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[taler-sync] branch master updated: use libtalermhd in sync


From: gnunet
Subject: [taler-sync] branch master updated: use libtalermhd in sync
Date: Sun, 24 Nov 2019 17:32:34 +0100

This is an automated email from the git hooks/post-receive script.

grothoff pushed a commit to branch master
in repository sync.

The following commit(s) were added to refs/heads/master by this push:
     new d6108a6  use libtalermhd in sync
d6108a6 is described below

commit d6108a63b016ebe8410049ca1292b0d7fef73291
Author: Christian Grothoff <address@hidden>
AuthorDate: Sun Nov 24 17:32:30 2019 +0100

    use libtalermhd in sync
---
 src/sync/Makefile.am              |   3 +-
 src/sync/sync-httpd.c             | 270 ++-----------------------
 src/sync/sync-httpd.h             |   6 +-
 src/sync/sync-httpd_backup.c      |  72 ++++---
 src/sync/sync-httpd_backup_post.c |  88 ++++----
 src/sync/sync-httpd_mhd.c         |  96 ++-------
 src/sync/sync-httpd_mhd.h         |  42 ----
 src/sync/sync-httpd_parsing.c     | 267 ------------------------
 src/sync/sync-httpd_parsing.h     |  93 ---------
 src/sync/sync-httpd_responses.c   | 412 --------------------------------------
 src/sync/sync-httpd_responses.h   | 230 ---------------------
 src/sync/sync-httpd_terms.c       |  19 +-
 12 files changed, 128 insertions(+), 1470 deletions(-)

diff --git a/src/sync/Makefile.am b/src/sync/Makefile.am
index 40c8aba..ae62e37 100644
--- a/src/sync/Makefile.am
+++ b/src/sync/Makefile.am
@@ -14,14 +14,13 @@ sync_httpd_SOURCES = \
   sync-httpd_backup.c sync-httpd_backup.h \
   sync-httpd_backup_post.c \
   sync-httpd_mhd.c sync-httpd_mhd.h \
-  sync-httpd_parsing.c sync-httpd_parsing.h \
-  sync-httpd_responses.c sync-httpd_responses.h \
   sync-httpd_terms.c sync-httpd_terms.h
 sync_httpd_LDADD = \
   $(top_builddir)/src/syncdb/libsyncdb.la \
   -lmicrohttpd \
   -ljansson \
   -ltalermerchant \
+  -ltalermhd \
   -ltalerjson \
   -ltalerutil \
   -lgnunetcurl \
diff --git a/src/sync/sync-httpd.c b/src/sync/sync-httpd.c
index d8f8072..1918d42 100644
--- a/src/sync/sync-httpd.c
+++ b/src/sync/sync-httpd.c
@@ -14,16 +14,14 @@
   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */
 /**
- * @file backup/sync-httpd.c
+ * @file sync/sync-httpd.c
  * @brief HTTP serving layer intended to provide basic backup operations
  * @author Christian Grothoff
  */
 #include "platform.h"
 #include <microhttpd.h>
 #include <gnunet/gnunet_util_lib.h>
-#include "sync-httpd_responses.h"
 #include "sync-httpd.h"
-#include "sync-httpd_parsing.h"
 #include "sync-httpd_mhd.h"
 #include "sync_database_lib.h"
 #include "sync-httpd_backup.h"
@@ -35,15 +33,11 @@
 #define UNIX_BACKLOG 500
 
 
-/**
- * The port we are running on
- */
-static long long unsigned port;
 
 /**
  * Should a "Connection: close" header be added to each HTTP response?
  */
-int SH_sync_connection_close;
+static int SH_sync_connection_close;
 
 /**
  * Upload limit to the service, in megabytes.
@@ -90,17 +84,6 @@ static int result;
  */
 static struct MHD_Daemon *mhd;
 
-/**
- * Path for the unix domain-socket
- * to run the daemon on.
- */
-static char *serve_unixpath;
-
-/**
- * File mode for unix-domain socket.
- */
-static mode_t unixpath_mode;
-
 /**
  * Connection handle to the our database
  */
@@ -505,9 +488,15 @@ run (void *cls,
      const struct GNUNET_CONFIGURATION_Handle *config)
 {
   int fh;
+  enum TALER_MHD_GlobalOptions go;
+  uint16_t port;
 
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "Starting sync-httpd\n");
+  go = TALER_MHD_GO_NONE;
+  if (SH_sync_connection_close)
+    go |= TALER_MHD_GO_FORCE_CONNECTION_CLOSE;
+  TALER_MHD_setup (go);
   result = GNUNET_SYSERR;
   GNUNET_SCHEDULER_add_shutdown (&do_shutdown,
                                  NULL);
@@ -577,243 +566,14 @@ run (void *cls,
     return;
   }
 
+  fh = TALER_MHD_bind (config,
+                       "sync",
+                       &port);
+  if ( (0 == port) &&
+       (-1 == fh) )
   {
-    const char *choices[] = {"tcp",
-                             "unix",
-                             NULL};
-
-    const char *serve_type;
-
-    if (GNUNET_OK !=
-        GNUNET_CONFIGURATION_get_value_choice (config,
-                                               "sync",
-                                               "SERVE",
-                                               choices,
-                                               &serve_type))
-    {
-      GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
-                                 "sync",
-                                 "SERVE",
-                                 "serve type required");
-      GNUNET_SCHEDULER_shutdown ();
-      return;
-    }
-
-    if (0 == strcmp (serve_type, "unix"))
-    {
-      struct sockaddr_un *un;
-      char *mode;
-      struct GNUNET_NETWORK_Handle *nh;
-
-      if (GNUNET_OK !=
-          GNUNET_CONFIGURATION_get_value_filename (config,
-                                                   "sync",
-                                                   "unixpath",
-                                                   &serve_unixpath))
-      {
-        GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
-                                   "sync",
-                                   "unixpath",
-                                   "unixpath required");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-
-      if (strlen (serve_unixpath) >= sizeof (un->sun_path))
-      {
-        fprintf (stderr,
-                 "Invalid configuration: unix path too long\n");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-
-      if (GNUNET_OK !=
-          GNUNET_CONFIGURATION_get_value_string (config,
-                                                 "sync",
-                                                 "UNIXPATH_MODE",
-                                                 &mode))
-      {
-        GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
-                                   "sync",
-                                   "UNIXPATH_MODE");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-      errno = 0;
-      unixpath_mode = (mode_t) strtoul (mode, NULL, 8);
-      if (0 != errno)
-      {
-        GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
-                                   "sync",
-                                   "UNIXPATH_MODE",
-                                   "must be octal number");
-        GNUNET_free (mode);
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-      GNUNET_free (mode);
-
-      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                  "Creating listen socket '%s' with mode %o\n",
-                  serve_unixpath, unixpath_mode);
-
-      if (GNUNET_OK != GNUNET_DISK_directory_create_for_file (serve_unixpath))
-      {
-        GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
-                                  "mkdir",
-                                  serve_unixpath);
-      }
-
-      un = GNUNET_new (struct sockaddr_un);
-      un->sun_family = AF_UNIX;
-      strncpy (un->sun_path,
-               serve_unixpath,
-               sizeof (un->sun_path) - 1);
-
-      GNUNET_NETWORK_unix_precheck (un);
-
-      if (NULL == (nh = GNUNET_NETWORK_socket_create (AF_UNIX,
-                                                      SOCK_STREAM,
-                                                      0)))
-      {
-        GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                             "socket(AF_UNIX)");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-      if (GNUNET_OK !=
-          GNUNET_NETWORK_socket_bind (nh,
-                                      (void *) un,
-                                      sizeof (struct sockaddr_un)))
-      {
-        GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                             "bind(AF_UNIX)");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-      if (GNUNET_OK !=
-          GNUNET_NETWORK_socket_listen (nh,
-                                        UNIX_BACKLOG))
-      {
-        GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                             "listen(AF_UNIX)");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-
-      fh = GNUNET_NETWORK_get_fd (nh);
-      GNUNET_NETWORK_socket_free_memory_only_ (nh);
-      if (0 != chmod (serve_unixpath,
-                      unixpath_mode))
-      {
-        GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                             "chmod");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-      port = 0;
-    }
-    else if (0 == strcmp (serve_type, "tcp"))
-    {
-      char *bind_to;
-
-      if (GNUNET_SYSERR ==
-          GNUNET_CONFIGURATION_get_value_number (config,
-                                                 "sync",
-                                                 "PORT",
-                                                 &port))
-      {
-        GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
-                                   "sync",
-                                   "PORT");
-        GNUNET_SCHEDULER_shutdown ();
-        return;
-      }
-      if (GNUNET_OK ==
-          GNUNET_CONFIGURATION_get_value_string (config,
-                                                 "sync",
-                                                 "BIND_TO",
-                                                 &bind_to))
-      {
-        char port_str[6];
-        struct addrinfo hints;
-        struct addrinfo *res;
-        int ec;
-        struct GNUNET_NETWORK_Handle *nh;
-
-        GNUNET_snprintf (port_str,
-                         sizeof (port_str),
-                         "%u",
-                         (uint16_t) port);
-        memset (&hints, 0, sizeof (hints));
-        hints.ai_family = AF_UNSPEC;
-        hints.ai_socktype = SOCK_STREAM;
-        hints.ai_protocol = IPPROTO_TCP;
-        hints.ai_flags = AI_PASSIVE
-#ifdef AI_IDN
-                         | AI_IDN
-#endif
-        ;
-        if (0 !=
-            (ec = getaddrinfo (bind_to,
-                               port_str,
-                               &hints,
-                               &res)))
-        {
-          GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                      "Failed to resolve BIND_TO address `%s': %s\n",
-                      bind_to,
-                      gai_strerror (ec));
-          GNUNET_free (bind_to);
-          GNUNET_SCHEDULER_shutdown ();
-          return;
-        }
-        GNUNET_free (bind_to);
-
-        if (NULL == (nh = GNUNET_NETWORK_socket_create (res->ai_family,
-                                                        res->ai_socktype,
-                                                        res->ai_protocol)))
-        {
-          GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                               "socket");
-          freeaddrinfo (res);
-          GNUNET_SCHEDULER_shutdown ();
-          return;
-        }
-        if (GNUNET_OK !=
-            GNUNET_NETWORK_socket_bind (nh,
-                                        res->ai_addr,
-                                        res->ai_addrlen))
-        {
-          GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                               "bind");
-          freeaddrinfo (res);
-          GNUNET_SCHEDULER_shutdown ();
-          return;
-        }
-        freeaddrinfo (res);
-        if (GNUNET_OK !=
-            GNUNET_NETWORK_socket_listen (nh,
-                                          UNIX_BACKLOG))
-        {
-          GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
-                               "listen");
-          GNUNET_SCHEDULER_shutdown ();
-          return;
-        }
-        fh = GNUNET_NETWORK_get_fd (nh);
-        GNUNET_NETWORK_socket_free_memory_only_ (nh);
-      }
-      else
-      {
-        fh = -1;
-      }
-    }
-    else
-    {
-      // not reached
-      GNUNET_assert (0);
-    }
+    GNUNET_SCHEDULER_shutdown ();
+    return;
   }
   mhd = MHD_start_daemon (MHD_USE_SUSPEND_RESUME | MHD_USE_DUAL_STACK,
                           port,
diff --git a/src/sync/sync-httpd.h b/src/sync/sync-httpd.h
index 33cdb26..a7279d5 100644
--- a/src/sync/sync-httpd.h
+++ b/src/sync/sync-httpd.h
@@ -23,6 +23,7 @@
 
 #include "platform.h"
 #include <microhttpd.h>
+#include <taler/taler_mhd_lib.h>
 #include "sync_database_lib.h"
 
 /**
@@ -121,11 +122,6 @@ struct TM_HandlerContext
 };
 
 
-/**
- * Should a "Connection: close" header be added to each HTTP response?
- */
-extern int SH_sync_connection_close;
-
 /**
  * Handle to the database backend.
  */
diff --git a/src/sync/sync-httpd_backup.c b/src/sync/sync-httpd_backup.c
index e55c7d9..d74f722 100644
--- a/src/sync/sync-httpd_backup.c
+++ b/src/sync/sync-httpd_backup.c
@@ -22,7 +22,7 @@
 #include "sync-httpd.h"
 #include <gnunet/gnunet_util_lib.h>
 #include "sync-httpd_backup.h"
-#include "sync-httpd_responses.h"
+
 
 /**
  * Handle request on @a connection for retrieval of the latest
@@ -47,23 +47,27 @@ sync_handler_backup_get (struct MHD_Connection *connection,
   {
   case SYNC_DB_OLD_BACKUP_MISSMATCH:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             
TALER_EC_INTERNAL_INVARIANT_FAILURE,
-                                             "unexpected return status (backup 
missmatch)");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_INTERNAL_INVARIANT_FAILURE,
+                                       "unexpected return status (backup 
missmatch)");
   case SYNC_DB_PAYMENT_REQUIRED:
-    return SH_RESPONSE_reply_not_found (connection,
-                                        TALER_EC_SYNC_ACCOUNT_UNKNOWN,
-                                        "account");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_NOT_FOUND,
+                                       TALER_EC_SYNC_ACCOUNT_UNKNOWN,
+                                       "account");
   case SYNC_DB_HARD_ERROR:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             TALER_EC_SYNC_DB_FETCH_ERROR,
-                                             "hard database failure");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_SYNC_DB_FETCH_ERROR,
+                                       "hard database failure");
   case SYNC_DB_SOFT_ERROR:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             TALER_EC_SYNC_DB_FETCH_ERROR,
-                                             "soft database failure");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_SYNC_DB_FETCH_ERROR,
+                                       "soft database failure");
   case SYNC_DB_NO_RESULTS:
     {
       struct MHD_Response *resp;
@@ -99,9 +103,10 @@ sync_handler_backup_get (struct MHD_Connection *connection,
                                            sizeof (inm_h)))
         {
           GNUNET_break_op (0);
-          return SH_RESPONSE_reply_bad_request (connection,
-                                                
TALER_EC_SYNC_BAD_IF_NONE_MATCH,
-                                                "Etag does not include a 
base32-encoded SHA-512 hash");
+          return TALER_MHD_reply_with_error (connection,
+                                             MHD_HTTP_BAD_REQUEST,
+                                             TALER_EC_SYNC_BAD_IF_NONE_MATCH,
+                                             "Etag does not include a 
base32-encoded SHA-512 hash");
         }
         if (0 == GNUNET_memcmp (&inm_h,
                                 &backup_hash))
@@ -167,33 +172,38 @@ SH_return_backup (struct MHD_Connection *connection,
   {
   case SYNC_DB_OLD_BACKUP_MISSMATCH:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             
TALER_EC_INTERNAL_INVARIANT_FAILURE,
-                                             "unexpected return status (backup 
missmatch)");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_INTERNAL_INVARIANT_FAILURE,
+                                       "unexpected return status (backup 
missmatch)");
   case SYNC_DB_PAYMENT_REQUIRED:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             
TALER_EC_INTERNAL_INVARIANT_FAILURE,
-                                             "unexpected return status 
(payment required)");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_INTERNAL_INVARIANT_FAILURE,
+                                       "unexpected return status (payment 
required)");
   case SYNC_DB_HARD_ERROR:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             TALER_EC_SYNC_DB_FETCH_ERROR,
-                                             "hard database failure");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_SYNC_DB_FETCH_ERROR,
+                                       "hard database failure");
   case SYNC_DB_SOFT_ERROR:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             TALER_EC_SYNC_DB_FETCH_ERROR,
-                                             "soft database failure");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_SYNC_DB_FETCH_ERROR,
+                                       "soft database failure");
   case SYNC_DB_NO_RESULTS:
     GNUNET_break (0);
     /* Note: can theoretically happen due to non-transactional nature if
        the backup expired / was gc'ed JUST between the two SQL calls.
        But too rare to handle properly, as doing a transaction would be
        expensive. Just admit to failure ;-) */
-    return SH_RESPONSE_reply_internal_error (connection,
-                                             TALER_EC_SYNC_DB_FETCH_ERROR,
-                                             "unexpected empty result set (try 
again?)");
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_SYNC_DB_FETCH_ERROR,
+                                       "unexpected empty result set (try 
again?)");
   case SYNC_DB_ONE_RESULT:
     /* interesting case below */
     break;
diff --git a/src/sync/sync-httpd_backup_post.c 
b/src/sync/sync-httpd_backup_post.c
index 41d6350..8b8ea35 100644
--- a/src/sync/sync-httpd_backup_post.c
+++ b/src/sync/sync-httpd_backup_post.c
@@ -22,7 +22,7 @@
 #include "sync-httpd.h"
 #include <gnunet/gnunet_util_lib.h>
 #include "sync-httpd_backup.h"
-#include "sync-httpd_responses.h"
+#include <taler/taler_json_lib.h>
 #include <taler/taler_merchant_service.h>
 #include <taler/taler_signatures.h>
 
@@ -273,8 +273,8 @@ proposal_cb (void *cls,
   if (0 >= qs)
   {
     GNUNET_break (0);
-    bc->resp = SH_RESPONSE_make_error (TALER_EC_SYNC_PAYMENT_CREATE_DB_ERROR,
-                                       "Failed to persist payment request in 
sync database");
+    bc->resp = TALER_MHD_make_error (TALER_EC_SYNC_PAYMENT_CREATE_DB_ERROR,
+                                     "Failed to persist payment request in 
sync database");
     bc->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
     return;
   }
@@ -358,8 +358,8 @@ check_payment_cb (void *cls,
     if (0 <= qs)
       return; /* continue as planned */
     GNUNET_break (0);
-    bc->resp = SH_RESPONSE_make_error (TALER_EC_SYNC_PAYMENT_CONFIRM_DB_ERROR,
-                                       "Failed to persist payment confirmation 
in sync database");
+    bc->resp = TALER_MHD_make_error (TALER_EC_SYNC_PAYMENT_CONFIRM_DB_ERROR,
+                                     "Failed to persist payment confirmation 
in sync database");
     bc->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
     return; /* continue as planned */
   }
@@ -370,8 +370,8 @@ check_payment_cb (void *cls,
     bc->response_code = MHD_HTTP_PAYMENT_REQUIRED;
     return;
   }
-  bc->resp = SH_RESPONSE_make_error (TALER_EC_SYNC_PAYMENT_TIMEOUT,
-                                     "Timeout awaiting promised payment");
+  bc->resp = TALER_MHD_make_error (TALER_EC_SYNC_PAYMENT_TIMEOUT,
+                                   "Timeout awaiting promised payment");
   bc->response_code = MHD_HTTP_REQUEST_TIMEOUT;
 }
 
@@ -431,8 +431,8 @@ begin_payment (struct BackupContext *bc,
     struct MHD_Response *resp;
     int ret;
 
-    resp = SH_RESPONSE_make_error (TALER_EC_SYNC_PAYMENT_CHECK_ORDER_DB_ERROR,
-                                   "Failed to check for existing orders in 
sync database");
+    resp = TALER_MHD_make_error (TALER_EC_SYNC_PAYMENT_CHECK_ORDER_DB_ERROR,
+                                 "Failed to check for existing orders in sync 
database");
     ret = MHD_queue_response (bc->con,
                               MHD_HTTP_INTERNAL_SERVER_ERROR,
                               resp);
@@ -503,9 +503,10 @@ handle_database_error (struct BackupContext *bc,
   case SYNC_DB_HARD_ERROR:
   case SYNC_DB_SOFT_ERROR:
     GNUNET_break (0);
-    return SH_RESPONSE_reply_internal_error (bc->con,
-                                             
TALER_EC_SYNC_DATABASE_FETCH_ERROR,
-                                             "failed to fetch existing record 
from database");
+    return TALER_MHD_reply_with_error (bc->con,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_SYNC_DATABASE_FETCH_ERROR,
+                                       "failed to fetch existing record from 
database");
   case SYNC_DB_NO_RESULTS:
     GNUNET_assert (0);
     return MHD_NO;
@@ -563,29 +564,30 @@ sync_handler_backup_post (struct MHD_Connection 
*connection,
                     &len)) )
       {
         GNUNET_break_op (0);
-        return SH_RESPONSE_reply_bad_request (connection,
-                                              TALER_EC_SYNC_BAD_CONTENT_LENGTH,
-                                              (NULL == lens)
-                                              ? "Content-length value missing"
-                                              : "Content-length value 
malformed");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_BAD_REQUEST,
+                                           TALER_EC_SYNC_BAD_CONTENT_LENGTH,
+                                           (NULL == lens)
+                                           ? "Content-length value missing"
+                                           : "Content-length value malformed");
       }
       if (len / 1024 / 1024 >= SH_upload_limit_mb)
       {
         GNUNET_break_op (0);
-        return SH_RESPONSE_reply_rc (connection,
-                                     MHD_HTTP_PAYLOAD_TOO_LARGE,
-                                     TALER_EC_SYNC_BAD_CONTENT_LENGTH,
-                                     "Content-length value not acceptable");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_PAYLOAD_TOO_LARGE,
+                                           TALER_EC_SYNC_BAD_CONTENT_LENGTH,
+                                           "Content-length value not 
acceptable");
       }
       bc->upload = GNUNET_malloc_large (len);
       if (NULL == bc->upload)
       {
         GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
                              "malloc");
-        return SH_RESPONSE_reply_rc (connection,
-                                     MHD_HTTP_PAYLOAD_TOO_LARGE,
-                                     
TALER_EC_SYNC_OUT_OF_MEMORY_ON_CONTENT_LENGTH,
-                                     "Server out of memory, try again later");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_PAYLOAD_TOO_LARGE,
+                                           
TALER_EC_SYNC_OUT_OF_MEMORY_ON_CONTENT_LENGTH,
+                                           "Server out of memory, try again 
later");
       }
       bc->upload_size = (size_t) len;
     }
@@ -603,9 +605,10 @@ sync_handler_backup_post (struct MHD_Connection 
*connection,
                                            sizeof (&bc->old_backup_hash))) )
       {
         GNUNET_break_op (0);
-        return SH_RESPONSE_reply_bad_request (connection,
-                                              TALER_EC_SYNC_BAD_IF_MATCH,
-                                              "If-Match does not include not a 
base32-encoded SHA-512 hash");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_BAD_REQUEST,
+                                           TALER_EC_SYNC_BAD_IF_MATCH,
+                                           "If-Match does not include not a 
base32-encoded SHA-512 hash");
       }
     }
     {
@@ -622,9 +625,10 @@ sync_handler_backup_post (struct MHD_Connection 
*connection,
                                            sizeof (&bc->account_sig))) )
       {
         GNUNET_break_op (0);
-        return SH_RESPONSE_reply_bad_request (connection,
-                                              TALER_EC_SYNC_BAD_SYNC_SIGNATURE,
-                                              "Sync-Signature does not include 
a base32-encoded EdDSA signature");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_BAD_REQUEST,
+                                           TALER_EC_SYNC_BAD_SYNC_SIGNATURE,
+                                           "Sync-Signature does not include a 
base32-encoded EdDSA signature");
       }
     }
     {
@@ -641,9 +645,10 @@ sync_handler_backup_post (struct MHD_Connection 
*connection,
                                            sizeof (&bc->new_backup_hash))) )
       {
         GNUNET_break_op (0);
-        return SH_RESPONSE_reply_bad_request (connection,
-                                              TALER_EC_SYNC_BAD_ETAG,
-                                              "Etag does not include not a 
base32-encoded SHA-512 hash");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_BAD_REQUEST,
+                                           TALER_EC_SYNC_BAD_ETAG,
+                                           "Etag does not include not a 
base32-encoded SHA-512 hash");
       }
     }
     /* validate signature */
@@ -661,10 +666,10 @@ sync_handler_backup_post (struct MHD_Connection 
*connection,
                                       &account->eddsa_pub))
       {
         GNUNET_break_op (0);
-        return SH_RESPONSE_reply_rc (connection,
-                                     MHD_HTTP_UNAUTHORIZED,
-                                     TALER_EC_SYNC_INVALID_SIGNATURE,
-                                     "Account signature does not match 
upload");
+        return TALER_MHD_reply_with_error (connection,
+                                           MHD_HTTP_UNAUTHORIZED,
+                                           TALER_EC_SYNC_INVALID_SIGNATURE,
+                                           "Account signature does not match 
upload");
       }
     }
     /* get ready to hash (done here as we may go async for payments next) */
@@ -760,9 +765,10 @@ sync_handler_backup_post (struct MHD_Connection 
*connection,
                             &bc->new_backup_hash))
     {
       GNUNET_break_op (0);
-      return SH_RESPONSE_reply_bad_request (connection,
-                                            TALER_EC_SYNC_INVALID_UPLOAD,
-                                            "Data uploaded does not match Etag 
promise");
+      return TALER_MHD_reply_with_error (connection,
+                                         MHD_HTTP_BAD_REQUEST,
+                                         TALER_EC_SYNC_INVALID_UPLOAD,
+                                         "Data uploaded does not match Etag 
promise");
     }
   }
 
diff --git a/src/sync/sync-httpd_mhd.c b/src/sync/sync-httpd_mhd.c
index 077105e..75f2a63 100644
--- a/src/sync/sync-httpd_mhd.c
+++ b/src/sync/sync-httpd_mhd.c
@@ -25,7 +25,6 @@
 #include "platform.h"
 #include <jansson.h>
 #include "sync-httpd_mhd.h"
-#include "sync-httpd_responses.h"
 
 
 /**
@@ -46,29 +45,16 @@ SH_MHD_handler_static_response (struct SH_RequestHandler 
*rh,
                                 const char *upload_data,
                                 size_t *upload_data_size)
 {
-  struct MHD_Response *response;
-  int ret;
-
+  (void) connection_cls;
+  (void) upload_data;
+  (void) upload_data_size;
   if (0 == rh->data_size)
     rh->data_size = strlen ((const char *) rh->data);
-  response = MHD_create_response_from_buffer (rh->data_size,
-                                              (void *) rh->data,
-                                              MHD_RESPMEM_PERSISTENT);
-  if (NULL == response)
-  {
-    GNUNET_break (0);
-    return MHD_NO;
-  }
-  SH_RESPONSE_add_global_headers (response);
-  if (NULL != rh->mime_type)
-    (void) MHD_add_response_header (response,
-                                    MHD_HTTP_HEADER_CONTENT_TYPE,
-                                    rh->mime_type);
-  ret = MHD_queue_response (connection,
-                            rh->response_code,
-                            response);
-  MHD_destroy_response (response);
-  return ret;
+  return TALER_MHD_reply_static (connection,
+                                 rh->response_code,
+                                 rh->mime_type,
+                                 (void *) rh->data,
+                                 rh->data_size);
 }
 
 
@@ -90,66 +76,12 @@ SH_MHD_handler_agpl_redirect (struct SH_RequestHandler *rh,
                               const char *upload_data,
                               size_t *upload_data_size)
 {
-  const char *agpl =
-    "This server is licensed under the Affero GPL. You will now be redirected 
to the source code.";
-  struct MHD_Response *response;
-  int ret;
-
-  response = MHD_create_response_from_buffer (strlen (agpl),
-                                              (void *) agpl,
-                                              MHD_RESPMEM_PERSISTENT);
-  if (NULL == response)
-  {
-    GNUNET_break (0);
-    return MHD_NO;
-  }
-  SH_RESPONSE_add_global_headers (response);
-  if (NULL != rh->mime_type)
-    (void) MHD_add_response_header (response,
-                                    MHD_HTTP_HEADER_CONTENT_TYPE,
-                                    rh->mime_type);
-  if (MHD_NO ==
-      MHD_add_response_header (response,
-                               MHD_HTTP_HEADER_LOCATION,
-                               "http://www.git.taler.net/sync.git";))
-  {
-    GNUNET_break (0);
-    ret = MHD_NO;
-  }
-  else
-  {
-    ret = MHD_queue_response (connection,
-                              rh->response_code,
-                              response);
-  }
-  MHD_destroy_response (response);
-  return ret;
-}
-
-
-/**
- * Function to call to handle the request by building a JSON
- * reply with an error message from @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
-SH_MHD_handler_send_json_pack_error (struct SH_RequestHandler *rh,
-                                     struct MHD_Connection *connection,
-                                     void **connection_cls,
-                                     const char *upload_data,
-                                     size_t *upload_data_size)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      rh->response_code,
-                                      "{s:s}",
-                                      "error",
-                                      rh->data);
+  (void) rh;
+  (void) connection_cls;
+  (void) upload_data;
+  (void) upload_data_size;
+  return TALER_MHD_reply_agpl (connection,
+                               "http://www.git.taler.net/sync.git";);
 }
 
 
diff --git a/src/sync/sync-httpd_mhd.h b/src/sync/sync-httpd_mhd.h
index 36612ff..40efd2e 100644
--- a/src/sync/sync-httpd_mhd.h
+++ b/src/sync/sync-httpd_mhd.h
@@ -68,46 +68,4 @@ SH_MHD_handler_agpl_redirect (struct SH_RequestHandler *rh,
                               size_t *upload_data_size);
 
 
-/**
- * Function to call to handle the request by building a JSON
- * reply from varargs.
- *
- * @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 response_code HTTP response code to use
- * @param do_cache can the response be cached? (0: no, 1: yes)
- * @param fmt format string for pack
- * @param ... varargs
- * @return MHD result code
- */
-int
-SH_MHD_helper_send_json_pack (struct SH_RequestHandler *rh,
-                              struct MHD_Connection *connection,
-                              void *connection_cls,
-                              int response_code,
-                              int do_cache,
-                              const char *fmt,
-                              ...);
-
-
-/**
- * Function to call to handle the request by building a JSON
- * reply with an error message from @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
-SH_MHD_handler_send_json_pack_error (struct SH_RequestHandler *rh,
-                                     struct MHD_Connection *connection,
-                                     void **connection_cls,
-                                     const char *upload_data,
-                                     size_t *upload_data_size);
-
-
 #endif
diff --git a/src/sync/sync-httpd_parsing.c b/src/sync/sync-httpd_parsing.c
deleted file mode 100644
index 180f47c..0000000
--- a/src/sync/sync-httpd_parsing.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014, 2015, 2016 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,
-  see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file sync-httpd_parsing.c
- * @brief functions to parse incoming requests
- *        (MHD arguments and JSON snippets)
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include <gnunet/gnunet_util_lib.h>
-#include <taler/taler_json_lib.h>
-#include "sync-httpd_parsing.h"
-#include "sync-httpd_responses.h"
-
-/* FIXME: de-duplicate code with taler-exchange-httpd_parsing.c
-   and taler-exchange-httpd_response.c */
-
-/**
- * Initial size for POST request buffer.
- */
-#define REQUEST_BUFFER_INITIAL (2 * 1024)
-
-/**
- * Maximum POST request size.
- */
-#define REQUEST_BUFFER_MAX (1024 * 1024)
-
-
-/**
- * Buffer for POST requests.
- */
-struct Buffer
-{
-  /**
-   * Allocated memory
-   */
-  char *data;
-
-  /**
-   * Number of valid bytes in buffer.
-   */
-  size_t fill;
-
-  /**
-   * Number of allocated bytes in buffer.
-   */
-  size_t alloc;
-};
-
-
-/**
- * Free the data in a buffer.  Does *not* free
- * the buffer object itself.
- *
- * @param buf buffer to de-initialize
- */
-static void
-buffer_deinit (struct Buffer *buf)
-{
-  GNUNET_free_non_null (buf->data);
-  buf->data = NULL;
-}
-
-
-/**
- * Function called whenever we are done with a request
- * to clean up our state.
- *
- * @param con_cls value as it was left by
- *        #SH_PARSE_post_json(), to be cleaned up
- */
-void
-SH_PARSE_post_cleanup_callback (void *con_cls)
-{
-  struct Buffer *r = con_cls;
-
-  if (NULL != r)
-  {
-    buffer_deinit (r);
-    GNUNET_free (r);
-  }
-}
-
-
-/**
- * Process a POST request containing a JSON object.  This function
- * realizes an MHD POST processor that will (incrementally) process
- * JSON data uploaded to the HTTP server.  It will store the
- * required state in the @a con_cls, which must be cleaned up
- * using #SH_PARSE_post_cleanup_callback().
- *
- * @param connection the MHD connection
- * @param con_cls the closure (points to a `struct Buffer *`)
- * @param upload_data the POST data
- * @param upload_data_size number of bytes in @a upload_data
- * @param json the JSON object for a completed request
- * @return
- *    #GNUNET_YES if json object was parsed or at least
- *               may be parsed in the future (call again);
- *               `*json` will be NULL if we need to be called again,
- *                and non-NULL if we are done.
- *    #GNUNET_NO if request is incomplete or invalid
- *               (error message was generated)
- *    #GNUNET_SYSERR on internal error
- *               (we could not even queue an error message,
- *                close HTTP session with MHD_NO)
- */
-int
-SH_PARSE_post_json (struct MHD_Connection *connection,
-                    void **con_cls,
-                    const char *upload_data,
-                    size_t *upload_data_size,
-                    json_t **json)
-{
-  enum GNUNET_JSON_PostResult pr;
-
-  pr = GNUNET_JSON_post_parser (REQUEST_BUFFER_MAX,
-                                connection,
-                                con_cls,
-                                upload_data,
-                                upload_data_size,
-                                json);
-  switch (pr)
-  {
-
-  case GNUNET_JSON_PR_OUT_OF_MEMORY:
-    return (MHD_NO == SH_RESPONSE_reply_internal_error
-              (connection,
-              TALER_EC_PARSER_OUT_OF_MEMORY,
-              "out of memory")) ? GNUNET_SYSERR : GNUNET_NO;
-
-  case GNUNET_JSON_PR_CONTINUE:
-    return GNUNET_YES;
-
-  case GNUNET_JSON_PR_REQUEST_TOO_LARGE:
-    return (MHD_NO == SH_RESPONSE_reply_request_too_large
-              (connection)) ? GNUNET_SYSERR : GNUNET_NO;
-
-  case GNUNET_JSON_PR_JSON_INVALID:
-    return (MHD_YES ==
-            SH_RESPONSE_reply_invalid_json (connection))
-           ? GNUNET_NO : GNUNET_SYSERR;
-  case GNUNET_JSON_PR_SUCCESS:
-    GNUNET_break (NULL != *json);
-    return GNUNET_YES;
-  }
-  /* this should never happen */
-  GNUNET_break (0);
-  return GNUNET_SYSERR;
-}
-
-
-/**
- * Parse JSON object into components based on the given field
- * specification.
- *
- * @param connection the connection to send an error response to
- * @param root the JSON node to start the navigation at.
- * @param spec field specification for the parser
- * @return
- *    #GNUNET_YES if navigation was successful (caller is responsible
- *                for freeing allocated variable-size data using
- *                #GNUNET_JSON_parse_free() when done)
- *    #GNUNET_NO if json is malformed, error response was generated
- *    #GNUNET_SYSERR on internal error
- */
-int
-SH_PARSE_json_data (struct MHD_Connection *connection,
-                    const json_t *root,
-                    struct GNUNET_JSON_Specification *spec)
-{
-  int ret;
-  const char *error_json_name;
-  unsigned int error_line;
-
-  ret = GNUNET_JSON_parse (root,
-                           spec,
-                           &error_json_name,
-                           &error_line);
-  if (GNUNET_SYSERR == ret)
-  {
-    if (NULL == error_json_name)
-      error_json_name = "<no field>";
-    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                "Parsing failed due to field '%s'\n",
-                error_json_name);
-    ret = (MHD_YES ==
-           SH_RESPONSE_reply_json_pack (connection,
-                                        MHD_HTTP_BAD_REQUEST,
-                                        "{s:s, s:s, s:I}",
-                                        "error", "parse error",
-                                        "field", error_json_name,
-                                        "line", (json_int_t) error_line))
-          ? GNUNET_NO : GNUNET_SYSERR;
-    return ret;
-  }
-  return GNUNET_YES;
-}
-
-
-/**
- * Extract base32crockford encoded data from request.
- *
- * Queues an error response to the connection if the parameter is
- * missing or invalid.
- *
- * @param connection the MHD connection
- * @param param_name the name of the parameter with the key
- * @param[out] out_data pointer to store the result
- * @param out_size expected size of data
- * @return
- *   #GNUNET_YES if the the argument is present
- *   #GNUNET_NO if the argument is absent or malformed
- *   #GNUNET_SYSERR on internal error (error response could not be sent)
- */
-int
-SH_PARSE_mhd_request_arg_data (struct MHD_Connection *connection,
-                               const char *param_name,
-                               void *out_data,
-                               size_t out_size)
-{
-  const char *str;
-
-  str = MHD_lookup_connection_value (connection,
-                                     MHD_GET_ARGUMENT_KIND,
-                                     param_name);
-  if (NULL == str)
-  {
-    return (MHD_NO ==
-            SH_RESPONSE_reply_arg_missing (connection,
-                                           TALER_EC_PARAMETER_MISSING,
-                                           param_name))
-           ? GNUNET_SYSERR : GNUNET_NO;
-  }
-  if (GNUNET_OK !=
-      GNUNET_STRINGS_string_to_data (str,
-                                     strlen (str),
-                                     out_data,
-                                     out_size))
-    return (MHD_NO ==
-            SH_RESPONSE_reply_arg_invalid (connection,
-                                           TALER_EC_PARAMETER_MALFORMED,
-                                           param_name))
-           ? GNUNET_SYSERR : GNUNET_NO;
-  return GNUNET_OK;
-}
-
-
-/* end of taler-merchant-httpd_parsing.c */
diff --git a/src/sync/sync-httpd_parsing.h b/src/sync/sync-httpd_parsing.h
deleted file mode 100644
index d7e5be3..0000000
--- a/src/sync/sync-httpd_parsing.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014, 2015, 2016 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, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file sync-httpd_parsing.h
- * @brief functions to parse incoming requests
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#ifndef sync_HTTPD_PARSING_H
-#define sync_HTTPD_PARSING_H
-
-#include <microhttpd.h>
-#include <taler/taler_util.h>
-#include <taler/taler_json_lib.h>
-
-/**
- * Process a POST request containing a JSON object.  This
- * function realizes an MHD POST processor that will
- * (incrementally) process JSON data uploaded to the HTTP
- * server.  It will store the required state in the
- * "connection_cls", which must be cleaned up using
- * #SH_PARSE_post_cleanup_callback().
- *
- * @param connection the MHD connection
- * @param con_cls the closure (points to a `struct Buffer *`)
- * @param upload_data the POST data
- * @param upload_data_size number of bytes in @a upload_data
- * @param json the JSON object for a completed request
- * @return
- *    #GNUNET_YES if json object was parsed or at least
- *               may be parsed in the future (call again);
- *               `*json` will be NULL if we need to be called again,
- *                and non-NULL if we are done.
- *    #GNUNET_NO is request incomplete or invalid
- *               (error message was generated)
- *    #GNUNET_SYSERR on internal error
- *               (we could not even queue an error message,
- *                close HTTP session with MHD_NO)
- */
-int
-SH_PARSE_post_json (struct MHD_Connection *connection,
-                    void **con_cls,
-                    const char *upload_data,
-                    size_t *upload_data_size,
-                    json_t **json);
-
-
-/**
- * Function called whenever we are done with a request
- * to clean up our state.
- *
- * @param con_cls value as it was left by
- *        #SH_PARSE_post_json(), to be cleaned up
- */
-void
-SH_PARSE_post_cleanup_callback (void *con_cls);
-
-
-/**
- * Parse JSON object into components based on the given field
- * specification.
- *
- * @param connection the connection to send an error response to
- * @param root the JSON node to start the navigation at.
- * @param spec field specification for the parser
- * @return
- *    #GNUNET_YES if navigation was successful (caller is responsible
- *                for freeing allocated variable-size data using
- *                #GNUNET_JSON_parse_free() when done)
- *    #GNUNET_NO if json is malformed, error response was generated
- *    #GNUNET_SYSERR on internal error
- */
-int
-SH_PARSE_json_data (struct MHD_Connection *connection,
-                    const json_t *root,
-                    struct GNUNET_JSON_Specification *spec);
-
-
-#endif /* TALER_MERCHANT_HTTPD_PARSING_H */
diff --git a/src/sync/sync-httpd_responses.c b/src/sync/sync-httpd_responses.c
deleted file mode 100644
index 628a0ac..0000000
--- a/src/sync/sync-httpd_responses.c
+++ /dev/null
@@ -1,412 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014-2017 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, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file sync-httpd_responses.c
- * @brief API for generating the various replies of the exchange; these
- *        functions are called SH_RESPONSE_reply_ and they generate
- *        and queue MHD response objects for a given connection.
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include "sync-httpd.h"
-#include "sync-httpd_responses.h"
-#include <taler/taler_util.h>
-#include <taler/taler_json_lib.h>
-#include <gnunet/gnunet_util_lib.h>
-
-
-/**
- * Make JSON response object.
- *
- * @param json the json object
- * @return MHD response object
- */
-struct MHD_Response *
-SH_RESPONSE_make_json (const json_t *json)
-{
-  struct MHD_Response *resp;
-  char *json_str;
-
-  json_str = json_dumps (json,
-                         JSON_INDENT (2));
-  if (NULL == json_str)
-  {
-    GNUNET_break (0);
-    return NULL;
-  }
-  resp = MHD_create_response_from_buffer (strlen (json_str),
-                                          json_str,
-                                          MHD_RESPMEM_MUST_FREE);
-  if (NULL == resp)
-  {
-    free (json_str);
-    GNUNET_break (0);
-    return NULL;
-  }
-  GNUNET_break (MHD_YES ==
-                MHD_add_response_header (resp,
-                                         
MHD_HTTP_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN,
-                                         "*"));
-  GNUNET_break (MHD_YES ==
-                MHD_add_response_header (resp,
-                                         MHD_HTTP_HEADER_CONTENT_TYPE,
-                                         "application/json"));
-  return resp;
-}
-
-
-/**
- * Send JSON object as response.
- *
- * @param connection the MHD connection
- * @param json the json object
- * @param response_code the http response code
- * @return MHD result code
- */
-int
-SH_RESPONSE_reply_json (struct MHD_Connection *connection,
-                        const json_t *json,
-                        unsigned int response_code)
-{
-  struct MHD_Response *resp;
-  int ret;
-
-  resp = SH_RESPONSE_make_json (json);
-  if (NULL == resp)
-    return MHD_NO;
-  ret = MHD_queue_response (connection,
-                            response_code,
-                            resp);
-  MHD_destroy_response (resp);
-  return ret;
-}
-
-
-/**
- * Make JSON response object.
- *
- * @param fmt format string for pack
- * @param ... varargs
- * @return MHD response object
- */
-struct MHD_Response *
-SH_RESPONSE_make_json_pack (const char *fmt,
-                            ...)
-{
-  json_t *json;
-  va_list argp;
-  struct MHD_Response *ret;
-  json_error_t jerror;
-
-  va_start (argp, fmt);
-  json = json_vpack_ex (&jerror,
-                        0,
-                        fmt,
-                        argp);
-  va_end (argp);
-  if (NULL == json)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Failed to pack JSON with format `%s': %s\n",
-                fmt,
-                jerror.text);
-    GNUNET_break (0);
-    return MHD_NO;
-  }
-  ret = SH_RESPONSE_make_json (json);
-  json_decref (json);
-  return ret;
-}
-
-
-/**
- * Function to call to handle the request by building a JSON
- * reply from a format string and varargs.
- *
- * @param connection the MHD connection to handle
- * @param response_code HTTP response code to use
- * @param fmt format string for pack
- * @param ... varargs
- * @return MHD result code
- */
-int
-SH_RESPONSE_reply_json_pack (struct MHD_Connection *connection,
-                             unsigned int response_code,
-                             const char *fmt,
-                             ...)
-{
-  json_t *json;
-  va_list argp;
-  int ret;
-  json_error_t jerror;
-
-  va_start (argp, fmt);
-  json = json_vpack_ex (&jerror,
-                        0,
-                        fmt,
-                        argp);
-  va_end (argp);
-  if (NULL == json)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Failed to pack JSON with format `%s': %s\n",
-                fmt,
-                jerror.text);
-    GNUNET_break (0);
-    return MHD_NO;
-  }
-  ret = SH_RESPONSE_reply_json (connection,
-                                json,
-                                response_code);
-  json_decref (json);
-  return ret;
-}
-
-
-/**
- * Create a response indicating an internal error.
- *
- * @param ec error code to return
- * @param hint hint about the internal error's nature
- * @return a MHD response object
- */
-struct MHD_Response *
-SH_RESPONSE_make_error (enum TALER_ErrorCode ec,
-                        const char *hint)
-{
-  return SH_RESPONSE_make_json_pack ("{s:I, s:s}",
-                                     "code", (json_int_t) ec,
-                                     "hint", hint);
-}
-
-
-/**
- * Send a response indicating an internal error.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param hint hint about the internal error's nature
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_internal_error (struct MHD_Connection *connection,
-                                  enum TALER_ErrorCode ec,
-                                  const char *hint)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_INTERNAL_SERVER_ERROR,
-                                      "{s:I, s:s}",
-                                      "code", (json_int_t) ec,
-                                      "hint", hint);
-}
-
-
-/**
- * Send a response indicating that the request was too big.
- *
- * @param connection the MHD connection to use
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_request_too_large (struct MHD_Connection *connection)
-{
-  struct MHD_Response *resp;
-  int ret;
-
-  resp = MHD_create_response_from_buffer (0,
-                                          NULL,
-                                          MHD_RESPMEM_PERSISTENT);
-  if (NULL == resp)
-    return MHD_NO;
-  ret = MHD_queue_response (connection,
-                            MHD_HTTP_REQUEST_ENTITY_TOO_LARGE,
-                            resp);
-  MHD_destroy_response (resp);
-  return ret;
-}
-
-
-/**
- * Send a response indicating that we did not find the @a object
- * needed for the reply.
- *
- * @param connection the MHD connection to use
- * @param response_code response code to use
- * @param ec error code to return
- * @param msg human-readable diagnostic
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_rc (struct MHD_Connection *connection,
-                      unsigned int response_code,
-                      enum TALER_ErrorCode ec,
-                      const char *msg)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      response_code,
-                                      "{s:I, s:s}",
-                                      "code", (json_int_t) ec,
-                                      "error", msg);
-}
-
-
-/**
- * Send a response indicating that the JSON was malformed.
- *
- * @param connection the MHD connection to use
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_invalid_json (struct MHD_Connection *connection)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_BAD_REQUEST,
-                                      "{s:I, s:s}",
-                                      "code",
-                                      (json_int_t) TALER_EC_JSON_INVALID,
-                                      "error", "invalid json");
-}
-
-
-/**
- * Send a response indicating that we did not find the @a object
- * needed for the reply.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param object name of the object we did not find
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_not_found (struct MHD_Connection *connection,
-                             enum TALER_ErrorCode ec,
-                             const char *object)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_NOT_FOUND,
-                                      "{s:I, s:s}",
-                                      "code", (json_int_t) ec,
-                                      "error", object);
-}
-
-
-/**
- * Send a response indicating that the request was malformed.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param issue description of what was wrong with the request
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_bad_request (struct MHD_Connection *connection,
-                               enum TALER_ErrorCode ec,
-                               const char *issue)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_BAD_REQUEST,
-                                      "{s:I, s:s}",
-                                      "code", (json_int_t) ec,
-                                      "error", issue);
-}
-
-
-/**
- * Add headers we want to return in every response.
- * Useful for testing, like if we want to always close
- * connections.
- *
- * @param response response to modify
- */
-void
-SH_RESPONSE_add_global_headers (struct MHD_Response *response)
-{
-  if (SH_sync_connection_close)
-    GNUNET_break (MHD_YES ==
-                  MHD_add_response_header (response,
-                                           MHD_HTTP_HEADER_CONNECTION,
-                                           "close"));
-}
-
-
-/**
- * Send a response indicating an external error.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param hint hint about the error's nature
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_external_error (struct MHD_Connection *connection,
-                                  enum TALER_ErrorCode ec,
-                                  const char *hint)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_BAD_REQUEST,
-                                      "{s:I, s:s}",
-                                      "code", (json_int_t) ec,
-                                      "hint", hint);
-}
-
-
-/**
- * Send a response indicating a missing argument.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param param_name the parameter that is missing
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_arg_missing (struct MHD_Connection *connection,
-                               enum TALER_ErrorCode ec,
-                               const char *param_name)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_BAD_REQUEST,
-                                      "{s:s, s:I, s:s}",
-                                      "error", "missing parameter",
-                                      "code", (json_int_t) ec,
-                                      "parameter", param_name);
-}
-
-
-/**
- * Send a response indicating an invalid argument.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param param_name the parameter that is invalid
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_arg_invalid (struct MHD_Connection *connection,
-                               enum TALER_ErrorCode ec,
-                               const char *param_name)
-{
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_BAD_REQUEST,
-                                      "{s:s, s:I, s:s}",
-                                      "error", "invalid parameter",
-                                      "code", (json_int_t) ec,
-                                      "parameter", param_name);
-}
-
-
-/* end of taler-exchange-httpd_responses.c */
diff --git a/src/sync/sync-httpd_responses.h b/src/sync/sync-httpd_responses.h
deleted file mode 100644
index 4ff4002..0000000
--- a/src/sync/sync-httpd_responses.h
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014-2017 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, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file sync-httpd_responses.h
- * @brief API for generating the various replies of the exchange; these
- *        functions are called SH_RESPONSE_reply_ and they generate
- *        and queue MHD response objects for a given connection.
- * @author Florian Dold
- * @author Benedikt Mueller
- * @author Christian Grothoff
- */
-#ifndef sync_HTTPD_RESPONSES_H
-#define sync_HTTPD_RESPONSES_H
-#include "sync-httpd.h"
-#include <taler/taler_util.h>
-#include <taler/taler_json_lib.h>
-#include <gnunet/gnunet_util_lib.h>
-
-
-/**
- * Make JSON response object.
- *
- * @param json the json object
- * @return MHD response object
- */
-struct MHD_Response *
-SH_RESPONSE_make_json (const json_t *json);
-
-
-/**
- * Send JSON object as response.
- *
- * @param connection the MHD connection
- * @param json the json object
- * @param response_code the http response code
- * @return MHD result code
- */
-int
-SH_RESPONSE_reply_json (struct MHD_Connection *connection,
-                        const json_t *json,
-                        unsigned int response_code);
-
-
-/**
- * Make JSON response object.
- *
- * @param fmt format string for pack
- * @param ... varargs
- * @return MHD response object
- */
-struct MHD_Response *
-SH_RESPONSE_make_json_pack (const char *fmt,
-                            ...);
-
-
-/**
- * Function to call to handle the request by building a JSON
- * reply from a format string and varargs.
- *
- * @param connection the MHD connection to handle
- * @param response_code HTTP response code to use
- * @param fmt format string for pack
- * @param ... varargs
- * @return MHD result code
- */
-int
-SH_RESPONSE_reply_json_pack (struct MHD_Connection *connection,
-                             unsigned int response_code,
-                             const char *fmt,
-                             ...);
-
-
-/**
- * Create a response indicating an internal error.
- *
- * @param ec error code to return
- * @param hint hint about the internal error's nature
- * @return a MHD response object
- */
-struct MHD_Response *
-SH_RESPONSE_make_error (enum TALER_ErrorCode ec,
-                        const char *hint);
-
-
-/**
- * Send a response indicating an internal error.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param hint hint about the internal error's nature
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_internal_error (struct MHD_Connection *connection,
-                                  enum TALER_ErrorCode ec,
-                                  const char *hint);
-
-
-/**
- * Send a response indicating that the request was too big.
- *
- * @param connection the MHD connection to use
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_request_too_large (struct MHD_Connection *connection);
-
-
-/**
- * Send a response indicating that we did not find the @a object
- * needed for the reply.
- *
- * @param connection the MHD connection to use
- * @param response_code response code to use
- * @param ec error code to return
- * @param msg human-readable diagnostic
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_rc (struct MHD_Connection *connection,
-                      unsigned int response_code,
-                      enum TALER_ErrorCode ec,
-                      const char *msg);
-
-
-/**
- * Send a response indicating that the JSON was malformed.
- *
- * @param connection the MHD connection to use
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_invalid_json (struct MHD_Connection *connection);
-
-
-/**
- * Send a response indicating that we did not find the @a object
- * needed for the reply.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param object name of the object we did not find
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_not_found (struct MHD_Connection *connection,
-                             enum TALER_ErrorCode ec,
-                             const char *object);
-
-
-/**
- * Send a response indicating that the request was malformed.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param issue description of what was wrong with the request
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_bad_request (struct MHD_Connection *connection,
-                               enum TALER_ErrorCode ec,
-                               const char *issue);
-
-
-/**
- * Add headers we want to return in every response.
- * Useful for testing, like if we want to always close
- * connections.
- *
- * @param response response to modify
- */
-void
-SH_RESPONSE_add_global_headers (struct MHD_Response *response);
-
-
-/**
- * Send a response indicating an external error.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param hint hint about the error's nature
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_external_error (struct MHD_Connection *connection,
-                                  enum TALER_ErrorCode ec,
-                                  const char *hint);
-
-
-/**
- * Send a response indicating a missing argument.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param param_name the parameter that is missing
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_arg_missing (struct MHD_Connection *connection,
-                               enum TALER_ErrorCode ec,
-                               const char *param_name);
-
-
-/**
- * Send a response indicating an invalid argument.
- *
- * @param connection the MHD connection to use
- * @param ec error code to return
- * @param param_name the parameter that is invalid
- * @return a MHD result code
- */
-int
-SH_RESPONSE_reply_arg_invalid (struct MHD_Connection *connection,
-                               enum TALER_ErrorCode ec,
-                               const char *param_name);
-
-#endif
diff --git a/src/sync/sync-httpd_terms.c b/src/sync/sync-httpd_terms.c
index a96e4d5..2528ff0 100644
--- a/src/sync/sync-httpd_terms.c
+++ b/src/sync/sync-httpd_terms.c
@@ -19,7 +19,6 @@
  * @author Christian Grothoff
  */
 #include "platform.h"
-#include "sync-httpd_responses.h"
 #include "sync-httpd_terms.h"
 #include <taler/taler_json_lib.h>
 
@@ -41,13 +40,13 @@ SH_handler_terms (struct SH_RequestHandler *rh,
                   const char *upload_data,
                   size_t *upload_data_size)
 {
-  return SH_RESPONSE_reply_json_pack (connection,
-                                      MHD_HTTP_OK,
-                                      "{s:I, s:o, s:s}",
-                                      "storage_limit_in_megabytes",
-                                      (json_int_t) SH_upload_limit_mb,
-                                      "annual_fee",
-                                      TALER_JSON_from_amount (&SH_annual_fee),
-                                      "version",
-                                      "0.0");
+  return TALER_MHD_reply_json_pack (connection,
+                                    MHD_HTTP_OK,
+                                    "{s:I, s:o, s:s}",
+                                    "storage_limit_in_megabytes",
+                                    (json_int_t) SH_upload_limit_mb,
+                                    "annual_fee",
+                                    TALER_JSON_from_amount (&SH_annual_fee),
+                                    "version",
+                                    "0.0");
 }

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