More fixes for #3522
[oweals/gnunet.git] / src / namestore / gnunet-namestore-fcfsd.c
index 527e46eb985645be946099c3c4de10fa19512d5f..5286b905667b8e79cb2ae9ec18b34fd0e94736d2 100644 (file)
@@ -1,6 +1,6 @@
 /*
      This file is part of GNUnet.
-     (C) 2012-2013 Christian Grothoff (and other contributing authors)
+     (C) 2012-2014 Christian Grothoff (and other contributing authors)
 
      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
@@ -34,6 +34,7 @@
 #include <microhttpd.h>
 #include "gnunet_util_lib.h"
 #include "gnunet_identity_service.h"
+#include "gnunet_gnsrecord_lib.h"
 #include "gnunet_namestore_service.h"
 
 /**
@@ -120,7 +121,7 @@ struct Request
   struct MHD_PostProcessor *pp;
 
   /**
-   * URL to serve in response to this POST (if this request 
+   * URL to serve in response to this POST (if this request
    * was a 'POST')
    */
   const char *post_url;
@@ -129,7 +130,12 @@ struct Request
    * Active request with the namestore.
    */
   struct GNUNET_NAMESTORE_QueueEntry *qe;
-  
+
+  /**
+   * Active iteration with the namestore.
+   */
+  struct GNUNET_NAMESTORE_ZoneIterator *zi;
+
   /**
    * Current processing phase.
    */
@@ -145,6 +151,8 @@ struct Request
    */
   char public_key[128];
 
+  struct GNUNET_CRYPTO_EcdsaPublicKey pub;
+
 };
 
 /**
@@ -171,7 +179,7 @@ struct ZoneinfoRequest
    * Buffer length
    */
   size_t buf_len;
-  
+
   /**
    * Buffer write offset
    */
@@ -196,7 +204,7 @@ static struct GNUNET_NAMESTORE_Handle *ns;
 /**
  * Private key for the fcfsd zone.
  */
-static struct GNUNET_CRYPTO_EccPrivateKey fcfs_zone_pkey;
+static struct GNUNET_CRYPTO_EcdsaPrivateKey fcfs_zone_pkey;
 
 /**
  * Connection to identity service.
@@ -212,7 +220,7 @@ static struct GNUNET_IDENTITY_Operation *id_op;
  * Port we use for the HTTP server.
  */
 static unsigned long long port;
-                       
+
 
 /**
  * Task run whenever HTTP server operations are pending.
@@ -240,12 +248,22 @@ run_httpd_now ()
 }
 
 
+/**
+ * Process a record that was stored in the namestore, adding
+ * the information to the HTML.
+ *
+ * @param cls closure with the `struct ZoneinfoRequest *`
+ * @param zone_key private key of the zone; NULL on disconnect
+ * @param name label of the records; NULL on disconnect
+ * @param rd_len number of entries in @a rd array, 0 if label was deleted
+ * @param rd array of records with data to store
+ */
 static void
 iterate_cb (void *cls,
-           const struct GNUNET_CRYPTO_EccPrivateKey *zone_key,
+           const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
            const char *name,
            unsigned int rd_len,
-           const struct GNUNET_NAMESTORE_RecordData *rd)
+           const struct GNUNET_GNSRECORD_Data *rd)
 {
   struct ZoneinfoRequest *zr = cls;
   struct MHD_Response *response;
@@ -270,8 +288,8 @@ iterate_cb (void *cls,
     MHD_add_response_header (response,
                           MHD_HTTP_HEADER_CONTENT_TYPE,
                           MIME_HTML);
-    MHD_queue_response (zr->connection, 
-                           MHD_HTTP_OK, 
+    MHD_queue_response (zr->connection,
+                           MHD_HTTP_OK,
                            response);
     MHD_destroy_response (response);
     GNUNET_free (zr->zoneinfo);
@@ -286,17 +304,22 @@ iterate_cb (void *cls,
     return;
   }
 
-  if (GNUNET_NAMESTORE_TYPE_PKEY != rd->record_type)
+  if (GNUNET_GNSRECORD_TYPE_PKEY != rd->record_type)
   {
     GNUNET_NAMESTORE_zone_iterator_next (zr->list_it);
     return;
   }
 
   bytes_free = zr->buf_len - zr->write_offset;
-  pkey = GNUNET_NAMESTORE_value_to_string (rd->record_type,
+  pkey = GNUNET_GNSRECORD_value_to_string (rd->record_type,
                                            rd->data,
                                            rd->data_size);
-
+  if (NULL == pkey)
+  {
+    GNUNET_break (0);
+    GNUNET_NAMESTORE_zone_iterator_next (zr->list_it);
+    return;
+  }
   if (bytes_free < (strlen (name) + strlen (pkey) + 40))
   {
     new_buf = GNUNET_malloc (zr->buf_len * 2);
@@ -305,9 +328,9 @@ iterate_cb (void *cls,
     zr->zoneinfo = new_buf;
     zr->buf_len *= 2;
   }
-  sprintf (zr->zoneinfo + zr->write_offset, 
-          "<tr><td>%s</td><td>%s</td></tr>", 
-          name, 
+  sprintf (zr->zoneinfo + zr->write_offset,
+          "<tr><td>%s</td><td>%s</td></tr>",
+          name,
           pkey);
   zr->write_offset = strlen (zr->zoneinfo);
   GNUNET_NAMESTORE_zone_iterator_next (zr->list_it);
@@ -315,7 +338,6 @@ iterate_cb (void *cls,
 }
 
 
-
 /**
  * Handler that returns FCFS zoneinfo page.
  *
@@ -359,8 +381,8 @@ serve_main_page (struct MHD_Connection *connection)
   MHD_add_response_header (response,
                           MHD_HTTP_HEADER_CONTENT_TYPE,
                           MIME_HTML);
-  ret = MHD_queue_response (connection, 
-                           MHD_HTTP_OK, 
+  ret = MHD_queue_response (connection,
+                           MHD_HTTP_OK,
                            response);
   MHD_destroy_response (response);
   return ret;
@@ -394,8 +416,8 @@ fill_s_reply (const char *info,
   MHD_add_response_header (response,
                           MHD_HTTP_HEADER_CONTENT_TYPE,
                           MIME_HTML);
-  ret = MHD_queue_response (connection, 
-                           MHD_HTTP_OK, 
+  ret = MHD_queue_response (connection,
+                           MHD_HTTP_OK,
                            response);
   MHD_destroy_response (response);
   return ret;
@@ -459,19 +481,17 @@ post_iterator (void *cls,
 }
 
 
-
-
 /**
  * Continuation called to notify client about result of the
  * operation.
  *
  * @param cls closure
- * @param success GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
- *                GNUNET_NO if content was already there
- *                GNUNET_YES (or other positive value) on success
+ * @param success #GNUNET_SYSERR on failure (including timeout/queue drop/failure to validate)
+ *                #GNUNET_NO if content was already there
+ *                #GNUNET_YES (or other positive value) on success
  * @param emsg NULL on success, otherwise an error message
  */
-static void 
+static void
 put_continuation (void *cls,
                  int32_t success,
                  const char *emsg)
@@ -499,22 +519,21 @@ put_continuation (void *cls,
  * @param cls closure
  * @param zone_key public key of the zone
  * @param name name that is being mapped (at most 255 characters long)
- * @param rd_count number of entries in 'rd' array
+ * @param rd_count number of entries in @a rd array
  * @param rd array of records with data to store
  */
-static void 
+static void
 zone_to_name_cb (void *cls,
-                const struct GNUNET_CRYPTO_EccPrivateKey *zone_key,
+                const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone_key,
                 const char *name,
                 unsigned int rd_count,
-                const struct GNUNET_NAMESTORE_RecordData *rd)
+                const struct GNUNET_GNSRECORD_Data *rd)
 {
   struct Request *request = cls;
-  struct GNUNET_NAMESTORE_RecordData r;
-  struct GNUNET_CRYPTO_ShortHashCode pub;
-  
+  struct GNUNET_GNSRECORD_Data r;
   request->qe = NULL;
-  if (NULL != name)
+
+  if (0 != rd_count)
   {
     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
                _("Found existing name `%s' for the given key\n"),
@@ -523,11 +542,20 @@ zone_to_name_cb (void *cls,
     run_httpd_now ();
     return;
   }
-  r.data = &pub;
-  r.data_size = sizeof (pub);
+  if (NULL == zone_key)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                _("Error when mapping zone to name\n"));
+    request->phase = RP_FAIL;
+    run_httpd_now ();
+    return;
+  }
+
+  r.data = &request->pub;
+  r.data_size = sizeof (request->pub);
   r.expiration_time = UINT64_MAX;
-  r.record_type = GNUNET_NAMESTORE_TYPE_PKEY;
-  r.flags = GNUNET_NAMESTORE_RF_NONE;
+  r.record_type = GNUNET_GNSRECORD_TYPE_PKEY;
+  r.flags = GNUNET_GNSRECORD_RF_NONE;
   request->qe = GNUNET_NAMESTORE_records_store (ns,
                                                &fcfs_zone_pkey,
                                                request->domain_name,
@@ -537,85 +565,54 @@ zone_to_name_cb (void *cls,
 }
 
 
-/**
- * Process a record that was stored in the namestore.  Used to check if
- * the requested name already exists in the namestore.  If not,
- * proceed to check if the requested key already exists.
- *
- * @param cls closure
- * @param rd_count number of entries in 'rd' array
- * @param rd array of records with data to store
- */
-static void 
-lookup_result_processor (void *cls,
-                        unsigned int rd_count,
-                        const struct GNUNET_NAMESTORE_RecordData *rd)
-{
-  struct Request *request = cls;
-  struct GNUNET_CRYPTO_EccPublicSignKey pub;
-  
-  if (0 != rd_count)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-               _("Found %u existing records for domain `%s'\n"),
-               rd_count,
-               request->domain_name);
-    request->phase = RP_FAIL;
-    run_httpd_now ();
-    return;
-  }
-  if (GNUNET_OK !=
-      GNUNET_CRYPTO_ecc_public_sign_key_from_string (request->public_key,
-                                               strlen (request->public_key),
-                                               &pub))
-  {
-    GNUNET_break (0);
-    request->phase = RP_FAIL;
-    run_httpd_now ();
-    return;
-  }
-  request->qe = GNUNET_NAMESTORE_zone_to_name (ns,
-                                              &fcfs_zone_pkey,
-                                              &pub,
-                                              &zone_to_name_cb,
-                                              request);
-}
-
-
 /**
  * We got a block back from the namestore.  Decrypt it
  * and continue to process the result.
  *
  * @param cls the 'struct Request' we are processing
- * @param block block returned form namestore, NULL on error
+ * @param zone private key of the zone; NULL on disconnect
+ * @param label label of the records; NULL on disconnect
+ * @param rd_count number of entries in @a rd array, 0 if label was deleted
+ * @param rd array of records with data to store
  */
 static void
 lookup_block_processor (void *cls,
-                       const struct GNUNET_NAMESTORE_Block *block)
+                        const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
+                        const char *label,
+                        unsigned int rd_count,
+                        const struct GNUNET_GNSRECORD_Data *rd)
 {
   struct Request *request = cls;
-  struct GNUNET_CRYPTO_EccPublicSignKey pub;
 
   request->qe = NULL;
-  if (NULL == block)
+  if (0 == rd_count)
   {
-    lookup_result_processor (request, 0, NULL);
-    return;
-  }
-  GNUNET_CRYPTO_ecc_key_get_public_for_signature (&fcfs_zone_pkey,
-                                   &pub);
-  if (GNUNET_OK != 
-      GNUNET_NAMESTORE_block_decrypt (block,
-                                     &pub,
-                                     request->domain_name,
-                                     &lookup_result_processor,
-                                     request))
-  {
-    GNUNET_break (0);
-    request->phase = RP_FAIL;
-    run_httpd_now ();
+
+    if (GNUNET_OK !=
+        GNUNET_CRYPTO_ecdsa_public_key_from_string (request->public_key,
+                                                    strlen (request->public_key),
+                                                    &request->pub))
+    {
+      GNUNET_break (0);
+      request->phase = RP_FAIL;
+      run_httpd_now ();
+      return;
+    }
+    request->qe = GNUNET_NAMESTORE_zone_to_name (ns,
+                                                 &fcfs_zone_pkey,
+                                                 &request->pub,
+                                                 &zone_to_name_cb,
+                                                 request);
     return;
   }
+  GNUNET_break (0 != rd_count);
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              _("Found %u existing records for domain `%s'\n"),
+              rd_count,
+              request->domain_name);
+  request->phase = RP_FAIL;
+  run_httpd_now ();
+  return;
 }
 
 
@@ -635,7 +632,7 @@ lookup_block_processor (void *cls,
  *        data *will* be made available incrementally in
  *        upload_data)
  * @param upload_data_size set initially to the size of the
- *        upload_data provided; the method must update this
+ *        @a upload_data provided; the method must update this
  *        value to the number of bytes NOT processed;
  * @param ptr pointer to location where we store the 'struct Request'
  * @return MHD_YES if the connection was handled successfully,
@@ -648,15 +645,14 @@ create_response (void *cls,
                 const char *url,
                 const char *method,
                 const char *version,
-                const char *upload_data, 
+                const char *upload_data,
                 size_t *upload_data_size,
                 void **ptr)
 {
   struct MHD_Response *response;
   struct Request *request;
+  struct GNUNET_CRYPTO_EcdsaPublicKey pub;
   int ret;
-  struct GNUNET_CRYPTO_EccPublicSignKey pub;
-  struct GNUNET_HashCode query;
 
   if ( (0 == strcmp (method, MHD_HTTP_METHOD_GET)) ||
        (0 == strcmp (method, MHD_HTTP_METHOD_HEAD)) )
@@ -672,11 +668,11 @@ create_response (void *cls,
       return ret;
     }
   if (0 == strcmp (method, MHD_HTTP_METHOD_POST))
-    {  
+    {
       request = *ptr;
       if (NULL == request)
       {
-       request = GNUNET_malloc (sizeof (struct Request));
+       request = GNUNET_new (struct Request);
        *ptr = request;
        request->pp = MHD_create_post_processor (connection, 1024,
                                                 &post_iterator, request);
@@ -686,7 +682,7 @@ create_response (void *cls,
                        _("Failed to setup post processor for `%s'\n"),
                        url);
            return MHD_NO; /* internal error */
-         }    
+         }
        return MHD_YES;
       }
       if (NULL != request->pp)
@@ -705,9 +701,9 @@ create_response (void *cls,
        request->pp = NULL;
       }
       if (GNUNET_OK !=
-         GNUNET_CRYPTO_ecc_public_sign_key_from_string (request->public_key,
-                                                   strlen (request->public_key),
-                                                   &pub))
+         GNUNET_CRYPTO_ecdsa_public_key_from_string (request->public_key,
+                                                      strlen (request->public_key),
+                                                      &pub))
       {
        /* parse error */
        return fill_s_reply ("Failed to parse given public key",
@@ -733,15 +729,11 @@ create_response (void *cls,
                                 request, connection);
          }
          request->phase = RP_LOOKUP;
-         GNUNET_CRYPTO_ecc_key_get_public_for_signature (&fcfs_zone_pkey,
-                                           &pub);
-         GNUNET_NAMESTORE_query_from_public_key (&pub,
-                                                 request->domain_name,
-                                                 &query);
-         request->qe = GNUNET_NAMESTORE_lookup_block (ns,
-                                                      &query,
-                                                      &lookup_block_processor,
-                                                      request);
+         request->qe = GNUNET_NAMESTORE_records_lookup (ns,
+                                                       &fcfs_zone_pkey,
+                                                       request->domain_name,
+                                                       &lookup_block_processor,
+                                                       request);
          break;
        case RP_LOOKUP:
          break;
@@ -757,14 +749,14 @@ create_response (void *cls,
          GNUNET_break (0);
          return MHD_NO;
        }
-       return MHD_YES; /* will have a reply later... */    
+       return MHD_YES; /* will have a reply later... */
     }
   /* unsupported HTTP method */
   response = MHD_create_response_from_buffer (strlen (METHOD_ERROR),
                                              (void *) METHOD_ERROR,
                                              MHD_RESPMEM_PERSISTENT);
-  ret = MHD_queue_response (connection, 
-                           MHD_HTTP_METHOD_NOT_ACCEPTABLE, 
+  ret = MHD_queue_response (connection,
+                           MHD_HTTP_METHOD_NOT_ACCEPTABLE,
                            response);
   MHD_destroy_response (response);
   return ret;
@@ -898,7 +890,7 @@ do_shutdown (void *cls,
 }
 
 
-/** 
+/**
  * Method called to inform about the egos of this peer.
  *
  * When used with #GNUNET_IDENTITY_create or #GNUNET_IDENTITY_get,
@@ -906,7 +898,7 @@ do_shutdown (void *cls,
  * @a ego does indicate an error (i.e. name is taken or no default
  * value is known).  If @a ego is non-NULL and if '*ctx'
  * is set in those callbacks, the value WILL be passed to a subsequent
- * call to the identity callback of #GNUNET_IDENTITY_connect (if 
+ * call to the identity callback of #GNUNET_IDENTITY_connect (if
  * that one was not NULL).
  *
  * @param cls closure, NULL
@@ -939,12 +931,12 @@ identity_cb (void *cls,
     {
       httpd = MHD_start_daemon (options,
                                (uint16_t) port,
-                               NULL, NULL, 
-                               &create_response, NULL, 
+                               NULL, NULL,
+                               &create_response, NULL,
                                MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 128,
                                MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
                                MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
-                               MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (4 * 1024), 
+                               MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (4 * 1024),
                                MHD_OPTION_NOTIFY_COMPLETED, &request_completed_callback, NULL,
                                MHD_OPTION_END);
       if (MHD_USE_DEBUG == options)
@@ -994,6 +986,12 @@ run (void *cls, char *const *args, const char *cfgfile,
     }
   identity = GNUNET_IDENTITY_connect (cfg,
                                      NULL, NULL);
+  if (NULL == identity)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                _("Failed to connect to identity\n"));
+    return;
+  }
   id_op = GNUNET_IDENTITY_get (identity, "fcfsd",
                               &identity_cb, NULL);
   GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
@@ -1024,10 +1022,11 @@ main (int argc, char *const *argv)
   ret =
       (GNUNET_OK ==
        GNUNET_PROGRAM_run (argc, argv, "fcfsd",
-                           _("GNU Name System First Come First Serve name registration service"), 
+                           _("GNU Name System First Come First Serve name registration service"),
                           options,
                            &run, NULL)) ? 0 : 1;
   GNUNET_free ((void*) argv);
+  GNUNET_CRYPTO_ecdsa_key_clear (&fcfs_zone_pkey);
   return ret;
 }