adding mint-lib logic to execute /wire/deposits requests

8 files changed, 359 insertions, 12 deletions

diff --git a/src/include/taler_mint_service.h b/src/include/taler_mint_service.h
index 070f77f0..b151cb00 100644
--- a/src/include/taler_mint_service.h
+++ b/src/include/taler_mint_service.h
@@ -1086,7 +1086,7 @@ struct TALER_WireDepositDetails
   /**
    * Value of the deposit (including fee).
    */
-  struct TALER_Amount coin_contribution;
+  struct TALER_Amount coin_value;
 
   /**
    * Fee charged by the mint for the deposit.
diff --git a/src/mint-lib/Makefile.am b/src/mint-lib/Makefile.am
index 3ee1f5a1..171a4246 100644
--- a/src/mint-lib/Makefile.am
+++ b/src/mint-lib/Makefile.am
@@ -24,7 +24,8 @@ libtalermint_la_SOURCES = \
   mint_api_refresh.c \
   mint_api_refresh_link.c \
   mint_api_reserve.c \
-  mint_api_wire.c
+  mint_api_wire.c \
+  mint_api_wire_deposits.c
 
 libtalermint_la_LIBADD = \
   -lgnunetutil \
diff --git a/src/mint-lib/mint_api_json.c b/src/mint-lib/mint_api_json.c
index a728a549..7de33e5e 100644
--- a/src/mint-lib/mint_api_json.c
+++ b/src/mint-lib/mint_api_json.c
@@ -232,6 +232,20 @@ parse_json (json_t *root,
       }
       break;
 
+    case MAJ_CMD_UINT64:
+      {
+        json_int_t val;
+
+        if (! json_is_integer (pos))
+        {
+          GNUNET_break_op (0);
+          return i;
+        }
+        val = json_integer_value (pos);
+        *spec[i].details.u64 = (uint64_t) val;
+      }
+      break;
+
     case MAJ_CMD_JSON_OBJECT:
       {
         if (! (json_is_object (pos) || json_is_array (pos)) )
@@ -429,6 +443,26 @@ MAJ_spec_uint16 (const char *name,
 
 
 /**
+ * 64-bit integer.
+ *
+ * @param name name of the JSON field
+ * @param[out] u64 where to store the integer found under @a name
+ */
+struct MAJ_Specification
+MAJ_spec_uint64 (const char *name,
+                 uint64_t *u64)
+{
+  struct MAJ_Specification ret =
+    {
+      .cmd = MAJ_CMD_UINT64,
+      .field = name,
+      .details.u64 = u64
+    };
+  return ret;
+}
+
+
+/**
  * JSON object.
  *
  * @param name name of the JSON field
diff --git a/src/mint-lib/mint_api_json.h b/src/mint-lib/mint_api_json.h
index 68809059..6bc3a557 100644
--- a/src/mint-lib/mint_api_json.h
+++ b/src/mint-lib/mint_api_json.h
@@ -79,6 +79,11 @@ enum MAJ_Command
   MAJ_CMD_UINT16,
 
   /**
+   * Parse `uint64_t` integer at the current position.
+   */
+  MAJ_CMD_UINT64,
+
+  /**
    * Parse JSON object at the current position.
    */
   MAJ_CMD_JSON_OBJECT,
@@ -192,6 +197,11 @@ struct MAJ_Specification
     uint16_t *u16;
 
     /**
+     * Where to store 64-bit integer.
+     */
+    uint64_t *u64;
+
+    /**
      * Where to store a JSON object.
      */
     json_t **obj;
@@ -283,6 +293,17 @@ MAJ_spec_uint16 (const char *name,
 
 
 /**
+ * 64-bit integer.
+ *
+ * @param name name of the JSON field
+ * @param[out] u64 where to store the integer found under @a name
+ */
+struct MAJ_Specification
+MAJ_spec_uint64 (const char *name,
+                 uint64_t *u64);
+
+
+/**
  * JSON object.
  *
  * @param name name of the JSON field
diff --git a/src/mint-lib/mint_api_wire_deposits.c b/src/mint-lib/mint_api_wire_deposits.c
new file mode 100644
index 00000000..6fd4d75d
--- /dev/null
+++ b/src/mint-lib/mint_api_wire_deposits.c
@@ -0,0 +1,296 @@
+/*
+  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 mint-lib/mint_api_wire_deposits.c
+ * @brief Implementation of the /wire/deposits request of the mint'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_mint_service.h"
+#include "mint_api_common.h"
+#include "mint_api_json.h"
+#include "mint_api_context.h"
+#include "mint_api_handle.h"
+#include "taler_signatures.h"
+
+
+/**
+ * @brief A /wire/deposits Handle
+ */
+struct TALER_MINT_WireDepositsHandle
+{
+
+  /**
+   * The connection to mint this request handle will use
+   */
+  struct TALER_MINT_Handle *mint;
+
+  /**
+   * The url for this request.
+   */
+  char *url;
+
+  /**
+   * JSON encoding of the request to POST.
+   */
+  char *json_enc;
+
+  /**
+   * Handle for the request.
+   */
+  struct MAC_Job *job;
+
+  /**
+   * Function to call with the result.
+   */
+  TALER_MINT_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_MINT_WireDepositsHandle`
+ * @param eh the curl request handle
+ */
+static void
+handle_wire_deposits_finished (void *cls,
+                               CURL *eh)
+{
+  struct TALER_MINT_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_MINT_wire_deposits_cancel (wdh);
+        return;
+      }
+    }
+    break;
+  case MHD_HTTP_BAD_REQUEST:
+    /* This should never happen, either us or the mint is buggy
+       (or API version conflict); just pass JSON reply to the application */
+    break;
+  case MHD_HTTP_UNAUTHORIZED:
+    /* Nothing really to verify, mint 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:
+    /* Mint 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_MINT_wire_deposits_cancel (wdh);
+}
+
+
+/**
+ * Query the mint about which transactions were combined
+ * to create a wire transfer.
+ *
+ * @param mint mint 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_MINT_WireDepositsHandle *
+TALER_MINT_wire_deposits (struct TALER_MINT_Handle *mint,
+                          const struct TALER_WireTransferIdentifierRawP *wtid,
+                          TALER_MINT_WireDepositsCallback cb,
+                          void *cb_cls)
+{
+  struct TALER_MINT_WireDepositsHandle *wdh;
+  struct TALER_MINT_Context *ctx;
+  json_t *wdh_obj;
+  CURL *eh;
+
+  if (GNUNET_YES !=
+      MAH_handle_is_ready (mint))
+  {
+    GNUNET_break (0);
+    return NULL;
+  }
+
+  wdh_obj = json_pack ("{s:o}",
+                       "wtid", TALER_json_from_data (wtid,
+                                                     sizeof (struct TALER_WireTransferIdentifierRawP)));
+
+  wdh = GNUNET_new (struct TALER_MINT_WireDepositsHandle);
+  wdh->mint = mint;
+  wdh->cb = cb;
+  wdh->cb_cls = cb_cls;
+  wdh->url = MAH_path_to_url (mint, "/wire/deposits");
+
+  eh = curl_easy_init ();
+  GNUNET_assert (NULL != (wdh->json_enc =
+                          json_dumps (wdh_obj,
+                                      JSON_COMPACT)));
+  json_decref (wdh_obj);
+  GNUNET_assert (CURLE_OK ==
+                 curl_easy_setopt (eh,
+                                   CURLOPT_URL,
+                                   wdh->url));
+  GNUNET_assert (CURLE_OK ==
+                 curl_easy_setopt (eh,
+                                   CURLOPT_POSTFIELDS,
+                                   wdh->json_enc));
+  GNUNET_assert (CURLE_OK ==
+                 curl_easy_setopt (eh,
+                                   CURLOPT_POSTFIELDSIZE,
+                                   strlen (wdh->json_enc)));
+  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 (mint);
+  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_MINT_wire_deposits_cancel (struct TALER_MINT_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->json_enc);
+  GNUNET_free (wdh);
+}
+
+
+/* end of mint_api_wire_deposits.c */
diff --git a/src/mint/taler-mint-httpd_db.c b/src/mint/taler-mint-httpd_db.c
index fb4ee1b7..19c21398 100644
--- a/src/mint/taler-mint-httpd_db.c
+++ b/src/mint/taler-mint-httpd_db.c
@@ -1704,7 +1704,7 @@ handle_transaction_data (void *cls,
  */
 int
 TMH_DB_execute_wire_deposits (struct MHD_Connection *connection,
-                             const struct TALER_WireTransferIdentifierP *wtid)
+                             const struct TALER_WireTransferIdentifierRawP *wtid)
 {
   int ret;
   struct WtidTransactionContext ctx;
@@ -1720,7 +1720,7 @@ TMH_DB_execute_wire_deposits (struct MHD_Connection *connection,
   ctx.deposits = json_array ();
   ret = TMH_plugin->lookup_wire_transfer (TMH_plugin->cls,
                                           session,
-                                          &wtid->raw,
+                                          wtid,
                                           &handle_transaction_data,
                                           &ctx);
   if (GNUNET_SYSERR == ret)
diff --git a/src/mint/taler-mint-httpd_db.h b/src/mint/taler-mint-httpd_db.h
index e366112d..0327bef2 100644
--- a/src/mint/taler-mint-httpd_db.h
+++ b/src/mint/taler-mint-httpd_db.h
@@ -202,7 +202,7 @@ TMH_DB_execute_admin_add_incoming (struct MHD_Connection *connection,
  */
 int
 TMH_DB_execute_wire_deposits (struct MHD_Connection *connection,
-                              const struct TALER_WireTransferIdentifierP *wtid);
+                              const struct TALER_WireTransferIdentifierRawP *wtid);
 
 
 /**
diff --git a/src/mint/taler-mint-httpd_tracking.c b/src/mint/taler-mint-httpd_tracking.c
index e61b4bae..76293803 100644
--- a/src/mint/taler-mint-httpd_tracking.c
+++ b/src/mint/taler-mint-httpd_tracking.c
@@ -46,22 +46,17 @@ TMH_TRACKING_handler_wire_deposits (struct TMH_RequestHandler *rh,
                                     const char *upload_data,
                                     size_t *upload_data_size)
 {
-  struct TALER_WireTransferIdentifierP wtid;
+  struct TALER_WireTransferIdentifierRawP wtid;
   int res;
 
   res = TMH_PARSE_mhd_request_arg_data (connection,
                                         "wtid",
                                         &wtid,
-                                        sizeof (struct TALER_WireTransferIdentifierP));
+                                        sizeof (struct TALER_WireTransferIdentifierRawP));
   if (GNUNET_SYSERR == res)
     return MHD_NO; /* internal error */
   if (GNUNET_NO == res)
     return MHD_YES; /* parse error */
-  if (wtid.crc8 !=
-      GNUNET_CRYPTO_crc8_n (&wtid.raw,
-                            sizeof (wtid.raw)))
-    return TMH_RESPONSE_reply_arg_invalid (connection,
-                                           "wtid");
   return TMH_DB_execute_wire_deposits (connection,
                                        &wtid);
 }