complete first draft of new SQL schema

1 files changed, 0 insertions, 379 deletions

diff --git a/src/backend/taler-merchant-httpd_refund_increase.c b/src/backend/taler-merchant-httpd_refund_increase.c
deleted file mode 100644
index 5324c619..00000000
--- a/src/backend/taler-merchant-httpd_refund_increase.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
-  This file is part of TALER
-  (C) 2014-2020 Taler Systems SA
-
-  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 General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along with
-  TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file backend/taler-merchant-httpd_refund_increase.c
- * @brief Handle request to increase the refund for an order
- * @author Marcello Stanisci
- */
-#include "platform.h"
-#include <jansson.h>
-#include <taler/taler_signatures.h>
-#include <taler/taler_json_lib.h>
-#include "taler-merchant-httpd.h"
-#include "taler-merchant-httpd_refund.h"
-
-/**
- * How often do we retry the non-trivial refund INSERT database
- * transaction?
- */
-#define MAX_RETRIES 5
-
-
-/**
- * Information we keep for individual calls
- * to requests that parse JSON, but keep no other state.
- */
-struct TMH_JsonParseContext
-{
-
-  /**
-   * This field MUST be first for handle_mhd_completion_callback() to work
-   * when it treats this struct as a `struct TM_HandlerContext`.
-   */
-  struct TM_HandlerContext hc;
-
-  /**
-   * Placeholder for #TALER_MHD_parse_post_json() to keep its internal state.
-   */
-  void *json_parse_context;
-};
-
-
-/**
- * Make a taler://refund URI
- *
- * @param connection MHD connection to take host and path from
- * @param instance_id merchant's instance ID, must not be NULL
- * @param order_id order ID to show a refund for, must not be NULL
- * @returns the URI, must be freed with #GNUNET_free
- */
-static char *
-make_taler_refund_uri (struct MHD_Connection *connection,
-                       const char *instance_id,
-                       const char *order_id)
-{
-  const char *host;
-  const char *forwarded_host;
-  const char *uri_path;
-  const char *uri_instance_id;
-  const char *query;
-  char *result;
-
-  GNUNET_assert (NULL != instance_id);
-  GNUNET_assert (NULL != order_id);
-  host = MHD_lookup_connection_value (connection,
-                                      MHD_HEADER_KIND,
-                                      MHD_HTTP_HEADER_HOST);
-  forwarded_host = MHD_lookup_connection_value (connection,
-                                                MHD_HEADER_KIND,
-                                                "X-Forwarded-Host");
-  if (NULL != forwarded_host)
-    host = forwarded_host;
-  if (NULL == host)
-  {
-    /* Should never happen, at least the host header should be defined */
-    GNUNET_break (0);
-    return NULL;
-  }
-  uri_path = MHD_lookup_connection_value (connection,
-                                          MHD_HEADER_KIND,
-                                          "X-Forwarded-Prefix");
-  if (NULL == uri_path)
-    uri_path = "-";
-  if (0 == strcmp (instance_id,
-                   "default"))
-    uri_instance_id = "-";
-  else
-    uri_instance_id = instance_id;
-  if (GNUNET_YES == TALER_mhd_is_https (connection))
-    query = "";
-  else
-    query = "?insecure=1";
-  GNUNET_assert (0 < GNUNET_asprintf (&result,
-                                      "taler://refund/%s/%s/%s/%s%s",
-                                      host,
-                                      uri_path,
-                                      uri_instance_id,
-                                      order_id,
-                                      query));
-  return result;
-}
-
-
-/**
- * Custom cleanup routine for a `struct TMH_JsonParseContext`.
- *
- * @param hc the `struct TMH_JsonParseContext` to clean up.
- */
-static void
-json_parse_cleanup (struct TM_HandlerContext *hc)
-{
-  struct TMH_JsonParseContext *jpc = (struct TMH_JsonParseContext *) hc;
-
-  TALER_MHD_parse_post_cleanup_callback (jpc->json_parse_context);
-  GNUNET_free (jpc);
-}
-
-
-/**
- * Process a refund request.
- *
- * @param connection HTTP client connection
- * @param mi merchant instance doing the processing
- * @param refund amount to be refunded
- * @param order_id for which order is the refund
- * @param reason reason for the refund
- * @return MHD result code
- */
-static MHD_RESULT
-process_refund (struct MHD_Connection *connection,
-                struct MerchantInstance *mi,
-                const struct TALER_Amount *refund,
-                const char *order_id,
-                const char *reason)
-{
-  json_t *contract_terms;
-  enum GNUNET_DB_QueryStatus qs;
-  enum GNUNET_DB_QueryStatus qsx;
-  struct GNUNET_HashCode h_contract_terms;
-
-  db->preflight (db->cls);
-  /* Convert order id to h_contract_terms */
-  qs = db->find_contract_terms (db->cls,
-                                &contract_terms,
-                                order_id,
-                                &mi->pubkey);
-  if (0 > qs)
-  {
-    /* single, read-only SQL statements should never cause
-       serialization problems */
-    GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR != qs);
-    /* Always report on hard error as well to enable diagnostics */
-    GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR == qs);
-    return TALER_MHD_reply_with_error (connection,
-                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
-                                       TALER_EC_REFUND_LOOKUP_DB_ERROR,
-                                       "An error occurred while retrieving payment data from db");
-  }
-  if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                "Unknown order id given: `%s'\n",
-                order_id);
-    return TALER_MHD_reply_with_error (connection,
-                                       MHD_HTTP_NOT_FOUND,
-                                       TALER_EC_REFUND_ORDER_ID_UNKNOWN,
-                                       "order_id not found in database");
-  }
-
-  if (GNUNET_OK !=
-      TALER_JSON_hash (contract_terms,
-                       &h_contract_terms))
-  {
-    GNUNET_break (0);
-    json_decref (contract_terms);
-    return TALER_MHD_reply_with_error (connection,
-                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
-                                       TALER_EC_INTERNAL_LOGIC_ERROR,
-                                       "Could not hash contract terms");
-  }
-  json_decref (contract_terms);
-  for (unsigned int i = 0; i<MAX_RETRIES; i++)
-  {
-    if (GNUNET_OK !=
-        db->start (db->cls,
-                   "increase refund"))
-    {
-      GNUNET_break (0);
-      return GNUNET_DB_STATUS_HARD_ERROR;
-    }
-    qs = db->increase_refund_for_contract_NT (db->cls,
-                                              &h_contract_terms,
-                                              &mi->pubkey,
-                                              refund,
-                                              reason);
-    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-                "increase refund returned %d\n",
-                qs);
-    if (GNUNET_DB_STATUS_HARD_ERROR == qs)
-    {
-      GNUNET_break (0);
-      db->rollback (db->cls);
-      break;
-    }
-    if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
-    {
-      db->rollback (db->cls);
-      continue;
-    }
-    /* Got one or more deposits */
-    if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
-    {
-      db->rollback (db->cls);
-      break;
-    }
-    qsx = db->commit (db->cls);
-    if (GNUNET_DB_STATUS_HARD_ERROR == qsx)
-    {
-      GNUNET_break (0);
-      qs = qsx;
-      break;
-    }
-    if (GNUNET_DB_STATUS_SOFT_ERROR != qsx)
-      break;
-  }
-  if (0 > qs)
-  {
-    /* Special report if retries insufficient */
-    GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR != qs);
-    /* Always report on hard error as well to enable diagnostics */
-    GNUNET_break (GNUNET_DB_STATUS_HARD_ERROR == qs);
-    return TALER_MHD_reply_with_error (connection,
-                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
-                                       TALER_EC_REFUND_MERCHANT_DB_COMMIT_ERROR,
-                                       "Internal database error or refund amount too big");
-  }
-  if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                "Refusing refund amount %s that is larger than original payment\n",
-                TALER_amount2s (refund));
-    return TALER_MHD_reply_with_error (connection,
-                                       MHD_HTTP_CONFLICT,
-                                       TALER_EC_REFUND_INCONSISTENT_AMOUNT,
-                                       "Amount above payment");
-  }
-
-  /* Resume /public/poll-payments clients that may wait for this refund */
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Awakeing clients on %s waiting for refund of less than %s\n",
-              order_id,
-              TALER_amount2s (refund));
-
-  TMH_long_poll_resume (order_id,
-                        &mi->pubkey,
-                        refund);
-
-  {
-    MHD_RESULT ret;
-    char *taler_refund_uri;
-
-    taler_refund_uri = make_taler_refund_uri (connection,
-                                              mi->id,
-                                              order_id);
-    ret = TALER_MHD_reply_json_pack (
-      connection,
-      MHD_HTTP_OK,
-      "{s:o, s:s}",
-      "h_contract_terms",
-      GNUNET_JSON_from_data_auto (&h_contract_terms),
-      "taler_refund_url",
-      taler_refund_uri);
-    GNUNET_free (taler_refund_uri);
-    return ret;
-  }
-}
-
-
-/**
- * Handle request for increasing the refund associated with
- * a contract.
- *
- * @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
- * @param mi merchant backend instance, never NULL
- * @return MHD result code
- */
-MHD_RESULT
-MH_handler_refund_increase (struct TMH_RequestHandler *rh,
-                            struct MHD_Connection *connection,
-                            void **connection_cls,
-                            const char *upload_data,
-                            size_t *upload_data_size,
-                            struct MerchantInstance *mi)
-{
-  enum GNUNET_GenericReturnValue res;
-  struct TMH_JsonParseContext *ctx;
-  struct TALER_Amount refund;
-  const char *order_id;
-  const char *reason;
-  struct GNUNET_JSON_Specification spec[] = {
-    TALER_JSON_spec_amount ("refund", &refund),
-    GNUNET_JSON_spec_string ("order_id", &order_id),
-    GNUNET_JSON_spec_string ("reason", &reason),
-    GNUNET_JSON_spec_end ()
-  };
-  json_t *root;
-
-  if (NULL == *connection_cls)
-  {
-    ctx = GNUNET_new (struct TMH_JsonParseContext);
-    ctx->hc.cc = &json_parse_cleanup;
-    *connection_cls = ctx;
-  }
-  else
-  {
-    ctx = *connection_cls;
-  }
-
-  res = TALER_MHD_parse_post_json (connection,
-                                   &ctx->json_parse_context,
-                                   upload_data,
-                                   upload_data_size,
-                                   &root);
-  if (GNUNET_SYSERR == res)
-    return MHD_NO;
-  /* the POST's body has to be further fetched */
-  if ( (GNUNET_NO == res) ||
-       (NULL == root) )
-    return MHD_YES;
-
-  res = TALER_MHD_parse_json_data (connection,
-                                   root,
-                                   spec);
-  if (GNUNET_NO == res)
-  {
-    GNUNET_break_op (0);
-    json_decref (root);
-    return MHD_YES;
-  }
-  if (GNUNET_SYSERR == res)
-  {
-    GNUNET_break_op (0);
-    json_decref (root);
-    return TALER_MHD_reply_with_error (connection,
-                                       MHD_HTTP_BAD_REQUEST,
-                                       TALER_EC_JSON_INVALID,
-                                       "Request body does not match specification");
-  }
-  {
-    MHD_RESULT ret;
-
-    ret = process_refund (connection,
-                          mi,
-                          &refund,
-                          order_id,
-                          reason);
-    GNUNET_JSON_parse_free (spec);
-    json_decref (root);
-    return ret;
-  }
-}
-
-
-/* end of taler-merchant-httpd_refund_increase.c */