From baf9b5d76c4b40d6bd2869525656ad298ead7726 Mon Sep 17 00:00:00 2001
From: "Schanzenbach, Martin" <mschanzenbach@posteo.de>
Date: Thu, 29 Dec 2016 15:48:43 +0100
Subject: -add tokens for credentials

---
 src/credential/credential_serialization.c  |  4 ++--
 src/credential/gnunet-service-credential.c | 30 ++++++++++++++++++++++++++++--
 2 files changed, 30 insertions(+), 4 deletions(-)

(limited to 'src/credential')

diff --git a/src/credential/credential_serialization.c b/src/credential/credential_serialization.c
index 76bf491c9..1fc72c203 100644
--- a/src/credential/credential_serialization.c
+++ b/src/credential/credential_serialization.c
@@ -192,7 +192,7 @@ GNUNET_CREDENTIAL_credentials_serialize (unsigned int c_count,
     c_rec.signature = cd[i].signature;
     c_rec.purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_CREDENTIAL);
     c_rec.purpose.size = htonl ((sizeof (struct CredentialEntry) + cd[i].issuer_attribute_len) - sizeof (struct GNUNET_CRYPTO_EcdsaSignature));
-    c_rec.expiration = htonl ((uint32_t) cd[i].expiration.abs_value_us);
+    c_rec.expiration = GNUNET_htonll (cd[i].expiration.abs_value_us);
     if (off + sizeof (c_rec) > dest_size)
       return -1;
     GNUNET_memcpy (&dest[off],
@@ -241,7 +241,7 @@ GNUNET_CREDENTIAL_credentials_deserialize (size_t len,
     cd[i].issuer_key = c_rec.issuer_key;
     cd[i].subject_key = c_rec.subject_key;
     cd[i].signature = c_rec.signature;
-    cd[i].expiration.abs_value_us = ntohl((uint32_t) c_rec.expiration);
+    cd[i].expiration.abs_value_us = GNUNET_ntohll(c_rec.expiration);
     off += sizeof (c_rec);
     if (off + cd[i].issuer_attribute_len > len)
       return GNUNET_SYSERR;
diff --git a/src/credential/gnunet-service-credential.c b/src/credential/gnunet-service-credential.c
index ec89da323..75ed6d5da 100644
--- a/src/credential/gnunet-service-credential.c
+++ b/src/credential/gnunet-service-credential.c
@@ -92,7 +92,11 @@ struct CredentialRecordEntry
    * DLL
    */
   struct CredentialRecordEntry *prev;
-
+  
+  /**
+   * Number of references in delegation chains
+   */
+  uint32_t refcount;
 
   /**
    * Payload
@@ -485,6 +489,7 @@ send_lookup_response (struct VerifyRequestHandle *vrh)
   struct GNUNET_CREDENTIAL_Delegation dd[vrh->delegation_chain_size];
   struct GNUNET_CREDENTIAL_Credential cred[vrh->cred_chain_size];
   struct CredentialRecordEntry *cd;
+  struct CredentialRecordEntry *tmp;
   size_t size;
   int i;
 
@@ -507,6 +512,26 @@ send_lookup_response (struct VerifyRequestHandle *vrh)
     dce = dce->next;
   }
 
+  /**
+   * Remove all credentials not needed
+   */
+  for (cd = vrh->cred_chain_head; NULL != cd;)
+  {
+    if (cd->refcount > 0)
+    {
+      cd = cd->next;
+      continue;
+    }
+    tmp = cd;
+    cd = cd->next;
+    GNUNET_CONTAINER_DLL_remove (vrh->cred_chain_head,
+                                 vrh->cred_chain_tail,
+                                 tmp);
+    GNUNET_free (tmp->credential);
+    GNUNET_free (tmp);
+    vrh->cred_chain_size--;
+  }
+
   /**
    * Get serialized record data
    * Append at the end of rmsg
@@ -681,7 +706,7 @@ backward_resolution (void* cls,
 
         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                     "Found issuer\n");
-
+        cred_pointer->refcount++;
         //Backtrack
         for (tmp_set = ds_entry;
              NULL != tmp_set->parent_queue_entry;
@@ -796,6 +821,7 @@ delegation_chain_resolution_start (void* cls)
       continue;
     if (0 != strcmp (cr_entry->credential->issuer_attribute, vrh->issuer_attribute))
       continue;
+    cr_entry->refcount++;
     //Found match prematurely
     send_lookup_response (vrh);
     return;
-- 
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