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599c8a364f
While the script ultimately needs to be executable, the source file really shouldn't be. Signed-off-by: Andrea Bolognani <abologna@redhat.com>
323 lines
9.6 KiB
Bash
323 lines
9.6 KiB
Bash
#!/bin/sh
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#
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# This shell script checks the TLS certificates and options needed
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# for the secure client/server support of libvirt as documented at
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# https://libvirt.org/remote.html#Remote_certificates
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#
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# Copyright (C) 2009-2013 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Daniel Veillard <veillard@redhat.com>
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#
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case $1 in
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-h | --h | --he | --hel | --help)
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cat <<EOF
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Usage:
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$0 [OPTION]
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Options:
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-h | --help Display program help
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-V | --version Display program version
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EOF
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exit ;;
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-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
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cat <<EOF
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$0 (libvirt) @VERSION@
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EOF
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exit ;;
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--) shift ;;
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-) # Not an option but an argument; it gets rejected later
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;;
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-*)
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echo "$0: unrecognized option '$1'" >&2
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exit 1 ;;
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esac
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if test $# != 0; then
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echo "$0: unrecognized argument '$1'" >&2
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exit 1
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fi
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USER=`who am i | awk '{ print $1 }'`
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SERVER=1
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CLIENT=1
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PORT=16514
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#
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# First get certtool
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#
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CERTOOL=`which certtool 2>/dev/null`
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if [ ! -x "$CERTOOL" ]
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then
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echo "Could not locate the certtool program"
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echo "make sure the gnutls-utils (or gnutls-bin) package is installed"
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exit 1
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fi
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echo Found "$CERTOOL"
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#
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# Check the directory structure
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#
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SYSCONFDIR="@sysconfdir@"
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PKI="$SYSCONFDIR/pki"
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if [ ! -d "$PKI" ]
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then
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echo the $PKI directory is missing, it is usually
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echo installed as part of the filesystem or openssl packages
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exit 1
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fi
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if [ ! -r "$PKI" ]
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then
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echo the $PKI directory is not readable by $USER
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echo "as root do: chmod a+rx $PKI"
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exit 1
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fi
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if [ ! -x "$PKI" ]
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then
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echo the $PKI directory is not listable by $USER
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echo "as root do: chmod a+rx $PKI"
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exit 1
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fi
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CA="$PKI/CA"
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if [ ! -d "$CA" ]
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then
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echo the $CA directory is missing, it is usually
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echo installed as part of the or openssl package
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exit 1
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fi
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if [ ! -r "$CA" ]
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then
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echo the $CA directory is not readable by $USER
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echo "as root do: chmod a+rx $CA"
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exit 1
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fi
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if [ ! -x "$CA" ]
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then
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echo the $CA directory is not listable by $USER
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echo "as root do: chmod a+rx $CA"
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exit 1
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fi
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LIBVIRT="$PKI/libvirt"
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if [ ! -d "$LIBVIRT" ]
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then
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echo the $LIBVIRT directory is missing, it is usually
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echo installed by the libvirt package
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echo "as root do: mkdir -m 755 $LIBVIRT ; chown root:root $LIBVIRT"
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exit 1
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fi
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if [ ! -r "$LIBVIRT" ]
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then
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echo the $LIBVIRT directory is not readable by $USER
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echo "as root do: chown root:root $LIBVIRT ; chmod 755 $LIBVIRT"
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exit 1
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fi
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if [ ! -x "$LIBVIRT" ]
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then
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echo the $LIBVIRT directory is not listable by $USER
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echo "as root do: chown root:root $LIBVIRT ; chmod 755 $LIBVIRT"
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exit 1
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fi
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LIBVIRTP="$LIBVIRT/private"
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if [ ! -d "$LIBVIRTP" ]
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then
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echo the $LIBVIRTP directory is missing, it is usually
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echo installed by the libvirt package
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echo "as root do: mkdir -m 755 $LIBVIRTP ; chown root:root $LIBVIRTP"
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exit 1
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fi
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if [ ! -r "$LIBVIRTP" ]
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then
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echo the $LIBVIRTP directory is not readable by $USER
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echo "as root do: chown root:root $LIBVIRTP ; chmod 755 $LIBVIRTP"
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exit 1
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fi
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if [ ! -x "$LIBVIRTP" ]
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then
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echo the $LIBVIRTP directory is not listable by $USER
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echo "as root do: chown root:root $LIBVIRTP ; chmod 755 $LIBVIRTP"
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exit 1
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fi
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#
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# Now check the certificates
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# First the CA certificate
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#
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if [ ! -f "$CA/cacert.pem" ]
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then
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echo the CA certificate $CA/cacert.pem is missing while it
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echo should be installed on both client and servers
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echo "see https://libvirt.org/remote.html#Remote_TLS_CA"
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echo on how to install it
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exit 1
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fi
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if [ ! -r "$CA/cacert.pem" ]
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then
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echo the CA certificate $CA/cacert.pem is not readable by $USER
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echo "as root do: chmod 644 $CA/cacert.pem"
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exit 1
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fi
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sed_get_org='/Issuer:/ {
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s/.*Issuer:.*CN=//
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s/,.*//
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p
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}'
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ORG=`"$CERTOOL" -i --infile "$CA/cacert.pem" | sed -n "$sed_get_org"`
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if [ "$ORG" = "" ]
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then
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echo the CA certificate $CA/cacert.pem does not define the organization
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echo it should probably regenerated
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echo "see https://libvirt.org/remote.html#Remote_TLS_CA"
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echo on how to regenerate it
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exit 1
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fi
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echo Found CA certificate $CA/cacert.pem for $ORG
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# Second the client certificates
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if [ -f "$LIBVIRT/clientcert.pem" ]
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then
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if [ ! -r "$LIBVIRT/clientcert.pem" ]
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then
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echo Client certificate $LIBVIRT/clientcert.pem should be world readable
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echo "as root do: chown root:root $LIBVIRT/clientcert.pem ; chmod 644 $LIBVIRT/clientcert.pem"
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else
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C_ORG=`"$CERTOOL" -i --infile "$LIBVIRT/clientcert.pem" | grep Subject: | sed 's+.*O=\([^,]*\).*+\1+'`
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if [ "$ORG" != "$C_ORG" ]
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then
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echo The CA certificate and the client certificate do not match
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echo CA organization: $ORG
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echo Client organization: $C_ORG
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fi
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CLIENT=`"$CERTOOL" -i --infile "$LIBVIRT/clientcert.pem" | grep Subject: | sed 's+.*CN=\(.[^,]*\).*+\1+'`
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echo Found client certificate $LIBVIRT/clientcert.pem for $CLIENT
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if [ ! -e "$LIBVIRTP/clientkey.pem" ]
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then
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echo Missing client private key $LIBVIRTP/clientkey.pem
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else
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echo Found client private key $LIBVIRTP/clientkey.pem
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OWN=`ls -l "$LIBVIRTP/clientkey.pem" | awk '{ print $3 }'`
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# The substr($1, 1, 10) gets rid of acl and xattr markers
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MOD=`ls -l "$LIBVIRTP/clientkey.pem" | awk '{ print substr($1, 1, 10) }'`
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if [ "$OWN" != "root" ]
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then
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echo The client private key should be owned by root
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echo "as root do: chown root $LIBVIRTP/clientkey.pem"
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fi
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if [ "$MOD" != "-rw-r--r--" ]
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then
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echo The client private key need to be read by client tools
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echo "as root do: chmod 644 $LIBVIRTP/clientkey.pem"
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fi
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fi
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fi
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else
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echo Did not find "$LIBVIRT/clientcert.pem" client certificate
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echo The machine cannot act as a client
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echo "see https://libvirt.org/remote.html#Remote_TLS_client_certificates"
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echo on how to regenerate it
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CLIENT=0
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fi
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# Third the server certificates
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if [ -f "$LIBVIRT/servercert.pem" ]
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then
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if [ ! -r "$LIBVIRT/servercert.pem" ]
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then
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echo Server certificate $LIBVIRT/servercert.pem should be world readable
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echo "as root do: chown root:root $LIBVIRT/servercert.pem ; chmod 644 $LIBVIRT/servercert.pem"
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else
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S_ORG=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*O=\([^,]*\).*+\1+'`
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if [ "$ORG" != "$S_ORG" ]
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then
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echo The CA certificate and the server certificate do not match
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echo CA organization: $ORG
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echo Server organization: $S_ORG
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fi
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S_HOST=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*CN=\([^,]*\).*+\1+'`
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if test "$S_HOST" != "`hostname -s`" && test "$S_HOST" != "`hostname`"
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then
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echo The server certificate does not seem to match the host name
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echo hostname: '"'`hostname`'"'
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echo Server certificate CN: '"'$S_HOST'"'
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fi
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echo Found server certificate $LIBVIRT/servercert.pem for $S_HOST
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if [ ! -e "$LIBVIRTP/serverkey.pem" ]
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then
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echo Missing server private key $LIBVIRTP/serverkey.pem
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else
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echo Found server private key $LIBVIRTP/serverkey.pem
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OWN=`ls -l "$LIBVIRTP/serverkey.pem" | awk '{ print $3 }'`
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# The substr($1, 1, 10) gets rid of acl and xattr markers
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MOD=`ls -l "$LIBVIRTP/serverkey.pem" | awk '{ print substr($1, 1, 10) }'`
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if [ "$OWN" != "root" ]
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then
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echo The server private key should be owned by root
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echo "as root do: chown root $LIBVIRTP/serverkey.pem"
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fi
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if [ "$MOD" != "-rw-------" ]
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then
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echo The server private key need to be read only by root
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echo "as root do: chmod 600 $LIBVIRTP/serverkey.pem"
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fi
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fi
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fi
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else
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echo Did not find $LIBVIRT/servercert.pem server certificate
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echo The machine cannot act as a server
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echo "see https://libvirt.org/remote.html#Remote_TLS_server_certificates"
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echo on how to regenerate it
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SERVER=0
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fi
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if [ "$SERVER" = "1" ]
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then
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if [ -r "$SYSCONFDIR"/sysconfig/libvirtd ]
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then
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if grep "^LIBVIRTD_ARGS.*--listen" "$SYSCONFDIR"/sysconfig/libvirtd \
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>/dev/null 2>&1
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then
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:
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else
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echo Make sure "$SYSCONFDIR"/sysconfig/libvirtd is setup to listen to
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echo TCP/IP connections and restart the libvirtd service
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fi
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fi
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if [ -r "$SYSCONFDIR"/sysconfig/iptables ]
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then
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if grep "$PORT" "$SYSCONFDIR"/sysconfig/iptables >/dev/null 2>&1
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then
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:
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else
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echo Make sure "$SYSCONFDIR"/sysconfig/iptables is setup to allow
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echo incoming TCP/IP connections on port $PORT and
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echo restart the iptables service
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fi
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fi
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fi
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exit 0
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