[taler-exchange] branch master updated: add ability to change Authorization header in via interpreter command (#6778)

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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 0453ef45 add ability to change Authorization header in via interpreter 
command (#6778)
0453ef45 is described below

commit 0453ef45df3970247975f7adef957a8c787a0fc9
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Sat Apr 17 20:06:34 2021 +0200

    add ability to change Authorization header in via interpreter command 
(#6778)
---
 src/include/taler_testing_lib.h           |  16 ++++
 src/testing/Makefile.am                   |   1 +
 src/testing/testing_api_cmd_change_auth.c | 154 ++++++++++++++++++++++++++++++
 3 files changed, 171 insertions(+)

diff --git a/src/include/taler_testing_lib.h b/src/include/taler_testing_lib.h
index 49767534..c0a76c44 100644
--- a/src/include/taler_testing_lib.h
+++ b/src/include/taler_testing_lib.h
@@ -575,6 +575,7 @@ TALER_TESTING_interpreter_lookup_command (struct 
TALER_TESTING_Interpreter *is,
 struct GNUNET_CURL_Context *
 TALER_TESTING_interpreter_get_context (struct TALER_TESTING_Interpreter *is);
 
+
 /**
  * Obtain label of the command being now run.
  *
@@ -931,6 +932,21 @@ TALER_TESTING_has_in_name (const char *prog,
 /* ************** Specific interpreter commands ************ */
 
 
+/**
+ * Command to modify authorization header used in the CURL context.
+ * This will destroy the existing CURL context and create a fresh
+ * one. The command will fail (badly) if the existing CURL context
+ * still has active HTTP requests associated with it.
+ *
+ * @param label command label.
+ * @param auth_token auth token to use henceforth, can be NULL
+ * @return the command.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_set_authorization (const char *label,
+                                     const char *auth_token);
+
+
 /**
  * Make a credit "history" CMD.
  *
diff --git a/src/testing/Makefile.am b/src/testing/Makefile.am
index d7d6a7ff..7042f243 100644
--- a/src/testing/Makefile.am
+++ b/src/testing/Makefile.am
@@ -52,6 +52,7 @@ libtalertesting_la_SOURCES = \
   testing_api_cmd_bank_history_debit.c \
   testing_api_cmd_bank_transfer.c \
   testing_api_cmd_batch.c \
+  testing_api_cmd_change_auth.c \
   testing_api_cmd_check_keys.c \
   testing_api_cmd_deposit.c \
   testing_api_cmd_deposits_get.c \
diff --git a/src/testing/testing_api_cmd_change_auth.c 
b/src/testing/testing_api_cmd_change_auth.c
new file mode 100644
index 00000000..f79170f8
--- /dev/null
+++ b/src/testing/testing_api_cmd_change_auth.c
@@ -0,0 +1,154 @@
+/*
+  This file is part of TALER
+  (C) 2018 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 testing/testing_api_change_auth.c
+ * @brief command(s) to change CURL context authorization header
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_testing_lib.h"
+
+
+/**
+ * State for a "authchange" CMD.
+ */
+struct AuthchangeState
+{
+
+  /**
+   * What is the new authorization token to send?
+   */
+  const char *auth_token;
+};
+
+
+/**
+ * No traits to offer, just provide a stub to be called when
+ * some CMDs iterates through the list of all the commands.
+ *
+ * @param cls closure.
+ * @param[out] ret result.
+ * @param trait name of the trait.
+ * @param index index number of the trait to return.
+ * @return #GNUNET_OK on success.
+ */
+static int
+authchange_traits (void *cls,
+                   const void **ret,
+                   const char *trait,
+                   unsigned int index)
+{
+  (void) cls;
+  (void) ret;
+  (void) trait;
+  (void) index;
+  return GNUNET_NO;
+}
+
+
+/**
+ * Run the command.
+ *
+ * @param cls closure.
+ * @param cmd the command to execute.
+ * @param is the interpreter state.
+ */
+static void
+authchange_run (void *cls,
+                const struct TALER_TESTING_Command *cmd,
+                struct TALER_TESTING_Interpreter *is)
+{
+  struct AuthchangeState *ss = cls;
+
+  if (NULL != is->ctx)
+  {
+    GNUNET_CURL_fini (is->ctx);
+    is->ctx = NULL;
+  }
+  if (NULL != is->rc)
+  {
+    GNUNET_CURL_gnunet_rc_destroy (is->rc);
+    is->rc = NULL;
+  }
+  is->ctx = GNUNET_CURL_init (&GNUNET_CURL_gnunet_scheduler_reschedule,
+                              &is->rc);
+  GNUNET_CURL_enable_async_scope_header (is->ctx,
+                                         "Taler-Correlation-Id");
+  GNUNET_assert (NULL != is->ctx);
+  is->rc = GNUNET_CURL_gnunet_rc_create (is->ctx);
+  if (NULL != ss->auth_token)
+  {
+    char *authorization;
+
+    GNUNET_asprintf (&authorization,
+                     "%s: %s",
+                     MHD_HTTP_HEADER_AUTHORIZATION,
+                     ss->auth_token);
+    GNUNET_assert (GNUNET_OK ==
+                   GNUNET_CURL_append_header (is->ctx,
+                                              authorization));
+    GNUNET_free (authorization);
+  }
+  TALER_TESTING_interpreter_next (is);
+}
+
+
+/**
+ * Cleanup the state from a "authchange" CMD.
+ *
+ * @param cls closure.
+ * @param cmd the command which is being cleaned up.
+ */
+static void
+authchange_cleanup (void *cls,
+                    const struct TALER_TESTING_Command *cmd)
+{
+  struct AuthchangeState *ss = cls;
+
+  (void) cmd;
+  GNUNET_free (ss);
+}
+
+
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_set_authorization (const char *label,
+                                     const char *auth_token)
+{
+  struct AuthchangeState *ss;
+
+  ss = GNUNET_new (struct AuthchangeState);
+  ss->auth_token = auth_token;
+
+  {
+    struct TALER_TESTING_Command cmd = {
+      .cls = ss,
+      .label = label,
+      .run = &authchange_run,
+      .cleanup = &authchange_cleanup,
+      .traits = &authchange_traits
+    };
+
+    return cmd;
+  }
+}
+
+
+/* end of testing_api_cmd_change_auth.c  */

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