Replace token test in configure.sh with server reachability checks

Instead of obtaining a Nextcloud WebDAV token, verify the configured
servers directly:
- Nextcloud: check /status.php for "installed":true and show version
- FreeIPA: check /ipa/session/json for HTTP 200 or 401

Both checks offer restart or quit on failure.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

system_setup/configure.sh

@@ -52,7 +52,7 @@ do_configure() {
     echo ""
 
     source "$CONF_FILE"
-    VARS=("TLDOMAIN" "DOMAIN" "SERVERFQDN_IPA" "SERVERFQDN_NC" "CLIENTADMINGROUP" )
+    VARS=("TLDOMAIN" "DOMAIN" "SERVERFQDN_IPA" "SERVERFQDN_NC" "CLIENTADMINGROUP" "IPAVAULTUSE" )
     for ELE in "${VARS[@]}"
     do
         new_ELE=$(prompt_value "${ELE}" "${!ELE}")
@@ -67,35 +67,41 @@ do_configure() {
 while true; do
     do_configure
 
-    # Load setup_system.inc.sh (which re-sources configure.conf and defines all functions).
-    # shellcheck disable=SC1090
-    source "${SCRIPTDIR}/setup_system.inc.sh"
-
     echo ""
-    echo "=== Testing: obtaining Nextcloud WebDAV token ==="
-    while true; do
-        # This makes the Token only available for this session, not written to disk
-        unset DAVTOKENFILENAME
-        #Sets a temporay Hostname for the Token
-        export HOSTNM="OEMDRV_TEST_TOKEN"
-        get_nc_token
-        current_user="$(id -un)"
-        if [[ "${DAVTOKEN_USER}" == "${current_user}" ]]; then
-            echo "Token obtained successfully for user '${DAVTOKEN_USER}'."
-            break
-        fi
+    echo "=== Testing: Nextcloud server ==="
+    NC_STATUS=$(curl -fsSL "https://${SERVERFQDN_NC}/status.php" 2>/dev/null)
+    if echo "$NC_STATUS" | grep -q '"installed":true'; then
+        NC_VERSION=$(echo "$NC_STATUS" | grep -oP '(?<="versionstring":")[^"]+')
+        echo "Nextcloud confirmed at ${SERVERFQDN_NC} (version ${NC_VERSION})."
+    else
         echo ""
-        if [[ -z "${DAVTOKEN_USER}" ]]; then
-            echo "Token could not be obtained (DAVTOKEN_USER is empty)."
-        else
-            echo "Token user '${DAVTOKEN_USER}' does not match current user '${current_user}'."
-        fi
-        read -rp "Retry get_nc_token (r) or quit (q)? [r/q]: " ans
+        echo "WARNING: '${SERVERFQDN_NC}' does not appear to be a valid Nextcloud server."
+        echo "         Could not reach https://${SERVERFQDN_NC}/status.php or response was unexpected."
+        read -rp "Start configuration again (a) or quit (q)? [a/q]: " ans
         if [[ "${ans,,}" == "q" ]]; then
             echo "Quitting."
             exit 1
         fi
-    done
+        continue
+    fi
+
+    echo ""
+    echo "=== Testing: FreeIPA server ==="
+    IPA_CODE=$(curl -s -o /dev/null -w "%{http_code}" \
+        "https://${SERVERFQDN_IPA}/ipa/session/json" 2>/dev/null)
+    if [[ "$IPA_CODE" == "200" || "$IPA_CODE" == "401" ]]; then
+        echo "FreeIPA server confirmed at ${SERVERFQDN_IPA}."
+    else
+        echo ""
+        echo "WARNING: '${SERVERFQDN_IPA}' does not appear to be a valid FreeIPA server."
+        echo "         https://${SERVERFQDN_IPA}/ipa/session/json returned: ${IPA_CODE:-no response}"
+        read -rp "Start configuration again (a) or quit (q)? [a/q]: " ans
+        if [[ "${ans,,}" == "q" ]]; then
+            echo "Quitting."
+            exit 1
+        fi
+        continue
+    fi
 
     echo ""
     echo "=== Configuration complete ==="