api template

4 files changed, 647 insertions, 0 deletions

diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index dec8712f..93870ece 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -21,6 +21,7 @@ libtalermerchant_la_SOURCES = \
   merchant_api_delete_product.c \
   merchant_api_delete_reserve.c \
   merchant_api_delete_transfer.c \
+  merchant_api_delete_template.c \
   merchant_api_get_config.c \
   merchant_api_get_instance.c \
   merchant_api_get_instances.c \
@@ -32,12 +33,15 @@ libtalermerchant_la_SOURCES = \
   merchant_api_get_reserves.c \
   merchant_api_get_tips.c \
   merchant_api_get_transfers.c \
+  merchant_api_get_template.c \
+  merchant_api_get_templates.c \
   merchant_api_lock_product.c \
   merchant_api_merchant_get_order.c \
   merchant_api_merchant_get_tip.c \
   merchant_api_patch_instance.c \
   merchant_api_patch_order_forget.c \
   merchant_api_patch_product.c \
+  merchant_api_patch_template.c \
   merchant_api_post_instance_auth.c \
   merchant_api_post_instances.c \
   merchant_api_post_orders.c \
@@ -49,6 +53,7 @@ libtalermerchant_la_SOURCES = \
   merchant_api_post_products.c \
   merchant_api_post_reserves.c \
   merchant_api_post_transfers.c \
+  merchant_api_post_templates.c \
   merchant_api_tip_authorize.c \
   merchant_api_tip_pickup.c \
   merchant_api_tip_pickup2.c \
diff --git a/src/lib/merchant_api_delete_template.c b/src/lib/merchant_api_delete_template.c
new file mode 100644
index 00000000..e044c07f
--- /dev/null
+++ b/src/lib/merchant_api_delete_template.c
@@ -0,0 +1,184 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014-2018, 2020 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 merchant_api_delete_template.c
+ * @brief Implementation of the DELETE /template/$ID request of the merchant's HTTP API
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <curl/curl.h>
+#include <jansson.h>
+#include <microhttpd.h> /* just for HTTP status codes */
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_merchant_service.h"
+#include "merchant_api_curl_defaults.h"
+#include <taler/taler_json_lib.h>
+#include <taler/taler_signatures.h>
+
+
+/**
+ * Handle for a DELETE /template/$ID operation.
+ */
+struct TALER_MERCHANT_TemplateDeleteHandle
+{
+  /**
+   * The url for this request.
+   */
+  char *url;
+
+  /**
+   * Handle for the request.
+   */
+  struct GNUNET_CURL_Job *job;
+
+  /**
+   * Function to call with the result.
+   */
+  TALER_MERCHANT_TemplateDeleteCallback 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 GET /template/$ID request.
+ *
+ * @param cls the `struct TALER_MERCHANT_TemplateDeleteHandle`
+ * @param response_code HTTP response code, 0 on error
+ * @param response response body, NULL if not in JSON
+ */
+static void
+handle_delete_template_finished (void *cls,
+                                long response_code,
+                                const void *response)
+{
+  struct TALER_MERCHANT_TemplateDeleteHandle *tdh = cls;
+  const json_t *json = response;
+  struct TALER_MERCHANT_HttpResponse hr = {
+    .http_status = (unsigned int) response_code,
+    .reply = json
+  };
+
+  tdh->job = NULL;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Got /template/$ID response with status code %u\n",
+              (unsigned int) response_code);
+  switch (response_code)
+  {
+  case MHD_HTTP_NO_CONTENT:
+    break;
+  case MHD_HTTP_UNAUTHORIZED:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    /* Nothing really to verify, merchant says we need to authenticate. */
+    break;
+  case MHD_HTTP_NOT_FOUND:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    break;
+  case MHD_HTTP_CONFLICT:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    break;
+  default:
+    /* unexpected response code */
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                (int) hr.ec);
+    break;
+  }
+  tdh->cb (tdh->cb_cls,
+           &hr);
+  TALER_MERCHANT_template_delete_cancel (tdh);
+}
+
+
+struct TALER_MERCHANT_TemplateDeleteHandle *
+TALER_MERCHANT_template_delete (
+  struct GNUNET_CURL_Context *ctx,
+  const char *backend_url,
+  const char *template_id,
+  TALER_MERCHANT_TemplateDeleteCallback cb,
+  void *cb_cls)
+{
+  struct TALER_MERCHANT_TemplateDeleteHandle *tdh;
+
+  tdh = GNUNET_new (struct TALER_MERCHANT_TemplateDeleteHandle);
+  tdh->ctx = ctx;
+  tdh->cb = cb;
+  tdh->cb_cls = cb_cls;
+  {
+    char *path;
+
+    GNUNET_asprintf (&path,
+                     "private/template/%s",
+                     template_id);
+    tdh->url = TALER_url_join (backend_url,
+                               path,
+                               NULL);
+    GNUNET_free (path);
+  }
+  if (NULL == tdh->url)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Could not construct request URL.\n");
+    GNUNET_free (tdh);
+    return NULL;
+  }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Requesting URL '%s'\n",
+              tdh->url);
+  {
+    CURL *eh;
+
+    eh = TALER_MERCHANT_curl_easy_get_ (tdh->url);
+    GNUNET_assert (CURLE_OK ==
+                   curl_easy_setopt (eh,
+                                     CURLOPT_CUSTOMREQUEST,
+                                     MHD_HTTP_METHOD_DELETE));
+    tdh->job = GNUNET_CURL_job_add (ctx,
+                                    eh,
+                                    &handle_delete_template_finished,
+                                    tdh);
+  }
+  return tdh;
+}
+
+
+void
+TALER_MERCHANT_template_delete_cancel (
+  struct TALER_MERCHANT_TemplateDeleteHandle *tdh)
+{
+  if (NULL != tdh->job)
+    GNUNET_CURL_job_cancel (tdh->job);
+  GNUNET_free (tdh->url);
+  GNUNET_free (tdh);
+}
diff --git a/src/lib/merchant_api_get_template.c b/src/lib/merchant_api_get_template.c
new file mode 100644
index 00000000..01e4a91e
--- /dev/null
+++ b/src/lib/merchant_api_get_template.c
@@ -0,0 +1,211 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014-2018, 2020 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 merchant_api_get_template.c
+ * @brief Implementation of the GET /template/$ID request of the merchant's HTTP API
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <curl/curl.h>
+#include <jansson.h>
+#include <microhttpd.h> /* just for HTTP status codes */
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_merchant_service.h"
+#include "merchant_api_curl_defaults.h"
+#include <taler/taler_json_lib.h>
+#include <taler/taler_signatures.h>
+
+
+/**
+ * Handle for a GET /template/$ID operation.
+ */
+struct TALER_MERCHANT_TemplateGetHandle
+{
+  /**
+   * The url for this request.
+   */
+  char *url;
+
+  /**
+   * Handle for the request.
+   */
+  struct GNUNET_CURL_Job *job;
+
+  /**
+   * Function to call with the result.
+   */
+  TALER_MERCHANT_TemplateGetCallback 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 GET /template/$ID request.
+ *
+ * @param cls the `struct TALER_MERCHANT_TemplateGetHandle`
+ * @param response_code HTTP response code, 0 on error
+ * @param response response body, NULL if not in JSON
+ */
+static void
+handle_get_template_finished (void *cls,
+                             long response_code,
+                             const void *response)
+{
+  struct TALER_MERCHANT_TemplateGetHandle *tgh = cls;
+  const json_t *json = response;
+  struct TALER_MERCHANT_HttpResponse hr = {
+    .http_status = (unsigned int) response_code,
+    .reply = json
+  };
+
+  tgh->job = NULL;
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Got /template/$ID response with status code %u\n",
+              (unsigned int) response_code);
+  switch (response_code)
+  {
+  case MHD_HTTP_OK:
+    {
+      const char *template_description;
+      const char *image;
+      json_t *template_contract;
+      bool rst_ok = true;
+      struct GNUNET_JSON_Specification spec[] = {
+        GNUNET_JSON_spec_string ("template_description",
+                                 &template_description),
+        GNUNET_JSON_spec_string ("image",
+                                 &image),
+        GNUNET_JSON_spec_json ("template_contract",
+                               &template_contract),
+        GNUNET_JSON_spec_end ()
+      };
+
+
+      if ( (rst_ok) &&
+           (GNUNET_OK ==
+            GNUNET_JSON_parse (json,
+                               spec,
+                               NULL, NULL)) )
+      {
+        tgh->cb (tgh->cb_cls,
+                 &hr,
+                 template_description,
+                 image,
+                 template_contract);
+        GNUNET_JSON_parse_free (spec);
+        TALER_MERCHANT_template_get_cancel (tgh);
+        return;
+      }
+      hr.http_status = 0;
+      hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
+      GNUNET_JSON_parse_free (spec);
+      break;
+    }
+  case MHD_HTTP_UNAUTHORIZED:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    /* Nothing really to verify, merchant says we need to authenticate. */
+    break;
+  case MHD_HTTP_NOT_FOUND:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    break;
+  default:
+    /* unexpected response code */
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                (int) hr.ec);
+    break;
+  }
+  tgh->cb (tgh->cb_cls,
+           &hr,
+           NULL,
+           NULL,
+           NULL);
+  TALER_MERCHANT_template_get_cancel (tgh);
+}
+
+
+struct TALER_MERCHANT_TemplateGetHandle *
+TALER_MERCHANT_template_get (
+  struct GNUNET_CURL_Context *ctx,
+  const char *backend_url,
+  const char *template_id,
+  TALER_MERCHANT_TemplateGetCallback cb,
+  void *cb_cls)
+{
+  struct TALER_MERCHANT_TemplateGetHandle *tgh;
+  CURL *eh;
+
+  tgh = GNUNET_new (struct TALER_MERCHANT_TemplateGetHandle);
+  tgh->ctx = ctx;
+  tgh->cb = cb;
+  tgh->cb_cls = cb_cls;
+  {
+    char *path;
+
+    GNUNET_asprintf (&path,
+                     "private/template/%s",
+                     template_id);
+    tgh->url = TALER_url_join (backend_url,
+                               path,
+                               NULL);
+    GNUNET_free (path);
+  }
+  if (NULL == tgh->url)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Could not construct request URL.\n");
+    GNUNET_free (tgh);
+    return NULL;
+  }
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Requesting URL '%s'\n",
+              tgh->url);
+  eh = TALER_MERCHANT_curl_easy_get_ (tgh->url);
+  tgh->job = GNUNET_CURL_job_add (ctx,
+                                  eh,
+                                  &handle_get_template_finished,
+                                  tgh);
+  return tgh;
+}
+
+
+void
+TALER_MERCHANT_template_get_cancel (
+  struct TALER_MERCHANT_TemplateGetHandle *tgh)
+{
+  if (NULL != tgh->job)
+    GNUNET_CURL_job_cancel (tgh->job);
+  GNUNET_free (tgh->url);
+  GNUNET_free (tgh);
+}
diff --git a/src/lib/merchant_api_patch_template.c b/src/lib/merchant_api_patch_template.c
new file mode 100644
index 00000000..ba66a94f
--- /dev/null
+++ b/src/lib/merchant_api_patch_template.c
@@ -0,0 +1,247 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2020, 2021 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 merchant_api_patch_template.c
+ * @brief Implementation of the PATCH /template/$ID request
+ *        of the merchant's HTTP API
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <curl/curl.h>
+#include <jansson.h>
+#include <microhttpd.h> /* just for HTTP status codes */
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_merchant_service.h"
+#include "merchant_api_curl_defaults.h"
+#include <taler/taler_json_lib.h>
+#include <taler/taler_curl_lib.h>
+
+
+/**
+ * Handle for a PATCH /template/$ID operation.
+ */
+struct TALER_MERCHANT_TemplatePatchHandle
+{
+
+  /**
+   * The url for this request.
+   */
+  char *url;
+
+  /**
+   * Handle for the request.
+   */
+  struct GNUNET_CURL_Job *job;
+
+  /**
+   * Function to call with the result.
+   */
+  TALER_MERCHANT_TemplatePatchCallback cb;
+
+  /**
+   * Closure for @a cb.
+   */
+  void *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;
+
+};
+
+
+/**
+ * Function called when we're done processing the
+ * HTTP PATCH /template/$ID request.
+ *
+ * @param cls the `struct TALER_MERCHANT_TemplatePatchHandle`
+ * @param response_code HTTP response code, 0 on error
+ * @param response response body, NULL if not in JSON
+ */
+static void
+handle_patch_template_finished (void *cls,
+                               long response_code,
+                               const void *response)
+{
+  struct TALER_MERCHANT_TemplatePatchHandle *tph = cls;
+  const json_t *json = response;
+  struct TALER_MERCHANT_HttpResponse hr = {
+    .http_status = (unsigned int) response_code,
+    .reply = json
+  };
+
+  tph->job = NULL;
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "PATCH /template/$ID completed with response code %u\n",
+              (unsigned int) response_code);
+  switch (response_code)
+  {
+  case 0:
+    hr.ec = TALER_EC_GENERIC_INVALID_RESPONSE;
+    break;
+  case MHD_HTTP_NO_CONTENT:
+    break;
+  case MHD_HTTP_BAD_REQUEST:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    GNUNET_break_op (0);
+    /* This should never happen, either us
+     * or the merchant is buggy (or API version conflict);
+     * just pass JSON reply to the application */
+    break;
+  case MHD_HTTP_UNAUTHORIZED:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    /* Nothing really to verify, merchant says we need to authenticate. */
+    break;
+  case MHD_HTTP_FORBIDDEN:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    /* Nothing really to verify, merchant says we tried to abort the payment
+     * after it was successful. We should pass the JSON reply to the
+     * application */
+    break;
+  case MHD_HTTP_NOT_FOUND:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    break;
+  case MHD_HTTP_CONFLICT:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    break;
+  case MHD_HTTP_INTERNAL_SERVER_ERROR:
+    hr.ec = TALER_JSON_get_error_code (json);
+    hr.hint = TALER_JSON_get_error_hint (json);
+    /* Server had an internal issue; we should retry,
+       but this API leaves this to the application */
+    break;
+  default:
+    TALER_MERCHANT_parse_error_details_ (json,
+                                         response_code,
+                                         &hr);
+    /* unexpected response code */
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Unexpected response code %u/%d\n",
+                (unsigned int) response_code,
+                (int) hr.ec);
+    GNUNET_break_op (0);
+    break;
+  }
+  tph->cb (tph->cb_cls,
+           &hr);
+  TALER_MERCHANT_template_patch_cancel (tph);
+}
+
+
+struct TALER_MERCHANT_TemplatePatchHandle *
+TALER_MERCHANT_template_patch (
+  struct GNUNET_CURL_Context *ctx,
+  const char *backend_url,
+  const char *template_id,
+  const char *template_description,
+  const char *image,
+  const json_t *template_contract,
+  TALER_MERCHANT_TemplatePatchCallback cb,
+  void *cb_cls)
+{
+  struct TALER_MERCHANT_TemplatePatchHandle *tph;
+  json_t *req_obj;
+
+  req_obj = GNUNET_JSON_PACK (
+    GNUNET_JSON_pack_string ("template_description",
+                             template_description),
+    GNUNET_JSON_pack_string ("image",
+                             image),
+    GNUNET_JSON_pack_object_incref ("template_contract",
+                                    (json_t *) template_contract));
+  tph = GNUNET_new (struct TALER_MERCHANT_TemplatePatchHandle);
+  tph->ctx = ctx;
+  tph->cb = cb;
+  tph->cb_cls = cb_cls;
+  {
+    char *path;
+
+    GNUNET_asprintf (&path,
+                     "private/template/%s",
+                     template_id);
+    tph->url = TALER_url_join (backend_url,
+                               path,
+                               NULL);
+    GNUNET_free (path);
+  }
+  if (NULL == tph->url)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Could not construct request URL.\n");
+    json_decref (req_obj);
+    GNUNET_free (tph);
+    return NULL;
+  }
+  {
+    CURL *eh;
+
+    eh = TALER_MERCHANT_curl_easy_get_ (tph->url);
+    if (GNUNET_OK !=
+        TALER_curl_easy_post (&tph->post_ctx,
+                              eh,
+                              req_obj))
+    {
+      GNUNET_break (0);
+      curl_easy_cleanup (eh);
+      json_decref (req_obj);
+      GNUNET_free (tph);
+      return NULL;
+    }
+    json_decref (req_obj);
+    GNUNET_assert (CURLE_OK ==
+                   curl_easy_setopt (eh,
+                                     CURLOPT_CUSTOMREQUEST,
+                                     MHD_HTTP_METHOD_PATCH));
+    tph->job = GNUNET_CURL_job_add2 (ctx,
+                                     eh,
+                                     tph->post_ctx.headers,
+                                     &handle_patch_template_finished,
+                                     tph);
+  }
+  return tph;
+}
+
+
+void
+TALER_MERCHANT_template_patch_cancel (
+  struct TALER_MERCHANT_TemplatePatchHandle *tph)
+{
+  if (NULL != tph->job)
+  {
+    GNUNET_CURL_job_cancel (tph->job);
+    tph->job = NULL;
+  }
+  TALER_curl_easy_post_finished (&tph->post_ctx);
+  GNUNET_free (tph->url);
+  GNUNET_free (tph);
+}
+
+
+/* end of merchant_api_patch_template.c */