simplify code structure, reduce exposure of keystate struct

src/mint/Makefile.am

@@ -70,7 +70,6 @@ taler_mint_httpd_SOURCES = \
   taler-mint-httpd_parsing.c taler-mint-httpd_parsing.h \
   taler-mint-httpd_responses.c taler-mint-httpd_responses.h \
   taler-mint-httpd_mhd.c \
-  taler-mint-httpd_keys.c \
   taler-mint-httpd_deposit.c \
   taler-mint-httpd_withdraw.c \
   taler-mint-httpd_refresh.c

src/mint/taler-mint-httpd.c

@@ -31,7 +31,6 @@
 #include "taler_util.h"
 #include "taler-mint-httpd_parsing.h"
 #include "taler-mint-httpd_mhd.h"
-#include "taler-mint-httpd_keys.h"
 #include "taler-mint-httpd_deposit.h"
 #include "taler-mint-httpd_withdraw.h"
 #include "taler-mint-httpd_refresh.h"

src/mint/taler-mint-httpd_db.c

@@ -28,7 +28,6 @@
 #include <jansson.h>
 #include "taler-mint-httpd_db.h"
 #include "taler_signatures.h"
-#include "taler-mint-httpd_keys.h"
 #include "taler-mint-httpd_responses.h"
 #include "mint_db.h"
 #include "taler_util.h"

src/mint/taler-mint-httpd_db.h

@@ -25,7 +25,6 @@
 #include <microhttpd.h>
 #include <gnunet/gnunet_util_lib.h>
 #include "taler_util.h"
-#include "taler-mint-httpd_keys.h"
 #include "mint_db.h"
 
 

src/mint/taler-mint-httpd_deposit.c

@@ -36,7 +36,6 @@
 #include "taler_signatures.h"
 #include "taler_util.h"
 #include "taler-mint-httpd_parsing.h"
-#include "taler-mint-httpd_keys.h"
 #include "taler-mint-httpd_db.h"
 #include "taler-mint-httpd_deposit.h"
 #include "taler-mint-httpd_responses.h"

src/mint/taler-mint-httpd_keys.c

@@ -1,74 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014 GNUnet e.V.
-
-  TALER is free software; you can redistribute it and/or modify it under the
-  terms of the GNU Affero General Public License as published by the Free Software
-  Foundation; either version 3, or (at your option) any later version.
-
-  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-  A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
-
-  You should have received a copy of the GNU Affero General Public License along with
-  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file taler-mint-httpd_keys.c
- * @brief Handle /keys requests
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include <gnunet/gnunet_util_lib.h>
-#include <jansson.h>
-#include <microhttpd.h>
-#include "taler-mint-httpd_keys.h"
-#include "taler-mint-httpd_keystate.h"
-
-
-/**
- * Function to call to handle the request by sending
- * back static data from the @a rh.
- *
- * @param rh context of the handler
- * @param connection the MHD connection to handle
- * @param[IN|OUT] connection_cls the connection's closure (can be updated)
- * @param upload_data upload data
- * @param[IN|OUT] upload_data_size number of bytes (left) in @a upload_data
- * @return MHD result code
- */
-int
-TALER_MINT_handler_keys (struct RequestHandler *rh,
-                         struct MHD_Connection *connection,
-                         void **connection_cls,
-                         const char *upload_data,
-                         size_t *upload_data_size)
-{
-  struct MintKeyState *key_state;
-  struct MHD_Response *response;
-  int ret;
-
-  key_state = TALER_MINT_key_state_acquire ();
-  response = MHD_create_response_from_buffer (strlen (key_state->keys_json),
-                                              key_state->keys_json,
-                                              MHD_RESPMEM_MUST_COPY);
-  TALER_MINT_key_state_release (key_state);
-  if (NULL == response)
-  {
-    GNUNET_break (0);
-    return MHD_NO;
-  }
-  (void) MHD_add_response_header (response,
-                                  "Content-Type",
-                                  rh->mime_type);
-  ret = MHD_queue_response (connection,
-                            rh->response_code,
-                            response);
-  MHD_destroy_response (response);
-  return ret;
-}
-
-
-/* end of taler-mint-httpd_keys.c */

src/mint/taler-mint-httpd_keys.h

@@ -1,51 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014 GNUnet e.V.
-
-  TALER is free software; you can redistribute it and/or modify it under the
-  terms of the GNU Affero General Public License as published by the Free Software
-  Foundation; either version 3, or (at your option) any later version.
-
-  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-  A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.
-
-  You should have received a copy of the GNU Affero General Public License along with
-  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file taler-mint-httpd_keys.h
- * @brief Handle /keys requests and manage key state
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#ifndef TALER_MINT_HTTPD_KEYS_H
-#define TALER_MINT_HTTPD_KEYS_H
-
-#include <gnunet/gnunet_util_lib.h>
-#include <microhttpd.h>
-#include <jansson.h>
-#include "taler-mint-httpd.h"
-
-
-/**
- * Handle a "/keys" request
- *
- * @param rh context of the handler
- * @param connection the MHD connection to handle
- * @param[IN|OUT] connection_cls the connection's closure (can be updated)
- * @param upload_data upload data
- * @param[IN|OUT] upload_data_size number of bytes (left) in @a upload_data
- * @return MHD result code
-  */
-int
-TALER_MINT_handler_keys (struct RequestHandler *rh,
-                         struct MHD_Connection *connection,
-                         void **connection_cls,
-                         const char *upload_data,
-                         size_t *upload_data_size);
-
-
-
-#endif

src/mint/taler-mint-httpd_keystate.c

@@ -29,6 +29,55 @@
 #include "taler-mint-httpd_parsing.h"
 
 
+/**
+ * Snapshot of the (coin and signing)
+ * keys (including private keys) of the mint.
+ */
+struct MintKeyState
+{
+  /**
+   * JSON array with denomination keys.
+   */
+  json_t *denom_keys_array;
+
+  /**
+   * JSON array with signing keys.
+   */
+  json_t *sign_keys_array;
+
+  /**
+   * Cached JSON text that the mint will send for
+   * a /keys request.
+   */
+  char *keys_json;
+
+  /**
+   * Mapping from denomination keys to denomination key issue struct.
+   */
+  struct GNUNET_CONTAINER_MultiHashMap *denomkey_map;
+
+  /**
+   * When did we initiate the key reloading?
+   */
+  struct GNUNET_TIME_Absolute reload_time;
+
+  /**
+   * When is the next key invalid and we have to reload?
+   */
+  struct GNUNET_TIME_Absolute next_reload;
+
+  /**
+   * Mint signing key that should be used currently.
+   */
+  struct TALER_MINT_SignKeyIssuePriv current_sign_key_issue;
+
+  /**
+   * Reference count.
+   */
+  unsigned int refcnt;
+};
+
+
 /**
  * Mint key state.  Never use directly, instead access via
  * #TALER_MINT_key_state_acquire and #TALER_MINT_key_state_release.
@@ -486,4 +535,48 @@ TALER_MINT_keys_sign (const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose,
 }
 
 
+/**
+ * Function to call to handle the request by sending
+ * back static data from the @a rh.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[IN|OUT] connection_cls the connection's closure (can be updated)
+ * @param upload_data upload data
+ * @param[IN|OUT] upload_data_size number of bytes (left) in @a upload_data
+ * @return MHD result code
+ */
+int
+TALER_MINT_handler_keys (struct RequestHandler *rh,
+                         struct MHD_Connection *connection,
+                         void **connection_cls,
+                         const char *upload_data,
+                         size_t *upload_data_size)
+{
+  struct MintKeyState *key_state;
+  struct MHD_Response *response;
+  int ret;
+
+  key_state = TALER_MINT_key_state_acquire ();
+  response = MHD_create_response_from_buffer (strlen (key_state->keys_json),
+                                              key_state->keys_json,
+                                              MHD_RESPMEM_MUST_COPY);
+  TALER_MINT_key_state_release (key_state);
+  if (NULL == response)
+  {
+    GNUNET_break (0);
+    return MHD_NO;
+  }
+  (void) MHD_add_response_header (response,
+                                  "Content-Type",
+                                  rh->mime_type);
+  ret = MHD_queue_response (connection,
+                            rh->response_code,
+                            response);
+  MHD_destroy_response (response);
+  return ret;
+}
+
+
+
 /* end of taler-mint-httpd_keystate.c */

src/mint/taler-mint-httpd_keystate.h

@@ -35,49 +35,7 @@
  * Snapshot of the (coin and signing)
  * keys (including private keys) of the mint.
  */
-struct MintKeyState
+struct MintKeyState;
-{
-  /**
-   * When did we initiate the key reloading?
-   */
-  struct GNUNET_TIME_Absolute reload_time;
-
-  /**
-   * JSON array with denomination keys.
-   */
-  json_t *denom_keys_array;
-
-  /**
-   * JSON array with signing keys.
-   */
-  json_t *sign_keys_array;
-
-  /**
-   * Mapping from denomination keys to denomination key issue struct.
-   */
-  struct GNUNET_CONTAINER_MultiHashMap *denomkey_map;
-
-  /**
-   * When is the next key invalid and we have to reload?
-   */
-  struct GNUNET_TIME_Absolute next_reload;
-
-  /**
-   * Mint signing key that should be used currently.
-   */
-  struct TALER_MINT_SignKeyIssuePriv current_sign_key_issue;
-
-  /**
-   * Cached JSON text that the mint will send for
-   * a /keys request.
-   */
-  char *keys_json;
-
-  /**
-   * Reference count.
-   */
-  unsigned int refcnt;
-};
 
 
 /**
@@ -135,5 +93,22 @@ TALER_MINT_keys_sign (const struct GNUNET_CRYPTO_EccSignaturePurpose *purpose,
                       struct GNUNET_CRYPTO_EddsaSignature *sig);
 
 
+/**
+ * Handle a "/keys" request
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[IN|OUT] connection_cls the connection's closure (can be updated)
+ * @param upload_data upload data
+ * @param[IN|OUT] upload_data_size number of bytes (left) in @a upload_data
+ * @return MHD result code
+  */
+int
+TALER_MINT_handler_keys (struct RequestHandler *rh,
+                         struct MHD_Connection *connection,
+                         void **connection_cls,
+                         const char *upload_data,
+                         size_t *upload_data_size);
+
 
 #endif

src/mint/taler-mint-httpd_refresh.c

@@ -28,7 +28,6 @@
 #include "taler_signatures.h"
 #include "taler_util.h"
 #include "taler-mint-httpd_parsing.h"
-#include "taler-mint-httpd_keys.h"
 #include "taler-mint-httpd_mhd.h"
 #include "taler-mint-httpd_refresh.h"
 #include "taler-mint-httpd_responses.h"
@@ -125,8 +124,8 @@ handle_refresh_melt_binary (struct MHD_Connection *connection,
   }
 
   // FIXME: badness, use proper way to set to zero...
-  key_state = TALER_MINT_key_state_acquire ();
   memset (&total_cost, 0, sizeof (struct TALER_Amount));
+  key_state = TALER_MINT_key_state_acquire ();
   for (i=0;i<num_new_denoms;i++)
   {
     dki = &TALER_MINT_get_denom_key (key_state,