renaming mint->exchange

1 files changed, 284 insertions, 0 deletions

diff --git a/src/exchange-lib/exchange_api_wire_deposits.c b/src/exchange-lib/exchange_api_wire_deposits.c
new file mode 100644
index 000000000..281ae2097
--- /dev/null
+++ b/src/exchange-lib/exchange_api_wire_deposits.c
@@ -0,0 +1,284 @@
+/*
+  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 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, If not, see
+  <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange-lib/exchange_api_wire_deposits.c
+ * @brief Implementation of the /wire/deposits request of the exchange's HTTP API
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <curl/curl.h>
+#include <jansson.h>
+#include <microhttpd.h> /* just for HTTP status codes */
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_exchange_service.h"
+#include "exchange_api_common.h"
+#include "exchange_api_json.h"
+#include "exchange_api_context.h"
+#include "exchange_api_handle.h"
+#include "taler_signatures.h"
+
+
+/**
+ * @brief A /wire/deposits Handle
+ */
+struct TALER_EXCHANGE_WireDepositsHandle
+{
+
+  /**
+   * The connection to exchange this request handle will use
+   */
+  struct TALER_EXCHANGE_Handle *exchange;
+
+  /**
+   * The url for this request.
+   */
+  char *url;
+
+  /**
+   * Handle for the request.
+   */
+  struct MAC_Job *job;
+
+  /**
+   * Function to call with the result.
+   */
+  TALER_EXCHANGE_WireDepositsCallback cb;
+
+  /**
+   * Closure for @a cb.
+   */
+  void *cb_cls;
+
+  /**
+   * Download buffer
+   */
+  struct MAC_DownloadBuffer db;
+
+};
+
+
+/**
+ * Function called when we're done processing the
+ * HTTP /wire/deposits request.
+ *
+ * @param cls the `struct TALER_EXCHANGE_WireDepositsHandle`
+ * @param eh the curl request handle
+ */
+static void
+handle_wire_deposits_finished (void *cls,
+                               CURL *eh)
+{
+  struct TALER_EXCHANGE_WireDepositsHandle *wdh = cls;
+  long response_code;
+  json_t *json;
+
+  wdh->job = NULL;
+  json = MAC_download_get_result (&wdh->db,
+                                  eh,
+                                  &response_code);
+  switch (response_code)
+  {
+  case 0:
+    break;
+  case MHD_HTTP_OK:
+    {
+      json_t *details_j;
+      struct GNUNET_HashCode h_wire;
+      struct TALER_Amount total_amount;
+      struct TALER_MerchantPublicKeyP merchant_pub;
+      unsigned int num_details;
+      struct MAJ_Specification spec[] = {
+        MAJ_spec_fixed_auto ("H_wire", &h_wire),
+        MAJ_spec_fixed_auto ("merchant_pub", &merchant_pub),
+        MAJ_spec_amount ("total_amount", &total_amount),
+        MAJ_spec_json ("details", &details_j),
+        MAJ_spec_end
+      };
+
+      if (GNUNET_OK !=
+          MAJ_parse_json (json,
+                          spec))
+      {
+        GNUNET_break_op (0);
+        response_code = 0;
+        break;
+      }
+      num_details = json_array_size (details_j);
+      {
+        struct TALER_WireDepositDetails details[num_details];
+        unsigned int i;
+
+        for (i=0;i<num_details;i++)
+        {
+          struct TALER_WireDepositDetails *detail = &details[i];
+          struct json_t *detail_j = json_array_get (details_j, i);
+          struct MAJ_Specification spec_detail[] = {
+            MAJ_spec_fixed_auto ("H_contract", &detail->h_contract),
+            MAJ_spec_amount ("deposit_value", &detail->coin_value),
+            MAJ_spec_amount ("deposit_fee", &detail->coin_fee),
+            MAJ_spec_uint64 ("transaction_id", &detail->transaction_id),
+            MAJ_spec_fixed_auto ("coin_pub", &detail->coin_pub),
+            MAJ_spec_end
+          };
+
+          if (GNUNET_OK !=
+              MAJ_parse_json (detail_j,
+                              spec_detail))
+          {
+            GNUNET_break_op (0);
+            response_code = 0;
+            break;
+          }
+        }
+        if (0 == response_code)
+          break;
+        wdh->cb (wdh->cb_cls,
+                 response_code,
+                 json,
+                 &h_wire,
+                 &total_amount,
+                 num_details,
+                 details);
+        json_decref (json);
+        TALER_EXCHANGE_wire_deposits_cancel (wdh);
+        return;
+      }
+    }
+    break;
+  case MHD_HTTP_BAD_REQUEST:
+    /* This should never happen, either us or the exchange is buggy
+       (or API version conflict); just pass JSON reply to the application */
+    break;
+  case MHD_HTTP_UNAUTHORIZED:
+    /* Nothing really to verify, exchange says one of the signatures is
+       invalid; as we checked them, this should never happen, we
+       should pass the JSON reply to the application */
+    break;
+  case MHD_HTTP_NOT_FOUND:
+    /* Exchange does not know about transaction;
+       we should pass the reply to the application */
+    break;
+  case MHD_HTTP_INTERNAL_SERVER_ERROR:
+    /* Server had an internal issue; we should retry, but this API
+       leaves this to the application */
+    break;
+  default:
+    /* unexpected response code */
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Unexpected response code %u\n",
+                response_code);
+    GNUNET_break (0);
+    response_code = 0;
+    break;
+  }
+  wdh->cb (wdh->cb_cls,
+           response_code,
+           json,
+           NULL, NULL, 0, NULL);
+  json_decref (json);
+  TALER_EXCHANGE_wire_deposits_cancel (wdh);
+}
+
+
+/**
+ * Query the exchange about which transactions were combined
+ * to create a wire transfer.
+ *
+ * @param exchange exchange to query
+ * @param wtid raw wire transfer identifier to get information about
+ * @param cb callback to call
+ * @param cb_cls closure for @a cb
+ * @return handle to cancel operation
+ */
+struct TALER_EXCHANGE_WireDepositsHandle *
+TALER_EXCHANGE_wire_deposits (struct TALER_EXCHANGE_Handle *exchange,
+                          const struct TALER_WireTransferIdentifierRawP *wtid,
+                          TALER_EXCHANGE_WireDepositsCallback cb,
+                          void *cb_cls)
+{
+  struct TALER_EXCHANGE_WireDepositsHandle *wdh;
+  struct TALER_EXCHANGE_Context *ctx;
+  char *buf;
+  char *path;
+  CURL *eh;
+
+  if (GNUNET_YES !=
+      MAH_handle_is_ready (exchange))
+  {
+    GNUNET_break (0);
+    return NULL;
+  }
+
+  wdh = GNUNET_new (struct TALER_EXCHANGE_WireDepositsHandle);
+  wdh->exchange = exchange;
+  wdh->cb = cb;
+  wdh->cb_cls = cb_cls;
+
+  buf = GNUNET_STRINGS_data_to_string_alloc (wtid,
+                                             sizeof (struct TALER_WireTransferIdentifierRawP));
+  GNUNET_asprintf (&path,
+                   "/wire/deposits?wtid=%s",
+                   buf);
+  wdh->url = MAH_path_to_url (wdh->exchange,
+                              path);
+  GNUNET_free (buf);
+  GNUNET_free (path);
+
+  eh = curl_easy_init ();
+  GNUNET_assert (CURLE_OK ==
+                 curl_easy_setopt (eh,
+                                   CURLOPT_URL,
+                                   wdh->url));
+  GNUNET_assert (CURLE_OK ==
+                 curl_easy_setopt (eh,
+                                   CURLOPT_WRITEFUNCTION,
+                                   &MAC_download_cb));
+  GNUNET_assert (CURLE_OK ==
+                 curl_easy_setopt (eh,
+                                   CURLOPT_WRITEDATA,
+                                   &wdh->db));
+  ctx = MAH_handle_to_context (exchange);
+  wdh->job = MAC_job_add (ctx,
+                          eh,
+                          GNUNET_YES,
+                          &handle_wire_deposits_finished,
+                          wdh);
+  return wdh;
+}
+
+
+/**
+ * Cancel wire deposits request.  This function cannot be used on a request
+ * handle if a response is already served for it.
+ *
+ * @param wdh the wire deposits request handle
+ */
+void
+TALER_EXCHANGE_wire_deposits_cancel (struct TALER_EXCHANGE_WireDepositsHandle *wdh)
+{
+  if (NULL != wdh->job)
+  {
+    MAC_job_cancel (wdh->job);
+    wdh->job = NULL;
+  }
+  GNUNET_free_non_null (wdh->db.buf);
+  GNUNET_free (wdh->url);
+  GNUNET_free (wdh);
+}
+
+
+/* end of exchange_api_wire_deposits.c */