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/*
This file is part of GNU Taler
Copyright (C) 2022 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
Taler; see the file COPYING.GPL. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file plugin_kyclogic_oauth2.c
* @brief oauth2.0 based authentication flow logic
* @author Christian Grothoff
*/
#include "platform.h"
#include "taler_kyclogic_plugin.h"
#include <taler/taler_mhd_lib.h>
#include <taler/taler_json_lib.h>
#include <regex.h>
#include "taler_util.h"
/**
* Keeps the plugin-specific state for
* a given configuration section.
*/
struct TALER_KYCLOGIC_ProviderDetails
{
};
/**
* Handle for an initiation operation.
*/
struct TALER_KYCLOGIC_InitiateHandle
{
};
/**
* Handle for an KYC proof operation.
*/
struct TALER_KYCLOGIC_ProofHandle
{
};
/**
* Handle for an KYC Web hook operation.
*/
struct TALER_KYCLOGIC_WebhookHandle
{
};
/**
* Saves the state of a plugin.
*/
struct PluginState
{
/**
* Our global configuration.
*/
const struct GNUNET_CONFIGURATION_Handle *cfg;
};
/**
* Load the configuration of the KYC provider.
*
* @param cls closure
* @param provider_section_name configuration section to parse
* @return NULL if configuration is invalid
*/
static struct TALER_KYCLOGIC_ProviderDetails *
oauth2_load_configuration (void *cls,
const char *provider_section_name)
{
return NULL;
}
/**
* Release configuration resources previously loaded
*
* @param[in] pd configuration to release
*/
static void
oauth2_unload_configuration (struct TALER_KYCLOGIC_ProviderDetails *pd)
{
}
/**
* Initiate KYC check.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param pd provider configuration details
* @param account_id which account to trigger process for
* @param cb function to call with the result
* @param cb_cls closure for @a cb
* @return handle to cancel operation early
*/
static struct TALER_KYCLOGIC_InitiateHandle *
oauth2_initiate (void *cls,
const struct TALER_KYCLOGIC_ProviderDetails *pd,
const struct TALER_PaytoHashP *account_id,
TALER_KYCLOGIC_InitiateCallback cb,
void *cb_cls)
{
return NULL;
}
/**
* Cancel KYC check initiation.
*
* @param[in] ih handle of operation to cancel
*/
static void
oauth2_initiate_cancel (struct TALER_KYCLOGIC_InitiateHandle *ih)
{
}
/**
* Check KYC status and return status to human.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param pd provider configuration details
* @param account_id which account to trigger process for
* @param cb function to call with the result
* @param cb_cls closure for @a cb
* @return handle to cancel operation early
*/
static struct TALER_KYCLOGIC_ProofHandle *
oauth2_proof (void *cls,
const struct TALER_KYCLOGIC_ProviderDetails *pd,
const struct TALER_PaytoHashP *account_id,
const char *provider_user_id,
const char *provider_legitimization_id,
TALER_KYCLOGIC_ProofCallback cb,
void *cb_cls)
{
return NULL;
}
/**
* Cancel KYC proof.
*
* @param[in] ph handle of operation to cancel
*/
static void
oauth2_proof_cancel (struct TALER_KYCLOGIC_ProofHandle *ph)
{
}
/**
* Check KYC status and return result for Webhook.
*
* @param cls the @e cls of this struct with the plugin-specific state
* @param pd provider configuration details
* @param plc callback to lookup accounts with
* @param plc_cls closure for @a plc
* @param http_method HTTP method used for the webhook
* @param url_path rest of the URL after `/kyc-webhook/`
* @param connection MHD connection object (for HTTP headers)
* @param body_size number of bytes in @a body
* @param body HTTP request body
* @param cb function to call with the result
* @param cb_cls closure for @a cb
* @return handle to cancel operation early
*/
static struct TALER_KYCLOGIC_InitiateHandle *
oauth2_webhook (void *cls,
const struct TALER_KYCLOGIC_ProviderDetails *pd,
TALER_KYCLOGIC_ProviderLookupCallback plc,
void *plc_cls,
const char *http_method,
const char *url_path,
struct MHD_Connection *connection,
size_t body_size,
const void *body,
TALER_KYCLOGIC_WebhookCallback cb,
void *cb_cls)
{
GNUNET_break_op (0);
return NULL;
}
/**
* Cancel KYC webhook execution.
*
* @param[in] wh handle of operation to cancel
*/
static void
oauth2_webhook_cancel (struct TALER_KYCLOGIC_WebhookHandle *wh)
{
}
/**
* Initialize OAuth2.0 KYC logic plugin
*
* @param cls a configuration instance
* @return NULL on error, otherwise a `struct TALER_KYCLOGIC_Plugin`
*/
void *
libtaler_plugin_kyclogic_oauth2_init (void *cls)
{
const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
struct TALER_KYCLOGIC_Plugin *plugin;
struct PluginState *ps;
ps = GNUNET_new (struct PluginState);
ps->cfg = cfg;
plugin = GNUNET_new (struct TALER_KYCLOGIC_Plugin);
plugin->cls = ps;
plugin->load_configuration
= &oauth2_load_configuration;
plugin->unload_configuration
= &oauth2_unload_configuration;
plugin->initiate
= &oauth2_initiate;
plugin->initiate_cancel
= &oauth2_initiate_cancel;
plugin->proof
= &oauth2_proof;
plugin->proof_cancel
= &oauth2_proof_cancel;
plugin->webhook
= &oauth2_webhook;
plugin->webhook_cancel
= &oauth2_webhook_cancel;
return plugin;
}
/**
* Unload authorization plugin
*
* @param cls a `struct TALER_KYCLOGIC_Plugin`
* @return NULL (always)
*/
void *
libtaler_plugin_kyclogic_oauth2_done (void *cls)
{
struct TALER_KYCLOGIC_Plugin *plugin = cls;
struct PluginState *ps = plugin->cls;
GNUNET_free (ps);
GNUNET_free (plugin);
return NULL;
}
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