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testing_api_cmd_get_auditor.c (8073B)

---

 /*
   This file is part of TALER
   (C) 2023 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_cmd_get_auditor.c
  * @brief Command to get an auditor handle
  * @author Christian Grothoff
  */
 #include "taler/taler_json_lib.h"
 #include <gnunet/gnunet_curl_lib.h>
 #include "taler/taler_testing_lib.h"
 
 
 /**
  * State for a "get auditor" CMD.
  */
 struct GetAuditorState
 {
 
   /**
    * Private key of the auditor.
    */
   struct TALER_AuditorPrivateKeyP auditor_priv;
 
   /**
    * Public key of the auditor.
    */
   struct TALER_AuditorPublicKeyP auditor_pub;
 
   /**
    * Our interpreter state.
    */
   struct TALER_TESTING_Interpreter *is;
 
   /**
    * Our configuration.
    */
   const struct GNUNET_CONFIGURATION_Handle *cfg;
 
   /**
    * Should we load and check the auditor's private key?
    */
   bool load_auditor_keys;
 
   /**
    * Auditor handle used to get the configuration.
    */
   struct TALER_AUDITOR_GetConfigHandle *auditor;
 
   /**
    * URL of the auditor.
    */
   char *auditor_url;
 
   /**
    * Filename of the master private key of the auditor.
    */
   char *priv_file;
 
 };
 
 
 /**
  * Function called with information about the auditor.
  *
  * @param cls closure
  * @param vr response data
  */
 static void
 version_cb (
   void *cls,
   const struct TALER_AUDITOR_ConfigResponse *vr)
 {
   struct GetAuditorState *gas = cls;
 
   gas->auditor = NULL;
   if (MHD_HTTP_OK != vr->hr.http_status)
   {
     TALER_TESTING_unexpected_status (gas->is,
                                      vr->hr.http_status,
                                      MHD_HTTP_OK);
     return;
   }
   if ( (NULL != gas->priv_file) &&
        (0 != GNUNET_memcmp (&gas->auditor_pub,
                             &vr->details.ok.vi.auditor_pub)) )
   {
     GNUNET_break (0);
     TALER_TESTING_interpreter_fail (gas->is);
     return;
   }
   TALER_TESTING_interpreter_next (gas->is);
 }
 
 
 /**
  * Get the file name of the master private key file of the auditor from @a
  * cfg.
  *
  * @param cfg configuration to evaluate
  * @return base URL of the auditor according to @a cfg
  */
 static char *
 get_auditor_priv_file (
   const struct GNUNET_CONFIGURATION_Handle *cfg)
 {
   char *fn;
   struct GNUNET_CONFIGURATION_Handle *acfg;
   char *dfn;
 
   GNUNET_break (GNUNET_OK ==
                 GNUNET_CONFIGURATION_get_value_filename (cfg,
                                                          "PATHS",
                                                          "DEFAULTCONFIG",
                                                          &dfn));
   acfg = GNUNET_CONFIGURATION_create (TALER_AUDITOR_project_data ());
   GNUNET_break (GNUNET_OK ==
                 GNUNET_CONFIGURATION_load (acfg,
                                            dfn));
   GNUNET_free (dfn);
   if (GNUNET_OK !=
       GNUNET_CONFIGURATION_get_value_filename (acfg,
                                                "auditor",
                                                "AUDITOR_PRIV_FILE",
                                                &fn))
   {
     GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                                "auditor",
                                "AUDITOR_PRIV_FILE");
   }
   GNUNET_CONFIGURATION_destroy (acfg);
   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
               "Loading auditor private key from %s\n",
               fn);
   return fn;
 }
 
 
 /**
  * Run the "get_auditor" command.
  *
  * @param cls closure.
  * @param cmd the command currently being executed.
  * @param is the interpreter state.
  */
 static void
 get_auditor_run (void *cls,
                  const struct TALER_TESTING_Command *cmd,
                  struct TALER_TESTING_Interpreter *is)
 {
   struct GetAuditorState *gas = cls;
 
   (void) cmd;
   if (gas->load_auditor_keys)
     gas->priv_file = get_auditor_priv_file (gas->cfg);
 
   if (NULL == gas->auditor_url)
   {
     GNUNET_break (0);
     TALER_TESTING_interpreter_fail (is);
     return;
   }
   if (NULL != gas->priv_file)
   {
     if (GNUNET_SYSERR ==
         GNUNET_CRYPTO_eddsa_key_from_file (gas->priv_file,
                                            GNUNET_YES,
                                            &gas->auditor_priv.eddsa_priv))
     {
       GNUNET_break (0);
       TALER_TESTING_interpreter_fail (is);
       return;
     }
     GNUNET_CRYPTO_eddsa_key_get_public (&gas->auditor_priv.eddsa_priv,
                                         &gas->auditor_pub.eddsa_pub);
   }
   gas->is = is;
   gas->auditor
     = TALER_AUDITOR_get_config (TALER_TESTING_interpreter_get_context (is),
                                 gas->auditor_url,
                                 &version_cb,
                                 gas);
   if (NULL == gas->auditor)
   {
     GNUNET_break (0);
     TALER_TESTING_interpreter_fail (is);
     return;
   }
 }
 
 
 /**
  * Cleanup the state.
  *
  * @param cls closure.
  * @param cmd the command which is being cleaned up.
  */
 static void
 get_auditor_cleanup (void *cls,
                      const struct TALER_TESTING_Command *cmd)
 {
   struct GetAuditorState *gas = cls;
 
   if (NULL != gas->auditor)
   {
     GNUNET_break (0);
     TALER_AUDITOR_get_config_cancel (gas->auditor);
     gas->auditor = NULL;
   }
   GNUNET_free (gas->priv_file);
   GNUNET_free (gas->auditor_url);
   GNUNET_free (gas);
 }
 
 
 /**
  * Offer internal data to a "get_auditor" CMD state to other commands.
  *
  * @param cls closure
  * @param[out] ret result (could be anything)
  * @param trait name of the trait
  * @param index index number of the object to offer.
  * @return #GNUNET_OK on success
  */
 static enum GNUNET_GenericReturnValue
 get_auditor_traits (void *cls,
                     const void **ret,
                     const char *trait,
                     unsigned int index)
 {
   struct GetAuditorState *gas = cls;
   unsigned int off = (NULL == gas->priv_file) ? 2 : 0;
   struct TALER_TESTING_Trait traits[] = {
     TALER_TESTING_make_trait_auditor_priv (&gas->auditor_priv),
     TALER_TESTING_make_trait_auditor_pub (&gas->auditor_pub),
     TALER_TESTING_make_trait_auditor_url (gas->auditor_url),
     TALER_TESTING_trait_end ()
   };
 
   return TALER_TESTING_get_trait (&traits[off],
                                   ret,
                                   trait,
                                   index);
 }
 
 
 /**
  * Get the base URL of the auditor from @a cfg.
  *
  * @param cfg configuration to evaluate
  * @return base URL of the auditor according to @a cfg
  */
 static char *
 get_auditor_base_url (
   const struct GNUNET_CONFIGURATION_Handle *cfg)
 {
   char *auditor_url;
 
   if (GNUNET_OK !=
       GNUNET_CONFIGURATION_get_value_string (cfg,
                                              "auditor",
                                              "BASE_URL",
                                              &auditor_url))
   {
     GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
                                "auditor",
                                "BASE_URL");
     return NULL;
   }
   return auditor_url;
 }
 
 
 struct TALER_TESTING_Command
 TALER_TESTING_cmd_get_auditor (
   const char *label,
   const struct GNUNET_CONFIGURATION_Handle *cfg,
   bool load_auditor_keys)
 {
   struct GetAuditorState *gas;
 
   gas = GNUNET_new (struct GetAuditorState);
   gas->auditor_url = get_auditor_base_url (cfg);
   gas->load_auditor_keys = load_auditor_keys;
   gas->cfg = cfg;
   {
     struct TALER_TESTING_Command cmd = {
       .cls = gas,
       .label = label,
       .run = &get_auditor_run,
       .cleanup = &get_auditor_cleanup,
       .traits = &get_auditor_traits,
       .name = "auditor"
     };
 
     return cmd;
   }
 }