major refactoring, eliminating wire-plugins and moving towards new bank API. main code compiles, testcases known to fail, code sure not to fully work yet

1 files changed, 0 insertions, 445 deletions

diff --git a/src/bank-lib/bank_api_history.c b/src/bank-lib/bank_api_history.c
deleted file mode 100644
index f5013b85b..000000000
--- a/src/bank-lib/bank_api_history.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2017 GNUnet e.V. & Inria
-
-  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,
-  see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file bank-lib/bank_api_history.c
- * @brief Implementation of the /history[-range]
- *        requests of the bank's HTTP API.
- * @author Christian Grothoff
- * @author Marcello Stanisci
- */
-#include "platform.h"
-#include "bank_api_common.h"
-#include <microhttpd.h> /* just for HTTP status codes */
-#include "taler_signatures.h"
-
-
-/**
- * @brief A /history Handle
- */
-struct TALER_BANK_HistoryHandle
-{
-
-  /**
-   * The url for this request.
-   */
-  char *request_url;
-
-  /**
-   * The base URL of the bank.
-   */
-  char *bank_base_url;
-
-  /**
-   * Handle for the request.
-   */
-  struct GNUNET_CURL_Job *job;
-
-  /**
-   * HTTP authentication-related headers for the request.
-   */
-  struct curl_slist *authh;
-
-  /**
-   * Function to call with the result.
-   */
-  TALER_BANK_HistoryResultCallback hcb;
-
-  /**
-   * Closure for @a cb.
-   */
-  void *hcb_cls;
-};
-
-
-/**
- * Parse history given in JSON format and invoke the callback on each item.
- *
- * @param hh handle to the account history request
- * @param history JSON array with the history
- * @return #GNUNET_OK if history was valid and @a rhistory and @a balance
- *         were set,
- *         #GNUNET_SYSERR if there was a protocol violation in @a history
- */
-static int
-parse_account_history (struct TALER_BANK_HistoryHandle *hh,
-                       const json_t *history)
-{
-  json_t *history_array;
-  char *bank_hostname;
-
-  if (NULL == (history_array = json_object_get (history, "data")))
-  {
-    GNUNET_break_op (0);
-    return GNUNET_SYSERR;
-  }
-  for (unsigned int i = 0; i<json_array_size (history_array); i++)
-  {
-    struct TALER_BANK_TransferDetails td;
-    const char *sign;
-    uint64_t other_account;
-    uint64_t row_id;
-    enum TALER_BANK_Direction direction;
-    struct GNUNET_JSON_Specification hist_spec[] = {
-      GNUNET_JSON_spec_string ("sign",
-                               &sign),
-      TALER_JSON_spec_amount ("amount",
-                              &td.amount),
-      GNUNET_JSON_spec_absolute_time ("date",
-                                      &td.execution_date),
-      GNUNET_JSON_spec_uint64 ("row_id",
-                               &row_id),
-      GNUNET_JSON_spec_string ("wt_subject",
-                               (const char **) &td.wire_transfer_subject),
-      GNUNET_JSON_spec_uint64 ("counterpart",
-                               &other_account),
-      GNUNET_JSON_spec_end ()
-    };
-    json_t *transaction = json_array_get (history_array,
-                                          i);
-
-    if (GNUNET_OK !=
-        GNUNET_JSON_parse (transaction,
-                           hist_spec,
-                           NULL, NULL))
-    {
-      GNUNET_break_op (0);
-      return GNUNET_SYSERR;
-    }
-
-    if (0 == strcasecmp (sign,
-                         "+"))
-      direction = TALER_BANK_DIRECTION_CREDIT;
-    else if (0 == strcasecmp (sign,
-                              "-"))
-      direction = TALER_BANK_DIRECTION_DEBIT;
-    else if (0 == strcasecmp (sign,
-                              "cancel+"))
-      direction = TALER_BANK_DIRECTION_CREDIT | TALER_BANK_DIRECTION_CANCEL;
-    else if (0 == strcasecmp (sign,
-                              "cancel-"))
-      direction = TALER_BANK_DIRECTION_DEBIT | TALER_BANK_DIRECTION_CANCEL;
-    else
-    {
-      GNUNET_break_op (0);
-      GNUNET_JSON_parse_free (hist_spec);
-      return GNUNET_SYSERR;
-    }
-    /* Note, bank_base_url has _always_ the protocol scheme
-     * and it proved to be good at this point.  */
-    bank_hostname = strchr (hh->bank_base_url, ':');
-    GNUNET_assert (NULL != bank_hostname);
-    bank_hostname += 3;
-
-    GNUNET_asprintf (&td.account_url,
-                     ('/' == bank_hostname[strlen (bank_hostname) - 1])
-                     ? "payto://x-taler-bank/%s%llu"
-                     : "payto://x-taler-bank/%s/%llu",
-                     bank_hostname,
-                     (unsigned long long) other_account);
-    hh->hcb (hh->hcb_cls,
-             MHD_HTTP_OK,
-             TALER_EC_NONE,
-             direction,
-             row_id,
-             &td,
-             transaction);
-    GNUNET_free (td.account_url);
-    GNUNET_JSON_parse_free (hist_spec);
-  }
-  return GNUNET_OK;
-}
-
-
-/**
- * Function called when we're done processing the
- * HTTP /history request.
- *
- * @param cls the `struct TALER_BANK_HistoryHandle`
- * @param response_code HTTP response code, 0 on error
- * @param response parsed JSON result, NULL on error
- */
-static void
-handle_history_finished (void *cls,
-                         long response_code,
-                         const void *response)
-{
-  struct TALER_BANK_HistoryHandle *hh = cls;
-  enum TALER_ErrorCode ec;
-  const json_t *j = response;
-
-  hh->job = NULL;
-  switch (response_code)
-  {
-  case 0:
-    ec = TALER_EC_INVALID_RESPONSE;
-    break;
-  case MHD_HTTP_OK:
-    if (GNUNET_OK !=
-        parse_account_history (hh,
-                               j))
-    {
-      GNUNET_break_op (0);
-      response_code = 0;
-      ec = TALER_EC_INVALID_RESPONSE;
-      break;
-    }
-    response_code = MHD_HTTP_NO_CONTENT; /* signal end of list */
-    ec = TALER_EC_NONE;
-    break;
-  case MHD_HTTP_NO_CONTENT:
-    ec = TALER_EC_NONE;
-    break;
-  case MHD_HTTP_BAD_REQUEST:
-    /* This should never happen, either us or the bank is buggy
-       (or API version conflict); just pass JSON reply to the application */
-    ec = TALER_BANK_parse_ec_ (j);
-    break;
-  case MHD_HTTP_FORBIDDEN:
-    /* Access denied */
-    ec = TALER_BANK_parse_ec_ (j);
-    break;
-  case MHD_HTTP_UNAUTHORIZED:
-    /* Nothing really to verify, bank says one of the signatures is
-       invalid; as we checked them, this should never happen, we
-       should pass the JSON reply to the application */
-    ec = TALER_BANK_parse_ec_ (j);
-    break;
-  case MHD_HTTP_NOT_FOUND:
-    /* Nothing really to verify, this should never
-       happen, we should pass the JSON reply to the application */
-    ec = TALER_BANK_parse_ec_ (j);
-    break;
-  case MHD_HTTP_INTERNAL_SERVER_ERROR:
-    /* Server had an internal issue; we should retry, but this API
-       leaves this to the application */
-    ec = TALER_BANK_parse_ec_ (j);
-    break;
-  default:
-    /* unexpected response code */
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Unexpected response code %u\n",
-                (unsigned int) response_code);
-    GNUNET_break (0);
-    ec = TALER_BANK_parse_ec_ (j);
-    response_code = 0;
-    break;
-  }
-  hh->hcb (hh->hcb_cls,
-           response_code,
-           ec,
-           TALER_BANK_DIRECTION_NONE,
-           0LLU,
-           NULL,
-           j);
-  TALER_BANK_history_cancel (hh);
-}
-
-
-/**
- * Backend of both the /history[-range] requests.
- *
- * @param ctx curl context for the event loop
- * @param bank_base_url base URL of the bank.
- * @param urlargs path + URL arguments.
- * @param auth authentication data to use
- * @param hres_cb the callback to call with the transaction
- *        history
- * @param hres_cb_cls closure for the above callback
- * @return NULL if the inputs are invalid (i.e. zero value for
- *         @e num_results). In this case, the callback is not
- *         called.
- */
-static struct TALER_BANK_HistoryHandle *
-put_history_job (struct GNUNET_CURL_Context *ctx,
-                 const char *bank_base_url,
-                 const char *urlargs,
-                 const struct TALER_BANK_AuthenticationData *auth,
-                 TALER_BANK_HistoryResultCallback hres_cb,
-                 void *hres_cb_cls)
-{
-  struct TALER_BANK_HistoryHandle *hh;
-  CURL *eh;
-
-  hh = GNUNET_new (struct TALER_BANK_HistoryHandle);
-  hh->hcb = hres_cb;
-  hh->hcb_cls = hres_cb_cls;
-  hh->bank_base_url = GNUNET_strdup (bank_base_url);
-  hh->request_url = TALER_BANK_path_to_url_ (bank_base_url,
-                                             urlargs);
-
-  hh->authh = TALER_BANK_make_auth_header_ (auth);
-  eh = curl_easy_init ();
-  GNUNET_assert (CURLE_OK ==
-                 curl_easy_setopt (eh,
-                                   CURLOPT_URL,
-                                   hh->request_url));
-  hh->job = GNUNET_CURL_job_add2 (ctx,
-                                  eh,
-                                  hh->authh,
-                                  &handle_history_finished,
-                                  hh);
-  return hh;
-}
-
-
-/**
- * Convert fixed value 'direction' into string.
- *
- * @param direction the value to convert.
- * @return string representation of @a direction.  NULL on error
- */
-static const char *
-conv_direction (enum TALER_BANK_Direction direction)
-{
-  if (TALER_BANK_DIRECTION_NONE == direction)
-  {
-    /* Should just never happen.  */
-    GNUNET_break (0);
-    return NULL;
-  }
-  if (TALER_BANK_DIRECTION_BOTH ==
-      (TALER_BANK_DIRECTION_BOTH & direction))
-    return "both";
-  else if (TALER_BANK_DIRECTION_CREDIT ==
-           (TALER_BANK_DIRECTION_CREDIT & direction))
-    return "credit";
-  else if (TALER_BANK_DIRECTION_DEBIT ==
-           (TALER_BANK_DIRECTION_BOTH & direction)) /*why use 'both' flag?*/
-    return "debit";
-  /* Should just never happen.  */
-  GNUNET_break (0);
-  return NULL;
-}
-
-
-/**
- * Convert fixed value 'direction' into string representation
- * of the "cancel" argument.
- *
- * @param direction the value to convert.
- * @return string representation of @a direction
- */
-static const char *
-conv_cancel (enum TALER_BANK_Direction direction)
-{
-  if (TALER_BANK_DIRECTION_CANCEL ==
-      (TALER_BANK_DIRECTION_CANCEL & direction))
-    return "show";
-  return "omit";
-}
-
-
-/**
- * Request the wire transfer history of a bank account.
- *
- * @param ctx curl context for the event loop
- * @param bank_base_url URL of the bank (used to execute this
- *        request)
- * @param auth authentication data to use
- * @param account_number which account number should we query
- * @param direction what kinds of wire transfers should be
- *        returned
- * @param ascending if GNUNET_YES, history elements will
- *        be returned in chronological order.
- * @param start_row from which row on do we want to get results,
- *        use UINT64_MAX for the latest; exclusive
- * @param num_results how many results do we want;
- *        negative numbers to go into the past, positive numbers
- *        to go into the future starting at @a start_row;
- *        must not be zero.
- * @param hres_cb the callback to call with the transaction
- *        history
- * @param hres_cb_cls closure for the above callback
- * @return NULL if the inputs are invalid (i.e. zero value for
- *         @e num_results). In this case, the callback is not
- *         called.
- */
-struct TALER_BANK_HistoryHandle *
-TALER_BANK_history (struct GNUNET_CURL_Context *ctx,
-                    const char *bank_base_url,
-                    const struct TALER_BANK_AuthenticationData *auth,
-                    uint64_t account_number,
-                    enum TALER_BANK_Direction direction,
-                    unsigned int ascending,
-                    uint64_t start_row,
-                    int64_t num_results,
-                    TALER_BANK_HistoryResultCallback hres_cb,
-                    void *hres_cb_cls)
-{
-  struct TALER_BANK_HistoryHandle *hh;
-  char *url;
-
-  if (0 == num_results)
-  {
-    GNUNET_break (0);
-    return NULL;
-  }
-
-  if (UINT64_MAX == start_row)
-    GNUNET_asprintf (&url,
-                     "/history?auth=basic&account_number=%llu&delta=%lld&direction=%s&cancelled=%s&ordering=%s",
-                     (unsigned long long) account_number,
-                     (long long) num_results,
-                     conv_direction (direction),
-                     conv_cancel (direction),
-                     (GNUNET_YES == ascending) ? "ascending" : "descending");
-  else
-    GNUNET_asprintf (&url,
-                     "/history?auth=basic&account_number=%llu&delta=%lld&direction=%s&cancelled=%s&ordering=%s&start=%llu",
-                     (unsigned long long) account_number,
-                     (long long) num_results,
-                     conv_direction (direction),
-                     conv_cancel (direction),
-                     (GNUNET_YES == ascending) ? "ascending" : "descending",
-                     start_row);
-  hh = put_history_job (ctx,
-                        bank_base_url,
-                        url,
-                        auth,
-                        hres_cb,
-                        hres_cb_cls);
-
-  GNUNET_free (url);
-  return hh;
-}
-
-
-/**
- * Cancel a history request.  This function cannot be
- * used on a request handle if a response is already
- * served for it.
- *
- * @param hh the history request handle
- */
-void
-TALER_BANK_history_cancel (struct TALER_BANK_HistoryHandle *hh)
-{
-  if (NULL != hh->job)
-  {
-    GNUNET_CURL_job_cancel (hh->job);
-    hh->job = NULL;
-  }
-  curl_slist_free_all (hh->authh);
-  GNUNET_free (hh->request_url);
-  GNUNET_free (hh->bank_base_url);
-  GNUNET_free (hh);
-}
-
-
-/* end of bank_api_history.c */