From: Matthias Wachs <wachs@net.in.tum.de>
Date: Fri, 24 Feb 2012 17:05:33 +0000 (+0000)
Subject: - lookup API send recv
X-Git-Tag: initial-import-from-subversion-38251~14654
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=95c9e40b4153361d1e6e45f99659759a8f0f14de;p=oweals%2Fgnunet.git

- lookup API send recv
---

diff --git a/src/namestore/gnunet-service-namestore.c b/src/namestore/gnunet-service-namestore.c
index 58830b304..e4f7a2b37 100644
--- a/src/namestore/gnunet-service-namestore.c
+++ b/src/namestore/gnunet-service-namestore.c
@@ -93,18 +93,21 @@ cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 
   struct GNUNET_NAMESTORE_Operation * no;
   struct GNUNET_NAMESTORE_Client * nc;
+  struct GNUNET_NAMESTORE_Client * next;
 
-  for (nc = client_head; nc != NULL; nc = nc->next)
+  for (nc = client_head; nc != NULL; nc = next)
   {
+    next = nc->next;
     for (no = nc->op_head; no != NULL; no = no->next)
     {
       GNUNET_CONTAINER_DLL_remove (nc->op_head, nc->op_tail, no);
       GNUNET_free (no);
     }
-  }
 
-  GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
-  GNUNET_free (nc);
+    GNUNET_CONTAINER_DLL_remove (client_head, client_tail, nc);
+    GNUNET_free (nc);
+
+  }
 
   GNUNET_SERVER_notification_context_destroy (snc);
   snc = NULL;
@@ -175,15 +178,139 @@ static void handle_start (void *cls,
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
+struct LookupNameContext
+{
+  struct GNUNET_NAMESTORE_Client *nc;
+  uint32_t id;
+  uint32_t record_type;
+};
+
+
+static void
+handle_lookup_name_it (void *cls,
+    const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key,
+    struct GNUNET_TIME_Absolute expire,
+    const char *name,
+    unsigned int rd_count,
+    const struct GNUNET_NAMESTORE_RecordData *rd,
+    const struct GNUNET_CRYPTO_RsaSignature *signature)
+{
+  /* send response */
+  struct LookupNameContext *lnc = cls;
+  struct LookupNameResponseMessage *lnr_msg;
+
+  struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key_tmp;
+  struct GNUNET_NAMESTORE_RecordData * rd_tmp;
+  char *name_tmp;
+  struct GNUNET_CRYPTO_RsaSignature *signature_tmp;
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
+
+  size_t r_size = 0;
+
+  size_t name_len = 0;
+  if (NULL != name)
+    name_len = strlen(name) + 1;
+
+  int copied_elements = 0;
+  int contains_signature = 0;
+  int c;
+
+  /* count records to copy */
+  if (rd_count != 0)
+  {
+    if (lnc->record_type != 0)
+    {
+      /* special record type needed */
+      for (c = 0; c < rd_count; c ++)
+        if (rd[c].record_type == lnc->record_type)
+          copied_elements++; /* found matching record */
+    }
+    else
+      copied_elements = rd_count;
+  }
+
+  if ((copied_elements == rd_count) && (signature != NULL))
+      contains_signature = GNUNET_YES;
+
+  r_size = sizeof (struct LookupNameResponseMessage) +
+           sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
+           name_len +
+           copied_elements * sizeof (struct GNUNET_NAMESTORE_RecordData) +
+           contains_signature * sizeof (struct GNUNET_CRYPTO_RsaSignature);
+
+  lnr_msg = GNUNET_malloc (r_size);
+
+  lnr_msg->header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
+  lnr_msg->header.size = ntohs (r_size);
+  lnr_msg->op_id = htonl (lnc->id);
+  lnr_msg->rc_count = htonl (copied_elements);
+  lnr_msg->name_len = htons (name_len);
+  lnr_msg->expire = GNUNET_TIME_absolute_hton(expire);
+  lnr_msg->contains_sig = htons (contains_signature);
+
+
+  zone_key_tmp =  (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &lnr_msg[1];
+  name_tmp = (char *) &zone_key_tmp[1];
+  rd_tmp = (struct GNUNET_NAMESTORE_RecordData *) &name_tmp[name_len];
+  signature_tmp = (struct GNUNET_CRYPTO_RsaSignature *) &rd_tmp[copied_elements];
+
+  if (zone_key != NULL)
+    memcpy (zone_key_tmp, zone_key, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
+  else
+  {
+    struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded dummy;
+    memset (&dummy, '0', sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
+    memcpy (zone_key_tmp, &dummy, sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
+  }
+  memcpy (name_tmp, name, name_len);
+  /* copy records */
+  copied_elements = 0;
+  if (rd_count != 0)
+  {
+    if (lnc->record_type != 0)
+    {
+      /* special record type needed */
+      for (c = 0; c < rd_count; c ++)
+        if (rd[c].record_type == lnc->record_type)
+        {
+          /* found matching record */
+          memcpy (&rd_tmp[copied_elements], &rd[c], rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
+          copied_elements++;
+        }
+    }
+    else
+      memcpy (rd_tmp, rd, rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData));
+  }
+
+  if (GNUNET_YES == contains_signature)
+    memcpy (signature_tmp, signature, sizeof (struct GNUNET_CRYPTO_RsaSignature));
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "DONE `%s' message\n", "NAMESTORE_LOOKUP_NAME_RESPONSE");
+  GNUNET_SERVER_notification_context_unicast (snc, lnc->nc->client, (const struct GNUNET_MessageHeader *) lnr_msg, GNUNET_NO);
+
+  GNUNET_free (lnr_msg);
+}
+
 static void handle_lookup_name (void *cls,
                           struct GNUNET_SERVER_Client * client,
                           const struct GNUNET_MessageHeader * message)
 {
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received `%s' message\n", "NAMESTORE_LOOKUP_NAME");
-
+  struct LookupNameContext lnc;
   struct GNUNET_NAMESTORE_Client *nc;
+  GNUNET_HashCode name_hash;
+  size_t name_len;
+  char * name;
   uint32_t id = 0;
-  size_t r_size = 0;
+  uint32_t type = 0;
+
+
+  if (ntohs (message->size) < sizeof (struct LookupNameMessage))
+  {
+    GNUNET_break_op (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }
 
   nc = client_lookup(client);
   if (nc == NULL)
@@ -195,18 +322,28 @@ static void handle_lookup_name (void *cls,
 
   struct LookupNameMessage * ln_msg = (struct LookupNameMessage *) message;
   id = ntohl (ln_msg->op_id);
+  name_len = ntohl (ln_msg->name_len);
+  type = ntohl (ln_msg->record_type);
 
-  /* do the actual lookup */
+  if ((name_len == 0) || (name_len > 256))
+  {
+    GNUNET_break_op (0);
+    GNUNET_SERVER_receive_done (client, GNUNET_OK);
+    return;
+  }
 
-  /* send response */
-  struct LookupNameResponseMessage lnr_msg;
-  r_size = sizeof (struct LookupNameResponseMessage);
+  name = GNUNET_malloc (name_len);
+  memcpy (name, &ln_msg[1], name_len);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking up record for name `%s'\n", name);
+  GNUNET_CRYPTO_hash(name, name_len-1, &name_hash);
+  GNUNET_free (name);
 
-  lnr_msg.header.type = ntohs (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE);
-  lnr_msg.header.size = ntohs (r_size);
-  lnr_msg.op_id = htonl (id);
+  /* do the actual lookup */
+  lnc.id = id;
+  lnc.nc = nc;
+  lnc.record_type = type;
+  GSN_database->iterate_records(GSN_database->cls, &ln_msg->zone, &ln_msg->zone, 0, &handle_lookup_name_it, &lnc);
 
-  GNUNET_SERVER_notification_context_unicast (snc, nc->client, (const struct GNUNET_MessageHeader *) &lnr_msg, GNUNET_NO);
   GNUNET_SERVER_receive_done (client, GNUNET_OK);
 }
 
@@ -230,7 +367,7 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
     {&handle_start, NULL,
      GNUNET_MESSAGE_TYPE_NAMESTORE_START, sizeof (struct StartMessage)},
     {&handle_lookup_name, NULL,
-     GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, sizeof (struct LookupNameMessage)},
+     GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME, 0},
     {NULL, NULL, 0, 0}
   };
 
diff --git a/src/namestore/namestore.h b/src/namestore/namestore.h
index 27d36d78b..143f233d4 100644
--- a/src/namestore/namestore.h
+++ b/src/namestore/namestore.h
@@ -66,6 +66,8 @@ struct GenericMessage
 };
 GNUNET_NETWORK_STRUCT_END
 
+
+
 GNUNET_NETWORK_STRUCT_BEGIN
 /**
  * Connect to namestore service
@@ -81,11 +83,28 @@ struct LookupNameMessage
    * Operation ID in NBO
    */
   uint32_t op_id;
+
+  /* The zone */
+  GNUNET_HashCode zone;
+
+  /* Requested record type */
+  uint32_t record_type;
+
+  /* Requested record type */
+  uint32_t name_len;
 };
 GNUNET_NETWORK_STRUCT_END
 
+
+
 GNUNET_NETWORK_STRUCT_BEGIN
 
+/**
+ * Lookup response
+ * Memory layout:
+ * [struct LookupNameResponseMessage][struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded][char *name][rc_count * struct GNUNET_NAMESTORE_RecordData][struct GNUNET_CRYPTO_RsaSignature]
+ */
+
 struct LookupNameResponseMessage
 {
   /**
@@ -97,6 +116,15 @@ struct LookupNameResponseMessage
    * Operation ID in NBO
    */
   uint32_t op_id;
+
+  struct GNUNET_TIME_AbsoluteNBO expire;
+
+  uint16_t name_len;
+
+  uint16_t contains_sig;
+
+  /* Requested record type */
+  uint32_t rc_count;
 };
 
 
diff --git a/src/namestore/namestore_api.c b/src/namestore/namestore_api.c
index 0e269f4aa..811c0b2d0 100644
--- a/src/namestore/namestore_api.c
+++ b/src/namestore/namestore_api.c
@@ -196,23 +196,59 @@ handle_lookup_name_response (struct GNUNET_NAMESTORE_QueueEntry *qe,
               "LOOKUP_NAME_RESPONSE");
 
   struct GNUNET_NAMESTORE_Handle *nsh = qe->nsh;
-
-  struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key = NULL;
-  struct GNUNET_TIME_Absolute expire = GNUNET_TIME_absolute_get_forever();
-  const char *name = "";
+  struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *zone_key;
+  char *name;
+  struct GNUNET_NAMESTORE_RecordData *rd = NULL;
+  struct GNUNET_CRYPTO_RsaSignature *signature = NULL;
+  struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded dummy;
+  struct GNUNET_TIME_Absolute expire;
   unsigned int rd_count = 0;
-  const struct GNUNET_NAMESTORE_RecordData *rd = NULL;
-  const struct GNUNET_CRYPTO_RsaSignature *signature = NULL;
+  size_t msg_len = 0;
+  size_t name_len = 0;
+  int contains_sig = GNUNET_NO;
+
+  rd_count = ntohl (msg->rc_count);
+  msg_len = ntohs (msg->header.size);
+  name_len = ntohs (msg->name_len);
+  contains_sig = ntohs (msg->contains_sig);
+  expire = GNUNET_TIME_absolute_ntoh(msg->expire);
+
+  if (msg_len != sizeof (struct LookupNameResponseMessage) +
+      sizeof (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded) +
+      name_len +
+      rd_count * sizeof (struct GNUNET_NAMESTORE_RecordData) +
+      contains_sig * sizeof (struct GNUNET_CRYPTO_RsaSignature))
+  {
+    GNUNET_break_op (0);
+    return;
+  }
+
+  zone_key = (struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *) &msg[1];
+  name = (char *) &zone_key[1];
+  rd = (struct GNUNET_NAMESTORE_RecordData *) &name[name_len];
 
-  /* TODO: extract real values */
+  /* reset values if values not contained */
+  if (contains_sig == GNUNET_NO)
+    signature = NULL;
+  else
+    signature = (struct GNUNET_CRYPTO_RsaSignature *) &rd[rd_count];
+  if (rd_count == 0)
+    rd = NULL;
+  if (name_len == 0)
+    name = NULL;
 
-  /* Lookup complete, remove queue entry */
-  GNUNET_CONTAINER_DLL_remove (nsh->op_head, nsh->op_tail, qe);
+  memset (&dummy, '0', sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded));
+  if (0 == memcmp (zone_key, &dummy, sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded)))
+      zone_key = NULL;
 
-  /* Notify */
   if (qe->proc != NULL)
+  {
     qe->proc (qe->proc_cls, zone_key, expire, name, rd_count, rd, signature);
+  }
 
+
+  /* Operation done, remove */
+  GNUNET_CONTAINER_DLL_remove(nsh->op_head, nsh->op_tail, qe);
   GNUNET_free (qe);
 
 }
@@ -283,6 +319,11 @@ process_namestore_message (void *cls, const struct GNUNET_MessageHeader *msg)
   /* handle different message type */
   switch (type) {
     case GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME_RESPONSE:
+        if (size < sizeof (struct LookupNameResponseMessage))
+        {
+          GNUNET_break_op (0);
+          break;
+        }
         handle_lookup_name_response (qe, (struct LookupNameResponseMessage *) msg, size);
       break;
     default:
@@ -724,9 +765,20 @@ GNUNET_NAMESTORE_lookup_record (struct GNUNET_NAMESTORE_Handle *h,
   struct GNUNET_NAMESTORE_QueueEntry *qe;
   struct PendingMessage *pe;
   size_t msg_size = 0;
+  size_t name_len = 0;
   uint32_t id = 0;
 
   GNUNET_assert (NULL != h);
+  GNUNET_assert (NULL != zone);
+  GNUNET_assert (NULL != name);
+
+  name_len = strlen (name) + 1;
+  if ((name_len == 0) || (name_len > 256))
+  {
+    GNUNET_break (0);
+    return NULL;
+  }
+
   id = get_op_id(h);
   qe = GNUNET_malloc(sizeof (struct GNUNET_NAMESTORE_QueueEntry));
   qe->nsh = h;
@@ -736,7 +788,7 @@ GNUNET_NAMESTORE_lookup_record (struct GNUNET_NAMESTORE_Handle *h,
   GNUNET_CONTAINER_DLL_insert(h->op_head, h->op_tail, qe);
 
   /* set msg_size*/
-  msg_size = sizeof (struct LookupNameMessage);
+  msg_size = sizeof (struct LookupNameMessage) + name_len;
   pe = GNUNET_malloc(sizeof (struct PendingMessage) + msg_size);
 
   /* create msg here */
@@ -747,6 +799,12 @@ GNUNET_NAMESTORE_lookup_record (struct GNUNET_NAMESTORE_Handle *h,
   msg->header.type = htons (GNUNET_MESSAGE_TYPE_NAMESTORE_LOOKUP_NAME);
   msg->header.size = htons (msg_size);
   msg->op_id = htonl (id);
+  msg->record_type = htonl (record_type);
+  msg->zone = *zone;
+  msg->name_len = htonl (name_len);
+  memcpy (&msg[1], name, name_len);
+
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending `%s' message for name `%s'\n", "NAMESTORE_LOOKUP_NAME", name);
 
   /* transmit message */
   GNUNET_CONTAINER_DLL_insert (h->pending_head, h->pending_tail, pe);
diff --git a/src/namestore/test_namestore_api.c b/src/namestore/test_namestore_api.c
index 335bbbfba..a72530d13 100644
--- a/src/namestore/test_namestore_api.c
+++ b/src/namestore/test_namestore_api.c
@@ -27,7 +27,7 @@
 
 #define VERBOSE GNUNET_EXTRA_LOGGING
 
-#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
+#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
 
 static struct GNUNET_NAMESTORE_Handle * nsh;
 
@@ -112,6 +112,7 @@ void name_lookup_proc (void *cls,
                             const struct GNUNET_NAMESTORE_RecordData *rd,
                             const struct GNUNET_CRYPTO_RsaSignature *signature)
 {
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "name_lookup_proc %p `%s' %i %p %p\n", zone_key, name, rd_count, rd, signature);
   res = 0;
   GNUNET_SCHEDULER_add_now(&end, NULL);
 }
@@ -122,13 +123,17 @@ run (void *cls, char *const *args, const char *cfgfile,
 {
   endbadly_task = GNUNET_SCHEDULER_add_delayed(TIMEOUT,endbadly, NULL);
 
+  GNUNET_HashCode zone;
+  GNUNET_CRYPTO_hash_create_random(GNUNET_CRYPTO_QUALITY_WEAK, &zone);
+  char * name = "dummy.dummy.gnunet";
+
   start_arm (cfgfile);
   GNUNET_assert (arm != NULL);
 
   nsh = GNUNET_NAMESTORE_connect (cfg);
   GNUNET_break (NULL != nsh);
 
-  GNUNET_NAMESTORE_lookup_record (nsh, NULL, NULL, 0, &name_lookup_proc, NULL);
+  GNUNET_NAMESTORE_lookup_record (nsh, &zone, name, 0, &name_lookup_proc, NULL);
 }
 
 static int
diff --git a/src/namestore/test_namestore_api.conf b/src/namestore/test_namestore_api.conf
index be93cb962..1683d13cf 100644
--- a/src/namestore/test_namestore_api.conf
+++ b/src/namestore/test_namestore_api.conf
@@ -4,6 +4,7 @@ DEFAULTSERVICES = namestore
 UNIXPATH = /tmp/gnunet-p1-service-arm.sock
 
 [namestore]
+PREFIX = valgrind --leak-check=full
 AUTOSTART = YES
 UNIXPATH = /tmp/gnunet-service-namestore.sock
 UNIX_MATCH_UID = YES