introduce API functions for duplicating the DNSPARSER record types

1 files changed, 116 insertions, 0 deletions

diff --git a/src/util/dnsparser.c b/src/util/dnsparser.c
index cce68f2ee..57d0a014c 100644
--- a/src/util/dnsparser.c
+++ b/src/util/dnsparser.c
@@ -759,6 +759,122 @@ GNUNET_DNSPARSER_parse (const char *udp_payload,
 
 
 /**
+ * Duplicate (deep-copy) the given DNS record
+ *
+ * @param r the record
+ * @return the newly allocated record
+ */
+struct GNUNET_DNSPARSER_Record *
+GNUNET_DNSPARSER_duplicate_record (const struct GNUNET_DNSPARSER_Record *r)
+{
+  struct GNUNET_DNSPARSER_Record *dup = GNUNET_memdup (r, sizeof (*r));
+
+  dup->name = GNUNET_strdup (r->name);
+  switch (r->type)
+  {
+    case GNUNET_DNSPARSER_TYPE_NS:
+    case GNUNET_DNSPARSER_TYPE_CNAME:
+    case GNUNET_DNSPARSER_TYPE_PTR:
+    {
+      dup->data.hostname = GNUNET_strdup (r->data.hostname);
+      break;
+    }
+    case GNUNET_DNSPARSER_TYPE_SOA:
+    {
+      dup->data.soa = GNUNET_DNSPARSER_duplicate_soa_record (r->data.soa);
+      break;
+    }
+    case GNUNET_DNSPARSER_TYPE_CERT:
+    {
+      dup->data.cert = GNUNET_DNSPARSER_duplicate_cert_record (r->data.cert);
+      break;
+    }
+    case GNUNET_DNSPARSER_TYPE_MX:
+    {
+      dup->data.mx = GNUNET_DNSPARSER_duplicate_mx_record (r->data.mx);
+      break;
+    }
+    case GNUNET_DNSPARSER_TYPE_SRV:
+    {
+      dup->data.srv = GNUNET_DNSPARSER_duplicate_srv_record (r->data.srv);
+      break;
+    }
+    default:
+    {
+      dup->data.raw.data = GNUNET_memdup (r->data.raw.data,
+                                          r->data.raw.data_len);
+    }
+  }
+  return dup;
+}
+
+
+/**
+ * Duplicate (deep-copy) the given DNS record
+ *
+ * @param r the record
+ * @return the newly allocated record
+ */
+struct GNUNET_DNSPARSER_SoaRecord *
+GNUNET_DNSPARSER_duplicate_soa_record (const struct GNUNET_DNSPARSER_SoaRecord *r)
+{
+  struct GNUNET_DNSPARSER_SoaRecord *dup = GNUNET_memdup (r, sizeof (*r));
+
+  dup->mname = GNUNET_strdup (r->mname);
+  dup->rname = GNUNET_strdup (r->rname);
+  return dup;
+}
+
+
+/**
+ * Duplicate (deep-copy) the given DNS record
+ *
+ * @param r the record
+ * @return the newly allocated record
+ */
+struct GNUNET_DNSPARSER_CertRecord *
+GNUNET_DNSPARSER_duplicate_cert_record (const struct GNUNET_DNSPARSER_CertRecord *r)
+{
+  struct GNUNET_DNSPARSER_CertRecord *dup = GNUNET_memdup (r, sizeof (*r));
+
+  dup->certificate_data = GNUNET_strdup (r->certificate_data);
+  return dup;
+}
+
+
+/**
+ * Duplicate (deep-copy) the given DNS record
+ *
+ * @param r the record
+ * @return the newly allocated record
+ */
+struct GNUNET_DNSPARSER_MxRecord *
+GNUNET_DNSPARSER_duplicate_mx_record (const struct GNUNET_DNSPARSER_MxRecord *r)
+{
+  struct GNUNET_DNSPARSER_MxRecord *dup = GNUNET_memdup (r, sizeof (*r));
+
+  dup->mxhost = GNUNET_strdup (r->mxhost);
+  return dup;
+}
+
+
+/**
+ * Duplicate (deep-copy) the given DNS record
+ *
+ * @param r the record
+ * @return the newly allocated record
+ */
+struct GNUNET_DNSPARSER_SrvRecord *
+GNUNET_DNSPARSER_duplicate_srv_record (const struct GNUNET_DNSPARSER_SrvRecord *r)
+{
+  struct GNUNET_DNSPARSER_SrvRecord *dup = GNUNET_memdup (r, sizeof (*r));
+
+  dup->target = GNUNET_strdup (r->target);
+  return dup;
+}
+
+
+/**
  * Free memory taken by a packet.
  *
  * @param p packet to free