[PATCH 14/16] virnwfilterobj: Add virNWFilterObjSetMetadata()

[K Shiva Kiran <shiva_kr@xxxxxxxxxx>]

Signed-off-by: K Shiva Kiran <shiva_kr@xxxxxxxxxx>
---
 src/conf/virnwfilterobj.c | 102 ++++++++++++++++++++++++++++++++++++++
 src/conf/virnwfilterobj.h |   8 +++
 src/libvirt_private.syms  |   1 +
 3 files changed, 111 insertions(+)

diff --git a/src/conf/virnwfilterobj.c b/src/conf/virnwfilterobj.c
index eab864fe2e..437df9631b 100644
--- a/src/conf/virnwfilterobj.c
+++ b/src/conf/virnwfilterobj.c
@@ -681,3 +681,105 @@ virNWFilterObjGetMetadata(virNWFilterObj *obj,
 
     return ret;
 }
+
+
+static int
+virNWFilterDefSetMetadata(virNWFilterDef *def,
+                          int type,
+                          const char *metadata,
+                          const char *key,
+                          const char *uri)
+{
+    g_autoptr(xmlDoc) doc = NULL;
+    xmlNodePtr old;
+    g_autoptr(xmlNode) new = NULL;
+
+    if (type >= VIR_NWFILTER_METADATA_LAST) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("unknown metadata type '%1$d'"), type);
+        return -1;
+    }
+
+    switch ((virNWFilterMetadataType) type) {
+    case VIR_NWFILTER_METADATA_DESCRIPTION:
+        g_clear_pointer(&def->description, g_free);
+
+        if (STRNEQ_NULLABLE(metadata, ""))
+            def->description = g_strdup(metadata);
+        break;
+
+    case VIR_NWFILTER_METADATA_TITLE:
+        g_clear_pointer(&def->title, g_free);
+
+        if (STRNEQ_NULLABLE(metadata, ""))
+            def->title = g_strdup(metadata);
+        break;
+
+    case VIR_NWFILTER_METADATA_ELEMENT:
+        if (metadata) {
+
+            /* parse and modify the xml from the user */
+            if (!(doc = virXMLParseStringCtxt(metadata, _("(metadata_xml)"), NULL)))
+                return -1;
+
+            if (virXMLInjectNamespace(doc->children, uri, key) < 0)
+                return -1;
+
+            /* create the root node if needed */
+            if (!def->metadata)
+                def->metadata = virXMLNewNode(NULL, "metadata");
+
+            if (!(new = xmlCopyNode(doc->children, 1))) {
+                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                               _("Failed to copy XML node"));
+                return -1;
+            }
+        }
+
+        /* remove possible other nodes sharing the namespace */
+        while ((old = virXMLFindChildNodeByNs(def->metadata, uri))) {
+            xmlUnlinkNode(old);
+            xmlFreeNode(old);
+        }
+
+        if (new) {
+            if (!(xmlAddChild(def->metadata, new))) {
+                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                               _("failed to add metadata to XML document"));
+                return -1;
+            }
+            new = NULL;
+        }
+        break;
+
+    case VIR_NWFILTER_METADATA_LAST:
+        break;
+    }
+
+    return 0;
+}
+
+
+int
+virNWFilterObjSetMetadata(virNWFilterObj *obj,
+                          int type,
+                          const char *metadata,
+                          const char *key,
+                          const char *uri,
+                          const char *configDir)
+{
+    virNWFilterDef *def;
+
+    if (!(def = virNWFilterObjGetDef(obj)))
+        return -1;
+
+    if (def) {
+        if (virNWFilterDefSetMetadata(def, type, metadata, key, uri) < 0)
+            return -1;
+
+        if (virNWFilterSaveConfig(configDir, def) < 0)
+            return -1;
+    }
+
+    return 0;
+}
diff --git a/src/conf/virnwfilterobj.h b/src/conf/virnwfilterobj.h
index dd4dd63cee..4079c0ab3d 100644
--- a/src/conf/virnwfilterobj.h
+++ b/src/conf/virnwfilterobj.h
@@ -122,3 +122,11 @@ char *
 virNWFilterObjGetMetadata(virNWFilterObj *obj,
                           int type,
                           const char *uri);
+
+int
+virNWFilterObjSetMetadata(virNWFilterObj *obj,
+                          int type,
+                          const char *metadata,
+                          const char *key,
+                          const char *uri,
+                          const char *configDir);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 8c4983ae17..628723f06d 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1422,6 +1422,7 @@ virNWFilterObjListNew;
 virNWFilterObjListNumOfNWFilters;
 virNWFilterObjListRemove;
 virNWFilterObjLock;
+virNWFilterObjSetMetadata;
 virNWFilterObjTestUnassignDef;
 virNWFilterObjUnlock;
 virNWFilterObjWantRemoved;
-- 
2.42.0