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-rw-r--r--src/include/taler_exchange_service.h2
-rw-r--r--src/lib/Makefile.am1
-rw-r--r--src/lib/exchange_api_purse_delete.c239
3 files changed, 241 insertions, 1 deletions
diff --git a/src/include/taler_exchange_service.h b/src/include/taler_exchange_service.h
index 0e33f7770..938b74457 100644
--- a/src/include/taler_exchange_service.h
+++ b/src/include/taler_exchange_service.h
@@ -4983,7 +4983,7 @@ struct TALER_EXCHANGE_PurseDeleteHandle;
* @param cb_cls closure for @a cb
* @return the request handle; NULL upon error
*/
-struct TALER_EXCHANGE_PurseCreateDepositHandle *
+struct TALER_EXCHANGE_PurseDeleteHandle *
TALER_EXCHANGE_purse_delete (
struct TALER_EXCHANGE_Handle *exchange,
const struct TALER_PurseContractPrivateKeyP *purse_priv,
diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index e695cf043..b775719e6 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -52,6 +52,7 @@ libtalerexchange_la_SOURCES = \
exchange_api_melt.c \
exchange_api_purse_create_with_deposit.c \
exchange_api_purse_create_with_merge.c \
+ exchange_api_purse_delete.c \
exchange_api_purse_deposit.c \
exchange_api_purse_merge.c \
exchange_api_purses_get.c \
diff --git a/src/lib/exchange_api_purse_delete.c b/src/lib/exchange_api_purse_delete.c
new file mode 100644
index 000000000..68035b48b
--- /dev/null
+++ b/src/lib/exchange_api_purse_delete.c
@@ -0,0 +1,239 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2022 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_purse_delete.c
+ * @brief Implementation of the client to delete a purse
+ * into an account
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <jansson.h>
+#include <microhttpd.h> /* just for HTTP status codes */
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_json_lib.h>
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_json_lib.h"
+#include "taler_exchange_service.h"
+#include "exchange_api_handle.h"
+#include "exchange_api_common.h"
+#include "taler_signatures.h"
+#include "exchange_api_curl_defaults.h"
+
+
+/**
+ * @brief A purse delete with deposit handle
+ */
+struct TALER_EXCHANGE_PurseDeleteHandle
+{
+
+ /**
+ * 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 GNUNET_CURL_Job *job;
+
+ /**
+ * Function to call with the result.
+ */
+ TALER_EXCHANGE_PurseDeleteCallback cb;
+
+ /**
+ * Closure for @a cb.
+ */
+ void *cb_cls;
+
+ /**
+ * Header with the purse_sig.
+ */
+ struct curl_slist *xhdr;
+};
+
+
+/**
+ * Function called when we're done processing the
+ * HTTP DELETE /purse/$PID request.
+ *
+ * @param cls the `struct TALER_EXCHANGE_PurseDeleteHandle`
+ * @param response_code HTTP response code, 0 on error
+ * @param response parsed JSON result, NULL on error
+ */
+static void
+handle_purse_delete_finished (void *cls,
+ long response_code,
+ const void *response)
+{
+ struct TALER_EXCHANGE_PurseDeleteHandle *pdh = cls;
+ const json_t *j = response;
+ struct TALER_EXCHANGE_PurseDeleteResponse dr = {
+ .hr.reply = j,
+ .hr.http_status = (unsigned int) response_code
+ };
+
+ pdh->job = NULL;
+ switch (response_code)
+ {
+ case 0:
+ dr.hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
+ break;
+ case MHD_HTTP_NO_CONTENT:
+ 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 */
+ dr.hr.ec = TALER_JSON_get_error_code (j);
+ dr.hr.hint = TALER_JSON_get_error_hint (j);
+ break;
+ case MHD_HTTP_FORBIDDEN:
+ dr.hr.ec = TALER_JSON_get_error_code (j);
+ dr.hr.hint = TALER_JSON_get_error_hint (j);
+ /* 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:
+ dr.hr.ec = TALER_JSON_get_error_code (j);
+ dr.hr.hint = TALER_JSON_get_error_hint (j);
+ /* Nothing really to verify, this should never
+ happen, we should pass the JSON reply to the application */
+ break;
+ case MHD_HTTP_CONFLICT:
+ dr.hr.ec = TALER_JSON_get_error_code (j);
+ dr.hr.hint = TALER_JSON_get_error_hint (j);
+ break;
+ case MHD_HTTP_INTERNAL_SERVER_ERROR:
+ dr.hr.ec = TALER_JSON_get_error_code (j);
+ dr.hr.hint = TALER_JSON_get_error_hint (j);
+ /* Server had an internal issue; we should retry, but this API
+ leaves this to the application */
+ break;
+ default:
+ /* unexpected response code */
+ dr.hr.ec = TALER_JSON_get_error_code (j);
+ dr.hr.hint = TALER_JSON_get_error_hint (j);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unexpected response code %u/%d for exchange deposit\n",
+ (unsigned int) response_code,
+ dr.hr.ec);
+ GNUNET_break_op (0);
+ break;
+ }
+ pdh->cb (pdh->cb_cls,
+ &dr);
+ TALER_EXCHANGE_purse_delete_cancel (pdh);
+}
+
+
+struct TALER_EXCHANGE_PurseDeleteHandle *
+TALER_EXCHANGE_purse_delete (
+ struct TALER_EXCHANGE_Handle *exchange,
+ const struct TALER_PurseContractPrivateKeyP *purse_priv,
+ TALER_EXCHANGE_PurseDeleteCallback cb,
+ void *cb_cls)
+{
+ struct TALER_EXCHANGE_PurseDeleteHandle *pdh;
+ struct GNUNET_CURL_Context *ctx;
+ CURL *eh;
+ struct TALER_PurseContractPublicKeyP purse_pub;
+ struct TALER_PurseContractSignatureP purse_sig;
+ char arg_str[sizeof (purse_pub) * 2 + 32];
+
+ pdh = GNUNET_new (struct TALER_EXCHANGE_PurseDeleteHandle);
+ pdh->exchange = exchange;
+ pdh->cb = cb;
+ pdh->cb_cls = cb_cls;
+ GNUNET_CRYPTO_eddsa_key_get_public (&purse_priv->eddsa_priv,
+ &purse_pub.eddsa_pub);
+ GNUNET_assert (GNUNET_YES ==
+ TEAH_handle_is_ready (exchange));
+ {
+ char pub_str[sizeof (purse_pub) * 2];
+ char *end;
+
+ end = GNUNET_STRINGS_data_to_string (&purse_pub,
+ sizeof (purse_pub),
+ pub_str,
+ sizeof (pub_str));
+ *end = '\0';
+ GNUNET_snprintf (arg_str,
+ sizeof (arg_str),
+ "/purses/%s",
+ pub_str);
+ }
+ pdh->url = TEAH_path_to_url (exchange,
+ arg_str);
+ if (NULL == pdh->url)
+ {
+ GNUNET_break (0);
+ GNUNET_free (pdh);
+ return NULL;
+ }
+ TALER_wallet_purse_delete_sign (purse_priv,
+ &purse_sig);
+ {
+ char *delete_str;
+ char *xhdr;
+
+ delete_str =
+ GNUNET_STRINGS_data_to_string_alloc (&purse_sig,
+ sizeof (purse_sig));
+ GNUNET_asprintf (&xhdr,
+ "Taler-Purse-Signature: %s",
+ delete_str);
+ GNUNET_free (delete_str);
+ pdh->xhdr = curl_slist_append (NULL,
+ xhdr);
+ GNUNET_free (xhdr);
+ }
+ eh = TALER_EXCHANGE_curl_easy_get_ (pdh->url);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "URL for purse delete: `%s'\n",
+ pdh->url);
+ ctx = TEAH_handle_to_context (exchange);
+ pdh->job = GNUNET_CURL_job_add2 (ctx,
+ eh,
+ pdh->xhdr,
+ &handle_purse_delete_finished,
+ pdh);
+ return pdh;
+}
+
+
+void
+TALER_EXCHANGE_purse_delete_cancel (
+ struct TALER_EXCHANGE_PurseDeleteHandle *pdh)
+{
+ if (NULL != pdh->job)
+ {
+ GNUNET_CURL_job_cancel (pdh->job);
+ pdh->job = NULL;
+ }
+ curl_slist_free_all (pdh->xhdr);
+ GNUNET_free (pdh->url);
+ GNUNET_free (pdh);
+}
+
+
+/* end of exchange_api_purse_delete.c */