templates

4 files changed, 365 insertions, 3 deletions

diff --git a/src/backend/taler-merchant-httpd_private-delete-templates-ID.c b/src/backend/taler-merchant-httpd_private-delete-templates-ID.c
new file mode 100644
index 00000000..d7b086e2
--- /dev/null
+++ b/src/backend/taler-merchant-httpd_private-delete-templates-ID.c
@@ -0,0 +1,74 @@
+/*
+  This file is part of TALER
+  (C) 2020 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU Affero 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 taler-merchant-httpd_private-delete-templates-ID.c
+ * @brief implement DELETE /templates/$ID
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler-merchant-httpd_private-delete-templates-ID.h"
+#include <taler/taler_json_lib.h>
+
+
+/**
+ * Handle a DELETE "/templates/$ID" request.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] hc context with further information about the request
+ * @return MHD result code
+ */
+MHD_RESULT
+TMH_private_delete_templates_ID (const struct TMH_RequestHandler *rh,
+                                struct MHD_Connection *connection,
+                                struct TMH_HandlerContext *hc)
+{
+  struct TMH_MerchantInstance *mi = hc->instance;
+  enum GNUNET_DB_QueryStatus qs;
+
+  (void) rh;
+  GNUNET_assert (NULL != mi);
+  GNUNET_assert (NULL != hc->infix);
+  qs = TMH_db->delete_template (TMH_db->cls,
+                               mi->settings.id,
+                               hc->infix);
+  switch (qs)
+  {
+  case GNUNET_DB_STATUS_HARD_ERROR:
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_GENERIC_DB_STORE_FAILED,
+                                       "delete_template");
+  case GNUNET_DB_STATUS_SOFT_ERROR:
+    GNUNET_break (0);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE,
+                                       "delete_template (soft)");
+
+  case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
+    return TALER_MHD_reply_static (connection,
+                                   MHD_HTTP_NO_CONTENT,
+                                   NULL,
+                                   NULL,
+                                   0);
+  }
+  GNUNET_assert (0);
+  return MHD_NO;
+}
+
+
+/* end of taler-merchant-httpd_private-delete-templates-ID.c */
diff --git a/src/backend/taler-merchant-httpd_private-get-templates-ID.c b/src/backend/taler-merchant-httpd_private-get-templates-ID.c
new file mode 100644
index 00000000..80fccd40
--- /dev/null
+++ b/src/backend/taler-merchant-httpd_private-get-templates-ID.c
@@ -0,0 +1,82 @@
+/*
+  This file is part of TALER
+  (C) 2019, 2020, 2021 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU Affero 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 taler-merchant-httpd_private-get-templates-ID.c
+ * @brief implement GET /templates/$ID
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler-merchant-httpd_private-get-templates-ID.h"
+#include <taler/taler_json_lib.h>
+
+
+/**
+ * Handle a GET "/templates/$ID" request.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] hc context with further information about the request
+ * @return MHD result code
+ */
+MHD_RESULT
+TMH_private_get_templates_ID (const struct TMH_RequestHandler *rh,
+                             struct MHD_Connection *connection,
+                             struct TMH_HandlerContext *hc)
+{
+  struct TMH_MerchantInstance *mi = hc->instance;
+  struct TALER_MERCHANTDB_TemplateDetails tp = { 0 };
+  enum GNUNET_DB_QueryStatus qs;
+
+  GNUNET_assert (NULL != mi);
+  qs = TMH_db->lookup_template (TMH_db->cls,
+                               mi->settings.id,
+                               hc->infix,
+                               &tp);
+  if (0 > qs)
+  {
+    GNUNET_break (0);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_GENERIC_DB_FETCH_FAILED,
+                                       "lookup_template");
+  }
+  if (0 == qs)
+  {
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_NOT_FOUND,
+                                       TALER_EC_MERCHANT_GENERIC_TEMPLATE_UNKNOWN,
+                                       hc->infix);
+  }
+  {
+    MHD_RESULT ret;
+
+    ret = TALER_MHD_REPLY_JSON_PACK (
+      connection,
+      MHD_HTTP_OK,
+      GNUNET_JSON_pack_string ("template_description",
+                               tp.template_description),
+      GNUNET_JSON_pack_string ("image",
+                               tp.image),
+      GNUNET_JSON_pack_object_steal ("template_contract",
+                                     tp.template_contract),
+    GNUNET_free (tp.template_description);
+    GNUNET_free (tp.image);
+    return ret;
+  }
+}
+
+
+/* end of taler-merchant-httpd_private-get-templates-ID.c */
diff --git a/src/backend/taler-merchant-httpd_private-patch-templates-ID.c b/src/backend/taler-merchant-httpd_private-patch-templates-ID.c
new file mode 100644
index 00000000..cbba71f2
--- /dev/null
+++ b/src/backend/taler-merchant-httpd_private-patch-templates-ID.c
@@ -0,0 +1,206 @@
+/*
+  This file is part of TALER
+  (C) 2020 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Affero 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 taler-merchant-httpd_private-patch-templates-ID.c
+ * @brief implementing PATCH /templates/$ID request handling
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler-merchant-httpd_private-patch-templates-ID.h"
+#include "taler-merchant-httpd_helper.h"
+#include <taler/taler_json_lib.h>
+
+
+/**
+ * How often do we retry the simple INSERT database transaction?
+ */
+#define MAX_RETRIES 3
+
+
+/**
+ * Determine the cause of the PATCH failure in more detail and report.
+ *
+ * @param connection connection to report on
+ * @param instance_id instance we are processing
+ * @param template_id ID of the product to patch
+ * @param tp template details we failed to set
+ */
+static MHD_RESULT
+determine_cause (struct MHD_Connection *connection,
+                 const char *instance_id,
+                 const char *template_id,
+                 const struct TALER_MERCHANTDB_TemplateDetails *tp)
+{
+  struct TALER_MERCHANTDB_TemplateDetails tpx;
+  enum GNUNET_DB_QueryStatus qs;
+
+  qs = TMH_db->lookup_template (TMH_db->cls,
+                               instance_id,
+                               template_id,
+                               &tpx);
+  switch (qs)
+  {
+  case GNUNET_DB_STATUS_HARD_ERROR:
+    GNUNET_break (0);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_GENERIC_DB_FETCH_FAILED,
+                                       NULL);
+  case GNUNET_DB_STATUS_SOFT_ERROR:
+    GNUNET_break (0);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                       TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE,
+                                       "unexpected serialization problem");
+  case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_NOT_FOUND,
+                                       TALER_EC_MERCHANT_GENERIC_TEMPLATE_UNKNOWN,
+                                       template_id);
+  case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
+    break; /* do below */
+  }
+
+  {
+    enum TALER_ErrorCode ec;
+
+    ec = TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE;
+    TALER_MERCHANTDB_template_details_free (&tpx);
+    GNUNET_break (TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE != ec);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_CONFLICT,
+                                       ec,
+                                       NULL);
+  }
+}
+
+
+/**
+ * PATCH configuration of an existing instance, given its configuration.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] hc context with further information about the request
+ * @return MHD result code
+ */
+MHD_RESULT
+TMH_private_patch_templates_ID (const struct TMH_RequestHandler *rh,
+                               struct MHD_Connection *connection,
+                               struct TMH_HandlerContext *hc)
+{
+  struct TMH_MerchantInstance *mi = hc->instance;
+  const char *template_id = hc->infix;
+  struct TALER_MERCHANTDB_TemplateDetails tp = {0};
+  enum GNUNET_DB_QueryStatus qs;
+  struct GNUNET_JSON_Specification spec[] = {
+    GNUNET_JSON_spec_string ("template_description",
+                             (const char **) &tp.template_description),
+    GNUNET_JSON_spec_mark_optional (
+      GNUNET_JSON_spec_string ("image",
+                               (const char **) &tp.image),
+      NULL),
+    GNUNET_JSON_spec_mark_optional (
+      GNUNET_JSON_spec_json ("template_contract",
+                             &tp.template_contract),
+      NULL),
+    GNUNET_JSON_spec_end ()
+  };
+
+  GNUNET_assert (NULL != mi);
+  GNUNET_assert (NULL != template_id);
+  {
+    enum GNUNET_GenericReturnValue res;
+
+    res = TALER_MHD_parse_json_data (connection,
+                                     hc->request_body,
+                                     spec);
+    if (GNUNET_OK != res)
+      return (GNUNET_NO == res)
+             ? MHD_YES
+             : MHD_NO;
+  }
+
+    if (! TMH_template_contract_valid (tp.template_contract))
+  {
+    GNUNET_break_op (0);
+    GNUNET_JSON_parse_free (spec);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_BAD_REQUEST,
+                                       TALER_EC_GENERIC_PARAMETER_MALFORMED,
+                                       "template_contract");
+  }
+
+
+  if (NULL == tp.image)
+    tp.image = "";
+  if (! TMH_image_data_url_valid (tp.image))
+  {
+    GNUNET_break_op (0);
+    GNUNET_JSON_parse_free (spec);
+    return TALER_MHD_reply_with_error (connection,
+                                       MHD_HTTP_BAD_REQUEST,
+                                       TALER_EC_GENERIC_PARAMETER_MALFORMED,
+                                       "image");
+  }
+
+  qs = TMH_db->update_template (TMH_db->cls,
+                               mi->settings.id,
+                               template_id,
+                               &tp);
+  {
+    MHD_RESULT ret = MHD_NO;
+
+    switch (qs)
+    {
+    case GNUNET_DB_STATUS_HARD_ERROR:
+      GNUNET_break (0);
+      ret = TALER_MHD_reply_with_error (connection,
+                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                        TALER_EC_GENERIC_DB_STORE_FAILED,
+                                        NULL);
+      break;
+    case GNUNET_DB_STATUS_SOFT_ERROR:
+      GNUNET_break (0);
+      ret = TALER_MHD_reply_with_error (connection,
+                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
+                                        TALER_EC_GENERIC_INTERNAL_INVARIANT_FAILURE,
+                                        "unexpected serialization problem");
+      break;
+    case GNUNET_DB_STATUS_SUCCESS_NO_RESULTS:
+      ret = determine_cause (connection,
+                             mi->settings.id,
+                             template_id,
+                             &tp);
+      break;
+    case GNUNET_DB_STATUS_SUCCESS_ONE_RESULT:
+      ret = TALER_MHD_reply_static (connection,
+                                    MHD_HTTP_NO_CONTENT,
+                                    NULL,
+                                    NULL,
+                                    0);
+      break;
+    }
+    GNUNET_JSON_parse_free (spec);
+    return ret;
+  }
+}
+
+
+/* end of taler-merchant-httpd_private-patch-templates-ID.c */
diff --git a/src/backend/taler-merchant-httpd_private-post-templates.c b/src/backend/taler-merchant-httpd_private-post-templates.c
index 5122e2e2..1e6206bb 100644
--- a/src/backend/taler-merchant-httpd_private-post-templates.c
+++ b/src/backend/taler-merchant-httpd_private-post-templates.c
@@ -166,9 +166,9 @@ TMH_private_post_templates (const struct TMH_RequestHandler *rh,
       {
         bool eq;
 
-        eq = products_equal (&tp,
+        eq = templates_equal (&tp,
                              &etp);
-        TALER_MERCHANTDB_product_details_free (&etp);
+        TALER_MERCHANTDB_template_details_free (&etp);
         TMH_db->rollback (TMH_db->cls);
         GNUNET_JSON_parse_free (spec);
         return eq
@@ -179,7 +179,7 @@ TMH_private_post_templates (const struct TMH_RequestHandler *rh,
                                     0)
           : TALER_MHD_reply_with_error (connection,
                                         MHD_HTTP_CONFLICT,
-                                        TALER_EC_MERCHANT_PRIVATE_POST_PRODUCTS_CONFLICT_PRODUCT_EXISTS,
+                                        TALER_EC_MERCHANT_PRIVATE_POST_TEMPLATES_CONFLICT_TEMPLATE_EXISTS,
                                         template_id);
       }
     } /* end switch (qs) */