diff options
Diffstat (limited to 'src/lib/exchange_api_add_aml_decision.c')
| -rw-r--r-- | src/lib/exchange_api_add_aml_decision.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/lib/exchange_api_add_aml_decision.c b/src/lib/exchange_api_add_aml_decision.c new file mode 100644 index 000000000..342e1e3dc --- /dev/null +++ b/src/lib/exchange_api_add_aml_decision.c @@ -0,0 +1,246 @@ +/* + This file is part of TALER + Copyright (C) 2023 Taler Systems SA + + 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 lib/exchange_api_add_aml_decision.c + * @brief functions to add an AML decision by an AML officer + * @author Christian Grothoff + */ +#include "platform.h" +#include "taler_json_lib.h" +#include <gnunet/gnunet_curl_lib.h> +#include "taler_exchange_service.h" +#include "exchange_api_curl_defaults.h" +#include "taler_signatures.h" +#include "taler_curl_lib.h" +#include "taler_json_lib.h" + + +struct TALER_EXCHANGE_AddAmlDecision +{ + + /** + * The url for this request. + */ + char *url; + + /** + * Minor context that holds body and headers. + */ + struct TALER_CURL_PostContext post_ctx; + + /** + * Handle for the request. + */ + struct GNUNET_CURL_Job *job; + + /** + * Function to call with the result. + */ + TALER_EXCHANGE_AddAmlDecisionCallback cb; + + /** + * Closure for @a cb. + */ + void *cb_cls; + + /** + * Reference to the execution context. + */ + struct GNUNET_CURL_Context *ctx; +}; + + +/** + * Function called when we're done processing the + * HTTP POST /aml/$OFFICER_PUB/decision request. + * + * @param cls the `struct TALER_EXCHANGE_AddAmlDecision *` + * @param response_code HTTP response code, 0 on error + * @param response response body, NULL if not in JSON + */ +static void +handle_add_aml_decision_finished (void *cls, + long response_code, + const void *response) +{ + struct TALER_EXCHANGE_AddAmlDecision *wh = cls; + const json_t *json = response; + struct TALER_EXCHANGE_AddAmlDecisionResponse adr = { + .hr.http_status = (unsigned int) response_code, + .hr.reply = json + }; + + wh->job = NULL; + switch (response_code) + { + case 0: + /* no reply */ + adr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE; + adr.hr.hint = "server offline?"; + break; + case MHD_HTTP_NO_CONTENT: + break; + case MHD_HTTP_FORBIDDEN: + adr.hr.ec = TALER_JSON_get_error_code (json); + adr.hr.hint = TALER_JSON_get_error_hint (json); + break; + case MHD_HTTP_CONFLICT: + adr.hr.ec = TALER_JSON_get_error_code (json); + adr.hr.hint = TALER_JSON_get_error_hint (json); + break; + default: + /* unexpected response code */ + GNUNET_break_op (0); + adr.hr.ec = TALER_JSON_get_error_code (json); + adr.hr.hint = TALER_JSON_get_error_hint (json); + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Unexpected response code %u/%d for exchange AML decision\n", + (unsigned int) response_code, + (int) adr.hr.ec); + break; + } + if (NULL != wh->cb) + { + wh->cb (wh->cb_cls, + &adr); + wh->cb = NULL; + } + TALER_EXCHANGE_add_aml_decision_cancel (wh); +} + + +struct TALER_EXCHANGE_AddAmlDecision * +TALER_EXCHANGE_add_aml_decision ( + struct GNUNET_CURL_Context *ctx, + const char *url, + const char *justification, + struct GNUNET_TIME_Timestamp decision_time, + const struct TALER_Amount *new_threshold, + const struct TALER_PaytoHashP *h_payto, + enum TALER_AmlDecisionState new_state, + const json_t *kyc_requirements, + const struct TALER_AmlOfficerPrivateKeyP *officer_priv, + TALER_EXCHANGE_AddAmlDecisionCallback cb, + void *cb_cls) +{ + struct TALER_AmlOfficerPublicKeyP officer_pub; + struct TALER_AmlOfficerSignatureP officer_sig; + struct TALER_EXCHANGE_AddAmlDecision *wh; + CURL *eh; + json_t *body; + + GNUNET_CRYPTO_eddsa_key_get_public (&officer_priv->eddsa_priv, + &officer_pub.eddsa_pub); + TALER_officer_aml_decision_sign (justification, + decision_time, + new_threshold, + h_payto, + new_state, + kyc_requirements, + officer_priv, + &officer_sig); + wh = GNUNET_new (struct TALER_EXCHANGE_AddAmlDecision); + wh->cb = cb; + wh->cb_cls = cb_cls; + wh->ctx = ctx; + { + char *path; + char opus[sizeof (officer_pub) * 2]; + char *end; + + end = GNUNET_STRINGS_data_to_string ( + &officer_pub, + sizeof (officer_pub), + opus, + sizeof (opus)); + *end = '\0'; + GNUNET_asprintf (&path, + "aml/%s/decision", + opus); + wh->url = TALER_url_join (url, + path, + NULL); + GNUNET_free (path); + } + if (NULL == wh->url) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Could not construct request URL.\n"); + GNUNET_free (wh); + return NULL; + } + body = GNUNET_JSON_PACK ( + GNUNET_JSON_pack_string ("justification", + justification), + GNUNET_JSON_pack_data_auto ("officer_sig", + &officer_sig), + GNUNET_JSON_pack_data_auto ("h_payto", + h_payto), + GNUNET_JSON_pack_uint64 ("new_state", + (uint32_t) new_state), + GNUNET_JSON_pack_allow_null ( + GNUNET_JSON_pack_array_incref ("kyc_requirements", + (json_t *) kyc_requirements)), + TALER_JSON_pack_amount ("new_threshold", + new_threshold), + GNUNET_JSON_pack_timestamp ("decision_time", + decision_time)); + eh = TALER_EXCHANGE_curl_easy_get_ (wh->url); + if ( (NULL == eh) || + (GNUNET_OK != + TALER_curl_easy_post (&wh->post_ctx, + eh, + body)) ) + { + GNUNET_break (0); + if (NULL != eh) + curl_easy_cleanup (eh); + json_decref (body); + GNUNET_free (wh->url); + return NULL; + } + json_decref (body); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Requesting URL '%s'\n", + wh->url); + wh->job = GNUNET_CURL_job_add2 (ctx, + eh, + wh->post_ctx.headers, + &handle_add_aml_decision_finished, + wh); + if (NULL == wh->job) + { + TALER_EXCHANGE_add_aml_decision_cancel (wh); + return NULL; + } + return wh; +} + + +void +TALER_EXCHANGE_add_aml_decision_cancel ( + struct TALER_EXCHANGE_AddAmlDecision *wh) +{ + if (NULL != wh->job) + { + GNUNET_CURL_job_cancel (wh->job); + wh->job = NULL; + } + TALER_curl_easy_post_finished (&wh->post_ctx); + GNUNET_free (wh->url); + GNUNET_free (wh); +} |