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https://gitlab.com/libvirt/libvirt.git
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314 lines
8.6 KiB
Bash
Executable File
314 lines
8.6 KiB
Bash
Executable File
#!/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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# http://libvirt.org/remote.html#Remote_certificates
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#
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# Daniel Veillard <veillard@redhat.com>
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#
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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 package is installed
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exit 1
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fi
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echo Found $CERTOOL
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#
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# Check the directory structure
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#
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PKI="$(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 http://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 $CA/cacert.pem"
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exit 1
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fi
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ORG=`$CERTOOL -i --infile $CA/cacert.pem | grep Issuer | sed 's+Issuer: CN=++'`
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if [ "$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 http://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 $LIBVIRT/clientcert.pem"
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else
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S_ORG=`$CERTOOL -i --infile $LIBVIRT/clientcert.pem | grep Subject: | sed 's+.*O=\([a-zA-Z \._-]*\).*+\1+'`
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if [ "$ORG" != "$S_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: $S_ORG
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fi
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CLIENT=`$CERTOOL -i --infile $LIBVIRT/clientcert.pem | grep Subject: | sed 's+.*CN=\(.[a-zA-Z \._-]*\).*+\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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MOD=`ls -l $LIBVIRTP/clientkey.pem | awk '{ print $1 }'`
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if [ "$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 found $LIBVIRT/clientcert.pem client certificate
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echo The machine cannot act as a client
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echo "see http://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=\([a-zA-Z\. _-]*\).*+\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=\([a-zA-Z\. _-]*\)+\1+'`
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if [ "$S_HOST" != "`hostname -s`" -a "$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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MOD=`ls -l $LIBVIRTP/serverkey.pem | awk '{ print $1 }'`
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if [ "$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 found $LIBVIRT/servercert.pem server certificate
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echo The machine cannot act as a server
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echo "see http://libvirt.org/remote.html#Remote_TLS_server_certificates"
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echo on how to regenerate it
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SERVER=0
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fi
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if [ "$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' $(SYSCONFDIR)/sysconfig/libvirtd | grep -- '--listen'`" = "" ]
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then
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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`" = "" ]
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then
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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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: <<=cut
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=pod
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=head1 NAME
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virt-pki-validate - validate libvirt PKI files are configured correctly
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=head1 SYNOPSIS
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virt-pki-validate
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=head1 DESCRIPTION
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This tool validates that the necessary PKI files are configured for
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a secure libvirt server or client using the TLS encryption protocol.
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It will report any missing certificate or key files on the host. It
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should be run as root to ensure it can read all the necessary files
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=head1 EXIT STATUS
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Upon successful validation, an exit status of 0 will be set. Upon
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failure a non-zero status will be set.
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=head1 AUTHOR
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Richard Jones
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=head1 BUGS
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Report any bugs discovered to the libvirt community via the
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mailing list C<http://libvirt.org/contact.html> or bug tracker C<http://libvirt.org/bugs.html>.
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Alternatively report bugs to your software distributor / vendor.
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=head1 COPYRIGHT
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Copyright 2006-2009 by Red Hat, Inc
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=head1 LICENSE
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virt-pki-validate is distributed under the terms of the GNU GPL v2+.
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This is free software; see the source for copying conditions. There
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is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE
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=head1 SEE ALSO
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C<virsh(1)>, online PKI setup instructions C<http://libvirt.org/remote.html>
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=cut
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