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# Shell function library to initialize Kerberos credentials
#
# Note that while many of the functions in this library could benefit from
# using "local" to avoid possibly hammering global variables, Solaris /bin/sh
# doesn't support local and this library aspires to be portable to Solaris
# Bourne shell. Instead, all private variables are prefixed with "tap_".
#
# The canonical version of this file is maintained in the rra-c-util package,
# which can be found at <https://www.eyrie.org/~eagle/software/rra-c-util/>.
#
# Written by Russ Allbery <eagle@eyrie.org>
# Copyright 2016 Russ Allbery <eagle@eyrie.org>
# Copyright 2009-2012
# The Board of Trustees of the Leland Stanford Junior University
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
# SPDX-License-Identifier: MIT
. "${C_TAP_SOURCE}/tap/libtap.sh"
# Set up Kerberos, including the ticket cache environment variable. Bail out
# if not successful, return 0 if successful, and return 1 if Kerberos is not
# configured. Sets the global principal variable to the principal to use.
kerberos_setup () {
tap_keytab=`test_file_path config/keytab`
principal=`test_file_path config/principal`
principal=`cat "$principal" 2>/dev/null`
if [ -z "$tap_keytab" ] || [ -z "$principal" ] ; then
return 1
fi
KRB5CCNAME=`test_tmpdir`/krb5cc_test; export KRB5CCNAME
kinit --no-afslog -k -t "$tap_keytab" "$principal" >/dev/null </dev/null
status=$?
if [ $status != 0 ] ; then
kinit -k -t "$tap_keytab" "$principal" >/dev/null </dev/null
status=$?
fi
if [ $status != 0 ] ; then
kinit -t "$tap_keytab" "$principal" >/dev/null </dev/null
status=$?
fi
if [ $status != 0 ] ; then
kinit -k -K "$tap_keytab" "$principal" >/dev/null </dev/null
status=$?
fi
if [ $status != 0 ] ; then
bail "Can't get Kerberos tickets"
fi
return 0
}
# Clean up at the end of a test. Currently only removes the ticket cache.
kerberos_cleanup () {
tap_tmp=`test_tmpdir`
rm -f "$tap_tmp"/krb5cc_test
}
# List the contents of a keytab with enctypes and keys. This adjusts for the
# difference between MIT Kerberos (which uses klist) and Heimdal (which uses
# ktutil). Be careful to try klist first, since the ktutil on MIT Kerberos
# may just hang. Takes the keytab to list and the file into which to save the
# output, and strips off the header containing the file name.
ktutil_list () {
tap_tmp=`test_tmpdir`
if klist -keK "$1" > "$tap_tmp"/ktutil-tmp 2>/dev/null ; then
:
else
ktutil -k "$1" list --keys > "$tap_tmp"/ktutil-tmp </dev/null \
2>/dev/null
fi
sed -e '/Keytab name:/d' -e "/^[^ ]*:/d" "$tap_tmp"/ktutil-tmp > "$2"
rm -f "$tap_tmp"/ktutil-tmp
}
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