static void
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usage (int ret)
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{
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arg_printusage (args,
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sizeof(args)/sizeof(*args),
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NULL,
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"[login [shell arguments]]");
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exit (ret);
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}
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static void
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free_info(struct passwd *p)
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{
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free (p->pw_name);
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free (p->pw_passwd);
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free (p->pw_dir);
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free (p->pw_shell);
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free (p);
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}
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static struct passwd*
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dup_info(const struct passwd *pwd)
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{
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struct passwd *info;
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info = malloc(sizeof(*info));
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if(info == NULL)
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return NULL;
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info->pw_name = strdup(pwd->pw_name);
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info->pw_passwd = strdup(pwd->pw_passwd);
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info->pw_uid = pwd->pw_uid;
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info->pw_gid = pwd->pw_gid;
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info->pw_dir = strdup(pwd->pw_dir);
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info->pw_shell = strdup(pwd->pw_shell);
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if(info->pw_name == NULL || info->pw_passwd == NULL ||
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info->pw_dir == NULL || info->pw_shell == NULL) {
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free_info (info);
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return NULL;
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}
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return info;
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}
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#ifdef KRB5
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static krb5_context context;
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static krb5_ccache ccache;
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static int
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krb5_verify(const struct passwd *login_info,
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const struct passwd *su_info,
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const char *instance)
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{
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krb5_error_code ret;
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krb5_principal p;
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krb5_realm *realms, *r;
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char *login_name = NULL;
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int user_ok = 0;
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#if defined(HAVE_GETLOGIN) && !defined(POSIX_GETLOGIN)
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login_name = getlogin();
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#endif
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ret = krb5_init_context (&context);
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if (ret) {
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#if 0
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warnx("krb5_init_context failed: %d", ret);
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#endif
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return 1;
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}
|
||||
|
||||
ret = krb5_get_default_realms(context, &realms);
|
||||
if (ret)
|
||||
return 1;
|
||||
|
||||
/* Check all local realms */
|
||||
for (r = realms; *r != NULL && !user_ok; r++) {
|
||||
|
||||
if (login_name == NULL || strcmp (login_name, "root") == 0)
|
||||
login_name = login_info->pw_name;
|
||||
if (strcmp (su_info->pw_name, "root") == 0)
|
||||
ret = krb5_make_principal(context, &p, *r,
|
||||
login_name,
|
||||
instance,
|
||||
NULL);
|
||||
else
|
||||
ret = krb5_make_principal(context, &p, *r,
|
||||
su_info->pw_name,
|
||||
NULL);
|
||||
if (ret) {
|
||||
krb5_free_host_realm(context, realms);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* if we are su-ing too root, check with krb5_kuserok */
|
||||
if (su_info->pw_uid == 0 && !krb5_kuserok(context, p, su_info->pw_name))
|
||||
continue;
|
||||
|
||||
ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, &ccache);
|
||||
if(ret) {
|
||||
krb5_free_host_realm(context, realms);
|
||||
krb5_free_principal (context, p);
|
||||
return 1;
|
||||
}
|
||||
ret = krb5_verify_user(context, p, ccache, NULL, TRUE, NULL);
|
||||
krb5_free_principal (context, p);
|
||||
switch (ret) {
|
||||
case 0:
|
||||
user_ok = 1;
|
||||
break;
|
||||
case KRB5_LIBOS_PWDINTR :
|
||||
krb5_cc_destroy(context, ccache);
|
||||
break;
|
||||
case KRB5KRB_AP_ERR_BAD_INTEGRITY:
|
||||
case KRB5KRB_AP_ERR_MODIFIED:
|
||||
krb5_cc_destroy(context, ccache);
|
||||
krb5_warnx(context, "Password incorrect");
|
||||
break;
|
||||
default :
|
||||
krb5_cc_destroy(context, ccache);
|
||||
krb5_warn(context, ret, "krb5_verify_user");
|
||||
break;
|
||||
}
|
||||
}
|
||||
krb5_free_host_realm(context, realms);
|
||||
if (!user_ok)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
krb5_start_session(void)
|
||||
{
|
||||
krb5_ccache ccache2;
|
||||
char *cc_name;
|
||||
int ret;
|
||||
|
||||
ret = krb5_cc_new_unique(context, krb5_cc_type_file, NULL, &ccache2);
|
||||
if (ret) {
|
||||
krb5_cc_destroy(context, ccache);
|
||||
return 1;
|
||||
}
|
||||
|
||||
ret = krb5_cc_copy_cache(context, ccache, ccache2);
|
||||
if (ret) {
|
||||
krb5_cc_destroy(context, ccache);
|
||||
krb5_cc_destroy(context, ccache2);
|
||||
return 1;
|
||||
}
|
||||
|
||||
ret = asprintf(&cc_name, "%s:%s", krb5_cc_get_type(context, ccache2),
|
||||
krb5_cc_get_name(context, ccache2));
|
||||
if (ret == -1) {
|
||||
krb5_cc_destroy(context, ccache);
|
||||
krb5_cc_destroy(context, ccache2);
|
||||
errx(1, "malloc - out of memory");
|
||||
}
|
||||
esetenv("KRB5CCNAME", cc_name, 1);
|
||||
|
||||
#ifndef NO_AFS
|
||||
/* convert creds? */
|
||||
if(k_hasafs()) {
|
||||
if (k_setpag() == 0)
|
||||
krb5_afslog(context, ccache2, NULL, NULL);
|
||||
}
|
||||
#endif
|
||||
|
||||
krb5_cc_close(context, ccache2);
|
||||
krb5_cc_destroy(context, ccache);
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#define GROUP_MEMBER 0
|
||||
#define GROUP_MISSING 1
|
||||
#define GROUP_EMPTY 2
|
||||
#define GROUP_NOT_MEMBER 3
|
||||
|
||||
static int
|
||||
group_member_p(const char *group, const char *user)
|
||||
{
|
||||
struct group *g;
|
||||
int i;
|
||||
g = getgrnam(group);
|
||||
if(g == NULL)
|
||||
return GROUP_MISSING;
|
||||
if(g->gr_mem[0] == NULL)
|
||||
return GROUP_EMPTY;
|
||||
for(i = 0; g->gr_mem[i] != NULL; i++)
|
||||
if(strcmp(user, g->gr_mem[i]) == 0)
|
||||
return GROUP_MEMBER;
|
||||
return GROUP_NOT_MEMBER;
|
||||
}
|
||||
|
||||
static int
|
||||
verify_unix(struct passwd *login, struct passwd *su)
|
||||
{
|
||||
char prompt[128];
|
||||
char pw_buf[1024];
|
||||
char *pw;
|
||||
int r;
|
||||
if(su->pw_passwd != NULL && *su->pw_passwd != '\0') {
|
||||
snprintf(prompt, sizeof(prompt), "%s's password: ", su->pw_name);
|
||||
r = UI_UTIL_read_pw_string(pw_buf, sizeof(pw_buf), prompt, 0);
|
||||
if(r != 0)
|
||||
exit(0);
|
||||
pw = crypt(pw_buf, su->pw_passwd);
|
||||
memset_s(pw_buf, sizeof(pw_buf), 0, sizeof(pw_buf));
|
||||
if(strcmp(pw, su->pw_passwd) != 0) {
|
||||
syslog (LOG_ERR | LOG_AUTH, "%s to %s: incorrect password",
|
||||
login->pw_name, su->pw_name);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
/* if su:ing to root, check membership of group wheel or root; if
|
||||
that group doesn't exist, or is empty, allow anyone to su
|
||||
root */
|
||||
if(su->pw_uid == 0) {
|
||||
#ifndef ROOT_GROUP
|
||||
#define ROOT_GROUP "wheel"
|
||||
#endif
|
||||
int gs = group_member_p(ROOT_GROUP, login->pw_name);
|
||||
if(gs == GROUP_NOT_MEMBER) {
|
||||
syslog (LOG_ERR | LOG_AUTH, "%s to %s: not in group %s",
|
||||
login->pw_name, su->pw_name, ROOT_GROUP);
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
int i, optidx = 0;
|
||||
char *su_user;
|
||||
struct passwd *su_info;
|
||||
struct passwd *login_info;
|
||||
|
||||
struct passwd *pwd;
|
||||
|
||||
char *shell;
|
||||
|
||||
int ok = 0;
|
||||
|
||||
setprogname (argv[0]);
|
||||
|
||||
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
|
||||
usage(1);
|
||||
|
||||
for (i=0; i < optidx; i++)
|
||||
if (strcmp(argv[i], "-") == 0) {
|
||||
full_login = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
if(help_flag)
|
||||
usage(0);
|
||||
if(version_flag) {
|
||||
print_version(NULL);
|
||||
exit(0);
|
||||
}
|
||||
if(optidx >= argc)
|
||||
su_user = "root";
|
||||
else
|
||||
su_user = argv[optidx++];
|
||||
|
||||
if (geteuid() != 0)
|
||||
warnx("Not setuid and you are not root, expect this to fail");
|
||||
|
||||
pwd = k_getpwnam(su_user);
|
||||
if(pwd == NULL)
|
||||
errx (1, "unknown login %s", su_user);
|
||||
if (pwd->pw_uid == 0 && strcmp ("root", su_user) != 0) {
|
||||
syslog (LOG_ALERT, "NIS attack, user %s has uid 0", su_user);
|
||||
errx (1, "unknown login %s", su_user);
|
||||
}
|
||||
su_info = dup_info(pwd);
|
||||
if (su_info == NULL)
|
||||
errx (1, "malloc: out of memory");
|
||||
|
||||
pwd = getpwuid(getuid());
|
||||
if(pwd == NULL)
|
||||
errx(1, "who are you?");
|
||||
login_info = dup_info(pwd);
|
||||
if (login_info == NULL)
|
||||
errx (1, "malloc: out of memory");
|
||||
if(env_flag)
|
||||
shell = login_info->pw_shell;
|
||||
else
|
||||
shell = su_info->pw_shell;
|
||||
if(shell == NULL || *shell == '\0')
|
||||
shell = _PATH_BSHELL;
|
||||
|
||||
|
||||
#ifdef KRB5
|
||||
if(kerberos_flag && ok == 0 &&
|
||||
krb5_verify(login_info, su_info, kerberos_instance) == 0)
|
||||
ok = 5;
|
||||
#endif
|
||||
|
||||
if(ok == 0 && login_info->pw_uid && verify_unix(login_info, su_info) != 0) {
|
||||
printf("Sorry!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
#ifdef HAVE_GETSPNAM
|
||||
{ struct spwd *sp;
|
||||
long today;
|
||||
|
||||
sp = getspnam(su_info->pw_name);
|
||||
if (sp != NULL) {
|
||||
today = time(0)/(24L * 60 * 60);
|
||||
if (sp->sp_expire > 0) {
|
||||
if (today >= sp->sp_expire) {
|
||||
if (login_info->pw_uid)
|
||||
errx(1,"Your account has expired.");
|
||||
else
|
||||
printf("Your account has expired.");
|
||||
}
|
||||
else if (sp->sp_expire - today < 14)
|
||||
printf("Your account will expire in %d days.\n",
|
||||
(int)(sp->sp_expire - today));
|
||||
}
|
||||
if (sp->sp_max > 0) {
|
||||
if (today >= sp->sp_lstchg + sp->sp_max) {
|
||||
if (login_info->pw_uid)
|
||||
errx(1,"Your password has expired. Choose a new one.");
|
||||
else
|
||||
printf("Your password has expired. Choose a new one.");
|
||||
}
|
||||
else if (today >= sp->sp_lstchg + sp->sp_max - sp->sp_warn)
|
||||
printf("Your account will expire in %d days.\n",
|
||||
(int)(sp->sp_lstchg + sp->sp_max -today));
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
{
|
||||
char *tty = ttyname (STDERR_FILENO);
|
||||
if (tty)
|
||||
syslog (LOG_NOTICE | LOG_AUTH, "%s to %s on %s",
|
||||
login_info->pw_name, su_info->pw_name, tty);
|
||||
else
|
||||
syslog (LOG_NOTICE | LOG_AUTH, "%s to %s",
|
||||
login_info->pw_name, su_info->pw_name);
|
||||
}
|
||||
|
||||
|
||||
if(!env_flag) {
|
||||
if(full_login) {
|
||||
char *t = getenv ("TERM");
|
||||
char **newenv = NULL;
|
||||
int j;
|
||||
|
||||
i = read_environment(_PATH_ETC_ENVIRONMENT, &newenv);
|
||||
|
||||
environ = malloc ((10 + i) * sizeof (char *));
|
||||
if (environ == NULL)
|
||||
err (1, "malloc");
|
||||
environ[0] = NULL;
|
||||
|
||||
for (j = 0; j < i; j++) {
|
||||
char *p = strchr(newenv[j], '=');
|
||||
if (p == NULL)
|
||||
errx(1, "enviroment '%s' missing '='", newenv[j]);
|
||||
*p++ = 0;
|
||||
esetenv (newenv[j], p, 1);
|
||||
}
|
||||
free(newenv);
|
||||
|
||||
esetenv ("PATH", _PATH_DEFPATH, 1);
|
||||
if (t)
|
||||
esetenv ("TERM", t, 1);
|
||||
if (chdir (su_info->pw_dir) < 0)
|
||||
errx (1, "no directory");
|
||||
}
|
||||
if (full_login || su_info->pw_uid)
|
||||
esetenv ("USER", su_info->pw_name, 1);
|
||||
esetenv("HOME", su_info->pw_dir, 1);
|
||||
esetenv("SHELL", shell, 1);
|
||||
}
|
||||
|
||||
{
|
||||
char **new_argv;
|
||||
char *p;
|
||||
|
||||
p = strrchr(shell, '/');
|
||||
if(p)
|
||||
p++;
|
||||
else
|
||||
p = shell;
|
||||
|
||||
if (strcmp(p, "csh") != 0)
|
||||
csh_f_flag = 0;
|
||||
|
||||
new_argv = malloc(((cmd ? 2 : 0) + 1 + argc - optidx + 1 + csh_f_flag)
|
||||
* sizeof(*new_argv));
|
||||
if (new_argv == NULL)
|
||||
err (1, "malloc");
|
||||
i = 0;
|
||||
if(full_login) {
|
||||
if (asprintf(&new_argv[i++], "-%s", p) == -1)
|
||||
errx (1, "malloc");
|
||||
} else
|
||||
new_argv[i++] = p;
|
||||
if (cmd) {
|
||||
new_argv[i++] = "-c";
|
||||
new_argv[i++] = cmd;
|
||||
}
|
||||
|
||||
if (csh_f_flag)
|
||||
new_argv[i++] = "-f";
|
||||
|
||||
for (argv += optidx; *argv; ++argv)
|
||||
new_argv[i++] = *argv;
|
||||
new_argv[i] = NULL;
|
||||
|
||||
if(setgid(su_info->pw_gid) < 0)
|
||||
err(1, "setgid");
|
||||
if (initgroups (su_info->pw_name, su_info->pw_gid) < 0)
|
||||
err (1, "initgroups");
|
||||
if(setuid(su_info->pw_uid) < 0
|
||||
|| (su_info->pw_uid != 0 && setuid(0) == 0))
|
||||
err(1, "setuid");
|
||||
|
||||
#ifdef KRB5
|
||||
if (ok == 5)
|
||||
krb5_start_session();
|
||||
#endif
|
||||
execve(shell, new_argv, environ);
|
||||
}
|
||||
|
||||
exit(1);
|
||||
}
|
||||
@@ -1,51 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2007 Kungliga Tekniska Högskolan
|
||||
* (Royal Institute of Technology, Stockholm, Sweden).
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/* $Id$ */
|
||||
|
||||
#ifndef __SU_PATH_H
|
||||
#define __SU_PATH_H
|
||||
|
||||
#ifndef _PATH_DEFPATH
|
||||
#define _PATH_DEFPATH "/usr/bin:/bin"
|
||||
#endif
|
||||
|
||||
#ifndef _PATH_BSHELL
|
||||
#define _PATH_BSHELL "/bin/sh"
|
||||
#endif
|
||||
|
||||
#ifndef _PATH_ETC_ENVIRONMENT
|
||||
#define _PATH_ETC_ENVIRONMENT SYSCONFDIR "/environment"
|
||||
#endif
|
||||
|
||||
#endif /* __SU_PATH_H */
|
||||
@@ -664,7 +664,6 @@ AC_CONFIG_FILES(Makefile \
|
||||
appl/dbutils/Makefile \
|
||||
appl/gssmask/Makefile \
|
||||
appl/otp/Makefile \
|
||||
appl/su/Makefile \
|
||||
appl/test/Makefile \
|
||||
appl/kf/Makefile \
|
||||
appl/dceutils/Makefile \
|
||||
|
||||
Reference in New Issue
Block a user