[taler-exchange] branch master updated: enable auditor enable client logic

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grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new 5750a2c7 enable auditor enable client logic
5750a2c7 is described below

commit 5750a2c767fc2ea38b3da6fa595c89463abb5e16
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Wed Nov 25 21:33:14 2020 +0100

    enable auditor enable client logic
---
 src/lib/Makefile.am                              |   1 +
 src/lib/exchange_api_management_auditor_enable.c | 142 ++++++++++++++++++++---
 2 files changed, 127 insertions(+), 16 deletions(-)

diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index bf0ef6f4..d2fd161f 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -28,6 +28,7 @@ libtalerexchange_la_SOURCES = \
   exchange_api_deposits_get.c \
   exchange_api_link.c \
   exchange_api_management_auditor_disable.c \
+  exchange_api_management_auditor_enable.c \
   exchange_api_management_revoke_signing_key.c \
   exchange_api_melt.c \
   exchange_api_recoup.c \
diff --git a/src/lib/exchange_api_management_auditor_enable.c 
b/src/lib/exchange_api_management_auditor_enable.c
index 98eea9a8..dedc9e43 100644
--- a/src/lib/exchange_api_management_auditor_enable.c
+++ b/src/lib/exchange_api_management_auditor_enable.c
@@ -24,6 +24,8 @@
 #include <gnunet/gnunet_curl_lib.h>
 #include "taler_exchange_service.h"
 #include "taler_signatures.h"
+#include "taler_curl_lib.h"
+#include "taler_json_lib.h"
 
 
 /**
@@ -37,6 +39,11 @@ struct TALER_EXCHANGE_ManagementAuditorEnableHandle
    */
   char *url;
 
+  /**
+   * Minor context that holds body and headers.
+   */
+  struct TALER_CURL_PostContext post_ctx;
+
   /**
    * Handle for the request.
    */
@@ -60,18 +67,59 @@ struct TALER_EXCHANGE_ManagementAuditorEnableHandle
 
 
 /**
- * Inform the exchange that an auditor should be enable or enabled.
+ * Function called when we're done processing the
+ * HTTP POST /management/auditors request.
  *
- * @param ctx the context
- * @param url HTTP base URL for the exchange
- * @param auditor_pub the public signing key of the auditor
- * @param auditor_url base URL of the auditor
- * @param validity_start when was this decided?
- * @param master_sig signature affirming the auditor addition
- * @param cb function to call with the exchange's result
- * @param cb_cls closure for @a cb
- * @return the request handle; NULL upon error
+ * @param cls the `struct TALER_EXCHANGE_ManagementAuditorEnableHandle *`
+ * @param response_code HTTP response code, 0 on error
+ * @param response response body, NULL if not in JSON
  */
+static void
+handle_auditor_enable_finished (void *cls,
+                                long response_code,
+                                const void *response)
+{
+  struct TALER_EXCHANGE_ManagementAuditorEnableHandle *ah = cls;
+  const json_t *json = response;
+  struct TALER_EXCHANGE_HttpResponse hr = {
+    .http_status = (unsigned int) response_code,
+    .reply = json
+  };
+
+  ah->job = NULL;
+  switch (response_code)
+  {
+  case MHD_HTTP_NO_CONTENT:
+    break;
+  case MHD_HTTP_FORBIDDEN:
+    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 */
+    GNUNET_break_op (0);
+    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;
+  }
+  if (NULL != ah->cb)
+  {
+    ah->cb (ah->cb_cls,
+            &hr);
+    ah->cb = NULL;
+  }
+  TALER_EXCHANGE_management_enable_auditor_cancel (ah);
+}
+
+
 struct TALER_EXCHANGE_ManagementAuditorEnableHandle *
 TALER_EXCHANGE_management_enable_auditor (
   struct GNUNET_CURL_Context *ctx,
@@ -81,14 +129,75 @@ TALER_EXCHANGE_management_enable_auditor (
   struct GNUNET_TIME_Absolute validity_start,
   const struct TALER_MasterSignatureP *master_sig,
   TALER_EXCHANGE_ManagementAuditorEnableCallback cb,
-  void *cb_cls);
+  void *cb_cls)
+{
+  struct TALER_EXCHANGE_ManagementAuditorEnableHandle *ah;
+  CURL *eh;
+  json_t *body;
+
+  ah = GNUNET_new (struct TALER_EXCHANGE_ManagementAuditorEnableHandle);
+  ah->cb = cb;
+  ah->cb_cls = cb_cls;
+  ah->ctx = ctx;
+  ah->url = TALER_url_join (url,
+                            "management/auditors",
+                            NULL);
+  if (NULL == ah->url)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Could not construct request URL.\n");
+    GNUNET_free (ah);
+    return NULL;
+  }
+  body = json_pack ("{s:s, s:o, s:o, s:o}",
+                    "master_sig",
+                    auditor_url,
+                    "auditor_pub",
+                    GNUNET_JSON_from_data_auto (auditor_pub),
+                    "master_sig",
+                    GNUNET_JSON_from_data_auto (master_sig),
+                    "validity_start",
+                    GNUNET_JSON_from_time_abs (validity_start));
+  if (NULL == body)
+  {
+    GNUNET_break (0);
+    GNUNET_free (ah->url);
+    GNUNET_free (ah);
+    return NULL;
+  }
+  eh = curl_easy_init ();
+  if (GNUNET_OK !=
+      TALER_curl_easy_post (&ah->post_ctx,
+                            eh,
+                            body))
+  {
+    GNUNET_break (0);
+    json_decref (body);
+    GNUNET_free (ah->url);
+    GNUNET_free (eh);
+    return NULL;
+  }
+  json_decref (body);
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Requesting URL '%s'\n",
+              ah->url);
+  GNUNET_assert (CURLE_OK == curl_easy_setopt (eh,
+                                               CURLOPT_URL,
+                                               ah->url));
+  ah->job = GNUNET_CURL_job_add2 (ctx,
+                                  eh,
+                                  ah->post_ctx.headers,
+                                  &handle_auditor_enable_finished,
+                                  ah);
+  if (NULL == ah->job)
+  {
+    TALER_EXCHANGE_management_enable_auditor_cancel (ah);
+    return NULL;
+  }
+  return ah;
+}
 
 
-/**
- * Cancel #TALER_EXCHANGE_management_enable_auditor() operation.
- *
- * @param ah handle of the operation to cancel
- */
 void
 TALER_EXCHANGE_management_enable_auditor_cancel (
   struct TALER_EXCHANGE_ManagementAuditorEnableHandle *ah)
@@ -98,6 +207,7 @@ TALER_EXCHANGE_management_enable_auditor_cancel (
     GNUNET_CURL_job_cancel (ah->job);
     ah->job = NULL;
   }
+  TALER_curl_easy_post_finished (&ah->post_ctx);
   GNUNET_free (ah->url);
   GNUNET_free (ah);
 }

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