[Ovirt-devel] [PATCH] set ldap.yml from dns srv during ovirt-wui-install

[Perry N. Myers]

Doing the DNS SRV lookup from Ruby directly is where we want to be (and 
with Darryl's patches we're almost there) but I decided it wouldn't hurt 
to edit ldap.yml as part of the install.  dig is used to look up the srv 
record and then if one is found, ldap.yml is edited.

I've tested this and verified that it does set the yml file correctly, but 
even with that set correctly I still can't get the grant_admin_privileges 
   to work properly.

Signed-off-by: Perry Myers <pmyers at redhat.com>

diff --git a/wui/scripts/ovirt-wui-install b/wui/scripts/ovirt-wui-install
index e0cbbc0..f0f8b3e 100755
--- a/wui/scripts/ovirt-wui-install
+++ b/wui/scripts/ovirt-wui-install
@@ -11,6 +11,7 @@ PW_FILE=${OVIRT_CFG}/db/dbaccess
 STEP_TICKER=0.fedora.pool.ntp.org
 STEP_FILE=/etc/ntp/step-tickers
 SASL_FILE=/etc/sasl2/libvirt.conf
+LDAP_CFG=${OVIRT_DIR}/config/ldap.yml
 
 DISABLE_SVCS="libvirtd" 
 ENABLE_SVCS="ntpd httpd postgresql ovirt-host-browser ovirt-host-status \
@@ -23,6 +24,17 @@ usage() {
     exit 1
 } >&2
 
+find_srv() {
+    local dnsreply
+    dnsreply=$(dig +short -t srv _$1._$2.$(dnsdomainname))
+    if [ $? -eq 0 ]; then
+        set _ $dnsreply; shift
+        SRV_HOST=$4; SRV_PORT=$3
+    else
+        SRV_HOST=; SRV_PORT=
+    fi
+}
+
 PASSWD=
 for i ; do
     case $1 in
@@ -46,6 +58,18 @@ for svc in $ENABLE_SVCS ; do
 done
 } > /dev/null 2>&1
 
+# grab ldap server from DNS
+find_srv ldap tcp
+if [ -n "$SRV_HOST" -a -n "$SRV_PORT" ]; then
+    SRV_HOST=${SRV_HOST%.}
+    SRV_BASE=$(echo $SRV_HOST | awk -F. '{ for(i=2; i <= NF; i++) { printf("dc=%s", $(i)); if(i<NF) printf(","); } }')
+    
+    sed -i -e "s/host: .*/host: $SRV_HOST/g" \
+        -e "s/port: .*/port: $SRV_PORT/g" \
+        -e "s/base: .*/base: $SRV_BASE/g" \
+        $LDAP_CFG
+fi
+
 # setup an NTP step-ticker
 if [ -f $STEP_FILE ]; then
     if ! grep "^$${STEP_TICKER}$" $STEP_FILE > /dev/null 2>&1 ; then