merchant

merchant_api_post-private-otp-devices.c (9166B)

---

 /*
   This file is part of TALER
   Copyright (C) 2022-2026 Taler Systems SA
 
   TALER is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1,
   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 Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General
   Public License along with TALER; see the file COPYING.LGPL.
   If not, see <http://www.gnu.org/licenses/>
 */
 /**
  * @file src/lib/merchant_api_post-private-otp-devices.c
  * @brief Implementation of the POST /private/otp-devices request
  * @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 <gnunet/gnunet_curl_lib.h>
 #include <taler/merchant/post-private-otp-devices.h>
 #include "merchant_api_curl_defaults.h"
 #include "merchant_api_common.h"
 #include <taler/taler_json_lib.h>
 #include <taler/taler_curl_lib.h>
 
 
 /**
  * Handle for a POST /private/otp-devices operation.
  */
 struct TALER_MERCHANT_PostPrivateOtpDevicesHandle
 {
   /**
    * Base URL of the merchant backend.
    */
   char *base_url;
 
   /**
    * The full URL for this request.
    */
   char *url;
 
   /**
    * Handle for the request.
    */
   struct GNUNET_CURL_Job *job;
 
   /**
    * Function to call with the result.
    */
   TALER_MERCHANT_PostPrivateOtpDevicesCallback cb;
 
   /**
    * Closure for @a cb.
    */
   TALER_MERCHANT_POST_PRIVATE_OTP_DEVICES_RESULT_CLOSURE *cb_cls;
 
   /**
    * Reference to the execution context.
    */
   struct GNUNET_CURL_Context *ctx;
 
   /**
    * Minor context that holds body and headers.
    */
   struct TALER_CURL_PostContext post_ctx;
 
   /**
    * OTP device identifier.
    */
   char *otp_device_id;
 
   /**
    * Human-readable description.
    */
   char *otp_device_description;
 
   /**
    * Base32-encoded OTP secret key (or NULL).
    */
   char *otp_key;
 
   /**
    * OTP algorithm to use.
    */
   enum TALER_MerchantConfirmationAlgorithm otp_algorithm;
 
   /**
    * Initial counter value (for HOTP).
    */
   uint64_t otp_ctr;
 
   /**
    * True if @e otp_ctr was explicitly set via options.
    */
   bool have_otp_ctr;
 };
 
 
 /**
  * Function called when we're done processing the
  * HTTP POST /private/otp-devices request.
  *
  * @param cls the `struct TALER_MERCHANT_PostPrivateOtpDevicesHandle`
  * @param response_code HTTP response code, 0 on error
  * @param response response body, NULL if not in JSON
  */
 static void
 handle_post_otp_devices_finished (void *cls,
                                   long response_code,
                                   const void *response)
 {
   struct TALER_MERCHANT_PostPrivateOtpDevicesHandle *ppoh = cls;
   const json_t *json = response;
   struct TALER_MERCHANT_PostPrivateOtpDevicesResponse odr = {
     .hr.http_status = (unsigned int) response_code,
     .hr.reply = json
   };
 
   ppoh->job = NULL;
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "POST /private/otp-devices completed with response code %u\n",
               (unsigned int) response_code);
   switch (response_code)
   {
   case 0:
     odr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
     break;
   case MHD_HTTP_NO_CONTENT:
     break;
   case MHD_HTTP_OK:
     {
       struct GNUNET_JSON_Specification spec[] = {
         GNUNET_JSON_spec_string ("otp_device_pub",
                                  &odr.details.ok.otp_device_pub),
         GNUNET_JSON_spec_end ()
       };
 
       if (GNUNET_OK !=
           GNUNET_JSON_parse (json,
                              spec,
                              NULL, NULL))
       {
         GNUNET_break_op (0);
         odr.hr.http_status = 0;
         odr.hr.ec = TALER_EC_GENERIC_REPLY_MALFORMED;
       }
       break;
     }
   case MHD_HTTP_BAD_REQUEST:
     odr.hr.ec = TALER_JSON_get_error_code (json);
     odr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_UNAUTHORIZED:
     odr.hr.ec = TALER_JSON_get_error_code (json);
     odr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_FORBIDDEN:
     odr.hr.ec = TALER_JSON_get_error_code (json);
     odr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_NOT_FOUND:
     odr.hr.ec = TALER_JSON_get_error_code (json);
     odr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_CONFLICT:
     odr.hr.ec = TALER_JSON_get_error_code (json);
     odr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   case MHD_HTTP_INTERNAL_SERVER_ERROR:
     odr.hr.ec = TALER_JSON_get_error_code (json);
     odr.hr.hint = TALER_JSON_get_error_hint (json);
     break;
   default:
     TALER_MERCHANT_parse_error_details_ (json,
                                          response_code,
                                          &odr.hr);
     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                 "Unexpected response code %u/%d\n",
                 (unsigned int) response_code,
                 (int) odr.hr.ec);
     GNUNET_break_op (0);
     break;
   }
   ppoh->cb (ppoh->cb_cls,
             &odr);
   TALER_MERCHANT_post_private_otp_devices_cancel (ppoh);
 }
 
 
 struct TALER_MERCHANT_PostPrivateOtpDevicesHandle *
 TALER_MERCHANT_post_private_otp_devices_create (
   struct GNUNET_CURL_Context *ctx,
   const char *url,
   const char *otp_device_id,
   const char *otp_device_description,
   const char *otp_key,
   enum TALER_MerchantConfirmationAlgorithm otp_algorithm)
 {
   struct TALER_MERCHANT_PostPrivateOtpDevicesHandle *ppoh;
 
   ppoh = GNUNET_new (struct TALER_MERCHANT_PostPrivateOtpDevicesHandle);
   ppoh->ctx = ctx;
   ppoh->base_url = GNUNET_strdup (url);
   ppoh->otp_device_id = GNUNET_strdup (otp_device_id);
   ppoh->otp_device_description = GNUNET_strdup (otp_device_description);
   if (NULL != otp_key)
     ppoh->otp_key = GNUNET_strdup (otp_key);
   ppoh->otp_algorithm = otp_algorithm;
   return ppoh;
 }
 
 
 enum GNUNET_GenericReturnValue
 TALER_MERCHANT_post_private_otp_devices_set_options_ (
   struct TALER_MERCHANT_PostPrivateOtpDevicesHandle *ppoh,
   unsigned int num_options,
   const struct TALER_MERCHANT_PostPrivateOtpDevicesOptionValue *options)
 {
   for (unsigned int i = 0; i < num_options; i++)
   {
     switch (options[i].option)
     {
     case TALER_MERCHANT_POST_PRIVATE_OTP_DEVICES_OPTION_END:
       return GNUNET_OK;
     case TALER_MERCHANT_POST_PRIVATE_OTP_DEVICES_OPTION_OTP_CTR:
       ppoh->otp_ctr = options[i].details.otp_ctr;
       ppoh->have_otp_ctr = true;
       break;
     default:
       GNUNET_break (0);
       return GNUNET_SYSERR;
     }
   }
   return GNUNET_OK;
 }
 
 
 enum TALER_ErrorCode
 TALER_MERCHANT_post_private_otp_devices_start (
   struct TALER_MERCHANT_PostPrivateOtpDevicesHandle *ppoh,
   TALER_MERCHANT_PostPrivateOtpDevicesCallback cb,
   TALER_MERCHANT_POST_PRIVATE_OTP_DEVICES_RESULT_CLOSURE *cb_cls)
 {
   json_t *req_obj;
   CURL *eh;
 
   ppoh->cb = cb;
   ppoh->cb_cls = cb_cls;
   ppoh->url = TALER_url_join (ppoh->base_url,
                               "private/otp-devices",
                               NULL);
   if (NULL == ppoh->url)
     return TALER_EC_GENERIC_CONFIGURATION_INVALID;
   req_obj = GNUNET_JSON_PACK (
     GNUNET_JSON_pack_string ("otp_device_id",
                              ppoh->otp_device_id),
     GNUNET_JSON_pack_string ("otp_device_description",
                              ppoh->otp_device_description),
     GNUNET_JSON_pack_uint64 ("otp_algorithm",
                              (uint32_t) ppoh->otp_algorithm),
     GNUNET_JSON_pack_allow_null (
       GNUNET_JSON_pack_string ("otp_key",
                                ppoh->otp_key)),
     GNUNET_JSON_pack_uint64 ("otp_ctr",
                              ppoh->otp_ctr));
   eh = TALER_MERCHANT_curl_easy_get_ (ppoh->url);
   if ( (NULL == eh) ||
        (GNUNET_OK !=
         TALER_curl_easy_post (&ppoh->post_ctx,
                               eh,
                               req_obj)) )
   {
     GNUNET_break (0);
     json_decref (req_obj);
     if (NULL != eh)
       curl_easy_cleanup (eh);
     return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
   }
   json_decref (req_obj);
   ppoh->job = GNUNET_CURL_job_add2 (ppoh->ctx,
                                     eh,
                                     ppoh->post_ctx.headers,
                                     &handle_post_otp_devices_finished,
                                     ppoh);
   if (NULL == ppoh->job)
     return TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
   return TALER_EC_NONE;
 }
 
 
 void
 TALER_MERCHANT_post_private_otp_devices_cancel (
   struct TALER_MERCHANT_PostPrivateOtpDevicesHandle *ppoh)
 {
   if (NULL != ppoh->job)
   {
     GNUNET_CURL_job_cancel (ppoh->job);
     ppoh->job = NULL;
   }
   TALER_curl_easy_post_finished (&ppoh->post_ctx);
   GNUNET_free (ppoh->otp_device_id);
   GNUNET_free (ppoh->otp_device_description);
   GNUNET_free (ppoh->otp_key);
   GNUNET_free (ppoh->url);
   GNUNET_free (ppoh->base_url);
   GNUNET_free (ppoh);
 }
 
 
 /* end of merchant_api_post-private-otp-devices-new.c */